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INVESTMENTS - Sierra Senior Loan Strategy JV I LLC (Details)
$ in Thousands
3 Months Ended 9 Months Ended
Feb. 25, 2022
member
Sep. 30, 2025
USD ($)
Sep. 30, 2024
USD ($)
Sep. 30, 2025
USD ($)
Sep. 30, 2024
USD ($)
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   $ 14,177 $ 9,841 $ 39,512 $ 30,051            
Fair Value   2,536,315 [1]   2,536,315 [1]   $ 2,449,272 [2]          
Cost   2,564,002 [1]   2,564,002 [1]   2,522,696 [2]          
Investment, Identifier [Axis]: 1WorldSync, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[5]           7,049          
Cost [3],[4],[5]           7,031          
Investment, Identifier [Axis]: A.T. Holdings II LTD, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   7,805 [6],[7],[8]   7,805 [6],[7],[8]   8,479 [5],[9],[10]          
Cost   11,875 [6],[7],[8]   11,875 [6],[7],[8]   11,875 [5],[9],[10]          
Investment, Identifier [Axis]: AD Bidco, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   12,982 [8],[11],[12],[13]   12,982 [8],[11],[12],[13]   10,099 [3],[4],[5],[14]          
Cost   12,878 [8],[11],[12],[13]   12,878 [8],[11],[12],[13]   9,794 [3],[4],[5],[14]          
Investment, Identifier [Axis]: AD Bidco, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (16) [8],[11],[12],[13]   (16) [8],[11],[12],[13]   0 [3],[4],[5],[14]          
Cost   (24) [8],[11],[12],[13]   (24) [8],[11],[12],[13]   (28) [3],[4],[5],[14]          
Investment, Identifier [Axis]: ADB Safegate, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[5],[10]           6,523          
Cost [3],[4],[5],[10]           7,232          
Investment, Identifier [Axis]: AIT Worldwide Logistics Holdings, Inc., Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   665 [8],[15]   665 [8],[15]   550 [5],[16]          
Cost   349 [8],[15]   349 [8],[15]   349 [5],[16]          
Investment, Identifier [Axis]: AMMC CLO 22, Limited Series 2018-22A, Subordinated Structured Notes                      
Schedule of Investments [Line Items]                      
Fair Value   0 [7],[8],[15],[17]   0 [7],[8],[15],[17]   1,733 [5],[10],[18]          
Cost   403 [7],[8],[15],[17]   403 [7],[8],[15],[17]   2,439 [5],[10],[18]          
Investment, Identifier [Axis]: APC1 Holding, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,702 [7],[8],[12],[19]   2,702 [7],[8],[12],[19]   2,370 [4],[5],[10],[20]          
Cost   2,333 [7],[8],[12],[19]   2,333 [7],[8],[12],[19]   2,324 [4],[5],[10],[20]          
Investment, Identifier [Axis]: APOG Bidco Pty Ltd, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[10],[21]           864          
Cost [4],[5],[10],[21]           1,030          
Investment, Identifier [Axis]: ASC Communications, LLC, Class A Units                      
Schedule of Investments [Line Items]                      
Fair Value   848 [8]   848 [8]   869 [5]          
Cost   539 [8]   539 [8]   539 [5]          
Investment, Identifier [Axis]: ASC Communications, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,444 [8],[12],[22]   5,444 [8],[12],[22]   7,344 [4],[5],[23]          
Cost   5,449 [8],[12],[22]   5,449 [8],[12],[22]   7,277 [4],[5],[23]          
Investment, Identifier [Axis]: ASC Communications, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (8) [8],[12],[13],[22]   (8) [8],[12],[13],[22]   0 [4],[5],[14],[23]          
Cost   (6) [8],[12],[13],[22]   (6) [8],[12],[13],[22]   (9) [4],[5],[14],[23]          
Investment, Identifier [Axis]: ATL II MRO Holdings Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   18,963 [8],[11],[12]   18,963 [8],[11],[12]   19,021 [3],[4],[5]          
Cost   18,899 [8],[11],[12]   18,899 [8],[11],[12]   18,994 [3],[4],[5]          
Investment, Identifier [Axis]: ATL II MRO Holdings Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (35) [8],[11],[12],[13]   (35) [8],[11],[12],[13]   (49) [3],[4],[5],[14]          
Cost   (41) [8],[11],[12],[13]   (41) [8],[11],[12],[13]   (50) [3],[4],[5],[14]          
Investment, Identifier [Axis]: AVSC Holding Corp., First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [4],[23]           148          
Cost [4],[23]           148          
Investment, Identifier [Axis]: AVSC Holding Corp., First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [4],[23]           2          
Cost [4],[23]           2          
Investment, Identifier [Axis]: Accelerant Holdings, Class A Convertible Preferred Equity                      
Schedule of Investments [Line Items]                      
Fair Value [5],[16]           6,347          
Cost [5],[16]           5,000          
Investment, Identifier [Axis]: Accelerant Holdings, Class B Convertible Preferred Equity                      
Schedule of Investments [Line Items]                      
Fair Value [5],[16]           2,285          
Cost [5],[16]           1,667          
Investment, Identifier [Axis]: Accelerant Holdings, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value [15]   3,742   3,742              
Cost [15]   3,341   3,341              
Investment, Identifier [Axis]: Accelerant Holdings, Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value [5],[16]           7,840          
Cost [5],[16]           7,840          
Investment, Identifier [Axis]: Accelevation LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8],[12],[13],[22]   595   595              
Cost [8],[12],[13],[22]   574   574              
Investment, Identifier [Axis]: Accelevation LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [8],[12],[13],[22]   159   159              
Cost [8],[12],[13],[22]   146   146              
Investment, Identifier [Axis]: Acclime Holdings HK Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,884 [7],[8],[11],[12],[13]   5,884 [7],[8],[11],[12],[13]   2,438 [4],[5],[10],[24]          
Cost   5,853 [7],[8],[11],[12],[13]   5,853 [7],[8],[11],[12],[13]   2,467 [4],[5],[10],[24]          
Investment, Identifier [Axis]: Acclime Holdings HK Limited, Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8]   230   230              
Cost [7],[8]   229   229              
Investment, Identifier [Axis]: Accurus Aerospace Corporation, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   0 [8],[15]   0 [8],[15]   0 [5],[16]          
Cost   438 [8],[15]   438 [8],[15]   438 [5],[16]          
Investment, Identifier [Axis]: Accurus Aerospace Corporation, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   12,930 [8],[11],[12]   12,930 [8],[11],[12]   11,612 [3],[4],[5]          
Cost   12,992 [8],[11],[12]   12,992 [8],[11],[12]   11,900 [3],[4],[5]          
Investment, Identifier [Axis]: Accurus Aerospace Corporation, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value [8],[15]   0   0              
Cost [8],[15]   18   18              
Investment, Identifier [Axis]: Accurus Aerospace Corporation, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   606 [8],[11],[12],[13]   606 [8],[11],[12],[13]   1,768 [3],[4],[5],[14]          
Cost   619 [8],[11],[12],[13]   619 [8],[11],[12],[13]   1,825 [3],[4],[5],[14]          
Investment, Identifier [Axis]: Acogroup, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,611 [7],[8],[12],[19],[25]   3,611 [7],[8],[12],[19],[25]   5,412 [4],[5],[10],[26]          
Cost   8,051 [7],[8],[12],[19],[25]   8,051 [7],[8],[12],[19],[25]   7,708 [4],[5],[10],[26]          
Investment, Identifier [Axis]: Adhefin International, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,309 [7],[8],[12],[13],[19]   2,309 [7],[8],[12],[13],[19]   1,716 [4],[5],[10],[14],[20]          
Cost   2,199 [7],[8],[12],[13],[19]   2,199 [7],[8],[12],[13],[19]   1,768 [4],[5],[10],[14],[20]          
Investment, Identifier [Axis]: Adhefin International, Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[10],[20]           326          
Cost [4],[5],[10],[20]           341          
Investment, Identifier [Axis]: Advantage Software Company (The), LLC, Class A1 Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   543 [8],[15]   543 [8],[15]   593 [5],[16]          
Cost   280 [8],[15]   280 [8],[15]   280 [5],[16]          
Investment, Identifier [Axis]: Advantage Software Company (The), LLC, Class A2 Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   140 [8],[15]   140 [8],[15]   153 [5],[16]          
Cost   72 [8],[15]   72 [8],[15]   72 [5],[16]          
Investment, Identifier [Axis]: Advantage Software Company (The), LLC, Class B1 Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   0 [8],[15]   0 [8],[15]   0 [5],[16]          
Cost   9 [8],[15]   9 [8],[15]   9 [5],[16]          
Investment, Identifier [Axis]: Advantage Software Company (The), LLC, Class B2 Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   0 [8],[15]   0 [8],[15]   0 [5],[16]          
Cost   2 [8],[15]   2 [8],[15]   2 [5],[16]          
Investment, Identifier [Axis]: Aegros Holdco 2 Ltd, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8],[15]   587   587              
Cost [7],[8],[15]   12   12              
Investment, Identifier [Axis]: Aegros Holdco 2 Ltd, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8],[27]   5,309   5,309              
Cost [7],[8],[27]   5,980   5,980              
Investment, Identifier [Axis]: Air Canada 2020-2 Class B Pass Through Trust, Structured Secured Note - Class B                      
Schedule of Investments [Line Items]                      
Fair Value   1,799   1,799   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   3,194 [8],[11],[12]   3,194 [8],[11],[12]   2,710 [3],[4],[5]          
Cost   3,240 [8],[11],[12]   3,240 [8],[11],[12]   2,707 [3],[4],[5]          
Investment, Identifier [Axis]: AirX Climate Solutions, Inc., First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   3,211 [8],[11],[12],[13]   3,211 [8],[11],[12],[13]   3,828 [3],[4],[5],[14]          
Cost   3,191 [8],[11],[12],[13]   3,191 [8],[11],[12],[13]   3,754 [3],[4],[5],[14]          
Investment, Identifier [Axis]: AirX Climate Solutions, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (7) [8],[11],[12],[13]   (7) [8],[11],[12],[13]   0 [3],[4],[5],[14]          
Cost   (13) [8],[11],[12],[13]   (13) [8],[11],[12],[13]   (15) [3],[4],[5],[14]          
Investment, Identifier [Axis]: Aldinger Company, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8]   6,795   6,795              
Cost [8]   6,664   6,664              
Investment, Identifier [Axis]: AlliA Insurance Brokers NV, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,485 [7],[8],[12],[28]   5,485 [7],[8],[12],[28]   4,569 [4],[5],[10],[14],[26]          
Cost   4,932 [7],[8],[12],[28]   4,932 [7],[8],[12],[28]   4,646 [4],[5],[10],[14],[26]          
Investment, Identifier [Axis]: Alpine SG, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   12,743 [8],[11],[12],[17]   12,743 [8],[11],[12],[17]   22,949 [3],[4],[5],[18]          
Cost   12,522 [8],[11],[12],[17]   12,522 [8],[11],[12],[17]   22,664 [3],[4],[5],[18]          
Investment, Identifier [Axis]: Amalfi Midco, Class B Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   2,663 [7],[8],[15]   2,663 [7],[8],[15]   1,239 [5],[10],[16]          
Cost   1,115 [7],[8],[15]   1,115 [7],[8],[15]   1,115 [5],[10],[16]          
Investment, Identifier [Axis]: Amalfi Midco, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   348 [7],[8]   348 [7],[8]   290 [5],[10]          
Cost   325 [7],[8]   325 [7],[8]   301 [5],[10]          
Investment, Identifier [Axis]: Amalfi Midco, Subordinated Loan Notes                      
Schedule of Investments [Line Items]                      
Fair Value   6,411 [7],[8]   6,411 [7],[8]   5,492 [5],[10]          
Cost   5,695 [7],[8]   5,695 [7],[8]   5,416 [5],[10]          
Investment, Identifier [Axis]: Amalfi Midco, Warrants                      
Schedule of Investments [Line Items]                      
Fair Value   1,065 [7],[8],[15]   1,065 [7],[8],[15]   919 [5],[10],[16]          
Cost   4 [7],[8],[15]   4 [7],[8],[15]   4 [5],[10],[16]          
Investment, Identifier [Axis]: Americo Chemical Products, LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   119 [8],[15]   119 [8],[15]   119 [5],[16]          
Cost   88 [8],[15]   88 [8],[15]   88 [5],[16]          
Investment, Identifier [Axis]: Americo Chemical Products, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,489 [8],[12],[22]   2,489 [8],[12],[22]   2,611 [4],[5],[23]          
Cost   2,479 [8],[12],[22]   2,479 [8],[12],[22]   2,604 [4],[5],[23]          
Investment, Identifier [Axis]: Americo Chemical Products, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (5) [8],[12],[13],[22]   (5) [8],[12],[13],[22]   (7) [4],[5],[14],[23]          
Cost   (7) [8],[12],[13],[22]   (7) [8],[12],[13],[22]   (9) [4],[5],[14],[23]          
Investment, Identifier [Axis]: AnalytiChem Holding GmbH, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   6,227 [7],[8],[12],[19]   6,227 [7],[8],[12],[19]   2,995 [4],[5],[10],[20]          
Cost   5,747 [7],[8],[12],[19]   5,747 [7],[8],[12],[19]   3,192 [4],[5],[10],[20]          
Investment, Identifier [Axis]: AnalytiChem Holding GmbH, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   1,012 [7],[8],[11],[12]   1,012 [7],[8],[11],[12]   1,576 [4],[5],[10],[26]          
Cost   1,019 [7],[8],[11],[12]   1,019 [7],[8],[11],[12]   1,592 [4],[5],[10],[26]          
Investment, Identifier [Axis]: AnalytiChem Holding GmbH, First Lien Senior Secured Term Loan 3                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[10],[26]           904          
Cost [4],[5],[10],[26]           947          
Investment, Identifier [Axis]: AnalytiChem Holding GmbH, First Lien Senior Secured Term Loan 4                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[5],[10]           1,008          
Cost [3],[4],[5],[10]           1,019          
Investment, Identifier [Axis]: Apex Bidco Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,358 [7],[8],[12],[29]   3,358 [7],[8],[12],[29]   3,180 [4],[5],[10],[30]          
Cost   3,222 [7],[8],[12],[29]   3,222 [7],[8],[12],[29]   3,206 [4],[5],[10],[30]          
Investment, Identifier [Axis]: Apex Bidco Limited, Subordinated Senior Unsecured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   352 [7],[8]   352 [7],[8]   297 [5],[10]          
Cost   361 [7],[8]   361 [7],[8]   333 [5],[10]          
Investment, Identifier [Axis]: Apidos CLO XXIV, Series 2016-24A, Subordinated Structured Notes                      
Schedule of Investments [Line Items]                      
Fair Value   2,896 [7],[17]   2,896 [7],[17]   3,272 [10],[18]          
Cost   3,849 [7],[17]   3,849 [7],[17]   3,527 [10],[18]          
Investment, Identifier [Axis]: Application Boot Camp LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value [8]   256   256              
Cost [8]   235   235              
Investment, Identifier [Axis]: Application Boot Camp LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12]   1,199   1,199              
Cost [8],[11],[12]   1,198   1,198              
Investment, Identifier [Axis]: Application Boot Camp LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12],[13]   (7)   (7)              
Cost [8],[11],[12],[13]   (5)   (5)              
Investment, Identifier [Axis]: Application Boot Camp LLC, Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8]   82   82              
Cost [8]   82   82              
Investment, Identifier [Axis]: Aptus 1829. GmbH, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   0 [7],[8],[15]   0 [7],[8],[15]   0 [5],[10],[16]          
Cost   12 [7],[8],[15]   12 [7],[8],[15]   12 [5],[10],[16]          
Investment, Identifier [Axis]: Aptus 1829. GmbH, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,614 [7],[8],[12],[28]   3,614 [7],[8],[12],[28]   1,994 [4],[5],[10],[26]          
Cost   3,745 [7],[8],[12],[28]   3,745 [7],[8],[12],[28]   2,484 [4],[5],[10],[26]          
Investment, Identifier [Axis]: Aptus 1829. GmbH, Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value   66 [7],[8],[15]   66 [7],[8],[15]   40 [5],[10],[16]          
Cost   120 [7],[8],[15]   120 [7],[8],[15]   120 [5],[10],[16]          
Investment, Identifier [Axis]: Apus Bidco Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,878 [7],[8],[12],[31]   3,878 [7],[8],[12],[31]   3,608 [4],[5],[10],[32]          
Cost   3,924 [7],[8],[12],[31]   3,924 [7],[8],[12],[31]   3,913 [4],[5],[10],[32]          
Investment, Identifier [Axis]: Aquavista Watersides 2 LTD, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,787 [7],[8],[12],[31]   6,787 [7],[8],[12],[31]   6,314 [4],[5],[10],[14],[30]          
Cost   6,555 [7],[8],[12],[31]   6,555 [7],[8],[12],[31]   6,492 [4],[5],[10],[14],[30]          
Investment, Identifier [Axis]: Aquavista Watersides 2 LTD, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,452 [7],[8],[12],[31]   2,452 [7],[8],[12],[31]   2,119 [4],[5],[10],[30]          
Cost   2,370 [7],[8],[12],[31]   2,370 [7],[8],[12],[31]   2,187 [4],[5],[10],[30]          
Investment, Identifier [Axis]: Arc Education, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,344 [7],[8],[12],[13],[28]   4,344 [7],[8],[12],[13],[28]   3,807 [4],[5],[10],[14],[20]          
Cost   3,726 [7],[8],[12],[13],[28]   3,726 [7],[8],[12],[13],[28]   3,712 [4],[5],[10],[14],[20]          
Investment, Identifier [Axis]: Arch Global Precision LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   8,683 [8],[12],[22]   8,683 [8],[12],[22]   8,769 [3],[4],[5]          
Cost   8,896 [8],[12],[22]   8,896 [8],[12],[22]   8,966 [3],[4],[5]          
Investment, Identifier [Axis]: Archimede, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,336 [7],[8],[12],[19]   6,336 [7],[8],[12],[19]   5,676 [4],[5],[10],[20]          
Cost   6,517 [7],[8],[12],[19]   6,517 [7],[8],[12],[19]   6,498 [4],[5],[10],[20]          
Investment, Identifier [Axis]: Argus Bidco Limited, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   0 [7],[8],[15]   0 [7],[8],[15]   0 [5],[10],[16]          
Cost   1 [7],[8],[15]   1 [7],[8],[15]   1 [5],[10],[16]          
Investment, Identifier [Axis]: Argus Bidco Limited, Equity Loan Notes                      
Schedule of Investments [Line Items]                      
Fair Value   30 [7],[8]   30 [7],[8]   33 [5],[10]          
Cost   63 [7],[8]   63 [7],[8]   63 [5],[10]          
Investment, Identifier [Axis]: Argus Bidco Limited, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   2,033 [7],[8],[12],[28]   2,033 [7],[8],[12],[28]   1,773 [4],[5],[10],[20]          
Cost   1,925 [7],[8],[12],[28]   1,925 [7],[8],[12],[28]   1,875 [4],[5],[10],[20]          
Investment, Identifier [Axis]: Argus Bidco Limited, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   129 [7],[8],[12],[33]   129 [7],[8],[12],[33]   127 [3],[4],[5],[10]          
Cost   138 [7],[8],[12],[33]   138 [7],[8],[12],[33]   133 [3],[4],[5],[10]          
Investment, Identifier [Axis]: Argus Bidco Limited, First Lien Senior Secured Term Loan 3                      
Schedule of Investments [Line Items]                      
Fair Value   1,759 [7],[8],[12],[31]   1,759 [7],[8],[12],[31]   1,584 [4],[5],[10],[14],[30]          
Cost   1,664 [7],[8],[12],[31]   1,664 [7],[8],[12],[31]   1,596 [4],[5],[10],[14],[30]          
Investment, Identifier [Axis]: Argus Bidco Limited, Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value   30 [7],[8]   30 [7],[8]   33 [5],[10]          
Cost   63 [7],[8]   63 [7],[8]   63 [5],[10]          
Investment, Identifier [Axis]: Argus Bidco Limited, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   914 [7],[8]   914 [7],[8]   777 [5],[10]          
Cost   914 [7],[8]   914 [7],[8]   811 [5],[10]          
Investment, Identifier [Axis]: Armstrong Transport Group (Pele Buyer, LLC), First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,433 [8],[12],[33]   6,433 [8],[12],[33]   5,637 [3],[4],[5]          
Cost   6,481 [8],[12],[33]   6,481 [8],[12],[33]   5,935 [3],[4],[5]          
Investment, Identifier [Axis]: Armstrong Transport Group (Pele Buyer, LLC), Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [8],[12],[13],[33]   1   1              
Cost [8],[12],[13],[33]   1   1              
Investment, Identifier [Axis]: Artemis Bidco Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   472 [7],[8],[12],[13],[19]   472 [7],[8],[12],[13],[19]   256 [4],[5],[10],[14],[20]          
Cost   430 [7],[8],[12],[13],[19]   430 [7],[8],[12],[13],[19]   261 [4],[5],[10],[14],[20]          
Investment, Identifier [Axis]: Astra Bidco Limited, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   449 [7],[8],[12],[19]   449 [7],[8],[12],[19]   396 [4],[5],[10],[20]          
Cost   408 [7],[8],[12],[19]   408 [7],[8],[12],[19]   408 [4],[5],[10],[20]          
Investment, Identifier [Axis]: Astra Bidco Limited, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   2,606 [7],[8],[12],[31]   2,606 [7],[8],[12],[31]   2,365 [4],[5],[10],[14],[32]          
Cost   2,525 [7],[8],[12],[31]   2,525 [7],[8],[12],[31]   2,451 [4],[5],[10],[14],[32]          
Investment, Identifier [Axis]: Auxi International, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   1,569 [7],[8],[12],[19]   1,569 [7],[8],[12],[19]   1,351 [4],[5],[10],[26]          
Cost   1,543 [7],[8],[12],[19]   1,543 [7],[8],[12],[19]   1,538 [4],[5],[10],[26]          
Investment, Identifier [Axis]: Auxi International, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   860 [7],[8],[12],[29]   860 [7],[8],[12],[29]   782 [4],[5],[10],[32]          
Cost   912 [7],[8],[12],[29]   912 [7],[8],[12],[29]   909 [4],[5],[10],[32]          
Investment, Identifier [Axis]: Avance Clinical Bidco Pty Ltd, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,599 [7],[8],[12],[13],[34]   1,599 [7],[8],[12],[13],[34]   1,967 [4],[5],[10],[14],[35]          
Cost   1,679 [7],[8],[12],[13],[34]   1,679 [7],[8],[12],[13],[34]   2,204 [4],[5],[10],[14],[35]          
Investment, Identifier [Axis]: Azalea Buyer, Inc., Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   319 [8],[15]   319 [8],[15]   288 [5],[16]          
Cost   192 [8],[15]   192 [8],[15]   192 [5],[16]          
Investment, Identifier [Axis]: Azalea Buyer, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,750 [8],[12],[22]   4,750 [8],[12],[22]   4,785 [4],[5],[14],[23]          
Cost   4,715 [8],[12],[22]   4,715 [8],[12],[22]   4,731 [4],[5],[14],[23]          
Investment, Identifier [Axis]: Azalea Buyer, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [8],[12],[13],[22]   0 [8],[12],[13],[22]   0 [4],[5],[14],[23]          
Cost   (4) [8],[12],[13],[22]   (4) [8],[12],[13],[22]   (5) [4],[5],[14],[23]          
Investment, Identifier [Axis]: Azalea Buyer, Inc., Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,982 [8]   1,982 [8]   1,805 [5]          
Cost   1,970 [8]   1,970 [8]   1,799 [5]          
Investment, Identifier [Axis]: BKF Buyer, Inc., Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   1,115 [8],[15]   1,115 [8],[15]   1,045 [5],[16]          
Cost   1,004 [8],[15]   1,004 [8],[15]   1,004 [5],[16]          
Investment, Identifier [Axis]: BKF Buyer, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   7,995 [8],[12],[22]   7,995 [8],[12],[22]   8,015 [4],[5],[23]          
Cost   7,991 [8],[12],[22]   7,991 [8],[12],[22]   8,013 [4],[5],[23]          
Investment, Identifier [Axis]: BKF Buyer, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (37) [8],[12],[13],[22]   (37) [8],[12],[13],[22]   (52) [4],[5],[14],[23]          
Cost   (37) [8],[12],[13],[22]   (37) [8],[12],[13],[22]   (52) [4],[5],[14],[23]          
Investment, Identifier [Axis]: BNI Global, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   10,607 [8],[12],[36]   10,607 [8],[12],[36]   9,302 [4],[5],[37]          
Cost   9,682 [8],[12],[36]   9,682 [8],[12],[36]   9,694 [4],[5],[37]          
Investment, Identifier [Axis]: BPG Holdings IV Corp, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   11,699 [8],[11],[12]   11,699 [8],[11],[12]   12,560 [3],[4],[5]          
Cost   13,605 [8],[11],[12]   13,605 [8],[11],[12]   13,442 [3],[4],[5]          
Investment, Identifier [Axis]: BVI Medical, Inc., Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[20]           9,482          
Cost [4],[5],[20]           9,614          
Investment, Identifier [Axis]: Bariacum S.A, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,458 [7],[8],[12],[19]   2,458 [7],[8],[12],[19]   3,107 [4],[5],[10],[26]          
Cost   3,293 [7],[8],[12],[19]   3,293 [7],[8],[12],[19]   3,260 [4],[5],[10],[26]          
Investment, Identifier [Axis]: Basin Innovation Group, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   7,664 [8],[12],[13],[33]   7,664 [8],[12],[13],[33]   13,949 [4],[5],[14],[23]          
Cost   7,557 [8],[12],[13],[33]   7,557 [8],[12],[13],[33]   13,952 [4],[5],[14],[23]          
Investment, Identifier [Axis]: Basin Innovation Group, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [8],[12],[13],[33]   0 [8],[12],[13],[33]   (28) [4],[5],[14],[23]          
Cost   (24) [8],[12],[13],[33]   (24) [8],[12],[13],[33]   (28) [4],[5],[14],[23]          
Investment, Identifier [Axis]: Benify (Bennevis AB), First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[10],[38]           854          
Cost [4],[5],[10],[38]           996          
Investment, Identifier [Axis]: Beyond Risk Management, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,282 [8],[12],[13],[22]   5,282 [8],[12],[13],[22]   5,322 [3],[4],[5],[14]          
Cost   5,221 [8],[12],[13],[22]   5,221 [8],[12],[13],[22]   5,242 [3],[4],[5],[14]          
Investment, Identifier [Axis]: Bidwax, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   8,192 [7],[8],[12],[28]   8,192 [7],[8],[12],[28]   7,088 [4],[5],[10],[26]          
Cost   8,173 [7],[8],[12],[28]   8,173 [7],[8],[12],[28]   8,148 [4],[5],[10],[26]          
Investment, Identifier [Axis]: Biolam Group, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8],[15],[39]   0   0              
Cost [7],[8],[15],[39]   0   0              
Investment, Identifier [Axis]: Biolam Group, Convertible Bonds                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8],[15],[39]   0   0              
Cost [7],[8],[15],[39]   0   0              
Investment, Identifier [Axis]: Biolam Group, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,699 [7],[8],[12],[13],[25],[28],[39]   1,699 [7],[8],[12],[13],[25],[28],[39]   1,406 [4],[5],[10],[14],[26],[40]          
Cost   2,570 [7],[8],[12],[13],[25],[28],[39]   2,570 [7],[8],[12],[13],[25],[28],[39]   2,517 [4],[5],[10],[14],[26],[40]          
Investment, Identifier [Axis]: Biolam Group, Ordinary Shares                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8],[15],[39]   0   0              
Cost [7],[8],[15],[39]   0   0              
Investment, Identifier [Axis]: Biolam Group, Preferred Stock A                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8],[15],[39]   0   0              
Cost [7],[8],[15],[39]   0   0              
Investment, Identifier [Axis]: Biolam Group, Preferred Stock A2                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8],[15],[39]   0   0              
Cost [7],[8],[15],[39]   0   0              
Investment, Identifier [Axis]: Biolam Group, Preferred Stock B                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8],[15],[39]   0   0              
