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INVESTMENTS - Sierra Senior Loan Strategy JV I LLC (Details)
$ in Thousands
 3 Months Ended 6 Months Ended
Feb. 25, 2022
member
Jun. 30, 2025
USD ($)
Jun. 30, 2024
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2024
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Aug. 12, 2022
USD ($)
Jul. 08, 2021
USD ($)
Feb. 08, 2021
USD ($)
May 13, 2020
USD ($)
Schedule of Investments [Line Items]                      
Number of members | member 2                    
Total dividend income   $ 14,593 $ 11,734 $ 25,335 $ 20,210            
Fair Value   2,623,882   2,623,882   $ 2,449,272          
Cost   2,635,830   2,635,830   2,522,696          
Investment, Identifier [Axis]: 1WorldSync, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   7,030 [1],[2],[3]   7,030 [1],[2],[3]   7,049 [4],[5],[6]          
Cost   7,028 [1],[2],[3]   7,028 [1],[2],[3]   7,031 [4],[5],[6]          
Investment, Identifier [Axis]: A.T. Holdings II LTD, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   7,902 [3],[7],[8]   7,902 [3],[7],[8]   8,479 [6],[9],[10]          
Cost   11,875 [3],[7],[8]   11,875 [3],[7],[8]   11,875 [6],[9],[10]          
Investment, Identifier [Axis]: AD Bidco, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   13,029 [1],[2],[3],[11]   13,029 [1],[2],[3],[11]   10,099 [4],[5],[6],[12]          
Cost   12,898 [1],[2],[3],[11]   12,898 [1],[2],[3],[11]   9,794 [4],[5],[6],[12]          
Investment, Identifier [Axis]: AD Bidco, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (14) [1],[2],[3],[11]   (14) [1],[2],[3],[11]   0 [4],[5],[6],[12]          
Cost   (26) [1],[2],[3],[11]   (26) [1],[2],[3],[11]   (28) [4],[5],[6],[12]          
Investment, Identifier [Axis]: ADB Safegate, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[6],[10]           6,523          
Cost [4],[5],[6],[10]           7,232          
Investment, Identifier [Axis]: AIT Worldwide Logistics Holdings, Inc., Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   600 [3],[13]   600 [3],[13]   550 [6],[14]          
Cost   349 [3],[13]   349 [3],[13]   349 [6],[14]          
Investment, Identifier [Axis]: AMMC CLO 22, Limited Series 2018-22A, Subordinated Structured Notes                      
Schedule of Investments [Line Items]                      
Fair Value   469 [3],[8],[13],[15]   469 [3],[8],[13],[15]   1,733 [6],[10],[16]          
Cost   468 [3],[8],[13],[15]   468 [3],[8],[13],[15]   2,439 [6],[10],[16]          
Investment, Identifier [Axis]: APC1 Holding, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,700 [2],[3],[8],[17]   2,700 [2],[3],[8],[17]   2,370 [5],[6],[10],[18]          
Cost   2,330 [2],[3],[8],[17]   2,330 [2],[3],[8],[17]   2,324 [5],[6],[10],[18]          
Investment, Identifier [Axis]: APOG Bidco Pty Ltd, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [5],[6],[10],[19]           864          
Cost [5],[6],[10],[19]           1,030          
Investment, Identifier [Axis]: ASC Communications, LLC, Class A Units                      
Schedule of Investments [Line Items]                      
Fair Value   954 [3],[13]   954 [3],[13]   869 [6]          
Cost   539 [3],[13]   539 [3],[13]   539 [6]          
Investment, Identifier [Axis]: ASC Communications, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,136 [1],[2],[3]   6,136 [1],[2],[3]   7,344 [5],[6],[20]          
Cost   6,090 [1],[2],[3]   6,090 [1],[2],[3]   7,277 [5],[6],[20]          
Investment, Identifier [Axis]: ASC Communications, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [1],[2],[3],[11]   0 [1],[2],[3],[11]   0 [5],[6],[12],[20]          
Cost   (7) [1],[2],[3],[11]   (7) [1],[2],[3],[11]   (9) [5],[6],[12],[20]          
Investment, Identifier [Axis]: ATL II MRO Holdings Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   18,987 [2],[3],[21]   18,987 [2],[3],[21]   19,021 [4],[5],[6]          
Cost   18,933 [2],[3],[21]   18,933 [2],[3],[21]   18,994 [4],[5],[6]          
Investment, Identifier [Axis]: ATL II MRO Holdings Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (39) [2],[3],[11],[21]   (39) [2],[3],[11],[21]   (49) [4],[5],[6],[12]          
Cost   (44) [2],[3],[11],[21]   (44) [2],[3],[11],[21]   (50) [4],[5],[6],[12]          
Investment, Identifier [Axis]: AVSC Holding Corp., First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [5],[20]           148          
Cost [5],[20]           148          
Investment, Identifier [Axis]: AVSC Holding Corp., First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [5],[20]           2          
Cost [5],[20]           2          
Investment, Identifier [Axis]: Accelerant Holdings, Class A Convertible Preferred Equity                      
Schedule of Investments [Line Items]                      
Fair Value   6,601 [3],[13]   6,601 [3],[13]   6,347 [6],[14]          
Cost   5,000 [3],[13]   5,000 [3],[13]   5,000 [6],[14]          
Investment, Identifier [Axis]: Accelerant Holdings, Class B Convertible Preferred Equity                      
Schedule of Investments [Line Items]                      
Fair Value   2,470 [3],[13]   2,470 [3],[13]   2,285 [6],[14]          
Cost   1,667 [3],[13]   1,667 [3],[13]   1,667 [6],[14]          
Investment, Identifier [Axis]: Accelerant Holdings, Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value   8,543 [3],[13]   8,543 [3],[13]   7,840 [6],[14]          
Cost   7,840 [3],[13]   7,840 [3],[13]   7,840 [6],[14]          
Investment, Identifier [Axis]: Accelevation LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [1],[2],[3],[11]   3,044   3,044              
Cost [1],[2],[3],[11]   3,038   3,038              
Investment, Identifier [Axis]: Accelevation LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [1],[2],[3],[11]   331   331              
Cost [1],[2],[3],[11]   330   330              
Investment, Identifier [Axis]: Acclime Holdings HK Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,453 [2],[3],[8],[22]   2,453 [2],[3],[8],[22]   2,438 [5],[6],[10],[23]          
Cost   2,473 [2],[3],[8],[22]   2,473 [2],[3],[8],[22]   2,467 [5],[6],[10],[23]          
Investment, Identifier [Axis]: Acclime Holdings HK Limited, Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[8]   229   229              
Cost [3],[8]   229   229              
Investment, Identifier [Axis]: Accurus Aerospace Corporation, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[13]   0 [3],[13]   0 [6],[14]          
Cost   438 [3],[13]   438 [3],[13]   438 [6],[14]          
Investment, Identifier [Axis]: Accurus Aerospace Corporation, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   12,958 [1],[2],[3]   12,958 [1],[2],[3]   11,612 [4],[5],[6]          
Cost   13,051 [1],[2],[3]   13,051 [1],[2],[3]   11,900 [4],[5],[6]          
Investment, Identifier [Axis]: Accurus Aerospace Corporation, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value [3],[13]   0   0              
Cost [3],[13]   18   18              
Investment, Identifier [Axis]: Accurus Aerospace Corporation, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   1,291 [2],[3],[11],[21]   1,291 [2],[3],[11],[21]   1,768 [4],[5],[6],[12]          
Cost   1,309 [2],[3],[11],[21]   1,309 [2],[3],[11],[21]   1,825 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Acogroup, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,701 [2],[3],[8],[17],[24]   3,701 [2],[3],[8],[17],[24]   5,412 [5],[6],[10],[25]          
Cost   7,959 [2],[3],[8],[17],[24]   7,959 [2],[3],[8],[17],[24]   7,708 [5],[6],[10],[25]          
Investment, Identifier [Axis]: Adhefin International, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,946 [2],[3],[8],[11],[17]   1,946 [2],[3],[8],[11],[17]   1,716 [5],[6],[10],[12],[18]          
Cost   1,772 [2],[3],[8],[11],[17]   1,772 [2],[3],[8],[11],[17]   1,768 [5],[6],[10],[12],[18]          
Investment, Identifier [Axis]: Adhefin International, Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   429 [2],[3],[8],[17]   429 [2],[3],[8],[17]   326 [5],[6],[10],[18]          
Cost   394 [2],[3],[8],[17]   394 [2],[3],[8],[17]   341 [5],[6],[10],[18]          
Investment, Identifier [Axis]: Advantage Software Company (The), LLC, Class A1 Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   534 [3],[13]   534 [3],[13]   593 [6],[14]          
Cost   280 [3],[13]   280 [3],[13]   280 [6],[14]          
Investment, Identifier [Axis]: Advantage Software Company (The), LLC, Class A2 Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   138 [3],[13]   138 [3],[13]   153 [6],[14]          
Cost   72 [3],[13]   72 [3],[13]   72 [6],[14]          
Investment, Identifier [Axis]: Advantage Software Company (The), LLC, Class B1 Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[13]   0 [3],[13]   0 [6],[14]          
Cost   9 [3],[13]   9 [3],[13]   9 [6],[14]          
Investment, Identifier [Axis]: Advantage Software Company (The), LLC, Class B2 Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[13]   0 [3],[13]   0 [6],[14]          
Cost   2 [3],[13]   2 [3],[13]   2 [6],[14]          
Investment, Identifier [Axis]: Aegros Holdco 2 Ltd, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value [3],[8],[13]   12   12              
Cost [3],[8],[13]   12   12              
Investment, Identifier [Axis]: Aegros Holdco 2 Ltd, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[8]   6,165   6,165              
Cost [3],[8]   5,976   5,976              
Investment, Identifier [Axis]: Air Canada 2020-2 Class B Pass Through Trust, Structured Secured Note - Class B                      
Schedule of Investments [Line Items]                      
Fair Value   1,812   1,812   2,411          
Cost   1,799   1,799   2,370          
Investment, Identifier [Axis]: AirX Climate Solutions, Inc., First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   3,224 [2],[3],[21]   3,224 [2],[3],[21]   2,710 [4],[5],[6]          
Cost   3,254 [2],[3],[21]   3,254 [2],[3],[21]   2,707 [4],[5],[6]          
Investment, Identifier [Axis]: AirX Climate Solutions, Inc., First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   3,244 [2],[3],[11],[21]   3,244 [2],[3],[11],[21]   3,828 [4],[5],[6],[12]          
Cost   3,202 [2],[3],[11],[21]   3,202 [2],[3],[11],[21]   3,754 [4],[5],[6],[12]          
Investment, Identifier [Axis]: AirX Climate Solutions, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (5) [2],[3],[11],[21]   (5) [2],[3],[11],[21]   0 [4],[5],[6],[12]          
Cost   (14) [2],[3],[11],[21]   (14) [2],[3],[11],[21]   (15) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Aldinger Company, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[11]   1,343   1,343              
Cost [3],[11]   1,343   1,343              
Investment, Identifier [Axis]: AlliA Insurance Brokers NV, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,447 [2],[3],[8],[11],[17]   5,447 [2],[3],[8],[11],[17]   4,569 [5],[6],[10],[12],[25]          
Cost   4,879 [2],[3],[8],[11],[17]   4,879 [2],[3],[8],[11],[17]   4,646 [5],[6],[10],[12],[25]          
Investment, Identifier [Axis]: Alpine SG, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   12,775 [2],[3],[15],[21]   12,775 [2],[3],[15],[21]   22,949 [4],[5],[6],[16]          
Cost   12,522 [2],[3],[15],[21]   12,522 [2],[3],[15],[21]   22,664 [4],[5],[6],[16]          
Investment, Identifier [Axis]: Amalfi Midco, Class B Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   2,711 [3],[8],[13]   2,711 [3],[8],[13]   1,239 [6],[10],[14]          
Cost   1,115 [3],[8],[13]   1,115 [3],[8],[13]   1,115 [6],[10],[14]          
Investment, Identifier [Axis]: Amalfi Midco, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   341 [3],[8]   341 [3],[8]   290 [6],[10]          
Cost   325 [3],[8]   325 [3],[8]   301 [6],[10]          
Investment, Identifier [Axis]: Amalfi Midco, Subordinated Loan Notes                      
Schedule of Investments [Line Items]                      
Fair Value   6,350 [3],[8]   6,350 [3],[8]   5,492 [6],[10]          
Cost   5,696 [3],[8]   5,696 [3],[8]   5,416 [6],[10]          
Investment, Identifier [Axis]: Amalfi Midco, Warrants                      
Schedule of Investments [Line Items]                      
Fair Value   1,084 [3],[8],[13]   1,084 [3],[8],[13]   919 [6],[10],[14]          
Cost   4 [3],[8],[13]   4 [3],[8],[13]   4 [6],[10],[14]          
Investment, Identifier [Axis]: Americo Chemical Products, LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   115 [3],[13]   115 [3],[13]   119 [6],[14]          
Cost   88 [3],[13]   88 [3],[13]   88 [6],[14]          
Investment, Identifier [Axis]: Americo Chemical Products, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,544 [1],[2],[3]   2,544 [1],[2],[3]   2,611 [5],[6],[20]          
Cost   2,534 [1],[2],[3]   2,534 [1],[2],[3]   2,604 [5],[6],[20]          
Investment, Identifier [Axis]: Americo Chemical Products, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (6) [1],[2],[3],[11]   (6) [1],[2],[3],[11]   (7) [5],[6],[12],[20]          
Cost   (8) [1],[2],[3],[11]   (8) [1],[2],[3],[11]   (9) [5],[6],[12],[20]          
Investment, Identifier [Axis]: AnalytiChem Holding GmbH, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   3,412 [2],[3],[8],[17]   3,412 [2],[3],[8],[17]   2,995 [5],[6],[10],[18]          
Cost   3,197 [2],[3],[8],[17]   3,197 [2],[3],[8],[17]   3,192 [5],[6],[10],[18]          
Investment, Identifier [Axis]: AnalytiChem Holding GmbH, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   2,821 [2],[3],[8],[26]   2,821 [2],[3],[8],[26]   1,576 [5],[6],[10],[25]          
Cost   2,544 [2],[3],[8],[26]   2,544 [2],[3],[8],[26]   1,592 [5],[6],[10],[25]          
Investment, Identifier [Axis]: AnalytiChem Holding GmbH, First Lien Senior Secured Term Loan 3                      
Schedule of Investments [Line Items]                      
Fair Value   1,013 [2],[3],[8],[21]   1,013 [2],[3],[8],[21]   904 [5],[6],[10],[25]          
Cost   1,019 [2],[3],[8],[21]   1,019 [2],[3],[8],[21]   947 [5],[6],[10],[25]          
Investment, Identifier [Axis]: AnalytiChem Holding GmbH, First Lien Senior Secured Term Loan 4                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[6],[10]           1,008          
Cost [4],[5],[6],[10]           1,019          
Investment, Identifier [Axis]: Apex Bidco Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,400 [2],[3],[8],[27]   3,400 [2],[3],[8],[27]   3,180 [5],[6],[10],[28]          
Cost   3,217 [2],[3],[8],[27]   3,217 [2],[3],[8],[27]   3,206 [5],[6],[10],[28]          
Investment, Identifier [Axis]: Apex Bidco Limited, Subordinated Senior Unsecured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   341 [3],[8]   341 [3],[8]   297 [6],[10]          
Cost   347 [3],[8]   347 [3],[8]   333 [6],[10]          
Investment, Identifier [Axis]: Apidos CLO XXIV, Series 2016-24A, Subordinated Structured Notes                      
Schedule of Investments [Line Items]                      
Fair Value   2,455 [8],[15]   2,455 [8],[15]   3,272 [10],[16]          
Cost   3,780 [8],[15]   3,780 [8],[15]   3,527 [10],[16]          
Investment, Identifier [Axis]: Application Boot Camp LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value [3],[13]   235   235              
Cost [3],[13]   235   235              
Investment, Identifier [Axis]: Application Boot Camp LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[21]   1,613   1,613              
Cost [2],[3],[21]   1,614   1,614              
Investment, Identifier [Axis]: Application Boot Camp LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[11],[21]   (5)   (5)              
Cost [2],[3],[11],[21]   (5)   (5)              
Investment, Identifier [Axis]: Application Boot Camp LLC, Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3]   82   82              
Cost [3]   82   82              
Investment, Identifier [Axis]: Aptus 1829. GmbH, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[8],[13]   0 [3],[8],[13]   0 [6],[10],[14]          
Cost   12 [3],[8],[13]   12 [3],[8],[13]   12 [6],[10],[14]          
Investment, Identifier [Axis]: Aptus 1829. GmbH, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [5],[6],[10],[25]           1,994          
Cost [5],[6],[10],[25]           2,484          
Investment, Identifier [Axis]: Aptus 1829. GmbH, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[8],[26]   2,333   2,333              
Cost [2],[3],[8],[26]   2,489   2,489              
Investment, Identifier [Axis]: Aptus 1829. GmbH, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[8],[17]   1,238   1,238              
Cost [2],[3],[8],[17]   1,252   1,252              
Investment, Identifier [Axis]: Aptus 1829. GmbH, Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value   69 [3],[8],[13]   69 [3],[8],[13]   40 [6],[10],[14]          
Cost   120 [3],[8],[13]   120 [3],[8],[13]   120 [6],[10],[14]          
Investment, Identifier [Axis]: Apus Bidco Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,948 [2],[3],[8],[29]   3,948 [2],[3],[8],[29]   3,608 [5],[6],[10],[30]          
Cost   3,921 [2],[3],[8],[29]   3,921 [2],[3],[8],[29]   3,913 [5],[6],[10],[30]          
Investment, Identifier [Axis]: Aquavista Watersides 2 LTD, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,908 [2],[3],[8],[29]   6,908 [2],[3],[8],[29]   6,314 [5],[6],[10],[12],[28]          
Cost   6,548 [2],[3],[8],[29]   6,548 [2],[3],[8],[29]   6,492 [5],[6],[10],[12],[28]          
Investment, Identifier [Axis]: Aquavista Watersides 2 LTD, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,496 [2],[3],[8],[29]   2,496 [2],[3],[8],[29]   2,119 [5],[6],[10],[28]          
Cost   2,365 [2],[3],[8],[29]   2,365 [2],[3],[8],[29]   2,187 [5],[6],[10],[28]          
Investment, Identifier [Axis]: Arc Education, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,339 [2],[3],[8],[11],[26]   4,339 [2],[3],[8],[11],[26]   3,807 [5],[6],[10],[12],[18]          
Cost   3,721 [2],[3],[8],[11],[26]   3,721 [2],[3],[8],[11],[26]   3,712 [5],[6],[10],[12],[18]          
Investment, Identifier [Axis]: Arch Global Precision LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   8,786 [2],[3],[21]   8,786 [2],[3],[21]   8,769 [4],[5],[6]          
Cost   8,919 [2],[3],[21]   8,919 [2],[3],[21]   8,966 [4],[5],[6]          
Investment, Identifier [Axis]: Archimede, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,503 [2],[3],[8],[17]   6,503 [2],[3],[8],[17]   5,676 [5],[6],[10],[18]          
Cost   6,510 [2],[3],[8],[17]   6,510 [2],[3],[8],[17]   6,498 [5],[6],[10],[18]          
Investment, Identifier [Axis]: Argus Bidco Limited, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[8],[13]   0 [3],[8],[13]   0 [6],[10],[14]          
Cost   1 [3],[8],[13]   1 [3],[8],[13]   1 [6],[10],[14]          
Investment, Identifier [Axis]: Argus Bidco Limited, Equity Loan Notes                      
Schedule of Investments [Line Items]                      
Fair Value   33 [3],[8]   33 [3],[8]   33 [6],[10]          
Cost   63 [3],[8]   63 [3],[8]   63 [6],[10]          
Investment, Identifier [Axis]: Argus Bidco Limited, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   2,036 [2],[3],[8],[26]   2,036 [2],[3],[8],[26]   1,773 [5],[6],[10],[18]          
Cost   1,909 [2],[3],[8],[26]   1,909 [2],[3],[8],[26]   1,875 [5],[6],[10],[18]          
Investment, Identifier [Axis]: Argus Bidco Limited, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   129 [2],[3],[8],[22]   129 [2],[3],[8],[22]   127 [4],[5],[6],[10]          
Cost   136 [2],[3],[8],[22]   136 [2],[3],[8],[22]   133 [4],[5],[6],[10]          
Investment, Identifier [Axis]: Argus Bidco Limited, First Lien Senior Secured Term Loan 3                      
Schedule of Investments [Line Items]                      
Fair Value   1,752 [2],[3],[8],[11],[29]   1,752 [2],[3],[8],[11],[29]   1,584 [5],[6],[10],[12],[28]          
Cost   1,628 [2],[3],[8],[11],[29]   1,628 [2],[3],[8],[11],[29]   1,596 [5],[6],[10],[12],[28]          
Investment, Identifier [Axis]: Argus Bidco Limited, Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value   33 [3],[8]   33 [3],[8]   33 [6],[10]          
Cost   63 [3],[8]   63 [3],[8]   63 [6],[10]          
Investment, Identifier [Axis]: Argus Bidco Limited, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   889 [3],[8]   889 [3],[8]   777 [6],[10]          
Cost   863 [3],[8]   863 [3],[8]   811 [6],[10]          
Investment, Identifier [Axis]: Armstrong Transport Group (Pele Buyer, LLC), First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,780 [2],[3],[22]   5,780 [2],[3],[22]   5,637 [4],[5],[6]          
Cost   5,940 [2],[3],[22]   5,940 [2],[3],[22]   5,935 [4],[5],[6]          
Investment, Identifier [Axis]: Artemis Bidco Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   468 [2],[3],[8],[11],[17]   468 [2],[3],[8],[11],[17]   256 [5],[6],[10],[12],[18]          
Cost   428 [2],[3],[8],[11],[17]   428 [2],[3],[8],[11],[17]   261 [5],[6],[10],[12],[18]          
Investment, Identifier [Axis]: Astra Bidco Limited, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   449 [2],[3],[8],[17]   449 [2],[3],[8],[17]   396 [5],[6],[10],[18]          
Cost   408 [2],[3],[8],[17]   408 [2],[3],[8],[17]   408 [5],[6],[10],[18]          
Investment, Identifier [Axis]: Astra Bidco Limited, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   2,653 [2],[3],[8],[29]   2,653 [2],[3],[8],[29]   2,365 [5],[6],[10],[12],[30]          
Cost   2,523 [2],[3],[8],[29]   2,523 [2],[3],[8],[29]   2,451 [5],[6],[10],[12],[30]          
Investment, Identifier [Axis]: Auxi International, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   1,550 [2],[3],[8],[17]   1,550 [2],[3],[8],[17]   1,351 [5],[6],[10],[25]          
Cost   1,542 [2],[3],[8],[17]   1,542 [2],[3],[8],[17]   1,538 [5],[6],[10],[25]          
Investment, Identifier [Axis]: Auxi International, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   866 [2],[3],[8],[29]   866 [2],[3],[8],[29]   782 [5],[6],[10],[30]          
Cost   911 [2],[3],[8],[29]   911 [2],[3],[8],[29]   909 [5],[6],[10],[30]          
Investment, Identifier [Axis]: Avance Clinical Bidco Pty Ltd, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,581 [2],[3],[8],[11],[31]   1,581 [2],[3],[8],[11],[31]   1,967 [5],[6],[10],[12],[32]          
Cost   1,675 [2],[3],[8],[11],[31]   1,675 [2],[3],[8],[11],[31]   2,204 [5],[6],[10],[12],[32]          
Investment, Identifier [Axis]: Azalea Buyer, Inc., Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   310 [3],[13]   310 [3],[13]   288 [6],[14]          
Cost   192 [3],[13]   192 [3],[13]   192 [6],[14]          
Investment, Identifier [Axis]: Azalea Buyer, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,761 [1],[2],[3]   4,761 [1],[2],[3]   4,785 [5],[6],[12],[20]          
Cost   4,722 [1],[2],[3]   4,722 [1],[2],[3]   4,731 [5],[6],[12],[20]          
Investment, Identifier [Axis]: Azalea Buyer, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [1],[2],[3],[11]   0 [1],[2],[3],[11]   0 [5],[6],[12],[20]          
Cost   (4) [1],[2],[3],[11]   (4) [1],[2],[3],[11]   (5) [5],[6],[12],[20]          
Investment, Identifier [Axis]: Azalea Buyer, Inc., Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,924 [3]   1,924 [3]   1,805 [6]          
Cost   1,910 [3]   1,910 [3]   1,799 [6]          
Investment, Identifier [Axis]: BKF Buyer, Inc., Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   1,095 [3],[13]   1,095 [3],[13]   1,045 [6],[14]          
Cost   1,004 [3],[13]   1,004 [3],[13]   1,004 [6],[14]          
Investment, Identifier [Axis]: BKF Buyer, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   8,001 [1],[2],[3]   8,001 [1],[2],[3]   8,015 [5],[6],[20]          
Cost   7,998 [1],[2],[3]   7,998 [1],[2],[3]   8,013 [5],[6],[20]          
Investment, Identifier [Axis]: BKF Buyer, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (42) [1],[2],[3],[11]   (42) [1],[2],[3],[11]   (52) [5],[6],[12],[20]          
Cost   (42) [1],[2],[3],[11]   (42) [1],[2],[3],[11]   (52) [5],[6],[12],[20]          
Investment, Identifier [Axis]: BNI Global, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   10,567 [2],[3],[33]   10,567 [2],[3],[33]   9,302 [5],[6],[34]          
Cost   9,683 [2],[3],[33]   9,683 [2],[3],[33]   9,694 [5],[6],[34]          
Investment, Identifier [Axis]: BPG Holdings IV Corp, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   12,285 [2],[3],[21]   12,285 [2],[3],[21]   12,560 [4],[5],[6]          
Cost   13,430 [2],[3],[21]   13,430 [2],[3],[21]   13,442 [4],[5],[6]          
Investment, Identifier [Axis]: BVI Medical, Inc., Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [5],[6],[18]           9,482          
Cost [5],[6],[18]           9,614          
Investment, Identifier [Axis]: Bariacum S.A, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,381 [2],[3],[8],[26]   3,381 [2],[3],[8],[26]   3,107 [5],[6],[10],[25]          
