Quarterly report pursuant to Section 13 or 15(d)

Investments - Industry Composition of Investments at Fair Value (Details)

v3.23.3
Investments - Industry Composition of Investments at Fair Value (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Schedule of Investments [Line Items]    
Fair Value $ 7,693,866 $ 5,716,521
% of Total Investments at Fair Value 100.00% 100.00%
Software and Computer Services    
Schedule of Investments [Line Items]    
Fair Value $ 1,262,284 $ 1,158,262
% of Total Investments at Fair Value 16.41% 20.26%
Health Care Providers    
Schedule of Investments [Line Items]    
Fair Value $ 875,820 $ 660,631
% of Total Investments at Fair Value 11.38% 11.56%
Industrial Support Services    
Schedule of Investments [Line Items]    
Fair Value $ 831,694 $ 567,804
% of Total Investments at Fair Value 10.81% 9.93%
Medical Equipment and Services    
Schedule of Investments [Line Items]    
Fair Value $ 616,734 $ 210,831
% of Total Investments at Fair Value 8.02% 3.69%
Media    
Schedule of Investments [Line Items]    
Fair Value $ 603,453 $ 505,035
% of Total Investments at Fair Value 7.84% 8.83%
Consumer Services    
Schedule of Investments [Line Items]    
Fair Value $ 501,162 $ 458,248
% of Total Investments at Fair Value 6.52% 8.02%
Non-life Insurance    
Schedule of Investments [Line Items]    
Fair Value $ 497,961 $ 317,816
% of Total Investments at Fair Value 6.47% 5.56%
Travel and Leisure    
Schedule of Investments [Line Items]    
Fair Value $ 326,088 $ 159,763
% of Total Investments at Fair Value 4.24% 2.79%
Aerospace and Defense    
Schedule of Investments [Line Items]    
Fair Value $ 280,566 $ 169,856
% of Total Investments at Fair Value 3.65% 2.97%
General Industrials    
Schedule of Investments [Line Items]    
Fair Value $ 280,152 $ 265,463
% of Total Investments at Fair Value 3.64% 4.64%
Pharmaceuticals and Biotechnology    
Schedule of Investments [Line Items]    
Fair Value $ 265,305 $ 196,435
% of Total Investments at Fair Value 3.45% 3.44%
Industrial Engineering    
Schedule of Investments [Line Items]    
Fair Value $ 234,209 $ 186,373
% of Total Investments at Fair Value 3.04% 3.26%
Personal Care, Drug and Grocery Stores    
Schedule of Investments [Line Items]    
Fair Value $ 118,029 $ 117,320
% of Total Investments at Fair Value 1.53% 2.05%
Automobiles and Parts    
Schedule of Investments [Line Items]    
Fair Value $ 114,116 $ 118,440
% of Total Investments at Fair Value 1.48% 2.07%
Technology Hardware and Equipment    
Schedule of Investments [Line Items]    
Fair Value $ 96,196 $ 93,161
% of Total Investments at Fair Value 1.25% 1.63%
Food Producers    
Schedule of Investments [Line Items]    
Fair Value $ 94,536 $ 86,977
% of Total Investments at Fair Value 1.23% 1.52%
Investment Banking and Brokerage Services    
Schedule of Investments [Line Items]    
Fair Value $ 90,676 $ 7,606
% of Total Investments at Fair Value 1.18% 0.13%
Electricity    
Schedule of Investments [Line Items]    
Fair Value $ 84,937 $ 8,639
% of Total Investments at Fair Value 1.10% 0.15%
Personal Goods    
Schedule of Investments [Line Items]    
Fair Value $ 76,703 $ 70,050
% of Total Investments at Fair Value 1.00% 1.23%
Telecommunications Service Providers    
Schedule of Investments [Line Items]    
Fair Value $ 71,231 $ 71,695
% of Total Investments at Fair Value 0.93% 1.25%
Retailers    
Schedule of Investments [Line Items]    
Fair Value $ 66,800 $ 20,322
% of Total Investments at Fair Value 0.87% 0.36%
Construction and Materials    
Schedule of Investments [Line Items]    
Fair Value $ 54,152 $ 1,162
% of Total Investments at Fair Value 0.70% 0.03%
Finance and Credit Services    
Schedule of Investments [Line Items]    
Fair Value $ 52,147 $ 48,448
% of Total Investments at Fair Value 0.68% 0.85%
Gas, Water and Multi-utilities    
Schedule of Investments [Line Items]    
Fair Value $ 43,741 $ 43,242
% of Total Investments at Fair Value 0.57% 0.76%
Real Estate Investment and Services    
Schedule of Investments [Line Items]    
Fair Value $ 39,600 $ 44,822
% of Total Investments at Fair Value 0.51% 0.78%
Industrial Transportation    
Schedule of Investments [Line Items]    
Fair Value $ 31,617 $ 50,090
% of Total Investments at Fair Value 0.41% 0.88%
Structured Finance    
Schedule of Investments [Line Items]    
Fair Value $ 29,286 $ 28,737
% of Total Investments at Fair Value 0.38% 0.50%
Telecommunications Equipment    
Schedule of Investments [Line Items]    
Fair Value $ 14,843 $ 6,445
% of Total Investments at Fair Value 0.19% 0.11%
Chemicals    
Schedule of Investments [Line Items]    
Fair Value $ 12,138 $ 6,960
% of Total Investments at Fair Value 0.16% 0.12%
Industrial Metals and Mining    
Schedule of Investments [Line Items]    
Fair Value $ 11,845 $ 2,922
% of Total Investments at Fair Value 0.15% 0.05%
Household Goods and Home Construction    
Schedule of Investments [Line Items]    
Fair Value $ 6,994 $ 17,918
% of Total Investments at Fair Value 0.09% 0.31%
Life Insurance    
Schedule of Investments [Line Items]    
Fair Value $ 5,897 $ 5,628
% of Total Investments at Fair Value 0.08% 0.10%
Leisure Goods    
Schedule of Investments [Line Items]    
Fair Value $ 1,963 $ 8,498
% of Total Investments at Fair Value 0.03% 0.15%
Electronic and Electrical Equipment    
Schedule of Investments [Line Items]    
Fair Value $ 991 $ 922
% of Total Investments at Fair Value 0.01% 0.02%