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Operating Segments and Concentrations of Credit Risk (Tables)

12 Months Ended

Dec. 31, 2024

Dec. 31, 2023

Dec. 31, 2022

Operating Segments and Concentrations of Credit Risk [Abstract]

Schedule of Segment Reporting Information, by Segment [Table Text Block]

			Year Ended December 31, 2024
			Towers						Fiber						Other Non-Segment Items						Total
Segment site rental revenues			$	4,266					$	2,092											$	6,358
Segment services and other revenues			192						18												210
Segment revenues			4,458						2,110												6,568
Segment site rental costs of operations			959						734												1,693
Segment services and other costs of operations			101						12												113
Segment costs of operations(a)(b)			1,060						746												1,806
Segment adjusted site rental gross margin			3,307						1,358												4,665
Segment adjusted services and other gross margin			91						6												97
Segment selling, general and administrative expenses(b)			76						176												252
Segment operating profit (loss)			3,322						1,188												4,510
Other selling, general and administrative expenses(b)															$	348					348
Stock-based compensation expense, net															131						131
Depreciation, amortization and accretion															1,738						1,738
Restructuring charges															109						109
Interest expense and amortization of deferred financing costs, net															932						932
Goodwill impairment															4,958						4,958
Other (income) expenses to reconcile to income (loss) before income taxes(c)															173						173
Income (loss) before income taxes																					$	(3,879)
Capital expenditures			$	133					$	1,045					$	44					$	1,222
Total assets (at year end)			$	20,814					$	11,283					$	639					$	32,736
Total goodwill (at year end)			$	5,127					$	—					$	—					$	5,127

			Year Ended December 31, 2023
			Towers						Fiber						Other Non-Segment Items						Total
Segment site rental revenues			$	4,313					$	2,219											$	6,532
Segment services and other revenues			421						28												449
Segment revenues			4,734						2,247												6,981
Segment site rental costs of operations			943						686												1,629
Segment services and other costs of operations			294						12												306
Segment costs of operations(a)(b)			1,237						698												1,935
Segment adjusted site rental gross margin			3,370						1,533												4,903
Segment adjusted services and other gross margin			127						16												143
Segment selling, general and administrative expenses(b)			104						194												298
Segment operating profit (loss)			3,393						1,355												4,748
Other selling, general and administrative expenses(b)															$	333					333
Stock-based compensation expense, net															157						157
Depreciation, amortization and accretion															1,754						1,754
Restructuring charges															85						85
Interest expense and amortization of deferred financing costs, net															850						850
Other (income) expenses to reconcile to income (loss) before income taxes(c)															41						41
Income (loss) before income taxes																					$	1,528
Capital expenditures			$	194					$	1,175					$	55					$	1,424
Total assets (at year end)			$	21,550					$	16,308					$	669					$	38,527
Total goodwill (at year end)			$	5,127					$	4,958					$	—					$	10,085

			Year Ended December 31, 2023
			Towers						Fiber						Other Non-Segment Items						Total
Segment costs of operations:
Lease expense			$	732					$	347					$	—					$	1,079
Employee compensation expense			122						98						—						220
Repairs and maintenance expense			58						107						—						165
Other segment costs of operations expense			325						146						—						471
Total segment costs of operations(a)(b)			1,237						698						—						1,935
Segment selling, general and administrative expenses:
Employee compensation expense			82						117						171						370
Other segment selling, general and administrative expenses			22						77						162						261
Total segment selling, general and administrative expenses(b)			$	104					$	194					$	333					$	631

(a)Exclusive of depreciation, amortization and accretion shown separately.

(b)Segment costs of operations for the year ended December 31, 2023 excludes (1) stock-based compensation expense, net of $29 million and (2) prepaid lease purchase price adjustments of $16 million. For the year ended December 31, 2023, segment selling, general and administrative expenses and other selling, general and administrative expenses exclude stock-based compensation expense, net of $128 million.

(c)See consolidated statement of operations and comprehensive income (loss) for further information.