Cost   3,267 [2],[3],[8],[26]   3,267 [2],[3],[8],[26]   3,260 [5],[6],[10],[25]          
Investment, Identifier [Axis]: Basin Innovation Group, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   13,924 [2],[3],[11],[22]   13,924 [2],[3],[11],[22]   13,949 [5],[6],[12],[20]          
Cost   13,901 [2],[3],[11],[22]   13,901 [2],[3],[11],[22]   13,952 [5],[6],[12],[20]          
Investment, Identifier [Axis]: Basin Innovation Group, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (23) [2],[3],[11],[22]   (23) [2],[3],[11],[22]   (28) [5],[6],[12],[20]          
Cost   (25) [2],[3],[11],[22]   (25) [2],[3],[11],[22]   (28) [5],[6],[12],[20]          
Investment, Identifier [Axis]: Benify (Bennevis AB), First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [5],[6],[10],[35]           854          
Cost [5],[6],[10],[35]           996          
Investment, Identifier [Axis]: Beyond Risk Management, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,295 [2],[3],[11],[21]   5,295 [2],[3],[11],[21]   5,322 [4],[5],[6],[12]          
Cost   5,243 [2],[3],[11],[21]   5,243 [2],[3],[11],[21]   5,242 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Bidwax, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   8,118 [2],[3],[8],[26]   8,118 [2],[3],[8],[26]   7,088 [5],[6],[10],[25]          
Cost   8,164 [2],[3],[8],[26]   8,164 [2],[3],[8],[26]   8,148 [5],[6],[10],[25]          
Investment, Identifier [Axis]: Biolam Group, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value [3],[8],[13]   0   0              
Cost [3],[8],[13]   0   0              
Investment, Identifier [Axis]: Biolam Group, Convertible Bonds                      
Schedule of Investments [Line Items]                      
Fair Value [3],[8],[13]   0   0              
Cost [3],[8],[13]   0   0              
Investment, Identifier [Axis]: Biolam Group, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,437 [2],[3],[8],[11],[24],[26]   1,437 [2],[3],[8],[11],[24],[26]   1,406 [5],[6],[10],[12],[25],[36]          
Cost   2,486 [2],[3],[8],[11],[24],[26]   2,486 [2],[3],[8],[11],[24],[26]   2,517 [5],[6],[10],[12],[25],[36]          
Investment, Identifier [Axis]: Biolam Group, Ordinary Shares                      
Schedule of Investments [Line Items]                      
Fair Value [3],[8],[13]   0   0              
Cost [3],[8],[13]   0   0              
Investment, Identifier [Axis]: Biolam Group, Preferred Stock A                      
Schedule of Investments [Line Items]                      
Fair Value [3],[8],[13]   0   0              
Cost [3],[8],[13]   0   0              
Investment, Identifier [Axis]: Biolam Group, Preferred Stock A2                      
Schedule of Investments [Line Items]                      
Fair Value [3],[8],[13]   0   0              
Cost [3],[8],[13]   0   0              
Investment, Identifier [Axis]: Biolam Group, Preferred Stock B                      
Schedule of Investments [Line Items]                      
Fair Value [3],[8],[13]   0   0              
Cost [3],[8],[13]   0   0              
Investment, Identifier [Axis]: Biolam Group, Preferred Stock C                      
Schedule of Investments [Line Items]                      
Fair Value [3],[8],[13]   0   0              
Cost [3],[8],[13]   0   0              
Investment, Identifier [Axis]: Biolam Group, Preferred Stock O1                      
Schedule of Investments [Line Items]                      
Fair Value [3],[8],[13]   0   0              
Cost [3],[8],[13]   0   0              
Investment, Identifier [Axis]: Biolam Group, Preferred Stock O2                      
Schedule of Investments [Line Items]                      
Fair Value [3],[8],[13]   0   0              
Cost [3],[8],[13]   0   0              
Investment, Identifier [Axis]: Biolam Group, Warrants                      
Schedule of Investments [Line Items]                      
Fair Value [3],[8],[13]   0   0              
Cost [3],[8],[13]   0   0              
Investment, Identifier [Axis]: Biolam, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   0   0   0          
Investment, Identifier [Axis]: Biolam, Convertible Bonds                      
Schedule of Investments [Line Items]                      
Fair Value   0   0   0          
Investment, Identifier [Axis]: Biolam, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [37]   1,437   1,437   0          
Investment, Identifier [Axis]: Biolam, Ordinary Shares                      
Schedule of Investments [Line Items]                      
Fair Value   0   0   0          
Investment, Identifier [Axis]: Biolam, Preferred Stock A                      
Schedule of Investments [Line Items]                      
Fair Value   0   0   0          
Investment, Identifier [Axis]: Biolam, Preferred Stock A2                      
Schedule of Investments [Line Items]                      
Fair Value   0   0   0          
Investment, Identifier [Axis]: Biolam, Preferred Stock B                      
Schedule of Investments [Line Items]                      
Fair Value   0   0   0          
Investment, Identifier [Axis]: Biolam, Preferred Stock C                      
Schedule of Investments [Line Items]                      
Fair Value   0   0   0          
Investment, Identifier [Axis]: Biolam, Preferred Stock O1                      
Schedule of Investments [Line Items]                      
Fair Value   0   0   0          
Investment, Identifier [Axis]: Biolam, Preferred Stock O2                      
Schedule of Investments [Line Items]                      
Fair Value   0   0   0          
Investment, Identifier [Axis]: Biolam, Warrants                      
Schedule of Investments [Line Items]                      
Fair Value   0   0   0          
Investment, Identifier [Axis]: Black Angus Steakhouses, LLC, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   0 [38],[39]   0 [38],[39]   0 [6],[16],[36],[38],[39] $ 4,869 [40],[41]        
Cost [6],[16],[36]           9,628          
Investment, Identifier [Axis]: Black Angus Steakhouses, LLC, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   0 [38],[39]   0 [38],[39]   2,744 [5],[6],[16],[20],[36],[38],[39] 7,166 [40],[41]        
Cost [5],[6],[16],[20],[36]           8,091          
Investment, Identifier [Axis]: Black Angus Steakhouses, LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value [6],[14],[16]           0          
Cost [6],[14],[16]           0          
Investment, Identifier [Axis]: Black Angus Steakhouses, LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   0 [39]   0 [39]   0 [39] 0 [41]        
Investment, Identifier [Axis]: Bounteous, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,056 [1],[2],[3]   4,056 [1],[2],[3]   4,081 [4],[5],[6]          
Cost   4,054 [1],[2],[3]   4,054 [1],[2],[3]   4,067 [4],[5],[6]          
Investment, Identifier [Axis]: Bridger Aerospace Group Holdings, LLC, Municipal Revenue Bond                      
Schedule of Investments [Line Items]                      
Fair Value   28,013   28,013   27,859          
Cost   27,200   27,200   27,200          
Investment, Identifier [Axis]: Bridger Aerospace Group Holdings, LLC, Preferred Stock- Series C                      
Schedule of Investments [Line Items]                      
Fair Value   14,982 [3]   14,982 [3]   14,618 [6]          
Cost   17,335 [3]   17,335 [3]   16,725 [6]          
Investment, Identifier [Axis]: BrightSign LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,998 [1],[2],[3]   4,998 [1],[2],[3]   4,657 [5],[6],[20]          
Cost   5,027 [1],[2],[3]   5,027 [1],[2],[3]   4,635 [5],[6],[20]          
Investment, Identifier [Axis]: BrightSign LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value [3],[13]   1,207   1,207              
Cost [3],[13]   1,107   1,107              
Investment, Identifier [Axis]: BrightSign LLC, LLC units                      
Schedule of Investments [Line Items]                      
Fair Value [6]           1,174          
Cost [6]           1,107          
Investment, Identifier [Axis]: BrightSign LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   806 [1],[2],[3],[11]   806 [1],[2],[3],[11]   1,085 [5],[6],[12],[20]          
Cost   814 [1],[2],[3],[11]   814 [1],[2],[3],[11]   1,079 [5],[6],[12],[20]          
Investment, Identifier [Axis]: Brightpay Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,424 [2],[3],[8],[17]   2,424 [2],[3],[8],[17]   386 [5],[6],[10],[12],[18]          
Cost   2,338 [2],[3],[8],[17]   2,338 [2],[3],[8],[17]   388 [5],[6],[10],[12],[18]          
Investment, Identifier [Axis]: Brightpay Limited, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [5],[6],[10],[25]           1,720          
Cost [5],[6],[10],[25]           1,931          
Investment, Identifier [Axis]: British Airways 2020-1 Class B Pass Through Trust, First Lien Senior Secured Bond                      
Schedule of Investments [Line Items]                      
Fair Value   456   456   507          
Cost   435   435   489          
Investment, Identifier [Axis]: British Engineering Services Holdco Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   15,321 [2],[3],[8],[29]   15,321 [2],[3],[8],[29]   14,454 [5],[6],[10],[30]          
Cost   15,801 [2],[3],[8],[29]   15,801 [2],[3],[8],[29]   15,527 [5],[6],[10],[30]          
Investment, Identifier [Axis]: Broadstone Group UK LTD, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[8],[11],[29]   3,325   3,325              
Cost [2],[3],[8],[11],[29]   3,078   3,078              
Investment, Identifier [Axis]: Brook & Whittle Holding Corp., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,957 [2],[15],[22]   1,957 [2],[15],[22]   2,461 [4],[5],[16]          
Cost   2,732 [2],[15],[22]   2,732 [2],[15],[22]   2,751 [4],[5],[16]          
Investment, Identifier [Axis]: Brown Machine Group Holdings, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,619 [2],[3],[21]   5,619 [2],[3],[21]   5,716 [5],[6],[20]          
Cost   6,084 [2],[3],[21]   6,084 [2],[3],[21]   6,078 [5],[6],[20]          
Investment, Identifier [Axis]: Burgess Point Purchaser Corporation, LP Units                      
Schedule of Investments [Line Items]                      
Fair Value   439 [3],[13]   439 [3],[13]   450 [6],[14]          
Cost   455 [3],[13]   455 [3],[13]   455 [6],[14]          
Investment, Identifier [Axis]: Burgess Point Purchaser Corporation, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,241 [2],[3],[21]   4,241 [2],[3],[21]   4,364 [5],[6],[23]          
Cost   4,428 [2],[3],[21]   4,428 [2],[3],[21]   4,405 [5],[6],[23]          
Investment, Identifier [Axis]: CAi Software, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   12,466 [2],[3],[21]   12,466 [2],[3],[21]   12,455 [4],[5],[6]          
Cost   12,306 [2],[3],[21]   12,306 [2],[3],[21]   12,349 [4],[5],[6]          
Investment, Identifier [Axis]: CAi Software, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   1,261 [2],[3],[11],[21]   1,261 [2],[3],[11],[21]   1,246 [4],[5],[6],[12]          
Cost   1,229 [2],[3],[11],[21]   1,229 [2],[3],[11],[21]   1,225 [4],[5],[6],[12]          
Investment, Identifier [Axis]: CCFF Buyer, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,819 [2],[3],[11],[22]   5,819 [2],[3],[11],[22]   5,809 [4],[5],[6],[12]          
Cost   5,786 [2],[3],[11],[22]   5,786 [2],[3],[11],[22]   5,788 [4],[5],[6],[12]          
Investment, Identifier [Axis]: CCFF Buyer, LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   239 [3]   239 [3]   235 [6]          
Cost   233 [3]   233 [3]   233 [6]          
Investment, Identifier [Axis]: CCFF Buyer, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (12) [2],[3],[11],[22]   (12) [2],[3],[11],[22]   (15) [4],[5],[6],[12]          
Cost   (16) [2],[3],[11],[22]   (16) [2],[3],[11],[22]   (18) [4],[5],[6],[12]          
Investment, Identifier [Axis]: CGI Parent, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   13,933 [2],[3],[21]   13,933 [2],[3],[21]   14,008 [4],[5],[6]          
Cost   13,738 [2],[3],[21]   13,738 [2],[3],[21]   13,780 [4],[5],[6]          
Investment, Identifier [Axis]: CGI Parent, LLC, Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value   1,893 [3],[13]   1,893 [3],[13]   1,710 [6],[14]          
Cost   722 [3],[13]   722 [3],[13]   722 [6],[14]          
Investment, Identifier [Axis]: CGI Parent, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [2],[3],[11],[21]   0 [2],[3],[11],[21]   0 [4],[5],[6],[12]          
Cost   (15) [2],[3],[11],[21]   (15) [2],[3],[11],[21]   (18) [4],[5],[6],[12]          
Investment, Identifier [Axis]: CH Buyer, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [1],[2],[3]   861   861              
Cost [1],[2],[3]   862   862              
Investment, Identifier [Axis]: CH Buyer, LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value [3],[13]   69   69              
Cost [3],[13]   69   69              
Investment, Identifier [Axis]: CH Buyer, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [1],[2],[3],[11]   (1)   (1)              
Cost [1],[2],[3],[11]   (1)   (1)              
Investment, Identifier [Axis]: CM Acquisitions Holdings Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[6]           12,140          
Cost [4],[5],[6]           12,462          
Investment, Identifier [Axis]: CM Acquisitions Holdings Inc., First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   10,097 [2],[3],[22]   10,097 [2],[3],[22]   1,523 [4],[5],[6]          
Cost   10,271 [2],[3],[22]   10,271 [2],[3],[22]   1,563 [4],[5],[6]          
Investment, Identifier [Axis]: CM Acquisitions Holdings Inc., First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[21]   3,760   3,760              
Cost [2],[3],[21]   3,823   3,823              
Investment, Identifier [Axis]: CMT Opco Holding, LLC (Concept Machine), First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,095 [2],[3],[21]   4,095 [2],[3],[21]   3,381 [4],[5],[6]          
Cost   4,739 [2],[3],[21]   4,739 [2],[3],[21]   4,746 [4],[5],[6]          
Investment, Identifier [Axis]: CMT Opco Holding, LLC (Concept Machine), LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[13]   0 [3],[13]   0 [6],[14]          
Cost   506 [3],[13]   506 [3],[13]   506 [6],[14]          
Investment, Identifier [Axis]: CSL DualCom, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,367 [2],[3],[8],[42]   2,367 [2],[3],[8],[42]   2,016 [5],[6],[10],[12],[43]          
Cost   2,079 [2],[3],[8],[42]   2,079 [2],[3],[8],[42]   1,922 [5],[6],[10],[12],[43]          
Investment, Identifier [Axis]: CTI Foods Holdings Co., LLC, 2024 LIFO Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,527 [2],[3],[21]   4,527 [2],[3],[21]   4,211 [4],[5],[6]          
Cost   4,411 [2],[3],[21]   4,411 [2],[3],[21]   4,067 [4],[5],[6]          
Investment, Identifier [Axis]: CTI Foods Holdings Co., LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   934 [3],[13]   934 [3],[13]   695 [6],[14]          
Cost   0 [3],[13]   0 [3],[13]   0 [6],[14]          
Investment, Identifier [Axis]: CTI Foods Holdings Co., LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[21]   11,376   11,376              
Cost [2],[3],[21]   11,159   11,159              
Investment, Identifier [Axis]: CTI Foods Holdings Co., LLC, First Out Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[6]           2,860          
Cost [4],[5],[6]           2,797          
Investment, Identifier [Axis]: CTI Foods Holdings Co., LLC, First Out Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[21]   832   832              
Cost [2],[3],[21]   832   832              
Investment, Identifier [Axis]: CTI Foods Holdings Co., LLC, First Out Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[21]   2,232   2,232              
Cost [2],[3],[21]   2,190   2,190              
Investment, Identifier [Axis]: CTI Foods Holdings Co., LLC, Second Out Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   639 [2],[3],[21]   639 [2],[3],[21]   597 [4],[5],[6]          
Cost   639 [2],[3],[21]   639 [2],[3],[21]   597 [4],[5],[6]          
Investment, Identifier [Axis]: CW Group Holdings, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,073 [2],[3],[11],[21]   5,073 [2],[3],[11],[21]   2,732 [4],[5],[6]          
Cost   5,085 [2],[3],[11],[21]   5,085 [2],[3],[11],[21]   2,708 [4],[5],[6]          
Investment, Identifier [Axis]: CW Group Holdings, LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   460 [3]   460 [3]   371 [6]          
Cost   161 [3]   161 [3]   161 [6]          
Investment, Identifier [Axis]: Caldwell & Gregory LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   13,212 [2],[3],[11],[21]   13,212 [2],[3],[11],[21]   18,833 [4],[5],[6],[12]          
Cost   13,184 [2],[3],[11],[21]   13,184 [2],[3],[11],[21]   18,817 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Caldwell & Gregory LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (28) [2],[3],[11],[21]   (28) [2],[3],[11],[21]   (34) [4],[5],[6],[12]          
Cost   (33) [2],[3],[11],[21]   (33) [2],[3],[11],[21]   (36) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Canadian Orthodontic Partners Corp., Class A Equity                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[8],[13]   0 [3],[8],[13]   0 [6],[10],[14]          
Cost   389 [3],[8],[13]   389 [3],[8],[13]   389 [6],[10],[14]          
Investment, Identifier [Axis]: Canadian Orthodontic Partners Corp., Class C - Warrants                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[8],[13]   0 [3],[8],[13]   0 [6],[10],[14]          
Cost   0 [3],[8],[13]   0 [3],[8],[13]   0 [6],[10],[14]          
Investment, Identifier [Axis]: Canadian Orthodontic Partners Corp., Class X Equity                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[8],[13]   0 [3],[8],[13]   0 [6],[10],[14]          
Cost   35 [3],[8],[13]   35 [3],[8],[13]   35 [6],[10],[14]          
Investment, Identifier [Axis]: Canadian Orthodontic Partners Corp., Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[8],[13]   0 [3],[8],[13]   0 [6],[10],[14]          
Cost   0 [3],[8],[13]   0 [3],[8],[13]   0 [6],[10],[14]          
Investment, Identifier [Axis]: Canadian Orthodontic Partners Corp., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   242 [2],[3],[8],[24],[44]   242 [2],[3],[8],[24],[44]   360 [5],[6],[10],[36],[45]          
Cost   1,860 [2],[3],[8],[24],[44]   1,860 [2],[3],[8],[24],[44]   1,860 [5],[6],[10],[36],[45]          
Investment, Identifier [Axis]: Canadian Orthodontic Partners Corp., Super Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   253 [3],[8],[11]   253 [3],[8],[11]   185 [6],[10],[12]          
Cost   83 [3],[8],[11]   83 [3],[8],[11]   64 [6],[10],[12]          
Investment, Identifier [Axis]: Caribou Holding Company, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[6],[10]           4,236          
Cost [4],[5],[6],[10]           4,285          
Investment, Identifier [Axis]: Caribou Holding Company, LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value [6],[10],[14]           682          
Cost [6],[10],[14]           682          
Investment, Identifier [Axis]: Cascade Residential Services LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,405 [2],[3],[11],[21]   4,405 [2],[3],[11],[21]   3,742 [4],[5],[6],[12]          
Cost   4,437 [2],[3],[11],[21]   4,437 [2],[3],[11],[21]   3,918 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Cascade Residential Services LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   306 [2],[3],[11],[21]   306 [2],[3],[11],[21]   312 [4],[5],[6]          
Cost   308 [2],[3],[11],[21]   308 [2],[3],[11],[21]   324 [4],[5],[6]          
Investment, Identifier [Axis]: Catawba River Limited, Structured - Junior Note                      
Schedule of Investments [Line Items]                      
Fair Value   2,207 [3],[8],[13]   2,207 [3],[8],[13]   2,365 [6],[10]          
Cost   4,230 [3],[8],[13]   4,230 [3],[8],[13]   4,442 [6],[10]          
Investment, Identifier [Axis]: Celebration Bidco, LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   7,446 [3],[13]   7,446 [3],[13]   11,262 [6],[14]          
Cost   12,177 [3],[13]   12,177 [3],[13]   12,177 [6],[14]          
Investment, Identifier [Axis]: Celebration Bidco, LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   7,446   7,446   11,262 [46] 12,177 [46]        
Investment, Identifier [Axis]: Celebration Bidco, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   7,824 [3],[21]   7,824 [3],[21]   6,414 [4],[6]          
Cost   8,164 [3],[21]   8,164 [3],[21]   6,414 [4],[6]          
Investment, Identifier [Axis]: Celebration Bidco, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   7,824   7,824   6,414 [46] 6,214 [46]        
Investment, Identifier [Axis]: Centralis Finco S.a.r.l., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [5],[6],[10],[18]           2,996          
Cost [5],[6],[10],[18]           2,942          
Investment, Identifier [Axis]: Centralis Finco S.a.r.l., First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[8],[17]   3,396   3,396              
Cost [2],[3],[8],[17]   2,951   2,951              
Investment, Identifier [Axis]: Centralis Finco S.a.r.l., First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[8],[17]   1,821   1,821              
Cost [2],[3],[8],[17]   1,687   1,687              
Investment, Identifier [Axis]: Ceres Pharma NV, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [5],[6],[10],[25]           3,167          
Cost [5],[6],[10],[25]           3,292          
Investment, Identifier [Axis]: Ceres Pharma NV, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[8],[26]   3,565   3,565              
Cost [2],[3],[8],[26]   3,299   3,299              
Investment, Identifier [Axis]: Ceres Pharma NV, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[8],[11],[17]   160   160              
Cost [2],[3],[8],[11],[17]   143   143              
Investment, Identifier [Axis]: Coastal Marina Holdings, LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   19,807 [3],[13]   19,807 [3],[13]   16,852 [6],[14],[46] 12,160 [46]        
Cost   16,495 [3],[13]   16,495 [3],[13]   16,495 [6],[14]          
Investment, Identifier [Axis]: Coastal Marina Holdings, LLC, Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3]   23,131   23,131              
Cost [3]   23,080   23,080              
Investment, Identifier [Axis]: Coastal Marina Holdings, LLC, Subordinated Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   15,832   15,832   15,770 [6],[46] 15,649 [46]        
Cost [6]           15,690          
Investment, Identifier [Axis]: Coastal Marina Holdings, LLC, Subordinated Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   7,299   7,299   7,271 [6],[46] 6,868 [46]        
Cost [6]           7,322          
Investment, Identifier [Axis]: Cobham Slip Rings SAS, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,272 [2],[3],[8],[21]   1,272 [2],[3],[8],[21]   1,303 [5],[6],[10],[23]          
Cost   1,289 [2],[3],[8],[21]   1,289 [2],[3],[8],[21]   1,286 [5],[6],[10],[23]          
Investment, Identifier [Axis]: Coherus Biosciences, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,907 [2],[3],[21]   3,907 [2],[3],[21]   3,903 [4],[5],[6]          
Cost   3,892 [2],[3],[21]   3,892 [2],[3],[21]   3,883 [4],[5],[6]          
Investment, Identifier [Axis]: Coherus Biosciences, Inc., Royalty Rights                      
Schedule of Investments [Line Items]                      
Fair Value   1,542 [3]   1,542 [3]   5,834 [6]          
Cost   1,341 [3]   1,341 [3]   3,627 [6]          
Investment, Identifier [Axis]: Command Alkon (Project Potter Buyer, LLC), Class B Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   152 [3],[13]   152 [3],[13]   175 [6],[14]          
Cost   0 [3],[13]   0 [3],[13]   0 [6],[14]          
Investment, Identifier [Axis]: Compass Precision, LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   299 [3],[13]   299 [3],[13]   299 [6],[14]          
Cost   125 [3],[13]   125 [3],[13]   125 [6],[14]          
Investment, Identifier [Axis]: Compass Precision, LLC, Senior Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   650 [3]   650 [3]   640 [6]          
Cost   647 [3]   647 [3]   642 [6]          
Investment, Identifier [Axis]: Comply365, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   10,600 [2],[3],[21]   10,600 [2],[3],[21]   18,663 [5],[6],[20]          
Cost   10,707 [2],[3],[21]   10,707 [2],[3],[21]   18,409 [5],[6],[20]          
Investment, Identifier [Axis]: Comply365, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (24) [2],[3],[11],[21]   (24) [2],[3],[11],[21]   0 [5],[6],[12],[20]          
Cost   (13) [2],[3],[11],[21]   (13) [2],[3],[11],[21]   (14) [5],[6],[12],[20]          
Investment, Identifier [Axis]: Contabo Finco S.À.R.L, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [5],[6],[10],[18]           4,822          
