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Securitized Debt at Amortized Cost and Securitized Debt at Fair Value - Summary of Effective Interest Rate of Securitized Debt at Amortized Cost and Securitized Debt at Fair Value (Details) - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2025 | Sep. 30, 2024
Debt Instrument [Line Items] |  |
Average outstanding unpaid principal balance | $ 4,829,808 | $ 3,668,377
Effective interest rate | 6.10% | 5.78%
Securitized Debt |  |
Debt Instrument [Line Items] |  |
Interest expense - portfolio related | $ 220,788 | $ 159,122

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