XML 247 R42.htm IDEA: XBRL DOCUMENT v3.24.2.u1
INVESTMENTS - Sierra Senior Loan Strategy JV I LLC (Details)
$ in Thousands
 3 Months Ended 6 Months Ended
Feb. 25, 2022
member
Jun. 30, 2024
USD ($)
Jun. 30, 2023
USD ($)
Jun. 30, 2024
USD ($)
Jun. 30, 2023
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
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   $ 11,734 $ 10,250 $ 20,210 $ 18,124            
Fair Value   2,395,660   2,395,660   $ 2,488,715          
Cost   2,445,862   2,445,862   2,535,576          
Borrowings under credit facility   350,823   350,823   719,914          
Investment, Identifier [Axis]: 1888 Industrial Services, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [1]           0 $ 0        
Investment, Identifier [Axis]: 1888 Industrial Services, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [1]           0 1,263        
Investment, Identifier [Axis]: 1888 Industrial Services, LLC, Warrants                      
Schedule of Investments [Line Items]                      
Fair Value [1]           0 0        
Investment, Identifier [Axis]: 1WorldSync, Inc., IT Consulting & Other Services, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[4]   7,086   7,086              
Cost [2],[3],[4]   7,051   7,051              
Investment, Identifier [Axis]: 1WorldSync, Inc., IT Consulting & Other Services, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [5],[6],[7]           7,124          
Cost [5],[6],[7]           7,073          
Investment, Identifier [Axis]: A.T. Holdings II LTD, Other Financial, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   9,763 [4],[8]   9,763 [4],[8]   11,688 [7],[9]          
Cost   12,500 [4],[8]   12,500 [4],[8]   12,500 [7],[9]          
Investment, Identifier [Axis]: AD Bidco, Inc., Technology, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[10],[11]   9,921   9,921              
Cost [3],[4],[10],[11]   9,905   9,905              
Investment, Identifier [Axis]: AD Bidco, Inc., Technology, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[11]   (79)   (79)              
Cost [3],[4],[11]   (84)   (84)              
Investment, Identifier [Axis]: AD Bidco, Inc., Technology, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[10],[11]   (29)   (29)              
Cost [3],[4],[10],[11]   (31)   (31)              
Investment, Identifier [Axis]: ADB Safegate, Aerospace & Defense, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,070 [3],[4],[8],[11]   6,070 [3],[4],[8],[11]   5,392 [6],[7],[9],[12]          
Cost   6,662 [3],[4],[8],[11]   6,662 [3],[4],[8],[11]   6,129 [6],[7],[9],[12]          
Investment, Identifier [Axis]: AIT Worldwide Logistics Holdings, Inc., Transportation Services, Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   551 [4],[13]   551 [4],[13]   537 [7],[14]          
Cost   349 [4],[13]   349 [4],[13]   349 [7],[14]          
Investment, Identifier [Axis]: AIT Worldwide Logistics Holdings, Inc., Transportation Services, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,460 [3],[4],[15]   6,460 [3],[4],[15]   6,402 [6],[7],[16]          
Cost   6,363 [3],[4],[15]   6,363 [3],[4],[15]   6,355 [6],[7],[16]          
Investment, Identifier [Axis]: AMMC CLO 22, Limited Series 2018-22A, Multi-Sector Holdings, Subordinated Structured Notes                      
Schedule of Investments [Line Items]                      
Fair Value [8],[17]   2,640   2,640              
Cost [8],[17]   3,584   3,584              
Investment, Identifier [Axis]: AMMC CLO 23, Ltd. Series 2020-23A, Multi-Sector Holdings, Subordinated Structured Notes 1                      
Schedule of Investments [Line Items]                      
Fair Value [9],[14],[18]           2,468          
Cost [9],[14],[18]           3,968          
Investment, Identifier [Axis]: AMMC CLO 23, Ltd. Series 2020-23A, Multi-Sector Holdings, Subordinated Structured Notes 2                      
Schedule of Investments [Line Items]                      
Fair Value   1,421 [8],[17]   1,421 [8],[17]   1,476 [9],[18]          
Cost   1,539 [8],[17]   1,539 [8],[17]   1,676 [9],[18]          
Investment, Identifier [Axis]: APC1 Holding, Diversified Manufacturing, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,441 [3],[4],[8],[19]   2,441 [3],[4],[8],[19]   2,505 [6],[7],[9],[20]          
Cost   2,319 [3],[4],[8],[19]   2,319 [3],[4],[8],[19]   2,314 [6],[7],[9],[20]          
Investment, Identifier [Axis]: APOG Bidco Pty Ltd, Healthcare, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,062 [3],[4],[8],[21]   2,062 [3],[4],[8],[21]   2,086 [6],[7],[9],[22]          
Cost   2,287 [3],[4],[8],[21]   2,287 [3],[4],[8],[21]   2,284 [6],[7],[9],[22]          
Investment, Identifier [Axis]: AQA Acquisition Holding, Inc., High Tech Industries, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   20,000 [3],[4],[11]   20,000 [3],[4],[11]   19,938 [6],[7],[12]          
Cost   19,653 [3],[4],[11]   19,653 [3],[4],[11]   19,622 [6],[7],[12]          
Investment, Identifier [Axis]: ASC Communications, LLC, Media & Entertainment, Class A Units                      
Schedule of Investments [Line Items]                      
Fair Value   785 [4]   785 [4]   703 [7]          
Cost   539 [4]   539 [4]   539 [7]          
Investment, Identifier [Axis]: ASC Communications, LLC, Media & Entertainment, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   8,088 [3],[4],[15]   8,088 [3],[4],[15]   9,035 [6],[7],[16]          
Cost   8,002 [3],[4],[15]   8,002 [3],[4],[15]   9,001 [6],[7],[16]          
Investment, Identifier [Axis]: ASC Communications, LLC, Media & Entertainment, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[4],[10],[15]   0 [3],[4],[10],[15]   (9) [6],[7],[16],[23]          
Cost   (11) [3],[4],[10],[15]   (11) [3],[4],[10],[15]   (12) [6],[7],[16],[23]          
Investment, Identifier [Axis]: ATL II MRO Holdings Inc, Transportation, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   8,209 [3],[4],[11]   8,209 [3],[4],[11]   8,250 [6],[7],[12]          
Cost   8,123 [3],[4],[11]   8,123 [3],[4],[11]   8,071 [6],[7],[12]          
Investment, Identifier [Axis]: ATL II MRO Holdings Inc, Transportation, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (17) [3],[4],[10],[11]   (17) [3],[4],[10],[11]   0 [6],[7],[12],[23]          
Cost   (32) [3],[4],[10],[11]   (32) [3],[4],[10],[11]   (35) [6],[7],[12],[23]          
Investment, Identifier [Axis]: AVSC Holding Corp., Advertising, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,944   6,944              
Cost   6,669   6,669              
Investment, Identifier [Axis]: AVSC Holding Corp., Advertising, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [3],[11]   10   10              
Cost [3],[11]   8   8              
Investment, Identifier [Axis]: AVSC Holding Corp., Advertising, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [3],[11]   1   1              
Cost [3],[11]   1   1              
Investment, Identifier [Axis]: AVSC Holding Corp., Advertising, First Lien Senior Secured Term Loan 3                      
Schedule of Investments [Line Items]                      
Fair Value           6,332          
Cost           6,172          
Investment, Identifier [Axis]: Accelerant Holdings, Banking, Finance, Insurance & Real Estate, Class A Convertible Preferred Equity                      
Schedule of Investments [Line Items]                      
Fair Value   6,098 [4],[13]   6,098 [4],[13]   5,858 [7],[14]          
Cost   5,000 [4],[13]   5,000 [4],[13]   5,000 [7],[14]          
Investment, Identifier [Axis]: Accelerant Holdings, Banking, Finance, Insurance & Real Estate, Class B Convertible Preferred Equity                      
Schedule of Investments [Line Items]                      
Fair Value   2,111 [4],[13]   2,111 [4],[13]   1,950 [7],[14]          
Cost   1,667 [4],[13]   1,667 [4],[13]   1,667 [7],[14]          
Investment, Identifier [Axis]: Acclime Holdings HK Limited, Business services, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,438 [2],[3],[4],[8]   2,438 [2],[3],[4],[8]   2,461 [5],[6],[7],[9]          
Cost   2,462 [2],[3],[4],[8]   2,462 [2],[3],[4],[8]   2,457 [5],[6],[7],[9]          
Investment, Identifier [Axis]: Accurus Aerospace Corporation, Aerospace & Defense, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   319 [4],[13]   319 [4],[13]   512 [7],[14]          
