Commercial Mortgage Loans, Subordinate Loans and Other Lending Assets, Net - Schedule of Activity Relating to Loan Portfolio (Details) - USD ($) $ in Thousands |
6 Months Ended | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
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| Principal Balance | ||||||||||||||||
| Principal value, beginning balance | $ 8,812,970 | |||||||||||||||
| New loan fundings | 299,900 | $ 1,376,101 | ||||||||||||||
| Specific CECL Allowance | ||||||||||||||||
| Specific provision for loan loss, beginning | (38,754) | |||||||||||||||
| Commercial Mortgage and Subordinated Portfolio Segment | ||||||||||||||||
| Principal Balance | ||||||||||||||||
| Principal value, beginning balance | 9,204,060 | |||||||||||||||
| New loan fundings | 299,900 | |||||||||||||||
| Add-on loan fundings | [1] | 373,806 | ||||||||||||||
| Loan repayments and sale | (9,500,444) | |||||||||||||||
| Net realized loss on investments | [2] | (387,561) | ||||||||||||||
| Gain (loss) on foreign currency translation | 5,615 | |||||||||||||||
| Amortization of fees | 4,624 | |||||||||||||||
| Principal value, ending balance | 0 | |||||||||||||||
| Deferred Fees/Other Items | ||||||||||||||||
| Deferred fees/other items, beginning | (53,090) | |||||||||||||||
| Gain (loss) on foreign currency translation | (205) | |||||||||||||||
| Net realized loss on investments | [2] | 48,474 | ||||||||||||||
| Deferred fees and other items | [3] | (4,493) | ||||||||||||||
| Amortization of fees | 9,314 | |||||||||||||||
| Deferred fees/other items, ending | 0 | |||||||||||||||
| Specific CECL Allowance | ||||||||||||||||
| Specific provision for loan loss, beginning | (338,000) | [4] | (342,500) | [5] | ||||||||||||
| Decrease in Specific CECL Allowance | [6] | 338,000 | ||||||||||||||
| Specific provision for loan loss, ending | 0 | [4] | $ (342,500) | [5] | ||||||||||||
| Carry Value, Net | ||||||||||||||||
| Carrying value, beginning balance | 8,812,970 | |||||||||||||||
| Add-on loan fundings | [1] | 373,806 | ||||||||||||||
| Loan repayments | (9,500,444) | |||||||||||||||
| Gain (loss) on foreign currency translation | 5,410 | |||||||||||||||
| Decrease in Specific CECL Allowance | [6] | 338,000 | ||||||||||||||
| Deferred fees and other items | [3] | (4,493) | ||||||||||||||
| Amortization of fees | 13,938 | |||||||||||||||
| Carrying value, ending balance | $ 0 | |||||||||||||||
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