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Derivative Instruments and Hedging Activities (Credit Risk-Related Contingent Features) (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Credit Risk-Related Contingent Features [Line Items]    
Derivative Liability, Fair Value of Collateral $ 8 $ 4
Derivative, Collateral, Right to Reclaim Cash $ 54 $ 104