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Commitments and Contingencies - Contractual Commitments (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Agency Business Commitments [Line Items] |  |  |
Cash collateral per securitization | $ 5,000 |  |
Outstanding letters of credit | 5,000 |  |
Debt Obligations |  |  |
2025 | 4,314,861 |  |
2026 | 3,540,874 |  |
2027 | 1,772,038 |  |
2028 | 180,000 |  |
2029 | 0 |  |
Thereafter | 154,336 |  |
Net Carrying Value | 9,962,109 |  |
Minimum Annual Operating Lease Payments |  |  |
2025 | 11,081 |  |
2026 | 11,297 |  |
2027 | 9,782 |  |
2028 | 9,093 |  |
2029 | 8,576 |  |
Thereafter | 19,308 |  |
Total | 69,137 |  |
Total |  |  |
2025 | 4,325,942 |  |
2026 | 3,552,171 |  |
2027 | 1,781,820 |  |
2028 | 189,093 |  |
2029 | 8,576 |  |
Thereafter | 173,644 |  |
Total | $ 10,031,246 |  |
Operating Lease, Weighted average remaining lease term (in years) | 6 years 9 months 18 days | 7 years 7 months 6 days |
Operating Lease, Weighted average discount rate (as a percent) | 5.80% | 5.70% |
Operating lease expense | $ 10,900 | $ 10,900 | $ 9,600
Unfunded CLO Commitments |  |  |
Unfunded commitments related to structured loans and investments | 2,200,000 | $ 1,310,000 |
Fannie Mae Mortgage |  |  |
Agency Business Commitments [Line Items] |  |  |
Minimum liquid assets to be maintained to meet operational liquidity requirements | $ 22,400 |  |
Period of funding for collateral requirement | 48 months |  |
Letter of credit required amount | $ 91,500 |  |
Letter of credit assigned | 70,000 |  |
Reserve required to fund additional restricted liquidity over the next 48 months | $ 35,200 |  |
Period of additional funding for collateral requirement | 48 months |  |
Forward Contracts |  |  |
Agency Business Commitments [Line Items] |  |  |
Period of contractual commitment | 60 days |  |
Minimum |  |  |
Total |  |  |
Remaining lease term | 2 years 1 month 6 days | 9 months 18 days |
Maximum |  |  |
Total |  |  |
Remaining lease term | 9 years 2 months 12 days | 10 years 1 month 6 days |

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