Document and Entity Information - shares	3 Months Ended	6 Months Ended
Document and Entity Information - shares	Jun. 30, 2018	Jun. 30, 2018	Aug. 06, 2018
Entity Information [Line Items]
Entity Registrant Name		CC Holdings GS V LLC
Entity Central Index Key		0001574291
Current Fiscal Year End Date		--06-30
Entity Filer Category		Non-accelerated Filer
Document Type		10-Q
Document Period End Date		Jun. 30, 2018
Document Fiscal Year Focus		2018
Document Fiscal Period Focus		Q2
Amendment Flag		false
Entity Common Stock, Shares Outstanding			0
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers		Yes
Entity Current Reporting Status		Yes

Condensed Consolidated Balance Sheet - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
ASSETS
Cash and cash equivalents	$ 21,655	$ 30,771
Receivables, net	2,350	2,581
Prepaid expenses	27,444	24,300
Deferred site rental receivables and other current assets	39,928	25,105
Total current assets	91,377	82,757
Deferred site rental receivables	325,070	333,164
Property and equipment, net of accumulated depreciation of $965,913 and $919,546, respectively	1,025,250	1,041,157
Goodwill	1,338,730	1,338,730
Other intangible assets, net	864,946	922,526
Long-term prepaid rent and other assets, net	38,999	38,154
Total assets	3,684,372	3,756,488
LIABILITIES AND EQUITY
Accrued expenses and payables	2,443	1,801
Accrued interest	8,126	8,126
Deferred revenues	12,043	11,586
Other accrued liabilities	9,584	8,828
Total current liabilities	32,196	30,341
Debt	993,355	992,663
Deferred Ground Lease Payable	110,349	107,673
Above Market Leases and Other Liabilities	49,688	49,340
Total liabilities	1,185,588	1,180,017
Member's equity:
Member's equity	2,498,784	2,576,471
Accumulated earnings (deficit)	0	0
Total member's equity	2,498,784	2,576,471
Total liabilities and equity	$ 3,684,372	$ 3,756,488

Condensed Consolidated Balance Sheet Parenthetical (Parentheticals) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	$ 965,913	$ 919,546

Condensed Consolidated Statement of Operations - USD ($)
$ in Thousands

3 Months Ended

6 Months Ended

Jun. 30, 2018

Jun. 30, 2017

Jun. 30, 2018

Jun. 30, 2017

Income Statement [Abstract]

Site rental revenues

$ 164,056

$ 153,215

$ 327,050

$ 306,296

Operating expenses:

Site rental cost of operations—third parties

^[1]

38,355

37,868

75,862

75,681

Site rental cost of operations—related parties

^[1]

9,700

9,101

19,306

18,041

Site rental cost of operations—total

^[1]

48,055

46,969

95,168

93,722

Management fee—related party

12,031

11,683

24,020

23,290

Asset write-down charges

344

Depreciation, amortization and accretion

52,731

52,543

105,432

105,172

Total operating expenses

112,817

111,195

224,964

222,184

Operating income (loss)

51,239

42,020

102,086

84,112

Interest expense and amortization of deferred financing costs

(9,968)

(19,937)

Other income (expense)

(182)

(27)

849

Income (loss) before income taxes

41,311

31,870

82,122

65,024

Benefit (provision) for income taxes

(93)

(88)

(186)

(176)

Net income (loss)

$ 41,218

$ 31,782

$ 81,936

$ 64,848

[1]	Exclusive of depreciation, amortization and accretion shown separately and certain indirect costs included in the management fee.

Condensed Consolidated Statement of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities:
Net income (loss)	$ 81,936	$ 64,848
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation, amortization and accretion	105,432	105,172
Amortization of deferred financing costs	692	692
Asset write-down charges	344	0
Changes in assets and liabilities:
Increase (decrease) in accounts payable	449	(1,078)
Increase (decrease) in deferred revenues, deferred ground lease payable and other liabilities	2,992	2,252
Decrease (increase) in receivables	231	1,918
Decrease (increase) in other current assets, deferred site rental receivable, long-term prepaid rent and other assets	(9,155)	(1,049)
Net cash provided by (used for) operating activities	182,921	172,755
Cash flows from investing activities:
Capital expenditures	(32,414)	(26,099)
Net cash provided by (used for) investing activities	(32,414)	(26,099)
Cash flows from financing activities:
Distributions to Member	(159,623)	(143,402)
Net cash provided by (used for) financing activities	(159,623)	(143,402)
Net increase (decrease) in cash and cash equivalents	(9,116)	3,254
Cash and cash equivalents at beginning of period	30,771	19,550
Cash and cash equivalents at end of period	$ 21,655	$ 22,804

