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Borrowings - Schedule of Mortgage Loan Warehouse and MSR Financing Facilities (Details) - USD ($) $ in Millions | 9 Months Ended |  |  |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2025 | Jul. 31, 2025 | Jun. 30, 2025 | Jun. 29, 2025 | May 31, 2025 | Feb. 28, 2025 | Feb. 25, 2025 | Jan. 31, 2025 | Dec. 31, 2024 | Sep. 13, 2024 | Feb. 29, 2024 | Jun. 15, 2023
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Unamortized debt issuance costs | $ (34.1) |  |  |  |  |  |  |  | $ (35.4) |  |  |
Maximum borrowing capacity |  |  |  |  | $ 350.0 |  |  |  |  |  |  |
Percentage Of The Limited Liability Company Interest | 100.00% |  |  |  |  | 100.00% |  |  |  |  |  |
Mortgage loan financing facilities |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Weighted average interest rate | 5.15% |  |  |  |  |  |  |  | 5.46% |  |  |
Prepaid lender fees, net | $ 1.1 |  |  |  |  |  |  |  | $ 1.0 |  |  |
Secured Debt |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Remaining Borrowing Capacity, Uncommited Amount | 111.8 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Remaining Borrowing Capacity, Committed Amount | 154.7 |  |  |  |  |  |  |  |  |  |  |
Total Financing liabilities | 1,223.2 |  |  |  |  |  |  |  | 958.0 |  |  |
Unamortized debt issuance costs | 0.0 |  |  |  |  |  |  |  | (0.1) |  |  |
Outstanding borrowings (MSR financing facilities, net) | $ 1,223.2 |  |  |  |  |  |  |  | $ 957.9 |  |  |
Weighted average interest rate | 7.12% |  |  |  |  |  |  |  | 7.18% |  |  |
Secured Debt | Financing Agreements |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Remaining Borrowing Capacity, Uncommited Amount | $ 1,416.4 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Remaining Borrowing Capacity, Committed Amount | 137.8 |  |  |  |  |  |  |  |  |  |  |
Total Financing liabilities | $ 1,448.4 |  |  |  |  |  |  |  | $ 1,046.3 |  |  |
Warehouse Facilities, Maximum Term | 364 days |  |  |  |  |  |  |  |  |  |  |
Secured Debt | Securitization Notes |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Remaining Borrowing Capacity, Uncommited Amount | $ 0.0 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Remaining Borrowing Capacity, Committed Amount | 0.0 |  |  |  |  |  |  |  |  |  |  |
Total Financing liabilities | 648.0 |  |  |  |  |  |  |  | 517.3 |  |  |
Secured Debt | Mortgage loan financing facilities |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Remaining Borrowing Capacity, Uncommited Amount | 1,416.4 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Remaining Borrowing Capacity, Committed Amount | 137.8 |  |  |  |  |  |  |  |  |  |  |
Total Financing liabilities | 2,096.4 |  |  |  |  |  |  |  | 1,563.6 |  |  |
Outstanding borrowings (MSR financing facilities, net) | 2,062.3 |  |  |  |  |  |  |  | 1,528.2 |  |  |
MSR financing facilities |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Available borrowing capacity | 23.4 |  |  |  |  |  |  |  |  |  |  |
Mortgage Warehouse Agreement |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Available borrowing capacity | 0.0 |  |  |  |  |  |  |  |  |  |  |
OLIT 2023 Notes | Secured Debt | Securitization Notes |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Remaining Borrowing Capacity, Uncommited Amount | 0.0 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Remaining Borrowing Capacity, Committed Amount | 0.0 |  |  |  |  |  |  |  |  |  |  |
OLIT Notes FY 2022 | Secured Debt | Securitization Notes |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Total Financing liabilities | 85.8 |  |  |  |  |  |  |  | 107.3 |  |  |
OLIT Asset-Backed Notes, Series 2024-HBI | Secured Debt | Securitization Notes |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Remaining Borrowing Capacity, Uncommited Amount | 0.0 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Remaining Borrowing Capacity, Committed Amount | 0.0 |  |  |  |  |  |  |  |  |  |  |
Total Financing liabilities | 123.2 |  |  |  |  |  |  |  | 160.9 |  |  |
