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Derivative Financial Instruments - Exposure to Credit Loss on Call Options Held (Details) - USD ($) $ in Millions | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Derivatives, Fair Value [Line Items] |  |
Fair Value | $ 1,207 | $ 977
Not Designated as Hedging Instrument | Derivative instruments excluding futures contracts |  |
Derivatives, Fair Value [Line Items] |  |
Notional Amount | 34,353 | 29,968
Fair Value | 1,004 | 796
Collateral | 1,011 | 775
Net Credit Risk | $ 36 | $ 39

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