Revenues (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Revenue Recognition Non-cancelable Lease Term for Wireless Tenants		five to 15 years
Revenue Recognition for Fiber Solutions Tenants		three to 20 years
Deferred site rental receivables		$ 1,682		$ 1,588
Revenue, Performance Obligation, Description of Payment Terms		45 to 60 days
Revenue, Remaining Performance Obligation, Amount		$ 2,500		$ 2,600
Revenue Recognized on Deferred Revenues		190	$ 170
Contracted Amounts Receivable from Customers, remainder of year	[1]	3,514
Contracted Amounts Receivable from Customers, in Two Years	[1]	4,591
Contracted Amounts Receivable from Customers, in Three Years	[1]	4,158
Contracted Amounts Receivable from Customers, in Four Years	[1]	3,854
Contracted Amounts Receivable from Customers, in Five Years	[1]	3,794
Contracted Amounts Receivable from Customers, Thereafter	[1]	22,404
Lessor, Operating Lease, Payments to be Received	[1]	42,315
Other Current Assets [Member]
Deferred site rental receivables		105
Other Noncurrent Assets [Member]
Deferred site rental receivables		$ 1,700

[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.