Condensed Consolidated Statement of Equity - USD ($) $ in Thousands	Total	Members' Equity [Member]	Accumulated Earnings (Deficit) [Member]
Balance, beginning at Dec. 31, 2016	$ 2,739,245	$ 2,739,245	$ 0
Equity [Roll Forward]
Distributions to Member	(143,402)	(78,554)	(64,848)
Net income (loss)	64,848	0	64,848
Balance, ending at Jun. 30, 2017	2,660,691	2,660,691	0
Balance, beginning at Mar. 31, 2017	2,682,740	2,682,740	0
Equity [Roll Forward]
Distributions to Member	(53,831)	(22,049)	(31,782)
Net income (loss)	31,782	0	31,782
Balance, ending at Jun. 30, 2017	2,660,691	2,660,691	0
Balance, beginning at Dec. 31, 2017	2,576,471	2,576,471	0
Equity [Roll Forward]
Distributions to Member	(159,623)	(77,687)	(81,936)
Net income (loss)	81,936	0	81,936
Balance, ending at Jun. 30, 2018	2,498,784	2,498,784	0
Balance, beginning at Mar. 31, 2018	2,519,881	2,519,881	0
Equity [Roll Forward]
Distributions to Member	(62,315)	(21,097)	(41,218)
Net income (loss)	41,218	0	41,218
Balance, ending at Jun. 30, 2018	$ 2,498,784	$ 2,498,784	$ 0

General	6 Months Ended
General	Jun. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
General	General The accompanying consolidated financial statements reflect the consolidated financial position, results of operations, and cash flows of CC Holdings GS V LLC ("CCL") and its consolidated wholly-owned subsidiaries (collectively, "Company"). The Company is a wholly-owned subsidiary of Global Signal Operating Partnership, L.P. ("GSOP"), which is an indirect subsidiary of Crown Castle International Corp., a Delaware corporation ("CCIC" or "Crown Castle"). CCL is a Delaware limited liability company that is a holding company and an issuer of the Company's debt. Intercompany accounts, transactions, and profits have been eliminated. As used herein, the term "including," and any variation thereof means "including without limitation." The use of the word "or" herein is not exclusive. The information contained in the following notes to the consolidated financial statements is condensed from that which would appear in the annual consolidated financial statements; accordingly, the consolidated financial statements included herein should be reviewed in conjunction with the consolidated financial statements for the fiscal year ended December 31, 2017, and related notes thereto, included in the 2017 Form 10-K filed by the Company with the SEC. The Company is organized specifically to own, lease and manage towers and other structures (collectively, "towers"), and to a lesser extent, interests in land under third party and related party towers in various forms ("land interests") (collectively, "communications infrastructure" or "sites") that are geographically dispersed across the United States ("U.S."). The Company's core business is providing access, including space or capacity, to its sites via long-term contracts in various forms, including lease, license, and sublease agreements (collectively, "contracts"). The Company's customers on its communication infrastructure are referred to herein as "tenants." Management services related to the Company's sites are performed by Crown Castle USA Inc. ("CCUSA"), an affiliate of the Company, under the Management Agreement, as the Company has no employees. Approximately 68% of the Company's sites are leased or subleased or operated and managed for an initial period of 32 years (through May 2037) under master lease or other agreements with Sprint ("Sprint Sites"). CCIC, through its subsidiaries (including the Company) has the option to purchase in 2037 all (but not less than all) of the Sprint Sites from Sprint for approximately $2.3 billion. CCIC has no obligation to exercise the purchase option. For U.S federal income tax purposes, CCIC operates as a real estate investment trust ("REIT"), and as its indirect subsidiary, the Company's assets and operations are included in the CCIC REIT. See note 5. Basis of Presentation The condensed consolidated financial statements included herein are unaudited; however, they include all adjustments (consisting only of normal recurring adjustments) which, in the opinion of management, are necessary to state fairly the consolidated financial position of the Company at June 30, 2018, and the consolidated results of operations and the consolidated cash flows for the six months ended June 30, 2018 and 2017. The year-end condensed consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by generally accepted accounting principles in the U.S. ("GAAP"). The results of operations for the interim periods presented are not necessarily indicative of the results to be expected for the full year. 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 and the disclosure for contingent assets and liabilities at the date of the financial statements as well as the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Summary of Significant Accounting Policies	6 Months Ended
Summary of Significant Accounting Policies	Jun. 30, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Summary of Significant Accounting Policies	Recently Adopted Accounting Pronouncements In January 2017, the FASB issued new guidance which clarifies the definition of a business in order to assist companies in evaluating whether transactions should be accounted for as acquisitions or disposals of assets or businesses. The Company adopted the guidance on January 1, 2018, and the adoption of this guidance did not have a material impact on its condensed consolidated financial statements. In May 2014, the FASB released updated guidance regarding the recognition of revenue from contracts with customers not otherwise addressed by specific guidance (commonly referred to as "ASC 606" or "the revenue recognition standard"). The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. To achieve that core principle, an entity should apply the following steps: (1) identify the contracts with the customer; (2) identify the performance obligations in the contract; (3) determine the contract price; (4) allocate the transaction price to the performance obligations in the contract; and (5) recognize revenue when (or as) the entity satisfies a performance obligation. This guidance was effective for the Company on January 1, 2018. The Company's site rental revenues are within the scope of lease accounting and were not impacted by this guidance. Recent Accounting Pronouncements Not Yet Adopted 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 right-of-use 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. This guidance is effective for the Company as of January 1, 2019. This guidance is required to be applied, at the Company's election, either using a (1) modified retrospective approach for all leases existing at, or entered into after, the beginning of the earliest comparative period presented, or (2) cumulative-effect approach for all leases existing at, or entered into, after the effective date. The Company expects to apply the guidance using the cumulative-effect approach, thereby applying the new guidance at the effective date, without adjusting the comparative periods and, if necessary, recognizing a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. Although early adoption is permitted, the Company will not adopt the new guidance prior to January 1, 2019. The Company expects that (1) lessee arrangements will continue to be classified as operating leases under the new guidance; (2) this guidance will have a material impact on its condensed consolidated balance sheet due to the addition of right-of-use assets and lease liabilities for lessee arrangements (which primarily consist of ground leases under the Company's towers); and (3) there will not be a material impact to its condensed consolidated statement of operations and condensed consolidated statement of cash flows. CCIC is in the process of updating certain of its existing information technology systems to integrate the new guidance requirement.

