Quarterly report pursuant to Section 13 or 15(d)

Securitizations and Other Variable Interest Entities - Home Equity Loan, Credit Card and Other Asset-backed VIEs (Details)

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Securitizations and Other Variable Interest Entities - Home Equity Loan, Credit Card and Other Asset-backed VIEs (Details) - USD ($)
$ in Millions
Mar. 31, 2022
Dec. 31, 2021
Mar. 31, 2021
Dec. 31, 2020
On-balance sheet assets        
Trading account assets $ 313,400 $ 247,080    
Debt securities carried at fair value 297,700 308,073    
Held-to-maturity securities 672,218 674,591    
Total assets 3,238,223 3,169,495 $ 2,969,992  
Loans and leases 993,145 979,124    
Allowance for loan and lease losses (12,104) (12,387) $ (16,168) $ (18,802)
Other assets 170,250 163,869    
On-balance sheet liabilities        
Long-term debt 278,710 280,117    
Total liabilities 2,971,606 2,899,429    
Consolidated VIEs        
On-balance sheet assets        
Trading account assets 2,160 5,004    
Total assets 17,643 21,370    
Loans and leases 15,946 17,135    
Allowance for loan and lease losses (880) (958)    
Other assets 417 189    
On-balance sheet liabilities        
Long-term debt 3,557 3,587    
All other liabilities 6 7    
Total liabilities 3,791 3,841    
Home equity | Unconsolidated VIEs        
Variable Interest Entity [Line Items]        
Maximum loss exposure 142 152    
On-balance sheet assets        
Total retained positions 1 1    
Total assets 398 430    
Home equity | Consolidated VIEs        
Variable Interest Entity [Line Items]        
Maximum loss exposure 41 45    
On-balance sheet assets        
Trading account assets 0 0    
Total assets 143 157    
Loans and leases 127 140    
Allowance for loan and lease losses 13 14    
Other assets 3 3    
On-balance sheet liabilities        
Short-term borrowings 0 0    
Long-term debt 103 113    
All other liabilities 0 0    
Total liabilities 103 113    
Home equity | Senior securities: | Unconsolidated VIEs        
On-balance sheet assets        
Trading account assets 0 0    
Debt securities carried at fair value 1 1    
Held-to-maturity securities 0 0    
Credit card | Unconsolidated VIEs        
Variable Interest Entity [Line Items]        
Maximum loss exposure 0 0    
On-balance sheet assets        
Total retained positions 0 0    
Total assets 0 0    
Credit card | Consolidated VIEs        
Variable Interest Entity [Line Items]        
Maximum loss exposure 9,809 10,279    
On-balance sheet assets        
Trading account assets 0 0    
Total assets 13,062 13,534    
Loans and leases 13,649 14,434    
Allowance for loan and lease losses (891) (970)    
Other assets 304 70    
On-balance sheet liabilities        
Short-term borrowings 0 0    
Long-term debt 3,248 3,248    
All other liabilities 5 7    
Total liabilities 3,253 3,255    
Residual interests 3,800 4,300    
Credit card | Senior securities: | Unconsolidated VIEs        
On-balance sheet assets        
Trading account assets 0 0    
Debt securities carried at fair value 0 0    
Held-to-maturity securities 0 0    
Resecuritization Trusts | Unconsolidated VIEs        
Variable Interest Entity [Line Items]        
Maximum loss exposure 5,467 6,089    
On-balance sheet assets        
Total retained positions 5,467 6,089    
Total assets 15,939 18,633    
Resecuritization Trusts | Consolidated VIEs        
Variable Interest Entity [Line Items]        
Maximum loss exposure 164 680    
On-balance sheet assets        
Trading account assets 171 686    
Total assets 171 686    
Loans and leases 0 0    
Allowance for loan and lease losses 0 0    
Other assets 0 0    
On-balance sheet liabilities        
Short-term borrowings 0 0    
Long-term debt 7 6    
All other liabilities 0 0    
Total liabilities 7 6    
Resecuritization Trusts | Senior securities: | Unconsolidated VIEs        
On-balance sheet assets        
Trading account assets 933 1,030    
Debt securities carried at fair value 1,622 1,903    
Held-to-maturity securities 2,912 3,156    
Municipal Bond Trusts | Unconsolidated VIEs        
Variable Interest Entity [Line Items]        
Maximum loss exposure 4,063 4,094    
On-balance sheet assets        
Total retained positions 0 0    
Total assets 4,616 4,655    
Municipal Bond Trusts | Consolidated VIEs        
Variable Interest Entity [Line Items]        
Maximum loss exposure 209 210    
On-balance sheet assets        
Trading account assets 121 122    
Total assets 209 210    
Loans and leases 0 0    
Allowance for loan and lease losses 0 0    
Other assets 88 88    
On-balance sheet liabilities        
Short-term borrowings 196 196    
Long-term debt 0 0    
All other liabilities 0 0    
Total liabilities 196 196    
Municipal Bond Trusts | Senior securities: | Unconsolidated VIEs        
On-balance sheet assets        
Trading account assets 0 0    
Debt securities carried at fair value 0 0    
Held-to-maturity securities $ 0 $ 0