Annual report [Section 13 and 15(d), not S-K Item 405]

Fair Value Option - Gains (Losses) Related to Assets and Liabilities (Details)

v3.25.4
Fair Value Option - Gains (Losses) Related to Assets and Liabilities (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option $ 547 $ 4,184 $ 4,833
Federal funds sold and securities borrowed or purchased under agreements to resell      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option 599 319 60
Loans reported as trading account assets      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option 431 10 251
Gains (Losses) Related to Borrower-specific Credit Risk for Assets and Liabilities Accounted for Under the Fair Value Option 23 (38) (3)
Trading inventory – other      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option 1,486 2,965 5,121
Consumer and commercial loans      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option 161 113 (107)
Gains (Losses) Related to Borrower-specific Credit Risk for Assets and Liabilities Accounted for Under the Fair Value Option 9 18 44
Loans held-for-sale      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option 83 (30) 22
Gains (Losses) Related to Borrower-specific Credit Risk for Assets and Liabilities Accounted for Under the Fair Value Option 0 (8) (15)
Short-term borrowings      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option 43 199 7
Unfunded loan commitments      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option (19) (13) 38
Gains (Losses) Related to Borrower-specific Credit Risk for Assets and Liabilities Accounted for Under the Fair Value Option (19) (13) 39
Accrued expenses and other liabilities      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option (571) 378 609
Long-term debt      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option (911) 550 (1,178)
Gains (Losses) Related to Borrower-specific Credit Risk for Assets and Liabilities Accounted for Under the Fair Value Option 0 (3) 0
Other      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option (755) (307) 10
Market making and similar activities      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option 897 4,228 4,763
Market making and similar activities | Federal funds sold and securities borrowed or purchased under agreements to resell      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option 604 327 74
Market making and similar activities | Loans reported as trading account assets      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option 423 (30) 251
Market making and similar activities | Trading inventory – other      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option 1,486 2,965 5,121
Market making and similar activities | Consumer and commercial loans      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option 154 93 (174)
Market making and similar activities | Loans held-for-sale      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option 0 0 0
Market making and similar activities | Short-term borrowings      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option 43 199 7
Market making and similar activities | Unfunded loan commitments      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option 0 0 (1)
Market making and similar activities | Accrued expenses and other liabilities      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option (515) 378 609
Market making and similar activities | Long-term debt      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option (883) 582 (1,143)
Market making and similar activities | Other      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option (415) (286) 19
Other Income      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option (350) (44) 70
Other Income | Federal funds sold and securities borrowed or purchased under agreements to resell      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option (5) (8) (14)
Other Income | Loans reported as trading account assets      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option 8 40 0
Other Income | Trading inventory – other      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option 0 0 0
Other Income | Consumer and commercial loans      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option 7 20 67
Other Income | Loans held-for-sale      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option 83 (30) 22
Other Income | Short-term borrowings      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option 0 0 0
Other Income | Unfunded loan commitments      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option (19) (13) 39
Other Income | Accrued expenses and other liabilities      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option (56) 0 0
Other Income | Long-term debt      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option (28) (32) (35)
Other Income | Other      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option $ (340) $ (21) $ (9)