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Fair Value of Financial Instruments - Quantitative Information about Significant Unobservable Inputs Used in Valuation of Level 3 Assets and Liabilities Measured at Fair Value (Details)
 12 Months Ended
Dec. 31, 2021
USD ($)
$ / loan
Dec. 31, 2020
USD ($)
$ / loan
Variable Interest Entity, Primary Beneficiary | Collateralized Financing Entities | Point    
Liabilities    
Fair value of securities owned | $ $ 10,000,000  
ABS Issued Securities    
Liabilities    
ABS issued | $ $ 3,610,929,000  
ABS Issued Securities | Prepayment rate (annual CPR) | Minimum    
Liabilities    
ABS issued, measurement inputs 0.07  
ABS Issued Securities | Prepayment rate (annual CPR) | Maximum    
Liabilities    
ABS issued, measurement inputs 0.50  
ABS Issued Securities | Prepayment rate (annual CPR) | Weighted Average    
Liabilities    
ABS issued, measurement inputs 0.28  
ABS Issued Securities | Discount rate | Minimum    
Liabilities    
ABS issued, measurement inputs 0.01  
ABS Issued Securities | Discount rate | Maximum    
Liabilities    
ABS issued, measurement inputs 0.18  
ABS Issued Securities | Discount rate | Weighted Average    
Liabilities    
ABS issued, measurement inputs 0.04  
ABS Issued Securities | Default rate | Minimum    
Liabilities    
ABS issued, measurement inputs 0  
ABS Issued Securities | Default rate | Maximum    
Liabilities    
ABS issued, measurement inputs 0.37  
ABS Issued Securities | Default rate | Weighted Average    
Liabilities    
ABS issued, measurement inputs 0.01  
ABS Issued Securities | Loss severity | Minimum    
Liabilities    
ABS issued, measurement inputs 0.25  
ABS Issued Securities | Loss severity | Maximum    
Liabilities    
ABS issued, measurement inputs 0.50  
ABS Issued Securities | Loss severity | Weighted Average    
Liabilities    
ABS issued, measurement inputs 0.32  
CAFL(1)    
Liabilities    
ABS issued | $ $ 3,207,444,000  
CAFL(1) | Prepayment rate (annual CPR) | Minimum    
Liabilities    
ABS issued, measurement inputs 0.03  
CAFL(1) | Prepayment rate (annual CPR) | Maximum    
Liabilities    
ABS issued, measurement inputs 0.03  
CAFL(1) | Prepayment rate (annual CPR) | Weighted Average    
Liabilities    
ABS issued, measurement inputs 0.03  
CAFL(1) | Discount rate | Minimum    
Liabilities    
ABS issued, measurement inputs 0.01  
CAFL(1) | Discount rate | Maximum    
Liabilities    
ABS issued, measurement inputs 0.12  
CAFL(1) | Discount rate | Weighted Average    
Liabilities    
ABS issued, measurement inputs 0.03  
CAFL(1) | Default rate | Minimum    
Liabilities    
ABS issued, measurement inputs 0.05  
CAFL(1) | Default rate | Maximum    
Liabilities    
ABS issued, measurement inputs 0.20  
CAFL(1) | Default rate | Weighted Average    
Liabilities    
ABS issued, measurement inputs 0.08  
CAFL(1) | Loss severity | Minimum    
Liabilities    
ABS issued, measurement inputs 0.30  
CAFL(1) | Loss severity | Maximum    
Liabilities    
ABS issued, measurement inputs 0.30  
CAFL(1) | Loss severity | Weighted Average    
Liabilities    
ABS issued, measurement inputs 0.30  
Freddie Mac SLST(1)    
Liabilities    
ABS issued | $ $ 1,445,507,000  
Freddie Mac SLST(1) | Prepayment rate (annual CPR) | Minimum    
Liabilities    
ABS issued, measurement inputs 0.06  
Freddie Mac SLST(1) | Prepayment rate (annual CPR) | Maximum    
Liabilities    
ABS issued, measurement inputs 0.08  
Freddie Mac SLST(1) | Prepayment rate (annual CPR) | Weighted Average    
Liabilities    
ABS issued, measurement inputs 0.06  
Freddie Mac SLST(1) | Discount rate | Minimum    
Liabilities    
ABS issued, measurement inputs 0.02  
Freddie Mac SLST(1) | Discount rate | Maximum    
Liabilities    
ABS issued, measurement inputs 0.07  
Freddie Mac SLST(1) | Discount rate | Weighted Average    
Liabilities    
ABS issued, measurement inputs 0.03  
Freddie Mac SLST(1) | Default rate | Minimum    
Liabilities    
ABS issued, measurement inputs 0.09  
Freddie Mac SLST(1) | Default rate | Maximum    
Liabilities    
ABS issued, measurement inputs 0.10  
