Quarterly report pursuant to Section 13 or 15(d)

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

v3.20.2
Securitizations and Other Variable Interest Entities - Other Asset-backed Securitizations, Additional Information (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Unconsolidated VIEs          
Variable Interest Entity [Line Items]          
Liquidity commitments to unconsolidated securitization trusts $ 933   $ 933   $ 1,100
Held-to-maturity Securities          
Variable Interest Entity [Line Items]          
Securities received as resecuritization proceeds 1,700   1,700    
Credit Card          
Variable Interest Entity [Line Items]          
Principal balance outstanding $ 7,000   $ 7,000   7,400
Transferred financial assets, stated interest rate 0.00%   0.00%    
Resecuritization Trusts          
Variable Interest Entity [Line Items]          
Cash proceeds from new securitizations $ 10,700 $ 4,100 $ 18,100 $ 8,500  
Resecuritization Trusts | Debt securities          
Variable Interest Entity [Line Items]          
Cash proceeds from new securitizations 4,400 $ 1,500 4,900 $ 2,800  
Municipal Bond Trusts | Unconsolidated VIEs          
Variable Interest Entity [Line Items]          
Liquidity commitments to unconsolidated securitization trusts 3,300   $ 3,300   $ 3,700
Weighted average remaining life of bonds held in the trusts in years     7 years    
Level 2 | Trading account assets          
Variable Interest Entity [Line Items]          
Securities received as resecuritization proceeds 654   $ 1,200    
Level 2 | Debt Securities Carried at Fair Value          
Variable Interest Entity [Line Items]          
Securities received as resecuritization proceeds $ 2,100   $ 2,100