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, 2023
Dec. 31, 2022
Mar. 31, 2022
Dec. 31, 2021
On-balance sheet assets        
Trading account assets $ 314,978 $ 296,108    
Debt securities carried at fair value 172,510 229,994    
Held-to-maturity securities 624,528 632,863    
Total assets 3,194,657 3,051,375 $ 3,238,223  
Loans and leases 1,046,406 1,045,747    
Allowance for loan and lease losses (12,514) (12,682) $ (12,104) $ (12,387)
Other assets 154,461 150,759    
On-balance sheet liabilities        
Long-term debt 283,873 275,982    
Total liabilities 2,914,461 2,778,178    
Consolidated VIEs        
On-balance sheet assets        
Trading account assets 4,276 2,816    
Total assets 19,362 18,873    
Loans and leases 15,754 16,738    
Allowance for loan and lease losses (797) (797)    
Other assets 129 116    
On-balance sheet liabilities        
Long-term debt 4,883 4,581    
All other liabilities 7 12    
Total liabilities 6,229 4,635    
Home equity | Unconsolidated VIEs        
Variable Interest Entity [Line Items]        
Maximum loss exposure 8 119    
On-balance sheet assets        
Total retained positions 0 1    
Total assets 301 326    
Home equity | Consolidated VIEs        
Variable Interest Entity [Line Items]        
Maximum loss exposure 29 32    
On-balance sheet assets        
Trading account assets 0 0    
Total assets 112 111    
Loans and leases 99 97    
Allowance for loan and lease losses 11 12    
Other assets 2 2    
On-balance sheet liabilities        
Short-term borrowings 0 0    
Long-term debt 83 79    
All other liabilities 0 0    
Total liabilities 83 79    
Home equity | Senior securities: | Unconsolidated VIEs        
On-balance sheet assets        
Trading account assets 0 0    
Debt securities carried at fair value 0 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 8,994 9,555    
On-balance sheet assets        
Trading account assets 0 0    
Total assets 13,249 13,815    
Loans and leases 13,989 14,555    
Allowance for loan and lease losses (807) (808)    
Other assets 67 68    
On-balance sheet liabilities        
Short-term borrowings 0 0    
Long-term debt 4,248 4,247    
All other liabilities 7 13    
Total liabilities 4,255 4,260    
Residual interests 4,700 3,300    
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 4,473 4,243    
On-balance sheet assets        
Total retained positions 4,473 4,243    
Total assets 13,802 12,255    
Resecuritization Trusts | Consolidated VIEs        
Variable Interest Entity [Line Items]        
Maximum loss exposure 277 551    
On-balance sheet assets        
Trading account assets 656 650    
Total assets 656 650    
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 379 99    
All other liabilities 0 0    
Total liabilities 379 99    
Resecuritization Trusts | Senior securities: | Unconsolidated VIEs        
On-balance sheet assets        
Trading account assets 910 456    
Debt securities carried at fair value 1,105 1,259    
Held-to-maturity securities 2,458 2,528    
Municipal Bond Trusts | Unconsolidated VIEs        
Variable Interest Entity [Line Items]        
Maximum loss exposure 2,530 2,537    
On-balance sheet assets        
Total retained positions 0 0    
Total assets 3,032 3,016    
Municipal Bond Trusts | Consolidated VIEs        
Variable Interest Entity [Line Items]        
Maximum loss exposure 1,390 0    
On-balance sheet assets        
Trading account assets 1,390 0    
Total assets 1,390 0    
Loans and leases 0 0    
Allowance for loan and lease losses 0 0    
Other assets 0 0    
On-balance sheet liabilities        
Short-term borrowings 1,317 0    
Long-term debt 0 0    
All other liabilities 0 0    
Total liabilities 1,317 0    
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