Cost   438 [4],[13]   438 [4],[13]   438 [7],[14]          
Investment, Identifier [Axis]: Accurus Aerospace Corporation, Aerospace & Defense, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   11,817 [3],[4],[11]   11,817 [3],[4],[11]   11,768 [6],[7],[12]          
Cost   11,946 [3],[4],[11]   11,946 [3],[4],[11]   11,994 [6],[7],[12]          
Investment, Identifier [Axis]: Accurus Aerospace Corporation, Aerospace & Defense, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   1,795 [3],[4],[10],[11]   1,795 [3],[4],[10],[11]   1,602 [6],[7],[12],[23]          
Cost   1,822 [3],[4],[10],[11]   1,822 [3],[4],[10],[11]   1,646 [6],[7],[12],[23]          
Investment, Identifier [Axis]: Acogroup, Business Services, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,981 [3],[4],[8],[24]   6,981 [3],[4],[8],[24]   7,226 [6],[7],[9],[20]          
Cost   8,002 [3],[4],[8],[24]   8,002 [3],[4],[8],[24]   7,962 [6],[7],[9],[20]          
Investment, Identifier [Axis]: Adhefin International, Industrial Other, First Lien Senior Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,770 [3],[4],[8],[10],[19]   1,770 [3],[4],[8],[10],[19]   1,778 [6],[7],[9],[20],[23]          
Cost   1,764 [3],[4],[8],[10],[19]   1,764 [3],[4],[8],[10],[19]   1,760 [6],[7],[9],[20],[23]          
Investment, Identifier [Axis]: Adhefin International, Industrial Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   336 [3],[4],[8],[19]   336 [3],[4],[8],[19]   300 [6],[7],[9],[20]          
Cost   341 [3],[4],[8],[19]   341 [3],[4],[8],[19]   296 [6],[7],[9],[20]          
Investment, Identifier [Axis]: Advantage Software Company (The), LLC, Advertising, Printing & Publishing, Class A1 Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   679 [4],[13]   679 [4],[13]   697 [7],[14]          
Cost   280 [4],[13]   280 [4],[13]   280 [7],[14]          
Investment, Identifier [Axis]: Advantage Software Company (The), LLC, Advertising, Printing & Publishing, Class A2 Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   175 [4],[13]   175 [4],[13]   180 [7],[14]          
Cost   72 [4],[13]   72 [4],[13]   72 [7],[14]          
Investment, Identifier [Axis]: Advantage Software Company (The), LLC, Advertising, Printing & Publishing, Class B1 Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   0 [4],[13]   0 [4],[13]   0 [7],[14]          
Cost   9 [4],[13]   9 [4],[13]   9 [7],[14]          
Investment, Identifier [Axis]: Advantage Software Company (The), LLC, Advertising, Printing & Publishing, Class B2 Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   0 [4],[13]   0 [4],[13]   0 [7],[14]          
Cost   2 [4],[13]   2 [4],[13]   2 [7],[14]          
Investment, Identifier [Axis]: Air Canada 2020-2 Class B Pass Through Trust, Airlines, Structured Secured Note - Class B                      
Schedule of Investments [Line Items]                      
Fair Value   3,014   3,014   3,587          
Cost   2,940   2,940   3,511          
Investment, Identifier [Axis]: Air Comm Corporation, LLC, Aerospace & Defense, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[12]           7,633          
Cost [6],[7],[12]           7,661          
Investment, Identifier [Axis]: Air Comm Corporation, LLC, Aerospace & Defense, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[11]   7,619   7,619              
Cost [3],[4],[11]   7,635   7,635              
Investment, Identifier [Axis]: Air Comm Corporation, LLC, Aerospace & Defense, First Lien Senior Secured Term Loan, 1                      
Schedule of Investments [Line Items]                      
Fair Value   1,286 [3],[4],[11]   1,286 [3],[4],[11]   1,296 [6],[7],[12]          
Cost   1,257 [3],[4],[11]   1,257 [3],[4],[11]   1,262 [6],[7],[12]          
Investment, Identifier [Axis]: AirX Climate Solutions, Inc,Diversified Manufacturing, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,296 [2],[3],[4],[10]   3,296 [2],[3],[4],[10]   3,226 [6],[7],[12],[23]          
Cost   3,220 [2],[3],[4],[10]   3,220 [2],[3],[4],[10]   3,229 [6],[7],[12],[23]          
Investment, Identifier [Axis]: AirX Climate Solutions, Inc,Diversified Manufacturing,Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   203 [2],[3],[4],[10]   203 [2],[3],[4],[10]   (12) [6],[7],[12],[23]          
Cost   195 [2],[3],[4],[10]   195 [2],[3],[4],[10]   (12) [6],[7],[12],[23]          
Investment, Identifier [Axis]: AlliA Insurance Brokers NV, Insurance, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,837 [3],[4],[8],[10],[19]   3,837 [3],[4],[8],[10],[19]   3,443 [6],[7],[9],[20],[23]          
Cost   3,697 [3],[4],[8],[10],[19]   3,697 [3],[4],[8],[10],[19]   3,320 [6],[7],[9],[20],[23]          
Investment, Identifier [Axis]: Alpine SG, LLC, High Tech Industries, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   22,792 [3],[4],[15],[17]   22,792 [3],[4],[15],[17]   22,792 [6],[7],[12],[18]          
Cost   22,680 [3],[4],[15],[17]   22,680 [3],[4],[15],[17]   22,679 [6],[7],[12],[18]          
Investment, Identifier [Axis]: Amalfi Midco, Healthcare, Class B Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   1,178 [4],[8],[13]   1,178 [4],[8],[13]   1,188 [7],[9],[14]          
Cost   1,040 [4],[8],[13]   1,040 [4],[8],[13]   1,040 [7],[9],[14]          
Investment, Identifier [Axis]: Amalfi Midco, Healthcare, Subordinated Loan Notes                      
Schedule of Investments [Line Items]                      
Fair Value   5,206 [4],[8]   5,206 [4],[8]   4,824 [7],[9]          
Cost   5,149 [4],[8]   5,149 [4],[8]   4,902 [7],[9]          
Investment, Identifier [Axis]: Amalfi Midco, Healthcare, Warrant                      
Schedule of Investments [Line Items]                      
Fair Value [7],[9],[14]           529          
Cost [7],[9],[14]           4          
Investment, Identifier [Axis]: Amalfi Midco, Healthcare, Warrants                      
Schedule of Investments [Line Items]                      
Fair Value [4],[8],[13]   750   750              
Cost [4],[8],[13]   4   4              
Investment, Identifier [Axis]: Americo Chemicals Products, LLC, Chemicals, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   100 [4],[13]   100 [4],[13]   89 [7],[14]          
Cost   88 [4],[13]   88 [4],[13]   88 [7],[14]          
Investment, Identifier [Axis]: Americo Chemicals Products, LLC, Chemicals, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,773 [3],[4],[15]   1,773 [3],[4],[15]   1,920 [6],[7],[16]          
Cost   1,736 [3],[4],[15]   1,736 [3],[4],[15]   1,891 [6],[7],[16]          
Investment, Identifier [Axis]: Americo Chemicals Products, LLC, Chemicals, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[4],[10],[15]   0 [3],[4],[10],[15]   (4) [6],[7],[16],[23]          
Cost   (10) [3],[4],[10],[15]   (10) [3],[4],[10],[15]   (10) [6],[7],[16],[23]          
Investment, Identifier [Axis]: Amtech LLC, Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[12]           2,988          
Cost [6],[7],[12]           2,964          
Investment, Identifier [Axis]: Amtech LLC, Technology, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[12],[23]           242          
Cost [6],[7],[12],[23]           237          
Investment, Identifier [Axis]: AnalytiChem Holding GmbH, Chemicals, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,092 [3],[4],[8],[19]   3,092 [3],[4],[8],[19]   3,173 [6],[7],[9],[20]          
Cost   3,186 [3],[4],[8],[19]   3,186 [3],[4],[8],[19]   3,181 [6],[7],[9],[20]          
Investment, Identifier [Axis]: AnalytiChem Holding GmbH, Chemicals, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   933 [3],[4],[8],[19]   933 [3],[4],[8],[19]   958 [6],[7],[9],[20]          
Cost   945 [3],[4],[8],[19]   945 [3],[4],[8],[19]   944 [6],[7],[9],[20]          
Investment, Identifier [Axis]: AnalytiChem Holding GmbH, Chemicals, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   1,644 [3],[4],[8],[19]   1,644 [3],[4],[8],[19]   1,678 [6],[7],[9],[20]          
Cost   1,588 [3],[4],[8],[19]   1,588 [3],[4],[8],[19]   1,585 [6],[7],[9],[20]          
Investment, Identifier [Axis]: AnalytiChem Holding GmbH, Chemicals, First Lien Senior Secured Term Loan 3                      
Schedule of Investments [Line Items]                      
Fair Value   1,006 [3],[4],[8],[11]   1,006 [3],[4],[8],[11]   1,002 [6],[7],[9],[12]          
Cost   1,019 [3],[4],[8],[11]   1,019 [3],[4],[8],[11]   1,019 [6],[7],[9],[12]          
