v3.26.1
Fair Value of Investments - Schedule of Fair Value Hierarchy of Financial Instruments (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Assets at Fair Value    
Investments at fair value $ 4,821,347 [1],[2] $ 4,277,724 [3],[4]
Total financial instruments, at fair value 4,821,840 4,281,276
Liabilities at Fair Value    
Derivative liabilities (9,931)  
Total (9,931) (2,672)
Interest rate swaps/options    
Assets at Fair Value    
Derivative assets 489 3,552
Liabilities at Fair Value    
Derivative liabilities (9,931) (2,666)
Foreign currency forward contracts    
Assets at Fair Value    
Derivative assets 4  
Liabilities at Fair Value    
Derivative liabilities (1) (6)
Levels 1, 2 and 3    
Assets at Fair Value    
Total financial instruments, at fair value 4,686,142 4,177,606
Level 1    
Assets at Fair Value    
Total financial instruments, at fair value 0 0
Liabilities at Fair Value    
Total 0 0
Level 1 | Interest rate swaps/options    
Assets at Fair Value    
Derivative assets 0 0
Liabilities at Fair Value    
Derivative liabilities 0 0
Level 1 | Foreign currency forward contracts    
Assets at Fair Value    
Derivative assets 0  
Liabilities at Fair Value    
Derivative liabilities   0
Level 2    
Assets at Fair Value    
Total financial instruments, at fair value 493 3,552,000
Liabilities at Fair Value    
Total (9,931) (2,672)
Level 2 | Interest rate swaps/options    
Assets at Fair Value    
Derivative assets 489 3,552,000
Liabilities at Fair Value    
Derivative liabilities (9,931) (2,666)
Level 2 | Foreign currency forward contracts    
Assets at Fair Value    
Derivative assets 4  
Liabilities at Fair Value    
Derivative liabilities   (6)
Level 3    
Assets at Fair Value    
Total financial instruments, at fair value 4,685,649 4,174,054
Liabilities at Fair Value    
Total 0 0
Level 3 | Interest rate swaps/options    
Assets at Fair Value    
Derivative assets 0 0
Liabilities at Fair Value    
Derivative liabilities 0 0
Level 3 | Foreign currency forward contracts    
Assets at Fair Value    
Derivative assets 0  
Liabilities at Fair Value    
Derivative liabilities   0
Fair value measured at net asset value    
Assets at Fair Value    
Investments at fair value 135,698 103,670
First lien senior secured debt    
Assets at Fair Value    
Investments at fair value 4,685,584 4,173,995
First lien senior secured debt | Level 1    
Assets at Fair Value    
Investments at fair value 0 0
First lien senior secured debt | Level 2    
Assets at Fair Value    
Investments at fair value 0 0
First lien senior secured debt | Level 3    
Assets at Fair Value    
Investments at fair value 4,685,584 4,173,995
Sponsor subordinated note    
Assets at Fair Value    
Investments at fair value 65 59
Sponsor subordinated note | Level 1    
Assets at Fair Value    
Investments at fair value 0 0
Sponsor subordinated note | Level 2    
Assets at Fair Value    
Investments at fair value 0 0
Sponsor subordinated note | Level 3    
Assets at Fair Value    
Investments at fair value $ 65 $ 59
[1] Unless otherwise indicated, all investments represent co-investments made with the Company’s affiliates in accordance with the terms of the exemptive relief that the Company received from the U.S. Securities and Exchange Commission. Refer to Note 6 for further information.
[2] Unless otherwise indicated, all investments are considered Level 3 investments.
[3] Unless otherwise indicated, all investments are considered Level 3 investments.
[4] Unless otherwise indicated, all investments represent co-investments made with the Company’s affiliates in accordance with the terms of the exemptive relief that the Company received from the U.S. Securities and Exchange Commission. Refer to Note 6 for further information.