v3.25.2
Consolidated Schedule of Investments
€ in Thousands, ¥ in Thousands, £ in Thousands, $ in Thousands, $ in Thousands
Jun. 30, 2025
USD ($)
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Jun. 30, 2025
EUR (€)
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Jun. 30, 2025
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Jun. 30, 2025
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Jun. 30, 2025
JPY (¥)
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Sep. 30, 2024
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Sep. 30, 2024
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Sep. 30, 2024
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Jun. 30, 2024
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Sep. 30, 2023
USD ($)
Schedule of Investments [Line Items]                    
Investment, cost $ 3,012,589         $ 3,144,919        
Investments at fair value $ 2,809,377         $ 3,021,279        
Money market funds, at carrying value, percentage of net assets           5.30% 5.30% 5.30%    
Investment owned, percent of net assets (as a percent) 190.28% 190.28% 190.28% 190.28% 190.28% 203.07% 203.07% 203.07%    
Money market funds, at carrying value $ 79,799         $ 78,543        
Total investment owned, at cost and money market funds, at carrying value 3,092,388         3,223,462        
Total investment owned, at fair value and money market funds, at carrying value $ 2,889,176         $ 3,099,822        
Money market funds, percent of net assets (as a percent) 5.40% 5.40% 5.40% 5.40% 5.40% 5.30% 5.30% 5.30%   208.30%
Control investments                    
Schedule of Investments [Line Items]                    
Investment, principal $ 222,619               $ 214,029  
Investment, cost [1],[2] 377,134         $ 372,901        
Investments at fair value $ 230,697 [1],[2]         $ 289,404 [1],[2]     $ 299,072 $ 297,091
Investment owned, percent of net assets (as a percent) 15.60% 15.60% 15.60% 15.60% 15.60% 19.50% 19.50% 19.50% 20.00%  
Affiliate Investments                    
Schedule of Investments [Line Items]                    
Investment, principal $ 54,741               $ 36,404  
Investment, cost [3] 59,044         $ 38,175        
Investments at fair value $ 55,978 [3]         $ 35,677 [3]     $ 35,396 23,349
Investment owned, percent of net assets (as a percent) 3.80% 3.80% 3.80% 3.80% 3.80% 2.40% 2.40% 2.40% 2.40%  
Non-control/Non-affiliate investments                    
Schedule of Investments [Line Items]                    
Investment, cost $ 2,576,411 [4]         $ 2,733,843        
Investments at fair value $ 2,522,702 [4]         $ 2,696,198        
Investment owned, percent of net assets (as a percent) 170.90% 170.90% 170.90% 170.90% 170.90% 181.20% 181.20% 181.20%    
Investment, Identifier [Axis]: 107 Fair Street LLC, Real Estate Development, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, interest rate (as a percent) [5],[6],[7],[8]           13.00% 13.00% 13.00%    
Investment, principal [5],[6],[8],[9]           $ 1,989        
Investment, cost [5],[6],[8]           1,985        
Investments at fair value [5],[6],[8]           $ 1,934        
Investment, Identifier [Axis]: 107-109 Beech OAK22 LLC, Real Estate Development, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, interest rate (as a percent) 11.00% [10],[11],[12] 11.00% [10],[11],[12] 11.00% [10],[11],[12] 11.00% [10],[11],[12] 11.00% [10],[11],[12] 11.00% [5],[6],[7] 11.00% [5],[6],[7] 11.00% [5],[6],[7]    
Investment, principal $ 16,173 [10],[11],[13]         $ 31,231 [5],[6],[9]        
Investment, cost 16,006 [10],[11]         30,920 [5],[6]        
Investments at fair value $ 16,098 [10],[11]         $ 31,015 [5],[6]        
Investment, Identifier [Axis]: 112-126 Van Houten Real22 LLC, Real Estate Development, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, interest rate (as a percent) [5],[6],[7],[8]           13.00% 13.00% 13.00%    
Investment, principal [5],[6],[8],[9]           $ 5,336        
Investment, cost [5],[6],[8]           5,332        
Investments at fair value [5],[6],[8]           $ 5,288        
Investment, Identifier [Axis]: 1261229 BC LTD, Pharmaceuticals, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [14],[15] 6.25% 6.25% 6.25% 6.25% 6.25%          
Investment, interest rate (as a percent) [12],[14],[15] 10.56% 10.56% 10.56% 10.56% 10.56%          
Investment, principal [13],[14],[15] $ 19,600                  
Investment, cost [14],[15] 19,130                  
Investments at fair value [14],[15] $ 18,946                  
Investment, Identifier [Axis]: 1261229 BC LTD, Pharmaceuticals, Fixed Rate Bond                    
Schedule of Investments [Line Items]                    
Investment, interest rate (as a percent) [12],[14] 10.00% 10.00% 10.00% 10.00% 10.00%          
Investment, principal [13],[14] $ 9,100                  
Investment, cost [14] 9,100                  
Investments at fair value [14] $ 9,186                  
Investment, Identifier [Axis]: A.T. Holdings II Ltd., Biotechnology, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, interest rate (as a percent) 5.97% [10],[12],[14],[16] 5.97% [10],[12],[14],[16] 5.97% [10],[12],[14],[16] 5.97% [10],[12],[14],[16] 5.97% [10],[12],[14],[16] 14.25% [6],[7],[17],[18] 14.25% [6],[7],[17],[18] 14.25% [6],[7],[17],[18]    
Investment, interest rate, paid in kind (as a percent) [10],[14],[16] 8.28% 8.28% 8.28% 8.28% 8.28%          
Investment, principal $ 23,083 [10],[13],[14],[16]         $ 21,870 [6],[9],[17],[18]        
Investment, cost 22,365 [10],[14],[16]         21,024 [6],[17],[18]        
Investments at fair value $ 22,621 [10],[14],[16]         $ 21,979 [6],[17],[18]        
Investment, Identifier [Axis]: A.T. Holdings II SÀRL, Biotechnology, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, interest rate, paid in kind (as a percent) 22.50% [10],[14],[19] 22.50% [10],[14],[19] 22.50% [10],[14],[19] 22.50% [10],[14],[19] 22.50% [10],[14],[19] 22.50% [6],[17],[20] 22.50% [6],[17],[20] 22.50% [6],[17],[20]    
Investment, principal $ 7,152 [10],[13],[14],[19]         $ 7,835 [6],[9],[17],[20]        
Investment, cost 5,400 [10],[14],[19]         7,028 [6],[17],[20]        
Investments at fair value $ 7,116 [10],[14],[19]         $ 7,796 [6],[17],[20]        
Investment, Identifier [Axis]: ACESO Holding 4 S.A.R.L., Health Care Services, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.75% [10],[14],[15] 5.75% [10],[14],[15] 5.75% [10],[14],[15] 5.75% [10],[14],[15] 5.75% [10],[14],[15] 5.75% [5],[6],[17],[21] 5.75% [5],[6],[17],[21] 5.75% [5],[6],[17],[21]    
Investment, interest rate (as a percent) [10],[12],[14],[15] 7.74% 7.74% 7.74% 7.74% 7.74%          
Investment, principal   € 4,204 [10],[13],[14],[15]       $ 0 [5],[6],[9],[17],[21]        
Investment, cost $ 4,838 [10],[14],[15]         (47) [5],[6],[17],[21]        
Investments at fair value $ 4,871 [10],[14],[15]         $ (47) [5],[6],[17],[21]        
Investment, Identifier [Axis]: ACESO Holding 4 S.A.R.L., Health Care Services, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.75% [10],[14],[15] 5.75% [10],[14],[15] 5.75% [10],[14],[15] 5.75% [10],[14],[15] 5.75% [10],[14],[15] 5.75% [6],[17],[21] 5.75% [6],[17],[21] 5.75% [6],[17],[21]    
Investment, interest rate (as a percent) 8.13% [10],[12],[14],[15] 8.13% [10],[12],[14],[15] 8.13% [10],[12],[14],[15] 8.13% [10],[12],[14],[15] 8.13% [10],[12],[14],[15] 8.91% [6],[7],[17],[21] 8.91% [6],[7],[17],[21] 8.91% [6],[7],[17],[21]    
Investment, principal $ 16,817 [10],[13],[14],[15]           € 16,817 [6],[9],[17],[21]      
Investment, cost 18,435 [10],[14],[15]         $ 18,424 [6],[17],[21]        
Investments at fair value $ 19,484 [10],[14],[15]         $ 18,393 [6],[17],[21]        
Investment, Identifier [Axis]: ACESO Holding 4 S.A.R.L., Health Care Services, First Lien Term Loan 3                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[14],[15] 5.75% 5.75% 5.75% 5.75% 5.75%          
Investment, interest rate (as a percent) [10],[12],[14],[15] 7.74% 7.74% 7.74% 7.74% 7.74%          
Investment, principal [10],[13],[14],[15] $ 12,405                  
Investment, cost [10],[14],[15] 14,246                  
Investments at fair value [10],[14],[15] $ 14,372                  
Investment, Identifier [Axis]: ADB Companies, LLC, Construction & Engineering, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 7.50% [10],[15] 7.50% [10],[15] 7.50% [10],[15] 7.50% [10],[15] 7.50% [10],[15] 6.50% [6],[21] 6.50% [6],[21] 6.50% [6],[21]    
Investment, interest rate (as a percent) 11.06% [10],[12],[15] 11.06% [10],[12],[15] 11.06% [10],[12],[15] 11.06% [10],[12],[15] 11.06% [10],[12],[15] 11.37% [6],[7],[21] 11.37% [6],[7],[21] 11.37% [6],[7],[21]    
Investment, interest rate, paid in kind (as a percent) [10],[15] 1.00% 1.00% 1.00% 1.00% 1.00%          
Investment, principal $ 2,807 [10],[13],[15]         $ 3,079 [6],[9],[21]        
Investment, cost 2,801 [10],[15]         3,062 [6],[21]        
Investments at fair value $ 2,708 [10],[15]         $ 2,955 [6],[21]        
Investment, Identifier [Axis]: ADB Companies, LLC, Construction & Engineering, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 7.50% [10],[15] 7.50% [10],[15] 7.50% [10],[15] 7.50% [10],[15] 7.50% [10],[15] 6.50% [6],[21] 6.50% [6],[21] 6.50% [6],[21]    
Investment, interest rate (as a percent) 11.06% [10],[12],[15] 11.06% [10],[12],[15] 11.06% [10],[12],[15] 11.06% [10],[12],[15] 11.06% [10],[12],[15] 12.01% [6],[7],[21] 12.01% [6],[7],[21] 12.01% [6],[7],[21]    
Investment, interest rate, paid in kind (as a percent) [10],[15] 1.00% 1.00% 1.00% 1.00% 1.00%          
Investment, principal $ 803 [10],[13],[15]         $ 875 [6],[9],[21]        
Investment, cost 800 [10],[15]         868 [6],[21]        
Investments at fair value $ 775 [10],[15]         $ 840 [6],[21]        
Investment, Identifier [Axis]: ADB Companies, LLC, Construction & Engineering, First Lien Term Loan 3                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 7.50% [10],[15] 7.50% [10],[15] 7.50% [10],[15] 7.50% [10],[15] 7.50% [10],[15] 6.50% [6],[21] 6.50% [6],[21] 6.50% [6],[21]    
Investment, interest rate (as a percent) 11.06% [10],[12],[15] 11.06% [10],[12],[15] 11.06% [10],[12],[15] 11.06% [10],[12],[15] 11.06% [10],[12],[15] 11.37% [6],[7],[21] 11.37% [6],[7],[21] 11.37% [6],[7],[21]    
Investment, interest rate, paid in kind (as a percent) [10],[15] 1.00% 1.00% 1.00% 1.00% 1.00%          
Investment, principal $ 14,676 [10],[13],[15]         $ 16,053 [6],[9],[21]        
Investment, cost 14,649 [10],[15]         15,975 [6],[21]        
Investments at fair value $ 14,162 [10],[15]         $ 15,410 [6],[21]        
Investment, Identifier [Axis]: ADC Therapeutics SA, Biotechnology, Common Stock                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 1,674,030 [14] 1,674,030 [14] 1,674,030 [14] 1,674,030 [14] 1,674,030 [14] 1,674,030 [17] 1,674,030 [17] 1,674,030 [17]    
Investment, cost $ 0 [14]         $ 0 [17]        
Investments at fair value $ 0 [14]         $ 0 [17]        
Investment, Identifier [Axis]: ADC Therapeutics SA, Biotechnology, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 7.50% [10],[14],[15] 7.50% [10],[14],[15] 7.50% [10],[14],[15] 7.50% [10],[14],[15] 7.50% [10],[14],[15] 7.50% [6],[17],[21] 7.50% [6],[17],[21] 7.50% [6],[17],[21]    
Investment, interest rate (as a percent) 11.95% [10],[12],[14],[15] 11.95% [10],[12],[14],[15] 11.95% [10],[12],[14],[15] 11.95% [10],[12],[14],[15] 11.95% [10],[12],[14],[15] 12.25% [6],[7],[17],[21] 12.25% [6],[7],[17],[21] 12.25% [6],[7],[17],[21]    
Investment, principal $ 6,589 [10],[13],[14],[15]         $ 6,589 [6],[9],[17],[21]        
Investment, cost 6,389 [10],[14],[15]         6,353 [6],[17],[21]        
Investments at fair value $ 6,490 [10],[14],[15]         $ 6,424 [6],[17],[21]        
Investment, Identifier [Axis]: ADC Therapeutics SA, Biotechnology, Warrants                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 28,948 [10],[14] 28,948 [10],[14] 28,948 [10],[14] 28,948 [10],[14] 28,948 [10],[14] 28,948 [6],[17] 28,948 [6],[17] 28,948 [6],[17]    
Investment, cost $ 174 [10],[14]         $ 174 [6],[17]        
Investments at fair value $ 19 [10],[14]         $ 33 [6],[17]        
Investment, Identifier [Axis]: AIP RD Buyer Corp., Distributors, Common Stock                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 17,870 [10] 17,870 [10] 17,870 [10] 17,870 [10] 17,870 [10] 17,870 [6] 17,870 [6] 17,870 [6]    
Investment, cost $ 1,733 [10]         $ 1,733 [6]        
Investments at fair value $ 2,837 [10]         $ 2,220 [6]        
Investment, Identifier [Axis]: ASP Integrity Acquisition Co LLC, Diversified Support Services, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[11],[15] 4.00% 4.00% 4.00% 4.00% 4.00%          
Investment, interest rate (as a percent) [10],[11],[12],[15] 11.50% 11.50% 11.50% 11.50% 11.50%          
Investment, principal [10],[11],[13],[15] $ 126                  
Investment, cost [10],[11],[15] 86                  
Investments at fair value [10],[11],[15] $ 37                  
Investment, Identifier [Axis]: ASP Integrity Acquisition Co LLC, Diversified Support Services, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[15] 5.00% 5.00% 5.00% 5.00% 5.00%          
Investment, interest rate (as a percent) [10],[12],[15] 9.32% 9.32% 9.32% 9.32% 9.32%          
Investment, principal [10],[13],[15] $ 15,086                  
Investment, cost [10],[15] 14,870                  
Investments at fair value [10],[15] $ 14,612                  
Investment, Identifier [Axis]: ASP Integrity Acquisition Co LLC, Diversified Support Services, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[11],[15] 5.00% 5.00% 5.00% 5.00% 5.00%          
Investment, principal [10],[11],[13],[15] $ 0                  
Investment, cost [10],[11],[15] (18)                  
Investments at fair value [10],[11],[15] $ (79)                  
Investment, Identifier [Axis]: ASP-R-PAC Acquisition Co LLC, Paper & Plastic Packaging Products & Materials, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 6.00% [10],[11],[14],[15] 6.00% [10],[11],[14],[15] 6.00% [10],[11],[14],[15] 6.00% [10],[11],[14],[15] 6.00% [10],[11],[14],[15] 6.00% [5],[6],[17],[21] 6.00% [5],[6],[17],[21] 6.00% [5],[6],[17],[21]    
Investment, interest rate (as a percent) 10.44% [10],[11],[12],[14],[15] 10.44% [10],[11],[12],[14],[15] 10.44% [10],[11],[12],[14],[15] 10.44% [10],[11],[12],[14],[15] 10.44% [10],[11],[12],[14],[15] 11.29% [5],[6],[7],[17],[21] 11.29% [5],[6],[7],[17],[21] 11.29% [5],[6],[7],[17],[21]    
Investment, principal $ 226 [10],[11],[13],[14],[15]         $ 230 [5],[6],[9],[17],[21]        
Investment, cost 218 [10],[11],[14],[15]         220 [5],[6],[17],[21]        
Investments at fair value $ 219 [10],[11],[14],[15]         $ 211 [5],[6],[17],[21]        
Investment, Identifier [Axis]: ASP-R-PAC Acquisition Co LLC, Paper & Plastic Packaging Products & Materials, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [6],[17],[21]           6.00% 6.00% 6.00%    
Investment, interest rate (as a percent) [6],[7],[17],[21]           10.66% 10.66% 10.66%    
Investment, principal [6],[9],[17],[21]           $ 3,243        
Investment, cost [6],[17],[21]           3,234        
Investments at fair value [6],[17],[21]           $ 3,087        
Investment, Identifier [Axis]: ASP-R-PAC Acquisition Co LLC, Paper & Plastic Packaging Products & Materials, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[14],[15] 6.00% 6.00% 6.00% 6.00% 6.00%          
Investment, interest rate (as a percent) [10],[12],[14],[15] 10.54% 10.54% 10.54% 10.54% 10.54%          
Investment, principal [10],[13],[14],[15] $ 3,218                  
Investment, cost [10],[14],[15] 3,214                  
Investments at fair value [10],[14],[15] $ 3,166                  
Investment, Identifier [Axis]: ASP-R-PAC Acquisition Co LLC, Paper & Plastic Packaging Products & Materials, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[14],[15] 6.00% 6.00% 6.00% 6.00% 6.00%          
Investment, interest rate (as a percent) [10],[12],[14],[15] 10.28% 10.28% 10.28% 10.28% 10.28%          
Investment, principal [10],[13],[14],[15] $ 667                  
Investment, cost [10],[14],[15] 662                  
Investments at fair value [10],[14],[15] 657                  
Investment, Identifier [Axis]: ATNX SPV, LLC, Pharmaceuticals, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, interest rate, paid in kind (as a percent) [6],[17],[18]           15.89% 15.89% 15.89%    
Investment, principal 13,768 [10],[13],[14],[16]         $ 12,989 [6],[9],[17],[18]        
Investment, cost 13,783 [10],[14],[16]         13,013 [6],[17],[18]        
Investments at fair value $ 13,631 [10],[14],[16]         $ 12,892 [6],[17],[18]        
Investment, Identifier [Axis]: AVSC Holding Corp., Specialized Consumer Services, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[11],[15] 5.00% 5.00% 5.00% 5.00% 5.00%          
Investment, principal [10],[11],[13],[15] $ 0                  
Investment, cost [10],[11],[15] (107)                  
Investments at fair value [10],[11],[15] $ (108)                  
Investment, Identifier [Axis]: AVSC Holding Corp., Specialized Consumer Services, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[15] 5.00% 5.00% 5.00% 5.00% 5.00%          
Investment, interest rate (as a percent) [10],[12],[15] 9.33% 9.33% 9.33% 9.33% 9.33%          
Investment, principal [10],[13],[15] $ 56,067                  
Investment, cost [10],[15] 55,037                  
Investments at fair value [10],[15] $ 55,030                  
Investment, Identifier [Axis]: Access CIG, LLC, Diversified Support Services, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [21]           5.00% 5.00% 5.00%    
Investment, interest rate (as a percent) [7],[21]           10.25% 10.25% 10.25%    
Investment, principal [9],[21]           $ 1,985        
Investment, cost [21]           1,975        
Investments at fair value [21]           $ 1,996        
Investment, Identifier [Axis]: Accession Risk Management Group, Inc., Insurance Brokers, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 4.75% [10],[11],[15] 4.75% [10],[11],[15] 4.75% [10],[11],[15] 4.75% [10],[11],[15] 4.75% [10],[11],[15] 4.75% [5],[6],[21] 4.75% [5],[6],[21] 4.75% [5],[6],[21]    
Investment, principal $ 0 [10],[11],[13],[15]         $ 0 [5],[6],[9],[21]        
Investment, cost (5) [10],[11],[15]         (5) [5],[6],[21]        
Investments at fair value $ 0 [10],[11],[15]         $ (5) [5],[6],[21]        
Investment, Identifier [Axis]: Accession Risk Management Group, Inc., Insurance Brokers, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [5],[6],[21]           4.75% 4.75% 4.75%    
Investment, principal [5],[6],[9],[21]           $ 0        
Investment, cost [5],[6],[21]           (48)        
Investments at fair value [5],[6],[21]           $ (45)        
Investment, Identifier [Axis]: Accession Risk Management Group, Inc., Insurance Brokers, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[11],[15] 4.75% 4.75% 4.75% 4.75% 4.75%          
Investment, interest rate (as a percent) [10],[11],[12],[15] 9.05% 9.05% 9.05% 9.05% 9.05%          
Investment, principal [10],[11],[13],[15] $ 587                  
Investment, cost [10],[11],[15] 563                  
Investments at fair value [10],[11],[15] $ 587                  
Investment, Identifier [Axis]: Accession Risk Management Group, Inc., Insurance Brokers, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[15] 4.75% 4.75% 4.75% 4.75% 4.75%          
Investment, interest rate (as a percent) [10],[12],[15] 9.05% 9.05% 9.05% 9.05% 9.05%          
Investment, principal [10],[13],[15] $ 4,133                  
Investment, cost [10],[15] 4,133                  
Investments at fair value [10],[15] $ 4,133                  
Investment, Identifier [Axis]: Accupac, Inc., Personal Care Products, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [5],[6],[21]           6.00% 6.00% 6.00%    
Investment, interest rate (as a percent) [5],[6],[7],[21]           10.90% 10.90% 10.90%    
Investment, principal [5],[6],[9],[21]           $ 2,482        
Investment, cost [5],[6],[21]           2,471        
Investments at fair value [5],[6],[21]           $ 2,443        
Investment, Identifier [Axis]: Accupac, Inc., Personal Care Products, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [5],[6],[21]           6.00% 6.00% 6.00%    
Investment, principal [5],[6],[9],[21]           $ 0        
Investment, cost [5],[6],[21]           (2)        
Investments at fair value [5],[6],[21]           $ (59)        
Investment, Identifier [Axis]: Accupac, Inc., Personal Care Products, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [6],[21]           6.00% 6.00% 6.00%    
Investment, interest rate (as a percent) [6],[7],[21]           10.90% 10.90% 10.90%    
Investment, principal [6],[9],[21]           $ 20,024        
Investment, cost [6],[21]           19,978        
Investments at fair value [6],[21]           $ 19,724        
Investment, Identifier [Axis]: Acquia Inc., Application Software, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 7.00% [10],[15] 7.00% [10],[15] 7.00% [10],[15] 7.00% [10],[15] 7.00% [10],[15] 7.00% [5],[6],[21] 7.00% [5],[6],[21] 7.00% [5],[6],[21]    
Investment, interest rate (as a percent) 11.43% [10],[12],[15] 11.43% [10],[12],[15] 11.43% [10],[12],[15] 11.43% [10],[12],[15] 11.43% [10],[12],[15] 12.47% [5],[6],[7],[21] 12.47% [5],[6],[7],[21] 12.47% [5],[6],[7],[21]    
Investment, principal $ 2,709 [10],[13],[15]         $ 1,084 [5],[6],[9],[21]        
Investment, cost 2,703 [10],[15]         1,078 [5],[6],[21]        
Investments at fair value $ 2,709 [10],[15]         $ 1,084 [5],[6],[21]        
Investment, Identifier [Axis]: Acquia Inc., Application Software, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 7.00% [10],[15] 7.00% [10],[15] 7.00% [10],[15] 7.00% [10],[15] 7.00% [10],[15] 7.00% [6],[21] 7.00% [6],[21] 7.00% [6],[21]    
Investment, interest rate (as a percent) 11.41% [10],[12],[15] 11.41% [10],[12],[15] 11.41% [10],[12],[15] 11.41% [10],[12],[15] 11.41% [10],[12],[15] 12.46% [6],[7],[21] 12.46% [6],[7],[21] 12.46% [6],[7],[21]    
Investment, principal $ 6,400 [10],[13],[15]         $ 6,400 [6],[9],[21]        
Investment, cost 6,389 [10],[15]         6,366 [6],[21]        
Investments at fair value $ 6,400 [10],[15]         $ 6,400 [6],[21]        
Investment, Identifier [Axis]: Acquia Inc., Application Software, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 7.00% [10],[15] 7.00% [10],[15] 7.00% [10],[15] 7.00% [10],[15] 7.00% [10],[15] 7.00% [6],[21] 7.00% [6],[21] 7.00% [6],[21]    
Investment, interest rate (as a percent) 11.41% [10],[12],[15] 11.41% [10],[12],[15] 11.41% [10],[12],[15] 11.41% [10],[12],[15] 11.41% [10],[12],[15] 12.46% [6],[7],[21] 12.46% [6],[7],[21] 12.46% [6],[7],[21]    
Investment, principal $ 25,332 [10],[13],[15]         $ 25,332 [6],[9],[21]        
Investment, cost 25,300 [10],[15]         25,309 [6],[21]        
Investments at fair value $ 25,332 [10],[15]         $ 25,332 [6],[21]        
Investment, Identifier [Axis]: AirStrip Technologies, Inc., Application Software, Warrants                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares [6]           5,715 5,715 5,715    
Investment, cost [6]           $ 90        
Investments at fair value [6]           $ 0        
Investment, Identifier [Axis]: All Web Leads, Inc., Advertising, Common Stock                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 11,499 [10] 11,499 [10] 11,499 [10] 11,499 [10] 11,499 [10] 11,499 [6] 11,499 [6] 11,499 [6] 11,499  
Investment, principal $ 0               $ 0  
Investment, cost 1,622 [10]         $ 1,622 [6]        
Investments at fair value $ 1,622 [10]         $ 1,622 [6]     $ 1,622 0
Investment owned, percent of net assets (as a percent) 0.10% 0.10% 0.10% 0.10% 0.10%       0.10%  
Investment, Identifier [Axis]: All Web Leads, Inc., Advertising, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 4.00% [10],[11],[15] 4.00% [10],[11],[15] 4.00% [10],[11],[15] 4.00% [10],[11],[15] 4.00% [10],[11],[15] 4.00% [5],[6],[21] 4.00% [5],[6],[21] 4.00% [5],[6],[21] 4.00%  
Investment, interest rate (as a percent) 8.40% [10],[11],[12],[15] 8.40% [10],[11],[12],[15] 8.40% [10],[11],[12],[15] 8.40% [10],[11],[12],[15] 8.40% [10],[11],[12],[15] 8.70% [5],[6],[7],[21] 8.70% [5],[6],[7],[21] 8.70% [5],[6],[7],[21] 9.34%  
Investment, principal $ 1,440 [10],[11],[13],[15]         $ 1,560 [5],[6],[9],[21]     $ 1,560  
Investment, cost 1,420 [10],[11],[15]         1,520 [5],[6],[21]        
Investments at fair value $ 1,386 [10],[11],[15]         $ 1,506 [5],[6],[21]     $ 1,506 0
Investment owned, percent of net assets (as a percent) 0.10% 0.10% 0.10% 0.10% 0.10%       0.10%  
Investment, Identifier [Axis]: All Web Leads, Inc., Advertising, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 4.00% [10],[15] 4.00% [10],[15] 4.00% [10],[15] 4.00% [10],[15] 4.00% [10],[15] 4.00% [6],[21] 4.00% [6],[21] 4.00% [6],[21] 4.00%  
Investment, interest rate (as a percent) 6.40% [10],[12],[15] 6.40% [10],[12],[15] 6.40% [10],[12],[15] 6.40% [10],[12],[15] 6.40% [10],[12],[15] 6.70% [6],[7],[21] 6.70% [6],[7],[21] 6.70% [6],[7],[21] 7.34%  
Investment, interest rate, paid in kind (as a percent) 2.00% [10],[15] 2.00% [10],[15] 2.00% [10],[15] 2.00% [10],[15] 2.00% [10],[15] 2.00% [6],[21] 2.00% [6],[21] 2.00% [6],[21] 2.00%  
Investment, principal $ 1,811 [10],[13],[15]         $ 1,819 [6],[9],[21]     $ 1,809  
Investment, cost 1,773 [10],[15]         1,757 [6],[21]        
Investments at fair value $ 1,733 [10],[15]         $ 1,741 [6],[21]     $ 1,731 0
Investment owned, percent of net assets (as a percent) 0.10% 0.10% 0.10% 0.10% 0.10%       0.10%  
Investment, Identifier [Axis]: All Web Leads, Inc., Advertising, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.00% [10],[15] 5.00% [10],[15] 5.00% [10],[15] 5.00% [10],[15] 5.00% [10],[15] 5.00% [6],[21] 5.00% [6],[21] 5.00% [6],[21] 5.00%  
Investment, interest rate (as a percent) 7.40% [10],[12],[15] 7.40% [10],[12],[15] 7.40% [10],[12],[15] 7.40% [10],[12],[15] 7.40% [10],[12],[15] 7.70% [6],[7],[21] 7.70% [6],[7],[21] 7.70% [6],[7],[21] 8.34%  
Investment, interest rate, paid in kind (as a percent) 2.00% [10],[15] 2.00% [10],[15] 2.00% [10],[15] 2.00% [10],[15] 2.00% [10],[15] 2.00% [6],[21] 2.00% [6],[21] 2.00% [6],[21] 2.00%  
Investment, principal $ 3,693 [10],[13],[15]         $ 3,637 [6],[9],[21]     $ 3,602  
Investment, cost 3,592 [10],[15]         3,493 [6],[21]        
Investments at fair value $ 3,515 [10],[15]         $ 3,463 [6],[21]     $ 3,429 0
Investment owned, percent of net assets (as a percent) 0.20% 0.20% 0.20% 0.20% 0.20%       0.20%  
Investment, Identifier [Axis]: All Web Leads, Inc., Advertising, First Lien Term Loan 3                    
Schedule of Investments [Line Items]                    
Investment, interest rate, paid in kind (as a percent) 10.00% [10],[19] 10.00% [10],[19] 10.00% [10],[19] 10.00% [10],[19] 10.00% [10],[19] 10.00% [6],[20] 10.00% [6],[20] 10.00% [6],[20] 10.00%  
Investment, principal $ 3,816 [10],[13],[19]         $ 3,541 [6],[9],[20]     $ 3,451  
Investment, cost 3,027 [10],[19]         3,026 [6],[20]        
Investments at fair value $ 3,264 [10],[19]         $ 3,183 [6],[20]     $ 3,102 0
Investment owned, percent of net assets (as a percent) 0.20% 0.20% 0.20% 0.20% 0.20%       0.20%  
Investment, Identifier [Axis]: Alto Pharmacy Holdings, Inc., Health Care Technology, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [6],[21]           11.50% 11.50% 11.50%    
Investment, interest rate (as a percent) [6],[7],[21]           8.00% 8.00% 8.00%    
Investment, interest rate, paid in kind (as a percent) [6],[21]           8.93% 8.93% 8.93%    
Investment, principal [6],[9],[21]           $ 10,134        
Investment, cost [6],[21]           9,666        
Investments at fair value [6],[21]           $ 9,120        
Investment, Identifier [Axis]: Alto Pharmacy Holdings, Inc., Health Care Technology, Warrants                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares [6]           598,283 598,283 598,283    
Investment, cost [6]           $ 642        
Investments at fair value [6]           $ 802        
Investment, Identifier [Axis]: Alvogen Pharma US, Inc., Pharmaceuticals, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [6],[21]           7.50% 7.50% 7.50%    
Investment, interest rate (as a percent) [6],[7],[21]           12.45% 12.45% 12.45%    
Investment, principal [6],[9],[21]           $ 16,143        
Investment, cost [6],[21]           16,115        
Investments at fair value [6],[21]           $ 14,852        
Investment, Identifier [Axis]: Alvogen Pharma US, Inc., Pharmaceuticals, Second Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[15] 10.50% 10.50% 10.50% 10.50% 10.50%          
Investment, interest rate (as a percent) [10],[12],[15] 6.80% 6.80% 6.80% 6.80% 6.80%          
Investment, interest rate, paid in kind (as a percent) [10],[15] 8.00% 8.00% 8.00% 8.00% 8.00%          
Investment, principal [10],[13],[15] $ 2,708                  
Investment, cost [10],[15] 2,706                  
Investments at fair value [10],[15] $ 2,667                  
Investment, Identifier [Axis]: Alvotech Holdings S.A., Biotechnology, Common Stock 1                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 76,023 [14] 76,023 [14] 76,023 [14] 76,023 [14] 76,023 [14] 118,744 [17] 118,744 [17] 118,744 [17]    
Investment, cost $ 76 [14]         $ 206 [17]        
Investments at fair value $ 693 [14]         $ 1,413 [17]        
Investment, Identifier [Axis]: Alvotech Holdings S.A., Biotechnology, Common Stock 2                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 70,820 [10],[14],[22] 70,820 [10],[14],[22] 70,820 [10],[14],[22] 70,820 [10],[14],[22] 70,820 [10],[14],[22] 70,820 [6],[17],[23] 70,820 [6],[17],[23] 70,820 [6],[17],[23]    
Investment, cost $ 283 [10],[14],[22]         $ 283 [6],[17],[23]        
Investments at fair value $ 244 [10],[14],[22]         $ 315 [6],[17],[23]        
Investment, Identifier [Axis]: American Auto Auction Group, LLC, Diversified Support Services, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [21]           5.00% 5.00% 5.00%    
Investment, interest rate (as a percent) [7],[21]           9.75% 9.75% 9.75%    
Investment, principal [9],[21]           $ 2,487        
Investment, cost [21]           2,469        
Investments at fair value [21]           $ 2,501        
Investment, Identifier [Axis]: American Auto Auction Group, LLC, Diversified Support Services, Second Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [6],[21]           8.75% 8.75% 8.75%    
Investment, interest rate (as a percent) [6],[7],[21]           13.50% 13.50% 13.50%    
