v3.26.1
Business Segment Reporting - Schedule of Segment Reporting Information (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Results of Operations       
Servicing and subservicing fees $ 222.4 $ 203.3  
Gain on reverse loans and HMBS-related borrowings, net 18.7 23.8  
Gain on loans held for sale, net 34.1 11.8  
Other revenue, net 19.1 10.9  
Revenue 294.3 249.8  
MSR valuation adjustments, net (69.0) (38.9)  
Compensation and benefits 69.7 57.4  
Servicing and origination 18.5 13.0  
Technology and communications 17.5 15.0  
Professional services 14.8 22.6  
Occupancy, equipment and mailing 8.5 8.2  
Corporate Overhead Allocations 0.0 0.0  
Other expenses 3.1 3.6  
Total operating expenses 132.2 119.9  
Other income (expense):      
Interest income 41.0 26.2  
Interest expense (82.7) (67.0)  
Pledged MSR liability expense (42.6) (41.9)  
Other, net (0.9) 0.9  
Other income (expense), net (85.2) (81.9)  
Income before income taxes 7.9 9.1  
Total Assets      
Total Assets 17,735.2   $ 16,170.6
Operating Segments | Servicing      
Results of Operations       
Servicing and subservicing fees 222.4 203.3  
Gain on reverse loans and HMBS-related borrowings, net 14.2 16.9  
Gain on loans held for sale, net (2.7) (3.8)  
Other revenue, net 6.5 4.8  
Revenue 240.3 221.2  
MSR valuation adjustments, net (80.5) (41.9)  
Compensation and benefits 23.2 23.1  
Servicing and origination 15.2 11.7  
Technology and communications 8.3 7.4  
Professional services 7.3 6.3  
Occupancy, equipment and mailing 7.2 7.1  
Corporate Overhead Allocations 14.7 12.4  
Other expenses 0.2 0.5  
Total operating expenses 76.1 68.6  
Other income (expense):      
Interest income 18.0 11.8  
Interest expense (58.5) (47.9)  
Pledged MSR liability expense (42.6) (41.9)  
Other, net (0.6) 0.5  
Other income (expense), net (83.7) (77.5)  
Income before income taxes 0.0 33.1  
Total Assets      
Total Assets 15,175.1   14,683.5
Operating Segments | Originations      
Results of Operations       
Servicing and subservicing fees 0.0 0.0  
Gain on reverse loans and HMBS-related borrowings, net 4.5 6.9  
Gain on loans held for sale, net 36.9 15.6  
Other revenue, net 12.6 6.2  
Revenue 53.9 28.6  
MSR valuation adjustments, net 11.5 3.0  
Compensation and benefits 20.8 12.4  
Servicing and origination 3.3 1.1  
Technology and communications 2.8 2.1  
Professional services 0.6 0.5  
Occupancy, equipment and mailing 0.8 0.7  
Corporate Overhead Allocations 5.2 3.9  
Other expenses 1.5 1.5  
Total operating expenses 35.0 22.2  
Other income (expense):      
Interest income 21.8 13.3  
Interest expense (18.6) (12.7)  
Pledged MSR liability expense 0.0 0.0  
Other, net (0.4) (0.4)  
Other income (expense), net 2.8 0.2  
Income before income taxes 33.2 9.6  
Total Assets      
Total Assets 2,212.4   1,252.3
Operating Segments | Corporate      
Results of Operations       
Servicing and subservicing fees 0.0 0.0  
Gain on reverse loans and HMBS-related borrowings, net 0.0 0.0  
Gain on loans held for sale, net 0.0 0.0  
Other revenue, net 0.0 0.0  
Revenue 0.0 0.0  
MSR valuation adjustments, net 0.0 0.0  
Compensation and benefits 25.7 21.9  
Servicing and origination 0.0 0.2  
Technology and communications 6.4 5.5  
Professional services 6.9 15.9  
Occupancy, equipment and mailing 0.5 0.4  
Corporate Overhead Allocations (19.9) (16.4)  
Other expenses 1.4 1.6  
Total operating expenses 21.0 29.1  
Other income (expense):      
Interest income 1.2 1.1  
Interest expense (5.6) (6.4)  
Pledged MSR liability expense 0.0 0.0  
Other, net 0.1 0.8  
Other income (expense), net (4.3) (4.5)  
Income before income taxes (25.2) $ (33.6)  
Total Assets      
Total Assets $ 347.7   $ 234.8