Freddie Mac SLST(1) | Default rate | Weighted Average    
Liabilities    
ABS issued, measurement inputs 0.09  
Freddie Mac SLST(1) | Loss severity | Minimum    
Liabilities    
ABS issued, measurement inputs 0.35  
Freddie Mac SLST(1) | Loss severity | Maximum    
Liabilities    
ABS issued, measurement inputs 0.35  
Freddie Mac SLST(1) | Loss severity | Weighted Average    
Liabilities    
ABS issued, measurement inputs 0.35  
Freddie Mac K-Series    
Liabilities    
ABS issued | $ $ 441,857,000  
Freddie Mac K-Series | Discount rate | Minimum    
Liabilities    
ABS issued, measurement inputs 0.01  
Freddie Mac K-Series | Discount rate | Maximum    
Liabilities    
ABS issued, measurement inputs 0.08  
Freddie Mac K-Series | Discount rate | Weighted Average    
Liabilities    
ABS issued, measurement inputs 0.02  
Consolidated Point Entities    
Liabilities    
ABS issued | $ $ 137,410,000  
Consolidated Point Entities | Prepayment rate (annual CPR) | Minimum    
Liabilities    
ABS issued, measurement inputs 0.20  
Consolidated Point Entities | Prepayment rate (annual CPR) | Maximum    
Liabilities    
ABS issued, measurement inputs 0.20  
Consolidated Point Entities | Prepayment rate (annual CPR) | Weighted Average    
Liabilities    
ABS issued, measurement inputs 0.20  
Consolidated Point Entities | Discount rate | Minimum    
Liabilities    
ABS issued, measurement inputs 0.04  
Consolidated Point Entities | Discount rate | Maximum    
Liabilities    
ABS issued, measurement inputs 0.15  
Consolidated Point Entities | Discount rate | Weighted Average    
Liabilities    
ABS issued, measurement inputs 0.05  
Consolidated Point Entities | Default rate | Minimum    
Liabilities    
ABS issued, measurement inputs 0.06  
Consolidated Point Entities | Default rate | Maximum    
Liabilities    
ABS issued, measurement inputs 0.06  
Consolidated Point Entities | Default rate | Weighted Average    
Liabilities    
ABS issued, measurement inputs 0.06  
Consolidated Point Entities | Loss severity | Minimum    
Liabilities    
ABS issued, measurement inputs 0.25  
Consolidated Point Entities | Loss severity | Maximum    
Liabilities    
ABS issued, measurement inputs 0.25  
Consolidated Point Entities | Loss severity | Weighted Average    
Liabilities    
ABS issued, measurement inputs 0.25  
Consolidated Point Entities | Home price appreciation | Minimum    
Liabilities    
ABS issued, measurement inputs 0.03  
Consolidated Point Entities | Home price appreciation | Maximum    
Liabilities    
ABS issued, measurement inputs 0.04  
Consolidated Point Entities | Home price appreciation | Weighted Average    
Liabilities    
ABS issued, measurement inputs 0.03  
Jumbo fixed-rate loans    
Assets    
Loans, held-for-investment | $ $ 1,200,322,000  
Jumbo fixed-rate loans | Whole loan spread to swap rate | Minimum    
Assets    
Loans held-for-sale, measurement input 0.0185  
Jumbo fixed-rate loans | Whole loan spread to swap rate | Maximum    
Assets    
Loans held-for-sale, measurement input 0.0185  
Jumbo fixed-rate loans | Whole loan spread to swap rate | Weighted Average    
Assets    
Loans held-for-sale, measurement input 0.0185  
Jumbo fixed-rate loans | Prepayment rate (annual CPR) | Minimum    
Assets    
Loans held-for-sale, measurement input 0.20  
Jumbo fixed-rate loans | Prepayment rate (annual CPR) | Maximum    
Assets    
Loans held-for-sale, measurement input 0.20  
Jumbo fixed-rate loans | Prepayment rate (annual CPR) | Weighted Average    
Assets    
Loans held-for-sale, measurement input 0.20  
Jumbo fixed-rate loans | Whole loan spread to TBA price | Minimum    
Assets    
Loans held-for-sale, measurement input 2.56  
Jumbo fixed-rate loans | Whole loan spread to TBA price | Maximum    
Assets    
Loans held-for-sale, measurement input 2.56  
Jumbo fixed-rate loans | Whole loan spread to TBA price | Weighted Average    
Assets    
Loans held-for-sale, measurement input 2.56  
Jumbo loans committed to sell    
Assets    
Loans, held-for-investment | $ $ 644,926,000  
Jumbo loans committed to sell | Whole loan committed sales price | Minimum    
Assets    
