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Investment in Equity Method Investee (Narrative) (Details) - USD ($) $ in Millions |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Nov. 27, 2024 | Nov. 06, 2024 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Nov. 01, 2022
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Aggregate UPB transferred |  |  | $ 0.0 | $ 6,800.0 | $ 7,200.0 |
Net proceeds from sale of investment in equity method investee |  |  | 46.3 | 0.0 | 0.0 |
Senior Notes |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Long-term debt, gross |  |  | 500.0 | 645.0 |  |
Senior notes |  |  | $ 487.4 | 595.8 |  |
2023 |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Redemption Price |  |  | 104.938% |  |  |
2024 |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Redemption Price |  |  | 102.469% |  |  |
2025 and thereafter |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Redemption Price |  |  | 100.00% |  |  |
PMC Senior Secured Notes Due 2026 |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Debt Instrument, Fee Amount |  | $ 5.0 |  |  |  |
Redemption Price |  | 101.969% |  |  |  |
Debt instrument stated percentage of interest (percentage) |  | 7.875% |  |  |  |
OFC Senior Secured Notes | 2023 |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Redemption Price |  |  | 100.00% |  |  |
OFC Senior Secured Notes | 2024 |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Redemption Price |  |  | 102.50% |  |  |
OFC Senior Secured Notes | 2025 and thereafter |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Debt Instrument, Additional Redemption Amount |  |  | $ 50.0 |  |  |
Senior Notes Due 2029 |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Debt instrument stated percentage of interest (percentage) |  | 9.875% |  |  |  |
Senior Notes Due 2029 | Senior Notes |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Long-term debt, gross |  | $ 500.0 | $ 500.0 | 0.0 |  |
Debt instrument stated percentage of interest (percentage) |  | 9.875% | 9.875% |  |  |
MAV Canopy HoldCo I LLC |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Investment in equity method investee |  |  |  |  |  | $ 250.0
Ownership percentage | 15.00% |  | 15.00% |  |  |
Net proceeds from sale of investment in equity method investee | $ 50.0 |  |  |  |  |
Equity Method Investment, Realized Gain (Loss) on Disposal | $ 13.7 |  |  |  |  |
Sale Of Equity Method Investment, Reduction In Lockout Restriction, Percentage |  |  | 25.00% |  |  |
Joint Marketing Agreement and Recapture Agreement |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
UPB of MSRs sold |  |  | $ 64.2 | 30.9 | 275.1 |
Oaktree | MAV Canopy HoldCo I LLC |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Ownership percentage |  |  | 85.00% |  |  |
Oaktree | MAV Canopy HoldCo I LLC | PHH Senior Notes |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Senior notes |  | $ 50.0 |  |  |  |
MAV Asset Vehicle LLC |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
UPB of MSRs sold |  |  |  | $ 2,300.0 |  |
UPB of loans serviced on behalf of NRZ |  |  | $ 5,500.0 |  | $ 2,900.0 |
MSR Asset Vehicle LLC |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
UIPB of loans subserviced |  |  | 41,200.0 |  |  |
MSR Asset Vehicle LLC | Mortgage Servicing Rights Title Transferred |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
UPB of loans serviced on behalf of NRZ |  |  | 21,500.0 |  |  |
Maximum |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Management fee expense |  |  | $ 0.4 |  |  |

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