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Operating Segments and Concentrations of Credit Risk (Tables) | 12 Months Ended
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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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- Definition 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. + References No definition available. + Details
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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-25 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-22 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-30 + Details
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