Cost [5],[6],[10],[18]           4,555          
Investment, Identifier [Axis]: Contabo FincoS.À R.L, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[8],[17]   5,466   5,466              
Cost [2],[3],[8],[17]   4,564   4,564              
Investment, Identifier [Axis]: Coyo Uprising GmbH, Class A Units                      
Schedule of Investments [Line Items]                      
Fair Value   239 [3],[8],[13]   239 [3],[8],[13]   206 [6],[10],[14]          
Cost   205 [3],[8],[13]   205 [3],[8],[13]   205 [6],[10],[14]          
Investment, Identifier [Axis]: Coyo Uprising GmbH, Class B Units                      
Schedule of Investments [Line Items]                      
Fair Value   446 [3],[8],[13]   446 [3],[8],[13]   381 [6],[10],[14]          
Cost   446 [3],[8],[13]   446 [3],[8],[13]   446 [6],[10],[14]          
Investment, Identifier [Axis]: Coyo Uprising GmbH, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,354 [2],[3],[8],[11],[26]   5,354 [2],[3],[8],[11],[26]   4,590 [5],[6],[10],[12],[18]          
Cost   5,322 [2],[3],[8],[11],[26]   5,322 [2],[3],[8],[11],[26]   5,194 [5],[6],[10],[12],[18]          
Investment, Identifier [Axis]: DAWGS Intermediate Holdings Co., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[21]   6,742   6,742              
Cost [2],[3],[21]   6,737   6,737              
Investment, Identifier [Axis]: DAWGS Intermediate Holdings Co., LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value [3],[13]   384   384              
Cost [3],[13]   347   347              
Investment, Identifier [Axis]: DAWGS Intermediate Holdings Co., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[11],[21]   238   238              
Cost [2],[3],[11],[21]   237   237              
Investment, Identifier [Axis]: DISA Holdings Corp., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,915 [2],[3],[21]   6,915 [2],[3],[21]   6,950 [4],[5],[6]          
Cost   6,791 [2],[3],[21]   6,791 [2],[3],[21]   6,808 [4],[5],[6]          
Investment, Identifier [Axis]: DISA Holdings Corp., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   86 [2],[3],[11],[21]   86 [2],[3],[11],[21]   0 [4],[5],[6],[12]          
Cost   78 [2],[3],[11],[21]   78 [2],[3],[11],[21]   (9) [4],[5],[6],[12]          
Investment, Identifier [Axis]: DataServ Integrations, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [5],[6],[23]           1,871          
Cost [5],[6],[23]           1,843          
Investment, Identifier [Axis]: DataServ Integrations, LLC, Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value [6],[14]           103          
Cost [6],[14]           96          
Investment, Identifier [Axis]: DataServ Integrations, LLC, Preferred Units                      
Schedule of Investments [Line Items]                      
Fair Value [3],[13]   200   200              
Cost [3],[13]   192   192              
Investment, Identifier [Axis]: DataServ Integrations, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [5],[6],[12],[23]           0          
Cost [5],[6],[12],[23]           (6)          
Investment, Identifier [Axis]: David Wood Baking UK Ltd, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   890 [2],[3],[8],[29]   890 [2],[3],[8],[29]   818 [5],[6],[10],[30]          
Cost   823 [2],[3],[8],[29]   823 [2],[3],[8],[29]   820 [5],[6],[10],[30]          
Investment, Identifier [Axis]: DecksDirect, LLC, Class A Units                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[13]   0 [3],[13]   0 [6],[14]          
Cost   47 [3],[13]   47 [3],[13]   47 [6],[14]          
Investment, Identifier [Axis]: DecksDirect, LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[13]   0 [3],[13]   0 [6],[14]          
Cost   55 [3],[13]   55 [3],[13]   55 [6],[14]          
Investment, Identifier [Axis]: DecksDirect, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,167 [2],[3],[21]   1,167 [2],[3],[21]   1,383 [4],[5],[6]          
Cost   1,516 [2],[3],[21]   1,516 [2],[3],[21]   1,552 [4],[5],[6]          
Investment, Identifier [Axis]: DecksDirect, LLC, Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value [3]   0   0              
Cost [3]   10   10              
Investment, Identifier [Axis]: DecksDirect, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (69) [2],[3],[11],[21]   (69) [2],[3],[11],[21]   301 [4],[5],[6],[12]          
Cost   18 [2],[3],[11],[21]   18 [2],[3],[11],[21]   343 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Discovery Buyer, L.P., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[11],[21]   12,293   12,293              
Cost [2],[3],[11],[21]   12,275   12,275              
Investment, Identifier [Axis]: Discovery Buyer, L.P., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[11],[21]   (20)   (20)              
Cost [2],[3],[11],[21]   (21)   (21)              
Investment, Identifier [Axis]: Diversified Packaging Holdings LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   366 [3]   366 [3]   333 [6],[14]          
Cost   277 [3]   277 [3]   277 [6],[14]          
Investment, Identifier [Axis]: Diversified Packaging Holdings LLC, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   798 [3]   798 [3]   717 [6]          
Cost   798 [3]   798 [3]   715 [6]          
Investment, Identifier [Axis]: Dragon Bidco, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [5],[6],[10],[18]           2,585          
Cost [5],[6],[10],[18]           2,838          
Investment, Identifier [Axis]: DreamStart Bidco SAS (d/b/a SmartTrade), First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [5],[6],[10],[18]           2,202          
Cost [5],[6],[10],[18]           2,333          
Investment, Identifier [Axis]: Dryden 49 Senior Loan Fund, Series 2017-49A, Subordinated Structured Notes                      
Schedule of Investments [Line Items]                      
Fair Value   218 [8],[13],[15]   218 [8],[13],[15]   437 [10],[14],[16]          
Cost   2,176 [8],[13],[15]   2,176 [8],[13],[15]   2,766 [10],[14],[16]          
Investment, Identifier [Axis]: Dune Group, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [5],[6],[10],[12],[18]           91          
Cost [5],[6],[10],[12],[18]           117          
Investment, Identifier [Axis]: Dune Group, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[6],[10]           193          
Cost [4],[5],[6],[10]           204          
Investment, Identifier [Axis]: Dune Group, First Lien Senior Secured Term Loan 3                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[6],[10]           1,164          
Cost [4],[5],[6],[10]           1,218          
Investment, Identifier [Axis]: Dunlipharder B.V., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,000 [2],[3],[8],[21]   1,000 [2],[3],[8],[21]   998 [4],[5],[6],[10]          
Cost   992 [2],[3],[8],[21]   992 [2],[3],[8],[21]   991 [4],[5],[6],[10]          
Investment, Identifier [Axis]: Dwyer Instruments, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   14,459 [2],[3],[21]   14,459 [2],[3],[21]   14,433 [4],[5],[6]          
Cost   14,340 [2],[3],[21]   14,340 [2],[3],[21]   14,426 [4],[5],[6]          
Investment, Identifier [Axis]: EB Development, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,005 [2],[3],[8],[11],[17]   2,005 [2],[3],[8],[11],[17]   1,971 [5],[6],[10],[12],[18]          
Cost   1,787 [2],[3],[8],[11],[17]   1,787 [2],[3],[8],[11],[17]   1,996 [5],[6],[10],[12],[18]          
Investment, Identifier [Axis]: EFC International, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   278 [3],[13]   278 [3],[13]   380 [6],[14]          
Cost   231 [3],[13]   231 [3],[13]   231 [6],[14]          
Investment, Identifier [Axis]: EFC International, Senior Unsecured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   811 [3]   811 [3]   797 [6]          
Cost   798 [3]   798 [3]   787 [6]          
Investment, Identifier [Axis]: EMI Porta Holdco LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   11,285 [2],[3],[21]   11,285 [2],[3],[21]   11,696 [4],[5],[6]          
Cost   11,983 [2],[3],[21]   11,983 [2],[3],[21]   12,268 [4],[5],[6]          
Investment, Identifier [Axis]: EMI Porta Holdco LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (80) [1],[2],[3],[11]   (80) [1],[2],[3],[11]   543 [4],[5],[6],[12]          
Cost   94 [1],[2],[3],[11]   94 [1],[2],[3],[11]   683 [4],[5],[6],[12]          
Investment, Identifier [Axis]: EZ SMBO Bidco, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [3],[8]   672   672              
Cost [3],[8]   626   626              
Investment, Identifier [Axis]: EZ SMBO Bidco, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[8],[44]   255   255              
Cost [2],[3],[8],[44]   245   245              
Investment, Identifier [Axis]: EZ SMBO Bidco, First Lien Senior Secured Term Loan 3                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[8],[17]   546   546              
Cost [2],[3],[8],[17]   509   509              
Investment, Identifier [Axis]: Echo Global Logistics, Inc., Partnership Equity                      
Schedule of Investments [Line Items]                      
Fair Value   276 [3],[13]   276 [3],[13]   417 [6],[14]          
Cost   531 [3],[13]   531 [3],[13]   531 [6],[14]          
Investment, Identifier [Axis]: Echo Global Logistics, Inc., Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   8,958 [1],[2],[3]   8,958 [1],[2],[3]   9,450 [5],[6],[20]          
Cost   9,376 [1],[2],[3]   9,376 [1],[2],[3]   9,366 [5],[6],[20]          
Investment, Identifier [Axis]: Eclipse Business Capital Holdings LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value                 $ 4,500    
Investment, Identifier [Axis]: Eclipse Business Capital Holdings LLC, Revolver, Funded                      
Schedule of Investments [Line Items]                      
Fair Value   9,800   9,800   10,100          
Investment, Identifier [Axis]: Eclipse Business Capital Holdings LLC, Revolver, Unfunded                      
Schedule of Investments [Line Items]                      
Fair Value               $ 22,700 13,600    
Investment, Identifier [Axis]: Eclipse Business Capital Holdings LLC, Second Lien Senior Secured Loan                      
Schedule of Investments [Line Items]                      
Fair Value                 $ 89,800    
Investment, Identifier [Axis]: Eclipse Business Capital, LLC units                      
Schedule of Investments [Line Items]                      
Fair Value   139,539   139,539   136,855 [46] 145,799 [46]        
Investment, Identifier [Axis]: Eclipse Business Capital, LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   139,539 [3]   139,539 [3]   136,855 [6]          
Cost   93,052 [3]   93,052 [3]   93,029 [6]          
Investment, Identifier [Axis]: Eclipse Business Capital, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   9,818 [1],[3],[11]   9,818 [1],[3],[11]   10,091 [6],[12],[20]          
Cost   9,752 [1],[3],[11]   9,752 [1],[3],[11]   10,022 [6],[12],[20]          
Investment, Identifier [Axis]: Eclipse Business Capital, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   9,818   9,818   10,091 [46] 5,545 [46]        
Investment, Identifier [Axis]: Eclipse Business Capital, LLC, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,545 [3]   4,545 [3]   4,545 [6]          
Cost   4,523 [3]   4,523 [3]   4,520 [6]          
Investment, Identifier [Axis]: Eclipse Business Capital, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,545   4,545   4,545 [46] 4,545 [46]        
Investment, Identifier [Axis]: Electric Equipment & Engineering Co., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   313 [3]   313 [3]   307 [6]          
Cost   312 [3]   312 [3]   307 [6]          
Investment, Identifier [Axis]: Electric Equipment & Engineering Co., LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   276 [3],[13]   276 [3],[13]   188 [6],[14]          
Cost   188 [3],[13]   188 [3],[13]   188 [6],[14]          
Investment, Identifier [Axis]: Electrical Components International, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   10,380 [2],[3],[11],[21]   10,380 [2],[3],[11],[21]   10,410 [5],[6],[12],[23]          
Cost   10,384 [2],[3],[11],[21]   10,384 [2],[3],[11],[21]   10,419 [5],[6],[12],[23]          
Investment, Identifier [Axis]: Ellkay, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[6]           4,348          
Cost [4],[5],[6]           4,875          
Investment, Identifier [Axis]: Entact Environmental Services, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,369 [2],[3],[21]   6,369 [2],[3],[21]   6,624 [4],[5],[6]          
Cost   6,400 [2],[3],[21]   6,400 [2],[3],[21]   6,671 [4],[5],[6]          
Investment, Identifier [Axis]: Eurofins Digital Testing International LUX Holding SARL, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   742 [2],[3],[8],[24],[26]   742 [2],[3],[8],[24],[26]   831 [5],[6],[10],[25],[36]          
Cost   1,561 [2],[3],[8],[24],[26]   1,561 [2],[3],[8],[24],[26]   1,497 [5],[6],[10],[25],[36]          
Investment, Identifier [Axis]: Eurofins Digital Testing International LUX Holding SARL, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   358 [2],[3],[8],[21],[24]   358 [2],[3],[8],[21],[24]   453 [4],[5],[6],[10],[36]          
Cost   833 [2],[3],[8],[21],[24]   833 [2],[3],[8],[21],[24]   781 [4],[5],[6],[10],[36]          
Investment, Identifier [Axis]: Eurofins Digital Testing International LUX Holding SARL, First Lien Senior Secured Term Loan 3                      
Schedule of Investments [Line Items]                      
Fair Value   1,148 [2],[3],[8],[24],[29]   1,148 [2],[3],[8],[24],[29]   1,165 [5],[6],[10],[30],[36]          
Cost   2,407 [2],[3],[8],[24],[29]   2,407 [2],[3],[8],[24],[29]   2,258 [5],[6],[10],[30],[36]          
Investment, Identifier [Axis]: Eurofins Digital Testing International LUX Holding SARL, Senior Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[8],[24]   0 [3],[8],[24]   0 [6],[10],[36]          
Cost   642 [3],[8],[24]   642 [3],[8],[24]   642 [6],[10],[36]          
Investment, Identifier [Axis]: Events Software BidCo Pty Ltd, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,416 [2],[3],[8],[11],[31]   1,416 [2],[3],[8],[11],[31]   1,336 [5],[6],[10],[12],[32]          
Cost   1,866 [2],[3],[8],[11],[31]   1,866 [2],[3],[8],[11],[31]   1,842 [5],[6],[10],[12],[32]          
Investment, Identifier [Axis]: Expert Institute Group Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[11],[21]   2,552   2,552              
Cost [2],[3],[11],[21]   2,549   2,549              
Investment, Identifier [Axis]: Expert Institute Group Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[11],[21]   (12)   (12)              
Cost [2],[3],[11],[21]   (13)   (13)              
Investment, Identifier [Axis]: Express Wash Acquisition Company, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,245 [2],[3],[21]   3,245 [2],[3],[21]   5,955 [4],[5],[6]          
Cost   3,246 [2],[3],[21]   3,246 [2],[3],[21]   6,313 [4],[5],[6]          
Investment, Identifier [Axis]: Express Wash Acquisition Company, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (2) [2],[3],[11],[21]   (2) [2],[3],[11],[21]   124 [4],[5],[6],[12]          
Cost   (2) [2],[3],[11],[21]   (2) [2],[3],[11],[21]   138 [4],[5],[6],[12]          
Investment, Identifier [Axis]: FL Hawk Intermediate Holdings, Inc. (f.k.a. Fineline Technologies, Inc.), First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   11,968 [2],[3],[21]   11,968 [2],[3],[21]   11,950 [4],[5],[6]          
Cost   11,938 [2],[3],[21]   11,938 [2],[3],[21]   11,995 [4],[5],[6]          
Investment, Identifier [Axis]: FSS Buyer LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   9,384 [2],[3],[21]   9,384 [2],[3],[21]   4,740 [5],[6],[20]          
Cost   9,384 [2],[3],[21]   9,384 [2],[3],[21]   4,690 [5],[6],[20]          
Investment, Identifier [Axis]: FSS Buyer LLC, LP Interest                      
Schedule of Investments [Line Items]                      
Fair Value   17 [3]   17 [3]   17 [6]          
Cost   12 [3]   12 [3]   12 [6]          
Investment, Identifier [Axis]: FSS Buyer LLC, LP Units                      
Schedule of Investments [Line Items]                      
Fair Value   74 [3],[13]   74 [3],[13]   74 [6],[14]          
Cost   51 [3],[13]   51 [3],[13]   51 [6],[14]          
Investment, Identifier [Axis]: Faraday, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,778 [2],[3],[8],[17]   1,778 [2],[3],[8],[17]   1,552 [5],[6],[10],[12],[18]          
Cost   1,628 [2],[3],[8],[17]   1,628 [2],[3],[8],[17]   1,600 [5],[6],[10],[12],[18]          
Investment, Identifier [Axis]: Featherstone Bidco Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[8],[27]   6,984   6,984              
Cost [2],[3],[8],[27]   6,893   6,893              
Investment, Identifier [Axis]: Ferrellgas L.P., Opco Preferred Units                      
Schedule of Investments [Line Items]                      
Fair Value   2,799 [3]   2,799 [3]   2,799 [6]          
Cost   2,799 [3]   2,799 [3]   2,799 [6]          
Investment, Identifier [Axis]: FinThrive Software Intermediate Holdings Inc., Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value   6,717 [3]   6,717 [3]   5,608 [6]          
Cost   10,383 [3]   10,383 [3]   9,830 [6]          
Investment, Identifier [Axis]: Finaxy Holding, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,347 [2],[3],[8],[26]   4,347 [2],[3],[8],[26]   3,872 [5],[6],[10],[25]          
Cost   3,940 [2],[3],[8],[26]   3,940 [2],[3],[8],[26]   3,935 [5],[6],[10],[25]          
Investment, Identifier [Axis]: Finexvet, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,998 [2],[3],[8],[26]   4,998 [2],[3],[8],[26]   4,613 [5],[6],[10],[25]          
Cost   4,882 [2],[3],[8],[26]   4,882 [2],[3],[8],[26]   4,872 [5],[6],[10],[25]          
Investment, Identifier [Axis]: FitzMark Buyer, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,994 [1],[2],[3]   3,994 [1],[2],[3]   4,128 [5],[6],[20]          
Cost   3,973 [1],[2],[3]   3,973 [1],[2],[3]   4,101 [5],[6],[20]          
Investment, Identifier [Axis]: Five Star Holding LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   756 [3],[13]   756 [3],[13]   564 [6],[14]          
Cost   967 [3],[13]   967 [3],[13]   967 [6],[14]          
Investment, Identifier [Axis]: Five Star Holding LLC, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   13,595 [2],[3],[21]   13,595 [2],[3],[21]   13,198 [4],[5],[6]          
Cost   13,506 [2],[3],[21]   13,506 [2],[3],[21]   13,489 [4],[5],[6]          
Investment, Identifier [Axis]: Flexential Issuer, LLC, Structured Secured Note - Class C                      
Schedule of Investments [Line Items]                      
Fair Value   10,805   10,805   15,339          
Cost   10,242   10,242   14,885          
Investment, Identifier [Axis]: Flywheel Holdings Segregated Portfolio 2025-2, LP Interest                      
Schedule of Investments [Line Items]                      
Fair Value [3],[8],[13]   2,777   2,777              
Cost [3],[8],[13]   2,777   2,777              
Investment, Identifier [Axis]: Flywheel Re Segregated Portfolio 2022-4, Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value   4,808 [3],[8],[13]   4,808 [3],[8],[13]   3,875 [6],[10],[14]          
Cost   2,828 [3],[8],[13]   2,828 [3],[8],[13]   2,828 [6],[10],[14]          
Investment, Identifier [Axis]: Footco 40 Limited, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   246 [2],[3],[8],[17]   246 [2],[3],[8],[17]   217 [5],[6],[10],[18]          
Cost   223 [2],[3],[8],[17]   223 [2],[3],[8],[17]   223 [5],[6],[10],[18]          
Investment, Identifier [Axis]: Footco 40 Limited, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   1,741 [2],[3],[8],[11],[27]   1,741 [2],[3],[8],[11],[27]   1,588 [5],[6],[10],[12],[28]          
Cost   1,642 [2],[3],[8],[11],[27]   1,642 [2],[3],[8],[11],[27]   1,638 [5],[6],[10],[12],[28]          
Investment, Identifier [Axis]: Forest Buyer, LLC, Class A LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   135 [3]   135 [3]   130 [6],[14]          
Cost   122 [3]   122 [3]   122 [6],[14]          
Investment, Identifier [Axis]: Forest Buyer, LLC, Class B LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   141 [3],[13]   141 [3],[13]   124 [6],[14]          
Cost   0 [3],[13]   0 [3],[13]   0 [6],[14]          
Investment, Identifier [Axis]: Forest Buyer, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,060 [2],[3],[21]   6,060 [2],[3],[21]   6,091 [4],[5],[6]          
Cost   6,025 [2],[3],[21]   6,025 [2],[3],[21]   6,049 [4],[5],[6]          
Investment, Identifier [Axis]: Forest Buyer, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (2) [2],[3],[11],[21]   (2) [2],[3],[11],[21]   (2) [4],[5],[6],[12]          
Cost   (6) [2],[3],[11],[21]   (6) [2],[3],[11],[21]   (6) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Fortis Payment Systems, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[6],[12]           8,815          
Cost [4],[5],[6],[12]           8,841          
Investment, Identifier [Axis]: Fortis Payment Systems, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[6],[12]           (9)          
Cost [4],[5],[6],[12]           (7)          
Investment, Identifier [Axis]: FragilePak LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,520 [2],[3],[21]   4,520 [2],[3],[21]   4,544 [4],[5],[6]          
Cost   4,475 [2],[3],[21]   4,475 [2],[3],[21]   4,487 [4],[5],[6]          
Investment, Identifier [Axis]: FragilePak LLC, Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   752 [3],[13]   752 [3],[13]   767 [6],[14]          
Cost   938 [3],[13]   938 [3],[13]   938 [6],[14]          
Investment, Identifier [Axis]: GB Eagle Buyer, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   9,108 [2],[3],[11],[21]   9,108 [2],[3],[11],[21]   9,129 [4],[5],[6],[12]          
Cost   9,010 [2],[3],[11],[21]   9,010 [2],[3],[11],[21]   9,038 [4],[5],[6],[12]          
Investment, Identifier [Axis]: GB Eagle Buyer, Inc., Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   1,490 [3]   1,490 [3]   1,350 [6]          
Cost   687 [3]   687 [3]   687 [6]          
Investment, Identifier [Axis]: GB Eagle Buyer, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   852 [2],[3],[11],[21]   852 [2],[3],[11],[21]   (23) [4],[5],[6],[12]          
Cost   828 [2],[3],[11],[21]   828 [2],[3],[11],[21]   (46) [4],[5],[6],[12]          
Investment, Identifier [Axis]: GCDL LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   326 [3],[13]   326 [3],[13]   243 [6],[14]          
Cost   243 [3],[13]   243 [3],[13]   243 [6],[14]          
Investment, Identifier [Axis]: GCDL LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   528 [2],[3],[11],[21]   528 [2],[3],[11],[21]   529 [4],[5],[6],[12]          
Cost   528 [2],[3],[11],[21]   528 [2],[3],[11],[21]   529 [4],[5],[6],[12]          
Investment, Identifier [Axis]: GCDL LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (1) [2],[3],[11],[21]   (1) [2],[3],[11],[21]   (2) [4],[5],[6],[12]          
Cost   (1) [2],[3],[11],[21]   (1) [2],[3],[11],[21]   (2) [4],[5],[6],[12]          
Investment, Identifier [Axis]: GPNZ II GmbH, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[8],[13]   0 [3],[8],[13]   0 [6],[10],[14]          
Cost   0 [3],[8],[13]   0 [3],[8],[13]   0 [6],[10],[14]          
Investment, Identifier [Axis]: GPNZ II GmbH, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   380 [3],[8],[11]   380 [3],[8],[11]   271 [6],[10]          
Cost   355 [3],[8],[11]   355 [3],[8],[11]   285 [6],[10]          
Investment, Identifier [Axis]: GPNZ II GmbH, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   98 [3],[8]   98 [3],[8]   33 [5],[6],[10],[12]          
Cost   89 [3],[8]   89 [3],[8]   34 [5],[6],[10],[12]          
Investment, Identifier [Axis]: GPNZ II GmbH, First Lien Senior Secured Term Loan 3                      
Schedule of Investments [Line Items]                      
Fair Value   81 [2],[3],[8],[24],[33]   81 [2],[3],[8],[24],[33]   189 [5],[6],[10],[34],[36]          
Cost   446 [2],[3],[8],[24],[33]   446 [2],[3],[8],[24],[33]   446 [5],[6],[10],[34],[36]          
Investment, Identifier [Axis]: Global Academic Group Limited, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   2,650 [2],[3],[8],[31]   2,650 [2],[3],[8],[31]   2,284 [5],[6],[10],[32]          
Cost   2,761 [2],[3],[8],[31]   2,761 [2],[3],[8],[31]   2,530 [5],[6],[10],[32]          
Investment, Identifier [Axis]: Global Academic Group Limited, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   4,334 [2],[3],[8],[11],[47]   4,334 [2],[3],[8],[11],[47]   4,000 [5],[6],[10],[12],[48]          
Cost   4,406 [2],[3],[8],[11],[47]   4,406 [2],[3],[8],[11],[47]   4,389 [5],[6],[10],[12],[48]          
