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, 2023
Jun. 30, 2023
Dec. 31, 2022
Sep. 30, 2022
Jun. 30, 2022
Dec. 31, 2021
On-balance sheet assets            
Trading account assets $ 306,409   $ 296,108      
Debt securities carried at fair value 175,540   229,994      
Loans and leases 1,049,149   1,045,747      
Allowance for loan and lease losses (13,287) $ (12,950) (12,682) $ (12,302) $ (11,973) $ (12,387)
All other assets 152,732   150,759      
Total assets 3,153,090   3,051,375 $ 3,072,953    
On-balance sheet liabilities            
Long-term debt 290,359   275,982      
Total liabilities 2,866,026   2,778,178      
Consolidated VIEs            
On-balance sheet assets            
Trading account assets 4,654   2,816      
Loans and leases 16,902   16,738      
Allowance for loan and lease losses (809)   (797)      
All other assets 222   116      
Total assets 20,969   18,873      
On-balance sheet liabilities            
Long-term debt 6,566   4,581      
All other liabilities 12   12      
Total liabilities 8,637   4,635      
Other Variable Interest Entities | Consolidated VIEs            
Variable Interest Entity [Line Items]            
Maximum loss exposure 1,840   2,286      
On-balance sheet assets            
Trading account assets 378   353      
Debt securities carried at fair value 0   0      
Loans and leases 1,635   2,086      
Allowance for loan and lease losses (1)   (1)      
All other assets 60   46      
Total assets 2,072   2,484      
On-balance sheet liabilities            
Short-term borrowings 23   42      
Long-term debt 209   156      
All other liabilities 0   0      
Total liabilities 232   198      
Other Variable Interest Entities | Unconsolidated VIEs            
Variable Interest Entity [Line Items]            
Maximum loss exposure 47,375   47,477      
On-balance sheet assets            
Trading account assets 2,183   2,187      
Debt securities carried at fair value 125   473      
Loans and leases 14,447   14,243      
Allowance for loan and lease losses (71)   (99)      
All other assets 30,164   30,221      
Total assets 46,848   47,025      
On-balance sheet liabilities            
Short-term borrowings 0   0      
Long-term debt 0   0      
All other liabilities 7,104   7,318      
Total liabilities 7,104   7,318      
Other Variable Interest Entities | Variable Interest Entity            
Variable Interest Entity [Line Items]            
Maximum loss exposure 49,215   49,763      
On-balance sheet assets            
Trading account assets 2,561   2,540      
Debt securities carried at fair value 125   473      
Loans and leases 16,082   16,329      
Allowance for loan and lease losses (72)   (100)      
All other assets 30,224   30,267      
Total assets 48,920   49,509      
On-balance sheet liabilities            
Short-term borrowings 23   42      
Long-term debt 209   156      
All other liabilities 7,104   7,318      
Total liabilities $ 7,336   $ 7,516