Quarterly report pursuant to Section 13 or 15(d)

Fair Value - Weighted Average Unobservable Assumptions Used In The Fair Value Measurements (Details)

v3.24.1.1.u2
Fair Value - Weighted Average Unobservable Assumptions Used In The Fair Value Measurements (Details)
Mar. 31, 2024
Dec. 31, 2023
Weighted Average | Discount rate    
Unobservable Assumptions    
Retained bonds, measurement input 0.073 0.067
Weighted Average | Discount rate | TRA obligation    
Unobservable Assumptions    
Deferred purchase price liabilities, measurement input 0.358 0.330
Weighted Average | WAL (in years)    
Unobservable Assumptions    
Retained bonds, measurement input 4.8 4.9
Weighted Average | Loans held for investment, subject to HMBS related obligations | CPR    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.207 0.201
Weighted Average | Loans held for investment, subject to HMBS related obligations | Loss frequency    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.042 0.045
Weighted Average | Loans held for investment, subject to HMBS related obligations | Loss severity    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.038 0.035
Weighted Average | Loans held for investment, subject to HMBS related obligations | Discount rate    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.051 0.050
Weighted Average | Loans held for investment, subject to HMBS related obligations | Average draw rate    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.011 0.011
Weighted Average | HECM buyouts - securitized (nonperforming) | CPR    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.393 0.398
Weighted Average | HECM buyouts - securitized (nonperforming) | Loss frequency    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.493 0.510
Weighted Average | HECM buyouts - securitized (nonperforming) | Loss severity    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.070 0.064
Weighted Average | HECM buyouts - securitized (nonperforming) | Discount rate    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.090 0.086
Weighted Average | HECM buyouts - securitized (performing) | CPR    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.152 0.151
Weighted Average | HECM buyouts - securitized (performing) | Loss severity    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.070 0.069
Weighted Average | HECM buyouts - securitized (performing) | Discount rate    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.085 0.082
Weighted Average | HECM buyouts - securitized (performing) | WAL (in years)    
Unobservable Assumptions    
Loans held-for-investment, measurement input 7.3 7.4
Weighted Average | Non-agency reverse mortgage loans - securitized | CPR    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.146 0.147
Weighted Average | Non-agency reverse mortgage loans - securitized | Loss severity    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.100 0.100
Weighted Average | Non-agency reverse mortgage loans - securitized | Discount rate    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.072 0.069
Weighted Average | Non-agency reverse mortgage loans - securitized | WAL (in years)    
Unobservable Assumptions    
Loans held-for-investment, measurement input 9.9 9.7
Weighted Average | Non-agency reverse mortgage loans - securitized | LTV    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.456 0.459
Weighted Average | Non-agency reverse mortgage loans - securitized | HPA    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.033 0.033
Weighted Average | Commercial mortgage loans - securitized | Discount rate    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.185 0.165
Weighted Average | Commercial mortgage loans - securitized | SMM    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.092 0.107
Weighted Average | Commercial mortgage loans - securitized | Loss rate    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.038 0.010
Weighted Average | Inventory buyouts | CPR    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.406 0.415
Weighted Average | Inventory buyouts | Loss frequency    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.468 0.482
Weighted Average | Inventory buyouts | Loss severity    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.054 0.051
Weighted Average | Inventory buyouts | Discount rate    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.090 0.086
Weighted Average | Non-agency reverse mortgage loans | CPR    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.146 0.144
Weighted Average | Non-agency reverse mortgage loans | Loss severity    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.100 0.100
Weighted Average | Non-agency reverse mortgage loans | Discount rate    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.071 0.069
Weighted Average | Non-agency reverse mortgage loans | WAL (in years)    
Unobservable Assumptions    
Loans held-for-investment, measurement input 11.5 12.1
Weighted Average | Non-agency reverse mortgage loans | LTV    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.341 0.338
Weighted Average | Non-agency reverse mortgage loans | HPA    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.032 0.031
Weighted Average | Commercial mortgage loans | Discount rate    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.136 0.132
Weighted Average | Commercial mortgage loans | SMM    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.051 0.736
Weighted Average | Commercial mortgage loans | CDR    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.312 0.256
