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
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2019
On-balance sheet assets            
Trading account assets $ 291,733   $ 198,854      
Debt securities carried at fair value 288,913   246,601      
Loans and leases 918,928   927,861      
Allowance for loan and lease losses (14,095) $ (16,168) (18,802) $ (19,389) $ (15,766) $ (12,358)
Other assets 159,522   135,203      
Total assets 3,029,894   2,819,627 $ 2,741,688    
On-balance sheet liabilities            
Long-term debt 274,604   262,934      
Total liabilities 2,752,775   2,546,703      
Consolidated VIEs            
On-balance sheet assets            
Trading account assets 4,418   5,225      
Loans and leases 16,970   23,636      
Allowance for loan and lease losses (1,047)   (1,693)      
Other assets 1,134   1,387      
Total assets 21,475   28,555      
On-balance sheet liabilities            
Long-term debt 5,137   7,053      
All other liabilities 15   16      
Total liabilities 5,476   7,523      
Other Variable Interest Entities            
On-balance sheet liabilities            
Total assets of VIEs, Unconsolidated 83,221   77,984      
Total assets of VIEs 88,002   82,223      
Other Variable Interest Entities | Consolidated VIEs            
Variable Interest Entity [Line Items]            
Maximum loss exposure 4,565   4,106      
On-balance sheet assets            
Trading account assets 2,437   2,080      
Debt securities carried at fair value 0   0      
Loans and leases 2,319   2,108      
Allowance for loan and lease losses (3)   (3)      
Other assets 28   54      
Total assets 4,781   4,239      
On-balance sheet liabilities            
Short-term borrowings 37   22      
Long-term debt 179   111      
All other liabilities 0   0      
Total liabilities 216   133      
Other Variable Interest Entities | Unconsolidated VIEs            
Variable Interest Entity [Line Items]            
Maximum loss exposure 24,829   23,870      
On-balance sheet assets            
Trading account assets 606   623      
Debt securities carried at fair value 8   9      
Loans and leases 182   184      
Allowance for loan and lease losses (8)   (3)      
Other assets 23,541   22,553      
Total assets 24,329   23,366      
On-balance sheet liabilities            
Short-term borrowings 0   0      
Long-term debt 0   0      
All other liabilities 5,972   5,658      
Total liabilities 5,972   5,658      
Other Variable Interest Entities | Variable Interest Entity            
Variable Interest Entity [Line Items]            
Maximum loss exposure 29,394   27,976      
On-balance sheet assets            
Trading account assets 3,043   2,703      
Debt securities carried at fair value 8   9      
Loans and leases 2,501   2,292      
Allowance for loan and lease losses (11)   (6)      
Other assets 23,569   22,607      
Total assets 29,110   27,605      
On-balance sheet liabilities            
Short-term borrowings 37   22      
Long-term debt 179   111      
All other liabilities 5,972   5,658      
Total liabilities $ 6,188   $ 5,791