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v3.23.1

Wireless Licenses, Goodwill and Other Intangible Assets - Composition of Other Intangible Assets, Net (Detail) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2023 | Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items] |  |
Gross Amount | $ 30,990 | $ 30,562
Accumulated Amortization | (19,744) | (19,101)
Net Amount | 11,246 | 11,461
Customer Lists |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Amount | 4,335 | 4,335
Accumulated Amortization | (1,776) | (1,646)
Net Amount | $ 2,559 | 2,689
Customer Lists | Minimum |  |
Finite-Lived Intangible Assets [Line Items] |  |
Other intangible asset, useful life | 5 years |
Customer Lists | Maximum |  |
Finite-Lived Intangible Assets [Line Items] |  |
Other intangible asset, useful life | 13 years |
Non-Network Internal-Use Software |  |
Finite-Lived Intangible Assets [Line Items] |  |
Other intangible asset, useful life | 7 years |
Gross Amount | $ 23,838 | 23,421
Accumulated Amortization | (16,835) | (16,397)
Net Amount | 7,003 | 7,024
Other |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Amount | 2,817 | 2,806
Accumulated Amortization | (1,133) | (1,058)
Net Amount | $ 1,684 | $ 1,748
Other | Minimum |  |
Finite-Lived Intangible Assets [Line Items] |  |
Other intangible asset, useful life | 4 years |
Other | Maximum |  |
Finite-Lived Intangible Assets [Line Items] |  |
Other intangible asset, useful life | 25 years |

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