Wireless Licenses, Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | |
|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Spectrum Licenses, United States Cellular Corporation (UScellular) | |||
| Indefinite-lived Intangible Assets [Line Items] | |||
| Payments to acquire productive assets | $ 1,000 | $ 1,000 | |
| Wireless Licenses | |||
| Indefinite-lived Intangible Assets [Line Items] | |||
| Wireless licenses under development | $ 5,600 | 5,600 | $ 8,600 |
| Interest costs capitalized | $ 154 | $ 234 | |
| Average remaining renewal period of wireless license portfolio (in years) | 10 years | ||
| X | ||||||||||
- Definition Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- 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
|
| X | ||||||||||
- Definition Amount of interest capitalized during the period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- 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
|
| X | ||||||||||
- Definition Average remaining renewal period of wireless license portfolio. No definition available.
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|