Cost [7],[8],[15],[39]   0   0              
Investment, Identifier [Axis]: Biolam Group, Preferred Stock C                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8],[15],[39]   0   0              
Cost [7],[8],[15],[39]   0   0              
Investment, Identifier [Axis]: Biolam Group, Preferred Stock O1                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8],[15],[39]   0   0              
Cost [7],[8],[15],[39]   0   0              
Investment, Identifier [Axis]: Biolam Group, Preferred Stock O2                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8],[15],[39]   0   0              
Cost [7],[8],[15],[39]   0   0              
Investment, Identifier [Axis]: Biolam Group, Warrants                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8],[15],[39]   0   0              
Cost [7],[8],[15],[39]   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   1,699   1,699   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]: Bishop Street Underwriters, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8],[12],[13],[22]   2,854   2,854              
Cost [8],[12],[13],[22]   2,855   2,855              
Investment, Identifier [Axis]: Bishop Street Underwriters, LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value [8],[15]   287   287              
Cost [8],[15]   287   287              
Investment, Identifier [Axis]: Black Angus Steakhouses, LLC, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   0 [41]   0 [41]   0 [5],[18],[40],[41],[42],[43] $ 4,869 [43],[44]        
Cost [5],[18],[40],[42]           9,628          
Investment, Identifier [Axis]: Black Angus Steakhouses, LLC, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   0 [41]   0 [41]   2,744 [4],[5],[18],[23],[40],[41],[42],[43] 7,166 [43],[44]        
Cost [4],[5],[18],[23],[40],[42]           8,091          
Investment, Identifier [Axis]: Black Angus Steakhouses, LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value [5],[16],[18],[42]           0          
Cost [5],[16],[18],[42]           0          
Investment, Identifier [Axis]: Black Angus Steakhouses, LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   0   0   0 [43] 0 [43]        
Investment, Identifier [Axis]: Bounteous, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,054 [8],[12],[22]   4,054 [8],[12],[22]   4,081 [3],[4],[5]          
Cost   4,047 [8],[12],[22]   4,047 [8],[12],[22]   4,067 [3],[4],[5]          
Investment, Identifier [Axis]: Breeze Aviation Group Inc, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12]   7,496   7,496              
Cost [8],[11],[12]   7,476   7,476              
Investment, Identifier [Axis]: Bridger Aerospace Group Holdings, LLC, Municipal Revenue Bond                      
Schedule of Investments [Line Items]                      
Fair Value   28,014   28,014   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   15,716 [8]   15,716 [8]   14,618 [5]          
Cost   17,335 [8]   17,335 [8]   16,725 [5]          
Investment, Identifier [Axis]: BrightSign LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,036 [8],[12],[22]   5,036 [8],[12],[22]   4,657 [4],[5],[23]          
Cost   5,016 [8],[12],[22]   5,016 [8],[12],[22]   4,635 [4],[5],[23]          
Investment, Identifier [Axis]: BrightSign LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value [8]   1,318   1,318              
Cost [8]   1,107   1,107              
Investment, Identifier [Axis]: BrightSign LLC, LLC units                      
Schedule of Investments [Line Items]                      
Fair Value [5]           1,174          
Cost [5]           1,107          
Investment, Identifier [Axis]: BrightSign LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   642 [8],[12],[13],[22]   642 [8],[12],[13],[22]   1,085 [4],[5],[14],[23]          
Cost   638 [8],[12],[13],[22]   638 [8],[12],[13],[22]   1,079 [4],[5],[14],[23]          
Investment, Identifier [Axis]: Brightpay Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,451 [7],[8],[12],[28]   2,451 [7],[8],[12],[28]   386 [4],[5],[10],[14],[20]          
Cost   2,339 [7],[8],[12],[28]   2,339 [7],[8],[12],[28]   388 [4],[5],[10],[14],[20]          
Investment, Identifier [Axis]: Brightpay Limited, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[10],[26]           1,720          
Cost [4],[5],[10],[26]           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   430   430   507          
Cost   408   408   489          
Investment, Identifier [Axis]: British Engineering Services Holdco Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   14,763 [7],[8],[12],[31]   14,763 [7],[8],[12],[31]   14,454 [4],[5],[10],[32]          
Cost   16,062 [7],[8],[12],[31]   16,062 [7],[8],[12],[31]   15,527 [4],[5],[10],[32]          
Investment, Identifier [Axis]: Broadstone Group UK LTD, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8],[12],[13],[31]   3,278   3,278              
Cost [7],[8],[12],[13],[31]   3,084   3,084              
Investment, Identifier [Axis]: Brook & Whittle Holding Corp., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,726 [11],[12],[17]   2,726 [11],[12],[17]   2,461 [3],[4],[18]          
Cost   3,328 [11],[12],[17]   3,328 [11],[12],[17]   2,751 [3],[4],[18]          
Investment, Identifier [Axis]: Brown Machine Group Holdings, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,698 [8],[11],[12]   5,698 [8],[11],[12]   5,716 [4],[5],[23]          
Cost   6,088 [8],[11],[12]   6,088 [8],[11],[12]   6,078 [4],[5],[23]          
Investment, Identifier [Axis]: Burgess Point Purchaser Corporation, LP Units                      
Schedule of Investments [Line Items]                      
Fair Value   414 [8],[15]   414 [8],[15]   450 [5],[16]          
Cost   455 [8],[15]   455 [8],[15]   455 [5],[16]          
Investment, Identifier [Axis]: Burgess Point Purchaser Corporation, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,100 [8],[11],[12]   4,100 [8],[11],[12]   4,364 [4],[5],[24]          
Cost   4,431 [8],[11],[12]   4,431 [8],[11],[12]   4,405 [4],[5],[24]          
Investment, Identifier [Axis]: CAi Software, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[5]           12,455          
Cost [3],[4],[5]           12,349          
Investment, Identifier [Axis]: CAi Software, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[5],[14]           1,246          
Cost [3],[4],[5],[14]           1,225          
Investment, Identifier [Axis]: CCFF Buyer, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,807 [8],[12],[13],[33]   5,807 [8],[12],[13],[33]   5,809 [3],[4],[5],[14]          
Cost   5,766 [8],[12],[13],[33]   5,766 [8],[12],[13],[33]   5,788 [3],[4],[5],[14]          
Investment, Identifier [Axis]: CCFF Buyer, LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   249 [8]   249 [8]   235 [5]          
Cost   233 [8]   233 [8]   233 [5]          
Investment, Identifier [Axis]: CCFF Buyer, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (10) [8],[12],[13],[33]   (10) [8],[12],[13],[33]   (15) [3],[4],[5],[14]          
Cost   (16) [8],[12],[13],[33]   (16) [8],[12],[13],[33]   (18) [3],[4],[5],[14]          
Investment, Identifier [Axis]: CEC Entertainment, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12]   3,426   3,426              
Cost [8],[11],[12]   3,426   3,426              
Investment, Identifier [Axis]: CGI Parent, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   13,552 [8],[11],[12]   13,552 [8],[11],[12]   14,008 [3],[4],[5]          
Cost   13,378 [8],[11],[12]   13,378 [8],[11],[12]   13,780 [3],[4],[5]          
Investment, Identifier [Axis]: CGI Parent, LLC, Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value   1,909 [8],[15]   1,909 [8],[15]   1,710 [5],[16]          
Cost   722 [8],[15]   722 [8],[15]   722 [5],[16]          
Investment, Identifier [Axis]: CGI Parent, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [8],[11],[12],[13]   0 [8],[11],[12],[13]   0 [3],[4],[5],[14]          
Cost   (13) [8],[11],[12],[13]   (13) [8],[11],[12],[13]   (18) [3],[4],[5],[14]          
Investment, Identifier [Axis]: CH Buyer, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12]   861   861              
Cost [8],[11],[12]   860   860              
Investment, Identifier [Axis]: CH Buyer, LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value [8],[15]   71   71              
Cost [8],[15]   69   69              
Investment, Identifier [Axis]: CH Buyer, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12],[13]   (1)   (1)              
Cost [8],[11],[12],[13]   (1)   (1)              
Investment, Identifier [Axis]: CM Acquisitions Holdings Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   14,068 [8],[12],[33]   14,068 [8],[12],[33]   12,140 [3],[4],[5]          
Cost   14,102 [8],[12],[33]   14,102 [8],[12],[33]   12,462 [3],[4],[5]          
Investment, Identifier [Axis]: CM Acquisitions Holdings Inc., First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[5]           1,523          
Cost [3],[4],[5]           1,563          
Investment, Identifier [Axis]: CMT Opco Holding, LLC (Concept Machine), First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,166 [8],[11],[12]   4,166 [8],[11],[12]   3,381 [3],[4],[5]          
Cost   4,702 [8],[11],[12]   4,702 [8],[11],[12]   4,746 [3],[4],[5]          
Investment, Identifier [Axis]: CMT Opco Holding, LLC (Concept Machine), LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   0 [8],[15]   0 [8],[15]   0 [5],[16]          
Cost   506 [8],[15]   506 [8],[15]   506 [5],[16]          
Investment, Identifier [Axis]: CSL DualCom, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,325 [7],[8],[12],[27]   2,325 [7],[8],[12],[27]   2,016 [4],[5],[10],[14],[45]          
Cost   2,082 [7],[8],[12],[27]   2,082 [7],[8],[12],[27]   1,922 [4],[5],[10],[14],[45]          
Investment, Identifier [Axis]: CTI Foods Holdings Co., LLC, 2024 LIFO Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[5]           4,211          
Cost [3],[4],[5]           4,067          
Investment, Identifier [Axis]: CTI Foods Holdings Co., LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   1,443 [8],[15]   1,443 [8],[15]   695 [5],[16]          
Cost   0 [8],[15]   0 [8],[15]   0 [5],[16]          
Investment, Identifier [Axis]: CTI Foods Holdings Co., LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12]   11,173   11,173              
Cost [8],[11],[12]   10,971   10,971              
Investment, Identifier [Axis]: CTI Foods Holdings Co., LLC, First Out Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[5]           2,860          
Cost [3],[4],[5]           2,797          
Investment, Identifier [Axis]: CTI Foods Holdings Co., LLC, First Out Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12]   856   856              
Cost [8],[11],[12]   856   856              
Investment, Identifier [Axis]: CTI Foods Holdings Co., LLC, First Out Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12]   2,315   2,315              
Cost [8],[11],[12]   2,285   2,285              
Investment, Identifier [Axis]: CTI Foods Holdings Co., LLC, Last In First Out Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12]   4,696   4,696              
Cost [8],[11],[12]   4,596   4,596              
Investment, Identifier [Axis]: CTI Foods Holdings Co., LLC, Second Out Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   661 [8],[11],[12]   661 [8],[11],[12]   597 [3],[4],[5]          
Cost   661 [8],[11],[12]   661 [8],[11],[12]   597 [3],[4],[5]          
Investment, Identifier [Axis]: CW Group Holdings, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,187 [8],[11],[12],[13]   5,187 [8],[11],[12],[13]   2,732 [3],[4],[5]          
Cost   5,079 [8],[11],[12],[13]   5,079 [8],[11],[12],[13]   2,708 [3],[4],[5]          
Investment, Identifier [Axis]: CW Group Holdings, LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   484 [8],[15]   484 [8],[15]   371 [5]          
Cost   161 [8],[15]   161 [8],[15]   161 [5]          
Investment, Identifier [Axis]: Caldwell & Gregory LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   14,180 [8],[11],[12],[13]   14,180 [8],[11],[12],[13]   18,833 [3],[4],[5],[14]          
Cost   13,992 [8],[11],[12],[13]   13,992 [8],[11],[12],[13]   18,817 [3],[4],[5],[14]          
Investment, Identifier [Axis]: Caldwell & Gregory LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [8],[11],[12],[13]   0 [8],[11],[12],[13]   (34) [3],[4],[5],[14]          
Cost   (31) [8],[11],[12],[13]   (31) [8],[11],[12],[13]   (36) [3],[4],[5],[14]          
Investment, Identifier [Axis]: Canadian Orthodontic Partners Corp., Class A Equity                      
Schedule of Investments [Line Items]                      
Fair Value   0 [7],[8],[15]   0 [7],[8],[15]   0 [5],[10],[16]          
Cost   389 [7],[8],[15]   389 [7],[8],[15]   389 [5],[10],[16]          
Investment, Identifier [Axis]: Canadian Orthodontic Partners Corp., Class C - Warrants                      
Schedule of Investments [Line Items]                      
Fair Value   0 [7],[8],[15]   0 [7],[8],[15]   0 [5],[10],[16]          
Cost   0 [7],[8],[15]   0 [7],[8],[15]   0 [5],[10],[16]          
Investment, Identifier [Axis]: Canadian Orthodontic Partners Corp., Class X Equity                      
Schedule of Investments [Line Items]                      
Fair Value   0 [7],[8],[15]   0 [7],[8],[15]   0 [5],[10],[16]          
Cost   35 [7],[8],[15]   35 [7],[8],[15]   35 [5],[10],[16]          
Investment, Identifier [Axis]: Canadian Orthodontic Partners Corp., Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   0 [7],[8],[15]   0 [7],[8],[15]   0 [5],[10],[16]          
Cost   0 [7],[8],[15]   0 [7],[8],[15]   0 [5],[10],[16]          
Investment, Identifier [Axis]: Canadian Orthodontic Partners Corp., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   228 [7],[8],[12],[25],[46]   228 [7],[8],[12],[25],[46]   360 [4],[5],[10],[40],[47]          
Cost   1,850 [7],[8],[12],[25],[46]   1,850 [7],[8],[12],[25],[46]   1,860 [4],[5],[10],[40],[47]          
Investment, Identifier [Axis]: Canadian Orthodontic Partners Corp., Super Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   257 [7],[8],[13]   257 [7],[8],[13]   185 [5],[10],[14]          
Cost   87 [7],[8],[13]   87 [7],[8],[13]   64 [5],[10],[14]          
Investment, Identifier [Axis]: Caribou Holding Company, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[5],[10]           4,236          
Cost [3],[4],[5],[10]           4,285          
Investment, Identifier [Axis]: Caribou Holding Company, LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value [5],[10],[16]           682          
Cost [5],[10],[16]           682          
Investment, Identifier [Axis]: Cascade Residential Services LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,543 [8],[11],[12]   4,543 [8],[11],[12]   3,742 [3],[4],[5],[14]          
Cost   4,534 [8],[11],[12]   4,534 [8],[11],[12]   3,918 [3],[4],[5],[14]          
Investment, Identifier [Axis]: Cascade Residential Services LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (5) [8],[11],[12],[13]   (5) [8],[11],[12],[13]   312 [3],[4],[5]          
Cost   (6) [8],[11],[12],[13]   (6) [8],[11],[12],[13]   324 [3],[4],[5]          
Investment, Identifier [Axis]: Catawba River Limited, Structured - Junior Note                      
Schedule of Investments [Line Items]                      
Fair Value   2,064 [7],[8],[15]   2,064 [7],[8],[15]   2,365 [5],[10]          
Cost   4,059 [7],[8],[15]   4,059 [7],[8],[15]   4,442 [5],[10]          
Investment, Identifier [Axis]: Celebration Bidco, LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   7,745 [8],[15],[39]   7,745 [8],[15],[39]   11,262 [5],[16],[48]          
Cost   12,177 [8],[15],[39]   12,177 [8],[15],[39]   12,177 [5],[16],[48]          
Investment, Identifier [Axis]: Celebration Bidco, LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   7,745   7,745   11,262 [49] 12,177 [49]        
Investment, Identifier [Axis]: Celebration Bidco, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[5],[48]           6,414          
Cost [3],[5],[48]           6,414          
Investment, Identifier [Axis]: Celebration Bidco, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [49]           6,414 6,214        
Investment, Identifier [Axis]: Celebration Bidco, LLC, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   6,752 [8],[11],[39]   6,752 [8],[11],[39]   6,414          
Cost [8],[11],[39]   7,033   7,033              
Investment, Identifier [Axis]: Celebration Bidco, LLC, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   1,387 [8],[11],[39]   1,387 [8],[11],[39]   0          
Cost [8],[11],[39]   1,387   1,387              
Investment, Identifier [Axis]: Centralis Finco S.a.r.l., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[10],[20]           2,996          
Cost [4],[5],[10],[20]           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 [7],[8],[12],[19]   4,389   4,389              
Cost [7],[8],[12],[19]   3,883   3,883              
Investment, Identifier [Axis]: Centralis Finco S.a.r.l., First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8],[12],[19]   833   833              
Cost [7],[8],[12],[19]   762   762              
Investment, Identifier [Axis]: Ceres Pharma NV, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[10],[26]           3,167          
Cost [4],[5],[10],[26]           3,292          
Investment, Identifier [Axis]: Ceres Pharma NV, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8],[12],[28]   3,572   3,572              
Cost [7],[8],[12],[28]   3,303   3,303              
Investment, Identifier [Axis]: Ceres Pharma NV, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8],[12],[13],[19]   399   399              
Cost [7],[8],[12],[13],[19]   382   382              
Investment, Identifier [Axis]: CloudOne Digital Corp., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12]   12,139   12,139              
Cost [8],[11],[12]   12,142   12,142              
Investment, Identifier [Axis]: CloudOne Digital Corp., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12],[13]   (34)   (34)              
Cost [8],[11],[12],[13]   (33)   (33)              
Investment, Identifier [Axis]: Coastal Marina Holdings, LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   19,983 [8],[15],[39]   19,983 [8],[15],[39]   16,852 [5],[16],[48],[49] 12,160 [49]        
Cost   16,495 [8],[15],[39]   16,495 [8],[15],[39]   16,495 [5],[16],[48]          
Investment, Identifier [Axis]: Coastal Marina Holdings, LLC, Subordinated Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   15,861 [8],[39]   15,861 [8],[39]   15,770 [5],[48],[49] 15,649 [49]        
Cost   15,767 [8],[39]   15,767 [8],[39]   15,690 [5],[48]          
Investment, Identifier [Axis]: Coastal Marina Holdings, LLC, Subordinated Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   7,313 [8],[39]   7,313 [8],[39]   7,271 [5],[48],[49] 6,868 [49]        
Cost   7,349 [8],[39]   7,349 [8],[39]   7,322 [5],[48]          
Investment, Identifier [Axis]: Cobham Slip Rings SAS, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,292 [7],[8],[11],[12]   1,292 [7],[8],[11],[12]   1,303 [4],[5],[10],[24]          
Cost   1,291 [7],[8],[11],[12]   1,291 [7],[8],[11],[12]   1,286 [4],[5],[10],[24]          
Investment, Identifier [Axis]: Coherus Biosciences, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,963 [8],[11],[12]   3,963 [8],[11],[12]   3,903 [3],[4],[5]          
Cost   3,897 [8],[11],[12]   3,897 [8],[11],[12]   3,883 [3],[4],[5]          
Investment, Identifier [Axis]: Coherus Biosciences, Inc., Royalty Rights                      
Schedule of Investments [Line Items]                      
Fair Value   1,581 [8]   1,581 [8]   5,834 [5]          
Cost   1,318 [8]   1,318 [8]   3,627 [5]          
Investment, Identifier [Axis]: Command Alkon (Project Potter Buyer, LLC), Class B Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   170 [8],[15]   170 [8],[15]   175 [5],[16]          
Cost   0 [8],[15]   0 [8],[15]   0 [5],[16]          
Investment, Identifier [Axis]: Compass Precision, LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   344 [8],[15]   344 [8],[15]   299 [5],[16]          
Cost   125 [8],[15]   125 [8],[15]   125 [5],[16]          
Investment, Identifier [Axis]: Compass Precision, LLC, Senior Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   653 [8]   653 [8]   640 [5]          
Cost   653 [8]   653 [8]   642 [5]          
Investment, Identifier [Axis]: Comply365, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   10,811 [8],[11],[12]   10,811 [8],[11],[12]   18,663 [4],[5],[23]          
Cost   10,689 [8],[11],[12]   10,689 [8],[11],[12]   18,409 [4],[5],[23]          
Investment, Identifier [Axis]: Comply365, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [8],[11],[12],[13]   0 [8],[11],[12],[13]   0 [4],[5],[14],[23]          
Cost   (12) [8],[11],[12],[13]   (12) [8],[11],[12],[13]   (14) [4],[5],[14],[23]          
Investment, Identifier [Axis]: Contabo Finco S.À.R.L, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[10],[20]           4,822          
Cost [4],[5],[10],[20]           4,555          
Investment, Identifier [Axis]: Contabo FincoS.À R.L, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8],[12],[19]   5,471   5,471              
Cost [7],[8],[12],[19]   4,569   4,569              
Investment, Identifier [Axis]: Coyo Uprising GmbH, Class A Units                      
Schedule of Investments [Line Items]                      
Fair Value   241 [7],[8],[15]   241 [7],[8],[15]   206 [5],[10],[16]          
Cost   205 [7],[8],[15]   205 [7],[8],[15]   205 [5],[10],[16]          
Investment, Identifier [Axis]: Coyo Uprising GmbH, Class B Units                      
Schedule of Investments [Line Items]                      
Fair Value   452 [7],[8],[15]   452 [7],[8],[15]   381 [5],[10],[16]          
Cost   446 [7],[8],[15]   446 [7],[8],[15]   446 [5],[10],[16]          
Investment, Identifier [Axis]: Coyo Uprising GmbH, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,337 [7],[8],[12],[13],[28]   5,337 [7],[8],[12],[13],[28]   4,590 [4],[5],[10],[14],[20]          
Cost   5,327 [7],[8],[12],[13],[28]   5,327 [7],[8],[12],[13],[28]   5,194 [4],[5],[10],[14],[20]          
Investment, Identifier [Axis]: DAWGS Intermediate Holdings Co., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12]   1,784   1,784              
Cost [8],[11],[12]   1,782   1,782              
Investment, Identifier [Axis]: DAWGS Intermediate Holdings Co., LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value [8],[15]   401   401              
Cost [8],[15]   347   347              
Investment, Identifier [Axis]: DAWGS Intermediate Holdings Co., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12],[13]   240   240              
Cost [8],[11],[12],[13]   238   238              
Investment, Identifier [Axis]: DISA Holdings Corp., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,897 [8],[12],[22]   6,897 [8],[12],[22]   6,950 [3],[4],[5]          
Cost   6,782 [8],[12],[22]   6,782 [8],[12],[22]   6,808 [3],[4],[5]          
Investment, Identifier [Axis]: DISA Holdings Corp., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   86 [8],[12],[13],[22]   86 [8],[12],[13],[22]   0 [3],[4],[5],[14]          
Cost   78 [8],[12],[13],[22]   78 [8],[12],[13],[22]   (9) [3],[4],[5],[14]          
Investment, Identifier [Axis]: DataServ Integrations, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[24]           1,871          
Cost [4],[5],[24]           1,843          
Investment, Identifier [Axis]: DataServ Integrations, LLC, Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value [5],[16]           103          
Cost [5],[16]           96          
Investment, Identifier [Axis]: DataServ Integrations, LLC, Preferred Units                      
Schedule of Investments [Line Items]                      
Fair Value [8],[15]   193   193              
Cost [8],[15]   192   192              
Investment, Identifier [Axis]: DataServ Integrations, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[14],[24]           0          
Cost [4],[5],[14],[24]           (6)          
Investment, Identifier [Axis]: David Wood Baking UK Ltd, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   871 [7],[8],[12],[31]   871 [7],[8],[12],[31]   818 [4],[5],[10],[32]          
Cost   825 [7],[8],[12],[31]   825 [7],[8],[12],[31]   820 [4],[5],[10],[32]          
Investment, Identifier [Axis]: DecksDirect, LLC, Class A Units                      
Schedule of Investments [Line Items]                      
Fair Value   0 [8],[15]   0 [8],[15]   0 [5],[16]          
Cost   47 [8],[15]   47 [8],[15]   47 [5],[16]          
Investment, Identifier [Axis]: DecksDirect, LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   0 [8],[15]   0 [8],[15]   0 [5],[16]          
Cost   55 [8],[15]   55 [8],[15]   55 [5],[16]          
Investment, Identifier [Axis]: DecksDirect, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,070 [8],[11],[12]   1,070 [8],[11],[12]   1,383 [3],[4],[5]          
Cost   1,498 [8],[11],[12]   1,498 [8],[11],[12]   1,552 [3],[4],[5]          
Investment, Identifier [Axis]: DecksDirect, LLC, Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value [8]   0   0              
Cost [8]   10   10              
Investment, Identifier [Axis]: DecksDirect, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (14) [8],[11],[12],[13]   (14) [8],[11],[12],[13]   301 [3],[4],[5],[14]          
Cost   95 [8],[11],[12],[13]   95 [8],[11],[12],[13]   343 [3],[4],[5],[14]          
Investment, Identifier [Axis]: Discovery Buyer, L.P., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12],[13]   12,315   12,315              
Cost [8],[11],[12],[13]   12,281   12,281              
Investment, Identifier [Axis]: Discovery Buyer, L.P., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12],[13]   (18)   (18)              
Cost [8],[11],[12],[13]   (20)   (20)              
Investment, Identifier [Axis]: Diversified Packaging Holdings LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   436 [8]   436 [8]   333 [5],[16]          
Cost   277 [8]   277 [8]   277 [5],[16]          
Investment, Identifier [Axis]: Diversified Packaging Holdings LLC, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   802 [8]   802 [8]   717 [5]          
Cost   802 [8]   802 [8]   715 [5]          
Investment, Identifier [Axis]: Dragon Bidco, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[10],[20]           2,585          
Cost [4],[5],[10],[20]           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 [4],[5],[10],[20]           2,202          
Cost [4],[5],[10],[20]           2,333          
Investment, Identifier [Axis]: Dryden 49 Senior Loan Fund, Series 2017-49A, Subordinated Structured Notes                      
Schedule of Investments [Line Items]                      
Fair Value   9 [7],[15],[17]   9 [7],[15],[17]   437 [10],[16],[18]          
Cost   2,043 [7],[15],[17]   2,043 [7],[15],[17]   2,766 [10],[16],[18]          
Investment, Identifier [Axis]: Dune Group, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[10],[14],[20]           91          
Cost [4],[5],[10],[14],[20]           117          