Investment, Identifier [Axis]: Gojo Industries, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   12,676 [1],[2],[3]   12,676 [1],[2],[3]   12,883 [4],[5],[6]          
Cost   12,409 [1],[2],[3]   12,409 [1],[2],[3]   12,874 [4],[5],[6]          
Investment, Identifier [Axis]: Graphpad Software, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   9,463 [2],[3],[11],[21]   9,463 [2],[3],[11],[21]   9,499 [4],[5],[6],[12]          
Cost   9,414 [2],[3],[11],[21]   9,414 [2],[3],[11],[21]   9,457 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Graphpad Software, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [2],[3],[11],[21]   0 [2],[3],[11],[21]   (1) [4],[5],[6],[12]          
Cost   (4) [2],[3],[11],[21]   (4) [2],[3],[11],[21]   (4) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Greenhill II BV, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,093 [2],[3],[8],[17]   1,093 [2],[3],[8],[17]   936 [5],[6],[10],[12],[18]          
Cost   937 [2],[3],[8],[17]   937 [2],[3],[8],[17]   907 [5],[6],[10],[12],[18]          
Investment, Identifier [Axis]: Groupe Guemas, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,406 [2],[3],[8],[26]   5,406 [2],[3],[8],[26]   4,747 [5],[6],[10],[25]          
Cost   4,829 [2],[3],[8],[26]   4,829 [2],[3],[8],[26]   4,821 [5],[6],[10],[25]          
Investment, Identifier [Axis]: Groupe Product Life, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [5],[6],[10],[12],[18]           871          
Cost [5],[6],[10],[12],[18]           874          
Investment, Identifier [Axis]: Groupe Product Life, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[8],[11],[17]   128   128              
Cost [2],[3],[8],[11],[17]   117   117              
Investment, Identifier [Axis]: Groupe Product Life, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[8],[11],[17]   866   866              
Cost [2],[3],[8],[11],[17]   854   854              
Investment, Identifier [Axis]: HEKA Invest, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,498 [2],[3],[8],[11],[17]   5,498 [2],[3],[8],[11],[17]   4,850 [5],[6],[10],[12],[18]          
Cost   4,507 [2],[3],[8],[11],[17]   4,507 [2],[3],[8],[11],[17]   4,497 [5],[6],[10],[12],[18]          
Investment, Identifier [Axis]: HS Advisory Buyer LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[11],[21]   1,935   1,935              
Cost [2],[3],[11],[21]   1,931   1,931              
Investment, Identifier [Axis]: HS Advisory Buyer LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[11],[21]   (8)   (8)              
Cost [2],[3],[11],[21]   (9)   (9)              
Investment, Identifier [Axis]: HSL Compliance, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[8],[11],[27]   2,712   2,712              
Cost [2],[3],[8],[11],[27]   2,545   2,545              
Investment, Identifier [Axis]: HTI Technology & Industries, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   10,197 [2],[3],[11],[22]   10,197 [2],[3],[11],[22]   10,421 [4],[5],[6],[12]          
Cost   11,089 [2],[3],[11],[22]   11,089 [2],[3],[11],[22]   11,052 [4],[5],[6],[12]          
Investment, Identifier [Axis]: HTI Technology & Industries, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (93) [2],[3],[11],[22]   (93) [2],[3],[11],[22]   (70) [4],[5],[6],[12]          
Cost   0 [2],[3],[11],[22]   0 [2],[3],[11],[22]   (4) [4],[5],[6],[12]          
Investment, Identifier [Axis]: HW Holdco, LLC (Hanley Wood LLC), First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   10,831 [2],[3],[21]   10,831 [2],[3],[21]   11,081 [4],[5],[6]          
Cost   10,815 [2],[3],[21]   10,815 [2],[3],[21]   11,055 [4],[5],[6]          
Investment, Identifier [Axis]: Haystack Holdings LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[11],[22]   6,529   6,529              
Cost [2],[3],[11],[22]   6,529   6,529              
Investment, Identifier [Axis]: Haystack Holdings LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[11],[22]   (12)   (12)              
Cost [2],[3],[11],[22]   (12)   (12)              
Investment, Identifier [Axis]: HeartHealth Bidco Pty Ltd, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   623 [2],[3],[8],[11],[31]   623 [2],[3],[8],[11],[31]   602 [5],[6],[10],[32]          
Cost   706 [2],[3],[8],[11],[31]   706 [2],[3],[8],[11],[31]   704 [5],[6],[10],[32]          
Investment, Identifier [Axis]: Heartland Veterinary Partners, LLC, Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   13,675 [3]   13,675 [3]   12,865 [6]          
Cost   14,644 [3]   14,644 [3]   13,840 [6]          
Investment, Identifier [Axis]: Heavy Construction Systems Specialists, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   7,184 [2],[3],[21]   7,184 [2],[3],[21]   7,221 [4],[5],[6]          
Cost   7,120 [2],[3],[21]   7,120 [2],[3],[21]   7,144 [4],[5],[6]          
Investment, Identifier [Axis]: Heavy Construction Systems Specialists, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [2],[3],[11],[21]   0 [2],[3],[11],[21]   0 [4],[5],[6],[12]          
Cost   (21) [2],[3],[11],[21]   (21) [2],[3],[11],[21]   (26) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Heilbron (f/k/a Sucsez (Bolt Bidco B.V.)), First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,555 [2],[3],[8],[33]   3,555 [2],[3],[8],[33]   3,042 [5],[6],[10],[25]          
Cost   3,676 [2],[3],[8],[33]   3,676 [2],[3],[8],[33]   3,676 [5],[6],[10],[25]          
Investment, Identifier [Axis]: HemaSource, Inc., Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   130 [3],[13]   130 [3],[13]   124 [6],[14]          
Cost   101 [3],[13]   101 [3],[13]   101 [6],[14]          
Investment, Identifier [Axis]: HemaSource, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,739 [1],[2],[3]   6,739 [1],[2],[3]   7,267 [5],[6],[20]          
Cost   6,610 [1],[2],[3]   6,610 [1],[2],[3]   7,116 [5],[6],[20]          
Investment, Identifier [Axis]: HemaSource, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [1],[2],[3],[11]   0 [1],[2],[3],[11]   0 [5],[6],[12],[20]          
Cost   (32) [1],[2],[3],[11]   (32) [1],[2],[3],[11]   (35) [5],[6],[12],[20]          
Investment, Identifier [Axis]: Herbalife Ltd., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,285 [1],[2],[8]   3,285 [1],[2],[8]   3,294 [5],[10],[20]          
Cost   3,072 [1],[2],[8]   3,072 [1],[2],[8]   3,130 [5],[10],[20]          
Investment, Identifier [Axis]: Home Care Assistance, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,330 [2],[3],[21]   3,330 [2],[3],[21]   3,524 [4],[5],[6]          
Cost   3,674 [2],[3],[21]   3,674 [2],[3],[21]   3,677 [4],[5],[6]          
Investment, Identifier [Axis]: HomeX Services Group LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,702 [2],[3],[11],[21]   1,702 [2],[3],[11],[21]   1,477 [4],[5],[6],[12]          
Cost   1,683 [2],[3],[11],[21]   1,683 [2],[3],[11],[21]   1,463 [4],[5],[6],[12]          
Investment, Identifier [Axis]: HomeX Services Group LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (2) [2],[3],[11],[21]   (2) [2],[3],[11],[21]   (3) [4],[5],[6],[12]          
Cost   (5) [2],[3],[11],[21]   (5) [2],[3],[11],[21]   (6) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Honour Lane Logistics Holdings Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,667 [2],[3],[8],[22]   6,667 [2],[3],[8],[22]   6,645 [5],[6],[10],[23]          
Cost   6,558 [2],[3],[8],[22]   6,558 [2],[3],[8],[22]   6,542 [5],[6],[10],[23]          
Investment, Identifier [Axis]: Hydratech Holdings, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[6],[12]           7,413          
Cost [4],[5],[6],[12]           7,413          
Investment, Identifier [Axis]: Hydratech Holdings, Inc., First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[11],[21]   4,725   4,725              
Cost [2],[3],[11],[21]   4,724   4,724              
Investment, Identifier [Axis]: Hydratech Holdings, Inc., First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[21]   4,234   4,234              
Cost [2],[3],[21]   4,232   4,232              
Investment, Identifier [Axis]: Hydratech Holdings, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   429 [2],[3],[11],[21]   429 [2],[3],[11],[21]   265 [4],[5],[6],[12]          
Cost   428 [2],[3],[11],[21]   428 [2],[3],[11],[21]   265 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Hygie 31 Holding, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [5],[6],[10],[25]           1,502          
Cost [5],[6],[10],[25]           1,378          
Investment, Identifier [Axis]: Hylan Datacom & Electrical LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value [46]           0 2,013        
Investment, Identifier [Axis]: Hylan Datacom & Electrical LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [46]           0 3,917        
Investment, Identifier [Axis]: Hylan Datacom & Electrical LLC, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [46]           0 4,519        
Investment, Identifier [Axis]: ICREDITWORKS LLC, Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value [3]   10,422   10,422              
Cost [3]   10,423   10,423              
Investment, Identifier [Axis]: ICREDITWORKS LLC, Warrants                      
Schedule of Investments [Line Items]                      
Fair Value [3],[13]   0   0              
Cost [3],[13]   0   0              
Investment, Identifier [Axis]: IM Square, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,884 [2],[3],[8],[17]   2,884 [2],[3],[8],[17]   2,533 [5],[6],[10],[18]          
Cost   2,965 [2],[3],[8],[17]   2,965 [2],[3],[8],[17]   2,960 [5],[6],[10],[18]          
Investment, Identifier [Axis]: ISTO Technologies II, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,664 [2],[3],[21]   6,664 [2],[3],[21]   6,706 [5],[6],[23]          
Cost   6,572 [2],[3],[21]   6,572 [2],[3],[21]   6,598 [5],[6],[23]          
Investment, Identifier [Axis]: ISTO Technologies II, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (2) [2],[3],[11],[21]   (2) [2],[3],[11],[21]   (2) [5],[6],[12],[23]          
Cost   (12) [2],[3],[11],[21]   (12) [2],[3],[11],[21]   (14) [5],[6],[12],[23]          
Investment, Identifier [Axis]: ITI Intermodal, Inc., Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   975 [3],[13]   975 [3],[13]   915 [6],[14]          
Cost   750 [3],[13]   750 [3],[13]   750 [6],[14]          
Investment, Identifier [Axis]: ITI Intermodal, Inc., First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   797 [2],[3],[21]   797 [2],[3],[21]   800 [5],[6],[23]          
Cost   790 [2],[3],[21]   790 [2],[3],[21]   793 [5],[6],[23]          
Investment, Identifier [Axis]: ITI Intermodal, Inc., First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   12,017 [2],[3],[21]   12,017 [2],[3],[21]   12,079 [5],[6],[23]          
Cost   11,825 [2],[3],[21]   11,825 [2],[3],[21]   11,847 [5],[6],[23]          
Investment, Identifier [Axis]: ITI Intermodal, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   226 [2],[3],[11],[21]   226 [2],[3],[11],[21]   225 [5],[6],[12],[23]          
Cost   207 [2],[3],[11],[21]   207 [2],[3],[11],[21]   203 [5],[6],[12],[23]          
Investment, Identifier [Axis]: Ice House America, L.L.C., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,399 [2],[3],[11],[21]   4,399 [2],[3],[11],[21]   4,482 [4],[5],[6],[12]          
Cost   4,491 [2],[3],[11],[21]   4,491 [2],[3],[11],[21]   4,483 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Ice House America, L.L.C., LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   237 [3],[13]   237 [3],[13]   316 [6],[14]          
Cost   289 [3],[13]   289 [3],[13]   283 [6],[14]          
Investment, Identifier [Axis]: Ice House America, L.L.C., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   373 [2],[3],[11],[21]   373 [2],[3],[11],[21]   186 [4],[5],[6],[12]          
Cost   381 [2],[3],[11],[21]   381 [2],[3],[11],[21]   186 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Infoniqa Holdings GmbH, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,085 [2],[3],[8],[17]   3,085 [2],[3],[8],[17]   2,721 [5],[6],[10],[25]          
Cost   2,928 [2],[3],[8],[17]   2,928 [2],[3],[8],[17]   2,923 [5],[6],[10],[25]          
Investment, Identifier [Axis]: Innovad Group II BV, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   7,235 [2],[3],[8],[17]   7,235 [2],[3],[8],[17]   6,383 [5],[6],[10],[25]          
Cost   7,129 [2],[3],[8],[17]   7,129 [2],[3],[8],[17]   7,116 [5],[6],[10],[25]          
Investment, Identifier [Axis]: Innovad Group II BV, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   1,152 [2],[3],[8],[49]   1,152 [2],[3],[8],[49]   1,012 [5],[6],[10],[50]          
Cost   1,019 [2],[3],[8],[49]   1,019 [2],[3],[8],[49]   1,019 [5],[6],[10],[50]          
Investment, Identifier [Axis]: Innovative XCessories & Services, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[16]           2,746          
Cost [4],[5],[16]           2,802          
Investment, Identifier [Axis]: Interstellar Group B.V., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,742 [2],[3],[8],[11],[17]   1,742 [2],[3],[8],[11],[17]   1,509 [5],[6],[10],[12],[18]          
Cost   1,626 [2],[3],[8],[11],[17]   1,626 [2],[3],[8],[11],[17]   1,594 [5],[6],[10],[12],[18]          
Investment, Identifier [Axis]: InvoCare Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,088 [2],[3],[8],[11],[31]   2,088 [2],[3],[8],[11],[31]   1,963 [5],[6],[10],[12],[32]          
Cost   2,067 [2],[3],[8],[11],[31]   2,067 [2],[3],[8],[11],[31]   2,062 [5],[6],[10],[12],[32]          
Investment, Identifier [Axis]: Isagenix International, LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[13],[15]   0 [3],[13],[15]   0 [6],[14],[16]          
Cost   0 [3],[13],[15]   0 [3],[13],[15]   0 [6],[14],[16]          
Investment, Identifier [Axis]: Isagenix International, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   118 [2],[3],[15],[21]   118 [2],[3],[15],[21]   160 [4],[5],[6],[16]          
Cost   736 [2],[3],[15],[21]   736 [2],[3],[15],[21]   668 [4],[5],[6],[16]          
Investment, Identifier [Axis]: Isolstar Holding NV (IPCOM), First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,772 [2],[3],[8],[17]   5,772 [2],[3],[8],[17]   5,075 [5],[6],[10],[18]          
Cost   4,846 [2],[3],[8],[17]   4,846 [2],[3],[8],[17]   4,836 [5],[6],[10],[18]          
Investment, Identifier [Axis]: Ivanti Software Inc, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [2],[15],[21]   939   939              
Cost [2],[15],[21]   868   868              
Investment, Identifier [Axis]: Ivanti Software Inc, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[15],[21]   3,636   3,636              
Cost [2],[3],[15],[21]   6,049   6,049              
Investment, Identifier [Axis]: Ivanti Software, Inc., Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[16]           3,285          
Cost [4],[5],[16]           5,989          
Investment, Identifier [Axis]: JF Acquisition, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[6]           3,736          
Cost [4],[5],[6]           3,709          
Investment, Identifier [Axis]: Jade Bidco Limited (Jane's), First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   1,262 [2],[3],[8],[26]   1,262 [2],[3],[8],[26]   1,112 [5],[6],[10],[25]          
Cost   1,157 [2],[3],[8],[26]   1,157 [2],[3],[8],[26]   1,155 [5],[6],[10],[25]          
Investment, Identifier [Axis]: Jade Bidco Limited (Jane's), First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   6,526 [2],[3],[8],[22]   6,526 [2],[3],[8],[22]   6,579 [5],[6],[10],[23]          
Cost   6,448 [2],[3],[8],[22]   6,448 [2],[3],[8],[22]   6,498 [5],[6],[10],[23]          
Investment, Identifier [Axis]: JetBlue 2019-1 Class B Pass Through Trust, Structured Secured Note - Class B                      
Schedule of Investments [Line Items]                      
Fair Value   2,200   2,200   2,520          
Cost   2,217   2,217   2,495          
Investment, Identifier [Axis]: Jocassee Partners LLC                      
Schedule of Investments [Line Items]                      
Total contributed capital   35,000   35,000   35,000          
Investment, Identifier [Axis]: Jocassee Partners LLC, Member Interest                      
Schedule of Investments [Line Items]                      
Fair Value [10],[12],[51]           40,761          
Cost [10],[12],[51]           35,158          
Investment, Identifier [Axis]: Jocassee Partners LLC, Member Interest                      
Schedule of Investments [Line Items]                      
Fair Value   39,265 [8],[11],[52]   39,265 [8],[11],[52]   40,761 41,053        
Cost [8],[11],[52]   35,158   35,158              
Investment, Identifier [Axis]: Jon Bidco Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,031 [2],[3],[8],[11],[47]   4,031 [2],[3],[8],[11],[47]   3,720 [5],[6],[10],[12],[48]          
Cost   4,330 [2],[3],[8],[11],[47]   4,330 [2],[3],[8],[11],[47]   4,430 [5],[6],[10],[12],[48]          
Investment, Identifier [Axis]: Jones Fish Hatcheries & Distributors LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,455 [2],[3],[22]   4,455 [2],[3],[22]   3,481 [4],[5],[6]          
Cost   4,449 [2],[3],[22]   4,449 [2],[3],[22]   3,434 [4],[5],[6]          
Investment, Identifier [Axis]: Jones Fish Hatcheries & Distributors LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   476 [3],[13]   476 [3],[13]   372 [6]          
Cost   107 [3],[13]   107 [3],[13]   107 [6]          
Investment, Identifier [Axis]: Jones Fish Hatcheries & Distributors LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (4) [2],[3],[11],[22]   (4) [2],[3],[11],[22]   0 [4],[5],[6],[12]          
Cost   (4) [2],[3],[11],[22]   (4) [2],[3],[11],[22]   (4) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Keystone Bidco B.V., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   915 [2],[3],[8],[11],[26]   915 [2],[3],[8],[11],[26]   677 [5],[6],[10],[12],[18]          
Cost   859 [2],[3],[8],[11],[26]   859 [2],[3],[8],[11],[26]   728 [5],[6],[10],[12],[18]          
Investment, Identifier [Axis]: Keystone Bidco B.V., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   10 [2],[3],[8],[11],[26]   10 [2],[3],[8],[11],[26]   18 [5],[6],[10],[12],[18]          
Cost   8 [2],[3],[8],[11],[26]   8 [2],[3],[8],[11],[26]   18 [5],[6],[10],[12],[18]          
Investment, Identifier [Axis]: Kid Distro Holdings, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   13,088 [2],[3],[21]   13,088 [2],[3],[21]   13,156 [4],[5],[6]          
Cost   13,010 [2],[3],[21]   13,010 [2],[3],[21]   13,063 [4],[5],[6]          
Investment, Identifier [Axis]: Kid Distro Holdings, LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   797 [3],[13]   797 [3],[13]   772 [6],[14]          
Cost   638 [3],[13]   638 [3],[13]   638 [6],[14]          
Investment, Identifier [Axis]: Kline Hill Partners LP, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value [3],[13]   47   47              
Cost [3],[13]   47   47              
Investment, Identifier [Axis]: Kline Hill Partners LP, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[11],[21]   2,022   2,022              
Cost [2],[3],[11],[21]   2,045   2,045              
Investment, Identifier [Axis]: Kline Hill Partners LP, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[11],[21]   (9)   (9)              
Cost [2],[3],[11],[21]   (9)   (9)              
Investment, Identifier [Axis]: Kline Hill Partners LP, Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[11]   2,217   2,217              
Cost [3],[11]   2,217   2,217              
Investment, Identifier [Axis]: Lambir Bidco Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,295 [2],[3],[8],[11],[26]   2,295 [2],[3],[8],[11],[26]   1,952 [5],[6],[10],[12],[25]          
Cost   2,269 [2],[3],[8],[11],[26]   2,269 [2],[3],[8],[11],[26]   2,159 [5],[6],[10],[12],[25]          
Investment, Identifier [Axis]: Lambir Bidco Limited, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,050 [3],[8]   2,050 [3],[8]   1,721 [6],[10]          
Cost   2,075 [3],[8]   2,075 [3],[8]   1,947 [6],[10]          
Investment, Identifier [Axis]: Lattice Group Holdings Bidco Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [5],[6],[10],[12],[23]           687          
Cost [5],[6],[10],[12],[23]           711          
Investment, Identifier [Axis]: Lattice Group Holdings Bidco Limited, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[8],[11],[21]   738   738              
Cost [2],[3],[8],[11],[21]   726   726              
Investment, Identifier [Axis]: Lattice Group Holdings Bidco Limited, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[8],[29]   158   158              
Cost [2],[3],[8],[29]   155   155              
Investment, Identifier [Axis]: Lattice Group Holdings Bidco Limited, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   35 [2],[3],[8],[21]   35 [2],[3],[8],[21]   (1) [5],[6],[10],[12],[23]          
Cost   35 [2],[3],[8],[21]   35 [2],[3],[8],[21]   (1) [5],[6],[10],[12],[23]          
Investment, Identifier [Axis]: LeadsOnline, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   9,986 [2],[3],[21]   9,986 [2],[3],[21]   10,029 [4],[5],[6]          
Cost   9,932 [2],[3],[21]   9,932 [2],[3],[21]   9,968 [4],[5],[6]          
Investment, Identifier [Axis]: LeadsOnline, LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   202 [3],[13]   202 [3],[13]   180 [6]          
Cost   85 [3],[13]   85 [3],[13]   85 [6]          
Investment, Identifier [Axis]: LeadsOnline, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (8) [2],[3],[11],[21]   (8) [2],[3],[11],[21]   (10) [4],[5],[6],[12]          
Cost   (20) [2],[3],[11],[21]   (20) [2],[3],[11],[21]   (24) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Learfield Communications, LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value [6],[14]           4,085          
Cost [6],[14]           1,921          
Investment, Identifier [Axis]: Learfield Communications, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,480 [1],[2]   5,480 [1],[2]   5,520 [5],[20]          
Cost   5,457 [1],[2]   5,457 [1],[2]   5,486 [5],[20]          
Investment, Identifier [Axis]: Legal Solutions Holdings, Senior Subordinated Loan                      
Schedule of Investments [Line Items]                      
Fair Value [6],[36],[53]           0          
Cost [6],[36],[53]           10,128          
Investment, Identifier [Axis]: Lifestyle Intermediate II, LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value [3],[13]   0   0              
Cost [3],[13]   0   0              
Investment, Identifier [Axis]: Lifestyle Intermediate II, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,721 [2],[3],[15],[21]   2,721 [2],[3],[15],[21]   2,812 [4],[5],[6],[16]          
Cost   2,911 [2],[3],[15],[21]   2,911 [2],[3],[15],[21]   2,992 [4],[5],[6],[16]          
Investment, Identifier [Axis]: Lockmasters Security Intermediate, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[11],[21]   9,342   9,342              
Cost [2],[3],[11],[21]   9,348   9,348              
Investment, Identifier [Axis]: Lockmasters Security Intermediate, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [1],[2],[3],[11]   80   80              
Cost [1],[2],[3],[11]   80   80              
Investment, Identifier [Axis]: Long Term Care Group, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   8,327 [2],[3],[21]   8,327 [2],[3],[21]   7,839 [4],[5],[6]          
Cost   8,733 [2],[3],[21]   8,733 [2],[3],[21]   8,676 [4],[5],[6]          
Investment, Identifier [Axis]: M-Personal Protection Management GMBH (f.k.a INOS 19-090 GmbH), First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [5],[6],[10],[18]           10,829          
Cost [5],[6],[10],[18]           11,395          
Investment, Identifier [Axis]: M-Personal Protection Management GmbH, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[8],[17]   12,590   12,590              
Cost [2],[3],[8],[17]   11,440   11,440              
Investment, Identifier [Axis]: MB Purchaser, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,255 [2],[3],[11],[21]   3,255 [2],[3],[11],[21]   2,591 [5],[6],[12],[20]          
Cost   3,216 [2],[3],[11],[21]   3,216 [2],[3],[11],[21]   2,550 [5],[6],[12],[20]          
Investment, Identifier [Axis]: MB Purchaser, LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   89 [3],[13]   89 [3],[13]   82 [6],[14]          
Cost   68 [3],[13]   68 [3],[13]   68 [6],[14]          
Investment, Identifier [Axis]: MB Purchaser, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (1) [2],[3],[11],[21]   (1) [2],[3],[11],[21]   (2) [5],[6],[12],[20]          
Cost   (5) [2],[3],[11],[21]   (5) [2],[3],[11],[21]   (5) [5],[6],[12],[20]          
Investment, Identifier [Axis]: MC Group Ventures Corporation, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   4,785 [2],[3],[11],[21]   4,785 [2],[3],[11],[21]   4,899 [5],[6],[12],[20]          