Investment, principal [6],[9],[21]           $ 17,048        
Investment, cost [6],[21]           16,556        
Investments at fair value [6],[21]           $ 16,494        
Investment, Identifier [Axis]: American Money Management Corporation, Multi-Sector Holdings, CLO Notes                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [14],[15] 5.15% 5.15% 5.15% 5.15% 5.15%          
Investment, interest rate (as a percent) [12],[14],[15] 9.42% 9.42% 9.42% 9.42% 9.42%          
Investment, principal [13],[14],[15] $ 3,500                  
Investment, cost [14],[15] 3,500                  
Investments at fair value [14],[15] $ 3,483                  
Investment, Identifier [Axis]: Amspec Parent LLC, Diversified Support Services, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [5],[6],[21]           5.50% 5.50% 5.50%    
Investment, principal [5],[6],[9],[21]           $ 0        
Investment, cost [5],[6],[21]           (98)        
Investments at fair value [5],[6],[21]           $ 0        
Investment, Identifier [Axis]: Amspec Parent LLC, Diversified Support Services, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [6],[21]           5.50% 5.50% 5.50%    
Investment, interest rate (as a percent) [6],[7],[21]           10.10% 10.10% 10.10%    
Investment, principal [6],[9],[21]           $ 33,390        
Investment, cost [6],[21]           32,654        
Investments at fair value [6],[21]           $ 33,390        
Investment, Identifier [Axis]: Amspec Parent LLC, Diversified Support Services, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [5],[6],[21]           5.50% 5.50% 5.50%    
Investment, principal [5],[6],[9],[21]           $ 0        
Investment, cost [5],[6],[21]           (60)        
Investments at fair value [5],[6],[21]           $ 0        
Investment, Identifier [Axis]: Anchorage Capital CLO 20, LTD., Multi-Sector Holdings, CLO Notes                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [17],[21]           7.61% 7.61% 7.61%    
Investment, interest rate (as a percent) [7],[17],[21]           12.89% 12.89% 12.89%    
Investment, principal [9],[17],[21]           $ 750        
Investment, cost [17],[21]           715        
Investments at fair value [17],[21]           $ 736        
Investment, Identifier [Axis]: Arches Buyer Inc., Interactive Media & Services, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.50% [10],[15] 5.50% [10],[15] 5.50% [10],[15] 5.50% [10],[15] 5.50% [10],[15] 5.50% [6],[21] 5.50% [6],[21] 5.50% [6],[21]    
Investment, interest rate (as a percent) 9.83% [10],[12],[15] 9.83% [10],[12],[15] 9.83% [10],[12],[15] 9.83% [10],[12],[15] 9.83% [10],[12],[15] 10.35% [6],[7],[21] 10.35% [6],[7],[21] 10.35% [6],[7],[21]    
Investment, principal $ 47,212 [10],[13],[15]         $ 47,451 [6],[9],[21]        
Investment, cost 46,775 [10],[15]         46,877 [6],[21]        
Investments at fair value $ 47,212 [10],[15]         $ 47,428 [6],[21]        
Investment, Identifier [Axis]: Ares XLIV CLO, Multi-Sector Holdings, CLO Notes                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 7.13% [14],[15] 7.13% [14],[15] 7.13% [14],[15] 7.13% [14],[15] 7.13% [14],[15] 7.13% [17],[21] 7.13% [17],[21] 7.13% [17],[21]    
Investment, interest rate (as a percent) 11.39% [12],[14],[15] 11.39% [12],[14],[15] 11.39% [12],[14],[15] 11.39% [12],[14],[15] 11.39% [12],[14],[15] 12.43% [7],[17],[21] 12.43% [7],[17],[21] 12.43% [7],[17],[21]    
Investment, principal $ 3,500 [13],[14],[15]         $ 3,500 [9],[17],[21]        
Investment, cost 3,404 [14],[15]         3,399 [17],[21]        
Investments at fair value $ 3,523 [14],[15]         $ 3,509 [17],[21]        
Investment, Identifier [Axis]: Assembled Brands Capital LLC, Specialized Finance, Common Stock                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 12,463,242 [10] 12,463,242 [10] 12,463,242 [10] 12,463,242 [10] 12,463,242 [10] 12,463,242 [6] 12,463,242 [6] 12,463,242 [6] 12,463,242  
Investment, cost $ 1,963 [10]         $ 1,963 [6]        
Investments at fair value $ 1,496 [10]         $ 1,246 [6]     $ 1,246 89
Investment owned, percent of net assets (as a percent) 0.10% 0.10% 0.10% 0.10% 0.10%       0.10%  
Investment, Identifier [Axis]: Assembled Brands Capital LLC, Specialized Finance, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investments at fair value                 $ 0 21,823
Investment owned, percent of net assets (as a percent)                 0.00%  
Investment, Identifier [Axis]: Assembled Brands Capital LLC, Specialized Finance, Preferred Equity                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares                  
Investments at fair value                 $ 0 1,005
Investment owned, percent of net assets (as a percent)                 0.00%  
Investment, Identifier [Axis]: Assembled Brands Capital LLC, Specialized Finance, Warrants                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 78,045 [10] 78,045 [10] 78,045 [10] 78,045 [10] 78,045 [10] 78,045 [6] 78,045 [6] 78,045 [6] 78,045  
Investment, cost $ 0 [10]         $ 0 [6]        
Investments at fair value $ 0 [10]         $ 0 [6]     $ 0 0
Investment owned, percent of net assets (as a percent) 0.00% 0.00% 0.00% 0.00% 0.00%       0.00%  
Investment, Identifier [Axis]: Astra Acquisition Corp., Application Software, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 6.75% [10],[15],[19] 6.75% [10],[15],[19] 6.75% [10],[15],[19] 6.75% [10],[15],[19] 6.75% [10],[15],[19] 6.75% [21] 6.75% [21] 6.75% [21]    
Investment, interest rate (as a percent) [7],[21]           11.35% 11.35% 11.35%    
Investment, principal $ 8,836 [10],[13],[15],[19]         $ 7,907 [9],[21]        
Investment, cost 8,368 [10],[15],[19]         7,816 [21]        
Investments at fair value $ 4,197 [10],[15],[19]         $ 6,555 [21]        
Investment, Identifier [Axis]: Astra Acquisition Corp., Application Software, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.25% [10],[15],[19] 5.25% [10],[15],[19] 5.25% [10],[15],[19] 5.25% [10],[15],[19] 5.25% [10],[15],[19] 5.25% [6],[20],[21] 5.25% [6],[20],[21] 5.25% [6],[20],[21]    
Investment, principal $ 12,537 [10],[13],[15],[19]         $ 12,537 [6],[9],[20],[21]        
Investment, cost 9,872 [10],[15],[19]         10,187 [6],[20],[21]        
Investments at fair value $ 0 [10],[15],[19]         $ 3,605 [6],[20],[21]        
Investment, Identifier [Axis]: Asurion, LLC, Property & Casualty Insurance, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [15] 4.25% 4.25% 4.25% 4.25% 4.25%          
Investment, interest rate (as a percent) [12],[15] 8.68% 8.68% 8.68% 8.68% 8.68%          
Investment, principal [13],[15] $ 19,898                  
Investment, cost [15] 19,856                  
Investments at fair value [15] $ 19,715                  
Investment, Identifier [Axis]: Aurelia Netherlands B.V., Interactive Media & Services, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[14],[15] 4.75% 4.75% 4.75% 4.75% 4.75%          
Investment, interest rate (as a percent) [10],[12],[14],[15] 6.83% 6.83% 6.83% 6.83% 6.83%          
Investment, principal | € [10],[13],[14],[15]   € 47,682                
Investment, cost [10],[14],[15] $ 53,198                  
Investments at fair value [10],[14],[15] $ 55,832                  
Investment, Identifier [Axis]: Aurelia Netherlands Midco 2 B.V., Interactive Media & Services, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [6],[17],[21]           5.75% 5.75% 5.75%    
Investment, interest rate (as a percent) [6],[7],[17],[21]           9.55% 9.55% 9.55%    
Investment, principal | € [6],[9],[17],[21]             € 28,022      
Investment, cost [6],[17],[21]           $ 29,727        
Investments at fair value [6],[17],[21]           $ 30,698        
Investment, Identifier [Axis]: Aurora Lux Finco S.À.R.L., Airport Services, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 6.00% [10],[14],[15] 6.00% [10],[14],[15] 6.00% [10],[14],[15] 6.00% [10],[14],[15] 6.00% [10],[14],[15] 7.00% [6],[17],[21] 7.00% [6],[17],[21] 7.00% [6],[17],[21]    
Investment, interest rate (as a percent) 10.40% [10],[12],[14],[15] 10.40% [10],[12],[14],[15] 10.40% [10],[12],[14],[15] 10.40% [10],[12],[14],[15] 10.40% [10],[12],[14],[15] 7.70% [6],[7],[17],[21] 7.70% [6],[7],[17],[21] 7.70% [6],[7],[17],[21]    
Investment, interest rate, paid in kind (as a percent) [10],[14],[15] [10],[14],[15] [10],[14],[15] [10],[14],[15] [10],[14],[15] 4.00% [6],[17],[21] 4.00% [6],[17],[21] 4.00% [6],[17],[21]    
Investment, principal $ 31,348 [10],[13],[14],[15]         $ 30,724 [6],[9],[17],[21]        
Investment, cost 31,190 [10],[14],[15]         30,169 [6],[17],[21]        
Investments at fair value $ 30,753 [10],[14],[15]         $ 29,802 [6],[17],[21]        
Investment, Identifier [Axis]: Avalara, Inc., Application Software, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [5],[6],[21]           6.25% 6.25% 6.25%    
Investment, principal [5],[6],[9],[21]           $ 0        
Investment, cost [5],[6],[21]           (86)        
Investments at fair value [5],[6],[21]           $ 0        
Investment, Identifier [Axis]: Avalara, Inc., Application Software, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [6],[21]           6.25% 6.25% 6.25%    
Investment, interest rate (as a percent) [6],[7],[21]           10.85% 10.85% 10.85%    
Investment, principal [6],[9],[21]           $ 50,470        
Investment, cost [6],[21]           49,836        
Investments at fair value [6],[21]           $ 50,470        
Investment, Identifier [Axis]: BAART Programs, Inc., Health Care Services, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.00% [10],[15] 5.00% [10],[15] 5.00% [10],[15] 5.00% [10],[15] 5.00% [10],[15] 5.00% [6],[21] 5.00% [6],[21] 5.00% [6],[21]    
Investment, interest rate (as a percent) 9.56% [10],[12],[15] 9.56% [10],[12],[15] 9.56% [10],[12],[15] 9.56% [10],[12],[15] 9.56% [10],[12],[15] 9.87% [6],[7],[21] 9.87% [6],[7],[21] 9.87% [6],[7],[21]    
Investment, principal $ 3,189 [10],[13],[15]         $ 3,214 [6],[9],[21]        
Investment, cost 3,159 [10],[15]         3,183 [6],[21]        
Investments at fair value $ 2,817 [10],[15]         $ 3,025 [6],[21]        
Investment, Identifier [Axis]: BAART Programs, Inc., Health Care Services, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.00% [10],[15] 5.00% [10],[15] 5.00% [10],[15] 5.00% [10],[15] 5.00% [10],[15] 5.00% [6],[21] 5.00% [6],[21] 5.00% [6],[21]    
Investment, interest rate (as a percent) 9.56% [10],[12],[15] 9.56% [10],[12],[15] 9.56% [10],[12],[15] 9.56% [10],[12],[15] 9.56% [10],[12],[15] 9.87% [6],[7],[21] 9.87% [6],[7],[21] 9.87% [6],[7],[21]    
Investment, principal $ 1,239 [10],[13],[15]         $ 1,248 [6],[9],[21]        
Investment, cost 1,243 [10],[15]         1,254 [6],[21]        
Investments at fair value $ 1,094 [10],[15]         $ 1,175 [6],[21]        
Investment, Identifier [Axis]: BAART Programs, Inc., Health Care Services, Second Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 8.50% [10],[15],[19] 8.50% [10],[15],[19] 8.50% [10],[15],[19] 8.50% [10],[15],[19] 8.50% [10],[15],[19] 8.50% [6],[21] 8.50% [6],[21] 8.50% [6],[21]    
Investment, interest rate (as a percent) [6],[7],[21]           13.35% 13.35% 13.35%    
Investment, principal $ 6,452 [10],[13],[15],[19]         $ 6,452 [6],[9],[21]        
Investment, cost 6,386 [10],[15],[19]         6,386 [6],[21]        
Investments at fair value $ 3,678 [10],[15],[19]         $ 5,550 [6],[21]        
Investment, Identifier [Axis]: BAART Programs, Inc., Health Care Services, Second Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 8.50% [10],[15],[19] 8.50% [10],[15],[19] 8.50% [10],[15],[19] 8.50% [10],[15],[19] 8.50% [10],[15],[19] 8.50% [6],[21] 8.50% [6],[21] 8.50% [6],[21]    
Investment, interest rate (as a percent) [6],[7],[21]           13.37% 13.37% 13.37%    
Investment, principal $ 8,920 [10],[13],[15],[19]         $ 8,920 [6],[9],[21]        
Investment, cost 8,817 [10],[15],[19]         8,817 [6],[21]        
Investments at fair value $ 5,084 [10],[15],[19]         $ 7,673 [6],[21]        
Investment, Identifier [Axis]: BOTA BIDCO GMBH, Diversified Chemicals, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[14],[15] 4.00% 4.00% 4.00% 4.00% 4.00%          
Investment, interest rate (as a percent) [10],[12],[14],[15] 5.93% 5.93% 5.93% 5.93% 5.93%          
Investment, principal | € [10],[13],[14],[15]   € 4,057                
Investment, cost [10],[14],[15] $ 3,981                  
Investments at fair value [10],[14],[15] $ 4,589                  
Investment, Identifier [Axis]: BOTA BIDCO GMBH, Diversified Chemicals, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[14],[15] 4.50% 4.50% 4.50% 4.50% 4.50%          
Investment, interest rate (as a percent) [10],[12],[14],[15] 6.48% 6.48% 6.48% 6.48% 6.48%          
Investment, principal [10],[13],[14],[15] $ 16,260                  
Investment, cost [10],[14],[15] 15,939                  
Investments at fair value [10],[14],[15] $ 18,071                  
Investment, Identifier [Axis]: Barracuda Parent, LLC, Systems Software, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[15] 6.50% 6.50% 6.50% 6.50% 6.50%          
Investment, interest rate (as a percent) [10],[12],[15] 10.78% 10.78% 10.78% 10.78% 10.78%          
Investment, principal [10],[13],[15] $ 15,448                  
Investment, cost [10],[15] 15,014                  
Investments at fair value [10],[15] $ 15,040                  
Investment, Identifier [Axis]: Berner Food & Beverage, LLC, Soft Drinks & Non-alcoholic Beverages, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [5],[6],[21] 5.50% [5],[6],[21] 5.50% [5],[6],[21]    
Investment, interest rate (as a percent) 13.00% [10],[11],[12],[15] 13.00% [10],[11],[12],[15] 13.00% [10],[11],[12],[15] 13.00% [10],[11],[12],[15] 13.00% [10],[11],[12],[15] 10.52% [5],[6],[7],[21] 10.52% [5],[6],[7],[21] 10.52% [5],[6],[7],[21]    
Investment, principal $ 1,076 [10],[11],[13],[15]         $ 2,835 [5],[6],[9],[21]        
Investment, cost 1,063 [10],[11],[15]         2,813 [5],[6],[21]        
Investments at fair value $ 1,034 [10],[11],[15]         $ 2,811 [5],[6],[21]        
Investment, Identifier [Axis]: Berner Food & Beverage, LLC, Soft Drinks & Non-alcoholic Beverages, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [6],[21]           5.50% 5.50% 5.50%    
Investment, interest rate (as a percent) [6],[7],[21]           10.90% 10.90% 10.90%    
Investment, principal [6],[9],[21]           $ 40,246        
Investment, cost [6],[21]           40,085        
Investments at fair value [6],[21]           $ 39,863        
Investment, Identifier [Axis]: Berner Food & Beverage, LLC, Soft Drinks & Non-alcoholic Beverages, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[15] 6.50% 6.50% 6.50% 6.50% 6.50%          
Investment, interest rate (as a percent) [10],[12],[15] 10.93% 10.93% 10.93% 10.93% 10.93%          
Investment, principal [10],[13],[15] $ 39,934                  
Investment, cost [10],[15] 39,817                  
Investments at fair value [10],[15] $ 39,283                  
Investment, Identifier [Axis]: Berner Food & Beverage, LLC, Soft Drinks & Non-alcoholic Beverages, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[15] 6.50% 6.50% 6.50% 6.50% 6.50%          
Investment, interest rate (as a percent) [10],[12],[15] 10.93% 10.93% 10.93% 10.93% 10.93%          
Investment, principal [10],[13],[15] $ 4,379                  
Investment, cost [10],[15] 4,344                  
Investments at fair value [10],[15] $ 4,307                  
Investment, Identifier [Axis]: BioXcel Therapeutics, Inc., Pharmaceuticals, Common Stock                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares [14] 26,654 26,654 26,654 26,654 26,654          
Investment, cost [14] $ 0                  
Investments at fair value [14] $ 48                  
Investment, Identifier [Axis]: BioXcel Therapeutics, Inc., Pharmaceuticals, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [5],[6],[17],[21]           7.50% 7.50% 7.50%    
Investment, interest rate (as a percent) 3.00% [10],[12],[14] 3.00% [10],[12],[14] 3.00% [10],[12],[14] 3.00% [10],[12],[14] 3.00% [10],[12],[14] [5],[6],[7],[17],[21] [5],[6],[7],[17],[21] [5],[6],[7],[17],[21]    
Investment, interest rate, paid in kind (as a percent) [10],[14] 10.00% 10.00% 10.00% 10.00% 10.00%          
Investment, principal $ 3,084 [10],[13],[14]         $ 0 [5],[6],[9],[17],[21]        
Investment, cost 3,082 [10],[14]         0 [5],[6],[17],[21]        
Investments at fair value $ 2,698 [10],[14]         $ 0 [5],[6],[17],[21]        
Investment, Identifier [Axis]: BioXcel Therapeutics, Inc., Pharmaceuticals, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [6],[17],[21]           7.50% 7.50% 7.50%    
Investment, interest rate (as a percent) 3.00% [10],[12],[14] 3.00% [10],[12],[14] 3.00% [10],[12],[14] 3.00% [10],[12],[14] 3.00% [10],[12],[14] 8.00% [6],[7],[17],[21] 8.00% [6],[7],[17],[21] 8.00% [6],[7],[17],[21]    
Investment, interest rate, paid in kind (as a percent) 10.00% [10],[14] 10.00% [10],[14] 10.00% [10],[14] 10.00% [10],[14] 10.00% [10],[14] 4.10% [6],[17],[21] 4.10% [6],[17],[21] 4.10% [6],[17],[21]    
Investment, principal $ 7,439 [10],[13],[14]         $ 2,930 [6],[9],[17],[21]        
Investment, cost 7,341 [10],[14]         2,928 [6],[17],[21]        
Investments at fair value $ 6,509 [10],[14]         $ 2,600 [6],[17],[21]        
Investment, Identifier [Axis]: BioXcel Therapeutics, Inc., Pharmaceuticals, First Lien Term Loan 3                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [6],[17],[21]           7.50% 7.50% 7.50%    
Investment, interest rate (as a percent) 3.00% [10],[11],[12],[14] 3.00% [10],[11],[12],[14] 3.00% [10],[11],[12],[14] 3.00% [10],[11],[12],[14] 3.00% [10],[11],[12],[14] 8.00% [6],[7],[17],[21] 8.00% [6],[7],[17],[21] 8.00% [6],[7],[17],[21]    
Investment, interest rate, paid in kind (as a percent) 10.00% [10],[11],[14] 10.00% [10],[11],[14] 10.00% [10],[11],[14] 10.00% [10],[11],[14] 10.00% [10],[11],[14] 4.10% [6],[17],[21] 4.10% [6],[17],[21] 4.10% [6],[17],[21]    
Investment, principal $ 0 [10],[11],[13],[14]         $ 7,062 [6],[9],[17],[21]        
Investment, cost 0 [10],[11],[14]         6,921 [6],[17],[21]        
Investments at fair value $ 0 [10],[11],[14]         $ 6,268 [6],[17],[21]        
Investment, Identifier [Axis]: BioXcel Therapeutics, Inc., Pharmaceuticals, First Lien Term Loan 4                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [5],[6],[17],[21]           7.50% 7.50% 7.50%    
Investment, interest rate (as a percent) [10],[11],[12],[14] 3.00% 3.00% 3.00% 3.00% 3.00%          
Investment, interest rate, paid in kind (as a percent) [10],[11],[14] 10.00% 10.00% 10.00% 10.00% 10.00%          
Investment, principal $ 0 [10],[11],[13],[14]         $ 0 [5],[6],[9],[17],[21]        
Investment, cost 0 [10],[11],[14]         0 [5],[6],[17],[21]        
Investments at fair value $ 0 [10],[11],[14]         $ 0 [5],[6],[17],[21]        
Investment, Identifier [Axis]: BioXcel Therapeutics, Inc., Pharmaceuticals, First Lien Term Loan 5                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [5],[6],[17],[21]           7.50% 7.50% 7.50%    
Investment, principal [5],[6],[9],[17],[21]           $ 0        
Investment, cost [5],[6],[17],[21]           0        
Investments at fair value [5],[6],[17],[21]           $ 0        
Investment, Identifier [Axis]: BioXcel Therapeutics, Inc., Pharmaceuticals, Warrants 1                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 2,041 [10],[14] 2,041 [10],[14] 2,041 [10],[14] 2,041 [10],[14] 2,041 [10],[14] 32,664 [6],[17] 32,664 [6],[17] 32,664 [6],[17]    
Investment, cost $ 225 [10],[14]         $ 225 [6],[17]        
Investments at fair value $ 2 [10],[14]         $ 10 [6],[17]        
Investment, Identifier [Axis]: BioXcel Therapeutics, Inc., Pharmaceuticals, Warrants 2                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 586 [10],[14] 586 [10],[14] 586 [10],[14] 586 [10],[14] 586 [10],[14] 9,382 [6],[17] 9,382 [6],[17] 9,382 [6],[17]    
Investment, cost $ 0 [10],[14]         $ 0 [6],[17]        
Investments at fair value $ 1 [10],[14]         $ 3 [6],[17]        
Investment, Identifier [Axis]: Blackhawk Network Holdings, Inc., Data Processing & Outsourced Services, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [21]           5.00% 5.00% 5.00%    
Investment, interest rate (as a percent) [7],[21]           9.85% 9.85% 9.85%    
Investment, principal [9],[21]           $ 19,336        
Investment, cost [21]           18,991        
Investments at fair value [21]           $ 19,444        
Investment, Identifier [Axis]: Blumenthal Temecula, LLC, Automotive Retail, Common Stock                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 394,297 [10],[24] 394,297 [10],[24] 394,297 [10],[24] 394,297 [10],[24] 394,297 [10],[24] 394,297 [6] 394,297 [6] 394,297 [6]    
Investment, cost $ 424 [10],[24]         $ 424 [6]        
Investments at fair value $ 63 [10],[24]         $ 79 [6]        
Investment, Identifier [Axis]: Blumenthal Temecula, LLC, Automotive Retail, Preferred Equity 1                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 1,708,618 [10] 1,708,618 [10] 1,708,618 [10] 1,708,618 [10] 1,708,618 [10] 1,708,618 [6] 1,708,618 [6] 1,708,618 [6]    
Investment, cost $ 1,711 [10]         $ 1,711 [6]        
Investments at fair value $ 2,409 [10]         $ 2,136 [6]        
Investment, Identifier [Axis]: Blumenthal Temecula, LLC, Automotive Retail, Preferred Equity 2                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 394,297 [10] 394,297 [10] 394,297 [10] 394,297 [10] 394,297 [10] 394,297 [6] 394,297 [6] 394,297 [6]    
Investment, cost $ 395 [10]         $ 395 [6]        
Investments at fair value $ 528 [10]         $ 477 [6]        
Investment, Identifier [Axis]: C5 Technology Holdings, LLC, Data Processing & Outsourced Services, Common Stock                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 829 [10] 829 [10] 829 [10] 829 [10] 829 [10] 829 [6] 829 [6] 829 [6] 829  
Investment, cost $ 0 [10]         $ 0 [6]        
Investments at fair value $ 0 [10]         $ 0 [6]     $ 0 0
Investment owned, percent of net assets (as a percent) 0.00% 0.00% 0.00% 0.00% 0.00%       0.00%  
Investment, Identifier [Axis]: C5 Technology Holdings, LLC, Data Processing & Outsourced Services, Preferred Equity                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 34,984,460 [10] 34,984,460 [10] 34,984,460 [10] 34,984,460 [10] 34,984,460 [10] 34,984,460 [6] 34,984,460 [6] 34,984,460 [6] 34,984,460  
Investment, cost $ 34,984 [10]         $ 34,984 [6]        
Investments at fair value $ 25,889 [10]         $ 27,638 [6]     $ 27,638 27,638
Investment owned, percent of net assets (as a percent) 1.80% 1.80% 1.80% 1.80% 1.80%       1.80%  
Investment, Identifier [Axis]: CBAM 2017-2, LTD., Multi-Sector Holdings, CLO Notes                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 7.36% [14],[15] 7.36% [14],[15] 7.36% [14],[15] 7.36% [14],[15] 7.36% [14],[15] 7.36% [17],[21] 7.36% [17],[21] 7.36% [17],[21]    
Investment, interest rate (as a percent) 11.64% [12],[14],[15] 11.64% [12],[14],[15] 11.64% [12],[14],[15] 11.64% [12],[14],[15] 11.64% [12],[14],[15] 12.65% [7],[17],[21] 12.65% [7],[17],[21] 12.65% [7],[17],[21]    
Investment, principal $ 489 [13],[14],[15]         $ 489 [9],[17],[21]        
Investment, cost 460 [14],[15]         458 [17],[21]        
Investments at fair value $ 485 [14],[15]         $ 462 [17],[21]        
Investment, Identifier [Axis]: CD&R Firefly Bidco Limited, Other Specialty Retail, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [17],[21]           5.75% 5.75% 5.75%    
Investment, interest rate (as a percent) [7],[17],[21]           10.95% 10.95% 10.95%    
Investment, principal | £ [9],[17],[21]               £ 14,807    
Investment, cost [17],[21]           $ 18,480        
Investments at fair value [17],[21]           $ 19,878        
Investment, Identifier [Axis]: CD&R Firefly Bidco Limited, Other Specialty Retail, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [17],[21]           5.50% 5.50% 5.50%    
Investment, interest rate (as a percent) [7],[17],[21]           10.45% 10.45% 10.45%    
Investment, principal [9],[17],[21]           $ 14,725        
Investment, cost [17],[21]           18,330        
Investments at fair value [17],[21]           $ 19,782        
Investment, Identifier [Axis]: CIELO BIDCO LIMITED, Building Products, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[11],[14],[15] 4.75% 4.75% 4.75% 4.75% 4.75%          
Investment, principal [10],[11],[13],[14],[15] $ 0                  
Investment, cost [10],[11],[14],[15] 0                  
Investments at fair value [10],[11],[14],[15] $ 0                  
Investment, Identifier [Axis]: CIELO BIDCO LIMITED, Building Products, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[11],[14],[15] 4.75% 4.75% 4.75% 4.75% 4.75%          
Investment, principal [10],[11],[13],[14],[15] $ 0                  
Investment, cost [10],[11],[14],[15] 0                  
Investments at fair value [10],[11],[14],[15] $ 0                  
Investment, Identifier [Axis]: CIELO BIDCO LIMITED, Building Products, First Lien Term Loan 3                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [11],[14],[15] 4.75% 4.75% 4.75% 4.75% 4.75%          
Investment, principal [11],[13],[14],[15] $ 0                  
Investment, cost [11],[14],[15] 0                  
Investments at fair value [11],[14],[15] $ 0                  
Investment, Identifier [Axis]: Caregiver Services, Inc., Health Care Services, Preferred Equity                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 1,080,398 1,080,398 1,080,398 1,080,398 1,080,398 1,080,398 [6] 1,080,398 [6] 1,080,398 [6] 1,080,398  
Investment, cost [6]           $ 875        
Investments at fair value $ 0         $ 594 [6]     $ 227 432
Investment owned, percent of net assets (as a percent) 0.00% 0.00% 0.00% 0.00% 0.00%       0.00%  
Investment, Identifier [Axis]: Carlyle Global Market Strategies, Multi-Sector Holdings, CLO Notes                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [14],[15] 7.50% 7.50% 7.50% 7.50% 7.50%          
Investment, interest rate (as a percent) [12],[14],[15] 11.77% 11.77% 11.77% 11.77% 11.77%          
Investment, principal [13],[14],[15] $ 3,575                  
Investment, cost [14],[15] 3,733                  
Investments at fair value [14],[15] $ 3,668                  
Investment, Identifier [Axis]: Centralsquare Technologies, LLC, Application Software, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [10],[11],[15] 6.00% [5],[6],[21] 6.00% [5],[6],[21] 6.00% [5],[6],[21]    
Investment, principal $ 0 [10],[11],[13],[15]         $ 0 [5],[6],[9],[21]        
Investment, cost (29) [10],[11],[15]         (33) [5],[6],[21]        
Investments at fair value $ (2) [10],[11],[15]         $ (15) [5],[6],[21]        
Investment, Identifier [Axis]: Centralsquare Technologies, LLC, Application Software, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 6.00% [10],[15] 6.00% [10],[15] 6.00% [10],[15] 6.00% [10],[15] 6.00% [10],[15] 6.50% [6],[21] 6.50% [6],[21] 6.50% [6],[21]    
Investment, interest rate (as a percent) 7.07% [10],[12],[15] 7.07% [10],[12],[15] 7.07% [10],[12],[15] 7.07% [10],[12],[15] 7.07% [10],[12],[15] 8.10% [6],[7],[21] 8.10% [6],[7],[21] 8.10% [6],[7],[21]    
Investment, interest rate, paid in kind (as a percent) 3.25% [10],[15] 3.25% [10],[15] 3.25% [10],[15] 3.25% [10],[15] 3.25% [10],[15] 3.50% [6],[21] 3.50% [6],[21] 3.50% [6],[21]    
Investment, principal $ 13,079 [10],[13],[15]         $ 12,830 [6],[9],[21]        
Investment, cost 12,829 [10],[15]         12,539 [6],[21]        
Investments at fair value $ 13,059 [10],[15]         $ 12,694 [6],[21]        
Investment, Identifier [Axis]: Connect Finco SARL, Alternative Carriers, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [14],[15] 4.50% 4.50% 4.50% 4.50% 4.50%          
Investment, interest rate (as a percent) [12],[14],[15] 8.83% 8.83% 8.83% 8.83% 8.83%          
Investment, principal [13],[14],[15] $ 9,948                  
Investment, cost [14],[15] 8,805                  
Investments at fair value [14],[15] $ 9,483                  
Investment, Identifier [Axis]: Continental Intermodal Group LP, Oil & Gas Storage & Transportation, Common Stock                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 22,267,661 [10] 22,267,661 [10] 22,267,661 [10] 22,267,661 [10] 22,267,661 [10] 22,267,661 [6] 22,267,661 [6] 22,267,661 [6] 22,267,661  
Investment, cost $ 16,172 [10]         $ 16,172 [6]        
Investments at fair value $ 10,466 [10]         $ 12,247 [6]     $ 14,474 0
Investment owned, percent of net assets (as a percent) 0.70% 0.70% 0.70% 0.70% 0.70%       1.00%  
Investment, Identifier [Axis]: Continental Intermodal Group LP, Oil & Gas Storage & Transportation, Preferred Equity                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 3,137,476 [10] 3,137,476 [10] 3,137,476 [10] 3,137,476 [10] 3,137,476 [10] 3,137,476 [6] 3,137,476 [6] 3,137,476 [6] 3,137,476  
Investment, cost $ 3,137 [10]         $ 3,137 [6]        
Investments at fair value $ 3,577 [10]         $ 3,357 [6]     $ 3,263 0
Investment owned, percent of net assets (as a percent) 0.20% 0.20% 0.20% 0.20% 0.20%       0.20%  
Investment, Identifier [Axis]: Conviva Inc., Application Software, Preferred Equity                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 417,851 [10] 417,851 [10] 417,851 [10] 417,851 [10] 417,851 [10] 417,851 [6] 417,851 [6] 417,851 [6]    
Investment, cost $ 605 [10]         $ 605 [6]        
Investments at fair value $ 894 [10]         $ 894 [6]        
Investment, Identifier [Axis]: CoreRx, Inc., Pharmaceuticals, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 7.50% [10],[15] 7.50% [10],[15] 7.50% [10],[15] 7.50% [10],[15] 7.50% [10],[15] 7.50% [6],[21] 7.50% [6],[21] 7.50% [6],[21]    
Investment, interest rate (as a percent) 11.80% [10],[12],[15] 11.80% [10],[12],[15] 11.80% [10],[12],[15] 11.80% [10],[12],[15] 11.80% [10],[12],[15] 12.10% [6],[7],[21] 12.10% [6],[7],[21] 12.10% [6],[7],[21]    
Investment, principal $ 6,494 [10],[13],[15]         $ 6,494 [6],[9],[21]        
Investment, cost 6,372 [10],[15]         6,347 [6],[21]        
Investments at fair value $ 6,354 [10],[15]         $ 6,348 [6],[21]        
Investment, Identifier [Axis]: Coupa Holdings, LLC, Application Software First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[15] 5.25% 5.25% 5.25% 5.25% 5.25%          
Investment, interest rate (as a percent) [10],[12],[15] 9.53% 9.53% 9.53% 9.53% 9.53%          
Investment, principal [10],[13],[15] $ 13,025                  
Investment, cost [10],[15] 12,808                  
