Quarterly report pursuant to Section 13 or 15(d)

Securitizations and Other Variable Interest Entities - Other Variable Interest Entities (Details)

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Securitizations and Other Variable Interest Entities - Other Variable Interest Entities (Details) - USD ($)
$ in Millions
Mar. 31, 2021
Dec. 31, 2020
Mar. 31, 2020
Dec. 31, 2019
On-balance sheet assets        
Trading account assets $ 276,881 $ 198,854    
Debt securities carried at fair value 280,912 246,601    
Loans and leases 903,088 927,861    
Allowance for loan and lease losses (16,168) (18,802) $ (15,766) $ (12,358)
Other assets 156,221 135,203    
Total assets 2,969,992 2,819,627 $ 2,619,954  
On-balance sheet liabilities        
Long-term debt 251,211 262,934    
Total liabilities 2,695,992 2,546,703    
Consolidated VIEs        
On-balance sheet assets        
Trading account assets 4,530 5,225    
Loans and leases 19,346 23,636    
Allowance for loan and lease losses (1,261) (1,693)    
Other assets 1,387 1,387    
Total assets 24,002 28,555    
On-balance sheet liabilities        
Long-term debt 5,286 7,053    
All other liabilities 11 16    
Total liabilities 5,635 7,523    
Other Variable Interest Entities        
On-balance sheet liabilities        
Total assets of VIEs, Unconsolidated 80,929 77,984    
Total assets of VIEs 85,585 82,223    
Other Variable Interest Entities | Consolidated VIEs        
Variable Interest Entity [Line Items]        
Maximum loss exposure 4,483 4,106    
On-balance sheet assets        
Trading account assets 2,265 2,080    
Debt securities carried at fair value 0 0    
Loans and leases 2,347 2,108    
Allowance for loan and lease losses (3) (3)    
Other assets 47 54    
Total assets 4,656 4,239    
On-balance sheet liabilities        
Short-term borrowings 37 22    
Long-term debt 136 111    
All other liabilities 0 0    
Total liabilities 173 133    
Other Variable Interest Entities | Unconsolidated VIEs        
Variable Interest Entity [Line Items]        
Maximum loss exposure 24,276 23,870    
On-balance sheet assets        
Trading account assets 611 623    
Debt securities carried at fair value 9 9    
Loans and leases 225 184    
Allowance for loan and lease losses (10) (3)    
Other assets 22,948 22,553    
Total assets 23,783 23,366    
On-balance sheet liabilities        
Short-term borrowings 0 0    
Long-term debt 0 0    
All other liabilities 5,616 5,658    
Total liabilities 5,616 5,658    
Other Variable Interest Entities | Variable Interest Entity        
Variable Interest Entity [Line Items]        
Maximum loss exposure 28,759 27,976    
On-balance sheet assets        
Trading account assets 2,876 2,703    
Debt securities carried at fair value 9 9    
Loans and leases 2,572 2,292    
Allowance for loan and lease losses (13) (6)    
Other assets 22,995 22,607    
Total assets 28,439 27,605    
On-balance sheet liabilities        
Short-term borrowings 37 22    
Long-term debt 136 111    
All other liabilities 5,616 5,658    
Total liabilities $ 5,789 $ 5,791