Quarterly report pursuant to Section 13 or 15(d)

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

v3.7.0.1
Fair Value Option - Gains (Losses) Relating to Assets and Liabilities (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Fair Value, Option, Quantitative Disclosures [Line Items]        
Gains (losses) relating to assets and liabilities accounted for under the fair value option $ 745 $ (522) $ 1,951 $ (207)
Federal funds sold and securities borrowed or purchased under agreements to resell        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Gains (losses) relating to assets and liabilities accounted for under the fair value option (8) (9) (20) (1)
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 47 14 197 126
Trading inventory – other        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Gains (losses) relating to assets and liabilities accounted for under the fair value option 522 (243) 1,673 (356)
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 24 (16) 48 13
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 75 170 170 374
Other assets        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Gains (losses) relating to assets and liabilities accounted for under the fair value option   (5)   (3)
Long-term deposits        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Gains (losses) relating to assets and liabilities accounted for under the fair value option 17 (10) 23 (41)
Federal funds purchased and securities loaned or sold under agreements to repurchase        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Gains (losses) relating to assets and liabilities accounted for under the fair value option 2 11 (43) 3
Short-term borrowings        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Gains (losses) relating to assets and liabilities accounted for under the fair value option (3)   (5)  
Unfunded loan commitments        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Gains (losses) relating to assets and liabilities accounted for under the fair value option (4) 163 34 311
Long-term debt        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Gains (losses) relating to assets and liabilities accounted for under the fair value option 73 (597) (126) (633)
Trading Account Profits (Losses)        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Gains (losses) relating to assets and liabilities accounted for under the fair value option 684 (783) 1,771 (780)
Trading Account Profits (Losses) | Federal funds sold and securities borrowed or purchased under agreements to resell        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Gains (losses) relating to assets and liabilities accounted for under the fair value option (8) (9) (20) (1)
Trading Account Profits (Losses) | 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 47 14 197 126
Trading Account Profits (Losses) | Trading inventory – other        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Gains (losses) relating to assets and liabilities accounted for under the fair value option 522 (243) 1,673 (356)
Trading Account Profits (Losses) | 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 4 15 9 34
Trading Account Profits (Losses) | 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 (1) 5 0 5
Trading Account Profits (Losses) | Other assets        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Gains (losses) relating to assets and liabilities accounted for under the fair value option   0   0
Trading Account Profits (Losses) | Long-term deposits        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Gains (losses) relating to assets and liabilities accounted for under the fair value option 14 (2) 15 (11)
Trading Account Profits (Losses) | Federal funds purchased and securities loaned or sold under agreements to repurchase        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Gains (losses) relating to assets and liabilities accounted for under the fair value option 2 11 (43) 3
Trading Account Profits (Losses) | Short-term borrowings        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Gains (losses) relating to assets and liabilities accounted for under the fair value option (3)   (5)  
Trading Account Profits (Losses) | 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 (Losses) | Long-term debt        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Gains (losses) relating to assets and liabilities accounted for under the fair value option 107 (574) (55) (580)
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 46 145 96 314
Mortgage Banking Income (Loss) | Federal funds sold and securities borrowed or purchased under agreements to resell        
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 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) | 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 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 46 145 96 314
Mortgage Banking Income (Loss) | Other assets        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Gains (losses) relating to assets and liabilities accounted for under the fair value option   0   0
Mortgage Banking Income (Loss) | Long-term deposits        
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) | Federal funds purchased and securities loaned or sold under agreements to repurchase        
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) | 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  
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
Other Income (Loss)        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Gains (losses) relating to assets and liabilities accounted for under the fair value option 15 116 84 259
Other Income (Loss) | Federal funds sold and securities borrowed or purchased under agreements to resell        
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 (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
Other 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
Other Income (Loss) | 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 20 (31) 39 (21)
Other 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 30 20 74 55
Other Income (Loss) | Other assets        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Gains (losses) relating to assets and liabilities accounted for under the fair value option   (5)   (3)
Other Income (Loss) | Long-term deposits        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Gains (losses) relating to assets and liabilities accounted for under the fair value option 3 (8) 8 (30)
Other Income (Loss) | Federal funds purchased and securities loaned or sold under agreements to repurchase        
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 (Loss) | 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 (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 (4) 163 34 311
Other 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 $ (34) $ (23) $ (71) $ (53)