v3.26.3
Fair Value Option - Structured Note Products by Balance Sheet Classification and Risk Component (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total structured notes $ 202,716 $ 164,965
Interest rate    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total structured notes 107,949 81,855
Credit    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total structured notes 11,687 9,494
Foreign exchange    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total structured notes 4,207 3,671
Equity    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total structured notes 77,876 68,963
Commodity    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total structured notes 997 982
Long-term debt    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total structured notes 154,004 129,410
Long-term debt | Interest rate    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total structured notes 75,808 61,398
Long-term debt | Credit    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total structured notes 10,224 8,677
Long-term debt | Foreign exchange    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total structured notes 2,956 2,617
Long-term debt | Equity    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total structured notes 64,156 55,890
Long-term debt | Commodity    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total structured notes 860 828
Short-term borrowings    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total structured notes 14,995 14,828
Short-term borrowings | Interest rate    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total structured notes 2,244 3,273
Short-term borrowings | Credit    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total structured notes 1,463 817
Short-term borrowings | Foreign exchange    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total structured notes 920 606
Short-term borrowings | Equity    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total structured notes 10,231 9,978
Short-term borrowings | Commodity    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total structured notes 137 154
Deposits    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total structured notes 33,717 20,727
Deposits | Interest rate    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total structured notes 29,897 17,184
Deposits | Credit    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total structured notes 0 0
Deposits | Foreign exchange    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total structured notes 331 448
Deposits | Equity    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total structured notes 3,489 3,095
Deposits | Commodity    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total structured notes 0 0
Excluded amount of deposits linked to precious metals for which fair value option was not elected $ 3,300 $ 2,800