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Residential Consumer Loans - Schedule of Activity of Residential Consumer Loans Held-for-Sale (Details) - Residential Consumer Loans - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |  |  |
Principal balance of loans acquired | $ 3,845,429 | $ 1,999,621 | $ 9,158,820 | $ 4,873,608
Principal balance of loans sold | 861,850 | 39,497 | 2,123,601 | 246,641
Principal balance of loans transferred from HFS to HFI | $ 1,878,024 | $ 1,528,163 | $ 5,551,389 | $ 4,140,150

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