v3.25.4
DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Derivatives Not Designated As Hedges) (Details) - Derivatives not designated as hedging instruments - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Derivative Instruments, Gain (Loss) [Line Items]    
Other Noninterest Income/(Expense) $ 60 $ 60
Customer-facing interest rate derivatives    
Derivative Instruments, Gain (Loss) [Line Items]    
Other Noninterest Income/(Expense) 30 30
Customer commodity derivatives    
Derivative Instruments, Gain (Loss) [Line Items]    
Other Noninterest Income/(Expense) 1 0
Other interest rate derivatives 4    
Derivative Instruments, Gain (Loss) [Line Items]    
Other Noninterest Income/(Expense) 0 1
Foreign exchange derivatives    
Derivative Instruments, Gain (Loss) [Line Items]    
Other Noninterest Income/(Expense) 30 29
Purchased credit derivatives    
Derivative Instruments, Gain (Loss) [Line Items]    
Other Noninterest Income/(Expense) $ (1) $ 0