Noninterest Revenue and Noninterest Expense - Asset Management 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] | ||||
| Investment management fees | $ 5,790 | $ 5,015 | $ 16,745 | $ 14,326 |
| All other asset management fees | 107 | 105 | 325 | 300 |
| Total asset management fees | $ 5,897 | $ 5,120 | $ 17,070 | $ 14,626 |