v3.26.1
Investments - Schedule of Changes in Fair Value of Investments (Details) - Level 3 - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Schedule of Investments [Line Items]        
Fair value, Beginning balance $ 20,240,457 $ 12,785,226 $ 18,656,857 $ 11,204,514
Net realized gains (losses) (14,662) (20,355) (16,751) (15,008)
Net change in unrealized gains (losses) $ (36,164) $ 219,202 $ (339,046) $ 278,329
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Unrealized Gain (Loss) on Investments Unrealized Gain (Loss) on Investments Unrealized Gain (Loss) on Investments Unrealized Gain (Loss) on Investments
Net amortization on investments $ 11,768 $ 7,415 $ 22,930 $ 14,482
Purchases, including capitalized PIK 1,772,647 [1] 3,189,223 [2] 3,745,136 [3] 5,849,368
Sales (1,227,008) [1] (1,632,302) [2] (1,639,132) [3] (2,317,829) [4]
Transfers out of Level 3 (565,208) [5]   (248,164) [6] (465,446) [7]
Fair Value, Ending Balance 20,181,830 14,548,410 20,181,830 14,548,410
Net change in unrealized gains (losses) on Level 3 investments still held $ (35,554) $ 184,739 $ (339,151) $ 229,168
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Unrealized Gain (Loss) on Investments Unrealized Gain (Loss) on Investments Unrealized Gain (Loss) on Investments Unrealized Gain (Loss) on Investments
First Lien Secured Debt        
Schedule of Investments [Line Items]        
Fair value, Beginning balance $ 20,119,100 [8] $ 12,774,315 [9] $ 18,598,394 [10] $ 11,191,530 [11]
Net realized gains (losses) (14,708) [8] 14,149 [9] (16,797) [10] 18,834 [11]
Net change in unrealized gains (losses) (32,594) [8] 179,632 [9] (334,666) [10] 244,376 [11]
Net amortization on investments 11,752 [8] 7,386 [9] 22,836 [10] 14,482 [11]
Purchases, including capitalized PIK 1,760,126 [1],[8] 3,185,808 [2],[9] 3,667,796 [3],[10] 5,845,752 [11]
Sales (1,189,514) [1],[8] (1,626,623) [2],[9] (1,601,638) [3],[10] (2,314,861) [4],[11]
Transfers out of Level 3 (565,208) [5],[8]   (246,971) [6] (465,446) [7],[11]
Fair Value, Ending Balance 20,088,954 [8] 14,534,667 [9],[11] 20,088,954 [8] 14,534,667 [9],[11]
Net change in unrealized gains (losses) on Level 3 investments still held (31,994) [8] 181,862 [9] (334,732) [10] 226,302 [11]
Second Lien Secured Debt        
Schedule of Investments [Line Items]        
Fair value, Beginning balance   3,462 [9]   5,723 [11]
Net realized gains (losses)   (34,504) [9]   (33,842) [11]
Net change in unrealized gains (losses)   36,691 [9]   31,087 [11]
Net amortization on investments [9]   29    
Sales   (5,679) [2],[9]   (2,968) [4],[11]
Unsecured Debt        
Schedule of Investments [Line Items]        
Fair value, Beginning balance 49,435   35,077  
Net change in unrealized gains (losses) 232   128  
Net amortization on investments 16   94  
Purchases, including capitalized PIK 457 [1]   14,841 [3]  
Sales (35,200) [1]   (35,200) [3],[10]  
Fair Value, Ending Balance 14,940   14,940  
Net change in unrealized gains (losses) on Level 3 investments still held 242   89  
Common Equity/Interests        
Schedule of Investments [Line Items]        
Fair value, Beginning balance 60,946 966 15,993 833
Net change in unrealized gains (losses) (3,656) 2,427 (3,006) 2,421
Purchases, including capitalized PIK 11,664 [1] 3,406 [2] 57,160 [3] 3,545
Transfers out of Level 3 [6]     (1,193)  
Fair Value, Ending Balance 68,954 6,799 68,954 6,799
Net change in unrealized gains (losses) on Level 3 investments still held (3,655) 2,427 (3,006) 2,422
Preferred Equity        
Schedule of Investments [Line Items]        
Fair value, Beginning balance 10,976 6,483 7,393 6,428
Net realized gains (losses) 46   46  
Net change in unrealized gains (losses) (146) 451 (1,502) 445
Purchases, including capitalized PIK 400 [1] 9 [2] 5,339 [3] 71
Sales (2,294) [1]   (2,294) [3],[10]  
Fair Value, Ending Balance 8,982 6,944 8,982 6,944
Net change in unrealized gains (losses) on Level 3 investments still held $ (147) $ 450 $ (1,502) $ 444
[1] Includes reorganizations and restructuring of investments.
[2] Includes reorganizations and restructuring of investments.
[3] Includes reorganizations and restructuring of investments.
[4] Includes reorganizations and restructuring of investments.
[5] Transfers out (if any) of Level 3 are due to an increase in the quantity and reliability of broker quotes obtained and transfers into (if any) Level 3 are due to a decrease in the quantity and reliability of broker quotes obtained as assessed by the Adviser. Transfers are assumed to have occurred at the end of the period. There were no transfers between Level 1 and Level 2 fair value measurements during the periods shown.
[6] Transfers out (if any) of Level 3 are due to an increase in the quantity and reliability of broker quotes obtained and transfers into (if any) Level 3 are due to a decrease in the quantity and reliability of broker quotes obtained as assessed by the Adviser. Transfers are assumed to have occurred at the end of the period. There were no transfers between Level 1 and Level 2 fair value measurements during the periods shown.
[7] Transfers out (if any) of Level 3 are due to an increase in the quantity and reliability of broker quotes obtained and transfers into (if any) Level 3 are due to a decrease in the quantity and reliability of broker quotes obtained as assessed by the Adviser. Transfers are assumed to have occurred at the end of the period. There were no transfers between Level 1 and Level 2 fair value measurements during the periods shown.
[8] Includes unfunded commitments measured at fair value of $(59,120).
[9] Includes unfunded commitments measured at fair value of $(46,746).
[10] Includes unfunded commitments measured at fair value of $(59,120).
[11] Includes unfunded commitments measured at fair value of $(46,746).