Quarterly report pursuant to Section 13 or 15(d)

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

v3.8.0.1
Fair Value Option - Gains (Losses) Relating to Assets and Liabilities (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Fair Value, Option, Quantitative Disclosures [Line Items]        
Gains (losses) relating to assets and liabilities accounted for under the fair value option $ 951 $ 1,150 $ 2,915 $ 990
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 75 125 272 251
Trading inventory – other        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Gains (losses) relating to assets and liabilities accounted for under the fair value option 1,217 907 2,890 551
Loans held-for-sale        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Gains (losses) relating to assets and liabilities accounted for under the fair value option 92 139 275 560
Unfunded loan commitments        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Gains (losses) relating to assets and liabilities accounted for under the fair value option 21 133 55 444
Long-term debt        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Gains (losses) relating to assets and liabilities accounted for under the fair value option (454) (162) (580) (795)
Other        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Gains (losses) relating to assets and liabilities accounted for under the fair value option 0 8 3 (21)
Trading Account Profits        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Gains (losses) relating to assets and liabilities accounted for under the fair value option 879 867 2,650 87
Trading Account Profits | 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 75 125 272 251
Trading Account Profits | Trading inventory – other        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Gains (losses) relating to assets and liabilities accounted for under the fair value option 1,217 907 2,890 551
Trading Account Profits | Loans held-for-sale        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Gains (losses) relating to assets and liabilities accounted for under the fair value option 0 5 0 10
Trading Account Profits | 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 0 0
Trading Account Profits | Long-term debt        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Gains (losses) relating to assets and liabilities accounted for under the fair value option (416) (138) (471) (718)
Trading Account Profits | Other        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Gains (losses) relating to assets and liabilities accounted for under the fair value option 3 (32) (41) (7)
Mortgage Banking Income (Loss)        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Gains (losses) relating to assets and liabilities accounted for under the fair value option 73 132 182 493
Mortgage Banking Income (Loss) | 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 0 0
Mortgage Banking Income (Loss) | 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 0 0
Mortgage Banking Income (Loss) | Loans held-for-sale        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Gains (losses) relating to assets and liabilities accounted for under the fair value option 73 132 182 493
Mortgage Banking Income (Loss) | 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 0 0
Mortgage Banking Income (Loss) | Long-term debt        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Gains (losses) relating to assets and liabilities accounted for under the fair value option 0 0 0 0
Mortgage Banking Income (Loss) | Other        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Gains (losses) relating to assets and liabilities accounted for under the fair value option 0 0 0 0
Other Income        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Gains (losses) relating to assets and liabilities accounted for under the fair value option (1) 151 83 410
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 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 0 0
Other Income | Loans held-for-sale        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Gains (losses) relating to assets and liabilities accounted for under the fair value option 19 2 93 57
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 21 133 55 444
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 (38) (24) (109) (77)
Other Income | Other        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Gains (losses) relating to assets and liabilities accounted for under the fair value option $ (3) $ 40 $ 44 $ (14)