Fair Value Measurements - Total Gains and Losses Included in Earnings for Assets and Liabilities Measured at Fair Value on a Recurring Basis Using Significant Unobservable Inputs (Details) - Level 3 - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis | ||||
| Gains and losses included in earnings | $ (38) | $ (42) | $ (89) | $ (44) |
| Mortgage banking net revenue | ||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis | ||||
| Gains and losses included in earnings | (38) | (20) | (71) | (5) |
| Capital markets fees | ||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis | ||||
| Gains and losses included in earnings | 1 | 1 | 1 | 1 |
| Other noninterest income | ||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis | ||||
| Gains and losses included in earnings | $ (1) | $ (23) | $ (19) | $ (40) |