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Operating lease right-of-use assets(a)

14,666

14,393

14,128

13,860

13,653

13,410

13,195

13,028

^[1]

6,133

6,112

6,053

5,969

Site rental contracts and tenant relationships, net

10,078

10,074

10,075

10,021

4,764

5,209

Other intangible assets, net

^[1]

4,968

5,074

5,178

307

5,620

5,729

5,854

Long-term prepaid rent and other assets, net

^[1]

116

104

920

911

885

892

Total assets

38,457

38,321

38,124

37,755

32,762

32,621

32,351

32,227

Accounts payable

334

368

337

311

313

302

272

248

Accrued interest

169

110

166

107

148

101

154

104

Other accrued liabilities

657

638

607

598

587

568

554

539

^[1]

361

335

305

262

351

306

272

240

Current maturities of debt and other obligations

100

107

111

112

130

Current portion of operating lease liabilities(a)

^[1]

299

296

289

287

Total current liabilities

1,920

1,847

1,802

1,661

1,506

1,388

1,364

1,261

Debt and other long-term obligations

18,021

17,750

17,471

17,120

16,575

16,313

15,844

15,616

Operating lease liabilities(a)

^[1]

5,511

5,480

5,427

5,338

^[1]

2,516

2,458

2,411

2,369

3,110

3,074

3,014

2,946

Total liabilities

27,968

27,535

27,111

26,488

21,191

20,775

20,222

19,823

Common stock, $0.01 par value; 600 shares authorized; shares issued and outstanding: December 31, 2019—416 and December 31, 2018—415

6.875% Mandatory Convertible Preferred Stock, Series A, $0.01 par value; 20 shares authorized; shares issued and outstanding: December 31, 2019—2 and December 31, 2018—2; aggregate liquidation value: December 31, 2019—$1,650 and December 31, 2018—$1,650

Additional paid-in capital

17,855

17,829

17,801

17,769

17,767

17,743

17,711

17,690

Accumulated other comprehensive income (loss)

(5)

(4)

(7,365)

(7,042)

(6,787)

(6,501)

(6,195)

(5,896)

(5,581)

(5,286)

(4,919)

$ (3,714)

Total liabilities and equity

10,489

10,786

11,013

11,267

11,571

11,846

12,129

12,404

$ 11,925

$ 7,222

$ 38,457

$ 38,321

$ 38,124

$ 37,755

$ 32,762

$ 32,621

$ 32,351

$ 32,227

[1]	See "Recently Adopted Accounting Pronouncements" in note 3 to the consolidated financial statements for a discussion of the recently adopted new lease standard.

Consolidated Balance Sheet (Parenthetical) - USD ($) shares in Millions, $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Allowance for doubtful accounts receivable, current	$ 18	$ 14
6.875% Mandatory Convertible Preferred Stock, Par or Stated Value Per Share (dollars per share)	$ 0.01	$ 0.01
6.875% Mandatory Convertible Preferred Stock, Shares Authorized	20	20
6.875% Mandatory Convertible Preferred Stock, shares issued	2	2
Convertible Preferred Stock, shares outstanding	2	2
Mandatory redemption and aggregate liquidation value, 6.875% Mandatory Convertible Preferred Stock	$ 1,650	$ 1,650
Common stock, par value (dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	600	600
Common stock, shares issued	416	415
Common stock, shares outstanding	416	415

Consolidated Statement of Operations and Comprehensive Income (Loss) - USD ($)
shares in Millions, $ in Millions

3 Months Ended

6 Months Ended

9 Months Ended

12 Months Ended

Dec. 31, 2019

^[1]

Sep. 30, 2019

Jun. 30, 2019

Mar. 31, 2019

Dec. 31, 2018

Sep. 30, 2018

Jun. 30, 2018

Mar. 31, 2018

Jun. 30, 2019

Jun. 30, 2018

Sep. 30, 2019

Sep. 30, 2018

Dec. 31, 2019

Dec. 31, 2018

Dec. 31, 2017

Net revenues:

$ 1,287

$ 1,263

$ 1,242

$ 1,231

$ 1,205

$ 1,188

$ 1,171

$ 2,505

$ 2,360

$ 3,793

$ 3,565

$ 5,093

$ 4,796

$ 3,734

195

184

166

175

156

131

113

350

244

544

399

670

574

521

$ 1,426

1,482

^[1]

1,447

^[1]

1,408

^[1]

1,406

^[1]

1,361

^[1]

1,319

^[1]

1,284

^[1]

2,855

2,604

4,337

3,964

5,763

5,370

4,255

Site rental

^[2]

369

365

361

353

355

347

726

702

1,095

1,057

1,462

1,410

1,144

146

137

124

135

^[2]

118

^[2]

261

183

^[2]

407

301

^[2]

524

^[2]

434

^[2]

399

^[2]

150

155

152

145

138

134

307

273

457

418

614

563

426

Acquisition and integration costs

388

393

394

389

385

379

374

787

753

1,175

1,138

1,572

1,527

1,241

Total operating expenses

1,059

1,058

1,041

1,039

1,015

984

949

2,099

1,934

3,157

2,950

4,204

3,987

3,288

Interest expense and amortization of deferred financing costs

379

423

^[1]

389

^[1]

367

^[1]

367

^[1]

346

^[1]

335

^[1]

335

^[1]

756

670

1,180

1,014

1,559

1,383

967

(173)

(169)

(168)

(164)

(160)

(158)

(160)

(337)

(318)

(510)

(478)

683

642

591

Gains (losses) on retirement of long-term obligations

^[1]

(1)

^[1]

(1)

^[1]

(32)

^[1]

(3)

^[1]

(71)

^[1]

(2)

(74)

(2)

(106)

(2)

^[3]

(106)

^[3]

(4)

^[4]

Interest income

Other income (expense)

(5)

(1)

(6)

247

220

199

206

156

175

104

419

279

667

434

881

641

392

$ (6)

(5)

(4)

^[1]

(6)

^[1]

(5)

^[1]

(5)

^[1]

(5)

^[1]

(4)

^[1]

(10)

(9)

(15)

(13)

(21)

(19)

(26)

242

^[1]

216

^[1]

193

^[1]

201

^[1]

151

^[1]

170

^[1]

100

^[1]

409

270

652

421

860

622

366

Net income (loss) attributable to CCIC common stockholders

(28)

(57)

(85)

(113)

(58)

214

188

165

173

123

142

352

213

567

336

747

509

308

242

^[1]

216

^[1]

193

^[1]

201

^[1]

151

^[1]

170

^[1]

100

^[1]

409

270

652

421

860

622

366

Other comprehensive income (loss):

Total other comprehensive income (loss)

(1)

(1)

^[5]

Comprehensive income (loss) attributable to CCIC stockholders

$ 242

$ 216

$ 193

$ 201

$ 151

$ 169

$ 100

$ 409

$ 269

$ 652

$ 420

$ 860

$ 621

$ 368

Net income (loss) attributable to CCIC common stockholders, per common share:

$ 0.43

$ 0.51

^[1]

$ 0.45

^[1]

$ 0.40

^[1]

$ 0.42

^[1]

$ 0.30

^[1]

$ 0.34

^[1]

$ 0.18

^[1]

$ 0.85

$ 0.52

$ 1.36

$ 0.81

$ 1.80

$ 1.23

$ 0.80

Weighted-average common shares outstanding:

$ 0.43

$ 0.51

^[1]

$ 0.45

^[1]

$ 0.40

^[1]

$ 0.42

^[1]

$ 0.30

^[1]

$ 0.34

^[1]

$ 0.18

^[1]

$ 0.84

$ 0.52

$ 1.36

$ 0.81

$ 1.79

$ 1.23

$ 0.80

Basic (in shares)

416

415

409

415

412

416

413

416

413

382

Diluted (in shares)

418

417

416

410

417

413

418

414

418

415

383

[1]	The sum of quarterly information may not agree to year-to-date information due to rounding.
[2]	Exclusive of depreciation, amortization and accretion shown separately.
[3]	Inclusive of the write-off of the respective deferred financing costs.
[4]	The losses represent write-off of deferred financing costs.
[5]	See the consolidated statement of operations and comprehensive income (loss) for the components of "total other comprehensive income (loss)."

Consolidated Statement of Cash Flows - USD ($)
$ in Millions

3 Months Ended

6 Months Ended

9 Months Ended

12 Months Ended

Mar. 31, 2019

Mar. 31, 2018

Jun. 30, 2019

Jun. 30, 2018

Sep. 30, 2019

Sep. 30, 2018

Dec. 31, 2019

Dec. 31, 2018

Dec. 31, 2017

Cash flows from operating activities:

Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:

$ 193

$ 100

$ 409

$ 270

$ 652

$ 421

$ 860

$ 622

$ 366

(Gains) losses on retirement of long-term obligations

394

374

787

753

1,175

1,138

1,572

1,527

1,241

^[1]

106

^[2]

106

^[2]

^[3]

Amortization of deferred financing costs and other non-cash interest

117

103

Deferred income tax (benefit) provision

Other non-cash adjustments, net

(2)

Changes in assets and liabilities, excluding the effects of acquisitions:

Increase (decrease) in accrued interest

(41)

(28)

(38)

(31)

Increase (decrease) in accounts payable

(5)

(34)

(7)

(43)

179

254

271

234

Decrease (increase) in other assets

(43)

(5)

(89)

(59)

(166)

(74)

(96)

(105)

(19)

(43)

(62)

(91)

(62)

(103)

(71)

(114)

(16)

Net cash provided by (used for) operating activities

512

452

1,227

1,110

1,890

1,773

2,698

2,500

2,032

Payments for acquisitions, net of cash acquired

(480)

(370)

(998)

(762)

(1,537)

(1,239)

(2,057)

(1,739)

(1,217)

(10)

(14)

(13)

(18)

(15)

(26)

(17)

(42)

(9,260)

Other investing activities, net

(14)

(7)

(12)

(5)

Net cash provided by (used for) investing activities

(489)

(384)

(1,010)

(777)

(1,549)

(1,279)

(2,081)

(1,793)

(10,482)

Proceeds from issuance of long-term debt

996

1,743

995

1,743

1,895

2,743

1,894

2,742

3,093

Principal payments on debt and other long-term obligations

(25)

(32)

(36)

(47)

(59)

(76)

(86)

(105)

(119)

Purchases and redemptions of long-term debt

(12)

(1,318)

(12)

(1,318)

(12)

(2,346)

(12)

(2,346)

Borrowings under revolving credit facility

710

170

1,195

485

1,585

1,290

2,110

1,820

2,820

Payments under revolving credit facility

(1,140)

(1,050)

(1,785)

(1,150)

(2,270)

(1,465)

(2,660)

(1,725)

(1,840)

Proceeds from Issuance of Commercial Paper

500

155

Payments for financing costs

(10)

(15)

(14)

(20)

(24)

(33)

(24)

(31)

(29)

Net proceeds from issuance of common stock

843

841

4,221

Net proceeds from issuance of preferred stock

1,608

Purchases of common stock

(42)

(33)

(43)

(34)

(44)

(34)

(44)

(34)

(23)

Dividends/distributions paid on common stock

(477)

(443)

(944)

(879)

(1,415)

(1,315)

(1,912)

(1,782)

(1,509)

Dividends paid on preferred stock

(28)

(57)

(85)

(113)

(30)

Net cash provided by (used for) financing activities

(28)

(163)

(201)

(436)

(429)

(480)

(692)

(733)

8,192

Net increase (decrease) in cash, cash equivalents, and restricted cash from continuing operations

(5)

(95)

(103)

(88)

(75)

(26)

(258)

Effect of exchange rate changes on cash

(1)

Cash, Cash Equivalents and Restricted Cash - Beginning of Period

413

440

413

440

413

440

413

440

697

Cash, Cash Equivalents and Restricted Cash - End of Period

$ 408

$ 345

$ 429

$ 336

$ 325

$ 453

$ 338

$ 413

$ 440

[1]	The sum of quarterly information may not agree to year-to-date information due to rounding.
[2]	Inclusive of the write-off of the respective deferred financing costs.
[3]	The losses represent write-off of deferred financing costs.

Consolidated Statement of Convertible Preferred Stock and Equity - USD ($)
shares in Millions, $ in Millions

Total

Preferred Stock [Member]

Common Stock [Member]

Additional Paid-in Capital

Foreign Currency Translation Adjustments

Dividends/Distributions in Excess of Earnings

Common Class A [Member]

Common Stock [Member]

Common Class A [Member]

Additional Paid-in Capital

6.875% Mandatory Convertible Preferred Stock [Member]

Preferred Stock [Member]

6.875% Mandatory Convertible Preferred Stock [Member]

Additional Paid-in Capital

Increase (Decrease) in Stockholders' Equity [Roll Forward]

Accumulated other Comprehensive Income (Loss), Net of Tax

$ (6)

Balance, value at Dec. 31, 2016

$ 7,222

$ 0

$ 4

$ 10,938

$ (3,714)

Balance, (in shares) at Dec. 31, 2016

361

Increase (Decrease) in Stockholders' Equity [Roll Forward]

Stock-based compensation related activity, net of forfeitures, value

100

Stock-based compensation related activity, net of forfeitures, shares

Purchases and retirement of capital stock, value

(23)

Stock Issued During Period, Shares, New Issues

Stock Issued During Period, Value, New Issues

$ 4,221

$ 1,608

^[1]

(1,513)

(58)

366

11,925

$ 0

$ 4

16,844

(4,919)

Increase (Decrease) in Stockholders' Equity [Roll Forward]

406

Accumulated other Comprehensive Income (Loss), Net of Tax

(4)

Balance, value at Mar. 31, 2018

^[2]

100

12,404

11,925

$ 0

$ 4

16,844

(4,919)

Increase (Decrease) in Stockholders' Equity [Roll Forward]

406

(1)

(1)

Balance, value at Jun. 30, 2018

270

12,129

11,925

$ 4

16,844

(4,919)

Increase (Decrease) in Stockholders' Equity [Roll Forward]

406

(1)

(1)

Balance, value at Sep. 30, 2018

421

11,846

11,925

$ 4

16,844

(4,919)

Increase (Decrease) in Stockholders' Equity [Roll Forward]

406

Stock-based compensation related activity, net of forfeitures, value

116

Stock-based compensation related activity, net of forfeitures, shares

Purchases and retirement of capital stock, value

(34)

Stock Issued During Period, Shares, New Issues

Stock Issued During Period, Value, New Issues

841

(1)

^[1]

(1)

(1,785)

(113)

622

$ 11,571

$ 4

17,767

(6,195)

Increase (Decrease) in Stockholders' Equity [Roll Forward]

415

Accumulated other Comprehensive Income (Loss), Net of Tax

$ (4)

Balance, value at Mar. 31, 2018

12,404

Increase (Decrease) in Stockholders' Equity [Roll Forward]

(1)

(1)

Balance, value at Jun. 30, 2018

^[2]

170

12,129

Increase (Decrease) in Stockholders' Equity [Roll Forward]

Accumulated other Comprehensive Income (Loss), Net of Tax

(5)

Balance, value at Sep. 30, 2018

^[2]

151

11,846

Increase (Decrease) in Stockholders' Equity [Roll Forward]

Accumulated other Comprehensive Income (Loss), Net of Tax

(5)

^[2]

201

$ 11,571

$ 0

$ 4

17,767

(6,195)

Increase (Decrease) in Stockholders' Equity [Roll Forward]

415

Accumulated other Comprehensive Income (Loss), Net of Tax

$ (5)

(5)

^[3]

471

Balance, value at Mar. 31, 2019

^[2]

193

11,267

$ 11,571

$ 0

$ 4

17,767

(6,195)

Increase (Decrease) in Stockholders' Equity [Roll Forward]

415

$ 0

Balance, value at Jun. 30, 2019

409

11,013

$ 11,571

$ 4

17,767

(6,195)

Increase (Decrease) in Stockholders' Equity [Roll Forward]

415

$ 0

Balance, value at Sep. 30, 2019

652

10,786

$ 11,571

$ 4

17,767

(6,195)

Increase (Decrease) in Stockholders' Equity [Roll Forward]

415

Stock-based compensation related activity, net of forfeitures, value

$ 132

132

Stock-based compensation related activity, net of forfeitures, shares

Purchases and retirement of capital stock, value

(44)

(1,917)

(113)

Balance, value at Dec. 31, 2019

860

$ 10,489

$ 4

17,855

(7,365)

Balance, (in shares) at Dec. 31, 2019

416

Increase (Decrease) in Stockholders' Equity [Roll Forward]

Accumulated other Comprehensive Income (Loss), Net of Tax

$ (5)

Balance, value at Mar. 31, 2019

11,267

Increase (Decrease) in Stockholders' Equity [Roll Forward]

^[3]

471

Balance, value at Jun. 30, 2019

^[2]

216

11,013

Increase (Decrease) in Stockholders' Equity [Roll Forward]

Accumulated other Comprehensive Income (Loss), Net of Tax

(5)

^[3]

472

Balance, value at Sep. 30, 2019

^[2]

242

10,786

Increase (Decrease) in Stockholders' Equity [Roll Forward]

Accumulated other Comprehensive Income (Loss), Net of Tax

(5)

^[3]

502

Balance, value at Dec. 31, 2019

$ 10,489

$ 0

$ 4

$ 17,855

$ (7,365)

Balance, (in shares) at Dec. 31, 2019

416

Increase (Decrease) in Stockholders' Equity [Roll Forward]

Accumulated other Comprehensive Income (Loss), Net of Tax

$ (5)

[1]	See the consolidated statement of operations and comprehensive income (loss) for the components of "total other comprehensive income (loss)."
[2]	The sum of quarterly information may not agree to year-to-date information due to rounding.
[3]	Inclusive of dividends accrued for holders of unvested RSUs, which will be paid when and if the RSUs vest

Basis of Presentation

12 Months Ended

Dec. 31, 2019

Basis of Presentation [Abstract]

Basis of Presentation

The consolidated financial statements include the accounts of Crown Castle International Corp. and its predecessor, as applicable (together, "CCIC"), and their subsidiaries, collectively referred to herein as the "Company." All significant intercompany balances and transactions have been eliminated in consolidation. As used herein, the term "including," and any variation thereof, means "including without limitation." The use of the word "or" herein is not exclusive. Unless the context suggests otherwise, references to "U.S." are to the United States of America and Puerto Rico, collectively.

The Company owns, operates and leases shared communications infrastructure that is geographically dispersed throughout the U.S., including (1) towers and other structures, such as rooftops (collectively, "towers"), and (2) fiber primarily supporting small cell networks ("small cells") and fiber solutions. The Company's towers, fiber and small cells assets are collectively referred to herein as "communications infrastructure," and the Company's customers on its communications infrastructure are referred to herein as "tenants."

The Company's core business is providing access, including space or capacity, to its shared communications infrastructure via long-term contracts in various forms, including lease, license, sublease and service agreements (collectively, "tenant contracts").

The Company's operating segments consist of (1) Towers and (2) Fiber. See note 16.

Approximately 53% of the Company's towers are leased or subleased or operated and managed under master leases, subleases, and other agreements with AT&T, Sprint and T-Mobile. The Company has the option to purchase these towers at the end of their respective lease terms. The Company has no obligation to exercise such purchase options. Additional information concerning these towers is as follows:

◦

22% of the Company's towers are leased or subleased or operated and managed under a master prepaid lease or other related agreements with AT&T for a weighted-average initial term of approximately 28 years, weighted on Towers site rental gross margin. The Company has the option to purchase the leased and subleased towers from AT&T at the end of the respective lease or sublease terms for aggregate option payments of approximately $4.2 billion, which payments, if such option is exercised, would be due between 2032 and 2048.


◦	16% of the Company's towers are leased or subleased or operated and managed for an initial period of 32 years (through May 2037) under master leases, subleases, or other agreements with Sprint. The Company has the option to purchase in 2037 all (but not less than all) of the leased and subleased Sprint towers from Sprint for approximately $2.3 billion.

◦

15% of the Company's towers are leased or subleased or operated and managed under a master prepaid lease or other related agreements with T-Mobile for a weighted-average initial term of approximately 28 years, weighted on Towers site rental gross margin. The Company has the option to purchase the leased and subleased towers from T-Mobile at the end of the respective lease or sublease terms for aggregate option payments of approximately $2.0 billion, which payments, if such option is exercised, would be due between 2035 and 2049. In addition, through the acquisition of the rights to approximately 7,100 towers ("T-Mobile Acquisition"), there are another 1% of the Company's towers subject to a lease and sublease or other related arrangements with AT&T. The Company has the option to purchase these towers that it does not otherwise already own at the end of their respective lease terms for aggregate option payments of up to approximately $405 million, which payments, if such option is exercised, would be due prior to 2032 (less than $10 million would be due before 2025).

As part of the Company's effort to provide comprehensive communications infrastructure solutions, as an ancillary business, the Company also offers certain services primarily relating to its Towers segment, predominately consisting of (1) site development services primarily relating to existing or new tenant equipment installations, including: site acquisition, architectural and engineering, or zoning and permitting (collectively, "site development services") and (2) tenant equipment installation or subsequent augmentations (collectively, "installation services").

The Company operates as a REIT for U.S. federal income tax purposes. In addition, the Company has certain taxable REIT subsidiaries ("TRSs"). See note 11.

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities as of the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Restatement of Previously Issued Consolidated Financial Statements (Notes)

12 Months Ended

Dec. 31, 2019

Restatement of Financials [Text Block]

Restatement of Previously Issued Consolidated Financial Statements

Prior to the filing of this Form 10-K, the Company identified historical errors related to the timing of revenue recognition on its tower installation services. Specifically, the Company determined that its historical practice of recognizing the full transaction price as service revenues upon completion of an installation was not acceptable under GAAP. Instead, a portion of the transaction price for the Company's tower installation services, specifically the amounts associated with permanent improvements recorded as fixed assets, represent a lease component and should be recognized as site rental revenues on a ratable basis over the associated estimated lease term.

As a result of the identified historical errors, the Company has restated its financial statements for the years ended December 31, 2018 and 2017, including each of the unaudited condensed consolidated financial statements for the quarterly and year-to-date periods in the year ended December 31, 2018 and first three quarters for the year ended December 31, 2019. The restatement also affects periods prior to 2017, the cumulative effect of which is reflected as an adjustment to opening "Dividends/distributions in excess of earnings" as of January 1, 2017. The adjustments to correct the historical errors described above are referred to herein as the "Restatement Adjustments." In addition to the Restatement Adjustments, the Company has also made other adjustments to the financial statements referenced above to correct errors that were not material to its consolidated financial statements. Such immaterial adjustments are related to (1) an out-of-period adjustment to reduce 2017 site development service revenues which are now recorded in 2016; and (2) a revision in the presentation of certain tower installation activities from a gross basis to a net basis, including the associated removal of certain amounts historically categorized as capital expenditures. These immaterial adjustments relate exclusively to the Company's Towers segment. Collectively, the Restatement Adjustments and other immaterial adjustments are referred to herein as "Historical Adjustments."

The following tables summarize the effects of the Historical Adjustments on the Company’s restated consolidated balance sheet as of December 31, 2018 and its restated consolidated statement of operations and comprehensive income (loss), restated consolidated statement of cash flows and restated consolidated statement of equity for the years ended December 31, 2018 and 2017. In addition to the restatement of the financial statements, certain historical information within the notes to the consolidated financial statements have been restated to reflect the corrections of the Historical Adjustments.

The Restatement Adjustments in the tables below reflect the impact of deferring a portion of the transaction price for the Company's tower installation services, specifically the amounts associated with permanent improvements recorded as fixed assets, which have been deemed to represent a lease component. Such amounts were previously recognized as services and other revenues upon satisfaction of the related performance obligation, and are now recognized as site rental revenues on a ratable basis over the associated estimated lease term.

Consolidated Balance Sheet



	December 31, 2018
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
ASSETS
Property and equipment, net	$	13,676		$	—		$	(23	)	$	13,653
Total assets	32,785			—			(23		)	32,762
LIABILITIES AND EQUITY
Current liabilities:
Deferred revenues	498			89			—			587
Total current liabilities	1,417			89			—			1,506
Other long-term liabilities^(a)	2,759			351			—			3,110
Total liabilities	20,751			440			—			21,191
CCIC stockholders' equity:
Dividends/distributions in excess of earnings	(5,732		)	(440		)	(23		)	(6,195		)
Total equity	12,034			(440		)	(23		)	11,571
Total liabilities and equity	$	32,785		$	—		$	(23	)	$	32,762


(a)	See "Recently Adopted Accounting Pronouncements" in note 3 for a discussion of the recently adopted new lease standard.

Consolidated Statement of Operations and Comprehensive Income (Loss)



	Year Ended December 31, 2018
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	4,716	$	80		$	—		$	4,796
Services and other	707		(128		)	(5		)	574
Net revenues	5,423		(48		)	(5		)	5,370
Operating expenses:
Costs of operations^(a):
Services and other	437		—			(3		)	434
Depreciation, amortization and accretion	1,528		—			(1		)	1,527
Total operating expenses	3,991		—			(4		)	3,987
Operating income (loss)	1,432		(48		)	(1		)	1,383
Income (loss) before income taxes	690		(48		)	(1		)	641
Net income (loss) attributable to CCIC stockholders	671		(48		)	(1		)	622
Net income (loss) attributable to CCIC common stockholders	$	558	$	(48	)	$	(1	)	$	509
Net income (loss)	$	671	$	(48	)	$	(1	)	$	622
Comprehensive income (loss) attributable to CCIC stockholders	$	670	$	(48	)	$	(1	)	$	621
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	1.35	$	(0.12	)	$	—		$	1.23
Net income (loss) attributable to CCIC common stockholders - diluted	$	1.34	$	(0.11	)	$	—		$	1.23



	Year Ended December 31, 2017
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	3,669	$	65		$	—		$	3,734
Services and other	687		(124		)	(42		)	521
Net revenues	4,356		(59		)	(42		)	4,255
Operating expenses:
Costs of operations^(a):
Services and other	420		—			(21		)	399
Depreciation, amortization and accretion	1,242		—			(1		)	1,241
Total operating expenses	3,310		—			(22		)	3,288
Operating income (loss)	1,046		(59		)	(20		)	967
Income (loss) before income taxes	471		(59		)	(20		)	392
Net income (loss) attributable to CCIC stockholders	445		(59		)	(20		)	366
Net income (loss) attributable to CCIC common stockholders	$	387	$	(59	)	$	(20	)	$	308
Net income (loss)	$	445	$	(59	)	$	(20	)	$	366
Comprehensive income (loss) attributable to CCIC stockholders	$	447	$	(59	)	$	(20	)	$	368
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	1.01	$	(0.16	)	$	(0.05	)	$	0.80
Net income (loss) attributable to CCIC common stockholders - diluted	$	1.01	$	(0.16	)	$	(0.05	)	$	0.80


(a)	Exclusive of depreciation, amortization and accretion shown separately.

Consolidated Statement of Cash Flows



	Year Ended December 31, 2018
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
Cash flows from operating activities:
Net income (loss)	$	671		$	(48	)	$	(1	)	$	622
Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:
Depreciation, amortization and accretion	1,528			—			(1		)	1,527
Increase (decrease) in other liabilities	223			48			—			271
Net cash provided by (used for) operating activities	2,502			—			(2		)	2,500
Cash flows from investing activities:
Capital expenditures	(1,741		)	—			2			(1,739		)
Net cash provided by (used for) investing activities	(1,795		)	—			2			(1,793		)
Net increase (decrease) in cash, cash equivalents, and restricted cash	(26		)	—			—			(26		)
Cash, cash equivalents, and restricted cash at beginning of period	440			—			—			440
Cash, cash equivalents, and restricted cash at end of period	$	413		$	—		$	—		$	413



	Year Ended December 31, 2017
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
Cash flows from operating activities:
Net income (loss)	$	445		$	(59	)	$	(20	)	$	366
Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:
Depreciation, amortization and accretion	1,242			—			(1		)	1,241
Increase (decrease) in other liabilities	175			59			—			234
Decrease (increase) in receivables	61			—			10			71
Net cash provided by (used for) operating activities	2,043			—			(11		)	2,032
Cash flows from investing activities:
Capital expenditures	(1,228		)	—			11			(1,217		)
Net cash provided by (used for) investing activities	(10,493		)	—			11			(10,482		)
Net increase (decrease) in cash, cash equivalents, and restricted cash	(258		)	—			—			(258		)
Cash, cash equivalents, and restricted cash at beginning of period	697			—			—			697
Cash, cash equivalents, and restricted cash at end of period	$	440		$	—		$	—		$	440

Consolidated Statement of Equity



	December 31, 2016
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
Dividends/distributions in excess of earnings	$	(3,379	)	$	(332	)	$	(3	)	$	(3,714	)
Total stockholders' equity	$	7,557		$	(332	)	$	(3	)	$	7,222

	December 31, 2017
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
Dividends/distributions in excess of earnings	$	(4,505	)	$	(391	)	$	(23	)	$	(4,919	)
Total stockholders' equity	$	12,339		$	(391	)	$	(23	)	$	11,925

	December 31, 2018
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
Dividends/distributions in excess of earnings	$	(5,732	)	$	(440	)	$	(23	)	$	(6,195	)
Total stockholders' equity	$	12,034		$	(440	)	$	(23	)	$	11,571

Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2019

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

The following is a discussion of the Company's significant accounting policies in effect for the year ended December 31, 2019.

Restricted Cash

Restricted cash represents (1) the cash held in reserve by the indenture trustees pursuant to the indenture governing certain of the Company's debt instruments, (2) cash securing performance obligations such as letters of credit, as well as (3) any other cash whose use is limited by contractual provisions. The restriction of rental cash receipts is a critical feature of certain of the Company's debt instruments, due to the applicable indenture trustee's ability to utilize the restricted cash for the payment of (1) debt service costs, (2) ground rents, (3) real estate or personal property taxes, (4) insurance premiums related to towers, (5) other assessments by governmental authorities and potential environmental remediation costs, or (6) a portion of advance rents from tenants. The restricted cash in excess of required reserve balances is subsequently released to the Company in accordance with the terms of the indentures. See note 17 for a reconciliation of cash, cash equivalents and restricted cash.

Receivables Allowance

An allowance for doubtful accounts is recorded as an offset to accounts receivable. The Company uses judgment in estimating this allowance and considers historical collections, current credit status, or contractual provisions. Additions to the allowance for doubtful accounts are charged either to "Site rental costs of operations" or to "Services and other costs of operations," as appropriate, and deductions from the allowance are recorded when specific accounts receivable are written off as uncollectible.

Lease Accounting

Effective January 1, 2019, the Company adopted new guidance on the recognition, measurement, presentation and disclosure of leases (commonly referred to as "ASC 842" or the "new lease standard").

The new lease standard requires lessees to recognize a right-of-use ("ROU") asset and a lease liability, initially measured at the present value of the lease payments for all leases with a term greater than 12 months. The accounting for lessors remained largely unchanged from previous guidance. See "Recently Adopted Accounting Pronouncements" for additional information regarding the adoption of the new lease standard.

General. The Company evaluates whether a contract meets the definition of a lease whenever a contract grants a party the right to control the use of an identified asset for a period of time in exchange for consideration. To the extent the identified asset is able to be shared among multiple parties, the Company has determined that one party does not have control of the identified asset and the contract is not considered a lease. The Company accounts for contracts that do not meet the definition of a lease under other relevant accounting guidance (such as ASC 606 for revenue from contracts with customers).

Lessee. For its Tower segment, the Company's lessee arrangements primarily consist of ground leases for land under towers. Ground leases for land are specific to each site, generally contain an initial term of five to 10 years and are renewable (and cancelable after a notice period) at the Company's option. The Company also enters into term easements and ground leases in which it prepays the entire term. For its Fiber segment, the Company's lessee arrangements primarily include leases of fiber assets to support the Company's small cells and fiber solutions.

The majority of the Company's lease agreements have certain termination rights that provide for cancellation after a notice period and multiple renewal options exercisable at the Company's option. The Company includes renewal option periods in its calculation of the estimated lease term when it determines the options are reasonably certain to be exercised. When such renewal options are deemed to be reasonably certain, the estimated lease term determined under ASC 842 will be greater than the non-cancelable term of the contractual arrangement. Although certain renewal periods are included in the estimated lease term, the Company would have the ability to terminate or elect to not renew a particular lease if business conditions warrant such a decision.

The Company classifies its lessee arrangements at inception as either operating leases or finance leases. A lease is classified as a finance lease if at least one of the following criteria is met: (1) the lease transfers ownership of the underlying asset to the lessee, (2) the lease grants the lessee an option to purchase the underlying asset that the lessee is reasonably certain to exercise, (3) the lease term is for a major part of the remaining economic life of the underlying asset, (4) the present value of the sum of the lease payments equals or exceeds substantially all of the fair value of the underlying asset, or (5) the underlying asset is of such a specialized nature that it is expected to have no alternative use to the lessor at the end of the lease term. A lease is classified as an operating lease if none of the five criteria described above for finance lease classification is met.

ROU assets associated with operating leases are included in "Operating lease right-of-use assets" on the Company's consolidated balance sheet. Current and long-term portions of lease liabilities related to operating leases are included in "Current portion of operating lease liabilities" and "Operating lease liabilities" on the Company's consolidated balance sheet, respectively. ROU assets represent the Company's right to use an underlying asset for the estimated lease term and lease liabilities represent the Company's present value of its future lease payments. In assessing its leases and determining its lease liability at lease commencement or upon modification, the Company was not able to readily determine the rate implicit for its lessee arrangements, and thus has used its incremental borrowing rate on a collateralized basis to determine the present value of the lease payments. The Company's ROU assets are measured as the balance of the lease liability plus any prepaid or accrued lease payments and any unamortized initial direct costs. For both the Towers and Fiber segments, operating lease expenses are recognized on a ratable basis, regardless of whether the payment terms require the Company to make payments annually, quarterly, monthly, or for the entire term in advance. Certain of the Company's ground lease and fiber lease agreements contain fixed escalation clauses (such as fixed dollar or fixed percentage increases) or inflation-based escalation clauses (such as those tied to the change in consumer price index ("CPI")). If the payment terms include fixed escalator provisions, the effect of such increases is recognized on a straight-line basis. The Company calculates the straight-line expense over the tenant contract's estimated lease term, including any renewal option periods that the Company deems reasonably certain to be exercised.

Lease agreements may also contain provisions for a contingent payment based on (1) the revenues derived from the communications infrastructure located on the leased asset, (2) the change in CPI or (3) the usage of the leased asset. The Company's contingent payments are considered variable lease payments and are (1) not included in the initial measurement of the ROU asset or lease liability due to the uncertainty of the payment amount and (2) recorded as expense in the period such contingencies are resolved.

ROU assets associated with finance leases are included in "Property and equipment, net" on the Company's consolidated balance sheet. Lease liabilities associated with finance leases are included in "Current maturities of debt and other obligations" and "Debt and other long-term obligations" on the Company's consolidated balance sheet. For both its Towers and Fiber segments, the Company measures the lease liability for finance leases using the effective interest method. The initial lease liability is increased to reflect interest on the liability and decreased to reflect payments made during the period. Interest on the lease liability is determined each period during the lease term as the amount that results in a constant periodic discount rate on the remaining balance of the liability. The Company measures ROU assets for finance leases on a ratable basis over the applicable lease term.

The Company reviews the carrying value of its ROU assets for impairment, similar to its other long-lived assets, whenever events or changes in circumstances indicate that the carrying amounts may not be recoverable. The Company could record impairments in the future if there are changes in (1) long-term market conditions, (2) expected future operating results or (3) the utility of the assets that negatively impact the fair value of its ROU assets.

Lessor. The Company's lessor arrangements primarily include tenant contracts for dedicated space (including dedicated fiber) on its shared communications infrastructure. The Company classifies its leases at inception as operating, direct financing or sales-type leases. A lease is classified as a sales-type lease if at least one of the following criteria is met: (1) the lease transfers ownership of the underlying asset to the lessee, (2) the lease grants the lessee an option to purchase the underlying asset that the lessee is reasonably certain to exercise, (3) the lease term is for a major part of the remaining economic life of the underlying asset, (4) the present value of the sum of the lease payments equals or exceeds substantially all of the fair value of the underlying assets or (5) the underlying asset is of such a specialized nature that it is expected to have no alternative use to the lessor at the end of the lease term. Furthermore, when none of the above criteria is met, a lease is classified as a direct financing lease if both of the following criteria are met: (1) the present value of the of the sum of the lease payments and any residual value guaranteed by the lessee, that is not already reflected in the lease payments, equals or exceeds the fair value of the underlying asset and (2) it is probable that the lessor will collect the lease payments plus any amount necessary to satisfy a residual value guarantee. A lease is classified as an operating lease if it does not qualify as a sales-type or direct financing lease. Currently, the Company classifies all of its lessor arrangements as operating leases.

Site rental revenues from the Company’s lessor arrangements are recognized on a straight-line, ratable basis over the fixed, non-cancelable term of the relevant tenant contract, regardless of whether the payments from the tenant are received in equal monthly amounts during the life of a tenant contract. Certain of the Company's tenant contracts contain fixed escalation clauses (such as fixed-dollar or fixed-percentage increases) or inflation-based escalation clauses (such as those tied to the change in CPI). If the payment terms call for fixed escalations, upfront payments, or rent-free periods, the rental revenue is recognized on a straight-line basis over the fixed, non-cancelable term of the agreement. When calculating straight-line site rental revenues, the Company considers all fixed elements of tenant contractual escalation provisions.

Certain of the Company's arrangements with tenants in its Fiber segment contain both lease and non-lease components. In such circumstances, the Company has determined (1) the timing and pattern of transfer for the lease and non-lease component are the same and (2) the stand-alone lease component would be classified as an operating lease. As such, the Company has aggregated certain non-lease components with lease components and has determined that the lease components (generally dedicated fiber) represent the predominant component of the arrangement.

Property and Equipment

Property and equipment is stated at cost, net of accumulated depreciation. Property and equipment includes land owned in fee and perpetual easements for land, which have no definite life. When the Company purchases fee ownership or perpetual easements for the land previously subject to ground lease, the Company reduces the value recorded as land by the amount of any associated deferred ground lease payable or unamortized above-market leases. Depreciation is computed utilizing the straight-line method at rates based upon the estimated useful lives of the various classes of assets. Depreciation of communications infrastructure is generally computed with a useful life equal to the shorter of 20 years or the term of the underlying ground lease (including optional renewal periods). Additions and permanent improvements to the Company's communications infrastructure are capitalized, while maintenance and repairs are expensed.

Labor and interest costs incurred directly related to the construction of certain property and equipment are capitalized during the construction phase of projects. For the years ended December 31, 2019, 2018 and 2017, the Company had $246 million, $212 million and $92 million in capitalized labor costs, respectively. The carrying value of property and equipment is reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of the assets may not be recoverable.

Abandonments and write-offs of property and equipment are recorded to "Asset write-down charges" on the Company's consolidated statement of operations and comprehensive income (loss) and were $17 million, $22 million and $14 million for the years ended December 31, 2019, 2018 and 2017, respectively.

Asset Retirement Obligations

Pursuant to its ground lease, easement and leased facility agreements, the Company records obligations to perform asset retirement activities, including requirements to remove communications infrastructure or remediate the space upon which certain of its communications infrastructure resides. Asset retirement obligations are included in "Other long-term liabilities" on the Company's consolidated balance sheet. The liability accretes as a result of the passage of time and the related accretion expense is included in "Depreciation, amortization and accretion" on the Company's consolidated statement of operations and comprehensive income (loss). The associated asset retirement costs are capitalized as an additional carrying amount of the related long-lived asset and depreciated over the useful life of such asset.

Goodwill

Goodwill represents the excess of the purchase price for an acquired business over the allocated value of the related net assets. The Company tests goodwill for impairment on an annual basis, regardless of whether adverse events or changes in circumstances have occurred. The annual test begins with goodwill and all intangible assets being allocated to applicable reporting units. The Company's reporting units are the same as its operating segments (Towers and Fiber). The Company then performs a qualitative assessment to determine whether it is "more likely than not" that the fair value of the reporting units is less than its carrying amount. If it is concluded that it is "more likely than not" that the fair value of a reporting unit is less than its carrying amount, it is necessary to perform the two-step goodwill impairment test. The two-step goodwill impairment test begins with a comparison of the estimated fair value of the reporting unit and the carrying value of the reporting unit. The first step, commonly referred to as a "step-one impairment test," is a screen for potential impairment while the second step measures the amount of impairment if there is an indication from the first step that one exists. The Company's measurement of the fair value for goodwill is based on an estimate of discounted expected future cash flows of the reporting unit. The Company performed its most recent annual goodwill impairment test as of October 1, 2019, which resulted in no impairments.

Intangible Assets

Intangible assets are included in "Site rental contracts and tenant relationships, net" and "Other intangible assets, net" on the Company's consolidated balance sheet and predominately consist of the estimated fair value of site rental contracts and tenant relationships or other contractual rights, such as trademarks, that are recorded in conjunction with acquisitions. The site rental contracts and tenant relationships intangible assets are comprised of (1) the current term of the existing leases, (2) the high rate of tenant retention, and (3) any associated relationships that are expected to generate value following the expiration of all renewal periods under existing leases.

The useful lives of intangible assets are estimated based on the period over which the intangible asset is expected to benefit the Company and gives consideration to the expected useful life of other assets to which the useful life may relate. Amortization expense for intangible assets is computed using the straight-line method over the estimated useful life of each of the intangible assets. The useful life of the site rental contracts and tenant relationships intangible asset is limited by the maximum depreciable life of the communications infrastructure (20 years), as a result of the interdependency of the communications infrastructure and site rental leases. In contrast, the site rental contracts and tenant relationships are estimated to provide economic benefits for several decades because of the low rate of tenant cancellations and high rate of tenant retention experienced to date. Thus, while site rental contracts and tenant relationships are valued based upon the fair value, which includes assumptions regarding both (1) tenants' exercise of optional renewals contained in the acquired leases and (2) renewals of the acquired leases past the contractual term including exercisable options, the site rental contracts and tenant relationships are amortized over a period not to exceed 20 years.

The carrying value of other intangible assets with finite useful lives will be reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of the assets may not be recoverable. The Company has a dual grouping policy for purposes of determining the unit of account for testing impairment of the site rental contracts and tenant relationships intangible assets. First, the Company pools the site rental contracts and tenant relationships with the related communications infrastructure assets into portfolio groups for purposes of determining the unit of account for impairment testing. Second and separately, the Company evaluates the site rental contracts and tenant relationships by significant tenant or by tenant grouping for individually insignificant tenants, as appropriate. If the sum of the estimated future cash flows (undiscounted) expected to result from the use or eventual disposition of an asset is less than the carrying amount of the asset, an impairment loss is recognized. Measurement of an impairment loss is based on the fair value of the asset.

See "Recently Adopted Accounting Pronouncements" for additional information regarding the adoption of the new lease standard.

Deferred Credits

Deferred credits are included in "Deferred revenues" and "Other long-term liabilities" on the Company's consolidated balance sheet and consist of the estimated fair value of below-market tenant leases for contractual interests with tenants on acquired communications infrastructure, which are amortized to site rental revenues.

Fair value for these deferred credits represents the difference between (1) the stated contractual payments to be made pursuant to the in-place lease and (2) management's estimate of fair market lease rates for each corresponding lease. Deferred credits are measured over a period equal to the estimated remaining economic lease term considering renewal provisions or economics associated with those renewal provisions, to the extent applicable. Deferred credits are amortized over their respected estimated lease terms at the time of acquisition.

See "Recently Adopted Accounting Pronouncements" for additional information regarding the adoption of the new lease standard.

Deferred Financing Costs

Third-party costs incurred to obtain financing, with the exception of costs incurred related to revolving lines of credit, are deferred and are included as a direct deduction from the carrying amount of the related debt liability in "Debt and other long-term obligations" on the Company's consolidated balance sheet. Third party costs incurred to obtain financing through a revolving line of credit are deferred and are included in "Long-term prepaid rent and other assets, net" on the Company's consolidated balance sheet.

Revenue Recognition

The Company generates site rental revenues from its core business by providing tenants with access, including space or capacity, to its shared communications infrastructure via long-term tenant contracts in various forms, including lease, license, sublease and service agreements. Providing such access over the length of the tenant contract term represents the Company’s sole performance obligation under its tenant contracts.

Site rental revenues. Site rental revenues from the Company's tenant contracts are recognized on a straight-line, ratable basis over the fixed, non-cancelable term of the relevant tenant contract, which generally ranges from five to 15 years for wireless tenants and three to 20 years related to the Company's fiber solutions tenants (including from organizations with high-bandwidth and multi-location demands), regardless of whether the payments from the tenant are received in equal monthly amounts during

the life of the tenant contract. Certain of the Company's tenant contracts contain (1) fixed escalation clauses (such as fixed dollar or fixed percentage increases) or inflation-based escalation clauses (such as those tied to the CPI), (2) multiple renewal periods exercisable at the tenant's option and (3) only limited termination rights at the applicable tenant's option through the current term. If the payment terms call for fixed escalations, upfront payments, or rent-free periods, the revenue is recognized on a straight-line basis over the fixed, non-cancelable term of the agreement. When calculating straight-line rental revenues, the Company considers all fixed elements of tenant contractual escalation provisions, even if such escalation provisions contain a variable element in addition to a minimum. The Company's assets related to straight-line site rental revenues include current amounts of $114 million and $92 million included in "Other current assets" and non-current amounts of $1.4 billion and $1.4 billion included in "Deferred site rental receivables" for the years ended December 31, 2019 and 2018, respectively. Amounts billed or received prior to being earned are deferred and reflected in "Deferred revenues" and "Other long-term liabilities." Amounts to which the Company has an unconditional right to payment, which are related to both satisfied or partially satisfied performance obligations, are recorded within "Receivables, net" on the Company's consolidated balance sheet.

Services and other revenues. As part of the Company’s effort to provide comprehensive communications infrastructure solutions, as an ancillary business, the Company offers certain services relating to its Towers segment, predominately consisting of (1) site development services and (2) installation services. Upon contract commencement, the Company assesses its services to tenants and identifies performance obligations for each promise to provide a distinct service.

The Company may have multiple performance obligations for site development services, which primarily include: structural analysis, zoning, permitting and construction drawings. For each of the above performance obligations, services revenues are recognized at completion of the applicable performance obligation, which represents the point at which the Company believes it has transferred goods or services to the tenant. The revenue recognized is based on an allocation of the transaction price among the performance obligations in a respective contract based on estimated standalone selling price. The volume and mix of site development services may vary among contracts and may include a combination of some or all of the above performance obligations. Payments generally are due within 45 to 60 days and generally do not contain variable-consideration provisions. The transaction price for the Company's tower installation services consists of amounts for (1) permanent improvements to the Company's towers that represent a lease component and (2) the performance of the service. Amounts under the Company's tower installation service agreements that represent a lease component are recognized as site rental revenues on a straight-line basis over the length of the associated estimated lease term. For the performance of the installation service, the Company has one performance obligation, which is satisfied at the time of the applicable installation or augmentation and recognized as services and other revenues. Since performance obligations are typically satisfied prior to receiving payment from tenants, the unconditional right to payment is recorded within "Receivables, net" on the Company’s consolidated balance sheet. The vast majority of the Company’s services relates to the Company’s Towers segment, and generally have a duration of one year or less.

Additional information on revenues. The following additional information on revenues reflect the impact of the Historical Adjustments, where applicable, as discussed in note 2. As of January 1, 2019 and December 31, 2019, a total of $2.7 billion and $2.9 billion of unrecognized revenue, respectively, was reported in "Deferred revenues" and "Other non-current liabilities" on the Company's consolidated balance sheet. During the year ended December 31, 2019, approximately $510 million of the January 1, 2019 unrecognized revenue balance was recognized as revenue. As of January 1, 2018, a total of $2.5 billion of unrecognized revenue was reported in "Deferred revenues" and "Other non-current liabilities" on the Company's consolidated balance sheet. During the year ended December 31, 2018, approximately $470 million of the January 1, 2018 unrecognized revenue balance was recognized as revenue.

See note 5 for further discussion regarding the Company’s revenues.

Costs of Operations

Approximately half of the Company's site rental costs of operations expenses consist of Towers ground lease expenses, and the remainder includes fiber access expenses, property taxes, repairs and maintenance expenses, employee compensation or related benefit costs, or utilities. Generally, the ground leases for land are specific to each site and are for an initial term of five years and are renewable for pre-determined periods. The Company also enters into term easements and ground leases in which it prepays the entire term in advance. Fiber access expenses primarily consist of leases of fiber assets and other access agreements to facilitate the Company's communications infrastructure.

Ground lease and fiber access expenses are recognized on a ratable basis, regardless of whether the payment terms require the Company to make payments annually, quarterly, monthly, or for the entire term in advance. Certain of the Company's ground lease and fiber access agreements contain fixed escalation clauses (such as fixed dollar or fixed percentage increases) or inflation-based escalation clauses (such as those tied to the change in CPI). If the payment terms include fixed escalator provisions, the

effect of such increases is recognized on a straight-line basis. Further, when a tenant has exercisable renewal options that would compel the Company to exercise existing renewal options, the Company has straight-lined the expense over a sufficient portion of such renewals to coincide with the final termination of the tenant's renewal options. The Company's liability related to straight-line expense is included in "Operating lease right-of-use assets" on the Company's consolidated balance sheet. The Company's assets related to prepaid agreements is included in "Prepaid expenses" and "Operating lease right-of-use assets" on the Company's consolidated balance sheet. See also "Lease Accounting—Lessee" and "Recently Adopted Accounting Pronouncements" for additional information regarding the adoption of the new lease standard.

Services and other costs of operations predominately consist of third-party service providers such as contractors and professional services firms and, to a lesser extent, internal labor costs.