Weighted Average | HMBS related obligations | CPR    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.246 0.238
Weighted Average | HMBS related obligations | Discount rate    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.051 0.050
Weighted Average | Performing/Nonperforming HECM securitizations | CPR    
Unobservable Assumptions    
Long-term debt, measurement input 0.230 0.219
Weighted Average | Performing/Nonperforming HECM securitizations | Discount rate    
Unobservable Assumptions    
Long-term debt, measurement input 0.103 0.100
Weighted Average | Performing/Nonperforming HECM securitizations | WAL (in years)    
Unobservable Assumptions    
Long-term debt, measurement input 0.7 0.9
Weighted Average | Securitized non-agency reverse | CPR    
Unobservable Assumptions    
Long-term debt, measurement input 0.133 0.147
Weighted Average | Securitized non-agency reverse | Discount rate    
Unobservable Assumptions    
Long-term debt, measurement input 0.072 0.070
Weighted Average | Securitized non-agency reverse | WAL (in years)    
Unobservable Assumptions    
Long-term debt, measurement input 4.6 4.5
Weighted Average | Nonrecourse commercial loan financing liability | Discount rate    
Unobservable Assumptions    
Long-term debt, measurement input 0.109 0.091
Weighted Average | Nonrecourse commercial loan financing liability | WAL (in years)    
Unobservable Assumptions    
Long-term debt, measurement input 1.2 1.8
Weighted Average | Nonrecourse commercial loan financing liability | Weighted average SMM    
Unobservable Assumptions    
Long-term debt, measurement input 0.454 0.333
Minimum | Discount rate    
Unobservable Assumptions    
Retained bonds, measurement input (0.243) (0.312)
Minimum | WAL (in years)    
Unobservable Assumptions    
Retained bonds, measurement input 2.3 2.3
Minimum | Loans held for investment, subject to HMBS related obligations | Loss severity    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.036 0.034
Minimum | HECM buyouts - securitized (nonperforming) | Loss frequency    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.231 0.231
Minimum | HECM buyouts - securitized (nonperforming) | Loss severity    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.036 0.034
Minimum | HECM buyouts - securitized (performing) | Loss severity    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.036 0.034
Minimum | Non-agency reverse mortgage loans - securitized | LTV    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.000 0.000
Minimum | Non-agency reverse mortgage loans - securitized | HPA    
Unobservable Assumptions    
Loans held-for-investment, measurement input (0.063) (0.098)
Minimum | Inventory buyouts | Loss severity    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.036 0.034
Minimum | Non-agency reverse mortgage loans | LTV    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.013 0.039
Minimum | Non-agency reverse mortgage loans | HPA    
Unobservable Assumptions    
Loans held-for-investment, measurement input (0.063) (0.098)
Minimum | Commercial mortgage loans | Discount rate    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.096 0.096
Minimum | Performing/Nonperforming HECM securitizations | CPR    
Unobservable Assumptions    
Long-term debt, measurement input 0.216 0.215
Minimum | Securitized non-agency reverse | CPR    
Unobservable Assumptions    
Long-term debt, measurement input 0.000 0.106
Minimum | Securitized non-agency reverse | WAL (in years)    
Unobservable Assumptions    
Long-term debt, measurement input 1.0 0.8
Maximum | Discount rate    
Unobservable Assumptions    
Retained bonds, measurement input 0.126 0.123
Maximum | WAL (in years)    
Unobservable Assumptions    
Retained bonds, measurement input 23.2 23.4
Maximum | Loans held for investment, subject to HMBS related obligations | Loss severity    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.145 0.129
Maximum | HECM buyouts - securitized (nonperforming) | Loss frequency    
Unobservable Assumptions    
Loans held-for-investment, measurement input 1.000 1
Maximum | HECM buyouts - securitized (nonperforming) | Loss severity    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.145 0.128
Maximum | HECM buyouts - securitized (performing) | Loss severity    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.145 0.128
Maximum | Non-agency reverse mortgage loans - securitized | LTV    
Unobservable Assumptions    
Loans held-for-investment, measurement input 1.060 0.796
Maximum | Non-agency reverse mortgage loans - securitized | HPA    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.071 0.076
Maximum | Inventory buyouts | Loss severity    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.145 0.128
Maximum | Non-agency reverse mortgage loans | LTV    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.673 0.538
Maximum | Non-agency reverse mortgage loans | HPA    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.071 0.076
Maximum | Commercial mortgage loans | Discount rate    
Unobservable Assumptions    
Loans held-for-investment, measurement input 0.207 0.200
Maximum | Performing/Nonperforming HECM securitizations | CPR    
Unobservable Assumptions    
Long-term debt, measurement input 0.242 0.223
Maximum | Securitized non-agency reverse | CPR    
Unobservable Assumptions    
Long-term debt, measurement input 0.210 0.223
Maximum | Securitized non-agency reverse | WAL (in years)    
Unobservable Assumptions    
Long-term debt, measurement input 11.1 11.2