Cost   5,011 [2],[3],[11],[21]   5,011 [2],[3],[11],[21]   5,016 [5],[6],[12],[20]          
Investment, Identifier [Axis]: MC Group Ventures Corporation, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   3,967 [2],[3],[11],[21]   3,967 [2],[3],[11],[21]   4,036 [5],[6],[12],[23]          
Cost   4,049 [2],[3],[11],[21]   4,049 [2],[3],[11],[21]   4,062 [5],[6],[12],[23]          
Investment, Identifier [Axis]: MC Group Ventures Corporation, Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   526 [3],[13]   526 [3],[13]   681 [6],[14]          
Cost   747 [3],[13]   747 [3],[13]   747 [6],[14]          
Investment, Identifier [Axis]: MI OpCo Holdings, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [5],[20]           6,320          
Cost [5],[20]           5,722          
Investment, Identifier [Axis]: MNS Buyer, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   581 [1],[2],[3]   581 [1],[2],[3]   662 [4],[5],[6]          
Cost   576 [1],[2],[3]   576 [1],[2],[3]   656 [4],[5],[6]          
Investment, Identifier [Axis]: MNS Buyer, Inc., Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   112 [3],[13]   112 [3],[13]   106 [6],[14]          
Cost   77 [3],[13]   77 [3],[13]   77 [6],[14]          
Investment, Identifier [Axis]: MSI Express Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[11],[21]   5,478   5,478              
Cost [2],[3],[11],[21]   5,474   5,474              
Investment, Identifier [Axis]: MSI Express Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[11],[21]   627   627              
Cost [2],[3],[11],[21]   626   626              
Investment, Identifier [Axis]: MVC Automotive Group GmbH, Bridge Loan                      
Schedule of Investments [Line Items]                      
Fair Value [41]           0 9,762        
Investment, Identifier [Axis]: MVC Automotive Group GmbH, Common Equity Interest                      
Schedule of Investments [Line Items]                      
Fair Value [6],[10],[14],[53]           13,741          
Cost [6],[10],[14],[53]           19,173          
Investment, Identifier [Axis]: MVC Automotive Group GmbH, Common Equity Interest                      
Schedule of Investments [Line Items]                      
Fair Value   11,995 [39]   11,995 [39]   13,741 [41] 15,430 [41]        
Investment, Identifier [Axis]: MVC Automotive Group Gmbh, Common Equity Interest                      
Schedule of Investments [Line Items]                      
Fair Value [3],[8],[13],[54]   11,995   11,995              
Cost [3],[8],[13],[54]   19,173   19,173              
Investment, Identifier [Axis]: MVC Private Equity Fund LP, General Partnership Interest                      
Schedule of Investments [Line Items]                      
Fair Value   0   0   0 [10],[14],[53] 24        
Cost [10],[14],[53]           184          
Investment, Identifier [Axis]: MVC Private Equity Fund LP, Limited Partnership Interest                      
Schedule of Investments [Line Items]                      
Fair Value   0   0   11 [10],[14],[53] 981        
Cost [10],[14],[53]           7,282          
Investment, Identifier [Axis]: Magnetite XIX, Limited, Subordinated Notes                      
Schedule of Investments [Line Items]                      
Fair Value   5,128 [2],[8],[21]   5,128 [2],[8],[21]   10,500 [4],[6],[10],[16]          
Cost   5,250 [2],[8],[21]   5,250 [2],[8],[21]   10,357 [4],[6],[10],[16]          
Investment, Identifier [Axis]: Marmoutier Holding B.V., Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value [3],[8],[13]   0   0              
Cost [3],[8],[13]   0   0              
Investment, Identifier [Axis]: Marmoutier Holding B.V., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   41 [2],[3],[8],[11],[17]   41 [2],[3],[8],[11],[17]   146 [5],[6],[10],[12],[25],[36]          
Cost   64 [2],[3],[8],[11],[17]   64 [2],[3],[8],[11],[17]   2,415 [5],[6],[10],[12],[25],[36]          
Investment, Identifier [Axis]: Marmoutier Holding B.V., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   150 [2],[3],[8],[26]   150 [2],[3],[8],[26]   (53) [5],[6],[10],[12],[25],[36]          
Cost   156 [2],[3],[8],[26]   156 [2],[3],[8],[26]   104 [5],[6],[10],[12],[25],[36]          
Investment, Identifier [Axis]: Marmoutier Holding B.V., Super Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   164 [2],[3],[8],[26]   164 [2],[3],[8],[26]   185 [5],[6],[10],[36]          
Cost   175 [2],[3],[8],[26]   175 [2],[3],[8],[26]   194 [5],[6],[10],[36]          
Investment, Identifier [Axis]: Media Recovery, Inc. (SpotSee), First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   1,751 [2],[3],[21]   1,751 [2],[3],[21]   1,747 [4],[5],[6]          
Cost   1,748 [2],[3],[21]   1,748 [2],[3],[21]   1,746 [4],[5],[6]          
Investment, Identifier [Axis]: Media Recovery, Inc. (SpotSee), First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   3,720 [2],[3],[42]   3,720 [2],[3],[42]   3,775 [5],[6],[43]          
Cost   3,634 [2],[3],[42]   3,634 [2],[3],[42]   4,039 [5],[6],[43]          
Investment, Identifier [Axis]: Media Recovery, Inc. (SpotSee), Revolver 1                      
Schedule of Investments [Line Items]                      
Fair Value   237 [2],[3],[11],[21]   237 [2],[3],[11],[21]   (9) [4],[5],[6],[12]          
Cost   236 [2],[3],[11],[21]   236 [2],[3],[11],[21]   (9) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Media Recovery, Inc. (SpotSee), Revolver 2                      
Schedule of Investments [Line Items]                      
Fair Value   (9) [2],[3],[11],[42]   (9) [2],[3],[11],[42]   (10) [5],[6],[12],[43]          
Cost   (11) [2],[3],[11],[42]   (11) [2],[3],[11],[42]   (11) [5],[6],[12],[43]          
Investment, Identifier [Axis]: Median B.V., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   9,910 [2],[8],[27]   9,910 [2],[8],[27]   8,966 [5],[10],[30]          
Cost   9,938 [2],[8],[27]   9,938 [2],[8],[27]   9,907 [5],[10],[30]          
Investment, Identifier [Axis]: Medical Solutions Parent Holdings, Inc., Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,864 [2],[21]   1,864 [2],[21]   2,211 [4],[5]          
Cost   4,396 [2],[21]   4,396 [2],[21]   4,394 [4],[5]          
Investment, Identifier [Axis]: Megawatt Acquisitionco, Inc., Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[13]   0 [3],[13]   0 [6],[14]          
Cost   21 [3],[13]   21 [3],[13]   21 [6],[14]          
Investment, Identifier [Axis]: Megawatt Acquisitionco, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,882 [2],[3],[21]   3,882 [2],[3],[21]   3,648 [4],[5],[6]          
Cost   4,074 [2],[3],[21]   4,074 [2],[3],[21]   4,088 [4],[5],[6]          
Investment, Identifier [Axis]: Megawatt Acquisitionco, Inc., Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value   96 [3],[13]   96 [3],[13]   46 [6],[14]          
Cost   184 [3],[13]   184 [3],[13]   184 [6],[14]          
Investment, Identifier [Axis]: Megawatt Acquisitionco, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   132 [2],[3],[11],[21]   132 [2],[3],[11],[21]   108 [4],[5],[6],[12]          
Cost   163 [2],[3],[11],[21]   163 [2],[3],[11],[21]   178 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Mercell Holding AS, Class A Units                      
Schedule of Investments [Line Items]                      
Fair Value   146 [3],[8],[13]   146 [3],[8],[13]   125 [6],[10],[14]          
Cost   111 [3],[8],[13]   111 [3],[8],[13]   111 [6],[10],[14]          
Investment, Identifier [Axis]: Mercell Holding AS, Class B Units                      
Schedule of Investments [Line Items]                      
Fair Value   9 [3],[8],[13]   9 [3],[8],[13]   21 [6],[10],[14]          
Cost   0 [3],[8],[13]   0 [3],[8],[13]   0 [6],[10],[14]          
Investment, Identifier [Axis]: Mercell Holding AS, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,102 [2],[3],[8],[11],[55]   3,102 [2],[3],[8],[11],[55]   2,750 [5],[6],[10],[12],[56]          
Cost   3,156 [2],[3],[8],[11],[55]   3,156 [2],[3],[8],[11],[55]   3,150 [5],[6],[10],[12],[56]          
Investment, Identifier [Axis]: Modern Star Holdings Bidco Pty Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[8],[11],[57]   7,292   7,292              
Cost [2],[3],[8],[11],[57]   8,146   8,146              
Investment, Identifier [Axis]: Modern Star Holdings Bidco Pty Limited., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [5],[6],[10],[12],[58]           7,008          
Cost [5],[6],[10],[12],[58]           8,268          
Investment, Identifier [Axis]: Momentum Textiles, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[21]   7,243   7,243              
Cost [2],[3],[21]   7,241   7,241              
Investment, Identifier [Axis]: Momentum Textiles, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[11],[21]   (8)   (8)              
Cost [2],[3],[11],[21]   (9)   (9)              
Investment, Identifier [Axis]: Moonlight Bidco Limited, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   209 [3],[8],[13]   209 [3],[8],[13]   182 [6],[10],[14]          
Cost   138 [3],[8],[13]   138 [3],[8],[13]   138 [6],[10],[14]          
Investment, Identifier [Axis]: Moonlight Bidco Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,036 [2],[3],[8],[11],[27]   2,036 [2],[3],[8],[11],[27]   1,841 [5],[6],[10],[12],[28]          
Cost   1,889 [2],[3],[8],[11],[27]   1,889 [2],[3],[8],[11],[27]   1,884 [5],[6],[10],[12],[28]          
Investment, Identifier [Axis]: Murphy Midco Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,730 [2],[3],[8],[29]   1,730 [2],[3],[8],[29]   1,641 [5],[6],[10],[30]          
Cost   1,720 [2],[3],[8],[29]   1,720 [2],[3],[8],[29]   1,716 [5],[6],[10],[30]          
Investment, Identifier [Axis]: Music Reports, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,750 [2],[3],[21]   6,750 [2],[3],[21]   6,618 [4],[5],[6]          
Cost   6,884 [2],[3],[21]   6,884 [2],[3],[21]   6,868 [4],[5],[6]          
Investment, Identifier [Axis]: NAW Buyer LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   11,790 [2],[3],[11],[21]   11,790 [2],[3],[11],[21]   11,850 [4],[5],[6],[12]          
Cost   11,462 [2],[3],[11],[21]   11,462 [2],[3],[11],[21]   11,489 [4],[5],[6],[12]          
Investment, Identifier [Axis]: NAW Buyer LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   515 [3]   515 [3]   524 [6]          
Cost   473 [3]   473 [3]   473 [6]          
Investment, Identifier [Axis]: NAW Buyer LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [2],[3],[11],[21]   0 [2],[3],[11],[21]   0 [4],[5],[6],[12]          
Cost   (33) [2],[3],[11],[21]   (33) [2],[3],[11],[21]   (37) [4],[5],[6],[12]          
Investment, Identifier [Axis]: NF Holdco, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,151 [2],[3],[21]   6,151 [2],[3],[21]   6,283 [4],[5],[6]          
Cost   6,119 [2],[3],[21]   6,119 [2],[3],[21]   6,137 [4],[5],[6]          
Investment, Identifier [Axis]: NF Holdco, LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   377 [3],[13]   377 [3],[13]   563 [6],[14]          
Cost   659 [3],[13]   659 [3],[13]   659 [6],[14]          
Investment, Identifier [Axis]: NF Holdco, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   457 [2],[3],[11],[21]   457 [2],[3],[11],[21]   276 [4],[5],[6],[12]          
Cost   454 [2],[3],[11],[21]   454 [2],[3],[11],[21]   253 [4],[5],[6],[12]          
Investment, Identifier [Axis]: NPM Investments 28 B.V., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,131 [2],[3],[8],[11],[17]   2,131 [2],[3],[8],[11],[17]   1,869 [5],[6],[10],[12],[18]          
Cost   1,745 [2],[3],[8],[11],[17]   1,745 [2],[3],[8],[11],[17]   1,741 [5],[6],[10],[12],[18]          
Investment, Identifier [Axis]: Napa Bidco Pty Ltd, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   13,187 [2],[3],[8],[31]   13,187 [2],[3],[8],[31]   12,459 [5],[6],[10],[32]          
Cost   14,292 [2],[3],[8],[31]   14,292 [2],[3],[8],[31]   14,257 [5],[6],[10],[32]          
Investment, Identifier [Axis]: Narda Acquisitionco., Inc., Class A Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value [6],[14]           578          
Cost [6],[14]           459          
Investment, Identifier [Axis]: Narda Acquisitionco., Inc., Class B Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value [6],[14]           743          
Cost [6],[14]           51          
Investment, Identifier [Axis]: Narda Acquisitionco., Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [5],[6],[20]           5,074          
Cost [5],[6],[20]           5,030          
Investment, Identifier [Axis]: Narda Acquisitionco., Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [5],[6],[12],[20]           0          
Cost [5],[6],[12],[20]           (11)          
Investment, Identifier [Axis]: Navia Benefit Solutions, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,543 [1],[2],[3]   5,543 [1],[2],[3]   5,572 [5],[6],[20]          
Cost   5,502 [1],[2],[3]   5,502 [1],[2],[3]   5,518 [5],[6],[20]          
Investment, Identifier [Axis]: NeoxCo, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,807 [2],[3],[8],[26]   2,807 [2],[3],[8],[26]   2,456 [5],[6],[10],[25]          
Cost   2,530 [2],[3],[8],[26]   2,530 [2],[3],[8],[26]   2,525 [5],[6],[10],[25]          
Investment, Identifier [Axis]: Next Holdco, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   22,098 [2],[3],[11],[21]   22,098 [2],[3],[11],[21]   7,320 [4],[5],[6],[12]          
Cost   22,008 [2],[3],[11],[21]   22,008 [2],[3],[11],[21]   7,199 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Next Holdco, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (5) [2],[3],[11],[21]   (5) [2],[3],[11],[21]   0 [4],[5],[6],[12]          
Cost   (8) [2],[3],[11],[21]   (8) [2],[3],[11],[21]   (9) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Northstar Recycling, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   8,237 [2],[3],[11],[21]   8,237 [2],[3],[11],[21]   16,910 [4],[5],[6],[12]          
Cost   8,222 [2],[3],[11],[21]   8,222 [2],[3],[11],[21]   16,911 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Northstar Recycling, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (35) [2],[3],[11],[21]   (35) [2],[3],[11],[21]   (44) [4],[5],[6],[12]          
Cost   (40) [2],[3],[11],[21]   (40) [2],[3],[11],[21]   (44) [4],[5],[6],[12]          
Investment, Identifier [Axis]: OA Buyer, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [5],[6],[20]           8,268          
Cost [5],[6],[20]           8,223          
Investment, Identifier [Axis]: OA Buyer, Inc., Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value [6]           783          
Cost [6]           211          
Investment, Identifier [Axis]: OA Buyer, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [5],[6],[12],[20]           (5)          
Cost [5],[6],[12],[20]           (15)          
Investment, Identifier [Axis]: OAC Holdings I Corp, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,303 [2],[3],[21]   3,303 [2],[3],[21]   3,539 [5],[6],[20]          
Cost   3,267 [2],[3],[21]   3,267 [2],[3],[21]   3,496 [5],[6],[20]          
Investment, Identifier [Axis]: OAC Holdings I Corp, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   724 [2],[3],[11],[21]   724 [2],[3],[11],[21]   0 [5],[6],[12],[20]          
Cost   711 [2],[3],[11],[21]   711 [2],[3],[11],[21]   (15) [5],[6],[12],[20]          
Investment, Identifier [Axis]: OG III B.V., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [5],[6],[10],[18]           3,241          
Cost [5],[6],[10],[18]           3,695          
Investment, Identifier [Axis]: OG III B.V., First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[8],[17]   2,233   2,233              
Cost [2],[3],[8],[17]   2,347   2,347              
Investment, Identifier [Axis]: OG III B.V., First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[8],[17]   1,373   1,373              
Cost [2],[3],[8],[17]   1,354   1,354              
Investment, Identifier [Axis]: ORS Buyer, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[21]   4,916   4,916              
Cost [2],[3],[21]   4,916   4,916              
Investment, Identifier [Axis]: ORTEC INTERNATIONAL NEWCO B.V., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,073 [2],[3],[8],[17]   1,073 [2],[3],[8],[17]   931 [5],[6],[10],[18]          
Cost   977 [2],[3],[8],[17]   977 [2],[3],[8],[17]   976 [5],[6],[10],[18]          
Investment, Identifier [Axis]: OSP Hamilton Purchaser, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   15,291 [2],[3],[11],[21]   15,291 [2],[3],[11],[21]   13,901 [4],[5],[6],[12]          
Cost   15,254 [2],[3],[11],[21]   15,254 [2],[3],[11],[21]   13,874 [4],[5],[6],[12]          
Investment, Identifier [Axis]: OSP Hamilton Purchaser, LLC, LP Units                      
Schedule of Investments [Line Items]                      
Fair Value   189 [3]   189 [3]   151 [6]          
Cost   174 [3]   174 [3]   174 [6]          
Investment, Identifier [Axis]: OSP Hamilton Purchaser, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   654 [2],[3],[11],[21]   654 [2],[3],[11],[21]   430 [4],[5],[6],[12]          
Cost   651 [2],[3],[11],[21]   651 [2],[3],[11],[21]   427 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Ocelot Holdco LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   1,538 [3],[13]   1,538 [3],[13]   742 [6],[14]          
Cost   0 [3],[13]   0 [3],[13]   0 [6],[14]          
Investment, Identifier [Axis]: Ocelot Holdco LLC, Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value   3,054 [3]   3,054 [3]   2,873 [6]          
Cost   2,211 [3]   2,211 [3]   1,562 [6]          
Investment, Identifier [Axis]: Ocelot Holdco LLC, Super Senior Takeback Loan                      
Schedule of Investments [Line Items]                      
Fair Value   549 [3]   549 [3]   549 [5],[6]          
Cost   549 [3]   549 [3]   549 [5],[6]          
Investment, Identifier [Axis]: Ocelot Holdco LLC, Takeback Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,933 [3]   2,933 [3]   2,933 [5],[6]          
Cost   2,933 [3]   2,933 [3]   2,933 [5],[6]          
Investment, Identifier [Axis]: Ocular Therapeutix, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,798 [1],[2],[3],[8]   4,798 [1],[2],[3],[8]   4,849 [5],[6],[10],[20]          
Cost   3,840 [1],[2],[3],[8]   3,840 [1],[2],[3],[8]   3,832 [5],[6],[10],[20]          
Investment, Identifier [Axis]: Offen Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,694 [1],[3],[15]   3,694 [1],[3],[15]   3,681 [6],[16],[20]          
Cost   3,675 [1],[3],[15]   3,675 [1],[3],[15]   3,681 [6],[16],[20]          
Investment, Identifier [Axis]: Oracle Vision Bidco Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,083 [2],[3],[8],[29]   3,083 [2],[3],[8],[29]   2,802 [5],[6],[10],[30]          
Cost   3,181 [2],[3],[8],[29]   3,181 [2],[3],[8],[29]   3,175 [5],[6],[10],[30]          
Investment, Identifier [Axis]: Origin Bidco Limited, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   342 [2],[3],[8],[17]   342 [2],[3],[8],[17]   301 [5],[6],[10],[18]          
Cost   356 [2],[3],[8],[17]   356 [2],[3],[8],[17]   355 [5],[6],[10],[18]          
Investment, Identifier [Axis]: Origin Bidco Limited, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   525 [2],[3],[8],[21]   525 [2],[3],[8],[21]   522 [4],[5],[6],[10]          
Cost   526 [2],[3],[8],[21]   526 [2],[3],[8],[21]   525 [4],[5],[6],[10]          
Investment, Identifier [Axis]: Owl Intermediate Holdings, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[11],[21]   7,751   7,751              
Cost [2],[3],[11],[21]   7,754   7,754              
Investment, Identifier [Axis]: Owl Intermediate Holdings, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[11],[21]   38   38              
Cost [2],[3],[11],[21]   39   39              
Investment, Identifier [Axis]: PDQ.Com Corporation, Class A-2 Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   32 [3]   32 [3]   42 [6],[14]          
Cost   14 [3]   14 [3]   29 [6],[14]          
Investment, Identifier [Axis]: PDQ.Com Corporation, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   14,731 [2],[3],[11],[21]   14,731 [2],[3],[11],[21]   14,514 [4],[5],[6],[12]          
Cost   14,744 [2],[3],[11],[21]   14,744 [2],[3],[11],[21]   14,558 [4],[5],[6],[12]          
Investment, Identifier [Axis]: PSP Intermediate 4, LLC, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   943 [2],[3],[8],[17]   943 [2],[3],[8],[17]   844 [5],[6],[10],[12],[18]          
Cost   848 [2],[3],[8],[17]   848 [2],[3],[8],[17]   846 [5],[6],[10],[12],[18]          
Investment, Identifier [Axis]: PSP Intermediate 4, LLC, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   1,391 [2],[3],[8],[21]   1,391 [2],[3],[8],[21]   1,408 [4],[5],[6],[10]          
Cost   1,396 [2],[3],[8],[21]   1,396 [2],[3],[8],[21]   1,394 [4],[5],[6],[10]          
Investment, Identifier [Axis]: Panoche Energy Center LLC, First Lien Senior Secured Bond                      
Schedule of Investments [Line Items]                      
Fair Value   3,354 [3]   3,354 [3]   3,695 [6]          
Cost   3,171 [3]   3,171 [3]   3,458 [6]          
Investment, Identifier [Axis]: Pare SAS (SAS Maurice MARLE), First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   2,898 [2],[3],[8],[17]   2,898 [2],[3],[8],[17]   2,688 [5],[6],[10],[25]          
Cost   2,737 [2],[3],[8],[17]   2,737 [2],[3],[8],[17]   2,873 [5],[6],[10],[25]          
Investment, Identifier [Axis]: Pare SAS (SAS Maurice MARLE), First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   1,500 [2],[3],[8],[21]   1,500 [2],[3],[8],[21]   1,500 [4],[5],[6],[10]          
Cost   1,500 [2],[3],[8],[21]   1,500 [2],[3],[8],[21]   1,500 [4],[5],[6],[10]          
Investment, Identifier [Axis]: Parkview Dental Holdings LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [5],[6],[12],[20]           609          
Cost [5],[6],[12],[20]           608          
Investment, Identifier [Axis]: Parkview Dental Holdings LLC, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [1],[2],[3]   29   29              
Cost [1],[2],[3]   29   29              
Investment, Identifier [Axis]: Parkview Dental Holdings LLC, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [1],[2],[3]   593   593              
Cost [1],[2],[3]   586   586              
Investment, Identifier [Axis]: Parkview Dental Holdings LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   261 [3],[13]   261 [3],[13]   263 [6],[14]          
Cost   298 [3],[13]   298 [3],[13]   298 [6],[14]          
Investment, Identifier [Axis]: Parkview Dental Holdings LLC, Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value [3]   37   37              
Cost [3]   12   12              
Investment, Identifier [Axis]: Patriot New Midco 1 Limited (Forensic Risk Alliance), First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   2,114 [2],[3],[8],[17]   2,114 [2],[3],[8],[17]   2,045 [5],[6],[10],[18]          
Cost   1,958 [2],[3],[8],[17]   1,958 [2],[3],[8],[17]   2,140 [5],[6],[10],[18]          
Investment, Identifier [Axis]: Patriot New Midco 1 Limited (Forensic Risk Alliance), First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   2,397 [2],[3],[8],[21]   2,397 [2],[3],[8],[21]   2,628 [4],[5],[6],[10]          
Cost   2,390 [2],[3],[8],[21]   2,390 [2],[3],[8],[21]   2,613 [4],[5],[6],[10]          
Investment, Identifier [Axis]: Perimeter Master Note Business Trust, Structured Secured Note - Class A                      
Schedule of Investments [Line Items]                      
Fair Value   180 [3],[8]   180 [3],[8]   177 [6],[10]          
Cost   182 [3],[8]   182 [3],[8]   182 [6],[10]          
Investment, Identifier [Axis]: Perimeter Master Note Business Trust, Structured Secured Note - Class B                      
Schedule of Investments [Line Items]                      
Fair Value   181 [3],[8]   181 [3],[8]   178 [6],[10]          
Cost   182 [3],[8]   182 [3],[8]   182 [6],[10]          
Investment, Identifier [Axis]: Perimeter Master Note Business Trust, Structured Secured Note - Class C                      
Schedule of Investments [Line Items]                      
Fair Value   182 [3],[8]   182 [3],[8]   180 [6],[10]          
Cost   182 [3],[8]   182 [3],[8]   182 [6],[10]          
Investment, Identifier [Axis]: Perimeter Master Note Business Trust, Structured Secured Note - Class D                      
Schedule of Investments [Line Items]                      
Fair Value   183 [3],[8]   183 [3],[8]   178 [6],[10]          
Cost   182 [3],[8]   182 [3],[8]   182 [6],[10]          
Investment, Identifier [Axis]: Perimeter Master Note Business Trust, Structured Secured Note - Class E                      
Schedule of Investments [Line Items]                      
Fair Value   9,292 [3],[8]   9,292 [3],[8]   8,904 [6],[10]          
Cost   9,274 [3],[8]   9,274 [3],[8]   9,274 [6],[10]          
