Quarterly report pursuant to Section 13 or 15(d)

Securitizations and Other Variable Interest Entities - Other Variable Interest Entities, Additional Information (Details)

v3.7.0.1
Securitizations and Other Variable Interest Entities - Other Variable Interest Entities, Additional Information (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Variable Interest Entity [Line Items]      
Total assets $ 2,247,701 $ 2,185,726 $ 2,187,702
Customer Vehicles      
Variable Interest Entity [Line Items]      
Maximum loss exposure 2,600   2,900
Liquidity commitments to unconsolidated securitization trusts 64   323
Collateralized Debt Obligations      
Variable Interest Entity [Line Items]      
Maximum loss exposure 586   430
Investment Vehicles      
Variable Interest Entity [Line Items]      
Maximum loss exposure 5,300   5,100
Investment Vehicles | Consolidated VIEs      
Variable Interest Entity [Line Items]      
Total assets 778   846
Investment Vehicles | Unconsolidated VIEs      
Variable Interest Entity [Line Items]      
Maximum loss exposure 90   150
Total assets 18,700   17,300
Consolidated total assets of VIEs 67   75
Leveraged Lease Trusts | Consolidated VIEs      
Variable Interest Entity [Line Items]      
Total assets 2,700   2,600
Tax Credit Vehicles      
Investments in Affordable Housing Projects [Abstract]      
Unfunded commitments $ 2,700   2,700
Unfunded commitment payment period 5 years    
Tax credits and other benefits $ 251 193  
Expected tax benefits recognized, as a percentage 25.00%    
Tax Credit Vehicles | Other assets      
Investments in Affordable Housing Projects [Abstract]      
Investments in affordable housing project investments $ 7,400   7,400
Tax Credit Vehicles | Other income      
Investments in Affordable Housing Projects [Abstract]      
Pretax losses 196 $ 198  
Tax Credit Vehicles | Unconsolidated VIEs      
Variable Interest Entity [Line Items]      
Total assets $ 12,800   $ 12,600