Debt and Other Obligations

6 Months Ended

Jun. 30, 2018

Extinguishment of Debt [Line Items]

Debt and Other Obligations

Debt

The outstanding balance of the 3.849% Secured Notes due April 2023 as of both June 30, 2018 and December 31, 2017 was $993 million.

Interest Expense and Amortization of Deferred Financing Costs

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



	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
Interest expense on debt obligations	$	9,622	$	9,622	$	19,245	$	19,245
Amortization of deferred financing costs	346		346		692		692
Total	$	9,968	$	9,968	$	19,937	$	19,937

Related Party Transactions	6 Months Ended
Related Party Transactions	Jun. 30, 2017
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions Pursuant to the Management Agreement, CCUSA has agreed to employ, supervise, and pay at all times a sufficient number of capable employees as may be necessary to perform services in accordance with the operation standards defined in the Management Agreement. CCUSA currently acts as the Manager of the sites held by subsidiaries of CCIC. The management fee is equal to 7.5% of the Company’s Operating Revenues, as defined in the Management Agreement, which is based on the Company’s reported revenues adjusted to exclude certain items including revenues related to the accounting for leases with fixed escalators. The fee is compensation for those functions reasonably necessary to maintain, market, operate, manage and administer the sites, other than the operating expenses (which includes real estate and personal property taxes, ground lease and easement payments, and insurance premiums). Further, in connection with its role as Manager, CCUSA may make certain modifications to the Company's towers. In addition, CCUSA may perform installation services on the Company's towers, for which the Company is not a party to any agreement and for which no operating results are reflected herein. As part of the CCIC strategy to obtain long-term control of the land under its towers, affiliates of the Company have acquired rights to land under the Company's towers. These affiliates then lease the land to the Company. Under such circumstances, the Company's obligation typically continues with the same or similar economic terms as the contract for the land that existed prior to an affiliate acquiring rights to such land. As of June 30, 2018, approximately 30% of the Company's towers were located on land which was controlled by an affiliate. Also, the Company receives site rental revenue from affiliates for land controlled by the Company on which affiliates have towers and pays ground rent expense to affiliates for land owned by affiliates on which the Company has towers. For the six months ended June 30, 2018 and 2017, the Company recorded equity distributions of $159.6 million and $143.4 million, respectively, reflecting distributions to its member. Cash on hand above the amount that is required by the Management Agreement has been, and is expected to continue to be, distributed to the Company's parent company. As of June 30, 2018 and 2017, the Company had no material related party assets or liabilities on its condensed consolidated balance sheet.