Investment, Identifier [Axis]: Permaconn BidCo Pty Ltd, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,685 [2],[3],[8],[31]   2,685 [2],[3],[8],[31]   2,537 [5],[6],[10],[32]          
Cost   2,715 [2],[3],[8],[31]   2,715 [2],[3],[8],[31]   2,710 [5],[6],[10],[32]          
Investment, Identifier [Axis]: Polara Enterprises, L.L.C., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   951 [1],[2],[3]   951 [1],[2],[3]   957 [4],[5],[6]          
Cost   942 [1],[2],[3]   942 [1],[2],[3]   947 [4],[5],[6]          
Investment, Identifier [Axis]: Polara Enterprises, L.L.C., Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   1,741 [3]   1,741 [3]   1,229 [6]          
Cost   741 [3]   741 [3]   741 [6]          
Investment, Identifier [Axis]: Polara Enterprises, L.L.C., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   545 [1],[2],[3],[11]   545 [1],[2],[3],[11]   0 [4],[5],[6],[12]          
Cost   534 [1],[2],[3],[11]   534 [1],[2],[3],[11]   (5) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Policy Services Company, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   51,912 [2],[3],[21]   51,912 [2],[3],[21]   52,940 [4],[5],[6]          
Cost   51,613 [2],[3],[21]   51,613 [2],[3],[21]   52,938 [4],[5],[6]          
Investment, Identifier [Axis]: Policy Services Company, LLC, Warrants - Class A                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[13]   0 [3],[13]   1,262 [6],[14]          
Cost   0 [3],[13]   0 [3],[13]   0 [6],[14]          
Investment, Identifier [Axis]: Policy Services Company, LLC, Warrants - Class B                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[13]   0 [3],[13]   426 [6],[14]          
Cost   0 [3],[13]   0 [3],[13]   0 [6],[14]          
Investment, Identifier [Axis]: Policy Services Company, LLC, Warrants - Class CC                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[13]   0 [3],[13]   0 [6],[14]          
Cost   0 [3],[13]   0 [3],[13]   0 [6],[14]          
Investment, Identifier [Axis]: Policy Services Company, LLC, Warrants - Class D                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[13]   0 [3],[13]   122 [6],[14]          
Cost   0 [3],[13]   0 [3],[13]   0 [6],[14]          
Investment, Identifier [Axis]: Polymer Solutions Group Holdings, LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[13]   0 [3],[13]   0 [6],[14]          
Cost   0 [3],[13]   0 [3],[13]   0 [6],[14]          
Investment, Identifier [Axis]: Polymer Solutions Group Holdings, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   421 [1],[2],[3],[15],[24]   421 [1],[2],[3],[15],[24]   554 [5],[6],[16],[20],[36]          
Cost   993 [1],[2],[3],[15],[24]   993 [1],[2],[3],[15],[24]   993 [5],[6],[16],[20],[36]          
Investment, Identifier [Axis]: PowerGEM Buyer, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   8,909 [2],[3],[11],[21]   8,909 [2],[3],[11],[21]   6,710 [4],[5],[6],[12]          
Cost   8,954 [2],[3],[11],[21]   8,954 [2],[3],[11],[21]   6,776 [4],[5],[6],[12]          
Investment, Identifier [Axis]: PowerGEM Buyer, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (20) [2],[3],[11],[21]   (20) [2],[3],[11],[21]   (26) [4],[5],[6],[12]          
Cost   (23) [2],[3],[11],[21]   (23) [2],[3],[11],[21]   (25) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Premium Franchise Brands, LLC, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   7,353 [2],[3],[21]   7,353 [2],[3],[21]   7,377 [4],[5],[6]          
Cost   7,399 [2],[3],[21]   7,399 [2],[3],[21]   7,425 [4],[5],[6]          
Investment, Identifier [Axis]: Premium Franchise Brands, LLC, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   2,710 [2],[3],[21]   2,710 [2],[3],[21]   2,694 [4],[5],[6]          
Cost   2,672 [2],[3],[21]   2,672 [2],[3],[21]   2,670 [4],[5],[6]          
Investment, Identifier [Axis]: Premium Invest, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   9,849 [2],[3],[8],[11],[17]   9,849 [2],[3],[8],[11],[17]   8,750 [5],[6],[10],[12],[18]          
Cost   8,897 [2],[3],[8],[11],[17]   8,897 [2],[3],[8],[11],[17]   8,879 [5],[6],[10],[12],[18]          
Investment, Identifier [Axis]: Preqin MC Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [5],[6],[10],[23]           2,789          
Cost [5],[6],[10],[23]           2,740          
Investment, Identifier [Axis]: Pro-Vision Solutions Holdings, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   7,642 [1],[2],[3]   7,642 [1],[2],[3]   7,662 [4],[5],[6]          
Cost   7,627 [1],[2],[3]   7,627 [1],[2],[3]   7,656 [4],[5],[6]          
Investment, Identifier [Axis]: Pro-Vision Solutions Holdings, LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   236 [3],[13]   236 [3],[13]   249 [6],[14]          
Cost   236 [3],[13]   236 [3],[13]   236 [6],[14]          
Investment, Identifier [Axis]: Pro-Vision Solutions Holdings, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   226 [1],[2],[3],[11]   226 [1],[2],[3],[11]   (28) [4],[5],[6],[12]          
Cost   223 [1],[2],[3],[11]   223 [1],[2],[3],[11]   (29) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Process Equipment, Inc. (ProcessBarron), First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,177 [2],[3],[22]   5,177 [2],[3],[22]   5,338 [5],[6],[23]          
Cost   5,304 [2],[3],[22]   5,304 [2],[3],[22]   5,335 [5],[6],[23]          
Investment, Identifier [Axis]: Process Insights Acquisition, Inc., Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   147 [3],[13]   147 [3],[13]   237 [6],[14]          
Cost   281 [3],[13]   281 [3],[13]   281 [6],[14]          
Investment, Identifier [Axis]: Process Insights Acquisition, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,285 [2],[3],[11],[21]   5,285 [2],[3],[11],[21]   5,134 [4],[5],[6],[12]          
Cost   5,612 [2],[3],[11],[21]   5,612 [2],[3],[11],[21]   5,157 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Process Insights Acquisition, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   506 [2],[3],[11],[21]   506 [2],[3],[11],[21]   889 [4],[5],[6],[12]          
Cost   560 [2],[3],[11],[21]   560 [2],[3],[11],[21]   891 [4],[5],[6],[12]          
Investment, Identifier [Axis]: ProfitOptics, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,604 [1],[2],[3]   1,604 [1],[2],[3]   1,613 [5],[6],[20]          
Cost   1,589 [1],[2],[3]   1,589 [1],[2],[3]   1,595 [5],[6],[20]          
Investment, Identifier [Axis]: ProfitOptics, LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   380 [3],[13]   380 [3],[13]   198 [6],[14]          
Cost   161 [3],[13]   161 [3],[13]   161 [6],[14]          
Investment, Identifier [Axis]: ProfitOptics, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   177 [1],[2],[3],[11]   177 [1],[2],[3],[11]   242 [5],[6],[12],[20]          
Cost   173 [1],[2],[3],[11]   173 [1],[2],[3],[11]   237 [5],[6],[12],[20]          
Investment, Identifier [Axis]: ProfitOptics, LLC, Senior Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   77 [3]   77 [3]   76 [6]          
Cost   81 [3]   81 [3]   81 [6]          
Investment, Identifier [Axis]: Proppants Holding, LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value [6],[16]           0          
Cost [6],[16]           0          
Investment, Identifier [Axis]: Protego Bidco B.V., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,917 [2],[3],[8],[26]   1,917 [2],[3],[8],[26]   1,646 [5],[6],[10],[25]          
Cost   1,893 [2],[3],[8],[26]   1,893 [2],[3],[8],[26]   1,889 [5],[6],[10],[25]          
Investment, Identifier [Axis]: Protego Bidco B.V., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   2,299 [2],[3],[8],[26]   2,299 [2],[3],[8],[26]   1,974 [5],[6],[10],[25]          
Cost   2,294 [2],[3],[8],[26]   2,294 [2],[3],[8],[26]   2,290 [5],[6],[10],[25]          
Investment, Identifier [Axis]: QPE7 SPV1 BidCo Pty Ltd, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,794 [2],[3],[8],[57]   1,794 [2],[3],[8],[57]   1,694 [5],[6],[10],[58]          
Cost   1,978 [2],[3],[8],[57]   1,978 [2],[3],[8],[57]   1,976 [5],[6],[10],[58]          
Investment, Identifier [Axis]: Qualified Industries, LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   76 [3],[13]   76 [3],[13]   61 [6],[14]          
Cost   3 [3],[13]   3 [3],[13]   3 [6],[14]          
Investment, Identifier [Axis]: Qualified Industries, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,590 [2],[3],[21]   2,590 [2],[3],[21]   2,567 [5],[6],[23]          
Cost   2,561 [2],[3],[21]   2,561 [2],[3],[21]   2,566 [5],[6],[23]          
Investment, Identifier [Axis]: Qualified Industries, LLC, Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value   184 [3],[13]   184 [3],[13]   175 [6],[14]          
Cost   144 [3],[13]   144 [3],[13]   144 [6],[14]          
Investment, Identifier [Axis]: Qualified Industries, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (1) [2],[3],[11],[21]   (1) [2],[3],[11],[21]   (5) [5],[6],[12],[23]          
Cost   (5) [2],[3],[11],[21]   (5) [2],[3],[11],[21]   (5) [5],[6],[12],[23]          
Investment, Identifier [Axis]: Questel Unite, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[6],[10]           7,059          
Cost [4],[5],[6],[10]           7,010          
Investment, Identifier [Axis]: R1 Holdings, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,104 [2],[3],[22]   6,104 [2],[3],[22]   6,135 [5],[6],[20]          
Cost   5,959 [2],[3],[22]   5,959 [2],[3],[22]   5,973 [5],[6],[20]          
Investment, Identifier [Axis]: R1 Holdings, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   1,854 [2],[3],[11],[22]   1,854 [2],[3],[11],[22]   472 [5],[6],[12],[20]          
Cost   1,813 [2],[3],[11],[22]   1,813 [2],[3],[11],[22]   425 [5],[6],[12],[20]          
Investment, Identifier [Axis]: RA Outdoors, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   8,799 [2],[3],[15],[22]   8,799 [2],[3],[15],[22]   12,732 [4],[5],[6],[16]          
Cost   14,286 [2],[3],[15],[22]   14,286 [2],[3],[15],[22]   13,506 [4],[5],[6],[16]          
Investment, Identifier [Axis]: RA Outdoors, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   841 [2],[3],[15],[22]   841 [2],[3],[15],[22]   1,217 [4],[5],[6],[16]          
Cost   1,391 [2],[3],[15],[22]   1,391 [2],[3],[15],[22]   1,316 [4],[5],[6],[16]          
Investment, Identifier [Axis]: REP SEKO MERGER SUB LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   3,118 [3],[13]   3,118 [3],[13]   4,595 [6],[14]          
Cost   5,403 [3],[13]   5,403 [3],[13]   5,403 [6],[14]          
Investment, Identifier [Axis]: REP SEKO MERGER SUB LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,610 [2],[3],[21]   2,610 [2],[3],[21]   1,015 [4],[5],[6]          
Cost   2,610 [2],[3],[21]   2,610 [2],[3],[21]   995 [4],[5],[6]          
Investment, Identifier [Axis]: REP SEKO MERGER SUB LLC, First Out Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,036 [2],[3],[21]   1,036 [2],[3],[21]   2,577 [4],[5],[6]          
Cost   1,018 [2],[3],[21]   1,018 [2],[3],[21]   2,577 [4],[5],[6]          
Investment, Identifier [Axis]: RKD Group, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[11],[21]   12,068   12,068              
Cost [2],[3],[11],[21]   12,070   12,070              
Investment, Identifier [Axis]: RKD Group, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[11],[21]   (12)   (12)              
Cost [2],[3],[11],[21]   (12)   (12)              
Investment, Identifier [Axis]: ROI Solutions LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   17,978 [2],[3],[11],[22]   17,978 [2],[3],[11],[22]   17,973 [4],[5],[6],[12]          
Cost   17,930 [2],[3],[11],[22]   17,930 [2],[3],[11],[22]   17,989 [4],[5],[6],[12]          
Investment, Identifier [Axis]: ROI Solutions LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (41) [2],[3],[11],[22]   (41) [2],[3],[11],[22]   (55) [4],[5],[6],[12]          
Cost   (47) [2],[3],[11],[22]   (47) [2],[3],[11],[22]   (52) [4],[5],[6],[12]          
Investment, Identifier [Axis]: RPX Corporation, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   21,582 [1],[2],[3]   21,582 [1],[2],[3]   21,638 [4],[5],[6]          
Cost   21,521 [1],[2],[3]   21,521 [1],[2],[3]   21,608 [4],[5],[6]          
Investment, Identifier [Axis]: RPX Corporation, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (32) [1],[2],[3],[11]   (32) [1],[2],[3],[11]   (39) [4],[5],[6],[12]          
Cost   (39) [1],[2],[3],[11]   (39) [1],[2],[3],[11]   (42) [4],[5],[6],[12]          
Investment, Identifier [Axis]: RTIC Subsidiary Holdings, LLC, Class A Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[13],[15]   0 [3],[13],[15]   0 [6],[14],[16]          
Cost   4 [3],[13],[15]   4 [3],[13],[15]   4 [6],[14],[16]          
Investment, Identifier [Axis]: RTIC Subsidiary Holdings, LLC, Class B Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[13],[15]   0 [3],[13],[15]   0 [6],[14],[16]          
Cost   0 [3],[13],[15]   0 [3],[13],[15]   0 [6],[14],[16]          
Investment, Identifier [Axis]: RTIC Subsidiary Holdings, LLC, Class C Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value   47 [3],[13],[15]   47 [3],[13],[15]   57 [6],[14],[16]          
Cost   450 [3],[13],[15]   450 [3],[13],[15]   450 [6],[14],[16]          
Investment, Identifier [Axis]: RTIC Subsidiary Holdings, LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[13],[15]   0 [3],[13],[15]   0 [6],[14],[16]          
Cost   0 [3],[13],[15]   0 [3],[13],[15]   0 [6],[14],[16]          
Investment, Identifier [Axis]: Randys Holdings, Inc., Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value [3],[13]   677   677              
Cost [3],[13]   533   533              
Investment, Identifier [Axis]: Randys Holdings, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   12,007 [2],[3],[11],[21]   12,007 [2],[3],[11],[21]   10,873 [4],[5],[6],[12]          
Cost   11,799 [2],[3],[11],[21]   11,799 [2],[3],[11],[21]   10,758 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Randys Holdings, Inc., Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value [6],[14]           622          
Cost [6],[14]           533          
Investment, Identifier [Axis]: Randys Holdings, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   1,140 [2],[3],[11],[21]   1,140 [2],[3],[11],[21]   613 [4],[5],[6],[12]          
Cost   1,111 [2],[3],[11],[21]   1,111 [2],[3],[11],[21]   597 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Rapid Buyer LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,342 [2],[3],[11],[21]   5,342 [2],[3],[11],[21]   5,313 [5],[6],[12],[23]          
Cost   5,341 [2],[3],[11],[21]   5,341 [2],[3],[11],[21]   5,321 [5],[6],[12],[23]          
Investment, Identifier [Axis]: Rapid Buyer LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   486 [3],[13]   486 [3],[13]   533 [6],[14]          
Cost   533 [3],[13]   533 [3],[13]   533 [6],[14]          
Investment, Identifier [Axis]: Rapid Buyer LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (17) [2],[3],[11],[21]   (17) [2],[3],[11],[21]   (22) [4],[5],[6],[12]          
Cost   (17) [2],[3],[11],[21]   (17) [2],[3],[11],[21]   (21) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Real Chemistry Intermediate III, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [1],[2],[3],[11]   8,684   8,684              
Cost [1],[2],[3],[11]   8,695   8,695              
Investment, Identifier [Axis]: Real Chemistry Intermediate III, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [1],[2],[3],[11]   (12)   (12)              
Cost [1],[2],[3],[11]   (11)   (11)              
Investment, Identifier [Axis]: Recovery Point Systems, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   11,235 [2],[3],[21]   11,235 [2],[3],[21]   11,294 [4],[5],[6]          
Cost   11,192 [2],[3],[21]   11,192 [2],[3],[21]   11,232 [4],[5],[6]          
Investment, Identifier [Axis]: Recovery Point Systems, Inc., Partnership Equity                      
Schedule of Investments [Line Items]                      
Fair Value   88 [3],[13]   88 [3],[13]   81 [6],[14]          
Cost   187 [3],[13]   187 [3],[13]   187 [6],[14]          
Investment, Identifier [Axis]: Renovation Parent Holdings, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,389 [2],[3],[21]   4,389 [2],[3],[21]   4,308 [4],[5],[6]          
Cost   4,637 [2],[3],[21]   4,637 [2],[3],[21]   4,651 [4],[5],[6]          
Investment, Identifier [Axis]: Renovation Parent Holdings, LLC, Partnership Equity                      
Schedule of Investments [Line Items]                      
Fair Value   95 [3],[13]   95 [3],[13]   85 [6],[14]          
Cost   202 [3],[13]   202 [3],[13]   202 [6],[14]          
Investment, Identifier [Axis]: Resolute Investment Managers, Inc., Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[13],[15]   0 [3],[13],[15]   98 [6],[14],[16]          
Cost   0 [3],[13],[15]   0 [3],[13],[15]   0 [6],[14],[16]          
Investment, Identifier [Axis]: Rhondda Financing No. 1 DAC, Structured - Junior Note                      
Schedule of Investments [Line Items]                      
Fair Value [6],[10],[12]           26,044          
Cost [6],[10],[12]           25,713          
Investment, Identifier [Axis]: Riedel Beheer B.V., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,086 [2],[3],[8],[17]   2,086 [2],[3],[8],[17]   1,963 [5],[6],[10],[18]          
Cost   2,269 [2],[3],[8],[17]   2,269 [2],[3],[8],[17]   2,265 [5],[6],[10],[18]          
Investment, Identifier [Axis]: Rocade Holdings LLC, Common LP Units                      
Schedule of Investments [Line Items]                      
Fair Value   1,019 [3]   1,019 [3]   243 [6],[14],[46] 844 [46]        
Cost   0 [3]   0 [3]   0 [6],[14]          
Investment, Identifier [Axis]: Rocade Holdings LLC, Preferred LP Units                      
Schedule of Investments [Line Items]                      
Fair Value   87,292 [3],[11],[21]   87,292 [3],[11],[21]   83,000 [4],[6],[12],[46] 73,113 [46]        
Cost   87,293 [3],[11],[21]   87,293 [3],[11],[21]   82,989 [4],[6],[12]          
Investment, Identifier [Axis]: Rock Labor LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,426 [1],[2],[3]   6,426 [1],[2],[3]   6,426 [4],[5],[6]          
Cost   6,352 [1],[2],[3]   6,352 [1],[2],[3]   6,372 [4],[5],[6]          
Investment, Identifier [Axis]: Rock Labor LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   1,062 [3]   1,062 [3]   1,127 [6]          
Cost   1,252 [3]   1,252 [3]   1,252 [6]          
Investment, Identifier [Axis]: Rock Labor LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (13) [2],[3],[11],[21]   (13) [2],[3],[11],[21]   (19) [4],[5],[6],[12]          
Cost   (23) [2],[3],[11],[21]   (23) [2],[3],[11],[21]   (26) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Royal Buyer, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   8,063 [2],[3],[21]   8,063 [2],[3],[21]   8,098 [4],[5],[6]          
Cost   7,977 [2],[3],[21]   7,977 [2],[3],[21]   8,006 [4],[5],[6]          
Investment, Identifier [Axis]: Royal Buyer, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   117 [2],[3],[11],[21]   117 [2],[3],[11],[21]   (2) [4],[5],[6],[12]          
Cost   98 [2],[3],[11],[21]   98 [2],[3],[11],[21]   (22) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Ruffalo Noel Levitz, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[6]           6,792          
Cost [4],[5],[6]           9,931          
Investment, Identifier [Axis]: Ruffalo Noel Levitz, LLC, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[21],[24]   3,113   3,113              
Cost [2],[3],[21],[24]   9,931   9,931              
Investment, Identifier [Axis]: Ruffalo Noel Levitz, LLC, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [1],[2],[3]   6   6              
Cost [1],[2],[3]   6   6              
Investment, Identifier [Axis]: Ruffalo Noel Levitz, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [1],[2],[3],[11]   331   331              
Cost [1],[2],[3],[11]   331   331              
Investment, Identifier [Axis]: Russell Investments US Institutional Holdco, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   511 [2],[3],[21]   511 [2],[3],[21]   508 [4],[5],[6]          
Cost   493 [2],[3],[21]   493 [2],[3],[21]   491 [4],[5],[6]          
Investment, Identifier [Axis]: SBP Holdings LP, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   8,631 [1],[2],[3],[11]   8,631 [1],[2],[3],[11]   8,648 [5],[6],[12],[20]          
Cost   8,442 [1],[2],[3],[11]   8,442 [1],[2],[3],[11]   8,445 [5],[6],[12],[20]          
Investment, Identifier [Axis]: SBP Holdings LP, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (8) [1],[2],[3],[11]   (8) [1],[2],[3],[11]   (13) [4],[5],[6],[12]          
Cost   (38) [1],[2],[3],[11]   (38) [1],[2],[3],[11]   (44) [4],[5],[6],[12]          
Investment, Identifier [Axis]: SCP Medical Products, LLC., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[21]   4,483   4,483              
Cost [2],[3],[21]   4,483   4,483              
Investment, Identifier [Axis]: SCP Medical Products, LLC., LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value [3],[13]   53   53              
Cost [3],[13]   53   53              
Investment, Identifier [Axis]: SCP Medical Products, LLC., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[11],[21]   (5)   (5)              
Cost [2],[3],[11],[21]   (5)   (5)              
Investment, Identifier [Axis]: SISU ACQUISITIONCO., INC., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,702 [2],[3],[21]   6,702 [2],[3],[21]   6,591 [4],[5],[6],[12]          
Cost   7,218 [2],[3],[21]   7,218 [2],[3],[21]   7,236 [4],[5],[6],[12]          
Investment, Identifier [Axis]: SPATCO Energy Solutions, LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   258 [3],[13]   258 [3],[13]   280 [6],[14]          
Cost   278 [3],[13]   278 [3],[13]   274 [6],[14]          
Investment, Identifier [Axis]: SPATCO Energy Solutions, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   7,064 [2],[3],[11],[21]   7,064 [2],[3],[11],[21]   6,990 [4],[5],[6],[12]          
Cost   7,033 [2],[3],[11],[21]   7,033 [2],[3],[11],[21]   6,962 [4],[5],[6],[12]          
Investment, Identifier [Axis]: SPATCO Energy Solutions, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (16) [2],[3],[11],[21]   (16) [2],[3],[11],[21]   (18) [4],[5],[6],[12]          
Cost   (20) [2],[3],[11],[21]   (20) [2],[3],[11],[21]   (22) [4],[5],[6],[12]          
Investment, Identifier [Axis]: SSCP Pegasus Midco Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,673 [2],[3],[8],[11],[27]   6,673 [2],[3],[8],[11],[27]   4,368 [5],[6],[10],[12],[28]          
Cost   6,226 [2],[3],[8],[11],[27]   6,226 [2],[3],[8],[11],[27]   4,489 [5],[6],[10],[12],[28]          
Investment, Identifier [Axis]: SSCP Spring Bidco 3 Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,035 [2],[3],[8],[29]   1,035 [2],[3],[8],[29]   941 [5],[6],[10],[30]          
Cost   937 [2],[3],[8],[29]   937 [2],[3],[8],[29]   935 [5],[6],[10],[30]          
Investment, Identifier [Axis]: SVI International LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   643 [2],[3],[11],[21]   643 [2],[3],[11],[21]   583 [4],[5],[6],[12]          
Cost   632 [2],[3],[11],[21]   632 [2],[3],[11],[21]   577 [4],[5],[6],[12]          
Investment, Identifier [Axis]: SVI International LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   316 [3]   316 [3]   277 [6]          
Cost   208 [3]   208 [3]   208 [6]          
Investment, Identifier [Axis]: SVI International LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   40 [2],[3],[11],[21]   40 [2],[3],[11],[21]   (1) [4],[5],[6],[12]          
Cost   38 [2],[3],[11],[21]   38 [2],[3],[11],[21]   (1) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Saab Purchaser, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   8,789 [2],[3],[11],[21]   8,789 [2],[3],[11],[21]   17,592 [4],[5],[6],[12]          
Cost   8,770 [2],[3],[11],[21]   8,770 [2],[3],[11],[21]   17,596 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Saab Purchaser, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   513 [2],[3],[11],[21]   513 [2],[3],[11],[21]   (24) [4],[5],[6],[12]          
Cost   510 [2],[3],[11],[21]   510 [2],[3],[11],[21]   (23) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Safety Products Holdings, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   14,735 [2],[3],[21]   14,735 [2],[3],[21]   14,812 [4],[5],[6]          
Cost   14,663 [2],[3],[21]   14,663 [2],[3],[21]   14,716 [4],[5],[6]          
Investment, Identifier [Axis]: Safety Products Holdings, LLC, Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value   491 [3],[13]   491 [3],[13]   537 [6],[14]          
Cost   380 [3],[13]   380 [3],[13]   380 [6],[14]          
Investment, Identifier [Axis]: Sanoptis S.A.R.L., First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   4,235 [2],[3],[8],[11],[26]   4,235 [2],[3],[8],[11],[26]   3,692 [5],[6],[10],[12],[25]          
