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Interest Expense - Schedule of Components of Interest Expense (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Debt securities: |  |
Interest expense | $ 67.0 | $ 67.4
Amortization of Debt Issuance Costs and Discounts | 5.7 | 8.1
OFC Senior Secured Notes |  |
Debt securities: |  |
Interest expense | 0.0 | 11.2
Amortization of Debt Issuance Costs and Discounts | 0.0 | 2.7
Senior Notes |  |
Debt securities: |  |
Interest expense | 0.0 | 7.4
MSR financing facilities |  |
Debt securities: |  |
Interest expense | 18.6 | 17.9
Mortgage loan financing facilities |  |
Debt securities: |  |
Interest expense | 26.1 | 18.7
Advance match funded liabilities |  |
Debt securities: |  |
Interest expense | 7.9 | 10.4
Escrow |  |
Debt securities: |  |
Interest expense | 1.7 | 1.8
Senior Notes Due 2029 |  |
Debt securities: |  |
Interest expense | $ 12.8 | $ 0.0

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