Document and Entity Information
Aug. 15, 2019
Document And Entity Information [Line Items]  
Amendment Flag false
Entity Central Index Key 0001051470
Document Type 8-K
Document Period End Date Aug. 15, 2019
Entity Incorporation State Country Code DE
Entity File Number 001-16441
Entity Tax Identification Number 76-0470458
Entity Address, Address Line One 1220 Augusta Drive
Entity Address, Address Line Two Suite 600
Entity Address, City or Town Houston
Entity Address, State or Province TX
Entity Address, Postal Zip Code 77057-2261
City Area Code (713)
Local Phone Number 570-3000
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Common Stock [Member]  
Document And Entity Information [Line Items]  
Security 12b Title Common Stock
Trading Symbol CCI
Security Exchange Name NYSE
A 6.875 Mandatory Convertible Preferred Stock Series A [Member]  
Document And Entity Information [Line Items]  
Security 12b Title 6.875% Mandatory Convertible Preferred Stock, Series A
Trading Symbol CCI.PRA
Security Exchange Name NYSE