v3.25.2
Derivative Instruments and Hedging Activities Credit Risk-Related Contingent Features (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Derivative [Line Items]          
Derivative, Net Liability Position, Aggregate Fair Value $ 355   $ 355   $ 288
Not Designated as Hedging Instrument [Member]          
Derivative [Line Items]          
Derivative, Net Liability Position, Aggregate Fair Value 248   248   234
Gains (Losses) Recognized in Earnings (not designated as hedging instruments) (78) $ 48 (62) $ 152  
Cash Flow Hedging [Member]          
Derivative [Line Items]          
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred (3) (30) 17 (28)  
Gains (Losses) Recognized in Earnings (not designated as hedging instruments) (46) 114 (178) 358  
Interest Rate Contract [Member]          
Derivative [Line Items]          
Derivative, Net Liability Position, Aggregate Fair Value 76   76   15
Interest Rate Contract [Member] | Not Designated as Hedging Instrument [Member]          
Derivative [Line Items]          
Derivative, Net Liability Position, Aggregate Fair Value 0   0   $ 0
Gains (Losses) Recognized in Earnings (not designated as hedging instruments) 0 1 0 1  
Interest Rate Contract [Member] | Cash Flow Hedging [Member]          
Derivative [Line Items]          
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred (6) (31) 9 (30)  
Gains (Losses) Recognized in Earnings (not designated as hedging instruments) (19) 115 (185) 340  
Measurement Input, Quoted Price | Not Designated as Hedging Instrument [Member]          
Derivative [Line Items]          
Gains (Losses) Recognized in Earnings (not designated as hedging instruments) $ (9) $ (15) $ (14) $ (19)