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Derivative Financial Instruments and Hedging Activities - Recognized in the Balance Sheet (Details) - Derivatives Designated as Hedges - Fair value hedges - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Derivatives, Fair Value [Line Items]    
Carrying Amount of Hedged Items $ 36,664 $ 33,551
Cumulative Amount of Fair Value Hedging Adjustments 1,281 1,029
Discontinued hedge cumulative amount of fair value hedging adjustments $ 719 $ 872