			Year Ended December 31, 2022
			Towers						Fiber						Other Non-Segment Items						Total
Segment site rental revenues			$	4,322					$	1,967											$	6,289
Segment services and other revenues			685						12												697
Segment revenues			5,007						1,979												6,986
Segment site rental costs of operations			918						650												1,568
Segment services and other costs of operations			447						9												456
Segment costs of operations(a)(b)			1,365						659												2,024
Segment adjusted site rental gross margin			3,404						1,317												4,721
Segment adjusted services and other gross margin			238						3												241
Segment selling, general and administrative expenses(b)			115						190												305
Segment operating profit (loss)			3,527						1,130												4,657
Other selling, general and administrative expenses(b)															$	317					317
Stock-based compensation expense, net															156						156
Depreciation, amortization and accretion															1,707						1,707
Interest expense and amortization of deferred financing costs, net															699						699
Other (income) expenses to reconcile to income (loss) before income taxes(c)															87						87
Income (loss) before income taxes																					$	1,691
Capital expenditures			$	185					$	1,058					$	67					$	1,310
Total assets (at year end)			$	22,210					$	16,010					$	701					$	38,921
Total goodwill (at year end)			$	5,127					$	4,958					$	—					$	10,085

			Year Ended December 31, 2022
			Towers						Fiber						Other Non-Segment Items						Total
Segment costs of operations:
Lease expense			$	707					$	321					$	—					$	1,028
Employee compensation expense			159						100						—						259
Repairs and maintenance expense			56						97						—						153
Other segment costs of operations expense			443						141						—						584
Total segment costs of operations(a)(b)			1,365						659						—						2,024
Segment selling, general and administrative expenses:
Employee compensation expense			93						118						183						394
Other segment selling, general and administrative expenses			22						72						134						228
Total segment selling, general and administrative expenses(b)			$	115					$	190					$	317					$	622

(a)Exclusive of depreciation, amortization and accretion shown separately.

(b)Segment costs of operations for the year ended December 31, 2022 excludes (1) stock-based compensation expense, net of $28 million and (2) prepaid lease purchase price adjustments of $16 million. For the year ended December 31, 2022, segment selling, general and administrative expenses and other selling, general and administrative expenses exclude stock-based compensation expense, net of $128 million.

(c)See consolidated statement of operations and comprehensive income (loss) for further information.

A Summary of the Percentage of the Consolidated Revenues for Those Customers Accounting for More than 10% of the Consolidated Revenues

The following table summarizes the percentage of the consolidated revenues for those tenants accounting for more than 10% of the Company's consolidated revenues.

			Years Ended December 31,
			2024						2023						2022
T-Mobile			35		%				38		%				38		%
AT&T			19		%				19		%				18		%
Verizon Wireless			19		%				19		%				18		%
Total			73		%				76		%				74		%

Significant Segment Expenses

			Year Ended December 31, 2024
			Towers						Fiber						Other Non-Segment Items						Total
Segment costs of operations:
Lease expense			$	745					$	369					$	—					$	1,114
Employee compensation expense			90						95						—						185
Repairs and maintenance expense			54						120						—						174
Other segment costs of operations expense			171						162						—						333
Total segment costs of operations(a)(b)			1,060						746						—						1,806
Segment selling, general and administrative expenses:
Employee compensation expense			63						102						160						325
Other segment selling, general and administrative expenses			13						74						188						275
Total segment selling, general and administrative expenses(b)			$	76					$	176					$	348					$	600

(a)Exclusive of depreciation, amortization and accretion shown separately.

(b)Segment costs of operations for the year ended December 31, 2024 excludes (1) stock-based compensation expense, net of $25 million and (2) prepaid lease purchase price adjustments of $16 million. For the year ended December 31, 2024, segment selling, general and administrative expenses and other selling, general and administrative expenses exclude stock-based compensation expense, net of $106 million.

(c)See consolidated statement of operations and comprehensive income (loss) for further information.

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Operating Segments and Concentrations of Credit Risk [Abstract]

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Significant Segment Expenses

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Tabular disclosure of the extent of the entity's reliance on its major customers, if revenues from transactions with a single external customer amount to 10 percent or more of entity revenues, including the disclosure of that fact, the total amount of revenues from each such customer, and the identity of the reportable segment or segments reporting the revenues. The entity need not disclose the identity of a major customer or the amount of revenues that each segment reports from that customer. For these purposes, a group of companies known to the entity to be under common control is considered a single customer, and the federal government, a state government, a local government such as a county or municipality, or a foreign government is each considered a single customer.

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Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.

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