v3.26.1
Fair Value of Financial Instruments - Schedule of Net Change in Unrealized Gains on Investments (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Net change in unrealized gain (loss) $ (455,174) $ (2,664)
First-lien senior secured debt investments    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Net change in unrealized gain (loss) (184,623) (2,622)
Second-lien senior secured debt investments    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Net change in unrealized gain (loss) (27,178) (1,606)
Unsecured debt investments    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Net change in unrealized gain (loss) (5,397) 2,398
Specialty finance debt investments    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Net change in unrealized gain (loss) 1 (17)
Preferred equity investments    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Net change in unrealized gain (loss) (113,884) (6,151)
Common equity investments    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Net change in unrealized gain (loss) (123,312) 7,008
Specialty finance equity investments    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Net change in unrealized gain (loss) $ (781) $ (1,674)