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Commercial Mortgage Loans, Subordinate Loans and Other Lending Assets, Net - Schedule of Activity Relating to Loan Portfolio (Details) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Principal Balance |  |  |
Principal value, beginning balance | $ 7,134,992 |  |
New loan fundings | 2,183,157 | $ 955,328 |
Principal value, ending balance | 8,342,902 |  |
Specific CECL Allowance |  |  |
Specific provision for loan loss, beginning | (30,836) |  |
Specific provision for loan loss, ending | (39,257) | (342,500) |
Carry Value, Net |  |  |
Payments to Fund Commercial Mortgage Loans | 2,183,157 | 955,328 |
Realized loss on investment | (7,436) | (128,191) |
General CECL allowance | (39,257) |  | $ (30,836)
Carrying value, net | 8,303,645 |  | $ 7,145,356
Commercial Mortgage and Subordinated Portfolio Segment |  |  |
Principal Balance |  |  |
Principal value, beginning balance | 7,550,410 |  |
New loan fundings | 2,183,157 |  |
Add-on loan fundings | 701,538 |  |
Loan repayments and sale | (2,057,725) |  |
Gain (loss) on foreign currency translation | 353,903 |  |
Realized loss on investment | (7,436) |  |
Amortization of fees | 4,785 |  |
Principal value, ending balance | 8,728,632 |  |
Deferred Fees/Other Items |  |  |
Deferred fees/other items, beginning | (31,718) |  |
Gain (loss) on foreign currency translation | (1,329) |  |
Deferred fees and other items | (36,912) |  |
Amortization of fees | 19,229 |  |
Deferred fees/other items, ending | (50,730) |  |
Specific CECL Allowance |  |  |
Specific provision for loan loss, beginning | (342,500) | $ (193,000) |
Specific provision for loan loss, ending | (335,000) |  |
Carry Value, Net |  |  |
Carrying value, beginning balance | 7,176,192 |  |
Payments to Fund Commercial Mortgage Loans | 2,183,157 |  |
Add-on loan fundings | 701,538 |  |
Loan repayments | (2,057,725) |  |
Gain (loss) on foreign currency translation | 352,574 |  |
Realized loss on investment | (7,436) |  |
Decrease in Specific CECL Allowance | 7,500 |  |
Deferred fees and other items | (36,912) |  |
Amortization of fees | 24,014 |  |
Carrying value, ending balance | $ 8,342,902 |  |

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