Annual report pursuant to Section 13 and 15(d)

Securitizations and Other Variable Interest Entities - Home Equity Loan, Credit Card and Other Asset-backed VIEs (Details)

v3.6.0.2
Securitizations and Other Variable Interest Entities - Home Equity Loan, Credit Card and Other Asset-backed VIEs (Details) - USD ($)
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
On-balance sheet assets        
Trading account assets $ 180,209,000,000 $ 176,527,000,000    
Debt securities carried at fair value 313,660,000,000 322,380,000,000    
Held-to-maturity securities 117,071,000,000 84,508,000,000    
Loans and leases 906,683,000,000 896,983,000,000    
Allowance for loan and lease losses (11,237,000,000) (12,234,000,000) $ (14,419,000,000) $ (17,428,000,000)
All other assets 120,709,000,000 114,688,000,000    
Total assets 2,187,702,000,000 2,144,287,000,000    
On-balance sheet liabilities        
Long-term debt 216,823,000,000 236,764,000,000    
Total liabilities 1,920,862,000,000 1,888,111,000,000    
Other than temporary impairment losses recorded on debt securities 19,000,000 81,000,000 $ 16,000,000  
Home equity lines of credit | Unconsolidated VIEs        
Variable Interest Entity [Line Items]        
Maximum loss exposure 2,732,000,000 3,988,000,000    
On-balance sheet assets        
All other assets 0 0    
Total assets 46,000,000 57,000,000    
Home equity lines of credit | Consolidated VIEs        
Variable Interest Entity [Line Items]        
Maximum loss exposure 149,000,000 231,000,000    
On-balance sheet assets        
Trading account assets 0 0    
Loans and leases 244,000,000 321,000,000    
Allowance for loan and lease losses (16,000,000) (18,000,000)    
All other assets 7,000,000 20,000,000    
Total assets 235,000,000 323,000,000    
On-balance sheet liabilities        
Short-term borrowings 0 0    
Long-term debt 108,000,000 183,000,000    
All other liabilities 0 0    
Total liabilities 108,000,000 183,000,000    
Home equity lines of credit | Senior Lien | Unconsolidated VIEs        
On-balance sheet assets        
Trading account assets 0 0    
Debt securities carried at fair value 46,000,000 57,000,000    
Held-to-maturity securities 0 0    
Home equity lines of credit | Junior Lien | Unconsolidated VIEs        
On-balance sheet assets        
Trading account assets 0 0    
Debt securities carried at fair value 0 0    
Credit Card Receivable | Unconsolidated VIEs        
Variable Interest Entity [Line Items]        
Maximum loss exposure 0 0    
On-balance sheet assets        
All other assets 0 0    
Total assets 0 0    
Credit Card Receivable | Consolidated VIEs        
Variable Interest Entity [Line Items]        
Maximum loss exposure 25,859,000,000 32,678,000,000    
On-balance sheet assets        
Trading account assets 0 0    
Loans and leases 35,135,000,000 43,194,000,000    
Allowance for loan and lease losses (1,007,000,000) (1,293,000,000)    
All other assets 793,000,000 342,000,000    
Total assets 34,921,000,000 42,243,000,000    
On-balance sheet liabilities        
Short-term borrowings 0 0    
Long-term debt 9,049,000,000 9,550,000,000    
All other liabilities 13,000,000 15,000,000    
Total liabilities 9,062,000,000 9,565,000,000    
Residual interests held 17,600,000,000 24,700,000,000    
Credit Card Receivable | Senior Lien | Unconsolidated VIEs        
On-balance sheet assets        
Trading account assets 0 0    
Debt securities carried at fair value 0 0    
Held-to-maturity securities 0 0    
Credit Card Receivable | Junior Lien | Unconsolidated VIEs        
On-balance sheet assets        
Trading account assets 0 0    
Debt securities carried at fair value 0 0    
Resecuritization Trusts | Unconsolidated VIEs        
Variable Interest Entity [Line Items]        
Maximum loss exposure 9,906,000,000 13,046,000,000    
On-balance sheet assets        
All other assets 0 0    
Total assets 9,906,000,000 13,046,000,000    
Resecuritization Trusts | Consolidated VIEs        
Variable Interest Entity [Line Items]        
Maximum loss exposure 420,000,000 354,000,000    
On-balance sheet assets        
Trading account assets 1,428,000,000 771,000,000    
Loans and leases 0 0    
Allowance for loan and lease losses 0 0    
All other assets 0 0    
