v3.26.3
Derivative Financial Instruments and Hedging Activities - Schedule of Balance Sheet (Details) - Derivatives designated as hedges - Fair value hedges - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Derivatives, Fair Value [Line Items]    
Carrying Amount of Hedged Items $ 32,474 $ 35,187
Cumulative Amount of Fair Value Hedging Adjustments 1,230 693
Discontinued hedge cumulative amount of fair value hedging adjustments $ 362 $ 428