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
Jun. 30, 2019
Dec. 31, 2018
Jun. 30, 2018
On-balance sheet assets      
Trading account assets $ 251,987 $ 214,348  
Debt securities carried at fair value 246,094 238,101  
Held-to-maturity securities 199,981 203,652  
Loans and leases 963,800 946,895  
All other assets 132,360 116,320  
Total assets 2,395,892 2,354,507 $ 2,291,670
Total liabilities 2,124,484 2,089,182  
Commercial Mortgage      
On-balance sheet assets      
Debt securities carried at fair value 14,525    
Unconsolidated VIEs | Agency      
Variable Interest Entity [Line Items]      
Maximum loss exposure 15,498 16,011  
On-balance sheet assets      
All other assets 0 0  
Total assets 15,498 16,011  
Principal balance outstanding 174,853 187,512  
Unconsolidated VIEs | Agency | Senior Lien      
On-balance sheet assets      
Trading account assets 736 460  
Debt securities carried at fair value 8,930 9,381  
Held-to-maturity securities 5,832 6,170  
Unconsolidated VIEs | Non-agency | Prime      
Variable Interest Entity [Line Items]      
Maximum loss exposure 394 448  
On-balance sheet assets      
All other assets 3 3  
Total assets 241 279  
Principal balance outstanding 8,084 8,954  
Unconsolidated VIEs | Non-agency | Prime | Senior Lien      
On-balance sheet assets      
Trading account assets 21 30  
Debt securities carried at fair value 217 246  
Held-to-maturity securities 0 0  
Unconsolidated VIEs | Non-agency | Subprime      
Variable Interest Entity [Line Items]      
Maximum loss exposure 1,897 1,897  
On-balance sheet assets      
All other assets 37 37  
Total assets 1,550 1,543  
Principal balance outstanding 8,058 8,719  
Unconsolidated VIEs | Non-agency | Subprime | Senior Lien      
On-balance sheet assets      
Trading account assets 72 36  
Debt securities carried at fair value 1,441 1,470  
Held-to-maturity securities 0 0  
Unconsolidated VIEs | Non-agency | Alt-A      
Variable Interest Entity [Line Items]      
Maximum loss exposure 142 217  
On-balance sheet assets      
All other assets 2 2  
Total assets 142 217  
Principal balance outstanding 21,676 23,467  
Unconsolidated VIEs | Non-agency | Alt-A | Senior Lien      
On-balance sheet assets      
Trading account assets 21 90  
Debt securities carried at fair value 119 125  
Held-to-maturity securities 0 0  
Unconsolidated VIEs | Commercial Mortgage      
Variable Interest Entity [Line Items]      
Maximum loss exposure 826 767  
On-balance sheet assets      
All other assets 49 40  
Total assets 699 665  
Principal balance outstanding 42,785 43,593  
Unconsolidated VIEs | Commercial Mortgage | Senior Lien      
On-balance sheet assets      
Trading account assets 41 97  
Debt securities carried at fair value 0 0  
Held-to-maturity securities 609 528  
Consolidated VIEs      
On-balance sheet assets      
Trading account assets 5,469 5,798  
Loans and leases 40,676 43,850  
All other assets 387 337  
Total assets 45,650 49,073  
Total liabilities 9,265 11,716  
Consolidated VIEs | Agency      
Variable Interest Entity [Line Items]      
Maximum loss exposure 11,685 13,296  
On-balance sheet assets      
Trading account assets 539 1,318  
Loans and leases 10,977 11,858  
All other assets 170 143  
Total assets 11,686 13,319  
Total liabilities 3 26  
Consolidated VIEs | Non-agency | Prime      
Variable Interest Entity [Line Items]      
Maximum loss exposure 6 7  
On-balance sheet assets      
Trading account assets 135 150  
Loans and leases 0 0  
All other assets 0 0  
Total assets 135 150  
Total liabilities 129 143  
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