Investments at fair value [10],[15] $ 13,025                  
Investment, Identifier [Axis]: Coupa Holdings, LLC, Application Software, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.25% [10],[11],[15] 5.25% [10],[11],[15] 5.25% [10],[11],[15] 5.25% [10],[11],[15] 5.25% [10],[11],[15] 5.50% [5],[6],[21] 5.50% [5],[6],[21] 5.50% [5],[6],[21]    
Investment, principal $ 0 [10],[11],[13],[15]         $ 0 [5],[6],[9],[21]        
Investment, cost (14) [10],[11],[15]         (17) [5],[6],[21]        
Investments at fair value $ 0 [10],[11],[15]         $ 0 [5],[6],[21]        
Investment, Identifier [Axis]: Coupa Holdings, LLC, Application Software, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [5],[6],[21]           5.50% 5.50% 5.50%    
Investment, cost [5],[6],[21]           $ (15)        
Investments at fair value [5],[6],[21]           $ 0        
Investment, Identifier [Axis]: Coupa Holdings, LLC, Application Software, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.25% [10],[11],[15] 5.25% [10],[11],[15] 5.25% [10],[11],[15] 5.25% [10],[11],[15] 5.25% [10],[11],[15] 5.50% [6],[21] 5.50% [6],[21] 5.50% [6],[21]    
Investment, interest rate (as a percent) [6],[7],[21]           10.75% 10.75% 10.75%    
Investment, principal $ 0 [10],[11],[13],[15]         $ 13,124 [6],[9],[21]        
Investment, cost (10) [10],[11],[15]         12,870 [6],[21]        
Investments at fair value $ 0 [10],[11],[15]         $ 13,124 [6],[21]        
Investment, Identifier [Axis]: Covetrus, Inc., Health Care Distributors, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [21]           5.00% 5.00% 5.00%    
Investment, interest rate (as a percent) [7],[21]           9.60% 9.60% 9.60%    
Investment, principal [9],[21]           $ 10,878        
Investment, cost [21]           10,518        
Investments at fair value [21]           $ 10,341        
Investment, Identifier [Axis]: Creek Parent, Inc., Life Sciences Tools & Services, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[11],[15] 5.25% 5.25% 5.25% 5.25% 5.25%          
Investment, principal [10],[11],[13],[15] $ 0                  
Investment, cost [10],[11],[15] (111)                  
Investments at fair value [10],[11],[15] $ (112)                  
Investment, Identifier [Axis]: Creek Parent, Inc.., Life Sciences Tools & Services, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[15] 5.25% 5.25% 5.25% 5.25% 5.25%          
Investment, interest rate (as a percent) [10],[12],[15] 9.57% 9.57% 9.57% 9.57% 9.57%          
Investment, principal [10],[13],[15] $ 47,865                  
Investment, cost [10],[15] 47,091                  
Investments at fair value [10],[15] $ 47,085                  
Investment, Identifier [Axis]: Crewline Buyer, Inc., Systems Software, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 6.75% [10],[11],[15] 6.75% [10],[11],[15] 6.75% [10],[11],[15] 6.75% [10],[11],[15] 6.75% [10],[11],[15] 6.75% [5],[6],[21] 6.75% [5],[6],[21] 6.75% [5],[6],[21]    
Investment, principal $ 0 [10],[11],[13],[15]         $ 0 [5],[6],[9],[21]        
Investment, cost (42) [10],[11],[15]         (48) [5],[6],[21]        
Investments at fair value $ (22) [10],[11],[15]         $ (31) [5],[6],[21]        
Investment, Identifier [Axis]: Crewline Buyer, Inc., Systems Software, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [6],[21]           6.75% 6.75% 6.75%    
Investment, interest rate (as a percent) [6],[7],[21]           11.35% 11.35% 11.35%    
Investment, principal [6],[9],[21]           $ 20,924        
Investment, cost [6],[21]           20,468        
Investments at fair value [6],[21]           $ 20,627        
Investment, Identifier [Axis]: Crewline Buyer, Inc., Systems Software, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[15] 6.75% 6.75% 6.75% 6.75% 6.75%          
Investment, interest rate (as a percent) [10],[12],[15] 11.08% 11.08% 11.08% 11.08% 11.08%          
Investment, principal [10],[13],[15] $ 20,924                  
Investment, cost [10],[15] 20,524                  
Investments at fair value [10],[15] $ 20,715                  
Investment, Identifier [Axis]: Crewline Buyer, Inc., Systems Software, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[15] 6.75% 6.75% 6.75% 6.75% 6.75%          
Investment, interest rate (as a percent) [10],[12],[15] 11.08% 11.08% 11.08% 11.08% 11.08%          
Investment, principal [10],[13],[15] $ 1,420                  
Investment, cost [10],[15] 1,388                  
Investments at fair value [10],[15] $ 1,406                  
Investment, Identifier [Axis]: DTI Holdco, Inc., Research & Consulting Services, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [15] 4.00% 4.00% 4.00% 4.00% 4.00%          
Investment, interest rate (as a percent) [12],[15] 8.33% 8.33% 8.33% 8.33% 8.33%          
Investment, principal [13],[15] $ 17,940                  
Investment, cost [15] 17,884                  
Investments at fair value [15] $ 17,759                  
Investment, Identifier [Axis]: Delta Leasing SPV II LLC, Specialized Finance, Common Stock                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 2 [10],[14] 2 [10],[14] 2 [10],[14] 2 [10],[14] 2 [10],[14] 2 [6],[17] 2 [6],[17] 2 [6],[17]    
Investment, cost $ 2 [10],[14]         $ 2 [6],[17]        
Investments at fair value $ 3 [10],[14]         $ 2 [6],[17]        
Investment, Identifier [Axis]: Delta Leasing SPV II LLC, Specialized Finance, Preferred Equity                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 419 [10],[14] 419 [10],[14] 419 [10],[14] 419 [10],[14] 419 [10],[14] 419 [6],[17] 419 [6],[17] 419 [6],[17]    
Investment, cost $ 419 [10],[14]         $ 419 [6],[17]        
Investments at fair value $ 578 [10],[14]         $ 531 [6],[17]        
Investment, Identifier [Axis]: Delta Leasing SPV II LLC, Specialized Finance, Subordinated Debt Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, interest rate (as a percent) 8.00% [10],[12],[14] 8.00% [10],[12],[14] 8.00% [10],[12],[14] 8.00% [10],[12],[14] 8.00% [10],[12],[14] 8.00% [5],[6],[7],[17] 8.00% [5],[6],[7],[17] 8.00% [5],[6],[7],[17]    
Investment, interest rate, paid in kind (as a percent) 3.00% [10],[14] 3.00% [10],[14] 3.00% [10],[14] 3.00% [10],[14] 3.00% [10],[14] 3.00% [5],[6],[17] 3.00% [5],[6],[17] 3.00% [5],[6],[17]    
Investment, principal $ 12,286 [10],[13],[14]         $ 8,456 [5],[6],[9],[17]        
Investment, cost 12,286 [10],[14]         8,456 [5],[6],[17]        
Investments at fair value $ 12,286 [10],[14]         $ 8,456 [5],[6],[17]        
Investment, Identifier [Axis]: Delta Leasing SPV II LLC, Specialized Finance, Subordinated Debt Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, interest rate (as a percent) 3.00% [10],[12],[14] 3.00% [10],[12],[14] 3.00% [10],[12],[14] 3.00% [10],[12],[14] 3.00% [10],[12],[14] 3.00% [6],[7],[17] 3.00% [6],[7],[17] 3.00% [6],[7],[17]    
Investment, interest rate, paid in kind (as a percent) 7.00% [10],[14] 7.00% [10],[14] 7.00% [10],[14] 7.00% [10],[14] 7.00% [10],[14] 7.00% [6],[17] 7.00% [6],[17] 7.00% [6],[17]    
Investment, principal $ 36,149 [10],[13],[14]         $ 34,316 [6],[9],[17]        
Investment, cost 36,149 [10],[14]         34,316 [6],[17]        
Investments at fair value $ 36,149 [10],[14]         $ 34,316 [6],[17]        
Investment, Identifier [Axis]: Delta Leasing SPV II LLC, Specialized Finance, Warrants                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 31 [10],[14] 31 [10],[14] 31 [10],[14] 31 [10],[14] 31 [10],[14] 31 [6],[17] 31 [6],[17] 31 [6],[17]    
Investment, cost $ 0 [10],[14]         $ 0 [6],[17]        
Investments at fair value $ 0 [10],[14]         $ 0 [6],[17]        
Investment, Identifier [Axis]: Dialyze Holdings, LLC, Health Care Equipment, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 11.00% [10],[15],[19] 11.00% [10],[15],[19] 11.00% [10],[15],[19] 11.00% [10],[15],[19] 11.00% [10],[15],[19] 11.00% [6],[21] 11.00% [6],[21] 11.00% [6],[21]    
Investment, interest rate, paid in kind (as a percent) [6],[21]           15.75% 15.75% 15.75%    
Investment, principal $ 25,623 [10],[13],[15],[19]         $ 23,660 [6],[9],[21]        
Investment, cost 23,277 [10],[15],[19]         23,264 [6],[21]        
Investments at fair value $ 5,125 [10],[15],[19]         $ 21,175 [6],[21]        
Investment, Identifier [Axis]: Dialyze Holdings, LLC, Health Care Equipment, First Lien Term Loan 10                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[15],[19] 11.00% 11.00% 11.00% 11.00% 11.00%          
Investment, principal [10],[13],[15],[19] $ 411                  
Investment, cost [10],[15],[19] 411                  
Investments at fair value [10],[15],[19] $ 82                  
Investment, Identifier [Axis]: Dialyze Holdings, LLC, Health Care Equipment, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 11.00% [10],[15],[19] 11.00% [10],[15],[19] 11.00% [10],[15],[19] 11.00% [10],[15],[19] 11.00% [10],[15],[19] 11.00% [6],[21] 11.00% [6],[21] 11.00% [6],[21]    
Investment, interest rate, paid in kind (as a percent) [6],[21]           15.75% 15.75% 15.75%    
Investment, principal $ 735 [10],[13],[15],[19]         $ 655 [6],[9],[21]        
Investment, cost 655 [10],[15],[19]         655 [6],[21]        
Investments at fair value $ 147 [10],[15],[19]         $ 586 [6],[21]        
Investment, Identifier [Axis]: Dialyze Holdings, LLC, Health Care Equipment, First Lien Term Loan 3                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 11.00% [10],[15],[19] 11.00% [10],[15],[19] 11.00% [10],[15],[19] 11.00% [10],[15],[19] 11.00% [10],[15],[19] 11.00% [6],[21] 11.00% [6],[21] 11.00% [6],[21]    
Investment, interest rate, paid in kind (as a percent) [6],[21]           15.75% 15.75% 15.75%    
Investment, principal $ 727 [10],[13],[15],[19]         $ 647 [6],[9],[21]        
Investment, cost 651 [10],[15],[19]         647 [6],[21]        
Investments at fair value $ 145 [10],[15],[19]         $ 579 [6],[21]        
Investment, Identifier [Axis]: Dialyze Holdings, LLC, Health Care Equipment, First Lien Term Loan 4                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 11.00% [10],[15],[19] 11.00% [10],[15],[19] 11.00% [10],[15],[19] 11.00% [10],[15],[19] 11.00% [10],[15],[19] 11.00% [6],[21] 11.00% [6],[21] 11.00% [6],[21]    
Investment, interest rate, paid in kind (as a percent) [6],[21]           15.75% 15.75% 15.75%    
Investment, principal $ 1,166 [10],[13],[15],[19]         $ 1,039 [6],[9],[21]        
Investment, cost 1,042 [10],[15],[19]         1,039 [6],[21]        
Investments at fair value $ 233 [10],[15],[19]         $ 929 [6],[21]        
Investment, Identifier [Axis]: Dialyze Holdings, LLC, Health Care Equipment, First Lien Term Loan 5                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 11.00% [10],[15],[19] 11.00% [10],[15],[19] 11.00% [10],[15],[19] 11.00% [10],[15],[19] 11.00% [10],[15],[19] 11.00% [6],[21] 11.00% [6],[21] 11.00% [6],[21]    
Investment, interest rate, paid in kind (as a percent) [6],[21]           15.75% 15.75% 15.75%    
Investment, principal $ 956 [10],[13],[15],[19]         $ 852 [6],[9],[21]        
Investment, cost 855 [10],[15],[19]         852 [6],[21]        
Investments at fair value $ 191 [10],[15],[19]         $ 762 [6],[21]        
Investment, Identifier [Axis]: Dialyze Holdings, LLC, Health Care Equipment, First Lien Term Loan 6                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[15],[19] 11.00% 11.00% 11.00% 11.00% 11.00%          
Investment, principal [10],[13],[15],[19] $ 331                  
Investment, cost [10],[15],[19] 308                  
Investments at fair value [10],[15],[19] $ 66                  
Investment, Identifier [Axis]: Dialyze Holdings, LLC, Health Care Equipment, First Lien Term Loan 7                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[15],[19] 11.00% 11.00% 11.00% 11.00% 11.00%          
Investment, principal [10],[13],[15],[19] $ 1,914                  
Investment, cost [10],[15],[19] 1,745                  
Investments at fair value [10],[15],[19] $ 383                  
Investment, Identifier [Axis]: Dialyze Holdings, LLC, Health Care Equipment, First Lien Term Loan 8                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[15],[19] 11.00% 11.00% 11.00% 11.00% 11.00%          
Investment, principal [10],[13],[15],[19] $ 429                  
Investment, cost [10],[15],[19] 429                  
Investments at fair value [10],[15],[19] $ 86                  
Investment, Identifier [Axis]: Dialyze Holdings, LLC, Health Care Equipment, First Lien Term Loan 9                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[11],[15],[19] 11.00% 11.00% 11.00% 11.00% 11.00%          
Investment, principal [10],[11],[13],[15],[19] $ 0                  
Investment, cost [10],[11],[15],[19] 0                  
Investments at fair value [10],[11],[15],[19] $ (985)                  
Investment, Identifier [Axis]: Dialyze Holdings, LLC, Health Care Equipment, Subordinated Debt Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, interest rate, paid in kind (as a percent) 10.00% [10],[19] 10.00% [10],[19] 10.00% [10],[19] 10.00% [10],[19] 10.00% [10],[19] 10.00% [6],[20] 10.00% [6],[20] 10.00% [6],[20]    
Investment, principal $ 782 [10],[13],[19]         $ 725 [6],[9],[20]        
Investment, cost 762 [10],[19]         724 [6],[20]        
Investments at fair value $ 0 [10],[19]         $ 375 [6],[20]        
Investment, Identifier [Axis]: Dialyze Holdings, LLC, Health Care Equipment, Subordinated Debt Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, interest rate, paid in kind (as a percent) 10.00% [10],[19] 10.00% [10],[19] 10.00% [10],[19] 10.00% [10],[19] 10.00% [10],[19] 10.00% [6],[20] 10.00% [6],[20] 10.00% [6],[20]    
Investment, principal $ 1,034 [10],[13],[19]         $ 959 [6],[9],[20]        
Investment, cost 0 [10],[19]         0 [6],[20]        
Investments at fair value $ 0 [10],[19]         $ 496 [6],[20]        
Investment, Identifier [Axis]: Dialyze Holdings, LLC, Health Care Equipment, Subordinated Debt Term Loan 3                    
Schedule of Investments [Line Items]                    
Investment, interest rate, paid in kind (as a percent) 10.00% [10],[19] 10.00% [10],[19] 10.00% [10],[19] 10.00% [10],[19] 10.00% [10],[19] 10.00% [6],[20] 10.00% [6],[20] 10.00% [6],[20]    
Investment, principal $ 1,027 [10],[13],[19]         $ 952 [6],[9],[20]        
Investment, cost 0 [10],[19]         0 [6],[20]        
Investments at fair value $ 0 [10],[19]         $ 493 [6],[20]        
Investment, Identifier [Axis]: Dialyze Holdings, LLC, Health Care Equipment, Subordinated Debt Term Loan 4                    
Schedule of Investments [Line Items]                    
Investment, interest rate, paid in kind (as a percent) 10.00% [10],[19] 10.00% [10],[19] 10.00% [10],[19] 10.00% [10],[19] 10.00% [10],[19] 10.00% [6],[20] 10.00% [6],[20] 10.00% [6],[20]    
Investment, principal $ 1,810 [10],[13],[19]         $ 1,679 [6],[9],[20]        
Investment, cost 0 [10],[19]         0 [6],[20]        
Investments at fair value $ 0 [10],[19]         $ 869 [6],[20]        
Investment, Identifier [Axis]: Dialyze Holdings, LLC, Health Care Equipment, Warrants                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 6,397,254 [10] 6,397,254 [10] 6,397,254 [10] 6,397,254 [10] 6,397,254 [10] 6,397,254 [6] 6,397,254 [6] 6,397,254 [6]    
Investment, cost $ 1,642 [10]         $ 1,642 [6]        
Investments at fair value $ 0 [10]         $ 0 [6]        
Investment, Identifier [Axis]: Digital.AI Software Holdings, Inc., Application Software, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 6.00% [10],[11],[15] 6.00% [10],[11],[15] 6.00% [10],[11],[15] 6.00% [10],[11],[15] 6.00% [10],[11],[15] 6.00% [5],[6],[21] 6.00% [5],[6],[21] 6.00% [5],[6],[21]    
Investment, interest rate (as a percent) [10],[11],[12],[15] 10.30% 10.30% 10.30% 10.30% 10.30%          
Investment, principal $ 1,007 [10],[11],[13],[15]         $ 0 [5],[6],[9],[21]        
Investment, cost 1,007 [10],[11],[15]         0 [5],[6],[21]        
Investments at fair value $ 902 [10],[11],[15]         $ (36) [5],[6],[21]        
Investment, Identifier [Axis]: Digital.AI Software Holdings, Inc., Application Software, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 6.00% [10],[15] 6.00% [10],[15] 6.00% [10],[15] 6.00% [10],[15] 6.00% [10],[15] 6.00% [6],[21] 6.00% [6],[21] 6.00% [6],[21]    
Investment, interest rate (as a percent) 10.30% [10],[12],[15] 10.30% [10],[12],[15] 10.30% [10],[12],[15] 10.30% [10],[12],[15] 10.30% [10],[12],[15] 10.60% [6],[7],[21] 10.60% [6],[7],[21] 10.60% [6],[7],[21]    
Investment, principal $ 54,031 [10],[13],[15]         $ 54,454 [6],[9],[21]        
Investment, cost 54,030 [10],[15]         54,449 [6],[21]        
Investments at fair value $ 53,085 [10],[15]         $ 54,127 [6],[21]        
Investment, Identifier [Axis]: Digital.AI Software Holdings, Inc., Application Software, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 6.00% [10],[15] 6.00% [10],[15] 6.00% [10],[15] 6.00% [10],[15] 6.00% [10],[15] 6.00% [6],[21] 6.00% [6],[21] 6.00% [6],[21]    
Investment, interest rate (as a percent) 10.30% [10],[12],[15] 10.30% [10],[12],[15] 10.30% [10],[12],[15] 10.30% [10],[12],[15] 10.30% [10],[12],[15] 10.60% [6],[7],[21] 10.60% [6],[7],[21] 10.60% [6],[7],[21]    
Investment, principal $ 2,916 [10],[13],[15]         $ 2,939 [6],[9],[21]        
Investment, cost 2,895 [10],[15]         2,913 [6],[21]        
Investments at fair value $ 2,865 [10],[15]         $ 2,921 [6],[21]        
Investment, Identifier [Axis]: DirecTV Financing, LLC, Cable & Satellite, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [15] 5.50% 5.50% 5.50% 5.50% 5.50%          
Investment, interest rate (as a percent) [12],[15] 9.83% 9.83% 9.83% 9.83% 9.83%          
Investment, principal [13],[15] $ 13,953                  
Investment, cost [15] 13,685                  
Investments at fair value [15] $ 13,357                  
Investment, Identifier [Axis]: DirecTV Financing, LLC, Cable & Satellite, First Rate Bond                    
Schedule of Investments [Line Items]                    
Investment, interest rate (as a percent) [12] 10.00% 10.00% 10.00% 10.00% 10.00%          
Investment, principal [13] $ 14,203                  
Investment, cost 14,203                  
Investments at fair value $ 13,798                  
Investment, Identifier [Axis]: Dominion Diagnostics, LLC, Health Care Services, Common Stock                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 30,031 [10] 30,031 [10] 30,031 [10] 30,031 [10] 30,031 [10] 30,031 [6] 30,031 [6] 30,031 [6] 30,031  
Investment, cost $ 15,222 [10]         $ 15,222 [6]        
Investments at fair value $ 0 [10]         $ 0 [6]     $ 0 2,711
Investment owned, percent of net assets (as a percent) 0.00% 0.00% 0.00% 0.00% 0.00%       0.00%  
Investment, Identifier [Axis]: Dominion Diagnostics, LLC, Health Care Services, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.00% 5.00% 5.00% 5.00% 5.00% 5.00% [6],[21] 5.00% [6],[21] 5.00% [6],[21] 5.00%  
Investment, interest rate (as a percent)           9.75% [6],[7],[21] 9.75% [6],[7],[21] 9.75% [6],[7],[21] 10.48%  
Investment, principal $ 0         $ 5,574 [6],[9],[21]     $ 5,574  
Investment, cost [6],[21]           5,574        
Investments at fair value $ 0         4,546 [6],[21]     $ 5,222 5,574
Investment owned, percent of net assets (as a percent) 0.00% 0.00% 0.00% 0.00% 0.00%       0.30%  
Investment, Identifier [Axis]: Dominion Diagnostics, LLC, Health Care Services, First Lien Term Loan 3                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.00% 5.00% 5.00% 5.00% 5.00%          
Investment, principal $ 0                  
Investments at fair value $ 0         11,360        
Investment owned, percent of net assets (as a percent) 0.00% 0.00% 0.00% 0.00% 0.00%          
Investment, Identifier [Axis]: Dominion Diagnostics, LLC, Health Care Services, First Lien Term Loan 4                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.00% 5.00% 5.00% 5.00% 5.00%          
Investment, principal $ 0                  
Investments at fair value $ 0         (1,028)        
Investment owned, percent of net assets (as a percent) 0.00% 0.00% 0.00% 0.00% 0.00%          
Investment, Identifier [Axis]: Dominion Diagnostics, LLC, Health Care Services, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.00% [10],[15],[19] 5.00% [10],[15],[19] 5.00% [10],[15],[19] 5.00% [10],[15],[19] 5.00% [10],[15],[19]       5.00%  
Investment, interest rate (as a percent)                 10.48%  
Investment, principal $ 6,967 [10],[13],[15],[19]               $ 13,963  
Investment, cost [10],[15],[19] 5,303                  
Investments at fair value $ 5,351 [10],[15],[19]         0     $ 13,081 14,068
Investment owned, percent of net assets (as a percent) 0.40% 0.40% 0.40% 0.40% 0.40%       0.90%  
Investment, Identifier [Axis]: Dominion Diagnostics, LLC, Health Care Services, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 6.50% [10],[15],[19] 6.50% [10],[15],[19] 6.50% [10],[15],[19] 6.50% [10],[15],[19] 6.50% [10],[15],[19]       5.00%  
Investment, interest rate (as a percent)                 10.48%  
Investment, principal $ 12,465 [10],[13],[15],[19]               $ 0  
Investment, cost [10],[15],[19] 13,182                  
Investments at fair value $ 0 [10],[15],[19]         $ 0     $ 0 2,090
Investment owned, percent of net assets (as a percent) 0.00% 0.00% 0.00% 0.00% 0.00%       0.00%  
Investment, Identifier [Axis]: Dominion Diagnostics, LLC, Health Care Services, First Lien Term Loan 3                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [6],[21]           5.00% 5.00% 5.00%    
Investment, interest rate (as a percent) [6],[7],[21]           9.74% 9.74% 9.74%    
Investment, principal [6],[9],[21]           $ 13,928        
Investment, cost [6],[21]           13,928        
Investments at fair value [6],[21]           $ 11,360        
Investment, Identifier [Axis]: Dominion Diagnostics, LLC, Health Care Services, First Lien Term Loan 4                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [5],[6],[21]           5.00% 5.00% 5.00%    
Investment, principal [5],[6],[9],[21]           $ 0        
Investment, cost [5],[6],[21]           0        
Investments at fair value [5],[6],[21]           $ (1,028)        
Investment, Identifier [Axis]: Draken International, LLC, Aerospace & Defense, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[14],[15] 5.50% 5.50% 5.50% 5.50% 5.50%          
Investment, interest rate (as a percent) [10],[12],[14],[15] 9.71% 9.71% 9.71% 9.71% 9.71%          
Investment, principal | € [10],[13],[14],[15]   € 15,711                
Investment, cost [10],[14],[15] $ 20,589                  
Investments at fair value [10],[14],[15] $ 21,129                  
Investment, Identifier [Axis]: Draken International, LLC, Aerospace & Defense, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[14],[15] 5.50% 5.50% 5.50% 5.50% 5.50%          
Investment, interest rate (as a percent) [10],[12],[14],[15] 9.82% 9.82% 9.82% 9.82% 9.82%          
Investment, principal [10],[13],[14],[15] $ 4,992                  
Investment, cost [10],[14],[15] 4,894                  
Investments at fair value [10],[14],[15] $ 4,900                  
Investment, Identifier [Axis]: Draken International, LLC, Aerospace & Defense, First Lien Term Loan 3                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[11],[14],[15] 5.50% 5.50% 5.50% 5.50% 5.50%          
Investment, principal [10],[11],[13],[14],[15] $ 0                  
Investment, cost [10],[11],[14],[15] (58)                  
Investments at fair value [10],[11],[14],[15] $ (55)                  
Investment, Identifier [Axis]: EOS Fitness Opco Holdings, LLC, Leisure Facilities, Common Stock                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 12,500 [10] 12,500 [10] 12,500 [10] 12,500 [10] 12,500 [10] 12,500 [6] 12,500 [6] 12,500 [6]    
Investment, cost $ 0 [10]         $ 0 [6]        
Investments at fair value $ 9,680 [10]         $ 0 [6]        
Investment, Identifier [Axis]: EOS Fitness Opco Holdings, LLC, Leisure Facilities, Preferred Equity                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 488 [10] 488 [10] 488 [10] 488 [10] 488 [10] 488 [6] 488 [6] 488 [6]    
Investment, cost $ 488 [10]         $ 488 [6]        
Investments at fair value $ 2,092 [10]         $ 1,345 [6]        
Investment, Identifier [Axis]: Eagleview Technology Corporation, Application Software, Second Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [6],[21]           7.50% 7.50% 7.50%    
Investment, interest rate (as a percent) [6],[7],[21]           12.25% 12.25% 12.25%    
Investment, principal [6],[9],[21]           $ 8,974        
Investment, cost [6],[21]           8,884        
Investments at fair value [6],[21]           $ 8,121        
Investment, Identifier [Axis]: Engineering Research and Consulting LLC, Construction & Engineering, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.00% [15] 5.00% [15] 5.00% [15] 5.00% [15] 5.00% [15] 5.00% [6],[21] 5.00% [6],[21] 5.00% [6],[21]    
Investment, interest rate (as a percent) 9.29% [12],[15] 9.29% [12],[15] 9.29% [12],[15] 9.29% [12],[15] 9.29% [12],[15] 10.06% [6],[7],[21] 10.06% [6],[7],[21] 10.06% [6],[7],[21]    
Investment, principal $ 11,873 [13],[15]         $ 11,933 [6],[9],[21]        
Investment, cost 11,664 [15]         11,697 [6],[21]        
Investments at fair value $ 11,636 [15]         $ 11,858 [6],[21]        
Investment, Identifier [Axis]: Enverus Holdings, Inc., Application Software, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [5],[6],[21] 5.50% [5],[6],[21] 5.50% [5],[6],[21]    
Investment, interest rate (as a percent) 9.82% [10],[11],[12],[15] 9.82% [10],[11],[12],[15] 9.82% [10],[11],[12],[15] 9.82% [10],[11],[12],[15] 9.82% [10],[11],[12],[15] 10.35% [5],[6],[7],[21] 10.35% [5],[6],[7],[21] 10.35% [5],[6],[7],[21]    
Investment, principal $ 137 [10],[11],[13],[15]         $ 121 [5],[6],[9],[21]        
Investment, cost 116 [10],[11],[15]         96 [5],[6],[21]        
Investments at fair value $ 137 [10],[11],[15]         $ 121 [5],[6],[21]        
Investment, Identifier [Axis]: Enverus Holdings, Inc., Application Software, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.50% [10],[15] 5.50% [10],[15] 5.50% [10],[15] 5.50% [10],[15] 5.50% [10],[15] 5.50% [6],[21] 5.50% [6],[21] 5.50% [6],[21]    
Investment, interest rate (as a percent) 9.83% [10],[12],[15] 9.83% [10],[12],[15] 9.83% [10],[12],[15] 9.83% [10],[12],[15] 9.83% [10],[12],[15] 10.35% [6],[7],[21] 10.35% [6],[7],[21] 10.35% [6],[7],[21]    
Investment, principal $ 25,323 [10],[13],[15]         $ 24,741 [6],[9],[21]        
Investment, cost 24,955 [10],[15]         24,369 [6],[21]        
Investments at fair value $ 25,323 [10],[15]         $ 24,741 [6],[21]        
Investment, Identifier [Axis]: Enverus Holdings, Inc., Application Software, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [5],[6],[21] 5.50% [5],[6],[21] 5.50% [5],[6],[21]    
Investment, principal $ 0 [10],[11],[13],[15]         $ 0 [5],[6],[9],[21]        
Investment, cost (8) [10],[11],[15]         (16) [5],[6],[21]        
Investments at fair value $ 0 [10],[11],[15]         $ 0 [5],[6],[21]        
Investment, Identifier [Axis]: Establishment Labs Holdings Inc., Health Care Technology, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, interest rate (as a percent) 9.00% [10],[12],[14] 9.00% [10],[12],[14] 9.00% [10],[12],[14] 9.00% [10],[12],[14] 9.00% [10],[12],[14] 9.00% [6],[7],[17] 9.00% [6],[7],[17] 9.00% [6],[7],[17]    
Investment, principal $ 1,834 [10],[13],[14]         $ 1,834 [6],[9],[17]        
Investment, cost 1,822 [10],[14]         1,817 [6],[17]        
Investments at fair value $ 1,834 [10],[14]         $ 1,834 [6],[17]        
Investment, Identifier [Axis]: Establishment Labs Holdings Inc., Health Care Technology, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, interest rate (as a percent) 10.00% [10],[12],[14] 10.00% [10],[12],[14] 10.00% [10],[12],[14] 10.00% [10],[12],[14] 10.00% [10],[12],[14] 9.00% [5],[6],[7],[17] 9.00% [5],[6],[7],[17] 9.00% [5],[6],[7],[17]    
Investment, principal $ 1,692 [10],[13],[14]         $ 0 [5],[6],[9],[17]        
Investment, cost 1,658 [10],[14]         1 [5],[6],[17]        
Investments at fair value $ 1,726 [10],[14]         $ 0 [5],[6],[17]        
Investment, Identifier [Axis]: Establishment Labs Holdings Inc., Health Care Technology, First Lien Term Loan 3                    
Schedule of Investments [Line Items]                    
Investment, interest rate (as a percent) 10.00% [10],[11],[12],[14] 10.00% [10],[11],[12],[14] 10.00% [10],[11],[12],[14] 10.00% [10],[11],[12],[14] 10.00% [10],[11],[12],[14] 9.00% [5],[6],[7],[17] 9.00% [5],[6],[7],[17] 9.00% [5],[6],[7],[17]    
Investment, principal $ 0 [10],[11],[13],[14]         $ 0 [5],[6],[9],[17]        
Investment, cost 0 [10],[11],[14]         1 [5],[6],[17]        
Investments at fair value $ 0 [10],[11],[14]         $ 0 [5],[6],[17]        
Investment, Identifier [Axis]: Establishment Labs Holdings Inc., Health Care Technology, First Lien Term Loan 4                    
Schedule of Investments [Line Items]                    
Investment, interest rate (as a percent) 9.00% [10],[12],[14] 9.00% [10],[12],[14] 9.00% [10],[12],[14] 9.00% [10],[12],[14] 9.00% [10],[12],[14] 9.00% [6],[7],[17] 9.00% [6],[7],[17] 9.00% [6],[7],[17]    
Investment, principal $ 11,454 [10],[13],[14]         $ 11,454 [6],[9],[17]        
Investment, cost 11,397 [10],[14]         11,374 [6],[17]        
Investments at fair value $ 11,454 [10],[14]         $ 11,454 [6],[17]        
Investment, Identifier [Axis]: Everbridge, Inc., Application Software, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.00% [10],[11],[15] 5.00% [10],[11],[15] 5.00% [10],[11],[15] 5.00% [10],[11],[15] 5.00% [10],[11],[15] 5.00% [5],[6],[21] 5.00% [5],[6],[21] 5.00% [5],[6],[21]    
Investment, principal $ 0 [10],[11],[13],[15]         $ 0 [5],[6],[9],[21]        
Investment, cost (9) [10],[11],[15]         (10) [5],[6],[21]        
Investments at fair value $ (8) [10],[11],[15]         $ (9) [5],[6],[21]        
Investment, Identifier [Axis]: Everbridge, Inc., Application Software, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.00% [10],[15] 5.00% [10],[15] 5.00% [10],[15] 5.00% [10],[15] 5.00% [10],[15] 5.00% [6],[21] 5.00% [6],[21] 5.00% [6],[21]    
Investment, interest rate (as a percent) 9.29% [10],[12],[15] 9.29% [10],[12],[15] 9.29% [10],[12],[15] 9.29% [10],[12],[15] 9.29% [10],[12],[15] 10.33% [6],[7],[21] 10.33% [6],[7],[21] 10.33% [6],[7],[21]    
Investment, principal $ 19,914 [10],[13],[15]         $ 20,014 [6],[9],[21]        
Investment, cost 19,829 [10],[15]         19,914 [6],[21]        
