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Investments (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Investments [Abstract] |  |  |
Equity method investments | $ 376 | $ 684 |
Other investments | 142 | 149 |
Total investments | 518 | 833 |
Unamortized basis difference for equity-method investments acquired | 240 | 340 |
Net losses from equity-method investments | $ 331 | $ 343 | $ 100

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