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Acquisitions and Divestitures - TracFone Wireless, Inc. (Details) - USD ($) $ in Millions |  | 12 Months Ended
--- | --- | ---
Nov. 23, 2021 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Business Acquisition [Line Items] |  |  |  |
Business acquisition, purchase price in cash |  | $ 0 | $ 30 | $ (248)
TracFone Wireless, Inc. |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business acquisition, purchase price in cash | $ 3,500 |  |  |
Number of shares issuable (in shares) | 57,596,544 |  |  |
Common stock value consideration to acquire business | $ 3,000 |  |  |
Future cash consideration related to achievement of certain performance measures | 650 |  |  |
Contingent consideration | $ 560 |  |  |
Contingent consideration, earnout period | 2 years |  |  |
Contingent consideration payment |  | $ 52 | $ 257 | 188
Cash acquired |  |  |  | $ 248

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