Investment, Identifier [Axis]: Dune Group, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[5],[10]           193          
Cost [3],[4],[5],[10]           204          
Investment, Identifier [Axis]: Dune Group, First Lien Senior Secured Term Loan 3                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[5],[10]           1,164          
Cost [3],[4],[5],[10]           1,218          
Investment, Identifier [Axis]: Dunlipharder B.V., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,000 [7],[8],[11],[12]   1,000 [7],[8],[11],[12]   998 [3],[4],[5],[10]          
Cost   992 [7],[8],[11],[12]   992 [7],[8],[11],[12]   991 [3],[4],[5],[10]          
Investment, Identifier [Axis]: Durare Bidco, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12],[13]   1,389   1,389              
Cost [8],[11],[12],[13]   1,390   1,390              
Investment, Identifier [Axis]: Durare Bidco, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12],[13]   (10)   (10)              
Cost [8],[11],[12],[13]   (9)   (9)              
Investment, Identifier [Axis]: Dwyer Instruments, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   14,478 [8],[11],[12]   14,478 [8],[11],[12]   14,433 [3],[4],[5]          
Cost   14,311 [8],[11],[12]   14,311 [8],[11],[12]   14,426 [3],[4],[5]          
Investment, Identifier [Axis]: EB Development, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,014 [7],[8],[12],[13],[19]   2,014 [7],[8],[12],[13],[19]   1,971 [4],[5],[10],[14],[20]          
Cost   1,790 [7],[8],[12],[13],[19]   1,790 [7],[8],[12],[13],[19]   1,996 [4],[5],[10],[14],[20]          
Investment, Identifier [Axis]: EFC International, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   254 [8],[15]   254 [8],[15]   380 [5],[16]          
Cost   231 [8],[15]   231 [8],[15]   231 [5],[16]          
Investment, Identifier [Axis]: EFC International, Senior Unsecured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   818 [8]   818 [8]   797 [5]          
Cost   804 [8]   804 [8]   787 [5]          
Investment, Identifier [Axis]: EMI Porta Holdco LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   11,147 [8],[11],[12]   11,147 [8],[11],[12]   11,696 [3],[4],[5]          
Cost   11,962 [8],[11],[12]   11,962 [8],[11],[12]   12,268 [3],[4],[5]          
Investment, Identifier [Axis]: EMI Porta Holdco LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   546 [8],[12],[13],[22]   546 [8],[12],[13],[22]   543 [3],[4],[5],[14]          
Cost   749 [8],[12],[13],[22]   749 [8],[12],[13],[22]   683 [3],[4],[5],[14]          
Investment, Identifier [Axis]: EZ SMBO Bidco, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8]   674   674              
Cost [7],[8]   627   627              
Investment, Identifier [Axis]: EZ SMBO Bidco, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8],[12],[46]   907   907              
Cost [7],[8],[12],[46]   912   912              
Investment, Identifier [Axis]: EZ SMBO Bidco, First Lien Senior Secured Term Loan 3                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8],[12],[13],[28]   568   568              
Cost [7],[8],[12],[13],[28]   519   519              
Investment, Identifier [Axis]: Echo Global Logistics, Inc., Partnership Equity                      
Schedule of Investments [Line Items]                      
Fair Value   265 [8],[15]   265 [8],[15]   417 [5],[16]          
Cost   531 [8],[15]   531 [8],[15]   531 [5],[16]          
Investment, Identifier [Axis]: Echo Global Logistics, Inc., Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   9,223 [8],[12],[22]   9,223 [8],[12],[22]   9,450 [4],[5],[23]          
Cost   9,380 [8],[12],[22]   9,380 [8],[12],[22]   9,366 [4],[5],[23]          
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   7,000   7,000   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   139,538   139,538   136,855 [49] 145,799 [49]        
Investment, Identifier [Axis]: Eclipse Business Capital, LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   139,538 [8],[39]   139,538 [8],[39]   136,855 [5],[48]          
Cost   93,052 [8],[39]   93,052 [8],[39]   93,029 [5],[48]          
Investment, Identifier [Axis]: Eclipse Business Capital, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   7,000 [8],[13],[22],[39]   7,000 [8],[13],[22],[39]   10,091 [5],[14],[23],[48]          
Cost   6,938 [8],[13],[22],[39]   6,938 [8],[13],[22],[39]   10,022 [5],[14],[23],[48]          
Investment, Identifier [Axis]: Eclipse Business Capital, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   7,000   7,000   10,091 [49] 5,545 [49]        
Investment, Identifier [Axis]: Eclipse Business Capital, LLC, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,545 [8],[39]   4,545 [8],[39]   4,545 [5],[48]          
Cost   4,525 [8],[39]   4,525 [8],[39]   4,520 [5],[48]          
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 [49] 4,545 [49]        
Investment, Identifier [Axis]: Electric Equipment & Engineering Co., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   316 [8]   316 [8]   307 [5]          
Cost   313 [8]   313 [8]   307 [5]          
Investment, Identifier [Axis]: Electric Equipment & Engineering Co., LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   306 [8],[15]   306 [8],[15]   188 [5],[16]          
Cost   188 [8],[15]   188 [8],[15]   188 [5],[16]          
Investment, Identifier [Axis]: Electrical Components International, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[14],[24]           10,410          
Cost [4],[5],[14],[24]           10,419          
Investment, Identifier [Axis]: Ellkay, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[5]           4,348          
Cost [3],[4],[5]           4,875          
Investment, Identifier [Axis]: Entact Environmental Services, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,294 [8],[11],[12]   6,294 [8],[11],[12]   6,624 [3],[4],[5]          
Cost   6,311 [8],[11],[12]   6,311 [8],[11],[12]   6,671 [3],[4],[5]          
Investment, Identifier [Axis]: Eurofins Digital Testing International LUX Holding SARL, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   617 [7],[8],[12],[25],[28]   617 [7],[8],[12],[25],[28]   831 [4],[5],[10],[26],[40]          
Cost   1,569 [7],[8],[12],[25],[28]   1,569 [7],[8],[12],[25],[28]   1,497 [4],[5],[10],[26],[40]          
Investment, Identifier [Axis]: Eurofins Digital Testing International LUX Holding SARL, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   298 [7],[8],[11],[12],[25]   298 [7],[8],[11],[12],[25]   453 [3],[4],[5],[10],[40]          
Cost   830 [7],[8],[11],[12],[25]   830 [7],[8],[11],[12],[25]   781 [3],[4],[5],[10],[40]          
Investment, Identifier [Axis]: Eurofins Digital Testing International LUX Holding SARL, First Lien Senior Secured Term Loan 3                      
Schedule of Investments [Line Items]                      
Fair Value   938 [7],[8],[12],[25],[31]   938 [7],[8],[12],[25],[31]   1,165 [4],[5],[10],[32],[40]          
Cost   2,397 [7],[8],[12],[25],[31]   2,397 [7],[8],[12],[25],[31]   2,258 [4],[5],[10],[32],[40]          
Investment, Identifier [Axis]: Eurofins Digital Testing International LUX Holding SARL, Senior Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   0 [7],[8],[25]   0 [7],[8],[25]   0 [5],[10],[40]          
Cost   640 [7],[8],[25]   640 [7],[8],[25]   642 [5],[10],[40]          
Investment, Identifier [Axis]: Events Software BidCo Pty Ltd, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,426 [7],[8],[12],[13],[34]   1,426 [7],[8],[12],[13],[34]   1,336 [4],[5],[10],[14],[35]          
Cost   1,823 [7],[8],[12],[13],[34]   1,823 [7],[8],[12],[13],[34]   1,842 [4],[5],[10],[14],[35]          
Investment, Identifier [Axis]: Expert Institute Group Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12],[13]   1,071   1,071              
Cost [8],[11],[12],[13]   1,068   1,068              
Investment, Identifier [Axis]: Expert Institute Group Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12],[13]   (6)   (6)              
Cost [8],[11],[12],[13]   (6)   (6)              
Investment, Identifier [Axis]: Express Wash Acquisition Company, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,256 [8],[11],[12]   3,256 [8],[11],[12]   5,955 [3],[4],[5]          
Cost   3,239 [8],[11],[12]   3,239 [8],[11],[12]   6,313 [3],[4],[5]          
Investment, Identifier [Axis]: Express Wash Acquisition Company, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (1) [8],[11],[12],[13]   (1) [8],[11],[12],[13]   124 [3],[4],[5],[14]          
Cost   (2) [8],[11],[12],[13]   (2) [8],[11],[12],[13]   138 [3],[4],[5],[14]          
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   11,938 [8],[12],[22]   11,938 [8],[12],[22]   11,950 [3],[4],[5]          
Cost   11,909 [8],[12],[22]   11,909 [8],[12],[22]   11,995 [3],[4],[5]          
Investment, Identifier [Axis]: FSS Buyer LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   9,360 [8],[12],[22]   9,360 [8],[12],[22]   4,740 [4],[5],[23]          
Cost   9,360 [8],[12],[22]   9,360 [8],[12],[22]   4,690 [4],[5],[23]          
Investment, Identifier [Axis]: FSS Buyer LLC, LP Interest                      
Schedule of Investments [Line Items]                      
Fair Value   17 [8],[15]   17 [8],[15]   17 [5]          
Cost   12 [8],[15]   12 [8],[15]   12 [5]          
Investment, Identifier [Axis]: FSS Buyer LLC, LP Units                      
Schedule of Investments [Line Items]                      
Fair Value   76 [8],[15]   76 [8],[15]   74 [5],[16]          
Cost   51 [8],[15]   51 [8],[15]   51 [5],[16]          
Investment, Identifier [Axis]: Faraday, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,784 [7],[8],[12],[19]   1,784 [7],[8],[12],[19]   1,552 [4],[5],[10],[14],[20]          
Cost   1,630 [7],[8],[12],[19]   1,630 [7],[8],[12],[19]   1,600 [4],[5],[10],[14],[20]          
Investment, Identifier [Axis]: Featherstone Bidco Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8],[12],[29]   2,268   2,268              
Cost [7],[8],[12],[29]   2,252   2,252              
Investment, Identifier [Axis]: Ferrellgas L.P., Opco Preferred Units                      
Schedule of Investments [Line Items]                      
Fair Value   2,886 [8]   2,886 [8]   2,799 [5]          
Cost   2,799 [8]   2,799 [8]   2,799 [5]          
Investment, Identifier [Axis]: FinThrive Software Intermediate Holdings Inc., Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value   6,706 [8]   6,706 [8]   5,608 [5]          
Cost   10,383 [8]   10,383 [8]   9,830 [5]          
Investment, Identifier [Axis]: Finaxy Holding, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,359 [7],[8],[12],[28]   4,359 [7],[8],[12],[28]   3,872 [4],[5],[10],[26]          
Cost   3,944 [7],[8],[12],[28]   3,944 [7],[8],[12],[28]   3,935 [4],[5],[10],[26]          
Investment, Identifier [Axis]: Finexvet, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,907 [7],[8],[12],[28]   4,907 [7],[8],[12],[28]   4,613 [4],[5],[10],[26]          
Cost   4,888 [7],[8],[12],[28]   4,888 [7],[8],[12],[28]   4,872 [4],[5],[10],[26]          
Investment, Identifier [Axis]: FitzMark Buyer, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,994 [8],[12],[22]   3,994 [8],[12],[22]   4,128 [4],[5],[23]          
Cost   3,977 [8],[12],[22]   3,977 [8],[12],[22]   4,101 [4],[5],[23]          
Investment, Identifier [Axis]: Five Star Holding LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   755 [8],[15]   755 [8],[15]   564 [5],[16]          
Cost   967 [8],[15]   967 [8],[15]   967 [5],[16]          
Investment, Identifier [Axis]: Five Star Holding LLC, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   13,692 [8],[11],[12]   13,692 [8],[11],[12]   13,198 [3],[4],[5]          
Cost   13,513 [8],[11],[12]   13,513 [8],[11],[12]   13,489 [3],[4],[5]          
Investment, Identifier [Axis]: Flexential Issuer, LLC, Structured Secured Note - Class C                      
Schedule of Investments [Line Items]                      
Fair Value           15,339          
Cost           14,885          
Investment, Identifier [Axis]: Flywheel Holdings Segregated Portfolio 2025-2, LP Interest                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8],[15]   2,805   2,805              
Cost [7],[8],[15]   2,777   2,777              
Investment, Identifier [Axis]: Flywheel Re Segregated Portfolio 2022-4, Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value   2,687 [7],[8]   2,687 [7],[8]   3,875 [5],[10],[16]          
Cost   2,828 [7],[8]   2,828 [7],[8]   2,828 [5],[10],[16]          
Investment, Identifier [Axis]: Footco 40 Limited, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   246 [7],[8],[12],[19]   246 [7],[8],[12],[19]   217 [4],[5],[10],[20]          
Cost   223 [7],[8],[12],[19]   223 [7],[8],[12],[19]   223 [4],[5],[10],[20]          
Investment, Identifier [Axis]: Footco 40 Limited, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   1,709 [7],[8],[12],[29]   1,709 [7],[8],[12],[29]   1,588 [4],[5],[10],[14],[30]          
Cost   1,644 [7],[8],[12],[29]   1,644 [7],[8],[12],[29]   1,638 [4],[5],[10],[14],[30]          
Investment, Identifier [Axis]: Forest Buyer, LLC, Class A LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   137 [8]   137 [8]   130 [5],[16]          
Cost   122 [8]   122 [8]   122 [5],[16]          
Investment, Identifier [Axis]: Forest Buyer, LLC, Class B LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   66 [8],[15]   66 [8],[15]   124 [5],[16]          
Cost   0 [8],[15]   0 [8],[15]   0 [5],[16]          
Investment, Identifier [Axis]: Forest Buyer, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,031 [8],[11],[12]   6,031 [8],[11],[12]   6,091 [3],[4],[5]          
Cost   6,017 [8],[11],[12]   6,017 [8],[11],[12]   6,049 [3],[4],[5]          
Investment, Identifier [Axis]: Forest Buyer, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (3) [8],[11],[12],[13]   (3) [8],[11],[12],[13]   (2) [3],[4],[5],[14]          
Cost   (6) [8],[11],[12],[13]   (6) [8],[11],[12],[13]   (6) [3],[4],[5],[14]          
Investment, Identifier [Axis]: Fortis Payment Systems, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[5],[14]           8,815          
Cost [3],[4],[5],[14]           8,841          
Investment, Identifier [Axis]: Fortis Payment Systems, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[5],[14]           (9)          
Cost [3],[4],[5],[14]           (7)          
Investment, Identifier [Axis]: FragilePak LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,508 [8],[11],[12]   4,508 [8],[11],[12]   4,544 [3],[4],[5]          
Cost   4,469 [8],[11],[12]   4,469 [8],[11],[12]   4,487 [3],[4],[5]          
Investment, Identifier [Axis]: FragilePak LLC, Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   735 [8],[15]   735 [8],[15]   767 [5],[16]          
Cost   938 [8],[15]   938 [8],[15]   938 [5],[16]          
Investment, Identifier [Axis]: GB Eagle Buyer, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,173 [8],[11],[12],[13]   6,173 [8],[11],[12],[13]   9,129 [3],[4],[5],[14]          
Cost   6,052 [8],[11],[12],[13]   6,052 [8],[11],[12],[13]   9,038 [3],[4],[5],[14]          
Investment, Identifier [Axis]: GB Eagle Buyer, Inc., Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   1,512 [8]   1,512 [8]   1,350 [5]          
Cost   687 [8]   687 [8]   687 [5]          
Investment, Identifier [Axis]: GB Eagle Buyer, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   868 [8],[11],[12],[13]   868 [8],[11],[12],[13]   (23) [3],[4],[5],[14]          
Cost   831 [8],[11],[12],[13]   831 [8],[11],[12],[13]   (46) [3],[4],[5],[14]          
Investment, Identifier [Axis]: GCDL LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   355 [8]   355 [8]   243 [5],[16]          
Cost   243 [8]   243 [8]   243 [5],[16]          
Investment, Identifier [Axis]: GCDL LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   503 [8],[11],[12],[13]   503 [8],[11],[12],[13]   529 [3],[4],[5],[14]          
Cost   502 [8],[11],[12],[13]   502 [8],[11],[12],[13]   529 [3],[4],[5],[14]          
Investment, Identifier [Axis]: GCDL LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (1) [8],[11],[12],[13]   (1) [8],[11],[12],[13]   (2) [3],[4],[5],[14]          
Cost   (1) [8],[11],[12],[13]   (1) [8],[11],[12],[13]   (2) [3],[4],[5],[14]          
Investment, Identifier [Axis]: GMES LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12],[13]   7,617   7,617              
Cost [8],[11],[12],[13]   7,618   7,618              
Investment, Identifier [Axis]: GMES LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12],[13]   (13)   (13)              
Cost [8],[11],[12],[13]   (13)   (13)              
Investment, Identifier [Axis]: GPNZ II GmbH, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   0 [7],[8],[15]   0 [7],[8],[15]   0 [5],[10],[16]          
Cost   0 [7],[8],[15]   0 [7],[8],[15]   0 [5],[10],[16]          
Investment, Identifier [Axis]: GPNZ II GmbH, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   214 [7],[8],[13]   214 [7],[8],[13]   271 [5],[10]          
Cost   366 [7],[8],[13]   366 [7],[8],[13]   285 [5],[10]          
Investment, Identifier [Axis]: GPNZ II GmbH, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   62 [7],[8]   62 [7],[8]   33 [4],[5],[10],[14]          
Cost   92 [7],[8]   92 [7],[8]   34 [4],[5],[10],[14]          
Investment, Identifier [Axis]: GPNZ II GmbH, First Lien Senior Secured Term Loan 3                      
Schedule of Investments [Line Items]                      
Fair Value   0 [7],[8],[12],[25],[36]   0 [7],[8],[12],[25],[36]   189 [4],[5],[10],[37],[40]          
Cost   444 [7],[8],[12],[25],[36]   444 [7],[8],[12],[25],[36]   446 [4],[5],[10],[37],[40]          
Investment, Identifier [Axis]: Global Academic Group Limited, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   2,680 [7],[8],[12],[34]   2,680 [7],[8],[12],[34]   2,284 [4],[5],[10],[35]          
Cost   2,765 [7],[8],[12],[34]   2,765 [7],[8],[12],[34]   2,530 [4],[5],[10],[35]          
Investment, Identifier [Axis]: Global Academic Group Limited, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   4,146 [7],[8],[12],[13],[50]   4,146 [7],[8],[12],[13],[50]   4,000 [4],[5],[10],[14],[51]          
Cost   4,413 [7],[8],[12],[13],[50]   4,413 [7],[8],[12],[13],[50]   4,389 [4],[5],[10],[14],[51]          
Investment, Identifier [Axis]: Gojo Industries, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   12,677 [8],[12],[22]   12,677 [8],[12],[22]   12,883 [3],[4],[5]          
Cost   12,425 [8],[12],[22]   12,425 [8],[12],[22]   12,874 [3],[4],[5]          
Investment, Identifier [Axis]: Graphpad Software, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[5],[14]           9,499          
Cost [3],[4],[5],[14]           9,457          
Investment, Identifier [Axis]: Graphpad Software, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[5],[14]           (1)          
Cost [3],[4],[5],[14]           (4)          
Investment, Identifier [Axis]: Greenhill II BV, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,763 [7],[8],[12],[13],[19]   1,763 [7],[8],[12],[13],[19]   936 [4],[5],[10],[14],[20]          
Cost   1,577 [7],[8],[12],[13],[19]   1,577 [7],[8],[12],[13],[19]   907 [4],[5],[10],[14],[20]          
Investment, Identifier [Axis]: Groupe Guemas, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,424 [7],[8],[12],[28]   5,424 [7],[8],[12],[28]   4,747 [4],[5],[10],[26]          
Cost   4,833 [7],[8],[12],[28]   4,833 [7],[8],[12],[28]   4,821 [4],[5],[10],[26]          
Investment, Identifier [Axis]: Groupe Product Life, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   496 [7],[8],[12],[13],[19]   496 [7],[8],[12],[13],[19]   871 [4],[5],[10],[14],[20]          
Cost   458 [7],[8],[12],[13],[19]   458 [7],[8],[12],[13],[19]   874 [4],[5],[10],[14],[20]          
Investment, Identifier [Axis]: HEKA Invest, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,504 [7],[8],[12],[13],[19]   5,504 [7],[8],[12],[13],[19]   4,850 [4],[5],[10],[14],[20]          
Cost   4,512 [7],[8],[12],[13],[19]   4,512 [7],[8],[12],[13],[19]   4,497 [4],[5],[10],[14],[20]          
Investment, Identifier [Axis]: HS Advisory Buyer LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12],[13]   1,492   1,492              
Cost [8],[11],[12],[13]   1,493   1,493              
Investment, Identifier [Axis]: HS Advisory Buyer LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12],[13]   (8)   (8)              
Cost [8],[11],[12],[13]   (8)   (8)              
Investment, Identifier [Axis]: HSL Compliance, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8],[12],[13],[29]   2,674   2,674              
Cost [7],[8],[12],[13],[29]   2,551   2,551              
Investment, Identifier [Axis]: HTI Technology & Industries, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   10,342 [8],[11],[12],[13]   10,342 [8],[11],[12],[13]   10,421 [3],[4],[5],[14]          
Cost   11,071 [8],[11],[12],[13]   11,071 [8],[11],[12],[13]   11,052 [3],[4],[5],[14]          
Investment, Identifier [Axis]: HTI Technology & Industries, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (78) [8],[11],[12],[13]   (78) [8],[11],[12],[13]   (70) [3],[4],[5],[14]          
Cost   (2) [8],[11],[12],[13]   (2) [8],[11],[12],[13]   (4) [3],[4],[5],[14]          
Investment, Identifier [Axis]: HW Holdco, LLC (Hanley Wood LLC), First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   10,190 [8],[11],[12]   10,190 [8],[11],[12]   11,081 [3],[4],[5]          
Cost   10,180 [8],[11],[12]   10,180 [8],[11],[12]   11,055 [3],[4],[5]          
Investment, Identifier [Axis]: Haystack Holdings LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8],[12],[13],[33]   6,581   6,581              
Cost [8],[12],[13],[33]   6,508   6,508              
Investment, Identifier [Axis]: Haystack Holdings LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [8],[12],[13],[33]   (1)   (1)              
Cost [8],[12],[13],[33]   (11)   (11)              
Investment, Identifier [Axis]: HeartHealth Bidco Pty Ltd, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   700 [7],[8],[12],[13],[34]   700 [7],[8],[12],[13],[34]   602 [4],[5],[10],[35]          
Cost   770 [7],[8],[12],[13],[34]   770 [7],[8],[12],[13],[34]   704 [4],[5],[10],[35]          
Investment, Identifier [Axis]: Heartland Veterinary Partners, LLC, Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   14,167 [8]   14,167 [8]   12,865 [5]          
Cost   15,070 [8]   15,070 [8]   13,840 [5]          
Investment, Identifier [Axis]: Heavy Construction Systems Specialists, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   7,166 [8],[11],[12]   7,166 [8],[11],[12]   7,221 [3],[4],[5]          
Cost   7,106 [8],[11],[12]   7,106 [8],[11],[12]   7,144 [3],[4],[5]          
Investment, Identifier [Axis]: Heavy Construction Systems Specialists, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [8],[11],[12],[13]   0 [8],[11],[12],[13]   0 [3],[4],[5],[14]          
Cost   (19) [8],[11],[12],[13]   (19) [8],[11],[12],[13]   (26) [3],[4],[5],[14]          
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   3,541 [7],[8],[12],[28]   3,541 [7],[8],[12],[28]   3,042 [4],[5],[10],[26]          
Cost   3,676 [7],[8],[12],[28]   3,676 [7],[8],[12],[28]   3,676 [4],[5],[10],[26]          
Investment, Identifier [Axis]: HemaSource, Inc., Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   133 [8],[15]   133 [8],[15]   124 [5],[16]          
Cost   101 [8],[15]   101 [8],[15]   101 [5],[16]          
Investment, Identifier [Axis]: HemaSource, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,699 [8],[12],[22]   6,699 [8],[12],[22]   7,267 [4],[5],[23]          
Cost   6,577 [8],[12],[22]   6,577 [8],[12],[22]   7,116 [4],[5],[23]          
Investment, Identifier [Axis]: HemaSource, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [8],[12],[13],[22]   0 [8],[12],[13],[22]   0 [4],[5],[14],[23]          
Cost   (30) [8],[12],[13],[22]   (30) [8],[12],[13],[22]   (35) [4],[5],[14],[23]          
Investment, Identifier [Axis]: Herbalife Ltd., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,252 [7],[12],[22]   3,252 [7],[12],[22]   3,294 [4],[10],[23]          
Cost   3,041 [7],[12],[22]   3,041 [7],[12],[22]   3,130 [4],[10],[23]          
Investment, Identifier [Axis]: High Street Buyer Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12],[13]   185   185              
Cost [8],[11],[12],[13]   186   186              
Investment, Identifier [Axis]: Home Care Assistance, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,240 [8],[11],[12]   3,240 [8],[11],[12]   3,524 [3],[4],[5]          
Cost   3,723 [8],[11],[12]   3,723 [8],[11],[12]   3,677 [3],[4],[5]          
Investment, Identifier [Axis]: HomeX Services Group LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,710 [8],[11],[12],[13]   1,710 [8],[11],[12],[13]   1,477 [3],[4],[5],[14]          
Cost   1,680 [8],[11],[12],[13]   1,680 [8],[11],[12],[13]   1,463 [3],[4],[5],[14]          
Investment, Identifier [Axis]: HomeX Services Group LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   34 [8],[11],[12],[13]   34 [8],[11],[12],[13]   (3) [3],[4],[5],[14]          
Cost   29 [8],[11],[12],[13]   29 [8],[11],[12],[13]   (6) [3],[4],[5],[14]          
Investment, Identifier [Axis]: Honour Lane Logistics Holdings Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,667 [7],[8],[12],[33]   6,667 [7],[8],[12],[33]   6,645 [4],[5],[10],[24]          
Cost   6,565 [7],[8],[12],[33]   6,565 [7],[8],[12],[33]   6,542 [4],[5],[10],[24]          
Investment, Identifier [Axis]: Hydratech Holdings, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   8,948 [8],[11],[12],[13]   8,948 [8],[11],[12],[13]   7,413 [3],[4],[5],[14]          
Cost   8,945 [8],[11],[12],[13]   8,945 [8],[11],[12],[13]   7,413 [3],[4],[5],[14]          
Investment, Identifier [Axis]: Hydratech Holdings, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   511 [8],[11],[12],[13]   511 [8],[11],[12],[13]   265 [3],[4],[5],[14]          
Cost   510 [8],[11],[12],[13]   510 [8],[11],[12],[13]   265 [3],[4],[5],[14]          
Investment, Identifier [Axis]: Hygie 31 Holding, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[10],[26]           1,502          
Cost [4],[5],[10],[26]           1,378          
Investment, Identifier [Axis]: Hylan Datacom & Electrical LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value [49]           0 2,013        
Investment, Identifier [Axis]: Hylan Datacom & Electrical LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [49]           0 3,917        
Investment, Identifier [Axis]: Hylan Datacom & Electrical LLC, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [49]           0 4,519        
Investment, Identifier [Axis]: ICREDITWORKS LLC, Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value [8]   10,633   10,633              
Cost [8]   10,627   10,627              
Investment, Identifier [Axis]: ICREDITWORKS LLC, Warrants                      
Schedule of Investments [Line Items]                      
Fair Value [8],[15]   0   0              
Cost [8],[15]   0   0              
Investment, Identifier [Axis]: IM Square, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,894 [7],[8],[12],[19]   2,894 [7],[8],[12],[19]   2,533 [4],[5],[10],[20]          
