Interest Expense - Schedule of Components of Interest Expense (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Debt securities: | ||
| Interest expense | $ 82.7 | $ 67.0 |
| Mortgage warehouse facilities | ||
| Debt securities: | ||
| Interest expense | 20.9 | 16.0 |
| MSR financing facilities | ||
| Debt securities: | ||
| Interest expense | 20.9 | 18.6 |
| Advance match funded liabilities | ||
| Debt securities: | ||
| Interest expense | 6.2 | 7.9 |
| Escrow | ||
| Debt securities: | ||
| Interest expense | 1.7 | 1.7 |
| Senior Notes Due 2029 | ||
| Debt securities: | ||
| Interest expense | 16.1 | 12.8 |
| Secured Debt | Securitization Notes | ||
| Debt securities: | ||
| Interest expense | $ 16.9 | $ 10.1 |