Sales of Receivables and Servicing Rights - Additional Information (Details) - USD ($) $ in Billions |
3 Months Ended | 12 Months Ended |
|---|---|---|
Mar. 31, 2026 |
Dec. 31, 2025 |
|
| Transfers and Servicing [Abstract] | ||
| Servicing of residential mortgage loans for other investors | $ 86.7 | $ 87.8 |
| Weighted-average coupon of the MSR portfolio (as a percent) | 3.88% | 3.86% |