Cost   2,968 [7],[8],[12],[19]   2,968 [7],[8],[12],[19]   2,960 [4],[5],[10],[20]          
Investment, Identifier [Axis]: ISTO Technologies II, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[24]           6,706          
Cost [4],[5],[24]           6,598          
Investment, Identifier [Axis]: ISTO Technologies II, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[14],[24]           (2)          
Cost [4],[5],[14],[24]           (14)          
Investment, Identifier [Axis]: ITI Intermodal, Inc., Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   984 [8],[15]   984 [8],[15]   915 [5],[16]          
Cost   750 [8],[15]   750 [8],[15]   750 [5],[16]          
Investment, Identifier [Axis]: ITI Intermodal, Inc., First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   795 [8],[11],[12]   795 [8],[11],[12]   800 [4],[5],[24]          
Cost   789 [8],[11],[12]   789 [8],[11],[12]   793 [4],[5],[24]          
Investment, Identifier [Axis]: ITI Intermodal, Inc., First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   11,986 [8],[11],[12]   11,986 [8],[11],[12]   12,079 [4],[5],[24]          
Cost   11,812 [8],[11],[12]   11,812 [8],[11],[12]   11,847 [4],[5],[24]          
Investment, Identifier [Axis]: ITI Intermodal, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   226 [8],[11],[12],[13]   226 [8],[11],[12],[13]   225 [4],[5],[14],[24]          
Cost   209 [8],[11],[12],[13]   209 [8],[11],[12],[13]   203 [4],[5],[14],[24]          
Investment, Identifier [Axis]: Ice House America, L.L.C., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,388 [8],[11],[12],[13]   4,388 [8],[11],[12],[13]   4,482 [3],[4],[5],[14]          
Cost   4,495 [8],[11],[12],[13]   4,495 [8],[11],[12],[13]   4,483 [3],[4],[5],[14]          
Investment, Identifier [Axis]: Ice House America, L.L.C., LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   226 [8],[15]   226 [8],[15]   316 [5],[16]          
Cost   289 [8],[15]   289 [8],[15]   283 [5],[16]          
Investment, Identifier [Axis]: Ice House America, L.L.C., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   372 [8],[11],[12],[13]   372 [8],[11],[12],[13]   186 [3],[4],[5],[14]          
Cost   381 [8],[11],[12],[13]   381 [8],[11],[12],[13]   186 [3],[4],[5],[14]          
Investment, Identifier [Axis]: Infoniqa Holdings GmbH, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,088 [7],[8],[12],[19]   3,088 [7],[8],[12],[19]   2,721 [4],[5],[10],[26]          
Cost   2,931 [7],[8],[12],[19]   2,931 [7],[8],[12],[19]   2,923 [4],[5],[10],[26]          
Investment, Identifier [Axis]: Innovad Group II BV, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   7,243 [7],[8],[12],[19]   7,243 [7],[8],[12],[19]   6,383 [4],[5],[10],[26]          
Cost   7,135 [7],[8],[12],[19]   7,135 [7],[8],[12],[19]   7,116 [4],[5],[10],[26]          
Investment, Identifier [Axis]: Innovad Group II BV, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   1,152 [7],[8],[12],[52]   1,152 [7],[8],[12],[52]   1,012 [4],[5],[10],[53]          
Cost   1,019 [7],[8],[12],[52]   1,019 [7],[8],[12],[52]   1,019 [4],[5],[10],[53]          
Investment, Identifier [Axis]: Innovative XCessories & Services, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[18]           2,746          
Cost [3],[4],[18]           2,802          
Investment, Identifier [Axis]: International Fleet Financing No.2 B.V., Class C Senior Secured Note                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8],[13]   8,769   8,769              
Cost [7],[8],[13]   8,396   8,396              
Investment, Identifier [Axis]: Interstellar Group B.V., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,729 [7],[8],[12],[13],[19]   1,729 [7],[8],[12],[13],[19]   1,509 [4],[5],[10],[14],[20]          
Cost   1,628 [7],[8],[12],[13],[19]   1,628 [7],[8],[12],[13],[19]   1,594 [4],[5],[10],[14],[20]          
Investment, Identifier [Axis]: InvoCare Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,146 [7],[8],[12],[13],[34]   2,146 [7],[8],[12],[13],[34]   1,963 [4],[5],[10],[14],[35]          
Cost   2,070 [7],[8],[12],[13],[34]   2,070 [7],[8],[12],[13],[34]   2,062 [4],[5],[10],[14],[35]          
Investment, Identifier [Axis]: Isagenix International, LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value [5],[16],[18]           0          
Cost [5],[16],[18]           0          
Investment, Identifier [Axis]: Isagenix International, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[5],[18]           160          
Cost [3],[4],[5],[18]           668          
Investment, Identifier [Axis]: Isolstar Holding NV (IPCOM), First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,786 [7],[8],[12],[19]   5,786 [7],[8],[12],[19]   5,075 [4],[5],[10],[20]          
Cost   4,851 [7],[8],[12],[19]   4,851 [7],[8],[12],[19]   4,836 [4],[5],[10],[20]          
Investment, Identifier [Axis]: Ivanti Software Inc, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [11],[12],[17]   937   937              
Cost [11],[12],[17]   871   871              
Investment, Identifier [Axis]: Ivanti Software Inc, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [11],[12],[17]   2,613   2,613              
Cost [11],[12],[17]   6,050   6,050              
Investment, Identifier [Axis]: Ivanti Software, Inc., Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[18]           3,285          
Cost [3],[4],[18]           5,989          
Investment, Identifier [Axis]: JF Acquisition, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[5]           3,736          
Cost [3],[4],[5]           3,709          
Investment, Identifier [Axis]: Jade Bidco Limited (Jane's), First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   1,264 [7],[8],[12],[28]   1,264 [7],[8],[12],[28]   1,112 [4],[5],[10],[26]          
Cost   1,158 [7],[8],[12],[28]   1,158 [7],[8],[12],[28]   1,155 [4],[5],[10],[26]          
Investment, Identifier [Axis]: Jade Bidco Limited (Jane's), First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   6,526 [7],[8],[12],[33]   6,526 [7],[8],[12],[33]   6,579 [4],[5],[10],[24]          
Cost   6,454 [7],[8],[12],[33]   6,454 [7],[8],[12],[33]   6,498 [4],[5],[10],[24]          
Investment, Identifier [Axis]: JetBlue 2019-1 Class B Pass Through Trust, Structured Secured Note - Class B                      
Schedule of Investments [Line Items]                      
Fair Value           2,520          
Cost           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],[14],[48],[54]           40,761          
Cost [10],[14],[48],[54]           35,158          
Investment, Identifier [Axis]: Jocassee Partners LLC, Member Interest                      
Schedule of Investments [Line Items]                      
Fair Value   38,838 [7],[39],[55]   38,838 [7],[39],[55]   40,761 41,053        
Cost [7],[39],[55]   35,158   35,158              
Investment, Identifier [Axis]: Jon Bidco Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,023 [7],[8],[12],[13],[50]   4,023 [7],[8],[12],[13],[50]   3,720 [4],[5],[10],[14],[51]          
Cost   4,696 [7],[8],[12],[13],[50]   4,696 [7],[8],[12],[13],[50]   4,430 [4],[5],[10],[14],[51]          
Investment, Identifier [Axis]: Jones Fish Hatcheries & Distributors LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,466 [8],[12],[33]   4,466 [8],[12],[33]   3,481 [3],[4],[5]          
Cost   4,453 [8],[12],[33]   4,453 [8],[12],[33]   3,434 [3],[4],[5]          
Investment, Identifier [Axis]: Jones Fish Hatcheries & Distributors LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   827 [8]   827 [8]   372 [5]          
Cost   107 [8]   107 [8]   107 [5]          
Investment, Identifier [Axis]: Jones Fish Hatcheries & Distributors LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   80 [8],[12],[13],[33]   80 [8],[12],[13],[33]   0 [3],[4],[5],[14]          
Cost   80 [8],[12],[13],[33]   80 [8],[12],[13],[33]   (4) [3],[4],[5],[14]          
Investment, Identifier [Axis]: KAMC Holdings Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12]   5,353   5,353              
Cost [8],[11],[12]   5,355   5,355              
Investment, Identifier [Axis]: KAMC Holdings Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12],[13]   155   155              
Cost [8],[11],[12],[13]   155   155              
Investment, Identifier [Axis]: Keystone Bidco B.V., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   918 [7],[8],[12],[13],[28]   918 [7],[8],[12],[13],[28]   677 [4],[5],[10],[14],[20]          
Cost   861 [7],[8],[12],[13],[28]   861 [7],[8],[12],[13],[28]   728 [4],[5],[10],[14],[20]          
Investment, Identifier [Axis]: Keystone Bidco B.V., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   10 [7],[8],[12],[13],[28]   10 [7],[8],[12],[13],[28]   18 [4],[5],[10],[14],[20]          
Cost   8 [7],[8],[12],[13],[28]   8 [7],[8],[12],[13],[28]   18 [4],[5],[10],[14],[20]          
Investment, Identifier [Axis]: Kid Distro Holdings, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   13,088 [8],[12],[33]   13,088 [8],[12],[33]   13,156 [3],[4],[5]          
Cost   13,018 [8],[12],[33]   13,018 [8],[12],[33]   13,063 [3],[4],[5]          
Investment, Identifier [Axis]: Kid Distro Holdings, LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   721 [8],[15]   721 [8],[15]   772 [5],[16]          
Cost   638 [8],[15]   638 [8],[15]   638 [5],[16]          
Investment, Identifier [Axis]: LHS Borrower, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8],[12],[22]   9,039   9,039              
Cost [8],[12],[22]   9,040   9,040              
Investment, Identifier [Axis]: LHS Borrower, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [8],[12],[13],[22]   (12)   (12)              
Cost [8],[12],[13],[22]   (12)   (12)              
Investment, Identifier [Axis]: Lambir Bidco Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,282 [7],[8],[12],[13],[28]   2,282 [7],[8],[12],[13],[28]   1,952 [4],[5],[10],[14],[26]          
Cost   2,272 [7],[8],[12],[13],[28]   2,272 [7],[8],[12],[13],[28]   2,159 [4],[5],[10],[14],[26]          
Investment, Identifier [Axis]: Lambir Bidco Limited, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,988 [7],[8]   1,988 [7],[8]   1,721 [5],[10]          
Cost   2,076 [7],[8]   2,076 [7],[8]   1,947 [5],[10]          
Investment, Identifier [Axis]: Lattice Group Holdings Bidco Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[10],[14],[24]           687          
Cost [4],[5],[10],[14],[24]           711          
Investment, Identifier [Axis]: Lattice Group Holdings Bidco Limited, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8],[12],[33]   608   608              
Cost [7],[8],[12],[33]   602   602              
Investment, Identifier [Axis]: Lattice Group Holdings Bidco Limited, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8],[11],[12],[13]   127   127              
Cost [7],[8],[11],[12],[13]   125   125              
Investment, Identifier [Axis]: Lattice Group Holdings Bidco Limited, First Lien Senior Secured Term Loan 3                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8],[12],[31]   154   154              
Cost [7],[8],[12],[31]   155   155              
Investment, Identifier [Axis]: Lattice Group Holdings Bidco Limited, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   35 [7],[8],[12],[33]   35 [7],[8],[12],[33]   (1) [4],[5],[10],[14],[24]          
Cost   35 [7],[8],[12],[33]   35 [7],[8],[12],[33]   (1) [4],[5],[10],[14],[24]          
Investment, Identifier [Axis]: LeadsOnline, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   9,964 [8],[11],[12]   9,964 [8],[11],[12]   10,029 [3],[4],[5]          
Cost   9,914 [8],[11],[12]   9,914 [8],[11],[12]   9,968 [3],[4],[5]          
Investment, Identifier [Axis]: LeadsOnline, LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   199 [8]   199 [8]   180 [5]          
Cost   85 [8]   85 [8]   85 [5]          
Investment, Identifier [Axis]: LeadsOnline, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (7) [8],[11],[12],[13]   (7) [8],[11],[12],[13]   (10) [3],[4],[5],[14]          
Cost   (18) [8],[11],[12],[13]   (18) [8],[11],[12],[13]   (24) [3],[4],[5],[14]          
Investment, Identifier [Axis]: Learfield Communications, LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value [5],[16]           4,085          
Cost [5],[16]           1,921          
Investment, Identifier [Axis]: Learfield Communications, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[23]           5,520          
Cost [4],[23]           5,486          
Investment, Identifier [Axis]: Legal Solutions Holdings, Senior Subordinated Loan                      
Schedule of Investments [Line Items]                      
Fair Value [5],[40],[56]           0          
Cost [5],[40],[56]           10,128          
Investment, Identifier [Axis]: Lifestyle Intermediate II, LLC, Class A Common Units                      
Schedule of Investments [Line Items]                      
Fair Value [15],[17]   0   0              
Cost [15],[17]   0   0              
Investment, Identifier [Axis]: Lifestyle Intermediate II, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,535 [8],[11],[12],[17]   2,535 [8],[11],[12],[17]   2,812 [3],[4],[5],[18]          
Cost   2,903 [8],[11],[12],[17]   2,903 [8],[11],[12],[17]   2,992 [3],[4],[5],[18]          
Investment, Identifier [Axis]: Lockmasters Security Intermediate, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12],[13]   9,312   9,312              
Cost [8],[11],[12],[13]   9,310   9,310              
Investment, Identifier [Axis]: Lockmasters Security Intermediate, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [8],[12],[13],[22]   (6)   (6)              
Cost [8],[12],[13],[22]   (5)   (5)              
Investment, Identifier [Axis]: Long Term Care Group, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   8,395 [8],[11],[12]   8,395 [8],[11],[12]   7,839 [3],[4],[5]          
Cost   8,719 [8],[11],[12]   8,719 [8],[11],[12]   8,676 [3],[4],[5]          
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 [4],[5],[10],[20]           10,829          
Cost [4],[5],[10],[20]           11,395          
Investment, Identifier [Axis]: M-Personal Protection Management GmbH, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8],[12],[19]   4,141   4,141              
Cost [7],[8],[12],[19]   3,697   3,697              
Investment, Identifier [Axis]: MB Purchaser, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,437 [8],[11],[12],[13]   1,437 [8],[11],[12],[13]   2,591 [4],[5],[14],[23]          
Cost   1,427 [8],[11],[12],[13]   1,427 [8],[11],[12],[13]   2,550 [4],[5],[14],[23]          
Investment, Identifier [Axis]: MB Purchaser, LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   89 [8],[15]   89 [8],[15]   82 [5],[16]          
Cost   68 [8],[15]   68 [8],[15]   68 [5],[16]          
Investment, Identifier [Axis]: MB Purchaser, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (1) [8],[11],[12],[13]   (1) [8],[11],[12],[13]   (2) [4],[5],[14],[23]          
Cost   (2) [8],[11],[12],[13]   (2) [8],[11],[12],[13]   (5) [4],[5],[14],[23]          
Investment, Identifier [Axis]: MC Group Ventures Corporation, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   4,782 [8],[11],[12],[13]   4,782 [8],[11],[12],[13]   4,899 [4],[5],[14],[23]          
Cost   5,007 [8],[11],[12],[13]   5,007 [8],[11],[12],[13]   5,016 [4],[5],[14],[23]          
Investment, Identifier [Axis]: MC Group Ventures Corporation, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   4,221 [8],[11],[12],[13]   4,221 [8],[11],[12],[13]   4,036 [4],[5],[14],[24]          
Cost   4,303 [8],[11],[12],[13]   4,303 [8],[11],[12],[13]   4,062 [4],[5],[14],[24]          
Investment, Identifier [Axis]: MC Group Ventures Corporation, Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   598 [8],[15]   598 [8],[15]   681 [5],[16]          
Cost   747 [8],[15]   747 [8],[15]   747 [5],[16]          
Investment, Identifier [Axis]: MI OpCo Holdings, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[23]           6,320          
Cost [4],[23]           5,722          
Investment, Identifier [Axis]: MIV Buyer, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12],[13]   2,621   2,621              
Cost [8],[11],[12],[13]   2,621   2,621              
Investment, Identifier [Axis]: MIV Buyer, LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value [8],[15]   101   101              
Cost [8],[15]   101   101              
Investment, Identifier [Axis]: MIV Buyer, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12],[13]   (6)   (6)              
Cost [8],[11],[12],[13]   (6)   (6)              
Investment, Identifier [Axis]: MNS Buyer, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   348 [8],[12],[22]   348 [8],[12],[22]   662 [3],[4],[5]          
Cost   345 [8],[12],[22]   345 [8],[12],[22]   656 [3],[4],[5]          
Investment, Identifier [Axis]: MNS Buyer, Inc., Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   189 [8],[15]   189 [8],[15]   106 [5],[16]          
Cost   77 [8],[15]   77 [8],[15]   77 [5],[16]          
Investment, Identifier [Axis]: MSI Express Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12],[13]   1,540   1,540              
Cost [8],[11],[12],[13]   1,532   1,532              
Investment, Identifier [Axis]: MSI Express Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12],[13]   990   990              
Cost [8],[11],[12],[13]   988   988              
Investment, Identifier [Axis]: MVC Automotive Group GmbH, Bridge Loan                      
Schedule of Investments [Line Items]                      
Fair Value [43]           0 9,762        
Investment, Identifier [Axis]: MVC Automotive Group GmbH, Common Equity Interest                      
Schedule of Investments [Line Items]                      
Fair Value   9,713 [7],[8],[15],[57],[58]   9,713 [7],[8],[15],[57],[58]   13,741 [5],[10],[16],[42],[56]          
Cost   19,173 [7],[8],[15],[57],[58]   19,173 [7],[8],[15],[57],[58]   19,173 [5],[10],[16],[42],[56]          
Investment, Identifier [Axis]: MVC Automotive Group GmbH, Common Equity Interest                      
Schedule of Investments [Line Items]                      
Fair Value   9,713   9,713   13,741 [43] 15,430 [43]        
Investment, Identifier [Axis]: MVC Automotive Group GmbH, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8],[58]   1,172   1,172              
Cost [7],[8],[58]   1,138   1,138              
Investment, Identifier [Axis]: MVC Automotive Group GmbH, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,172   1,172   0          
Investment, Identifier [Axis]: MVC Private Equity Fund LP, General Partnership Interest                      
Schedule of Investments [Line Items]                      
Fair Value   0   0   0 [10],[16],[42],[56] 24        
Cost [10],[16],[42],[56]           184          
Investment, Identifier [Axis]: MVC Private Equity Fund LP, Limited Partnership Interest                      
Schedule of Investments [Line Items]                      
Fair Value   0   0   11 [10],[16],[42],[56] 981        
Cost [10],[16],[42],[56]           7,282          
Investment, Identifier [Axis]: Magnetite XIX, Limited, Subordinated Notes                      
Schedule of Investments [Line Items]                      
Fair Value   5,129 [7],[11],[12],[17]   5,129 [7],[11],[12],[17]   10,500 [3],[5],[10],[18]          
Cost   5,250 [7],[11],[12],[17]   5,250 [7],[11],[12],[17]   10,357 [3],[5],[10],[18]          
Investment, Identifier [Axis]: Marmoutier Holding B.V., Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8],[15]   0   0              
Cost [7],[8],[15]   0   0              
Investment, Identifier [Axis]: Marmoutier Holding B.V., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   37 [7],[8],[12],[13],[19]   37 [7],[8],[12],[13],[19]   146 [4],[5],[10],[14],[26],[40]          
Cost   65 [7],[8],[12],[13],[19]   65 [7],[8],[12],[13],[19]   2,415 [4],[5],[10],[14],[26],[40]          
Investment, Identifier [Axis]: Marmoutier Holding B.V., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   146 [7],[8],[12],[19]   146 [7],[8],[12],[19]   (53) [4],[5],[10],[14],[26],[40]          
Cost   157 [7],[8],[12],[19]   157 [7],[8],[12],[19]   104 [4],[5],[10],[14],[26],[40]          
Investment, Identifier [Axis]: Marmoutier Holding B.V., Super Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   159 [7],[8],[12],[28]   159 [7],[8],[12],[28]   185 [4],[5],[10],[40]          
Cost   175 [7],[8],[12],[28]   175 [7],[8],[12],[28]   194 [4],[5],[10],[40]          
Investment, Identifier [Axis]: Media Recovery, Inc. (SpotSee), First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   1,753 [8],[11],[12]   1,753 [8],[11],[12]   1,747 [3],[4],[5]          
Cost   1,749 [8],[11],[12]   1,749 [8],[11],[12]   1,746 [3],[4],[5]          
Investment, Identifier [Axis]: Media Recovery, Inc. (SpotSee), First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   3,660 [8],[12],[27]   3,660 [8],[12],[27]   3,775 [4],[5],[45]          
Cost   3,636 [8],[12],[27]   3,636 [8],[12],[27]   4,039 [4],[5],[45]          
Investment, Identifier [Axis]: Media Recovery, Inc. (SpotSee), Revolver 1                      
Schedule of Investments [Line Items]                      
Fair Value   34 [8],[11],[12],[13]   34 [8],[11],[12],[13]   (9) [3],[4],[5],[14]          
Cost   33 [8],[11],[12],[13]   33 [8],[11],[12],[13]   (9) [3],[4],[5],[14]          
Investment, Identifier [Axis]: Media Recovery, Inc. (SpotSee), Revolver 2                      
Schedule of Investments [Line Items]                      
Fair Value   (8) [8],[12],[13],[27]   (8) [8],[12],[13],[27]   (10) [4],[5],[14],[45]          
Cost   (10) [8],[12],[13],[27]   (10) [8],[12],[13],[27]   (11) [4],[5],[14],[45]          
Investment, Identifier [Axis]: Median B.V., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   9,829 [7],[12],[29]   9,829 [7],[12],[29]   8,966 [4],[10],[32]          
Cost   9,954 [7],[12],[29]   9,954 [7],[12],[29]   9,907 [4],[10],[32]          
Investment, Identifier [Axis]: Medical Solutions Parent Holdings, Inc., Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   892 [11],[12]   892 [11],[12]   2,211 [3],[4]          
Cost   4,397 [11],[12]   4,397 [11],[12]   4,394 [3],[4]          
Investment, Identifier [Axis]: Megawatt Acquisitionco, Inc., Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   0 [8],[15]   0 [8],[15]   0 [5],[16]          
Cost   21 [8],[15]   21 [8],[15]   21 [5],[16]          
Investment, Identifier [Axis]: Megawatt Acquisitionco, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,025 [8],[11],[12]   4,025 [8],[11],[12]   3,648 [3],[4],[5]          
Cost   4,067 [8],[11],[12]   4,067 [8],[11],[12]   4,088 [3],[4],[5]          
Investment, Identifier [Axis]: Megawatt Acquisitionco, Inc., Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value   129 [8],[15]   129 [8],[15]   46 [5],[16]          
Cost   184 [8],[15]   184 [8],[15]   184 [5],[16]          
Investment, Identifier [Axis]: Megawatt Acquisitionco, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   66 [8],[11],[12],[13]   66 [8],[11],[12],[13]   108 [3],[4],[5],[14]          
Cost   73 [8],[11],[12],[13]   73 [8],[11],[12],[13]   178 [3],[4],[5],[14]          
Investment, Identifier [Axis]: Mercell Holding AS, Class A Units                      
Schedule of Investments [Line Items]                      
Fair Value   152 [7],[8],[15]   152 [7],[8],[15]   125 [5],[10],[16]          
Cost   111 [7],[8],[15]   111 [7],[8],[15]   111 [5],[10],[16]          
Investment, Identifier [Axis]: Mercell Holding AS, Class B Units                      
Schedule of Investments [Line Items]                      
Fair Value   0 [7],[8],[15]   0 [7],[8],[15]   21 [5],[10],[16]          
Cost   0 [7],[8],[15]   0 [7],[8],[15]   0 [5],[10],[16]          
Investment, Identifier [Axis]: Mercell Holding AS, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,136 [7],[8],[12],[13],[59]   3,136 [7],[8],[12],[13],[59]   2,750 [4],[5],[10],[14],[60]          
Cost   3,159 [7],[8],[12],[13],[59]   3,159 [7],[8],[12],[13],[59]   3,150 [4],[5],[10],[14],[60]          
Investment, Identifier [Axis]: Modern Star Holdings Bidco Pty Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8],[12],[13],[61]   7,374   7,374              
Cost [7],[8],[12],[13],[61]   8,158   8,158              
Investment, Identifier [Axis]: Modern Star Holdings Bidco Pty Limited., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[10],[14],[62]           7,008          
Cost [4],[5],[10],[14],[62]           8,268          
Investment, Identifier [Axis]: Momentum Textiles, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12]   7,233   7,233              
Cost [8],[11],[12]   7,227   7,227              
Investment, Identifier [Axis]: Momentum Textiles, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12],[13]   (7)   (7)              
Cost [8],[11],[12],[13]   (8)   (8)              
Investment, Identifier [Axis]: Moonlight Bidco Limited, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   210 [7],[8],[15]   210 [7],[8],[15]   182 [5],[10],[16]          
Cost   138 [7],[8],[15]   138 [7],[8],[15]   138 [5],[10],[16]          
Investment, Identifier [Axis]: Moonlight Bidco Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,000 [7],[8],[12],[13],[29]   2,000 [7],[8],[12],[13],[29]   1,841 [4],[5],[10],[14],[30]          
Cost   1,891 [7],[8],[12],[13],[29]   1,891 [7],[8],[12],[13],[29]   1,884 [4],[5],[10],[14],[30]          
Investment, Identifier [Axis]: Murphy Midco Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,674 [7],[8],[12],[31]   1,674 [7],[8],[12],[31]   1,641 [4],[5],[10],[32]          
Cost   1,722 [7],[8],[12],[31]   1,722 [7],[8],[12],[31]   1,716 [4],[5],[10],[32]          
Investment, Identifier [Axis]: Music Reports, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,805 [8],[11],[12]   6,805 [8],[11],[12]   6,618 [3],[4],[5]          
Cost   6,892 [8],[11],[12]   6,892 [8],[11],[12]   6,868 [3],[4],[5]          
Investment, Identifier [Axis]: NAW Buyer LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   12,127 [8],[11],[12],[13]   12,127 [8],[11],[12],[13]   11,850 [3],[4],[5],[14]          
Cost   11,817 [8],[11],[12],[13]   11,817 [8],[11],[12],[13]   11,489 [3],[4],[5],[14]          
Investment, Identifier [Axis]: NAW Buyer LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   614 [8]   614 [8]   524 [5]          
Cost   473 [8]   473 [8]   473 [5]          
Investment, Identifier [Axis]: NAW Buyer LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [8],[11],[12],[13]   0 [8],[11],[12],[13]   0 [3],[4],[5],[14]          
Cost   (31) [8],[11],[12],[13]   (31) [8],[11],[12],[13]   (37) [3],[4],[5],[14]          
Investment, Identifier [Axis]: NF Holdco, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,061 [8],[11],[12]   6,061 [8],[11],[12]   6,283 [3],[4],[5]          
Cost   6,111 [8],[11],[12]   6,111 [8],[11],[12]   6,137 [3],[4],[5]          
Investment, Identifier [Axis]: NF Holdco, LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   307 [8],[15]   307 [8],[15]   563 [5],[16]          
Cost   659 [8],[15]   659 [8],[15]   659 [5],[16]          
Investment, Identifier [Axis]: NF Holdco, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   610 [8],[11],[12],[13]   610 [8],[11],[12],[13]   276 [3],[4],[5],[14]          
