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
Jun. 30, 2024
Mar. 31, 2024
Dec. 31, 2023
Jun. 30, 2023
Mar. 31, 2023
Dec. 31, 2022
On-balance sheet assets            
Trading account assets $ 306,466   $ 277,354      
Debt securities carried at fair value 301,051   276,852      
Held-to-maturity securities 577,402   594,591      
Loans and leases 1,056,785   1,053,732      
Allowance for loan and lease losses (13,238) $ (13,213) (13,342) $ (12,950) $ (12,514) $ (12,682)
Other assets 157,898   160,875      
Total assets 3,257,996   3,180,151 $ 3,123,198    
On-balance sheet liabilities            
Long-term debt 290,474   302,204      
Total liabilities 2,964,104   2,888,505      
Consolidated VIEs            
On-balance sheet assets            
Trading account assets 5,647   6,054      
Loans and leases 19,827   18,276      
Allowance for loan and lease losses (917)   (826)      
Other assets 281   269      
Total assets 24,838   23,773      
On-balance sheet liabilities            
Long-term debt 9,137   8,456      
All other liabilities 22   19      
Total liabilities 12,502   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 9,433   8,127      
On-balance sheet assets            
Trading account assets 0   0      
Debt securities carried at fair value 0   0      
Loans and leases 18,729   16,640      
Allowance for loan and lease losses (922)   (832)      
Other assets 200   163      
Total assets 18,007   15,971      
On-balance sheet liabilities            
Short-term borrowings 0   0      
Long-term debt 8,552   7,825      
All other liabilities 22   19      
Total liabilities 8,574   7,844      
Residual interests 4,400   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 5,037   4,494      
On-balance sheet assets            
Loans and leases 0   0      
Allowance for loan and lease losses 0   0      
Other assets 774   711      
Total retained positions 5,037   4,494      
Total assets 16,727   15,862      
Resecuritization Trusts and Customer VIEs | Consolidated VIEs            
Variable Interest Entity [Line Items]            
Maximum loss exposure 497   1,240      
On-balance sheet assets            
Trading account assets 1,018   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 39   38      
Total assets 1,057   1,836      
On-balance sheet liabilities            
Short-term borrowings 0   0      
Long-term debt 560   596      
All other liabilities 0   0      
Total liabilities 560   596      
Resecuritization Trusts and Customer VIEs | Senior securities: | Unconsolidated VIEs            
On-balance sheet assets            
Trading account assets 1,301   626      
Debt securities carried at fair value 852   920      
Held-to-maturity securities 2,110   2,237      
Municipal Bond Trusts and CDOs | Unconsolidated VIEs            
Variable Interest Entity [Line Items]            
Maximum loss exposure 1,874   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 31   30      
Total assets 7,531   9,279      
Municipal Bond Trusts and CDOs | Consolidated VIEs            
Variable Interest Entity [Line Items]            
Maximum loss exposure 3,539   3,136      
On-balance sheet assets            
Trading account assets 3,512   3,084      
Debt securities carried at fair value 27   52      
Loans and leases 0   0      
Allowance for loan and lease losses 0   0      
Other assets 0   0      
Total assets 3,539   3,136      
On-balance sheet liabilities            
Short-term borrowings 3,343   2,934      
Long-term debt 0   0      
All other liabilities 0   0      
Total liabilities 3,343   2,934      
Municipal Bond Trusts and CDOs | Senior securities: | Unconsolidated VIEs            
On-balance sheet assets            
Trading account assets 25   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 2,160   2,197      
On-balance sheet assets            
Loans and leases 68   90      
Allowance for loan and lease losses (4)   (12)      
Other assets 1,299   1,168      
Total retained positions 1,665   1,719      
Total assets 20,708   18,398      
Investment VIEs and Leveraged Lease Trusts | Consolidated VIEs            
Variable Interest Entity [Line Items]            
Maximum loss exposure 1,084   1,596      
On-balance sheet assets            
Trading account assets 2   1      
Debt securities carried at fair value 0   0      
Loans and leases 1,071   1,605      
Allowance for loan and lease losses (1)   (1)      
Other assets 14   15      
Total assets 1,086   1,620      
On-balance sheet liabilities            
Short-term borrowings 0   23      
Long-term debt 2   1      
All other liabilities 0   0      
Total liabilities 2   24      
Investment VIEs and Leveraged Lease Trusts | Senior securities: | Unconsolidated VIEs            
On-balance sheet assets            
Trading account assets 298   469      
Debt securities carried at fair value 4   4      
Held-to-maturity securities $ 0   $ 0