Loans held-for-sale, measurement input 101.91  
Jumbo loans committed to sell | Whole loan committed sales price | Maximum    
Assets    
Loans held-for-sale, measurement input 102.58  
Jumbo loans committed to sell | Whole loan committed sales price | Weighted Average    
Assets    
Loans held-for-sale, measurement input 102.19  
Legacy Sequoia    
Assets    
Loans, held-for-investment | $ $ 230,455,000  
Sequoia    
Assets    
Loans, held-for-investment | $ 3,628,465,000  
Liabilities    
Fair value of securities owned | $ 248,000,000  
Freddie Mac SLST(1)    
Assets    
Loans, held-for-investment | $ 1,888,230,000  
Liabilities    
Fair value of securities owned | $ 445,000,000 $ 428,000,000
Single-family rental loans    
Assets    
Loans, held-for-investment | $ $ 358,309,000  
Single-family rental loans | Prepayment rate (annual CPR) | Minimum    
Assets    
Loans receivable, measurement input 0.03  
Single-family rental loans | Prepayment rate (annual CPR) | Maximum    
Assets    
Loans receivable, measurement input 0.03  
Single-family rental loans | Prepayment rate (annual CPR) | Weighted Average    
Assets    
Loans receivable, measurement input 0.03  
Single-family rental loans | Non-securitizable loan dollar price | Minimum    
Assets    
Loans receivable, measurement input 78  
Single-family rental loans | Non-securitizable loan dollar price | Maximum    
Assets    
Loans receivable, measurement input 103  
Single-family rental loans | Non-securitizable loan dollar price | Weighted Average    
Assets    
Loans receivable, measurement input 99  
Single-family rental loans | Senior credit spread | Minimum    
Assets    
Loans receivable, measurement input 0.0085  
Single-family rental loans | Senior credit spread | Maximum    
Assets    
Loans receivable, measurement input 0.0110  
Single-family rental loans | Senior credit spread | Weighted Average    
Assets    
Loans receivable, measurement input 0.0091  
Single-family rental loans | Subordinate credit spread | Minimum    
Assets    
Loans receivable, measurement input 0.0125  
Single-family rental loans | Subordinate credit spread | Maximum    
Assets    
Loans receivable, measurement input 0.1517  
Single-family rental loans | Subordinate credit spread | Weighted Average    
Assets    
Loans receivable, measurement input 0.0362  
Single-family rental loans | Senior credit support | Minimum    
Assets    
Loans receivable, measurement input 0.36  
Single-family rental loans | Senior credit support | Maximum    
Assets    
Loans receivable, measurement input 0.36  
Single-family rental loans | Senior credit support | Weighted Average    
Assets    
Loans receivable, measurement input 0.36  
Single-family rental loans | IO discount rate | Minimum    
Assets    
Loans receivable, measurement input 0.08  
Single-family rental loans | IO discount rate | Maximum    
Assets    
Loans receivable, measurement input 0.14  
Single-family rental loans | IO discount rate | Weighted Average    
Assets    
Loans receivable, measurement input 0.09  
CAFL(1)    
Assets    
Loans, held-for-investment | $ $ 3,488,074,000  
Liabilities    
Fair value of securities owned | $ 302,000,000 $ 239,000,000
Residential Bridge, Held-for-investment at fair value    
Assets    
Loans, held-for-investment | $ $ 944,606,000  
Residential Bridge, Held-for-investment at fair value | Discount rate | Minimum    
Assets    
Loans receivable, measurement input 0.04  
Residential Bridge, Held-for-investment at fair value | Discount rate | Maximum    
Assets    
Loans receivable, measurement input 0.15  
Residential Bridge, Held-for-investment at fair value | Discount rate | Weighted Average    
Assets    
Loans receivable, measurement input 0.06  
Freddie Mac K-Series    
Assets    
Loans, held-for-investment | $ $ 473,514,000  
Liabilities    
Fair value of securities owned | $ 32,000,000  
Trading and AFS securities    
Assets    
Trading and AFS securities | $ $ 377,411,000  
Trading and AFS securities | Prepayment rate (annual CPR) | Minimum    
Assets    
Trading and AFS securities, measurement inputs 0.07  
