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
Sep. 30, 2021
Jun. 30, 2021
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Dec. 31, 2019
On-balance sheet assets            
Trading account assets $ 288,566   $ 198,854      
Debt securities carried at fair value 285,377   246,601      
Loans and leases 927,736   927,861      
Allowance for loan and lease losses (13,155) $ (14,095) (18,802) $ (19,596) $ (19,389) $ (12,358)
Other assets 160,427   135,203      
Total assets 3,085,446   2,819,627 $ 2,738,452    
On-balance sheet liabilities            
Long-term debt 278,621   262,934      
Total liabilities 2,812,982   2,546,703      
Consolidated VIEs            
On-balance sheet assets            
Trading account assets 4,432   5,225      
Loans and leases 16,857   23,636      
Allowance for loan and lease losses (994)   (1,693)      
Other assets 136   1,387      
Total assets 20,431   28,555      
On-balance sheet liabilities            
Long-term debt 3,830   7,053      
All other liabilities 10   16      
Total liabilities 4,170   7,523      
Other Variable Interest Entities            
On-balance sheet liabilities            
Total assets of VIEs, Unconsolidated 86,035   77,984      
Total assets of VIEs 91,131   82,223      
Other Variable Interest Entities | Consolidated VIEs            
Variable Interest Entity [Line Items]            
Maximum loss exposure 4,831   4,106      
On-balance sheet assets            
Trading account assets 2,523   2,080      
Debt securities carried at fair value 0   0      
Loans and leases 2,550   2,108      
Allowance for loan and lease losses (3)   (3)      
Other assets 26   54      
Total assets 5,096   4,239      
On-balance sheet liabilities            
Short-term borrowings 50   22      
Long-term debt 215   111      
All other liabilities 0   0      
Total liabilities 265   133      
Other Variable Interest Entities | Unconsolidated VIEs            
Variable Interest Entity [Line Items]            
Maximum loss exposure 25,409   23,870      
On-balance sheet assets            
Trading account assets 577   623      
Debt securities carried at fair value 7   9      
Loans and leases 39   184      
Allowance for loan and lease losses (5)   (3)      
Other assets 24,302   22,553      
Total assets 24,920   23,366      
On-balance sheet liabilities            
Short-term borrowings 0   0      
Long-term debt 0   0      
All other liabilities 6,109   5,658      
Total liabilities 6,109   5,658      
Other Variable Interest Entities | Variable Interest Entity            
Variable Interest Entity [Line Items]            
Maximum loss exposure 30,240   27,976      
On-balance sheet assets            
Trading account assets 3,100   2,703      
Debt securities carried at fair value 7   9      
Loans and leases 2,589   2,292      
Allowance for loan and lease losses (8)   (6)      
Other assets 24,328   22,607      
Total assets 30,016   27,605      
On-balance sheet liabilities            
Short-term borrowings 50   22      
Long-term debt 215   111      
All other liabilities 6,109   5,658      
Total liabilities $ 6,374   $ 5,791