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Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Unrecognized Tax Benefits [Roll Forward] |  |  |
Balance, January 1 | $ 875 | $ 962 | $ 1,024
Increases: |  |  |
Current year tax positions | 161 | 132 | 119
Tax positions related to prior years | 47 | 40 | 30
Decreases: |  |  |
Tax positions related to prior years | (4) | (50) | (30)
Settlements with tax authorities | (39) | (160) | (74)
Lapse of statute of limitations | (21) | (49) | (104)
Effects of foreign currency translations | (13) | 0 | (3)
Balance, December 31 | $ 1,006 | $ 875 | $ 962

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