v3.26.1
Nonrecourse Debt, at Fair Value - Schedule of Nonrecourse Debt at Fair Value (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Debt Instrument [Line Items]    
Total nonrecourse debt, at fair value $ 10,450,834 $ 9,736,493
Nonrecourse    
Debt Instrument [Line Items]    
UPB 10,728,087 9,584,101
Nonrecourse loan financing liability 0 376,423
Fair value adjustments $ (277,253) (224,031)
Securitization of non-agency reverse mortgage loans    
Debt Instrument [Line Items]    
Issue Date May 2018 - March 2026  
Final Maturity Date December 2053 - March 2076  
Original Issue Amount $ 11,539,661  
Securitization of non-agency reverse mortgage loans | Nonrecourse    
Debt Instrument [Line Items]    
UPB $ 9,932,590 8,834,991
Securitization of non-agency reverse mortgage loans | Minimum    
Debt Instrument [Line Items]    
Interest Rate 2.00%  
Securitization of non-agency reverse mortgage loans | Maximum    
Debt Instrument [Line Items]    
Interest Rate 7.00%  
Securitization of performing/nonperforming HECM loans    
Debt Instrument [Line Items]    
Issue Date November 2025 - March 2026  
Final Maturity Date November 2035 - March 2036  
Original Issue Amount $ 839,600  
Securitization of performing/nonperforming HECM loans | Nonrecourse    
Debt Instrument [Line Items]    
UPB $ 795,497 $ 749,110
Securitization of performing/nonperforming HECM loans | Minimum    
Debt Instrument [Line Items]    
Interest Rate 4.25%  
Securitization of performing/nonperforming HECM loans | Maximum    
Debt Instrument [Line Items]    
Interest Rate 6.00%