Noninterest Revenue and Noninterest Expense - Commissions and Other Fees (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Noninterest Income (Expense) [Abstract] | ||||
| Brokerage commissions and fees | $ 948 | $ 788 | $ 1,848 | $ 1,551 |
| Administration fees | 675 | 608 | 1,324 | 1,214 |
| All other commissions and fees | 571 | 528 | 1,055 | 964 |
| Total commissions and other fees | $ 2,194 | $ 1,924 | $ 4,227 | $ 3,729 |