Noninterest Revenue and Noninterest Expense - Noninterest Expense (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] | ||||
| Legal expense | $ 63 | $ 62 | $ 402 | $ 301 |
| FDIC-related expense | 371 | 258 | 1,053 | 549 |
| Operating losses | $ 284 | $ 301 | $ 850 | 1,001 |
| FDIC special assessment release | $ 437 | |||