Acquisition and Integration Costs

Direct or incremental costs related to a potential or completed business combination transaction are expensed as incurred. Such costs are predominately comprised of severance, retention bonuses payable to employees of an acquired enterprise, temporary employees to assist with the integration of the acquired operations, fees paid for services (such as consulting, accounting, legal, or engineering reviews), and any other costs directly associated with the transaction. These business combination costs are included in "Acquisition and integration costs" on the Company's consolidated statement of operations and comprehensive income (loss). For those transactions accounted for as asset acquisitions, these costs are capitalized as part of the purchase price. See note 4 for a discussion of the Company's recent acquisitions.

Stock-Based Compensation

Restricted Stock Units. The Company records stock-based compensation expense only for those unvested restricted stock units ("RSUs") for which the requisite service is expected to be rendered. The cumulative effect of a change in the estimated number of RSUs for which the requisite service is expected to be or has been rendered is recognized in the period of the change in the estimate. To the extent that the requisite service is rendered, compensation cost for accounting purposes is not reversed; rather, it is recognized regardless of whether or not the awards vest. A discussion of the Company's valuation techniques and related assumptions and estimates used to measure the Company's stock-based compensation is as follows:

Valuation. The fair value of RSUs without market conditions is determined based on the number of shares relating to such RSUs and the quoted price of the Company's common stock at the date of grant. The Company estimates the fair value of RSUs with market conditions granted using a Monte Carlo simulation. The Company's determination of the fair value of RSUs with market conditions on the date of grant is affected by its common stock price as well as assumptions regarding a number of highly complex or subjective variables. The determination of fair value using a Monte Carlo simulation requires the input of subjective assumptions, and other reasonable assumptions could provide differing results.

Amortization Method. The Company amortizes the fair value of all RSUs on a straight-line basis for each separately vesting tranche of the award (graded vesting schedule) over the requisite service periods.

Expected Volatility. The Company estimates the volatility of its common stock at the date of grant based on the historical volatility of its common stock.

Expected Dividend Rate. The expected dividend rate at the date of grant is based on the then-current dividend yield.

Risk-Free Rate. The Company bases the risk-free rate on the implied yield currently available on U.S. Treasury issues with an equivalent remaining term equal to the expected life of the award.

Forfeitures. The Company uses historical data and management's judgment about the future employee turnover rates to estimate the number of shares for which the requisite service period will not be rendered.

Interest Expense and Amortization of Deferred Financing Costs

The components of interest expense and amortization of deferred financing costs are as follows:



	Years Ended December 31,
	2019			2018			2017
Interest expense on debt obligations	$	682		$	635		$	582
Amortization of deferred financing costs and adjustments on long-term debt, net	21			21			19
Capitalized interest	(20		)	(15		)	(12		)
Other	—			1			2
Total	$	683		$	642		$	591

The Company amortizes deferred financing costs, discounts and premiums over the estimated term of the related borrowing using the effective interest yield method. Deferred financing costs and discounts are generally presented as a direct reduction to the related debt obligation on the Company's consolidated balance sheet.

Income Taxes

The Company operates as a REIT for U.S. federal income tax purposes. As a REIT, the Company is generally entitled to a deduction for dividends that it pays and therefore is not subject to U.S. federal corporate income tax on its net taxable income that is currently distributed to its stockholders. The Company also may be subject to certain federal, state, local and foreign taxes on its income and assets, including (1) taxes on any undistributed income, (2) taxes related to the TRSs, (3) franchise taxes, (4) property taxes, and (5) transfer taxes. In addition, the Company could in certain circumstances be required to pay an excise or penalty tax, which could be significant in amount, in order to utilize one or more relief provisions under the Internal Revenue Code of 1986, as amended ("Code"), to maintain qualification for taxation as a REIT.

Additionally, the Company has included in TRSs certain other assets and operations. Those TRS assets and operations will continue to be subject, as applicable, to federal and state corporate income taxes or to foreign taxes in the jurisdictions in which such assets and operations are located. The Company's foreign assets and operations (including its tower operations in Puerto Rico) are subject to foreign income taxes in the jurisdictions in which such assets and operations are located, regardless of whether they are included in a TRS or not. For its REIT conversion and certain subsequent acquisitions into the REIT, the Company will be subject to a federal corporate level tax rate (currently 21%) on any gain recognized from the sale of assets occurring within a specified period (generally 5 years) after the transfer date up to the amount of the built in gain that existed on the transfer date, which is based upon the fair market value of those assets in excess of the Company's tax basis on the transfer date. This gain can be offset by any remaining federal net operating loss carryforwards ("NOLs").

For the Company's TRSs, the Company accounts for income taxes using an asset and liability approach, which requires the recognition of deferred income tax assets and liabilities for the expected future tax consequences of events that have been recognized in the Company's financial statements or tax returns. Deferred income tax assets and liabilities are determined based on the temporary differences between the financial statement and tax bases of assets and liabilities using enacted tax rates. A valuation allowance is provided on deferred tax assets if it is determined that it is "more likely than not" that the asset will not be realized. The Company records a valuation allowance against deferred tax assets when it is "more likely than not" that some portion or all of the deferred tax asset will not be realized. The Company reviews the recoverability of deferred tax assets each quarter and based upon projections of future taxable income, reversing deferred tax liabilities or other known events that are expected to affect future taxable income, records a valuation allowance for assets that do not meet the "more likely than not" realization threshold. Valuation allowances may be reversed if related deferred tax assets are deemed realizable based upon changes in facts and circumstances that impact the recoverability of the asset.

The Company recognizes a tax position if it is "more likely than not" that it will be sustained upon examination. The tax position is measured at the largest amount that is greater than 50 percent likely of being realized upon ultimate settlement. The Company reports penalties and tax-related interest expense as a component of the benefit (provision) for income taxes. As of December 31, 2019 and 2018, the Company has not recorded any material penalties related to its income tax positions.

See note 11.

Per Share Information

Basic net income (loss) attributable to CCIC common stockholders, per common share, excludes dilution and is computed by dividing net income (loss) attributable to CCIC common stockholders by the weighted-average number of common shares outstanding during the period. For the years ended December 31, 2019, 2018 and 2017, diluted net income (loss) attributable to CCIC common stockholders, per common share, is computed by dividing net income (loss) attributable to CCIC common stockholders by the weighted-average number of common shares outstanding during the period, plus any potential dilutive common share equivalents, including shares issuable upon (1) the vesting of restricted stock units as determined under the treasury stock method and (2) conversion of the Company's 6.875% Mandatory Convertible Preferred Stock, Series A, par value $0.01 per share ("6.875% Convertible Preferred Stock"), as determined under the if-converted method.

A reconciliation of the numerators and denominators of the basic and diluted per share computations is shown in the table below. The table below also gives effect to the Historical Adjustments as discussed in note 2.



	Years Ended December 31,
	2019			2018			2017
				(As Restated)
Net income (loss) attributable to CCIC stockholders	$	860		$	622		$	366
Dividends/distributions on preferred stock	(113		)	(113		)	(58		)
Net income (loss) attributable to CCIC common stockholders for basic and diluted computations	$	747		$	509		$	308

Weighted-average number of common shares outstanding (in millions):
Basic weighted-average number of common stock outstanding	416			413			382
Effect of assumed dilution from potential issuance of common shares relating to RSUs	2			2			1
Diluted weighted-average number of common shares outstanding	418			415			383

Net income (loss) attributable to CCIC common stockholders, per common share:
Basic	$	1.80		$	1.23		$	0.80
Diluted	$	1.79		$	1.23		$	0.80

Dividends/distributions declared per share of common stock	$	4.58		$	4.28		$	3.90

For the years ended December 31, 2019 and 2018, 14 million and 15 million, respectively, common share equivalents related to the 6.875% Convertible Preferred Stock were excluded from the dilutive common shares because the impact of the conversion of such preferred stock would be anti-dilutive based on the Company's common stock price at the end of each respective year. See notes 12 and 13 for further discussion of our 6.875% Convertible Preferred Stock.

Fair Values

The Company's assets and liabilities recorded at fair value are categorized based upon a fair value hierarchy that ranks the quality and reliability of the information used to determine fair value. The three levels of the fair value hierarchy are (1) Level 1 — quoted prices (unadjusted) in active and accessible markets, (2) Level 2 — observable prices that are based on inputs not quoted in active markets but corroborated by market data, and (3) Level 3 — unobservable inputs and are not corroborated by market data. The Company evaluates fair value hierarchy level classifications quarterly, and transfers between levels are effective at the end of the quarterly period.

The fair value of cash and cash equivalents and restricted cash approximate the carrying value. The Company determines the fair value of its debt securities based on indicative, non-binding quotes from brokers. Quotes from brokers require judgment and are based on the brokers' interpretation of market information, including implied credit spreads for similar borrowings on recent trades or bid/ask prices or quotes from active markets if available. Foreign currency swaps are valued at settlement amounts using observable exchange rates and, if material, reflect an adjustment for the Company's and contract counterparty's credit risk. There were no changes since December 31, 2018 in the Company's valuation techniques used to measure fair values. See note 10 for a further discussion of fair values.

Recently Adopted Accounting Pronouncements

Lease Accounting

In February 2016, the FASB issued new guidance on the recognition, measurement, presentation and disclosure of leases. The new guidance requires lessees to recognize a ROU asset and a lease liability, initially measured at the present value of the lease payments for all leases with a term greater than 12 months. The accounting for lessors remains largely unchanged from existing guidance.

The Company adopted the new lease standard using a modified retrospective approach as of the effective date (i.e., January 1, 2019), without adjusting the comparative periods. The Company's adoption of the new lease standard did not result in a cumulative-effect adjustment being recognized to the opening balance of retained earnings. The new lease standard provides a package of practical expedients, whereby companies can elect not to reassess (if applicable), (1) whether existing contracts contain leases under the new definition of a lease, (2) lease classification for expired or existing leases and (3) whether previously capitalized initial direct costs would qualify for capitalization under ASC 842. The Company elected the package of practical expedients upon adoption.

The new lease standard requires lessees to recognize a lease liability, initially measured at the present value of the lease payments for all leases, and a corresponding ROU asset. The accounting for lessors remained largely unchanged from previous guidance.

Due to the recognition of the lease liability and a corresponding ROU asset, the new lease standard had a material impact on the Company's consolidated balance sheet. Additionally, certain amounts related to its lessee arrangements that were previously reported separately have been de-recognized and reclassified into "Operating lease right-of-use assets" on the Company's consolidated balance sheet. These amounts include (1) the Company's liability related to straight-line expense, formerly referred to as "Deferred ground lease payable" and previously included in "Other accrued liabilities" and "Other long-term liabilities," (2) prepaid rent expense previously included in "Prepaid expenses" and "Long-term prepaid rent and other assets, net," (3) below-market leases previously included in "Other intangible assets, net," and (4) above-market leases previously included in "Other long-term liabilities."

Notwithstanding the material impact to the Company's consolidated balance sheet, the Company's adoption of the new lease standard did not have a material impact on the Company's consolidated statement of operations or statement of cash flows. Additionally, the adoption of this guidance had no impact on the Company's operating practices, cash flows, contractual arrangements, or debt agreements (including compliance with any applicable covenants).

See "Lease Accounting" for further discussion of the Company's updated accounting policies for leases.

Recent Accounting Pronouncements Not Yet Adopted

No new accounting pronouncements issued but not yet adopted are expected to have a material impact on the Company's consolidated financial statements.

Acquisitions

12 Months Ended

Dec. 31, 2019

Acquisitions

Acquisitions

2017 FiberNet Acquisition

On November 1, 2016, the Company announced that it had entered into a definitive agreement to acquire FPL FiberNet Holdings, LLC and certain other subsidiaries of NextEra Energy, Inc. (collectively, "FiberNet") for approximately $1.5 billion in cash, subject to certain limited adjustments ("FiberNet Acquisition"). FiberNet is a fiber services provider in Florida and Texas that, as of the agreement date, owned or had rights to approximately 11,500 route miles of fiber installed or under construction, inclusive of approximately 6,000 route miles in top metro markets. On January 17, 2017, the Company closed the FiberNet Acquisition, which was financed using proceeds from its November 2016 issuance of 11.4 million shares of common stock, which generated net proceeds of $1.0 billion and borrowings under the 2016 Revolver (see note 9).

The final purchase price allocation for the FiberNet Acquisition is shown below.



Final Purchase Price Allocation
Current assets	$	52
Property and equipment	438
Goodwill^(a)	778
Other intangible assets, net^(b)	327
Other non-current assets	2
Current liabilities	(41		)
Other non-current liabilities	(35		)
Net assets acquired^(c)	$	1,521


(a)	The final purchase price allocation for the FiberNet Acquisition resulted in the recognition of goodwill based on:


•	the Company's expectation to leverage the FiberNet fiber footprint to support new small cells and fiber solutions,


•	the complementary nature of the FiberNet fiber to the Company's existing fiber assets and its location in top metro markets where the Company expects to see wireless carrier network investments,


•	the Company's belief that the acquired fiber assets are well-positioned to benefit from the continued growth trends in the demand for data, and


•	other intangibles not qualified for separate recognition, including the assembled workforce.


(b)	Predominantly comprised of site rental contracts and tenant relationships.


(c)	The vast majority of the assets have been included in the Company's REIT. As such, no deferred taxes were recorded in connection with the FiberNet Acquisition.

2017 Wilcon Acquisition

On April 17, 2017, the Company announced that it had entered into a definitive agreement to acquire Wilcon Holdings LLC ("Wilcon") from Pamlico Holdings and other unit holders of Wilcon for approximately $600 million in cash, subject to certain limited adjustments ("Wilcon Acquisition"). Wilcon is a fiber services provider that owns approximately 1,900 route miles of fiber, primarily in Los Angeles and San Diego. On June 26, 2017, the Company closed the Wilcon Acquisition, which was financed using proceeds from the May 2017 Common Stock Offering (as defined in note 12) and the 4.750% Senior Notes (as defined in note 9) offering.

The final purchase price of approximately $600 million was primarily comprised of other intangible assets (predominantly comprised of site rental contracts and tenant relationships) of approximately $140 million, property and equipment of approximately $150 million, goodwill of approximately $360 million, offset by deferred revenues of approximately $40 million.

The final purchase price allocation for the Wilcon Acquisition resulted in the recognition of goodwill based on (1) the Company's expectation to leverage the Wilcon fiber footprint to support new small cells and fiber solutions, (2) the complementary nature of the Wilcon fiber to the Company's existing fiber assets and its location primarily in Los Angeles and San Diego, where the Company expects to see wireless carrier network investments, (3) the Company's belief that the acquired fiber assets are well positioned to benefit from the continued growth trends in the demand for data, and (4) other intangibles not qualified for separate recognition, including the assembled workforce.

2017 Lightower Acquisition

On July 18, 2017, the Company announced that it had entered into a definitive agreement to acquire LTS Group Holdings LLC ("Lightower") from Berkshire Partners, Pamlico Capital and other investors for approximately $7.1 billion in cash, subject to certain limited adjustments ("Lightower Acquisition"). Lightower owns or has rights to approximately 32,000 route miles of fiber located primarily in top metro markets in the Northeast, including Boston, New York and Philadelphia. On November 1, 2017, the Company closed the Lightower Acquisition, which was financed using (1) cash on hand, including proceeds from the July 2017 Equity Offerings (as defined in note 12) and the August 2017 Senior Notes (as defined in note 9) offering, and (2) borrowings under the 2016 Revolver.

The final purchase price allocation for the Lightower Acquisition is shown below.



Final Purchase Price Allocation
Current assets	$	99
Property and equipment	2,194
Goodwill^(a)	3,171
Other intangible assets, net^(b)	2,177
Other non-current assets	27
Current liabilities	(176		)
Other non-current liabilities	(342		)
Net assets acquired^(c)	$	7,150


(a)	The final purchase price allocation for the Lightower Acquisition resulted in the recognition of goodwill based on:


•	the Company's expectation to leverage the Lightower fiber footprint to support new small cells and fiber solutions,


•	the complementary nature of the Lightower fiber to the Company's existing fiber assets and its location where the Company expects to see wireless carrier network investments,


•	the Company's belief that the acquired fiber assets are well-positioned to benefit from the continued growth trends in the demand for data, and


•	other intangibles not qualified for separate recognition, including the assembled workforce.


(b)	Predominantly comprised of site rental contracts and tenant relationships.


(c)	The vast majority of the assets have been included in the Company's REIT. As such, no deferred taxes were recorded in connection with the Lightower Acquisition.

Actual and Pro Forma Financial Information

Net revenues and net income (loss) attributable to acquisitions completed during the year ended December 31, 2017 are included in the Company's consolidated statements of operations and comprehensive income (loss), since the respective date each acquisition was completed. For the year ended December 31, 2017, the FiberNet Acquisition, Wilcon Acquisition and Lightower Acquisition (collectively, "2017 Acquisitions") resulted in an increase to consolidated net revenues of $314 million.

The unaudited pro forma financial results for the year ended December 31, 2017 combine the historical results of the Company, along with the historical results of the 2017 Acquisitions. The following table presents the unaudited pro forma consolidated results of operations of the Company as if each acquisition was completed as of January 1, 2016. The unaudited pro forma amounts are presented for illustrative purposes only and are not necessarily indicative of future consolidated results of operations. The table below also gives effect to the Historical Adjustments as discussed in note 2.



	Twelve Months Ended December 31, 2017
	(As Restated)
Net revenues	$	4,949
Income (loss) before income taxes	$	462		^(b)(c)
Benefit (provision) for income taxes	$	(29	)	^(a)
Net income (loss)	$	433		^(b)(c)
Basic net income (loss) attributable to CCIC common stockholders, per common share	$	0.68		^(c)(d)
Diluted net income (loss) attributable to CCIC common stockholders, per common share	$	0.67		^(c)(d)

(a)

For the year ended December 31, 2017, amounts are inclusive of pro forma adjustments to the benefit (provision) for income tax as a result of the Company's REIT status. The vast majority of the assets and related income from the FiberNet Acquisition, the Wilcon Acquisition, and the Lightower Acquisition are included in the Company's REIT. The remaining assets are included in the Company's TRS. For purposes of the unaudited pro forma financial results, an adjustment has been made to reflect the additional tax impact of the income related to the TRS assets.


(b)	For the year ended December 31, 2017, amounts are inclusive of pro forma adjustments to depreciation and amortization of $247 million, related to property and equipment and intangibles recorded as a result of the 2017 Acquisitions.


(c)	Pro forma amounts include the impact of the interest expense and common stock share issuances associated with the related debt and equity financings for the 2017 Acquisitions (see above and notes 9 and 12).

(d)

Pro forma amounts include the impact of the preferred stock dividends related to the Mandatory Convertible Preferred Stock Offering (as defined in note 12) for the Lightower Acquisition (see above and note 12).

Revenue (Notes)

12 Months Ended

Dec. 31, 2019

Revenue from Contract with Customer [Abstract]

Revenue from Contract with Customer [Text Block]

Revenues

The following table is a summary of the contracted amounts owed to the Company by tenants pursuant to tenant contracts in effect as of December 31, 2019. As of December 31, 2019, the weighted-average remaining term of tenant contracts is approximately five years, exclusive of renewals exercisable at the tenant's option.



	Years Ending December 31,
	2020		2021		2022		2023		2024		Thereafter		Total
Contracted amounts^(a)	$	4,177	$	3,986	$	3,758	$	3,141	$	2,405	$	6,908	$	24,375


(a)	Based on the nature of the contract, tenant contracts are accounted for pursuant to relevant lease accounting (ASC 842) or revenue accounting (ASC 606) guidance. Excludes amounts related to services, as those contracts generally have a duration of one year or less.

See notes 3 and 15 for further discussion regarding the Company's lessor arrangements and note 16 for further information regarding the Company's operating segments.

Property and Equipment

12 Months Ended

Dec. 31, 2019

Property, Plant and Equipment [Abstract]

Property and Equipment

The major classes of property and equipment are summarized in the table below. The information below also gives effect to the Historical Adjustments as discussed in note 2.



	Estimated Useful Lives	As of December 31,
	Estimated Useful Lives	2019			2018
					(As Restated)
Land^(a)	—	$	2,080		$	1,981
Buildings	40 years	147			134
Communications infrastructure assets	1-20 years	20,521			18,683
Information technology assets and other	2-7 years	506			443
Construction in process	—	1,080			975
Total gross property and equipment		24,334			22,216
Less: accumulated depreciation		(9,668		)	(8,563		)
Total property and equipment, net		$	14,666		$	13,653


(a)	Includes land owned through fee interests and perpetual easements.

Depreciation expense for the years ended December 31, 2019, 2018 and 2017 was $1.1 billion, $1.1 billion and $914 million, respectively. See note 15 for a discussion of finance leases recorded as "Property and equipment, net" on the Company's consolidated balance sheet.

Goodwill and Intangible Assets

12 Months Ended

Dec. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

Goodwill

The change in the carrying value of goodwill for the year ended December 31, 2018 is as follows:



Balance as of December 31, 2017	$	10,021
Adjustments due to other acquisitions, purchase price allocations and other, net	57
Balance as of December 31, 2018	$	10,078

There were no changes in the carrying value of goodwill during the year ended December 31, 2019.

Intangibles

The following is a summary of the Company's intangible assets. See note 4 for further discussion of the Company's acquisitions.



	As of December 31, 2019							As of December 31, 2018
	Gross Carrying Value		Accumulated Amortization			Net Book Value		Gross Carrying Value		Accumulated Amortization			Net Book Value
Site rental contracts and tenant relationships	$	7,761	$	(2,997	)	$	4,764	$	7,787	$	(2,578	)	$	5,209
Other intangible assets^(a)	143		(71		)	72		494		(187		)	307
Total	$	7,904	$	(3,068	)	$	4,836	$	8,281	$	(2,765	)	$	5,516


(a)	See "Recently Adopted Accounting Pronouncements" in note 3 for a discussion of the recently adopted new lease standard, including with respect to below-market leases previously classified as intangible assets.

Amortization expense related to intangible assets is classified as follows on the Company's consolidated statement of operations and comprehensive income (loss):



	For Years Ended December 31,
Classification	2019		2018		2017
Depreciation, amortization and accretion	$	428	$	428	$	314
Site rental costs of operations^(a)	—		17		18
Total amortization expense	$	428	$	445	$	332

(a)

Amortization expense of intangible assets classified as "Site rental costs of operations" on the Company's consolidated statement of operations and comprehensive income (loss) for the years ended December 31, 2018 and 2017 represented amortization of below-market leases. Effective January 1, 2019, these below-market leases were de-recognized and reclassified from "Other intangible assets, net" to the "Operating lease right-of-use assets" on the Company's consolidated balance sheet. See "Recently Adopted Accounting Pronouncements" in note 3 for a discussion of the recently adopted new lease standard.

The estimated annual amortization expense related to intangible assets for the years ending December 31, 2020 to 2024 is as follows:



	Years Ending December 31,
	2020		2021		2022		2023		2024
Estimated annual amortization	$	427	$	427	$	427	$	427	$	384

Other Liabilities (Notes)

12 Months Ended

Dec. 31, 2019

Other Liabilities [Abstract]

Other Liabilities

Other long-term liabilities

The following is a summary of the components of "Other long-term liabilities" as presented on the Company's consolidated balance sheet. The table below also gives effect to the Historical Adjustments, as discussed in note 2. See also note 3.



	December 31,
	2019		2018
			(As Restated)
Deferred rental revenues	$	1,814	$	1,618
Deferred ground lease payable^(a)	—		603
Above-market leases for land interests, net^(a)	—		181
Deferred credits, net	434		499
Asset retirement obligation	227		192
Deferred income tax liabilities	8		7
Other long-term liabilities	33		10
Total	$	2,516	$	3,110


(a)	See "Recently Adopted Accounting Pronouncements" in note 3 for a discussion of the recently adopted new lease standard, including with respect to deferred ground lease payable and above-market leases previously classified as other long-term liabilities.

Pursuant to its ground lease, easement and leased facility agreements, the Company has the obligation to perform certain asset retirement activities, including requirements upon contract termination to remove communications infrastructure or remediate the space upon which its communications infrastructure resides. Accretion expense related to liabilities for retirement obligations amounted to $15 million, $14 million and $13 million for the years ended December 31, 2019, 2018 and 2017, respectively. As of December 31, 2019, the estimated undiscounted future cash outlay for asset retirement obligations was approximately $1.0 billion. See note 3.

For the years ended December 31, 2018 and 2017, the Company recorded $18 million and $19 million, respectively, as a decrease to "Site rental costs of operations" for the amortization of above-market leases for land interests under the Company's towers. Effective January 1, 2019, these above-market leases were de-recognized and reclassified from "Other long-term liabilities" into the "Operating lease right-of-use assets" on the Company's consolidated balance sheet. See "Recently Adopted Accounting Pronouncements" in note 3 for a discussion of the recently adopted new lease standard.

For the years ended December 31, 2019, 2018 and 2017, the Company recognized $65 million, $69 million and $37 million, respectively, in "Site rental revenues" related to the amortization of below-market tenant leases. The following table summarizes the estimated annual amounts related to below-market tenant leases expected to be amortized into site rental revenues for the years ending December 31, 2020 to 2024 are as follows:



	Years Ending December 31,
	2020		2021		2022		2023		2024
Below-market tenant leases	$	57	$	53	$	49	$	45	$	41

Other accrued liabilities

Other accrued liabilities included accrued payroll and other accrued compensation of $174 million and $157 million, respectively, as of December 31, 2019 and 2018.

Debt and Other Obligations

12 Months Ended

Dec. 31, 2019

Debt and Other Obligations [Abstract]

Debt and Other Obligations

The table below sets forth the Company's debt and other obligations as of December 31, 2019.



	Original Issue Date		Contractual Maturity Date		Outstanding Balance as of December 31,					Stated Interest Rate as of December 31,
	Original Issue Date		Contractual Maturity Date		2019			2018		2019		^(a)
Secured Notes, Series 2009-1, Class A-1	July 2009		Aug. 2019	^(d)	$	—		$	12	N/A
3.849% Secured Notes	Dec. 2012		Apr. 2023		995			994		3.9	%
Secured Notes, Series 2009-1, Class A-2	July 2009		Aug. 2029	^(d)	67			70		9.0	%
Tower Revenue Notes, Series 2015-1	May 2015		May 2042	^(b)(c)	298			298		3.2	%
Tower Revenue Notes, Series 2018-1	July 2018		July 2043	^(b)(c)	248			247		3.7	%
Tower Revenue Notes, Series 2015-2	May 2015		May 2045	^(b)(c)	694			693		3.7	%
Tower Revenue Notes, Series 2018-2	July 2018		July 2048	^(b)(c)	742			742		4.2	%
Finance leases and other obligations	Various		Various	^(e)	227			227		Various
Total secured debt					3,271			3,283
2016 Revolver	Jan. 2016		June 2024		525		^(f)	1,075		2.8	%	^(g)
2016 Term Loan A	Jan. 2016		June 2024		2,310			2,354		2.9	%	^(g)
Commercial Paper Notes	Various	^(h)	Various	^(h)	155			—		Various		⁽ⁱ⁾
3.400% Senior Notes	Feb./May 2016		Feb. 2021		850			850		3.4	%
2.250% Senior Notes	Sept. 2016		Sept. 2021		698			697		2.3	%
4.875% Senior Notes	Apr. 2014		Apr. 2022		846			844		4.9	%
5.250% Senior Notes	Oct. 2012		Jan. 2023		1,644			1,641		5.3	%
3.150% Senior Notes	Jan. 2018		July 2023		744			742		3.2	%
3.200% Senior Notes	Aug. 2017		Sept. 2024		744			743		3.2	%
4.450% Senior Notes	Feb. 2016		Feb. 2026		893			892		4.5	%
3.700% Senior Notes	May 2016		June 2026		744			744		3.7	%
4.000% Senior Notes	Feb. 2017		Mar. 2027		495			494		4.0	%
3.650% Senior Notes	Aug. 2017		Sept. 2027		993			992		3.7	%
3.800% Senior Notes	Jan. 2018		Feb. 2028		990			988		3.8	%
4.300% Senior Notes	Feb. 2019		Feb. 2029		592			—		4.3	%
3.100% Senior Notes	Aug. 2019		Nov. 2029		543			—		3.1	%
4.750% Senior Notes	May 2017		May 2047		344			343		4.8	%
5.200% Senior Notes	Feb. 2019		Feb. 2049		395			—		5.2	%
4.000% Senior Notes	Aug. 2019		Nov. 2049		345			—		4.0	%
Total unsecured debt					$	14,850		$	13,399
Total debt and other obligations					$	18,121		$	16,682
Less: current maturities and short-term debt and other current obligations					$	100		$	107
Non-current portion of long-term debt and other long-term obligations					$	18,021		$	16,575


(a)	Represents the weighted-average stated interest rate.


(b)	The Tower Revenue Notes, Series 2015-1 and 2015-2 ("May 2015 Tower Revenue Notes") and Tower Revenue Notes, Series 2018-1 and 2018-2 ("July 2018 Tower Revenue Notes") are collectively referred to herein as "Tower Revenue Notes."

(c)

If the respective series of Tower Revenue Notes are not paid in full on or prior to an applicable anticipated repayment date, then Excess Cash Flow (as defined in the indenture governing the terms of such notes) of the issuers of such notes will be used to repay principal of the applicable series and class of the Tower Revenue Notes, and additional interest (of an additional approximately 5% per annum) will accrue on the respective Tower Revenue Notes. As of December 31, 2019, the Tower Revenue Notes have principal amounts of $300 million, $250 million, $700 million and $750 million, with anticipated repayment dates in 2022, 2023, 2025 and 2028, respectively.


(d)	The Secured Notes, Series 2009-1, Class A-1 and Secured Notes, Series 2009-1, Class A-2 are collectively referred to herein as "2009 Securitized Notes."


(e)	The Company's finance leases and other obligations relate to land, fiber, vehicles, and other assets and bear interest rates ranging up to 10% and mature in periods ranging from less than one year to approximately 30 years.


(f)	As of December 31, 2019, the undrawn availability under the 2016 Revolver was $4.5 billion.

(g)

Both the 2016 Revolver and senior unsecured term loan A facility ("2016 Term Loan A") bear interest at a rate per annum equal to LIBOR plus a credit spread ranging from 1.000% to 1.750%, based on the Company's senior unsecured debt rating. The Company pays a commitment fee ranging from 0.125% to 0.350%, based on the Company's senior unsecured debt rating, per annum on the undrawn available amount under the 2016 Revolver.


(h)	The maturities of the Commercial Paper Notes, as defined below, when outstanding, may vary but may not exceed 397 days from the date of issue.


(i)	The weighted-average interest rate for the outstanding commercial paper under the CP Program, as defined below, was 2.1%.

The credit agreement governing the Company's 2016 Credit Facility contains financial maintenance covenants. The Company is currently in compliance with these financial maintenance covenants, and based upon current expectations, the Company believes it will continue to comply with its financial maintenance covenants. In addition, certain of the Company's debt agreements also contain restrictive covenants that place restrictions on CCIC or its subsidiaries and may limit the Company's ability to, among other things, incur additional debt and liens, purchase the Company's securities, make capital expenditures, dispose of assets, undertake transactions with affiliates, make other investments, pay dividends or distribute excess cash flow.

Bank Debt

In January 2016, the Company established the 2016 Credit Facility, which was originally comprised of (1) a $2.5 billion 2016 Revolver maturing in January 2021, (2) a $2.0 billion 2016 Term Loan A maturing in January 2021 and (3) a $1.0 billion senior unsecured 364-day revolving credit facility ("364-Day Facility") maturing in January 2017. The Company used the net proceeds from the 2016 Credit Facility (1) to repay the then outstanding 2012 Credit Facility and (2) for general corporate purposes. In February 2016, the Company used a portion of the net proceeds from the February 2016 Senior Notes (as defined below) offering to repay in full all outstanding borrowings under the then outstanding 364-Day Facility.

In February 2017, the Company entered into an amendment to the 2016 Credit Facility to (1) incur additional term loans in an aggregate principal amount of $500 million and (2) extend the maturity of both the 2016 Term Loan A and the 2016 Revolver to January 2022.

In August 2017, the Company entered into an amendment to the 2016 Credit Facility to (1) increase commitments on the 2016 Revolver by $1.0 billion, for total 2016 Revolver commitments of $3.5 billion, and (2) extend the maturity of the Credit Facility to August 2022.

In June 2018, the Company entered into an amendment to the 2016 Credit Facility to (1) increase commitments on the 2016 Revolver by $750 million, for total 2016 Revolver commitments of $4.25 billion, and (2) extend the maturity of the Credit Facility from August 2022 to June 2023.

In April 2019, the Company established a commercial paper program ("CP Program"), pursuant to which the Company may issue short-term, unsecured commercial paper notes ("Commercial Paper Notes"). Commercial Paper Notes may be issued, repaid and re-issued from time to time, with an aggregate principal amount of Commercial Paper Notes outstanding under the CP Program at any time not to exceed $1.0 billion. The net proceeds of the Commercial Paper Notes are expected to be used for general corporate purposes. The Commercial Paper Notes are issued under customary terms in the commercial paper market and are issued at a discount from par or, alternatively, can be issued at par and bear varying interest rates on a fixed or floating basis. For the year ended December 31, 2019, the Company had net issuances of $155 million under the CP Program. At any point in time, the Company intends to maintain available commitments under its 2016 Revolver in an amount at least equal to the amount of Commercial Paper Notes outstanding. While any outstanding commercial paper issuances generally have short-term maturities, the Company classifies the outstanding issuances as long-term based on its ability and intent to refinance the outstanding issuances on a long-term basis.

In June 2019, the Company entered into an amendment to the 2016 Credit Facility to (1) increase commitments on the 2016 Revolver by $750 million, for total 2016 Revolver commitments of $5.0 billion, and (2) extend the maturity of the Credit Facility from June 2023 to June 2024.

Securitized Debt

The Tower Revenue Notes and the 2009 Securitized Notes (collectively, "Securitized Debt") are obligations of special purpose entities and their direct and indirect subsidiaries (each an "issuer"), all of which are wholly-owned, indirect subsidiaries of CCIC. The Tower Revenue Notes and 2009 Securitized Notes are governed by separate indentures. The May 2015 Tower Revenue Notes and July 2018 Tower Revenue Notes are governed by one indenture and consist of multiple series of notes, each with its own anticipated repayment date.

The net proceeds of the May 2015 Tower Revenue Notes, together with proceeds received from the Company's sale of CCAL, were primarily used to (1) repay $250 million aggregate principal amount of August 2010 Tower Revenue Notes which had an anticipated repayment date of August 2015, (2) repay all of the then outstanding WCP Secured Wireless Site Contracts Revenue Notes, Series 2010-1 ("WCP Securitized Notes"), (3) repay portions of outstanding borrowings under the 2012 Credit Facility and (4) pay related fees and expenses.

In July 2018, the Company issued $1.0 billion aggregate principal amount of Senior Secured Tower Revenue Notes ("July 2018 Tower Revenue Notes"), which were issued pursuant to the existing indenture and have similar terms and security as the Company's existing Tower Revenue Notes. The July 2018 Tower Revenue Notes consist of (1) $250 million aggregate principal amount of 3.720% senior secured tower revenue notes ("3.72% Notes") with an anticipated repayment date of July 2023 and a final maturity of July 2043 and (2) $750 million aggregate principal amount of 4.241% senior secured tower revenue notes ("4.241% Notes") with an anticipated repayment date of July 2028 and a final maturity of July 2048. The Company used the net proceeds of the July 2018 Tower Revenue Notes, together with cash on hand, to repay all of the previously outstanding Tower Revenue Notes, Series 2010-6 and to pay related fees and expenses. In addition to the July 2018 Tower Revenue Notes described above, in connection with Exchange Act risk retention requirements ("Risk Retention Rules"), an indirect subsidiary of the Company issued and a majority-owned affiliate of the Company purchased approximately $53 million of the Senior Secured Tower Revenue Notes, Series 2018-1, Class R-2028 to retain an eligible horizontal residual interest (as defined in the Risk Retention Rules) in an amount equal to at least 5% of the fair value of the July 2018 Tower Revenue Notes.

The Securitized Debt is paid solely from the cash flows generated by the operation of the towers held directly and indirectly by the issuers of the respective Securitized Debt. The Securitized Debt is secured by, among other things, (1) a security interest in substantially all of the applicable issuers' assignable personal property, (2) a pledge of the equity interests in each applicable issuer and (3) a security interest in the applicable issuers' leases with tenants to lease tower space (space licenses). The governing instruments of two indirect subsidiaries ("Crown Atlantic" and "Crown GT") of the issuers of the Tower Revenue Notes generally prevent them from issuing debt and granting liens on their assets without the approval of a subsidiary of Verizon Communications. Consequently, while distributions paid by Crown Atlantic and Crown GT will service the Tower Revenue Notes, the Tower Revenue Notes are not obligations of, nor are the Tower Revenue Notes secured by the cash flows or any other assets of, Crown Atlantic and Crown GT. As of December 31, 2019, the Securitized Debt was collateralized with personal property and equipment with an aggregate net book value of approximately $1.0 billion, exclusive of Crown Atlantic and Crown GT personal property and equipment.

The excess cash flows from the issuers of the Securitized Debt, after the payment of principal, interest, reserves, expenses and management fees, are distributed to the Company in accordance with the terms of the indentures. If the Debt Service Coverage Ratio ("DSCR") (as defined in the applicable governing loan agreement) as of the end of any calendar quarter falls to a certain level, then all excess cash flow of the issuers of the applicable debt instrument will be deposited into a reserve account instead of being released to the Company. The funds in the reserve account will not be released to the Company until the DSCR exceeds a certain level for two consecutive calendar quarters. If the DSCR falls below a certain level as of the end of any calendar quarter, then all cash on deposit in the reserve account along with future excess cash flows of the issuers will be applied to prepay the debt with applicable prepayment consideration.

The Company may repay the May 2015 Tower Revenue Notes or the 2009 Securitized Notes in whole or in part at any time after the second anniversary of the applicable issuance date and the July 2018 Tower Revenue Notes from the date of issuance, provided in each case that such prepayment is accompanied by any applicable prepayment consideration. The Securitized Debt has covenants and restrictions customary for rated securitizations, including provisions prohibiting the issuers from incurring additional indebtedness or further encumbering their assets.

Bonds—Senior Notes

In August 2019, the Company issued $900 million aggregate principal amount of senior unsecured notes ("August 2019 Senior Notes"), which consisted of (1) $550 million aggregate principal amount of 3.100% senior unsecured notes due November 2029 and (2) $350 million aggregate principal amount of 4.000% senior unsecured notes due November 2049. The Company used the net proceeds of the August 2019 Senior Notes offering to repay outstanding borrowings under the 2016 Revolver and CP Program.

In February 2019, the Company issued $1.0 billion aggregate principal amount of senior unsecured notes ("February 2019 Senior Notes"), which consisted of (1) $600 million aggregate principal amount of 4.300% senior unsecured notes due February 2029 and (2) $400 million aggregate principal amount of 5.200% senior unsecured notes due February 2049. The Company used the net proceeds of the February 2019 Senior Notes offering to repay a portion of the outstanding borrowings under the 2016 Revolver.

In January 2018, the Company issued $750 million aggregate principal amount of 3.150% senior unsecured notes due July 2023 and $1.0 billion aggregate principal amount of 3.800% senior unsecured notes due February 2028 (collectively, "January 2018 Senior Notes"). The Company used the net proceeds of the January 2018 Senior Notes offering to repay (1) in full the January 2010 Tower Revenue Notes and (2) a portion of the outstanding borrowings under the 2016 Revolver.

In February 2017, the Company issued $500 million aggregate principal amount of 4.000% senior unsecured notes due March 2027 ("4.000% Senior Notes"). The Company used the net proceeds from the 4.000% Senior Notes offering to repay a portion of the outstanding borrowings under the 2016 Revolver.

In May 2017, the Company issued $350 million aggregate principal amount of 4.750% senior unsecured notes due May 2047 ("4.750% Senior Notes"). The Company used the net proceeds from the 4.750% Senior Notes offering to partially fund the Wilcon Acquisition and to repay a portion of the outstanding borrowings under the 2016 Revolver.

In August 2017, the Company issued $1.75 billion aggregate principal amount of senior unsecured notes ("August 2017 Senior Notes"), which consisted of (1) $750 million aggregate principal amount of 3.200% senior unsecured notes due September 2024 ("3.200% Senior Notes") and (2) $1.0 billion aggregate principal amount of 3.650% senior unsecured notes due September 2027 ("3.650% Senior Notes"). The Company used the net proceeds from the August 2017 Senior Notes offering to partially fund the Lightower Acquisition and pay related fees and expenses.

In February 2016, the Company issued $1.5 billion aggregate principal amount of senior unsecured notes ("February 2016 Senior Notes"), which consisted of (1) $600 million aggregate principal amount of 3.400% senior notes due February 2021 ("3.400% Senior Notes") and (2) $900 million aggregate principal amount of 4.450% senior unsecured notes due February 2026 ("4.450% Senior Notes"). The Company used the net proceeds from the February 2016 Senior Notes offering, together with cash on hand, to (1) repay in full all outstanding borrowings under the then outstanding 364-Day Facility and (2) repay $500 million of outstanding borrowings under the 2016 Revolver.

In May 2016, the Company issued $1.0 billion aggregate principal amount of senior unsecured notes ("May 2016 Senior Notes"), which consisted of (1) $250 million aggregate principal amount of additional 3.400% Senior Notes pursuant to the same indenture as the 3.400% Senior Notes issued in the February 2016 Senior Notes offering and (2) $750 million aggregate principal amount of 3.700% senior unsecured notes due June 2026 ("3.700% Senior Notes"). The Company used the net proceeds from the May 2016 Senior Notes offering to repay in full the Tower Revenue Notes, Series 2010-2 and Series 2010-5, each issued by certain of its subsidiaries, and to repay a portion of the outstanding borrowings under the 2016 Revolver.

In September 2016, the Company issued $700 million aggregate principal amount of 2.250% senior unsecured notes ("2.250% Senior Notes") due September 2021. The Company used the net proceeds from the 2.250% Senior Notes offering to (1) repay $500 million aggregate principal amount of 2.381% secured notes due 2017 ("2.381% Secured Notes") issued by certain of its subsidiaries and (2) repay a portion of the outstanding borrowings under the 2016 Revolver.

In April 2014, the Company issued $850 million aggregate principal amount of 4.875% senior unsecured notes due April 2022 ("4.875% Senior Notes"). The net proceeds from the offering were approximately $839 million, after the deduction of associated fees. The Company utilized the net proceeds from the 4.875% Senior Notes offering (1) to repay $300 million of the January 2010 Tower Revenue Notes with an anticipated repayment date of January 2015 and (2) to redeem all of the then outstanding 7.125% senior unsecured notes due 2019.

In October 2012, the Company issued $1.65 billion aggregate principal amount of 5.250% senior unsecured notes due 2023 ("5.250% Senior Notes"). The Company used the net proceeds from the 5.250% Senior Notes offering to partially fund the T-Mobile Acquisition.

Each of the 5.250% Senior Notes, 4.875% Senior Notes, February 2016 Senior Notes, May 2016 Senior Notes, 2.250% Senior Notes, 4.000% Senior Notes, 4.750% Senior Notes, August 2017 Senior Notes, January 2018 Senior Notes, February 2019 Senior Notes and August 2019 Senior Notes (collectively, "Senior Notes") are senior unsecured obligations of the Company and rank equally with all of the Company's existing and future senior unsecured indebtedness, including obligations under the 2016 Credit Facility, and senior to all of the Company's future subordinated indebtedness. The Senior Notes are structurally subordinated to all existing and future liabilities and obligations of the Company's subsidiaries. The Company's subsidiaries are not guarantors of the Senior Notes.

CCIC may redeem any of the Senior Notes in whole or in part at any time at a price equal to 100% of the principal amount to be redeemed, plus a make whole premium, if applicable, and accrued and unpaid interest, if any, to the date of redemption.

Bonds—Secured Notes

In December 2012, the Company issued $1.0 billion aggregate principal amount of 3.849% secured notes due 2023 ("3.849% Secured Notes"). The 3.849% Secured Notes were issued and are guaranteed by the same subsidiaries of CCIC that had previously issued and guaranteed the 7.750% senior unsecured notes due 2017 ("7.750% Secured Notes"). The 3.849% Secured Notes are secured by a pledge of the equity interests of such subsidiaries. The 3.849% Secured Notes are not guaranteed by and are not

obligations of CCIC or any of its subsidiaries other than the issuers and guarantors of the 3.849% Secured Notes. The 3.849% Secured Notes will be paid solely from the cash flows generated from operations of the towers held directly and indirectly by the issuers and the guarantors of such notes. The Company used the net proceeds from the issuance of the 3.849% Secured Notes to repurchase and redeem the then outstanding 7.750% Secured Notes and a portion of the then outstanding 9.000% senior notes due 2011. The 3.849% Secured Notes may be redeemed at any time at a price equal to 100% of the principal amount, plus a make whole premium, and accrued and unpaid interest, if any to the redemption date.

Previously Outstanding Indebtedness

See above for a discussion of the Company's recent redemptions and repayments of debt.

Contractual Maturities

The following are the scheduled contractual maturities of the total debt and other long-term obligations of the Company outstanding at December 31, 2019. These maturities reflect contractual maturity dates and do not consider the principal payments that will commence following the anticipated repayment dates on the Tower Revenue Notes. If the Tower Revenue Notes are not paid in full on or prior to their respective anticipated repayment dates, as applicable, then the Excess Cash Flow (as defined in the indenture) of the issuers of such notes will be used to repay principal of the applicable series and class of the Tower Revenue Notes and additional interest (of an additional approximately 5% per annum) will accrue on the Tower Revenue Notes.



	Years Ending December 31,
	2020		2021		2022		2023		2024		Thereafter		Total Cash Obligations		Unamortized Adjustments, Net			Total Debt and Other Obligations Outstanding
Scheduled contractual maturities	$	253	$	1,675	$	1,000	$	3,604	$	3,172	$	8,531	$	18,235	$	(114	)	$	18,121

Debt Purchases and Redemptions

The following is a summary of the purchases and redemptions of debt during the years ended December 31, 2019, 2018 and 2017.



	Year Ended December 31, 2019
	Principal Amount		Cash Paid^(a)		Gains (losses)^(b)
Secured Notes, Series 2009-1, Class A-1	$	12	$	12	$	(1	)
2016 Term Loan A	—		—		(1		)
Total	$	12	$	12	$	(2	)


(a)	Exclusive of accrued interest.


(b)	Inclusive of the write-off of the respective deferred financing costs.



	Year Ended December 31, 2018
	Principal Amount		Cash Paid^(a)		Gains (losses)^(b)
Tower Revenue Notes, Series 2010-3	$	1,250	$	1,318	$	(71	)
2016 Term Loan A	—		—		(3		)
Tower Revenues Notes, Series 2010-6	1,000		1,028		(32		)
Total	$	2,250	$	2,346	$	(106	)


(a)	Exclusive of accrued interest.


(b)	Inclusive of the write-off of the respective deferred financing costs.



	Year Ended December 31, 2017
	Principal Amount		Cash Paid		Gains (losses)^(a)
2016 Term Loan A	$	—	$	—	$	(4	)
Total	$	—	$	—	$	(4	)

(a)

The losses represent write-off of deferred financing costs.

Fair Value Disclosures

12 Months Ended

Dec. 31, 2019

Fair Value Disclosures [Abstract]

Fair Value Disclosures

The following table shows the estimated fair values of the Company's financial instruments, along with the carrying amounts of the related assets (liabilities). See also note 3.



	Level in Fair Value Hierarchy	December 31, 2019				December 31, 2018
	Level in Fair Value Hierarchy	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Assets:
Cash and cash equivalents	1	$	196	$	196	$	277	$	277
Restricted cash, current and non-current	1	142		142		136		136
Liabilities:
Total debt and other obligations	2	$	18,121	$	19,170	$	16,682	$	16,562

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Income Taxes

12 Months Ended

Dec. 31, 2019

Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]

Income Taxes

Income (loss) from continuing operations before income taxes by geographic area is summarized in the table below. The table below also gives effect to the Historical Adjustments, as discussed in note 2.



	Years Ended December 31,
	2019		2018		2017
			(As Restated)
Domestic	$	850	$	618	$	372
Foreign^(a)	31		23		20
Total	$	881	$	641	$	392


(a)	Inclusive of income (loss) before income taxes from Puerto Rico.

The benefit (provision) for income taxes consists of the following:



	Years Ended December 31,
	2019			2018			2017
Current:
Federal	$	(6	)	$	(5	)	$	(3	)
Foreign	(8		)	(7		)	(6		)
State	(5		)	(5		)	(2		)
Total current	(19		)	(17		)	(11		)
Deferred:
Federal	—			—			(18		)
Foreign	(2		)	(2		)	3
Total deferred	(2		)	(2		)	(15		)
Total tax benefit (provision)	$	(21	)	$	(19	)	$	(26	)

A reconciliation between the benefit (provision) for income taxes and the amount computed by applying the federal statutory income tax rate to the income (loss) before income taxes is as follows:



	Years Ended December 31,
	2019			2018			2017
				(As Restated)
Benefit (provision) for income taxes at statutory rate	$	(185	)	$	(135	)	$	(137	)
Tax effect of foreign income (losses)	1			1			—
Tax adjustment related to REIT operations	178			128			131
State tax (provision) benefit, net of federal	(5		)	(4		)	(2		)
Foreign tax	(10		)	(9		)	(3		)
Effects of tax law change^(a)	—			—			(15		)
Total	$	(21	)	$	(19	)	$	(26	)


(a)	Pursuant to the Tax Cuts and Jobs Act, which was signed into law in December 2017, the Company was required to write down its net federal deferred tax asset in the amount of $17 million as a result of the reduction in the federal corporate tax rate offset by a benefit of $2 million related to the refund of the Company's alternative minimum tax credit carryforward.

