Noninterest Revenue and Noninterest Expense - Commissions and Other Fees (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Noninterest Income (Expense) [Abstract] | ||||
| Brokerage commissions | $ 1,168 | $ 917 | $ 3,516 | $ 2,765 |
| Administration fees | 799 | 713 | 2,344 | 2,037 |
| All other commissions and fees | 617 | 574 | 1,820 | 1,629 |
| Total commissions and other fees | $ 2,584 | $ 2,204 | $ 7,680 | $ 6,431 |