Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Gains and Losses (Details)

v3.3.1.900
Fair Value Measurements - Gains and Losses (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total $ 1,937 $ (283) $ 1,998
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Total 548 (1,551) 342
Federal funds purchased and securities loaned or sold under agreements to repurchase      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Liabilities (11)    
Trading account liabilities – Corporate securities and other      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Liabilities 19 1 10
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in Unrealized Gains (losses) relating to liabilities still held at reporting date (3) 1  
Short-term borrowings      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Liabilities 17    
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in Unrealized Gains (losses) relating to liabilities still held at reporting date 1    
Accrued expenses and other liabilities      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Liabilities 1 2 30
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in Unrealized Gains (losses) relating to liabilities still held at reporting date 1 1  
Long-term debt      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Liabilities 287 49 13
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in Unrealized Gains (losses) relating to liabilities still held at reporting date 255 (8) (36)
Corporate securities, trading loans and other      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets (31) 180 242
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in unrealized Gains (losses) relating to assets still held at reporting date (123) 69 (130)
Equity securities      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets 9 0 74
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in unrealized Gains (losses) relating to assets still held at reporting date 3 (8) 40
Non-U.S. sovereign debt      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets 114 30 50
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in unrealized Gains (losses) relating to assets still held at reporting date 74 31 80
Mortgage trading loans and ABS      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets 154 199 53
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in unrealized Gains (losses) relating to assets still held at reporting date (93) 79 (174)
Trading Securities      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets 246 409 419
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in unrealized Gains (losses) relating to assets still held at reporting date (139) 171 (184)
Derivative assets      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets 1,335 463 (304)
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in unrealized Gains (losses) relating to assets still held at reporting date 605 (87) (1,340)
Non-agency residential      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets (12) (2)  
Other debt securities carried at fair value – Non-agency residential MBS      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets (3)    
Non-U.S. securities      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets 0 (7) 5
Other taxable securities      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets 0 9 9
Tax-exempt securities      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets 0 8 3
Available-for-sale Securities      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets (12) 8 17
Loans and leases      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets (23) 69 98
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in unrealized Gains (losses) relating to assets still held at reporting date 13 76 118
Mortgage servicing rights      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets 187 (1,231) 1,941
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in unrealized Gains (losses) relating to assets still held at reporting date (85) (1,753) 1,541
Loans Held-for-Sale      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets (51) 45 62
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in unrealized Gains (losses) relating to assets still held at reporting date (39) (4) 63
Other assets      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets (55) (98) (288)
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in unrealized Gains (losses) relating to assets still held at reporting date (61) 52 180
Trading Account Profits (Losses)      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total 1,125 (7) (750)
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Total 712 (95) (1,563)
Trading Account Profits (Losses) | Federal funds purchased and securities loaned or sold under agreements to repurchase      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Liabilities (11)    
Trading Account Profits (Losses) | Trading account liabilities – Corporate securities and other      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Liabilities 19 1 10
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in Unrealized Gains (losses) relating to liabilities still held at reporting date (3) 1  
Trading Account Profits (Losses) | Short-term borrowings      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Liabilities 17    
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in Unrealized Gains (losses) relating to liabilities still held at reporting date 1    
Trading Account Profits (Losses) | Accrued expenses and other liabilities      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Liabilities 0 0 0
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in Unrealized Gains (losses) relating to liabilities still held at reporting date 0 0  
Trading Account Profits (Losses) | Long-term debt      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Liabilities 339 78 45
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in Unrealized Gains (losses) relating to liabilities still held at reporting date 277 29 (4)
Trading Account Profits (Losses) | Corporate securities, trading loans and other      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets (31) 180 242
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in unrealized Gains (losses) relating to assets still held at reporting date (123) 69 (130)
