Annual report [Section 13 and 15(d), not S-K Item 405]

REVERSE MORTGAGE LOANS HELD FOR INVESTMENT AND HMBS-RELATED BORROWINGS - Schedule of Significant Unobservable Inputs Used to Value the Reverse Mortgage Loans Held for Investment and HMBS-related Borrowings (Details)

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REVERSE MORTGAGE LOANS HELD FOR INVESTMENT AND HMBS-RELATED BORROWINGS - Schedule of Significant Unobservable Inputs Used to Value the Reverse Mortgage Loans Held for Investment and HMBS-related Borrowings (Details)
Dec. 31, 2024
Year
Dec. 31, 2023
Year
Minimum | Life in years    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Measurement input 0.1 0.1
Minimum | Discount rate    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Measurement input 0.120 0.120
Minimum | Conditional prepayment rate including voluntary and involuntary prepayments    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Measurement input 0.065 0.069
Maximum | Life in years    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Measurement input 9.2 8.9
Maximum | Discount rate    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Measurement input 0.120 0.120
Maximum | Conditional prepayment rate including voluntary and involuntary prepayments    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Measurement input 0.109 0.113
Weighted Average | Life in years    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Measurement input 6.8 7.2
Weighted Average | Discount rate    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Measurement input 0.120 0.120
Weighted Average | Conditional prepayment rate including voluntary and involuntary prepayments    
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]    
Measurement input 0.079 0.081