Investments at fair value $ 19,830 [10],[15]         $ 19,922 [6],[21]        
Investment, Identifier [Axis]: Everbridge, Inc., Application Software, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.00% [10],[11],[15] 5.00% [10],[11],[15] 5.00% [10],[11],[15] 5.00% [10],[11],[15] 5.00% [10],[11],[15] 5.00% [5],[6],[21] 5.00% [5],[6],[21] 5.00% [5],[6],[21]    
Investment, interest rate (as a percent) 9.29% [10],[11],[12],[15] 9.29% [10],[11],[12],[15] 9.29% [10],[11],[12],[15] 9.29% [10],[11],[12],[15] 9.29% [10],[11],[12],[15] 10.30% [5],[6],[7],[21] 10.30% [5],[6],[7],[21] 10.30% [5],[6],[7],[21]    
Investment, principal $ 1,951 [10],[11],[13],[15]         $ 1,961 [5],[6],[9],[21]        
Investment, cost 1,936 [10],[11],[15]         1,944 [5],[6],[21]        
Investments at fair value $ 1,930 [10],[11],[15]         $ 1,950 [5],[6],[21]        
Investment, Identifier [Axis]: Evergreen IX Borrower 2023, LLC, Application Software, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 4.75% [10],[11],[15] 4.75% [10],[11],[15] 4.75% [10],[11],[15] 4.75% [10],[11],[15] 4.75% [10],[11],[15] 4.75% [5],[6],[21] 4.75% [5],[6],[21] 4.75% [5],[6],[21]    
Investment, principal $ 0 [10],[11],[13],[15]         $ 0 [5],[6],[9],[21]        
Investment, cost (29) [10],[11],[15]         (34) [5],[6],[21]        
Investments at fair value $ 0 [10],[11],[15]         $ (14) [5],[6],[21]        
Investment, Identifier [Axis]: Evergreen IX Borrower 2023, LLC, Application Software, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 4.75% [10],[15] 4.75% [10],[15] 4.75% [10],[15] 4.75% [10],[15] 4.75% [10],[15] 4.75% [6],[21] 4.75% [6],[21] 4.75% [6],[21]    
Investment, interest rate (as a percent) 9.05% [10],[12],[15] 9.05% [10],[12],[15] 9.05% [10],[12],[15] 9.05% [10],[12],[15] 9.05% [10],[12],[15] 9.35% [6],[7],[21] 9.35% [6],[7],[21] 9.35% [6],[7],[21]    
Investment, principal $ 14,515 [10],[13],[15]         $ 14,625 [6],[9],[21]        
Investment, cost 14,243 [10],[15]         14,312 [6],[21]        
Investments at fair value $ 14,515 [10],[15]         $ 14,501 [6],[21]        
Investment, Identifier [Axis]: Evergreen IX Borrower 2023, LLC, Application Software, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 4.75% [10],[15] 4.75% [10],[15] 4.75% [10],[15] 4.75% [10],[15] 4.75% [10],[15] 4.75% [6],[21] 4.75% [6],[21] 4.75% [6],[21]    
Investment, interest rate (as a percent) 9.05% [10],[12],[15] 9.05% [10],[12],[15] 9.05% [10],[12],[15] 9.05% [10],[12],[15] 9.05% [10],[12],[15] 9.35% [6],[7],[21] 9.35% [6],[7],[21] 9.35% [6],[7],[21]    
Investment, principal $ 3,665 [10],[13],[15]         $ 3,692 [6],[9],[21]        
Investment, cost 3,633 [10],[15]         3,656 [6],[21]        
Investments at fair value $ 3,665 [10],[15]         $ 3,661 [6],[21]        
Investment, Identifier [Axis]: Eyesouth Eye Care Holdco LLC, Health Care Services, Common Stock                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 1,206 [10] 1,206 [10] 1,206 [10] 1,206 [10] 1,206 [10] 1,206 [6],[25] 1,206 [6],[25] 1,206 [6],[25]    
Investment, cost $ 1,206 [10]         $ 1,206 [6],[25]        
Investments at fair value $ 1,265 [10]         $ 1,131 [6],[25]        
Investment, Identifier [Axis]: Eyesouth Eye Care Holdco LLC, Health Care Services, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.50% [10],[15] 5.50% [10],[15] 5.50% [10],[15] 5.50% [10],[15] 5.50% [10],[15] 5.50% [6],[21] 5.50% [6],[21] 5.50% [6],[21]    
Investment, interest rate (as a percent) 9.92% [10],[12],[15] 9.92% [10],[12],[15] 9.92% [10],[12],[15] 9.92% [10],[12],[15] 9.92% [10],[12],[15] 10.80% [6],[7],[21] 10.80% [6],[7],[21] 10.80% [6],[7],[21]    
Investment, principal $ 4,335 [10],[13],[15]         $ 4,368 [6],[9],[21]        
Investment, cost 4,268 [10],[15]         4,289 [6],[21]        
Investments at fair value $ 4,275 [10],[15]         $ 4,285 [6],[21]        
Investment, Identifier [Axis]: Eyesouth Eye Care Holdco LLC, Health Care Services, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [5],[6],[21] 5.50% [5],[6],[21] 5.50% [5],[6],[21]    
Investment, interest rate (as a percent) [10],[11],[12],[15] 9.92% 9.92% 9.92% 9.92% 9.92%          
Investment, principal $ 501 [10],[11],[13],[15]         $ 0 [5],[6],[9],[21]        
Investment, cost 445 [10],[11],[15]         (66) [5],[6],[21]        
Investments at fair value $ 409 [10],[11],[15]         $ (125) [5],[6],[21]        
Investment, Identifier [Axis]: F&M Buyer LLC, Systems Software, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[11],[15] 4.75% 4.75% 4.75% 4.75% 4.75%          
Investment, principal [10],[11],[13],[15] $ 0                  
Investment, cost [10],[11],[15] (10)                  
Investments at fair value [10],[11],[15] $ (10)                  
Investment, Identifier [Axis]: F&M Buyer LLC, Systems Software, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[15] 4.75% 4.75% 4.75% 4.75% 4.75%          
Investment, interest rate (as a percent) [10],[12],[15] 9.05% 9.05% 9.05% 9.05% 9.05%          
Investment, principal [10],[13],[15] $ 6,703                  
Investment, cost [10],[15] 6,636                  
Investments at fair value [10],[15] $ 6,636                  
Investment, Identifier [Axis]: F&M Buyer LLC, Systems Software, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[11],[15] 4.75% 4.75% 4.75% 4.75% 4.75%          
Investment, principal [10],[11],[13],[15] $ 0                  
Investment, cost [10],[11],[15] (11)                  
Investments at fair value [10],[11],[15] $ (11)                  
Investment, Identifier [Axis]: Fairbridge Strategic Capital Funding LLC, Real Estate Operating Companies, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, interest rate (as a percent) 9.00% [10],[12] 9.00% [10],[12] 9.00% [10],[12] 9.00% [10],[12] 9.00% [10],[12] 9.00% [6],[7] 9.00% [6],[7] 9.00% [6],[7]    
Investment, principal $ 32,250 [10],[13]         $ 48,920 [6],[9]        
Investment, cost 32,250 [10]         48,920 [6]        
Investments at fair value $ 31,605 [10]         $ 48,920 [6]        
Investment, Identifier [Axis]: Fairbridge Strategic Capital Funding LLC, Real Estate Operating Companies, Warrants                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 3,750 [10],[14],[24] 3,750 [10],[14],[24] 3,750 [10],[14],[24] 3,750 [10],[14],[24] 3,750 [10],[14],[24] 3,750 [6],[17],[26] 3,750 [6],[17],[26] 3,750 [6],[17],[26]    
Investment, cost $ 0 [10],[14],[24]         $ 0 [6],[17],[26]        
Investments at fair value $ 0 [10],[14],[24]         $ 4 [6],[17],[26]        
Investment, Identifier [Axis]: Finastra USA, Inc., Application Software, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 7.25% [10],[11],[14],[15] 7.25% [10],[11],[14],[15] 7.25% [10],[11],[14],[15] 7.25% [10],[11],[14],[15] 7.25% [10],[11],[14],[15] 7.25% [5],[6],[17],[21] 7.25% [5],[6],[17],[21] 7.25% [5],[6],[17],[21]    
Investment, interest rate (as a percent) 11.57% [10],[11],[12],[14],[15] 11.57% [10],[11],[12],[14],[15] 11.57% [10],[11],[12],[14],[15] 11.57% [10],[11],[12],[14],[15] 11.57% [10],[11],[12],[14],[15] 12.18% [5],[6],[7],[17],[21] 12.18% [5],[6],[7],[17],[21] 12.18% [5],[6],[7],[17],[21]    
Investment, principal $ 242 [10],[11],[13],[14],[15]         $ 564 [5],[6],[9],[17],[21]        
Investment, cost 225 [10],[11],[14],[15]         544 [5],[6],[17],[21]        
Investments at fair value $ 242 [10],[11],[14],[15]         $ 547 [5],[6],[17],[21]        
Investment, Identifier [Axis]: Finastra USA, Inc., Application Software, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 7.25% [10],[14],[15] 7.25% [10],[14],[15] 7.25% [10],[14],[15] 7.25% [10],[14],[15] 7.25% [10],[14],[15] 7.25% [6],[17],[21] 7.25% [6],[17],[21] 7.25% [6],[17],[21]    
Investment, interest rate (as a percent) 11.43% [10],[12],[14],[15] 11.43% [10],[12],[14],[15] 11.43% [10],[12],[14],[15] 11.43% [10],[12],[14],[15] 11.43% [10],[12],[14],[15] 12.18% [6],[7],[17],[21] 12.18% [6],[7],[17],[21] 12.18% [6],[7],[17],[21]    
Investment, principal $ 11,595 [10],[13],[14],[15]         $ 11,683 [6],[9],[17],[21]        
Investment, cost 11,433 [10],[14],[15]         11,491 [6],[17],[21]        
Investments at fair value $ 11,595 [10],[14],[15]         $ 11,521 [6],[17],[21]        
Investment, Identifier [Axis]: Finthrive Software Intermediate Holdings, Inc., Health Care Technology, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [6],[21]           4.00% 4.00% 4.00%    
Investment, interest rate (as a percent) [6],[7],[21]           8.96% 8.96% 8.96%    
Investment, principal [6],[9],[21]           $ 4,291        
Investment, cost [6],[21]           3,594        
Investments at fair value [6],[21]           $ 3,862        
Investment, Identifier [Axis]: Finthrive Software Intermediate Holdings, Inc., Health Care Technology, Second Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [6],[20],[21]           6.75% 6.75% 6.75%    
Investment, principal [6],[9],[20],[21]           $ 31,074        
Investment, cost [6],[20],[21]           28,328        
Investments at fair value [6],[20],[21]           $ 23,616        
Investment, Identifier [Axis]: First Star Speir Aviation Limited, Airlines, Equity Interest                    
Schedule of Investments [Line Items]                    
Investment owned, ownership (as a percent)                 100.00%  
Investments at fair value                 $ 0 0
Investment owned, percent of net assets (as a percent)                 0.00%  
Investment, Identifier [Axis]: Fortress Biotech, Inc., Biotechnology, Warrants                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 31,246 [10],[14] 31,246 [10],[14] 31,246 [10],[14] 31,246 [10],[14] 31,246 [10],[14] 27,801 [6],[17] 27,801 [6],[17] 27,801 [6],[17]    
Investment, cost $ 427 [10],[14]         $ 427 [6],[17]        
Investments at fair value $ 16 [10],[14]         $ 13 [6],[17]        
Investment, Identifier [Axis]: Fortress Credit BSL Limited, Multi-Sector Holdings, CLO Notes                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [14],[15] 8.19% 8.19% 8.19% 8.19% 8.19%          
Investment, interest rate (as a percent) [12],[14],[15] 12.46% 12.46% 12.46% 12.46% 12.46%          
Investment, principal [13],[14],[15] $ 1,550                  
Investment, cost [14],[15] 1,558                  
Investments at fair value [14],[15] $ 1,533                  
Investment, Identifier [Axis]: GLICK JV Notes                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 4.50% 4.50% 4.50% 4.50% 4.50%          
Investment, Identifier [Axis]: Galileo Parent, Inc., Aerospace & Defense, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.75% [10],[11],[15] 5.75% [10],[11],[15] 5.75% [10],[11],[15] 5.75% [10],[11],[15] 5.75% [10],[11],[15] 7.25% [5],[6],[21] 7.25% [5],[6],[21] 7.25% [5],[6],[21]    
Investment, interest rate (as a percent) 10.05% [10],[11],[12],[15] 10.05% [10],[11],[12],[15] 10.05% [10],[11],[12],[15] 10.05% [10],[11],[12],[15] 10.05% [10],[11],[12],[15] 11.85% [5],[6],[7],[21] 11.85% [5],[6],[7],[21] 11.85% [5],[6],[7],[21]    
Investment, principal $ 3,990 [10],[11],[13],[15]         $ 2,536 [5],[6],[9],[21]        
Investment, cost 3,963 [10],[11],[15]         2,452 [5],[6],[21]        
Investments at fair value $ 3,951 [10],[11],[15]         $ 2,536 [5],[6],[21]        
Investment, Identifier [Axis]: Galileo Parent, Inc., Aerospace & Defense, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.75% [10],[15] 5.75% [10],[15] 5.75% [10],[15] 5.75% [10],[15] 5.75% [10],[15] 7.25% [6],[21] 7.25% [6],[21] 7.25% [6],[21]    
Investment, interest rate (as a percent) 10.05% [10],[12],[15] 10.05% [10],[12],[15] 10.05% [10],[12],[15] 10.05% [10],[12],[15] 10.05% [10],[12],[15] 11.85% [6],[7],[21] 11.85% [6],[7],[21] 11.85% [6],[7],[21]    
Investment, principal $ 38,351 [10],[13],[15]         $ 23,536 [6],[9],[21]        
Investment, cost 37,867 [10],[15]         22,996 [6],[21]        
Investments at fair value $ 38,102 [10],[15]         $ 23,536 [6],[21]        
Investment, Identifier [Axis]: Grand River Aseptic Manufacturing, Inc., Health Care Equipment, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[11],[15] 5.00% 5.00% 5.00% 5.00% 5.00%          
Investment, principal [10],[11],[13],[15] $ 0                  
Investment, cost [10],[11],[15] (25)                  
Investments at fair value [10],[11],[15] $ (25)                  
Investment, Identifier [Axis]: Grand River Aseptic Manufacturing, Inc., Health Care Equipment, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[15] 5.00% 5.00% 5.00% 5.00% 5.00%          
Investment, interest rate (as a percent) [10],[12],[15] 9.31% 9.31% 9.31% 9.31% 9.31%          
Investment, principal [10],[13],[15] $ 8,432                  
Investment, cost [10],[15] 8,352                  
Investments at fair value [10],[15] $ 8,352                  
Investment, Identifier [Axis]: Grove Hotel Parcel Owner, LLC, Hotels, Resorts & Cruise Lines, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 8.00% [10],[11],[15] 8.00% [10],[11],[15] 8.00% [10],[11],[15] 8.00% [10],[11],[15] 8.00% [10],[11],[15] 8.00% [5],[6],[21] 8.00% [5],[6],[21] 8.00% [5],[6],[21]    
Investment, principal $ 0 [10],[11],[13],[15]         $ 0 [5],[6],[9],[21]        
Investment, cost (14) [10],[11],[15]         (20) [5],[6],[21]        
Investments at fair value $ (32) [10],[11],[15]         $ (35) [5],[6],[21]        
Investment, Identifier [Axis]: Grove Hotel Parcel Owner, LLC, Hotels, Resorts & Cruise Lines, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 8.00% [10],[15] 8.00% [10],[15] 8.00% [10],[15] 8.00% [10],[15] 8.00% [10],[15] 8.00% [6],[21] 8.00% [6],[21] 8.00% [6],[21]    
Investment, interest rate (as a percent) 12.43% [10],[12],[15] 12.43% [10],[12],[15] 12.43% [10],[12],[15] 12.43% [10],[12],[15] 12.43% [10],[12],[15] 12.95% [6],[7],[21] 12.95% [6],[7],[21] 12.95% [6],[7],[21]    
Investment, principal $ 3,524 [10],[13],[15]         $ 3,524 [6],[9],[21]        
Investment, cost 3,495 [10],[15]         3,485 [6],[21]        
Investments at fair value $ 3,461 [10],[15]         $ 3,454 [6],[21]        
Investment, Identifier [Axis]: Grove Hotel Parcel Owner, LLC, Hotels, Resorts & Cruise Lines, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 8.00% [10],[15] 8.00% [10],[15] 8.00% [10],[15] 8.00% [10],[15] 8.00% [10],[15] 8.00% [5],[6],[21] 8.00% [5],[6],[21] 8.00% [5],[6],[21]    
Investment, interest rate (as a percent) 12.43% [10],[12],[15] 12.43% [10],[12],[15] 12.43% [10],[12],[15] 12.43% [10],[12],[15] 12.43% [10],[12],[15] 12.95% [5],[6],[7],[21] 12.95% [5],[6],[7],[21] 12.95% [5],[6],[7],[21]    
Investment, principal $ 17,136 [10],[13],[15]         $ 17,268 [6],[9],[21]        
Investment, cost 17,049 [10],[15]         17,147 [6],[21]        
Investments at fair value $ 16,828 [10],[15]         $ 16,923 [6],[21]        
Investment, Identifier [Axis]: HPS Loan Management 10-2016, Multi-Sector Holdings, CLO Notes                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [17],[21]           6.67% 6.67% 6.67%    
Investment, interest rate (as a percent) [7],[17],[21]           11.95% 11.95% 11.95%    
Investment, principal [9],[17],[21]           $ 2,250        
Investment, cost [17],[21]           2,136        
Investments at fair value [17],[21]           $ 2,264        
Investment, Identifier [Axis]: Harbor Purchaser Inc., Education Services, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.25% [15] 5.25% [15] 5.25% [15] 5.25% [15] 5.25% [15] 5.25% [21] 5.25% [21] 5.25% [21]    
Investment, interest rate (as a percent) 9.63% [12],[15] 9.63% [12],[15] 9.63% [12],[15] 9.63% [12],[15] 9.63% [12],[15] 10.20% [7],[21] 10.20% [7],[21] 10.20% [7],[21]    
Investment, principal $ 8,408 [13],[15]         $ 8,473 [9],[21]        
Investment, cost 8,186 [15]         8,205 [21]        
Investments at fair value $ 8,265 [15]         $ 8,263 [21]        
Investment, Identifier [Axis]: Harrow, Inc., Pharmaceuticals, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 6.50% [10],[14],[15] 6.50% [10],[14],[15] 6.50% [10],[14],[15] 6.50% [10],[14],[15] 6.50% [10],[14],[15] 6.50% [5],[6],[17],[21] 6.50% [5],[6],[17],[21] 6.50% [5],[6],[17],[21]    
Investment, interest rate (as a percent) [10],[12],[14],[15] 10.95% 10.95% 10.95% 10.95% 10.95%          
Investment, principal $ 3,438 [10],[13],[14],[15]         $ 0 [5],[6],[9],[17],[21]        
Investment, cost 3,421 [10],[14],[15]         (40) [5],[6],[17],[21]        
Investments at fair value $ 3,489 [10],[14],[15]         $ 52 [5],[6],[17],[21]        
Investment, Identifier [Axis]: Harrow, Inc., Pharmaceuticals, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 6.50% [10],[14],[15] 6.50% [10],[14],[15] 6.50% [10],[14],[15] 6.50% [10],[14],[15] 6.50% [10],[14],[15] 6.50% [6],[17],[21] 6.50% [6],[17],[21] 6.50% [6],[17],[21]    
Investment, interest rate (as a percent) 10.95% [10],[12],[14],[15] 10.95% [10],[12],[14],[15] 10.95% [10],[12],[14],[15] 10.95% [10],[12],[14],[15] 10.95% [10],[12],[14],[15] 11.25% [6],[7],[17],[21] 11.25% [6],[7],[17],[21] 11.25% [6],[7],[17],[21]    
Investment, principal $ 1,432 [10],[13],[14],[15]         $ 1,432 [6],[9],[17],[21]        
Investment, cost 1,424 [10],[14],[15]         1,413 [6],[17],[21]        
Investments at fair value $ 1,454 [10],[14],[15]         $ 1,454 [6],[17],[21]        
Investment, Identifier [Axis]: Harrow, Inc., Pharmaceuticals, First Lien Term Loan 3                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 6.50% [10],[14],[15] 6.50% [10],[14],[15] 6.50% [10],[14],[15] 6.50% [10],[14],[15] 6.50% [10],[14],[15] 6.50% [6],[17],[21] 6.50% [6],[17],[21] 6.50% [6],[17],[21]    
Investment, interest rate (as a percent) 10.95% [10],[12],[14],[15] 10.95% [10],[12],[14],[15] 10.95% [10],[12],[14],[15] 10.95% [10],[12],[14],[15] 10.95% [10],[12],[14],[15] 11.25% [6],[7],[17],[21] 11.25% [6],[7],[17],[21] 11.25% [6],[7],[17],[21]    
Investment, principal $ 7,448 [10],[13],[14],[15]         $ 7,448 [6],[9],[17],[21]        
Investment, cost 7,411 [10],[14],[15]         7,362 [6],[17],[21]        
Investments at fair value $ 7,560 [10],[14],[15]         $ 7,560 [6],[17],[21]        
Investment, Identifier [Axis]: IAMGOLD Corporation, Gold, Second Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 8.25% [10],[14],[15] 8.25% [10],[14],[15] 8.25% [10],[14],[15] 8.25% [10],[14],[15] 8.25% [10],[14],[15] 8.25% [6],[17],[21] 8.25% [6],[17],[21] 8.25% [6],[17],[21]    
Investment, interest rate (as a percent) 12.56% [10],[12],[14],[15] 12.56% [10],[12],[14],[15] 12.56% [10],[12],[14],[15] 12.56% [10],[12],[14],[15] 12.56% [10],[12],[14],[15] 13.37% [6],[7],[17],[21] 13.37% [6],[7],[17],[21] 13.37% [6],[7],[17],[21]    
Investment, principal $ 23,975 [10],[13],[14],[15]         $ 23,975 [6],[9],[17],[21]        
Investment, cost 23,562 [10],[14],[15]         23,454 [6],[17],[21]        
Investments at fair value $ 24,867 [10],[14],[15]         $ 25,054 [6],[17],[21]        
Investment, Identifier [Axis]: INW Manufacturing, LLC, Personal Care Products, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.75% [15] 5.75% [15] 5.75% [15] 5.75% [15] 5.75% [15] 5.75% [21] 5.75% [21] 5.75% [21]    
Investment, interest rate (as a percent) 10.31% [12],[15] 10.31% [12],[15] 10.31% [12],[15] 10.31% [12],[15] 10.31% [12],[15] 10.62% [7],[21] 10.62% [7],[21] 10.62% [7],[21]    
Investment, principal $ 40,219 [13],[15]         $ 42,075 [9],[21]        
Investment, cost 39,486 [15]         40,978 [21]        
Investments at fair value $ 36,763 [15]         $ 35,343 [21]        
Investment, Identifier [Axis]: IPC Corp., Application Software, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 6.50% [10],[15] 6.50% [10],[15] 6.50% [10],[15] 6.50% [10],[15] 6.50% [10],[15] 6.50% [6],[21] 6.50% [6],[21] 6.50% [6],[21]    
Investment, interest rate (as a percent) 9.93% [10],[12],[15] 9.93% [10],[12],[15] 9.93% [10],[12],[15] 9.93% [10],[12],[15] 9.93% [10],[12],[15] 11.97% [6],[7],[21] 11.97% [6],[7],[21] 11.97% [6],[7],[21]    
Investment, interest rate, paid in kind (as a percent) [10],[15] 1.00% 1.00% 1.00% 1.00% 1.00%          
Investment, principal $ 36,262 [10],[13],[15]         $ 36,029 [6],[9],[21]        
Investment, cost 36,021 [10],[15]         35,643 [6],[21]        
Investments at fair value $ 35,265 [10],[15]         $ 35,668 [6],[21]        
Investment, Identifier [Axis]: Icefall Parent, Inc., Application Software, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.75% [10],[11],[15] 5.75% [10],[11],[15] 5.75% [10],[11],[15] 5.75% [10],[11],[15] 5.75% [10],[11],[15] 6.50% [5],[6],[21] 6.50% [5],[6],[21] 6.50% [5],[6],[21]    
Investment, principal $ 0 [10],[11],[13],[15]         $ 0 [5],[6],[9],[21]        
Investment, cost (15) [10],[11],[15]         (18) [5],[6],[21]        
Investments at fair value $ 0 [10],[11],[15]         $ (7) [5],[6],[21]        
Investment, Identifier [Axis]: Icefall Parent, Inc., Application Software, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.75% [10],[15] 5.75% [10],[15] 5.75% [10],[15] 5.75% [10],[15] 5.75% [10],[15] 6.50% [6],[21] 6.50% [6],[21] 6.50% [6],[21]    
Investment, interest rate (as a percent) 10.03% [10],[12],[15] 10.03% [10],[12],[15] 10.03% [10],[12],[15] 10.03% [10],[12],[15] 10.03% [10],[12],[15] 11.35% [6],[7],[21] 11.35% [6],[7],[21] 11.35% [6],[7],[21]    
Investment, principal $ 10,446 [10],[13],[15]         $ 10,446 [6],[9],[21]        
Investment, cost 10,287 [10],[15]         10,261 [6],[21]        
Investments at fair value $ 10,446 [10],[15]         $ 10,372 [6],[21]        
Investment, Identifier [Axis]: Innocoll Pharmaceuticals Limited, Health Care Technology, Warrants                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares [6],[17]           112,990 112,990 112,990    
Investment, cost [6],[17]           $ 300        
Investments at fair value [6],[17]           $ 0        
Investment, Identifier [Axis]: Integrity Marketing Acquisition, LLC, Insurance Brokers, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.00% [10],[11],[15] 5.00% [10],[11],[15] 5.00% [10],[11],[15] 5.00% [10],[11],[15] 5.00% [10],[11],[15] 5.00% [5],[6],[21] 5.00% [5],[6],[21] 5.00% [5],[6],[21]    
Investment, principal $ 0 [10],[11],[13],[15]         $ 0 [5],[6],[9],[21]        
Investment, cost (20) [10],[11],[15]         (25) [5],[6],[21]        
Investments at fair value $ (5) [10],[11],[15]         $ (26) [5],[6],[21]        
Investment, Identifier [Axis]: Integrity Marketing Acquisition, LLC, Insurance Brokers, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.00% [10],[15] 5.00% [10],[15] 5.00% [10],[15] 5.00% [10],[15] 5.00% [10],[15] 5.00% [6],[21] 5.00% [6],[21] 5.00% [6],[21]    
Investment, interest rate (as a percent) 9.33% [10],[12],[15] 9.33% [10],[12],[15] 9.33% [10],[12],[15] 9.33% [10],[12],[15] 9.33% [10],[12],[15] 10.08% [6],[7],[21] 10.08% [6],[7],[21] 10.08% [6],[7],[21]    
Investment, principal $ 26,120 [10],[13],[15]         $ 19,559 [6],[9],[21]        
Investment, cost 25,967 [10],[15]         19,368 [6],[21]        
Investments at fair value $ 26,068 [10],[15]         $ 19,363 [6],[21]        
Investment, Identifier [Axis]: Integrity Marketing Acquisition, LLC, Insurance Brokers, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.00% [10],[11],[15] 5.00% [10],[11],[15] 5.00% [10],[11],[15] 5.00% [10],[11],[15] 5.00% [10],[11],[15] 5.00% [5],[6],[21] 5.00% [5],[6],[21] 5.00% [5],[6],[21]    
Investment, principal [10],[11],[13],[15] $ 0                  
Investment, cost (54) [10],[11],[15]         $ (68) [5],[6],[21]        
Investments at fair value $ (14) [10],[11],[15]         $ (66) [5],[6],[21]        
Investment, Identifier [Axis]: Inventus Power, Inc., Electrical Components & Equipment, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 7.50% [10],[11],[15] 7.50% [10],[11],[15] 7.50% [10],[11],[15] 7.50% [10],[11],[15] 7.50% [10],[11],[15] 7.50% [5],[6],[21] 7.50% [5],[6],[21] 7.50% [5],[6],[21]    
Investment, interest rate (as a percent) [10],[11],[12],[15] 11.93% 11.93% 11.93% 11.93% 11.93%          
Investment, principal $ 632 [10],[11],[13],[15]         $ 0 [5],[6],[9],[21]        
Investment, cost 608 [10],[11],[15]         (42) [5],[6],[21]        
Investments at fair value $ 575 [10],[11],[15]         $ (86) [5],[6],[21]        
Investment, Identifier [Axis]: Inventus Power, Inc., Electrical Components & Equipment, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 7.50% [10],[15] 7.50% [10],[15] 7.50% [10],[15] 7.50% [10],[15] 7.50% [10],[15] 7.50% [6],[21] 7.50% [6],[21] 7.50% [6],[21]    
Investment, interest rate (as a percent) 11.94% [10],[12],[15] 11.94% [10],[12],[15] 11.94% [10],[12],[15] 11.94% [10],[12],[15] 11.94% [10],[12],[15] 12.46% [6],[7],[21] 12.46% [6],[7],[21] 12.46% [6],[7],[21]    
Investment, principal $ 32,828 [10],[13],[15]         $ 33,079 [6],[9],[21]        
Investment, cost 32,784 [10],[15]         32,876 [6],[21]        
Investments at fair value 32,336 [10],[15]         32,332 [6],[21]        
Investment, Identifier [Axis]: JN Bidco LLC, Health Care Technology, Common Stock                    
Schedule of Investments [Line Items]                    
Investment, cost 9,179 [10]         9,886 [6]        
Investments at fair value 18,982 [10]         9,886 [6]        
Investment, Identifier [Axis]: JP Morgan Prime Money Market Fund, Institutional Shares                    
Schedule of Investments [Line Items]                    
Investment, cost 19,679         34,597        
Investments at fair value $ 19,679         $ 34,597        
Investment, Identifier [Axis]: KKR Financial CLO Ltd, Multi-Sector Holdings, CLO Notes                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [14],[15] 7.10% 7.10% 7.10% 7.10% 7.10%          
Investment, interest rate (as a percent) [12],[14],[15] 11.36% 11.36% 11.36% 11.36% 11.36%          
Investment, principal [13],[14],[15] $ 2,000                  
Investment, cost [14],[15] 2,057                  
Investments at fair value [14],[15] $ 2,006                  
Investment, Identifier [Axis]: Kaseya Inc., Systems Software, Second Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [15] 5.00% 5.00% 5.00% 5.00% 5.00%          
Investment, interest rate (as a percent) [12],[15] 9.33% 9.33% 9.33% 9.33% 9.33%          
Investment, principal [13],[15] $ 10,876                  
Investment, cost [15] 10,822                  
Investments at fair value [15] $ 10,915                  
Investment, Identifier [Axis]: Kings Buyer, LLC, Environmental & Facilities Services, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[11],[15] 4.25% 4.25% 4.25% 4.25% 4.25%          
Investment, interest rate (as a percent) [10],[11],[12],[15] 11.75% 11.75% 11.75% 11.75% 11.75%          
Investment, principal [10],[11],[13],[15] $ 2,911                  
Investment, cost [10],[11],[15] 2,829                  
Investments at fair value [10],[11],[15] $ 2,554                  
Investment, Identifier [Axis]: Kings Buyer, LLC, Environmental & Facilities Services, First Lien Revolver 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [5],[6],[21]           4.00% 4.00% 4.00%    
Investment, interest rate (as a percent) [5],[6],[7],[21]           12.50% 12.50% 12.50%    
Investment, principal [5],[6],[9],[21]           $ 1,259        
Investment, cost [5],[6],[21]           1,223        
Investments at fair value [5],[6],[21]           $ 1,216        
Investment, Identifier [Axis]: Kings Buyer, LLC, Environmental & Facilities Services, First Lien Revolver 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [5],[6],[21]           4.00% 4.00% 4.00%    
Investment, interest rate (as a percent) [5],[6],[7],[21]           12.00% 12.00% 12.00%    
Investment, principal [5],[6],[9],[21]           $ 926        
Investment, cost [5],[6],[21]           901        
Investments at fair value [5],[6],[21]           $ 894        
Investment, Identifier [Axis]: Kings Buyer, LLC, Environmental & Facilities Services, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.25% [10],[15] 5.25% [10],[15] 5.25% [10],[15] 5.25% [10],[15] 5.25% [10],[15] 5.00% [6],[21] 5.00% [6],[21] 5.00% [6],[21]    
Investment, interest rate (as a percent) 9.65% [10],[12],[15] 9.65% [10],[12],[15] 9.65% [10],[12],[15] 9.65% [10],[12],[15] 9.65% [10],[12],[15] 9.95% [6],[7],[21] 9.95% [6],[7],[21] 9.95% [6],[7],[21]    
Investment, principal $ 37,445 [10],[13],[15]         $ 37,635 [6],[9],[21]        
Investment, cost 37,125 [10],[15]         37,211 [6],[21]        
Investments at fair value $ 35,838 [10],[15]         $ 37,123 [6],[21]        
Investment, Identifier [Axis]: Kings Buyer, LLC, Environmental & Facilities Services, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.25% [10],[15] 5.25% [10],[15] 5.25% [10],[15] 5.25% [10],[15] 5.25% [10],[15] 5.00% [6],[21] 5.00% [6],[21] 5.00% [6],[21]    
Investment, interest rate (as a percent) 9.65% [10],[12],[15] 9.65% [10],[12],[15] 9.65% [10],[12],[15] 9.65% [10],[12],[15] 9.65% [10],[12],[15] 10.68% [6],[7],[21] 10.68% [6],[7],[21] 10.68% [6],[7],[21]    
Investment, principal $ 16,467 [10],[13],[15]         $ 16,552 [6],[9],[21]        
Investment, cost 16,417 [10],[15]         16,423 [6],[21]        
Investments at fair value $ 15,760 [10],[15]         $ 16,327 [6],[21]        
Investment, Identifier [Axis]: Kite Midco II Inc., Research & Consulting Services, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[15] 5.00% 5.00% 5.00% 5.00% 5.00%          
Investment, interest rate (as a percent) [10],[12],[15] 9.27% 9.27% 9.27% 9.27% 9.27%          
Investment, principal [10],[13],[15] $ 9,644                  
Investment, cost [10],[15] 9,511                  
Investments at fair value [10],[15] $ 9,503                  
Investment, Identifier [Axis]: Kite Midco II Inc., Research & Consulting Services, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[11],[15] 5.00% 5.00% 5.00% 5.00% 5.00%          
Investment, principal [10],[11],[13],[15] $ 0                  
Investment, cost [10],[11],[15] (16)                  
Investments at fair value [10],[11],[15] $ (17)                  
Investment, Identifier [Axis]: LABL, Inc., Office Services & Supplies, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.00% [15] 5.00% [15] 5.00% [15] 5.00% [15] 5.00% [15] 5.00% [21] 5.00% [21] 5.00% [21]    
Investment, interest rate (as a percent) 9.43% [12],[15] 9.43% [12],[15] 9.43% [12],[15] 9.43% [12],[15] 9.43% [12],[15] 9.95% [7],[21] 9.95% [7],[21] 9.95% [7],[21]    
Investment, principal $ 12,876 [13],[15]         $ 19,351 [9],[21]        
Investment, cost 12,625 [15]         18,861 [21]        
Investments at fair value $ 11,645 [15]         $ 18,953 [21]        
Investment, Identifier [Axis]: LDS Buyer, LLC, Air Freight & Logistics, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[11],[15] 5.00% 5.00% 5.00% 5.00% 5.00%          
Investment, principal [10],[11],[13],[15] $ 0                  
Investment, cost [10],[11],[15] (24)                  