Trading Account Profits (Losses) | Equity securities      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets 9   74
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in unrealized Gains (losses) relating to assets still held at reporting date 3 (8) 40
Trading Account Profits (Losses) | Non-U.S. sovereign debt      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets 114 30 50
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in unrealized Gains (losses) relating to assets still held at reporting date 74 31 80
Trading Account Profits (Losses) | Mortgage trading loans and ABS      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets 154 199 53
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in unrealized Gains (losses) relating to assets still held at reporting date (93) 79 (174)
Trading Account Profits (Losses) | Trading Securities      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets 246 409 419
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in unrealized Gains (losses) relating to assets still held at reporting date (139) 171 (184)
Trading Account Profits (Losses) | Derivative assets      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets 508 (475) (1,224)
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in unrealized Gains (losses) relating to assets still held at reporting date 507 (276) (1,375)
Trading Account Profits (Losses) | Non-agency residential      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets 0 0  
Trading Account Profits (Losses) | Other debt securities carried at fair value – Non-agency residential MBS      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets 0    
Trading Account Profits (Losses) | Non-U.S. securities      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets   0 0
Trading Account Profits (Losses) | Other taxable securities      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets   0 0
Trading Account Profits (Losses) | Tax-exempt securities      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets   0 0
Trading Account Profits (Losses) | Available-for-sale Securities      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets   0 0
Trading Account Profits (Losses) | Loans and leases      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets (8) 0 0
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in unrealized Gains (losses) relating to assets still held at reporting date (3) 0 0
Trading Account Profits (Losses) | Mortgage servicing rights      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets 73 (6) 0
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in unrealized Gains (losses) relating to assets still held at reporting date 73 (6) 0
Trading Account Profits (Losses) | Loans Held-for-Sale      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets (58) (14) 0
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in unrealized Gains (losses) relating to assets still held at reporting date (1) (14) 0
Trading Account Profits (Losses) | Other assets      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets 0 0 0
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in unrealized Gains (losses) relating to assets still held at reporting date 0 0 0
Mortgage Banking Income (Loss)      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total 813 (470) 2,984
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Total (163) (1,712) 1,721
Mortgage Banking Income (Loss) | Federal funds purchased and securities loaned or sold under agreements to repurchase      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Liabilities 0    
Mortgage Banking Income (Loss) | Trading account liabilities – Corporate securities and other      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Liabilities 0 0 0
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in Unrealized Gains (losses) relating to liabilities still held at reporting date 0 0  
Mortgage Banking Income (Loss) | Short-term borrowings      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Liabilities 0    
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in Unrealized Gains (losses) relating to liabilities still held at reporting date 0    
Mortgage Banking Income (Loss) | Accrued expenses and other liabilities      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Liabilities 0 0 30
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in Unrealized Gains (losses) relating to liabilities still held at reporting date 0 0  
Mortgage Banking Income (Loss) | Long-term debt      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Liabilities 0 0 0
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in Unrealized Gains (losses) relating to liabilities still held at reporting date 0 0 0
Mortgage Banking Income (Loss) | Corporate securities, trading loans and other      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets 0 0 0
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in unrealized Gains (losses) relating to assets still held at reporting date 0 0 0
Mortgage Banking Income (Loss) | Equity securities      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets 0   0
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in unrealized Gains (losses) relating to assets still held at reporting date 0 0 0
Mortgage Banking Income (Loss) | Non-U.S. sovereign debt      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets 0 0 0
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in unrealized Gains (losses) relating to assets still held at reporting date 0 0 0
Mortgage Banking Income (Loss) | Mortgage trading loans and ABS      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets 0 0 0
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in unrealized Gains (losses) relating to assets still held at reporting date 0 0 0
Mortgage Banking Income (Loss) | Trading Securities      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets 0 0 0
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in unrealized Gains (losses) relating to assets still held at reporting date 0 0 0
Mortgage Banking Income (Loss) | Derivative assets      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets 765 834 927
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in unrealized Gains (losses) relating to assets still held at reporting date 36 85 42
Mortgage Banking Income (Loss) | Non-agency residential      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets 0 0  