Income Taxes	6 Months Ended
Income Taxes	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes CCIC operates as a REIT for U.S. federal income tax purposes. As a REIT, CCIC 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. For U.S. federal income tax purposes, the Company's assets and operations included in the CCIC REIT. For the six months ended June 30, 2018 and 2017, the Company's effective tax rate differed from the federal statutory rate predominately due to (1) CCIC's REIT status, including the dividends paid deduction and (2) state taxes.

Fair Values

6 Months Ended

Jun. 30, 2018

Fair Value Disclosures

Fair Value Disclosures

Fair Values

The fair value of cash and cash equivalents approximates 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 applicable. There were no changes since December 31, 2017 in the Company's valuation techniques used to measure fair values. The estimated fair values of the Company's financial instruments, along with the carrying amounts of the related assets and liabilities, are as follows:



	Level in Fair Value Hierarchy	June 30, 2018				December 31, 2017
	Level in Fair Value Hierarchy	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Assets:
Cash and cash equivalents	1	$	21,655	$	21,655	$	30,771	$	30,771
Liabilities:
Debt	2	993,355		991,660		992,663		1,032,530

- 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

Commitments and Contingencies	6 Months Ended
Commitments and Contingencies	Jun. 30, 2018
Commitments and Contingencies Disclosure
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. In addition, CCIC, through its subsidiaries (including the Company), has the option to purchase in 2037 all (but not less than all) of the Sprint Sites, which represent approximately 68% of the Company's sites. CCIC has no obligation to exercise the purchase option.

Guarantor Subsidiaries (Notes)	6 Months Ended
Guarantor Subsidiaries (Notes)	Jun. 30, 2018
Guarantees [Abstract]
Guarantor Subsidiaries	Guarantor Subsidiaries CCL has no independent assets or operations. The 3.849% Secured Notes are guaranteed by all subsidiaries of CCL, each of which is a wholly-owned subsidiary of CCL, other than Crown Castle GS III Corp., which is a co-issuer of the 2012 Secured Notes and a wholly-owned finance subsidiary. Such guarantees are full and unconditional and joint and several. Subject to the provisions of the Secured Notes Indenture, a guarantor may be released and relieved of its obligations under its guarantee under certain circumstances including: (1) in the event of any sale or other disposition of all or substantially all of the assets of any guarantor, by way of merger, consolidation or otherwise to a person that is not (either before or after giving effect to such transaction) CCL or a subsidiary of CCL, (2) in the event of any sale or other disposition of all of the capital stock of any guarantor, to a person that is not (either before or after giving effect to such transaction) CCL or a subsidiary of CCL, (3) upon CCL's exercise of legal defeasance in accordance with the relevant provisions of the Secured Notes Indenture, or (4) upon the discharge of the Secured Notes Indenture in accordance with its terms.

