Goodwill, Spectrum License Transactions and Other Intangible Assets - Schedule of Spectrum Licenses (Details) - Licensing Agreements - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
|
| Indefinite-lived Intangible Assets [Roll Forward] | |||
| Beginning balance | $ 95,798 | $ 92,606 | $ 82,828 |
| Spectrum license acquisitions | 103 | 3,152 | 9,545 |
| Spectrum licenses transferred to held for sale | (2) | (64) | (28) |
| Costs to clear spectrum | 808 | 104 | 261 |
| Ending balance | $ 96,707 | $ 95,798 | $ 92,606 |