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Derivative Financial Instruments - Schedule of Gains (Losses) from Valuation and Settlements Reported on Derivatives Not Designated as Accounting Hedges (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Derivative Instruments, Gain (Loss) |  |  |  |
Gains (losses) from valuation and settlements reported on derivatives | $ 24 | $ 32 | $ (51) | $ 26
Net gains (losses) on investments and derivatives |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Gains (losses) from valuation and settlements reported on derivatives | 6 | 20 | (78) | (3)
Operating costs and expenses |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Gains (losses) from valuation and settlements reported on derivatives | 18 | 12 | 27 | 29
Interest rate contracts |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Gains (losses) from valuation and settlements reported on derivatives | 2 | 42 | (8) | 21
Interest rate contracts | Net gains (losses) on investments and derivatives |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Gains (losses) from valuation and settlements reported on derivatives | 2 | 42 | (8) | 21
Interest rate contracts | Operating costs and expenses |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Gains (losses) from valuation and settlements reported on derivatives | 0 | 0 | 0 | 0
Equity and index contracts |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Gains (losses) from valuation and settlements reported on derivatives | 13 | 8 | 11 | 7
Equity and index contracts | Net gains (losses) on investments and derivatives |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Gains (losses) from valuation and settlements reported on derivatives | (2) | (2) | (10) | (17)
Equity and index contracts | Operating costs and expenses |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Gains (losses) from valuation and settlements reported on derivatives | 15 | 10 | 21 | 24
Contingent consideration |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Gains (losses) from valuation and settlements reported on derivatives | 3 | 2 | 6 | 5
Contingent consideration | Net gains (losses) on investments and derivatives |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Gains (losses) from valuation and settlements reported on derivatives | 0 | 0 | 0 | 0
Contingent consideration | Operating costs and expenses |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Gains (losses) from valuation and settlements reported on derivatives | 3 | 2 | 6 | 5
Foreign currency contracts |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Gains (losses) from valuation and settlements reported on derivatives | 6 | (23) | (50) | (9)
Foreign currency contracts | Net gains (losses) on investments and derivatives |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Gains (losses) from valuation and settlements reported on derivatives | 6 | (23) | (50) | (9)
Foreign currency contracts | Operating costs and expenses |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Gains (losses) from valuation and settlements reported on derivatives | $ 0 | 0 | 0 | 0
Credit default contracts |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Gains (losses) from valuation and settlements reported on derivatives |  | 3 | (10) | 2
Credit default contracts | Net gains (losses) on investments and derivatives |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Gains (losses) from valuation and settlements reported on derivatives |  | 3 | (10) | 2
Credit default contracts | Operating costs and expenses |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Gains (losses) from valuation and settlements reported on derivatives |  | $ 0 | $ 0 | $ 0

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- Definition Line items represent financial concepts included in a table. 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