Investments at fair value [10],[11],[15] $ (24)                  
Investment, Identifier [Axis]: LDS Buyer, LLC, Air Freight & Logistics, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[15] 5.00% 5.00% 5.00% 5.00% 5.00%          
Investment, interest rate (as a percent) [10],[12],[15] 9.33% 9.33% 9.33% 9.33% 9.33%          
Investment, principal [10],[13],[15] $ 13,869                  
Investment, cost [10],[15] 13,705                  
Investments at fair value [10],[15] $ 13,708                  
Investment, Identifier [Axis]: LDS Buyer, LLC, Air Freight & Logistics, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[11],[15] 5.00% 5.00% 5.00% 5.00% 5.00%          
Investment, principal [10],[11],[13],[15] $ 0                  
Investment, cost [10],[11],[15] (16)                  
Investments at fair value [10],[11],[15] $ (16)                  
Investment, Identifier [Axis]: LSL Holdco, LLC, Health Care Distributors, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 6.00% [10],[11],[15] 6.00% [10],[11],[15] 6.00% [10],[11],[15] 6.00% [10],[11],[15] 6.00% [10],[11],[15] 6.00% [5],[6],[21] 6.00% [5],[6],[21] 6.00% [5],[6],[21]    
Investment, interest rate (as a percent) 10.43% [10],[11],[12],[15] 10.43% [10],[11],[12],[15] 10.43% [10],[11],[12],[15] 10.43% [10],[11],[12],[15] 10.43% [10],[11],[12],[15] 10.95% [5],[6],[7],[21] 10.95% [5],[6],[7],[21] 10.95% [5],[6],[7],[21]    
Investment, principal $ 2,226 [10],[11],[13],[15]         $ 2,014 [5],[6],[9],[21]        
Investment, cost 2,202 [10],[11],[15]         1,982 [5],[6],[21]        
Investments at fair value $ 2,107 [10],[11],[15]         $ 1,849 [5],[6],[21]        
Investment, Identifier [Axis]: LSL Holdco, LLC, Health Care Distributors, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 6.00% [10],[15] 6.00% [10],[15] 6.00% [10],[15] 6.00% [10],[15] 6.00% [10],[15] 6.00% [6],[21] 6.00% [6],[21] 6.00% [6],[21]    
Investment, interest rate (as a percent) 10.43% [10],[12],[15] 10.43% [10],[12],[15] 10.43% [10],[12],[15] 10.43% [10],[12],[15] 10.43% [10],[12],[15] 10.95% [6],[7],[21] 10.95% [6],[7],[21] 10.95% [6],[7],[21]    
Investment, principal $ 2,687 [10],[13],[15]         $ 2,708 [6],[9],[21]        
Investment, cost 2,605 [10],[15]         2,601 [6],[21]        
Investments at fair value $ 2,566 [10],[15]         $ 2,539 [6],[21]        
Investment, Identifier [Axis]: LSL Holdco, LLC, Health Care Distributors, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 6.00% [10],[15] 6.00% [10],[15] 6.00% [10],[15] 6.00% [10],[15] 6.00% [10],[15] 6.00% [6],[21] 6.00% [6],[21] 6.00% [6],[21]    
Investment, interest rate (as a percent) 10.43% [10],[12],[15] 10.43% [10],[12],[15] 10.43% [10],[12],[15] 10.43% [10],[12],[15] 10.43% [10],[12],[15] 10.95% [6],[7],[21] 10.95% [6],[7],[21] 10.95% [6],[7],[21]    
Investment, principal $ 23,077 [10],[13],[15]         $ 23,256 [6],[9],[21]        
Investment, cost 22,863 [10],[15]         22,977 [6],[21]        
Investments at fair value $ 22,038 [10],[15]         $ 21,802 [6],[21]        
Investment, Identifier [Axis]: Latam Airlines Group S.A., Passenger Airlines, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [17],[21]           9.50% 9.50% 9.50%    
Investment, interest rate (as a percent) [7],[17],[21]           14.95% 14.95% 14.95%    
Investment, principal [9],[17],[21]           $ 26,156        
Investment, cost [17],[21]           25,039        
Investments at fair value [17],[21]           $ 26,556        
Investment, Identifier [Axis]: Learfield Communications, LLC, Movies & Entertainment, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 4.50% [15] 4.50% [15] 4.50% [15] 4.50% [15] 4.50% [15] 5.50% [21] 5.50% [21] 5.50% [21]    
Investment, interest rate (as a percent) 8.83% [12],[15] 8.83% [12],[15] 8.83% [12],[15] 8.83% [12],[15] 8.83% [12],[15] 10.35% [7],[21] 10.35% [7],[21] 10.35% [7],[21]    
Investment, principal $ 23,841 [13],[15]         $ 30,856 [9],[21]        
Investment, cost 23,792 [15]         30,779 [21]        
Investments at fair value $ 24,050 [15]         $ 30,863 [21]        
Investment, Identifier [Axis]: Legends Hospitality Holding Company, LLC, Specialized Consumer Services, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.00% [10],[11],[15] 5.00% [10],[11],[15] 5.00% [10],[11],[15] 5.00% [10],[11],[15] 5.00% [10],[11],[15] 5.00% [5],[6],[21] 5.00% [5],[6],[21] 5.00% [5],[6],[21]    
Investment, interest rate (as a percent) [10],[11],[12],[15] 9.32% 9.32% 9.32% 9.32% 9.32%          
Investment, principal $ 1,240 [10],[11],[13],[15]         $ 0 [5],[6],[9],[21]        
Investment, cost 1,187 [10],[11],[15]         (61) [5],[6],[21]        
Investments at fair value $ 1,188 [10],[11],[15]         $ (60) [5],[6],[21]        
Investment, Identifier [Axis]: Legends Hospitality Holding Company, LLC, Specialized Consumer Services, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.50% [10],[15] 5.50% [10],[15] 5.50% [10],[15] 5.50% [10],[15] 5.50% [10],[15] 5.00% [6],[21] 5.00% [6],[21] 5.00% [6],[21]    
Investment, interest rate (as a percent) 7.07% [10],[12],[15] 7.07% [10],[12],[15] 7.07% [10],[12],[15] 7.07% [10],[12],[15] 7.07% [10],[12],[15] 10.13% [6],[7],[21] 10.13% [6],[7],[21] 10.13% [6],[7],[21]    
Investment, interest rate, paid in kind (as a percent) [10],[15] 2.75% 2.75% 2.75% 2.75% 2.75%          
Investment, principal $ 26,779 [10],[13],[15]         $ 26,358 [6],[9],[21]        
Investment, cost 26,319 [10],[15]         25,839 [6],[21]        
Investments at fair value $ 26,324 [10],[15]         $ 25,847 [6],[21]        
Investment, Identifier [Axis]: Legends Hospitality Holding Company, LLC, Specialized Consumer Services, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.00% [5],[6],[21] 5.00% [5],[6],[21] 5.00% [5],[6],[21]    
Investment, principal $ 0 [10],[11],[13],[15]         $ 0 [5],[6],[9],[21]        
Investment, cost (14) [10],[11],[15]         (15) [5],[6],[21]        
Investments at fair value $ 0 [10],[11],[15]         $ (15) [5],[6],[21]        
Investment, Identifier [Axis]: Lightbox Intermediate, L.P., Real Estate Services, First Lien Rvolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[11],[15] 5.50% 5.50% 5.50% 5.50% 5.50%          
Investment, principal [10],[11],[13],[15] $ 0                  
Investment, cost [10],[11],[15] (17)                  
Investments at fair value [10],[11],[15] $ (18)                  
Investment, Identifier [Axis]: Lightbox Intermediate, L.P., Real Estate Services, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.50% [10],[15] 5.50% [10],[15] 5.50% [10],[15] 5.50% [10],[15] 5.50% [10],[15] 5.00% [6],[21] 5.00% [6],[21] 5.00% [6],[21]    
Investment, interest rate (as a percent) 9.74% [10],[12],[15] 9.74% [10],[12],[15] 9.74% [10],[12],[15] 9.74% [10],[12],[15] 9.74% [10],[12],[15] 9.96% [6],[7],[21] 9.96% [6],[7],[21] 9.96% [6],[7],[21]    
Investment, principal $ 19,607 [10],[13],[15]         $ 55,873 [6],[9],[21]        
Investment, cost 19,340 [10],[15]         55,220 [6],[21]        
Investments at fair value $ 19,332 [10],[15]         $ 54,197 [6],[21]        
Investment, Identifier [Axis]: Liquid Environmental Solutions Corporation, Environmental & Facilities Services, Common Stock                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 559 [10] 559 [10] 559 [10] 559 [10] 559 [10] 559 [6] 559 [6] 559 [6]    
Investment, cost $ 563 [10]         $ 563 [6]        
Investments at fair value $ 0 [10]         $ 64 [6]        
Investment, Identifier [Axis]: Liquid Environmental Solutions Corporation, Environmental & Facilities Services, Second Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 8.50% [10],[15] 8.50% [10],[15] 8.50% [10],[15] 8.50% [10],[15] 8.50% [10],[15] 8.50% [6],[21] 8.50% [6],[21] 8.50% [6],[21]    
Investment, interest rate (as a percent) 12.88% [10],[12],[15] 12.88% [10],[12],[15] 12.88% [10],[12],[15] 12.88% [10],[12],[15] 12.88% [10],[12],[15] 13.20% [6],[7],[21] 13.20% [6],[7],[21] 13.20% [6],[7],[21]    
Investment, principal $ 3,167 [10],[13],[15]         $ 3,167 [6],[9],[21]        
Investment, cost 3,122 [10],[15]         3,123 [6],[21]        
Investments at fair value $ 2,993 [10],[15]         $ 2,993 [6],[21]        
Investment, Identifier [Axis]: Liquid Environmental Solutions Corporation, Environmental & Facilities Services, Second Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 8.50% [10],[15] 8.50% [10],[15] 8.50% [10],[15] 8.50% [10],[15] 8.50% [10],[15] 8.50% [6],[21] 8.50% [6],[21] 8.50% [6],[21]    
Investment, interest rate (as a percent) 12.88% [10],[12],[15] 12.88% [10],[12],[15] 12.88% [10],[12],[15] 12.88% [10],[12],[15] 12.88% [10],[12],[15] 13.20% [6],[7],[21] 13.20% [6],[7],[21] 13.20% [6],[7],[21]    
Investment, principal $ 5,822 [10],[13],[15]         $ 5,822 [6],[9],[21]        
Investment, cost 5,798 [10],[15]         5,785 [6],[21]        
Investments at fair value $ 5,502 [10],[15]         $ 5,502 [6],[21]        
Investment, Identifier [Axis]: Liquid Environmental Solutions Corporation, Environmental & Facilities Services, Second Lien Term Loan 3                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[15] 8.50% 8.50% 8.50% 8.50% 8.50%          
Investment, interest rate (as a percent) [10],[12],[15] 12.88% 12.88% 12.88% 12.88% 12.88%          
Investment, principal [10],[13],[15] $ 504                  
Investment, cost [10],[15] 500                  
Investments at fair value [10],[15] $ 477                  
Investment, Identifier [Axis]: MHE Intermediate Holdings, LLC, Diversified Support Services, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 6.00% [10],[11],[15] 6.00% [10],[11],[15] 6.00% [10],[11],[15] 6.00% [10],[11],[15] 6.00% [10],[11],[15] 6.00% [5],[6],[21] 6.00% [5],[6],[21] 6.00% [5],[6],[21]    
Investment, interest rate (as a percent) [10],[11],[12],[15] 10.43% 10.43% 10.43% 10.43% 10.43%          
Investment, principal $ 714 [10],[11],[13],[15]         $ 0 [5],[6],[9],[21]        
Investment, cost 699 [10],[11],[15]         (21) [5],[6],[21]        
Investments at fair value $ 688 [10],[11],[15]         $ (24) [5],[6],[21]        
Investment, Identifier [Axis]: MHE Intermediate Holdings, LLC, Diversified Support Services, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 6.00% [10],[15] 6.00% [10],[15] 6.00% [10],[15] 6.00% [10],[15] 6.00% [10],[15] 6.00% [6],[21] 6.00% [6],[21] 6.00% [6],[21]    
Investment, interest rate (as a percent) 10.43% [10],[12],[15] 10.43% [10],[12],[15] 10.43% [10],[12],[15] 10.43% [10],[12],[15] 10.43% [10],[12],[15] 11.40% [6],[7],[21] 11.40% [6],[7],[21] 11.40% [6],[7],[21]    
Investment, principal $ 2,584 [10],[13],[15]         $ 2,604 [6],[9],[21]        
Investment, cost 2,555 [10],[15]         2,561 [6],[21]        
Investments at fair value $ 2,545 [10],[15]         $ 2,568 [6],[21]        
Investment, Identifier [Axis]: MHE Intermediate Holdings, LLC, Diversified Support Services, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 6.00% [10],[15] 6.00% [10],[15] 6.00% [10],[15] 6.00% [10],[15] 6.00% [10],[15] 6.00% [6],[21] 6.00% [6],[21] 6.00% [6],[21]    
Investment, interest rate (as a percent) 10.43% [10],[12],[15] 10.43% [10],[12],[15] 10.43% [10],[12],[15] 10.43% [10],[12],[15] 10.43% [10],[12],[15] 11.40% [6],[7],[21] 11.40% [6],[7],[21] 11.40% [6],[7],[21]    
Investment, principal $ 7,224 [10],[13],[15]         $ 7,224 [6],[9],[21]        
Investment, cost 7,183 [10],[15]         7,167 [6],[21]        
Investments at fair value $ 7,116 [10],[15]         $ 7,125 [6],[21]        
Investment, Identifier [Axis]: MRI Software LLC, Application Software, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 4.75% [10],[11],[15] 4.75% [10],[11],[15] 4.75% [10],[11],[15] 4.75% [10],[11],[15] 4.75% [10],[11],[15] 4.75% [5],[6],[21] 4.75% [5],[6],[21] 4.75% [5],[6],[21]    
Investment, interest rate (as a percent) [10],[11],[12],[15] 9.05% 9.05% 9.05% 9.05% 9.05%          
Investment, principal $ 253 [10],[11],[13],[15]         $ 0 [5],[6],[9],[21]        
Investment, cost 203 [10],[11],[15]         (69) [5],[6],[21]        
Investments at fair value $ 222 [10],[11],[15]         $ (44) [5],[6],[21]        
Investment, Identifier [Axis]: MRI Software LLC, Application Software, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 4.75% [10],[15] 4.75% [10],[15] 4.75% [10],[15] 4.75% [10],[15] 4.75% [10],[15] 4.75% [6],[21] 4.75% [6],[21] 4.75% [6],[21]    
Investment, interest rate (as a percent) 9.05% [10],[12],[15] 9.05% [10],[12],[15] 9.05% [10],[12],[15] 9.05% [10],[12],[15] 9.05% [10],[12],[15] 9.35% [6],[7],[21] 9.35% [6],[7],[21] 9.35% [6],[7],[21]    
Investment, principal $ 40,951 [10],[13],[15]         $ 33,831 [6],[9],[21]        
Investment, cost 40,727 [10],[15]         33,438 [6],[21]        
Investments at fair value $ 40,677 [10],[15]         $ 33,503 [6],[21]        
Investment, Identifier [Axis]: MRI Software LLC, Application Software, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 4.75% [10],[15] 4.75% [10],[15] 4.75% [10],[15] 4.75% [10],[15] 4.75% [10],[15] 4.75% [6],[21] 4.75% [6],[21] 4.75% [6],[21]    
Investment, interest rate (as a percent) 9.05% [10],[12],[15] 9.05% [10],[12],[15] 9.05% [10],[12],[15] 9.05% [10],[12],[15] 9.05% [10],[12],[15] 9.35% [6],[7],[21] 9.35% [6],[7],[21] 9.35% [6],[7],[21]    
Investment, principal $ 13,721 [10],[13],[15]         $ 13,829 [6],[9],[21]        
Investment, cost 13,702 [10],[15]         13,797 [6],[21]        
Investments at fair value $ 13,629 [10],[15]         $ 13,695 [6],[21]        
Investment, Identifier [Axis]: MRI Software LLC, Application Software, First Lien Term Loan 3                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 4.75% [10],[11],[15] 4.75% [10],[11],[15] 4.75% [10],[11],[15] 4.75% [10],[11],[15] 4.75% [10],[11],[15] 4.75% [6],[21] 4.75% [6],[21] 4.75% [6],[21]    
Investment, interest rate (as a percent) 9.05% [10],[11],[12],[15] 9.05% [10],[11],[12],[15] 9.05% [10],[11],[12],[15] 9.05% [10],[11],[12],[15] 9.05% [10],[11],[12],[15] 9.35% [6],[7],[21] 9.35% [6],[7],[21] 9.35% [6],[7],[21]    
Investment, principal $ 1,967 [10],[11],[13],[15]         $ 6,652 [6],[9],[21]        
Investment, cost 1,947 [10],[11],[15]         6,609 [6],[21]        
Investments at fair value $ 1,951 [10],[11],[15]         $ 6,588 [6],[21]        
Investment, Identifier [Axis]: MRI Software LLC, Application Software, First Lien Term Loan 4                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [5],[6],[21]           4.75% 4.75% 4.75%    
Investment, interest rate (as a percent) [5],[6],[7],[21]           9.35% 9.35% 9.35%    
Investment, principal [5],[6],[9],[21]           $ 792        
Investment, cost [5],[6],[21]           776        
Investments at fair value [5],[6],[21]           $ 760        
Investment, Identifier [Axis]: Marinus Pharmaceuticals, Inc., Pharmaceuticals, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, interest rate (as a percent) [6],[7],[17]           11.50% 11.50% 11.50%    
Investment, principal [6],[9],[17]           $ 8,139        
Investment, cost [6],[17]           8,096        
Investments at fair value [6],[17]           $ 7,773        
Investment, Identifier [Axis]: Marinus Pharmaceuticals, Inc., Pharmaceuticals, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, interest rate (as a percent) [6],[7],[17]           11.50% 11.50% 11.50%    
Investment, principal [6],[9],[17]           $ 3,855        
Investment, cost [6],[17]           3,835        
Investments at fair value [6],[17]           $ 3,682        
Investment, Identifier [Axis]: Marinus Pharmaceuticals, Inc., Pharmaceuticals, First Lien Term Loan 3                    
Schedule of Investments [Line Items]                    
Investment, interest rate (as a percent) [6],[7],[17]           11.50% 11.50% 11.50%    
Investment, principal [6],[9],[17]           $ 4,070        
Investment, cost [6],[17]           4,048        
Investments at fair value [6],[17]           $ 3,886        
Investment, Identifier [Axis]: Mesoblast, Inc., Biotechnology, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, interest rate (as a percent) 9.75% [10],[12],[14] 9.75% [10],[12],[14] 9.75% [10],[12],[14] 9.75% [10],[12],[14] 9.75% [10],[12],[14] 9.75% [6],[7],[17] 9.75% [6],[7],[17] 9.75% [6],[7],[17]    
Investment, principal $ 6,511 [10],[13],[14]         $ 7,660 [6],[9],[17]        
Investment, cost 6,345 [10],[14]         7,359 [6],[17]        
Investments at fair value $ 6,576 [10],[14]         $ 7,373 [6],[17]        
Investment, Identifier [Axis]: Mesoblast, Inc., Biotechnology, Warrants                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares [10],[14] 129,939 129,939 129,939 129,939 129,939          
Investment, cost [10],[14] $ 545                  
Investments at fair value [10],[14] $ 546                  
Investment, Identifier [Axis]: Mesoblast, Inc., Biotechnology, Warrants 1                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares [6],[17]           33,409 33,409 33,409    
Investment, cost [6],[17]           $ 23        
Investments at fair value [6],[17]           $ 154        
Investment, Identifier [Axis]: Mesoblast, Inc., Biotechnology, Warrants 2                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares [6],[17]           129,939 129,939 129,939    
Investment, cost [6],[17]           $ 545        
Investments at fair value [6],[17]           $ 416        
Investment, Identifier [Axis]: Mindbody, Inc., Internet Services & Infrastructure, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 7.00% [10],[11],[15] 7.00% [10],[11],[15] 7.00% [10],[11],[15] 7.00% [10],[11],[15] 7.00% [10],[11],[15] 7.00% [5],[6],[21] 7.00% [5],[6],[21] 7.00% [5],[6],[21]    
Investment, principal $ 0 [10],[11],[13],[15]         $ 0 [5],[6],[9],[21]        
Investment, cost 0 [10],[11],[15]         (21) [5],[6],[21]        
Investments at fair value $ 0 [10],[11],[15]         $ (56) [5],[6],[21]        
Investment, Identifier [Axis]: Mindbody, Inc., Internet Services & Infrastructure, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 7.00% [10],[15] 7.00% [10],[15] 7.00% [10],[15] 7.00% [10],[15] 7.00% [10],[15] 7.00% [6],[21] 7.00% [6],[21] 7.00% [6],[21]    
Investment, interest rate (as a percent) 11.29% [10],[12],[15] 11.29% [10],[12],[15] 11.29% [10],[12],[15] 11.29% [10],[12],[15] 11.29% [10],[12],[15] 12.40% [6],[7],[21] 12.40% [6],[7],[21] 12.40% [6],[7],[21]    
Investment, principal $ 39,221 [10],[13],[15]         $ 51,356 [6],[9],[21]        
Investment, cost 39,033 [10],[15]         51,142 [6],[21]        
Investments at fair value $ 39,221 [10],[15]         $ 50,806 [6],[21]        
Investment, Identifier [Axis]: Mindbody, Inc., Internet Services & Infrastructure, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 7.00% [10],[15] 7.00% [10],[15] 7.00% [10],[15] 7.00% [10],[15] 7.00% [10],[15] 7.00% [6],[21] 7.00% [6],[21] 7.00% [6],[21]    
Investment, interest rate (as a percent) 11.29% [10],[12],[15] 11.29% [10],[12],[15] 11.29% [10],[12],[15] 11.29% [10],[12],[15] 11.29% [10],[12],[15] 12.40% [6],[7],[21] 12.40% [6],[7],[21] 12.40% [6],[7],[21]    
Investment, principal $ 1,752 [10],[13],[15]         $ 2,294 [6],[9],[21]        
Investment, cost 1,713 [10],[15]         2,255 [6],[21]        
Investments at fair value $ 1,752 [10],[15]         $ 2,269 [6],[21]        
Investment, Identifier [Axis]: Minotaur Acquisition, Inc., Financial Exchanges & Data, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.00% [10],[11],[14],[15] 5.00% [10],[11],[14],[15] 5.00% [10],[11],[14],[15] 5.00% [10],[11],[14],[15] 5.00% [10],[11],[14],[15] 5.00% [5],[6],[21] 5.00% [5],[6],[21] 5.00% [5],[6],[21]    
Investment, principal $ 0 [10],[11],[13],[14],[15]         $ 0 [5],[6],[9],[21]        
Investment, cost (12) [10],[11],[14],[15]         (13) [5],[6],[21]        
Investments at fair value $ (4) [10],[11],[14],[15]         $ (12) [5],[6],[21]        
Investment, Identifier [Axis]: Minotaur Acquisition, Inc., Financial Exchanges & Data, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.00% [10],[14],[15] 5.00% [10],[14],[15] 5.00% [10],[14],[15] 5.00% [10],[14],[15] 5.00% [10],[14],[15] 5.00% [6],[21] 5.00% [6],[21] 5.00% [6],[21]    
Investment, interest rate (as a percent) 9.33% [10],[12],[14],[15] 9.33% [10],[12],[14],[15] 9.33% [10],[12],[14],[15] 9.33% [10],[12],[14],[15] 9.33% [10],[12],[14],[15] 9.85% [6],[7],[21] 9.85% [6],[7],[21] 9.85% [6],[7],[21]    
Investment, principal $ 6,983 [10],[13],[14],[15]         $ 7,056 [6],[9],[21]        
Investment, cost 6,868 [10],[14],[15]         6,923 [6],[21]        
Investments at fair value $ 6,948 [10],[14],[15]         $ 6,932 [6],[21]        
Investment, Identifier [Axis]: Minotaur Acquisition, Inc., Financial Exchanges & Data, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.00% [10],[11],[14],[15] 5.00% [10],[11],[14],[15] 5.00% [10],[11],[14],[15] 5.00% [10],[11],[14],[15] 5.00% [10],[11],[14],[15] 5.00% [5],[6],[21] 5.00% [5],[6],[21] 5.00% [5],[6],[21]    
Investment, principal $ 0 [10],[11],[13],[14],[15]         $ 0 [5],[6],[9],[21]        
Investment, cost (12) [10],[11],[14],[15]         (12) [5],[6],[21]        
Investments at fair value $ (6) [10],[11],[14],[15]         $ (11) [5],[6],[21]        
Investment, Identifier [Axis]: Minotaur Acquisition, Inc., Financial Exchanges & Data, First Lien Term Loan 3                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.00% [10],[14],[15] 5.00% [10],[14],[15] 5.00% [10],[14],[15] 5.00% [10],[14],[15] 5.00% [10],[14],[15] 5.00% [6],[21] 5.00% [6],[21] 5.00% [6],[21]    
Investment, interest rate (as a percent) 9.33% [10],[12],[14],[15] 9.33% [10],[12],[14],[15] 9.33% [10],[12],[14],[15] 9.33% [10],[12],[14],[15] 9.33% [10],[12],[14],[15] 9.85% [6],[7],[21] 9.85% [6],[7],[21] 9.85% [6],[7],[21]    
Investment, principal $ 1,149 [10],[13],[14],[15]         $ 1,176 [6],[9],[21]        
Investment, cost 1,126 [10],[14],[15]         1,152 [6],[21]        
Investments at fair value $ 1,143 [10],[14],[15]         $ 1,156 [6],[21]        
Investment, Identifier [Axis]: Modena Buyer LLC, Application Software, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 4.50% [15] 4.50% [15] 4.50% [15] 4.50% [15] 4.50% [15] 4.50% [21] 4.50% [21] 4.50% [21]    
Investment, interest rate (as a percent) 8.78% [12],[15] 8.78% [12],[15] 8.78% [12],[15] 8.78% [12],[15] 8.78% [12],[15] 9.10% [7],[21] 9.10% [7],[21] 9.10% [7],[21]    
Investment, principal $ 23,694 [13],[15]         $ 27,705 [9],[21]        
Investment, cost 23,286 [15]         27,169 [21]        
Investments at fair value $ 22,880 [15]         $ 26,588 [21]        
Investment, Identifier [Axis]: Monotype Imaging Holdings Inc., Application Software, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [5],[6],[21] 5.50% [5],[6],[21] 5.50% [5],[6],[21]    
Investment, principal $ 0 [10],[11],[13],[15]         $ 0 [5],[6],[9],[21]        
Investment, cost (56) [10],[11],[15]         (65) [5],[6],[21]        
Investments at fair value $ 0 [10],[11],[15]         $ 0 [5],[6],[21]        
Investment, Identifier [Axis]: Monotype Imaging Holdings Inc., Application Software, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.50% [10],[15] 5.50% [10],[15] 5.50% [10],[15] 5.50% [10],[15] 5.50% [10],[15] 5.50% [6],[21] 5.50% [6],[21] 5.50% [6],[21]    
Investment, interest rate (as a percent) 9.80% [10],[12],[15] 9.80% [10],[12],[15] 9.80% [10],[12],[15] 9.80% [10],[12],[15] 9.80% [10],[12],[15] 10.56% [6],[7],[21] 10.56% [6],[7],[21] 10.56% [6],[7],[21]    
Investment, principal $ 38,038 [10],[13],[15]         $ 38,326 [6],[9],[21]        
Investment, cost 37,467 [10],[15]         37,751 [6],[21]        
Investments at fair value $ 38,038 [10],[15]         $ 38,326 [6],[21]        
Investment, Identifier [Axis]: Monotype Imaging Holdings Inc., Application Software, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [5],[6],[21] 5.50% [5],[6],[21] 5.50% [5],[6],[21]    
Investment, interest rate (as a percent) [10],[11],[12],[15] 9.80% 9.80% 9.80% 9.80% 9.80%          
Investment, principal $ 824 [10],[11],[13],[15]         $ 0 [5],[6],[9],[21]        
Investment, cost 793 [10],[11],[15]         (24) [5],[6],[21]        
Investments at fair value $ 824 [10],[11],[15]         $ 0 [5],[6],[21]        
Investment, Identifier [Axis]: Mosaic Companies, LLC, Home Improvement Retail, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 8.25% [10],[15],[19] 8.25% [10],[15],[19] 8.25% [10],[15],[19] 8.25% [10],[15],[19] 8.25% [10],[15],[19] 8.25% [6],[21] 8.25% [6],[21] 8.25% [6],[21]    
Investment, interest rate (as a percent) [6],[7],[21]           10.58% 10.58% 10.58%    
Investment, interest rate, paid in kind (as a percent) [6],[21]           3.25% 3.25% 3.25%    
Investment, principal $ 26,503 [10],[13],[15],[19]         $ 50,077 [6],[9],[21]        
Investment, cost 24,713 [10],[15],[19]         49,891 [6],[21]        
Investments at fair value $ 5,314 [10],[15],[19]         $ 48,775 [6],[21]        
Investment, Identifier [Axis]: NN, Inc., Industrial Machinery & Supplies & Components, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [6],[17],[21]           8.88% 8.88% 8.88%    
Investment, interest rate (as a percent) [6],[7],[17],[21]           11.82% 11.82% 11.82%    
Investment, interest rate, paid in kind (as a percent) [6],[17],[21]           2.00% 2.00% 2.00%    
Investment, principal [6],[9],[17],[21]           $ 56,701        
Investment, cost [6],[17],[21]           56,248        
Investments at fair value [6],[17],[21]           $ 55,737        
Investment, Identifier [Axis]: NN, Inc., Industrial Machinery & Supplies & Components, Warrants 1                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 487,870 [14] 487,870 [14] 487,870 [14] 487,870 [14] 487,870 [14] 487,870 [17] 487,870 [17] 487,870 [17]    
Investment, cost $ 0 [14]         $ 0 [17]        
Investments at fair value $ 1,020 [14]         $ 1,898 [17]        
Investment, Identifier [Axis]: NN, Inc., Industrial Machinery & Supplies & Components, Warrants 2                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 239,590 [14] 239,590 [14] 239,590 [14] 239,590 [14] 239,590 [14] 239,590 [17] 239,590 [17] 239,590 [17]    
Investment, cost $ 0 [14]         $ 0 [17]        
Investments at fair value $ 501 [14]         $ 932 [17]        
Investment, Identifier [Axis]: Nellson Nutraceutical, LLC, Packaged Foods & Meats, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[11],[14],[15] 4.75% 4.75% 4.75% 4.75% 4.75%          
Investment, interest rate (as a percent) [10],[11],[12],[14],[15] 12.25% 12.25% 12.25% 12.25% 12.25%          
Investment, principal [10],[11],[13],[14],[15] $ 513                  
Investment, cost [10],[11],[14],[15] 484                  
Investments at fair value [10],[11],[14],[15] $ 485                  
Investment, Identifier [Axis]: Nellson Nutraceutical, LLC, Packaged Foods & Meats, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[14],[15] 5.75% 5.75% 5.75% 5.75% 5.75%          
Investment, interest rate (as a percent) [10],[12],[14],[15] 10.05% 10.05% 10.05% 10.05% 10.05%          
Investment, principal [10],[13],[14],[15] $ 2,866                  
Investment, cost [10],[14],[15] 2,824                  
Investments at fair value [10],[14],[15] $ 2,826                  
Investment, Identifier [Axis]: Nellson Nutraceutical, LLC, Packaged Foods & Meats, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[14],[15] 5.75% 5.75% 5.75% 5.75% 5.75%          
Investment, interest rate (as a percent) [10],[12],[14],[15] 10.03% 10.03% 10.03% 10.03% 10.03%          
Investment, principal [10],[13],[14],[15] $ 9,655                  
Investment, cost [10],[14],[15] 9,515                  
Investments at fair value [10],[14],[15] $ 9,520                  
Investment, Identifier [Axis]: Nellson Nutraceutical, LLC, Packaged Foods & Meats, First Lien Term Loan 3                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[11],[14],[15] 5.75% 5.75% 5.75% 5.75% 5.75%          
Investment, principal [10],[11],[13],[14],[15] $ 0                  
Investment, cost [10],[11],[14],[15] (6)                  
Investments at fair value [10],[11],[14],[15] $ (5)                  
Investment, Identifier [Axis]: NeuAG, LLC, Fertilizers & Agricultural Chemicals, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [6],[21]           2.25% 2.25% 2.25%    
Investment, interest rate (as a percent) [6],[7],[21]           6.85% 6.85% 6.85%    
Investment, principal [6],[9],[21]           $ 55,783        
Investment, cost [6],[21]           54,677        
Investments at fair value [6],[21]           $ 54,668        
Investment, Identifier [Axis]: Next Holdco, LLC, Health Care Technology, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.25% [10],[11],[15] 5.25% [10],[11],[15] 5.25% [10],[11],[15] 5.25% [10],[11],[15] 5.25% [10],[11],[15] 6.00% [5],[6],[21] 6.00% [5],[6],[21] 6.00% [5],[6],[21]    
Investment, principal $ 0 [10],[11],[13],[15]         $ 0 [5],[6],[9],[21]        
Investment, cost (21) [10],[11],[15]         (25) [5],[6],[21]        
Investments at fair value $ (5) [10],[11],[15]         $ 0 [5],[6],[21]        
Investment, Identifier [Axis]: Next Holdco, LLC, Health Care Technology, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [5],[6],[21]           6.00% 6.00% 6.00%    
Investment, Identifier [Axis]: Next Holdco, LLC, Health Care Technology, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.25% [10],[15] 5.25% [10],[15] 5.25% [10],[15] 5.25% [10],[15] 5.25% [10],[15] 6.00% [6],[21] 6.00% [6],[21] 6.00% [6],[21]    
Investment, interest rate (as a percent) 9.55% [10],[12],[15] 9.55% [10],[12],[15] 9.55% [10],[12],[15] 9.55% [10],[12],[15] 9.55% [10],[12],[15] 11.06% [6],[7],[21] 11.06% [6],[7],[21] 11.06% [6],[7],[21]    
Investment, principal $ 19,745 [10],[13],[15]         $ 19,895 [6],[9],[21]        
Investment, cost 19,518 [10],[15]         19,597 [6],[21]        
Investments at fair value $ 19,698 [10],[15]         19,895 [6],[21]        
Investment, Identifier [Axis]: Next Holdco, LLC, Health Care Technology, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[15] 5.25% 5.25% 5.25% 5.25% 5.25%          
Investment, interest rate (as a percent) [10],[12],[15] 9.55% 9.55% 9.55% 9.55% 9.55%          
Investment, principal $ 7,785 [10],[13],[15]         0 [5],[6],[9],[21]        
Investment, cost 7,712 [10],[15]         (38) [5],[6],[21]        
Investments at fair value $ 7,766 [10],[15]         $ 0 [5],[6],[21]        
Investment, Identifier [Axis]: Next Holdco, LLC, Health Care Technology, First Lien Term Loan 3                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[11],[15] 5.25% 5.25% 5.25% 5.25% 5.25%          
Investment, principal [10],[11],[13],[15] $ 0                  
Investment, cost [10],[11],[15] (29)                  
Investments at fair value [10],[11],[15] $ (12)                  