Cost   621 [8],[11],[12],[13]   621 [8],[11],[12],[13]   253 [3],[4],[5],[14]          
Investment, Identifier [Axis]: NPM Investments 28 B.V., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,139 [7],[8],[12],[13],[19]   2,139 [7],[8],[12],[13],[19]   1,869 [4],[5],[10],[14],[20]          
Cost   1,748 [7],[8],[12],[13],[19]   1,748 [7],[8],[12],[13],[19]   1,741 [4],[5],[10],[14],[20]          
Investment, Identifier [Axis]: Napa Bidco Pty Ltd, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   13,337 [7],[8],[12],[34]   13,337 [7],[8],[12],[34]   12,459 [4],[5],[10],[35]          
Cost   14,309 [7],[8],[12],[34]   14,309 [7],[8],[12],[34]   14,257 [4],[5],[10],[35]          
Investment, Identifier [Axis]: Narda Acquisitionco., Inc., Class A Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value [5],[16]           578          
Cost [5],[16]           459          
Investment, Identifier [Axis]: Narda Acquisitionco., Inc., Class B Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value [5],[16]           743          
Cost [5],[16]           51          
Investment, Identifier [Axis]: Narda Acquisitionco., Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[23]           5,074          
Cost [4],[5],[23]           5,030          
Investment, Identifier [Axis]: Narda Acquisitionco., Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[14],[23]           0          
Cost [4],[5],[14],[23]           (11)          
Investment, Identifier [Axis]: Navia Benefit Solutions, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,528 [8],[12],[22]   5,528 [8],[12],[22]   5,572 [4],[5],[23]          
Cost   5,494 [8],[12],[22]   5,494 [8],[12],[22]   5,518 [4],[5],[23]          
Investment, Identifier [Axis]: NeoxCo, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,809 [7],[8],[12],[28]   2,809 [7],[8],[12],[28]   2,456 [4],[5],[10],[26]          
Cost   2,532 [7],[8],[12],[28]   2,532 [7],[8],[12],[28]   2,525 [4],[5],[10],[26]          
Investment, Identifier [Axis]: Next Holdco, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   22,074 [8],[11],[12],[13]   22,074 [8],[11],[12],[13]   7,320 [3],[4],[5],[14]          
Cost   21,962 [8],[11],[12],[13]   21,962 [8],[11],[12],[13]   7,199 [3],[4],[5],[14]          
Investment, Identifier [Axis]: Next Holdco, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (4) [8],[11],[12],[13]   (4) [8],[11],[12],[13]   0 [3],[4],[5],[14]          
Cost   (8) [8],[11],[12],[13]   (8) [8],[11],[12],[13]   (9) [3],[4],[5],[14]          
Investment, Identifier [Axis]: Northstar Recycling, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   12,511 [8],[11],[12]   12,511 [8],[11],[12]   16,910 [3],[4],[5],[14]          
Cost   12,503 [8],[11],[12]   12,503 [8],[11],[12]   16,911 [3],[4],[5],[14]          
Investment, Identifier [Axis]: Northstar Recycling, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (35) [8],[11],[12],[13]   (35) [8],[11],[12],[13]   (44) [3],[4],[5],[14]          
Cost   (37) [8],[11],[12],[13]   (37) [8],[11],[12],[13]   (44) [3],[4],[5],[14]          
Investment, Identifier [Axis]: OA Buyer, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[23]           8,268          
Cost [4],[5],[23]           8,223          
Investment, Identifier [Axis]: OA Buyer, Inc., Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value [5]           783          
Cost [5]           211          
Investment, Identifier [Axis]: OA Buyer, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[14],[23]           (5)          
Cost [4],[5],[14],[23]           (15)          
Investment, Identifier [Axis]: OAC Holdings I Corp, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,294 [8],[11],[12]   3,294 [8],[11],[12]   3,539 [4],[5],[23]          
Cost   3,260 [8],[11],[12]   3,260 [8],[11],[12]   3,496 [4],[5],[23]          
Investment, Identifier [Axis]: OAC Holdings I Corp, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [8],[11],[12],[13]   0 [8],[11],[12],[13]   0 [4],[5],[14],[23]          
Cost   (12) [8],[11],[12],[13]   (12) [8],[11],[12],[13]   (15) [4],[5],[14],[23]          
Investment, Identifier [Axis]: OG III B.V., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,613 [7],[8],[12],[19]   3,613 [7],[8],[12],[19]   3,241 [4],[5],[10],[20]          
Cost   3,704 [7],[8],[12],[19]   3,704 [7],[8],[12],[19]   3,695 [4],[5],[10],[20]          
Investment, Identifier [Axis]: ORS Buyer, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12]   4,911   4,911              
Cost [8],[11],[12]   4,906   4,906              
Investment, Identifier [Axis]: ORTEC INTERNATIONAL NEWCO B.V., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,074 [7],[8],[12],[19]   1,074 [7],[8],[12],[19]   931 [4],[5],[10],[20]          
Cost   978 [7],[8],[12],[19]   978 [7],[8],[12],[19]   976 [4],[5],[10],[20]          
Investment, Identifier [Axis]: OSP Hamilton Purchaser, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   18,125 [8],[11],[12]   18,125 [8],[11],[12]   13,901 [3],[4],[5],[14]          
Cost   18,088 [8],[11],[12]   18,088 [8],[11],[12]   13,874 [3],[4],[5],[14]          
Investment, Identifier [Axis]: OSP Hamilton Purchaser, LLC, LP Units                      
Schedule of Investments [Line Items]                      
Fair Value   196 [8],[15]   196 [8],[15]   151 [5]          
Cost   174 [8],[15]   174 [8],[15]   174 [5]          
Investment, Identifier [Axis]: OSP Hamilton Purchaser, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   671 [8],[11],[12],[13]   671 [8],[11],[12],[13]   430 [3],[4],[5],[14]          
Cost   667 [8],[11],[12],[13]   667 [8],[11],[12],[13]   427 [3],[4],[5],[14]          
Investment, Identifier [Axis]: Ocelot Holdco LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   2,358 [8],[15]   2,358 [8],[15]   742 [5],[16]          
Cost   0 [8],[15]   0 [8],[15]   0 [5],[16]          
Investment, Identifier [Axis]: Ocelot Holdco LLC, Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value   2,438 [8]   2,438 [8]   2,873 [5]          
Cost   1,562 [8]   1,562 [8]   1,562 [5]          
Investment, Identifier [Axis]: Ocelot Holdco LLC, Super Senior Takeback Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5]           549          
Cost [4],[5]           549          
Investment, Identifier [Axis]: Ocelot Holdco LLC, Takeback Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,933 [8]   2,933 [8]   2,933 [4],[5]          
Cost   2,933 [8]   2,933 [8]   2,933 [4],[5]          
Investment, Identifier [Axis]: Ocular Therapeutix, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,837 [7],[8],[12],[22]   4,837 [7],[8],[12],[22]   4,849 [4],[5],[10],[23]          
Cost   3,845 [7],[8],[12],[22]   3,845 [7],[8],[12],[22]   3,832 [4],[5],[10],[23]          
Investment, Identifier [Axis]: Offen Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [5],[18],[23]           3,681          
Cost [5],[18],[23]           3,681          
Investment, Identifier [Axis]: Oracle Vision Bidco Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,955 [7],[8],[12],[31]   2,955 [7],[8],[12],[31]   2,802 [4],[5],[10],[32]          
Cost   3,184 [7],[8],[12],[31]   3,184 [7],[8],[12],[31]   3,175 [4],[5],[10],[32]          
Investment, Identifier [Axis]: Origin Bidco Limited, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   345 [7],[8],[12],[19]   345 [7],[8],[12],[19]   301 [4],[5],[10],[20]          
Cost   356 [7],[8],[12],[19]   356 [7],[8],[12],[19]   355 [4],[5],[10],[20]          
Investment, Identifier [Axis]: Origin Bidco Limited, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   528 [7],[8],[11],[12]   528 [7],[8],[11],[12]   522 [3],[4],[5],[10]          
Cost   527 [7],[8],[11],[12]   527 [7],[8],[11],[12]   525 [3],[4],[5],[10]          
Investment, Identifier [Axis]: Owl Intermediate Holdings, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12],[13]   2,456   2,456              
Cost [8],[11],[12],[13]   2,454   2,454              
Investment, Identifier [Axis]: Owl Intermediate Holdings, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12],[13]   (20)   (20)              
Cost [8],[11],[12],[13]   (22)   (22)              
Investment, Identifier [Axis]: PDQ.Com Corporation, Class A-2 Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   32 [8],[15]   32 [8],[15]   42 [5],[16]          
Cost   14 [8],[15]   14 [8],[15]   29 [5],[16]          
Investment, Identifier [Axis]: PDQ.Com Corporation, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   18,368 [8],[11],[12],[13]   18,368 [8],[11],[12],[13]   14,514 [3],[4],[5],[14]          
Cost   18,226 [8],[11],[12],[13]   18,226 [8],[11],[12],[13]   14,558 [3],[4],[5],[14]          
Investment, Identifier [Axis]: PSP Intermediate 4, LLC, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   949 [7],[8],[12],[19]   949 [7],[8],[12],[19]   844 [4],[5],[10],[14],[20]          
Cost   852 [7],[8],[12],[19]   852 [7],[8],[12],[19]   846 [4],[5],[10],[14],[20]          
Investment, Identifier [Axis]: PSP Intermediate 4, LLC, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   1,394 [7],[8],[11],[12]   1,394 [7],[8],[11],[12]   1,408 [3],[4],[5],[10]          
Cost   1,397 [7],[8],[11],[12]   1,397 [7],[8],[11],[12]   1,394 [3],[4],[5],[10]          
Investment, Identifier [Axis]: Panoche Energy Center LLC, First Lien Senior Secured Bond                      
Schedule of Investments [Line Items]                      
Fair Value   3,046 [8]   3,046 [8]   3,695 [5]          
Cost   2,876 [8]   2,876 [8]   3,458 [5]          
Investment, Identifier [Axis]: Pare SAS (SAS Maurice MARLE), First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   2,780 [7],[8],[12],[19]   2,780 [7],[8],[12],[19]   2,688 [4],[5],[10],[26]          
Cost   2,625 [7],[8],[12],[19]   2,625 [7],[8],[12],[19]   2,873 [4],[5],[10],[26]          
Investment, Identifier [Axis]: Pare SAS (SAS Maurice MARLE), First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   1,400 [7],[8],[11],[12]   1,400 [7],[8],[11],[12]   1,500 [3],[4],[5],[10]          
Cost   1,400 [7],[8],[11],[12]   1,400 [7],[8],[11],[12]   1,500 [3],[4],[5],[10]          
Investment, Identifier [Axis]: Parkview Dental Holdings LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[14],[23]           609          
Cost [4],[5],[14],[23]           608          
Investment, Identifier [Axis]: Parkview Dental Holdings LLC, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [8],[12],[22]   29   29              
Cost [8],[12],[22]   29   29              
Investment, Identifier [Axis]: Parkview Dental Holdings LLC, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [8],[12],[22]   593   593              
Cost [8],[12],[22]   586   586              
Investment, Identifier [Axis]: Parkview Dental Holdings LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   350 [8],[15]   350 [8],[15]   263 [5],[16]          
Cost   298 [8],[15]   298 [8],[15]   298 [5],[16]          
Investment, Identifier [Axis]: Parkview Dental Holdings LLC, Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value [8]   38   38              
Cost [8]   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   2,116 [7],[8],[12],[19]   2,116 [7],[8],[12],[19]   2,045 [4],[5],[10],[20]          
Cost   1,961 [7],[8],[12],[19]   1,961 [7],[8],[12],[19]   2,140 [4],[5],[10],[20]          
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 [7],[8],[11],[12]   2,397 [7],[8],[11],[12]   2,628 [3],[4],[5],[10]          
Cost   2,394 [7],[8],[11],[12]   2,394 [7],[8],[11],[12]   2,613 [3],[4],[5],[10]          
Investment, Identifier [Axis]: Perimeter Master Note Business Trust, Structured Secured Note - Class A                      
Schedule of Investments [Line Items]                      
Fair Value   180 [7],[8]   180 [7],[8]   177 [5],[10]          
Cost   182 [7],[8]   182 [7],[8]   182 [5],[10]          
Investment, Identifier [Axis]: Perimeter Master Note Business Trust, Structured Secured Note - Class B                      
Schedule of Investments [Line Items]                      
Fair Value   181 [7],[8]   181 [7],[8]   178 [5],[10]          
Cost   182 [7],[8]   182 [7],[8]   182 [5],[10]          
Investment, Identifier [Axis]: Perimeter Master Note Business Trust, Structured Secured Note - Class C                      
Schedule of Investments [Line Items]                      
Fair Value   181 [7],[8]   181 [7],[8]   180 [5],[10]          
Cost   182 [7],[8]   182 [7],[8]   182 [5],[10]          
Investment, Identifier [Axis]: Perimeter Master Note Business Trust, Structured Secured Note - Class D                      
Schedule of Investments [Line Items]                      
Fair Value   180 [7],[8]   180 [7],[8]   178 [5],[10]          
Cost   182 [7],[8]   182 [7],[8]   182 [5],[10]          
Investment, Identifier [Axis]: Perimeter Master Note Business Trust, Structured Secured Note - Class E                      
Schedule of Investments [Line Items]                      
Fair Value   9,148 [7],[8]   9,148 [7],[8]   8,904 [5],[10]          
Cost   9,274 [7],[8]   9,274 [7],[8]   9,274 [5],[10]          
Investment, Identifier [Axis]: Permaconn BidCo Pty Ltd, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,715 [7],[8],[12],[34]   2,715 [7],[8],[12],[34]   2,537 [4],[5],[10],[35]          
Cost   2,717 [7],[8],[12],[34]   2,717 [7],[8],[12],[34]   2,710 [4],[5],[10],[35]          
Investment, Identifier [Axis]: Polara Enterprises, L.L.C., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   948 [8],[12],[22]   948 [8],[12],[22]   957 [3],[4],[5]          
Cost   940 [8],[12],[22]   940 [8],[12],[22]   947 [3],[4],[5]          
Investment, Identifier [Axis]: Polara Enterprises, L.L.C., Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   1,942 [8]   1,942 [8]   1,229 [5]          
Cost   741 [8]   741 [8]   741 [5]          
Investment, Identifier [Axis]: Polara Enterprises, L.L.C., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   506 [8],[12],[13],[22]   506 [8],[12],[13],[22]   0 [3],[4],[5],[14]          
Cost   496 [8],[12],[13],[22]   496 [8],[12],[13],[22]   (5) [3],[4],[5],[14]          
Investment, Identifier [Axis]: Policy Services Company, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   47,578 [8],[11],[12]   47,578 [8],[11],[12]   52,940 [3],[4],[5]          
Cost   52,230 [8],[11],[12]   52,230 [8],[11],[12]   52,938 [3],[4],[5]          
Investment, Identifier [Axis]: Policy Services Company, LLC, Warrants - Class A                      
Schedule of Investments [Line Items]                      
Fair Value   0 [8],[15]   0 [8],[15]   1,262 [5],[16]          
Cost   0 [8],[15]   0 [8],[15]   0 [5],[16]          
Investment, Identifier [Axis]: Policy Services Company, LLC, Warrants - Class B                      
Schedule of Investments [Line Items]                      
Fair Value   0 [8],[15]   0 [8],[15]   426 [5],[16]          
Cost   0 [8],[15]   0 [8],[15]   0 [5],[16]          
Investment, Identifier [Axis]: Policy Services Company, LLC, Warrants - Class CC                      
Schedule of Investments [Line Items]                      
Fair Value   0 [8],[15]   0 [8],[15]   0 [5],[16]          
Cost   0 [8],[15]   0 [8],[15]   0 [5],[16]          
Investment, Identifier [Axis]: Policy Services Company, LLC, Warrants - Class D                      
Schedule of Investments [Line Items]                      
Fair Value   0 [8],[15]   0 [8],[15]   122 [5],[16]          
Cost   0 [8],[15]   0 [8],[15]   0 [5],[16]          
Investment, Identifier [Axis]: Polymer Solutions Group Holdings, LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   0 [8],[15],[17]   0 [8],[15],[17]   0 [5],[16]          
Cost   0 [8],[15],[17]   0 [8],[15],[17]   0 [5],[16]          
Investment, Identifier [Axis]: Polymer Solutions Group Holdings, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   363 [8],[12],[17],[22],[25]   363 [8],[12],[17],[22],[25]   554 [4],[5],[18],[23],[40]          
Cost   994 [8],[12],[17],[22],[25]   994 [8],[12],[17],[22],[25]   993 [4],[5],[18],[23],[40]          
Investment, Identifier [Axis]: PowerGEM Buyer, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   9,672 [8],[11],[12],[13]   9,672 [8],[11],[12],[13]   6,710 [3],[4],[5],[14]          
Cost   9,626 [8],[11],[12],[13]   9,626 [8],[11],[12],[13]   6,776 [3],[4],[5],[14]          
Investment, Identifier [Axis]: PowerGEM Buyer, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [8],[11],[12],[13]   0 [8],[11],[12],[13]   (26) [3],[4],[5],[14]          
Cost   (23) [8],[11],[12],[13]   (23) [8],[11],[12],[13]   (25) [3],[4],[5],[14]          
Investment, Identifier [Axis]: Premium Franchise Brands, LLC, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   7,378 [8],[12],[33]   7,378 [8],[12],[33]   7,377 [3],[4],[5]          
Cost   7,387 [8],[12],[33]   7,387 [8],[12],[33]   7,425 [3],[4],[5]          
Investment, Identifier [Axis]: Premium Franchise Brands, LLC, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   2,717 [8],[12],[33]   2,717 [8],[12],[33]   2,694 [3],[4],[5]          
Cost   2,674 [8],[12],[33]   2,674 [8],[12],[33]   2,670 [3],[4],[5]          
Investment, Identifier [Axis]: Premium Invest, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   9,802 [7],[8],[12],[13],[19]   9,802 [7],[8],[12],[13],[19]   8,750 [4],[5],[10],[14],[20]          
Cost   8,908 [7],[8],[12],[13],[19]   8,908 [7],[8],[12],[13],[19]   8,879 [4],[5],[10],[14],[20]          
Investment, Identifier [Axis]: Preqin MC Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[10],[24]           2,789          
Cost [4],[5],[10],[24]           2,740          
Investment, Identifier [Axis]: Pro-Vision Solutions Holdings, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   7,652 [8],[12],[22]   7,652 [8],[12],[22]   7,662 [3],[4],[5]          
Cost   7,632 [8],[12],[22]   7,632 [8],[12],[22]   7,656 [3],[4],[5]          
Investment, Identifier [Axis]: Pro-Vision Solutions Holdings, LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   241 [8],[15]   241 [8],[15]   249 [5],[16]          
Cost   236 [8],[15]   236 [8],[15]   236 [5],[16]          
Investment, Identifier [Axis]: Pro-Vision Solutions Holdings, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   125 [8],[12],[13],[22]   125 [8],[12],[13],[22]   (28) [3],[4],[5],[14]          
Cost   121 [8],[12],[13],[22]   121 [8],[12],[13],[22]   (29) [3],[4],[5],[14]          
Investment, Identifier [Axis]: Process Equipment, Inc. (ProcessBarron), First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,251 [8],[12],[33]   5,251 [8],[12],[33]   5,338 [4],[5],[24]          
Cost   5,288 [8],[12],[33]   5,288 [8],[12],[33]   5,335 [4],[5],[24]          
Investment, Identifier [Axis]: Process Insights Acquisition, Inc., Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   106 [8],[15]   106 [8],[15]   237 [5],[16]          
Cost   281 [8],[15]   281 [8],[15]   281 [5],[16]          
Investment, Identifier [Axis]: Process Insights Acquisition, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,144 [8],[11],[12]   5,144 [8],[11],[12]   5,134 [3],[4],[5],[14]          
Cost   5,610 [8],[11],[12]   5,610 [8],[11],[12]   5,157 [3],[4],[5],[14]          
Investment, Identifier [Axis]: Process Insights Acquisition, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   915 [8],[11],[12]   915 [8],[11],[12]   889 [3],[4],[5],[14]          
Cost   998 [8],[11],[12]   998 [8],[11],[12]   891 [3],[4],[5],[14]          
Investment, Identifier [Axis]: ProfitOptics, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,599 [8],[12],[22]   1,599 [8],[12],[22]   1,613 [4],[5],[23]          
Cost   1,586 [8],[12],[22]   1,586 [8],[12],[22]   1,595 [4],[5],[23]          
Investment, Identifier [Axis]: ProfitOptics, LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   416 [8],[15]   416 [8],[15]   198 [5],[16]          
Cost   161 [8],[15]   161 [8],[15]   161 [5],[16]          
Investment, Identifier [Axis]: ProfitOptics, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   97 [8],[12],[13],[22]   97 [8],[12],[13],[22]   242 [4],[5],[14],[23]          
Cost   93 [8],[12],[13],[22]   93 [8],[12],[13],[22]   237 [4],[5],[14],[23]          
Investment, Identifier [Axis]: ProfitOptics, LLC, Senior Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   78 [8]   78 [8]   76 [5]          
Cost   81 [8]   81 [8]   81 [5]          
Investment, Identifier [Axis]: Proppants Holding, LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value [5],[18]           0          
Cost [5],[18]           0          
Investment, Identifier [Axis]: Protego Bidco B.V., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[10],[26]           1,646          
Cost [4],[5],[10],[26]           1,889          
Investment, Identifier [Axis]: Protego Bidco B.V., First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8],[12],[28]   1,599   1,599              
Cost [7],[8],[12],[28]   1,600   1,600              
Investment, Identifier [Axis]: Protego Bidco B.V., First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8],[12],[28]   320   320              
Cost [7],[8],[12],[28]   294   294              
Investment, Identifier [Axis]: Protego Bidco B.V., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   2,302 [7],[8],[12],[28]   2,302 [7],[8],[12],[28]   1,974 [4],[5],[10],[26]          
Cost   2,296 [7],[8],[12],[28]   2,296 [7],[8],[12],[28]   2,290 [4],[5],[10],[26]          
Investment, Identifier [Axis]: QPE7 SPV1 BidCo Pty Ltd, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,817 [7],[8],[12],[61]   1,817 [7],[8],[12],[61]   1,694 [4],[5],[10],[62]          
Cost   1,980 [7],[8],[12],[61]   1,980 [7],[8],[12],[61]   1,976 [4],[5],[10],[62]          
Investment, Identifier [Axis]: Qima Finance LTD, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8],[11],[12],[13]   2,786   2,786              
Cost [7],[8],[11],[12],[13]   2,788   2,788              
Investment, Identifier [Axis]: Qualified Industries, LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   127 [8],[15]   127 [8],[15]   61 [5],[16]          
Cost   3 [8],[15]   3 [8],[15]   3 [5],[16]          
Investment, Identifier [Axis]: Qualified Industries, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   7,864 [8],[12],[33]   7,864 [8],[12],[33]   2,567 [4],[5],[24]          
Cost   7,863 [8],[12],[33]   7,863 [8],[12],[33]   2,566 [4],[5],[24]          
Investment, Identifier [Axis]: Qualified Industries, LLC, Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value   188 [8],[15]   188 [8],[15]   175 [5],[16]          
Cost   144 [8],[15]   144 [8],[15]   144 [5],[16]          
Investment, Identifier [Axis]: Qualified Industries, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (4) [8],[12],[13],[33]   (4) [8],[12],[13],[33]   (5) [4],[5],[14],[24]          
Cost   (4) [8],[12],[13],[33]   (4) [8],[12],[13],[33]   (5) [4],[5],[14],[24]          
Investment, Identifier [Axis]: Questel Unite, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[5],[10]           7,059          
Cost [3],[4],[5],[10]           7,010          
Investment, Identifier [Axis]: R1 Holdings, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,052 [8],[11],[12]   6,052 [8],[11],[12]   6,135 [4],[5],[23]          
Cost   5,950 [8],[11],[12]   5,950 [8],[11],[12]   5,973 [4],[5],[23]          
Investment, Identifier [Axis]: R1 Holdings, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   1,850 [8],[11],[12],[13]   1,850 [8],[11],[12],[13]   472 [4],[5],[14],[23]          
Cost   1,815 [8],[11],[12],[13]   1,815 [8],[11],[12],[13]   425 [4],[5],[14],[23]          
Investment, Identifier [Axis]: RA Outdoors, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   9,349 [8],[12],[17],[25],[33]   9,349 [8],[12],[17],[25],[33]   12,732 [3],[4],[5],[18]          
Cost   14,700 [8],[12],[17],[25],[33]   14,700 [8],[12],[17],[25],[33]   13,506 [3],[4],[5],[18]          
Investment, Identifier [Axis]: RA Outdoors, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   894 [8],[12],[17],[25],[33]   894 [8],[12],[17],[25],[33]   1,217 [3],[4],[5],[18]          
Cost   1,430 [8],[12],[17],[25],[33]   1,430 [8],[12],[17],[25],[33]   1,316 [3],[4],[5],[18]          
Investment, Identifier [Axis]: REP SEKO MERGER SUB LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   0 [8],[15]   0 [8],[15]   4,595 [5],[16]          
Cost   5,403 [8],[15]   5,403 [8],[15]   5,403 [5],[16]          
Investment, Identifier [Axis]: REP SEKO MERGER SUB LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,277 [8],[11],[12]   2,277 [8],[11],[12]   1,015 [3],[4],[5]          
Cost   2,685 [8],[11],[12]   2,685 [8],[11],[12]   995 [3],[4],[5]          
Investment, Identifier [Axis]: REP SEKO MERGER SUB LLC, First Out Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,074 [8],[11],[12]   1,074 [8],[11],[12]   2,577 [3],[4],[5]          
Cost   1,057 [8],[11],[12]   1,057 [8],[11],[12]   2,577 [3],[4],[5]          
Investment, Identifier [Axis]: RKD Group, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12],[13]   12,057   12,057              
Cost [8],[11],[12],[13]   12,045   12,045              
Investment, Identifier [Axis]: RKD Group, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12],[13]   472   472              
Cost [8],[11],[12],[13]   471   471              
Investment, Identifier [Axis]: ROI Solutions LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   18,131 [8],[11],[12],[13]   18,131 [8],[11],[12],[13]   17,973 [3],[4],[5],[14]          
Cost   17,902 [8],[11],[12],[13]   17,902 [8],[11],[12],[13]   17,989 [3],[4],[5],[14]          
Investment, Identifier [Axis]: ROI Solutions LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (13) [8],[11],[12],[13]   (13) [8],[11],[12],[13]   (55) [3],[4],[5],[14]          
Cost   (44) [8],[11],[12],[13]   (44) [8],[11],[12],[13]   (52) [3],[4],[5],[14]          
Investment, Identifier [Axis]: RPX Corporation, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   21,582 [8],[12],[22]   21,582 [8],[12],[22]   21,638 [3],[4],[5]          
Cost   21,478 [8],[12],[22]   21,478 [8],[12],[22]   21,608 [3],[4],[5]          
Investment, Identifier [Axis]: RPX Corporation, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (24) [8],[12],[13],[22]   (24) [8],[12],[13],[22]   (39) [3],[4],[5],[14]          
Cost   (37) [8],[12],[13],[22]   (37) [8],[12],[13],[22]   (42) [3],[4],[5],[14]          
Investment, Identifier [Axis]: RTIC Subsidiary Holdings, LLC, Class A Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value   0 [8],[15],[17]   0 [8],[15],[17]   0 [5],[16],[18]          
Cost   4 [8],[15],[17]   4 [8],[15],[17]   4 [5],[16],[18]          
Investment, Identifier [Axis]: RTIC Subsidiary Holdings, LLC, Class B Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value   0 [8],[15],[17]   0 [8],[15],[17]   0 [5],[16],[18]          
Cost   0 [8],[15],[17]   0 [8],[15],[17]   0 [5],[16],[18]          
Investment, Identifier [Axis]: RTIC Subsidiary Holdings, LLC, Class C Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value   42 [8],[15],[17]   42 [8],[15],[17]   57 [5],[16],[18]          
Cost   450 [8],[15],[17]   450 [8],[15],[17]   450 [5],[16],[18]          
Investment, Identifier [Axis]: RTIC Subsidiary Holdings, LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   0 [8],[15],[17]   0 [8],[15],[17]   0 [5],[16],[18]          
