Noninterest Revenue and Noninterest Expense - Commissions and Other Fees (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Noninterest Income (Expense) [Abstract] | ||||
| Brokerage commissions | $ 1,153 | $ 948 | $ 2,348 | $ 1,848 |
| Administration fees | 787 | 675 | 1,545 | 1,324 |
| All other commissions and fees | 674 | 571 | 1,203 | 1,055 |
| Total commissions and other fees | $ 2,614 | $ 2,194 | $ 5,096 | $ 4,227 |