The components of the net deferred income tax assets and liabilities are as follows:



	December 31,
	2019		2018
Deferred income tax liabilities:
Property and equipment	$	6	$	5
Deferred site rental receivable	7		7
Total deferred income tax liabilities	13		12
Deferred income tax assets:
Intangible assets	3		4
Net operating loss carryforwards^(a)	18		18
Straight-line rent expense liability^(b)	3		2
Accrued liabilities	5		5
Other	2		3
Valuation allowances	—		(1		)
Total deferred income tax assets, net	31		31
Net deferred income tax asset (liabilities)	$	18	$	19


(a)	Balance results from the Company's foreign NOLs. Due to the Company's REIT status, no federal or state NOLs result in the Company recording a deferred income tax asset. See further discussion surrounding the Company's NOL balances below.


(b)	See "Recently Adopted Accounting Pronouncements" in note 3 for a discussion of the recently adopted new lease standard.

The Company operates as a REIT for U.S. federal income tax purposes.

The components of the net deferred income tax assets (liabilities) are as follows:



	December 31, 2019								December 31, 2018
Classification	Gross			Valuation Allowance		Net			Gross			Valuation Allowance			Net
Federal	$	25		$	—	$	25		$	25		$	—		$	25
State	1			—		1			1			—			1
Foreign	(8		)	—		(8		)	(6		)	(1		)	(7		)
Total	$	18		$	—	$	18		$	20		$	(1	)	$	19

At December 31, 2019, the Company had U.S. federal and state NOLs of approximately $1.5 billion and $0.6 billion, respectively, which are available to offset future taxable income. These amounts include approximately $237 million of losses related to stock-based compensation. The Company also has foreign NOLs of $48 million. If not utilized, the Company's U.S. federal NOLs expire starting in 2025 and ending in 2036, the state NOLs expire starting in 2020 and ending in 2036, and the foreign NOLs expire starting in 2022 and ending in 2037. The utilization of the NOLs is subject to certain limitations. The Company's U.S. federal and state income tax returns generally remain open to examination by taxing authorities until three years after the applicable NOLs have been used or expired. The remaining valuation allowance relates to certain foreign net deferred tax assets (primarily NOLs).

As of December 31, 2019, there were no unrecognized tax benefits that would impact the effective tax rate, if recognized.

From time to time, the Company is subject to examinations by various tax authorities in jurisdictions in which the Company has business operations. At this time, the Company is not subject to an Internal Revenue Service examination. The Australian Taxation Office is conducting an audit of the tax consequences for Australian tax purposes of the Company's sale of CCAL. The primary focus of the audit relates to the Company's asset valuation methodology and whether the Company should be subject to Australian capital gains tax on its sale of CCAL. The Company believes its valuation methodology is appropriate, that it is not subject to such tax, and that the ultimate resolution of the audit will not be material to the Company’s financial position.

In addition, the Company regularly assesses the likelihood of additional assessments in each of the tax jurisdictions in which it has business operations. The Company has no uncertain tax positions as of December 31, 2019. Additionally, the Company does not believe any such additional assessments arising from other examinations or audits will have a material effect on the Company's financial statements.

As of December 31, 2019, the Company's deferred tax assets are included in "Long-term prepaid rent and other assets, net" and the Company's deferred tax liabilities are included in "Other long-term liabilities" on the Company's consolidated balance sheet.

Stockholders' Equity

12 Months Ended

Dec. 31, 2019

Stockholders' Equity

Equity

2018 "At-The-Market" Stock Offering Program

In April 2018, the Company established an "at-the-market" stock offering program through which it may issue and sell shares of its common stock having an aggregate gross sales price of up to $750 million ("2018 ATM Program"). Sales under the 2018 ATM Program may be made by means of ordinary brokers' transactions on the NYSE or otherwise at market prices prevailing at the time of sale, at prices related to prevailing market prices or, subject to our specific instructions, at negotiated prices. The Company intends to use the net proceeds from any sales under the 2018 ATM Program for general corporate purposes, which may include (1) the funding of future acquisitions or investments or (2) the repayment or repurchase of any outstanding indebtedness. The Company has not sold any shares of common stock under the 2018 ATM Program. As of December 31, 2019, the Company had $750 million of gross sales of common stock availability remaining under the 2018 ATM Program.

May 2017 Common Stock Offering

On May 1, 2017, the Company completed an offering of 4.75 million shares of its common stock, which generated net proceeds of approximately $442 million ("May 2017 Common Stock Offering"). The Company used the net proceeds of the May 2017 Common Stock Offering to partially fund the Wilcon Acquisition.

July 2017 Equity Offerings

On July 26, 2017, the Company completed an offering of 40.15 million shares of common stock, including certain additional shares sold pursuant to the underwriters' option, which generated net proceeds of approximately $3.8 billion ("July 2017 Common Stock Offering"). The Company used the net proceeds of the July 2017 Common Stock Offering to partially fund the Lightower Acquisition and pay related fees and expenses.

On July 26, 2017, the Company completed an offering of 1.65 million shares of the Company's 6.875% Convertible Preferred Stock, at $1,000 per share, including certain additional shares sold pursuant to the underwriters' option, which generated net proceeds of approximately $1.6 billion ("Mandatory Convertible Preferred Stock Offering"). The Company used the net proceeds from the Mandatory Convertible Preferred Stock Offering to partially fund the Lightower Acquisition and pay related fees and expenses.

The holders of the 6.875% Convertible Preferred Stock are entitled to receive cumulative dividends, when and if declared by the Company's board of directors, at the rate of 6.875% on the liquidation preference of $1,000 per share. The dividends may be paid in cash or, subject to certain limitations, in shares of the Company's common stock or any combination of cash and shares of common stock on February 1, May 1, August 1 and November 1 of each year, commencing on November 1, 2017 and to, and including, August 1, 2020. The terms of the 6.875% Convertible Preferred Stock provide that, unless accumulated dividends have been paid or set aside for payment on all outstanding shares of 6.875% Convertible Preferred Stock for all past dividend periods, no dividends may be declared or paid on common stock.

Unless converted earlier, each outstanding share of the 6.875% Convertible Preferred Stock will automatically convert into shares of the Company's common stock on August 1, 2020 into between 8.7772 and 10.5326 shares of the Company's common stock, depending on the applicable market value of the common stock and subject to certain anti-dilution adjustments. At any time prior to August 1, 2020, holders of the 6.875% Convertible Preferred Stock may elect to convert all or a portion of their shares into common stock at the minimum conversion rate of 8.7772, subject to certain anti-dilution adjustments.

The July 2017 Common Stock Offering and Mandatory Convertible Preferred Stock Offering are collectively referred to herein as "July 2017 Equity Offerings."

March 2018 Common Stock Offering

In March 2018, the Company completed an offering of 8 million shares of its common stock, which generated net proceeds of $841 million ("March 2018 Equity Financing"). The Company used the net proceeds from the March 2018 Equity Financing for general corporate purposes, including repayment of outstanding indebtedness.

Declaration and Payment of Dividends

During the year ended December 31, 2019, the following dividends were declared or paid:



Equity Type	Declaration Date	Record Date	Payment Date	Dividends Per Share		Aggregate Payment Amount (In millions)
Common Stock	February 21, 2019	March 15, 2019	March 29, 2019	$	1.125	$	471	^(a)
Common Stock	May 16, 2019	June 14, 2019	June 28, 2019	$	1.125	$	471	^(a)
Common Stock	August 8, 2019	September 13, 2019	September 30, 2019	$	1.125	$	472	^(a)
Common Stock	October 14, 2019	December 13, 2019	December 31, 2019	$	1.20	$	502	^(a)
6.875% Convertible Preferred Stock	December 11, 2018	January 15, 2019	February 1, 2019	$	17.1875	$	28
6.875% Convertible Preferred Stock	March 19, 2019	April 15, 2019	May 1, 2019	$	17.1875	$	28
6.875% Convertible Preferred Stock	June 17, 2019	July 15, 2019	August 1, 2019	$	17.1875	$	28
6.875% Convertible Preferred Stock	September 18, 2019	October 15, 2019	November 1, 2019	$	17.1875	$	28
6.875% Convertible Preferred Stock	December 9, 2019	January 15, 2020	February 3, 2020	$	17.1875	$	28


(a)	Inclusive of dividends accrued for holders of unvested RSUs, which will be paid when and if the RSUs vest.

See note 19 for further discussion of common stock dividends.

Tax Treatment of Dividends

The following table summarizes, for income tax purposes, the nature of dividends paid during 2019 on the Company's common stock and 6.875% Convertible Preferred Stock.



Equity Type	Payment Date	Cash Distribution (per share)		Ordinary Taxable Dividend (per share)		Qualified Taxable Dividend (per share)^(a)		Section 199A Dividend (per share)		Non-Taxable Distribution (per share)
Common Stock	March 29, 2019	$	1.125	$	0.824	$	0.007	$	0.817	$	0.301
Common Stock	June 28, 2019	$	1.125	$	0.824	$	0.007	$	0.817	$	0.301
Common Stock	September 30, 2019	$	1.125	$	0.824	$	0.007	$	0.817	$	0.301
Common Stock	December 31, 2019	$	1.20	$	0.879	$	0.008	$	0.871	$	0.321
6.875% Convertible Preferred Stock	February 1, 2019	$	17.1875	$	17.1875	$	0.1490	$	17.0385	$	—
6.875% Convertible Preferred Stock	May 1, 2019	$	17.1875	$	17.1875	$	0.1490	$	17.0385	$	—
6.875% Convertible Preferred Stock	August 1, 2019	$	17.1875	$	17.1875	$	0.1490	$	17.0385	$	—
6.875% Convertible Preferred Stock	November 1, 2019	$	17.1875	$	17.1875	$	0.1490	$	17.0385	$	—


(a)	Qualified taxable dividend and section 199A dividend amounts are included in ordinary taxable dividend amounts.

Purchases of the Company's Common Stock

During the years ended December 31, 2019, 2018 and 2017, the Company purchased 0.4 million, 0.3 million and 0.3 million shares of common stock, respectively, utilizing $44 million, $34 million and $23 million in cash, respectively.

Stock-based Compensation

12 Months Ended

Dec. 31, 2019

Share-based Payment Arrangement, Noncash Expense [Abstract]

Stock-based Compensation

Stock Compensation Plans

Pursuant to a stockholder approved plan, the Company has and is permitted to grant stock-based awards to certain employees, consultants or non-employee directors of the Company and its subsidiaries or affiliates. As of December 31, 2019, the Company has 9 million shares available for future issuance pursuant to its 2013 Long-Term Incentive Plan ("LTI Plan"). Of these shares remaining available for future issuance, approximately 3 million shares may be issued pursuant to outstanding RSUs granted under the LTI Plan.

Restricted Stock Units

The Company issues RSUs to certain executives and employees. Each RSU represents a contingent right to receive one share of common stock subject to satisfaction of the applicable vesting terms. The RSUs granted to certain executives and employees include (1) annual performance awards that often include provisions for forfeiture by the employee if certain market performance of the Company's common stock is not achieved, (2) new hire or promotional awards that generally contain only service conditions, or (3) other awards related to specific business initiatives or compensation objectives including retention and merger integration. Generally, such awards vest over periods of approximately 3 years.

The following is a summary of the RSU activity during the year ended December 31, 2019.



	RSUs
	(In millions)
Outstanding at the beginning of year	3
Granted	1
Vested	(1	)
Forfeited	—
Outstanding at end of year	3

The Company granted approximately 1 million RSUs to the Company's executives and certain other employees for each of the years ended December 31, 2019, 2018 and 2017. The weighted-average grant-date fair value per share of the grants for the years ended December 31, 2019, 2018 and 2017 was $106.55, $91.52 and $73.52 per share, respectively. The weighted-average requisite service period for the RSUs granted during 2019 was approximately 2.4 years.

The approximately 1 million RSUs granted during the year ended December 31, 2019, were comprised of (1) approximately 0.8 million RSUs that time vest over a three-year period and (2) approximately 0.5 million RSUs to the Company's executives and certain other employees which may vest on the third anniversary of the grant date based upon (1) the Company's total shareholder returns (defined as share price appreciation plus the value of dividends paid during the performance period) and (2) the Company's total shareholder return compared to that of the companies in the Standard & Poor's 500 Index. Certain RSU agreements contain provisions that result in forfeiture by the employee of any unvested shares in the event that the Company's common stock does not achieve certain performance targets. To the extent that the requisite service is rendered, compensation cost for accounting purposes is not reversed; rather, it is recognized regardless of whether or not the market performance target is achieved.

The following table summarizes the assumptions used in the Monte Carlo simulation to determine the grant-date fair value for the awards granted during the years ended December 31, 2019, 2018 and 2017, respectively, with market conditions.



	Years Ended December 31,
	2019		2018		2017
Risk-free rate	2.5	%	2.4	%	1.5	%
Expected volatility	18	%	18	%	18	%
Expected dividend rate	4.0	%	3.8	%	4.4	%

The Company recognized aggregate stock-based compensation expense related to RSUs of $96 million, $90 million and $89 million for the years ended December 31, 2019, 2018 and 2017, respectively. The aggregate unrecognized compensation (net of estimated forfeitures) related to RSUs at December 31, 2019 is $89 million and is estimated to be recognized over a weighted-average period of less than one year.

The following table is a summary of the awards vested during the years ended December 31, 2019, 2018 and 2017.



Years Ended December 31,	Total Shares Vested	Fair Value on Vesting Date
	(In millions of shares)
2019	1	$	135
2018	1	107
2017	1	67

Stock-based Compensation

The following table discloses the components of stock-based compensation expense.



	Years Ended December 31,
	2019		2018		2017
Stock-based compensation expense:
Site rental costs of operations	$	19	$	17	$	15
Services and other costs of operations	7		8		5
Selling, general and administrative expenses	90		83		76
Total stock-based compensation	$	116	$	108	$	96

Commitments and Contingencies	12 Months Ended
Commitments and Contingencies	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies The Company is involved in various claims, lawsuits or proceedings arising in the ordinary course of business. While there are uncertainties inherent in the ultimate outcome of such matters and it is impossible to presently determine the ultimate costs or losses that may be incurred, if any, management believes the resolution of such uncertainties and the incurrence of such costs should not have a material adverse effect on the Company's consolidated financial position or results of operations. Additionally, the Company and certain of its subsidiaries are contingently liable for commitments or performance guarantees arising in the ordinary course of business, including certain letters of credit or surety bonds. See note 15 for a discussion of the operating lease commitments. In addition, see note 1 for a discussion of the Company's option to purchase approximately 53% of its towers at the end of their respective lease terms. The Company has no obligation to exercise such purchase options. SEC Investigation In September 2019, the Company received a subpoena from the SEC requesting certain documents from 2015 through the present, primarily related to the Company's long-standing capitalization and expense policies for tenant upgrades and installations in its services business. Prior to receiving this subpoena, the Company previously provided information to the SEC related to certain services-related transactions. The Company is cooperating fully with the SEC's investigation and cannot predict the ultimate timing, scope or outcome of this matter. Shareholder Litigation Putative securities class action suits have been filed against the Company on behalf of investors that purchased or otherwise acquired stock of the Company between February 26, 2018 and February 26, 2020. The allegations relate to allegedly false or misleading statements or other failures to disclose information about the Company’s business, operations and prospects. The complaints seek money damages and the award of plaintiffs’ costs and expenses incurred in the respective class action. The Company is currently unable to determine the likelihood of an outcome or estimate a range of reasonably possible losses, if any. The Company believes these class action suits are without merit and intends to defend itself vigorously.

Leases (Notes)

12 Months Ended

Dec. 31, 2019

Leases [Text Block]

Leases

The following information is presented with respect to the Company's tenant contracts that are subject to the new lease accounting standard and excludes those contracts outside the scope of that standard.

Lessor Tenant Leases

See note 5 for further information regarding the contractual amounts owed to the Company pursuant to tenant contracts in effect as of December 31, 2019 and other information.

Lessee Operating Leases

The components of the Company's operating lease expense are as follows:



	Year Ended December 31,
	2019
Lease cost:
Operating lease expense^(a)	$	648
Variable lease expense^(b)	133
Total lease expense^(c)	$	781


(a)	Represents the Company's operating lease expense related to its ROU assets for the twelve months ended December 31, 2019.


(b)	Represents the Company's expense related to contingent payments for operating leases (such as payments based on revenues derived from the communications infrastructure located on the leased asset) for the twelve months ended December 31, 2019. Such contingencies are recognized as expense in the period they are resolved.


(c)	Excludes those direct operating expenses accounted for pursuant to accounting guidance outside the scope of ASC 842.

Lessee Finance Leases

The vast majority of the Company's finance leases are related to the towers subject to prepaid master lease agreements with AT&T, Sprint and T-Mobile and are recorded as "Property and equipment, net" on the consolidated balance sheet. See note 1 for

further discussion of the Company's prepaid master lease agreements and note 3 for further information regarding the Company's adoption method of the new lease standard. Finance leases and associated leasehold improvements related to gross property and equipment and accumulated depreciation were $4.4 billion and $2.1 billion, respectively, as of December 31, 2019. For the twelve months ended December 31, 2019, the Company recorded $216 million to "Depreciation, amortization and accretion" related to finance leases.

Other Lessee Information

As of December 31, 2019, the Company's weighted-average remaining lease term and weighted-average discount rate for operating leases were 17 years and 4.3%, respectively.

The following table is a summary of the Company's maturities of operating lease liabilities as of December 31, 2019:



	Years Ending December 31,
	2020		2021		2022		2023		2024		Thereafter		Total undiscounted lease payments		Less: Imputed interest			Total operating lease liabilities
Operating leases^(a)	$	534	$	528	$	524	$	520	$	517	$	6,357	$	8,980	$	(3,170	)	$	5,810


(a)	Excludes the Company's contingent payments for operating leases (such as payments based on revenues derived from the communications infrastructure located on the leased asset) as such arrangements are excluded from the Company's operating lease liability. Such contingencies are recognized as expense in the period they are resolved.

Comparative Information from 2018 Form 10-K

The Company adopted ASC 842 using a modified retrospective approach as of the effective date, without adjusting the comparative periods and therefore, as required by ASC 842, has included the following comparative information from note 14 to the consolidated financial statements in its 2018 Form 10-K.

The operating lease payments included in the table below include payments for certain renewal periods exercisable at the Company's option that are deemed reasonably assured to be exercised and an estimate of contingent payments based on revenues and gross margins derived from existing tenant leases.



	Years Ending December 31,
	2019		2020		2021		2022		2023		Thereafter		Total
Operating leases	$	640	$	631	$	628	$	623	$	619	$	8,054	$	11,195

Operating Segments and Concentrations of Credit Risk

12 Months Ended

Dec. 31, 2019

Operating Segments and Concentrations of Credit Risks

Operating Segments and Concentrations of Credit Risk

Operating Segments

The Company's operating segments consist of (1) Towers and (2) Fiber. The Towers segment provides access, including space or capacity, to the Company's approximately 40,000 towers geographically dispersed throughout the U.S. The Towers segment also reflects certain ancillary services relating to the Company's towers, predominately consisting of site development services and installation services. The Fiber segment provides access, including space or capacity, to the Company's approximately 80,000 route miles of fiber primarily supporting small cell networks and fiber solutions geographically dispersed throughout the U.S.

The tables below for the years ended December 31, 2018 and 2017 also give effect to the Historical Adjustments as discussed in note 2. Each of the Historical Adjustments for the years ended December 31, 2018 and 2017 are attributable only to the Towers segment.



	Year Ended December 31, 2019
	Towers		Fiber		Other		Consolidated Total
Segment site rental revenues	$	3,389	$	1,704			$	5,093
Segment services and other revenues	653		17				670
Segment revenues	4,042		1,721				5,763
Segment site rental cost of operations	864		559				1,423
Segment services and other cost of operations	506		11				517
Segment cost of operations^(a)(b)	1,370		570				1,940
Segment site rental gross margin	2,525		1,145				3,670
Segment services and other gross margin	147		6				153
Segment selling, general and administrative expenses^(b)	96		195				291
Segment operating profit (loss)	2,576		956				3,532
Other selling, general and administrative expenses^(b)					$	233	233
Stock-based compensation expense					116		116
Depreciation, amortization and accretion					1,572		1,572
Interest expense and amortization of deferred financing costs					683		683
Other (income) expenses to reconcile to income (loss) before income taxes^(c)					47		47
Income (loss) before income taxes							$	881
Capital expenditures	$	543	$	1,473	$	41	$	2,057
Total assets (at year end)	$	22,357	$	15,389	$	711	$	38,457
Total goodwill (at year end)	$	5,127	$	4,951	$	—	$	10,078


(a)	Exclusive of depreciation, amortization and accretion shown separately


(b)	Segment cost of operations for the year ended December 31, 2019 excludes (1) stock-based compensation expense of $26 million and (2) prepaid lease purchase price adjustments of $20 million. For the year ended December 31, 2019, segment selling, general and administrative expenses exclude stock-based compensation expense of $90 million.


(c)	See consolidated statement of operations for further information.



	Year Ended December 31, 2018
	(As Restated)
	Towers		Fiber		Other		Consolidated Total
Segment site rental revenues	$	3,196	$	1,600			$	4,796
Segment services and other revenues	558		16				574
Segment revenues	3,754		1,616				5,370
Segment site rental cost of operations	848		525				1,373
Segment services and other cost of operations	415		11				426
Segment cost of operations^(a)(b)	1,263		536				1,799
Segment site rental gross margin	2,348		1,075				3,423
Segment services and other gross margin	143		5				148
Segment selling, general and administrative expenses^(b)	110		179				289
Segment operating profit (loss)	2,381		901				3,282
Other selling, general and administrative expenses^(b)					$	191	191
Stock-based compensation expense					108		108
Depreciation, amortization and accretion					1,527		1,527
Interest expense and amortization of deferred financing costs					642		642
Other (income) expenses to reconcile to income (loss) before income taxes^(c)					173		173
Income (loss) before income taxes							$	641
Capital expenditures	$	440	$	1,264	$	35	$	1,739
Total assets (at year end)	$	17,644	$	14,512	$	606	$	32,762
Total goodwill (at year end)	$	5,127	$	4,951	$	—	$	10,078


(a)	Exclusive of depreciation, amortization and accretion shown separately


(b)	Segment cost of operations for the year ended December 31, 2018 excludes (1) stock-based compensation expense of $25 million and (2) prepaid lease purchase price adjustments of $20 million. For the year ended December 31, 2018, segment selling, general and administrative expenses exclude stock-based compensation expense of $83 million.


(c)	See consolidated statement of operations for further information.



	Year Ended December 31, 2017
	(As Restated)
	Towers		Fiber		Other		Consolidated Total
Segment site rental revenues	$	2,965	$	769			$	3,734
Segment services and other revenues	471		50				521
Segment revenues	3,436		819				4,255
Segment site rental cost of operations	845		264				1,109
Segment services and other cost of operations	353		41				394
Segment cost of operations^(a)(b)	1,198		305				1,503
Segment site rental gross margin	2,120		505				2,625
Segment services and other gross margin	118		9				127
Segment selling, general and administrative expenses^(b)	94		89				183
Segment operating profit (loss)	2,144		425				2,569
Other selling, general and administrative expenses^(b)					$	167	167
Stock-based compensation expense					96		96
Depreciation, amortization and accretion					1,241		1,241
Interest expense and amortization of deferred financing costs					591		591
Other (income) expenses to reconcile to income (loss) before income taxes^(c)					82		82
Income (loss) before income taxes							$	392
Capital expenditures	$	407	$	782	$	28	$	1,217
Total assets (at year end)	$	17,918	$	13,669	$	619	$	32,206
Total goodwill (at year end)	$	5,127	$	4,894	$	—	$	10,021


(a)	Exclusive of depreciation, amortization and accretion shown separately


(b)	Segment cost of operations for the year ended December 31, 2017 excludes (1) stock-based compensation expense of $20 million and (2) prepaid lease purchase price adjustments of $20 million. For the year ended December 31, 2017, segment selling, general and administrative expenses exclude stock-based compensation expense of $76 million.

(c)

See consolidated statement of operations for further information.

Major Tenants

The following table summarizes the percentage of the consolidated revenues for those tenants accounting for more than 10% of the consolidated revenues. The table below also gives effect to the Historical Adjustments, as discussed in note 2.



	Years Ended December 31,
	2019		2018		2017
			(As Restated)
T-Mobile	22	%	19	%	22	%
AT&T	21	%	20	%	25	%
Verizon Wireless	19	%	20	%	16	%
Sprint	14	%	15	%	23	%
Total	76	%	74	%	86	%

Concentrations of Credit Risk

Financial instruments that potentially subject the Company to concentrations of credit risk are primarily cash and cash equivalents, restricted cash and trade receivables. The Company mitigates its risk with respect to cash and cash equivalents by maintaining such deposits at high credit quality financial institutions and monitoring the credit ratings of those institutions. The Company's restricted cash is predominately held and directed by a trustee (see note 3).

The Company derives the largest portion of its revenues from tenants in the wireless industry. The Company also has a concentration in its volume of business with T-Mobile, AT&T, Verizon Wireless and Sprint or their agents that accounts for a significant portion of the Company's revenues, receivables and deferred site rental receivables. The Company mitigates its concentrations of credit risk with respect to trade receivables by actively monitoring the creditworthiness of its tenants, the use of tenant leases with contractually determinable payment terms or proactive management of past due balances.

Supplemental Cash Flow Information

12 Months Ended

Dec. 31, 2019

Supplemental Cash Flow Information [Abstract]

Cash Flow, Supplemental Disclosures [Text Block]

Supplemental Cash Flow Information

The following table is a summary of the supplemental cash flow information during the years ended December 31, 2019, 2018 and 2017.



	Years Ended December 31,
	2019		2018		2017
Supplemental disclosure of cash flow information:
Cash payments related to operating lease liabilities^(a)(b)	$	541	$	—	$	—
Interest paid	661		619		547
Income taxes paid	16		17		16
Supplemental disclosure of non-cash investing and financing activities:
New ROU assets obtained in exchange for operating lease liabilities^(b)	431		—		—
Increase in accounts payable for purchases of property and equipment	2		29		2
Purchase of property and equipment under finance leases and installment land purchases	33		40		32
Increase in preferred stock dividends accrued but not paid (see note 12)	—		—		28


(a)	Excludes the Company's contingent payments pursuant to operating leases, which are recorded as expense in the period such contingencies are resolved.


(b)	See "Recently Adopted Accounting Pronouncements" in note 3 for a discussion of the recently adopted new lease standard.

The reconciliation of cash, cash equivalents, and restricted cash reported within various lines on the consolidated balance sheet to amounts reported in the consolidated statement of cash flows is shown below.



	As of December 31,
	2019		2018		2017
Cash and cash equivalents	$	196	$	277	$	314
Restricted cash, current	137		131		121
Restricted cash reported within long-term prepaid rent and other assets, net	5		5		5
Cash, cash equivalents and restricted cash	$	338	$	413	$	440

Quarterly Financial Information (Unaudited)

12 Months Ended

Dec. 31, 2019

Selected Quarterly Financial Information [Abstract]

Quarterly Financial Information (Unaudited)

Quarterly financial information for the years ended December 31, 2019 and 2018 is summarized in the table below. The tables below gives effect to the Historical Adjustments, where applicable, as discussed in note 2.



	Three Months Ended^(a)
	December 31			September 30			June 30			March 31
				(As Restated)
2019:
Net revenues	$	1,426		$	1,482		$	1,447		$	1,408
Operating income (loss)	379			423			389			367
Gains (losses) on retirement of long-term obligations	—			—			(1		)	(1		)
Benefit (provision) for income taxes	(6		)	(5		)	(4		)	(6		)
Net income (loss) attributable to CCIC stockholders	208			242			216			193
Net income (loss) attributable to CCIC common stockholders, per common share:
Basic	$	0.43		$	0.51		$	0.45		$	0.40
Diluted	$	0.43		$	0.51		$	0.45		$	0.40

	Three Months Ended^(a)
	December 31			September 30			June 30			March 31
	(As Restated)
2018:
Net revenues	$	1,406		$	1,361		$	1,319		$	1,284
Operating income (loss)	367			346			335			335
Gains (losses) on retirement of long-term obligations	—			(32		)	(3		)	(71		)
Benefit (provision) for income taxes	(5		)	(5		)	(5		)	(4		)
Net income (loss) attributable to CCIC stockholders	201			151			170			100
Net income (loss) attributable to CCIC common stockholders, per common share:
Basic	$	0.42		$	0.30		$	0.34		$	0.18
Diluted	$	0.42		$	0.30		$	0.34		$	0.18


(a)	The sum of quarterly information may not agree to year-to-date information due to rounding.

Restatement of Previously Issued Quarterly Unaudited Financial Information

The following tables represent the Company’s restatement of previously issued unaudited quarterly financial information for each of the applicable interim periods during the nine months ended September 30, 2019 and twelve months ended December 31, 2018. The amounts previously issued were derived from the Company’s respective Quarterly Reports on Form 10-Q, and, for the fourth quarter of 2018, from its 2018 Annual Report on Form 10-K. As discussed in note 2, the following tables reflect the impact of the Historical Adjustments, where applicable, on each interim period below. The sum of quarterly information may not agree to year-to-date information due to rounding.



	September 30, 2019			June 30, 2019			March 31, 2019
	(As Restated)
ASSETS
Current assets:
Cash and cash equivalents	$	182		$	288		$	245
Restricted cash	138			136			158
Receivables, net	667			591			545
Prepaid expenses^(a)	99			111			85
Other current assets	167			168			160
Total current assets	1,253			1,294			1,193
Deferred site rental receivables	1,413			1,391			1,373
Property and equipment, net	14,393			14,128			13,860
Operating lease right-of-use assets^(a)	6,112			6,053			5,969
Goodwill	10,078			10,078			10,078
Other intangible assets, net^(a)	4,968			5,074			5,178
Long-term prepaid rent and other assets, net^(a)	104			106			104
Total assets	$	38,321		$	38,124		$	37,755
LIABILITIES AND EQUITY
Current liabilities:
Accounts payable	$	368		$	337		$	311
Accrued interest	110			166			107
Deferred revenues	638			607			598
Other accrued liabilities^(a)	335			305			262
Current maturities of debt and other obligations	100			98			96
Current portion of operating lease liabilities^(a)	296			289			287
Total current liabilities	1,847			1,802			1,661
Debt and other long-term obligations	17,750			17,471			17,120
Operating lease liabilities^(a)	5,480			5,427			5,338
Other long-term liabilities^(a)	2,458			2,411			2,369
Total liabilities	27,535			27,111			26,488
Commitments and contingencies (see note 14)
CCIC stockholders' equity:
Common stock, $0.01 par value	4			4			4
6.875% Mandatory Convertible Preferred Stock, Series A, $0.01 par value	—			—			—
Additional paid-in capital	17,829			17,801			17,769
Accumulated other comprehensive income (loss)	(5		)	(5		)	(5		)
Dividends/distributions in excess of earnings	(7,042		)	(6,787		)	(6,501		)
Total equity	10,786			11,013			11,267
Total liabilities and equity	$	38,321		$	38,124		$	37,755


(a)	See "Recently Adopted Accounting Pronouncements" in note 3 for a discussion of the recently adopted new lease standard.



	September 30, 2018			June 30, 2018			March 31, 2018
	(As Restated)
ASSETS
Current assets:
Cash and cash equivalents	$	323		$	206		$	220
Restricted cash	125			125			120
Receivables, net	471			455			402
Prepaid expenses^(a)	182			197			175
Other current assets	148			181			157
Total current assets	1,249			1,164			1,074
Deferred site rental receivables	1,357			1,303			1,304
Property and equipment, net	13,410			13,195			13,028
Goodwill	10,074			10,075			10,075
Other intangible assets, net^(a)	5,620			5,729			5,854
Long-term prepaid rent and other assets, net^(a)	911			885			892
Total assets	$	32,621		$	32,351		$	32,227
LIABILITIES AND EQUITY
Current liabilities:
Accounts payable	$	302		$	272		$	248
Accrued interest	101			154			104
Deferred revenues	568			554			539
Other accrued liabilities^(a)	306			272			240
Current maturities of debt and other obligations	111			112			130
Total current liabilities	1,388			1,364			1,261
Debt and other long-term obligations	16,313			15,844			15,616
Other long-term liabilities^(a)	3,074			3,014			2,946
Total liabilities	20,775			20,222			19,823
Commitments and contingencies (see note 14)
CCIC stockholders' equity:
Common stock, $0.01 par value	4			4			4
6.875% Mandatory Convertible Preferred Stock, Series A, $0.01 par value	—			—			—
Additional paid-in capital	17,743			17,711			17,690
Accumulated other comprehensive income (loss)	(5		)	(5		)	(4		)
Dividends/distributions in excess of earnings	(5,896		)	(5,581		)	(5,286		)
Total equity	11,846			12,129			12,404
Total liabilities and equity	$	32,621		$	32,351		$	32,227


(a)	See "Recently Adopted Accounting Pronouncements" in note 3 for a discussion of the recently adopted new lease standard.

The following tables illustrate the Historical Adjustments, where applicable, on the Company’s condensed consolidated balance sheet for each period presented. Only line items impacted by the Historical Adjustments are presented, and as such, components will not sum to totals.



	September 30, 2019
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
ASSETS
Property and equipment, net	$	14,416		$	—		$	(23	)	$	14,393
Total assets	38,344			—			(23		)	38,321
LIABILITIES AND EQUITY
Current liabilities:
Deferred revenues	525			113			—			638
Total current liabilities	1,734			113			—			1,847
Other long-term liabilities^(a)	2,055			403			—			2,458
Total liabilities	27,019			516			—			27,535
CCIC stockholders' equity:
Dividends/distributions in excess of earnings	(6,503		)	(516		)	(23		)	(7,042		)
Total equity	11,325			(516		)	(23		)	10,786
Total liabilities and equity	$	38,344		$	—		$	(23	)	$	38,321



	June 30, 2019
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
ASSETS
Property and equipment, net	$	14,151		$	—		$	(23	)	$	14,128
Total assets	38,147			—			(23		)	38,124
LIABILITIES AND EQUITY
Current liabilities:
Deferred revenues	503			104			—			607
Total current liabilities	1,698			104			—			1,802
Other long-term liabilities^(a)	2,028			383			—			2,411
Total liabilities	26,624			487			—			27,111
CCIC stockholders' equity:
Dividends/distributions in excess of earnings	(6,277		)	(487		)	(23		)	(6,787		)
Total equity	11,523			(487		)	(23		)	11,013
Total liabilities and equity	$	38,147		$	—		$	(23	)	$	38,124


(a)	See "Recently Adopted Accounting Pronouncements" in note 3 for a discussion of the recently adopted new lease standard.



	March 31, 2019
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
ASSETS
Property and equipment, net	$	13,883		$	—		$	(23	)	$	13,860
Total assets	37,778			—			(23		)	37,755
LIABILITIES AND EQUITY
Current liabilities:
Deferred revenues	502			96			—			598
Total current liabilities	1,565			96			—			1,661
Other long-term liabilities^(a)	2,009			360			—			2,369
Total liabilities	26,032			456			—			26,488
CCIC stockholders' equity:
Dividends/distributions in excess of earnings	(6,022		)	(456		)	(23		)	(6,501		)
Total equity	11,746			(456		)	(23		)	11,267
Total liabilities and equity	$	37,778		$	—		$	(23	)	$	37,755



	September 30, 2018
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
ASSETS
Property and equipment, net	$	13,433		$	—		$	(23	)	$	13,410
Total assets	32,644			—			(23		)	32,621
LIABILITIES AND EQUITY
Current liabilities:
Deferred revenues	484			84			—			568
Total current liabilities	1,304			84			—			1,388
Other long-term liabilities^(a)	2,732			342			—			3,074
Total liabilities	20,349			426			—			20,775
CCIC stockholders' equity:
Dividends/distributions in excess of earnings	(5,447		)	(426		)	(23		)	(5,896		)
Total equity	12,295			(426		)	(23		)	11,846
Total liabilities and equity	$	32,644		$	—		$	(23	)	$	32,621


(a)	See "Recently Adopted Accounting Pronouncements" in note 3 for a discussion of the recently adopted new lease standard.



	June 30, 2018
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
ASSETS
Property and equipment, net	$	13,218		$	—		$	(23	)	$	13,195
Total assets	32,374			—			(23		)	32,351
LIABILITIES AND EQUITY
Current liabilities:
Deferred revenues	476			78			—			554
Total current liabilities	1,286			78			—			1,364
Other long-term liabilities^(a)	2,678			336			—			3,014
Total liabilities	19,808			414			—			20,222
CCIC stockholders' equity:
Dividends/distributions in excess of earnings	(5,144		)	(414		)	(23		)	(5,581		)
Total equity	12,566			(414		)	(23		)	12,129
Total liabilities and equity	$	32,374		$	—		$	(23	)	$	32,351



	March 31, 2018
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
ASSETS
Property and equipment, net	$	13,051		$	—		$	(23	)	$	13,028
Total assets	32,250			—			(23		)	32,227
LIABILITIES AND EQUITY
Current liabilities:
Deferred revenues	465			74			—			539
Total current liabilities	1,187			74			—			1,261
Other long-term liabilities^(a)	2,615			331			—			2,946
Total liabilities	19,418			405			—			19,823
CCIC stockholders' equity:
Dividends/distributions in excess of earnings	(4,858		)	(405		)	(23		)	(5,286		)
Total equity	12,832			(405		)	(23		)	12,404
Total liabilities and equity	$	32,250		$	—		$	(23	)	$	32,227


(a)	See "Recently Adopted Accounting Pronouncements" in note 3 for a discussion of the recently adopted new lease standard.

Condensed consolidated statement of operations and comprehensive income (loss)



	September 30, 2019						June 30, 2019						March 31, 2019
	Three Months Ended			Nine Months Ended			Three Months Ended			Six Months Ended			Three Months Ended
	(As Restated)
Net revenues:
Site rental	$	1,287		$	3,793		$	1,263		$	2,505		$	1,242
Services and other	195			544			184			350			166
Net revenues	1,482			4,337			1,447			2,855			1,408
Operating expenses:
Costs of operations^(a):
Site rental	369			1,095			365			726			361
Services and other	146			407			137			261			124
Selling, general and administrative	150			457			155			307			152
Asset write-down charges	2			13			6			12			6
Acquisition and integration costs	4			10			2			6			4
Depreciation, amortization and accretion	388			1,175			393			787			394
Total operating expenses	1,059			3,157			1,058			2,099			1,041
Operating income (loss)	423			1,180			389			756			367
Interest expense and amortization of deferred financing costs	(173		)	(510		)	(169		)	(337		)	(168		)
Gains (losses) on retirement of long-term obligations	—			(2		)	(1		)	(2		)	(1		)
Interest income	2			5			1			3			2
Other income (expense)	(5		)	(6		)	—			(1		)	(1		)
Income (loss) before income taxes	247			667			220			419			199
Benefit (provision) for income taxes	(5		)	(15		)	(4		)	(10		)	(6		)
Net income (loss) attributable to CCIC stockholders	242			652			216			409			193
Dividends/distributions on preferred stock	(28		)	(85		)	(28		)	(57		)	(28		)
Net income (loss) attributable to CCIC common stockholders	214			567			188			352			165
Net income (loss)	242			652			216			409			193
Other comprehensive income (loss):
Foreign currency translation adjustments	—			—			—			—			—
Total other comprehensive income (loss)	—			—			—			—			—
Comprehensive income (loss) attributable to CCIC stockholders	$	242		$	652		$	216		$	409		$	193
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	0.51		$	1.36		$	0.45		$	0.85		$	0.40
Net income (loss) attributable to CCIC common stockholders - diluted	$	0.51		$	1.36		$	0.45		$	0.84		$	0.40
Weighted-average common shares outstanding:
Basic	416			416			416			415			415
Diluted	418			418			418			417			417


(a)	Exclusive of depreciation, amortization and accretion shown separately.



	December 31, 2018			September 30, 2018						June 30, 2018						March 31, 2018
	Three Months Ended			Three Months Ended			Nine Months Ended			Three Months Ended			Six Months Ended			Three Months Ended
	(As Restated)
Net revenues:
Site rental	$	1,231		$	1,205		$	3,565		$	1,188		$	2,360		$	1,171
Services and other	175			156			399			131			244			113
Net revenues	1,406			1,361			3,964			1,319			2,604			1,284
Operating expenses:
Costs of operations^(a):
Site rental	353			355			1,057			355			702			347
Services and other	135			118			301			98			183			85
Selling, general and administrative	145			145			418			138			273			134
Asset write-down charges	8			8			18			6			9			3
Acquisition and integration costs	9			4			18			8			14			6
Depreciation, amortization and accretion	389			385			1,138			379			753			374
Total operating expenses	1,039			1,015			2,950			984			1,934			949
Operating income (loss)	367			346			1,014			335			670			335
Interest expense and amortization of deferred financing costs	(164		)	(160		)	(478		)	(158		)	(318		)	(160		)
Gains (losses) on retirement of long-term obligations	—			(32		)	(106		)	(3		)	(74		)	(71		)
Interest income	2			1			4			1			2			1
Other income (expense)	1			1			—			—			(1		)	(1		)
Income (loss) before income taxes	206			156			434			175			279			104
Benefit (provision) for income taxes	(5		)	(5		)	(13		)	(5		)	(9		)	(4		)
Net income (loss) attributable to CCIC stockholders	201			151			421			170			270			100
Dividends/distributions on preferred stock	(28		)	(28		)	(85		)	(28		)	(57		)	(28		)
Net income (loss) attributable to CCIC common stockholders	173			123			336			142			213			72
Net income (loss)	201			151			421			170			270			100
Other comprehensive income (loss):
Foreign currency translation adjustments	—			—			(1		)	(1		)	(1		)	—
Total other comprehensive income (loss)	—			—			(1		)	(1		)	(1		)	—
Comprehensive income (loss) attributable to CCIC stockholders	$	201		$	151		$	420		$	169		$	269		$	100
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	0.42		$	0.30		$	0.81		$	0.34		$	0.52		$	0.18
Net income (loss) attributable to CCIC common stockholders - diluted	$	0.42		$	0.30		$	0.81		$	0.34		$	0.52		$	0.18
Weighted-average common shares outstanding:
Basic	415			415			413			415			412			409
Diluted	417			416			414			416			413			410


(a)	Exclusive of depreciation, amortization and accretion shown separately.

The following tables illustrate the Historical Adjustments, where applicable, on the Company’s condensed consolidated statement of operations and comprehensive income (loss) for each period presented. Only line items impacted by the Historical Adjustments are presented, and as such, components will not sum to totals. The sum of quarterly information may not agree to year-to-date information due to rounding.



	Nine Months Ended September 30, 2019
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	3,718	$	75		$	—		$	3,793
Services and other	700		(152		)	(4		)	544
Net revenues	4,418		(77		)	(4		)	4,337
Operating expenses:
Costs of operations^(a):
Services and other	410		—			(3		)	407
Depreciation, amortization and accretion	1,176		—			(1		)	1,175
Total operating expenses	3,161		—			(4		)	3,157
Operating income (loss)	1,257		(77		)	—			1,180
Income (loss) before income taxes	744		(77		)	—			667
Net income (loss) attributable to CCIC stockholders	729		(77		)	—			652
Net income (loss) attributable to CCIC common stockholders	$	644	$	(77	)	$	—		$	567
Net income (loss)	$	729	$	(77	)	$	—		$	652
Comprehensive income (loss) attributable to CCIC stockholders	$	729	$	(77	)	$	—		$	652
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	1.55	$	(0.19	)	$	—		$	1.36
Net income (loss) attributable to CCIC common stockholders - diluted	$	1.54	$	(0.18	)	$	—		$	1.36


(a)	Exclusive of depreciation, amortization and accretion shown separately.



	Three Months Ended September 30, 2019
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	1,260	$	27		$	—		$	1,287
Services and other	254		(57		)	(2		)	195
Net revenues	1,514		(30		)	(2		)	1,482
Operating expenses:
Costs of operations^(a):
Services and other	147		—			(1		)	146
Depreciation, amortization and accretion	389		—			(1		)	388
Total operating expenses	1,061		—			(2		)	1,059
Operating income (loss)	453		(30		)	—			423
Income (loss) before income taxes	277		(30		)	—			247
Net income (loss) attributable to CCIC stockholders	272		(30		)	—			242
Net income (loss) attributable to CCIC common stockholders	$	244	$	(30	)	$	—		$	214
Net income (loss)	$	272	$	(30	)	$	—		$	242
Comprehensive income (loss) attributable to CCIC stockholders	$	272	$	(30	)	$	—		$	242
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	0.59	$	(0.08	)	$	—		$	0.51
Net income (loss) attributable to CCIC common stockholders - diluted	$	0.58	$	(0.07	)	$	—		$	0.51



	Six Months Ended June 30, 2019
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	2,457	$	48		$	—		$	2,505
Services and other	447		(95		)	(2		)	350
Net revenues	2,904		(47		)	(2		)	2,855
Operating expenses:
Costs of operations^(a):
Services and other	263		—			(2		)	261
Total operating expenses	2,101		—			(2		)	2,099
Operating income (loss)	803		(47		)	—			756
Income (loss) before income taxes	466		(47		)	—			419
Net income (loss) attributable to CCIC stockholders	456		(47		)	—			409
Net income (loss) attributable to CCIC common stockholders	$	399	$	(47	)	$	—		$	352
Net income (loss)	$	456	$	(47	)	$	—		$	409
Comprehensive income (loss) attributable to CCIC stockholders	$	456	$	(47	)	$	—		$	409
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	0.96	$	(0.11	)	$	—		$	0.85
Net income (loss) attributable to CCIC common stockholders - diluted	$	0.95	$	(0.11	)	$	—		$	0.84


(a)	Exclusive of depreciation, amortization and accretion shown separately.



	Three Months Ended June 30, 2019
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	1,238	$	25		$	—		$	1,263
Services and other	240		(55		)	(1		)	184
Net revenues	1,478		(30		)	(1		)	1,447
Operating expenses:
Costs of operations^(a):
Services and other	138		—			(1		)	137
Total operating expenses	1,059		—			(1		)	1,058
Operating income (loss)	419		(30		)	—			389
Income (loss) before income taxes	250		(30		)	—			220
Net income (loss) attributable to CCIC stockholders	246		(30		)	—			216
Net income (loss) attributable to CCIC common stockholders	$	218	$	(30	)	$	—		$	188
Net income (loss)	$	246	$	(30	)	$	—		$	216
Comprehensive income (loss) attributable to CCIC stockholders	$	246	$	(30	)	$	—		$	216
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	0.52	$	(0.07	)	$	—		$	0.45
Net income (loss) attributable to CCIC common stockholders - diluted	$	0.52	$	(0.07	)	$	—		$	0.45



	Three Months Ended March 31, 2019
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	1,219	$	23		$	—		$	1,242
Services and other	207		(40		)	(1		)	166
Net revenues	1,426		(17		)	(1		)	1,408
Operating expenses:
Costs of operations^(a):
Services and other	125		—			(1		)	124
Total operating expenses	1,042		—			(1		)	1,041
Operating income (loss)	384		(17		)	—			367
Income (loss) before income taxes	216		(17		)	—			199
Net income (loss) attributable to CCIC stockholders	210		(17		)	—			193
Net income (loss) attributable to CCIC common stockholders	$	182	$	(17	)	$	—		$	165
Net income (loss)	$	210	$	(17	)	$	—		$	193
Comprehensive income (loss) attributable to CCIC stockholders	$	210	$	(17	)	$	—		$	193
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	0.44	$	(0.04	)	$	—		$	0.40
Net income (loss) attributable to CCIC common stockholders - diluted	$	0.44	$	(0.04	)	$	—		$	0.40


(a)	Exclusive of depreciation, amortization and accretion shown separately.



	Three Months Ended December 31, 2018
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	1,209	$	22		$	—		$	1,231
Services and other	210		(35		)	—			175
Net revenues	1,419		(13		)	—			1,406
Operating expenses:
Depreciation, amortization and accretion	390		—			(1		)	389
Total operating expenses	1,040		—			(1		)	1,039
Operating income (loss)	379		(13		)	1			367
Income (loss) before income taxes	218		(13		)	1			206
Net income (loss) attributable to CCIC stockholders	213		(13		)	1			201
Net income (loss) attributable to CCIC common stockholders	$	185	$	(13	)	$	1		$	173
Net income (loss)	$	213	$	(13	)	$	1		$	201
Comprehensive income (loss) attributable to CCIC stockholders	$	213	$	(13	)	$	1		$	201
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	0.45	$	(0.03	)	$	—		$	0.42
Net income (loss) attributable to CCIC common stockholders - diluted	$	0.44	$	(0.02	)	$	—		$	0.42



	Nine Months Ended September 30, 2018
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	3,507	$	58		$	—		$	3,565
Services and other	497		(93		)	(5		)	399
Net revenues	4,004		(35		)	(5		)	3,964
Operating expenses:
Costs of operations^(a):
Services and other	304		—			(3		)	301
Total operating expenses	2,953		—			(3		)	2,950
Operating income (loss)	1,051		(35		)	(2		)	1,014
Income (loss) before income taxes	471		(35		)	(2		)	434
Net income (loss) attributable to CCIC stockholders	458		(35		)	(2		)	421
Net income (loss) attributable to CCIC common stockholders	$	373	$	(35	)	$	(2	)	$	336
Net income (loss)	$	458	$	(35	)	$	(2	)	$	421
Comprehensive income (loss) attributable to CCIC stockholders	$	457	$	(35	)	$	(2	)	$	420
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	0.90	$	(0.09	)	$	—		$	0.81
Net income (loss) attributable to CCIC common stockholders - diluted	$	0.90	$	(0.09	)	$	—		$	0.81


(a)	Exclusive of depreciation, amortization and accretion shown separately.