Cost   0 [8],[15],[17]   0 [8],[15],[17]   0 [5],[16],[18]          
Investment, Identifier [Axis]: Randys Holdings, Inc., Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value [8],[15]   704   704              
Cost [8],[15]   533   533              
Investment, Identifier [Axis]: Randys Holdings, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   12,329 [8],[11],[12],[13]   12,329 [8],[11],[12],[13]   10,873 [3],[4],[5],[14]          
Cost   12,101 [8],[11],[12],[13]   12,101 [8],[11],[12],[13]   10,758 [3],[4],[5],[14]          
Investment, Identifier [Axis]: Randys Holdings, Inc., Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value [5],[16]           622          
Cost [5],[16]           533          
Investment, Identifier [Axis]: Randys Holdings, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   1,144 [8],[11],[12],[13]   1,144 [8],[11],[12],[13]   613 [3],[4],[5],[14]          
Cost   1,113 [8],[11],[12],[13]   1,113 [8],[11],[12],[13]   597 [3],[4],[5],[14]          
Investment, Identifier [Axis]: Rapid Buyer LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,224 [8],[11],[12],[13]   5,224 [8],[11],[12],[13]   5,313 [4],[5],[14],[24]          
Cost   5,337 [8],[11],[12],[13]   5,337 [8],[11],[12],[13]   5,321 [4],[5],[14],[24]          
Investment, Identifier [Axis]: Rapid Buyer LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   413 [8],[15]   413 [8],[15]   533 [5],[16]          
Cost   533 [8],[15]   533 [8],[15]   533 [5],[16]          
Investment, Identifier [Axis]: Rapid Buyer LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (35) [8],[11],[12],[13]   (35) [8],[11],[12],[13]   (22) [3],[4],[5],[14]          
Cost   (15) [8],[11],[12],[13]   (15) [8],[11],[12],[13]   (21) [3],[4],[5],[14]          
Investment, Identifier [Axis]: Real Chemistry Intermediate III, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8],[12],[13],[22]   3,665   3,665              
Cost [8],[12],[13],[22]   3,669   3,669              
Investment, Identifier [Axis]: Real Chemistry Intermediate III, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [8],[12],[13],[22]   (4)   (4)              
Cost [8],[12],[13],[22]   (5)   (5)              
Investment, Identifier [Axis]: Recovery Point Systems, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   11,206 [8],[11],[12]   11,206 [8],[11],[12]   11,294 [3],[4],[5]          
Cost   11,172 [8],[11],[12]   11,172 [8],[11],[12]   11,232 [3],[4],[5]          
Investment, Identifier [Axis]: Recovery Point Systems, Inc., Partnership Equity                      
Schedule of Investments [Line Items]                      
Fair Value   95 [8],[15]   95 [8],[15]   81 [5],[16]          
Cost   187 [8],[15]   187 [8],[15]   187 [5],[16]          
Investment, Identifier [Axis]: Renovation Parent Holdings, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,439 [8],[11],[12]   4,439 [8],[11],[12]   4,308 [3],[4],[5]          
Cost   4,629 [8],[11],[12]   4,629 [8],[11],[12]   4,651 [3],[4],[5]          
Investment, Identifier [Axis]: Renovation Parent Holdings, LLC, Partnership Equity                      
Schedule of Investments [Line Items]                      
Fair Value   140 [8],[15]   140 [8],[15]   85 [5],[16]          
Cost   202 [8],[15]   202 [8],[15]   202 [5],[16]          
Investment, Identifier [Axis]: Resolute Investment Managers, Inc., Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   67 [8],[15],[17]   67 [8],[15],[17]   98 [5],[16],[18]          
Cost   0 [8],[15],[17]   0 [8],[15],[17]   0 [5],[16],[18]          
Investment, Identifier [Axis]: Rhondda Financing No. 1 DAC, Structured - Junior Note                      
Schedule of Investments [Line Items]                      
Fair Value [5],[10],[14]           26,044          
Cost [5],[10],[14]           25,713          
Investment, Identifier [Axis]: Riedel Beheer B.V., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,215 [7],[8],[12],[19]   2,215 [7],[8],[12],[19]   1,963 [4],[5],[10],[20]          
Cost   2,271 [7],[8],[12],[19]   2,271 [7],[8],[12],[19]   2,265 [4],[5],[10],[20]          
Investment, Identifier [Axis]: Rocade Holdings LLC, Common LP Units                      
Schedule of Investments [Line Items]                      
Fair Value   1,198 [8],[39]   1,198 [8],[39]   243 [5],[16],[48],[49] 844 [49]        
Cost   0 [8],[39]   0 [8],[39]   0 [5],[16],[48]          
Investment, Identifier [Axis]: Rocade Holdings LLC, Preferred LP Units                      
Schedule of Investments [Line Items]                      
Fair Value   89,559 [8],[11],[13],[39]   89,559 [8],[11],[13],[39]   83,000 [3],[5],[14],[48],[49] 73,113 [49]        
Cost   89,564 [8],[11],[13],[39]   89,564 [8],[11],[13],[39]   82,989 [3],[5],[14],[48]          
Investment, Identifier [Axis]: Rock Labor LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,449 [8],[12],[22]   6,449 [8],[12],[22]   6,426 [3],[4],[5]          
Cost   6,344 [8],[12],[22]   6,344 [8],[12],[22]   6,372 [3],[4],[5]          
Investment, Identifier [Axis]: Rock Labor LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   1,368 [8]   1,368 [8]   1,127 [5]          
Cost   1,252 [8]   1,252 [8]   1,252 [5]          
Investment, Identifier [Axis]: Rock Labor LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (7) [8],[11],[12],[13]   (7) [8],[11],[12],[13]   (19) [3],[4],[5],[14]          
Cost   (22) [8],[11],[12],[13]   (22) [8],[11],[12],[13]   (26) [3],[4],[5],[14]          
Investment, Identifier [Axis]: Royal Buyer, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[5]           8,098          
Cost [3],[4],[5]           8,006          
Investment, Identifier [Axis]: Royal Buyer, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[5],[14]           (2)          
Cost [3],[4],[5],[14]           (22)          
Investment, Identifier [Axis]: Ruffalo Noel Levitz, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[5]           6,792          
Cost [3],[4],[5]           9,931          
Investment, Identifier [Axis]: Ruffalo Noel Levitz, LLC, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12],[25]   2,412   2,412              
Cost [8],[11],[12],[25]   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 [8],[12],[22]   6   6              
Cost [8],[12],[22]   6   6              
Investment, Identifier [Axis]: Ruffalo Noel Levitz, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [8],[12],[13],[22]   0   0              
Cost [8],[12],[13],[22]   (3)   (3)              
Investment, Identifier [Axis]: Russell Investments US Institutional Holdco, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   516 [8],[11],[12]   516 [8],[11],[12]   508 [3],[4],[5]          
Cost   496 [8],[11],[12]   496 [8],[11],[12]   491 [3],[4],[5]          
Investment, Identifier [Axis]: SBP Holdings LP, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   8,624 [8],[12],[13],[22]   8,624 [8],[12],[13],[22]   8,648 [4],[5],[14],[23]          
Cost   8,440 [8],[12],[13],[22]   8,440 [8],[12],[13],[22]   8,445 [4],[5],[14],[23]          
Investment, Identifier [Axis]: SBP Holdings LP, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (5) [8],[12],[13],[22]   (5) [8],[12],[13],[22]   (13) [3],[4],[5],[14]          
Cost   (35) [8],[12],[13],[22]   (35) [8],[12],[13],[22]   (44) [3],[4],[5],[14]          
Investment, Identifier [Axis]: SCP Medical Products, LLC., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12]   2,016   2,016              
Cost [8],[11],[12]   2,015   2,015              
Investment, Identifier [Axis]: SCP Medical Products, LLC., LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value [8],[15]   52   52              
Cost [8],[15]   53   53              
Investment, Identifier [Axis]: SCP Medical Products, LLC., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12],[13]   (2)   (2)              
Cost [8],[11],[12],[13]   (3)   (3)              
Investment, Identifier [Axis]: SISU ACQUISITIONCO., INC., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,956 [8],[11],[12]   6,956 [8],[11],[12]   6,591 [3],[4],[5],[14]          
Cost   7,207 [8],[11],[12]   7,207 [8],[11],[12]   7,236 [3],[4],[5],[14]          
Investment, Identifier [Axis]: SPATCO Energy Solutions, LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   195 [8],[15]   195 [8],[15]   280 [5],[16]          
Cost   278 [8],[15]   278 [8],[15]   274 [5],[16]          
Investment, Identifier [Axis]: SPATCO Energy Solutions, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   7,237 [8],[11],[12],[13]   7,237 [8],[11],[12],[13]   6,990 [3],[4],[5],[14]          
Cost   7,198 [8],[11],[12],[13]   7,198 [8],[11],[12],[13]   6,962 [3],[4],[5],[14]          
Investment, Identifier [Axis]: SPATCO Energy Solutions, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (14) [8],[11],[12],[13]   (14) [8],[11],[12],[13]   (18) [3],[4],[5],[14]          
Cost   (19) [8],[11],[12],[13]   (19) [8],[11],[12],[13]   (22) [3],[4],[5],[14]          
Investment, Identifier [Axis]: SSCP Pegasus Midco Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   7,087 [7],[8],[12],[29]   7,087 [7],[8],[12],[29]   4,368 [4],[5],[10],[14],[30]          
Cost   6,768 [7],[8],[12],[29]   6,768 [7],[8],[12],[29]   4,489 [4],[5],[10],[14],[30]          
Investment, Identifier [Axis]: SSCP Spring Bidco 3 Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,019 [7],[8],[12],[31]   1,019 [7],[8],[12],[31]   941 [4],[5],[10],[32]          
Cost   938 [7],[8],[12],[31]   938 [7],[8],[12],[31]   935 [4],[5],[10],[32]          
Investment, Identifier [Axis]: SVI International LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   641 [8],[11],[12]   641 [8],[11],[12]   583 [3],[4],[5],[14]          
Cost   631 [8],[11],[12]   631 [8],[11],[12]   577 [3],[4],[5],[14]          
Investment, Identifier [Axis]: SVI International LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   364 [8]   364 [8]   277 [5]          
Cost   208 [8]   208 [8]   208 [5]          
Investment, Identifier [Axis]: SVI International LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [8],[11],[12],[13]   0 [8],[11],[12],[13]   (1) [3],[4],[5],[14]          
Cost   (1) [8],[11],[12],[13]   (1) [8],[11],[12],[13]   (1) [3],[4],[5],[14]          
Investment, Identifier [Axis]: Saab Purchaser, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   13,525 [8],[11],[12]   13,525 [8],[11],[12]   17,592 [3],[4],[5],[14]          
Cost   13,539 [8],[11],[12]   13,539 [8],[11],[12]   17,596 [3],[4],[5],[14]          
Investment, Identifier [Axis]: Saab Purchaser, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (24) [8],[11],[12],[13]   (24) [8],[11],[12],[13]   (24) [3],[4],[5],[14]          
Cost   (21) [8],[11],[12],[13]   (21) [8],[11],[12],[13]   (23) [3],[4],[5],[14]          
Investment, Identifier [Axis]: Safety Products Holdings, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   14,697 [8],[11],[12]   14,697 [8],[11],[12]   14,812 [3],[4],[5]          
Cost   14,636 [8],[11],[12]   14,636 [8],[11],[12]   14,716 [3],[4],[5]          
Investment, Identifier [Axis]: Safety Products Holdings, LLC, Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value   504 [8],[15]   504 [8],[15]   537 [5],[16]          
Cost   380 [8],[15]   380 [8],[15]   380 [5],[16]          
Investment, Identifier [Axis]: Sanoptis S.A.R.L., First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   4,250 [7],[8],[12],[13],[28]   4,250 [7],[8],[12],[13],[28]   3,692 [4],[5],[10],[14],[26]          
Cost   3,742 [7],[8],[12],[13],[28]   3,742 [7],[8],[12],[13],[28]   3,711 [4],[5],[10],[14],[26]          
Investment, Identifier [Axis]: Sanoptis S.A.R.L., First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   3,256 [7],[8],[12],[63]   3,256 [7],[8],[12],[63]   2,788 [4],[5],[10],[53]          
Cost   2,785 [7],[8],[12],[63]   2,785 [7],[8],[12],[63]   2,730 [4],[5],[10],[53]          
Investment, Identifier [Axis]: Sanoptis S.A.R.L., First Lien Senior Secured Term Loan 3                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[10],[53]           46          
Cost [4],[5],[10],[53]           49          
Investment, Identifier [Axis]: Sansidor BV, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,020 [7],[8],[12],[13],[19]   1,020 [7],[8],[12],[13],[19]   534 [4],[5],[10],[14],[20]          
Cost   975 [7],[8],[12],[13],[19]   975 [7],[8],[12],[13],[19]   576 [4],[5],[10],[14],[20]          
Investment, Identifier [Axis]: Scaled Agile, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,589 [8],[11],[12]   1,589 [8],[11],[12]   1,605 [3],[4],[5]          
Cost   1,803 [8],[11],[12]   1,803 [8],[11],[12]   1,764 [3],[4],[5]          
Investment, Identifier [Axis]: Scaled Agile, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   299 [8],[11],[12]   299 [8],[11],[12]   302 [3],[4],[5]          
Cost   339 [8],[11],[12]   339 [8],[11],[12]   332 [3],[4],[5]          
Investment, Identifier [Axis]: Scout Bidco B.V., First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   3,525 [7],[8],[12],[28]   3,525 [7],[8],[12],[28]   3,297 [4],[5],[10],[20]          
Cost   3,371 [7],[8],[12],[28]   3,371 [7],[8],[12],[28]   3,361 [4],[5],[10],[20]          
Investment, Identifier [Axis]: Scout Bidco B.V., First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   416 [7],[8],[12],[33]   416 [7],[8],[12],[33]   442 [3],[4],[5],[10]          
Cost   443 [7],[8],[12],[33]   443 [7],[8],[12],[33]   443 [3],[4],[5],[10]          
Investment, Identifier [Axis]: Scout Bidco B.V., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   384 [7],[8],[12],[13],[28]   384 [7],[8],[12],[13],[28]   (14) [4],[5],[10],[14],[20]          
Cost   442 [7],[8],[12],[13],[28]   442 [7],[8],[12],[13],[28]   (5) [4],[5],[10],[14],[20]          
Investment, Identifier [Axis]: Screenvision, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12]   5,102   5,102              
Cost [8],[11],[12]   5,101   5,101              
Investment, Identifier [Axis]: Screenvision, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12],[13]   (11)   (11)              
Cost [8],[11],[12],[13]   (11)   (11)              
Investment, Identifier [Axis]: Screenvision, LLC, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12]   32,545   32,545              
Cost [8],[11],[12]   32,516   32,516              
Investment, Identifier [Axis]: Security Holdings B.V, Bridge Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,823   6,823   6,655 [43] 6,328 [43]        
Investment, Identifier [Axis]: Security Holdings B.V, Common Stock Series A                      
Schedule of Investments [Line Items]                      
Fair Value   460   460   399 [43] 311 [43]        
Investment, Identifier [Axis]: Security Holdings B.V, Common Stock Series B                      
Schedule of Investments [Line Items]                      
Fair Value   42,946   42,946   37,296 [43] 29,080 [43]        
Investment, Identifier [Axis]: Security Holdings B.V, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   6,227   6,227   5,333 [43] 3,866 [43]        
Investment, Identifier [Axis]: Security Holdings B.V, Senior Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   11,543   11,543   11,191 [43] 10,867 [43]        
Investment, Identifier [Axis]: Security Holdings B.V, Senior Unsecured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,845   2,845   2,293 [43] 2,236 [43]        
Investment, Identifier [Axis]: Security Holdings B.V., Bridge Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,823 [7],[8],[57],[58]   6,823 [7],[8],[57],[58]   6,655 [5],[10],[42],[56]          
Cost   6,823 [7],[8],[57],[58]   6,823 [7],[8],[57],[58]   6,655 [5],[10],[42],[56]          
Investment, Identifier [Axis]: Security Holdings B.V., Common Stock Series A                      
Schedule of Investments [Line Items]                      
Fair Value   460 [7],[8],[15],[57],[58]   460 [7],[8],[15],[57],[58]   399 [5],[10],[16],[42],[56]          
Cost   560 [7],[8],[15],[57],[58]   560 [7],[8],[15],[57],[58]   560 [5],[10],[16],[42],[56]          
Investment, Identifier [Axis]: Security Holdings B.V., Common Stock Series B                      
Schedule of Investments [Line Items]                      
Fair Value   42,946 [7],[8],[57],[58]   42,946 [7],[8],[57],[58]   37,296 [5],[10],[16],[42],[56]          
Cost   35,192 [7],[8],[57],[58]   35,192 [7],[8],[57],[58]   35,192 [5],[10],[16],[42],[56]          
Investment, Identifier [Axis]: Security Holdings B.V., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   6,227 [7],[8],[13],[57],[58]   6,227 [7],[8],[13],[57],[58]   5,333 [5],[10],[14],[42],[56]          
Cost   5,814 [7],[8],[13],[57],[58]   5,814 [7],[8],[13],[57],[58]   5,650 [5],[10],[14],[42],[56]          
Investment, Identifier [Axis]: Security Holdings B.V., Senior Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   11,543 [7],[8],[57],[58]   11,543 [7],[8],[57],[58]   11,191 [5],[10],[42],[56]          
Cost   11,544 [7],[8],[57],[58]   11,544 [7],[8],[57],[58]   11,191 [5],[10],[42],[56]          
Investment, Identifier [Axis]: Security Holdings B.V., Senior Unsecured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,845 [7],[8],[57],[58]   2,845 [7],[8],[57],[58]   2,293 [5],[10],[42],[56]          
Cost   2,761 [7],[8],[57],[58]   2,761 [7],[8],[57],[58]   2,526 [5],[10],[42],[56]          
Investment, Identifier [Axis]: Selenium Designated Activity Company, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8],[12],[36]   3,167   3,167              
Cost [7],[8],[12],[36]   2,906   2,906              
Investment, Identifier [Axis]: Sereni Capital NV, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[10],[26]           903          
Cost [4],[5],[10],[26]           926          
Investment, Identifier [Axis]: Sereni Capital NV, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[10],[26]           1,524          
Cost [4],[5],[10],[26]           1,564          
Investment, Identifier [Axis]: Serta Simmons Bedding LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   895 [15]   895 [15]   655 [16]          
Cost   1,630 [15]   1,630 [15]   1,630 [16]          
Investment, Identifier [Axis]: Shelf Bidco Ltd, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   4,620 [7],[8],[17]   4,620 [7],[8],[17]   4,668 [5],[10]          
Cost   1,200 [7],[8],[17]   1,200 [7],[8],[17]   1,200 [5],[10]          
Investment, Identifier [Axis]: Shelf Bidco Ltd, Second Out Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   12,070 [7],[8],[11],[12]   12,070 [7],[8],[11],[12]   12,153 [3],[4],[5],[10]          
Cost   12,068 [7],[8],[11],[12]   12,068 [7],[8],[11],[12]   12,154 [3],[4],[5],[10]          
Investment, Identifier [Axis]: Sierra Senior Loan Strategy JV I LLC, Member Interest                      
Schedule of Investments [Line Items]                      
Fair Value [10],[18],[48],[54]           41,453          
Cost [10],[18],[48],[54]           48,441          
Investment, Identifier [Axis]: Sierra Senior Loan Strategy JV I LLC, Member Interest                      
Schedule of Investments [Line Items]                      
Fair Value   38,338 [7],[17],[39],[55]   38,338 [7],[17],[39],[55]   41,453 39,172        
Cost [7],[17],[39],[55]   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   1,980 [7],[8],[12],[13],[19]   1,980 [7],[8],[12],[13],[19]   1,858 [4],[5],[10],[14],[26]          
Cost   1,949 [7],[8],[12],[13],[19]   1,949 [7],[8],[12],[13],[19]   1,943 [4],[5],[10],[14],[26]          
Investment, Identifier [Axis]: Skyvault Holdings LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   15,641 [8],[13],[39]   15,641 [8],[13],[39]   3,586 [5],[14],[48]          
Cost   15,642 [8],[13],[39]   15,642 [8],[13],[39]   3,586 [5],[14],[48]          
Investment, Identifier [Axis]: Skyvault Holdings LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   15,641   15,641   3,586 [49] 0 [49]        
Investment, Identifier [Axis]: Skyvault Holdings LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   5,214 [8],[15],[39]   5,214 [8],[15],[39]   1,195 [5],[16],[48]          
Cost   5,223 [8],[15],[39]   5,223 [8],[15],[39]   1,195 [5],[16],[48]          
Investment, Identifier [Axis]: Skyvault Holdings LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   5,214   5,214   1,195 [49] 0 [49]        
Investment, Identifier [Axis]: SmartShift Group, Inc., Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   568 [8],[15]   568 [8],[15]   483 [5],[16]          
Cost   275 [8],[15]   275 [8],[15]   275 [5],[16]          
Investment, Identifier [Axis]: SmartShift Group, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   12,846 [8],[12],[33]   12,846 [8],[12],[33]   12,944 [3],[4],[5]          
Cost   12,616 [8],[12],[33]   12,616 [8],[12],[33]   12,732 [3],[4],[5]          
Investment, Identifier [Axis]: SmartShift Group, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [8],[12],[13],[33]   0 [8],[12],[13],[33]   0 [3],[4],[5],[14]          
Cost   (27) [8],[12],[13],[33]   (27) [8],[12],[13],[33]   (32) [3],[4],[5],[14]          
Investment, Identifier [Axis]: Smartling, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   10,357 [8],[12],[33]   10,357 [8],[12],[33]   10,437 [3],[4],[5]          
Cost   10,275 [8],[12],[33]   10,275 [8],[12],[33]   10,328 [3],[4],[5]          
Investment, Identifier [Axis]: Smartling, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [8],[12],[13],[33]   0 [8],[12],[13],[33]   0 [3],[4],[5],[14]          
Cost   (8) [8],[12],[13],[33]   (8) [8],[12],[13],[33]   (11) [3],[4],[5],[14]          
Investment, Identifier [Axis]: Smile Brands Group Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12]   4,592   4,592              
Cost [8],[11],[12]   5,314   5,314              
Investment, Identifier [Axis]: Smile Brands Group Inc., First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[5]           1,230          
Cost [3],[4],[5]           1,348          
Investment, Identifier [Axis]: Smile Brands Group Inc., First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[5]           3,477          
Cost [3],[4],[5]           3,805          
Investment, Identifier [Axis]: Solo Buyer, L.P., Common Equity                      
Schedule of Investments [Line Items]                      
Fair Value   300 [8]   300 [8]   325 [5],[16]          
Cost   516 [8]   516 [8]   516 [5],[16]          
Investment, Identifier [Axis]: Solo Buyer, L.P., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   14,851 [8],[11],[12]   14,851 [8],[11],[12]   14,826 [3],[4],[5]          
Cost   14,955 [8],[11],[12]   14,955 [8],[11],[12]   15,033 [3],[4],[5]          
Investment, Identifier [Axis]: Solo Buyer, L.P., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   816 [8],[11],[12],[13]   816 [8],[11],[12],[13]   466 [3],[4],[5],[14]          
Cost   838 [8],[11],[12],[13]   838 [8],[11],[12],[13]   499 [3],[4],[5],[14]          
Investment, Identifier [Axis]: Sonicwall US Holdings Inc, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [11],[12]   2,742   2,742              
Cost [11],[12]   2,834   2,834              
Investment, Identifier [Axis]: Sound Point CLO XX, Ltd., Subordinated Structured Notes                      
Schedule of Investments [Line Items]                      
Fair Value   32 [7],[15],[17]   32 [7],[15],[17]   61 [10],[16],[18]          
Cost   1,389 [7],[15],[17]   1,389 [7],[15],[17]   1,389 [10],[16],[18]          
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   2,282 [8],[11],[12]   2,282 [8],[11],[12]   2,057 [4],[5],[14],[24]          
Cost   2,263 [8],[11],[12]   2,263 [8],[11],[12]   2,044 [4],[5],[14],[24]          
Investment, Identifier [Axis]: Sparus Holdings, LLC (f/k/a Sparus Holdings, Inc.), Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [8],[11],[12],[13]   0 [8],[11],[12],[13]   (1) [4],[5],[14],[24]          
Cost   (1) [8],[11],[12],[13]   (1) [8],[11],[12],[13]   (2) [4],[5],[14],[24]          
Investment, Identifier [Axis]: Spatial Business Systems LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   14,654 [8],[12],[22]   14,654 [8],[12],[22]   14,706 [3],[4],[5]          
Cost   14,613 [8],[12],[22]   14,613 [8],[12],[22]   14,695 [3],[4],[5]          
Investment, Identifier [Axis]: Spatial Business Systems LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (14) [8],[12],[13],[22]   (14) [8],[12],[13],[22]   (21) [3],[4],[5],[14]          
Cost   (18) [8],[12],[13],[22]   (18) [8],[12],[13],[22]   (22) [3],[4],[5],[14]          
Investment, Identifier [Axis]: Starnmeer B.V., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,472 [7],[8],[12],[33]   2,472 [7],[8],[12],[33]   2,500 [4],[5],[10],[24]          
Cost   2,488 [7],[8],[12],[33]   2,488 [7],[8],[12],[33]   2,482 [4],[5],[10],[24]          
Investment, Identifier [Axis]: Superjet Buyer, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   7,171 [8],[11],[12],[13]   7,171 [8],[11],[12],[13]   17,712 [3],[4],[5],[14]          
Cost   7,173 [8],[11],[12],[13]   7,173 [8],[11],[12],[13]   17,760 [3],[4],[5],[14]          
Investment, Identifier [Axis]: Superjet Buyer, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (18) [8],[11],[12],[13]   (18) [8],[11],[12],[13]   (38) [3],[4],[5],[14]          
Cost   (15) [8],[11],[12],[13]   (15) [8],[11],[12],[13]   (29) [3],[4],[5],[14]          
Investment, Identifier [Axis]: Swoop Intermediate III, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8],[12],[13],[22]   1,977   1,977              
Cost [8],[12],[13],[22]   1,960   1,960              
Investment, Identifier [Axis]: Swoop Intermediate III, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [8],[12],[13],[22]   0   0              
Cost [8],[12],[13],[22]   (4)   (4)              
Investment, Identifier [Axis]: Syniverse Holdings, Inc., Series A Preferred Equity                      
Schedule of Investments [Line Items]                      
Fair Value   11,136 [8]   11,136 [8]   10,076 [5]          
Cost   10,812 [8]   10,812 [8]   10,167 [5]          
Investment, Identifier [Axis]: TA KHP Aggregator, L.P., Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value [8],[15]   47   47              
Cost [8],[15]   47   47              
Investment, Identifier [Axis]: TA KHP Aggregator, L.P., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12],[13]   1,013   1,013              
Cost [8],[11],[12],[13]   1,012   1,012              
Investment, Identifier [Axis]: TA KHP Aggregator, L.P., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12],[13]   (4)   (4)              
Cost [8],[11],[12],[13]   (4)   (4)              
Investment, Identifier [Axis]: TA KHP Aggregator, L.P., Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8]   2,224   2,224              
Cost [8]   2,217   2,217              
Investment, Identifier [Axis]: TA SL Cayman Aggregator Corp., Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   91 [8],[15]   91 [8],[15]   84 [5],[16]          
Cost   50 [8],[15]   50 [8],[15]   50 [5],[16]          
Investment, Identifier [Axis]: TA SL Cayman Aggregator Corp., Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,148 [8]   3,148 [8]   2,785 [5]          
Cost   3,131 [8]   3,131 [8]   2,764 [5]          
Investment, Identifier [Axis]: TAPCO Buyer LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   9,491 [8],[12],[22]   9,491 [8],[12],[22]   13,517 [3],[4],[5],[14]          
