Wireless Licenses, Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($) $ in Millions |
9 Months Ended | |
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Sep. 30, 2026 |
Sep. 30, 2025 |
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| Spectrum Licenses | ||
| Indefinite-lived Intangible Assets [Line Items] | ||
| Payments to acquire productive assets | $ 4,200 | |
| Wireless Licenses | ||
| Indefinite-lived Intangible Assets [Line Items] | ||
| Wireless licenses under development | 5,000 | $ 7,900 |
| Interest costs capitalized | $ 220 | $ 338 |
| Average remaining renewal period of wireless license portfolio (in years) | 10 years | |
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of interest capitalized during the period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Average remaining renewal period of wireless license portfolio. No definition available.
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