Trading and AFS securities | Prepayment rate (annual CPR) | Maximum    
Assets    
Trading and AFS securities, measurement inputs 0.50  
Trading and AFS securities | Prepayment rate (annual CPR) | Weighted Average    
Assets    
Trading and AFS securities, measurement inputs 0.26  
Trading and AFS securities | Discount rate | Minimum    
Assets    
Trading and AFS securities, measurement inputs 0.02  
Trading and AFS securities | Discount rate | Maximum    
Assets    
Trading and AFS securities, measurement inputs 0.47  
Trading and AFS securities | Discount rate | Weighted Average    
Assets    
Trading and AFS securities, measurement inputs 0.07  
Trading and AFS securities | Default rate | Minimum    
Assets    
Trading and AFS securities, measurement inputs 0  
Trading and AFS securities | Default rate | Maximum    
Assets    
Trading and AFS securities, measurement inputs 0.27  
Trading and AFS securities | Default rate | Weighted Average    
Assets    
Trading and AFS securities, measurement inputs 0.04  
Trading and AFS securities | Loss severity | Minimum    
Assets    
Trading and AFS securities, measurement inputs 0  
Trading and AFS securities | Loss severity | Maximum    
Assets    
Trading and AFS securities, measurement inputs 0.50  
Trading and AFS securities | Loss severity | Weighted Average    
Assets    
Trading and AFS securities, measurement inputs 0.24  
Trading and AFS securities | CRT dollar price | Minimum    
Assets    
Loans held-for-sale, measurement input 102  
Trading and AFS securities, measurement inputs 96  
Trading and AFS securities | CRT dollar price | Maximum    
Assets    
Loans held-for-sale, measurement input 102  
Trading and AFS securities, measurement inputs 112  
Trading and AFS securities | CRT dollar price | Weighted Average    
Assets    
Loans held-for-sale, measurement input 102  
Trading and AFS securities, measurement inputs 103  
Servicer advance investments    
Assets    
Servicing asset | $ $ 350,923,000  
Servicer advance investments | Minimum    
Assets    
Expected remaining life 4 years  
Servicer advance investments | Maximum    
Assets    
Expected remaining life 5 years  
Servicer advance investments | Weighted Average    
Assets    
Expected remaining life 5 years  
Servicer advance investments | Prepayment rate (annual CPR) | Minimum    
Assets    
Servicing assets, measurement inputs 0.17  
Servicer advance investments | Prepayment rate (annual CPR) | Maximum    
Assets    
Servicing assets, measurement inputs 0.30  
Servicer advance investments | Prepayment rate (annual CPR) | Weighted Average    
Assets    
Servicing assets, measurement inputs 0.18  
Servicer advance investments | Discount rate | Minimum    
Assets    
Servicing assets, measurement inputs 0.02  
Servicer advance investments | Discount rate | Maximum    
Assets    
Servicing assets, measurement inputs 0.04  
Servicer advance investments | Discount rate | Weighted Average    
Assets    
Servicing assets, measurement inputs 0.03  
Servicer advance investments | Mortgage servicing income | Minimum    
Assets    
Loan purchase commitments, net, measurement inputs 0.0002  
Servicer advance investments | Mortgage servicing income | Maximum    
Assets    
Loan purchase commitments, net, measurement inputs 0.0018  
Servicer advance investments | Mortgage servicing income | Weighted Average    
Assets    
Loan purchase commitments, net, measurement inputs 0.0011  
MSRs    
Assets    
Servicing asset | $ $ 12,438,000  
MSRs | Prepayment rate (annual CPR) | Minimum    
Assets    
Servicing assets, measurement inputs 0.06  
MSRs | Prepayment rate (annual CPR) | Maximum    
Assets    
Servicing assets, measurement inputs 0.79  
MSRs | Prepayment rate (annual CPR) | Weighted Average    
Assets    
Servicing assets, measurement inputs 0.24  
MSRs | Discount rate | Minimum    
Assets    
Servicing assets, measurement inputs 0.12  
MSRs | Discount rate | Maximum    
Assets    
Servicing assets, measurement inputs 0.15  
MSRs | Discount rate | Weighted Average    
Assets    
Servicing assets, measurement inputs 0.13  
MSRs | Per loan annual cost to service | Minimum    
