Annual report pursuant to Section 13 and 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
Dec. 31, 2020
Dec. 31, 2019
Jan. 01, 2019
Dec. 31, 2018
Jan. 01, 2018
On-balance sheet assets          
Trading account assets $ 198,854 $ 229,826      
Debt securities carried at fair value 246,601 256,467      
Loans and leases 927,861 983,426      
Allowance for loan and lease losses (1) (18,802) (9,416) $ (9,601) $ (9,601) $ (10,393)
Other assets 135,203 129,690      
Total assets 2,819,627 2,434,079      
On-balance sheet liabilities          
Long-term debt 262,934 240,856      
Total (1) 2,546,703 2,169,269      
Consolidated VIEs          
On-balance sheet assets          
Trading account assets 5,225 5,811      
Loans and leases 23,636 38,837      
Allowance for loan and lease losses (1) (1,693) (807)      
Other assets 1,387 540      
Total assets 28,555 44,381      
On-balance sheet liabilities          
Long-term debt 7,053 8,718      
All other liabilities (1) 16 22      
Total (1) 7,523 10,915      
Other Variable Interest Entities          
On-balance sheet liabilities          
Total assets of VIEs, Unconsolidated 77,984 70,120      
Total assets of VIEs 82,223 74,222      
Other Variable Interest Entities | Consolidated VIEs          
Variable Interest Entity [Line Items]          
Maximum loss exposure 4,106 4,055      
On-balance sheet assets          
Trading account assets 2,080 2,213      
Debt securities carried at fair value 0 0      
Loans and leases 2,108 1,810      
Allowance for loan and lease losses (1) (3) (2)      
Other assets 54 81      
Total assets 4,239 4,102      
On-balance sheet liabilities          
Short-term borrowings 22 0      
Long-term debt 111 46      
All other liabilities (1) 0 2      
Total (1) 133 48      
Other Variable Interest Entities | Unconsolidated VIEs          
Variable Interest Entity [Line Items]          
Maximum loss exposure 23,870 21,069      
On-balance sheet assets          
Trading account assets 623 549      
Debt securities carried at fair value 9 10      
Loans and leases 184 533      
Allowance for loan and lease losses (1) (3) 0      
Other assets 22,553 19,354      
Total assets 23,366 20,446      
On-balance sheet liabilities          
Short-term borrowings 0 0      
Long-term debt 0 0      
All other liabilities (1) 5,658 4,896      
Total (1) 5,658 4,896      
Other Variable Interest Entities | Variable Interest Entity          
Variable Interest Entity [Line Items]          
Maximum loss exposure 27,976 25,124      
On-balance sheet assets          
Trading account assets 2,703 2,762      
Debt securities carried at fair value 9 10      
Loans and leases 2,292 2,343      
Allowance for loan and lease losses (1) (6) (2)      
Other assets 22,607 19,435      
Total assets 27,605 24,548      
On-balance sheet liabilities          
Short-term borrowings 22 0      
Long-term debt 111 46      
All other liabilities (1) 5,658 4,898      
Total (1) $ 5,791 $ 4,944