Annual report pursuant to Section 13 and 15(d)

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

v3.20.4
Securitizations and Other Variable Interest Entities - Other Asset-backed Securitizations, Additional Information (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Unconsolidated VIEs      
Variable Interest Entity [Line Items]      
Liquidity commitments to unconsolidated securitization trusts $ 929 $ 1,100  
Held-to-maturity Securities      
Variable Interest Entity [Line Items]      
Securities received as resecuritization proceeds 1,700    
Credit card      
Variable Interest Entity [Line Items]      
Principal balance outstanding $ 6,800 $ 7,400  
Transferred financial assets, stated interest rate 0.00% 0.00%  
Credit card | Senior securities:      
Variable Interest Entity [Line Items]      
Transferred financial assets, amount $ 1,000 $ 1,300 $ 4,000
Credit card | Junior Lien      
Variable Interest Entity [Line Items]      
Transferred financial assets, amount 161 202 650
Resecuritization Trusts      
Variable Interest Entity [Line Items]      
Cash proceeds from new securitizations 39,000 24,400 22,800
Resecuritization Trusts | Debt securities      
Variable Interest Entity [Line Items]      
Cash proceeds from new securitizations 6,100 5,200 $ 4,100
Municipal Bond Trusts | Unconsolidated VIEs      
Variable Interest Entity [Line Items]      
Liquidity commitments to unconsolidated securitization trusts $ 3,500 $ 3,700  
Weighted average remaining life of bonds held in the trusts in years 6 years 9 months 18 days    
Level 2 | Total trading account assets      
Variable Interest Entity [Line Items]      
Securities received as resecuritization proceeds $ 2,400    
Level 2 | Debt Securities Carried at Fair Value      
Variable Interest Entity [Line Items]      
Securities received as resecuritization proceeds $ 2,100