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Home Equity Investments (HEI) - Schedule of Geographic Concentration of HEI (Details) - Geographic Concentration Risk - Investments Benchmark | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
HEI at Redwood |  |
Schedule of Equity Method Investments [Line Items] |  |
Concentration risk percentage | 100.00% | 100.00%
HEI at Redwood | California |  |
Schedule of Equity Method Investments [Line Items] |  |
Concentration risk percentage | 48.00% | 44.00%
HEI at Redwood | Florida |  |
Schedule of Equity Method Investments [Line Items] |  |
Concentration risk percentage | 12.00% | 14.00%
HEI at Redwood | Washington |  |
Schedule of Equity Method Investments [Line Items] |  |
Concentration risk percentage | 6.00% | 6.00%
HEI at Redwood | Colorado |  |
Schedule of Equity Method Investments [Line Items] |  |
Concentration risk percentage | 6.00% | 5.00%
HEI at Redwood | Arizona |  |
Schedule of Equity Method Investments [Line Items] |  |
Concentration risk percentage | 5.00% | 7.00%
HEI at Redwood | New York |  |
Schedule of Equity Method Investments [Line Items] |  |
Concentration risk percentage | 4.00% | 4.00%
HEI at Redwood | Other states (none greater than 5%) |  |
Schedule of Equity Method Investments [Line Items] |  |
Concentration risk percentage | 19.00% | 20.00%
Securitized HEI |  |
Schedule of Equity Method Investments [Line Items] |  |
Concentration risk percentage | 100.00% | 100.00%
Securitized HEI | California |  |
Schedule of Equity Method Investments [Line Items] |  |
Concentration risk percentage | 47.00% | 59.00%
Securitized HEI | Florida |  |
Schedule of Equity Method Investments [Line Items] |  |
Concentration risk percentage | 7.00% | 4.00%
Securitized HEI | Washington |  |
Schedule of Equity Method Investments [Line Items] |  |
Concentration risk percentage | 7.00% | 6.00%
Securitized HEI | Colorado |  |
Schedule of Equity Method Investments [Line Items] |  |
Concentration risk percentage | 4.00% | 4.00%
Securitized HEI | Arizona |  |
Schedule of Equity Method Investments [Line Items] |  |
Concentration risk percentage | 6.00% | 0.00%
Securitized HEI | New York |  |
Schedule of Equity Method Investments [Line Items] |  |
Concentration risk percentage | 7.00% | 11.00%
Securitized HEI | Other states (none greater than 5%) |  |
Schedule of Equity Method Investments [Line Items] |  |
Concentration risk percentage | 22.00% | 16.00%

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