Agency Mortgage Servicing Rights Financing Facility | Secured Debt |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Remaining Borrowing Capacity, Uncommited Amount | 0.0 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Remaining Borrowing Capacity, Committed Amount | 145.0 |  |  |  |  |  |  |  |  |  |  |
Total Financing liabilities | 605.0 |  |  |  |  |  |  |  | 415.1 |  |  |
Maximum borrowing capacity |  |  | $ 750.0 |  | $ 650.0 |  |  |  |  |  |  |
Ginnie Mae Mortgage Servicing Rights Financing Facility | Secured Debt |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Remaining Borrowing Capacity, Uncommited Amount | 103.8 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Remaining Borrowing Capacity, Committed Amount | 0.0 |  |  |  |  |  |  |  |  |  |  |
Total Financing liabilities | 296.2 |  |  |  |  |  |  |  | 244.7 |  |  |
Uncommitted available borrowing capacity | 400.0 |  |  | $ 300.0 |  |  |  |  |  |  |  |
Ocwen Excess Spread-Collateralized Notes, Series 2019/2022-PLS1 Class A | Secured Debt |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Remaining Borrowing Capacity, Uncommited Amount | 0.0 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Remaining Borrowing Capacity, Committed Amount | 0.0 |  |  |  |  |  |  |  |  |  |  |
Total Financing liabilities | $ 0.0 |  |  |  |  |  |  |  | 25.6 |  |  |
Interest rate (as a percent) | 5.114% |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount | $ 75.0 |  |  |  |  |  |  |  |  |  |  |
OASIS Series 2014-1 | Secured Debt |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Remaining Borrowing Capacity, Uncommited Amount | 0.0 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Remaining Borrowing Capacity, Committed Amount | 0.0 |  |  |  |  |  |  |  |  |  |  |
Total Financing liabilities | 19.7 |  |  |  |  |  |  |  | 23.1 |  |  |
Agency MSR Financing Facility Revolving Loan |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Prepaid lender fees, net | 3.1 |  |  |  |  |  |  |  | 2.1 |  |  |
Agency MSR Financing Facility Revolving Loan | Secured Debt |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Remaining Borrowing Capacity, Uncommited Amount | 0.0 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Remaining Borrowing Capacity, Committed Amount | 9.7 |  |  |  |  |  |  |  |  |  |  |
Total Financing liabilities | 240.3 |  |  |  |  |  |  |  | 249.5 |  |  |
Maximum borrowing capacity |  |  |  |  |  | $ 400.0 |  | $ 250.0 |  |  |  |
OLIT Asset-Backed Notes, Series 2024-HB2 | Secured Debt | Securitization Notes |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Remaining Borrowing Capacity, Uncommited Amount | 0.0 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Remaining Borrowing Capacity, Committed Amount | 0.0 |  |  |  |  |  |  |  |  |  |  |
Total Financing liabilities | 206.9 |  |  |  |  |  |  |  | 249.1 |  |  |
70 Million PLS MSR Financing Facility | Secured Debt |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Remaining Borrowing Capacity, Uncommited Amount | 8.0 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Remaining Borrowing Capacity, Committed Amount | 0.0 |  |  |  |  |  |  |  |  |  |  |
Total Financing liabilities | 62.0 |  |  |  |  |  |  |  | 0.0 |  |  |
Debt instrument, face amount | $ 70.0 |  |  |  |  |  |  |  |  |  |  |
Uncommitted available borrowing capacity |  |  |  |  |  |  | $ 70.0 |  |  |  |  |
OLIT 2023-HB1, OLIT 2024-HB1 and OLIT 2024-HB2 | Secured Debt |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Total Financing liabilities |  | $ 322.5 |  |  |  |  |  |  |  | $ 330.6 | $ 268.6 | $ 264.9
Interest rate (as a percent) |  | 3.00% |  |  |  |  |  |  |  | 5.00% | 3.00% | 3.00%
Debt Instrument, Mandatory Call Period | 3 years |  |  |  |  |  |  |  |  |  |  |
Debt Instruent, Redemption Percentage Of Premium | 1.00% |  |  |  |  |  |  |  |  |  |  |
OLIT Asset-Backed Notes, Series 2025-HB1 | Secured Debt | Securitization Notes |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Remaining Borrowing Capacity, Uncommited Amount | $ 0.0 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Remaining Borrowing Capacity, Committed Amount | 0.0 |  |  |  |  |  |  |  |  |  |  |
Total Financing liabilities | $ 232.0 |  |  |  |  |  |  |  | $ 0.0 |  |  |

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