v3.25.1
Fair Value - Schedule of Fair Value Assets and Liabilities (Details) - USD ($)
$ in Millions
Mar. 31, 2025
Dec. 31, 2024
Mar. 31, 2024
Dec. 31, 2023
Loans held for sale, at fair value (a) (d)        
Loans held for sale, at fair value $ 1,402.2 $ 1,290.2 $ 1,025.7 $ 674.2
Financial liabilities        
Advance match funded liabilities 377.5 417.1    
Financing liabilities, at fair value:        
HMBS-related borrowings 10,587.6 10,872.1 7,945.0 7,797.3
Other financing liabilities, at fair value 835.5 846.9    
Other secured borrowings:        
Mortgage loan financing facilities, net ($452.5 and $481.9 related to VIEs) 1,577.4 1,528.2    
MSR financing facilities 1,136.0 957.9    
Senior notes        
Senior notes (b) (c) 488.0 487.4    
Mortgage servicing rights        
MSRs 2,547.4 2,466.3   2,272.2
Carrying Value        
Loans held for sale, at fair value (a) (d)        
Loans held for sale, at fair value 1,402.2 1,290.2    
Financing liabilities, at fair value:        
Other financing liabilities, at fair value 835.5 846.9    
Fair Value        
Loans held for sale, at fair value (a) (d)        
Loans held for sale, at fair value 1,402.2 1,290.2    
Financing liabilities, at fair value:        
Other financing liabilities, at fair value 835.5 846.9    
Financing Liability Excess Servicing Spread [Member]        
Financing liabilities, at fair value:        
Other financing liabilities, at fair value 256.4 263.3    
Level 3 | Carrying Value        
Loans held for sale, at fair value (a) (d)        
Loans held for investment, at fair value (a) 10,812.5 11,125.3    
Advances, net 514.0 577.2    
Receivables, net 222.3 176.4    
Financial liabilities        
Advance match funded liabilities 377.5 417.1    
Financing liabilities, at fair value:        
HMBS-related borrowings 10,587.6 10,872.1    
Other secured borrowings:        
Mortgage loan financing facilities, net ($452.5 and $481.9 related to VIEs) 1,577.4 1,528.2    
MSR financing facilities 1,136.0 957.9    
Mortgage servicing rights        
MSRs 2,547.4 2,466.3    
Level 3 | Fair Value        
Loans held for sale, at fair value (a) (d)        
Loans held for investment, at fair value (a) 10,812.5 11,125.3    
Advances, net 514.0 577.2    
Receivables, net 222.3 176.4    
Financial liabilities        
Advance match funded liabilities 377.5 417.1    
Financing liabilities, at fair value:        
HMBS-related borrowings 10,587.6 10,872.1    
Other secured borrowings:        
Mortgage loan financing facilities, net ($452.5 and $481.9 related to VIEs) 1,584.6 1,535.3    
MSR financing facilities 1,126.7 947.6    
Mortgage servicing rights        
MSRs 2,547.4 2,466.3    
Level 3 | Interest Rate Contract | Carrying Value        
Derivative financial instrument assets (liabilities), net        
Interest rate lock commitments 9.4 (0.5)    
Level 3 | Interest Rate Contract | Fair Value        
Derivative financial instrument assets (liabilities), net        
Interest rate lock commitments 9.4 (0.5)    
Level 3 | Loans Held for Sale - Fair Value        
Mortgage servicing rights        
Loans related to Ginnie Mae guaranteed securitizations 496.6 472.9 $ 284.0 $ 203.1
Level 2 | Carrying Value        
Senior notes        
Senior notes (b) (c) 488.0 487.4    
Level 2 | Fair Value        
Senior notes        
Senior notes (b) (c) 480.0 495.0    
Level 1 | Other | Carrying Value        
Derivative financial instrument assets (liabilities), net        
Interest rate lock commitments (0.2) (11.7)    
Level 1 | Other | Fair Value        
Derivative financial instrument assets (liabilities), net        
Interest rate lock commitments $ (0.2) $ (11.7)