Investment, Identifier [Axis]: Northwoods Capital 25 Ltd, Multi-Sector Holdings, CLO Notes                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 7.40% [14],[15] 7.40% [14],[15] 7.40% [14],[15] 7.40% [14],[15] 7.40% [14],[15] 7.40% [17],[21] 7.40% [17],[21] 7.40% [17],[21]    
Investment, interest rate (as a percent) 11.67% [12],[14],[15] 11.67% [12],[14],[15] 11.67% [12],[14],[15] 11.67% [12],[14],[15] 11.67% [12],[14],[15] 12.68% [7],[17],[21] 12.68% [7],[17],[21] 12.68% [7],[17],[21]    
Investment, principal $ 700 [13],[14],[15]         $ 700 [9],[17],[21]        
Investment, cost 683 [14],[15]         682 [17],[21]        
Investments at fair value $ 695 [14],[15]         $ 681 [17],[21]        
Investment, Identifier [Axis]: OCSI Glick JV LLC, Multi-Sector Holdings, Membership Interest                    
Schedule of Investments [Line Items]                    
Investment owned, ownership (as a percent) 87.50% [11],[14],[27],[28] 87.50% [11],[14],[27],[28] 87.50% [11],[14],[27],[28] 87.50% [11],[14],[27],[28] 87.50% [11],[14],[27],[28] 87.50% [5],[17],[29],[30] 87.50% [5],[17],[29],[30] 87.50% [5],[17],[29],[30] 87.50%  
Investment, cost $ 0 [11],[14],[27],[28]         $ 0 [5],[17],[29],[30]        
Investments at fair value $ 0 [11],[14],[27],[28]         $ 0 [5],[17],[29],[30]     $ 0 0
Investment owned, percent of net assets (as a percent) 0.00% 0.00% 0.00% 0.00% 0.00%       0.00%  
Investment, Identifier [Axis]: OCSI Glick JV LLC, Multi-Sector Holdings, Subordinated Debt                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 4.50% [10],[11],[14],[15],[27] 4.50% [10],[11],[14],[15],[27] 4.50% [10],[11],[14],[15],[27] 4.50% [10],[11],[14],[15],[27] 4.50% [10],[11],[14],[15],[27] 4.50% [5],[6],[17],[21],[29] 4.50% [5],[6],[17],[21],[29] 4.50% [5],[6],[17],[21],[29] 4.50%  
Investment, interest rate (as a percent) 8.93% [10],[11],[12],[14],[15],[27] 8.93% [10],[11],[12],[14],[15],[27] 8.93% [10],[11],[12],[14],[15],[27] 8.93% [10],[11],[12],[14],[15],[27] 8.93% [10],[11],[12],[14],[15],[27] 9.95% [5],[6],[7],[17],[21],[29] 9.95% [5],[6],[7],[17],[21],[29] 9.95% [5],[6],[7],[17],[21],[29] 9.94%  
Investment, principal $ 58,349 [10],[11],[13],[14],[15],[27]         $ 58,349 [5],[6],[9],[17],[21],[29]     $ 58,349  
Investment, cost 52,733 [10],[11],[14],[15],[27]         51,668 [5],[6],[17],[21],[29]        
Investments at fair value $ 47,064 [10],[11],[14],[15],[27]         $ 48,896 [5],[6],[17],[21],[29]     $ 49,886 50,017
Investment owned, percent of net assets (as a percent) 3.20% 3.20% 3.20% 3.20% 3.20%       3.30%  
Investment, Identifier [Axis]: OTG Management, LLC, Airport Services, Common Stock                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 2,613,034 [10] 2,613,034 [10] 2,613,034 [10] 2,613,034 [10] 2,613,034 [10] 2,613,034 [6] 2,613,034 [6] 2,613,034 [6]    
Investment, cost $ 22,330 [10]         $ 22,330 [6]        
Investments at fair value $ 10,008 [10]         $ 13,562 [6]        
Investment, Identifier [Axis]: OTG Management, LLC, Airport Services, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 8.50% [10],[15] 8.50% [10],[15] 8.50% [10],[15] 8.50% [10],[15] 8.50% [10],[15] 9.50% [6],[21] 9.50% [6],[21] 9.50% [6],[21]    
Investment, interest rate, paid in kind (as a percent) 12.81% [10],[15] 12.81% [10],[15] 12.81% [10],[15] 12.81% [10],[15] 12.81% [10],[15] 14.62% [6],[21] 14.62% [6],[21] 14.62% [6],[21]    
Investment, principal $ 13,394 [10],[13],[15]         $ 12,070 [6],[9],[21]        
Investment, cost 12,138 [10],[15]         10,611 [6],[21]        
Investments at fair value $ 13,394 [10],[15]         $ 12,070 [6],[21]        
Investment, Identifier [Axis]: Optimizely North America Inc., Application Software, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[11],[14],[15] 5.00% 5.00% 5.00% 5.00% 5.00%          
Investment, principal [10],[11],[13],[14],[15] $ 0                  
Investment, cost [10],[11],[14],[15] (15)                  
Investments at fair value [10],[11],[14],[15] $ (17)                  
Investment, Identifier [Axis]: Optimizely North America Inc., Application Software, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[14],[15] 5.00% 5.00% 5.00% 5.00% 5.00%          
Investment, interest rate (as a percent) [10],[12],[14],[15] 9.33% 9.33% 9.33% 9.33% 9.33%          
Investment, principal [10],[13],[14],[15] $ 11,358                  
Investment, cost [10],[14],[15] 11,255                  
Investments at fair value [10],[14],[15] $ 11,244                  
Investment, Identifier [Axis]: Optimizely Sweden Holdings AB, Application Software, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[14],[15] 5.25% 5.25% 5.25% 5.25% 5.25%          
Investment, interest rate (as a percent) [10],[12],[14],[15] 7.23% 7.23% 7.23% 7.23% 7.23%          
Investment, principal | € [10],[13],[14],[15]   € 4,058                
Investment, cost [10],[14],[15] $ 4,369                  
Investments at fair value [10],[14],[15] $ 4,716                  
Investment, Identifier [Axis]: Optimizely Sweden Holdings AB, Application Software, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[14],[15] 5.50% 5.50% 5.50% 5.50% 5.50%          
Investment, interest rate (as a percent) [10],[12],[14],[15] 9.72% 9.72% 9.72% 9.72% 9.72%          
Investment, principal | £ [10],[13],[14],[15]     £ 1,353              
Investment, cost [10],[14],[15] $ 1,744                  
Investments at fair value [10],[14],[15] $ 1,835                  
Investment, Identifier [Axis]: Oranje Holdco, Inc., Systems Software, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 7.75% [10],[11],[15] 7.75% [10],[11],[15] 7.75% [10],[11],[15] 7.75% [10],[11],[15] 7.75% [10],[11],[15] 7.50% [5],[6],[21] 7.50% [5],[6],[21] 7.50% [5],[6],[21]    
Investment, principal $ 0 [10],[11],[13],[15]         $ 0 [5],[6],[9],[21]        
Investment, cost (28) [10],[11],[15]         (34) [5],[6],[21]        
Investments at fair value $ 0 [10],[11],[15]         $ 0 [5],[6],[21]        
Investment, Identifier [Axis]: Oranje Holdco, Inc., Systems Software, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 7.75% [10],[15] 7.75% [10],[15] 7.75% [10],[15] 7.75% [10],[15] 7.75% [10],[15] 7.50% [6],[21] 7.50% [6],[21] 7.50% [6],[21]    
Investment, interest rate (as a percent) 12.03% [10],[12],[15] 12.03% [10],[12],[15] 12.03% [10],[12],[15] 12.03% [10],[12],[15] 12.03% [10],[12],[15] 12.75% [6],[7],[21] 12.75% [6],[7],[21] 12.75% [6],[7],[21]    
Investment, principal $ 15,231 [10],[13],[15]         $ 15,231 [6],[9],[21]        
Investment, cost 15,003 [10],[15]         14,956 [6],[21]        
Investments at fair value $ 15,231 [10],[15]         $ 15,231 [6],[21]        
Investment, Identifier [Axis]: Oranje Holdco, Inc., Systems Software, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 7.25% [10],[15] 7.25% [10],[15] 7.25% [10],[15] 7.25% [10],[15] 7.25% [10],[15] 7.25% [6],[21] 7.25% [6],[21] 7.25% [6],[21]    
Investment, interest rate (as a percent) 11.55% [10],[12],[15] 11.55% [10],[12],[15] 11.55% [10],[12],[15] 11.55% [10],[12],[15] 11.55% [10],[12],[15] 12.50% [6],[7],[21] 12.50% [6],[7],[21] 12.50% [6],[7],[21]    
Investment, principal $ 4,047 [10],[13],[15]         $ 4,047 [6],[9],[21]        
Investment, cost 3,986 [10],[15]         3,974 [6],[21]        
Investments at fair value 4,047 [10],[15]         3,986 [6],[21]        
Investment, Identifier [Axis]: Other cash accounts                    
Schedule of Investments [Line Items]                    
Investment, cost 60,120         43,946        
Investments at fair value $ 60,120         $ 43,946        
Investment, Identifier [Axis]: PAI Financing Merger Sub LLC, Pharmaceuticals, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[11],[15] 4.75% 4.75% 4.75% 4.75% 4.75%          
Investment, principal [10],[11],[13],[15] $ 0                  
Investment, cost [10],[11],[15] (74)                  
Investments at fair value [10],[11],[15] $ (78)                  
Investment, Identifier [Axis]: PAI Financing Merger Sub LLC, Pharmaceuticals, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[15] 4.75% 4.75% 4.75% 4.75% 4.75%          
Investment, interest rate (as a percent) [10],[12],[15] 9.05% 9.05% 9.05% 9.05% 9.05%          
Investment, principal [10],[13],[15] $ 24,559                  
Investment, cost [10],[15] 24,211                  
Investments at fair value [10],[15] $ 24,191                  
Investment, Identifier [Axis]: PPW Aero Buyer, Inc., Aerospace & Defense, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [5],[6],[21] 5.50% [5],[6],[21] 5.50% [5],[6],[21]    
Investment, interest rate (as a percent) 13.00% [10],[11],[12],[15] 13.00% [10],[11],[12],[15] 13.00% [10],[11],[12],[15] 13.00% [10],[11],[12],[15] 13.00% [10],[11],[12],[15] 11.35% [5],[6],[7],[21] 11.35% [5],[6],[7],[21] 11.35% [5],[6],[7],[21]    
Investment, principal $ 274 [10],[11],[13],[15]         $ 753 [5],[6],[9],[21]        
Investment, cost 238 [10],[11],[15]         710 [5],[6],[21]        
Investments at fair value $ 274 [10],[11],[15]         $ 753 [5],[6],[21]        
Investment, Identifier [Axis]: PPW Aero Buyer, Inc., Aerospace & Defense, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 6.50% [10],[15] 6.50% [10],[15] 6.50% [10],[15] 6.50% [10],[15] 6.50% [10],[15] 6.50% [6],[21] 6.50% [6],[21] 6.50% [6],[21]    
Investment, interest rate (as a percent) 10.83% [10],[12],[15] 10.83% [10],[12],[15] 10.83% [10],[12],[15] 10.83% [10],[12],[15] 10.83% [10],[12],[15] 11.35% [6],[7],[21] 11.35% [6],[7],[21] 11.35% [6],[7],[21]    
Investment, principal $ 10,704 [10],[13],[15]         $ 10,786 [6],[9],[21]        
Investment, cost 10,445 [10],[15]         10,471 [6],[21]        
Investments at fair value $ 10,704 [10],[15]         $ 10,786 [6],[21]        
Investment, Identifier [Axis]: PPW Aero Buyer, Inc., Aerospace & Defense, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.50% [10],[15] 5.50% [10],[15] 5.50% [10],[15] 5.50% [10],[15] 5.50% [10],[15] 5.50% [6],[21] 5.50% [6],[21] 5.50% [6],[21]    
Investment, interest rate (as a percent) 9.80% [10],[12],[15] 9.80% [10],[12],[15] 9.80% [10],[12],[15] 9.80% [10],[12],[15] 9.80% [10],[12],[15] 10.10% [6],[7],[21] 10.10% [6],[7],[21] 10.10% [6],[7],[21]    
Investment, principal $ 9,285 [10],[13],[15]         $ 5,088 [6],[9],[21]        
Investment, cost 9,258 [10],[15]         5,057 [6],[21]        
Investments at fair value $ 9,261 [10],[15]         $ 5,019 [6],[21]        
Investment, Identifier [Axis]: PPW Aero Buyer, Inc., Aerospace & Defense, First Lien Term Loan 3                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [5],[6],[21] 5.50% [5],[6],[21] 5.50% [5],[6],[21]    
Investment, principal $ 0 [10],[11],[13],[15]         $ 0 [5],[6],[9],[21]        
Investment, cost (34) [10],[11],[15]         (71) [5],[6],[21]        
Investments at fair value $ (13) [10],[11],[15]         $ (128) [5],[6],[21]        
Investment, Identifier [Axis]: PPW Aero Buyer, Inc., Aerospace & Defense, First Lien Term Loan 4                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[15] 5.00% 5.00% 5.00% 5.00% 5.00%          
Investment, interest rate (as a percent) [10],[12],[15] 9.30% 9.30% 9.30% 9.30% 9.30%          
Investment, principal [10],[13],[15] $ 3,944                  
Investment, cost [10],[15] 3,907                  
Investments at fair value [10],[15] $ 3,909                  
Investment, Identifier [Axis]: PRGX Global, Inc., Data Processing & Outsourced Services, Common Stock                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 100,000 [10] 100,000 [10] 100,000 [10] 100,000 [10] 100,000 [10] 100,000 [6] 100,000 [6] 100,000 [6]    
Investment, cost $ 0 [10]         $ 109 [6]        
Investments at fair value $ 245 [10]         $ 415 [6]        
Investment, Identifier [Axis]: PRGX Global, Inc., Data Processing & Outsourced Services, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [5],[6],[21]           6.50% 6.50% 6.50%    
Investment, principal [5],[6],[9],[21]           $ 0        
Investment, cost [5],[6],[21]           (20)        
Investments at fair value [5],[6],[21]           $ 0        
Investment, Identifier [Axis]: PRGX Global, Inc., Data Processing & Outsourced Services, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [6],[21]           6.50% 6.50% 6.50%    
Investment, interest rate (as a percent) [6],[7],[21]           11.90% 11.90% 11.90%    
Investment, principal [6],[9],[21]           $ 26,176        
Investment, cost [6],[21]           25,994        
Investments at fair value [6],[21]           $ 26,176        
Investment, Identifier [Axis]: Park Blue CLO Ltd, Multi-Sector Holdings, CLO Notes                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [14],[15] 7.09% 7.09% 7.09% 7.09% 7.09%          
Investment, interest rate (as a percent) [12],[14],[15] 11.36% 11.36% 11.36% 11.36% 11.36%          
Investment, principal [13],[14],[15] $ 2,750                  
Investment, cost [14],[15] 2,835                  
Investments at fair value [14],[15] $ 2,729                  
Investment, Identifier [Axis]: Paulus Holdings Public Limited Company, Health Care Technology, Preferred Equity                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares [10],[14] 57,324 57,324 57,324 57,324 57,324          
Investment, cost [10],[14] $ 1,165                  
Investments at fair value [10],[14] $ 1,768                  
Investment, Identifier [Axis]: Paulus Holdings Public Limited Company, Health Care Technology, Warrants                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares [10],[14] 12,592 12,592 12,592 12,592 12,592          
Investment, cost [10],[14] $ 256                  
Investments at fair value [10],[14] $ 388                  
Investment, Identifier [Axis]: Performance Health Holdings, Inc., Health Care Distributors, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [6],[21]           5.75% 5.75% 5.75%    
Investment, interest rate (as a percent) [6],[7],[21]           11.11% 11.11% 11.11%    
Investment, principal [6],[9],[21]           $ 22,375        
Investment, cost [6],[21]           22,238        
Investments at fair value [6],[21]           $ 22,375        
Investment, Identifier [Axis]: PetVet Care Centers, LLC, Health Care Services, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 6.00% [10],[11],[15] 6.00% [10],[11],[15] 6.00% [10],[11],[15] 6.00% [10],[11],[15] 6.00% [10],[11],[15] 6.00% [5],[6],[21] 6.00% [5],[6],[21] 6.00% [5],[6],[21]    
Investment, principal $ 0 [10],[11],[13],[15]         $ 0 [5],[6],[9],[21]        
Investment, cost (100) [10],[11],[15]         (117) [5],[6],[21]        
Investments at fair value $ (398) [10],[11],[15]         $ (175) [5],[6],[21]        
Investment, Identifier [Axis]: PetVet Care Centers, LLC, Health Care Services, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 6.00% [10],[15] 6.00% [10],[15] 6.00% [10],[15] 6.00% [10],[15] 6.00% [10],[15] 6.00% [6],[21] 6.00% [6],[21] 6.00% [6],[21]    
Investment, interest rate (as a percent) 10.33% [10],[12],[15] 10.33% [10],[12],[15] 10.33% [10],[12],[15] 10.33% [10],[12],[15] 10.33% [10],[12],[15] 10.85% [6],[7],[21] 10.85% [6],[7],[21] 10.85% [6],[7],[21]    
Investment, principal $ 51,849 [10],[13],[15]         $ 52,244 [6],[9],[21]        
Investment, cost 51,053 [10],[15]         51,330 [6],[21]        
Investments at fair value $ 48,842 [10],[15]         $ 50,912 [6],[21]        
Investment, Identifier [Axis]: PetVet Care Centers, LLC, Health Care Services, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 6.00% [10],[11],[15] 6.00% [10],[11],[15] 6.00% [10],[11],[15] 6.00% [10],[11],[15] 6.00% [10],[11],[15] 6.00% [5],[6],[21] 6.00% [5],[6],[21] 6.00% [5],[6],[21]    
Investment, principal $ 0 [10],[11],[13],[15]         $ 0 [5],[6],[9],[21]        
Investment, cost (69) [10],[11],[15]         (69) [5],[6],[21]        
Investments at fair value $ (330) [10],[11],[15]         $ (106) [5],[6],[21]        
Investment, Identifier [Axis]: PetVet Care Centers, LLC, Health Care Services, Preferred Equity                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 4,531 [10] 4,531 [10] 4,531 [10] 4,531 [10] 4,531 [10] 4,531 [6] 4,531 [6] 4,531 [6]    
Investment, cost $ 4,440 [10]         $ 4,440 [6]        
Investments at fair value $ 5,401 [10]         $ 5,022 [6]        
Investment, Identifier [Axis]: Phoenix Finance, Inc., Application Software, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[15] 9.00% 9.00% 9.00% 9.00% 9.00%          
Investment, interest rate (as a percent) [10],[12],[15]          
Investment, interest rate, paid in kind (as a percent) [10],[15] 13.30% 13.30% 13.30% 13.30% 13.30%          
Investment, principal [10],[13],[15] $ 5,149                  
Investment, cost [10],[15] 5,011                  
Investments at fair value [10],[15] $ 4,994                  
Investment, Identifier [Axis]: Phoenix Finance, Inc., Application Software, Second Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[15] 7.50% 7.50% 7.50% 7.50% 7.50%          
Investment, interest rate (as a percent) [10],[12],[15]          
Investment, interest rate, paid in kind (as a percent) [10],[15] 11.95% 11.95% 11.95% 11.95% 11.95%          
Investment, principal [10],[13],[15] $ 9,257                  
Investment, cost [10],[15] 9,243                  
Investments at fair value [10],[15] $ 8,378                  
Investment, Identifier [Axis]: Pluralsight, LLC, Application Software, Common Stock                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 4,300,526 [10] 4,300,526 [10] 4,300,526 [10] 4,300,526 [10] 4,300,526 [10] 4,300,526 [6] 4,300,526 [6] 4,300,526 [6]    
Investment, principal [6],[9]                  
Investment, cost $ 14,364 [10]         14,364 [6]        
Investments at fair value $ 9,977 [10]         $ 14,364 [6]        
Investment, Identifier [Axis]: Pluralsight, LLC, Application Software, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 4.50% [10],[11],[15] 4.50% [10],[11],[15] 4.50% [10],[11],[15] 4.50% [10],[11],[15] 4.50% [10],[11],[15] 4.50% [5],[6],[21] 4.50% [5],[6],[21] 4.50% [5],[6],[21]    
Investment, principal $ 0 [10],[11],[13],[15]         $ 0 [5],[6],[9],[21]        
Investment, cost 0 [10],[11],[15]         0 [5],[6],[21]        
Investments at fair value $ 0 [10],[11],[15]         $ 0 [5],[6],[21]        
Investment, Identifier [Axis]: Pluralsight, LLC, Application Software, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 4.50% [10],[15] 4.50% [10],[15] 4.50% [10],[15] 4.50% [10],[15] 4.50% [10],[15] 4.50% [6],[21] 4.50% [6],[21] 4.50% [6],[21]    
Investment, interest rate (as a percent) 7.33% [10],[12],[15] 7.33% [10],[12],[15] 7.33% [10],[12],[15] 7.33% [10],[12],[15] 7.33% [10],[12],[15] 8.12% [6],[7],[21] 8.12% [6],[7],[21] 8.12% [6],[7],[21]    
Investment, interest rate, paid in kind (as a percent) 1.50% [10],[15] 1.50% [10],[15] 1.50% [10],[15] 1.50% [10],[15] 1.50% [10],[15] 1.50% [6],[21] 1.50% [6],[21] 1.50% [6],[21]    
Investment, principal $ 5,023 [10],[13],[15]         $ 4,965 [6],[9],[21]        
Investment, cost 5,023 [10],[15]         4,965 [6],[21]        
Investments at fair value $ 5,023 [10],[15]         $ 4,965 [6],[21]        
Investment, Identifier [Axis]: Pluralsight, LLC, Application Software, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 4.50% [10],[15] 4.50% [10],[15] 4.50% [10],[15] 4.50% [10],[15] 4.50% [10],[15] 4.50% [5],[6],[21] 4.50% [5],[6],[21] 4.50% [5],[6],[21]    
Investment, interest rate (as a percent) [10],[12],[15] 7.33% 7.33% 7.33% 7.33% 7.33%          
Investment, interest rate, paid in kind (as a percent) [10],[15] 1.50% 1.50% 1.50% 1.50% 1.50%          
Investment, principal $ 8,701 [10],[13],[15]         $ 0 [5],[6],[9],[21]        
Investment, cost 8,701 [10],[15]         0 [5],[6],[21]        
Investments at fair value $ 8,701 [10],[15]         $ 0 [5],[6],[21]        
Investment, Identifier [Axis]: Pluralsight, LLC, Application Software, First Lien Term Loan 3                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 7.50% [10],[15] 7.50% [10],[15] 7.50% [10],[15] 7.50% [10],[15] 7.50% [10],[15] 4.50% [6],[21] 4.50% [6],[21] 4.50% [6],[21]    
Investment, interest rate (as a percent) [6],[7],[21]           8.12% 8.12% 8.12%    
Investment, interest rate, paid in kind (as a percent) 11.83% [10],[15] 11.83% [10],[15] 11.83% [10],[15] 11.83% [10],[15] 11.83% [10],[15] 1.50% [6],[21] 1.50% [6],[21] 1.50% [6],[21]    
Investment, principal $ 14,151 [10],[13],[15]         $ 8,601 [6],[9],[21]        
Investment, cost 14,151 [10],[15]         8,601 [6],[21]        
Investments at fair value $ 14,151 [10],[15]         $ 8,601 [6],[21]        
Investment, Identifier [Axis]: Pluralsight, LLC, Application Software, First Lien Term Loan 4                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 4.50% [10],[11],[15] 4.50% [10],[11],[15] 4.50% [10],[11],[15] 4.50% [10],[11],[15] 4.50% [10],[11],[15] 7.50% [6],[21] 7.50% [6],[21] 7.50% [6],[21]    
Investment, interest rate, paid in kind (as a percent) [6],[21]           12.62% 12.62% 12.62%    
Investment, principal $ 0 [10],[11],[13],[15]         $ 12,902 [6],[9],[21]        
Investment, cost 0 [10],[11],[15]         12,902 [6],[21]        
Investments at fair value $ 0 [10],[11],[15]         $ 12,902 [6],[21]        
Investment, Identifier [Axis]: Poseidon Midco AB, Pharmaceuticals, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.50% [10],[14],[15] 5.50% [10],[14],[15] 5.50% [10],[14],[15] 5.50% [10],[14],[15] 5.50% [10],[14],[15] 5.50% [6],[17],[21] 5.50% [6],[17],[21] 5.50% [6],[17],[21]    
Investment, interest rate (as a percent) 7.56% [10],[12],[14],[15] 7.56% [10],[12],[14],[15] 7.56% [10],[12],[14],[15] 7.56% [10],[12],[14],[15] 7.56% [10],[12],[14],[15] 8.97% [6],[7],[17],[21] 8.97% [6],[7],[17],[21] 8.97% [6],[7],[17],[21]    
Investment, principal | €   € 12,868 [10],[13],[14],[15]         € 12,868 [6],[9],[17],[21]      
Investment, cost $ 13,993 [10],[14],[15]         $ 13,949 [6],[17],[21]        
Investments at fair value $ 15,105 [10],[14],[15]         $ 13,994 [6],[17],[21]        
Investment, Identifier [Axis]: Poseidon Midco AB, Pharmaceuticals, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.50% [10],[11],[14],[15] 5.50% [10],[11],[14],[15] 5.50% [10],[11],[14],[15] 5.50% [10],[11],[14],[15] 5.50% [10],[11],[14],[15] 5.50% [5],[6],[17],[21] 5.50% [5],[6],[17],[21] 5.50% [5],[6],[17],[21]    
Investment, interest rate (as a percent) [10],[11],[12],[14],[15] 9.72% 9.72% 9.72% 9.72% 9.72%          
Investment, principal $ 5,846 [10],[11],[13],[14],[15]         $ 0 [5],[6],[9],[17],[21]        
Investment, cost 5,788 [10],[11],[14],[15]         0 [5],[6],[17],[21]        
Investments at fair value $ 5,846 [10],[11],[14],[15]         $ 0 [5],[6],[17],[21]        
Investment, Identifier [Axis]: Poseidon Midco AB, Pharmaceuticals, First Lien Term Loan 3                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[11],[14],[15] 5.00% 5.00% 5.00% 5.00% 5.00%          
Investment, principal | € [10],[11],[13],[14],[15]   € 0                
Investment, cost [10],[11],[14],[15] $ (49)                  
Investments at fair value [10],[11],[14],[15] $ (51)                  
Investment, Identifier [Axis]: Profrac Holdings II, LLC, Industrial Machinery & Supplies & Components, First Lien Floating Rate Bond                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 7.25% [10],[14],[15] 7.25% [10],[14],[15] 7.25% [10],[14],[15] 7.25% [10],[14],[15] 7.25% [10],[14],[15] 7.25% [6],[17],[21] 7.25% [6],[17],[21] 7.25% [6],[17],[21]    
Investment, interest rate (as a percent) 11.54% [10],[12],[14],[15] 11.54% [10],[12],[14],[15] 11.54% [10],[12],[14],[15] 11.54% [10],[12],[14],[15] 11.54% [10],[12],[14],[15] 11.84% [6],[7],[17],[21] 11.84% [6],[7],[17],[21] 11.84% [6],[7],[17],[21]    
Investment, principal $ 24,513 [10],[13],[14],[15]         $ 26,642 [6],[9],[17],[21]        
Investment, cost 24,268 [10],[14],[15]         26,376 [6],[17],[21]        
Investments at fair value $ 24,268 [10],[14],[15]         $ 26,410 [6],[17],[21]        
Investment, Identifier [Axis]: Protein For Pets Opco, LLC, Packaged Foods & Meats, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.25% [10],[11],[15] 5.25% [10],[11],[15] 5.25% [10],[11],[15] 5.25% [10],[11],[15] 5.25% [10],[11],[15] 5.25% [5],[6],[21] 5.25% [5],[6],[21] 5.25% [5],[6],[21]    
Investment, interest rate (as a percent) [10],[11],[12],[15] 9.58% 9.58% 9.58% 9.58% 9.58%          
Investment, principal $ 572 [10],[11],[13],[15]         $ 0 [5],[6],[9],[21]        
Investment, cost 538 [10],[11],[15]         (39) [5],[6],[21]        
Investments at fair value $ 526 [10],[11],[15]         $ (41) [5],[6],[21]        
Investment, Identifier [Axis]: Protein For Pets Opco, LLC, Packaged Foods & Meats, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.25% [10],[15] 5.25% [10],[15] 5.25% [10],[15] 5.25% [10],[15] 5.25% [10],[15] 5.25% [6],[21] 5.25% [6],[21] 5.25% [6],[21]    
Investment, interest rate (as a percent) 9.58% [10],[12],[15] 9.58% [10],[12],[15] 9.58% [10],[12],[15] 9.58% [10],[12],[15] 9.58% [10],[12],[15] 10.10% [6],[7],[21] 10.10% [6],[7],[21] 10.10% [6],[7],[21]    
Investment, principal $ 20,122 [10],[13],[15]         $ 20,274 [6],[9],[21]        
Investment, cost 19,798 [10],[15]         19,902 [6],[21]        
Investments at fair value $ 19,693 [10],[15]         $ 19,887 [6],[21]        
Investment, Identifier [Axis]: Quantum Bidco Limited, Food Distributors, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [6],[17],[21]           5.50% 5.50% 5.50%    
Investment, interest rate (as a percent) [6],[7],[17],[21]           10.73% 10.73% 10.73%    
Investment, principal | £ [6],[9],[17],[21]               £ 9,739    
Investment, cost [6],[17],[21]           $ 12,092        
Investments at fair value [6],[17],[21]           $ 12,769        
Investment, Identifier [Axis]: Quantum Bidco Limited, Food Distributors, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [5],[6],[17],[21]           5.50% 5.50% 5.50%    
Investment, interest rate (as a percent) [5],[6],[7],[17],[21]           10.70% 10.70% 10.70%    
Investment, principal [5],[6],[9],[17],[21]           $ 2,123        
Investment, cost [5],[6],[17],[21]           2,547        
Investments at fair value [5],[6],[17],[21]           $ 2,715        
Investment, Identifier [Axis]: QuorumLabs, Inc., Application Software, Preferred Equity                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares [6]           64,887,669 64,887,669 64,887,669    
Investment, cost [6]           $ 375        
Investments at fair value [6]           $ 0        
Investment, Identifier [Axis]: Renaissance Holding Corp., Education Services, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [15] 4.00% 4.00% 4.00% 4.00% 4.00%          
Investment, interest rate (as a percent) [12],[15] 8.28% 8.28% 8.28% 8.28% 8.28%          
Investment, principal [13],[15] $ 9,923                  
Investment, cost [15] 9,739                  
Investments at fair value [15] $ 9,039                  
Investment, Identifier [Axis]: RumbleOn, Inc., Automotive Retail, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 8.25% [10],[14],[15] 8.25% [10],[14],[15] 8.25% [10],[14],[15] 8.25% [10],[14],[15] 8.25% [10],[14],[15] 8.25% [6],[17],[21] 8.25% [6],[17],[21] 8.25% [6],[17],[21]    
Investment, interest rate (as a percent) 11.79% [10],[12],[14],[15] 11.79% [10],[12],[14],[15] 11.79% [10],[12],[14],[15] 11.79% [10],[12],[14],[15] 11.79% [10],[12],[14],[15] 12.77% [6],[7],[17],[21] 12.77% [6],[7],[17],[21] 12.77% [6],[7],[17],[21]    
Investment, interest rate, paid in kind (as a percent) 1.00% [10],[14],[15] 1.00% [10],[14],[15] 1.00% [10],[14],[15] 1.00% [10],[14],[15] 1.00% [10],[14],[15] 1.00% [6],[17],[21] 1.00% [6],[17],[21] 1.00% [6],[17],[21]    
Investment, principal $ 8,898 [10],[13],[14],[15]         $ 8,819 [6],[9],[17],[21]        
Investment, cost 8,782 [10],[14],[15]         8,629 [6],[17],[21]        
Investments at fair value $ 8,364 [10],[14],[15]         $ 8,334 [6],[17],[21]        
Investment, Identifier [Axis]: RumbleOn, Inc., Automotive Retail, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 8.25% [10],[14],[15] 8.25% [10],[14],[15] 8.25% [10],[14],[15] 8.25% [10],[14],[15] 8.25% [10],[14],[15] 8.25% [6],[17],[21] 8.25% [6],[17],[21] 8.25% [6],[17],[21]    
Investment, interest rate (as a percent) 11.79% [10],[12],[14],[15] 11.79% [10],[12],[14],[15] 11.79% [10],[12],[14],[15] 11.79% [10],[12],[14],[15] 11.79% [10],[12],[14],[15] 12.77% [6],[7],[17],[21] 12.77% [6],[7],[17],[21] 12.77% [6],[7],[17],[21]    
Investment, interest rate, paid in kind (as a percent) 1.00% [10],[14],[15] 1.00% [10],[14],[15] 1.00% [10],[14],[15] 1.00% [10],[14],[15] 1.00% [10],[14],[15] 1.00% [6],[17],[21] 1.00% [6],[17],[21] 1.00% [6],[17],[21]    
Investment, principal $ 29,484 [10],[13],[14],[15]         $ 29,223 [6],[9],[17],[21]        
Investment, cost 29,088 [10],[14],[15]         28,603 [6],[17],[21]        
Investments at fair value $ 27,715 [10],[14],[15]         $ 27,615 [6],[17],[21]        
Investment, Identifier [Axis]: RumbleOn, Inc., Automotive Retail, Warrants                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 204,454 [10],[14] 204,454 [10],[14] 204,454 [10],[14] 204,454 [10],[14] 204,454 [10],[14] 204,454 [6],[17] 204,454 [6],[17] 204,454 [6],[17]    
Investment, cost $ 1,202 [10],[14]         $ 1,202 [6],[17]        
Investments at fair value $ 123 [10],[14]         $ 470 [6],[17]        
Investment, Identifier [Axis]: SIO2 Medical Products, Inc., Metal, Glass & Plastic Containers, Common Stock                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 1,184,630 [10] 1,184,630 [10] 1,184,630 [10] 1,184,630 [10] 1,184,630 [10] 1,184,630 [6] 1,184,630 [6] 1,184,630 [6] 1,184,630  
Investment, cost $ 40,093 [10]         $ 40,093 [6]        
Investments at fair value $ 0 [10]         $ 20,802 [6]     $ 23,548 36,226
Investment owned, percent of net assets (as a percent) 0.00% 0.00% 0.00% 0.00% 0.00%       1.60%  
Investment, Identifier [Axis]: SIO2 Medical Products, Inc., Metal, Glass & Plastic Containers, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, interest rate, paid in kind (as a percent) 12.00% [10],[19] 12.00% [10],[19] 12.00% [10],[19] 12.00% [10],[19] 12.00% [10],[19] 12.00% [6] 12.00% [6] 12.00% [6] 12.00%  
Investment, principal $ 3,645 [10],[13],[19]         $ 3,332 [6],[9]     $ 2,682  
Investment, cost 3,346 [10],[19]         3,243 [6]        
Investments at fair value $ 1,097 [10],[19]         $ 3,332 [6]     $ 2,682 0
Investment owned, percent of net assets (as a percent) 0.10% 0.10% 0.10% 0.10% 0.10%       0.20%  
Investment, Identifier [Axis]: SIO2 Medical Products, Inc., Metal, Glass & Plastic Containers, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, interest rate, paid in kind (as a percent) 12.00% [10],[19] 12.00% [10],[19] 12.00% [10],[19] 12.00% [10],[19] 12.00% [10],[19] 12.00% [6] 12.00% [6] 12.00% [6] 12.00%  
