v3.26.1
Borrowings - Schedule of Mortgage Loan Warehouse and MSR Financing Facilities (Details) - USD ($)
$ in Millions
 1 Months Ended 6 Months Ended
Jul. 31, 2026
Jun. 30, 2026
May 31, 2026
Apr. 30, 2026
Mar. 31, 2026
Jan. 31, 2026
Dec. 31, 2025
Line of Credit Facility [Line Items]              
Percentage Of The Limited Liability Company Interest   100.00%          
Mortgage warehouse facilities              
Line of Credit Facility [Line Items]              
Weighted average interest rate   5.07%         5.24%
Prepaid lender fees, net   $ 0.7         $ 1.1
Secured Debt              
Line of Credit Facility [Line Items]              
Debt Instrument, Remaining Borrowing Capacity, Uncommited Amount   73.2          
Debt Instrument, Remaining Borrowing Capacity, Committed Amount   246.9          
Total Financing liabilities   $ 1,566.1         $ 1,285.2
Weighted average interest rate   6.47%         6.70%
Secured Debt | Securitization Notes              
Line of Credit Facility [Line Items]              
Total Financing liabilities   $ 2,041.4         $ 951.9
Unamortized debt issuance costs   (116.4)         (52.6)
Outstanding borrowings (MSR financing facilities, net)   1,925.0         899.3
MSR financing facilities              
Line of Credit Facility [Line Items]              
Available borrowing capacity   33.4          
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]              
Total Financing liabilities   $ 0.0         76.5
Interest rate (as a percent)   3.00%          
Debt instrument, face amount   $ 264.9          
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   236.6          
Total Financing liabilities   163.4         633.1
Maximum borrowing capacity   400.0   $ 400.0 $ 750.0    
Ginnie Mae Mortgage Servicing Rights Financing Facility | Secured Debt              
Line of Credit Facility [Line Items]              
Debt Instrument, Remaining Borrowing Capacity, Uncommited Amount   34.8          
Debt Instrument, Remaining Borrowing Capacity, Committed Amount   0.0          
Total Financing liabilities   465.2         371.4
Uncommitted available borrowing capacity   500.0   500.0   $ 450.0 400.0
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   16.2         18.5
Agency MSR Financing Facility Revolving Loan              
Line of Credit Facility [Line Items]              
Prepaid lender fees, net   4.0         1.5
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   10.3          
Total Financing liabilities   389.7         194.5
Maximum borrowing capacity   400.0 $ 400.0 $ 250.0      
OLIT Asset-Backed Notes, Series 2024-HB2 | Secured Debt | Securitization Notes              
Line of Credit Facility [Line Items]              
Total Financing liabilities   $ 172.3         193.8
Interest rate (as a percent)   5.00%          
Debt instrument, face amount   $ 330.6          
70 Million PLS MSR Financing Facility | Secured Debt              
Line of Credit Facility [Line Items]              
Debt Instrument, Remaining Borrowing Capacity, Uncommited Amount   2.9          
Debt Instrument, Remaining Borrowing Capacity, Committed Amount   0.0          
Total Financing liabilities   67.1         67.8
Uncommitted available borrowing capacity   $ 70.0          
OLIT 2023-HB1, OLIT 2024-HB1 and OLIT 2024-HB2 | Secured Debt              
Line of Credit Facility [Line Items]              
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]              
Total Financing liabilities   $ 164.1         194.7
Debt instrument, face amount   322.5          
OLIT Asset-Backed Notes, Series 2024-HB1 | Secured Debt | Securitization Notes              
Line of Credit Facility [Line Items]              
Total Financing liabilities   103.8         116.1
Debt instrument, face amount   268.6          
OLIT Asset-Backed Notes, Series 2025-HB2 | Secured Debt | Securitization Notes              
Line of Credit Facility [Line Items]              
Total Financing liabilities   299.6         370.8
Debt instrument, face amount   413.3          
Total Financing Agreements | Secured Debt              
Line of Credit Facility [Line Items]              
Available borrowing capacity   295.9          
Uncommitted available borrowing capacity   1,983.0          
Short-Term Debt   2,061.7         1,224.6
OLIT Asset-Backed Notes, Series 2026-HB1 | March 2039 | Secured Debt | Securitization Notes              
Line of Credit Facility [Line Items]              
Total Financing liabilities   398.9         0.0
Debt instrument, face amount   511.9          
OLIT Asset-Backed Notes, Series 2026-HB2 | Secured Debt | Securitization Notes              
Line of Credit Facility [Line Items]              
Total Financing liabilities   398.1         0.0
Debt instrument, face amount   499.9          
OLIT Asset-Backed Notes, Series 2026-HB3 | Secured Debt | Securitization Notes              
Line of Credit Facility [Line Items]              
Total Financing liabilities   504.6         0.0
Debt instrument, face amount   504.6          
$500 million Fannie Mae MSR financing facility | Secured Debt              
Line of Credit Facility [Line Items]              
Debt Instrument, Remaining Borrowing Capacity, Uncommited Amount   35.5          
Debt Instrument, Remaining Borrowing Capacity, Committed Amount   0.0          
Total Financing liabilities   464.5         $ 0.0
Maximum borrowing capacity   $ 500.0 $ 450.0        
$500 million Fannie Mae MSR financing facility | Secured Debt | Subsequent Event              
Line of Credit Facility [Line Items]              
Repayments of lines of credit $ 250.0            
Fannie Mae Mortgage Servicing Rights Term Loan Facility $250 Million | Secured Debt | Subsequent Event              
Line of Credit Facility [Line Items]              
Maximum borrowing capacity $ 250.0