	Three Months Ended September 30, 2018
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	1,184	$	21		$	—		$	1,205
Services and other	191		(33		)	(2		)	156
Net revenues	1,375		(12		)	(2		)	1,361
Operating expenses:
Costs of operations^(a):
Services and other	119		—			(1		)	118
Total operating expenses	1,016		—			(1		)	1,015
Operating income (loss)	359		(12		)	(1		)	346
Income (loss) before income taxes	169		(12		)	(1		)	156
Net income (loss) attributable to CCIC stockholders	164		(12		)	(1		)	151
Net income (loss) attributable to CCIC common stockholders	$	136	$	(12	)	$	(1	)	$	123
Net income (loss)	$	164	$	(12	)	$	(1	)	$	151
Comprehensive income (loss) attributable to CCIC stockholders	$	164	$	(12	)	$	(1	)	$	151
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	0.33	$	(0.03	)	$	—		$	0.30
Net income (loss) attributable to CCIC common stockholders - diluted	$	0.33	$	(0.03	)	$	—		$	0.30



	Six Months Ended June 30, 2018
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	2,323	$	37		$	—		$	2,360
Services and other	307		(60		)	(3		)	244
Net revenues	2,630		(23		)	(3		)	2,604
Operating expenses:
Costs of operations^(a):
Services and other	185		—			(2		)	183
Total operating expenses	1,936		—			(2		)	1,934
Operating income (loss)	694		(23		)	(1		)	670
Income (loss) before income taxes	303		(23		)	(1		)	279
Net income (loss) attributable to CCIC stockholders	294		(23		)	(1		)	270
Net income (loss) attributable to CCIC common stockholders	$	237	$	(23	)	$	(1	)	$	213
Net income (loss)	$	294	$	(23	)	$	(1	)	$	270
Comprehensive income (loss) attributable to CCIC stockholders	$	293	$	(23	)	$	(1	)	$	269
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	0.58	$	(0.06	)	$	—		$	0.52
Net income (loss) attributable to CCIC common stockholders - diluted	$	0.57	$	(0.05	)	$	—		$	0.52


(a)	Exclusive of depreciation, amortization and accretion shown separately.



	Three Months Ended June 30, 2018
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	1,169	$	19		$	—		$	1,188
Services and other	161		(28		)	(2		)	131
Net revenues	1,330		(9		)	(2		)	1,319
Operating expenses:
Costs of operations^(a):
Services and other	99		—			(1		)	98
Total operating expenses	985		—			(1		)	984
Operating income (loss)	345		(9		)	(1		)	335
Income (loss) before income taxes	185		(9		)	(1		)	175
Net income (loss) attributable to CCIC stockholders	180		(9		)	(1		)	170
Net income (loss) attributable to CCIC common stockholders	$	152	$	(9	)	$	(1	)	$	142
Net income (loss)	$	180	$	(9	)	$	(1	)	$	170
Comprehensive income (loss) attributable to CCIC stockholders	$	179	$	(9	)	$	(1	)	$	169
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	0.37	$	(0.03	)	$	—		$	0.34
Net income (loss) attributable to CCIC common stockholders - diluted	$	0.36	$	(0.02	)	$	—		$	0.34



	Three Months Ended March 31, 2018
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	1,153	$	18		$	—		$	1,171
Services and other	146		(32		)	(1		)	113
Net revenues	1,299		(14		)	(1		)	1,284
Operating expenses:
Costs of operations^(a):
Services and other	86		—			(1		)	85
Total operating expenses	950		—			(1		)	949
Operating income (loss)	349		(14		)	—			335
Income (loss) before income taxes	118		(14		)	—			104
Net income (loss) attributable to CCIC stockholders	114		(14		)	—			100
Net income (loss) attributable to CCIC common stockholders	$	86	$	(14	)	$	—		$	72
Net income (loss)	$	114	$	(14	)	$	—		$	100
Comprehensive income (loss) attributable to CCIC stockholders	$	114	$	(14	)	$	—		$	100
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	0.21	$	(0.03	)	$	—		$	0.18
Net income (loss) attributable to CCIC common stockholders - diluted	$	0.21	$	(0.03	)	$	—		$	0.18


(a)	Exclusive of depreciation, amortization and accretion shown separately.

Consolidated Statement of Cash Flows



	September 30, 2019			June 30, 2019			March 31, 2019
	Nine Months Ended			Six Months Ended			Three Months Ended
	(As Restated)
Cash flows from operating activities:
Net income (loss)	$	652		$	409		$	193
Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:
Depreciation, amortization and accretion	1,175			787			394
(Gains) losses on retirement of long-term obligations	2			2			1
Amortization of deferred financing costs and other non-cash interest	1			1			1
Stock-based compensation expense	91			62			29
Asset write-down charges	13			12			6
Deferred income tax (benefit) provision	2			1			1
Other non-cash adjustments, net	4			3			2
Changes in assets and liabilities, excluding the effects of acquisitions:
Increase (decrease) in accrued interest	(38		)	18			(41		)
Increase (decrease) in accounts payable	37			6			(5		)
Increase (decrease) in other liabilities	179			77			(7		)
Decrease (increase) in receivables	(166		)	(89		)	(43		)
Decrease (increase) in other assets	(62		)	(62		)	(19		)
Net cash provided by (used for) operating activities	1,890			1,227			512
Cash flows from investing activities:
Capital expenditures	(1,537		)	(998		)	(480		)
Payments for acquisitions, net of cash acquired	(15		)	(13		)	(10		)
Other investing activities, net	3			1			1
Net cash provided by (used for) investing activities	(1,549		)	(1,010		)	(489		)
Cash flows from financing activities:
Proceeds from issuance of long-term debt	1,895			995			996
Principal payments on debt and other long-term obligations	(59		)	(36		)	(25		)
Purchases and redemptions of long-term debt	(12		)	(12		)	(12		)
Borrowings under revolving credit facility	1,585			1,195			710
Payments under revolving credit facility	(2,270		)	(1,785		)	(1,140		)
Net issuances (repayments) under commercial paper program	—			500			—
Payments for financing costs	(24		)	(14		)	(10		)
Purchases of common stock	(44		)	(43		)	(42		)
Dividends/distributions paid on common stock	(1,415		)	(944		)	(477		)
Dividends/distributions paid on preferred stock	(85		)	(57		)	(28		)
Net cash provided by (used for) financing activities	(429		)	(201		)	(28		)
Net increase (decrease) in cash, cash equivalents, and restricted cash	(88		)	16			(5		)
Effect of exchange rate changes on cash	—			—			—
Cash, cash equivalents, and restricted cash at beginning of period	413			413			413
Cash, cash equivalents, and restricted cash at end of period	325			429			408



	September 30, 2018			June 30, 2018			March 31, 2018
	Nine Months Ended			Six Months Ended			Three Months Ended
	(As Restated)
Cash flows from operating activities:
Net income (loss)	$	421		$	270		$	100
Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:
Depreciation, amortization and accretion	1,138			753			374
(Gains) losses on retirement of long-term obligations	106			74			71
Amortization of deferred financing costs and other non-cash interest	5			4			2
Stock-based compensation expense	79			47			23
Asset write-down charges	18			9			3
Deferred income tax (benefit) provision	2			1			1
Other non-cash adjustments, net	2			1			2
Changes in assets and liabilities, excluding the effects of acquisitions:
Increase (decrease) in accrued interest	(31		)	22			(28		)
Increase (decrease) in accounts payable	31			3			(5		)
Increase (decrease) in other liabilities	179			76			(43		)
Decrease (increase) in receivables	(74		)	(59		)	(5		)
Decrease (increase) in other assets	(103		)	(91		)	(43		)
Net cash provided by (used for) operating activities	1,773			1,110			452
Cash flows from investing activities:
Capital expenditures	(1,239		)	(762		)	(370		)
Payments for acquisitions, net of cash acquired	(26		)	(18		)	(14		)
Other investing activities, net	(14		)	3			—
Net cash provided by (used for) investing activities	(1,279		)	(777		)	(384		)
Cash flows from financing activities:
Proceeds from issuance of long-term debt	2,743			1,743			1,743
Principal payments on debt and other long-term obligations	(76		)	(47		)	(32		)
Purchases and redemptions of long-term debt	(2,346		)	(1,318		)	(1,318		)
Borrowings under revolving credit facility	1,290			485			170
Payments under revolving credit facility	(1,465		)	(1,150		)	(1,050		)
Payments for financing costs	(33		)	(20		)	(15		)
Net proceeds from issuance of common stock	841			841			843
Purchases of common stock	(34		)	(34		)	(33		)
Dividends/distributions paid on common stock	(1,315		)	(879		)	(443		)
Dividends/distributions paid on preferred stock	(85		)	(57		)	(28		)
Net cash provided by (used for) financing activities	(480		)	(436		)	(163		)
Net increase (decrease) in cash, cash equivalents, and restricted cash	14			(103		)	(95		)
Effect of exchange rate changes on cash	(1		)	(1		)	—
Cash, cash equivalents, and restricted cash at beginning of period	440			440			440
Cash, cash equivalents, and restricted cash at end of period	453			336			345

The following tables illustrate the Historical Adjustments, where applicable, on the Company’s condensed consolidated statement of cash flows for each period. Only line items impacted by the Historical Adjustments are presented, and as such, components will not sum to totals.



	Nine Months Ended September 30, 2019
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
Cash flows from operating activities:
Net income (loss)	$	729		$	(77	)	$	—		$	652
Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:
Depreciation, amortization and accretion	1,176			—			(1		)	1,175
Increase (decrease) in other liabilities	102			77			—			179
Net cash provided by (used for) operating activities	1,891			—			(1		)	1,890
Cash flows from investing activities:
Capital expenditures	(1,538		)	—			1			(1,537		)
Net cash provided by (used for) investing activities	(1,550		)	—			1			(1,549		)
Net increase (decrease) in cash, cash equivalents, and restricted cash	(88		)	—			—			(88		)
Cash, cash equivalents, and restricted cash at beginning of period	413			—			—			413
Cash, cash equivalents, and restricted cash at end of period	$	325		$	—		$	—		$	325



	Six Months Ended June 30, 2019
	As Reported		Restatement Adjustments			Other Adjustments		As Restated
Cash flows from operating activities:
Net income (loss)	$	456	$	(47	)	$	—	$	409
Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:
Increase (decrease) in other liabilities	30		47			—		77
Net cash provided by (used for) operating activities	1,227		—			—		1,227
Net increase (decrease) in cash, cash equivalents, and restricted cash	16		—			—		16
Cash, cash equivalents, and restricted cash at beginning of period	413		—			—		413
Cash, cash equivalents, and restricted cash at end of period	$	429	$	—		$	—	$	429



	Three Months Ended March 31, 2019
	As Reported			Restatement Adjustments			Other Adjustments		As Restated
Cash flows from operating activities:
Net income (loss)	$	210		$	(17	)	$	—	$	193
Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:
Increase (decrease) in other liabilities	(24		)	17			—		(7		)
Net cash provided by (used for) operating activities	512			—			—		512
Net increase (decrease) in cash, cash equivalents, and restricted cash	(5		)	—			—		(5		)
Cash, cash equivalents, and restricted cash at beginning of period	413			—			—		413
Cash, cash equivalents, and restricted cash at end of period	$	408		$	—		$	—	$	408



	Nine Months Ended September 30, 2018
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
Cash flows from operating activities:
Net income (loss)	$	458		$	(35	)	$	(2	)	$	421
Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:
Increase (decrease) in other liabilities	144			35			—			179
Net cash provided by (used for) operating activities	1,775			—			(2		)	1,773
Cash flows from investing activities:
Capital expenditures	(1,241		)	—			2			(1,239		)
Net cash provided by (used for) investing activities	(1,281		)	—			2			(1,279		)
Net increase (decrease) in cash, cash equivalents, and restricted cash	14			—			—			14
Cash, cash equivalents, and restricted cash at beginning of period	440			—			—			440
Cash, cash equivalents, and restricted cash at end of period	$	453		$	—		$	—		$	453



	Six Months Ended June 30, 2018
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
Cash flows from operating activities:
Net income (loss)	$	294		$	(23	)	$	(1	)	$	270
Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:
Increase (decrease) in other liabilities	53			23			—			76
Net cash provided by (used for) operating activities	1,111			—			(1		)	1,110
Cash flows from investing activities:
Capital expenditures	(763		)	—			1			(762		)
Net cash provided by (used for) investing activities	(778		)	—			1			(777		)
Net increase (decrease) in cash, cash equivalents, and restricted cash	(103		)	—			—			(103		)
Cash, cash equivalents, and restricted cash at beginning of period	440			—			—			440
Cash, cash equivalents, and restricted cash at end of period	$	336		$	—		$	—		$	336



	Three Months Ended March 31, 2018
	As Reported			Restatement Adjustments			Other Adjustments		As Restated
Cash flows from operating activities:
Net income (loss)	$	114		$	(14	)	$	—	$	100
Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:
Increase (decrease) in other liabilities	(57		)	14			—		(43		)
Net cash provided by (used for) operating activities	452			—			—		452
Net increase (decrease) in cash, cash equivalents, and restricted cash	(95		)	—			—		(95		)
Cash, cash equivalents, and restricted cash at beginning of period	440			—			—		440
Cash, cash equivalents, and restricted cash at end of period	$	345		$	—		$	—	$	345

Subsequent Events	12 Months Ended
Subsequent Events	Dec. 31, 2019
Subsequent Events [Abstract]
Subsequent Events [Text Block]	19. Subsequent Events Common Stock Dividend On February 20, 2020, the Company's board of directors declared a quarterly cash dividend of $1.20 per common share. The quarterly dividend will be payable on March 31, 2020, to common stockholders of record as of March 13, 2020.

Schedule II - Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2019

Schedule II Valuation and Qualifying Accounts

Schedule II - Valuation and Qualifying Accounts Disclosure [Text Block]



			Additions		Deductions
	Balance at Beginning of Year		Charged to Operations		Credited to Operations		Written Off			Effect of Exchange Rate Changes		Other Adjustments			Balance at End of Year
Allowance for Doubtful Accounts Receivable:
2019	$	14	$	7	$	—	$	(3	)	$	—	$	—		$	18
2018	$	14	$	4	$	—	$	(4	)	$	—	$	—		$	14
2017	$	11	$	4	$	—	$	(5	)	$	—	$	4	^(a)	$	14


(a)	Represents the allowance for doubtful accounts reflected in the final purchase price allocations for the 2017 Acquisitions. See note 4.



			Additions				Deductions
	Balance at Beginning of Year		Charged to Operations		Charged to Additional Paid-in Capital and Other Comprehensive Income		Credited to Operations			Credited to Additional Paid-in Capital and Other Comprehensive Income		Other Adjustments^(a)		Balance at End of Year
Deferred Tax Valuation Allowance:
2019	$	1	$	—	$	—	$	(1	)	$	—	$	—	$	—
2018	$	1	$	—	$	—	$	—		$	—	$	—	$	1
2017	$	7	$	—	$	—	$	(6	)	$	—	$	—	$	1

(a)

Inclusive of the effects of acquisitions.

Schedule III - Schedule of Real Estate and Depreciation (Notes)

12 Months Ended

Dec. 31, 2019

SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]

SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation Disclosure [Text Block]

Description

Encumbrances

Initial Cost to Company

Cost Capitalized Subsequent to Acquisition

Gross Amount Carried at Close of Current Period

Accumulated Depreciation at Close of Current Period

Date of Construction

Date Acquired

Life on Which Depreciation in Latest Income Statement is Computed

Communications infrastructure^(a)

3,293

^(b)

^(c)

23,854

(9,382

)

Various

Up to 20 years


(a)	Includes approximately 40,000 towers and 80,000 route miles of fiber. No single asset exceeds 5% of the aggregate gross amounts at which the assets were carried at the close of the period set forth in the table above.

(b)

Encumbrances are reported at face value, without contemplating the effect of deferred financing costs, discounts or premiums. Certain of the Company's debt is secured by (1) a security interest in substantially all of the applicable issuers' assignable personal property, (2) a pledge of the equity interests in each applicable issuer and (3) a security interest in the applicable issuers' leases with tenants to lease tower space (space licenses).


(c)	The Company has omitted this information, as it would be impracticable to compile such information on an asset-by-asset basis.



	2019			2018
				(As Restated)^(a)
Gross amount at beginning	$	21,840		$	20,086
Additions during period:
Acquisitions through foreclosure	—			—
Other acquisitions^(b)	4			5
Communications infrastructure construction and improvements	1,878			1,565
Purchase of land interests	53			56
Sustaining capital expenditures	84			85
Other^(c)	101			64
Total additions	2,120			1,775
Deductions during period:
Cost of real estate sold or disposed	(45		)	(21		)
Other	(61		)	—
Total deductions	(106		)	(21		)
Balance at end	$	23,854		$	21,840


(a)	See note 2 to the Company's consolidated financial statements for further information regarding the restatement.


(b)	Includes acquisitions of communications infrastructure.


(c)	Predominately relates to the purchase of property and equipment under finance leases and installment land purchases.



	2019			2018
				(As Restated)^(a)
Gross amount of accumulated depreciation at beginning	$	(8,338	)	$	(7,301	)
Additions during period:
Depreciation	(1,087		)	(1,056		)
Total additions	(1,087		)	(1,056		)
Deductions during period:
Amount for assets sold or disposed	24			18
Other	19			1
Total deductions	43			19
Balance at end	$	(9,382	)	$	(8,338	)

(a)

See note 2 to the Company's consolidated financial statements for further information regarding the restatement.

Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2019

Accounting Policies [Abstract]

Restricted Cash

Receivables Allowance

General, Leases [Policy Text Block]

Lease Accounting

Effective January 1, 2019, the Company adopted new guidance on the recognition, measurement, presentation and disclosure of leases (commonly referred to as "ASC 842" or the "new lease standard").

Lessee, Leases [Policy Text Block]

Lessor, Leases Policy

Property and Equipment

Asset Retirement Obligations

Acquisition and Integration Costs

Intangible Assets

See "Recently Adopted Accounting Pronouncements" for additional information regarding the adoption of the new lease standard.

Deferred Credits

See "Recently Adopted Accounting Pronouncements" for additional information regarding the adoption of the new lease standard.

Deferred Financing Costs

Revenue Recognition

See note 5 for further discussion regarding the Company’s revenues.

Cost of Operations

Costs of Operations

Services and other costs of operations predominately consist of third-party service providers such as contractors and professional services firms and, to a lesser extent, internal labor costs.

Stock-Based Compensation

Expected Volatility. The Company estimates the volatility of its common stock at the date of grant based on the historical volatility of its common stock.

Expected Dividend Rate. The expected dividend rate at the date of grant is based on the then-current dividend yield.

Risk-Free Rate. The Company bases the risk-free rate on the implied yield currently available on U.S. Treasury issues with an equivalent remaining term equal to the expected life of the award.

Interest Expense and Amortization of Deferred Financing Costs

The components of interest expense and amortization of deferred financing costs are as follows:



	Years Ended December 31,
	2019			2018			2017
Interest expense on debt obligations	$	682		$	635		$	582
Amortization of deferred financing costs and adjustments on long-term debt, net	21			21			19
Capitalized interest	(20		)	(15		)	(12		)
Other	—			1			2
Total	$	683		$	642		$	591

Income Taxes

See note 11.

Per Share Information



	Years Ended December 31,
	2019			2018			2017
				(As Restated)
Net income (loss) attributable to CCIC stockholders	$	860		$	622		$	366
Dividends/distributions on preferred stock	(113		)	(113		)	(58		)
Net income (loss) attributable to CCIC common stockholders for basic and diluted computations	$	747		$	509		$	308

Weighted-average number of common shares outstanding (in millions):
Basic weighted-average number of common stock outstanding	416			413			382
Effect of assumed dilution from potential issuance of common shares relating to RSUs	2			2			1
Diluted weighted-average number of common shares outstanding	418			415			383

Net income (loss) attributable to CCIC common stockholders, per common share:
Basic	$	1.80		$	1.23		$	0.80
Diluted	$	1.79		$	1.23		$	0.80

Dividends/distributions declared per share of common stock	$	4.58		$	4.28		$	3.90

Fair Values

Recent Accounting Pronouncements

Recently Adopted Accounting Pronouncements

Lease Accounting

See "Lease Accounting" for further discussion of the Company's updated accounting policies for leases.

Recent Accounting Pronouncements Not Yet Adopted

No new accounting pronouncements issued but not yet adopted are expected to have a material impact on the Company's consolidated financial statements.

Restatement of Previously Issued Consolidated Financial Statements (Tables)

3 Months Ended

6 Months Ended

9 Months Ended

12 Months Ended

Sep. 30, 2019

Jun. 30, 2019

Mar. 31, 2019

Dec. 31, 2018

Sep. 30, 2018

Jun. 30, 2018

Mar. 31, 2018

Jun. 30, 2019

Jun. 30, 2018

Sep. 30, 2019

Sep. 30, 2018

Dec. 31, 2019

Dec. 31, 2018

Dec. 31, 2017

Condensed Balance Sheet [Table Text Block]



	March 31, 2019
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
ASSETS
Property and equipment, net	$	13,883		$	—		$	(23	)	$	13,860
Total assets	37,778			—			(23		)	37,755
LIABILITIES AND EQUITY
Current liabilities:
Deferred revenues	502			96			—			598
Total current liabilities	1,565			96			—			1,661
Other long-term liabilities^(a)	2,009			360			—			2,369
Total liabilities	26,032			456			—			26,488
CCIC stockholders' equity:
Dividends/distributions in excess of earnings	(6,022		)	(456		)	(23		)	(6,501		)
Total equity	11,746			(456		)	(23		)	11,267
Total liabilities and equity	$	37,778		$	—		$	(23	)	$	37,755



	September 30, 2018
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
ASSETS
Property and equipment, net	$	13,433		$	—		$	(23	)	$	13,410
Total assets	32,644			—			(23		)	32,621
LIABILITIES AND EQUITY
Current liabilities:
Deferred revenues	484			84			—			568
Total current liabilities	1,304			84			—			1,388
Other long-term liabilities^(a)	2,732			342			—			3,074
Total liabilities	20,349			426			—			20,775
CCIC stockholders' equity:
Dividends/distributions in excess of earnings	(5,447		)	(426		)	(23		)	(5,896		)
Total equity	12,295			(426		)	(23		)	11,846
Total liabilities and equity	$	32,644		$	—		$	(23	)	$	32,621



	March 31, 2018
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
ASSETS
Property and equipment, net	$	13,051		$	—		$	(23	)	$	13,028
Total assets	32,250			—			(23		)	32,227
LIABILITIES AND EQUITY
Current liabilities:
Deferred revenues	465			74			—			539
Total current liabilities	1,187			74			—			1,261
Other long-term liabilities^(a)	2,615			331			—			2,946
Total liabilities	19,418			405			—			19,823
CCIC stockholders' equity:
Dividends/distributions in excess of earnings	(4,858		)	(405		)	(23		)	(5,286		)
Total equity	12,832			(405		)	(23		)	12,404
Total liabilities and equity	$	32,250		$	—		$	(23	)	$	32,227


(a)	See "Recently Adopted Accounting Pronouncements" in note 3 for a discussion of the recently adopted new lease standard.



	June 30, 2019
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
ASSETS
Property and equipment, net	$	14,151		$	—		$	(23	)	$	14,128
Total assets	38,147			—			(23		)	38,124
LIABILITIES AND EQUITY
Current liabilities:
Deferred revenues	503			104			—			607
Total current liabilities	1,698			104			—			1,802
Other long-term liabilities^(a)	2,028			383			—			2,411
Total liabilities	26,624			487			—			27,111
CCIC stockholders' equity:
Dividends/distributions in excess of earnings	(6,277		)	(487		)	(23		)	(6,787		)
Total equity	11,523			(487		)	(23		)	11,013
Total liabilities and equity	$	38,147		$	—		$	(23	)	$	38,124


(a)	See "Recently Adopted Accounting Pronouncements" in note 3 for a discussion of the recently adopted new lease standard.



	June 30, 2018
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
ASSETS
Property and equipment, net	$	13,218		$	—		$	(23	)	$	13,195
Total assets	32,374			—			(23		)	32,351
LIABILITIES AND EQUITY
Current liabilities:
Deferred revenues	476			78			—			554
Total current liabilities	1,286			78			—			1,364
Other long-term liabilities^(a)	2,678			336			—			3,014
Total liabilities	19,808			414			—			20,222
CCIC stockholders' equity:
Dividends/distributions in excess of earnings	(5,144		)	(414		)	(23		)	(5,581		)
Total equity	12,566			(414		)	(23		)	12,129
Total liabilities and equity	$	32,374		$	—		$	(23	)	$	32,351



	March 31, 2018
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
ASSETS
Property and equipment, net	$	13,051		$	—		$	(23	)	$	13,028
Total assets	32,250			—			(23		)	32,227
LIABILITIES AND EQUITY
Current liabilities:
Deferred revenues	465			74			—			539
Total current liabilities	1,187			74			—			1,261
Other long-term liabilities^(a)	2,615			331			—			2,946
Total liabilities	19,418			405			—			19,823
CCIC stockholders' equity:
Dividends/distributions in excess of earnings	(4,858		)	(405		)	(23		)	(5,286		)
Total equity	12,832			(405		)	(23		)	12,404
Total liabilities and equity	$	32,250		$	—		$	(23	)	$	32,227



	September 30, 2019
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
ASSETS
Property and equipment, net	$	14,416		$	—		$	(23	)	$	14,393
Total assets	38,344			—			(23		)	38,321
LIABILITIES AND EQUITY
Current liabilities:
Deferred revenues	525			113			—			638
Total current liabilities	1,734			113			—			1,847
Other long-term liabilities^(a)	2,055			403			—			2,458
Total liabilities	27,019			516			—			27,535
CCIC stockholders' equity:
Dividends/distributions in excess of earnings	(6,503		)	(516		)	(23		)	(7,042		)
Total equity	11,325			(516		)	(23		)	10,786
Total liabilities and equity	$	38,344		$	—		$	(23	)	$	38,321



	June 30, 2019
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
ASSETS
Property and equipment, net	$	14,151		$	—		$	(23	)	$	14,128
Total assets	38,147			—			(23		)	38,124
LIABILITIES AND EQUITY
Current liabilities:
Deferred revenues	503			104			—			607
Total current liabilities	1,698			104			—			1,802
Other long-term liabilities^(a)	2,028			383			—			2,411
Total liabilities	26,624			487			—			27,111
CCIC stockholders' equity:
Dividends/distributions in excess of earnings	(6,277		)	(487		)	(23		)	(6,787		)
Total equity	11,523			(487		)	(23		)	11,013
Total liabilities and equity	$	38,147		$	—		$	(23	)	$	38,124



	September 30, 2018
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
ASSETS
Property and equipment, net	$	13,433		$	—		$	(23	)	$	13,410
Total assets	32,644			—			(23		)	32,621
LIABILITIES AND EQUITY
Current liabilities:
Deferred revenues	484			84			—			568
Total current liabilities	1,304			84			—			1,388
Other long-term liabilities^(a)	2,732			342			—			3,074
Total liabilities	20,349			426			—			20,775
CCIC stockholders' equity:
Dividends/distributions in excess of earnings	(5,447		)	(426		)	(23		)	(5,896		)
Total equity	12,295			(426		)	(23		)	11,846
Total liabilities and equity	$	32,644		$	—		$	(23	)	$	32,621



	September 30, 2019			June 30, 2019			March 31, 2019
	(As Restated)
ASSETS
Current assets:
Cash and cash equivalents	$	182		$	288		$	245
Restricted cash	138			136			158
Receivables, net	667			591			545
Prepaid expenses^(a)	99			111			85
Other current assets	167			168			160
Total current assets	1,253			1,294			1,193
Deferred site rental receivables	1,413			1,391			1,373
Property and equipment, net	14,393			14,128			13,860
Operating lease right-of-use assets^(a)	6,112			6,053			5,969
Goodwill	10,078			10,078			10,078
Other intangible assets, net^(a)	4,968			5,074			5,178
Long-term prepaid rent and other assets, net^(a)	104			106			104
Total assets	$	38,321		$	38,124		$	37,755
LIABILITIES AND EQUITY
Current liabilities:
Accounts payable	$	368		$	337		$	311
Accrued interest	110			166			107
Deferred revenues	638			607			598
Other accrued liabilities^(a)	335			305			262
Current maturities of debt and other obligations	100			98			96
Current portion of operating lease liabilities^(a)	296			289			287
Total current liabilities	1,847			1,802			1,661
Debt and other long-term obligations	17,750			17,471			17,120
Operating lease liabilities^(a)	5,480			5,427			5,338
Other long-term liabilities^(a)	2,458			2,411			2,369
Total liabilities	27,535			27,111			26,488
Commitments and contingencies (see note 14)
CCIC stockholders' equity:
Common stock, $0.01 par value	4			4			4
6.875% Mandatory Convertible Preferred Stock, Series A, $0.01 par value	—			—			—
Additional paid-in capital	17,829			17,801			17,769
Accumulated other comprehensive income (loss)	(5		)	(5		)	(5		)
Dividends/distributions in excess of earnings	(7,042		)	(6,787		)	(6,501		)
Total equity	10,786			11,013			11,267
Total liabilities and equity	$	38,321		$	38,124		$	37,755


(a)	See "Recently Adopted Accounting Pronouncements" in note 3 for a discussion of the recently adopted new lease standard.

Consolidated Balance Sheet



	December 31, 2018
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
ASSETS
Property and equipment, net	$	13,676		$	—		$	(23	)	$	13,653
Total assets	32,785			—			(23		)	32,762
LIABILITIES AND EQUITY
Current liabilities:
Deferred revenues	498			89			—			587
Total current liabilities	1,417			89			—			1,506
Other long-term liabilities^(a)	2,759			351			—			3,110
Total liabilities	20,751			440			—			21,191
CCIC stockholders' equity:
Dividends/distributions in excess of earnings	(5,732		)	(440		)	(23		)	(6,195		)
Total equity	12,034			(440		)	(23		)	11,571
Total liabilities and equity	$	32,785		$	—		$	(23	)	$	32,762


(a)	See "Recently Adopted Accounting Pronouncements" in note 3 for a discussion of the recently adopted new lease standard.



	September 30, 2018			June 30, 2018			March 31, 2018
	(As Restated)
ASSETS
Current assets:
Cash and cash equivalents	$	323		$	206		$	220
Restricted cash	125			125			120
Receivables, net	471			455			402
Prepaid expenses^(a)	182			197			175
Other current assets	148			181			157
Total current assets	1,249			1,164			1,074
Deferred site rental receivables	1,357			1,303			1,304
Property and equipment, net	13,410			13,195			13,028
Goodwill	10,074			10,075			10,075
Other intangible assets, net^(a)	5,620			5,729			5,854
Long-term prepaid rent and other assets, net^(a)	911			885			892
Total assets	$	32,621		$	32,351		$	32,227
LIABILITIES AND EQUITY
Current liabilities:
Accounts payable	$	302		$	272		$	248
Accrued interest	101			154			104
Deferred revenues	568			554			539
Other accrued liabilities^(a)	306			272			240
Current maturities of debt and other obligations	111			112			130
Total current liabilities	1,388			1,364			1,261
Debt and other long-term obligations	16,313			15,844			15,616
Other long-term liabilities^(a)	3,074			3,014			2,946
Total liabilities	20,775			20,222			19,823
Commitments and contingencies (see note 14)
CCIC stockholders' equity:
Common stock, $0.01 par value	4			4			4
6.875% Mandatory Convertible Preferred Stock, Series A, $0.01 par value	—			—			—
Additional paid-in capital	17,743			17,711			17,690
Accumulated other comprehensive income (loss)	(5		)	(5		)	(4		)
Dividends/distributions in excess of earnings	(5,896		)	(5,581		)	(5,286		)
Total equity	11,846			12,129			12,404
Total liabilities and equity	$	32,621		$	32,351		$	32,227


(a)	See "Recently Adopted Accounting Pronouncements" in note 3 for a discussion of the recently adopted new lease standard.

Condensed Income Statement [Table Text Block]



	Three Months Ended September 30, 2019
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	1,260	$	27		$	—		$	1,287
Services and other	254		(57		)	(2		)	195
Net revenues	1,514		(30		)	(2		)	1,482
Operating expenses:
Costs of operations^(a):
Services and other	147		—			(1		)	146
Depreciation, amortization and accretion	389		—			(1		)	388
Total operating expenses	1,061		—			(2		)	1,059
Operating income (loss)	453		(30		)	—			423
Income (loss) before income taxes	277		(30		)	—			247
Net income (loss) attributable to CCIC stockholders	272		(30		)	—			242
Net income (loss) attributable to CCIC common stockholders	$	244	$	(30	)	$	—		$	214
Net income (loss)	$	272	$	(30	)	$	—		$	242
Comprehensive income (loss) attributable to CCIC stockholders	$	272	$	(30	)	$	—		$	242
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	0.59	$	(0.08	)	$	—		$	0.51
Net income (loss) attributable to CCIC common stockholders - diluted	$	0.58	$	(0.07	)	$	—		$	0.51



	Six Months Ended June 30, 2019
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	2,457	$	48		$	—		$	2,505
Services and other	447		(95		)	(2		)	350
Net revenues	2,904		(47		)	(2		)	2,855
Operating expenses:
Costs of operations^(a):
Services and other	263		—			(2		)	261
Total operating expenses	2,101		—			(2		)	2,099
Operating income (loss)	803		(47		)	—			756
Income (loss) before income taxes	466		(47		)	—			419
Net income (loss) attributable to CCIC stockholders	456		(47		)	—			409
Net income (loss) attributable to CCIC common stockholders	$	399	$	(47	)	$	—		$	352
Net income (loss)	$	456	$	(47	)	$	—		$	409
Comprehensive income (loss) attributable to CCIC stockholders	$	456	$	(47	)	$	—		$	409
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	0.96	$	(0.11	)	$	—		$	0.85
Net income (loss) attributable to CCIC common stockholders - diluted	$	0.95	$	(0.11	)	$	—		$	0.84



	Three Months Ended June 30, 2019
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	1,238	$	25		$	—		$	1,263
Services and other	240		(55		)	(1		)	184
Net revenues	1,478		(30		)	(1		)	1,447
Operating expenses:
Costs of operations^(a):
Services and other	138		—			(1		)	137
Total operating expenses	1,059		—			(1		)	1,058
Operating income (loss)	419		(30		)	—			389
Income (loss) before income taxes	250		(30		)	—			220
Net income (loss) attributable to CCIC stockholders	246		(30		)	—			216
Net income (loss) attributable to CCIC common stockholders	$	218	$	(30	)	$	—		$	188
Net income (loss)	$	246	$	(30	)	$	—		$	216
Comprehensive income (loss) attributable to CCIC stockholders	$	246	$	(30	)	$	—		$	216
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	0.52	$	(0.07	)	$	—		$	0.45
Net income (loss) attributable to CCIC common stockholders - diluted	$	0.52	$	(0.07	)	$	—		$	0.45



	Three Months Ended March 31, 2019
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	1,219	$	23		$	—		$	1,242
Services and other	207		(40		)	(1		)	166
Net revenues	1,426		(17		)	(1		)	1,408
Operating expenses:
Costs of operations^(a):
Services and other	125		—			(1		)	124
Total operating expenses	1,042		—			(1		)	1,041
Operating income (loss)	384		(17		)	—			367
Income (loss) before income taxes	216		(17		)	—			199
Net income (loss) attributable to CCIC stockholders	210		(17		)	—			193
Net income (loss) attributable to CCIC common stockholders	$	182	$	(17	)	$	—		$	165
Net income (loss)	$	210	$	(17	)	$	—		$	193
Comprehensive income (loss) attributable to CCIC stockholders	$	210	$	(17	)	$	—		$	193
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	0.44	$	(0.04	)	$	—		$	0.40
Net income (loss) attributable to CCIC common stockholders - diluted	$	0.44	$	(0.04	)	$	—		$	0.40



	Three Months Ended December 31, 2018
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	1,209	$	22		$	—		$	1,231
Services and other	210		(35		)	—			175
Net revenues	1,419		(13		)	—			1,406
Operating expenses:
Depreciation, amortization and accretion	390		—			(1		)	389
Total operating expenses	1,040		—			(1		)	1,039
Operating income (loss)	379		(13		)	1			367
Income (loss) before income taxes	218		(13		)	1			206
Net income (loss) attributable to CCIC stockholders	213		(13		)	1			201
Net income (loss) attributable to CCIC common stockholders	$	185	$	(13	)	$	1		$	173
Net income (loss)	$	213	$	(13	)	$	1		$	201
Comprehensive income (loss) attributable to CCIC stockholders	$	213	$	(13	)	$	1		$	201
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	0.45	$	(0.03	)	$	—		$	0.42
Net income (loss) attributable to CCIC common stockholders - diluted	$	0.44	$	(0.02	)	$	—		$	0.42



	Nine Months Ended September 30, 2018
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	3,507	$	58		$	—		$	3,565
Services and other	497		(93		)	(5		)	399
Net revenues	4,004		(35		)	(5		)	3,964
Operating expenses:
Costs of operations^(a):
Services and other	304		—			(3		)	301
Total operating expenses	2,953		—			(3		)	2,950
Operating income (loss)	1,051		(35		)	(2		)	1,014
Income (loss) before income taxes	471		(35		)	(2		)	434
Net income (loss) attributable to CCIC stockholders	458		(35		)	(2		)	421
Net income (loss) attributable to CCIC common stockholders	$	373	$	(35	)	$	(2	)	$	336
Net income (loss)	$	458	$	(35	)	$	(2	)	$	421
Comprehensive income (loss) attributable to CCIC stockholders	$	457	$	(35	)	$	(2	)	$	420
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	0.90	$	(0.09	)	$	—		$	0.81
Net income (loss) attributable to CCIC common stockholders - diluted	$	0.90	$	(0.09	)	$	—		$	0.81



	Three Months Ended September 30, 2018
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	1,184	$	21		$	—		$	1,205
Services and other	191		(33		)	(2		)	156
Net revenues	1,375		(12		)	(2		)	1,361
Operating expenses:
Costs of operations^(a):
Services and other	119		—			(1		)	118
Total operating expenses	1,016		—			(1		)	1,015
Operating income (loss)	359		(12		)	(1		)	346
Income (loss) before income taxes	169		(12		)	(1		)	156
Net income (loss) attributable to CCIC stockholders	164		(12		)	(1		)	151
Net income (loss) attributable to CCIC common stockholders	$	136	$	(12	)	$	(1	)	$	123
Net income (loss)	$	164	$	(12	)	$	(1	)	$	151
Comprehensive income (loss) attributable to CCIC stockholders	$	164	$	(12	)	$	(1	)	$	151
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	0.33	$	(0.03	)	$	—		$	0.30
Net income (loss) attributable to CCIC common stockholders - diluted	$	0.33	$	(0.03	)	$	—		$	0.30



	Six Months Ended June 30, 2018
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	2,323	$	37		$	—		$	2,360
Services and other	307		(60		)	(3		)	244
Net revenues	2,630		(23		)	(3		)	2,604
Operating expenses:
Costs of operations^(a):
Services and other	185		—			(2		)	183
Total operating expenses	1,936		—			(2		)	1,934
Operating income (loss)	694		(23		)	(1		)	670
Income (loss) before income taxes	303		(23		)	(1		)	279
Net income (loss) attributable to CCIC stockholders	294		(23		)	(1		)	270
Net income (loss) attributable to CCIC common stockholders	$	237	$	(23	)	$	(1	)	$	213
Net income (loss)	$	294	$	(23	)	$	(1	)	$	270
Comprehensive income (loss) attributable to CCIC stockholders	$	293	$	(23	)	$	(1	)	$	269
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	0.58	$	(0.06	)	$	—		$	0.52
Net income (loss) attributable to CCIC common stockholders - diluted	$	0.57	$	(0.05	)	$	—		$	0.52



	Three Months Ended March 31, 2018
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	1,153	$	18		$	—		$	1,171
Services and other	146		(32		)	(1		)	113
Net revenues	1,299		(14		)	(1		)	1,284
Operating expenses:
Costs of operations^(a):
Services and other	86		—			(1		)	85
Total operating expenses	950		—			(1		)	949
Operating income (loss)	349		(14		)	—			335
Income (loss) before income taxes	118		(14		)	—			104
Net income (loss) attributable to CCIC stockholders	114		(14		)	—			100
Net income (loss) attributable to CCIC common stockholders	$	86	$	(14	)	$	—		$	72
Net income (loss)	$	114	$	(14	)	$	—		$	100
Comprehensive income (loss) attributable to CCIC stockholders	$	114	$	(14	)	$	—		$	100
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	0.21	$	(0.03	)	$	—		$	0.18
Net income (loss) attributable to CCIC common stockholders - diluted	$	0.21	$	(0.03	)	$	—		$	0.18

(a)

Exclusive of depreciation, amortization and accretion shown se



	Six Months Ended June 30, 2019
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	2,457	$	48		$	—		$	2,505
Services and other	447		(95		)	(2		)	350
Net revenues	2,904		(47		)	(2		)	2,855
Operating expenses:
Costs of operations^(a):
Services and other	263		—			(2		)	261
Total operating expenses	2,101		—			(2		)	2,099
Operating income (loss)	803		(47		)	—			756
Income (loss) before income taxes	466		(47		)	—			419
Net income (loss) attributable to CCIC stockholders	456		(47		)	—			409
Net income (loss) attributable to CCIC common stockholders	$	399	$	(47	)	$	—		$	352
Net income (loss)	$	456	$	(47	)	$	—		$	409
Comprehensive income (loss) attributable to CCIC stockholders	$	456	$	(47	)	$	—		$	409
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	0.96	$	(0.11	)	$	—		$	0.85
Net income (loss) attributable to CCIC common stockholders - diluted	$	0.95	$	(0.11	)	$	—		$	0.84



	Six Months Ended June 30, 2018
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	2,323	$	37		$	—		$	2,360
Services and other	307		(60		)	(3		)	244
Net revenues	2,630		(23		)	(3		)	2,604
Operating expenses:
Costs of operations^(a):
Services and other	185		—			(2		)	183
Total operating expenses	1,936		—			(2		)	1,934
Operating income (loss)	694		(23		)	(1		)	670
Income (loss) before income taxes	303		(23		)	(1		)	279
Net income (loss) attributable to CCIC stockholders	294		(23		)	(1		)	270
Net income (loss) attributable to CCIC common stockholders	$	237	$	(23	)	$	(1	)	$	213
Net income (loss)	$	294	$	(23	)	$	(1	)	$	270
Comprehensive income (loss) attributable to CCIC stockholders	$	293	$	(23	)	$	(1	)	$	269
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	0.58	$	(0.06	)	$	—		$	0.52
Net income (loss) attributable to CCIC common stockholders - diluted	$	0.57	$	(0.05	)	$	—		$	0.52


(a)	Exclusive of depreciation, amortization and accretion shown separately.



	Nine Months Ended September 30, 2019
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	3,718	$	75		$	—		$	3,793
Services and other	700		(152		)	(4		)	544
Net revenues	4,418		(77		)	(4		)	4,337
Operating expenses:
Costs of operations^(a):
Services and other	410		—			(3		)	407
Depreciation, amortization and accretion	1,176		—			(1		)	1,175
Total operating expenses	3,161		—			(4		)	3,157
Operating income (loss)	1,257		(77		)	—			1,180
Income (loss) before income taxes	744		(77		)	—			667
Net income (loss) attributable to CCIC stockholders	729		(77		)	—			652
Net income (loss) attributable to CCIC common stockholders	$	644	$	(77	)	$	—		$	567
Net income (loss)	$	729	$	(77	)	$	—		$	652
Comprehensive income (loss) attributable to CCIC stockholders	$	729	$	(77	)	$	—		$	652
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	1.55	$	(0.19	)	$	—		$	1.36
Net income (loss) attributable to CCIC common stockholders - diluted	$	1.54	$	(0.18	)	$	—		$	1.36



	Nine Months Ended September 30, 2018
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	3,507	$	58		$	—		$	3,565
Services and other	497		(93		)	(5		)	399
Net revenues	4,004		(35		)	(5		)	3,964
Operating expenses:
Costs of operations^(a):
Services and other	304		—			(3		)	301
Total operating expenses	2,953		—			(3		)	2,950
Operating income (loss)	1,051		(35		)	(2		)	1,014
Income (loss) before income taxes	471		(35		)	(2		)	434
Net income (loss) attributable to CCIC stockholders	458		(35		)	(2		)	421
Net income (loss) attributable to CCIC common stockholders	$	373	$	(35	)	$	(2	)	$	336
Net income (loss)	$	458	$	(35	)	$	(2	)	$	421
Comprehensive income (loss) attributable to CCIC stockholders	$	457	$	(35	)	$	(2	)	$	420
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	0.90	$	(0.09	)	$	—		$	0.81
Net income (loss) attributable to CCIC common stockholders - diluted	$	0.90	$	(0.09	)	$	—		$	0.81



	September 30, 2019						June 30, 2019						March 31, 2019
	Three Months Ended			Nine Months Ended			Three Months Ended			Six Months Ended			Three Months Ended
	(As Restated)
Net revenues:
Site rental	$	1,287		$	3,793		$	1,263		$	2,505		$	1,242
Services and other	195			544			184			350			166
Net revenues	1,482			4,337			1,447			2,855			1,408
Operating expenses:
Costs of operations^(a):
Site rental	369			1,095			365			726			361
Services and other	146			407			137			261			124
Selling, general and administrative	150			457			155			307			152
Asset write-down charges	2			13			6			12			6
Acquisition and integration costs	4			10			2			6			4
Depreciation, amortization and accretion	388			1,175			393			787			394
Total operating expenses	1,059			3,157			1,058			2,099			1,041
Operating income (loss)	423			1,180			389			756			367
Interest expense and amortization of deferred financing costs	(173		)	(510		)	(169		)	(337		)	(168		)
Gains (losses) on retirement of long-term obligations	—			(2		)	(1		)	(2		)	(1		)
Interest income	2			5			1			3			2
Other income (expense)	(5		)	(6		)	—			(1		)	(1		)
Income (loss) before income taxes	247			667			220			419			199
Benefit (provision) for income taxes	(5		)	(15		)	(4		)	(10		)	(6		)
Net income (loss) attributable to CCIC stockholders	242			652			216			409			193
Dividends/distributions on preferred stock	(28		)	(85		)	(28		)	(57		)	(28		)
Net income (loss) attributable to CCIC common stockholders	214			567			188			352			165
Net income (loss)	242			652			216			409			193
Other comprehensive income (loss):
Foreign currency translation adjustments	—			—			—			—			—
Total other comprehensive income (loss)	—			—			—			—			—
Comprehensive income (loss) attributable to CCIC stockholders	$	242		$	652		$	216		$	409		$	193
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	0.51		$	1.36		$	0.45		$	0.85		$	0.40
Net income (loss) attributable to CCIC common stockholders - diluted	$	0.51		$	1.36		$	0.45		$	0.84		$	0.40
Weighted-average common shares outstanding:
Basic	416			416			416			415			415
Diluted	418			418			418			417			417


(a)	Exclusive of depreciation, amortization and accretion shown separately.



	Year Ended December 31, 2018
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	4,716	$	80		$	—		$	4,796
Services and other	707		(128		)	(5		)	574
Net revenues	5,423		(48		)	(5		)	5,370
Operating expenses:
Costs of operations^(a):
Services and other	437		—			(3		)	434
Depreciation, amortization and accretion	1,528		—			(1		)	1,527
Total operating expenses	3,991		—			(4		)	3,987
Operating income (loss)	1,432		(48		)	(1		)	1,383
Income (loss) before income taxes	690		(48		)	(1		)	641
Net income (loss) attributable to CCIC stockholders	671		(48		)	(1		)	622
Net income (loss) attributable to CCIC common stockholders	$	558	$	(48	)	$	(1	)	$	509
Net income (loss)	$	671	$	(48	)	$	(1	)	$	622
Comprehensive income (loss) attributable to CCIC stockholders	$	670	$	(48	)	$	(1	)	$	621
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	1.35	$	(0.12	)	$	—		$	1.23
Net income (loss) attributable to CCIC common stockholders - diluted	$	1.34	$	(0.11	)	$	—		$	1.23



	December 31, 2018			September 30, 2018						June 30, 2018						March 31, 2018
	Three Months Ended			Three Months Ended			Nine Months Ended			Three Months Ended			Six Months Ended			Three Months Ended
	(As Restated)
Net revenues:
Site rental	$	1,231		$	1,205		$	3,565		$	1,188		$	2,360		$	1,171
Services and other	175			156			399			131			244			113
Net revenues	1,406			1,361			3,964			1,319			2,604			1,284
Operating expenses:
Costs of operations^(a):
Site rental	353			355			1,057			355			702			347
Services and other	135			118			301			98			183			85
Selling, general and administrative	145			145			418			138			273			134
Asset write-down charges	8			8			18			6			9			3
Acquisition and integration costs	9			4			18			8			14			6
Depreciation, amortization and accretion	389			385			1,138			379			753			374
Total operating expenses	1,039			1,015			2,950			984			1,934			949
Operating income (loss)	367			346			1,014			335			670			335
Interest expense and amortization of deferred financing costs	(164		)	(160		)	(478		)	(158		)	(318		)	(160		)
Gains (losses) on retirement of long-term obligations	—			(32		)	(106		)	(3		)	(74		)	(71		)
Interest income	2			1			4			1			2			1
Other income (expense)	1			1			—			—			(1		)	(1		)
Income (loss) before income taxes	206			156			434			175			279			104
Benefit (provision) for income taxes	(5		)	(5		)	(13		)	(5		)	(9		)	(4		)
Net income (loss) attributable to CCIC stockholders	201			151			421			170			270			100
Dividends/distributions on preferred stock	(28		)	(28		)	(85		)	(28		)	(57		)	(28		)
Net income (loss) attributable to CCIC common stockholders	173			123			336			142			213			72
Net income (loss)	201			151			421			170			270			100
Other comprehensive income (loss):
Foreign currency translation adjustments	—			—			(1		)	(1		)	(1		)	—
Total other comprehensive income (loss)	—			—			(1		)	(1		)	(1		)	—
Comprehensive income (loss) attributable to CCIC stockholders	$	201		$	151		$	420		$	169		$	269		$	100
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	0.42		$	0.30		$	0.81		$	0.34		$	0.52		$	0.18
Net income (loss) attributable to CCIC common stockholders - diluted	$	0.42		$	0.30		$	0.81		$	0.34		$	0.52		$	0.18
Weighted-average common shares outstanding:
Basic	415			415			413			415			412			409
Diluted	417			416			414			416			413			410

(a)

Exclusive of depreciation, amortization and accretion shown separately.