Investment, Identifier [Axis]: Anju Software, Inc. Application Software, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[25]           9,404          
Cost [6],[7],[25]           13,255          
Investment, Identifier [Axis]: Anju Software, Inc. Application Software, Super Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[23]           817          
Cost [6],[7],[23]           823          
Investment, Identifier [Axis]: Anju Software, Inc., Application Software, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[26]   892   892              
Cost [3],[4],[26]   13,283   13,283              
Investment, Identifier [Axis]: Anju Software, Inc., Application Software, Super Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[10]   889   889              
Cost [3],[4],[10]   910   910              
Investment, Identifier [Axis]: Apex Bidco Limited, Business Equipment & Services, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,842 [3],[4],[8],[27]   1,842 [3],[4],[8],[27]   1,858 [6],[7],[9],[28]          
Cost   1,888 [3],[4],[8],[27]   1,888 [3],[4],[8],[27]   1,883 [6],[7],[9],[28]          
Investment, Identifier [Axis]: Apex Bidco Limited, Business Equipment & Services, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[8],[27]   1,388   1,388              
Cost [3],[4],[8],[27]   1,306   1,306              
Investment, Identifier [Axis]: Apex Bidco Limited, Business Equipment & Services, First Lien Senior Secured Term Loan1                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[9],[28]           1,358          
Cost [6],[7],[9],[28]           1,300          
Investment, Identifier [Axis]: Apex Bidco Limited, Business Equipment & Services, Subordinated Senior Unsecured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   296 [4],[8]   296 [4],[8]   285 [7],[9]          
Cost   321 [4],[8]   321 [4],[8]   303 [7],[9]          
Investment, Identifier [Axis]: Apidos CLO XXIV, Series 2016-24A, Multi-Sector Holdings, Subordinated Structured Notes                      
Schedule of Investments [Line Items]                      
Fair Value   4,854 [8],[17]   4,854 [8],[17]   5,885 [9],[18]          
Cost   4,257 [8],[17]   4,257 [8],[17]   5,341 [9],[18]          
Investment, Identifier [Axis]: Aptus 1829. GmbH, Chemicals, Plastics, and Rubber, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value [7],[9],[14]           0          
Cost [7],[9],[14]           12          
Investment, Identifier [Axis]: Aptus 1829. GmbH, Chemicals, Plastics, and Rubber, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value [4],[8],[13]   0   0              
Cost [4],[8],[13]   12   12              
Investment, Identifier [Axis]: Aptus 1829. GmbH, Chemicals, Plastics, and Rubber, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,041 [3],[4],[8],[24]   2,041 [3],[4],[8],[24]   1,982 [6],[7],[9],[29]          
Cost   2,480 [3],[4],[8],[24]   2,480 [3],[4],[8],[24]   2,476 [6],[7],[9],[29]          
Investment, Identifier [Axis]: Aptus 1829. GmbH, Chemicals, Plastics, and Rubber, Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value [7],[9],[14]           4          
Cost [7],[9],[14]           120          
Investment, Identifier [Axis]: Aptus 1829. GmbH, Chemicals, Plastics, and Rubber, Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value [4],[8],[13]   10   10              
Cost [4],[8],[13]   120   120              
Investment, Identifier [Axis]: Apus Bidco Limited, Banking, Finance, Insurance & Real Estate, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,641 [3],[4],[8],[30]   3,641 [3],[4],[8],[30]   3,621 [6],[7],[9],[28]          
Cost   3,906 [3],[4],[8],[30]   3,906 [3],[4],[8],[30]   3,899 [6],[7],[9],[28]          
Investment, Identifier [Axis]: Aquavista Watersides 2 LTD, Transportation Services, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,021 [3],[4],[8],[10],[30]   6,021 [3],[4],[8],[10],[30]   5,839 [6],[7],[9],[23],[31]          
Cost   6,516 [3],[4],[8],[10],[30]   6,516 [3],[4],[8],[10],[30]   6,490 [6],[7],[9],[23],[31]          
Investment, Identifier [Axis]: Aquavista Watersides 2 LTD, Transportation Services, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,896 [3],[4],[8],[30]   1,896 [3],[4],[8],[30]   1,706 [6],[7],[9],[31]          
Cost   2,021 [3],[4],[8],[30]   2,021 [3],[4],[8],[30]   1,869 [6],[7],[9],[31]          
Investment, Identifier [Axis]: Arc Education, Consumer Cyclical, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,698 [3],[4],[8],[10],[19]   3,698 [3],[4],[8],[10],[19]   3,791 [6],[7],[9],[20],[23]          
Cost   3,479 [3],[4],[8],[10],[19]   3,479 [3],[4],[8],[10],[19]   3,471 [6],[7],[9],[20],[23]          
Investment, Identifier [Axis]: Arch Global Precision LLC, Industrial Machinery, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   8,788 [3],[4],[11]   8,788 [3],[4],[11]   8,993 [6],[7],[12]          
Cost   9,012 [3],[4],[11]   9,012 [3],[4],[11]   9,082 [6],[7],[12]          
Investment, Identifier [Axis]: Archimede, Consumer Services, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,089 [3],[4],[8],[19]   6,089 [3],[4],[8],[19]   6,304 [6],[7],[9],[20]          
Cost   6,486 [3],[4],[8],[19]   6,486 [3],[4],[8],[19]   6,475 [6],[7],[9],[20]          
Investment, Identifier [Axis]: Argus Bidco Limited, High Tech Industries, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   0 [4],[8],[13]   0 [4],[8],[13]   0 [7],[9],[14]          
Cost   1 [4],[8],[13]   1 [4],[8],[13]   1 [7],[9],[14]          
Investment, Identifier [Axis]: Argus Bidco Limited, High Tech Industries, Equity Loan Notes                      
Schedule of Investments [Line Items]                      
Fair Value   44 [4],[8]   44 [4],[8]   42 [7],[9]          
Cost   60 [4],[8]   60 [4],[8]   57 [7],[9]          
Investment, Identifier [Axis]: Argus Bidco Limited, High Tech Industries, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   1,551 [3],[4],[8],[19]   1,551 [3],[4],[8],[19]   125 [6],[7],[9],[12]          
Cost   1,551 [3],[4],[8],[19]   1,551 [3],[4],[8],[19]   129 [6],[7],[9],[12]          
Investment, Identifier [Axis]: Argus Bidco Limited, High Tech Industries, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   301 [3],[4],[8],[19]   301 [3],[4],[8],[19]   307 [6],[7],[9],[20]          
Cost   290 [3],[4],[8],[19]   290 [3],[4],[8],[19]   289 [6],[7],[9],[20]          
Investment, Identifier [Axis]: Argus Bidco Limited, High Tech Industries, First Lien Senior Secured Term Loan 3                      
Schedule of Investments [Line Items]                      
Fair Value   128 [3],[4],[8],[11]   128 [3],[4],[8],[11]   1,408 [6],[7],[9],[20]          
Cost   131 [3],[4],[8],[11]   131 [3],[4],[8],[11]   1,375 [6],[7],[9],[20]          
Investment, Identifier [Axis]: Argus Bidco Limited, High Tech Industries, First Lien Senior Secured Term Loan 4                      
Schedule of Investments [Line Items]                      
Fair Value   1,624 [3],[4],[8],[10],[27]   1,624 [3],[4],[8],[10],[27]   1,632 [6],[7],[9],[28]          
Cost   1,562 [3],[4],[8],[10],[27]   1,562 [3],[4],[8],[10],[27]   1,565 [6],[7],[9],[28]          
Investment, Identifier [Axis]: Argus Bidco Limited, High Tech Industries, First Lien Senior Secured Term Loan 5                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[9],[23],[28]           (28)          
Cost [6],[7],[9],[23],[28]           (11)          
Investment, Identifier [Axis]: Argus Bidco Limited, High Tech Industries, Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value   44 [4],[8]   44 [4],[8]   42 [7],[9]          
Cost   60 [4],[8]   60 [4],[8]   57 [7],[9]          
Investment, Identifier [Axis]: Argus Bidco Limited, High Tech Industries, Second Lien Term Loan Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   769 [4],[8]   769 [4],[8]   734 [7],[9]          
Cost   768 [4],[8]   768 [4],[8]   725 [7],[9]          
Investment, Identifier [Axis]: Armstrong Transport Group (Pele Buyer, LLC ), Air Freight & Logistics, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   2,538 [2],[3],[4]   2,538 [2],[3],[4]   3,790 [6],[7],[12]          
Cost   2,625 [2],[3],[4]   2,625 [2],[3],[4]   3,924 [6],[7],[12]          
Investment, Identifier [Axis]: Armstrong Transport Group (Pele Buyer, LLC ), Air Freight & Logistics, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   3,163 [2],[3],[4]   3,163 [2],[3],[4]   4,709 [6],[7],[12]          
