v3.26.3
FINANCIAL HIGHLIGHTS - Schedule of Financial Highlights (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 1 Months Ended 9 Months Ended
Sep. 30, 2026
Aug. 31, 2026
Jul. 31, 2026
Jun. 30, 2026
May 31, 2026
Apr. 30, 2026
Mar. 31, 2026
Feb. 28, 2026
Jan. 31, 2026
Dec. 31, 2025
Sep. 30, 2025
Aug. 31, 2025
Jul. 31, 2025
Jun. 30, 2025
May 31, 2025
Apr. 30, 2025
Mar. 31, 2025
Feb. 28, 2025
Dec. 31, 2024
Sep. 30, 2026
Sep. 30, 2025
Investment Company, Financial Highlights [Roll Forward]                                          
Common shares outstanding (in shares) 371,457                 382,315                   371,457  
Ratio/Supplemental Data:                                          
Net assets at end of period $ 9,915,863     $ 10,210,923           $ 10,506,044 $ 10,161,971     $ 8,423,680         $ 5,900,696 $ 9,915,863 $ 10,161,971
Class I                                          
Investment Company, Financial Highlights [Roll Forward]                                          
Net asset value, beginning of period (in dollars per share) $ 26.74 $ 26.67 $ 26.71 $ 27.00 $ 26.95 $ 26.85 $ 26.86 $ 27.26 $ 27.48   $ 27.50 $ 27.55 $ 27.51 $ 27.42 $ 27.27 $ 27.36 $ 27.47 $ 27.60   $ 27.48 $ 27.61
Net investment income for period (in dollars per share)                                       1.85 1.75
Net realized and unrealized losses for period (in dollars per share)                                       (0.71) 0.14
Net increase in net assets resulting from operations (in dollars per share)                                       1.14 1.89
Distributions from net investment income and Distributions to shareholders (in dollars per share)                                       (1.93) (1.92)
Total decrease in net assets (in dollars per share)                                       (0.79) (0.03)
Net asset value, end of period (in dollars per share) $ 26.69 26.74 26.67 26.71 27.00 26.95 26.85 26.86 27.26 $ 27.48 $ 27.58 27.50 27.55 27.51 27.42 27.27 27.36 27.47 $ 27.61 $ 26.69 $ 27.58
Total return based on net asset value                                       4.33% 7.13%
Common shares outstanding (in shares) 290,924                 305,450 296,655                 290,924 296,655
Ratio/Supplemental Data:                                          
Net assets at end of period $ 7,766,064                 $ 8,393,572 $ 8,180,579                 $ 7,766,064 $ 8,180,579
Ratio of operating expenses (excluding expense support and recoupment) to average net assets                                       9.08% 8.00%
Ratio of operating expenses (including expense support and recoupment) to average net assets                                       9.66% 7.38%
Ratio of net investment income to average net assets                                       9.10% 8.50%
Portfolio turnover rate                                       40.00% 39.00%
Class S                                          
Investment Company, Financial Highlights [Roll Forward]                                          
Net asset value, beginning of period (in dollars per share) $ 26.74 26.67 26.71 27.00 26.95 26.85 26.86 27.26 27.48   $ 27.50 27.55 27.51 27.42 27.27 27.36 27.47 27.60   $ 27.48 $ 27.61
Net investment income for period (in dollars per share)                                       1.68 1.58
Net realized and unrealized losses for period (in dollars per share)                                       (0.71) 0.14
Net increase in net assets resulting from operations (in dollars per share)                                       0.97 1.72
Distributions from net investment income and Distributions to shareholders (in dollars per share)                                       (1.76) (1.75)
Total decrease in net assets (in dollars per share)                                       (0.79) (0.03)
Net asset value, end of period (in dollars per share) $ 26.69 26.74 26.67 26.71 27.00 26.95 26.85 26.86 27.26 $ 27.48 $ 27.58 27.50 27.55 27.51 27.42 27.27 27.36 27.47 27.61 $ 26.69 $ 27.58
Total return based on net asset value                                       3.67% 6.45%
Common shares outstanding (in shares) 49,632                 47,452 44,495                 49,632 44,495
Ratio/Supplemental Data:                                          
Net assets at end of period $ 1,324,904                 $ 1,304,117 $ 1,227,021                 $ 1,324,904 $ 1,227,021
Ratio of operating expenses (excluding expense support and recoupment) to average net assets                                       10.03% 8.84%
Ratio of operating expenses (including expense support and recoupment) to average net assets                                       10.63% 8.22%
Ratio of net investment income to average net assets                                       8.31% 7.64%
Portfolio turnover rate                                       40.00% 39.00%
Class D                                          
Investment Company, Financial Highlights [Roll Forward]                                          
Net asset value, beginning of period (in dollars per share) $ 26.74 26.67 26.71 27.00 26.95 26.85 26.86 27.26 27.48   $ 27.50 27.55 27.51 27.42 27.27 27.36 27.47 27.60   $ 27.48 $ 27.61
Net investment income for period (in dollars per share)                                       1.80 1.71
Net realized and unrealized losses for period (in dollars per share)                                       (0.71) 0.14
Net increase in net assets resulting from operations (in dollars per share)                                       1.09 1.85
Distributions from net investment income and Distributions to shareholders (in dollars per share)                                       (1.88) (1.88)
Total decrease in net assets (in dollars per share)                                       (0.79) (0.03)
Net asset value, end of period (in dollars per share) $ 26.69 $ 26.74 $ 26.67 $ 26.71 $ 27.00 $ 26.95 $ 26.85 $ 26.86 $ 27.26 $ 27.48 $ 27.58 $ 27.50 $ 27.55 $ 27.51 $ 27.42 $ 27.27 $ 27.36 $ 27.47 $ 27.61 $ 26.69 $ 27.58
Total return based on net asset value                                       4.13% 6.93%
Common shares outstanding (in shares) 30,901                 29,413 27,351                 30,901 27,351
Ratio/Supplemental Data:                                          
Net assets at end of period $ 824,895                 $ 808,355 $ 754,371                 $ 824,895 $ 754,371
Ratio of operating expenses (excluding expense support and recoupment) to average net assets                                       9.39% 8.30%
Ratio of operating expenses (including expense support and recoupment) to average net assets                                       9.98% 7.66%
Ratio of net investment income to average net assets                                       8.87% 8.23%
Portfolio turnover rate                                       40.00% 39.00%