Annual report pursuant to Section 13 and 15(d)

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

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Fair Value Option - Gains (Losses) Related to Assets and Liabilities (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option $ 4,833 $ 3,363 $ 473
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 251 (164) 275
Gains (Losses) Related to Borrower-specific Credit Risk for Assets and Liabilities Accounted for Under the Fair Value Option (3) (950) 128
Trading inventory – other      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option 5,121 (1,159) (211)
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 (107) (85) 118
Gains (Losses) Related to Borrower-specific Credit Risk for Assets and Liabilities Accounted for Under the Fair Value Option 44 (51) 7
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 22 (304) 58
Gains (Losses) Related to Borrower-specific Credit Risk for Assets and Liabilities Accounted for Under the Fair Value Option (15) (23) 28
Short-term borrowings      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option 7 639 883
Unfunded loan commitments      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option 38 8  
Gains (Losses) Related to Borrower-specific Credit Risk for Assets and Liabilities Accounted for Under the Fair Value Option 39 8 (1)
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 609 11  
Long-term debt      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option (1,178) 4,313 (645)
Other      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option 70 104 (5)
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 4,763 3,702 439
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 251 (164) 275
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 5,121 (1,159) (211)
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 (174) (58) 78
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 7 639 883
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 (1) 0  
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 609 11  
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 (1,143) 4,359 (604)
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 93 74 18
Other Income      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option 70 (339) 34
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 0 0 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 67 (27) 40
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 22 (304) 58
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 39 8  
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 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 (35) (46) (41)
Other Income | Other      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option $ (23) $ 30 $ (23)