Summary of Significant Accounting Policies (Policies)	6 Months Ended
Summary of Significant Accounting Policies (Policies)	Jun. 30, 2018
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Recently Adopted Accounting Pronouncements In January 2017, the FASB issued new guidance which clarifies the definition of a business in order to assist companies in evaluating whether transactions should be accounted for as acquisitions or disposals of assets or businesses. The Company adopted the guidance on January 1, 2018, and the adoption of this guidance did not have a material impact on its condensed consolidated financial statements. In May 2014, the FASB released updated guidance regarding the recognition of revenue from contracts with customers not otherwise addressed by specific guidance (commonly referred to as "ASC 606" or "the revenue recognition standard"). The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. To achieve that core principle, an entity should apply the following steps: (1) identify the contracts with the customer; (2) identify the performance obligations in the contract; (3) determine the contract price; (4) allocate the transaction price to the performance obligations in the contract; and (5) recognize revenue when (or as) the entity satisfies a performance obligation. This guidance was effective for the Company on January 1, 2018. The Company's site rental revenues are within the scope of lease accounting and were not impacted by this guidance. Recent Accounting Pronouncements Not Yet Adopted 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 right-of-use 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. This guidance is effective for the Company as of January 1, 2019. This guidance is required to be applied, at the Company's election, either using a (1) modified retrospective approach for all leases existing at, or entered into after, the beginning of the earliest comparative period presented, or (2) cumulative-effect approach for all leases existing at, or entered into, after the effective date. The Company expects to apply the guidance using the cumulative-effect approach, thereby applying the new guidance at the effective date, without adjusting the comparative periods and, if necessary, recognizing a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. Although early adoption is permitted, the Company will not adopt the new guidance prior to January 1, 2019. The Company expects that (1) lessee arrangements will continue to be classified as operating leases under the new guidance; (2) this guidance will have a material impact on its condensed consolidated balance sheet due to the addition of right-of-use assets and lease liabilities for lessee arrangements (which primarily consist of ground leases under the Company's towers); and (3) there will not be a material impact to its condensed consolidated statement of operations and condensed consolidated statement of cash flows. CCIC is in the process of updating certain of its existing information technology systems to integrate the new guidance requirement.

Fair Value Disclosures (Tables)

6 Months Ended

Jun. 30, 2018

Fair Value Disclosures

Estimated Fair Values and Carrying Amounts of Assets and Liabilities

The estimated fair values of the Company's financial instruments, along with the carrying amounts of the related assets and liabilities, are as follows:



	Level in Fair Value Hierarchy	June 30, 2018				December 31, 2017
	Level in Fair Value Hierarchy	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Assets:
Cash and cash equivalents	1	$	21,655	$	21,655	$	30,771	$	30,771
Liabilities:
Debt	2	993,355		991,660		992,663		1,032,530

Debt and Other Obligations (Indebtedness) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Debt	$ 993,355	$ 992,663
2012 secured notes tranche B [Member]
Debt Instrument [Line Items]
Debt	$ 993,355
Stated interest rate	3.849%
Debt Instrument, Maturity Date	Apr. 01, 2023

Debt and Other Obligations (Components of Interest Expense and Amortization of Deferred Financing Costs) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Debt and Other Obligations [Abstract]
Interest expense on debt obligations	$ 9,622	$ 9,622	$ 19,245	$ 19,245
Amortization of deferred financing costs	346	346	692	692
Total	$ 9,968	$ 9,968	$ 19,937	$ 19,937

Related Party Transactions (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Related Party Transaction [Line Items]
Property Management Fee, Percent Fee	7.50%
Distributions to Member	$ (62,315)	$ (53,831)	$ (159,623)	$ (143,402)
Affiliated Entity [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Percentage of Towers Where Land is Owned by Related Party	30.00%		30.00%
Accumulated Earnings (Deficit) [Member]
Related Party Transaction [Line Items]
Distributions to Member	$ (41,218)	(31,782)	$ (81,936)	(64,848)
Members' Equity [Member]
Related Party Transaction [Line Items]
Distributions to Member	$ (21,097)	$ (22,049)	(77,687)	(78,554)
Net Equity contribution (distribution) from parent [Member] \| Members' Equity [Member]
Related Party Transaction [Line Items]
Distributions to Member			$ (159,623)	$ (143,402)

Fair Value Disclosures (Estimated Fair Values and Carrying Amounts of Assets and Liabilities) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017	Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents, carrying value	$ 21,655	$ 30,771	$ 22,804	$ 19,550
Debt	993,355	992,663
Fair Value, Inputs, Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents, fair value	21,655	30,771
Fair Value, Inputs, Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt and other obligations, fair value	$ 991,660	$ 1,032,530

General Business (Details) - Leased or Operated Under Sprint Master Lease Agreements [Member] $ in Billions	Jun. 30, 2018 USD ($)
Purchase Option, Percentage of Towers	68.00%
Purchase Options, Land	$ 2.3

Commitments and Contingencies Tower count as a percentage of total towers (Details)	Jun. 30, 2018
Leased or Operated Under Sprint Master Lease Agreements [Member]
Contractual Terms [Line Items]
Purchase Option, Percentage of Towers	68.00%

Supplemental Cash Flow Information (Tables) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Supplemental Cash Flow Information [Line Items]
Interest Paid	$ 19,245	$ 19,245