v3.26.3
Fair Value Measurements - Schedule of Level 3 Input Reconciliation (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Beginning Balance $ 1,650,735 $ 325,698 $ 1,163,003 $ 0
Transfer in to Level 3 13,911   15,686  
Transfer out of Level 3 (17,611)   (21,102)  
Purchases/Borrowings 110,095 307,132 698,660 646,002
Sales and Settlements/Paydowns (33,124) (13,899) (131,645) (27,722)
Accretion of discount/amortization of premium and paid-in-kind interest 1,085 316 3,233 389
Total net realized and net change in unrealized gain/(loss) on investments (447) 1,017 (3,191) 1,595
Ending Balance 1,724,644 620,264 1,724,644 620,264
First Lien Debt Investments        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Beginning Balance 1,623,107 325,191 1,146,863 0
Transfer in to Level 3 13,911   15,686  
Transfer out of Level 3 (17,611)   (21,102)  
Purchases/Borrowings 110,095 307,029 690,867 645,544
Sales and Settlements/Paydowns (33,124) (13,899) (131,265) (27,722)
Accretion of discount/amortization of premium and paid-in-kind interest 1,067 316 3,215 389
Total net realized and net change in unrealized gain/(loss) on investments (147) 886 (6,966) 1,312
Ending Balance 1,697,298 619,523 1,697,298 619,523
Mezzanine Debt Investments        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Beginning Balance 1,416   0  
Transfer in to Level 3 0   0  
Transfer out of Level 3 0   0  
Purchases/Borrowings 0   1,416  
Sales and Settlements/Paydowns 0   0  
Accretion of discount/amortization of premium and paid-in-kind interest 18   18  
Total net realized and net change in unrealized gain/(loss) on investments 0   0  
Ending Balance 1,434   1,434  
Equity Investments        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Beginning Balance 26,212 507 16,140 0
Transfer in to Level 3 0   0  
Transfer out of Level 3 0   0  
Purchases/Borrowings 0 103 6,377 458
Sales and Settlements/Paydowns 0 0 (380) 0
Accretion of discount/amortization of premium and paid-in-kind interest 0 0 0 0
Total net realized and net change in unrealized gain/(loss) on investments (300) 131 3,775 283
Ending Balance $ 25,912 $ 741 $ 25,912 $ 741