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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 | 6 Months Ended
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Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 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 |  |  | $ 3,792,872 | $ 2,818,171
Held-for-investment at fair value | Securitized Jumbo Loans |  |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |  |  |
Net market valuation gains (losses) recorded | $ 52,453 | $ (48,590) | 134,137 | (103,399)
Held-for-investment at fair value | Securitized Jumbo Loans |  |  |  |
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 | $ 2,049,465 | $ 1,424,026 | $ 3,673,365 | $ 2,611,987

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