Cost   3,298 [2],[3],[4]   3,298 [2],[3],[4]   4,858 [6],[7],[12]          
Investment, Identifier [Axis]: Astra Bidco Limited, Healthcare, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[9],[23],[28]           2,380          
Cost [6],[7],[9],[23],[28]           2,431          
Investment, Identifier [Axis]: Astra Bidco Limited, Healthcare, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[8],[10],[27]   2,358   2,358              
Cost [3],[4],[8],[10],[27]   2,444   2,444              
Investment, Identifier [Axis]: Astra Bidco Limited, Healthcare, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[8],[19]   309   309              
Cost [3],[4],[8],[19]   314   314              
Investment, Identifier [Axis]: Auxi International, Commercial Finance, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   1,401 [3],[4],[8],[24]   1,401 [3],[4],[8],[24]   1,427 [6],[7],[9],[29]          
Cost   1,535 [3],[4],[8],[24]   1,535 [3],[4],[8],[24]   1,532 [6],[7],[9],[29]          
Investment, Identifier [Axis]: Auxi International, Commercial Finance, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   791 [3],[4],[8],[30]   791 [3],[4],[8],[30]   788 [6],[7],[9],[31]          
Cost   907 [3],[4],[8],[30]   907 [3],[4],[8],[30]   905 [6],[7],[9],[31]          
Investment, Identifier [Axis]: Avance Clinical Bidco Pty Ltd, Healthcare, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,180 [3],[4],[8],[10],[32]   2,180 [3],[4],[8],[10],[32]   2,190 [6],[7],[9],[23],[33]          
Cost   2,319 [3],[4],[8],[10],[32]   2,319 [3],[4],[8],[10],[32]   2,434 [6],[7],[9],[23],[33]          
Investment, Identifier [Axis]: Aviation Technical Services, Inc., Aerospace & Defense, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   28,102 [3],[4],[15],[17]   28,102 [3],[4],[15],[17]   29,162 [6],[7],[16],[18]          
Cost   27,969 [3],[4],[15],[17]   27,969 [3],[4],[15],[17]   28,114 [6],[7],[16],[18]          
Investment, Identifier [Axis]: Azalea Buyer, Inc., Technology, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value [7],[14]           288          
Cost [7],[14]           192          
Investment, Identifier [Axis]: Azalea Buyer, Inc., Technology, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value [4],[13]   273   273              
Cost [4],[13]   192   192              
Investment, Identifier [Axis]: Azalea Buyer, Inc., Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,808 [3],[4],[10],[15]   4,808 [3],[4],[10],[15]   4,809 [6],[7],[12],[23]          
Cost   4,742 [3],[4],[10],[15]   4,742 [3],[4],[10],[15]   4,767 [6],[7],[12],[23]          
Investment, Identifier [Axis]: Azalea Buyer, Inc., Technology, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[4],[10],[15]   0 [3],[4],[10],[15]   (3) [6],[7],[12],[23]          
Cost   (6) [3],[4],[10],[15]   (6) [3],[4],[10],[15]   (6) [6],[7],[12],[23]          
Investment, Identifier [Axis]: Azalea Buyer, Inc., Technology, Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,693 [4]   1,693 [4]   1,529 [7]          
Cost   1,691 [4]   1,691 [4]   1,545 [7]          
Investment, Identifier [Axis]: BNI Global, LLC, Other Industrial, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[34]   9,615   9,615              
Cost [3],[4],[34]   9,706   9,706              
Investment, Identifier [Axis]: BPG Holdings IV Corp, Capital Goods, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   13,011 [3],[4],[11]   13,011 [3],[4],[11]   13,401 [6],[7],[12]          
Cost   13,457 [3],[4],[11]   13,457 [3],[4],[11]   13,474 [6],[7],[12]          
Investment, Identifier [Axis]: BVI Medical, Inc., Healthcare, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   9,734 [3],[4],[19]   9,734 [3],[4],[19]   9,541 [6],[7],[20]          
Cost   9,542 [3],[4],[19]   9,542 [3],[4],[19]   9,493 [6],[7],[20]          
Investment, Identifier [Axis]: Bariacum S.A, Consumer Products, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,209 [3],[4],[8],[24]   3,209 [3],[4],[8],[24]   3,314 [6],[7],[9],[29]          
Cost   3,254 [3],[4],[8],[24]   3,254 [3],[4],[8],[24]   3,248 [6],[7],[9],[29]          
Investment, Identifier [Axis]: Benify (Bennevis AB), High Tech Industries, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   891 [3],[4],[8],[35]   891 [3],[4],[8],[35]   1,096 [6],[7],[9],[36]          
Cost   995 [3],[4],[8],[35]   995 [3],[4],[8],[35]   1,163 [6],[7],[9],[36]          
Investment, Identifier [Axis]: Beyond Risk Management, Inc., Other Financial, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,150 [3],[4],[10],[11]   5,150 [3],[4],[10],[11]   2,944 [6],[7],[12],[23]          
Cost   5,241 [3],[4],[10],[11]   5,241 [3],[4],[10],[11]   2,923 [6],[7],[12],[23]          
Investment, Identifier [Axis]: Bidwax, Non-durable Consumer Goods, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   7,397 [3],[4],[8],[24]   7,397 [3],[4],[8],[24]   7,672 [6],[7],[9],[29]          
Cost   8,132 [3],[4],[8],[24]   8,132 [3],[4],[8],[24]   8,117 [6],[7],[9],[29]          
Investment, Identifier [Axis]: BigHand UK Bidco Limited, High Tech Industries, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [5],[6],[7],[9]           2,020          
Cost [5],[6],[7],[9]           2,109          
Investment, Identifier [Axis]: BigHand UK Bidco Limited, High Tech Industries, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[9],[12]           353          
Cost [6],[7],[9],[12]           377          
Investment, Identifier [Axis]: BigHand UK Bidco Limited, High Tech Industries, First Lien Senior Secured Term Loan 3                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[9],[28]           801          
Cost [6],[7],[9],[28]           896          
Investment, Identifier [Axis]: Biolam Group, Consumer Non-cyclical, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,943 [3],[4],[8],[10],[24]   1,943 [3],[4],[8],[10],[24]   2,266 [6],[7],[9],[20],[23]          
Cost   2,418 [3],[4],[8],[10],[24]   2,418 [3],[4],[8],[10],[24]   2,416 [6],[7],[9],[20],[23]          
Investment, Identifier [Axis]: Black Angus Steakhouses, LLC, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [37]   7,736   7,736   7,166 5,647        
Investment, Identifier [Axis]: Black Angus Steakhouses, LLC, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [37]   1,889   1,889   4,869 9,147        
Investment, Identifier [Axis]: Black Angus Steakhouses, LLC, Hotel, Gaming & Leisure, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[17],[26]   1,889   1,889              
Cost [4],[17],[26]   9,628   9,628              
Investment, Identifier [Axis]: Black Angus Steakhouses, LLC, Hotel, Gaming & Leisure, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   7,736 [3],[4],[15],[17]   7,736 [3],[4],[15],[17]   7,166 [6],[7],[16],[18]          
Cost   7,546 [3],[4],[15],[17]   7,546 [3],[4],[15],[17]   6,977 [6],[7],[16],[18]          
Investment, Identifier [Axis]: Black Angus Steakhouses, LLC, Hotel, Gaming & Leisure, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [7],[18],[25]           4,869          
Cost [7],[18],[25]           9,628          
Investment, Identifier [Axis]: Black Angus Steakhouses, LLC, Hotel, Gaming & Leisure, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value [7],[14],[18]           0          
Cost [7],[14],[18]           0          
Investment, Identifier [Axis]: Black Angus Steakhouses, LLC, Hotel, Gaming & Leisure, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value [4],[13],[17]   0   0              
Cost [4],[13],[17]   0   0              
Investment, Identifier [Axis]: Black Angus Steakhouses, LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value [37]   0   0   0 0        
Investment, Identifier [Axis]: Bounteous, Inc., Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,085 [3],[4],[11]   4,085 [3],[4],[11]   1,605 [6],[7],[12],[23]          
Cost   4,081 [3],[4],[11]   4,081 [3],[4],[11]   1,818 [6],[7],[12],[23]          
Investment, Identifier [Axis]: Bridger Aerospace Group Holdings, LLC, Environmental Industries, Municipal Revenue Bond                      
Schedule of Investments [Line Items]                      
Fair Value   27,953   27,953   28,802          
Cost   27,200   27,200   27,200          
Investment, Identifier [Axis]: Bridger Aerospace Group Holdings, LLC, Environmental Industries, Preferred Stock- Series A                      
