Condensed Consolidated Balance Sheet - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Assets, Current [Abstract]
Cash and cash equivalents	$ 281	$ 292
Restricted cash, current	160	169
Receivables, net	516	543
Prepaid expenses	158	105
Other current assets	175	145
Assets, Current, Total	1,290	1,254
Deferred site rental receivables	1,796	1,588
Property and equipment, net of accumulated depreciation of $12,517 and $11,937, respectively	15,219	15,269
Operating lease right-of-use assets	6,663	6,682
Goodwill	10,087	10,078
Other intangible assets, net	3,822	4,046
Other assets, net	136	123
Assets, Total	39,013	39,040
Liabilities, Current [Abstract]
Accounts payable	230	246
Accrued interest	180	182
Deferred revenues	701	776
Other accrued liabilities	342	401
Current maturities of debt and other obligations	70	72
Current portion of operating lease liabilities	348	349
Liabilities, Current, Total	1,871	2,026
Debt and other long-term obligations	21,212	20,557
Operating lease liabilities	6,017	6,031
Other long-term liabilities	2,052	2,168
Liabilities, Total	$ 31,152	$ 30,782
Common stock, par value	$ 0.01	$ 0.01
Stockholders' Equity Attributable to Parent [Abstract]
Common Stock, Value, Issued	$ 4	$ 4
Additional Paid in Capital	18,050	18,011
Accumulated Other Comprehensive Income (Loss), Net of Tax	(5)	(4)
Retained Earnings (Accumulated Deficit)	(10,188)	(9,753)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Total	7,861	8,258
Liabilities and Equity, Total	$ 39,013	$ 39,040