Cost   3,731 [2],[3],[8],[11],[26]   3,731 [2],[3],[8],[11],[26]   3,711 [5],[6],[10],[12],[25]          
Investment, Identifier [Axis]: Sanoptis S.A.R.L., First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   3,250 [2],[3],[8],[59]   3,250 [2],[3],[8],[59]   2,788 [5],[6],[10],[50]          
Cost   2,783 [2],[3],[8],[59]   2,783 [2],[3],[8],[59]   2,730 [5],[6],[10],[50]          
Investment, Identifier [Axis]: Sanoptis S.A.R.L., First Lien Senior Secured Term Loan 3                      
Schedule of Investments [Line Items]                      
Fair Value [5],[6],[10],[50]           46          
Cost [5],[6],[10],[50]           49          
Investment, Identifier [Axis]: Sansidor BV, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   937 [2],[3],[8],[11],[17]   937 [2],[3],[8],[11],[17]   534 [5],[6],[10],[12],[18]          
Cost   894 [2],[3],[8],[11],[17]   894 [2],[3],[8],[11],[17]   576 [5],[6],[10],[12],[18]          
Investment, Identifier [Axis]: Scaled Agile, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,542 [2],[3],[21]   1,542 [2],[3],[21]   1,605 [4],[5],[6]          
Cost   1,788 [2],[3],[21]   1,788 [2],[3],[21]   1,764 [4],[5],[6]          
Investment, Identifier [Axis]: Scaled Agile, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   289 [2],[3],[21]   289 [2],[3],[21]   302 [4],[5],[6]          
Cost   336 [2],[3],[21]   336 [2],[3],[21]   332 [4],[5],[6]          
Investment, Identifier [Axis]: Scout Bidco B.V., First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   3,563 [2],[3],[8],[26]   3,563 [2],[3],[8],[26]   3,297 [5],[6],[10],[18]          
Cost   3,367 [2],[3],[8],[26]   3,367 [2],[3],[8],[26]   3,361 [5],[6],[10],[18]          
Investment, Identifier [Axis]: Scout Bidco B.V., First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   421 [2],[3],[8],[22]   421 [2],[3],[8],[22]   442 [4],[5],[6],[10]          
Cost   443 [2],[3],[8],[22]   443 [2],[3],[8],[22]   443 [4],[5],[6],[10]          
Investment, Identifier [Axis]: Scout Bidco B.V., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   397 [2],[3],[8],[11],[26]   397 [2],[3],[8],[11],[26]   (14) [5],[6],[10],[12],[18]          
Cost   441 [2],[3],[8],[11],[26]   441 [2],[3],[8],[11],[26]   (5) [5],[6],[10],[12],[18]          
Investment, Identifier [Axis]: Screenvision, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[21]   5,106   5,106              
Cost [2],[3],[21]   5,109   5,109              
Investment, Identifier [Axis]: Screenvision, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[11],[21]   (12)   (12)              
Cost [2],[3],[11],[21]   (12)   (12)              
Investment, Identifier [Axis]: Screenvision, LLC, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[21]   32,512   32,512              
Cost [2],[3],[21]   32,547   32,547              
Investment, Identifier [Axis]: Security Holdings B.V, Bridge Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,823 [39]   6,823 [39]   6,655 [41] 6,328 [41]        
Investment, Identifier [Axis]: Security Holdings B.V, Common Stock Series A                      
Schedule of Investments [Line Items]                      
Fair Value   491 [39]   491 [39]   399 [39] 311 [41]        
Investment, Identifier [Axis]: Security Holdings B.V, Common Stock Series B                      
Schedule of Investments [Line Items]                      
Fair Value   45,928 [39]   45,928 [39]   37,296 [39] 29,080 [41]        
Investment, Identifier [Axis]: Security Holdings B.V, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   6,221 [39]   6,221 [39]   5,333 [39] 3,866 [41]        
Investment, Identifier [Axis]: Security Holdings B.V, Senior Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   11,387 [39]   11,387 [39]   11,191 [39] 10,867 [41]        
Investment, Identifier [Axis]: Security Holdings B.V, Senior Unsecured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,778 [39]   2,778 [39]   2,293 [39] 2,236 [41]        
Investment, Identifier [Axis]: Security Holdings B.V., Bridge Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,823 [3],[8],[54]   6,823 [3],[8],[54]   6,655 [6],[10],[53]          
Cost   6,823 [3],[8],[54]   6,823 [3],[8],[54]   6,655 [6],[10],[53]          
Investment, Identifier [Axis]: Security Holdings B.V., Common Stock Series A                      
Schedule of Investments [Line Items]                      
Fair Value   491 [3],[8],[13],[54]   491 [3],[8],[13],[54]   399 [6],[10],[14],[53]          
Cost   560 [3],[8],[13],[54]   560 [3],[8],[13],[54]   560 [6],[10],[14],[53]          
Investment, Identifier [Axis]: Security Holdings B.V., Common Stock Series B                      
Schedule of Investments [Line Items]                      
Fair Value   45,928 [3],[8],[54]   45,928 [3],[8],[54]   37,296 [6],[10],[14],[53]          
Cost   35,192 [3],[8],[54]   35,192 [3],[8],[54]   35,192 [6],[10],[14],[53]          
Investment, Identifier [Axis]: Security Holdings B.V., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   6,221 [3],[8],[11],[54]   6,221 [3],[8],[11],[54]   5,333 [6],[10],[12],[53]          
Cost   5,814 [3],[8],[11],[54]   5,814 [3],[8],[11],[54]   5,650 [6],[10],[12],[53]          
Investment, Identifier [Axis]: Security Holdings B.V., Senior Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   11,387 [3],[8],[54]   11,387 [3],[8],[54]   11,191 [6],[10],[53]          
Cost   11,388 [3],[8],[54]   11,388 [3],[8],[54]   11,191 [6],[10],[53]          
Investment, Identifier [Axis]: Security Holdings B.V., Senior Unsecured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,778 [3],[8],[54]   2,778 [3],[8],[54]   2,293 [6],[10],[53]          
Cost   2,697 [3],[8],[54]   2,697 [3],[8],[54]   2,526 [6],[10],[53]          
Investment, Identifier [Axis]: Selenium Designated Activity Company, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[8],[26]   3,159   3,159              
Cost [2],[3],[8],[26]   2,903   2,903              
Investment, Identifier [Axis]: Sereni Capital NV, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [5],[6],[10],[25]           903          
Cost [5],[6],[10],[25]           926          
Investment, Identifier [Axis]: Sereni Capital NV, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [5],[6],[10],[25]           1,524          
Cost [5],[6],[10],[25]           1,564          
Investment, Identifier [Axis]: Serta Simmons Bedding LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   884 [13]   884 [13]   655 [14]          
Cost   1,630 [13]   1,630 [13]   1,630 [14]          
Investment, Identifier [Axis]: Shelf Bidco Ltd, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   4,572 [3],[8]   4,572 [3],[8]   4,668 [6],[10]          
Cost   1,200 [3],[8]   1,200 [3],[8]   1,200 [6],[10]          
Investment, Identifier [Axis]: Shelf Bidco Ltd, Second Out Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   12,098 [2],[3],[8],[21]   12,098 [2],[3],[8],[21]   12,153 [4],[5],[6],[10]          
Cost   12,097 [2],[3],[8],[21]   12,097 [2],[3],[8],[21]   12,154 [4],[5],[6],[10]          
Investment, Identifier [Axis]: Sierra Senior Loan Strategy JV I LLC, Member Interest                      
Schedule of Investments [Line Items]                      
Fair Value [10],[16],[51]           41,453          
Cost [10],[16],[51]           48,441          
Investment, Identifier [Axis]: Sierra Senior Loan Strategy JV I LLC, Member Interest                      
Schedule of Investments [Line Items]                      
Fair Value   39,555 [8],[15],[52]   39,555 [8],[15],[52]   41,453 39,172        
Cost [8],[15],[52]   48,441   48,441              
Investment, Identifier [Axis]: Sierra Senior Loan Strategy JV LLC (Sierra JV)                      
Schedule of Investments [Line Items]                      
Total contributed capital   110,100   110,100              
Investment, Identifier [Axis]: Sinari Invest, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,139 [2],[3],[8],[11],[17]   2,139 [2],[3],[8],[11],[17]   1,858 [5],[6],[10],[12],[25]          
Cost   1,947 [2],[3],[8],[11],[17]   1,947 [2],[3],[8],[11],[17]   1,943 [5],[6],[10],[12],[25]          
Investment, Identifier [Axis]: Skyvault Holdings LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   12,320 [3],[11]   12,320 [3],[11]   3,586 [6],[12]          
Cost   12,319 [3],[11]   12,319 [3],[11]   3,586 [6],[12]          
Investment, Identifier [Axis]: Skyvault Holdings LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   12,320   12,320   3,586 [46] 0 [46]        
Investment, Identifier [Axis]: Skyvault Holdings LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   4,046 [3],[13]   4,046 [3],[13]   1,195 [6],[14]          
Cost   4,055 [3],[13]   4,055 [3],[13]   1,195 [6],[14]          
Investment, Identifier [Axis]: Skyvault Holdings LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   4,046   4,046   1,195 [46] 0 [46]        
Investment, Identifier [Axis]: SmartShift Group, Inc., Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   581 [3],[13]   581 [3],[13]   483 [6],[14]          
Cost   275 [3],[13]   275 [3],[13]   275 [6],[14]          
Investment, Identifier [Axis]: SmartShift Group, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   12,879 [2],[3],[22]   12,879 [2],[3],[22]   12,944 [4],[5],[6]          
Cost   12,697 [2],[3],[22]   12,697 [2],[3],[22]   12,732 [4],[5],[6]          
Investment, Identifier [Axis]: SmartShift Group, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [2],[3],[11],[22]   0 [2],[3],[11],[22]   0 [4],[5],[6],[12]          
Cost   (29) [2],[3],[11],[22]   (29) [2],[3],[11],[22]   (32) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Smartling, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   10,383 [2],[3],[22]   10,383 [2],[3],[22]   10,437 [4],[5],[6]          
Cost   10,292 [2],[3],[22]   10,292 [2],[3],[22]   10,328 [4],[5],[6]          
Investment, Identifier [Axis]: Smartling, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [2],[3],[11],[22]   0 [2],[3],[11],[22]   0 [4],[5],[6],[12]          
Cost   (9) [2],[3],[11],[22]   (9) [2],[3],[11],[22]   (11) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Smile Brands Group Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[21]   4,558   4,558              
Cost [2],[3],[21]   5,280   5,280              
Investment, Identifier [Axis]: Smile Brands Group Inc., First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[6]           1,230          
Cost [4],[5],[6]           1,348          
Investment, Identifier [Axis]: Smile Brands Group Inc., First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[6]           3,477          
Cost [4],[5],[6]           3,805          
Investment, Identifier [Axis]: Solo Buyer, L.P., Common Equity                      
Schedule of Investments [Line Items]                      
Fair Value   310 [3],[13]   310 [3],[13]   325 [6],[14]          
Cost   516 [3],[13]   516 [3],[13]   516 [6],[14]          
Investment, Identifier [Axis]: Solo Buyer, L.P., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   14,782 [2],[3],[21]   14,782 [2],[3],[21]   14,826 [4],[5],[6]          
Cost   14,981 [2],[3],[21]   14,981 [2],[3],[21]   15,033 [4],[5],[6]          
Investment, Identifier [Axis]: Solo Buyer, L.P., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   736 [2],[3],[11],[21]   736 [2],[3],[11],[21]   466 [4],[5],[6],[12]          
Cost   769 [2],[3],[11],[21]   769 [2],[3],[11],[21]   499 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Sonicwall US Holdings Inc, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [2],[21]   2,836   2,836              
Cost [2],[21]   2,829   2,829              
Investment, Identifier [Axis]: Sound Point CLO XX, Ltd., Subordinated Structured Notes                      
Schedule of Investments [Line Items]                      
Fair Value   19 [8],[13],[15]   19 [8],[13],[15]   61 [10],[14],[16]          
Cost   1,389 [8],[13],[15]   1,389 [8],[13],[15]   1,389 [10],[14],[16]          
Investment, Identifier [Axis]: Sparus Holdings, LLC (f/k/a Sparus Holdings, Inc.), First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,288 [2],[3],[21]   2,288 [2],[3],[21]   2,057 [5],[6],[12],[23]          
Cost   2,266 [2],[3],[21]   2,266 [2],[3],[21]   2,044 [5],[6],[12],[23]          
Investment, Identifier [Axis]: Sparus Holdings, LLC (f/k/a Sparus Holdings, Inc.), Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [2],[3],[11],[21]   0 [2],[3],[11],[21]   (1) [5],[6],[12],[23]          
Cost   (1) [2],[3],[11],[21]   (1) [2],[3],[11],[21]   (2) [5],[6],[12],[23]          
Investment, Identifier [Axis]: Spatial Business Systems LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   14,840 [1],[2],[3]   14,840 [1],[2],[3]   14,706 [4],[5],[6]          
Cost   14,636 [1],[2],[3]   14,636 [1],[2],[3]   14,695 [4],[5],[6]          
Investment, Identifier [Axis]: Spatial Business Systems LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [1],[2],[3],[11]   0 [1],[2],[3],[11]   (21) [4],[5],[6],[12]          
Cost   (19) [1],[2],[3],[11]   (19) [1],[2],[3],[11]   (22) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Starnmeer B.V., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,469 [2],[3],[8],[22]   2,469 [2],[3],[8],[22]   2,500 [5],[6],[10],[23]          
Cost   2,486 [2],[3],[8],[22]   2,486 [2],[3],[8],[22]   2,482 [5],[6],[10],[23]          
Investment, Identifier [Axis]: Superjet Buyer, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[6],[12]           17,712          
Cost [4],[5],[6],[12]           17,760          
Investment, Identifier [Axis]: Superjet Buyer, LLC, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[11],[21]   13,431   13,431              
Cost [2],[3],[11],[21]   13,462   13,462              
Investment, Identifier [Axis]: Superjet Buyer, LLC, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[21]   4,557   4,557              
Cost [2],[3],[21]   4,547   4,547              
Investment, Identifier [Axis]: Superjet Buyer, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (30) [2],[3],[11],[21]   (30) [2],[3],[11],[21]   (38) [4],[5],[6],[12]          
Cost   (25) [2],[3],[11],[21]   (25) [2],[3],[11],[21]   (29) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Swoop Intermediate III, Inc., First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [1],[2],[3],[11]   7,662   7,662              
Cost [1],[2],[3],[11]   7,677   7,677              
Investment, Identifier [Axis]: Swoop Intermediate III, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [1],[2],[3],[11]   (9)   (9)              
Cost [1],[2],[3],[11]   (9)   (9)              
Investment, Identifier [Axis]: Syniverse Holdings, Inc., Series A Preferred Equity                      
Schedule of Investments [Line Items]                      
Fair Value   10,758 [3]   10,758 [3]   10,076 [6]          
Cost   10,812 [3]   10,812 [3]   10,167 [6]          
Investment, Identifier [Axis]: TA SL Cayman Aggregator Corp., Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   91 [3],[13]   91 [3],[13]   84 [6],[14]          
Cost   50 [3],[13]   50 [3],[13]   50 [6],[14]          
Investment, Identifier [Axis]: TA SL Cayman Aggregator Corp., Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,969 [3]   2,969 [3]   2,785 [6]          
Cost   2,951 [3]   2,951 [3]   2,764 [6]          
Investment, Identifier [Axis]: TAPCO Buyer LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   13,585 [2],[3],[11],[21]   13,585 [2],[3],[11],[21]   13,517 [4],[5],[6],[12]          
Cost   13,546 [2],[3],[11],[21]   13,546 [2],[3],[11],[21]   13,523 [4],[5],[6],[12]          
Investment, Identifier [Axis]: TAPCO Buyer LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   302 [3],[13]   302 [3],[13]   252 [6],[14]          
Cost   252 [3],[13]   252 [3],[13]   252 [6],[14]          
Investment, Identifier [Axis]: TAPCO Buyer LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (35) [2],[3],[11],[21]   (35) [2],[3],[11],[21]   (44) [4],[5],[6],[12]          
Cost   (39) [2],[3],[11],[21]   (39) [2],[3],[11],[21]   (43) [4],[5],[6],[12]          
Investment, Identifier [Axis]: THG Acquisition, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,820 [1],[2],[3],[11]   4,820 [1],[2],[3],[11]   10,187 [5],[6],[12],[20]          
Cost   4,809 [1],[2],[3],[11]   4,809 [1],[2],[3],[11]   10,190 [5],[6],[12],[20]          
Investment, Identifier [Axis]: THG Acquisition, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   101 [1],[2],[3],[11]   101 [1],[2],[3],[11]   97 [5],[6],[12],[20]          
Cost   99 [1],[2],[3],[11]   99 [1],[2],[3],[11]   98 [5],[6],[12],[20]          
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   2,572 [2],[3],[21]   2,572 [2],[3],[21]   2,572 [4],[5],[6]          
Cost   2,564 [2],[3],[21]   2,564 [2],[3],[21]   2,573 [4],[5],[6]          
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   2,145 [2],[3],[21]   2,145 [2],[3],[21]   953 [4],[5],[6]          
Cost   2,127 [2],[3],[21]   2,127 [2],[3],[21]   949 [4],[5],[6]          
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., First Lien Senior Secured Term Loan 3                      
Schedule of Investments [Line Items]                      
Fair Value   9,307 [2],[3],[11],[21]   9,307 [2],[3],[11],[21]   1,192 [4],[5],[6]          
Cost   9,224 [2],[3],[11],[21]   9,224 [2],[3],[11],[21]   1,190 [4],[5],[6]          
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., First Lien Senior Secured Term Loan 4                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[6],[12]           7,837          
Cost [4],[5],[6],[12]           7,840          
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   29 [3]   29 [3]   26 [6]          
Cost   5 [3]   5 [3]   5 [6]          
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (2) [2],[3],[11],[21]   (2) [2],[3],[11],[21]   (4) [4],[5],[6],[12]          
Cost   (5) [2],[3],[11],[21]   (5) [2],[3],[11],[21]   (5) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Tank Holding Corp, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   7,787 [1],[2],[3]   7,787 [1],[2],[3]   7,792 [5],[6],[23]          
Cost   7,788 [1],[2],[3]   7,788 [1],[2],[3]   7,794 [5],[6],[23]          
Investment, Identifier [Axis]: Tank Holding Corp, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   2,994 [1],[2],[3]   2,994 [1],[2],[3]   2,868 [5],[6],[12],[20]          
Cost   2,968 [1],[2],[3]   2,968 [1],[2],[3]   2,836 [5],[6],[12],[20]          
Investment, Identifier [Axis]: Tank Holding Corp, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (10) [1],[2],[3],[11]   (10) [1],[2],[3],[11]   (12) [5],[6],[12],[23]          
Cost   (9) [1],[2],[3],[11]   (9) [1],[2],[3],[11]   (11) [5],[6],[12],[23]          
Investment, Identifier [Axis]: Tanqueray Bidco Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,802 [2],[3],[8],[11],[27]   1,802 [2],[3],[8],[11],[27]   1,643 [5],[6],[10],[12],[28]          
Cost   1,526 [2],[3],[8],[11],[27]   1,526 [2],[3],[8],[11],[27]   1,518 [5],[6],[10],[12],[28]          
Investment, Identifier [Axis]: Team Air Distributing, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [6]           35          
Cost [6]           35          
Investment, Identifier [Axis]: Team Air Distributing, LLC, Partnership Equity                      
Schedule of Investments [Line Items]                      
Fair Value   537 [3],[13]   537 [3],[13]   625 [6],[14]          
Cost   523 [3],[13]   523 [3],[13]   523 [6],[14]          
Investment, Identifier [Axis]: Team Air Distributing, LLC, Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   740 [3]   740 [3]   702 [6]          
Cost   740 [3]   740 [3]   705 [6]          
Investment, Identifier [Axis]: Technology Service Stream BidCo Pty Ltd, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   775 [2],[3],[8],[11],[31]   775 [2],[3],[8],[11],[31]   677 [5],[6],[10],[12],[19]          
Cost   807 [2],[3],[8],[11],[31]   807 [2],[3],[8],[11],[31]   725 [5],[6],[10],[12],[19]          
Investment, Identifier [Axis]: Techone B.V., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,125 [2],[3],[8],[17]   4,125 [2],[3],[8],[17]   3,609 [5],[6],[10],[18]          
Cost   3,823 [2],[3],[8],[17]   3,823 [2],[3],[8],[17]   3,816 [5],[6],[10],[18]          
Investment, Identifier [Axis]: Techone B.V., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [2],[3],[8],[11],[17]   0 [2],[3],[8],[11],[17]   (4) [5],[6],[10],[12],[18]          
Cost   (24) [2],[3],[8],[11],[17]   (24) [2],[3],[8],[11],[17]   (24) [5],[6],[10],[12],[18]          
Investment, Identifier [Axis]: Tencarva Machinery Company, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   14,032 [2],[3],[11],[21]   14,032 [2],[3],[11],[21]   8,364 [4],[5],[6]          
Cost   14,039 [2],[3],[11],[21]   14,039 [2],[3],[11],[21]   8,368 [4],[5],[6]          
Investment, Identifier [Axis]: Tencarva Machinery Company, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (26) [2],[3],[11],[21]   (26) [2],[3],[11],[21]   (18) [4],[5],[6],[12]          
Cost   (21) [2],[3],[11],[21]   (21) [2],[3],[11],[21]   (15) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Terrybear, Inc., Partnership Equity                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[13]   0 [3],[13]   120 [6],[14]          
Cost   239 [3],[13]   239 [3],[13]   239 [6],[14]          
Investment, Identifier [Axis]: Terrybear, Inc., Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   264 [3]   264 [3]   268 [6]          
Cost   288 [3]   288 [3]   282 [6]          
Investment, Identifier [Axis]: The Caprock Group, Inc. (aka TA/TCG Holdings, LLC), First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   13,689 [2],[3],[11],[21]   13,689 [2],[3],[11],[21]   2,647 [4],[5],[6]          
Cost   13,699 [2],[3],[11],[21]   13,699 [2],[3],[11],[21]   2,621 [4],[5],[6]          
Investment, Identifier [Axis]: The Caprock Group, Inc. (aka TA/TCG Holdings, LLC), Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (23) [2],[3],[11],[21]   (23) [2],[3],[11],[21]   0 [4],[5],[6],[12]          
Cost   (20) [2],[3],[11],[21]   (20) [2],[3],[11],[21]   (7) [4],[5],[6],[12]          
Investment, Identifier [Axis]: The Caprock Group, Inc. (aka TA/TCG Holdings, LLC), Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [5],[6],[23]           3,791          
Cost [5],[6],[23]           3,750          
Investment, Identifier [Axis]: The Octave Music Group, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,434 [2],[21]   3,434 [2],[21]   3,595 [4],[5]          
Cost   3,575 [2],[21]   3,575 [2],[21]   3,593 [4],[5]          
Investment, Identifier [Axis]: The Octave Music Group, Inc., Partnership Equity                      
Schedule of Investments [Line Items]                      
Fair Value   2,037 [3],[13]   2,037 [3],[13]   2,180 [6]          
Cost   677 [3],[13]   677 [3],[13]   677 [6]          
Investment, Identifier [Axis]: Thompson Rivers LLC                      
Schedule of Investments [Line Items]                      
Total contributed capital                     $ 75,000
Investment, Identifier [Axis]: Thompson Rivers LLC, Member Interest                      
Schedule of Investments [Line Items]                      
Fair Value [14],[51]           7,208          
Cost [14],[51]           22,897          
Investment, Identifier [Axis]: Thompson Rivers LLC, Member Interest                      
Schedule of Investments [Line Items]                      
Fair Value   5,534 [13],[52]   5,534 [13],[52]   7,208 13,365        
Cost [13],[52]   21,299   21,299              
Investment, Identifier [Axis]: Thompsonn Rivers LLC                      
Schedule of Investments [Line Items]                      
Total contributed capital   79,411   79,411   79,411          
Investment, Identifier [Axis]: Transportation Insight, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   8,168 [2],[3],[21]   8,168 [2],[3],[21]   8,518 [4],[5],[6]          
Cost   11,057 [2],[3],[21]   11,057 [2],[3],[21]   11,030 [4],[5],[6]          
Investment, Identifier [Axis]: Trident Maritime Systems, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   13,507 [2],[3],[21]   13,507 [2],[3],[21]   14,420 [4],[5],[6]          
Cost   15,369 [2],[3],[21]   15,369 [2],[3],[21]   15,202 [4],[5],[6]          
Investment, Identifier [Axis]: Trintech, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,786 [1],[2],[3]   6,786 [1],[2],[3]   6,787 [5],[6],[20]          
Cost   6,705 [1],[2],[3]   6,705 [1],[2],[3]   6,725 [5],[6],[20]          
Investment, Identifier [Axis]: Trintech, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   147 [1],[2],[3],[11]   147 [1],[2],[3],[11]   145 [5],[6],[12],[20]          
Cost   141 [1],[2],[3],[11]   141 [1],[2],[3],[11]   140 [5],[6],[12],[20]          