Schedule of Investments [Line Items]                      
Fair Value   14,706 [4]   14,706 [4]   15,003 [7]          
Cost   16,125 [4]   16,125 [4]   15,552 [7]          
Investment, Identifier [Axis]: BrightSign LLC, Media & Entertainment, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,681 [3],[4],[11]   4,681 [3],[4],[11]   4,540 [6],[7],[12]          
Cost   4,653 [3],[4],[11]   4,653 [3],[4],[11]   4,673 [6],[7],[12]          
Investment, Identifier [Axis]: BrightSign LLC, Media & Entertainment, LLC units                      
Schedule of Investments [Line Items]                      
Fair Value   1,141 [4]   1,141 [4]   930 [7],[14]          
Cost   1,107 [4]   1,107 [4]   1,107 [7],[14]          
Investment, Identifier [Axis]: BrightSign LLC, Media & Entertainment, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   1,063 [3],[4],[10],[11]   1,063 [3],[4],[10],[11]   839 [6],[7],[12],[23]          
Cost   1,056 [3],[4],[10],[11]   1,056 [3],[4],[10],[11]   878 [6],[7],[12],[23]          
Investment, Identifier [Axis]: Brightline Trains Florida LLC, Transportation, Senior Secured Note                      
Schedule of Investments [Line Items]                      
Fair Value [7]           4,750          
Cost [7]           5,000          
Investment, Identifier [Axis]: Brightpay Limited, Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,156 [3],[4],[8],[10],[19]   2,156 [3],[4],[8],[10],[19]   2,250 [6],[7],[9],[20],[23]          
Cost   2,307 [3],[4],[8],[10],[19]   2,307 [3],[4],[8],[10],[19]   2,303 [6],[7],[9],[20],[23]          
Investment, Identifier [Axis]: British Airways 2020-1 Class B Pass Through Trust, Airlines, Structured Secured Note - Class B                      
Schedule of Investments [Line Items]                      
Fair Value           610          
Cost           596          
Investment, Identifier [Axis]: British Airways 2020-1 Class B Pass Through Trust, Structured Products, First Lien Senior Secured Bond                      
Schedule of Investments [Line Items]                      
Fair Value   565   565              
Cost   542   542              
Investment, Identifier [Axis]: British Engineering Services Holdco Limited, Commercial Services & Supplies, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   14,494 [3],[4],[8],[30]   14,494 [3],[4],[8],[30]   14,403 [6],[7],[9],[31]          
Cost   15,218 [3],[4],[8],[30]   15,218 [3],[4],[8],[30]   15,188 [6],[7],[9],[31]          
Investment, Identifier [Axis]: Brook & Whittle Holding Corp., Containers, Packaging & Glass, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,544 [3],[11],[17]   2,544 [3],[11],[17]   2,596 [6],[7],[12],[18]          
Cost   2,765 [3],[11],[17]   2,765 [3],[11],[17]   2,779 [6],[7],[12],[18]          
Investment, Identifier [Axis]: Brown Machine Group Holdings, LLC, Industrial Equipment, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,929 [3],[4],[15]   5,929 [3],[4],[15]   5,954 [6],[7],[16]          
Cost   6,083 [3],[4],[15]   6,083 [3],[4],[15]   6,075 [6],[7],[16]          
Investment, Identifier [Axis]: Burgess Point Purchaser Corporation, Auto Parts & Equipment, LP Units                      
Schedule of Investments [Line Items]                      
Fair Value   433 [4],[13]   433 [4],[13]   462 [7],[14]          
Cost   455 [4],[13]   455 [4],[13]   455 [7],[14]          
Investment, Identifier [Axis]: Burgess Point Purchaser Corporation, Auto Parts & Equipment, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,545 [3],[4],[15]   4,545 [3],[4],[15]   4,368 [6],[7],[16]          
Cost   4,396 [3],[4],[15]   4,396 [3],[4],[15]   4,387 [6],[7],[16]          
Investment, Identifier [Axis]: CAi Software, LLC, Technology, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   11,056 [3],[4],[11]   11,056 [3],[4],[11]   4,636 [6],[7],[12]          
Cost   11,066 [3],[4],[11]   11,066 [3],[4],[11]   4,883 [6],[7],[12]          
Investment, Identifier [Axis]: CAi Software, LLC, Technology, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   1,333 [3],[4],[11]   1,333 [3],[4],[11]   1,275 [6],[7],[12]          
Cost   1,339 [3],[4],[11]   1,339 [3],[4],[11]   1,343 [6],[7],[12]          
Investment, Identifier [Axis]: CAi Software, LLC, Technology, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (44) [3],[4],[10],[11]   (44) [3],[4],[10],[11]   (61) [6],[7],[12],[23]          
Cost   (41) [3],[4],[10],[11]   (41) [3],[4],[10],[11]   (13) [6],[7],[12],[23]          
Investment, Identifier [Axis]: CCFF Buyer, LLC, Food & Beverage, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[4],[10]   3,710   3,710              
Cost [2],[3],[4],[10]   3,700   3,700              
Investment, Identifier [Axis]: CCFF Buyer, LLC, Food & Beverage, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value [4],[13]   233   233              
Cost [4],[13]   233   233              
Investment, Identifier [Axis]: CCFF Buyer, LLC, Food & Beverage, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[4],[10]   (19)   (19)              
Cost [2],[3],[4],[10]   (20)   (20)              
Investment, Identifier [Axis]: CGI Parent, LLC, Business Equipment & Services, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   12,993 [3],[4],[11]   12,993 [3],[4],[11]   12,968 [6],[7],[12]          
Cost   12,756 [3],[4],[11]   12,756 [3],[4],[11]   12,966 [6],[7],[12]          
Investment, Identifier [Axis]: CGI Parent, LLC, Business Equipment & Services, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   1,364 [3],[4],[11]   1,364 [3],[4],[11]   1,344 [6],[7],[12]          
Cost   1,334 [3],[4],[11]   1,334 [3],[4],[11]   1,337 [6],[7],[12]          
Investment, Identifier [Axis]: CGI Parent, LLC, Business Equipment & Services, Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value   1,378 [4],[13]   1,378 [4],[13]   1,190 [7],[14]          
Cost   722 [4],[13]   722 [4],[13]   722 [7],[14]          
Investment, Identifier [Axis]: CGI Parent, LLC, Business Equipment & Services, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[4],[10],[11]   0 [3],[4],[10],[11]   (33) [6],[7],[12],[23]          
Cost   (21) [3],[4],[10],[11]   (21) [3],[4],[10],[11]   (24) [6],[7],[12],[23]          
Investment, Identifier [Axis]: CM Acquisitions Holdings Inc., Internet & Direct Marketing, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   13,131 [3],[4],[11]   13,131 [3],[4],[11]   13,399 [6],[7],[12]          
Cost   13,651 [3],[4],[11]   13,651 [3],[4],[11]   13,663 [6],[7],[12]          
Investment, Identifier [Axis]: CMT Opco Holding, LLC (Concept Machine), Distributors, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[16]           3,742          
Cost [6],[7],[16]           4,093          
Investment, Identifier [Axis]: CMT Opco Holding, LLC (Concept Machine), Distributors, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[11]   3,551   3,551              
Cost [3],[4],[11]   4,085   4,085              
Investment, Identifier [Axis]: CMT Opco Holding, LLC (Concept Machine), Distributors, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   578 [3],[4],[11]   578 [3],[4],[11]   609 [6],[7],[16]          
Cost   656 [3],[4],[11]   656 [3],[4],[11]   657 [6],[7],[16]          
Investment, Identifier [Axis]: CMT Opco Holding, LLC (Concept Machine), Distributors, Incremental Equity                      
Schedule of Investments [Line Items]                      
Fair Value [4],[13]   0   0              
Cost [4],[13]   154   154              
Investment, Identifier [Axis]: CMT Opco Holding, LLC (Concept Machine), Distributors, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   0 [4],[13]   0 [4],[13]   59 [7],[14]          
Cost   352 [4],[13]   352 [4],[13]   506 [7],[14]          
Investment, Identifier [Axis]: CSL DualCom, Tele-communications, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,034 [3],[4],[8],[10],[38]   2,034 [3],[4],[8],[10],[38]   2,052 [6],[7],[9],[23],[39]          
Cost   1,918 [3],[4],[8],[10],[38]   1,918 [3],[4],[8],[10],[38]   1,913 [6],[7],[9],[23],[39]          
Investment, Identifier [Axis]: CT Technologies Intermediate Holdings, Inc., Healthcare, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [6],[16],[18]           4,684          
Cost [6],[16],[18]           4,880          
