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Residential Consumer Loans - Schedule of Activity of Residential Consumer Loans Held-for-Investment at Consolidated Entities (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2025 | Mar. 31, 2024
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |
Principal value of loans transferred from HFS to HFI | $ 1,771,471 | $ 1,284,529
Held-for-investment at fair value | Sequoia |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |
Net market valuation gains (losses) recorded | 81,684 | (54,808)
Held-for-investment at fair value | Freddie Mac SLST |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |
Net market valuation gains (losses) recorded | 58,594 | (4,231)
Held-for-investment at fair value | Sequoia |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |
Principal value of loans transferred from HFS to HFI | $ 1,623,900 | $ 1,187,961

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