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Supplementary Information - Interest and Other Income, Net (Detail) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2022 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Segment Reporting [Abstract] |  |  |  |  |  |  |
Earnings of equity method investments |  |  |  | $ 182 | $ 206 | $ 164 |
Interest income |  |  |  | 174 | 100 | 99 |
Gain on sale of investment | [1] |  |  | 24 |  |  |
Gain on sale of Liberty shares | [1] |  |  | 0 | 36 | 325 |
Loss on Blue Chip Swap transactions | [1] |  |  |  |  | (139) |
Gain on ADC equity investment |  | $ 24 |  |  |  | 107 | [1]
Gain on sale of real estate | [1] |  |  |  |  | 43 |
Gain on repurchase of bonds |  |  | $ 11 |  |  | 11 | [1]
Interest and other income, net |  |  |  | $ 380 | $ 342 | $ 610 |
[1] | See Note 3 – Charges and Credits

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