	Year Ended December 31, 2017
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	3,669	$	65		$	—		$	3,734
Services and other	687		(124		)	(42		)	521
Net revenues	4,356		(59		)	(42		)	4,255
Operating expenses:
Costs of operations^(a):
Services and other	420		—			(21		)	399
Depreciation, amortization and accretion	1,242		—			(1		)	1,241
Total operating expenses	3,310		—			(22		)	3,288
Operating income (loss)	1,046		(59		)	(20		)	967
Income (loss) before income taxes	471		(59		)	(20		)	392
Net income (loss) attributable to CCIC stockholders	445		(59		)	(20		)	366
Net income (loss) attributable to CCIC common stockholders	$	387	$	(59	)	$	(20	)	$	308
Net income (loss)	$	445	$	(59	)	$	(20	)	$	366
Comprehensive income (loss) attributable to CCIC stockholders	$	447	$	(59	)	$	(20	)	$	368
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	1.01	$	(0.16	)	$	(0.05	)	$	0.80
Net income (loss) attributable to CCIC common stockholders - diluted	$	1.01	$	(0.16	)	$	(0.05	)	$	0.80

(a)

Exclusive of depreciation, amortization and accretion shown separately.

Condensed Cash Flow Statement [Table Text Block]



	Six Months Ended June 30, 2019
	As Reported		Restatement Adjustments			Other Adjustments		As Restated
Cash flows from operating activities:
Net income (loss)	$	456	$	(47	)	$	—	$	409
Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:
Increase (decrease) in other liabilities	30		47			—		77
Net cash provided by (used for) operating activities	1,227		—			—		1,227
Net increase (decrease) in cash, cash equivalents, and restricted cash	16		—			—		16
Cash, cash equivalents, and restricted cash at beginning of period	413		—			—		413
Cash, cash equivalents, and restricted cash at end of period	$	429	$	—		$	—	$	429



	Nine Months Ended September 30, 2019
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
Cash flows from operating activities:
Net income (loss)	$	729		$	(77	)	$	—		$	652
Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:
Depreciation, amortization and accretion	1,176			—			(1		)	1,175
Increase (decrease) in other liabilities	102			77			—			179
Net cash provided by (used for) operating activities	1,891			—			(1		)	1,890
Cash flows from investing activities:
Capital expenditures	(1,538		)	—			1			(1,537		)
Net cash provided by (used for) investing activities	(1,550		)	—			1			(1,549		)
Net increase (decrease) in cash, cash equivalents, and restricted cash	(88		)	—			—			(88		)
Cash, cash equivalents, and restricted cash at beginning of period	413			—			—			413
Cash, cash equivalents, and restricted cash at end of period	$	325		$	—		$	—		$	325

Flows



	September 30, 2019			June 30, 2019			March 31, 2019
	Nine Months Ended			Six Months Ended			Three Months Ended
	(As Restated)
Cash flows from operating activities:
Net income (loss)	$	652		$	409		$	193
Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:
Depreciation, amortization and accretion	1,175			787			394
(Gains) losses on retirement of long-term obligations	2			2			1
Amortization of deferred financing costs and other non-cash interest	1			1			1
Stock-based compensation expense	91			62			29
Asset write-down charges	13			12			6
Deferred income tax (benefit) provision	2			1			1
Other non-cash adjustments, net	4			3			2
Changes in assets and liabilities, excluding the effects of acquisitions:
Increase (decrease) in accrued interest	(38		)	18			(41		)
Increase (decrease) in accounts payable	37			6			(5		)
Increase (decrease) in other liabilities	179			77			(7		)
Decrease (increase) in receivables	(166		)	(89		)	(43		)
Decrease (increase) in other assets	(62		)	(62		)	(19		)
Net cash provided by (used for) operating activities	1,890			1,227			512
Cash flows from investing activities:
Capital expenditures	(1,537		)	(998		)	(480		)
Payments for acquisitions, net of cash acquired	(15		)	(13		)	(10		)
Other investing activities, net	3			1			1
Net cash provided by (used for) investing activities	(1,549		)	(1,010		)	(489		)
Cash flows from financing activities:
Proceeds from issuance of long-term debt	1,895			995			996
Principal payments on debt and other long-term obligations	(59		)	(36		)	(25		)
Purchases and redemptions of long-term debt	(12		)	(12		)	(12		)
Borrowings under revolving credit facility	1,585			1,195			710
Payments under revolving credit facility	(2,270		)	(1,785		)	(1,140		)
Net issuances (repayments) under commercial paper program	—			500			—
Payments for financing costs	(24		)	(14		)	(10		)
Purchases of common stock	(44		)	(43		)	(42		)
Dividends/distributions paid on common stock	(1,415		)	(944		)	(477		)
Dividends/distributions paid on preferred stock	(85		)	(57		)	(28		)
Net cash provided by (used for) financing activities	(429		)	(201		)	(28		)
Net increase (decrease) in cash, cash equivalents, and restricted cash	(88		)	16			(5		)
Effect of exchange rate changes on cash	—			—			—
Cash, cash equivalents, and restricted cash at beginning of period	413			413			413
Cash, cash equivalents, and restricted cash at end of period	325			429			408



	September 30, 2018			June 30, 2018			March 31, 2018
	Nine Months Ended			Six Months Ended			Three Months Ended
	(As Restated)
Cash flows from operating activities:
Net income (loss)	$	421		$	270		$	100
Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:
Depreciation, amortization and accretion	1,138			753			374
(Gains) losses on retirement of long-term obligations	106			74			71
Amortization of deferred financing costs and other non-cash interest	5			4			2
Stock-based compensation expense	79			47			23
Asset write-down charges	18			9			3
Deferred income tax (benefit) provision	2			1			1
Other non-cash adjustments, net	2			1			2
Changes in assets and liabilities, excluding the effects of acquisitions:
Increase (decrease) in accrued interest	(31		)	22			(28		)
Increase (decrease) in accounts payable	31			3			(5		)
Increase (decrease) in other liabilities	179			76			(43		)
Decrease (increase) in receivables	(74		)	(59		)	(5		)
Decrease (increase) in other assets	(103		)	(91		)	(43		)
Net cash provided by (used for) operating activities	1,773			1,110			452
Cash flows from investing activities:
Capital expenditures	(1,239		)	(762		)	(370		)
Payments for acquisitions, net of cash acquired	(26		)	(18		)	(14		)
Other investing activities, net	(14		)	3			—
Net cash provided by (used for) investing activities	(1,279		)	(777		)	(384		)
Cash flows from financing activities:
Proceeds from issuance of long-term debt	2,743			1,743			1,743
Principal payments on debt and other long-term obligations	(76		)	(47		)	(32		)
Purchases and redemptions of long-term debt	(2,346		)	(1,318		)	(1,318		)
Borrowings under revolving credit facility	1,290			485			170
Payments under revolving credit facility	(1,465		)	(1,150		)	(1,050		)
Payments for financing costs	(33		)	(20		)	(15		)
Net proceeds from issuance of common stock	841			841			843
Purchases of common stock	(34		)	(34		)	(33		)
Dividends/distributions paid on common stock	(1,315		)	(879		)	(443		)
Dividends/distributions paid on preferred stock	(85		)	(57		)	(28		)
Net cash provided by (used for) financing activities	(480		)	(436		)	(163		)
Net increase (decrease) in cash, cash equivalents, and restricted cash	14			(103		)	(95		)
Effect of exchange rate changes on cash	(1		)	(1		)	—
Cash, cash equivalents, and restricted cash at beginning of period	440			440			440
Cash, cash equivalents, and restricted cash at end of period	453			336			345

rately.

Consolidated Statement of Cas

Consolidated Statement of Cash Flows



	Year Ended December 31, 2018
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
Cash flows from operating activities:
Net income (loss)	$	671		$	(48	)	$	(1	)	$	622
Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:
Depreciation, amortization and accretion	1,528			—			(1		)	1,527
Increase (decrease) in other liabilities	223			48			—			271
Net cash provided by (used for) operating activities	2,502			—			(2		)	2,500
Cash flows from investing activities:
Capital expenditures	(1,741		)	—			2			(1,739		)
Net cash provided by (used for) investing activities	(1,795		)	—			2			(1,793		)
Net increase (decrease) in cash, cash equivalents, and restricted cash	(26		)	—			—			(26		)
Cash, cash equivalents, and restricted cash at beginning of period	440			—			—			440
Cash, cash equivalents, and restricted cash at end of period	$	413		$	—		$	—		$	413



	Year Ended December 31, 2017
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
Cash flows from operating activities:
Net income (loss)	$	445		$	(59	)	$	(20	)	$	366
Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:
Depreciation, amortization and accretion	1,242			—			(1		)	1,241
Increase (decrease) in other liabilities	175			59			—			234
Decrease (increase) in receivables	61			—			10			71
Net cash provided by (used for) operating activities	2,043			—			(11		)	2,032
Cash flows from investing activities:
Capital expenditures	(1,228		)	—			11			(1,217		)
Net cash provided by (used for) investing activities	(10,493		)	—			11			(10,482		)
Net increase (decrease) in cash, cash equivalents, and restricted cash	(258		)	—			—			(258		)
Cash, cash equivalents, and restricted cash at beginning of period	697			—			—			697
Cash, cash equivalents, and restricted cash at end of period	$	440		$	—		$	—		$	440

Condensed Financial Statements [Table Text Block]



	December 31, 2016
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
Dividends/distributions in excess of earnings	$	(3,379	)	$	(332	)	$	(3	)	$	(3,714	)
Total stockholders' equity	$	7,557		$	(332	)	$	(3	)	$	7,222

	December 31, 2017
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
Dividends/distributions in excess of earnings	$	(4,505	)	$	(391	)	$	(23	)	$	(4,919	)
Total stockholders' equity	$	12,339		$	(391	)	$	(23	)	$	11,925

	December 31, 2018
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
Dividends/distributions in excess of earnings	$	(5,732	)	$	(440	)	$	(23	)	$	(6,195	)
Total stockholders' equity	$	12,034		$	(440	)	$	(23	)	$	11,571

Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2019

Accounting Policies [Abstract]

Components of Interest Expense and Amortization of Deferred Financing Costs

The components of interest expense and amortization of deferred financing costs are as follows:



	Years Ended December 31,
	2019			2018			2017
Interest expense on debt obligations	$	682		$	635		$	582
Amortization of deferred financing costs and adjustments on long-term debt, net	21			21			19
Capitalized interest	(20		)	(15		)	(12		)
Other	—			1			2
Total	$	683		$	642		$	591

Reconciliation of the Numerators and Denominators of the Basic and Diluted Per Share Computations



	Years Ended December 31,
	2019			2018			2017
				(As Restated)
Net income (loss) attributable to CCIC stockholders	$	860		$	622		$	366
Dividends/distributions on preferred stock	(113		)	(113		)	(58		)
Net income (loss) attributable to CCIC common stockholders for basic and diluted computations	$	747		$	509		$	308

Weighted-average number of common shares outstanding (in millions):
Basic weighted-average number of common stock outstanding	416			413			382
Effect of assumed dilution from potential issuance of common shares relating to RSUs	2			2			1
Diluted weighted-average number of common shares outstanding	418			415			383

Net income (loss) attributable to CCIC common stockholders, per common share:
Basic	$	1.80		$	1.23		$	0.80
Diluted	$	1.79		$	1.23		$	0.80

Dividends/distributions declared per share of common stock	$	4.58		$	4.28		$	3.90

Acquisitions Acquisitions (Tables)

12 Months Ended

Dec. 31, 2019

Business Acquisition, Pro Forma Information [Table Text Block]



	Twelve Months Ended December 31, 2017
	(As Restated)
Net revenues	$	4,949
Income (loss) before income taxes	$	462		^(b)(c)
Benefit (provision) for income taxes	$	(29	)	^(a)
Net income (loss)	$	433		^(b)(c)
Basic net income (loss) attributable to CCIC common stockholders, per common share	$	0.68		^(c)(d)
Diluted net income (loss) attributable to CCIC common stockholders, per common share	$	0.67		^(c)(d)

(a)


(b)	For the year ended December 31, 2017, amounts are inclusive of pro forma adjustments to depreciation and amortization of $247 million, related to property and equipment and intangibles recorded as a result of the 2017 Acquisitions.


(c)	Pro forma amounts include the impact of the interest expense and common stock share issuances associated with the related debt and equity financings for the 2017 Acquisitions (see above and notes 9 and 12).

(d)

Lightower Acquisition [Member]

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]

The final purchase price allocation for the Lightower Acquisition is shown below.



Final Purchase Price Allocation
Current assets	$	99
Property and equipment	2,194
Goodwill^(a)	3,171
Other intangible assets, net^(b)	2,177
Other non-current assets	27
Current liabilities	(176		)
Other non-current liabilities	(342		)
Net assets acquired^(c)	$	7,150


(a)	The final purchase price allocation for the Lightower Acquisition resulted in the recognition of goodwill based on:


•	the Company's expectation to leverage the Lightower fiber footprint to support new small cells and fiber solutions,


•	the complementary nature of the Lightower fiber to the Company's existing fiber assets and its location where the Company expects to see wireless carrier network investments,


•	the Company's belief that the acquired fiber assets are well-positioned to benefit from the continued growth trends in the demand for data, and


•	other intangibles not qualified for separate recognition, including the assembled workforce.


(b)	Predominantly comprised of site rental contracts and tenant relationships.

(c)

The vast majority of the assets have been included in the Company's REIT. As such, no deferred taxes were recorded in connection with the Lightower Acquisition

FiberNet Acquisition [Member]

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]

The final purchase price allocation for the FiberNet Acquisition is shown below.



Final Purchase Price Allocation
Current assets	$	52
Property and equipment	438
Goodwill^(a)	778
Other intangible assets, net^(b)	327
Other non-current assets	2
Current liabilities	(41		)
Other non-current liabilities	(35		)
Net assets acquired^(c)	$	1,521


(a)	The final purchase price allocation for the FiberNet Acquisition resulted in the recognition of goodwill based on:


•	the Company's expectation to leverage the FiberNet fiber footprint to support new small cells and fiber solutions,


•	the complementary nature of the FiberNet fiber to the Company's existing fiber assets and its location in top metro markets where the Company expects to see wireless carrier network investments,


•	the Company's belief that the acquired fiber assets are well-positioned to benefit from the continued growth trends in the demand for data, and


•	other intangibles not qualified for separate recognition, including the assembled workforce.


(b)	Predominantly comprised of site rental contracts and tenant relationships.

(c)

The vast majority of the assets have been included in the Company's REIT. As such, no deferred taxes were recorded in connection with the FiberNet Acquisition.

Revenue (Tables)

12 Months Ended

Dec. 31, 2019

Revenue from Contract with Customer [Abstract]

Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block]



	Years Ending December 31,
	2020		2021		2022		2023		2024		Thereafter		Total
Contracted amounts^(a)	$	4,177	$	3,986	$	3,758	$	3,141	$	2,405	$	6,908	$	24,375

(a)

Based on the nature of the contract, tenant contracts are accounted for pursuant to relevant lease accounting (ASC 842) or revenue accounting (ASC 606) guidance. Excludes amounts related to services, as those contracts generally have a duration of one year or less.

Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2019

Property, Plant and Equipment [Abstract]

Major Classes of Property and Equipment

The major classes of property and equipment are summarized in the table below. The information below also gives effect to the Historical Adjustments as discussed in note 2.



	Estimated Useful Lives	As of December 31,
	Estimated Useful Lives	2019			2018
					(As Restated)
Land^(a)	—	$	2,080		$	1,981
Buildings	40 years	147			134
Communications infrastructure assets	1-20 years	20,521			18,683
Information technology assets and other	2-7 years	506			443
Construction in process	—	1,080			975
Total gross property and equipment		24,334			22,216
Less: accumulated depreciation		(9,668		)	(8,563		)
Total property and equipment, net		$	14,666		$	13,653

(a)

Includes land owned through fee interests and perpetual easements.

Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2019

Goodwill and Finite-Lived Intangible Assets [Line Items]

Schedule of Goodwill

Goodwill

The change in the carrying value of goodwill for the year ended December 31, 2018 is as follows:



Balance as of December 31, 2017	$	10,021
Adjustments due to other acquisitions, purchase price allocations and other, net	57
Balance as of December 31, 2018	$	10,078

Intangible Assets

Intangibles

The following is a summary of the Company's intangible assets. See note 4 for further discussion of the Company's acquisitions.



	As of December 31, 2019							As of December 31, 2018
	Gross Carrying Value		Accumulated Amortization			Net Book Value		Gross Carrying Value		Accumulated Amortization			Net Book Value
Site rental contracts and tenant relationships	$	7,761	$	(2,997	)	$	4,764	$	7,787	$	(2,578	)	$	5,209
Other intangible assets^(a)	143		(71		)	72		494		(187		)	307
Total	$	7,904	$	(3,068	)	$	4,836	$	8,281	$	(2,765	)	$	5,516

(a)

See "Recently Adopted Accounting Pronouncements" in note 3 for a discussion of the recently adopted new lease standard, including with respect to below-market leases previously classified as intangible assets.

Schedule of Amortization Expense

Amortization expense related to intangible assets is classified as follows on the Company's consolidated statement of operations and comprehensive income (loss):



	For Years Ended December 31,
Classification	2019		2018		2017
Depreciation, amortization and accretion	$	428	$	428	$	314
Site rental costs of operations^(a)	—		17		18
Total amortization expense	$	428	$	445	$	332

(a)

Site Rental Contracts and Customer Relationships [Member]

Goodwill and Finite-Lived Intangible Assets [Line Items]

Schedule of Estimated Annual Amortization Expense

The estimated annual amortization expense related to intangible assets for the years ending December 31, 2020 to 2024 is as follows:



	Years Ending December 31,
	2020		2021		2022		2023		2024
Estimated annual amortization	$	427	$	427	$	427	$	427	$	384

Other Liabilities (Tables)

12 Months Ended

Dec. 31, 2019

Other Liabilities [Abstract]

Other Noncurrent Liabilities



	December 31,
	2019		2018
			(As Restated)
Deferred rental revenues	$	1,814	$	1,618
Deferred ground lease payable^(a)	—		603
Above-market leases for land interests, net^(a)	—		181
Deferred credits, net	434		499
Asset retirement obligation	227		192
Deferred income tax liabilities	8		7
Other long-term liabilities	33		10
Total	$	2,516	$	3,110

(a)

See "Recently Adopted Accounting Pronouncements" in note 3 for a discussion of the recently adopted new lease standard, including with respect to deferred ground lease payable and above-market leases previously classified as other long-term liabilities.

Amortization of below-market tenant leases

The following table summarizes the estimated annual amounts related to below-market tenant leases expected to be amortized into site rental revenues for the years ending December 31, 2020 to 2024 are as follows:



	Years Ending December 31,
	2020		2021		2022		2023		2024
Below-market tenant leases	$	57	$	53	$	49	$	45	$	41

Debt and Other Obligations (Tables)

12 Months Ended

Dec. 31, 2019

Debt and Other Obligations [Abstract]

Schedule of Long-Term Debt Instruments

The table below sets forth the Company's debt and other obligations as of December 31, 2019.



	Original Issue Date		Contractual Maturity Date		Outstanding Balance as of December 31,					Stated Interest Rate as of December 31,
	Original Issue Date		Contractual Maturity Date		2019			2018		2019		^(a)
Secured Notes, Series 2009-1, Class A-1	July 2009		Aug. 2019	^(d)	$	—		$	12	N/A
3.849% Secured Notes	Dec. 2012		Apr. 2023		995			994		3.9	%
Secured Notes, Series 2009-1, Class A-2	July 2009		Aug. 2029	^(d)	67			70		9.0	%
Tower Revenue Notes, Series 2015-1	May 2015		May 2042	^(b)(c)	298			298		3.2	%
Tower Revenue Notes, Series 2018-1	July 2018		July 2043	^(b)(c)	248			247		3.7	%
Tower Revenue Notes, Series 2015-2	May 2015		May 2045	^(b)(c)	694			693		3.7	%
Tower Revenue Notes, Series 2018-2	July 2018		July 2048	^(b)(c)	742			742		4.2	%
Finance leases and other obligations	Various		Various	^(e)	227			227		Various
Total secured debt					3,271			3,283
2016 Revolver	Jan. 2016		June 2024		525		^(f)	1,075		2.8	%	^(g)
2016 Term Loan A	Jan. 2016		June 2024		2,310			2,354		2.9	%	^(g)
Commercial Paper Notes	Various	^(h)	Various	^(h)	155			—		Various		⁽ⁱ⁾
3.400% Senior Notes	Feb./May 2016		Feb. 2021		850			850		3.4	%
2.250% Senior Notes	Sept. 2016		Sept. 2021		698			697		2.3	%
4.875% Senior Notes	Apr. 2014		Apr. 2022		846			844		4.9	%
5.250% Senior Notes	Oct. 2012		Jan. 2023		1,644			1,641		5.3	%
3.150% Senior Notes	Jan. 2018		July 2023		744			742		3.2	%
3.200% Senior Notes	Aug. 2017		Sept. 2024		744			743		3.2	%
4.450% Senior Notes	Feb. 2016		Feb. 2026		893			892		4.5	%
3.700% Senior Notes	May 2016		June 2026		744			744		3.7	%
4.000% Senior Notes	Feb. 2017		Mar. 2027		495			494		4.0	%
3.650% Senior Notes	Aug. 2017		Sept. 2027		993			992		3.7	%
3.800% Senior Notes	Jan. 2018		Feb. 2028		990			988		3.8	%
4.300% Senior Notes	Feb. 2019		Feb. 2029		592			—		4.3	%
3.100% Senior Notes	Aug. 2019		Nov. 2029		543			—		3.1	%
4.750% Senior Notes	May 2017		May 2047		344			343		4.8	%
5.200% Senior Notes	Feb. 2019		Feb. 2049		395			—		5.2	%
4.000% Senior Notes	Aug. 2019		Nov. 2049		345			—		4.0	%
Total unsecured debt					$	14,850		$	13,399
Total debt and other obligations					$	18,121		$	16,682
Less: current maturities and short-term debt and other current obligations					$	100		$	107
Non-current portion of long-term debt and other long-term obligations					$	18,021		$	16,575


(a)	Represents the weighted-average stated interest rate.


(b)	The Tower Revenue Notes, Series 2015-1 and 2015-2 ("May 2015 Tower Revenue Notes") and Tower Revenue Notes, Series 2018-1 and 2018-2 ("July 2018 Tower Revenue Notes") are collectively referred to herein as "Tower Revenue Notes."

(c)


(d)	The Secured Notes, Series 2009-1, Class A-1 and Secured Notes, Series 2009-1, Class A-2 are collectively referred to herein as "2009 Securitized Notes."


(e)	The Company's finance leases and other obligations relate to land, fiber, vehicles, and other assets and bear interest rates ranging up to 10% and mature in periods ranging from less than one year to approximately 30 years.


(f)	As of December 31, 2019, the undrawn availability under the 2016 Revolver was $4.5 billion.

(g)


(h)	The maturities of the Commercial Paper Notes, as defined below, when outstanding, may vary but may not exceed 397 days from the date of issue.


(i)	The weighted-average interest rate for the outstanding commercial paper under the CP Program, as defined below, was 2.1%.

Schedule of Maturities of Long-term Debt

Contractual Maturities



	Years Ending December 31,
	2020		2021		2022		2023		2024		Thereafter		Total Cash Obligations		Unamortized Adjustments, Net			Total Debt and Other Obligations Outstanding
Scheduled contractual maturities	$	253	$	1,675	$	1,000	$	3,604	$	3,172	$	8,531	$	18,235	$	(114	)	$	18,121

Schedule of Extinguishment of Debt

Debt Purchases and Redemptions

The following is a summary of the purchases and redemptions of debt during the years ended December 31, 2019, 2018 and 2017.



	Year Ended December 31, 2019
	Principal Amount		Cash Paid^(a)		Gains (losses)^(b)
Secured Notes, Series 2009-1, Class A-1	$	12	$	12	$	(1	)
2016 Term Loan A	—		—		(1		)
Total	$	12	$	12	$	(2	)


(a)	Exclusive of accrued interest.


(b)	Inclusive of the write-off of the respective deferred financing costs.



	Year Ended December 31, 2018
	Principal Amount		Cash Paid^(a)		Gains (losses)^(b)
Tower Revenue Notes, Series 2010-3	$	1,250	$	1,318	$	(71	)
2016 Term Loan A	—		—		(3		)
Tower Revenues Notes, Series 2010-6	1,000		1,028		(32		)
Total	$	2,250	$	2,346	$	(106	)


(a)	Exclusive of accrued interest.


(b)	Inclusive of the write-off of the respective deferred financing costs.



	Year Ended December 31, 2017
	Principal Amount		Cash Paid		Gains (losses)^(a)
2016 Term Loan A	$	—	$	—	$	(4	)
Total	$	—	$	—	$	(4	)

(a)

The losses represent write-off of deferred financing costs.

Fair Value Disclosures (Tables)

12 Months Ended

Dec. 31, 2019

Fair Value Disclosures [Abstract]

Estimated Fair Values and Carrying Amounts of Assets and Liabilities

The following table shows the estimated fair values of the Company's financial instruments, along with the carrying amounts of the related assets (liabilities). See also note 3.



	Level in Fair Value Hierarchy	December 31, 2019				December 31, 2018
	Level in Fair Value Hierarchy	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Assets:
Cash and cash equivalents	1	$	196	$	196	$	277	$	277
Restricted cash, current and non-current	1	142		142		136		136
Liabilities:
Total debt and other obligations	2	$	18,121	$	19,170	$	16,682	$	16,562

Income Taxes (Tables)

12 Months Ended

Dec. 31, 2019

Income (Loss) from Continuing Operations Before Income Taxes



	Years Ended December 31,
	2019		2018		2017
			(As Restated)
Domestic	$	850	$	618	$	372
Foreign^(a)	31		23		20
Total	$	881	$	641	$	392

(a)

Inclusive of income (loss) before income taxes from Puerto Rico.

Benefit (Provision) for Income Taxes

The benefit (provision) for income taxes consists of the following:



	Years Ended December 31,
	2019			2018			2017
Current:
Federal	$	(6	)	$	(5	)	$	(3	)
Foreign	(8		)	(7		)	(6		)
State	(5		)	(5		)	(2		)
Total current	(19		)	(17		)	(11		)
Deferred:
Federal	—			—			(18		)
Foreign	(2		)	(2		)	3
Total deferred	(2		)	(2		)	(15		)
Total tax benefit (provision)	$	(21	)	$	(19	)	$	(26	)

Effective Tax Rate

A reconciliation between the benefit (provision) for income taxes and the amount computed by applying the federal statutory income tax rate to the income (loss) before income taxes is as follows:



	Years Ended December 31,
	2019			2018			2017
				(As Restated)
Benefit (provision) for income taxes at statutory rate	$	(185	)	$	(135	)	$	(137	)
Tax effect of foreign income (losses)	1			1			—
Tax adjustment related to REIT operations	178			128			131
State tax (provision) benefit, net of federal	(5		)	(4		)	(2		)
Foreign tax	(10		)	(9		)	(3		)
Effects of tax law change^(a)	—			—			(15		)
Total	$	(21	)	$	(19	)	$	(26	)


(a)	Pursuant to the Tax Cuts and Jobs Act, which was signed into law in December 2017, the Company was required to write down its net federal deferred tax asset in the amount of $17 million as a result of the reduction in the federal corporate tax rate offset by a benefit of $2 million related to the refund of the Company's alternative minimum tax credit carryforward.

Components of Deferred Tax Assets and Liabilities

The components of the net deferred income tax assets and liabilities are as follows:



	December 31,
	2019		2018
Deferred income tax liabilities:
Property and equipment	$	6	$	5
Deferred site rental receivable	7		7
Total deferred income tax liabilities	13		12
Deferred income tax assets:
Intangible assets	3		4
Net operating loss carryforwards^(a)	18		18
Straight-line rent expense liability^(b)	3		2
Accrued liabilities	5		5
Other	2		3
Valuation allowances	—		(1		)
Total deferred income tax assets, net	31		31
Net deferred income tax asset (liabilities)	$	18	$	19


(a)	Balance results from the Company's foreign NOLs. Due to the Company's REIT status, no federal or state NOLs result in the Company recording a deferred income tax asset. See further discussion surrounding the Company's NOL balances below.

(b)

See "Recently Adopted Accounting Pronouncements" in note 3 for a discussion of the recently adopted new lease standard.

Jurisdictional Components of Deferred Tax Assets and Liabilities

The components of the net deferred income tax assets (liabilities) are as follows:



	December 31, 2019								December 31, 2018
Classification	Gross			Valuation Allowance		Net			Gross			Valuation Allowance			Net
Federal	$	25		$	—	$	25		$	25		$	—		$	25
State	1			—		1			1			—			1
Foreign	(8		)	—		(8		)	(6		)	(1		)	(7		)
Total	$	18		$	—	$	18		$	20		$	(1	)	$	19

Stockholders' Equity Stockholders Equity (Tables)

12 Months Ended

Dec. 31, 2019

Dividends Declared [Abstract]

Dividends Declared

During the year ended December 31, 2019, the following dividends were declared or paid:



Equity Type	Declaration Date	Record Date	Payment Date	Dividends Per Share		Aggregate Payment Amount (In millions)
Common Stock	February 21, 2019	March 15, 2019	March 29, 2019	$	1.125	$	471	^(a)
Common Stock	May 16, 2019	June 14, 2019	June 28, 2019	$	1.125	$	471	^(a)
Common Stock	August 8, 2019	September 13, 2019	September 30, 2019	$	1.125	$	472	^(a)
Common Stock	October 14, 2019	December 13, 2019	December 31, 2019	$	1.20	$	502	^(a)
6.875% Convertible Preferred Stock	December 11, 2018	January 15, 2019	February 1, 2019	$	17.1875	$	28
6.875% Convertible Preferred Stock	March 19, 2019	April 15, 2019	May 1, 2019	$	17.1875	$	28
6.875% Convertible Preferred Stock	June 17, 2019	July 15, 2019	August 1, 2019	$	17.1875	$	28
6.875% Convertible Preferred Stock	September 18, 2019	October 15, 2019	November 1, 2019	$	17.1875	$	28
6.875% Convertible Preferred Stock	December 9, 2019	January 15, 2020	February 3, 2020	$	17.1875	$	28


(a)	Inclusive of dividends accrued for holders of unvested RSUs, which will be paid when and if the RSUs vest.

Tax Treatment of Dividends Paid [Table Text Block]

The following table summarizes, for income tax purposes, the nature of dividends paid during 2019 on the Company's common stock and 6.875% Convertible Preferred Stock.



Equity Type	Payment Date	Cash Distribution (per share)		Ordinary Taxable Dividend (per share)		Qualified Taxable Dividend (per share)^(a)		Section 199A Dividend (per share)		Non-Taxable Distribution (per share)
Common Stock	March 29, 2019	$	1.125	$	0.824	$	0.007	$	0.817	$	0.301
Common Stock	June 28, 2019	$	1.125	$	0.824	$	0.007	$	0.817	$	0.301
Common Stock	September 30, 2019	$	1.125	$	0.824	$	0.007	$	0.817	$	0.301
Common Stock	December 31, 2019	$	1.20	$	0.879	$	0.008	$	0.871	$	0.321
6.875% Convertible Preferred Stock	February 1, 2019	$	17.1875	$	17.1875	$	0.1490	$	17.0385	$	—
6.875% Convertible Preferred Stock	May 1, 2019	$	17.1875	$	17.1875	$	0.1490	$	17.0385	$	—
6.875% Convertible Preferred Stock	August 1, 2019	$	17.1875	$	17.1875	$	0.1490	$	17.0385	$	—
6.875% Convertible Preferred Stock	November 1, 2019	$	17.1875	$	17.1875	$	0.1490	$	17.0385	$	—

(a)

Qualified taxable dividend and section 199A dividend amounts are included in ordinary taxable dividend amounts.

Stock-based Compensation (Tables)

12 Months Ended

Dec. 31, 2019

Share-based Payment Arrangement, Noncash Expense [Abstract]

Summary of Restricted Stock Awards Activity

The following is a summary of the RSU activity during the year ended December 31, 2019.



	RSUs
	(In millions)
Outstanding at the beginning of year	3
Granted	1
Vested	(1	)
Forfeited	—
Outstanding at end of year	3

Summary of the Assumptions Used in the Monte Carlo Simulation to Determine the Grant-Date Fair Value



	Years Ended December 31,
	2019		2018		2017
Risk-free rate	2.5	%	2.4	%	1.5	%
Expected volatility	18	%	18	%	18	%
Expected dividend rate	4.0	%	3.8	%	4.4	%

Summary of Restricted Stock Vested

The following table is a summary of the awards vested during the years ended December 31, 2019, 2018 and 2017.



Years Ended December 31,	Total Shares Vested	Fair Value on Vesting Date
	(In millions of shares)
2019	1	$	135
2018	1	107
2017	1	67

Stock Based Compensation Expense

The following table discloses the components of stock-based compensation expense.



	Years Ended December 31,
	2019		2018		2017
Stock-based compensation expense:
Site rental costs of operations	$	19	$	17	$	15
Services and other costs of operations	7		8		5
Selling, general and administrative expenses	90		83		76
Total stock-based compensation	$	116	$	108	$	96

Leases (Tables)

12 Months Ended

Dec. 31, 2019

Dec. 31, 2018

Lessee, Operating Lease, Liability, Maturity [Table Text Block]

The following table is a summary of the Company's maturities of operating lease liabilities as of December 31, 2019:



	Years Ending December 31,
	2020		2021		2022		2023		2024		Thereafter		Total undiscounted lease payments		Less: Imputed interest			Total operating lease liabilities
Operating leases^(a)	$	534	$	528	$	524	$	520	$	517	$	6,357	$	8,980	$	(3,170	)	$	5,810

(a)

Excludes the Company's contingent payments for operating leases (such as payments based on revenues derived from the communications infrastructure located on the leased asset) as such arrangements are excluded from the Company's operating lease liability. Such contingencies are recognized as expense in the period they are resolved.



	Years Ending December 31,
	2019		2020		2021		2022		2023		Thereafter		Total
Operating leases	$	640	$	631	$	628	$	623	$	619	$	8,054	$	11,195

Lease, Cost [Table Text Block]

The components of the Company's operating lease expense are as follows:



	Year Ended December 31,
	2019
Lease cost:
Operating lease expense^(a)	$	648
Variable lease expense^(b)	133
Total lease expense^(c)	$	781


(a)	Represents the Company's operating lease expense related to its ROU assets for the twelve months ended December 31, 2019.


(b)	Represents the Company's expense related to contingent payments for operating leases (such as payments based on revenues derived from the communications infrastructure located on the leased asset) for the twelve months ended December 31, 2019. Such contingencies are recognized as expense in the period they are resolved.

(c)

Excludes those direct operating expenses accounted for pursuant to accounting guidance outside the scope of ASC 842.

Operating Segments and Concentrations of Credit Risk (Tables)

12 Months Ended

Dec. 31, 2019

Dec. 31, 2018

Dec. 31, 2017

Schedule of Segment Reporting Information, by Segment [Table Text Block]



	Year Ended December 31, 2019
	Towers		Fiber		Other		Consolidated Total
Segment site rental revenues	$	3,389	$	1,704			$	5,093
Segment services and other revenues	653		17				670
Segment revenues	4,042		1,721				5,763
Segment site rental cost of operations	864		559				1,423
Segment services and other cost of operations	506		11				517
Segment cost of operations^(a)(b)	1,370		570				1,940
Segment site rental gross margin	2,525		1,145				3,670
Segment services and other gross margin	147		6				153
Segment selling, general and administrative expenses^(b)	96		195				291
Segment operating profit (loss)	2,576		956				3,532
Other selling, general and administrative expenses^(b)					$	233	233
Stock-based compensation expense					116		116
Depreciation, amortization and accretion					1,572		1,572
Interest expense and amortization of deferred financing costs					683		683
Other (income) expenses to reconcile to income (loss) before income taxes^(c)					47		47
Income (loss) before income taxes							$	881
Capital expenditures	$	543	$	1,473	$	41	$	2,057
Total assets (at year end)	$	22,357	$	15,389	$	711	$	38,457
Total goodwill (at year end)	$	5,127	$	4,951	$	—	$	10,078


(a)	Exclusive of depreciation, amortization and accretion shown separately


(b)	Segment cost of operations for the year ended December 31, 2019 excludes (1) stock-based compensation expense of $26 million and (2) prepaid lease purchase price adjustments of $20 million. For the year ended December 31, 2019, segment selling, general and administrative expenses exclude stock-based compensation expense of $90 million.

(c)

See consolidated statement of operations for further information.



	Year Ended December 31, 2018
	(As Restated)
	Towers		Fiber		Other		Consolidated Total
Segment site rental revenues	$	3,196	$	1,600			$	4,796
Segment services and other revenues	558		16				574
Segment revenues	3,754		1,616				5,370
Segment site rental cost of operations	848		525				1,373
Segment services and other cost of operations	415		11				426
Segment cost of operations^(a)(b)	1,263		536				1,799
Segment site rental gross margin	2,348		1,075				3,423
Segment services and other gross margin	143		5				148
Segment selling, general and administrative expenses^(b)	110		179				289
Segment operating profit (loss)	2,381		901				3,282
Other selling, general and administrative expenses^(b)					$	191	191
Stock-based compensation expense					108		108
Depreciation, amortization and accretion					1,527		1,527
Interest expense and amortization of deferred financing costs					642		642
Other (income) expenses to reconcile to income (loss) before income taxes^(c)					173		173
Income (loss) before income taxes							$	641
Capital expenditures	$	440	$	1,264	$	35	$	1,739
Total assets (at year end)	$	17,644	$	14,512	$	606	$	32,762
Total goodwill (at year end)	$	5,127	$	4,951	$	—	$	10,078


(a)	Exclusive of depreciation, amortization and accretion shown separately


(b)	Segment cost of operations for the year ended December 31, 2018 excludes (1) stock-based compensation expense of $25 million and (2) prepaid lease purchase price adjustments of $20 million. For the year ended December 31, 2018, segment selling, general and administrative expenses exclude stock-based compensation expense of $83 million.

(c)

See consolidated statement of operations for further information.



	Year Ended December 31, 2017
	(As Restated)
	Towers		Fiber		Other		Consolidated Total
Segment site rental revenues	$	2,965	$	769			$	3,734
Segment services and other revenues	471		50				521
Segment revenues	3,436		819				4,255
Segment site rental cost of operations	845		264				1,109
Segment services and other cost of operations	353		41				394
Segment cost of operations^(a)(b)	1,198		305				1,503
Segment site rental gross margin	2,120		505				2,625
Segment services and other gross margin	118		9				127
Segment selling, general and administrative expenses^(b)	94		89				183
Segment operating profit (loss)	2,144		425				2,569
Other selling, general and administrative expenses^(b)					$	167	167
Stock-based compensation expense					96		96
Depreciation, amortization and accretion					1,241		1,241
Interest expense and amortization of deferred financing costs					591		591
Other (income) expenses to reconcile to income (loss) before income taxes^(c)					82		82
Income (loss) before income taxes							$	392
Capital expenditures	$	407	$	782	$	28	$	1,217
Total assets (at year end)	$	17,918	$	13,669	$	619	$	32,206
Total goodwill (at year end)	$	5,127	$	4,894	$	—	$	10,021


(a)	Exclusive of depreciation, amortization and accretion shown separately


(b)	Segment cost of operations for the year ended December 31, 2017 excludes (1) stock-based compensation expense of $20 million and (2) prepaid lease purchase price adjustments of $20 million. For the year ended December 31, 2017, segment selling, general and administrative expenses exclude stock-based compensation expense of $76 million.

(c)

See consolidated statement of operations for further information.

A Summary of the Percentage of the Consolidated Revenues for Those Customers Accounting for More than 10% of the Consolidated Revenues



	Years Ended December 31,
	2019		2018		2017
			(As Restated)
T-Mobile	22	%	19	%	22	%
AT&T	21	%	20	%	25	%
Verizon Wireless	19	%	20	%	16	%
Sprint	14	%	15	%	23	%
Total	76	%	74	%	86	%

Supplemental Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2019

Supplemental Cash Flow Information [Abstract]

Schedule of Cash, Cash Equivalents and Restricted Cash [Table Text Block]



	As of December 31,
	2019		2018		2017
Cash and cash equivalents	$	196	$	277	$	314
Restricted cash, current	137		131		121
Restricted cash reported within long-term prepaid rent and other assets, net	5		5		5
Cash, cash equivalents and restricted cash	$	338	$	413	$	440

Supplemental Disclosure of Cash Flow Information and Non-cash Investing and Financing Activities

The following table is a summary of the supplemental cash flow information during the years ended December 31, 2019, 2018 and 2017.



	Years Ended December 31,
	2019		2018		2017
Supplemental disclosure of cash flow information:
Cash payments related to operating lease liabilities^(a)(b)	$	541	$	—	$	—
Interest paid	661		619		547
Income taxes paid	16		17		16
Supplemental disclosure of non-cash investing and financing activities:
New ROU assets obtained in exchange for operating lease liabilities^(b)	431		—		—
Increase in accounts payable for purchases of property and equipment	2		29		2
Purchase of property and equipment under finance leases and installment land purchases	33		40		32
Increase in preferred stock dividends accrued but not paid (see note 12)	—		—		28

Quarterly Financial Information (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2019

Selected Quarterly Financial Information [Abstract]

Schedule of Quarterly Financial Information (Unaudited)



	Three Months Ended^(a)
	December 31			September 30			June 30			March 31
				(As Restated)
2019:
Net revenues	$	1,426		$	1,482		$	1,447		$	1,408
Operating income (loss)	379			423			389			367
Gains (losses) on retirement of long-term obligations	—			—			(1		)	(1		)
Benefit (provision) for income taxes	(6		)	(5		)	(4		)	(6		)
Net income (loss) attributable to CCIC stockholders	208			242			216			193
Net income (loss) attributable to CCIC common stockholders, per common share:
Basic	$	0.43		$	0.51		$	0.45		$	0.40
Diluted	$	0.43		$	0.51		$	0.45		$	0.40

	Three Months Ended^(a)
	December 31			September 30			June 30			March 31
	(As Restated)
2018:
Net revenues	$	1,406		$	1,361		$	1,319		$	1,284
Operating income (loss)	367			346			335			335
Gains (losses) on retirement of long-term obligations	—			(32		)	(3		)	(71		)
Benefit (provision) for income taxes	(5		)	(5		)	(5		)	(4		)
Net income (loss) attributable to CCIC stockholders	201			151			170			100
Net income (loss) attributable to CCIC common stockholders, per common share:
Basic	$	0.42		$	0.30		$	0.34		$	0.18
Diluted	$	0.42		$	0.30		$	0.34		$	0.18


(a)	The sum of quarterly information may not agree to year-to-date information due to rounding.

Quarterly Financial Information Restatement of Balance Sheet (Tables)

3 Months Ended

6 Months Ended

9 Months Ended

12 Months Ended

Mar. 31, 2019

Mar. 31, 2018

Jun. 30, 2019

Jun. 30, 2018

Sep. 30, 2019

Sep. 30, 2018

Dec. 31, 2019

Dec. 31, 2018

Condensed Balance Sheet [Table Text Block]



	March 31, 2019
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
ASSETS
Property and equipment, net	$	13,883		$	—		$	(23	)	$	13,860
Total assets	37,778			—			(23		)	37,755
LIABILITIES AND EQUITY
Current liabilities:
Deferred revenues	502			96			—			598
Total current liabilities	1,565			96			—			1,661
Other long-term liabilities^(a)	2,009			360			—			2,369
Total liabilities	26,032			456			—			26,488
CCIC stockholders' equity:
Dividends/distributions in excess of earnings	(6,022		)	(456		)	(23		)	(6,501		)
Total equity	11,746			(456		)	(23		)	11,267
Total liabilities and equity	$	37,778		$	—		$	(23	)	$	37,755



	September 30, 2018
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
ASSETS
Property and equipment, net	$	13,433		$	—		$	(23	)	$	13,410
Total assets	32,644			—			(23		)	32,621
LIABILITIES AND EQUITY
Current liabilities:
Deferred revenues	484			84			—			568
Total current liabilities	1,304			84			—			1,388
Other long-term liabilities^(a)	2,732			342			—			3,074
Total liabilities	20,349			426			—			20,775
CCIC stockholders' equity:
Dividends/distributions in excess of earnings	(5,447		)	(426		)	(23		)	(5,896		)
Total equity	12,295			(426		)	(23		)	11,846
Total liabilities and equity	$	32,644		$	—		$	(23	)	$	32,621



	March 31, 2018
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
ASSETS
Property and equipment, net	$	13,051		$	—		$	(23	)	$	13,028
Total assets	32,250			—			(23		)	32,227
LIABILITIES AND EQUITY
Current liabilities:
Deferred revenues	465			74			—			539
Total current liabilities	1,187			74			—			1,261
Other long-term liabilities^(a)	2,615			331			—			2,946
Total liabilities	19,418			405			—			19,823
CCIC stockholders' equity:
Dividends/distributions in excess of earnings	(4,858		)	(405		)	(23		)	(5,286		)
Total equity	12,832			(405		)	(23		)	12,404
Total liabilities and equity	$	32,250		$	—		$	(23	)	$	32,227


(a)	See "Recently Adopted Accounting Pronouncements" in note 3 for a discussion of the recently adopted new lease standard.



	June 30, 2019
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
ASSETS
Property and equipment, net	$	14,151		$	—		$	(23	)	$	14,128
Total assets	38,147			—			(23		)	38,124
LIABILITIES AND EQUITY
Current liabilities:
Deferred revenues	503			104			—			607
Total current liabilities	1,698			104			—			1,802
Other long-term liabilities^(a)	2,028			383			—			2,411
Total liabilities	26,624			487			—			27,111
CCIC stockholders' equity:
Dividends/distributions in excess of earnings	(6,277		)	(487		)	(23		)	(6,787		)
Total equity	11,523			(487		)	(23		)	11,013
Total liabilities and equity	$	38,147		$	—		$	(23	)	$	38,124


(a)	See "Recently Adopted Accounting Pronouncements" in note 3 for a discussion of the recently adopted new lease standard.



	June 30, 2018
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
ASSETS
Property and equipment, net	$	13,218		$	—		$	(23	)	$	13,195
Total assets	32,374			—			(23		)	32,351
LIABILITIES AND EQUITY
Current liabilities:
Deferred revenues	476			78			—			554
Total current liabilities	1,286			78			—			1,364
Other long-term liabilities^(a)	2,678			336			—			3,014
Total liabilities	19,808			414			—			20,222
CCIC stockholders' equity:
Dividends/distributions in excess of earnings	(5,144		)	(414		)	(23		)	(5,581		)
Total equity	12,566			(414		)	(23		)	12,129
Total liabilities and equity	$	32,374		$	—		$	(23	)	$	32,351



	March 31, 2018
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
ASSETS
Property and equipment, net	$	13,051		$	—		$	(23	)	$	13,028
Total assets	32,250			—			(23		)	32,227
LIABILITIES AND EQUITY
Current liabilities:
Deferred revenues	465			74			—			539
Total current liabilities	1,187			74			—			1,261
Other long-term liabilities^(a)	2,615			331			—			2,946
Total liabilities	19,418			405			—			19,823
CCIC stockholders' equity:
Dividends/distributions in excess of earnings	(4,858		)	(405		)	(23		)	(5,286		)
Total equity	12,832			(405		)	(23		)	12,404
Total liabilities and equity	$	32,250		$	—		$	(23	)	$	32,227



	September 30, 2019
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
ASSETS
Property and equipment, net	$	14,416		$	—		$	(23	)	$	14,393
Total assets	38,344			—			(23		)	38,321
LIABILITIES AND EQUITY
Current liabilities:
Deferred revenues	525			113			—			638
Total current liabilities	1,734			113			—			1,847
Other long-term liabilities^(a)	2,055			403			—			2,458
Total liabilities	27,019			516			—			27,535
CCIC stockholders' equity:
Dividends/distributions in excess of earnings	(6,503		)	(516		)	(23		)	(7,042		)
Total equity	11,325			(516		)	(23		)	10,786
Total liabilities and equity	$	38,344		$	—		$	(23	)	$	38,321



	June 30, 2019
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
ASSETS
Property and equipment, net	$	14,151		$	—		$	(23	)	$	14,128
Total assets	38,147			—			(23		)	38,124
LIABILITIES AND EQUITY
Current liabilities:
Deferred revenues	503			104			—			607
Total current liabilities	1,698			104			—			1,802
Other long-term liabilities^(a)	2,028			383			—			2,411
Total liabilities	26,624			487			—			27,111
CCIC stockholders' equity:
Dividends/distributions in excess of earnings	(6,277		)	(487		)	(23		)	(6,787		)
Total equity	11,523			(487		)	(23		)	11,013
Total liabilities and equity	$	38,147		$	—		$	(23	)	$	38,124



	September 30, 2018
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
ASSETS
Property and equipment, net	$	13,433		$	—		$	(23	)	$	13,410
Total assets	32,644			—			(23		)	32,621
LIABILITIES AND EQUITY
Current liabilities:
Deferred revenues	484			84			—			568
Total current liabilities	1,304			84			—			1,388
Other long-term liabilities^(a)	2,732			342			—			3,074
Total liabilities	20,349			426			—			20,775
CCIC stockholders' equity:
Dividends/distributions in excess of earnings	(5,447		)	(426		)	(23		)	(5,896		)
Total equity	12,295			(426		)	(23		)	11,846
Total liabilities and equity	$	32,644		$	—		$	(23	)	$	32,621



	September 30, 2019			June 30, 2019			March 31, 2019
	(As Restated)
ASSETS
Current assets:
Cash and cash equivalents	$	182		$	288		$	245
Restricted cash	138			136			158
Receivables, net	667			591			545
Prepaid expenses^(a)	99			111			85
Other current assets	167			168			160
Total current assets	1,253			1,294			1,193
Deferred site rental receivables	1,413			1,391			1,373
Property and equipment, net	14,393			14,128			13,860
Operating lease right-of-use assets^(a)	6,112			6,053			5,969
Goodwill	10,078			10,078			10,078
Other intangible assets, net^(a)	4,968			5,074			5,178
Long-term prepaid rent and other assets, net^(a)	104			106			104
Total assets	$	38,321		$	38,124		$	37,755
LIABILITIES AND EQUITY
Current liabilities:
Accounts payable	$	368		$	337		$	311
Accrued interest	110			166			107
Deferred revenues	638			607			598
Other accrued liabilities^(a)	335			305			262
Current maturities of debt and other obligations	100			98			96
Current portion of operating lease liabilities^(a)	296			289			287
Total current liabilities	1,847			1,802			1,661
Debt and other long-term obligations	17,750			17,471			17,120
Operating lease liabilities^(a)	5,480			5,427			5,338
Other long-term liabilities^(a)	2,458			2,411			2,369
Total liabilities	27,535			27,111			26,488
Commitments and contingencies (see note 14)
CCIC stockholders' equity:
Common stock, $0.01 par value	4			4			4
6.875% Mandatory Convertible Preferred Stock, Series A, $0.01 par value	—			—			—
Additional paid-in capital	17,829			17,801			17,769
Accumulated other comprehensive income (loss)	(5		)	(5		)	(5		)
Dividends/distributions in excess of earnings	(7,042		)	(6,787		)	(6,501		)
Total equity	10,786			11,013			11,267
Total liabilities and equity	$	38,321		$	38,124		$	37,755


(a)	See "Recently Adopted Accounting Pronouncements" in note 3 for a discussion of the recently adopted new lease standard.

