Quarterly report pursuant to Section 13 or 15(d)

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

v3.20.1
Fair Value Option - Gains (Losses) Relating to Assets and Liabilities (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Fair Value, Option, Quantitative Disclosures [Line Items]    
Gains (losses) relating to assets and liabilities accounted for under the fair value option $ (2,358) $ 1,648
Loans reported as trading account assets    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Gains (losses) relating to assets and liabilities accounted for under the fair value option (387) 91
Trading inventory – other    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Gains (losses) relating to assets and liabilities accounted for under the fair value option (2,793) 2,544
Consumer and commercial loans    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Gains (losses) relating to assets and liabilities accounted for under the fair value option (441) 19
Short-term borrowings    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Gains (losses) relating to assets and liabilities accounted for under the fair value option 517 0
Unfunded loan commitments    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Gains (losses) relating to assets and liabilities accounted for under the fair value option (116) 63
Long-term debt    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Gains (losses) relating to assets and liabilities accounted for under the fair value option 900 (1,103)
Other    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Gains (losses) relating to assets and liabilities accounted for under the fair value option (38) 34
Market making and similar activities    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Gains (losses) relating to assets and liabilities accounted for under the fair value option (1,817) 1,567
Market making and similar activities | Loans reported as trading account assets    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Gains (losses) relating to assets and liabilities accounted for under the fair value option (387) 91
Market making and similar activities | Trading inventory – other    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Gains (losses) relating to assets and liabilities accounted for under the fair value option (2,793) 2,544
Market making and similar activities | Consumer and commercial loans    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Gains (losses) relating to assets and liabilities accounted for under the fair value option (83) 1
Market making and similar activities | Short-term borrowings    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Gains (losses) relating to assets and liabilities accounted for under the fair value option 517 0
Market making and similar activities | Unfunded loan commitments    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Gains (losses) relating 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) relating to assets and liabilities accounted for under the fair value option 916 (1,080)
Market making and similar activities | Other    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Gains (losses) relating to assets and liabilities accounted for under the fair value option 13 11
Other Income    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Gains (losses) relating to assets and liabilities accounted for under the fair value option (541) 81
Other Income | Loans reported as trading account assets    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Gains (losses) relating to assets and liabilities accounted for under the fair value option 0 0
Other Income | Trading inventory – other    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Gains (losses) relating to assets and liabilities accounted for under the fair value option 0 0
Other Income | Consumer and commercial loans    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Gains (losses) relating to assets and liabilities accounted for under the fair value option (358) 18
Other Income | Short-term borrowings    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Gains (losses) relating to assets and liabilities accounted for under the fair value option 0 0
Other Income | Unfunded loan commitments    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Gains (losses) relating to assets and liabilities accounted for under the fair value option (116) 63
Other Income | Long-term debt    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Gains (losses) relating to assets and liabilities accounted for under the fair value option (16) (23)
Other Income | Other    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Gains (losses) relating to assets and liabilities accounted for under the fair value option $ (51) $ 23