Cost   9,485 [8],[12],[22]   9,485 [8],[12],[22]   13,523 [3],[4],[5],[14]          
Investment, Identifier [Axis]: TAPCO Buyer LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   451 [8],[15]   451 [8],[15]   252 [5],[16]          
Cost   364 [8],[15]   364 [8],[15]   252 [5],[16]          
Investment, Identifier [Axis]: TAPCO Buyer LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (18) [8],[12],[13],[22]   (18) [8],[12],[13],[22]   (44) [3],[4],[5],[14]          
Cost   (18) [8],[12],[13],[22]   (18) [8],[12],[13],[22]   (43) [3],[4],[5],[14]          
Investment, Identifier [Axis]: THG Acquisition, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,114 [8],[12],[13],[22]   5,114 [8],[12],[13],[22]   10,187 [4],[5],[14],[23]          
Cost   5,099 [8],[12],[13],[22]   5,099 [8],[12],[13],[22]   10,190 [4],[5],[14],[23]          
Investment, Identifier [Axis]: THG Acquisition, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   102 [8],[12],[13],[22]   102 [8],[12],[13],[22]   97 [4],[5],[14],[23]          
Cost   99 [8],[12],[13],[22]   99 [8],[12],[13],[22]   98 [4],[5],[14],[23]          
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12],[13]   14,111   14,111              
Cost [8],[11],[12],[13]   13,889   13,889              
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[5]           2,572          
Cost [3],[4],[5]           2,573          
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[5]           953          
Cost [3],[4],[5]           949          
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., First Lien Senior Secured Term Loan 3                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[5]           1,192          
Cost [3],[4],[5]           1,190          
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., First Lien Senior Secured Term Loan 4                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[5],[14]           7,837          
Cost [3],[4],[5],[14]           7,840          
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   33 [8]   33 [8]   26 [5]          
Cost   5 [8]   5 [8]   5 [5]          
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [8],[11],[12],[13]   0 [8],[11],[12],[13]   (4) [3],[4],[5],[14]          
Cost   (5) [8],[11],[12],[13]   (5) [8],[11],[12],[13]   (5) [3],[4],[5],[14]          
Investment, Identifier [Axis]: Tank Holding Corp, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   7,763 [8],[12],[22]   7,763 [8],[12],[22]   7,792 [4],[5],[24]          
Cost   7,756 [8],[12],[22]   7,756 [8],[12],[22]   7,794 [4],[5],[24]          
Investment, Identifier [Axis]: Tank Holding Corp, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   2,996 [8],[12],[22]   2,996 [8],[12],[22]   2,868 [4],[5],[14],[23]          
Cost   2,965 [8],[12],[22]   2,965 [8],[12],[22]   2,836 [4],[5],[14],[23]          
Investment, Identifier [Axis]: Tank Holding Corp, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (9) [8],[12],[13],[22]   (9) [8],[12],[13],[22]   (12) [4],[5],[14],[24]          
Cost   (8) [8],[12],[13],[22]   (8) [8],[12],[13],[22]   (11) [4],[5],[14],[24]          
Investment, Identifier [Axis]: Tanqueray Bidco Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,776 [7],[8],[12],[13],[29]   1,776 [7],[8],[12],[13],[29]   1,643 [4],[5],[10],[14],[30]          
Cost   1,531 [7],[8],[12],[13],[29]   1,531 [7],[8],[12],[13],[29]   1,518 [4],[5],[10],[14],[30]          
Investment, Identifier [Axis]: Team Air Distributing, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [5]           35          
Cost [5]           35          
Investment, Identifier [Axis]: Team Air Distributing, LLC, Partnership Equity                      
Schedule of Investments [Line Items]                      
Fair Value   429 [8],[15]   429 [8],[15]   625 [5],[16]          
Cost   523 [8],[15]   523 [8],[15]   523 [5],[16]          
Investment, Identifier [Axis]: Team Air Distributing, LLC, Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   741 [8]   741 [8]   702 [5]          
Cost   741 [8]   741 [8]   705 [5]          
Investment, Identifier [Axis]: Technology Service Stream BidCo Pty Ltd, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   812 [7],[8],[12],[13],[34]   812 [7],[8],[12],[13],[34]   677 [4],[5],[10],[14],[21]          
Cost   808 [7],[8],[12],[13],[34]   808 [7],[8],[12],[13],[34]   725 [4],[5],[10],[14],[21]          
Investment, Identifier [Axis]: Techone B.V., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,112 [7],[8],[12],[19]   4,112 [7],[8],[12],[19]   3,609 [4],[5],[10],[20]          
Cost   3,827 [7],[8],[12],[19]   3,827 [7],[8],[12],[19]   3,816 [4],[5],[10],[20]          
Investment, Identifier [Axis]: Techone B.V., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (2) [7],[8],[12],[13],[19]   (2) [7],[8],[12],[13],[19]   (4) [4],[5],[10],[14],[20]          
Cost   (23) [7],[8],[12],[13],[19]   (23) [7],[8],[12],[13],[19]   (24) [4],[5],[10],[14],[20]          
Investment, Identifier [Axis]: Tencarva Machinery Company, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,688 [8],[11],[12],[13]   6,688 [8],[11],[12],[13]   8,364 [3],[4],[5]          
Cost   6,674 [8],[11],[12],[13]   6,674 [8],[11],[12],[13]   8,368 [3],[4],[5]          
Investment, Identifier [Axis]: Tencarva Machinery Company, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (24) [8],[11],[12],[13]   (24) [8],[11],[12],[13]   (18) [3],[4],[5],[14]          
Cost   (19) [8],[11],[12],[13]   (19) [8],[11],[12],[13]   (15) [3],[4],[5],[14]          
Investment, Identifier [Axis]: Terrybear, Inc., Partnership Equity                      
Schedule of Investments [Line Items]                      
Fair Value   14 [8],[15]   14 [8],[15]   120 [5],[16]          
Cost   239 [8],[15]   239 [8],[15]   239 [5],[16]          
Investment, Identifier [Axis]: Terrybear, Inc., Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   265 [8]   265 [8]   268 [5]          
Cost   289 [8]   289 [8]   282 [5]          
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   13,682 [8],[11],[12],[13]   13,682 [8],[11],[12],[13]   2,647 [3],[4],[5]          
Cost   13,676 [8],[11],[12],[13]   13,676 [8],[11],[12],[13]   2,621 [3],[4],[5]          
Investment, Identifier [Axis]: The Caprock Group, Inc. (aka TA/TCG Holdings, LLC), Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (20) [8],[11],[12],[13]   (20) [8],[11],[12],[13]   0 [3],[4],[5],[14]          
Cost   (18) [8],[11],[12],[13]   (18) [8],[11],[12],[13]   (7) [3],[4],[5],[14]          
Investment, Identifier [Axis]: The Caprock Group, Inc. (aka TA/TCG Holdings, LLC), Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[24]           3,791          
Cost [4],[5],[24]           3,750          
Investment, Identifier [Axis]: The Octave Music Group, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   59 [11],[12]   59 [11],[12]   3,595 [3],[4]          
Cost   60 [11],[12]   60 [11],[12]   3,593 [3],[4]          
Investment, Identifier [Axis]: The Octave Music Group, Inc., Partnership Equity                      
Schedule of Investments [Line Items]                      
Fair Value   1,963 [8],[15]   1,963 [8],[15]   2,180 [5]          
Cost   677 [8],[15]   677 [8],[15]   677 [5]          
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 [16],[48],[54]           7,208          
Cost [16],[48],[54]           22,897          
Investment, Identifier [Axis]: Thompson Rivers LLC, Member Interest                      
Schedule of Investments [Line Items]                      
Fair Value   4,768 [15],[39],[55]   4,768 [15],[39],[55]   7,208 13,365        
Cost [15],[39],[55]   20,500   20,500              
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   8,304 [8],[11],[12]   8,304 [8],[11],[12]   8,518 [3],[4],[5]          
Cost   11,184 [8],[11],[12]   11,184 [8],[11],[12]   11,030 [3],[4],[5]          
Investment, Identifier [Axis]: Trident Maritime Systems, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   13,237 [8],[11],[12]   13,237 [8],[11],[12]   14,420 [3],[4],[5]          
Cost   15,498 [8],[11],[12]   15,498 [8],[11],[12]   15,202 [3],[4],[5]          
Investment, Identifier [Axis]: Trintech, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,815 [8],[12],[22]   6,815 [8],[12],[22]   6,787 [4],[5],[23]          
Cost   6,696 [8],[12],[22]   6,696 [8],[12],[22]   6,725 [4],[5],[23]          
Investment, Identifier [Axis]: Trintech, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   151 [8],[12],[13],[22]   151 [8],[12],[13],[22]   145 [4],[5],[14],[23]          
Cost   142 [8],[12],[13],[22]   142 [8],[12],[13],[22]   140 [4],[5],[14],[23]          
Investment, Identifier [Axis]: True Religion Apparel, Inc., Class A Units                      
Schedule of Investments [Line Items]                      
Fair Value [5],[16],[18]           0          
Cost [5],[16],[18]           0          
Investment, Identifier [Axis]: Turbo Buyer, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   7,782 [8],[11],[12]   7,782 [8],[11],[12]   7,754 [3],[4],[5]          
Cost   8,114 [8],[11],[12]   8,114 [8],[11],[12]   8,121 [3],[4],[5]          
Investment, Identifier [Axis]: Turnberry Solutions, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,836 [8],[12],[22]   4,836 [8],[12],[22]   4,874 [4],[5],[23]          
Cost   4,818 [8],[12],[22]   4,818 [8],[12],[22]   4,839 [4],[5],[23]          
Investment, Identifier [Axis]: UBC Ledgers Holding AB, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   770 [7],[8],[12],[19]   770 [7],[8],[12],[19]   536 [4],[5],[10],[20]          
Cost   709 [7],[8],[12],[19]   709 [7],[8],[12],[19]   556 [4],[5],[10],[20]          
Investment, Identifier [Axis]: UBC Ledgers Holding AB, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   1,704 [7],[8],[12],[13],[64]   1,704 [7],[8],[12],[13],[64]   1,450 [4],[5],[10],[14],[38]          
Cost   1,493 [7],[8],[12],[13],[64]   1,493 [7],[8],[12],[13],[64]   1,486 [4],[5],[10],[14],[38]          
Investment, Identifier [Axis]: UHY Advisors, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   7,793 [8],[11],[12],[13]   7,793 [8],[11],[12],[13]   12,982 [3],[4],[5],[14]          
Cost   7,674 [8],[11],[12],[13]   7,674 [8],[11],[12],[13]   12,991 [3],[4],[5],[14]          
Investment, Identifier [Axis]: UHY Advisors, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   273 [8],[11],[12],[13]   273 [8],[11],[12],[13]   (35) [3],[4],[5],[14]          
Cost   248 [8],[11],[12],[13]   248 [8],[11],[12],[13]   (34) [3],[4],[5],[14]          
Investment, Identifier [Axis]: UKFast Leaders Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   12,334 [7],[8],[12],[29]   12,334 [7],[8],[12],[29]   11,041 [4],[5],[10],[30]          
Cost   11,901 [7],[8],[12],[29]   11,901 [7],[8],[12],[29]   11,860 [4],[5],[10],[30]          
Investment, Identifier [Axis]: US Bank National Association Series 2025-1, Structured Note - Class R                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8],[11],[12]   5,843   5,843              
Cost [7],[8],[11],[12]   5,758   5,758              
Investment, Identifier [Axis]: US Bank National Association Series 2025-2, Structured Note - Class R                      
Schedule of Investments [Line Items]                      
Fair Value [7],[12],[22]   5,000   5,000              
Cost [7],[12],[22]   5,000   5,000              
Investment, Identifier [Axis]: USLS Acquisition, Inc. (f/k/a US Legal Support, Inc.), First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12]   17,921   17,921              
Cost [8],[11],[12]   17,893   17,893              
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 [3],[4],[5]           12,487          
Cost [3],[4],[5]           12,558          
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 [3],[4],[5]           5,411          
Cost [3],[4],[5]           5,414          
Investment, Identifier [Axis]: Union Bidco Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,048 [7],[8],[12],[13],[31]   1,048 [7],[8],[12],[13],[31]   930 [4],[5],[10],[14],[32]          
Cost   957 [7],[8],[12],[13],[31]   957 [7],[8],[12],[13],[31]   892 [4],[5],[10],[14],[32]          
Investment, Identifier [Axis]: United Therapy Holding III GmbH, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[10],[14],[20]           1,204          
Cost [4],[5],[10],[14],[20]           1,713          
Investment, Identifier [Axis]: Unither (Uniholding), First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,227 [7],[8],[12],[13],[19]   2,227 [7],[8],[12],[13],[19]   1,962 [4],[5],[10],[14],[20]          
Cost   1,973 [7],[8],[12],[13],[19]   1,973 [7],[8],[12],[13],[19]   1,965 [4],[5],[10],[14],[20]          
Investment, Identifier [Axis]: Unosquare, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8],[12],[13],[22]   2,363   2,363              
Cost [8],[12],[13],[22]   2,359   2,359              
Investment, Identifier [Axis]: Unosquare, LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value [8],[15]   261   261              
Cost [8],[15]   261   261              
Investment, Identifier [Axis]: Unosquare, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [8],[12],[13],[22]   (9)   (9)              
Cost [8],[12],[13],[22]   (9)   (9)              
Investment, Identifier [Axis]: Utac Ceram, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   1,812 [7],[8],[12],[19]   1,812 [7],[8],[12],[19]   1,500 [4],[5],[10],[20]          
Cost   1,803 [7],[8],[12],[19]   1,803 [7],[8],[12],[19]   1,754 [4],[5],[10],[20]          
Investment, Identifier [Axis]: Utac Ceram, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   3,616 [7],[8],[11],[12]   3,616 [7],[8],[11],[12]   2,471 [3],[4],[5],[10]          
Cost   3,644 [7],[8],[11],[12]   3,644 [7],[8],[11],[12]   2,572 [3],[4],[5],[10]          
Investment, Identifier [Axis]: Utac Ceram, First Lien Senior Secured Term Loan 3                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[5],[10]           943          
Cost [3],[4],[5],[10]           994          
Investment, Identifier [Axis]: VB Spine Intermediary II LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12]   43,695   43,695              
Cost [8],[11],[12]   43,677   43,677              
Investment, Identifier [Axis]: VB Spine Intermediary II LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value [8],[15]   0   0              
Cost [8],[15]   0   0              
Investment, Identifier [Axis]: VOYA CLO 2015-2, LTD., Subordinated Structured Notes                      
Schedule of Investments [Line Items]                      
Fair Value   45 [7],[15],[17]   45 [7],[15],[17]   15 [10],[16],[18]          
Cost   2,434 [7],[15],[17]   2,434 [7],[15],[17]   2,496 [10],[16],[18]          
Investment, Identifier [Axis]: VOYA CLO 2016-2, LTD., Subordinated Structured Notes                      
Schedule of Investments [Line Items]                      
Fair Value   1 [7],[15],[17]   1 [7],[15],[17]   1,072 [10],[16],[18]          
Cost   673 [7],[15],[17]   673 [7],[15],[17]   2,462 [10],[16],[18]          
Investment, Identifier [Axis]: Validity, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[23]           4,783          
Cost [4],[5],[23]           4,750          
Investment, Identifier [Axis]: Velocity Pooling Vehicle, LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   2 [8],[15],[17]   2 [8],[15],[17]   2 [5],[16],[18]          
Cost   60 [8],[15],[17]   60 [8],[15],[17]   60 [5],[16],[18]          
Investment, Identifier [Axis]: Velocity Pooling Vehicle, LLC, Warrants                      
Schedule of Investments [Line Items]                      
Fair Value   3 [8],[15],[17]   3 [8],[15],[17]   3 [5],[16],[18]          
Cost   72 [8],[15],[17]   72 [8],[15],[17]   72 [5],[16],[18]          
Investment, Identifier [Axis]: Victoria Bidco Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,016 [7],[8],[12],[31]   4,016 [7],[8],[12],[31]   3,787 [4],[5],[10],[32]          
Cost   4,094 [7],[8],[12],[31]   4,094 [7],[8],[12],[31]   4,081 [4],[5],[10],[32]          
Investment, Identifier [Axis]: Vision Solutions Inc., Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,194 [11],[12],[17]   6,194 [11],[12],[17]   6,256 [3],[4],[18]          
Cost   6,498 [11],[12],[17]   6,498 [11],[12],[17]   6,497 [3],[4],[18]          
Investment, Identifier [Axis]: Vista Global Holding Ltd, Structured Secured Note - Class C                      
Schedule of Investments [Line Items]                      
Fair Value   484 [7]   484 [7]   495 [5],[10]          
Cost   488 [7]   488 [7]   500 [5],[10]          
Investment, Identifier [Axis]: VistaJet Pass Through Trust 2021-1B, Structured Secured Note - Class B                      
Schedule of Investments [Line Items]                      
Fair Value [5]           3,160          
Cost [5]           3,214          
Investment, Identifier [Axis]: Vital Buyer, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   17,776 [8],[11],[12]   17,776 [8],[11],[12]   7,241 [3],[4],[5]          
Cost   17,766 [8],[11],[12]   17,766 [8],[11],[12]   7,249 [3],[4],[5]          
Investment, Identifier [Axis]: Vital Buyer, LLC, Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   433 [8]   433 [8]   388 [5]          
Cost   164 [8]   164 [8]   164 [5]          
Investment, Identifier [Axis]: W2O Holdings, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[5]           11,772          
Cost [3],[4],[5]           11,803          
Investment, Identifier [Axis]: WEST-NR ACQUISITIONCO, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12],[13]   10,795   10,795              
Cost [8],[11],[12],[13]   10,712   10,712              
Investment, Identifier [Axis]: WEST-NR ACQUISITIONCO, LLC, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[5],[14]           2,502          
Cost [3],[4],[5],[14]           2,500          
Investment, Identifier [Axis]: WEST-NR ACQUISITIONCO, LLC, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[5]           5,959          
Cost [3],[4],[5]           5,957          
Investment, Identifier [Axis]: WEST-NR ACQUISITIONCO, LLC, First Lien Senior Secured Term Loan 3                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[5],[14]           1,816          
Cost [3],[4],[5],[14]           1,809          
Investment, Identifier [Axis]: WWEC Holdings III Corp, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   12,055 [8],[11],[12]   12,055 [8],[11],[12]   12,050 [3],[4],[5]          
Cost   11,971 [8],[11],[12]   11,971 [8],[11],[12]   11,997 [3],[4],[5]          
Investment, Identifier [Axis]: WWEC Holdings III Corp, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (15) [8],[11],[12],[13]   (15) [8],[11],[12],[13]   (35) [3],[4],[5],[14]          
Cost   (32) [8],[11],[12],[13]   (32) [8],[11],[12],[13]   (35) [3],[4],[5],[14]          
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],[48],[54]           10,730          
Cost [10],[48],[54]           22,913          
Investment, Identifier [Axis]: Waccamaw River LLC, Member Interest                      
Schedule of Investments [Line Items]                      
Fair Value   5,543 [7],[39],[55]   5,543 [7],[39],[55]   10,730 $ 15,470        
Cost [7],[39],[55]   17,988   17,988              
Investment, Identifier [Axis]: Whitcraft Holdings, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [8],[11],[12],[13]   12,868   12,868              
Cost [8],[11],[12],[13]   12,777   12,777              
Investment, Identifier [Axis]: Whitcraft Holdings, Inc., First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[5]           1,802          
Cost [3],[4],[5]           1,825          
Investment, Identifier [Axis]: Whitcraft Holdings, Inc., First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[5],[14]           (36)          
Cost [3],[4],[5],[14]           (39)          
Investment, Identifier [Axis]: Whitcraft Holdings, Inc., First Lien Senior Secured Term Loan 3                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[23]           8,525          
Cost [4],[5],[23]           8,265          
Investment, Identifier [Axis]: Whitcraft Holdings, Inc., LP Units                      
Schedule of Investments [Line Items]                      
Fair Value   1,105 [8],[15]   1,105 [8],[15]   975 [5],[16]          
Cost   631 [8],[15]   631 [8],[15]   631 [5],[16]          
Investment, Identifier [Axis]: Whitcraft Holdings, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   975 [8],[11],[12],[13]   975 [8],[11],[12],[13]   993 [4],[5],[14],[23]          
Cost   950 [8],[11],[12],[13]   950 [8],[11],[12],[13]   941 [4],[5],[14],[23]          
Investment, Identifier [Axis]: White Bidco Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[5],[10],[14]           1,747          
Cost [3],[4],[5],[10],[14]           1,695          
Investment, Identifier [Axis]: White Bidco Limited, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8],[11],[12]   1,723   1,723              
Cost [7],[8],[11],[12]   1,711   1,711              
Investment, Identifier [Axis]: White Bidco Limited, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8],[11],[12]   518   518              
Cost [7],[8],[11],[12]   519   519              
Investment, Identifier [Axis]: Woodland Foods, LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   1,417 [8],[15]   1,417 [8],[15]   1,271 [5],[16]          
Cost   1,663 [8],[15]   1,663 [8],[15]   1,663 [5],[16]          
Investment, Identifier [Axis]: Woodland Foods, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   17,078 [8],[11],[12]   17,078 [8],[11],[12]   6,097 [3],[4],[5]          
Cost   17,049 [8],[11],[12]   17,049 [8],[11],[12]   6,092 [3],[4],[5]          
Investment, Identifier [Axis]: Woodland Foods, LLC, Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value [5]           427          
Cost [5]           427          
Investment, Identifier [Axis]: Woodland Foods, LLC, Preferred Stock 1                      
Schedule of Investments [Line Items]                      
Fair Value [8]   494   494              
Cost [8]   494   494              
Investment, Identifier [Axis]: Woodland Foods, LLC, Preferred Stock 2                      
Schedule of Investments [Line Items]                      
Fair Value [8]   136   136              
Cost [8]   136   136              
Investment, Identifier [Axis]: Woodland Foods, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (28) [8],[11],[12],[13]   (28) [8],[11],[12],[13]   1,043 [3],[4],[5],[14]          
Cost   (25) [8],[11],[12],[13]   (25) [8],[11],[12],[13]   1,041 [3],[4],[5],[14]          
Investment, Identifier [Axis]: World 50, Inc., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   13,792 [8],[12],[33]   13,792 [8],[12],[33]   13,785 [4],[5],[23]          
Cost   13,571 [8],[12],[33]   13,571 [8],[12],[33]   13,645 [4],[5],[23]          
Investment, Identifier [Axis]: World 50, Inc., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [8],[12],[13],[33]   0 [8],[12],[13],[33]   (8) [4],[5],[14],[23]          
Cost   (15) [8],[12],[13],[33]   (15) [8],[12],[13],[33]   (17) [4],[5],[14],[23]          
Investment, Identifier [Axis]: Xeinadin Bidco Limited, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   1,230 [7],[8],[15]   1,230 [7],[8],[15]   572 [5],[10],[16]          
Cost   565 [7],[8],[15]   565 [7],[8],[15]   565 [5],[10],[16]          
Investment, Identifier [Axis]: Xeinadin Bidco Limited, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   328 [7],[8],[12],[28]   328 [7],[8],[12],[28]   283 [4],[5],[10],[26]          
Cost   305 [7],[8],[12],[28]   305 [7],[8],[12],[28]   305 [4],[5],[10],[26]          
Investment, Identifier [Axis]: Xeinadin Bidco Limited, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   9,455 [7],[8],[12],[13],[31]   9,455 [7],[8],[12],[13],[31]   8,598 [4],[5],[10],[32]          
Cost   8,684 [7],[8],[12],[13],[31]   8,684 [7],[8],[12],[13],[31]   8,657 [4],[5],[10],[32]          
Investment, Identifier [Axis]: Xeinadin Bidco Limited, Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,395 [7],[8]   4,395 [7],[8]   3,691 [5],[10]          
Cost   4,135 [7],[8]   4,135 [7],[8]   3,691 [5],[10]          
Investment, Identifier [Axis]: ZB Holdco LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   11,511 [8],[11],[12],[13]   11,511 [8],[11],[12],[13]   9,053 [3],[4],[5]          
Cost   11,510 [8],[11],[12],[13]   11,510 [8],[11],[12],[13]   9,057 [3],[4],[5]          
Investment, Identifier [Axis]: ZB Holdco LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   298 [8],[15]   298 [8],[15]   197 [5],[16]          
Cost   121 [8],[15]   121 [8],[15]   153 [5],[16]          
Investment, Identifier [Axis]: ZB Holdco LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   907 [8],[11],[12],[13]   907 [8],[11],[12],[13]   495 [3],[4],[5],[14]          
Cost   910 [8],[11],[12],[13]   910 [8],[11],[12],[13]   498 [3],[4],[5],[14]          
Investment, Identifier [Axis]: Zelda Luxco S.A.S, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8],[12],[13],[28]   1,700   1,700              
Cost [7],[8],[12],[13],[28]   1,672   1,672              
Investment, Identifier [Axis]: Zeppelin Bidco Limited, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[5],[10],[32]           4,691          
Cost [4],[5],[10],[32]           6,256          
Investment, Identifier [Axis]: Zeppelin Bidco Limited, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   2,294 [7],[8],[12],[31],[39]   2,294 [7],[8],[12],[31],[39]   0          
Cost [7],[8],[12],[31],[39]   1,787   1,787              
Investment, Identifier [Axis]: Zeppelin Bidco Limited, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   273 [7],[8],[12],[31],[39]   273 [7],[8],[12],[31],[39]   0          
Cost [7],[8],[12],[31],[39]   207   207              
Investment, Identifier [Axis]: Zeppelin Bidco Limited, Ordinary Shares                      
Schedule of Investments [Line Items]                      
Fair Value [7],[8],[15],[39]   0   0              
Cost [7],[8],[15],[39]   0   0              
Investment, Identifier [Axis]: Zeppelin Bidco Limited, Ordinary shares                      
Schedule of Investments [Line Items]                      
Fair Value   0   0   0          
Investment, Identifier [Axis]: eShipping, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,971 [8],[12],[22]   2,971 [8],[12],[22]   3,465 [4],[5],[23]          
Cost   2,949 [8],[12],[22]   2,949 [8],[12],[22]   3,431 [4],[5],[23]          
Investment, Identifier [Axis]: eShipping, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   99 [8],[12],[13],[22]   99 [8],[12],[13],[22]   0 [4],[5],[14],[23]          
Cost   88 [8],[12],[13],[22]   88 [8],[12],[13],[22]   (14) [4],[5],[14],[23]          
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   2,000 800 6,000 1,800            
Total dividend income   1,800 $ 700 5,400 $ 1,600            
Fair Value   13,768   13,768   33,422          
Cost   $ 15,165   $ 15,165   $ 36,083          
Weighted average yield   9.40%   9.40%   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] All of the investment is or will be encumbered as security for the Company’s $0.7 billion senior secured credit facility with ING Capital LLC (“ING”) initially entered into in February 2019 (as amended, restated and otherwise modified from time to time, the “February 2019 Credit Facility”).