Investment, Identifier [Axis]: CTI Foods Holdings Co., LLC, Food & Beverage, 2024 LIFO Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[11]   3,896   3,896              
Cost [3],[4],[11]   3,726   3,726              
Investment, Identifier [Axis]: CTI Foods Holdings Co., LLC, Food & Beverage, First Out Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[11]   737   737              
Cost [3],[4],[11]   737   737              
Investment, Identifier [Axis]: CTI Foods Holdings Co., LLC, Food & Beverage, Second Out Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[11]   555   555              
Cost [3],[4],[11]   555   555              
Investment, Identifier [Axis]: CTI Foods Holdings Co., LLC, Food & Beverage, 2024 First Out Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[11]   1,920   1,920              
Cost [3],[4],[11]   1,837   1,837              
Investment, Identifier [Axis]: CTI Foods Holdings Co., LLC, Food & Beverage, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value [4],[13]   579   579              
Cost [4],[13]   0   0              
Investment, Identifier [Axis]: CW Group Holdings, LLC, High Tech Industries, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,746 [3],[4],[11]   2,746 [3],[4],[11]   2,759 [6],[7],[12]          
Cost   2,717 [3],[4],[11]   2,717 [3],[4],[11]   2,726 [6],[7],[12]          
Investment, Identifier [Axis]: CW Group Holdings, LLC, High Tech Industries, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   300 [4]   300 [4]   289 [7],[14]          
Cost   161 [4]   161 [4]   161 [7],[14]          
Investment, Identifier [Axis]: Canadian Orthodontic Partners Corp., Healthcare, Class A Equity                      
Schedule of Investments [Line Items]                      
Fair Value [7],[9],[14]           0          
Cost [7],[9],[14]           389          
Investment, Identifier [Axis]: Canadian Orthodontic Partners Corp., Healthcare, Class A Equity                      
Schedule of Investments [Line Items]                      
Fair Value [4],[8],[13]   0   0              
Cost [4],[8],[13]   389   389              
Investment, Identifier [Axis]: Canadian Orthodontic Partners Corp., Healthcare, Class C - Warrants                      
Schedule of Investments [Line Items]                      
Fair Value [7],[9],[14]           0          
Cost [7],[9],[14]           0          
Investment, Identifier [Axis]: Canadian Orthodontic Partners Corp., Healthcare, Class C - Warrants                      
Schedule of Investments [Line Items]                      
Fair Value [4],[8],[13]   0   0              
Cost [4],[8],[13]   0   0              
Investment, Identifier [Axis]: Canadian Orthodontic Partners Corp., Healthcare, Class X Equity                      
Schedule of Investments [Line Items]                      
Fair Value [4],[8],[13]   0   0              
Cost [4],[8],[13]   35   35              
Investment, Identifier [Axis]: Canadian Orthodontic Partners Corp., Healthcare, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   451 [3],[4],[8],[26],[40]   451 [3],[4],[8],[26],[40]   1,322 [6],[7],[9],[41]          
Cost   1,860 [3],[4],[8],[26],[40]   1,860 [3],[4],[8],[26],[40]   1,858 [6],[7],[9],[41]          
Investment, Identifier [Axis]: Canadian Orthodontic Partners Corp., Healthcare, Super Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[8],[10]   28   28              
Cost [4],[8],[10]   14   14              
Investment, Identifier [Axis]: Caribou Holding Company, LLC, Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,271 [3],[4],[8],[11]   4,271 [3],[4],[8],[11]   4,240 [6],[7],[9],[12]          
Cost   4,279 [3],[4],[8],[11]   4,279 [3],[4],[8],[11]   4,273 [6],[7],[9],[12]          
Investment, Identifier [Axis]: Caribou Holding Company, LLC, Technology, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   948 [4],[8],[13]   948 [4],[8],[13]   982 [7],[9],[14]          
Cost   682 [4],[8],[13]   682 [4],[8],[13]   682 [7],[9],[14]          
Investment, Identifier [Axis]: Caribou Holding Company, LLC, Technology, LLC Units - Class X Equity                      
Schedule of Investments [Line Items]                      
Fair Value [7],[9],[14]           0          
Cost [7],[9],[14]           35          
Investment, Identifier [Axis]: Cascade Residential Services LLC, Electric, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   61 [3],[4],[10],[11]   61 [3],[4],[10],[11]   (8) [6],[7],[12],[23]          
Cost   59 [3],[4],[10],[11]   59 [3],[4],[10],[11]   (8) [6],[7],[12],[23]          
Investment, Identifier [Axis]: Cascade Residential Services LLC,Electric,First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,187 [3],[4],[10],[11]   3,187 [3],[4],[10],[11]   2,567 [6],[7],[12],[23]          
Cost   3,162 [3],[4],[10],[11]   3,162 [3],[4],[10],[11]   2,571 [6],[7],[12],[23]          
Investment, Identifier [Axis]: Catawba River Limited, Finance Companies, Structured - Junior Note                      
Schedule of Investments [Line Items]                      
Fair Value   3,353 [4],[8]   3,353 [4],[8]   943 [7],[9],[23]          
Cost   4,442 [4],[8]   4,442 [4],[8]   4,448 [7],[9],[23]          
Investment, Identifier [Axis]: Celebration Bidco, LLC, Chemicals, Plastics, & Rubber, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,214 [4],[11]   6,214 [4],[11]   6,214 [7],[12]          
Cost   6,214 [4],[11]   6,214 [4],[11]   6,214 [7],[12]          
Investment, Identifier [Axis]: Celebration Bidco, LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value [1]   13,773   13,773   12,177 0        
Investment, Identifier [Axis]: Celebration Bidco, LLC, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [1]   6,214   6,214   6,214 0        
Investment, Identifier [Axis]: Centralis Finco S.a.r.l., Diversified Financial Services, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[8],[19]   751   751              
Cost [3],[4],[8],[19]   757   757              
Investment, Identifier [Axis]: Centralis Finco S.a.r.l., Diversified Financial Services, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   2,312 [3],[4],[8],[19]   2,312 [3],[4],[8],[19]   3,144 [6],[7],[9],[20]          
Cost   2,175 [3],[4],[8],[19]   2,175 [3],[4],[8],[19]   2,923 [6],[7],[9],[20]          
Investment, Identifier [Axis]: Ceres Pharma NV, Pharma-ceuticals, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,236 [3],[4],[8],[24]   3,236 [3],[4],[8],[24]   3,307 [6],[7],[9],[29]          
Cost   3,285 [3],[4],[8],[24]   3,285 [3],[4],[8],[24]   3,278 [6],[7],[9],[29]          
Investment, Identifier [Axis]: Classic Collision (Summit Buyer, LLC), Auto Collision Repair Centers, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[12],[23]           6,602          
Cost [6],[7],[12],[23]           6,522          
Investment, Identifier [Axis]: Classic Collision (Summit Buyer, LLC), Auto Collision Repair Centers, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[12]           599          
Cost [6],[7],[12]           596          
Investment, Identifier [Axis]: Coastal Marina Holdings, LLC, Hotel, Gaming & Leisure ,LLC Units, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   13,773 [4],[13]   13,773 [4],[13]   12,177 [7],[14]          
Cost   12,177 [4],[13]   12,177 [4],[13]   12,177 [7],[14]          
Investment, Identifier [Axis]: Coastal Marina Holdings, LLC, Hotel, Gaming & Leisure, Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   7,243 [4]   7,243 [4]   6,868 [7]          
Cost   7,304 [4]   7,304 [4]   6,919 [7]          
Investment, Identifier [Axis]: Coastal Marina Holdings, LLC, Hotel, Gaming & Leisure, Subordinated Term Loan2                      
Schedule of Investments [Line Items]                      
Fair Value   15,710 [4]   15,710 [4]   15,649 [7]          
Cost   15,641 [4]   15,641 [4]   15,595 [7]          
Investment, Identifier [Axis]: Coastal Marina Holdings, LLC, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value [1]   16,086 [4],[13]   16,086 [4],[13]   12,160 [7],[14] 0        
Cost   14,645 [4],[13]   14,645 [4],[13]   10,944 [7],[14]          
Investment, Identifier [Axis]: Coastal Marina Holdings, LLC, Subordinated Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [1]   15,710   15,710   15,649 0        
Investment, Identifier [Axis]: Coastal Marina Holdings, LLC, Subordinated Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [1]   7,243   7,243   6,868 0        
