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Derivative Instruments and Hedging Activities - Net Derivative Liabilities and Collateral Posted (Details) - USD ($)
$ in Millions
Sep. 30, 2025
Dec. 31, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]    
Net derivative liabilities with credit risk-related contingent features $ 23,734 $ 22,414
Collateral posted $ 18,038 $ 16,252