Consolidated Balance Sheet



	December 31, 2018
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
ASSETS
Property and equipment, net	$	13,676		$	—		$	(23	)	$	13,653
Total assets	32,785			—			(23		)	32,762
LIABILITIES AND EQUITY
Current liabilities:
Deferred revenues	498			89			—			587
Total current liabilities	1,417			89			—			1,506
Other long-term liabilities^(a)	2,759			351			—			3,110
Total liabilities	20,751			440			—			21,191
CCIC stockholders' equity:
Dividends/distributions in excess of earnings	(5,732		)	(440		)	(23		)	(6,195		)
Total equity	12,034			(440		)	(23		)	11,571
Total liabilities and equity	$	32,785		$	—		$	(23	)	$	32,762


(a)	See "Recently Adopted Accounting Pronouncements" in note 3 for a discussion of the recently adopted new lease standard.



	September 30, 2018			June 30, 2018			March 31, 2018
	(As Restated)
ASSETS
Current assets:
Cash and cash equivalents	$	323		$	206		$	220
Restricted cash	125			125			120
Receivables, net	471			455			402
Prepaid expenses^(a)	182			197			175
Other current assets	148			181			157
Total current assets	1,249			1,164			1,074
Deferred site rental receivables	1,357			1,303			1,304
Property and equipment, net	13,410			13,195			13,028
Goodwill	10,074			10,075			10,075
Other intangible assets, net^(a)	5,620			5,729			5,854
Long-term prepaid rent and other assets, net^(a)	911			885			892
Total assets	$	32,621		$	32,351		$	32,227
LIABILITIES AND EQUITY
Current liabilities:
Accounts payable	$	302		$	272		$	248
Accrued interest	101			154			104
Deferred revenues	568			554			539
Other accrued liabilities^(a)	306			272			240
Current maturities of debt and other obligations	111			112			130
Total current liabilities	1,388			1,364			1,261
Debt and other long-term obligations	16,313			15,844			15,616
Other long-term liabilities^(a)	3,074			3,014			2,946
Total liabilities	20,775			20,222			19,823
Commitments and contingencies (see note 14)
CCIC stockholders' equity:
Common stock, $0.01 par value	4			4			4
6.875% Mandatory Convertible Preferred Stock, Series A, $0.01 par value	—			—			—
Additional paid-in capital	17,743			17,711			17,690
Accumulated other comprehensive income (loss)	(5		)	(5		)	(4		)
Dividends/distributions in excess of earnings	(5,896		)	(5,581		)	(5,286		)
Total equity	11,846			12,129			12,404
Total liabilities and equity	$	32,621		$	32,351		$	32,227


(a)	See "Recently Adopted Accounting Pronouncements" in note 3 for a discussion of the recently adopted new lease standard.

Quarterly Financial Information Restatement of Statement of Operations (Tables)

3 Months Ended

6 Months Ended

9 Months Ended

12 Months Ended

Sep. 30, 2019

Jun. 30, 2019

Mar. 31, 2019

Dec. 31, 2018

Sep. 30, 2018

Jun. 30, 2018

Mar. 31, 2018

Jun. 30, 2019

Jun. 30, 2018

Sep. 30, 2019

Sep. 30, 2018

Dec. 31, 2019

Dec. 31, 2018

Dec. 31, 2017

Condensed Income Statement [Table Text Block]



	Three Months Ended September 30, 2019
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	1,260	$	27		$	—		$	1,287
Services and other	254		(57		)	(2		)	195
Net revenues	1,514		(30		)	(2		)	1,482
Operating expenses:
Costs of operations^(a):
Services and other	147		—			(1		)	146
Depreciation, amortization and accretion	389		—			(1		)	388
Total operating expenses	1,061		—			(2		)	1,059
Operating income (loss)	453		(30		)	—			423
Income (loss) before income taxes	277		(30		)	—			247
Net income (loss) attributable to CCIC stockholders	272		(30		)	—			242
Net income (loss) attributable to CCIC common stockholders	$	244	$	(30	)	$	—		$	214
Net income (loss)	$	272	$	(30	)	$	—		$	242
Comprehensive income (loss) attributable to CCIC stockholders	$	272	$	(30	)	$	—		$	242
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	0.59	$	(0.08	)	$	—		$	0.51
Net income (loss) attributable to CCIC common stockholders - diluted	$	0.58	$	(0.07	)	$	—		$	0.51



	Six Months Ended June 30, 2019
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	2,457	$	48		$	—		$	2,505
Services and other	447		(95		)	(2		)	350
Net revenues	2,904		(47		)	(2		)	2,855
Operating expenses:
Costs of operations^(a):
Services and other	263		—			(2		)	261
Total operating expenses	2,101		—			(2		)	2,099
Operating income (loss)	803		(47		)	—			756
Income (loss) before income taxes	466		(47		)	—			419
Net income (loss) attributable to CCIC stockholders	456		(47		)	—			409
Net income (loss) attributable to CCIC common stockholders	$	399	$	(47	)	$	—		$	352
Net income (loss)	$	456	$	(47	)	$	—		$	409
Comprehensive income (loss) attributable to CCIC stockholders	$	456	$	(47	)	$	—		$	409
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	0.96	$	(0.11	)	$	—		$	0.85
Net income (loss) attributable to CCIC common stockholders - diluted	$	0.95	$	(0.11	)	$	—		$	0.84



	Three Months Ended June 30, 2019
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	1,238	$	25		$	—		$	1,263
Services and other	240		(55		)	(1		)	184
Net revenues	1,478		(30		)	(1		)	1,447
Operating expenses:
Costs of operations^(a):
Services and other	138		—			(1		)	137
Total operating expenses	1,059		—			(1		)	1,058
Operating income (loss)	419		(30		)	—			389
Income (loss) before income taxes	250		(30		)	—			220
Net income (loss) attributable to CCIC stockholders	246		(30		)	—			216
Net income (loss) attributable to CCIC common stockholders	$	218	$	(30	)	$	—		$	188
Net income (loss)	$	246	$	(30	)	$	—		$	216
Comprehensive income (loss) attributable to CCIC stockholders	$	246	$	(30	)	$	—		$	216
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	0.52	$	(0.07	)	$	—		$	0.45
Net income (loss) attributable to CCIC common stockholders - diluted	$	0.52	$	(0.07	)	$	—		$	0.45



	Three Months Ended March 31, 2019
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	1,219	$	23		$	—		$	1,242
Services and other	207		(40		)	(1		)	166
Net revenues	1,426		(17		)	(1		)	1,408
Operating expenses:
Costs of operations^(a):
Services and other	125		—			(1		)	124
Total operating expenses	1,042		—			(1		)	1,041
Operating income (loss)	384		(17		)	—			367
Income (loss) before income taxes	216		(17		)	—			199
Net income (loss) attributable to CCIC stockholders	210		(17		)	—			193
Net income (loss) attributable to CCIC common stockholders	$	182	$	(17	)	$	—		$	165
Net income (loss)	$	210	$	(17	)	$	—		$	193
Comprehensive income (loss) attributable to CCIC stockholders	$	210	$	(17	)	$	—		$	193
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	0.44	$	(0.04	)	$	—		$	0.40
Net income (loss) attributable to CCIC common stockholders - diluted	$	0.44	$	(0.04	)	$	—		$	0.40



	Three Months Ended December 31, 2018
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	1,209	$	22		$	—		$	1,231
Services and other	210		(35		)	—			175
Net revenues	1,419		(13		)	—			1,406
Operating expenses:
Depreciation, amortization and accretion	390		—			(1		)	389
Total operating expenses	1,040		—			(1		)	1,039
Operating income (loss)	379		(13		)	1			367
Income (loss) before income taxes	218		(13		)	1			206
Net income (loss) attributable to CCIC stockholders	213		(13		)	1			201
Net income (loss) attributable to CCIC common stockholders	$	185	$	(13	)	$	1		$	173
Net income (loss)	$	213	$	(13	)	$	1		$	201
Comprehensive income (loss) attributable to CCIC stockholders	$	213	$	(13	)	$	1		$	201
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	0.45	$	(0.03	)	$	—		$	0.42
Net income (loss) attributable to CCIC common stockholders - diluted	$	0.44	$	(0.02	)	$	—		$	0.42



	Nine Months Ended September 30, 2018
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	3,507	$	58		$	—		$	3,565
Services and other	497		(93		)	(5		)	399
Net revenues	4,004		(35		)	(5		)	3,964
Operating expenses:
Costs of operations^(a):
Services and other	304		—			(3		)	301
Total operating expenses	2,953		—			(3		)	2,950
Operating income (loss)	1,051		(35		)	(2		)	1,014
Income (loss) before income taxes	471		(35		)	(2		)	434
Net income (loss) attributable to CCIC stockholders	458		(35		)	(2		)	421
Net income (loss) attributable to CCIC common stockholders	$	373	$	(35	)	$	(2	)	$	336
Net income (loss)	$	458	$	(35	)	$	(2	)	$	421
Comprehensive income (loss) attributable to CCIC stockholders	$	457	$	(35	)	$	(2	)	$	420
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	0.90	$	(0.09	)	$	—		$	0.81
Net income (loss) attributable to CCIC common stockholders - diluted	$	0.90	$	(0.09	)	$	—		$	0.81



	Three Months Ended September 30, 2018
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	1,184	$	21		$	—		$	1,205
Services and other	191		(33		)	(2		)	156
Net revenues	1,375		(12		)	(2		)	1,361
Operating expenses:
Costs of operations^(a):
Services and other	119		—			(1		)	118
Total operating expenses	1,016		—			(1		)	1,015
Operating income (loss)	359		(12		)	(1		)	346
Income (loss) before income taxes	169		(12		)	(1		)	156
Net income (loss) attributable to CCIC stockholders	164		(12		)	(1		)	151
Net income (loss) attributable to CCIC common stockholders	$	136	$	(12	)	$	(1	)	$	123
Net income (loss)	$	164	$	(12	)	$	(1	)	$	151
Comprehensive income (loss) attributable to CCIC stockholders	$	164	$	(12	)	$	(1	)	$	151
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	0.33	$	(0.03	)	$	—		$	0.30
Net income (loss) attributable to CCIC common stockholders - diluted	$	0.33	$	(0.03	)	$	—		$	0.30



	Six Months Ended June 30, 2018
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	2,323	$	37		$	—		$	2,360
Services and other	307		(60		)	(3		)	244
Net revenues	2,630		(23		)	(3		)	2,604
Operating expenses:
Costs of operations^(a):
Services and other	185		—			(2		)	183
Total operating expenses	1,936		—			(2		)	1,934
Operating income (loss)	694		(23		)	(1		)	670
Income (loss) before income taxes	303		(23		)	(1		)	279
Net income (loss) attributable to CCIC stockholders	294		(23		)	(1		)	270
Net income (loss) attributable to CCIC common stockholders	$	237	$	(23	)	$	(1	)	$	213
Net income (loss)	$	294	$	(23	)	$	(1	)	$	270
Comprehensive income (loss) attributable to CCIC stockholders	$	293	$	(23	)	$	(1	)	$	269
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	0.58	$	(0.06	)	$	—		$	0.52
Net income (loss) attributable to CCIC common stockholders - diluted	$	0.57	$	(0.05	)	$	—		$	0.52



	Three Months Ended March 31, 2018
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	1,153	$	18		$	—		$	1,171
Services and other	146		(32		)	(1		)	113
Net revenues	1,299		(14		)	(1		)	1,284
Operating expenses:
Costs of operations^(a):
Services and other	86		—			(1		)	85
Total operating expenses	950		—			(1		)	949
Operating income (loss)	349		(14		)	—			335
Income (loss) before income taxes	118		(14		)	—			104
Net income (loss) attributable to CCIC stockholders	114		(14		)	—			100
Net income (loss) attributable to CCIC common stockholders	$	86	$	(14	)	$	—		$	72
Net income (loss)	$	114	$	(14	)	$	—		$	100
Comprehensive income (loss) attributable to CCIC stockholders	$	114	$	(14	)	$	—		$	100
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	0.21	$	(0.03	)	$	—		$	0.18
Net income (loss) attributable to CCIC common stockholders - diluted	$	0.21	$	(0.03	)	$	—		$	0.18

(a)

Exclusive of depreciation, amortization and accretion shown se



	Six Months Ended June 30, 2019
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	2,457	$	48		$	—		$	2,505
Services and other	447		(95		)	(2		)	350
Net revenues	2,904		(47		)	(2		)	2,855
Operating expenses:
Costs of operations^(a):
Services and other	263		—			(2		)	261
Total operating expenses	2,101		—			(2		)	2,099
Operating income (loss)	803		(47		)	—			756
Income (loss) before income taxes	466		(47		)	—			419
Net income (loss) attributable to CCIC stockholders	456		(47		)	—			409
Net income (loss) attributable to CCIC common stockholders	$	399	$	(47	)	$	—		$	352
Net income (loss)	$	456	$	(47	)	$	—		$	409
Comprehensive income (loss) attributable to CCIC stockholders	$	456	$	(47	)	$	—		$	409
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	0.96	$	(0.11	)	$	—		$	0.85
Net income (loss) attributable to CCIC common stockholders - diluted	$	0.95	$	(0.11	)	$	—		$	0.84



	Six Months Ended June 30, 2018
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	2,323	$	37		$	—		$	2,360
Services and other	307		(60		)	(3		)	244
Net revenues	2,630		(23		)	(3		)	2,604
Operating expenses:
Costs of operations^(a):
Services and other	185		—			(2		)	183
Total operating expenses	1,936		—			(2		)	1,934
Operating income (loss)	694		(23		)	(1		)	670
Income (loss) before income taxes	303		(23		)	(1		)	279
Net income (loss) attributable to CCIC stockholders	294		(23		)	(1		)	270
Net income (loss) attributable to CCIC common stockholders	$	237	$	(23	)	$	(1	)	$	213
Net income (loss)	$	294	$	(23	)	$	(1	)	$	270
Comprehensive income (loss) attributable to CCIC stockholders	$	293	$	(23	)	$	(1	)	$	269
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	0.58	$	(0.06	)	$	—		$	0.52
Net income (loss) attributable to CCIC common stockholders - diluted	$	0.57	$	(0.05	)	$	—		$	0.52


(a)	Exclusive of depreciation, amortization and accretion shown separately.



	Nine Months Ended September 30, 2019
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	3,718	$	75		$	—		$	3,793
Services and other	700		(152		)	(4		)	544
Net revenues	4,418		(77		)	(4		)	4,337
Operating expenses:
Costs of operations^(a):
Services and other	410		—			(3		)	407
Depreciation, amortization and accretion	1,176		—			(1		)	1,175
Total operating expenses	3,161		—			(4		)	3,157
Operating income (loss)	1,257		(77		)	—			1,180
Income (loss) before income taxes	744		(77		)	—			667
Net income (loss) attributable to CCIC stockholders	729		(77		)	—			652
Net income (loss) attributable to CCIC common stockholders	$	644	$	(77	)	$	—		$	567
Net income (loss)	$	729	$	(77	)	$	—		$	652
Comprehensive income (loss) attributable to CCIC stockholders	$	729	$	(77	)	$	—		$	652
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	1.55	$	(0.19	)	$	—		$	1.36
Net income (loss) attributable to CCIC common stockholders - diluted	$	1.54	$	(0.18	)	$	—		$	1.36



	Nine Months Ended September 30, 2018
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	3,507	$	58		$	—		$	3,565
Services and other	497		(93		)	(5		)	399
Net revenues	4,004		(35		)	(5		)	3,964
Operating expenses:
Costs of operations^(a):
Services and other	304		—			(3		)	301
Total operating expenses	2,953		—			(3		)	2,950
Operating income (loss)	1,051		(35		)	(2		)	1,014
Income (loss) before income taxes	471		(35		)	(2		)	434
Net income (loss) attributable to CCIC stockholders	458		(35		)	(2		)	421
Net income (loss) attributable to CCIC common stockholders	$	373	$	(35	)	$	(2	)	$	336
Net income (loss)	$	458	$	(35	)	$	(2	)	$	421
Comprehensive income (loss) attributable to CCIC stockholders	$	457	$	(35	)	$	(2	)	$	420
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	0.90	$	(0.09	)	$	—		$	0.81
Net income (loss) attributable to CCIC common stockholders - diluted	$	0.90	$	(0.09	)	$	—		$	0.81



	September 30, 2019						June 30, 2019						March 31, 2019
	Three Months Ended			Nine Months Ended			Three Months Ended			Six Months Ended			Three Months Ended
	(As Restated)
Net revenues:
Site rental	$	1,287		$	3,793		$	1,263		$	2,505		$	1,242
Services and other	195			544			184			350			166
Net revenues	1,482			4,337			1,447			2,855			1,408
Operating expenses:
Costs of operations^(a):
Site rental	369			1,095			365			726			361
Services and other	146			407			137			261			124
Selling, general and administrative	150			457			155			307			152
Asset write-down charges	2			13			6			12			6
Acquisition and integration costs	4			10			2			6			4
Depreciation, amortization and accretion	388			1,175			393			787			394
Total operating expenses	1,059			3,157			1,058			2,099			1,041
Operating income (loss)	423			1,180			389			756			367
Interest expense and amortization of deferred financing costs	(173		)	(510		)	(169		)	(337		)	(168		)
Gains (losses) on retirement of long-term obligations	—			(2		)	(1		)	(2		)	(1		)
Interest income	2			5			1			3			2
Other income (expense)	(5		)	(6		)	—			(1		)	(1		)
Income (loss) before income taxes	247			667			220			419			199
Benefit (provision) for income taxes	(5		)	(15		)	(4		)	(10		)	(6		)
Net income (loss) attributable to CCIC stockholders	242			652			216			409			193
Dividends/distributions on preferred stock	(28		)	(85		)	(28		)	(57		)	(28		)
Net income (loss) attributable to CCIC common stockholders	214			567			188			352			165
Net income (loss)	242			652			216			409			193
Other comprehensive income (loss):
Foreign currency translation adjustments	—			—			—			—			—
Total other comprehensive income (loss)	—			—			—			—			—
Comprehensive income (loss) attributable to CCIC stockholders	$	242		$	652		$	216		$	409		$	193
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	0.51		$	1.36		$	0.45		$	0.85		$	0.40
Net income (loss) attributable to CCIC common stockholders - diluted	$	0.51		$	1.36		$	0.45		$	0.84		$	0.40
Weighted-average common shares outstanding:
Basic	416			416			416			415			415
Diluted	418			418			418			417			417


(a)	Exclusive of depreciation, amortization and accretion shown separately.



	Year Ended December 31, 2018
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	4,716	$	80		$	—		$	4,796
Services and other	707		(128		)	(5		)	574
Net revenues	5,423		(48		)	(5		)	5,370
Operating expenses:
Costs of operations^(a):
Services and other	437		—			(3		)	434
Depreciation, amortization and accretion	1,528		—			(1		)	1,527
Total operating expenses	3,991		—			(4		)	3,987
Operating income (loss)	1,432		(48		)	(1		)	1,383
Income (loss) before income taxes	690		(48		)	(1		)	641
Net income (loss) attributable to CCIC stockholders	671		(48		)	(1		)	622
Net income (loss) attributable to CCIC common stockholders	$	558	$	(48	)	$	(1	)	$	509
Net income (loss)	$	671	$	(48	)	$	(1	)	$	622
Comprehensive income (loss) attributable to CCIC stockholders	$	670	$	(48	)	$	(1	)	$	621
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	1.35	$	(0.12	)	$	—		$	1.23
Net income (loss) attributable to CCIC common stockholders - diluted	$	1.34	$	(0.11	)	$	—		$	1.23



	December 31, 2018			September 30, 2018						June 30, 2018						March 31, 2018
	Three Months Ended			Three Months Ended			Nine Months Ended			Three Months Ended			Six Months Ended			Three Months Ended
	(As Restated)
Net revenues:
Site rental	$	1,231		$	1,205		$	3,565		$	1,188		$	2,360		$	1,171
Services and other	175			156			399			131			244			113
Net revenues	1,406			1,361			3,964			1,319			2,604			1,284
Operating expenses:
Costs of operations^(a):
Site rental	353			355			1,057			355			702			347
Services and other	135			118			301			98			183			85
Selling, general and administrative	145			145			418			138			273			134
Asset write-down charges	8			8			18			6			9			3
Acquisition and integration costs	9			4			18			8			14			6
Depreciation, amortization and accretion	389			385			1,138			379			753			374
Total operating expenses	1,039			1,015			2,950			984			1,934			949
Operating income (loss)	367			346			1,014			335			670			335
Interest expense and amortization of deferred financing costs	(164		)	(160		)	(478		)	(158		)	(318		)	(160		)
Gains (losses) on retirement of long-term obligations	—			(32		)	(106		)	(3		)	(74		)	(71		)
Interest income	2			1			4			1			2			1
Other income (expense)	1			1			—			—			(1		)	(1		)
Income (loss) before income taxes	206			156			434			175			279			104
Benefit (provision) for income taxes	(5		)	(5		)	(13		)	(5		)	(9		)	(4		)
Net income (loss) attributable to CCIC stockholders	201			151			421			170			270			100
Dividends/distributions on preferred stock	(28		)	(28		)	(85		)	(28		)	(57		)	(28		)
Net income (loss) attributable to CCIC common stockholders	173			123			336			142			213			72
Net income (loss)	201			151			421			170			270			100
Other comprehensive income (loss):
Foreign currency translation adjustments	—			—			(1		)	(1		)	(1		)	—
Total other comprehensive income (loss)	—			—			(1		)	(1		)	(1		)	—
Comprehensive income (loss) attributable to CCIC stockholders	$	201		$	151		$	420		$	169		$	269		$	100
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	0.42		$	0.30		$	0.81		$	0.34		$	0.52		$	0.18
Net income (loss) attributable to CCIC common stockholders - diluted	$	0.42		$	0.30		$	0.81		$	0.34		$	0.52		$	0.18
Weighted-average common shares outstanding:
Basic	415			415			413			415			412			409
Diluted	417			416			414			416			413			410

(a)

Exclusive of depreciation, amortization and accretion shown separately.



	Year Ended December 31, 2017
	As Reported		Restatement Adjustments			Other Adjustments			As Restated
Net revenues:
Site rental	$	3,669	$	65		$	—		$	3,734
Services and other	687		(124		)	(42		)	521
Net revenues	4,356		(59		)	(42		)	4,255
Operating expenses:
Costs of operations^(a):
Services and other	420		—			(21		)	399
Depreciation, amortization and accretion	1,242		—			(1		)	1,241
Total operating expenses	3,310		—			(22		)	3,288
Operating income (loss)	1,046		(59		)	(20		)	967
Income (loss) before income taxes	471		(59		)	(20		)	392
Net income (loss) attributable to CCIC stockholders	445		(59		)	(20		)	366
Net income (loss) attributable to CCIC common stockholders	$	387	$	(59	)	$	(20	)	$	308
Net income (loss)	$	445	$	(59	)	$	(20	)	$	366
Comprehensive income (loss) attributable to CCIC stockholders	$	447	$	(59	)	$	(20	)	$	368
Net income (loss) attributable to CCIC common stockholders, per common share:
Net income (loss) attributable to CCIC common stockholders - basic	$	1.01	$	(0.16	)	$	(0.05	)	$	0.80
Net income (loss) attributable to CCIC common stockholders - diluted	$	1.01	$	(0.16	)	$	(0.05	)	$	0.80

(a)

Exclusive of depreciation, amortization and accretion shown separately.

Quarterly Financial Information Restatement of Statement of Cash Flows (Tables)

3 Months Ended

6 Months Ended

9 Months Ended

12 Months Ended

Mar. 31, 2019

Mar. 31, 2018

Jun. 30, 2019

Jun. 30, 2018

Sep. 30, 2019

Sep. 30, 2018

Dec. 31, 2019

Dec. 31, 2018

Dec. 31, 2017

Condensed Cash Flow Statement [Table Text Block]



	Six Months Ended June 30, 2019
	As Reported		Restatement Adjustments			Other Adjustments		As Restated
Cash flows from operating activities:
Net income (loss)	$	456	$	(47	)	$	—	$	409
Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:
Increase (decrease) in other liabilities	30		47			—		77
Net cash provided by (used for) operating activities	1,227		—			—		1,227
Net increase (decrease) in cash, cash equivalents, and restricted cash	16		—			—		16
Cash, cash equivalents, and restricted cash at beginning of period	413		—			—		413
Cash, cash equivalents, and restricted cash at end of period	$	429	$	—		$	—	$	429



	Nine Months Ended September 30, 2019
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
Cash flows from operating activities:
Net income (loss)	$	729		$	(77	)	$	—		$	652
Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:
Depreciation, amortization and accretion	1,176			—			(1		)	1,175
Increase (decrease) in other liabilities	102			77			—			179
Net cash provided by (used for) operating activities	1,891			—			(1		)	1,890
Cash flows from investing activities:
Capital expenditures	(1,538		)	—			1			(1,537		)
Net cash provided by (used for) investing activities	(1,550		)	—			1			(1,549		)
Net increase (decrease) in cash, cash equivalents, and restricted cash	(88		)	—			—			(88		)
Cash, cash equivalents, and restricted cash at beginning of period	413			—			—			413
Cash, cash equivalents, and restricted cash at end of period	$	325		$	—		$	—		$	325

Flows



	September 30, 2019			June 30, 2019			March 31, 2019
	Nine Months Ended			Six Months Ended			Three Months Ended
	(As Restated)
Cash flows from operating activities:
Net income (loss)	$	652		$	409		$	193
Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:
Depreciation, amortization and accretion	1,175			787			394
(Gains) losses on retirement of long-term obligations	2			2			1
Amortization of deferred financing costs and other non-cash interest	1			1			1
Stock-based compensation expense	91			62			29
Asset write-down charges	13			12			6
Deferred income tax (benefit) provision	2			1			1
Other non-cash adjustments, net	4			3			2
Changes in assets and liabilities, excluding the effects of acquisitions:
Increase (decrease) in accrued interest	(38		)	18			(41		)
Increase (decrease) in accounts payable	37			6			(5		)
Increase (decrease) in other liabilities	179			77			(7		)
Decrease (increase) in receivables	(166		)	(89		)	(43		)
Decrease (increase) in other assets	(62		)	(62		)	(19		)
Net cash provided by (used for) operating activities	1,890			1,227			512
Cash flows from investing activities:
Capital expenditures	(1,537		)	(998		)	(480		)
Payments for acquisitions, net of cash acquired	(15		)	(13		)	(10		)
Other investing activities, net	3			1			1
Net cash provided by (used for) investing activities	(1,549		)	(1,010		)	(489		)
Cash flows from financing activities:
Proceeds from issuance of long-term debt	1,895			995			996
Principal payments on debt and other long-term obligations	(59		)	(36		)	(25		)
Purchases and redemptions of long-term debt	(12		)	(12		)	(12		)
Borrowings under revolving credit facility	1,585			1,195			710
Payments under revolving credit facility	(2,270		)	(1,785		)	(1,140		)
Net issuances (repayments) under commercial paper program	—			500			—
Payments for financing costs	(24		)	(14		)	(10		)
Purchases of common stock	(44		)	(43		)	(42		)
Dividends/distributions paid on common stock	(1,415		)	(944		)	(477		)
Dividends/distributions paid on preferred stock	(85		)	(57		)	(28		)
Net cash provided by (used for) financing activities	(429		)	(201		)	(28		)
Net increase (decrease) in cash, cash equivalents, and restricted cash	(88		)	16			(5		)
Effect of exchange rate changes on cash	—			—			—
Cash, cash equivalents, and restricted cash at beginning of period	413			413			413
Cash, cash equivalents, and restricted cash at end of period	325			429			408



	September 30, 2018			June 30, 2018			March 31, 2018
	Nine Months Ended			Six Months Ended			Three Months Ended
	(As Restated)
Cash flows from operating activities:
Net income (loss)	$	421		$	270		$	100
Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:
Depreciation, amortization and accretion	1,138			753			374
(Gains) losses on retirement of long-term obligations	106			74			71
Amortization of deferred financing costs and other non-cash interest	5			4			2
Stock-based compensation expense	79			47			23
Asset write-down charges	18			9			3
Deferred income tax (benefit) provision	2			1			1
Other non-cash adjustments, net	2			1			2
Changes in assets and liabilities, excluding the effects of acquisitions:
Increase (decrease) in accrued interest	(31		)	22			(28		)
Increase (decrease) in accounts payable	31			3			(5		)
Increase (decrease) in other liabilities	179			76			(43		)
Decrease (increase) in receivables	(74		)	(59		)	(5		)
Decrease (increase) in other assets	(103		)	(91		)	(43		)
Net cash provided by (used for) operating activities	1,773			1,110			452
Cash flows from investing activities:
Capital expenditures	(1,239		)	(762		)	(370		)
Payments for acquisitions, net of cash acquired	(26		)	(18		)	(14		)
Other investing activities, net	(14		)	3			—
Net cash provided by (used for) investing activities	(1,279		)	(777		)	(384		)
Cash flows from financing activities:
Proceeds from issuance of long-term debt	2,743			1,743			1,743
Principal payments on debt and other long-term obligations	(76		)	(47		)	(32		)
Purchases and redemptions of long-term debt	(2,346		)	(1,318		)	(1,318		)
Borrowings under revolving credit facility	1,290			485			170
Payments under revolving credit facility	(1,465		)	(1,150		)	(1,050		)
Payments for financing costs	(33		)	(20		)	(15		)
Net proceeds from issuance of common stock	841			841			843
Purchases of common stock	(34		)	(34		)	(33		)
Dividends/distributions paid on common stock	(1,315		)	(879		)	(443		)
Dividends/distributions paid on preferred stock	(85		)	(57		)	(28		)
Net cash provided by (used for) financing activities	(480		)	(436		)	(163		)
Net increase (decrease) in cash, cash equivalents, and restricted cash	14			(103		)	(95		)
Effect of exchange rate changes on cash	(1		)	(1		)	—
Cash, cash equivalents, and restricted cash at beginning of period	440			440			440
Cash, cash equivalents, and restricted cash at end of period	453			336			345

rately.

Consolidated Statement of Cas

Consolidated Statement of Cash Flows



	Year Ended December 31, 2018
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
Cash flows from operating activities:
Net income (loss)	$	671		$	(48	)	$	(1	)	$	622
Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:
Depreciation, amortization and accretion	1,528			—			(1		)	1,527
Increase (decrease) in other liabilities	223			48			—			271
Net cash provided by (used for) operating activities	2,502			—			(2		)	2,500
Cash flows from investing activities:
Capital expenditures	(1,741		)	—			2			(1,739		)
Net cash provided by (used for) investing activities	(1,795		)	—			2			(1,793		)
Net increase (decrease) in cash, cash equivalents, and restricted cash	(26		)	—			—			(26		)
Cash, cash equivalents, and restricted cash at beginning of period	440			—			—			440
Cash, cash equivalents, and restricted cash at end of period	$	413		$	—		$	—		$	413



	Year Ended December 31, 2017
	As Reported			Restatement Adjustments			Other Adjustments			As Restated
Cash flows from operating activities:
Net income (loss)	$	445		$	(59	)	$	(20	)	$	366
Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:
Depreciation, amortization and accretion	1,242			—			(1		)	1,241
Increase (decrease) in other liabilities	175			59			—			234
Decrease (increase) in receivables	61			—			10			71
Net cash provided by (used for) operating activities	2,043			—			(11		)	2,032
Cash flows from investing activities:
Capital expenditures	(1,228		)	—			11			(1,217		)
Net cash provided by (used for) investing activities	(10,493		)	—			11			(10,482		)
Net increase (decrease) in cash, cash equivalents, and restricted cash	(258		)	—			—			(258		)
Cash, cash equivalents, and restricted cash at beginning of period	697			—			—			697
Cash, cash equivalents, and restricted cash at end of period	$	440		$	—		$	—		$	440

Schedule II - Valuation and Qualifying Accounts Allowance for Doubtful Accounts (Tables)

12 Months Ended

Dec. 31, 2019

SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]

Schedule II - Valuation and Qualifying Accounts Disclosure [Text Block]



			Additions		Deductions
	Balance at Beginning of Year		Charged to Operations		Credited to Operations		Written Off			Effect of Exchange Rate Changes		Other Adjustments			Balance at End of Year
Allowance for Doubtful Accounts Receivable:
2019	$	14	$	7	$	—	$	(3	)	$	—	$	—		$	18
2018	$	14	$	4	$	—	$	(4	)	$	—	$	—		$	14
2017	$	11	$	4	$	—	$	(5	)	$	—	$	4	^(a)	$	14


(a)	Represents the allowance for doubtful accounts reflected in the final purchase price allocations for the 2017 Acquisitions. See note 4.



			Additions				Deductions
	Balance at Beginning of Year		Charged to Operations		Charged to Additional Paid-in Capital and Other Comprehensive Income		Credited to Operations			Credited to Additional Paid-in Capital and Other Comprehensive Income		Other Adjustments^(a)		Balance at End of Year
Deferred Tax Valuation Allowance:
2019	$	1	$	—	$	—	$	(1	)	$	—	$	—	$	—
2018	$	1	$	—	$	—	$	—		$	—	$	—	$	1
2017	$	7	$	—	$	—	$	(6	)	$	—	$	—	$	1

(a)

Inclusive of the effects of acquisitions.

Schedule III - Schedule of Real Estate and Depreciation Schedule of Real Estate and Accumulated Depreciation (Tables)

12 Months Ended

Dec. 31, 2019

SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]

SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation Disclosure [Text Block]

Description

Encumbrances

Initial Cost to Company

Cost Capitalized Subsequent to Acquisition

Gross Amount Carried at Close of Current Period

Accumulated Depreciation at Close of Current Period

Date of Construction

Date Acquired

Life on Which Depreciation in Latest Income Statement is Computed

Communications infrastructure^(a)

3,293

^(b)

^(c)

23,854

(9,382

)

Various

Up to 20 years


(a)	Includes approximately 40,000 towers and 80,000 route miles of fiber. No single asset exceeds 5% of the aggregate gross amounts at which the assets were carried at the close of the period set forth in the table above.

(b)


(c)	The Company has omitted this information, as it would be impracticable to compile such information on an asset-by-asset basis.



	2019			2018
				(As Restated)^(a)
Gross amount at beginning	$	21,840		$	20,086
Additions during period:
Acquisitions through foreclosure	—			—
Other acquisitions^(b)	4			5
Communications infrastructure construction and improvements	1,878			1,565
Purchase of land interests	53			56
Sustaining capital expenditures	84			85
Other^(c)	101			64
Total additions	2,120			1,775
Deductions during period:
Cost of real estate sold or disposed	(45		)	(21		)
Other	(61		)	—
Total deductions	(106		)	(21		)
Balance at end	$	23,854		$	21,840


(a)	See note 2 to the Company's consolidated financial statements for further information regarding the restatement.


(b)	Includes acquisitions of communications infrastructure.


(c)	Predominately relates to the purchase of property and equipment under finance leases and installment land purchases.



	2019			2018
				(As Restated)^(a)
Gross amount of accumulated depreciation at beginning	$	(8,338	)	$	(7,301	)
Additions during period:
Depreciation	(1,087		)	(1,056		)
Total additions	(1,087		)	(1,056		)
Deductions during period:
Amount for assets sold or disposed	24			18
Other	19			1
Total deductions	43			19
Balance at end	$	(9,382	)	$	(8,338	)

(a)

See note 2 to the Company's consolidated financial statements for further information regarding the restatement.

Basis of Presentation (Details) $ in Millions	12 Months Ended
Basis of Presentation (Details) $ in Millions	Dec. 31, 2019 USD ($)
Ground Lease Agreement Initial Term	five years
Subject to Capital Lease with Sprint, TMO, or AT&T [Member]
Tower count as a percentage of total towers	53.00%
Leased or Operated Under Sprint Agreement [Member]
Ground Lease Agreement Initial Term	32 years
Purchase Option Price	$ 2,300
Tower count as a percentage of total towers	16.00%
Leased or Operated Under T-Mobile Agreement [Member]
Ground Lease Agreement Initial Term	28 years
Tower count as a percentage of total towers	15.00%
T-Mobile [Member]
Purchase Option Price	$ 2,000
AT&T lease or sublease in accordance with TMO Agreement [Member]
Purchase Option Price	$ 405
Tower count as a percentage of total towers	1.00%
AT&T Prior to 2025 in accordance with TMO agreement [Member]
Purchase Option Price	$ 10
AT&T [Member]
Ground Lease Agreement Initial Term	28 years
Purchase Option Price	$ 4,200
Tower count as a percentage of total towers	22.00%

Restatement of Previously Issued Consolidated Financial Statements Restatement of Balance Sheet (Details) - USD ($)
$ in Millions

Dec. 31, 2019

Sep. 30, 2019

Jun. 30, 2019

Mar. 31, 2019

Dec. 31, 2018

Sep. 30, 2018

Jun. 30, 2018

Mar. 31, 2018

Dec. 31, 2017

Dec. 31, 2016

$ 14,666

$ 14,393

$ 14,128

$ 13,860

$ 13,653

$ 13,410

$ 13,195

$ 13,028

38,457

38,321

38,124

37,755

32,762

32,621

32,351

32,227

657

638

607

598

587

568

554

539

1,920

1,847

1,802

1,661

1,506

1,388

1,364

1,261

^[1]

2,516

2,458

2,411

2,369

3,110

3,074

3,014

2,946

27,968

27,535

27,111

26,488

21,191

20,775

20,222

19,823

(7,365)

(7,042)

(6,787)

(6,501)

(6,195)

(5,896)

(5,581)

(5,286)

$ (4,919)

$ (3,714)

10,489

10,786

11,013

11,267

11,571

11,846

12,129

12,404

11,925

7,222

$ 38,457

38,321

38,124

37,755

32,762

32,621

32,351

32,227

14,416

14,151

13,883

13,676

13,433

13,218

13,051

38,344

38,147

37,778

32,785

32,644

32,374

32,250

525

503

502

498

484

476

465

1,734

1,698

1,565

1,417

1,304

1,286

1,187

^[1]

2,055

2,028

2,009

2,759

2,732

2,678

2,615

27,019

26,624

26,032

20,751

20,349

19,808

19,418

(6,503)

(6,277)

(6,022)

(5,732)

(5,447)

(5,144)

(4,858)

(4,505)

(3,379)

11,325

11,523

11,746

12,034

12,295

12,566

12,832

12,339

7,557

38,344

38,147

37,778

32,785

32,644

32,374

32,250

113

104

113

104

^[1]

403

383

360

351

342

336

331

516

487

456

440

426

414

405

(516)

(487)

(456)

(440)

(426)

(414)

(405)

(391)

(332)

(516)

(487)

(456)

(440)

(426)

(414)

(405)

(391)

(332)

(23)

(23)

^[1]

(23)

(3)

(23)

$ (23)

$ (3)

$ (23)

[1]	See "Recently Adopted Accounting Pronouncements" in note 3 to the consolidated financial statements for a discussion of the recently adopted new lease standard.

Restatement of Previously Issued Consolidated Financial Statements Restatement of Statement of Operations (Details) - USD ($)
$ / shares in Units, $ in Millions

3 Months Ended

6 Months Ended

9 Months Ended

12 Months Ended

Dec. 31, 2019

^[1]

Sep. 30, 2019

Jun. 30, 2019

Mar. 31, 2019

Dec. 31, 2018

Sep. 30, 2018

Jun. 30, 2018

Mar. 31, 2018

Jun. 30, 2019

Jun. 30, 2018

Sep. 30, 2019

Sep. 30, 2018

Dec. 31, 2019

Dec. 31, 2018

Dec. 31, 2017

$ 1,287

$ 1,263

$ 1,242

$ 1,231

$ 1,205

$ 1,188

$ 1,171

$ 2,505

$ 2,360

$ 3,793

$ 3,565

$ 5,093

$ 4,796

$ 3,734

195

184

166

175

156

131

113

350

244

544

399

670

574

521

$ 1,426

1,482

^[1]

1,447

^[1]

1,408

^[1]

1,406

^[1]

1,361

^[1]

1,319

^[1]

1,284

^[1]

2,855

2,604

4,337

3,964

5,763

5,370

4,255

146

137

124

135

^[2]

118

^[2]

261

183

^[2]

407

301

^[2]

524

^[2]

434

^[2]

399

^[2]

388

393

394

389

385

379

374

787

753

1,175

1,138

1,572

1,527

1,241

1,059

1,058

1,041

1,039

1,015

984

949

2,099

1,934

3,157

2,950

4,204

3,987

3,288

$ 379

423

^[1]

389

^[1]

367

^[1]

367

^[1]

346

^[1]

335

^[1]

335

^[1]

756

670

1,180

1,014

1,559

1,383

967

247

220

199

206

156

175

104

419

279

667

434

881

641

392

Net Income (Loss) Available to Common Stockholders, Basic

242

^[1]

216

^[1]

193

^[1]

201

^[1]

151

^[1]

170

^[1]

100

^[1]

409

270

652

421

860

622

366

214

188

165

173

123

142

352

213

567

336

747

509

308

Comprehensive Income (Loss), Net of Tax, Attributable to Parent

$ 242

$ 216

$ 193

$ 201

$ 151

$ 169

$ 100

$ 409

$ 269

$ 652

$ 420

$ 860

$ 621

$ 368

$ 0.43

$ 0.51

^[1]

$ 0.45

^[1]

$ 0.40

^[1]

$ 0.42

^[1]

$ 0.30

^[1]

$ 0.34

^[1]

$ 0.18

^[1]

$ 0.85

$ 0.52

$ 1.36

$ 0.81

$ 1.80

$ 1.23

$ 0.80

$ 0.43

$ 0.51

^[1]

$ 0.45

^[1]

$ 0.40

^[1]

$ 0.42

^[1]

$ 0.30

^[1]

$ 0.34

^[1]

$ 0.18

^[1]

$ 0.84

$ 0.52

$ 1.36

$ 0.81

$ 1.79

$ 1.23

$ 0.80

$ 1,260

$ 1,238

$ 1,219

$ 1,209

$ 1,184

$ 1,169

$ 1,153

$ 2,457

$ 2,323

$ 3,718

$ 3,507

$ 4,716

$ 3,669

254

240

207

210

191

161

146

447

307

700

497

707

687

1,514

1,478

1,426

1,419

1,375

1,330

1,299

2,904

2,630

4,418

4,004

5,423

4,356

147

138

125

119

^[2]

263

185

^[2]

410

304

^[2]

437

420

389

390

1,176

1,528

1,242

1,061

1,059

1,042

1,040

1,016

985

950

2,101

1,936

3,161

2,953

3,991

3,310

453

419

384

379

359

345

349

803

694

1,257

1,051

1,432

1,046

277

250

216

218

169

185

118

466

303

744

471

690

471

Net Income (Loss) Available to Common Stockholders, Basic

272

246

210

213

164

180

114

456

294

729

458

671

445

244

218

182

185

136

152

399

237

644

373

558

387

Comprehensive Income (Loss), Net of Tax, Attributable to Parent

$ 272

$ 246

$ 210

$ 213

$ 164

$ 179

$ 114

$ 456

$ 293

$ 729

$ 457

$ 670

$ 447

$ 0.59

$ 0.52

$ 0.44

$ 0.45

$ 0.33

$ 0.37

$ 0.21

$ 0.96

$ 0.58

$ 1.55

$ 0.90

$ 1.35

$ 1.01

$ 0.58

$ 0.52

$ 0.44

$ 0.33

$ 0.36

$ 0.21

$ 0.95

$ 0.57

$ 1.54

$ 0.90

$ 1.34

$ 1.01

$ 27

$ 25

$ 23

$ 22

$ 21

$ 19

$ 18

$ 48

$ 37

$ 75

$ 58

$ 80

$ 65

(57)

(55)

(40)

(35)

(33)

(28)

(32)

(95)

(60)

(152)

(93)

(128)

(124)

(30)

(17)

(13)

(12)

(9)

(14)

(47)

(23)

(77)

(35)

(48)

(59)

^[2]

(30)

(17)

(13)

(12)

(9)

(14)

(47)

(23)

(77)

(35)

(48)

(59)

(30)

(17)

(13)

(12)

(9)

(14)

(47)

(23)

(77)

(35)

(48)

(59)

Net Income (Loss) Available to Common Stockholders, Basic

(30)

(17)

(13)

(12)

(9)

(14)

(47)

(23)

(77)

(35)

(48)

(59)

(30)

(17)

(13)

(12)

(9)

(14)

(47)

(23)

(77)

(35)

(48)

(59)

Comprehensive Income (Loss), Net of Tax, Attributable to Parent

$ (30)

$ (17)

$ (13)

$ (12)

$ (9)

$ (14)

$ (47)

$ (23)

$ (77)

$ (35)

$ (48)

$ (59)

$ (0.08)

$ (0.07)

$ (0.04)

$ (0.03)

$ (0.11)

$ (0.06)

$ (0.19)

$ (0.09)

$ (0.12)

$ (0.16)

$ (0.07)

$ (0.04)

$ (0.02)

$ (0.03)

$ (0.02)

$ (0.03)

$ (0.11)

$ (0.05)

$ (0.18)

$ (0.09)

$ (0.11)

$ (0.16)

$ 0

$ (2)

$ (1)

(2)

(1)

$ (2)

(3)

$ (4)

(5)

(42)

(2)

(1)

(2)

(1)

(2)

(3)

(4)

(5)

(42)

(1)

^[2]

(1)

^[2]

(1)

^[2]

(2)

^[2]

(3)

^[2]

(3)

(21)

(1)

$ (2)

$ (1)

(1)

$ (2)

(2)

$ (4)

(3)

(4)

(22)

(1)

(2)

(1)

(20)

(1)

(2)

(1)

(20)

Net Income (Loss) Available to Common Stockholders, Basic

(1)

(2)

(1)

(20)

(1)

(2)

(1)

(20)

Comprehensive Income (Loss), Net of Tax, Attributable to Parent

$ 1

$ (1)

$ 0

$ (1)

$ (2)

$ (1)

$ (20)

$ 0

$ (0.05)

Earnings Per Share, Basic and Diluted, by Common Class [Line Items]

$ 0

$ (0.05)

[1]	The sum of quarterly information may not agree to year-to-date information due to rounding.
[2]	Exclusive of depreciation, amortization and accretion shown separately.