Investment, Identifier [Axis]: Cobham Slip Rings SAS, Diversified Manufacturing, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,303 [3],[4],[8],[11]   1,303 [3],[4],[8],[11]   1,294 [6],[7],[9],[12]          
Cost   1,284 [3],[4],[8],[11]   1,284 [3],[4],[8],[11]   1,281 [6],[7],[9],[12]          
Investment, Identifier [Axis]: Coherus Biosciences, Inc., Biotechnology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[11]   3,871   3,871              
Cost [3],[4],[11]   3,874   3,874              
Investment, Identifier [Axis]: Coherus Biosciences, Inc., Biotechnology, Royalty Rights                      
Schedule of Investments [Line Items]                      
Fair Value [4]   3,871   3,871              
Cost [4]   3,871   3,871              
Investment, Identifier [Axis]: Command Alkon (Project Potter Buyer, LLC), Software, Class B Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   178 [4],[13]   178 [4],[13]   176 [7],[14]          
Cost   0 [4],[13]   0 [4],[13]   0 [7],[14]          
Investment, Identifier [Axis]: Command Alkon (Project Potter Buyer, LLC), Software, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[16]           13,345          
Cost [6],[7],[16]           13,236          
Investment, Identifier [Axis]: Compass Precision, LLC, Aerospace & Defense, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   148 [4],[13]   148 [4],[13]   142 [7],[14]          
Cost   125 [4],[13]   125 [4],[13]   125 [7],[14]          
Investment, Identifier [Axis]: Compass Precision, LLC, Aerospace & Defense, Senior Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   623 [4]   623 [4]   622 [7]          
Cost   636 [4]   636 [4]   632 [7]          
Investment, Identifier [Axis]: Comply365, LLC, Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,562 [3],[4],[11]   5,562 [3],[4],[11]   5,525 [6],[7],[12]          
Cost   5,491 [3],[4],[11]   5,491 [3],[4],[11]   5,525 [6],[7],[12]          
Investment, Identifier [Axis]: Comply365, LLC, Technology, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   13,084 [3],[4],[11]   13,084 [3],[4],[11]   12,997 [6],[7],[12]          
Cost   12,983 [3],[4],[11]   12,983 [3],[4],[11]   13,061 [6],[7],[12]          
Investment, Identifier [Axis]: Comply365, LLC, Technology, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (7) [3],[4],[10],[11]   (7) [3],[4],[10],[11]   (22) [6],[7],[12],[23]          
Cost   (14) [3],[4],[10],[11]   (14) [3],[4],[10],[11]   (16) [6],[7],[12],[23]          
Investment, Identifier [Axis]: Contabo Finco S.À R.L, Internet Software & Services, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,990 [3],[4],[8],[19]   4,990 [3],[4],[8],[19]   5,103 [6],[7],[9],[20]          
Cost   4,547 [3],[4],[8],[19]   4,547 [3],[4],[8],[19]   4,539 [6],[7],[9],[20]          
Investment, Identifier [Axis]: Core Scientific, Inc., Technology, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value [9],[14]           133          
Cost [9],[14]           296          
Investment, Identifier [Axis]: Core Scientific, Inc., Technology, Equipment Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [7],[9],[25]           22,976          
Cost [7],[9],[25]           29,619          
Investment, Identifier [Axis]: Coyo Uprising GmbH, Technology, Class A Units                      
Schedule of Investments [Line Items]                      
Fair Value   209 [4],[8],[13]   209 [4],[8],[13]   211 [7],[9],[14]          
Cost   205 [4],[8],[13]   205 [4],[8],[13]   205 [7],[9],[14]          
Investment, Identifier [Axis]: Coyo Uprising GmbH, Technology, Class B Units                      
Schedule of Investments [Line Items]                      
Fair Value   382 [4],[8],[13]   382 [4],[8],[13]   505 [7],[9],[14]          
Cost   446 [4],[8],[13]   446 [4],[8],[13]   446 [7],[9],[14]          
Investment, Identifier [Axis]: Coyo Uprising GmbH, Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,615 [3],[4],[8],[10],[19]   4,615 [3],[4],[8],[10],[19]   4,659 [6],[7],[9],[20],[23]          
Cost   5,070 [3],[4],[8],[10],[19]   5,070 [3],[4],[8],[10],[19]   4,945 [6],[7],[9],[20],[23]          
Investment, Identifier [Axis]: DISA Holdings Corp., Other Industrial, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,888 [3],[4],[10],[15]   6,888 [3],[4],[10],[15]   5,944 [6],[7],[16],[23]          
Cost   6,826 [3],[4],[10],[15]   6,826 [3],[4],[10],[15]   5,768 [6],[7],[16],[23]          
Investment, Identifier [Axis]: DISA Holdings Corp., Other Industrial, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (6) [3],[4],[10],[15]   (6) [3],[4],[10],[15]   90 [6],[7],[16],[23]          
Cost   (10) [3],[4],[10],[15]   (10) [3],[4],[10],[15]   79 [6],[7],[16],[23]          
Investment, Identifier [Axis]: DataServ Integrations, LLC, Technology, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[10],[11]   0   0              
Cost [3],[4],[10],[11]   (7)   (7)              
Investment, Identifier [Axis]: DataServ Integrations, LLC, Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,876 [3],[4],[11]   1,876 [3],[4],[11]   1,873 [6],[7],[12]          
Cost   1,843 [3],[4],[11]   1,843 [3],[4],[11]   1,863 [6],[7],[12]          
Investment, Identifier [Axis]: DataServ Integrations, LLC, Technology, Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   103 [4],[13]   103 [4],[13]   96 [7],[14]          
Cost   96 [4],[13]   96 [4],[13]   96 [7],[14]          
Investment, Identifier [Axis]: DataServ Integrations, LLC, Technology, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[12],[23]           (7)          
Cost [6],[7],[12],[23]           (8)          
Investment, Identifier [Axis]: David Wood Baking UK Ltd, Food Products, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[8],[27]   1,264   1,264              
Cost [3],[4],[8],[27]   1,251   1,251              
Investment, Identifier [Axis]: DecksDirect, LLC, Building Materials, Class A Units                      
Schedule of Investments [Line Items]                      
Fair Value [4],[13]   29   29              
Cost [4],[13]   47   47              
Investment, Identifier [Axis]: DecksDirect, LLC, Building Materials, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   37 [4],[13]   37 [4],[13]   41 [7],[14]          
Cost   55 [4],[13]   55 [4],[13]   55 [7],[14]          
Investment, Identifier [Axis]: DecksDirect, LLC, Building Materials, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,587 [3],[4],[15]   1,587 [3],[4],[15]   1,638 [6],[7],[16]          
Cost   1,591 [3],[4],[15]   1,591 [3],[4],[15]   1,644 [6],[7],[16]          
Investment, Identifier [Axis]: DecksDirect, LLC, Building Materials, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   340 [3],[4],[10],[15]   340 [3],[4],[10],[15]   (9) [6],[7],[16],[23]          
Cost   342 [3],[4],[10],[15]   342 [3],[4],[10],[15]   (6) [6],[7],[16],[23]          
Investment, Identifier [Axis]: Distinct Holdings, Inc., Systems Software, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,540 [3],[4],[11]   6,540 [3],[4],[11]   6,416 [6],[7],[12]          
Cost   6,540 [3],[4],[11]   6,540 [3],[4],[11]   6,540 [6],[7],[12]          
Investment, Identifier [Axis]: Diversified Packaging Holdings LLC, Containers, Packaging & Glass, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value [4],[13]   277   277              
Cost [4],[13]   277   277              
Investment, Identifier [Axis]: Diversified Packaging Holdings LLC, Containers, Packaging & Glass, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4]   709   709              
Cost [4]   709   709              
Investment, Identifier [Axis]: Dragon Bidco, Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,679 [3],[4],[8],[24]   2,679 [3],[4],[8],[24]   2,734 [6],[7],[9],[29]          
Cost   2,833 [3],[4],[8],[24]   2,833 [3],[4],[8],[24]   2,828 [6],[7],[9],[29]          
Investment, Identifier [Axis]: DreamStart Bidco SAS (d/b/a SmartTrade), Diversified Financial Services, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,279 [3],[4],[8],[19]   2,279 [3],[4],[8],[19]   2,349 [6],[7],[9],[20]          
Cost   2,328 [3],[4],[8],[19]   2,328 [3],[4],[8],[19]   2,324 [6],[7],[9],[20]          
Investment, Identifier [Axis]: Dryden 43 Senior Loan Fund, Series 2016-43A, Multi-Sector Holdings, Subordinated Structured Notes                      
Schedule of Investments [Line Items]                      
