Noninterest Revenue and Noninterest Expense - Principal Transactions (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Schedule of Noninterest revenue [Line Items] | ||||
| Total revenue by instrument type | $ 9,007 | $ 7,141 | $ 16,994 | $ 14,768 |
| Private equity gains/(losses) | 0 | 8 | 0 | (5) |
| Principal transactions | 9,007 | 7,149 | 16,994 | 14,763 |
| Interest rate | ||||
| Schedule of Noninterest revenue [Line Items] | ||||
| Total revenue by instrument type | 780 | 984 | 1,875 | 2,342 |
| Credit | ||||
| Schedule of Noninterest revenue [Line Items] | ||||
| Total revenue by instrument type | 247 | 199 | 799 | 437 |
| Foreign exchange | ||||
| Schedule of Noninterest revenue [Line Items] | ||||
| Total revenue by instrument type | 1,636 | 1,596 | 2,951 | 2,972 |
| Equity | ||||
| Schedule of Noninterest revenue [Line Items] | ||||
| Total revenue by instrument type | 5,984 | 3,836 | 10,043 | 8,010 |
| Commodity | ||||
| Schedule of Noninterest revenue [Line Items] | ||||
| Total revenue by instrument type | $ 360 | $ 526 | $ 1,326 | $ 1,007 |