Total assets 1,428,000,000 771,000,000    
On-balance sheet liabilities        
Short-term borrowings 0 0    
Long-term debt 1,008,000,000 417,000,000    
All other liabilities 0 0    
Total liabilities 1,008,000,000 417,000,000    
Resecuritization Trusts | Senior Lien | Unconsolidated VIEs        
On-balance sheet assets        
Trading account assets 902,000,000 1,248,000,000    
Debt securities carried at fair value 2,338,000,000 4,341,000,000    
Held-to-maturity securities 6,569,000,000 7,370,000,000    
Resecuritization Trusts | Junior Lien | Unconsolidated VIEs        
On-balance sheet assets        
Trading account assets 27,000,000 17,000,000    
Debt securities carried at fair value 70,000,000 70,000,000    
Municipal Bond Trusts | Unconsolidated VIEs        
Variable Interest Entity [Line Items]        
Maximum loss exposure 1,635,000,000 1,572,000,000    
On-balance sheet assets        
All other assets 0 0    
Total assets 0 2,000,000    
Municipal Bond Trusts | Consolidated VIEs        
Variable Interest Entity [Line Items]        
Maximum loss exposure 1,442,000,000 1,973,000,000    
On-balance sheet assets        
Trading account assets 1,454,000,000 1,984,000,000    
Loans and leases 0 0    
Allowance for loan and lease losses 0 0    
All other assets 0 1,000,000    
Total assets 1,454,000,000 1,985,000,000    
On-balance sheet liabilities        
Short-term borrowings 348,000,000 681,000,000    
Long-term debt 12,000,000 12,000,000    
All other liabilities 0 0    
Total liabilities 360,000,000 693,000,000    
Municipal Bond Trusts | Senior Lien | Unconsolidated VIEs        
On-balance sheet assets        
Trading account assets 0 2,000,000    
Debt securities carried at fair value 0 0    
Held-to-maturity securities 0 0    
Municipal Bond Trusts | Junior Lien | Unconsolidated VIEs        
On-balance sheet assets        
Trading account assets 0 0    
Debt securities carried at fair value 0 0    
Automobile and Other Securitization Trusts | Unconsolidated VIEs        
Variable Interest Entity [Line Items]        
Maximum loss exposure 47,000,000 63,000,000    
On-balance sheet assets        
All other assets 0 10,000,000    
Total assets 47,000,000 63,000,000    
Automobile and Other Securitization Trusts | Consolidated VIEs        
Variable Interest Entity [Line Items]        
Maximum loss exposure 0 0    
On-balance sheet assets        
Trading account assets 0 0    
Loans and leases 0 0    
Allowance for loan and lease losses 0 0    
All other assets 0 0    
Total assets 0 0    
On-balance sheet liabilities        
Short-term borrowings 0 0    
Long-term debt 0 0    
All other liabilities 0 0    
Total liabilities 0 0    
Automobile and Other Securitization Trusts | Senior Lien | Unconsolidated VIEs        
On-balance sheet assets        
Trading account assets 0 0    
Debt securities carried at fair value 47,000,000 53,000,000    
Held-to-maturity securities 0 0    
Automobile and Other Securitization Trusts | Junior Lien | Unconsolidated VIEs        
On-balance sheet assets        
Trading account assets 0 0    
Debt securities carried at fair value 0 0    
Home Equity Loan, Credit Card and Other Asset-backed Securitization Trusts | Unconsolidated VIEs        
Variable Interest Entity [Line Items]        
Other than temporary impairment losses recorded on held-to-maturity securities   0    
On-balance sheet liabilities        
Other than temporary impairment losses recorded on debt securities 2,000,000 5,000,000    
Unconsolidated VIEs | Home equity lines of credit        
On-balance sheet assets        
Unconsolidated total assets of VIEs 4,274,000,000 5,883,000,000    
Unconsolidated VIEs | Credit Card Receivable        
On-balance sheet assets        
Unconsolidated total assets of VIEs 0 0    
Unconsolidated VIEs | Resecuritization Trusts        
On-balance sheet assets        
Unconsolidated total assets of VIEs 22,155,000,000 35,362,000,000    
Unconsolidated VIEs | Municipal Bond Trusts        
On-balance sheet assets        
Unconsolidated total assets of VIEs 2,406,000,000 2,518,000,000    
Unconsolidated VIEs | Automobile and Other Securitization Trusts        
On-balance sheet assets        
Unconsolidated total assets of VIEs $ 174,000,000 $ 314,000,000