Quarterly report pursuant to Section 13 or 15(d)

Securitizations and Other Variable Interest Entities - Other Asset-backed VIEs (Details)

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Securitizations and Other Variable Interest Entities - Other Asset-backed VIEs (Details) - USD ($)
$ in Millions
Mar. 31, 2024
Dec. 31, 2023
Mar. 31, 2023
Dec. 31, 2022
On-balance sheet assets        
Trading account assets $ 318,364 $ 277,354    
Debt securities carried at fair value 323,119 276,852    
Held-to-maturity securities 586,899 594,591    
Loans and leases 1,049,156 1,053,732    
Allowance for loan and lease losses (13,213) (13,342) $ (12,514) $ (12,682)
Other assets 160,323 160,875    
Total assets 3,273,803 3,180,151 $ 3,194,657  
On-balance sheet liabilities        
Long-term debt 296,346 302,204    
Total liabilities 2,980,251 2,888,505    
Consolidated VIEs        
On-balance sheet assets        
Trading account assets 5,838 6,054    
Loans and leases 19,250 18,276    
Allowance for loan and lease losses (920) (826)    
Other assets 256 269    
Total assets 24,424 23,773    
On-balance sheet liabilities        
Long-term debt 8,157 8,456    
All other liabilities 18 19    
Total liabilities 11,562 11,432    
Credit Card and Automobile | Unconsolidated VIEs        
Variable Interest Entity [Line Items]        
Maximum loss exposure 0 0    
On-balance sheet assets        
Loans and leases 0 0    
Allowance for loan and lease losses 0 0    
Other assets 0 0    
Total retained positions 0 0    
Total assets 0 0    
Credit Card and Automobile | Consolidated VIEs        
Variable Interest Entity [Line Items]        
Maximum loss exposure 9,662 8,127    
On-balance sheet assets        
Trading account assets 0 0    
Debt securities carried at fair value 0 0    
Loans and leases 18,002 16,640    
Allowance for loan and lease losses (926) (832)    
Other assets 175 163    
Total assets 17,251 15,971    
On-balance sheet liabilities        
Short-term borrowings 0 0    
Long-term debt 7,571 7,825    
All other liabilities 18 19    
Total liabilities 7,589 7,844    
Residual interests 4,800 3,200    
Credit Card and Automobile | 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 and Customer VIEs | Unconsolidated VIEs        
Variable Interest Entity [Line Items]        
Maximum loss exposure 4,254 4,494    
On-balance sheet assets        
Loans and leases 0 0    
Allowance for loan and lease losses 0 0    
Other assets 711 711    
Total retained positions 4,254 4,494    
Total assets 14,285 15,862    
Resecuritization Trusts and Customer VIEs | Consolidated VIEs        
Variable Interest Entity [Line Items]        
Maximum loss exposure 401 1,240    
On-balance sheet assets        
Trading account assets 922 1,798    
Debt securities carried at fair value 0 0    
Loans and leases 0 0    
Allowance for loan and lease losses 0 0    
Other assets 38 38    
Total assets 960 1,836    
On-balance sheet liabilities        
Short-term borrowings 0 0    
Long-term debt 559 596    
All other liabilities 0 0    
Total liabilities 559 596    
Resecuritization Trusts and Customer VIEs | Senior securities: | Unconsolidated VIEs        
On-balance sheet assets        
Trading account assets 484 626    
Debt securities carried at fair value 882 920    
Held-to-maturity securities 2,177 2,237    
Municipal Bond Trusts and CDOs | Unconsolidated VIEs        
Variable Interest Entity [Line Items]        
Maximum loss exposure 1,852 1,787    
On-balance sheet assets        
Loans and leases 0 0    
Allowance for loan and lease losses 0 0    
Other assets 6 7    
Total retained positions 35 30    
Total assets 8,615 9,279    
Municipal Bond Trusts and CDOs | Consolidated VIEs        
Variable Interest Entity [Line Items]        
Maximum loss exposure 3,575 3,136    
On-balance sheet assets        
Trading account assets 3,547 3,084    
Debt securities carried at fair value 28 52    
Loans and leases 0 0    
Allowance for loan and lease losses 0 0    
Other assets 0 0    
Total assets 3,575 3,136    
On-balance sheet liabilities        
Short-term borrowings 3,364 2,934    
Long-term debt 0 0    
All other liabilities 0 0    
Total liabilities 3,364 2,934    
Municipal Bond Trusts and CDOs | Senior securities: | Unconsolidated VIEs        
On-balance sheet assets        
Trading account assets 29 23    
Debt securities carried at fair value 0 0    
Held-to-maturity securities 0 0    
Investment VIEs and Leveraged Lease Trusts | Unconsolidated VIEs        
Variable Interest Entity [Line Items]        
Maximum loss exposure 2,092 2,197    
On-balance sheet assets        
Loans and leases 92 90    
Allowance for loan and lease losses (11) (12)    
Other assets 1,188 1,168    
Total retained positions 1,596 1,719    
Total assets 20,747 18,398    
Investment VIEs and Leveraged Lease Trusts | Consolidated VIEs        
Variable Interest Entity [Line Items]        
Maximum loss exposure 1,209 1,596    
On-balance sheet assets        
Trading account assets 2 1    
Debt securities carried at fair value 0 0    
Loans and leases 1,219 1,605    
Allowance for loan and lease losses (1) (1)    
Other assets 14 15    
Total assets 1,234 1,620    
On-balance sheet liabilities        
Short-term borrowings 23 23    
Long-term debt 2 1    
All other liabilities 0 0    
Total liabilities 25 24    
Investment VIEs and Leveraged Lease Trusts | Senior securities: | Unconsolidated VIEs        
On-balance sheet assets        
Trading account assets 322 469    
Debt securities carried at fair value 5 4    
Held-to-maturity securities $ 0 $ 0