v3.26.1
DERIVATIVES - Fair Value Hedges (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Gain (loss) on fair value hedges    
Gain (loss) under mark-to-market approach $ 84 $ 170
Gain (loss) under amortization approach 1 32
Excluded component of fair value hedges | Excluded component of fair value hedges    
Gain (loss) on fair value hedges    
Other comprehensive income (loss), pretax 19 10
Other revenue    
Gain (loss) on fair value hedges    
Gain (loss) on the hedging derivatives included in assessment of the effectiveness of fair value hedges 517 (265)
Gain (loss) on the hedged item in designated and qualifying fair value hedges (517) 265
Net gain (loss) on the hedging derivatives excluded from assessment of the effectiveness of fair value hedges 74 229
Net interest income    
Gain (loss) on fair value hedges    
Gain (loss) on the hedging derivatives included in assessment of the effectiveness of fair value hedges (601) (414)
Gain (loss) on the hedged item in designated and qualifying fair value hedges 603 419
Net gain (loss) on the hedging derivatives excluded from assessment of the effectiveness of fair value hedges 0 0
Interest rate contracts (gross) | Other revenue    
Gain (loss) on fair value hedges    
Gain (loss) on the hedging derivatives included in assessment of the effectiveness of fair value hedges 0 0
Gain (loss) on the hedged item in designated and qualifying fair value hedges 0 0
Net gain (loss) on the hedging derivatives excluded from assessment of the effectiveness of fair value hedges 0 0
Interest rate contracts (gross) | Net interest income    
Gain (loss) on fair value hedges    
Gain (loss) on the hedging derivatives included in assessment of the effectiveness of fair value hedges (601) (414)
Gain (loss) on the hedged item in designated and qualifying fair value hedges 603 419
Net gain (loss) on the hedging derivatives excluded from assessment of the effectiveness of fair value hedges 0 0
Foreign exchange contracts (gross) | Other revenue    
Gain (loss) on fair value hedges    
Gain (loss) on the hedging derivatives included in assessment of the effectiveness of fair value hedges (127) 9
Gain (loss) on the hedged item in designated and qualifying fair value hedges 127 (9)
Net gain (loss) on the hedging derivatives excluded from assessment of the effectiveness of fair value hedges (10) 27
Foreign exchange contracts (gross) | Net interest income    
Gain (loss) on fair value hedges    
Gain (loss) on the hedging derivatives included in assessment of the effectiveness of fair value hedges 0 0
Gain (loss) on the hedged item in designated and qualifying fair value hedges 0 0
Net gain (loss) on the hedging derivatives excluded from assessment of the effectiveness of fair value hedges 0 0
Commodity hedges | Other revenue    
Gain (loss) on fair value hedges    
Gain (loss) on the hedging derivatives included in assessment of the effectiveness of fair value hedges 644 (274)
Gain (loss) on the hedged item in designated and qualifying fair value hedges (644) 274
Net gain (loss) on the hedging derivatives excluded from assessment of the effectiveness of fair value hedges 84 202
Commodity hedges | Net interest income    
Gain (loss) on fair value hedges    
Gain (loss) on the hedging derivatives included in assessment of the effectiveness of fair value hedges 0 0
Gain (loss) on the hedged item in designated and qualifying fair value hedges 0 0
Net gain (loss) on the hedging derivatives excluded from assessment of the effectiveness of fair value hedges $ 0 $ 0