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Use of Special Purpose Entities and Variable Interest Entities - Narrative (Details) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2026 USD ($) entity | Mar. 31, 2026 USD ($) entity | Jun. 30, 2025 USD ($) | Jun. 30, 2026 USD ($) | Jun. 30, 2025 USD ($) | Dec. 31, 2025 USD ($)
Variable Interest Entity [Line Items] |  |  |  |  |  |
Number of SPE liquidated | entity | 4 | 3 |  |  |  |
Primary beneficiary, maximum loss exposure, amount | $ 12,800 |  |  | $ 12,800 |  |
Total residential whole loans | 8,800,000 |  |  | 8,800,000 |  | $ 8,800,000
Asset-backed Securities, Securitized Loans and Receivables |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |
Proceeds from issuance of debt |  |  |  | 10,220,276 |  | 10,061,131
Residential whole loans transferred to consolidated VIEs | 7,200,000 |  |  | 7,200,000 |  | 7,600,000
Securitized debt | 6,200,000 |  |  | 6,200,000 |  | 6,300,000
Asset-backed Securities, Securitized Loans and Receivables | Balance Sheet Location [Axis]: us-gaap:OtherAssets |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |
Real estate owned at fair value | 45,500 |  |  | 45,500 |  | $ 52,400
Asset-backed Securities, Securitized Loans and Receivables | Senior Bonds |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |
Proceeds from issuance of debt | 772,200 |  | $ 291,300 | 1,500,000 | $ 574,700 |
Proceed from debt net of offering expenses and underwriting discount | 771,800 |  | $ 291,300 | $ 1,500,000 | $ 574,700 |
Repayments of debt | $ 385,100 | $ 470,100 |  |  |  |

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