Quarterly report pursuant to Section 13 or 15(d)

Securitizations and Other Variable Interest Entities - First Lien Mortgages VIE (Details)

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Securitizations and Other Variable Interest Entities - First Lien Mortgages VIE (Details) - USD ($)
$ in Millions
Mar. 31, 2019
Dec. 31, 2018
Mar. 31, 2018
On-balance sheet assets      
Trading account assets $ 239,062 $ 214,348  
Debt securities carried at fair value 241,956 238,101  
Held-to-maturity securities 198,718 203,652  
Loans and leases 945,615 946,895  
All other assets 131,884 116,320  
Total assets 2,377,164 2,354,507 $ 2,328,478
Total liabilities 2,110,154 2,089,182  
Commercial Mortgage      
On-balance sheet assets      
Debt securities carried at fair value 14,369    
Unconsolidated VIEs | Agency      
Variable Interest Entity [Line Items]      
Maximum loss exposure 15,689 16,011  
On-balance sheet assets      
All other assets 0 0  
Total assets 15,689 16,011  
Principal balance outstanding 182,968 187,512  
Unconsolidated VIEs | Agency | Senior Lien      
On-balance sheet assets      
Trading account assets 467 460  
Debt securities carried at fair value 9,194 9,381  
Held-to-maturity securities 6,028 6,170  
Unconsolidated VIEs | Non-agency | Prime      
Variable Interest Entity [Line Items]      
Maximum loss exposure 420 448  
On-balance sheet assets      
All other assets 3 3  
Total assets 263 279  
Principal balance outstanding 8,285 8,954  
Unconsolidated VIEs | Non-agency | Prime | Senior Lien      
On-balance sheet assets      
Trading account assets 26 30  
Debt securities carried at fair value 234 246  
Held-to-maturity securities 0 0  
Unconsolidated VIEs | Non-agency | Subprime      
Variable Interest Entity [Line Items]      
Maximum loss exposure 1,880 1,897  
On-balance sheet assets      
All other assets 38 37  
Total assets 1,527 1,543  
Principal balance outstanding 8,565 8,719  
Unconsolidated VIEs | Non-agency | Subprime | Senior Lien      
On-balance sheet assets      
Trading account assets 35 36  
Debt securities carried at fair value 1,454 1,470  
Held-to-maturity securities 0 0  
Unconsolidated VIEs | Non-agency | Alt-A      
Variable Interest Entity [Line Items]      
Maximum loss exposure 217 217  
On-balance sheet assets      
All other assets 2 2  
Total assets 217 217  
Principal balance outstanding 22,661 23,467  
Unconsolidated VIEs | Non-agency | Alt-A | Senior Lien      
On-balance sheet assets      
Trading account assets 91 90  
Debt securities carried at fair value 124 125  
Held-to-maturity securities 0 0  
Unconsolidated VIEs | Commercial Mortgage      
Variable Interest Entity [Line Items]      
Maximum loss exposure 762 767  
On-balance sheet assets      
All other assets 37 40  
Total assets 661 665  
Principal balance outstanding 44,621 43,593  
Unconsolidated VIEs | Commercial Mortgage | Senior Lien      
On-balance sheet assets      
Trading account assets 64 97  
Debt securities carried at fair value 0 0  
Held-to-maturity securities 560 528  
Consolidated VIEs      
On-balance sheet assets      
Trading account assets 5,453 5,798  
Loans and leases 41,528 43,850  
All other assets 332 337  
Total assets 46,429 49,073  
Total liabilities 9,754 11,716  
Consolidated VIEs | Agency      
Variable Interest Entity [Line Items]      
Maximum loss exposure 12,316 13,296  
On-balance sheet assets      
Trading account assets 716 1,318  
Loans and leases 11,467 11,858  
All other assets 146 143  
Total assets 12,329 13,319  
Total liabilities 16 26  
Consolidated VIEs | Non-agency | Prime      
Variable Interest Entity [Line Items]      
Maximum loss exposure 7 7  
On-balance sheet assets      
Trading account assets 143 150  
Loans and leases 0 0  
All other assets 0 0  
Total assets 143 150  
Total liabilities 136 143  
Consolidated VIEs | Non-agency | Subprime      
Variable Interest Entity [Line Items]      
Maximum loss exposure 0 0  
On-balance sheet assets      
Trading account assets 0 0  
Loans and leases 0 0  
All other assets 0 0  
Total assets 0 0  
Total liabilities 0 0  
Consolidated VIEs | Non-agency | Alt-A      
Variable Interest Entity [Line Items]      
Maximum loss exposure 0 0  
On-balance sheet assets      
Trading account assets 0 0  
Loans and leases 0 0  
All other assets 0 0  
Total assets 0 0  
Total liabilities 0 0  
Consolidated VIEs | Commercial Mortgage      
Variable Interest Entity [Line Items]      
Maximum loss exposure 0 76  
On-balance sheet assets      
Trading account assets 0 76  
Loans and leases 0 0  
All other assets 0 0  
Total assets 0 76  
Total liabilities $ 0 $ 0