v3.26.1
DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Notional and Recorded Fair Values) (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Derivative [Line Items]    
Notional amount $ 60,881 $ 40,627
Other assets 453 360
Other liabilities 369 260
Less: Offsetting derivative instruments (79) (51)
Less: Offsetting derivative instruments (79) (51)
Less: Cash collateral pledged/received (293) (232)
Less: Cash collateral pledged/received (23) (17)
Total net derivatives presented on balance sheet 81 77
Total net derivatives presented on balance sheet 267 192
Derivatives designated as accounting hedges:    
Derivative [Line Items]    
Notional amount 27,902 11,403
Other assets 93 86
Other liabilities 10 1
Derivatives designated as accounting hedges: | Hedges of floating-rate assets | Cash Flow Hedging    
Derivative [Line Items]    
Notional amount 18,150 2,750
Other assets 1 7
Other liabilities 10 1
Derivative, notional amount, not yet effective 9,500 350
Derivatives designated as accounting hedges: | Hedges of fixed-rate assets | Fair Value Hedging    
Derivative [Line Items]    
Notional amount 8,252 7,653
Other assets 92 79
Other liabilities 0 0
Derivative, notional amount, not yet effective 2,700 2,100
Derivatives designated as accounting hedges: | Hedges of fixed-rate liabilities | Fair Value Hedging    
Derivative [Line Items]    
Notional amount 1,500 1,000
Other assets 0 0
Other liabilities 0 0
Derivatives not designated as hedging instruments    
Derivative [Line Items]    
Notional amount 32,979 29,224
Other assets 360 274
Other liabilities 359 259
Derivatives not designated as hedging instruments | Customer-facing interest rate derivatives    
Derivative [Line Items]    
Notional amount 28,134 22,428
Other assets 243 251
Other liabilities 246 241
Derivatives not designated as hedging instruments | Customer commodity derivatives    
Derivative [Line Items]    
Notional amount 2,615 853
Other assets 113 18
Other liabilities 110 17
Derivatives not designated as hedging instruments | Other interest rate derivatives    
Derivative [Line Items]    
Notional amount 1,810 5,571
Other assets 2 2
Other liabilities 1 0
Derivatives not designated as hedging instruments | Foreign exchange derivatives    
Derivative [Line Items]    
Notional amount 379 308
Other assets 2 3
Other liabilities 2 1
Derivatives not designated as hedging instruments | Purchased credit derivatives    
Derivative [Line Items]    
Notional amount 41 64
Other assets 0 0
Other liabilities $ 0 $ 0