Restatement of Previously Issued Consolidated Financial Statements Restatement of Statement of Cash Flows (Details) - USD ($) $ in Millions	3 Months Ended							6 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2019	Jun. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net income (loss)			$ 193				$ 100	$ 409	$ 270	$ 652	$ 421	$ 860	$ 622	$ 366
Depreciation, amortization and accretion	$ 388	$ 393	394	$ 389	$ 385	$ 379	374	787	753	1,175	1,138	1,572	1,527	1,241
Increase (decrease) in other liabilities			(7)				(43)	77	76	179	179	254	271	234
Decrease (increase) in receivables			(43)				(5)	(89)	(59)	(166)	(74)	(96)	(105)	71
Net Cash Provided by (Used in) Operating Activities			512				452	1,227	1,110	1,890	1,773	2,698	2,500	2,032
Capital expenditures			(480)				(370)	(998)	(762)	(1,537)	(1,239)	(2,057)	(1,739)	(1,217)
Net Cash Provided by (Used in) Investing Activities			(489)				(384)	(1,010)	(777)	(1,549)	(1,279)	(2,081)	(1,793)	(10,482)
Net Cash Provided by (Used in) Continuing Operations			(5)				(95)	16	(103)	(88)	14	(75)	(26)	(258)
Cash, Cash Equivalents and Restricted Cash - Beginning of Period	429	408	413	453	336	345	440	413	440	413	440	413	440	697
Cash, Cash Equivalents and Restricted Cash - End of Period	325	429	408	413	453	336	345	429	336	325	453	338	413	440
Previously Reported [Member]
Net income (loss)			210				114	456	294	729	458		671	445
Depreciation, amortization and accretion	389			390						1,176			1,528	1,242
Increase (decrease) in other liabilities			(24)				(57)	30	53	102	144		223	175
Decrease (increase) in receivables														61
Net Cash Provided by (Used in) Operating Activities			512				452	1,227	1,111	1,891	1,775		2,502	2,043
Capital expenditures									(763)	(1,538)	(1,241)		(1,741)	(1,228)
Net Cash Provided by (Used in) Investing Activities									(778)	(1,550)	(1,281)		(1,795)	(10,493)
Net Cash Provided by (Used in) Continuing Operations			(5)				(95)	16	(103)	(88)	14		(26)	(258)
Cash, Cash Equivalents and Restricted Cash - Beginning of Period	429	408	413	453	336	345	440	413	440	413	440	413	440	697
Cash, Cash Equivalents and Restricted Cash - End of Period	325	429	408	413	453	336	345	429	336	325	453		413	440
Restatement Adjustment [Member]
Net income (loss)			(17)	(13)			(14)	(47)	(23)	(77)	(35)		(48)	(59)
Depreciation, amortization and accretion	0			0						0			0	0
Increase (decrease) in other liabilities			17				14	47	23	77	35		48	59
Decrease (increase) in receivables														0
Net Cash Provided by (Used in) Operating Activities			0				0	0	0	0	0		0	0
Capital expenditures									0	0	0		0	0
Net Cash Provided by (Used in) Investing Activities									0	0	0		0	0
Net Cash Provided by (Used in) Continuing Operations			0				0	0	0	0	0		0	0
Cash, Cash Equivalents and Restricted Cash - Beginning of Period	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Cash, Cash Equivalents and Restricted Cash - End of Period	0	0	0	0	0	0	0	0	0	0	0		0	0
Other Adjustments [Domain]
Net income (loss)			0	1			0	0	(1)	0	(2)		(1)	(20)
Depreciation, amortization and accretion	(1)			(1)						(1)			(1)	(1)
Increase (decrease) in other liabilities			0				0	0	0		0		0	0
Decrease (increase) in receivables														10
Net Cash Provided by (Used in) Operating Activities			0				0	0	(1)	(1)	(2)		(2)	(11)
Capital expenditures									1	1	2		2	11
Net Cash Provided by (Used in) Investing Activities									1	1	2		2	11
Net Cash Provided by (Used in) Continuing Operations			0				0	0	0		0		0	0
Cash, Cash Equivalents and Restricted Cash - Beginning of Period	$ 0	0	0	0	0	0	0	0	0	$ 0	0	$ 0	0	0
Cash, Cash Equivalents and Restricted Cash - End of Period		$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0		$ 0		$ 0	$ 0

Restatement of Previously Issued Consolidated Financial Statements Restatement of Statement of Equity (Details) - USD ($) $ in Millions	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Dividends/distributions in excess of earnings	$ (7,365)	$ (7,042)	$ (6,787)	$ (6,501)	$ (6,195)	$ (5,896)	$ (5,581)	$ (5,286)	$ (4,919)	$ (3,714)
Total equity	$ 10,489	10,786	11,013	11,267	11,571	11,846	12,129	12,404	11,925	7,222
Previously Reported [Member]
Dividends/distributions in excess of earnings		(6,503)	(6,277)	(6,022)	(5,732)	(5,447)	(5,144)	(4,858)	(4,505)	(3,379)
Total equity		11,325	11,523	11,746	12,034	12,295	12,566	12,832	12,339	7,557
Restatement Adjustment [Member]
Dividends/distributions in excess of earnings		(516)	(487)	(456)	(440)	(426)	(414)	(405)	(391)	(332)
Total equity		(516)	(487)	(456)	(440)	(426)	(414)	(405)	(391)	(332)
Other Adjustments [Domain]
Dividends/distributions in excess of earnings		(23)	(23)	(23)	(23)	(23)	(23)	(23)	(23)	(3)
Total equity		$ (23)	$ (23)	$ (23)	$ (23)	$ (23)	$ (23)	$ (23)	$ (23)	$ (3)

Summary of Significant Accounting Policies (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended							6 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2019	Jun. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenue Recognition Non-cancelable Lease Term												five to 15 years
Capitalized Labor Costs												$ 246	$ 212	$ 92
Useful life of site rental contracts and customer relationships (years)												20 years
Revenue Recognition Non-cancelable Term for Non-wireless Contracts Range, Minimum												three to 20 years
Portion of company site rental costs that are ground lease expenses												50.00%
Ground Lease Agreement Initial Term												five years
Percentage of tax position that is likely of being realized upon ultimate settlement												50.00%
Asset write-down charges	$ 2	$ 6	$ 6	$ 8	$ 8	$ 6	$ 3	$ 12	$ 9	$ 13	$ 18	$ 19	26	17
Revenue, Performance Obligation, Description of Payment Terms												45 to 60 days
Revenue, Remaining Performance Obligation, Amount				2,700								$ 2,900	2,700	2,500
Contract with Customer, Liability, Revenue Recognized												$ 510	470
Towers [Member]
Estimated useful life, maximum, in years												20 years
Property, Plant and Equipment [Member]
Asset write-down charges												$ 17	22	$ 14
Other Current Assets [Member]
Straight-Line Site Rental Revenues				92								114	92
Deferred Revenue [Domain]
Straight-Line Site Rental Revenues				$ 1,400								$ 1,400	$ 1,400
Preferred Stock [Member]
Antidilutive securities excluded from computation of earnings per share (in shares)												14	15
Minimum [Member]
Ground Lease Agreement Initial Term												five years
Maximum [Member]
Ground Lease Agreement Initial Term												10 years

Summary of Significant Accounting Policies (Interest Expense and Amortization of Deferred Financing Costs) (Details) - USD ($) $ in Millions	3 Months Ended							6 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2019	Jun. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accounting Policies [Abstract]
Interest Expense, Debt, Excluding Amortization												$ 682	$ 635	$ 582
Amortization of deferred financing costs and adjustments on long-term debt, net												21	21	19
Capitalized Interest												(20)	(15)	(12)
Other												0	1	2
Interest Expense, Debt	$ (173)	$ (169)	$ (168)	$ (164)	$ (160)	$ (158)	$ (160)	$ (337)	$ (318)	$ (510)	$ (478)	$ 683	$ 642	$ 591

Summary of Significant Accounting Policies (Per Share Information) (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions

3 Months Ended

6 Months Ended

9 Months Ended

12 Months Ended

Dec. 31, 2019

^[1]

Sep. 30, 2019

Jun. 30, 2019

Mar. 31, 2019

Dec. 31, 2018

Sep. 30, 2018

Jun. 30, 2018

Mar. 31, 2018

Jun. 30, 2019

Jun. 30, 2018

Sep. 30, 2019

Sep. 30, 2018

Dec. 31, 2019

Dec. 31, 2018

Dec. 31, 2017

$ 242

^[1]

$ 216

^[1]

$ 193

^[1]

$ 201

^[1]

$ 151

^[1]

$ 170

^[1]

$ 100

^[1]

$ 409

$ 270

$ 652

$ 421

$ 860

$ 622

$ 366

193

100

409

270

652

421

860

622

366

Net income (loss) attributable to CCIC common stockholders

(28)

(57)

(85)

(113)

(58)

$ 214

$ 188

$ 165

$ 173

$ 123

$ 142

$ 72

$ 352

$ 213

$ 567

$ 336

$ 747

$ 509

$ 308

Weighted-average common shares outstanding:

Basic weighted-average number of common stock outstanding

416

415

409

415

412

416

413

416

413

382

Diluted weighted-average number of common shares outstanding

418

417

416

410

417

413

418

414

418

415

383

Net income (loss) attributable to CCIC common stockholders, after deduction of dividends on preferred stock, per common share:

$ 0.43

$ 0.51

^[1]

$ 0.45

^[1]

$ 0.40

^[1]

$ 0.42

^[1]

$ 0.30

^[1]

$ 0.34

^[1]

$ 0.18

^[1]

$ 0.85

$ 0.52

$ 1.36

$ 0.81

$ 1.80

$ 1.23

$ 0.80

Common Stock, Dividends, Per Share, Declared

$ 0.43

$ 0.51

^[1]

$ 0.45

^[1]

$ 0.40

^[1]

$ 0.42

^[1]

$ 0.30

^[1]

$ 0.34

^[1]

$ 0.18

^[1]

$ 0.84

$ 0.52

$ 1.36

$ 0.81

1.79

1.23

0.80

$ 4.58

$ 4.28

$ 3.90

Restricted Stock Units (RSUs) [Member]

Weighted-average common shares outstanding:

Effect of assumed dilution from potential common shares relating to stock options and restricted stock awards

[1]	The sum of quarterly information may not agree to year-to-date information due to rounding.

Acquisitions (Details)
$ / shares in Units, shares in Millions, $ in Millions

12 Months Ended

Dec. 31, 2017

USD ($)

$ / shares

Dec. 31, 2016

USD ($)

Business Acquisition, Pro Forma Depreciation and Amortization

$ 247

Business Acquisition, Pro Forma Revenue

4,949

Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual

314

Business Acquisition, Pro Forma Income (Loss) Before Income Taxes

^[1],[2]

462

Business Combination, Pro Forma Benefit (Provision) for Income Taxes

^[3]

(29)

Business Acquisition, Pro Forma Net Income (Loss)

^[1],[2]

$ 433

Business Acquisition, Pro Forma Earnings Per Share, Basic | $ / shares

^[2],[4]

$ 0.68

Business Acquisition, Pro Forma Earnings Per Share, Diluted | $ / shares

^[2],[4]

$ 0.67

FiberNet Acquisition [Member]

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets

$ 52

Business Combination, Consideration Transferred

$ 1,500

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment

11,500

$ 438

Business Acquisition, Goodwill, Expected Tax Deductible Amount

^[5]

778

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill

^[6]

327

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities

Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net

^[7]

1,521

Wilcon Acquisition [Member]

Business Combination, Consideration Transferred

$ 600

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment

1,900

$ 150

Business Acquisition, Goodwill, Expected Tax Deductible Amount

360

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Deferred Revenue

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill

140

Lightower Acquisition [Member]

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets

Business Combination, Consideration Transferred

$ 7,100

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment

32,000

$ 2,194

Business Acquisition, Goodwill, Expected Tax Deductible Amount

^[8]

3,171

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill

^[9]

2,177

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities

176

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities

342

Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net

^[10]

$ 7,150

November 2016 Equity Offering [Domain]

Stock Issued During Period, Shares, New Issues | shares

11.4

Proceeds from Issuance of Common Stock

$ 1,000

Top Metro Markets [Domain] | FiberNet Acquisition [Member]

Revenue from Contract with Customer [Abstract]

6,000

[1]

For the year ended December 31, 2017, amounts are inclusive of pro forma adjustments to depreciation and amortization of $247 million, related to property and equipment and intangibles recorded as a result of the 2017 Acquisitions.

[2]

Pro forma amounts include the impact of the interest expense and common stock share issuances associated with the related debt and equity financings for the 2017 Acquisitions (see above and notes 9 and 12).

[3]

[4]

[5]

The final purchase price allocation for the FiberNet Acquisition resulted in the recognition of goodwill based on:


•	the Company's expectation to leverage the FiberNet fiber footprint to support new small cells and fiber solutions,


•	the complementary nature of the FiberNet fiber to the Company's existing fiber assets and its location in top metro markets where the Company expects to see wireless carrier network investments,


•	the Company's belief that the acquired fiber assets are well-positioned to benefit from the continued growth trends in the demand for data, and

•

other intangibles not qualified for separate recognition, including the assembled workforce.

[6]

Predominantly comprised of site rental contracts and tenant relationships.

[7]

The vast majority of the assets have been included in the Company's REIT. As such, no deferred taxes were recorded in connection with the FiberNet Acquisition

[8]

The final purchase price allocation for the Lightower Acquisition resulted in the recognition of goodwill based on:


•	the Company's expectation to leverage the Lightower fiber footprint to support new small cells and fiber solutions,


•	the complementary nature of the Lightower fiber to the Company's existing fiber assets and its location where the Company expects to see wireless carrier network investments,


•	the Company's belief that the acquired fiber assets are well-positioned to benefit from the continued growth trends in the demand for data, and

•

other intangibles not qualified for separate recognition, including the assembled workforce.

[9]

Predominantly comprised of site rental contracts and tenant relationships.

[10]

The vast majority of the assets have been included in the Company's REIT. As such, no deferred taxes were recorded in connection with the Lightower Acquisition.

Revenue (Details)
$ in Millions

12 Months Ended

Dec. 31, 2019

USD ($)

Weighted Average Remaining Term Of Tenant Leases at the Tenant's Option

5 years

Operating Leases, Future Minimum Payments Receivable, 2020

$ 4,177

^[1]

Operating Leases, Future Minimum Payments Receivable, 2021

3,986

^[1]

Operating Leases, Future Minimum Payments Receivable, 2022

3,758

^[1]

Operating Leases, Future Minimum Payments Receivable, 2023

3,141

^[1]

Operating Leases, Future Minimum Payments Receivable, in 2024

2,405

^[1]

Operating Leases, Future Minimum Payments Receivable, Thereafter

6,908

^[1]

Operating Leases, Future Minimum Payments Receivable

$ 24,375

^[1]

[1]	Based on the nature of the contract, tenant contracts are accounted for pursuant to relevant lease accounting (ASC 842) or revenue accounting (ASC 606) guidance. Excludes amounts related to services, as those contracts generally have a duration of one year or less.

Property and Equipment (Details) - USD ($)
$ in Millions

12 Months Ended

Dec. 31, 2019

Dec. 31, 2018

Dec. 31, 2017

Sep. 30, 2019

Jun. 30, 2019

Mar. 31, 2019

Sep. 30, 2018

Jun. 30, 2018

Mar. 31, 2018

Less: accumulated depreciation

$ 24,334

$ 22,216

(9,668)

(8,563)

Total property and equipment, net

14,666

13,653

$ 14,393

$ 14,128

$ 13,860

$ 13,410

$ 13,195

$ 13,028

Depreciation expense

1,100

$ 914

Land owned in fee and perpetual easements [Member]

^[1]

2,080

1,981

Buildings [Member]

$ 147

134

Communication Infrastructure [Member]

40 years

$ 20,521

18,683

Information technology assets and other [Member]

20 years

Construction in Process [Member]

$ 506

443

Minimum [Member] | Communication Infrastructure [Member]

$ 1,080

$ 975

Minimum [Member] | Information technology assets and other [Member]

1 year

Maximum [Member] | Communication Infrastructure [Member]

2 years

Maximum [Member] | Information technology assets and other [Member]

20 years

Goodwill and Finite-Lived Intangible Assets [Line Items]

7 years

[1]	Includes land owned through fee interests and perpetual easements.

Goodwill and Intangible Assets (Details) - USD ($)
$ in Millions

12 Months Ended

Dec. 31, 2019

Dec. 31, 2018

Dec. 31, 2017

Goodwill Period Start

$ 10,078

$ 10,021

Goodwill Period End

10,078

$ 10,021

Finite-lived intangible assets, gross

7,904

8,281

Accumulated amortization of intangible assets

(3,068)

(2,765)

Finite-lived intangible assets, net

4,836

5,516

Estimated annual amortization expense related to intangible assets - 2020

427

Estimated annual amortization expense related to intangible assets - 2021

427

Estimated annual amortization expense related to intangible assets - 2022

427

Estimated annual amortization expense related to intangible assets - 2023

427

Estimated annual amortization expense related to intangible assets - 2024

384

Site Rental Contracts and Customer Relationships [Member]

Goodwill and Finite-Lived Intangible Assets [Line Items]

Finite-lived intangible assets, gross

7,761

7,787

Accumulated amortization of intangible assets

(2,997)

(2,578)

Finite-lived intangible assets, net

4,764

5,209

Other Intangible Assets [Member]

Goodwill and Finite-Lived Intangible Assets [Line Items]

Finite-lived intangible assets, gross

^[1]

143

494

Accumulated amortization of intangible assets

^[1]

(71)

(187)

Finite-lived intangible assets, net

^[1]

307

Other Acquired Goodwill [Domain]

Goodwill and Finite-Lived Intangible Assets [Line Items]

Additions due to acquisitions

Depreciation, Amortization and Accretion [Member]

Goodwill and Finite-Lived Intangible Assets [Line Items]

Amortization expense

428

314

Site Rental Costs of Operations [Member]

Goodwill and Finite-Lived Intangible Assets [Line Items]

Amortization expense

^[2]

Total Amortization Expense [Member]

Goodwill and Finite-Lived Intangible Assets [Line Items]

Amortization expense

$ 428

$ 445

$ 332

[1]

[2]

Other Liabilities (Details) - USD ($)
$ in Millions

12 Months Ended

Dec. 31, 2019

Dec. 31, 2018

Dec. 31, 2017

Sep. 30, 2019

Jun. 30, 2019

Mar. 31, 2019

Sep. 30, 2018

Jun. 30, 2018

Mar. 31, 2018

Asset Retirement Obligation, Accretion Expense

$ 15

$ 14

$ 13

Estimated Future Undiscounted Cash Flows Expected To Be Paid Relating To Asset Retirement Obligations

^[1]

2,516

3,110

$ 2,458

$ 2,411

$ 2,369

$ 3,074

$ 3,014

$ 2,946

1,000

Amortization of Below Market Tenant Lease

Accrued Payroll and Other Compensation

174

157

Above Market Leases [Member]

Amortization of Above Market Leases

$ 19

Deferred Revenue [Domain]

deferred ground lease payable [Member]

1,814

1,618

Above Market Leases [Member]

^[2]

603

deferred credits [Member]

^[2]

181

asset retirement obligations [Member]

434

499

Deferred Tax Liability, noncurrent [Member]

227

192

Other Liabilities [Member]

Amortization of Below-Market Leases, 2020 [Domain]

$ 10

Expected amortization of below-market tenant leases by year

Amortization of Below-Market Leases, 2021 [Domain]

Expected amortization of below-market tenant leases by year

Amortization of Below-Market Leases, 2022 [Domain]

Expected amortization of below-market tenant leases by year

Amortization of Below-Market Leases, 2023 [Member]

Expected amortization of below-market tenant leases by year

Amortization of Below-Market Leases, 2024 [Member]

Expected amortization of below-market tenant leases by year

$ 41

[1]	See "Recently Adopted Accounting Pronouncements" in note 3 to the consolidated financial statements for a discussion of the recently adopted new lease standard.
[2]	See "Recently Adopted Accounting Pronouncements" in note 3 for a discussion of the recently adopted new lease standard, including with respect to deferred ground lease payable and above-market leases previously classified as other long-term liabilities.

Debt and Other Obligations (Indebtedness) (Details) - USD ($)
$ in Millions

12 Months Ended

Dec. 31, 2019

Sep. 30, 2019

Jun. 30, 2019

Mar. 31, 2019

Dec. 31, 2018

Sep. 30, 2018

Jun. 30, 2018

Mar. 31, 2018

Dec. 31, 2017

Dec. 31, 2016

Dec. 31, 2014

Dec. 31, 2012

Less: current maturities and short-term debt and other current obligations

$ 18,121

$ 16,682

100

$ 100

$ 98

$ 96

107

$ 111

$ 112

$ 130

Non-current portion of long-term debt and other long-term obligations

18,021

$ 17,750

$ 17,471

$ 17,120

16,575

$ 16,313

$ 15,844

$ 15,616

5.25%

Commercial Paper [Member]

$ 1,650

Debt Instrument, Maturity Date, Description

^[1],[2]

$ 155

397 days

Debt, Weighted Average Interest Rate

2.10%

Secured Debt [Member]

$ 3,271

3,283

Unsecured Debt [Member]

Minimum [Member] | Finance Lease Obligations and Other [Member]

$ 14,850

13,399

Debt Instrument Maturity Date Range

one year

Minimum [Member] | 2016 Revolver [Member]

Line of Credit Facility, Commitment Fee Percentage

0.125%

Maximum [Member] | Finance Lease Obligations and Other [Member]

Debt Instrument Maturity Date Range

30 years

Maximum [Member] | 2016 Revolver [Member]

Line of Credit Facility, Commitment Fee Percentage

0.35%

Fixed Rate Debt 2009 Securitized Notes A-1 [Member] | Secured Debt [Member]

3.849% Secured Notes [Member] | Secured Debt [Member]

^[3]

$ 0

$ 995

994

3.90%

^[4]

3.849%

Fixed Rate Debt 2009 Securitized Notes A-2 [Member] | Secured Debt [Member]

$ 1,000

^[3]

$ 67

2015 Tower Revenue Notes 3.222% due 2042 [Member]

^[4]

9.00%

2015 Tower Revenue Notes 3.222% due 2042 [Member] | Secured Debt [Member]

$ 300

^[5],[6]

$ 298

298

2018 Tower Revenue Notes 3.720% due 2043 [Member]

^[4]

3.20%

2018 Tower Revenue Notes 3.720% due 2043 [Member] | Secured Debt [Member]

$ 250

^[5],[6]

$ 248

$ 247

3.70%

^[4]

3.72%

2015 Tower Revenue Notes 3.663% due 2045 [Member]

$ 250

2015 Tower Revenue Notes 3.663% due 2045 [Member] | Secured Debt [Member]

$ 700

^[5],[6]

$ 694

693

2018 Tower Revenue Notes 4.241% due 2048 [Member]

^[4]

3.70%

2018 Tower Revenue Notes 4.241% due 2048 [Member] | Secured Debt [Member]

$ 750

^[5],[6]

$ 742

4.20%

^[4]

4.241%

Finance Lease Obligations and Other [Member] | Maximum [Member]

$ 750

10.00%

2016 Revolver [Member]

Line of Credit Facility, Remaining Borrowing Capacity

$ 4,500

2016 Revolver [Member] | Bank Debt [Member]

$ 525

^[7]

1,075

2016 Revolver [Member] | Minimum [Member]

^[4],[8]

2.80%

2016 Revolver [Member] | Maximum [Member]

1.00%

2016 Term Loan A [Member] | Bank Debt [Member]

1.75%

$ 2,310

2,354

^[4],[8]

2.90%

Senior Unsecured 2016 Notes 3.40% [Member] | Bonds [Member]

$ 2,000

$ 850

850

2.250% Senior Notes [Member] | Bonds [Member]

^[4]

3.40%

$ 698

697

2.30%

^[4]

2.25%

4.875% Senior Notes [Member] | Bonds [Member]

$ 700

$ 846

844

4.90%

^[4]

4.875%

5.250% Senior Notes [Member] | Bonds [Member]

$ 850

$ 1,644

1,641

3.150% Senior Notes [Member] | Bonds [Member]

^[4]

5.30%

$ 744

$ 742

3.20%

^[4]

3.15%

August 2017 Senior Unsecured 3.200% Notes [Member] | Bonds [Member]

$ 750

$ 744

743

3.20%

^[4]

3.20%

Senior Unsecured 2016 Notes 4.450% [Member] | Bonds [Member]

$ 750

$ 893

892

Senior Unsecured 2016 Notes 3.7% [Member] | Bonds [Member]

^[4]

4.50%

$ 744

744

4.000% Senior Unsecured Notes [Member] | Bonds [Member]

^[4]

3.70%

$ 495

494

4.00%

^[4]

4.00%

August 2017 Senior Unsecured 3.650% Notes [Member] | Bonds [Member]

$ 500

$ 993

992

3.70%

^[4]

3.65%

3.800% Senior Notes [Member] | Bonds [Member]

$ 1,000

$ 990

$ 988

3.80%

^[4]

3.80%

February 2019 Senior Unsecured 4.300% Notes [Member] | Bonds [Member]

$ 1,000

$ 592

^[4]

4.30%

August 2019 Senior Unsecured 3.100% Notes [Member] | Bonds [Member]

$ 600

$ 543

^[4]

3.10%

4.750% Senior Unsecured Notes [Member] [Member] | Bonds [Member]

$ 550

$ 344

343

4.80%

^[4]

4.75%

February 2019 Senior Unsecured 5.200% Notes [Member] | Bonds [Member]

$ 350

$ 395

^[4]

5.20%

August 2019 Senior Unsecured 4.000% Notes [Member] | Bonds [Member]

$ 400

$ 345

^[4]

4.00%

Tower Revenue Notes [Member]

$ 350

Debt Instrument, Interest Rate, Increase (Decrease)

5.00%

Secured Debt [Member] | Finance Lease Obligations and Other [Member]

^[9]

$ 227

[1]	The weighted-average interest rate for the outstanding commercial paper under the CP Program, as defined below, was 2.1%.
[2]	The maturities of the Commercial Paper Notes, as defined below, when outstanding, may vary but may not exceed 397 days from the date of issue.
[3]	The Secured Notes, Series 2009-1, Class A-1 and Secured Notes, Series 2009-1, Class A-2 are collectively referred to herein as "2009 Securitized Notes."
[4]	Represents the weighted-average stated interest rate.
[5]	If the respective series of Tower Revenue Notes are not paid in full on or prior to an applicable anticipated repayment date, then Excess Cash Flow (as defined in the indenture governing the terms of such notes) of the issuers of such notes will be used to repay principal of the applicable series and class of the Tower Revenue Notes, and additional interest (of an additional approximately 5% per annum) will accrue on the respective Tower Revenue Notes. As of December 31, 2019, the Tower Revenue Notes have principal amounts of $300 million, $250 million, $700 million and $750 million, with anticipated repayment dates in 2022, 2023, 2025 and 2028, respectively.
[6]	The Tower Revenue Notes, Series 2015-1 and 2015-2 ("May 2015 Tower Revenue Notes") and Tower Revenue Notes, Series 2018-1 and 2018-2 ("July 2018 Tower Revenue Notes") are collectively referred to herein as "Tower Revenue Notes."
[7]	As of December 31, 2019, the undrawn availability under the 2016 Revolver was $4.5 billion.
[8]	Both the 2016 Revolver and senior unsecured term loan A facility ("2016 Term Loan A") bear interest at a rate per annum equal to LIBOR plus a credit spread ranging from 1.000% to 1.750%, based on the Company's senior unsecured debt rating. The Company pays a commitment fee ranging from 0.125% to 0.350%, based on the Company's senior unsecured debt rating, per annum on the undrawn available amount under the 2016 Revolver.
[9]	The Company's finance leases and other obligations relate to land, fiber, vehicles, and other assets and bear interest rates ranging up to 10% and mature in periods ranging from less than one year to approximately 30 years.

Debt and Other Obligations (Textuals) (Details) - USD ($)
$ in Millions

12 Months Ended

Dec. 31, 2019

Dec. 31, 2018

Dec. 31, 2017

Dec. 31, 2016

Dec. 31, 2014

Dec. 31, 2015

Dec. 31, 2012

Extinguishment of Debt, Amount

$ 1,650

$ 12

$ 2,250

$ 0

5.25%

Tower Revenue Notes [Member]

$ 18,121

16,682

Debt Instrument, Interest Rate, Increase (Decrease)

5.00%

4.875% Senior Notes [Member]

Proceeds from Issuance of Debt

$ 839

2018 Tower Revenue Notes 3.720% due 2043 [Member]

2018 Tower Revenue Notes 4.241% due 2048 [Member]

$ 250

750

Secured Debt [Member]

Secured Debt [Member] | January 2010 Tower Revenue Notes [Member]

$ 3,271

3,283

Secured Debt [Member] | 2.381% Secured Notes [Member]

Repayments of Debt

300

Secured Debt [Member] | 3.849% Secured Notes [Member]

2.381%

Repayments of Debt

$ 500

$ 1,000

3.90%

^[1]

3.849%

Secured Debt [Member] | July 2018 Tower Revenue Notes [Member]

$ 995

994

Secured Debt [Member] | 2018 Tower Revenue Notes 3.720% due 2043 [Member]

1,000

$ 250

3.70%

^[1]

3.72%

Secured Debt [Member] | 2018 Tower Revenue Notes 4.241% due 2048 [Member]

^[2],[3]

$ 248

$ 247

$ 750

4.20%

^[1]

4.241%

Secured Debt [Member] | 2018 Tower Revenue Notes Risk Retention Tranche [Member]

^[2],[3]

$ 742

Bank Debt [Member] | 2016 Revolver [Member]

Line of Credit Facility, Increase (Decrease), Net

750

1,000

Line of Credit Facility, Maximum Borrowing Capacity

$ 5,000

4,250

3,500

2,500

Extinguishment of Debt, Amount

500

^[1],[4]

2.80%

Bank Debt [Member] | 2016 Term Loan A [Member]

$ 525

^[5]

1,075

2,000

^[1],[4]

2.90%

Bank Debt [Member] | Senior Unsecured 364-Day Revolving Credit Facility [Domain]

$ 2,310

2,354

Line of Credit Facility, Maximum Borrowing Capacity

1,000

Commercial Paper [Member]

Commercial Paper - Maximum Issued

1,000

Commercial Paper

155

Bonds [Member] | May 2016 Senior Unsecured Notes [Member]

^[6],[7]

$ 155

Bonds [Member] | 4.875% Senior Notes [Member]

1,000

$ 850

4.90%

^[1]

4.875%

Bonds [Member] | 4.000% Senior Unsecured Notes [Member]

$ 846

844

$ 500

4.00%

^[1]

4.00%

Bonds [Member] | 2016 Senior Unsecured Notes [Domain]

$ 495

494

Bonds [Member] | 3.400% Senior Notes [Member]

1,500

$ 250

Bonds [Member] | 3.700% Senior Notes [Member]

3.40%

$ 750

Bonds [Member] | 2.250% Senior Notes [Member]

3.70%

$ 700

2.30%

^[1]

2.25%

Bonds [Member] | 4.450% Senior Notes [Member]

$ 698

697

$ 900

Bonds [Member] | 4.750% Senior Unsecured Notes [Member] [Member]

4.45%

$ 350

4.80%

^[1]

4.75%

Bonds [Member] | August 2017 Senior Notes [Member]

$ 344

343

Bonds [Member] | August 2017 Senior Unsecured 3.200% Notes [Member]

$ 1,750

$ 750

3.20%

^[1]

3.20%

Bonds [Member] | August 2017 Senior Unsecured 3.650% Notes [Member]

$ 744

743

$ 1,000

3.70%

^[1]

3.65%

Bonds [Member] | 3.150% Senior Notes [Member]

$ 993

992

$ 750

3.20%

^[1]

3.15%

Bonds [Member] | 3.800% Senior Notes [Member]

$ 744

$ 742

$ 1,000

3.80%

^[1]

3.80%

Bonds [Member] | August 2019 Senior Notes [Domain]

$ 990

$ 988

Bonds [Member] | August 2019 Senior Unsecured 3.100% Notes [Member]

900

$ 550

^[1]

3.10%

Bonds [Member] | August 2019 Senior Unsecured 4.000% Notes [Member]

$ 543

$ 350

^[1]

4.00%

Bonds [Member] | February 2019 Senior Notes [Domain]

$ 345

Bonds [Member] | February 2019 Senior Unsecured 4.300% Notes [Member]

1,000

$ 600

^[1]

4.30%

Bonds [Member] | February 2019 Senior Unsecured 5.200% Notes [Member]

$ 592

$ 400

^[1]

5.20%

August 2010 Tower Revenue Notes ARD [Domain] | Secured Debt [Member] | Fixed Rate Securitized Debt August 2010 Tower Revenue Notes 5 [Member]

$ 395

$ 0

Collateral Pledged [Member]

$ 250

Debt Instrument, PPE Collaterized Amount

$ 1,000

Additional Principal Incurred [Member] | Bank Debt [Member] | 2016 Term Loan A [Member]

February 2016 Senior Note Upsizing [Member] | Bonds [Member] | 3.400% Senior Notes [Member]

$ 500

$ 600

3.40%

[1]	Represents the weighted-average stated interest rate.
[2]	If the respective series of Tower Revenue Notes are not paid in full on or prior to an applicable anticipated repayment date, then Excess Cash Flow (as defined in the indenture governing the terms of such notes) of the issuers of such notes will be used to repay principal of the applicable series and class of the Tower Revenue Notes, and additional interest (of an additional approximately 5% per annum) will accrue on the respective Tower Revenue Notes. As of December 31, 2019, the Tower Revenue Notes have principal amounts of $300 million, $250 million, $700 million and $750 million, with anticipated repayment dates in 2022, 2023, 2025 and 2028, respectively.
[3]	The Tower Revenue Notes, Series 2015-1 and 2015-2 ("May 2015 Tower Revenue Notes") and Tower Revenue Notes, Series 2018-1 and 2018-2 ("July 2018 Tower Revenue Notes") are collectively referred to herein as "Tower Revenue Notes."
[4]	Both the 2016 Revolver and senior unsecured term loan A facility ("2016 Term Loan A") bear interest at a rate per annum equal to LIBOR plus a credit spread ranging from 1.000% to 1.750%, based on the Company's senior unsecured debt rating. The Company pays a commitment fee ranging from 0.125% to 0.350%, based on the Company's senior unsecured debt rating, per annum on the undrawn available amount under the 2016 Revolver.
[5]	As of December 31, 2019, the undrawn availability under the 2016 Revolver was $4.5 billion.
[6]	The weighted-average interest rate for the outstanding commercial paper under the CP Program, as defined below, was 2.1%.
[7]	The maturities of the Commercial Paper Notes, as defined below, when outstanding, may vary but may not exceed 397 days from the date of issue.

Debt and Other Obligations (Scheduled Contractual Maturities) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($)
Debt Instrument [Line Items]
Contractual Maturities - 2020	$ 253
Contractual Maturities - 2021	1,675
Contractual Maturities - 2022	1,000
Contractual Maturities - 2023	3,604
Contractual Maturities - 2024	3,172
Contractual Maturities - Thereafter	8,531
Total Cash Obligations	18,235
Unamortized Discounts	(114)
Total Debt and Other Obligations Outstanding	$ 18,121
Tower Revenue Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Increase (Decrease)	5.00%

Debt and Other Obligations (Debt Purchases and Repayments) (Details) - USD ($)
$ in Millions

3 Months Ended

6 Months Ended

9 Months Ended

12 Months Ended

Dec. 31, 2019

^[2]

Sep. 30, 2019

^[2]

Jun. 30, 2019

^[2]

Mar. 31, 2019

^[2]

Dec. 31, 2018

^[2]

Sep. 30, 2018

^[2]

Jun. 30, 2018

^[2]

Mar. 31, 2018

^[2]

Jun. 30, 2019

Jun. 30, 2018

Sep. 30, 2019

Sep. 30, 2018

Dec. 31, 2019

Dec. 31, 2018

Dec. 31, 2017

$ 12

$ 2,250

$ 0

Gains (losses) on retirement of long-term obligations

^[1]

2,346

^[1]

$ 0

$ (1)

$ 0

$ (32)

$ (3)

$ (71)

$ (2)

$ (74)

$ (2)

$ (106)

(2)

^[3]

(106)

^[3]

(4)

^[4]

Fixed Rate Debt 2009 Securitized Notes A-1 [Member]

Gains (losses) on retirement of long-term obligations

^[1]

^[3]

(1)

Fixed Rate Securitized Debt January 2010 Tower Revenue Notes 3 [Member]

1,250

Gains (losses) on retirement of long-term obligations

^[1]

1,318

^[3]

(71)

2016 Term Loan A [Member]

Gains (losses) on retirement of long-term obligations

^[1]

$ (1)

^[3]

(3)

^[3]

$ (4)

^[4]

Fixed Rate Securitized Debt August 2010 Tower Revenue Notes 6 [Member]

1,000

Gains (losses) on retirement of long-term obligations

^[1]

1,028

^[3]

$ (32)

[1]	Exclusive of accrued interest.
[2]	The sum of quarterly information may not agree to year-to-date information due to rounding.
[3]	Inclusive of the write-off of the respective deferred financing costs.
[4]	The losses represent write-off of deferred financing costs.

Fair Value Disclosures (Estimated Fair Values and Carrying Amounts of Assets and Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents, carrying value	$ 196	$ 182	$ 288	$ 245	$ 277	$ 323	$ 206	$ 220	$ 314
Cash and cash equivalents, fair value	196				277
Restricted cash, carrying value	142				136
Restricted Cash Fair Value Disclosure	142				136
Debt and other obligations, carrying amount	18,121				16,682
Obligations, Fair Value Disclosure	$ 19,170				$ 16,562

Income Taxes (Income (Loss) from Continuing Operations before Income Taxes) (Details) - USD ($)
$ in Millions

12 Months Ended

Dec. 31, 2019

Dec. 31, 2018

Dec. 31, 2017

Income (loss) before income taxes

Domestic

$ 850

$ 618

$ 372

Foreign

^[1]

$ 881

$ 641

$ 392

[1]	Inclusive of income (loss) before income taxes from Puerto Rico.

Income Taxes (Benefit (Provision) for Income Taxes) (Details) - USD ($)
$ in Millions

3 Months Ended

6 Months Ended

9 Months Ended

12 Months Ended

Dec. 31, 2019

^[1]

Sep. 30, 2019

Jun. 30, 2019

^[1]

Mar. 31, 2019

Dec. 31, 2018

^[1]

Sep. 30, 2018

^[1]

Jun. 30, 2018

^[1]

Mar. 31, 2018

Jun. 30, 2019

Jun. 30, 2018

Sep. 30, 2019

Sep. 30, 2018

Dec. 31, 2019

Dec. 31, 2018

Dec. 31, 2017

Current Federal Tax Expense (Benefit)

$ (6)

$ (5)

$ (3)

Current Foreign

(8)

(7)

(6)

Current State

(5)

(2)

Total current

(19)

(17)

(11)

Deferred Federal

(18)

Deferred Foreign

(2)

Total deferred

$ (1)

$ (2)

(2)

(15)

Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount

$ (6)

$ (5)

$ (4)

$ (6)

^[1]

$ (5)

$ (4)

^[1]

$ (10)

$ (9)

$ (15)

$ (13)

$ (21)

$ (19)

$ (26)

[1]	The sum of quarterly information may not agree to year-to-date information due to rounding.

Income Taxes Income Taxes Effective Income Tax Rate Reconciliation (Details) - USD ($)
$ in Millions

3 Months Ended

6 Months Ended

9 Months Ended

12 Months Ended

Dec. 31, 2019

^[2]

Sep. 30, 2019

Jun. 30, 2019

^[2]

Mar. 31, 2019

^[2]

Dec. 31, 2018

^[2]

Sep. 30, 2018

^[2]

Jun. 30, 2018

^[2]

Mar. 31, 2018

^[2]

Jun. 30, 2019

Jun. 30, 2018

Sep. 30, 2019

Sep. 30, 2018

Dec. 31, 2019

Dec. 31, 2018

Dec. 31, 2017

$ (185)

$ (135)

$ (137)

Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount

Tax adjustment related to REIT operations

178

128

(131)

Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount

(5)

(4)

(2)

Foreign Income Tax Expense (Benefit), Continuing Operations

(10)

(9)

(3)

Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount

^[1]

(15)

Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount

$ (6)

$ (5)

$ (4)

$ (6)

$ (5)

$ (4)

$ (10)

$ (9)

$ (15)

$ (13)

$ (21)

$ (19)

(26)

Deferred Tax Assets, Tax Credit Carryforwards, Alternative Minimum Tax

$ 2

[1]	Pursuant to the Tax Cuts and Jobs Act, which was signed into law in December 2017, the Company was required to write down its net federal deferred tax asset in the amount of $17 million as a result of the reduction in the federal corporate tax rate offset by a benefit of $2 million related to the refund of the Company's alternative minimum tax credit carryforward.
[2]	The sum of quarterly information may not agree to year-to-date information due to rounding.

Income Taxes (Components of Deferred Tax Assets and Liabilities) (Details) - USD ($)
$ in Millions

Dec. 31, 2019

Dec. 31, 2018

Property and equipment

$ 6

$ 5

Deferred site rental receivable

Deferred Tax Liabilities, Gross

Deferred Tax Assets, Goodwill and Intangible Assets

Net operating loss carryforwards

^[1]

Deferred ground lease payable

^[2]

Accrued liabilities

Other

Valuation allowance, asset

(1)

Total deferred income tax assets, net

Deferred Tax Assets, Net

$ 18

$ 19

[1]	Balance results from the Company's foreign NOLs. Due to the Company's REIT status, no federal or state NOLs result in the Company recording a deferred income tax asset. See further discussion surrounding the Company's NOL balances below.
[2]	See "Recently Adopted Accounting Pronouncements" in note 3 for a discussion of the recently adopted new lease standard.

Income Taxes (Jurisdictional Components of Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Income Taxes (Jurisdictional components of deferred taxes)
Deferred Tax Assets, Gross	$ 18	$ 20
Valuation allowance, asset	0	(1)
Net deferred income tax assets (liabilities)	18	19
U.S. Federal [Member]
Income Taxes (Jurisdictional components of deferred taxes)
Operating Loss Carryforwards	1,500
Deferred Tax Assets, Gross	25	25
Valuation allowance, asset	0	0
Net deferred income tax assets (liabilities)	25	25
State and Local Jurisdiction [Member]
Income Taxes (Jurisdictional components of deferred taxes)
Operating Loss Carryforwards	600
Deferred Tax Assets, Gross	1	1
Valuation allowance, asset	0	0
Net deferred income tax assets (liabilities)	1	1
Foreign Tax Authority [Member]
Income Taxes (Jurisdictional components of deferred taxes)
Operating Loss Carryforwards	48
Deferred Tax Assets, Gross	(8)	(6)
Valuation allowance, asset	0	(1)
Deferred Tax Liabilities, Net	(8)	$ (7)
Share-based Payment Arrangement [Member]
Income Taxes (Jurisdictional components of deferred taxes)
Operating Loss Carryforwards	$ 237

Stockholders' Equity (Details) - USD ($)	12 Months Ended
Stockholders' Equity (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Preferred Stock, Liquidation Preference, Value	$ 1,650,000,000	$ 1,650,000,000
Purchases of common stock, shares	400,000	300,000	300,000
Purchases of common stock, value	$ 44,000,000	$ 34,000,000	$ 23,000,000
At the Market Stock Offering Program, aggregate value of common stock		750,000,000
Availability Under ATM	750,000,000
Net proceeds from issuance of preferred stock	$ 0	$ 0	1,608,000,000
Preferred Stock [Member]
Preferred Stock, Liquidation Preference, Value			$ 1,000
Preferred Stock, Redemption Date	Aug. 01, 2020
Preferred Stock, Dividend Rate, Percentage			6.875%
Preferred Stock [Member] \| Minimum [Member]
Convertible Preferred Stock, Shares Issued upon Conversion	8.7772
Preferred Stock [Member] \| Maximum [Member]
Convertible Preferred Stock, Shares Issued upon Conversion	10.5326
Preferred Stock [Member] \| July 2017 Equity Offering [Member]
Stock Issued During Period, Shares, New Issues			1,650,000
Sale of Stock, Transaction Date			Jul. 26, 2017
Preferred Stock, Dividend Rate, Percentage			6.875%
Preferred Stock, Per Share Sales Price			$ 1,000
Net proceeds from issuance of preferred stock			$ 1,600,000,000
Common Stock [Member]
Stock Issued During Period, Shares, New Issues		8,000,000
Common Stock [Member] \| March 2018 Equity Financing [Member]
Stock Issued During Period, Shares, New Issues		8,000,000
Proceeds from Issuance of Common Stock		$ 841,000,000
Common Stock [Member] \| May 2017 Equity Offering [Member]
Stock Issued During Period, Shares, New Issues			4,750,000
Proceeds from Issuance of Common Stock			$ 442,000,000
Sale of Stock, Transaction Date			May 01, 2017
Common Stock [Member] \| July 2017 Equity Offering [Member]
Stock Issued During Period, Shares, New Issues			40,150,000
Proceeds from Issuance of Common Stock			$ 3,800,000,000
Sale of Stock, Transaction Date			Jul. 26, 2017

Stockholders' Equity Tax Treatment of Dividends Paid (Details) - $ / shares

3 Months Ended

Dec. 31, 2019

Sep. 30, 2019

Jun. 30, 2019

Mar. 31, 2019

Dec. 31, 2018

$ 17.1875

$ 1.20

$ 1.125

Preferred Stock [Member]

Feb. 03, 2020

Nov. 01, 2019

Aug. 01, 2019

May 01, 2019

Feb. 01, 2019

Common Stock [Member]

Dec. 31, 2019

Sep. 30, 2019

Jun. 28, 2019

Mar. 29, 2019

Common Stock [Member]

Ordinary Taxable Dividend Per Share [Member]

Non-Taxable Distribution

$ 0.321

$ 0.301

17.1875

Qualified Taxable Dividend Per Share [Member]

0.879

0.824

^[1]

0.1490

Long-Term Capital Gain Distribution Per Share [Member]

^[1]

0.008

0.007

17.0385

$ 0.871

$ 0.817

[1]	Qualified taxable dividend and section 199A dividend amounts are included in ordinary taxable dividend amounts.

Stockholders' Equity Declaration and Payment of Dividends (Details) - USD ($)
$ / shares in Units, $ in Millions

3 Months Ended

12 Months Ended

Dec. 31, 2019

Sep. 30, 2019

Jun. 30, 2019

Mar. 31, 2019

Dec. 31, 2018

Dec. 31, 2019

Dec. 31, 2018

Dec. 31, 2017

Dividends, Common Stock, Cash

$ 502

^[1]

$ 472

^[1]

$ 471

^[1]

$ 471

^[1]

$ (1,917)

$ (1,785)

$ (1,513)

$ 1.20

$ 1.125

Dividends, Preferred Stock, Cash

$ 17.1875

$ 28

$ (113)

$ (58)

Common Stock [Member]

Dividends Payable, Date Declared

Oct. 14, 2019

Aug. 08, 2019

May 16, 2019

Feb. 21, 2019

Dividends Payable, Date of Record

Dec. 13, 2019

Sep. 13, 2019

Jun. 14, 2019

Mar. 15, 2019

Dec. 31, 2019

Sep. 30, 2019

Jun. 28, 2019

Mar. 29, 2019

Preferred Stock [Member]

Dividends Payable, Date Declared

Dec. 09, 2019

Sep. 18, 2019

Jun. 17, 2019

Mar. 19, 2019

Dec. 11, 2018

Dividends Payable, Date of Record

Jan. 15, 2020

Oct. 15, 2019

Jul. 15, 2019

Apr. 15, 2019

Jan. 15, 2019

Feb. 03, 2020

Nov. 01, 2019

Aug. 01, 2019

May 01, 2019

Feb. 01, 2019

[1]	Inclusive of dividends accrued for holders of unvested RSUs, which will be paid when and if the RSUs vest

Stock-based Compensation (Narrative) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future issuance (in shares)	9.0
Vesting Period	3 years
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future issuance (in shares)	3.0
Shares granted, number of shares	1.0
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted, weighted-average grant-date fair value (in dollars per share)	$ 106.55	$ 91.52	$ 73.52
Weighted-average requisite service period (years)	2 years 4 months 24 days
Restricted stock or unit expense	$ 96	$ 90	$ 89
Compensation cost not yet recognized	$ 89
Period for recognition	1 year
Performance Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted, number of shares	0.5
Time Vesting Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted, number of shares	0.8

Stock-based Compensation (Summary of Restricted Stock Awards Activity) (Details) - Restricted Stock Units (RSUs) [Member] shares in Millions	12 Months Ended
	Dec. 31, 2019 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	1
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	(1)
Shares outstanding at the end of year, number of shares	3
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested Options Forfeited, Number of Shares	0

Stock-based Compensation (Summary of the Assumptions Used in the Monte Carlo Simulation to Determine the Grant-Date Fair Value) (Details)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Payment Arrangement, Noncash Expense [Abstract]
Risk-free rate	2.50%	2.40%	1.50%
Expected volatility	18.00%	18.00%	18.00%
Expected dividend rate	4.00%	3.80%	4.40%

Stock-based Compensation (Summary of Restricted Stock Awards Vested) (Details) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Payment Arrangement, Noncash Expense [Abstract]
Total shares vested	1.0	1.0	1.0
Fair value on vesting date	$ 135	$ 107	$ 67

Stock-based Compensation (Stock-Based Compensation Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based Payment Arrangement, Expense	$ 116	$ 108	$ 96
Site Rental Cost of Operations [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based Payment Arrangement, Expense	19	17	15
Services and Other Costs of Operations [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based Payment Arrangement, Expense	7	8	5
Selling, General and Administrative Expenses [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based Payment Arrangement, Expense	$ 90	$ 83	$ 76

Commitments and Contingencies Tower purchase option (Details)	Dec. 31, 2019
Subject to Capital Lease with Sprint, TMO, or AT&T [Member]
Tower count as a percentage of total towers	53.00%

Leases Lessee Operating Leases (Details)
$ in Millions

12 Months Ended

Dec. 31, 2019

USD ($)

Operating Lease, Expense

$ 648

^[1]

Variable Lease, Cost

133

^[2]

Lease, Cost

$ 781

^[3]

[1]	Represents the Company's operating lease expense related to its ROU assets for the twelve months ended December 31, 2019.
[2]	Represents the Company's expense related to contingent payments for operating leases (such as payments based on revenues derived from the communications infrastructure located on the leased asset) for the twelve months ended December 31, 2019. Such contingencies are recognized as expense in the period they are resolved.
[3]	Excludes those direct operating expenses accounted for pursuant to accounting guidance outside the scope of ASC 842.

