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Device Payment Plan Agreement and Wireless Service Receivables - Schedule of Credit Quality Indicators (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023
Device payment plan agreement receivables, at amortized cost |  |
Device payment plan agreement receivables, at amortized cost | $ 31,308 | $ 29,206
Wireless service |  |
Gross write-offs |  |
Gross write-offs | 557 |
Device payment plan agreement |  |
Device payment plan agreement receivables, at amortized cost |  |
2024 | 17,413 |
2023 | 9,617 |
Prior to 2021 | 3,303 |
Device payment plan agreement receivables, at amortized cost | 30,333 |
Gross write-offs |  |
2024 | 428 |
2023 | 764 |
2022 and prior | 266 |
Gross write-offs | 1,458 |
Wireless service |  |
Device payment plan agreement receivables, at amortized cost |  |
2024 | 5,760 |
2023 | 49 |
Device payment plan agreement receivables, at amortized cost | 5,809 |
Gross write-offs |  |
2024 | 374 |
2023 and prior | 183 |
Gross write-offs | 557 |
New customers | Device payment plan agreement |  |
Device payment plan agreement receivables, at amortized cost |  |
2024 | 3,277 |
2023 | 1,542 |
Prior to 2021 | 397 |
Device payment plan agreement receivables, at amortized cost | 5,216 |
Gross write-offs |  |
2024 | 376 |
2023 | 563 |
2022 and prior | 111 |
Gross write-offs | 1,050 |
Existing customers | Device payment plan agreement |  |
Device payment plan agreement receivables, at amortized cost |  |
2024 | 14,136 |
2023 | 8,075 |
Prior to 2021 | 2,906 |
Device payment plan agreement receivables, at amortized cost | 25,117 |
Gross write-offs |  |
2024 | 52 |
2023 | 201 |
2022 and prior | 155 |
Gross write-offs | $ 408 |

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