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, 2021
Dec. 31, 2020
Dec. 31, 2019
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option $ 473 $ 995 $ 5,061
Gains (losses) related to borrower-specific credit risk 162 (361) 194
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 275 107 203
Trading inventory – other      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option (211) 3,216 5,795
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 118 19 104
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 58 103 98
Short-term borrowings      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option 883 (170) (24)
Unfunded loan commitments      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option   (65) 79
Long-term debt      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option (645) (2,228) (1,176)
Other      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option (5) 13 (18)
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 439 1,035 4,977
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 275 107 203
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 (211) 3,216 5,795
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 78 22 92
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 883 (170) (24)
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
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 (604) (2,175) (1,098)
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 18 35 9
Other Income      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Gains (Losses) Related to Assets and Liabilities Accounted for Under the Fair Value Option 34 (40) 84
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 40 (3) 12
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 58 103 98
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   (65) 79
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 (41) (53) (78)
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) $ (22) $ (27)