Mortgage Banking Income (Loss) | Other debt securities carried at fair value – Non-agency residential MBS      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets 0    
Mortgage Banking Income (Loss) | Non-U.S. securities      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets   0 0
Mortgage Banking Income (Loss) | Other taxable securities      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets   0 0
Mortgage Banking Income (Loss) | Tax-exempt securities      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets   0 0
Mortgage Banking Income (Loss) | Available-for-sale Securities      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets   0 0
Mortgage Banking Income (Loss) | Loans and leases      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets 0 0 (38)
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in unrealized Gains (losses) relating to assets still held at reporting date 0 0 (34)
Mortgage Banking Income (Loss) | Mortgage servicing rights      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets 114 (1,225) 1,941
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in unrealized Gains (losses) relating to assets still held at reporting date (158) (1,747) 1,541
Mortgage Banking Income (Loss) | Loans Held-for-Sale      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets 0 0 2
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in unrealized Gains (losses) relating to assets still held at reporting date 0 0 6
Mortgage Banking Income (Loss) | Other assets      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets (66) (79) 122
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in unrealized Gains (losses) relating to assets still held at reporting date (41) (50) 166
Other      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total (1) 194 (236)
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Total (1) 256 184
Other | Federal funds purchased and securities loaned or sold under agreements to repurchase      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Liabilities 0    
Other | Trading account liabilities – Corporate securities and other      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Liabilities 0 0 0
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in Unrealized Gains (losses) relating to liabilities still held at reporting date 0 0  
Other | Short-term borrowings      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Liabilities 0    
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in Unrealized Gains (losses) relating to liabilities still held at reporting date 0    
Other | Accrued expenses and other liabilities      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Liabilities 1 2 0
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in Unrealized Gains (losses) relating to liabilities still held at reporting date 1 1  
Other | Long-term debt      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Liabilities (52) (29) (32)
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in Unrealized Gains (losses) relating to liabilities still held at reporting date (22) (37) (32)
Other | Corporate securities, trading loans and other      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets 0 0 0
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in unrealized Gains (losses) relating to assets still held at reporting date 0 0 0
Other | Equity securities      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets 0   0
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in unrealized Gains (losses) relating to assets still held at reporting date 0 0 0
Other | Non-U.S. sovereign debt      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets 0 0 0
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in unrealized Gains (losses) relating to assets still held at reporting date 0 0 0
Other | Mortgage trading loans and ABS      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets 0 0 0
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in unrealized Gains (losses) relating to assets still held at reporting date 0 0 0
Other | Trading Securities      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets 0 0 0
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in unrealized Gains (losses) relating to assets still held at reporting date 0 0 0
Other | Derivative assets      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets 62 104 (7)
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in unrealized Gains (losses) relating to assets still held at reporting date 62 104 (7)
Other | Non-agency residential      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets (12) (2)  
Other | Other debt securities carried at fair value – Non-agency residential MBS      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets (3)    
Other | Non-U.S. securities      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets   (7) 5
Other | Other taxable securities      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets   9 9
Other | Tax-exempt securities      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets   8 3
Other | Available-for-sale Securities      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets   8 17
Other | Loans and leases      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets (15) 69 136
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in unrealized Gains (losses) relating to assets still held at reporting date 16 76 152
Other | Mortgage servicing rights      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets 0 0 0
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in unrealized Gains (losses) relating to assets still held at reporting date 0 0 0
Other | Loans Held-for-Sale      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets 7 59 60
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in unrealized Gains (losses) relating to assets still held at reporting date (38) 10 57
Other | Other assets      
Level 3 Total Realized and Unrealized Gains (Losses) Related to Assets Included in Earnings      
Total Realized and Unrealized Gains (losses) included in Earnings, Assets 11 (19) (410)
Level 3 Changes in Unrealized Gains (Losses) Relating to Assets Still Held at Reporting Date      
Change in unrealized Gains (losses) relating to assets still held at reporting date $ (20) $ 102 $ 14