Intangible Assets, Goodwill and Other (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Goodwill and Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	$ 7,993	$ 7,993
Accumulated amortization of intangible assets	(4,814)	(4,397)
Finite-Lived Intangible Assets, Net	3,179	3,596
Amortization expense	447	446	$ 444
Estimated annual amortization expense related to intangible assets - Year 1	398
Estimated annual amortization expense related to intangible assets - Year 2	376
Estimated annual amortization expense related to intangible assets - Year 3	372
Estimated annual amortization expense related to intangible assets - Year 4	288
Estimated annual amortization expense related to intangible assets - Year 5	284
Goodwill	10,085	10,085	$ 10,078
Acquisitions
Goodwill and Finite-Lived Intangible Assets [Line Items]
Goodwill		7
Site Rental Contracts and Customer Relationships [Member]
Goodwill and Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	7,880	7,850
Accumulated amortization of intangible assets	(4,758)	(4,315)
Finite-Lived Intangible Assets, Net	3,122	3,535
Other Intangible Assets [Member]
Goodwill and Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	113	143
Accumulated amortization of intangible assets	(56)	(82)
Finite-Lived Intangible Assets, Net	$ 57	$ 61