Mortgage Servicing Rights - Additional Information (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
Dec. 31, 2025 |
|
| Transfers and Servicing [Abstract] | |||||
| Residential mortgage loans serviced for others including subserviced mortgages with no corresponding MSRs asset | $ 215,100 | $ 215,100 | $ 216,300 | ||
| Gain (loss) on fair value changes of MSRs due to changes in valuation assumptions and derivatives used to economically hedge MSRs | 2 | $ (4) | (25) | $ (2) | |
| Loan servicing and ancillary fees | $ 164 | $ 172 | $ 327 | $ 344 | |