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Device Payment Plan Agreement and Wireless Service Receivables - Schedule of Device Payment Plan Agreement Receivables (Detail) - USD ($) $ in Millions | Mar. 31, 2023 | Dec. 31, 2022
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Receivables [Abstract] |  |
Device payment plan agreement receivables, gross | $ 26,586 | $ 26,188
Unamortized imputed interest | (538) | (479)
Device payment plan agreement receivables, at amortized cost | 26,048 | 25,709
Allowance | (932) | (881)
Device payment plan agreement receivables, net | 25,116 | 24,828
Accounts receivable, net | 12,587 | 12,929
Other assets | $ 12,529 | $ 11,899

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