Investment, principal $ 19,586 [10],[13],[19]         $ 17,907 [6],[9]     $ 17,363  
Investment, cost 17,103 [10],[19]         16,339 [6]        
Investments at fair value $ 5,893 [10],[19]         $ 17,907 [6]     $ 17,363 15,874
Investment owned, percent of net assets (as a percent) 0.40% 0.40% 0.40% 0.40% 0.40%       1.20%  
Investment, Identifier [Axis]: SIO2 Medical Products, Inc., Metal, Glass & Plastic Containers, First Lien Term Loan 3                    
Schedule of Investments [Line Items]                    
Investment, interest rate, paid in kind (as a percent) 12.00% [10],[19] 12.00% [10],[19] 12.00% [10],[19] 12.00% [10],[19] 12.00% [10],[19] 12.00% [6] 12.00% [6] 12.00% [6] 12.00%  
Investment, principal $ 3,883 [10],[13],[19]         $ 3,550 [6],[9]     $ 3,442  
Investment, cost 3,643 [10],[19]         3,500 [6]        
Investments at fair value $ 1,168 [10],[19]         $ 3,550 [6]     $ 3,442 1,359
Investment owned, percent of net assets (as a percent) 0.10% 0.10% 0.10% 0.10% 0.10%       0.20%  
Investment, Identifier [Axis]: SIO2 Medical Products, Inc., Metal, Glass & Plastic Containers, First Lien Term Loan 4                    
Schedule of Investments [Line Items]                    
Investment, interest rate, paid in kind (as a percent) 12.00% [10],[19] 12.00% [10],[19] 12.00% [10],[19] 12.00% [10],[19] 12.00% [10],[19] 12.00% [6] 12.00% [6] 12.00% [6]    
Investment, principal $ 1,750 [10],[13],[19]         $ 1,600 [6],[9]        
Investment, cost 1,648 [10],[19]         1,594 [6]        
Investments at fair value $ 527 [10],[19]         $ 1,600 [6]        
Investment owned, percent of net assets (as a percent) 0.00% 0.00% 0.00% 0.00% 0.00%          
Investment, Identifier [Axis]: SIO2 Medical Products, Inc., Metal, Glass & Plastic Containers, First Lien Term Loan 5                    
Schedule of Investments [Line Items]                    
Investment, interest rate, paid in kind (as a percent) 12.00% [10],[19] 12.00% [10],[19] 12.00% [10],[19] 12.00% [10],[19] 12.00% [10],[19] 12.00% [5],[6] 12.00% [5],[6] 12.00% [5],[6]    
Investment, principal $ 1,702 [10],[13],[19]         $ 0 [5],[6],[9]        
Investment, cost 1,576 [10],[19]         0 [5],[6]        
Investments at fair value $ 512 [10],[19]         0 [5],[6]        
Investment owned, percent of net assets (as a percent) 0.00% 0.00% 0.00% 0.00% 0.00%          
Investment, Identifier [Axis]: SIO2 Medical Products, Inc., Metal, Glass & Plastic Containers, First Lien Term Loan 6                    
Schedule of Investments [Line Items]                    
Investment, interest rate, paid in kind (as a percent) [10],[19] 12.00% 12.00% 12.00% 12.00% 12.00%          
Investment, principal [10],[13],[19] $ 816                  
Investment, cost [10],[19] 762                  
Investments at fair value $ 816 [10],[19]         0        
Investment owned, percent of net assets (as a percent) 0.10% 0.10% 0.10% 0.10% 0.10%          
Investment, Identifier [Axis]: SIO2 Medical Products, Inc., Metal, Glass & Plastic Containers, First Lien Term Loan 7                    
Schedule of Investments [Line Items]                    
Investment, interest rate, paid in kind (as a percent) [10],[19] 12.00% 12.00% 12.00% 12.00% 12.00%          
Investment, principal [10],[13],[19] $ 800                  
Investment, cost [10],[19] 783                  
Investments at fair value $ 800 [10],[19]         $ 0        
Investment owned, percent of net assets (as a percent) 0.10% 0.10% 0.10% 0.10% 0.10%          
Investment, Identifier [Axis]: SIO2 Medical Products, Inc., Metal, Glass & Plastic Containers, Warrants                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 66,686 [10] 66,686 [10] 66,686 [10] 66,686 [10] 66,686 [10] 66,686 [6] 66,686 [6] 66,686 [6] 66,686  
Investment, cost $ 0 [10]         $ 0 [6]        
Investments at fair value $ 0 [10]         $ 0 [6]     $ 0 0
Investment owned, percent of net assets (as a percent) 0.00% 0.00% 0.00% 0.00% 0.00%       0.00%  
Investment, Identifier [Axis]: SLF JV 1 Notes                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 7.00% 7.00% 7.00% 7.00% 7.00%          
Investment, Identifier [Axis]: SM Wellness Holdings, Inc., Health Care Services, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [6],[21]           4.50% 4.50% 4.50%    
Investment, interest rate (as a percent) [6],[7],[21]           10.01% 10.01% 10.01%    
Investment, principal [6],[9],[21]           $ 4,406        
Investment, cost [6],[21]           3,908        
Investments at fair value [6],[21]           $ 4,318        
Investment, Identifier [Axis]: SM Wellness Holdings, Inc., Health Care Services, Second Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [6],[21]           8.00% 8.00% 8.00%    
Investment, interest rate (as a percent) [6],[7],[21]           13.51% 13.51% 13.51%    
Investment, principal [6],[9],[21]           $ 12,034        
Investment, cost [6],[21]           11,367        
Investments at fair value [6],[21]           $ 11,432        
Investment, Identifier [Axis]: SVP-Singer Holdings Inc., Home Furnishings, Common Stock                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares [10] 418,881 418,881 418,881 418,881 418,881          
Investment, cost [10] $ 2,463                  
Investments at fair value [10] $ 2,463                  
Investment, Identifier [Axis]: SVP-Singer Holdings Inc., Home Furnishings, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [6],[20],[21]           8.25% 8.25% 8.25%    
Investment, principal [6],[9],[20],[21]           $ 28,146        
Investment, cost [6],[20],[21]           23,170        
Investments at fair value [6],[20],[21]           $ 8,444        
Investment, Identifier [Axis]: SVP-Singer Holdings Inc., Home Furnishings, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [5],[6],[20],[21]           9.75% 9.75% 9.75%    
Investment, principal [5],[6],[9],[20],[21]           $ 932        
Investment, cost [5],[6],[20],[21]           932        
Investments at fair value [5],[6],[20],[21]           $ 932        
Investment, Identifier [Axis]: Salus Workers' Compensation, LLC, Diversified Financial Services, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 10.50% [10],[11],[15] 10.50% [10],[11],[15] 10.50% [10],[11],[15] 10.50% [10],[11],[15] 10.50% [10],[11],[15] 10.00% [5],[6],[21] 10.00% [5],[6],[21] 10.00% [5],[6],[21]    
Investment, interest rate (as a percent) [10],[11],[12],[15] 14.82% 14.82% 14.82% 14.82% 14.82%          
Investment, principal $ 2,233 [10],[11],[13],[15]         $ 0 [5],[6],[9],[21]        
Investment, cost 2,194 [10],[11],[15]         (63) [5],[6],[21]        
Investments at fair value $ 2,047 [10],[11],[15]         $ (140) [5],[6],[21]        
Investment, Identifier [Axis]: Salus Workers' Compensation, LLC, Diversified Financial Services, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 10.50% [10],[15] 10.50% [10],[15] 10.50% [10],[15] 10.50% [10],[15] 10.50% [10],[15] 10.00% [6],[21] 10.00% [6],[21] 10.00% [6],[21]    
Investment, interest rate (as a percent) [6],[7],[21]           14.85% 14.85% 14.85%    
Investment, interest rate, paid in kind (as a percent) [10],[15] 14.83% 14.83% 14.83% 14.83% 14.83%          
Investment, principal $ 22,861 [10],[13],[15]         $ 22,107 [6],[9],[21]        
Investment, cost 22,579 [10],[15]         21,656 [6],[21]        
Investments at fair value $ 21,489 [10],[15]         $ 21,112 [6],[21]        
Investment, Identifier [Axis]: Salus Workers' Compensation, LLC, Diversified Financial Services, Warrants                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 991,019 [10] 991,019 [10] 991,019 [10] 991,019 [10] 991,019 [10] 991,019 [6] 991,019 [6] 991,019 [6]    
Investment, cost $ 327 [10]         $ 327 [6]        
Investments at fair value $ 0 [10]         $ 89 [6]        
Investment, Identifier [Axis]: Saratoga, Diversified Financial Services, Credit Linked Note                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.33% [10],[14],[15],[31] 5.33% [10],[14],[15],[31] 5.33% [10],[14],[15],[31] 5.33% [10],[14],[15],[31] 5.33% [10],[14],[15],[31] 5.33% [6],[17],[21],[32] 5.33% [6],[17],[21],[32] 5.33% [6],[17],[21],[32]    
Investment, interest rate (as a percent) 9.86% [10],[12],[14],[15],[31] 9.86% [10],[12],[14],[15],[31] 9.86% [10],[12],[14],[15],[31] 9.86% [10],[12],[14],[15],[31] 9.86% [10],[12],[14],[15],[31] 10.18% [6],[7],[17],[21],[32] 10.18% [6],[7],[17],[21],[32] 10.18% [6],[7],[17],[21],[32]    
Investment, principal $ 24,500 [10],[13],[14],[15],[31]         $ 24,500 [6],[9],[17],[21],[32]        
Investment, cost 24,418 [10],[14],[15],[31]         24,478 [6],[17],[21],[32]        
Investments at fair value $ 24,500 [10],[14],[15],[31]         $ 24,478 [6],[17],[21],[32]        
Investment, Identifier [Axis]: Scilex Holding Co, Biotechnology, Common Stock                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares [17]           9,307 9,307 9,307    
Investment, cost [17]           $ 78        
Investments at fair value [17]           $ 9        
Investment, Identifier [Axis]: Scilex Holding Co, Pharmaceuticals, Common Stock                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares [14] 274 274 274 274 274          
Investment, cost [14] $ 78                  
Investments at fair value [14] $ 2                  
Investment, Identifier [Axis]: Secure Acquisition Inc., Paper & Plastic Packaging Products & Materials, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [21]           4.25% 4.25% 4.25%    
Investment, interest rate (as a percent) [7],[21]           8.85% 8.85% 8.85%    
Investment, principal [9],[21]           $ 14,963        
Investment, cost [21]           14,925        
Investments at fair value [21]           $ 15,009        
Investment, Identifier [Axis]: Senior Loan Fund JV I, LLC, Multi-Sector Holdings, Membership Interest                    
Schedule of Investments [Line Items]                    
Investment owned, ownership (as a percent) 87.50% [11],[14],[24],[27],[28] 87.50% [11],[14],[24],[27],[28] 87.50% [11],[14],[24],[27],[28] 87.50% [11],[14],[24],[27],[28] 87.50% [11],[14],[24],[27],[28] 87.50% [5],[17],[26],[29],[30] 87.50% [5],[17],[26],[29],[30] 87.50% [5],[17],[26],[29],[30] 87.50%  
Investment, cost $ 54,791 [11],[14],[24],[27],[28]         $ 54,791 [5],[17],[26],[29],[30]        
Investments at fair value $ 14,881 [11],[14],[24],[27],[28]         $ 22,541 [5],[17],[26],[29],[30]     $ 25,817 28,878
Investment owned, percent of net assets (as a percent) 1.00% 1.00% 1.00% 1.00% 1.00%       1.70%  
Investment, Identifier [Axis]: Senior Loan Fund JV I, LLC, Multi-Sector Holdings, Subordinated Debt                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 7.00% [10],[11],[14],[15],[27] 7.00% [10],[11],[14],[15],[27] 7.00% [10],[11],[14],[15],[27] 7.00% [10],[11],[14],[15],[27] 7.00% [10],[11],[14],[15],[27] 7.00% [5],[6],[17],[21],[29] 7.00% [5],[6],[17],[21],[29] 7.00% [5],[6],[17],[21],[29] 7.00%  
Investment, interest rate (as a percent) 11.43% [10],[11],[12],[14],[15],[27] 11.43% [10],[11],[12],[14],[15],[27] 11.43% [10],[11],[12],[14],[15],[27] 11.43% [10],[11],[12],[14],[15],[27] 11.43% [10],[11],[12],[14],[15],[27] 12.45% [5],[6],[7],[17],[21],[29] 12.45% [5],[6],[7],[17],[21],[29] 12.45% [5],[6],[7],[17],[21],[29] 12.44%  
Investment, principal $ 112,656 [10],[11],[13],[14],[15],[27]         $ 112,656 [5],[6],[9],[17],[21],[29]     $ 112,656  
Investment, cost 112,656 [10],[11],[14],[15],[27]         112,656 [5],[6],[17],[21],[29]        
Investments at fair value $ 112,656 [10],[11],[14],[15],[27]         $ 112,656 [5],[6],[17],[21],[29]     $ 112,656 112,656
Investment owned, percent of net assets (as a percent) 7.60% 7.60% 7.60% 7.60% 7.60%       7.50%  
Investment, Identifier [Axis]: Seres Therapeutics, Inc., Biotechnology, Warrants                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 2,911 [10],[14] 2,911 [10],[14] 2,911 [10],[14] 2,911 [10],[14] 2,911 [10],[14] 58,210 [6],[17] 58,210 [6],[17] 58,210 [6],[17]    
Investment, cost $ 182 [10],[14]         $ 182 [6],[17]        
Investments at fair value $ 13 [10],[14]         $ 29 [6],[17]        
Investment, Identifier [Axis]: Sierra Enterprises, LLC, Soft Drinks & Non-alcoholic Beverages, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[11],[15] 6.00% 6.00% 6.00% 6.00% 6.00%          
Investment, principal [10],[11],[13],[15] $ 0                  
Investment, cost [10],[11],[15] (21)                  
Investments at fair value [10],[11],[15] $ (19)                  
Investment, Identifier [Axis]: Sierra Enterprises, LLC, Soft Drinks & Non-alcoholic Beverages, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[15] 6.00% 6.00% 6.00% 6.00% 6.00%          
Investment, interest rate (as a percent) [10],[12],[15] 10.32% 10.32% 10.32% 10.32% 10.32%          
Investment, principal [10],[13],[15] $ 11,248                  
Investment, cost [10],[15] 11,083                  
Investments at fair value [10],[15] $ 11,096                  
Investment, Identifier [Axis]: Sorenson Communications, LLC, Communications Equipment, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.75% [10],[11],[15] 5.75% [10],[11],[15] 5.75% [10],[11],[15] 5.75% [10],[11],[15] 5.75% [10],[11],[15] 5.75% [5],[6],[21] 5.75% [5],[6],[21] 5.75% [5],[6],[21]    
Investment, principal $ 0 [10],[11],[13],[15]         $ 0 [5],[6],[9],[21]        
Investment, cost (82) [10],[11],[15]         (98) [5],[6],[21]        
Investments at fair value $ (102) [10],[11],[15]         $ (89) [5],[6],[21]        
Investment, Identifier [Axis]: Sorenson Communications, LLC, Communications Equipment, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.75% [10],[15] 5.75% [10],[15] 5.75% [10],[15] 5.75% [10],[15] 5.75% [10],[15] 5.75% [6],[21] 5.75% [6],[21] 5.75% [6],[21]    
Investment, interest rate (as a percent) 10.08% [10],[12],[15] 10.08% [10],[12],[15] 10.08% [10],[12],[15] 10.08% [10],[12],[15] 10.08% [10],[12],[15] 10.60% [6],[7],[21] 10.60% [6],[7],[21] 10.60% [6],[7],[21]    
Investment, principal $ 44,994 [10],[13],[15]         $ 47,730 [6],[9],[21]        
Investment, cost 44,310 [10],[15]         46,862 [6],[21]        
Investments at fair value $ 44,148 [10],[15]         $ 46,947 [6],[21]        
Investment, Identifier [Axis]: Sorrento Therapeutics, Inc., Biotechnology, Common Stock                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 66,000 [14] 66,000 [14] 66,000 [14] 66,000 [14] 66,000 [14] 66,000 [17] 66,000 [17] 66,000 [17]    
Investment, cost $ 139 [14]         $ 139 [17]        
Investments at fair value $ 0 [14]         $ 0 [17]        
Investment, Identifier [Axis]: Spanx, LLC, Apparel Retail, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.00% [5],[6],[21] 5.00% [5],[6],[21] 5.00% [5],[6],[21]    
Investment, principal $ 0 [10],[11],[13],[15]         $ 0 [5],[6],[9],[21]        
Investment, cost (25) [10],[11],[15]         (32) [5],[6],[21]        
Investments at fair value $ (31) [10],[11],[15]         $ (15) [5],[6],[21]        
Investment, Identifier [Axis]: Spanx, LLC, Apparel Retail, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.50% [10],[15] 5.50% [10],[15] 5.50% [10],[15] 5.50% [10],[15] 5.50% [10],[15] 5.25% [6],[21] 5.25% [6],[21] 5.25% [6],[21]    
Investment, interest rate (as a percent) 9.93% [10],[12],[15] 9.93% [10],[12],[15] 9.93% [10],[12],[15] 9.93% [10],[12],[15] 9.93% [10],[12],[15] 10.20% [6],[7],[21] 10.20% [6],[7],[21] 10.20% [6],[7],[21]    
Investment, principal $ 17,918 [10],[13],[15]         $ 18,058 [6],[9],[21]        
Investment, cost 17,794 [10],[15]         17,887 [6],[21]        
Investments at fair value $ 17,739 [10],[15]         $ 18,032 [6],[21]        
Investment, Identifier [Axis]: Spruce Bidco I Inc., Health Care Equipment, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[11],[15] 5.00% 5.00% 5.00% 5.00% 5.00%          
Investment, principal [10],[11],[13],[15] $ 0                  
Investment, cost [10],[11],[15] (131)                  
Investments at fair value [10],[11],[15] $ (133)                  
Investment, Identifier [Axis]: Spruce Bidco I Inc., Health Care Equipment, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[15] 5.00% 5.00% 5.00% 5.00% 5.00%          
Investment, interest rate (as a percent) [10],[12],[15] 9.13% 9.13% 9.13% 9.13% 9.13%          
Investment, principal [10],[13],[15] $ 41,137                  
Investment, cost [10],[15] 40,556                  
Investments at fair value [10],[15] $ 40,549                  
Investment, Identifier [Axis]: Spruce Bidco I Inc., Health Care Equipment, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[15] 5.00% 5.00% 5.00% 5.00% 5.00%          
Investment, interest rate (as a percent) [10],[12],[15] 7.68% 7.68% 7.68% 7.68% 7.68%          
Investment, principal [10],[13],[15]       $ 7,448            
Investment, cost [10],[15] $ 5,070                  
Investments at fair value [10],[15] $ 5,380                  
Investment, Identifier [Axis]: Spruce Bidco I Inc., Health Care Equipment, First Lien Term Loan 3                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[15] 5.25% 5.25% 5.25% 5.25% 5.25%          
Investment, interest rate (as a percent) [10],[12],[15] 6.02% 6.02% 6.02% 6.02% 6.02%          
Investment, principal | ¥ [10],[13],[15]         ¥ 796,342          
Investment, cost [10],[15] $ 5,070                  
Investments at fair value [10],[15] $ 5,434                  
Investment, Identifier [Axis]: Staples, Inc., Office Services & Supplies, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.75% [15] 5.75% [15] 5.75% [15] 5.75% [15] 5.75% [15] 5.75% [21] 5.75% [21] 5.75% [21]    
Investment, interest rate (as a percent) 10.03% [12],[15] 10.03% [12],[15] 10.03% [12],[15] 10.03% [12],[15] 10.03% [12],[15] 10.69% [7],[21] 10.69% [7],[21] 10.69% [7],[21]    
Investment, principal $ 9,888 [13],[15]         $ 13,780 [9],[21]        
Investment, cost 9,571 [15]         13,259 [21]        
Investments at fair value $ 9,150 [15]         $ 12,555 [21]        
Investment, Identifier [Axis]: Staples, Inc., Office Services & Supplies, Fixed Rate Bond                    
Schedule of Investments [Line Items]                    
Investment, interest rate (as a percent) 10.75% [12] 10.75% [12] 10.75% [12] 10.75% [12] 10.75% [12] 10.75% [7] 10.75% [7] 10.75% [7]    
Investment, principal $ 4,835 [13]         $ 6,835 [9]        
Investment, cost 4,790         6,771        
Investments at fair value $ 4,600         $ 6,641        
Investment, Identifier [Axis]: Star Parent, Inc., Life Sciences Tools & Services, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [15] 4.00% 4.00% 4.00% 4.00% 4.00%          
Investment, interest rate (as a percent) [12],[15] 8.30% 8.30% 8.30% 8.30% 8.30%          
Investment, principal [13],[15] $ 9,950                  
Investment, cost [15] 9,649                  
Investments at fair value [15] $ 9,865                  
Investment, Identifier [Axis]: SumUp Holdings Luxembourg, Diversified Financial Services, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 6.50% [10],[11],[14],[15] 6.50% [10],[11],[14],[15] 6.50% [10],[11],[14],[15] 6.50% [10],[11],[14],[15] 6.50% [10],[11],[14],[15] 6.50% [5],[6],[17],[21] 6.50% [5],[6],[17],[21] 6.50% [5],[6],[17],[21]    
Investment, interest rate (as a percent) 8.54% [10],[11],[12],[14],[15] 8.54% [10],[11],[12],[14],[15] 8.54% [10],[11],[12],[14],[15] 8.54% [10],[11],[12],[14],[15] 8.54% [10],[11],[12],[14],[15] 10.04% [5],[6],[7],[17],[21] 10.04% [5],[6],[7],[17],[21] 10.04% [5],[6],[7],[17],[21]    
Investment, principal   € 18,846 [10],[11],[13],[14],[15]       $ 18,846 [5],[6],[9],[17],[21]        
Investment, cost $ 20,199 [10],[11],[14],[15]         20,199 [5],[6],[17],[21]        
Investments at fair value $ 22,122 [10],[11],[14],[15]         $ 20,785 [5],[6],[17],[21]        
Investment, Identifier [Axis]: Supreme Fitness Group NY Holdings, LLC, Leisure Facilities, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [5],[6],[21]           7.00% 7.00% 7.00%    
Investment, principal [5],[6],[9],[21]           $ 0        
Investment, cost [5],[6],[21]           (8)        
Investments at fair value [5],[6],[21]           $ (62)        
Investment, Identifier [Axis]: Supreme Fitness Group NY Holdings, LLC, Leisure Facilities, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [6],[21]           7.00% 7.00% 7.00%    
Investment, interest rate (as a percent) [6],[7],[21]           12.58% 12.58% 12.58%    
Investment, principal [6],[9],[21]           $ 2,721        
Investment, cost [6],[21]           2,706        
Investments at fair value [6],[21]           $ 2,612        
Investment, Identifier [Axis]: Supreme Fitness Group NY Holdings, LLC, Leisure Facilities, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [6],[21]           7.00% 7.00% 7.00%    
Investment, interest rate (as a percent) [6],[7],[21]           12.58% 12.58% 12.58%    
Investment, principal | € [6],[9],[21]             € 3,273      
Investment, cost [6],[21]           $ 3,160        
Investments at fair value [6],[21]           $ 3,142        
Investment, Identifier [Axis]: Supreme Fitness Group NY Holdings, LLC, Leisure Facilities, First Lien Term Loan 3                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [6],[21]           7.00% 7.00% 7.00%    
Investment, interest rate (as a percent) [6],[7],[21]           12.58% 12.58% 12.58%    
Investment, principal [6],[9],[21]           $ 31,778        
Investment, cost [6],[21]           31,612        
Investments at fair value [6],[21]           $ 30,507        
Investment, Identifier [Axis]: Symphone CLO Ltd, Multi-Sector Holdings, CLO Notes                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [14],[15] 5.00% 5.00% 5.00% 5.00% 5.00%          
Investment, interest rate (as a percent) [12],[14],[15] 9.27% 9.27% 9.27% 9.27% 9.27%          
Investment, principal [13],[14],[15] $ 2,000                  
Investment, cost [14],[15] 2,000                  
Investments at fair value [14],[15] $ 1,974                  
Investment, Identifier [Axis]: TBRS, Inc., Health Care Supplies, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[11],[15] 4.75% 4.75% 4.75% 4.75% 4.75%          
Investment, interest rate (as a percent) [10],[11],[12],[15] 9.08% 9.08% 9.08% 9.08% 9.08%          
Investment, principal [10],[11],[13],[15] $ 144                  
Investment, cost [10],[11],[15] 123                  
Investments at fair value [10],[11],[15] $ 121                  
Investment, Identifier [Axis]: TBRS, Inc., Health Care Supplies, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[15] 4.75% 4.75% 4.75% 4.75% 4.75%          
Investment, interest rate (as a percent) [10],[12],[15] 9.08% 9.08% 9.08% 9.08% 9.08%          
Investment, principal [10],[13],[15] $ 16,872                  
Investment, cost [10],[15] 16,732                  
Investments at fair value [10],[15] $ 16,703                  
Investment, Identifier [Axis]: TBRS, Inc., Health Care Supplies, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[11],[15] 4.75% 4.75% 4.75% 4.75% 4.75%          
Investment, principal [10],[11],[13],[15] $ 0                  
Investment, cost [10],[11],[15] (27)                  
Investments at fair value [10],[11],[15] $ (21)                  
Investment, Identifier [Axis]: THL Zinc Ventures Ltd, Diversified Metals & Mining, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, interest rate (as a percent) [6],[7],[17]           13.00% 13.00% 13.00%    
Investment, principal [6],[9],[17]           $ 50,419        
Investment, cost [6],[17]           50,061        
Investments at fair value [6],[17]           $ 50,419        
Investment, Identifier [Axis]: Telephone and Data Systems, Inc., Wireless Telecommunication Services, Subordinated Debt Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 7.00% [10],[14],[15] 7.00% [10],[14],[15] 7.00% [10],[14],[15] 7.00% [10],[14],[15] 7.00% [10],[14],[15] 7.00% [6],[17],[21] 7.00% [6],[17],[21] 7.00% [6],[17],[21]    
Investment, interest rate (as a percent) 11.26% [10],[12],[14],[15] 11.26% [10],[12],[14],[15] 11.26% [10],[12],[14],[15] 11.26% [10],[12],[14],[15] 11.26% [10],[12],[14],[15] 12.25% [6],[7],[17],[21] 12.25% [6],[7],[17],[21] 12.25% [6],[7],[17],[21]    
Investment, principal $ 24,843 [10],[13],[14],[15]         $ 25,031 [6],[9],[17],[21]        
Investment, cost 24,272 [10],[14],[15]         24,343 [6],[17],[21]        
Investments at fair value $ 24,843 [10],[14],[15]         $ 24,405 [6],[17],[21]        
Investment, Identifier [Axis]: Telephone and Data Systems, Inc., Wireless Telecommunication Services, Subordinated Debt Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 7.00% [10],[11],[14],[15] 7.00% [10],[11],[14],[15] 7.00% [10],[11],[14],[15] 7.00% [10],[11],[14],[15] 7.00% [10],[11],[14],[15] 7.00% [5],[6],[17],[21] 7.00% [5],[6],[17],[21] 7.00% [5],[6],[17],[21]    
Investment, principal $ 0 [10],[11],[13],[14],[15]         $ 0 [5],[6],[9],[17],[21]        
Investment, cost (72) [10],[11],[14],[15]         (86) [5],[6],[17],[21]        
Investments at fair value $ 0 [10],[11],[14],[15]         (94) [5],[6],[17],[21]        
Investment, Identifier [Axis]: Telestream 2 LLC, Application Software, Common Stock                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares [10] 744,491 744,491 744,491 744,491 744,491          
Investment, cost [10] $ 7,207                  
Investments at fair value $ 7,207 [10]         0        
Investment owned, percent of net assets (as a percent) 0.50% 0.50% 0.50% 0.50% 0.50%          
Investment, Identifier [Axis]: Telestream 2 LLC, Application Software, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[11],[15] 8.25% 8.25% 8.25% 8.25% 8.25%          
Investment, principal [10],[11],[13],[15] $ 0                  
Investment, cost [10],[11],[15] 0                  
Investments at fair value $ 0 [10],[11],[15]         0        
Investment owned, percent of net assets (as a percent) 0.00% 0.00% 0.00% 0.00% 0.00%          
Investment, Identifier [Axis]: Telestream 2 LLC, Application Software, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[15] 6.25% 6.25% 6.25% 6.25% 6.25%          
Investment, interest rate (as a percent) [10],[12],[15] 10.54% 10.54% 10.54% 10.54% 10.54%          
Investment, principal [10],[13],[15] $ 17,123                  
Investment, cost [10],[15] 17,123                  
Investments at fair value $ 17,123 [10],[15]         $ 0        
Investment owned, percent of net assets (as a percent) 1.20% 1.20% 1.20% 1.20% 1.20%          
Investment, Identifier [Axis]: Telestream Holdings Corporation, Application Software, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [5],[6],[20],[21]           9.75% 9.75% 9.75%    
Investment, principal [5],[6],[9],[20],[21]           $ 1,946        
Investment, cost [5],[6],[20],[21]           1,918        
Investments at fair value [5],[6],[20],[21]           $ 1,727        
Investment, Identifier [Axis]: Telestream Holdings Corporation, Application Software, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [6],[20],[21]           9.75% 9.75% 9.75%    
Investment, principal [6],[9],[20],[21]           $ 26,553        
Investment, cost [6],[20],[21]           25,237        
Investments at fair value [6],[20],[21]           $ 23,898        
Investment, Identifier [Axis]: Ten-X LLC, Interactive Media & Services, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 6.00% [15] 6.00% [15] 6.00% [15] 6.00% [15] 6.00% [15] 6.00% [6],[21] 6.00% [6],[21] 6.00% [6],[21]    
Investment, interest rate (as a percent) 10.25% [12],[15] 10.25% [12],[15] 10.25% [12],[15] 10.25% [12],[15] 10.25% [12],[15] 10.74% [6],[7],[21] 10.74% [6],[7],[21] 10.74% [6],[7],[21]    
Investment, principal $ 19,525 [13],[15]         $ 19,683 [6],[9],[21]        
Investment, cost 18,955 [15]         18,960 [6],[21]        
Investments at fair value $ 17,792 [15]         $ 18,837 [6],[21]        
Investment, Identifier [Axis]: The Avery, Real Estate Operating Companies, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, interest rate, paid in kind (as a percent) 10.00% [10],[19] 10.00% [10],[19] 10.00% [10],[19] 10.00% [10],[19] 10.00% [10],[19] 10.00% [6],[20] 10.00% [6],[20] 10.00% [6],[20] 10.00%  
Investment, principal $ 5,236 [10],[13],[19]         $ 5,065 [6],[9],[20]     $ 5,065  
Investment, cost 4,150 [10],[19]         4,657 [6],[20]        
Investments at fair value $ 3,391 [10],[19]         $ 4,087 [6],[20]     $ 4,112 0
Investment owned, percent of net assets (as a percent) 0.20% 0.20% 0.20% 0.20% 0.20%       0.30%  
Investment, Identifier [Axis]: The Avery, Real Estate Operating Companies, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, interest rate, paid in kind (as a percent) 10.00% [10],[19] 10.00% [10],[19] 10.00% [10],[19] 10.00% [10],[19] 10.00% [10],[19] 10.00% [6],[20] 10.00% [6],[20] 10.00% [6],[20] 10.00%  
Investment, principal $ 21,622 [10],[13],[19]         $ 20,917 [6],[9],[20]     $ 20,917  
Investment, cost 17,167 [10],[19]         19,262 [6],[20]        
Investments at fair value $ 15,241 [10],[19]         $ 18,235 [6],[20]     $ 18,421 0
Investment owned, percent of net assets (as a percent) 1.00% 1.00% 1.00% 1.00% 1.00%       1.20%  
Investment, Identifier [Axis]: The Avery, Real Estate Operating Companies, Membership Interest                    
Schedule of Investments [Line Items]                    
Investment owned, ownership (as a percent) 6.40% [10] 6.40% [10] 6.40% [10] 6.40% [10] 6.40% [10] 6.40% [6] 6.40% [6] 6.40% [6] 6.40%  
Investment, principal $ 0               $ 0  
Investment, cost 0 [10]         $ 0 [6]        
Investments at fair value $ 0 [10]         $ 0 [6]     $ 0 $ 0
Investment owned, percent of net assets (as a percent) 0.00% 0.00% 0.00% 0.00% 0.00%       0.00%  
Investment, Identifier [Axis]: Thrasio, LLC, Broadline Retail, Common Stock                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 321,058 [10] 321,058 [10] 321,058 [10] 321,058 [10] 321,058 [10] 321,058 [6] 321,058 [6] 321,058 [6]    
Investment, principal [6],[9]           $ 0        
Investment, cost $ 0 [10]         0 [6]        
Investments at fair value $ 0 [10]         $ 0 [6]        
Investment, Identifier [Axis]: Thrasio, LLC, Broadline Retail, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 10.00% [10],[15] 10.00% [10],[15] 10.00% [10],[15] 10.00% [10],[15] 10.00% [10],[15] 10.00% [6],[21] 10.00% [6],[21] 10.00% [6],[21]    
Investment, interest rate, paid in kind (as a percent) 14.44% [10],[15] 14.44% [10],[15] 14.44% [10],[15] 14.44% [10],[15] 14.44% [10],[15] 15.54% [6],[21] 15.54% [6],[21] 15.54% [6],[21]    
Investment, principal $ 7,052 [10],[13],[15]         $ 6,141 [6],[9],[21]        
Investment, cost 6,893 [10],[15]         5,952 [6],[21]        
Investments at fair value $ 6,717 [10],[15]         $ 6,018 [6],[21]        
