v3.25.4
FAIR VALUE ELECTIONS - Changes in Fair Value Gains (Losses) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Total assets    
Fair Value, Balance Sheet Grouping, Financial Statement Captions.    
Gains (losses) from changes in fair value $ 1,534 $ 1,229
Securities borrowed and purchased under agreements to resell    
Fair Value, Balance Sheet Grouping, Financial Statement Captions.    
Gains (losses) from changes in fair value 184 77
Trading account assets    
Fair Value, Balance Sheet Grouping, Financial Statement Captions.    
Gains (losses) from changes in fair value 46 (28)
Total loans    
Fair Value, Balance Sheet Grouping, Financial Statement Captions.    
Gains (losses) from changes in fair value 1,254 1,127
Corporate    
Fair Value, Balance Sheet Grouping, Financial Statement Captions.    
Gains (losses) from changes in fair value 1,250 1,137
Consumer loans    
Fair Value, Balance Sheet Grouping, Financial Statement Captions.    
Gains (losses) from changes in fair value 4 (10)
Total other assets    
Fair Value, Balance Sheet Grouping, Financial Statement Captions.    
Gains (losses) from changes in fair value 43 53
MSRs    
Fair Value, Balance Sheet Grouping, Financial Statement Captions.    
Gains (losses) from changes in fair value (22) 37
Certain mortgage loans (HFS)    
Fair Value, Balance Sheet Grouping, Financial Statement Captions.    
Gains (losses) from changes in fair value 65 16
Total liabilities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions.    
Gains (losses) from changes in fair value (14,980) (6,991)
Deposits    
Fair Value, Balance Sheet Grouping, Financial Statement Captions.    
Gains (losses) from changes in fair value (572) (38)
Securities loaned and sold under agreements to repurchase    
Fair Value, Balance Sheet Grouping, Financial Statement Captions.    
Gains (losses) from changes in fair value (61) 46
Trading account liabilities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions.    
Gains (losses) from changes in fair value (402) (190)
Short-term borrowings    
Fair Value, Balance Sheet Grouping, Financial Statement Captions.    
Gains (losses) from changes in fair value (3,421) (524)
Long-term debt    
Fair Value, Balance Sheet Grouping, Financial Statement Captions.    
Gains (losses) from changes in fair value (10,524) (6,285)
Investments    
Fair Value, Balance Sheet Grouping, Financial Statement Captions.    
Gains (losses) from changes in fair value $ 7 $ 0