Assets    
Servicing assets, measurement inputs 95  
MSRs | Per loan annual cost to service | Maximum    
Assets    
Servicing assets, measurement inputs 95  
MSRs | Per loan annual cost to service | Weighted Average    
Assets    
Servicing assets, measurement inputs 95  
Excess MSRs    
Assets    
Servicing asset | $ $ 44,231,000  
Excess MSRs | Prepayment rate (annual CPR) | Minimum    
Assets    
Servicing assets, measurement inputs 0.19  
Excess MSRs | Prepayment rate (annual CPR) | Maximum    
Assets    
Servicing assets, measurement inputs 0.31  
Excess MSRs | Prepayment rate (annual CPR) | Weighted Average    
Assets    
Servicing assets, measurement inputs 0.22  
Excess MSRs | Discount rate | Minimum    
Assets    
Servicing assets, measurement inputs 0.13  
Excess MSRs | Discount rate | Maximum    
Assets    
Servicing assets, measurement inputs 0.19  
Excess MSRs | Discount rate | Weighted Average    
Assets    
Servicing assets, measurement inputs 0.17  
Excess MSRs | Excess mortgage servicing amount | Minimum    
Assets    
Servicing assets, measurement inputs 0.0009  
Excess MSRs | Excess mortgage servicing amount | Maximum    
Assets    
Servicing assets, measurement inputs 0.0017  
Excess MSRs | Excess mortgage servicing amount | Weighted Average    
Assets    
Servicing assets, measurement inputs 0.0011  
HEIs    
Assets    
Home Appreciation Options, Fair value Disclosure | $ $ 33,187,000  
Point Options Held By Point    
Assets    
Home Appreciation Options, Fair value Disclosure | $ 159,553,000  
REO    
Assets    
REO | $ $ 588,000  
REO | Loss severity | Minimum    
Assets    
REO, measurement inputs 0.09  
REO | Loss severity | Maximum    
Assets    
REO, measurement inputs 1  
REO | Loss severity | Weighted Average    
Assets    
REO, measurement inputs 0.17  
Loan purchase and interest rate lock commitments    
Assets    
Loan purchase commitments, net | $ $ 3,464,000  
Loan purchase and interest rate lock commitments | Prepayment rate (annual CPR) | Minimum    
Assets    
Loan purchase commitments, net, measurement inputs 0.20  
Loan purchase and interest rate lock commitments | Prepayment rate (annual CPR) | Maximum    
Assets    
Loan purchase commitments, net, measurement inputs 0.20  
Loan purchase and interest rate lock commitments | Prepayment rate (annual CPR) | Weighted Average    
Assets    
Loan purchase commitments, net, measurement inputs 0.20  
Loan purchase and interest rate lock commitments | Pull-through rate | Minimum    
Assets    
Loan purchase commitments, net, measurement inputs 0.07  
Loan purchase and interest rate lock commitments | Pull-through rate | Maximum    
Assets    
Loan purchase commitments, net, measurement inputs 1  
Loan purchase and interest rate lock commitments | Pull-through rate | Weighted Average    
Assets    
Loan purchase commitments, net, measurement inputs 0.69  
Loan purchase and interest rate lock commitments | Whole loan spread to TBA price | Minimum    
Assets    
Loan purchase commitments, net, measurement inputs 2.56  
Loan purchase and interest rate lock commitments | Whole loan spread to TBA price | Maximum    
Assets    
Loan purchase commitments, net, measurement inputs 2.56  
Loan purchase and interest rate lock commitments | Whole loan spread to TBA price | Weighted Average    
Assets    
Loan purchase commitments, net, measurement inputs 2.56  
Loan purchase and interest rate lock commitments | Whole loan spread to swap rate | Minimum    
Assets    
Loan purchase commitments, net, measurement inputs 0.0185  
Loan purchase and interest rate lock commitments | Whole loan spread to swap rate | Maximum    
Assets    
Loan purchase commitments, net, measurement inputs 0.0185  
Loan purchase and interest rate lock commitments | Whole loan spread to swap rate | Weighted Average    
Assets    
Loan purchase commitments, net, measurement inputs 0.0185  
Loan purchase and interest rate lock commitments | Committed sales price | Minimum    
Assets    
Loan purchase commitments, measurement input 101.97  
Loan purchase and interest rate lock commitments | Committed sales price | Maximum    