Investment, Identifier [Axis]: Thrasio, LLC, Broadline Retail, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 10.00% [10],[15],[19] 10.00% [10],[15],[19] 10.00% [10],[15],[19] 10.00% [10],[15],[19] 10.00% [10],[15],[19] 10.00% [6],[20],[21] 10.00% [6],[20],[21] 10.00% [6],[20],[21]    
Investment, principal $ 21,640 [10],[13],[15],[19]         $ 18,844 [6],[9],[20],[21]        
Investment, cost 16,279 [10],[15],[19]         16,279 [6],[20],[21]        
Investments at fair value $ 14,715 [10],[15],[19]         $ 16,536 [6],[20],[21]        
Investment, Identifier [Axis]: Touchstone Acquisition, Inc., Health Care Supplies, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [6],[21]           6.00% 6.00% 6.00%    
Investment, interest rate (as a percent) [6],[7],[21]           10.95% 10.95% 10.95%    
Investment, principal [6],[9],[21]           $ 14,508        
Investment, cost [6],[21]           14,426        
Investments at fair value [6],[21]           $ 14,218        
Investment, Identifier [Axis]: Trinitas CLO VI Ltd., Multi-Sector Holdings, CLO Notes                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 7.08% [14],[15] 7.08% [14],[15] 7.08% [14],[15] 7.08% [14],[15] 7.08% [14],[15] 7.08% [17],[21] 7.08% [17],[21] 7.08% [17],[21]    
Investment, interest rate (as a percent) 11.36% [12],[14],[15] 11.36% [12],[14],[15] 11.36% [12],[14],[15] 11.36% [12],[14],[15] 11.36% [12],[14],[15] 12.36% [7],[17],[21] 12.36% [7],[17],[21] 12.36% [7],[17],[21]    
Investment, principal $ 905 [13],[14],[15]         $ 905 [9],[17],[21]        
Investment, cost 854 [14],[15]         852 [17],[21]        
Investments at fair value $ 878 [14],[15]         $ 856 [17],[21]        
Investment, Identifier [Axis]: Trinitas CLO XV DAC, Multi-Sector Holdings, CLO Notes                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 7.71% [14],[15] 7.71% [14],[15] 7.71% [14],[15] 7.71% [14],[15] 7.71% [14],[15] 7.71% [17],[21] 7.71% [17],[21] 7.71% [17],[21]    
Investment, interest rate (as a percent) 11.98% [12],[14],[15] 11.98% [12],[14],[15] 11.98% [12],[14],[15] 11.98% [12],[14],[15] 11.98% [12],[14],[15] 12.99% [7],[17],[21] 12.99% [7],[17],[21] 12.99% [7],[17],[21]    
Investment, principal $ 1,000 [13],[14],[15]         $ 1,000 [9],[17],[21]        
Investment, cost 832 [14],[15]         824 [17],[21]        
Investments at fair value $ 972 [14],[15]         $ 978 [17],[21]        
Investment, Identifier [Axis]: Truck-Lite Co., LLC, Construction Machinery & Heavy Transportation Equipment, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [5],[6],[21]           5.75% 5.75% 5.75%    
Investment, interest rate (as a percent) [5],[6],[7],[21]           10.85% 10.85% 10.85%    
Investment, principal [5],[6],[9],[21]           $ 29        
Investment, cost [5],[6],[21]           (23)        
Investments at fair value [5],[6],[21]           $ 29        
Investment, Identifier [Axis]: Truck-Lite Co., LLC, Construction Machinery & Heavy Transportation Equipment, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.75% [10],[15] 5.75% [10],[15] 5.75% [10],[15] 5.75% [10],[15] 5.75% [10],[15] 5.75% [6],[21] 5.75% [6],[21] 5.75% [6],[21]    
Investment, interest rate (as a percent) 10.03% [10],[12],[15] 10.03% [10],[12],[15] 10.03% [10],[12],[15] 10.03% [10],[12],[15] 10.03% [10],[12],[15] 10.86% [6],[7],[21] 10.86% [6],[7],[21] 10.86% [6],[7],[21]    
Investment, principal $ 31,103 [10],[13],[15]         $ 26,457 [6],[9],[21]        
Investment, cost 30,621 [10],[15]         25,976 [6],[21]        
Investments at fair value $ 30,792 [10],[15]         $ 26,457 [6],[21]        
Investment, Identifier [Axis]: Truck-Lite Co., LLC, Construction Machinery & Heavy Transportation Equipment, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.75% [10],[15] 5.75% [10],[15] 5.75% [10],[15] 5.75% [10],[15] 5.75% [10],[15] 5.75% [5],[6],[21] 5.75% [5],[6],[21] 5.75% [5],[6],[21]    
Investment, interest rate (as a percent) [10],[12],[15] 10.06% 10.06% 10.06% 10.06% 10.06%          
Investment, principal $ 565 [10],[13],[15]         $ 0 [5],[6],[9],[21]        
Investment, cost 559 [10],[15]         (52) [5],[6],[21]        
Investments at fair value $ 559 [10],[15]         $ 0 [5],[6],[21]        
Investment, Identifier [Axis]: Truck-Lite Co., LLC, Construction Machinery & Heavy Transportation Equipment, First Lien Term Loan 3                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[11],[15] 5.75% 5.75% 5.75% 5.75% 5.75%          
Investment, principal [10],[11],[13],[15] $ 0                  
Investment, cost [10],[11],[15] (20)                  
Investments at fair value [10],[11],[15] $ (27)                  
Investment, Identifier [Axis]: Truck-Lite Co., LLC, Construction Machinery & Heavy Transportation Equipment, First Lien Term Loan 4                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[11],[15] 5.75% 5.75% 5.75% 5.75% 5.75%          
Investment, principal [10],[11],[13],[15] $ 0                  
Investment, cost [10],[11],[15] (18)                  
Investments at fair value [10],[11],[15] $ (9)                  
Investment, Identifier [Axis]: Truck-Lite Co., LLC, Construction Machinery & Heavy Transportation Equipment, First Lien Term Loan 5                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[11],[15] 5.75% 5.75% 5.75% 5.75% 5.75%          
Investment, principal [10],[11],[13],[15] $ 0                  
Investment, cost [10],[11],[15] (41)                  
Investments at fair value [10],[11],[15] $ (54)                  
Investment, Identifier [Axis]: Truck-Lite Co., LLC, Construction Machinery & Heavy Transportation Equipment, First Lien Term Loan 6                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[11],[15] 5.75% 5.75% 5.75% 5.75% 5.75%          
Investment, principal [10],[11],[13],[15] $ 0                  
Investment, cost [10],[11],[15] (47)                  
Investments at fair value [10],[11],[15] $ (32)                  
Investment, Identifier [Axis]: USIC Holdings, Inc., Diversified Support Services, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.25% [10],[11],[15] 5.25% [10],[11],[15] 5.25% [10],[11],[15] 5.25% [10],[11],[15] 5.25% [10],[11],[15] 5.25% [5],[6],[21] 5.25% [5],[6],[21] 5.25% [5],[6],[21]    
Investment, interest rate (as a percent) 9.58% [10],[11],[12],[15] 9.58% [10],[11],[12],[15] 9.58% [10],[11],[12],[15] 9.58% [10],[11],[12],[15] 9.58% [10],[11],[12],[15] 10.10% [5],[6],[7],[21] 10.10% [5],[6],[7],[21] 10.10% [5],[6],[7],[21]    
Investment, principal $ 917 [10],[11],[13],[15]         $ 975 [5],[6],[9],[21]        
Investment, cost 900 [10],[11],[15]         955 [5],[6],[21]        
Investments at fair value $ 917 [10],[11],[15]         $ 955 [5],[6],[21]        
Investment, Identifier [Axis]: USIC Holdings, Inc., Diversified Support Services, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.50% [10],[15] 5.50% [10],[15] 5.50% [10],[15] 5.50% [10],[15] 5.50% [10],[15] 5.50% [6],[21] 5.50% [6],[21] 5.50% [6],[21]    
Investment, interest rate (as a percent) 9.83% [10],[12],[15] 9.83% [10],[12],[15] 9.83% [10],[12],[15] 9.83% [10],[12],[15] 9.83% [10],[12],[15] 10.35% [6],[7],[21] 10.35% [6],[7],[21] 10.35% [6],[7],[21]    
Investment, principal $ 15,694 [10],[13],[15]         $ 15,773 [6],[9],[21]        
Investment, cost 15,555 [10],[15]         15,617 [6],[21]        
Investments at fair value $ 15,694 [10],[15]         $ 15,618 [6],[21]        
Investment, Identifier [Axis]: USIC Holdings, Inc., Diversified Support Services, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [10],[11],[15] 5.50% [5],[6],[21] 5.50% [5],[6],[21] 5.50% [5],[6],[21]    
Investment, interest rate (as a percent) 9.83% [10],[11],[12],[15] 9.83% [10],[11],[12],[15] 9.83% [10],[11],[12],[15] 9.83% [10],[11],[12],[15] 9.83% [10],[11],[12],[15] 10.35% [5],[6],[7],[21] 10.35% [5],[6],[7],[21] 10.35% [5],[6],[7],[21]    
Investment, principal $ 314 [10],[11],[13],[15]         $ 24 [5],[6],[9],[21]        
Investment, cost 314 [10],[11],[15]         24 [5],[6],[21]        
Investments at fair value $ 314 [10],[11],[15]         $ 15 [5],[6],[21]        
Investment, Identifier [Axis]: Verona Pharma, Inc., Pharmaceuticals, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, interest rate (as a percent) 9.70% [10],[12],[14] 9.70% [10],[12],[14] 9.70% [10],[12],[14] 9.70% [10],[12],[14] 9.70% [10],[12],[14] 11.00% [6],[7],[17] 11.00% [6],[7],[17] 11.00% [6],[7],[17]    
Investment, principal $ 2,512 [10],[13],[14]         $ 2,512 [6],[9],[17]        
Investment, cost 2,473 [10],[14]         2,466 [6],[17]        
Investments at fair value $ 2,512 [10],[14]         $ 2,468 [6],[17]        
Investment, Identifier [Axis]: Verona Pharma, Inc., Pharmaceuticals, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, interest rate (as a percent) 9.70% [10],[12],[14] 9.70% [10],[12],[14] 9.70% [10],[12],[14] 9.70% [10],[12],[14] 9.70% [10],[12],[14] 11.00% [6],[7],[17] 11.00% [6],[7],[17] 11.00% [6],[7],[17]    
Investment, principal $ 3,198 [10],[13],[14]         $ 3,198 [6],[9],[17]        
Investment, cost 3,134 [10],[14]         3,134 [6],[17]        
Investments at fair value $ 3,198 [10],[14]         3,142 [6],[17]        
Investment, Identifier [Axis]: Verona Pharma, Inc., Pharmaceuticals, First Lien Term Loan 3                    
Schedule of Investments [Line Items]                    
Investment, interest rate (as a percent) [10],[12],[14] 9.70% 9.70% 9.70% 9.70% 9.70%          
Investment, principal $ 3,426 [10],[13],[14]         0 [5],[6],[9],[17]        
Investment, cost 3,357 [10],[14]         0 [5],[6],[17]        
Investments at fair value $ 3,366 [10],[14]         0 [5],[6],[17]        
Investment, Identifier [Axis]: Verona Pharma, Inc., Pharmaceuticals, First Lien Term Loan 4                    
Schedule of Investments [Line Items]                    
Investment, interest rate (as a percent) [10],[11],[12],[14] 11.00% 11.00% 11.00% 11.00% 11.00%          
Investment, principal $ 0 [10],[11],[13],[14]         0 [5],[6],[9],[17]        
Investment, cost 0 [10],[11],[14]         0 [5],[6],[17]        
Investments at fair value $ 0 [10],[11],[14]         0 [5],[6],[17]        
Investment, Identifier [Axis]: Verona Pharma, Inc., Pharmaceuticals, First Lien Term Loan 5                    
Schedule of Investments [Line Items]                    
Investment, principal [6],[9],[17],[18]           4,652        
Investment, cost [6],[17],[18]           4,652        
Investments at fair value [6],[17],[18]           4,699        
Investment, Identifier [Axis]: Verona Pharma, Inc., Pharmaceuticals, First Lien Term Loan 6                    
Schedule of Investments [Line Items]                    
Investment, principal [5],[6],[9],[17],[18]           0        
Investment, cost [5],[6],[17],[18]           0        
Investments at fair value [5],[6],[17],[18]           $ 0        
Investment, Identifier [Axis]: WP CPP Holdings, LLC, Aerospace & Defense, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 7.25% [10],[11],[15] 7.25% [10],[11],[15] 7.25% [10],[11],[15] 7.25% [10],[11],[15] 7.25% [10],[11],[15] 6.75% [5],[6],[21] 6.75% [5],[6],[21] 6.75% [5],[6],[21]    
Investment, principal $ 0 [10],[11],[13],[15]         $ 0 [5],[6],[9],[21]        
Investment, cost (60) [10],[11],[15]         (70) [5],[6],[21]        
Investments at fair value $ 0 [10],[11],[15]         $ (19) [5],[6],[21]        
Investment, Identifier [Axis]: WP CPP Holdings, LLC, Aerospace & Defense, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 7.25% [10],[15] 7.25% [10],[15] 7.25% [10],[15] 7.25% [10],[15] 7.25% [10],[15] 7.50% [6],[21] 7.50% [6],[21] 7.50% [6],[21]    
Investment, interest rate (as a percent) 11.57% [10],[12],[15] 11.57% [10],[12],[15] 11.57% [10],[12],[15] 11.57% [10],[12],[15] 11.57% [10],[12],[15] 8.39% [6],[7],[21] 8.39% [6],[7],[21] 8.39% [6],[7],[21]    
Investment, interest rate, paid in kind (as a percent) [6],[21]           4.13% 4.13% 4.13%    
Investment, principal $ 30,983 [10],[13],[15]         $ 30,570 [6],[9],[21]        
Investment, cost 30,442 [10],[15]         29,933 [6],[21]        
Investments at fair value $ 30,983 [10],[15]         $ 30,396 [6],[21]        
Investment, Identifier [Axis]: WP CPP Holdings, LLC, Aerospace & Defense, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 7.25% [10],[15] 7.25% [10],[15] 7.25% [10],[15] 7.25% [10],[15] 7.25% [10],[15] 7.50% [6],[21] 7.50% [6],[21] 7.50% [6],[21]    
Investment, interest rate (as a percent) 11.57% [10],[12],[15] 11.57% [10],[12],[15] 11.57% [10],[12],[15] 11.57% [10],[12],[15] 11.57% [10],[12],[15] 8.39% [6],[7],[21] 8.39% [6],[7],[21] 8.39% [6],[7],[21]    
Investment, interest rate, paid in kind (as a percent) [6],[21]           4.13% 4.13% 4.13%    
Investment, principal $ 1,468 [10],[13],[15]         $ 1,449 [6],[9],[21]        
Investment, cost 1,468 [10],[15]         1,449 [6],[21]        
Investments at fair value $ 1,468 [10],[15]         $ 1,448 [6],[21]        
Investment, Identifier [Axis]: Werner Finco LP, Building Products, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [10],[15] 5.50% 5.50% 5.50% 5.50% 5.50%          
Investment, interest rate (as a percent) [10],[12],[15] 9.82% 9.82% 9.82% 9.82% 9.82%          
Investment, principal [10],[13],[15] $ 12,814                  
Investment, cost [10],[15] 12,623                  
Investments at fair value [10],[15] $ 12,622                  
Investment, Identifier [Axis]: Win Brands Group LLC, Housewares & Specialties, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 14.00% [10],[15] 14.00% [10],[15] 14.00% [10],[15] 14.00% [10],[15] 14.00% [10],[15] 14.00% [6],[21] 14.00% [6],[21] 14.00% [6],[21]    
Investment, interest rate (as a percent) 13.32% [10],[12],[15] 13.32% [10],[12],[15] 13.32% [10],[12],[15] 13.32% [10],[12],[15] 13.32% [10],[12],[15] 12.85% [6],[7],[21] 12.85% [6],[7],[21] 12.85% [6],[7],[21]    
Investment, interest rate, paid in kind (as a percent) 5.00% [10],[15] 5.00% [10],[15] 5.00% [10],[15] 5.00% [10],[15] 5.00% [10],[15] 6.00% [6],[21] 6.00% [6],[21] 6.00% [6],[21]    
Investment, principal $ 2,588 [10],[13],[15]         $ 2,782 [6],[9],[21]        
Investment, cost 2,583 [10],[15]         2,760 [6],[21]        
Investments at fair value $ 2,348 [10],[15]         $ 2,546 [6],[21]        
Investment, Identifier [Axis]: Win Brands Group LLC, Housewares & Specialties, Warrants                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 4,871 [10] 4,871 [10] 4,871 [10] 4,871 [10] 4,871 [10] 4,871 [6] 4,871 [6] 4,871 [6]    
Investment, cost $ 46 [10]         $ 46 [6]        
Investments at fair value $ 0 [10]         $ 0 [6]        
Investment, Identifier [Axis]: Win Brands Group LLC, Integrated Telecommunication Services, Common Stock                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares [6]           127,452 127,452 127,452    
Investment, cost [6]           $ 2,057        
Investments at fair value [6]           $ 1,657        
Investment, Identifier [Axis]: X Holdings Corp., Interactive Media & Services, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [15] 6.50% 6.50% 6.50% 6.50% 6.50%          
Investment, interest rate (as a percent) [12],[15] 10.93% 10.93% 10.93% 10.93% 10.93%          
Investment, principal [13],[15] $ 6,252                  
Investment, cost [15] 6,206                  
Investments at fair value [15] $ 6,120                  
Investment, Identifier [Axis]: Zep Inc., Specialty Chemicals, First Lien Term Loan                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [6],[21]           4.00% 4.00% 4.00%    
Investment, interest rate (as a percent) [6],[7],[21]           8.25% 8.25% 8.25%    
Investment, principal [6],[9],[21]           $ 19,431        
Investment, cost [6],[21]           19,407        
Investments at fair value [6],[21]           $ 19,431        
Investment, Identifier [Axis]: athenahealth Group Inc., Health Care Technology, Preferred Equity                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 21,523 [10] 21,523 [10] 21,523 [10] 21,523 [10] 21,523 [10] 21,523 [6] 21,523 [6] 21,523 [6]    
Investment, cost $ 20,789 [10]         $ 20,789 [6]        
Investments at fair value $ 30,096 [10]         $ 24,326 [6]        
Investment, Identifier [Axis]: iCIMs, Inc., Application Software, First Lien Revolver                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.75% [10],[11],[15] 5.75% [10],[11],[15] 5.75% [10],[11],[15] 5.75% [10],[11],[15] 5.75% [10],[11],[15] 5.75% [5],[6],[21] 5.75% [5],[6],[21] 5.75% [5],[6],[21]    
Investment, interest rate (as a percent) 10.03% [10],[11],[12],[15] 10.03% [10],[11],[12],[15] 10.03% [10],[11],[12],[15] 10.03% [10],[11],[12],[15] 10.03% [10],[11],[12],[15] 10.67% [5],[6],[7],[21] 10.67% [5],[6],[7],[21] 10.67% [5],[6],[7],[21]    
Investment, principal $ 339 [10],[11],[13],[15]         $ 678 [5],[6],[9],[21]        
Investment, cost 310 [10],[11],[15]         643 [5],[6],[21]        
Investments at fair value $ 275 [10],[11],[15]         $ 607 [5],[6],[21]        
Investment, Identifier [Axis]: iCIMs, Inc., Application Software, First Lien Term Loan 1                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 5.75% [10],[15] 5.75% [10],[15] 5.75% [10],[15] 5.75% [10],[15] 5.75% [10],[15] 5.75% [6],[21] 5.75% [6],[21] 5.75% [6],[21]    
Investment, interest rate (as a percent) 10.03% [10],[12],[15] 10.03% [10],[12],[15] 10.03% [10],[12],[15] 10.03% [10],[12],[15] 10.03% [10],[12],[15] 10.67% [6],[7],[21] 10.67% [6],[7],[21] 10.67% [6],[7],[21]    
Investment, principal $ 25,511 [10],[13],[15]         $ 25,491 [6],[9],[21]        
Investment, cost 25,331 [10],[15]         25,261 [6],[21]        
Investments at fair value $ 24,794 [10],[15]         $ 24,696 [6],[21]        
Investment, Identifier [Axis]: iCIMs, Inc., Application Software, First Lien Term Loan 2                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) 6.25% [10],[15] 6.25% [10],[15] 6.25% [10],[15] 6.25% [10],[15] 6.25% [10],[15] 6.25% [6],[21] 6.25% [6],[21] 6.25% [6],[21]    
Investment, interest rate (as a percent) 10.53% [10],[12],[15] 10.53% [10],[12],[15] 10.53% [10],[12],[15] 10.53% [10],[12],[15] 10.53% [10],[12],[15] 11.17% [6],[7],[21] 11.17% [6],[7],[21] 11.17% [6],[7],[21]    
Investment, principal $ 3,636 [10],[13],[15]         $ 3,636 [6],[9],[21]        
Investment, cost 3,614 [10],[15]         3,609 [6],[21]        
Investments at fair value $ 3,587 [10],[15]         $ 3,581 [6],[21]        
Investment, Identifier [Axis]: iCIMs, Inc., Application Software, First Lien Term Loan 3                    
Schedule of Investments [Line Items]                    
Investment, basis spread, variable rate (as a percent) [5],[6],[21]           6.25% 6.25% 6.25%    
Investment, principal [5],[6],[9],[21]           $ 0        
Investment, cost [5],[6],[21]           0        
Investments at fair value [5],[6],[21]           $ 0        
Investment, Identifier [Axis]: scPharmaceuticals Inc., Pharmaceuticals, Warrants                    
Schedule of Investments [Line Items]                    
Investment owned, balance (in shares) | shares 53,700 [10] 53,700 [10] 53,700 [10] 53,700 [10] 53,700 [10] 53,700 [6] 53,700 [6] 53,700 [6]    
Investment, cost $ 175 [10]         $ 175 [6]        
Investments at fair value $ 81 [10]         $ 121 [6]        
[1] As defined in the Investment Company Act, the Company is deemed to be both an "Affiliated Person" of and to "Control" these portfolio companies as the Company owns more than 25% of the portfolio company's outstanding voting securities or has the power to exercise control over management or policies of such portfolio company (including through a management agreement). See Schedule 12-14 in the accompanying notes to the Consolidated Financial Statements for transactions during the nine months ended June 30, 2025 in which the issuer was both an Affiliated Person and a portfolio company that the Company is deemed to control.
[2] Control Investments generally are defined by the Investment Company Act of 1940, as amended (the "Investment Company Act"), as investments in companies in which the Company owns more than 25% of the voting securities or maintains greater than 50% of the board representation.
[3] Affiliate Investments generally are defined by the Investment Company Act as investments in companies in which the Company owns between 5% and 25% of the voting securities.
[4] Non-Control/Non-Affiliate Investments are investments that are neither Control Investments nor Affiliate Investments.
[5] Investment had undrawn commitments. Unamortized fees are classified as unearned income which reduces cost basis, which may result in a negative cost basis. A negative fair value may result from the unfunded commitment being valued below par.
[6] As of September 30, 2024, these investments were categorized as Level 3 within the fair value hierarchy established by ASC 820.
[7] Interest rates may be adjusted from period to period on certain term loans and revolvers. These rate adjustments may be either temporary in nature due to tier pricing arrangements or financial or payment covenant violations in the original credit agreements or permanent in nature per loan amendment or waiver documents.
[8] This investment represents a participation interest in the underlying securities shown.
[9] Principal includes accumulated PIK interest and is net of repayments, if any. “£” signifies the investment is denominated in British Pounds. "€" signifies the investment is denominated in Euros. All other investments are denominated in U.S. dollars.
[10] As of June 30, 2025, these investments were categorized as Level 3 within the fair value hierarchy established by Financial Accounting Standards Board ("FASB") guidance under Accounting Standards Codification ("ASC") Topic 820, Fair Value Measurements and Disclosures ("ASC 820").
[11] Investment had undrawn commitments. Unamortized fees are classified as unearned income which reduces cost basis, which may result in a negative cost basis. A negative fair value may result from the unfunded commitment being valued below par.
[12] Interest rates may be adjusted from period to period on certain term loans and revolvers. These rate adjustments may be either temporary in nature due to tier pricing arrangements or financial or payment covenant violations in the original credit agreements or permanent in nature per loan amendment or waiver documents.
[13] Principal includes accumulated payment in kind ("PIK") interest and is net of repayments, if any. “£” signifies the investment is denominated in British Pounds. "€" signifies the investment is denominated in Euros. "C$" signifies the investment is denominated in Canadian dollar. "¥" signifies the investment is denominated in Japanese Yen. All other investments are denominated in U.S. dollars.
[14] Investment is not a "qualifying asset" as defined under Section 55(a) of the Investment Company Act. Under the Investment Company Act, the Company may not acquire any non-qualifying asset unless, at the time the acquisition is made, qualifying assets represent at least 70% of the Company's total assets. As of June 30, 2025, qualifying assets represented 73.0% of the Company's total assets and non-qualifying assets represented 27.0% of the Company's total assets.
[15] The interest rate on the principal balance outstanding for most of the floating rate loans is indexed to the secured overnight financing rate ("SOFR"), the euro interbank offered rate ("EURIBOR" or "E"), the sterling overnight index average ("SONIA") and/or an alternate base rate (e.g., prime rate), which typically resets semi-annually, quarterly, or monthly at the borrower's option. The borrower may also elect to have multiple interest reset periods for each loan. For each of these loans, the Company has provided the applicable margin over the reference rate based on each respective credit agreement and the cash interest rate as of period end. As of June 30, 2025, the reference rates for the Company's variable rate loans were the 30-day SOFR at 4.32%, the 90-day SOFR at 4.29%, the 180-day SOFR at 4.15%, the PRIME at 7.50%, the SONIA at 4.32%, the Tokyo Overnight Average Rate ("TONA") at 0.75%, the 30-day Canadian Overnight Repo Rate Average ("CORRA") at 2.75%, the 30-day EURIBOR at 1.93%, the 90-day EURIBOR at 1.94% and the 180-day EURIBOR at 2.05%. Most loans include an interest floor, which generally ranges from 0% to 3.00%. SOFR and SONIA based contracts may include a credit spread adjustment that is charged in addition to the base rate and the stated spread.
[16] This investment represents a revenue interest financing term loan in which the Company receives periodic interest payments based on a percentage of revenues earned at the respective portfolio company over the life of the loan.
[17] Investment is not a "qualifying asset" as defined under Section 55(a) of the Investment Company Act. Under the Investment Company Act, the Company may not acquire any non-qualifying asset unless, at the time the acquisition is made, qualifying assets represent at least 70% of the Company's total assets. As of September 30, 2024, qualifying assets represented 74.4% of the Company's total assets and non-qualifying assets represented 25.6% of the Company's total assets.
[18] This investment represents a revenue interest financing term loan in which the Company receives periodic interest payments based on a percentage of revenues earned at the respective portfolio company over the life of the loan.
[19] This investment was on non-accrual status as of June 30, 2025.
[20] This investment was on non-accrual status as of September 30, 2024.
[21] The interest rate on the principal balance outstanding for most of the floating rate loans is indexed to SOFR, EURIBOR, SONIA and/or an alternate base rate (e.g., prime rate), which typically resets semi-annually, quarterly, or monthly at the borrower's option. The borrower may also elect to have multiple interest reset periods for each loan. For each of these loans, the Company has provided the applicable margin over the reference rate based on each respective credit agreement and the cash interest rate as of period end. As of September 30, 2024, the reference rates for the Company's variable rate loans were the 30-day SOFR at 4.85%, the 90-day SOFR at 4.59%, the 180-day SOFR at 4.25%, the PRIME at 8.00%, the SONIA at 5.50%, the 90-day EURIBOR at 3.54% and the 180-day EURIBOR at 3.11%. Most loans include an interest floor, which generally ranges from 0% to 3.00%. SOFR and SONIA based contracts may include a credit spread adjustment that is charged in addition to the base rate and the stated spread.
[22] This investment represents Seller Earn Out Shares in Alvotech Holdings S.A. The Seller Earn Out Shares will vest if, at any time through June 16, 2027, the Alvotech Holdings S.A. common share price is at or above a volume weighted average price ("VWAP") of $20.00 per share for any ten trading days within any twenty trading day period.
[23] This investment represents Seller Earn Out Shares in Alvotech Holdings S.A. The Seller Earn Out Shares will vest if, at any time through June 16, 2027, the Alvotech Holdings S.A. common share price is at or above a VWAP of $20.00 per share for any ten trading days within any twenty trading day period.
[24] Income producing through payment of dividends or distributions.
[25] This investment was renamed during the three months ended June 30, 2024. For the periods prior to June 30, 2024, this investment was referenced as SCP Eye Care Services, LLC.
[26] Income producing through payment of dividends or distributions.
[27] See Note 3 in the accompanying notes to the Consolidated Financial Statements for portfolio composition of the Company's joint ventures.
[28] This investment was valued using net asset value as a practical expedient for fair value. Consistent with ASC 820, these investments are excluded from the hierarchical levels.
[29] See Note 3 in the accompanying notes to the Consolidated Financial Statements for portfolio composition of the Company's joint ventures.
[30] This investment was valued using net asset value as a practical expedient for fair value. Consistent with ASC 820, these investments are excluded from the hierarchical levels.
[31] This investment represents a credit default swap that functions, in substance, like a credit linked note and represents a credit risk transfer for a pool of reference assets owned by a bank. The Company fully funded margin up front and in return the Company receives periodic interest payments. The Company’s risk of loss is limited to the principal amount disclosed herein. The reference assets are primarily composed of investment grade corporate debt. The Company may be exposed to counterparty risk, which could make it difficult for the Company to collect on obligations, thereby resulting in potentially significant losses. In addition, the Company only has a contractual relationship with the counterparty bank, and not with the reference obligors of the reference assets. Accordingly, the Company generally may have no right to directly enforce compliance by the reference obligors with the terms of the reference assets. The Company will not directly benefit from the reference assets and will not have the benefit of the remedies that would normally be available to a holder of such reference assets. In addition, in the event of the insolvency of the counterparty bank, the Company may be treated as a general creditor of such counterparty bank, and will not have any claim with respect to the reference assets.
[32] This investment represents a credit default swap that functions, in substance, like a credit linked note and represents a credit risk transfer for a pool of reference assets owned by a bank. The Company fully funded margin up front and in return the Company receives periodic interest payments. The Company’s risk of loss is limited to the principal amount disclosed herein. The reference assets are primarily composed of investment grade corporate debt. The Company may be exposed to counterparty risk, which could make it difficult for the Company to collect on obligations, thereby resulting in potentially significant losses. In addition, the Company only has a contractual relationship with the counterparty bank, and not with the reference obligors of the reference assets. Accordingly, the Company generally may have no right to directly enforce compliance by the reference obligors with the terms of the reference assets. The Company will not directly benefit from the reference assets and will not have the benefit of the remedies that would normally be available to a holder of such reference assets. In addition, in the event of the insolvency of the counterparty bank, the Company may be treated as a general creditor of such counterparty bank, and will not have any claim with respect to the reference assets.