Cover Page DEI Document
Oct. 21, 2020
Entity Information [Line Items]  
Document Type 8-K
Document Period End Date Oct. 21, 2020
Entity Registrant Name Crown Castle International Corp
Entity Incorporation, State or 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
Entity Central Index Key 0001051470
Amendment Flag false
New York Stock Exchange  
Entity Information [Line Items]  
Title of 12(b) Security Common Stock, $0.01 par value
Trading Symbol CCI
Security Exchange Name NYSE