[2] All of the investment is or will be encumbered as security for the Company’s $0.8 billion February 2019 Credit Facility with ING.
[3] The interest rate on these loans is subject to 3 Month SOFR, which as of December 31, 2024 was 4.30510%.
[4] Debt investment includes interest rate floor feature.
[5] The fair value of the investment was determined using significant unobservable inputs.
[6] PIK non-accrual investment.
[7] Investment is not a qualifying investment as defined under Section 55(a) of the 1940 Act. Non-qualifying assets represent 24.1% of total investments at fair value as of September 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).
[8] The fair value of the investment was determined using significant unobservable inputs.
[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] The interest rate on these loans is subject to 3 Month SOFR, which as of September 30, 2025 was 3.97639%.
[12] Debt investment includes interest rate floor feature.
[13] Position or portion thereof is an unfunded loan or equity commitment.
[14] Position or portion thereof is an unfunded loan or equity commitment.
[15] Investment is non-income producing.
[16] Investment is non-income producing.
[17] 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.
[18] 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.
[19] The interest rate on these loans is subject to 3 Month EURIBOR, which as of September 30, 2025 was 2.03200%.
[20] The interest rate on these loans is subject to 3 Month EURIBOR, which as of December 31, 2024 was 2.71400%.
[21] The interest rate on these loans is subject to 6 Month BBSY, which as of December 31, 2024 was 4.49250%.
[22] The interest rate on these loans is subject to 1 Month SOFR, which as of September 30, 2025 was 4.12920%.
[23] The interest rate on these loans is subject to 1 Month SOFR, which as of December 31, 2024 was 4.33249%.
[24] The interest rate on these loans is subject to 6 Month SOFR, which as of December 31, 2024 was 4.25001%.
[25] Non-accrual investment.
[26] The interest rate on these loans is subject to 6 Month EURIBOR, which as of December 31, 2024 was 2.56800%.
[27] The interest rate on these loans is subject to 1 Month SONIA, which as of September 30, 2025 was 3.97500%.
[28] The interest rate on these loans is subject to 6 Month EURIBOR, which as of September 30, 2025 was 2.09600%.
[29] The interest rate on these loans is subject to 3 Month SONIA, which as of September 30, 2025 was 3.97260%.
[30] The interest rate on these loans is subject to 3 Month SONIA, which as of December 31, 2024 was 4.62330%.
[31] The interest rate on these loans is subject to 6 Month SONIA, which as of September 30, 2025 was 3.93900%.
[32] The interest rate on these loans is subject to 6 Month SONIA, which as of December 31, 2024 was 4.56370%.
[33] The interest rate on these loans is subject to 6 Month SOFR, which as of September 30, 2025 was 3.84590%.
[34] The interest rate on these loans is subject to 3 Month BBSY, which as of September 30, 2025 was 3.57640%.
[35] The interest rate on these loans is subject to 3 Month BBSY, which as of December 31, 2024 was 4.41630%.
[36] The interest rate on these loans is subject to 1 Month EURIBOR, which as of September 30, 2025 was 1.92900%.
[37] The interest rate on these loans is subject to 1 Month EURIBOR, which as of December 31, 2024 was 2.84500%.
[38] The interest rate on these loans is subject to 3 Month STIBOR, which as of December 31, 2024 was 2.54200%.
[39] As defined in the 1940 Act, the Company is deemed to be an “affiliated person” of the portfolio company as the Company owns between 5% or more, up to 25% (inclusive), of the portfolio company’s voting securities (“non-controlled affiliate”). Transactions related to investments in non-controlled “Affiliate Investments” for the nine months ended September 30, 2025 were as follows:
December 31, 2024
Value
Gross Additions
(a)
Gross Reductions (b)Amount of Realized Gain (Loss)Amount of Unrealized Gain (Loss)September 30,
2025
 Value
Amount of Interest or Dividends Credited to Income(c)
Portfolio CompanyType of Investment
Biolam(d)
First Lien Senior Secured Term Loan (EURIBOR + 4.50%, 12.5% PIK)(e)
$— $1,258 $(53)$$492 $1,699 $(27)
Common Stock
(851,507 shares)
— — — — — — — 
Convertible Bonds
(1,586,655 shares)
— — — — — — — 
Ordinary Shares
(15,191,001 shares)
— — — — — — — 
Preferred Stock A
(41,692 shares)
— — — — — — — 
Preferred Stock A2
(13,538 shares)
— — — — — — — 
Preferred Stock B
(1,529,216 shares)
— — — — — — — 
Preferred Stock C
(11,153 shares)
— — — — — — — 
Preferred Stock O1
(1,336,662 shares)
— — — — — — — 
Preferred Stock O2
(134,616 shares)
— — — — — — — 
Warrants (2,600,000 units)
— — — — — — — 
— 1,258 (53)492 1,699 (27)
Celebration Bidco, LLC(d)
First Lien Senior Secured Term Loan (SOFR + 8.00%, 12.3% PIK)
6,414 619 — — (281)6,752 618 
First Lien Senior Secured Term Loan (SOFR + 8.00%, 12.3% PIK)
— 1,387 — — — 1,387 111 
Common Stock
(1,243,071 shares)
11,262 — — — (3,517)7,745 — 
17,676 2,006 — — (3,798)15,884 728 
Coastal Marina Holdings, LLC(d)
Subordinated Term Loan
(8.0% Cash)
15,770 76 — — 15 15,861 1,070 
Subordinated Term Loan
(8.0% Cash)
7,271 28 — — 14 7,313 486 
LLC Units (3,518,097 units)
16,852 — — — 3,131 19,983 — 
39,893 104 — — 3,160 43,157 1,556 
December 31, 2024
Value
Gross Additions
(a)
Gross Reductions (b)Amount of Realized Gain (Loss)Amount of Unrealized Gain (Loss)September 30,
2025
 Value
Amount of Interest or Dividends Credited to Income(c)
Portfolio CompanyType of Investment
Eclipse Business Capital, LLC(d)
Revolver (SOFR + 6.50%, 10.8% Cash)
$10,091 $3,009 $(6,092)$— $(8)$7,000 $849 
Second Lien Senior Secured Term Loan (7.5% Cash)
4,545 — — (5)4,545 264 
LLC units (89,447,396 units)
136,855 22 — — 2,661 139,538 12,321 
151,491 3,036 (6,092)— 2,648 151,083 13,434 
Jocassee Partners LLC
9.1% Member Interest
40,761 — — — (1,923)38,838 4,282 
40,761 — — — (1,923)38,838 4,282 
Rocade Holdings LLC(d)
Preferred LP Units (71,000 units) (SOFR + 6.00%, 10.3% PIK)
83,000 6,576 — — (17)89,559 6,576 
Common LP Units (23.8 units)
243 — — — 955 1,198 308 
83,243 6,576 — — 938 90,757 6,884 
Sierra Senior Loan Strategy JV I LLC
89.01% Member Interest
41,453 — — — (3,115)38,338 5,353 
41,453 — — — (3,115)38,338 5,353 
Skyvault Holdings LLC(d)
First Lien Senior Secured Term Loan (12.0% Cash)
3,586 12,236 (181)— — 15,641 927 
LLC Units (4,046,326.8 units)
1,195 4,027 — — (8)5,214 — 
4,781 16,263 (181)— (8)20,855 927 
Thompson Rivers LLC
16.0% Member Interest
7,208 — (2,396)— (44)4,768 — 
7,208 — (2,396)— (44)4,768 — 
Waccamaw River LLC
20% Member Interest
10,730 — (4,925)— (262)5,543 745 
10,730 — (4,925)— (262)5,543 745 
Zeppelin Bidco Limited(d)
First Lien Senior Secured Term Loan (SOFR + 6.50%, 11.3% PIK)
— 2,503 (11)(4,329)4,131 2,294 (6)
First Lien Senior Secured Term Loan (SOFR + 6.50%, 11.3% PIK)
— 305 (506)474 273 — 
Ordinary Shares (879 shares)
— — — — — — — 
— 2,808 (11)(4,835)4,605 2,567 (6)
Total Affiliate Investments$397,236 $32,051 $(13,658)$(4,833)$2,693 $413,489 $33,876 
(a)     Gross additions include increases in the cost basis of investments resulting from new investments, follow-on investments, payment-in-kind interest or dividends, the amortization of any unearned income or discounts on debt investments, as applicable.
(b)    Gross reductions include decreases in the total cost basis of investments resulting from principal repayments, sales and return of capital.
(c) Represents the total amount of interest, fees or dividends credited to income for the portion of the year an investment was included in the Affiliate category.
(d) The fair value of the investment was determined using significant unobservable inputs.
(e) Non-accrual investment
[40] Non-accrual investment.
[41] Non-accrual investment.
[42] As defined in the 1940 Act, the Company is deemed to be both an “affiliated person” and “control” the portfolio company because it owns more than 25% of the portfolio company’s outstanding voting securities or it has the power to exercise control over the management or policies of such portfolio company (including through a management agreement). Transactions as of and during the year ended December 31, 2024 in which the portfolio company is deemed to be a “Control Investment” of the Company were as follows:
December 31, 2023
Value
Gross Additions
(a)
Gross Reductions (b)Amount of Realized Gain (Loss)Amount of Unrealized Gain (Loss)December 31, 2024
 Value
Amount of Interest or Dividends Credited to Income(c)
Portfolio CompanyType of Investment
Black Angus Steakhouses, LLC(d)
First Lien Senior Secured Term Loan (14.4% PIK)(e)
$7,166 $1,114 $— $— $(5,536)$2,744 $1,028 
First Lien Senior Secured Term Loan (10.0% PIK)(e)
4,869 — — — (4,869)— — 
LLC Units (44.6 units)
— — — — — — — 
12,035 1,114 — — (10,405)2,744 1,028 
MVC Automotive Group GmbH(d)
Bridge Loan (4.5% Cash, 1.5% PIK)
9,762 720 (9,620)(862)— — 495 
Common Equity Interest (18,000 Shares)
15,430 9,620 — — (11,309)13,741 — 
25,192 10,340 (9,620)(862)(11,309)13,741 495 
MVC Private Equity Fund LP
General Partnership Interest
(1,831.4 units)
24 — (17)— (7)— 48 
Limited Partnership Interest
(71,790.4 units)
981 — (678)— (292)11 — 
1,005 — (695)— (299)11 48 
Security Holdings B.V(d)
Bridge Loan (5.0% PIK)
6,328 327 — — — 6,655 326 
Revolver (6.0% Cash)
3,866 1,828 (12)17 (366)5,333 188 
Senior Subordinated Term Loan (3.1% PIK)
10,867 324 — — — 11,191 273 
Senior Unsecured Term Loan (6.0% Cash, 9.0% PIK)
2,236 208 — — (151)2,293 255 
Common Stock Series A (17,100 shares)
311 — — — 88 399 — 
Common Stock Series B (1,236 shares)
29,080 — — — 8,216 37,296 — 
52,688 2,687 (12)17 7,787 63,167 1,042 
Total Control Investments$90,920 $14,141 $(10,327)$(845)$(14,226)$79,663 $2,613 
(a) Gross additions include increases in the cost basis of investments resulting from new investments, follow-on investments, payment-in-kind interest or dividends, the amortization of any unearned income or discounts on debt investments, as applicable.
(b)     Gross reductions include decreases in the total cost basis of investments resulting from principal repayments, sales and return of capital.
(c)    Represents the total amount of interest, fees or dividends credited to income for the portion of the year an investment was included in the Control category.
(d) The fair value of the investment was determined using significant unobservable inputs.
(e) Non-accrual investment.
[43] The fair value of the investment was determined using significant unobservable inputs.
[44] Non-accrual investment.
[45] The interest rate on these loans is subject to 1 Month SONIA, which as of December 31, 2024 was 4.71030%.
[46] The interest rate on these loans is subject to 3 Month CORRA, which as of September 30, 2025 was 2.56000%.
[47] The interest rate on these loans is subject to 3 Month CORRA, which as of December 31, 2024 was 3.15158%.
[48] As defined in the 1940 Act, the Company is deemed to be an “affiliated person” of the portfolio company as the Company owns between 5% or more, up to 25% (inclusive), of the portfolio company’s voting securities (“non-controlled affiliate”). Transactions related to investments in non-controlled “Affiliate Investments” for the year ended December 31, 2024 were as follows:
December 31, 2023
Value
Gross Additions
(a)
Gross Reductions (b)Amount of Realized Gain (Loss)Amount of Unrealized Gain (Loss)December 31, 2024
 Value
Amount of Interest or Dividends Credited to Income(c)
Portfolio CompanyType of Investment
Celebration Bidco, LLC(d)
First Lien Senior Secured Term Loan (SOFR + 8.00%, 12.6% PIK)
$6,214 $200 $— $— $— $6,414 $837 
Common Stock (1,243,071 shares)
12,177 — — — (915)11,262 — 
18,391 200 — — (915)17,676 837 
Coastal Marina Holdings, LLC(d)
Subordinated Term Loan
(8.0% Cash)
15,649 95 — — 26 15,770 1,428 
Subordinated Term Loan
(8.0% Cash)
6,868 403 — — — 7,271 711 
LLC Units (3,518,097 units)
12,160 5,551 — — (859)16,852 — 
34,677 6,049 — — (833)39,893 2,139 
Eclipse Business Capital, LLC(d)
Revolver (SOFR + 7.25%, 11.9% Cash)
5,545 27,656 (23,091)— (19)10,091 817 
Second Lien Senior Secured Term Loan (7.5% Cash)
4,545 — — (6)4,545 323 
LLC units (89,447,396 units)
145,799 66 — — (9,010)136,855 14,894 
155,889 27,728 (23,091)— (9,035)151,491 16,034 
Hylan Datacom & Electrical LLC(d)
First Lien Senior Secured Term Loan (SOFR + 8.00%, 13.4% Cash)
3,917 172 (3,917)— (172)— 311 
Second Lien Senior Secured Term Loan (SOFR + 3.00%, 8.5% Cash)
4,519 161 (4,680)— — — 181 
Common Stock
(102,144 shares)
2,013 — (1,040)(4,179)3,206 — — 
10,449 333 (9,637)(4,179)3,034 — 492 
Jocassee Partners LLC
9.1% Member Interest
41,053 — — — (292)40,761 5,709 
41,053 — — — (292)40,761 5,709 
Rocade Holdings LLC(d)
Preferred LP Units (71,000 units) (SOFR + 6.00% PIK, 10.3% PIK)
73,113 12,098 (2,222)— 11 83,000 8,598 
Common LP Units (23.8 units)
844 — — — (601)243 — 
73,957 12,098 (2,222)— (590)83,243 8,598 
Sierra Senior Loan Strategy JV I LLC
89.01% Member Interest
39,172 — — — 2,281 41,453 2,225 
39,172 — — — 2,281 41,453 2,225 
Skyvault Holdings LLC(d)
First Lien Senior Secured Term Loan (12.0% PIK)
— 3,586 — — — 3,586 36 
LLC Units (1,195,449.6 units)
— 1,195 — — — 1,195 — 
— 4,781 — — — 4,781 36 
Thompson Rivers LLC
16% Member Interest
13,365 — (5,991)— (166)7,208 — 
13,365 — (5,991)— (166)7,208 — 
December 31, 2023
Value
Gross Additions
(a)
Gross Reductions (b)Amount of Realized Gain (Loss)Amount of Unrealized Gain (Loss)December 31, 2024
 Value
Amount of Interest or Dividends Credited to Income(c)
Portfolio CompanyType of Investment
Waccamaw River LLC
20% Member Interest
$15,470 $— $(2,087)$— $(2,653)$10,730 $3,535 
15,470 — (2,087)— (2,653)10,730 3,535 
Total Affiliate Investments$402,423 $51,189 $(43,028)$(4,179)$(9,169)$397,236 $39,605 
(a)     Gross additions include increases in the cost basis of investments resulting from new investments, follow-on investments, payment-in-kind interest or dividends, the amortization of any unearned income or discounts on debt investments, as applicable.
(b)    Gross reductions include decreases in the total cost basis of investments resulting from principal repayments, sales and return of capital.
(c) Represents the total amount of interest, fees or dividends credited to income for the portion of the year an investment was included in the Affiliate category.
(d) The fair value of the investment was determined using significant unobservable inputs.
[49] The fair value of the investment was determined using significant unobservable inputs.
[50] The interest rate on these loans is subject to 3 Month BKBM, which as of September 30, 2025 was 2.93000%.
[51] The interest rate on these loans is subject to 3 Month BKBM, which as of December 31, 2024 was 4.27000%.
[52] The interest rate on these loans is subject to 3 Month SARON, which as of September 30, 2025 was -0.04090%
[53] The interest rate on these loans is subject to 6 Month SARON, which as of December 31, 2024 was 1.01720%.
[54] Portfolio company does not issue shares or units; member interest is based on commitments.
[55] Portfolio company does not issue shares or units; member interest is based on commitments.
[56] 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.
[57] Investment was purchased from MVC Capital, Inc. (“MVC”) in connection with the MVC Acquisition (as defined in “Note 2 - Agreements and Related Party Transactions”).
[58] As defined in the 1940 Act, the Company is deemed to be both an “affiliated person” and “control” the portfolio company because it owns more than 25% of the portfolio company’s outstanding voting securities or it has the power to exercise control over the management or policies of such portfolio company (including through a management agreement). Transactions for the nine months ended September 30, 2025 in which the portfolio company is deemed to be a “Control Investment” of the Company were as follows:
December 31, 2024
Value
Gross Additions
(a)
Gross Reductions (b)Amount of Realized Gain (Loss)Amount of Unrealized Gain (Loss)September 30,
2025
 Value
Amount of Interest or Dividends Credited to Income(c)
Portfolio CompanyType of Investment
Black Angus Steakhouses, LLC(d)
First Lien Senior Secured Term Loan (14.4% PIK)(e)
$2,744 $— $(610)$(7,481)$5,347 $— $(6)
First Lien Senior Secured Term Loan (10.0% PIK)(e)
— — — (9,628)9,628 — — 
LLC Units (44.6 units)
— — — — — — — 
2,744 — (610)(17,109)14,975 — (6)
MVC Automotive Group GmbH(d)
First Lien Senior Secured Term Loan (7.0% Cash)
— 2,310 (1,178)34 1,172 56 
Common Equity Interest (18,000 Shares)
13,741 — — — (4,028)9,713 — 
13,741 2,310 (1,178)(3,994)10,885 56 
MVC Private Equity Fund LP
General Partnership Interest
(1,831.4 units)
— — — (183)183 — — 
Limited Partnership Interest
(71,790.4 units)
11 — (116)(7,166)7,271 — — 
11 — (116)(7,349)7,454 — — 
Security Holdings B.V(d)
Bridge Loan (5.0% PIK)
6,655 168 — — — 6,823 254 
Revolver (6.0% PIK)
5,333 165 (3)730 6,227 283 
Senior Subordinated Term Loan (3.1% PIK)
11,191 352 — — — 11,543 268 
Senior Unsecured Term Loan (9.0% PIK)
2,293 234 — — 318 2,845 304 
Common Stock Series A (17,100 shares)
399 — — — 61 460 — 
Common Stock Series B (1,236 shares)
37,296 — — — 5,650 42,946 2,817 
63,167 919 (3)6,759 70,844 3,926 
Total Control Investments$79,663 $3,229 $(1,907)$(24,450)$25,194 $81,729 $3,976 
(a) Gross additions include increases in the cost basis of investments resulting from new investments, follow-on investments, payment-in-kind interest or dividends, the amortization of any unearned income or discounts on debt investments, as applicable.
(b)     Gross reductions include decreases in the total cost basis of investments resulting from principal repayments, sales and return of capital.
(c)    Represents the total amount of interest, fees or dividends credited to income for the portion of the year an investment was included in the Control category.
(d) The fair value of the investment was determined using significant unobservable inputs.
(e) Non-accrual investment.
[59] The interest rate on these loans is subject to 1 Month NIBOR, which as of September 30, 2025 was 4.04000%.
[60] The interest rate on these loans is subject to 1 Month NIBOR, which as of December 31, 2024 was 4.61000%.
[61] The interest rate on these loans is subject to 1 Month BBSY, which as of September 30, 2025 was 3.53630%.
[62] The interest rate on these loans is subject to 1 Month BBSY, which as of December 31, 2024 was 4.32250%.
[63] The interest rate on these loans is subject to 6 Month SARON, which as of September 30, 2025 was -0.04508%.
[64] The interest rate on these loans is subject to 3 Month STIBOR, which as of September 30, 2025 was 1.88600%.