Leases Lessee Finance Leases (Details) $ in Millions	12 Months Ended
Leases Lessee Finance Leases (Details) $ in Millions	Dec. 31, 2019 USD ($)
Accumulated Amortization Related to Finance Leases	$ 2,100
Finance Lease, Right-of-Use Asset, Amortization	216
Property, Plant and Equipment [Member]
Finance Lease, Right-of-Use Asset	$ 4,400

Leases Other Lessee Information (Details)	Dec. 31, 2019
Leases [Abstract]
Operating Lease, Weighted Average Remaining Lease Term	17 years
Lessee, Operating Lease, Discount Rate	4.30%

Leases Maturities of Lease Liabilities (Details)
$ in Millions

Dec. 31, 2019

USD ($)

^[1]

Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months

$ 534

Lessee, Operating Lease, Liability, Payments, Due Year Two

528

Lessee, Operating Lease, Liability, Payments, Due Year Three

524

Lessee, Operating Lease, Liability, Payments, Due Year Four

520

Lessee, Operating Lease, Liability, Payments, Due Year Five

517

Lessee, Operating Lease, Liability, Payments, Due after Year Five

6,357

Lessee, Operating Lease, Liability, Payments, Due

8,980

Lessee, Operating Lease, Liability, Undiscounted Excess Amount

(3,170)

Operating Lease, Liability

$ 5,810

[1]

Leases Comparative Information (Details) $ in Millions	Dec. 31, 2018 USD ($)
Leases [Abstract]
Operating Leases, Future Minimum Payments Due, Next Twelve Months	$ 640
Operating Leases, Future Minimum Payments, Due in Two Years	631
Operating Leases, Future Minimum Payments, Due in Three Years	628
Operating Leases, Future Minimum Payments, Due in Four Years	623
Operating Leases, Future Minimum Payments, Due in Five Years	619
Operating Leases, Future Minimum Payments, Due Thereafter	8,054
Operating Leases, Future Minimum Payments Due	$ 11,195

Operating Segments and Concentrations of Credit Risk (Major Customers) (Details)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Concentration Risk, Percentage	76.00%	74.00%	86.00%
AT&T [Member]
Concentration Risk, Percentage	21.00%	20.00%	25.00%
T-Mobile [Member]
Concentration Risk, Percentage	22.00%	19.00%	22.00%
Verizon Wireless [Member]
Concentration Risk, Percentage	19.00%	20.00%	16.00%
Sprint [Member]
Concentration Risk, Percentage	14.00%	15.00%	23.00%

Operating Segments and Concentrations of Credit Risk Operating Segment Results (Details)
$ in Millions

3 Months Ended

6 Months Ended

9 Months Ended

12 Months Ended

Dec. 31, 2019

USD ($)

Sep. 30, 2019

USD ($)

Jun. 30, 2019

USD ($)

Mar. 31, 2019

USD ($)

Dec. 31, 2018

USD ($)

Sep. 30, 2018

USD ($)

Jun. 30, 2018

USD ($)

Mar. 31, 2018

USD ($)

Jun. 30, 2019

USD ($)

Jun. 30, 2018

USD ($)

Sep. 30, 2019

USD ($)

Sep. 30, 2018

USD ($)

Dec. 31, 2019

USD ($)

Dec. 31, 2018

USD ($)

Dec. 31, 2017

USD ($)

Tower Count

40,000

Fiber Miles

80,000

$ 1,287

$ 1,263

$ 1,242

$ 1,231

$ 1,205

$ 1,188

$ 1,171

$ 2,505

$ 2,360

$ 3,793

$ 3,565

$ 5,093

$ 4,796

$ 3,734

195

184

166

175

156

131

113

350

244

544

399

670

574

521

$ 1,426

^[1]

1,482

^[1]

1,447

^[1]

1,408

^[1]

1,406

^[1]

1,361

^[1]

1,319

^[1]

1,284

^[1]

2,855

2,604

4,337

3,964

5,763

5,370

4,255

^[2]

369

365

361

353

355

347

726

702

1,095

1,057

1,462

1,410

1,144

146

137

124

135

^[2]

118

^[2]

261

183

^[2]

407

301

^[2]

524

^[2]

434

^[2]

399

^[2]

150

155

152

145

138

134

307

273

457

418

614

563

426

117

103

388

393

394

389

385

379

374

787

753

1,175

1,138

1,572

1,527

1,241

Interest Expense, Debt

(173)

(169)

(168)

(164)

(160)

(158)

(160)

(337)

(318)

(510)

(478)

683

642

591

247

220

199

206

156

175

104

419

279

667

434

881

641

392

(480)

(370)

(998)

(762)

(1,537)

(1,239)

(2,057)

(1,739)

(1,217)

38,457

38,321

$ 38,124

37,755

32,762

32,621

32,351

32,227

$ 38,124

32,351

38,321

32,621

38,457

32,762

Amortization of prepaid lease purchase price adjustments

10,078

$ 10,078

10,078

$ 10,074

$ 10,075

$ 10,078

$ 10,074

10,078

10,021

Towers [Member]

3,389

3,196

2,965

653

558

471

4,042

3,754

3,436

864

848

845

Segment cost of operations

506

415

353

1,370

^[3],[4]

1,263

^[5],[6]

1,198

^[7],[8]

Segment site rental gross margin

2,525

2,348

2,120

Segment services and other gross margin

147

143

118

^[4]

110

^[6]

^[8]

Segment Operating Profit

2,576

2,381

2,144

543

440

407

22,357

17,644

22,357

17,644

17,918

5,127

Fiber [Member]

1,704

1,600

769

1,721

1,616

819

559

525

264

Segment cost of operations

570

^[3],[4]

536

^[5],[6]

305

^[7],[8]

Segment site rental gross margin

1,145

1,075

505

Segment services and other gross margin

195

^[4]

179

^[6]

^[8]

Segment Operating Profit

956

901

425

1,473

1,264

782

15,389

14,512

15,389

14,512

13,669

Corporate and Other [Member]

4,951

4,894

233

^[4]

191

^[6]

167

^[8]

116

108

1,572

1,527

1,241

Interest Expense, Debt

683

642

591

Other Expenses

^[9]

173

^[10]

^[11]

711

606

711

606

619

Consolidated Entities [Member]

5,093

4,796

3,734

670

574

521

5,763

5,370

4,255

Segment Site Rental Cost of Operations

1,373

1,423

1,109

Segment Services and Other Cost of Operations

426

394

517

Segment cost of operations

1,940

^[3],[4]

1,799

^[5],[6]

1,503

^[7],[8]

Segment site rental gross margin

3,670

3,423

2,625

Segment services and other gross margin

153

148

127

Segment General and Administrative Expenses

289

^[6]

183

^[8]

^[4]

291

Segment Operating Profit

3,532

3,282

2,569

116

108

1,572

1,527

1,241

Interest Expense, Debt

683

642

591

Other Expenses

^[9]

173

^[10]

^[11]

881

641

392

2,057

1,739

1,217

38,457

32,762

38,457

32,762

32,206

$ 10,078

10,078

10,021

Cost of Sales [Member]

Selling, General and Administrative Expenses [Member]

$ 25

$ 20

Supplemental Cash Flow Information [Abstract]

$ 90

[1]	The sum of quarterly information may not agree to year-to-date information due to rounding.
[2]	Exclusive of depreciation, amortization and accretion shown separately.
[3]	Exclusive of depreciation, amortization and accretion shown separately
[4]	Segment cost of operations for the year ended December 31, 2019 excludes (1) stock-based compensation expense of $26 million and (2) prepaid lease purchase price adjustments of $20 million. For the year ended December 31, 2019, segment selling, general and administrative expenses exclude stock-based compensation expense of $90 million.
[5]	Exclusive of depreciation, amortization and accretion shown separately
[6]	Segment cost of operations for the year ended December 31, 2018 excludes (1) stock-based compensation expense of $25 million and (2) prepaid lease purchase price adjustments of $20 million. For the year ended December 31, 2018, segment selling, general and administrative expenses exclude stock-based compensation expense of $83 million.
[7]	Exclusive of depreciation, amortization and accretion shown separately
[8]	Segment cost of operations for the year ended December 31, 2017 excludes (1) stock-based compensation expense of $20 million and (2) prepaid lease purchase price adjustments of $20 million. For the year ended December 31, 2017, segment selling, general and administrative expenses exclude stock-based compensation expense of $76 million.
[9]	See consolidated statement of operations for further information.
[10]	See consolidated statement of operations for further information.
[11]	See consolidated statement of operations for further information.

Supplemental Cash Flow Information (Details) - USD ($)
$ in Millions

12 Months Ended

Dec. 31, 2019

Dec. 31, 2018

Dec. 31, 2017

Operating Lease, Payments

^[1],[2]

$ 541

$ 0

Interest paid

661

619

547

Income taxes paid (refund)

Right-of-Use Asset Obtained in Exchange for Operating Lease Liability

^[2]

431

Increase (Decrease) in accounts payable for purchases of property and equipment

Purchase of property and equipment under capital leases and installment purchases

Preferred Stock Dividends Accrued but not Paid

$ 0

$ 28

[1]	Excludes the Company's contingent payments pursuant to operating leases, which are recorded as expense in the period such contingencies are resolved.
[2]	See "Recently Adopted Accounting Pronouncements" in note 3 for a discussion of the recently adopted new lease standard.

Supplemental Cash Flow Information Reconciliation to Statement of Cash Flows (Details) - USD ($) $ in Millions	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Supplemental Cash Flow Elements [Abstract]
Cash and cash equivalents	$ 196	$ 182	$ 288	$ 245	$ 277	$ 323	$ 206	$ 220	$ 314
Restricted cash	137	138	136	158	131	125	125	120	121
Restricted Cash, Noncurrent	5				5				5
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 338	$ 325	$ 429	$ 408	$ 413	$ 453	$ 336	$ 345	$ 440	$ 697

Quarterly Financial Information (Unaudited) (Details) - USD ($)
$ / shares in Units, $ in Millions

3 Months Ended

6 Months Ended

9 Months Ended

12 Months Ended

Dec. 31, 2019

Sep. 30, 2019

Jun. 30, 2019

^[1]

Mar. 31, 2019

^[1]

Dec. 31, 2018

^[1]

Sep. 30, 2018

^[1]

Jun. 30, 2018

^[1]

Mar. 31, 2018

^[1]

Jun. 30, 2019

Jun. 30, 2018

Sep. 30, 2019

Sep. 30, 2018

Dec. 31, 2019

Dec. 31, 2018

Dec. 31, 2017

Selected Quarterly Financial Information [Abstract]

$ 1,426

^[1]

$ 1,482

^[1]

$ 1,447

$ 1,408

$ 1,406

$ 1,361

$ 1,319

$ 1,284

$ 2,855

$ 2,604

$ 4,337

$ 3,964

$ 5,763

$ 5,370

$ 4,255

Gains (losses) on retirement of long-term obligations

379

^[1]

423

^[1]

389

367

346

335

756

670

1,180

1,014

1,559

1,383

967

^[1]

(1)

(32)

(3)

(71)

(2)

(74)

(2)

(106)

(2)

^[2]

(106)

^[2]

(4)

^[3]

Net income (loss) attributable to CCIC stockholders

(6)

^[1]

(5)

(4)

(6)

(5)

(4)

(10)

(9)

(15)

(13)

(21)

(19)

(26)

^[1]

$ 208

Net income (loss) attributable to CCIC common stockholders, per common share:

$ 242

^[1]

$ 216

$ 193

$ 201

$ 151

$ 170

$ 100

$ 409

$ 270

$ 652

$ 421

$ 860

$ 622

$ 366

$ 0.43

^[1]

$ 0.51

^[1]

$ 0.45

$ 0.40

$ 0.42

$ 0.30

$ 0.34

$ 0.18

$ 0.85

$ 0.52

$ 1.36

$ 0.81

$ 1.80

$ 1.23

$ 0.80

Cash and cash equivalents

$ 0.43

^[1]

$ 0.51

^[1]

$ 0.45

$ 0.40

$ 0.42

$ 0.30

$ 0.34

$ 0.18

$ 0.84

$ 0.52

$ 1.36

$ 0.81

$ 1.79

$ 1.23

$ 0.80

[1]	The sum of quarterly information may not agree to year-to-date information due to rounding.
[2]	Inclusive of the write-off of the respective deferred financing costs.
[3]	The losses represent write-off of deferred financing costs.

Quarterly Financial Information Restatement of 2019 Quarterly Balance Sheet (Details) - USD ($)
$ in Millions

Dec. 31, 2019

Sep. 30, 2019

Jun. 30, 2019

Mar. 31, 2019

Dec. 31, 2018

Sep. 30, 2018

Jun. 30, 2018

Mar. 31, 2018

Dec. 31, 2017

Dec. 31, 2016

$ 196

$ 182

$ 288

$ 245

$ 277

$ 323

$ 206

$ 220

$ 314

Restricted cash

137

138

136

158

131

125

120

121

Receivables, net of allowance

596

667

591

545

501

471

455

402

Prepaid expenses

^[1]

107

111

172

182

197

175

Other current assets

168

167

168

160

148

181

157

Assets, Current

1,204

1,253

1,294

1,193

1,229

1,249

1,164

1,074

Deferred site rental receivables

1,424

1,413

1,391

1,373

1,366

1,357

1,303

1,304

Operating Lease, Right-of-Use Asset

14,666

14,393

14,128

13,860

13,653

13,410

13,195

13,028

^[1]

6,133

6,112

6,053

5,969

Site rental contracts and tenant relationships, net

10,078

10,074

10,075

10,021

4,764

5,209

Other intangible assets, net

^[1]

4,968

5,074

5,178

307

5,620

5,729

5,854

Long-term prepaid rent and other assets, net

^[1]

116

104

920

911

885

892

38,457

38,321

38,124

37,755

32,762

32,621

32,351

32,227

Accounts payable

334

368

337

311

313

302

272

248

Accrued interest

169

110

166

107

148

101

154

104

Other accrued liabilities

657

638

607

598

587

568

554

539

^[1]

361

335

305

262

351

306

272

240

Current maturities of debt and other obligations

100

107

111

112

130

Current portion of operating lease liabilities

^[1]

299

296

289

287

Debt and other long-term obligations

1,920

1,847

1,802

1,661

1,506

1,388

1,364

1,261

18,021

17,750

17,471

17,120

16,575

16,313

15,844

15,616

Operating lease liabilities

^[1]

5,511

5,480

5,427

5,338

^[1]

2,516

2,458

2,411

2,369

3,110

3,074

3,014

2,946

27,968

27,535

27,111

26,488

21,191

20,775

20,222

19,823

Common stock, $0.01 par value

6.875% Mandatory Convertible Preferred Stock, Series A, $0.01 par value

Additional paid-in capital

17,855

17,829

17,801

17,769

17,767

17,743

17,711

17,690

Accumulated other comprehensive income (loss)

(5)

(4)

(7,365)

(7,042)

(6,787)

(6,501)

(6,195)

(5,896)

(5,581)

(5,286)

(4,919)

$ (3,714)

10,489

10,786

11,013

11,267

11,571

11,846

12,129

12,404

11,925

7,222

$ 38,457

38,321

38,124

37,755

32,762

32,621

32,351

32,227

14,416

14,151

13,883

13,676

13,433

13,218

13,051

38,344

38,147

37,778

32,785

32,644

32,374

32,250

525

503

502

498

484

476

465

1,734

1,698

1,565

1,417

1,304

1,286

1,187

^[1]

2,055

2,028

2,009

2,759

2,732

2,678

2,615

27,019

26,624

26,032

20,751

20,349

19,808

19,418

(6,503)

(6,277)

(6,022)

(5,732)

(5,447)

(5,144)

(4,858)

(4,505)

(3,379)

11,325

11,523

11,746

12,034

12,295

12,566

12,832

12,339

7,557

38,344

38,147

37,778

32,785

32,644

32,374

32,250

113

104

113

104

^[1]

403

383

360

351

342

336

331

516

487

456

440

426

414

405

(516)

(487)

(456)

(440)

(426)

(414)

(405)

(391)

(332)

(516)

(487)

(456)

(440)

(426)

(414)

(405)

(391)

(332)

(23)

(23)

^[1]

(23)

(3)

(23)

$ (23)

$ (3)

Cash and cash equivalents

$ (23)

[1]	See "Recently Adopted Accounting Pronouncements" in note 3 to the consolidated financial statements for a discussion of the recently adopted new lease standard.

Quarterly Financial Information Restatement of 2018 Quarterly Balance Sheet (Details) - USD ($)
$ in Millions

Dec. 31, 2019

Sep. 30, 2019

Jun. 30, 2019

Mar. 31, 2019

Dec. 31, 2018

Sep. 30, 2018

Jun. 30, 2018

Mar. 31, 2018

Dec. 31, 2017

Dec. 31, 2016

$ 196

$ 182

$ 288

$ 245

$ 277

$ 323

$ 206

$ 220

$ 314

Restricted cash

137

138

136

158

131

125

120

121

Receivables, net of allowance

596

667

591

545

501

471

455

402

Prepaid expenses

^[1]

107

111

172

182

197

175

Other current assets

168

167

168

160

148

181

157

Assets, Current

1,204

1,253

1,294

1,193

1,229

1,249

1,164

1,074

Deferred site rental receivables

1,424

1,413

1,391

1,373

1,366

1,357

1,303

1,304

Operating Lease, Right-of-Use Asset

14,666

14,393

14,128

13,860

13,653

13,410

13,195

13,028

^[1]

6,133

6,112

6,053

5,969

Site rental contracts and tenant relationships, net

10,078

10,074

10,075

10,021

4,764

5,209

Other intangible assets, net

^[1]

4,968

5,074

5,178

307

5,620

5,729

5,854

Long-term prepaid rent and other assets, net

^[1]

116

104

920

911

885

892

38,457

38,321

38,124

37,755

32,762

32,621

32,351

32,227

Accounts payable

334

368

337

311

313

302

272

248

Accrued interest

169

110

166

107

148

101

154

104

Other accrued liabilities

657

638

607

598

587

568

554

539

^[1]

361

335

305

262

351

306

272

240

Current maturities of debt and other obligations

100

107

111

112

130

Current portion of operating lease liabilities

^[1]

299

296

289

287

Debt and other long-term obligations

1,920

1,847

1,802

1,661

1,506

1,388

1,364

1,261

18,021

17,750

17,471

17,120

16,575

16,313

15,844

15,616

Operating lease liabilities

^[1]

5,511

5,480

5,427

5,338

^[1]

2,516

2,458

2,411

2,369

3,110

3,074

3,014

2,946

27,968

27,535

27,111

26,488

21,191

20,775

20,222

19,823

Common stock, $0.01 par value

6.875% Mandatory Convertible Preferred Stock, Series A, $0.01 par value

Additional paid-in capital

17,855

17,829

17,801

17,769

17,767

17,743

17,711

17,690

Accumulated other comprehensive income (loss)

(5)

(4)

(7,365)

(7,042)

(6,787)

(6,501)

(6,195)

(5,896)

(5,581)

(5,286)

(4,919)

$ (3,714)

10,489

10,786

11,013

11,267

11,571

11,846

12,129

12,404

11,925

7,222

$ 38,457

38,321

38,124

37,755

32,762

32,621

32,351

32,227

14,416

14,151

13,883

13,676

13,433

13,218

13,051

38,344

38,147

37,778

32,785

32,644

32,374

32,250

525

503

502

498

484

476

465

1,734

1,698

1,565

1,417

1,304

1,286

1,187

^[1]

2,055

2,028

2,009

2,759

2,732

2,678

2,615

27,019

26,624

26,032

20,751

20,349

19,808

19,418

(6,503)

(6,277)

(6,022)

(5,732)

(5,447)

(5,144)

(4,858)

(4,505)

(3,379)

11,325

11,523

11,746

12,034

12,295

12,566

12,832

12,339

7,557

38,344

38,147

37,778

32,785

32,644

32,374

32,250

113

104

113

104

^[1]

403

383

360

351

342

336

331

516

487

456

440

426

414

405

(516)

(487)

(456)

(440)

(426)

(414)

(405)

(391)

(332)

(516)

(487)

(456)

(440)

(426)

(414)

(405)

(391)

(332)

(23)

(23)

^[1]

(23)

(3)

(23)

$ (23)

$ (3)

$ (23)

[1]	See "Recently Adopted Accounting Pronouncements" in note 3 to the consolidated financial statements for a discussion of the recently adopted new lease standard.

Quarterly Financial Information Restatement of 2019 Statement of Operations (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions

3 Months Ended

6 Months Ended

9 Months Ended

12 Months Ended

Dec. 31, 2019

^[1]

Sep. 30, 2019

Jun. 30, 2019

Mar. 31, 2019

Dec. 31, 2018

Sep. 30, 2018

Jun. 30, 2018

Mar. 31, 2018

Jun. 30, 2019

Jun. 30, 2018

Sep. 30, 2019

Sep. 30, 2018

Dec. 31, 2019

Dec. 31, 2018

Dec. 31, 2017

$ 1,287

$ 1,263

$ 1,242

$ 1,231

$ 1,205

$ 1,188

$ 1,171

$ 2,505

$ 2,360

$ 3,793

$ 3,565

$ 5,093

$ 4,796

$ 3,734

195

184

166

175

156

131

113

350

244

544

399

670

574

521

$ 1,426

1,482

^[1]

1,447

^[1]

1,408

^[1]

1,406

^[1]

1,361

^[1]

1,319

^[1]

1,284

^[1]

2,855

2,604

4,337

3,964

5,763

5,370

4,255

Site rental

^[2]

369

365

361

353

355

347

726

702

1,095

1,057

1,462

1,410

1,144

146

137

124

135

^[2]

118

^[2]

261

183

^[2]

407

301

^[2]

524

^[2]

434

^[2]

399

^[2]

150

155

152

145

138

134

307

273

457

418

614

563

426

Acquisition and integration costs

388

393

394

389

385

379

374

787

753

1,175

1,138

1,572

1,527

1,241

1,059

1,058

1,041

1,039

1,015

984

949

2,099

1,934

3,157

2,950

4,204

3,987

3,288

Interest expense and amortization of deferred financing costs

379

423

^[1]

389

^[1]

367

^[1]

367

^[1]

346

^[1]

335

^[1]

335

^[1]

756

670

1,180

1,014

1,559

1,383

967

(173)

(169)

(168)

(164)

(160)

(158)

(160)

(337)

(318)

(510)

(478)

683

642

591

Gains (losses) on retirement of long-term obligations

^[1]

(1)

^[1]

(1)

^[1]

(32)

^[1]

(3)

^[1]

(71)

^[1]

(2)

(74)

(2)

(106)

(2)

^[3]

(106)

^[3]

(4)

^[4]

Interest income

Other income (expense)

(5)

(1)

(6)

247

220

199

206

156

175

104

419

279

667

434

881

641

392

$ (6)

(5)

(4)

^[1]

(6)

^[1]

(5)

^[1]

(5)

^[1]

(5)

^[1]

(4)

^[1]

(10)

(9)

(15)

(13)

(21)

(19)

(26)

242

^[1]

216

^[1]

193

^[1]

201

^[1]

151

^[1]

170

^[1]

100

^[1]

409

270

652

421

860

622

366

193

100

409

270

652

421

860

622

366

Net Income (Loss) Available to Common Stockholders, Basic

(28)

(57)

(85)

(113)

(58)

214

188

165

173

123

142

352

213

567

336

747

509

308

(1)

Comprehensive Income (Loss), Net of Tax, Attributable to Parent

(1)

^[5]

$ 242

$ 216

$ 193

$ 201

$ 151

$ 169

$ 100

$ 409

$ 269

$ 652

$ 420

$ 860

$ 621

$ 368

Net income (loss) attributable to CCIC common stockholders, per common share:

$ 0.43

$ 0.51

^[1]

$ 0.45

^[1]

$ 0.40

^[1]

$ 0.42

^[1]

$ 0.30

^[1]

$ 0.34

^[1]

$ 0.18

^[1]

$ 0.85

$ 0.52

$ 1.36

$ 0.81

$ 1.80

$ 1.23

$ 0.80

$ 0.43

$ 0.51

^[1]

$ 0.45

^[1]

$ 0.40

^[1]

$ 0.42

^[1]

$ 0.30

^[1]

$ 0.34

^[1]

$ 0.18

^[1]

$ 0.84

$ 0.52

$ 1.36

$ 0.81

$ 1.79

$ 1.23

$ 0.80

Basic (in shares)

416

415

409

415

412

416

413

416

413

382

Diluted (in shares)

418

417

416

410

417

413

418

414

418

415

383

$ 1,260

$ 1,238

$ 1,219

$ 1,209

$ 1,184

$ 1,169

$ 1,153

$ 2,457

$ 2,323

$ 3,718

$ 3,507

$ 4,716

$ 3,669

254

240

207

210

191

161

146

447

307

700

497

707

687

1,514

1,478

1,426

1,419

1,375

1,330

1,299

2,904

2,630

4,418

4,004

5,423

4,356

147

138

125

119

^[2]

263

185

^[2]

410

304

^[2]

437

420

389

390

1,176

1,528

1,242

1,061

1,059

1,042

1,040

1,016

985

950

2,101

1,936

3,161

2,953

3,991

3,310

453

419

384

379

359

345

349

803

694

1,257

1,051

1,432

1,046

277

250

216

218

169

185

118

466

303

744

471

690

471

272

246

210

213

164

180

114

456

294

729

458

671

445

Net Income (Loss) Available to Common Stockholders, Basic

210

114

456

294

729

458

671

445

244

218

182

185

136

152

399

237

644

373

558

387

Comprehensive Income (Loss), Net of Tax, Attributable to Parent

$ 272

$ 246

$ 210

$ 213

$ 164

$ 179

$ 114

$ 456

$ 293

$ 729

$ 457

$ 670

$ 447

Net income (loss) attributable to CCIC common stockholders, per common share:

$ 0.59

$ 0.52

$ 0.44

$ 0.45

$ 0.33

$ 0.37

$ 0.21

$ 0.96

$ 0.58

$ 1.55

$ 0.90

$ 1.35

$ 1.01

$ 0.58

$ 0.52

$ 0.44

$ 0.33

$ 0.36

$ 0.21

$ 0.95

$ 0.57

$ 1.54

$ 0.90

$ 1.34

$ 1.01

$ 27

$ 25

$ 23

$ 22

$ 21

$ 19

$ 18

$ 48

$ 37

$ 75

$ 58

$ 80

$ 65

(57)

(55)

(40)

(35)

(33)

(28)

(32)

(95)

(60)

(152)

(93)

(128)

(124)

(30)

(17)

(13)

(12)

(9)

(14)

(47)

(23)

(77)

(35)

(48)

(59)

^[2]

(30)

(17)

(13)

(12)

(9)

(14)

(47)

(23)

(77)

(35)

(48)

(59)

(30)

(17)

(13)

(12)

(9)

(14)

(47)

(23)

(77)

(35)

(48)

(59)

(30)

(17)

(13)

(12)

(9)

(14)

(47)

(23)

(77)

(35)

(48)

(59)

Net Income (Loss) Available to Common Stockholders, Basic

(17)

(13)

(14)

(47)

(23)

(77)

(35)

(48)

(59)

(30)

(17)

(13)

(12)

(9)

(14)

(47)

(23)

(77)

(35)

(48)

(59)

Comprehensive Income (Loss), Net of Tax, Attributable to Parent

$ (30)

$ (17)

$ (13)

$ (12)

$ (9)

$ (14)

$ (47)

$ (23)

$ (77)

$ (35)

$ (48)

$ (59)

Net income (loss) attributable to CCIC common stockholders, per common share:

$ (0.08)

$ (0.07)

$ (0.04)

$ (0.03)

$ (0.11)

$ (0.06)

$ (0.19)

$ (0.09)

$ (0.12)

$ (0.16)

$ (0.07)

$ (0.04)

$ (0.02)

$ (0.03)

$ (0.02)

$ (0.03)

$ (0.11)

$ (0.05)

$ (0.18)

$ (0.09)

$ (0.11)

$ (0.16)

$ 0

$ (2)

$ (1)

(2)

(1)

$ (2)

(3)

$ (4)

(5)

(42)

(2)

(1)

(2)

(1)

(2)

(3)

(4)

(5)

(42)

(1)

^[2]

(1)

^[2]

(1)

^[2]

(2)

^[2]

(3)

^[2]

(3)

(21)

(1)

$ (2)

$ (1)

(1)

(2)

(4)

(3)

(4)

(22)

(1)

(2)

(1)

(20)

(1)

(2)

(1)

(20)

(1)

(2)

(1)

(20)

Net Income (Loss) Available to Common Stockholders, Basic

$ 0

(1)

$ 0

(2)

(1)

(20)

(1)

(2)

(1)

(20)

Comprehensive Income (Loss), Net of Tax, Attributable to Parent

$ 1

$ (1)

$ 0

$ (1)

$ (2)

$ (1)

$ (20)

Net income (loss) attributable to CCIC common stockholders, per common share:

$ 0

$ (0.05)

$ 0

$ (0.05)

[1]	The sum of quarterly information may not agree to year-to-date information due to rounding.
[2]	Exclusive of depreciation, amortization and accretion shown separately.
[3]	Inclusive of the write-off of the respective deferred financing costs.
[4]	The losses represent write-off of deferred financing costs.
[5]	See the consolidated statement of operations and comprehensive income (loss) for the components of "total other comprehensive income (loss)."

Quarterly Financial Information Restatement of 2018 Statement of Operations (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions

3 Months Ended

6 Months Ended

9 Months Ended

12 Months Ended

Dec. 31, 2019

^[1]

Sep. 30, 2019

Jun. 30, 2019

Mar. 31, 2019

Dec. 31, 2018

Sep. 30, 2018

Jun. 30, 2018

Mar. 31, 2018

Jun. 30, 2019

Jun. 30, 2018

Sep. 30, 2019

Sep. 30, 2018

Dec. 31, 2019

Dec. 31, 2018

Dec. 31, 2017

$ 1,287

$ 1,263

$ 1,242

$ 1,231

$ 1,205

$ 1,188

$ 1,171

$ 2,505

$ 2,360

$ 3,793

$ 3,565

$ 5,093

$ 4,796

$ 3,734

195

184

166

175

156

131

113

350

244

544

399

670

574

521

$ 1,426

1,482

^[1]

1,447

^[1]

1,408

^[1]

1,406

^[1]

1,361

^[1]

1,319

^[1]

1,284

^[1]

2,855

2,604

4,337

3,964

5,763

5,370

4,255

Site rental

^[2]

369

365

361

353

355

347

726

702

1,095

1,057

1,462

1,410

1,144

146

137

124

135

^[2]

118

^[2]

261

183

^[2]

407

301

^[2]

524

^[2]

434

^[2]

399

^[2]

388

393

394

389

385

379

374

787

753

1,175

1,138

1,572

1,527

1,241

150

155

152

145

138

134

307

273

457

418

614

563

426

Acquisition and integration costs

1,059

1,058

1,041

1,039

1,015

984

949

2,099

1,934

3,157

2,950

4,204

3,987

3,288

Interest expense and amortization of deferred financing costs

379

423

^[1]

389

^[1]

367

^[1]

367

^[1]

346

^[1]

335

^[1]

335

^[1]

756

670

1,180

1,014

1,559

1,383

967

(173)

(169)

(168)

(164)

(160)

(158)

(160)

(337)

(318)

(510)

(478)

683

642

591

Gains (losses) on retirement of long-term obligations

^[1]

(1)

^[1]

(1)

^[1]

(32)

^[1]

(3)

^[1]

(71)

^[1]

(2)

(74)

(2)

(106)

(2)

^[3]

(106)

^[3]

(4)

^[4]

Interest income

Other income (expense)

(5)

(1)

(6)

247

220

199

206

156

175

104

419

279

667

434

881

641

392

$ (6)

(5)

(4)

^[1]

(6)

^[1]

(5)

^[1]

(5)

^[1]

(5)

^[1]

(4)

^[1]

(10)

(9)

(15)

(13)

(21)

(19)

(26)

242

^[1]

216

^[1]

193

^[1]

201

^[1]

151

^[1]

170

^[1]

100

^[1]

409

270

652

421

860

622

366

193

100

409

270

652

421

860

622

366

Net Income (Loss) Available to Common Stockholders, Basic

(28)

(57)

(85)

(113)

(58)

214

188

165

173

123

142

352

213

567

336

747

509

308

(1)

Comprehensive Income (Loss), Net of Tax, Attributable to Parent

(1)

^[5]

$ 242

$ 216

$ 193

$ 201

$ 151

$ 169

$ 100

$ 409

$ 269

$ 652

$ 420

$ 860

$ 621

$ 368

Net income (loss) attributable to CCIC common stockholders, per common share:

$ 0.43

$ 0.51

^[1]

$ 0.45

^[1]

$ 0.40

^[1]

$ 0.42

^[1]

$ 0.30

^[1]

$ 0.34

^[1]

$ 0.18

^[1]

$ 0.85

$ 0.52

$ 1.36

$ 0.81

$ 1.80

$ 1.23

$ 0.80

$ 0.43

$ 0.51

^[1]

$ 0.45

^[1]

$ 0.40

^[1]

$ 0.42

^[1]

$ 0.30

^[1]

$ 0.34

^[1]

$ 0.18

^[1]

$ 0.84

$ 0.52

$ 1.36

$ 0.81

$ 1.79

$ 1.23

$ 0.80

Basic (in shares)

416

415

409

415

412

416

413

416

413

382

Diluted (in shares)

418

417

416

410

417

413

418

414

418

415

383

$ 1,260

$ 1,238

$ 1,219

$ 1,209

$ 1,184

$ 1,169

$ 1,153

$ 2,457

$ 2,323

$ 3,718

$ 3,507

$ 4,716

$ 3,669

254

240

207

210

191

161

146

447

307

700

497

707

687

1,514

1,478

1,426

1,419

1,375

1,330

1,299

2,904

2,630

4,418

4,004

5,423

4,356

147

138

125

119

^[2]

263

185

^[2]

410

304

^[2]

437

420

389

390

1,176

1,528

1,242

1,061

1,059

1,042

1,040

1,016

985

950

2,101

1,936

3,161

2,953

3,991

3,310

453

419

384

379

359

345

349

803

694

1,257

1,051

1,432

1,046

277

250

216

218

169

185

118

466

303

744

471

690

471

272

246

210

213

164

180

114

456

294

729

458

671

445

Net Income (Loss) Available to Common Stockholders, Basic

210

114

456

294

729

458

671

445

244

218

182

185

136

152

399

237

644

373

558

387

Comprehensive Income (Loss), Net of Tax, Attributable to Parent

$ 272

$ 246

$ 210

$ 213

$ 164

$ 179

$ 114

$ 456

$ 293

$ 729

$ 457

$ 670

$ 447

Net income (loss) attributable to CCIC common stockholders, per common share:

$ 0.59

$ 0.52

$ 0.44

$ 0.45

$ 0.33

$ 0.37

$ 0.21

$ 0.96

$ 0.58

$ 1.55

$ 0.90

$ 1.35

$ 1.01

$ 0.58

$ 0.52

$ 0.44

$ 0.33

$ 0.36

$ 0.21

$ 0.95

$ 0.57

$ 1.54

$ 0.90

$ 1.34

$ 1.01

$ 27

$ 25

$ 23

$ 22

$ 21

$ 19

$ 18

$ 48

$ 37

$ 75

$ 58

$ 80

$ 65

(57)

(55)

(40)

(35)

(33)

(28)

(32)

(95)

(60)

(152)

(93)

(128)

(124)

(30)

(17)

(13)

(12)

(9)

(14)

(47)

(23)

(77)

(35)

(48)

(59)

^[2]

(30)

(17)

(13)

(12)

(9)

(14)

(47)

(23)

(77)

(35)

(48)

(59)

(30)

(17)

(13)

(12)

(9)

(14)

(47)

(23)

(77)

(35)

(48)

(59)

(30)

(17)

(13)

(12)

(9)

(14)

(47)

(23)

(77)

(35)

(48)

(59)

Net Income (Loss) Available to Common Stockholders, Basic

(17)

(13)

(14)

(47)

(23)

(77)

(35)

(48)

(59)

(30)

(17)

(13)

(12)

(9)

(14)

(47)

(23)

(77)

(35)

(48)

(59)

Comprehensive Income (Loss), Net of Tax, Attributable to Parent

$ (30)

$ (17)

$ (13)

$ (12)

$ (9)

$ (14)

$ (47)

$ (23)

$ (77)

$ (35)

$ (48)

$ (59)

Net income (loss) attributable to CCIC common stockholders, per common share:

$ (0.08)

$ (0.07)

$ (0.04)

$ (0.03)

$ (0.11)

$ (0.06)

$ (0.19)

$ (0.09)

$ (0.12)

$ (0.16)

$ (0.07)

$ (0.04)

$ (0.02)

$ (0.03)

$ (0.02)

$ (0.03)

$ (0.11)

$ (0.05)

$ (0.18)

$ (0.09)

$ (0.11)

$ (0.16)

$ 0

$ (2)

$ (1)

(2)

(1)

$ (2)

(3)

$ (4)

(5)

(42)

(2)

(1)

(2)

(1)

(2)

(3)

(4)

(5)

(42)

(1)

^[2]

(1)

^[2]

(1)

^[2]

(2)

^[2]

(3)

^[2]

(3)

(21)

(1)

$ (2)

$ (1)

(1)

(2)

(4)

(3)

(4)

(22)

(1)

(2)

(1)

(20)

(1)

(2)

(1)

(20)

(1)

(2)

(1)

(20)

Net Income (Loss) Available to Common Stockholders, Basic

$ 0

(1)

$ 0

(2)

(1)

(20)

(1)

(2)

(1)

(20)

Comprehensive Income (Loss), Net of Tax, Attributable to Parent

$ 1

$ (1)

$ 0

$ (1)

$ (2)

$ (1)

$ (20)

Net income (loss) attributable to CCIC common stockholders, per common share:

$ 0

$ (0.05)

$ 0

$ (0.05)

[1]	The sum of quarterly information may not agree to year-to-date information due to rounding.
[2]	Exclusive of depreciation, amortization and accretion shown separately.
[3]	Inclusive of the write-off of the respective deferred financing costs.
[4]	The losses represent write-off of deferred financing costs.
[5]	See the consolidated statement of operations and comprehensive income (loss) for the components of "total other comprehensive income (loss)."

Quarterly Financial Information Restatement of 2019 Statement of Cash Flows (Details) - USD ($)
$ in Millions

3 Months Ended

6 Months Ended

9 Months Ended

12 Months Ended

Dec. 31, 2019

Sep. 30, 2019

Jun. 30, 2019

Mar. 31, 2019

Dec. 31, 2018

Sep. 30, 2018

Jun. 30, 2018

Mar. 31, 2018

Jun. 30, 2019

Jun. 30, 2018

Sep. 30, 2019

Sep. 30, 2018

Dec. 31, 2019

Dec. 31, 2018

Dec. 31, 2017

Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:

$ 193

$ 100

$ 409

$ 270

$ 652

$ 421

$ 860

$ 622

$ 366

(Gains) losses on retirement of long-term obligations

$ 388

$ 393

394

$ 389

$ 385

$ 379

374

787

753

1,175

1,138

1,572

1,527

1,241

$ 0

^[1]

106

^[2]

106

^[2]

^[3]

Amortization of deferred financing costs and other non-cash interest

117

103

Deferred income tax (benefit) provision

Other non-cash adjustments, net

(2)

Changes in assets and liabilities, excluding the effects of acquisitions:

Increase (decrease) in accrued interest

(41)

(28)

(38)

(31)

Increase (decrease) in accounts payable

(5)

(34)

(7)

(43)

179

254

271

234

Decrease (increase) in other assets

(43)

(5)

(89)

(59)

(166)

(74)

(96)

(105)

(19)

(43)

(62)

(91)

(62)

(103)

(71)

(114)

(16)

Net Cash Provided by (Used in) Operating Activities

512

452

1,227

1,110

1,890

1,773

2,698

2,500

2,032

Payments for acquisitions, net of cash acquired

(480)

(370)

(998)

(762)

(1,537)

(1,239)

(2,057)

(1,739)

(1,217)

(10)

(14)

(13)

(18)

(15)

(26)

(17)

(42)

(9,260)

Other investing activities, net

(14)

(7)

(12)

(5)

Net Cash Provided by (Used in) Investing Activities

(489)

(384)

(1,010)

(777)

(1,549)

(1,279)

(2,081)

(1,793)

(10,482)

Proceeds from issuance of long-term debt

996

1,743

995

1,743

1,895

2,743

1,894

2,742

3,093

Principal payments on debt and other long-term obligations

(25)

(32)

(36)

(47)

(59)

(76)

(86)

(105)

(119)

Purchases and redemptions of long-term debt

(12)

(1,318)

(12)

(1,318)

(12)

(2,346)

(12)

(2,346)

Borrowings under revolving credit facility

710

170

1,195

485

1,585

1,290

2,110

1,820

2,820

Payments under revolving credit facility

(1,140)

(1,050)

(1,785)

(1,150)

(2,270)

(1,465)

(2,660)

(1,725)

(1,840)

Proceeds from Issuance of Commercial Paper

500

155

Payments for financing costs

(10)

(15)

(14)

(20)

(24)

(33)

(24)

(31)

(29)

Net proceeds from issuance of common stock

843

841

4,221

Net proceeds from issuance of preferred stock

1,608

Purchases of common stock

(42)

(33)

(43)

(34)

(44)

(34)

(44)

(34)

(23)

Dividends/distributions paid on common stock

(477)

(443)

(944)

(879)

(1,415)

(1,315)

(1,912)

(1,782)

(1,509)

Dividends paid on preferred stock

(28)

(57)

(85)

(113)

(30)

Net Cash Provided by (Used in) Financing Activities

(28)

(163)

(201)

(436)

(429)

(480)

(692)

(733)

8,192

Net Cash Provided by (Used in) Continuing Operations

(5)

(95)

(103)

(88)

(75)

(26)

(258)

Effect of exchange rate changes on cash

(1)

Cash, Cash Equivalents and Restricted Cash - Beginning of Period

325

429

408

413

453

336

345

440

413

440

413

440

413

440

697

Cash, Cash Equivalents and Restricted Cash - End of Period

338

325

429

408

413

453

336

345

429

336

325

453

338

413

440

Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:

210

114

456

294

729

458

671

445

Changes in assets and liabilities, excluding the effects of acquisitions:

389

390

1,176

1,528

1,242

(24)

(57)

102

144

223

175

Net Cash Provided by (Used in) Operating Activities

512

452

1,227

1,111

1,891

1,775

2,502

2,043

Net Cash Provided by (Used in) Investing Activities

(763)

(1,538)

(1,241)

(1,741)

(1,228)

(778)

(1,550)

(1,281)

(1,795)

(10,493)

Net Cash Provided by (Used in) Continuing Operations

(5)

(95)

(103)

(88)

(26)

(258)

Cash, Cash Equivalents and Restricted Cash - Beginning of Period

325

429

408

413

453

336

345

440

413

440

413

440

413

440

697

Cash, Cash Equivalents and Restricted Cash - End of Period

325

429

408

413

453

336

345

429

336

325

453

413

440

Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:

(17)

(13)

(14)

(47)

(23)

(77)

(35)

(48)

(59)

Changes in assets and liabilities, excluding the effects of acquisitions:

Net Cash Provided by (Used in) Operating Activities

Net Cash Provided by (Used in) Investing Activities

Net Cash Provided by (Used in) Continuing Operations

Cash, Cash Equivalents and Restricted Cash - Beginning of Period

$ 0

Cash, Cash Equivalents and Restricted Cash - End of Period

Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:

(1)

(2)

(1)

(20)

Changes in assets and liabilities, excluding the effects of acquisitions:

(1)

Net Cash Provided by (Used in) Operating Activities

(1)

(2)

(11)

Net Cash Provided by (Used in) Investing Activities

Net Cash Provided by (Used in) Continuing Operations

Cash, Cash Equivalents and Restricted Cash - Beginning of Period

$ 0

Cash, Cash Equivalents and Restricted Cash - End of Period

$ 0

[1]	The sum of quarterly information may not agree to year-to-date information due to rounding.
[2]	Inclusive of the write-off of the respective deferred financing costs.
[3]	The losses represent write-off of deferred financing costs.

Quarterly Financial Information Restatement of 2018 Statement of Cash Flows (Details) - USD ($)
$ in Millions

3 Months Ended

6 Months Ended

9 Months Ended

12 Months Ended

Dec. 31, 2019

Sep. 30, 2019

Jun. 30, 2019

Mar. 31, 2019

Dec. 31, 2018

Sep. 30, 2018

Jun. 30, 2018

Mar. 31, 2018

Jun. 30, 2019

Jun. 30, 2018

Sep. 30, 2019

Sep. 30, 2018

Dec. 31, 2019

Dec. 31, 2018

Dec. 31, 2017

Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:

$ 193

$ 100

$ 409

$ 270

$ 652

$ 421

$ 860

$ 622

$ 366

(Gains) losses on retirement of long-term obligations

$ 388

$ 393

394

$ 389

$ 385

$ 379

374

787

753

1,175

1,138

1,572

1,527

1,241

$ 0

^[1]

106

^[2]

106

^[2]

^[3]

Amortization of deferred financing costs and other non-cash interest

117

103

Deferred income tax (benefit) provision

Other non-cash adjustments, net

(2)

Changes in assets and liabilities, excluding the effects of acquisitions:

Increase (decrease) in accrued interest

(41)

(28)

(38)

(31)

Increase (decrease) in accounts payable

(5)

(34)

(7)

(43)

179

254

271

234

Decrease (increase) in other assets

(43)

(5)

(89)

(59)

(166)

(74)

(96)

(105)

(19)

(43)

(62)

(91)

(62)

(103)

(71)

(114)

(16)

Net Cash Provided by (Used in) Operating Activities

512

452

1,227

1,110

1,890

1,773

2,698

2,500

2,032

Payments for acquisitions, net of cash acquired

(480)

(370)

(998)

(762)

(1,537)

(1,239)

(2,057)

(1,739)

(1,217)

(10)

(14)

(13)

(18)

(15)

(26)

(17)

(42)

(9,260)

Other investing activities, net

(14)

(7)

(12)

(5)

Net Cash Provided by (Used in) Investing Activities

(489)

(384)

(1,010)

(777)

(1,549)

(1,279)

(2,081)

(1,793)

(10,482)

Proceeds from issuance of long-term debt

996

1,743

995

1,743

1,895

2,743

1,894

2,742

3,093

Principal payments on debt and other long-term obligations

(25)

(32)

(36)

(47)

(59)

(76)

(86)

(105)

(119)

Purchases and redemptions of long-term debt

(12)

(1,318)

(12)

(1,318)

(12)

(2,346)

(12)

(2,346)

Borrowings under revolving credit facility

710

170

1,195

485

1,585

1,290

2,110

1,820

2,820

Payments under revolving credit facility

(1,140)

(1,050)

(1,785)

(1,150)

(2,270)

(1,465)

(2,660)

(1,725)

(1,840)

Proceeds from Issuance of Commercial Paper

500

155

Payments for financing costs

(10)

(15)

(14)

(20)

(24)

(33)

(24)

(31)

(29)

Net proceeds from issuance of common stock

843

841

4,221

Purchases of common stock

(42)

(33)

(43)

(34)

(44)

(34)

(44)

(34)

(23)

Dividends/distributions paid on common stock

(477)

(443)

(944)

(879)

(1,415)

(1,315)

(1,912)

(1,782)

(1,509)

Dividends paid on preferred stock

(28)

(57)

(85)

(113)

(30)

Net Cash Provided by (Used in) Financing Activities

(28)

(163)

(201)

(436)

(429)

(480)

(692)

(733)

8,192

Net Cash Provided by (Used in) Continuing Operations

(5)

(95)

(103)

(88)

(75)

(26)

(258)

Effect of exchange rate changes on cash

(1)

Cash, Cash Equivalents and Restricted Cash - Beginning of Period

325

429

408

413

453

336

345

440

413

440

413

440

413

440

697

Cash, Cash Equivalents and Restricted Cash - End of Period

338

325

429

408

413

453

336

345

429

336

325

453

338

413

440

Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:

210

114

456

294

729

458

671

445

Changes in assets and liabilities, excluding the effects of acquisitions:

389

390

1,176

1,528

1,242

(24)

(57)

102

144

223

175

Net Cash Provided by (Used in) Operating Activities

512

452

1,227

1,111

1,891

1,775

2,502

2,043

Net Cash Provided by (Used in) Investing Activities

(763)

(1,538)

(1,241)

(1,741)

(1,228)

(778)

(1,550)

(1,281)

(1,795)

(10,493)

Net Cash Provided by (Used in) Continuing Operations

(5)

(95)

(103)

(88)

(26)

(258)

Cash, Cash Equivalents and Restricted Cash - Beginning of Period

325

429

408

413

453

336

345

440

413

440

413

440

413

440

697

Cash, Cash Equivalents and Restricted Cash - End of Period

325

429

408

413

453

336

345

429

336

325

453

413

440

Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:

(17)

(13)

(14)

(47)

(23)

(77)

(35)

(48)

(59)

Changes in assets and liabilities, excluding the effects of acquisitions:

Net Cash Provided by (Used in) Operating Activities

Net Cash Provided by (Used in) Investing Activities

Net Cash Provided by (Used in) Continuing Operations

Cash, Cash Equivalents and Restricted Cash - Beginning of Period

$ 0

Cash, Cash Equivalents and Restricted Cash - End of Period

Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:

(1)

(2)

(1)

(20)

Changes in assets and liabilities, excluding the effects of acquisitions:

(1)

Net Cash Provided by (Used in) Operating Activities

(1)

(2)

(11)

Net Cash Provided by (Used in) Investing Activities