Assets    
Loan purchase commitments, measurement input 102.62  
Loan purchase and interest rate lock commitments | Committed sales price | Weighted Average    
Assets    
Loan purchase commitments, measurement input 102.07  
Single-family loan purchase commitments    
Assets    
Loan purchase commitments, net | $ $ 666,000  
Single-family loan purchase commitments | Prepayment rate (annual CPR) | Minimum    
Assets    
Loan purchase commitments, net, measurement inputs 0.03  
Single-family loan purchase commitments | Prepayment rate (annual CPR) | Maximum    
Assets    
Loan purchase commitments, net, measurement inputs 0.03  
Single-family loan purchase commitments | Prepayment rate (annual CPR) | Weighted Average    
Assets    
Loan purchase commitments, net, measurement inputs 0.03  
Single-family loan purchase commitments | Senior credit spread | Minimum    
Assets    
Loan purchase commitments, net, measurement inputs   0.0085
Single-family loan purchase commitments | Senior credit spread | Maximum    
Assets    
Loan purchase commitments, net, measurement inputs   0.0085
Single-family loan purchase commitments | Senior credit spread | Weighted Average    
Assets    
Loan purchase commitments, net, measurement inputs   0.0085
Single-family loan purchase commitments | Subordinate credit spread | Minimum    
Assets    
Loan purchase commitments, net, measurement inputs   0.0125
Single-family loan purchase commitments | Subordinate credit spread | Maximum    
Assets    
Loan purchase commitments, net, measurement inputs   0.1517
Single-family loan purchase commitments | Subordinate credit spread | Weighted Average    
Assets    
Loan purchase commitments, net, measurement inputs   0.0450
Single-family loan purchase commitments | Senior credit support | Minimum    
Assets    
Loan purchase commitments, net, measurement inputs 0.30  
Single-family loan purchase commitments | Senior credit support | Maximum    
Assets    
Loan purchase commitments, net, measurement inputs 0.30  
Single-family loan purchase commitments | Senior credit support | Weighted Average    
Assets    
Loan purchase commitments, net, measurement inputs 0.30  
Single-family loan purchase commitments | IO discount rate | Minimum    
Assets    
Loan purchase commitments, net, measurement inputs 0.08  
Single-family loan purchase commitments | IO discount rate | Maximum    
Assets    
Loan purchase commitments, net, measurement inputs 0.08  
Single-family loan purchase commitments | IO discount rate | Weighted Average    
Assets    
Loan purchase commitments, net, measurement inputs 0.08  
Single-family loan purchase commitments | Pull-through rate | Minimum    
Assets    
Loan purchase commitments, net, measurement inputs 1  
Single-family loan purchase commitments | Pull-through rate | Maximum    
Assets    
Loan purchase commitments, net, measurement inputs 1  
Single-family loan purchase commitments | Pull-through rate | Weighted Average    
Assets    
Loan purchase commitments, net, measurement inputs 1  
HEIs | Prepayment rate (annual CPR) | Minimum    
Assets    
Shared home appreciation options, measurement inputs 0.01  
HEIs | Prepayment rate (annual CPR) | Maximum    
Assets    
Shared home appreciation options, measurement inputs 0.24  
HEIs | Prepayment rate (annual CPR) | Weighted Average    
Assets    
Shared home appreciation options, measurement inputs 0.17  
HEIs | Discount rate | Minimum    
Assets    
Shared home appreciation options, measurement inputs 0.10  
HEIs | Discount rate | Maximum    
Assets    
Shared home appreciation options, measurement inputs 0.10  
HEIs | Discount rate | Weighted Average    
Assets    
Shared home appreciation options, measurement inputs 0.10  
HEIs | Home price appreciation | Minimum    
Assets    
Shared home appreciation options, measurement inputs 0.03  
HEIs | Home price appreciation | Maximum    
Assets    
Shared home appreciation options, measurement inputs 0.04  
HEIs | Home price appreciation | Weighted Average    
Assets    
Shared home appreciation options, measurement inputs 0.03