Investment, Identifier [Axis]: True Religion Apparel, Inc., Class A Units                      
Schedule of Investments [Line Items]                      
Fair Value [6],[14],[16]           0          
Cost [6],[14],[16]           0          
Investment, Identifier [Axis]: Turbo Buyer, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   7,666 [2],[3],[21]   7,666 [2],[3],[21]   7,754 [4],[5],[6]          
Cost   8,111 [2],[3],[21]   8,111 [2],[3],[21]   8,121 [4],[5],[6]          
Investment, Identifier [Axis]: Turnberry Solutions, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,849 [1],[2],[3]   4,849 [1],[2],[3]   4,874 [5],[6],[20]          
Cost   4,825 [1],[2],[3]   4,825 [1],[2],[3]   4,839 [5],[6],[20]          
Investment, Identifier [Axis]: UBC Ledgers Holding AB, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   769 [2],[3],[8],[17]   769 [2],[3],[8],[17]   536 [5],[6],[10],[18]          
Cost   709 [2],[3],[8],[17]   709 [2],[3],[8],[17]   556 [5],[6],[10],[18]          
Investment, Identifier [Axis]: UBC Ledgers Holding AB, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   1,681 [2],[3],[8],[11],[60]   1,681 [2],[3],[8],[11],[60]   1,450 [5],[6],[10],[12],[35]          
Cost   1,491 [2],[3],[8],[11],[60]   1,491 [2],[3],[8],[11],[60]   1,486 [5],[6],[10],[12],[35]          
Investment, Identifier [Axis]: UHY Advisors, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   7,811 [2],[3],[11],[21]   7,811 [2],[3],[11],[21]   12,982 [4],[5],[6],[12]          
Cost   7,678 [2],[3],[11],[21]   7,678 [2],[3],[11],[21]   12,991 [4],[5],[6],[12]          
Investment, Identifier [Axis]: UHY Advisors, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [2],[3],[11],[21]   0 [2],[3],[11],[21]   (35) [4],[5],[6],[12]          
Cost   (28) [2],[3],[11],[21]   (28) [2],[3],[11],[21]   (34) [4],[5],[6],[12]          
Investment, Identifier [Axis]: UKFast Leaders Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   12,209 [2],[3],[8],[27]   12,209 [2],[3],[8],[27]   11,041 [5],[6],[10],[28]          
Cost   11,887 [2],[3],[8],[27]   11,887 [2],[3],[8],[27]   11,860 [5],[6],[10],[28]          
Investment, Identifier [Axis]: US Bank National Association Series 2025-1, Structured Note - Class R                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[8],[21]   6,560   6,560              
Cost [2],[3],[8],[21]   6,572   6,572              
Investment, Identifier [Axis]: USLS Acquisition, Inc. (f/k/a US Legal Support, Inc.), First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   12,431 [2],[3],[21]   12,431 [2],[3],[21]   12,487 [4],[5],[6]          
Cost   12,507 [2],[3],[21]   12,507 [2],[3],[21]   12,558 [4],[5],[6]          
Investment, Identifier [Axis]: USLS Acquisition, Inc. (f/k/a US Legal Support, Inc.), First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   5,389 [2],[3],[21]   5,389 [2],[3],[21]   5,411 [4],[5],[6]          
Cost   5,395 [2],[3],[21]   5,395 [2],[3],[21]   5,414 [4],[5],[6]          
Investment, Identifier [Axis]: Union Bidco Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,087 [2],[3],[8],[11],[27]   1,087 [2],[3],[8],[11],[27]   930 [5],[6],[10],[12],[30]          
Cost   956 [2],[3],[8],[11],[27]   956 [2],[3],[8],[11],[27]   892 [5],[6],[10],[12],[30]          
Investment, Identifier [Axis]: United Therapy Holding III GmbH, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,534 [2],[3],[8],[11],[26]   1,534 [2],[3],[8],[11],[26]   1,204 [5],[6],[10],[12],[18]          
Cost   1,884 [2],[3],[8],[11],[26]   1,884 [2],[3],[8],[11],[26]   1,713 [5],[6],[10],[12],[18]          
Investment, Identifier [Axis]: Unither (Uniholding), First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,225 [2],[3],[8],[11],[17]   2,225 [2],[3],[8],[11],[17]   1,962 [5],[6],[10],[12],[18]          
Cost   1,970 [2],[3],[8],[11],[17]   1,970 [2],[3],[8],[11],[17]   1,965 [5],[6],[10],[12],[18]          
Investment, Identifier [Axis]: Unosquare, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [1],[2],[3],[11]   6,039   6,039              
Cost [1],[2],[3],[11]   6,039   6,039              
Investment, Identifier [Axis]: Unosquare, LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value [3],[13]   261   261              
Cost [3],[13]   261   261              
Investment, Identifier [Axis]: Unosquare, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [1],[2],[3],[11]   (20)   (20)              
Cost [1],[2],[3],[11]   (20)   (20)              
Investment, Identifier [Axis]: Utac Ceram, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   1,792 [2],[3],[8],[17]   1,792 [2],[3],[8],[17]   1,500 [5],[6],[10],[18]          
Cost   1,801 [2],[3],[8],[17]   1,801 [2],[3],[8],[17]   1,754 [5],[6],[10],[18]          
Investment, Identifier [Axis]: Utac Ceram, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   3,558 [2],[3],[8],[21]   3,558 [2],[3],[8],[21]   2,471 [4],[5],[6],[10]          
Cost   3,618 [2],[3],[8],[21]   3,618 [2],[3],[8],[21]   2,572 [4],[5],[6],[10]          
Investment, Identifier [Axis]: Utac Ceram, First Lien Senior Secured Term Loan 3                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[6],[10]           943          
Cost [4],[5],[6],[10]           994          
Investment, Identifier [Axis]: VB Spine Intermediary II LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[21]   43,527   43,527              
Cost [2],[3],[21]   43,614   43,614              
Investment, Identifier [Axis]: VB Spine Intermediary II LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value [3],[13]   0   0              
Cost [3],[13]   0   0              
Investment, Identifier [Axis]: VOYA CLO 2015-2, LTD., Subordinated Structured Notes                      
Schedule of Investments [Line Items]                      
Fair Value   51 [8],[13],[15]   51 [8],[13],[15]   15 [10],[14],[16]          
Cost   2,434 [8],[13],[15]   2,434 [8],[13],[15]   2,496 [10],[14],[16]          
Investment, Identifier [Axis]: VOYA CLO 2016-2, LTD., Subordinated Structured Notes                      
Schedule of Investments [Line Items]                      
Fair Value   7 [8],[13],[15]   7 [8],[13],[15]   1,072 [10],[14],[16]          
Cost   673 [8],[13],[15]   673 [8],[13],[15]   2,462 [10],[14],[16]          
Investment, Identifier [Axis]: Validity, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [5],[6],[20]           4,783          
Cost [5],[6],[20]           4,750          
Investment, Identifier [Axis]: Velocity Pooling Vehicle, LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   2 [3],[13],[15]   2 [3],[13],[15]   2 [6],[14],[16]          
Cost   60 [3],[13],[15]   60 [3],[13],[15]   60 [6],[14],[16]          
Investment, Identifier [Axis]: Velocity Pooling Vehicle, LLC, Warrants                      
Schedule of Investments [Line Items]                      
Fair Value   3 [3],[13],[15]   3 [3],[13],[15]   3 [6],[14],[16]          
Cost   72 [3],[13],[15]   72 [3],[13],[15]   72 [6],[14],[16]          
Investment, Identifier [Axis]: Victoria Bidco Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,071 [2],[3],[8],[29]   4,071 [2],[3],[8],[29]   3,787 [5],[6],[10],[30]          
Cost   4,090 [2],[3],[8],[29]   4,090 [2],[3],[8],[29]   4,081 [5],[6],[10],[30]          
Investment, Identifier [Axis]: Vision Solutions Inc., Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,988 [2],[15],[21]   5,988 [2],[15],[21]   6,256 [4],[5],[16]          
Cost   6,497 [2],[15],[21]   6,497 [2],[15],[21]   6,497 [4],[5],[16]          
Investment, Identifier [Axis]: Vista Global Holding Ltd, Structured Secured Note - Class C                      
Schedule of Investments [Line Items]                      
Fair Value   493 [8]   493 [8]   495 [6],[10]          
Cost   500 [8]   500 [8]   500 [6],[10]          
Investment, Identifier [Axis]: VistaJet Pass Through Trust 2021-1B, Structured Secured Note - Class B                      
Schedule of Investments [Line Items]                      
Fair Value   2,759   2,759   3,160 [6]          
Cost   2,857   2,857   3,214 [6]          
Investment, Identifier [Axis]: Vital Buyer, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   17,814 [2],[3],[21]   17,814 [2],[3],[21]   7,241 [4],[5],[6]          
Cost   17,824 [2],[3],[21]   17,824 [2],[3],[21]   7,249 [4],[5],[6]          
Investment, Identifier [Axis]: Vital Buyer, LLC, Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   395 [3]   395 [3]   388 [6]          
Cost   164 [3]   164 [3]   164 [6]          
Investment, Identifier [Axis]: W2O Holdings, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[6]           11,772          
Cost [4],[5],[6]           11,803          
Investment, Identifier [Axis]: WEST-NR ACQUISITIONCO, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[11],[21]   10,750   10,750              
Cost [2],[3],[11],[21]   10,694   10,694              
Investment, Identifier [Axis]: WEST-NR ACQUISITIONCO, LLC, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[6],[12]           2,502          
Cost [4],[5],[6],[12]           2,500          
Investment, Identifier [Axis]: WEST-NR ACQUISITIONCO, LLC, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[6]           5,959          
Cost [4],[5],[6]           5,957          
Investment, Identifier [Axis]: WEST-NR ACQUISITIONCO, LLC, First Lien Senior Secured Term Loan 3                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[6],[12]           1,816          
Cost [4],[5],[6],[12]           1,809          
Investment, Identifier [Axis]: WWEC Holdings III Corp, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   12,003 [2],[3],[21]   12,003 [2],[3],[21]   12,050 [4],[5],[6]          
Cost   11,990 [2],[3],[21]   11,990 [2],[3],[21]   11,997 [4],[5],[6]          
Investment, Identifier [Axis]: WWEC Holdings III Corp, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (32) [2],[3],[11],[21]   (32) [2],[3],[11],[21]   (35) [4],[5],[6],[12]          
Cost   (34) [2],[3],[11],[21]   (34) [2],[3],[11],[21]   (35) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Waccamaw River LLC                      
Schedule of Investments [Line Items]                      
Total contributed capital   30,280   30,280   30,280       $ 25,000  
Investment, Identifier [Axis]: Waccamaw River LLC, Member Interest                      
Schedule of Investments [Line Items]                      
Fair Value [10],[51]           10,730          
Cost [10],[51]           22,913          
Investment, Identifier [Axis]: Waccamaw River LLC, Member Interest                      
Schedule of Investments [Line Items]                      
Fair Value   7,128 [8],[52]   7,128 [8],[52]   10,730 $ 15,470        
Cost [8],[52]   19,584   19,584              
Investment, Identifier [Axis]: Whitcraft Holdings, Inc., First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   2,966 [2],[3],[11],[21]   2,966 [2],[3],[11],[21]   1,802 [4],[5],[6]          
Cost   2,993 [2],[3],[11],[21]   2,993 [2],[3],[11],[21]   1,825 [4],[5],[6]          
Investment, Identifier [Axis]: Whitcraft Holdings, Inc., First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   8,482 [2],[3],[21]   8,482 [2],[3],[21]   (36) [4],[5],[6],[12]          
Cost   8,247 [2],[3],[21]   8,247 [2],[3],[21]   (39) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Whitcraft Holdings, Inc., First Lien Senior Secured Term Loan 3                      
Schedule of Investments [Line Items]                      
Fair Value [5],[6],[20]           8,525          
Cost [5],[6],[20]           8,265          
Investment, Identifier [Axis]: Whitcraft Holdings, Inc., LP Units                      
Schedule of Investments [Line Items]                      
Fair Value   972 [3],[13]   972 [3],[13]   975 [6],[14]          
Cost   631 [3],[13]   631 [3],[13]   631 [6],[14]          
Investment, Identifier [Axis]: Whitcraft Holdings, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   352 [2],[3],[11],[21]   352 [2],[3],[11],[21]   993 [5],[6],[12],[20]          
Cost   306 [2],[3],[11],[21]   306 [2],[3],[11],[21]   941 [5],[6],[12],[20]          
Investment, Identifier [Axis]: White Bidco Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,742 [2],[3],[8],[11],[21]   1,742 [2],[3],[8],[11],[21]   1,747 [4],[5],[6],[10],[12]          
Cost   1,699 [2],[3],[8],[11],[21]   1,699 [2],[3],[8],[11],[21]   1,695 [4],[5],[6],[10],[12]          
Investment, Identifier [Axis]: Woodland Foods, LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   1,481 [3],[13]   1,481 [3],[13]   1,271 [6],[14]          
Cost   1,663 [3],[13]   1,663 [3],[13]   1,663 [6],[14]          
Investment, Identifier [Axis]: Woodland Foods, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   15,493 [2],[3],[11],[21]   15,493 [2],[3],[11],[21]   6,097 [4],[5],[6]          
Cost   15,521 [2],[3],[11],[21]   15,521 [2],[3],[11],[21]   6,092 [4],[5],[6]          
Investment, Identifier [Axis]: Woodland Foods, LLC, Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value [6]           427          
Cost [6]           427          
Investment, Identifier [Axis]: Woodland Foods, LLC, Preferred Stock 1                      
Schedule of Investments [Line Items]                      
Fair Value [3]   470   470              
Cost [3]   470   470              
Investment, Identifier [Axis]: Woodland Foods, LLC, Preferred Stock 2                      
Schedule of Investments [Line Items]                      
Fair Value [3]   130   130              
Cost [3]   130   130              
Investment, Identifier [Axis]: Woodland Foods, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   507 [2],[3],[11],[21]   507 [2],[3],[11],[21]   1,043 [4],[5],[6],[12]          
Cost   519 [2],[3],[11],[21]   519 [2],[3],[11],[21]   1,041 [4],[5],[6],[12]          
Investment, Identifier [Axis]: World 50, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   13,827 [2],[3],[21]   13,827 [2],[3],[21]   13,785 [5],[6],[20]          
Cost   13,594 [2],[3],[21]   13,594 [2],[3],[21]   13,645 [5],[6],[20]          
Investment, Identifier [Axis]: World 50, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [2],[3],[11],[21]   0 [2],[3],[11],[21]   (8) [5],[6],[12],[20]          
Cost   (15) [2],[3],[11],[21]   (15) [2],[3],[11],[21]   (17) [5],[6],[12],[20]          
Investment, Identifier [Axis]: Xeinadin Bidco Limited, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   626 [3],[8],[13]   626 [3],[8],[13]   572 [6],[10],[14]          
Cost   565 [3],[8],[13]   565 [3],[8],[13]   565 [6],[10],[14]          
Investment, Identifier [Axis]: Xeinadin Bidco Limited, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   327 [2],[3],[8],[26]   327 [2],[3],[8],[26]   283 [5],[6],[10],[25]          
Cost   305 [2],[3],[8],[26]   305 [2],[3],[8],[26]   305 [5],[6],[10],[25]          
Investment, Identifier [Axis]: Xeinadin Bidco Limited, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   9,605 [2],[3],[8],[11],[29]   9,605 [2],[3],[8],[11],[29]   8,598 [5],[6],[10],[30]          
Cost   8,675 [2],[3],[8],[11],[29]   8,675 [2],[3],[8],[11],[29]   8,657 [5],[6],[10],[30]          
Investment, Identifier [Axis]: Xeinadin Bidco Limited, Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,117 [3],[8]   4,117 [3],[8]   3,691 [6],[10]          
Cost   3,811 [3],[8]   3,811 [3],[8]   3,691 [6],[10]          
Investment, Identifier [Axis]: ZB Holdco LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[6]           9,053          
Cost [4],[5],[6]           9,057          
Investment, Identifier [Axis]: ZB Holdco LLC, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[11],[21]   9,428   9,428              
Cost [2],[3],[11],[21]   9,430   9,430              
Investment, Identifier [Axis]: ZB Holdco LLC, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[11],[21]   (22)   (22)              
Cost [2],[3],[11],[21]   (19)   (19)              
Investment, Identifier [Axis]: ZB Holdco LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   223 [3],[13]   223 [3],[13]   197 [6],[14]          
Cost   121 [3],[13]   121 [3],[13]   153 [6],[14]          
Investment, Identifier [Axis]: ZB Holdco LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   904 [2],[3],[11],[21]   904 [2],[3],[11],[21]   495 [4],[5],[6],[12]          
Cost   908 [2],[3],[11],[21]   908 [2],[3],[11],[21]   498 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Zeppelin Bidco Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,613 [2],[3],[8],[24],[29]   2,613 [2],[3],[8],[24],[29]   4,691 [5],[6],[10],[30]          
Cost   6,645 [2],[3],[8],[24],[29]   6,645 [2],[3],[8],[24],[29]   6,256 [5],[6],[10],[30]          
Investment, Identifier [Axis]: eShipping, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,135 [1],[2],[3]   3,135 [1],[2],[3]   3,465 [5],[6],[20]          
Cost   3,110 [1],[2],[3]   3,110 [1],[2],[3]   3,431 [5],[6],[20]          
Investment, Identifier [Axis]: eShipping, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [1],[2],[3],[11]   0 [1],[2],[3],[11]   0 [5],[6],[12],[20]          
Cost   (12) [1],[2],[3],[11]   (12) [1],[2],[3],[11]   (14) [5],[6],[12],[20]          
All Members Of Sierra JV | Investment, Identifier [Axis]: Sierra Senior Loan Strategy JV LLC (Sierra JV)                      
Schedule of Investments [Line Items]                      
Total contributed capital   124,500   124,500              
MMALIC | Investment, Identifier [Axis]: Sierra Senior Loan Strategy JV LLC (Sierra JV)                      
Schedule of Investments [Line Items]                      
Total contributed capital   14,500   14,500              
Sierra JV                      
Schedule of Investments [Line Items]                      
Dividends   2,000 500 4,000 1,000            
Total dividend income   1,800 $ 400 3,500 $ 900            
Fair Value   18,094   18,094   33,422          
Cost   $ 20,671   $ 20,671   $ 36,083          
Weighted average yield   9.60%   9.60%   9.40%          
MassMutual Ascend Life Insurance Company                      
Schedule of Investments [Line Items]                      
Number of members | member 2                    
All Members Of Sierra JV                      
Schedule of Investments [Line Items]                      
Number of members | member 4                    
[1] The interest rate on these loans is subject to 1 Month SOFR, which as of June 30, 2025 was 4.32229%.
[2] Debt investment includes interest rate floor feature.
[3] The fair value of the investment was determined using significant unobservable inputs.
[4] The interest rate on these loans is subject to 3 Month SOFR, which as of December 31, 2024 was 4.30510%.
[5] Debt investment includes interest rate floor feature.
[6] The fair value of the investment was determined using significant unobservable inputs.
[7] PIK non-accrual investment.
[8] Investment is not a qualifying investment as defined under Section 55(a) of the 1940 Act. Non-qualifying assets represent 24.4% of total investments at fair value as of June 30, 2025. Qualifying assets must represent at least 70% of total assets at the time of acquisition of any additional non-qualifying assets. If at any time qualifying assets do not represent at least 70% of the Company’s total assets, the Company will be precluded from acquiring any additional non-qualifying asset until such time as it complies with the requirements of Section 55(a).
[9] PIK non-accrual investment.
[10] Investment is not a qualifying investment as defined under Section 55(a) of the 1940 Act. Non-qualifying assets represent 26.1% of total investments at fair value as of December 31, 2024. Qualifying assets must represent at least 70% of total assets at the time of acquisition of any additional non-qualifying assets. If at any time qualifying assets do not represent at least 70% of the Company’s total assets, the Company will be precluded from acquiring any additional non-qualifying asset until such time as it complies with the requirements of Section 55(a).
[11] Position or portion thereof is an unfunded loan or equity commitment.
[12] Position or portion thereof is an unfunded loan or equity commitment.
[13] Investment is non-income producing.
[14] Investment is non-income producing.
[15] Investment was purchased as part of the Sierra Merger and is part of the Sierra Reference Portfolio for purposes of the Sierra Credit Support Agreement.
[16] Investment was purchased as part of the Sierra Merger and is part of the Sierra Reference Portfolio for purposes of the Sierra Credit Support Agreement.
[17] The interest rate on these loans is subject to 3 Month EURIBOR, which as of June 30, 2025 was 1.94400%.
[18] The interest rate on these loans is subject to 3 Month EURIBOR, which as of December 31, 2024 was 2.71400%.
[19] The interest rate on these loans is subject to 6 Month BBSY, which as of December 31, 2024 was 4.49250%.
[20] The interest rate on these loans is subject to 1 Month SOFR, which as of December 31, 2024 was 4.33249%.
[21] The interest rate on these loans is subject to 3 Month SOFR, which as of June 30, 2025 was 4.29235%.
[22] The interest rate on these loans is subject to 6 Month SOFR, which as of June 30, 2025 was 4.14656%.
[23] The interest rate on these loans is subject to 6 Month SOFR, which as of December 31, 2024 was 4.25001%.
[24] Non-accrual investment.
[25] The interest rate on these loans is subject to 6 Month EURIBOR, which as of December 31, 2024 was 2.56800%.
[26] The interest rate on these loans is subject to 6 Month EURIBOR, which as of June 30, 2025 was 2.04900%.
[27] The interest rate on these loans is subject to 3 Month SONIA, which as of June 30, 2025 was 4.10460%.
[28] The interest rate on these loans is subject to 3 Month SONIA, which as of December 31, 2024 was 4.62330%.
[29] The interest rate on these loans is subject to 6 Month SONIA, which as of June 30, 2025 was 3.99300%.
[30] The interest rate on these loans is subject to 6 Month SONIA, which as of December 31, 2024 was 4.56370%.
[31] The interest rate on these loans is subject to 3 Month BBSY, which as of June 30, 2025 was 3.60370%.
[32] The interest rate on these loans is subject to 3 Month BBSY, which as of December 31, 2024 was 4.41630%.
[33] The interest rate on these loans is subject to 1 Month EURIBOR, which as of June 30, 2025 was 1.93400%.
[34] The interest rate on these loans is subject to 1 Month EURIBOR, which as of December 31, 2024 was 2.84500%.
[35] The interest rate on these loans is subject to 3 Month STIBOR, which as of December 31, 2024 was 2.54200%.
[36] Non-accrual investment.
[37] Non-accrual investment.
[38] Non-accrual investment.
[39] The fair value of the investment was determined using significant unobservable inputs.
[40] Non-accrual investment.
[41] The fair value of the investment was determined using significant unobservable inputs.
[42] The interest rate on these loans is subject to 1 Month SONIA, which as of June 30, 2025 was 4.22390%.
[43] The interest rate on these loans is subject to 1 Month SONIA, which as of December 31, 2024 was 4.71030%.
[44] The interest rate on these loans is subject to 3 Month CORRA, which as of June 30, 2025 was 2.75000%.
[45] The interest rate on these loans is subject to 3 Month CORRA, which as of December 31, 2024 was 3.15158%.
[46] The fair value of the investment was determined using significant unobservable inputs.
[47] The interest rate on these loans is subject to 3 Month BKBM, which as of June 30, 2025 was 3.30000%.
[48] The interest rate on these loans is subject to 3 Month BKBM, which as of December 31, 2024 was 4.27000%.
[49] The interest rate on these loans is subject to 3 Month SARON, which as of June 30, 2025 was 0.17170%
[50] The interest rate on these loans is subject to 6 Month SARON, which as of December 31, 2024 was 1.01720%.
[51] Portfolio company does not issue shares or units, member interest is based on commitments.
[52] Portfolio company does not issue shares or units, member interest is based on commitments.
[53] Investment was purchased as part of the MVC Acquisition and is part of the MVC Reference Portfolio for purposes of the MVC Credit Support Agreement.
[54] Investment was purchased from MVC Capital, Inc. (“MVC”) in connection with the MVC Acquisition (as defined in “Note 2 - Agreements and Related Party Transactions”).
[55] The interest rate on these loans is subject to 1 Month NIBOR, which as of June 30, 2025 was 4.31000%.
[56] The interest rate on these loans is subject to 1 Month NIBOR, which as of December 31, 2024 was 4.61000%.
[57] The interest rate on these loans is subject to 1 Month BBSY, which as of June 30, 2025 was 3.61250%.
[58] The interest rate on these loans is subject to 1 Month BBSY, which as of December 31, 2024 was 4.32250%.
[59] The interest rate on these loans is subject to 6 Month SARON, which as of June 30, 2025 was -0.03173%.
[60] The interest rate on these loans is subject to 3 Month STIBOR, which as of June 30, 2025 was 2.12700%.