Fair Value   1,451 [8],[17]   1,451 [8],[17]   1,647 [9],[18]          
Cost   1,880 [8],[17]   1,880 [8],[17]   2,056 [9],[18]          
Investment, Identifier [Axis]: Dryden 49 Senior Loan Fund, Series 2017-49A, Multi-Sector Holdings, Subordinated Structured Notes                      
Schedule of Investments [Line Items]                      
Fair Value   1,149 [8],[13],[17]   1,149 [8],[13],[17]   3,319 [9],[14],[18]          
Cost   3,557 [8],[13],[17]   3,557 [8],[13],[17]   4,791 [9],[14],[18]          
Investment, Identifier [Axis]: Dune Group, Health Care Equipment, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   103 [3],[4],[8],[10],[19]   103 [3],[4],[8],[10],[19]   115 [6],[7],[9],[20],[23]          
Cost   116 [3],[4],[8],[10],[19]   116 [3],[4],[8],[10],[19]   115 [6],[7],[9],[20],[23]          
Investment, Identifier [Axis]: Dune Group, Health Care Equipment, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   1,380 [3],[4],[8],[11]   1,380 [3],[4],[8],[11]   1,401 [6],[7],[9],[12]          
Cost   1,420 [3],[4],[8],[11]   1,420 [3],[4],[8],[11]   1,419 [6],[7],[9],[12]          
Investment, Identifier [Axis]: Dunlipharder B.V., Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   995 [3],[4],[8],[15]   995 [3],[4],[8],[15]   993 [6],[7],[9],[12]          
Cost   989 [3],[4],[8],[15]   989 [3],[4],[8],[15]   988 [6],[7],[9],[12]          
Investment, Identifier [Axis]: Dwyer Instruments, Inc., Electric, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   14,702 [3],[4],[11]   14,702 [3],[4],[11]   14,479 [6],[7],[12]          
Cost   14,522 [3],[4],[11]   14,522 [3],[4],[11]   14,568 [6],[7],[12]          
Investment, Identifier [Axis]: EFC International, Automotive, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   373 [4],[13]   373 [4],[13]   301 [7],[14]          
Cost   231 [4],[13]   231 [4],[13]   231 [7],[14]          
Investment, Identifier [Axis]: EFC International, Automotive, Senior Unsecured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   778 [4]   778 [4]   764 [7]          
Cost   770 [4]   770 [4]   759 [7]          
Investment, Identifier [Axis]: EMI Porta Holdco LLC, Diversified Manufacturing, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   11,789 [3],[4],[11]   11,789 [3],[4],[11]   11,155 [6],[7],[12]          
Cost   12,292 [3],[4],[11]   12,292 [3],[4],[11]   12,371 [6],[7],[12]          
Investment, Identifier [Axis]: EMI Porta Holdco LLC, Diversified Manufacturing, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   80 [3],[4],[10],[11]   80 [3],[4],[10],[11]   2,233 [6],[7],[12],[23]          
Cost   203 [3],[4],[10],[11]   203 [3],[4],[10],[11]   2,524 [6],[7],[12],[23]          
Investment, Identifier [Axis]: EPS NASS Parent, Inc., Electrical Components & Equipment, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[12]           5,740          
Cost [6],[7],[12]           5,936          
Investment, Identifier [Axis]: Echo Global Logistics, Inc., Air Transportation, Partnership Equity                      
Schedule of Investments [Line Items]                      
Fair Value   379 [4],[13]   379 [4],[13]   491 [7],[14]          
Cost   531 [4],[13]   531 [4],[13]   531 [7],[14]          
Investment, Identifier [Axis]: Echo Global Logistics, Inc., Air Transportation, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   9,308 [3],[4],[11]   9,308 [3],[4],[11]   8,844 [6],[7],[12]          
Cost   9,345 [3],[4],[11]   9,345 [3],[4],[11]   9,336 [6],[7],[12]          
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   8,400   8,400   5,500          
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, Banking, Finance, Insurance & Real Estate, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   137,749 [4]   137,749 [4]   145,799 [7]          
Cost   92,963 [4]   92,963 [4]   92,963 [7]          
Investment, Identifier [Axis]: Eclipse Business Capital, LLC, Banking, Finance, Insurance & Real Estate, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   8,364 [4],[10],[15]   8,364 [4],[10],[15]   5,545 [7],[16],[23]          
Cost   8,285 [4],[10],[15]   8,285 [4],[10],[15]   5,457 [7],[16],[23]          
Investment, Identifier [Axis]: Eclipse Business Capital, LLC, Banking, Finance, Insurance & Real Estate, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,545 [4]   4,545 [4]   4,545 [7]          
Cost   4,516 [4]   4,516 [4]   4,513 [7]          
Investment, Identifier [Axis]: Eclipse Business Capital, LLC, LLC units                      
Schedule of Investments [Line Items]                      
Fair Value [1]   137,749   137,749   145,799 135,066        
Investment, Identifier [Axis]: Eclipse Business Capital, LLC, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [1]   8,364   8,364   5,545 5,273        
Investment, Identifier [Axis]: Eclipse Business Capital, LLC, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [1]   4,545   4,545   4,545 4,545        
Investment, Identifier [Axis]: Electrical Components International, Inc., Electrical Equipment, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[10],[15]   10,440   10,440              
Cost [3],[4],[10],[15]   10,445   10,445              
Investment, Identifier [Axis]: Ellkay, LLC, Healthcare & Pharmaceuticals, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[12]           4,430          
Cost [6],[7],[12]           4,835          
Investment, Identifier [Axis]: Ellkay, LLC, Healthcare &Pharmaceuticals, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[11]   4,246   4,246              
Cost [3],[4],[11]   4,829   4,829              
Investment, Identifier [Axis]: Entact Environmental Services, Inc., Environmental Industries, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,750 [3],[4],[11]   6,750 [3],[4],[11]   7,245 [6],[7],[12]          
Cost   6,759 [3],[4],[11]   6,759 [3],[4],[11]   7,189 [6],[7],[12]          
Investment, Identifier [Axis]: Eurofins Digital Testing International LUX Holding SARL, Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[8],[19],[26]   953   953              
Cost [3],[4],[8],[19],[26]   1,497   1,497              
Investment, Identifier [Axis]: Eurofins Digital Testing International LUX Holding SARL, Technology, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   (1,025) [3],[4],[8],[10],[19],[26]   (1,025) [3],[4],[8],[10],[19],[26]   1,047 [6],[7],[9],[20],[23]          
Cost   (56) [3],[4],[8],[10],[19],[26]   (56) [3],[4],[8],[10],[19],[26]   1,414 [6],[7],[9],[20],[23]          
Investment, Identifier [Axis]: Eurofins Digital Testing International LUX Holding SARL, Technology, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   490 [3],[4],[8],[11],[26]   490 [3],[4],[8],[11],[26]   700 [6],[7],[9],[12]          
Cost   781 [3],[4],[8],[11],[26]   781 [3],[4],[8],[11],[26]   780 [6],[7],[9],[12]          
Investment, Identifier [Axis]: Eurofins Digital Testing International LUX Holding SARL, Technology, First Lien Senior Secured Term Loan 3                      
Schedule of Investments [Line Items]                      
Fair Value   1,454 [3],[4],[8],[26],[27]   1,454 [3],[4],[8],[26],[27]   2,096 [6],[7],[9],[28]          
Cost   2,258 [3],[4],[8],[26],[27]   2,258 [3],[4],[8],[26],[27]   2,254 [6],[7],[9],[28]          
Investment, Identifier [Axis]: Eurofins Digital Testing International LUX Holding SARL, Technology, Senior Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   0 [4],[8],[26]   0 [4],[8],[26]   543 [7],[9]          
Cost   642 [4],[8],[26]   642 [4],[8],[26]   592 [7],[9]          
Investment, Identifier [Axis]: Events Software BidCo Pty Ltd, Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,537 [3],[4],[8],[10],[21]   1,537 [3],[4],[8],[10],[21]   1,535 [6],[7],[9],[23],[33]          
Cost   1,818 [3],[4],[8],[10],[21]   1,818 [3],[4],[8],[10],[21]   1,865 [6],[7],[9],[23],[33]          
Investment, Identifier [Axis]: Events Software BidCo Pty Ltd, Technology, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[9],[33]           20          
Cost [6],[7],[9],[33]           21          
Investment, Identifier [Axis]: Express Wash Acquisition Company, LLC, Consumer Cyclical, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,306 [3],[4],[11]   6,306 [3],[4],[11]   6,324 [6],[7],[12]          
Cost   6,303 [3],[4],[11]   6,303 [3],[4],[11]   6,300 [6],[7],[12]          
Investment, Identifier [Axis]: Express Wash Acquisition Company, LLC, Consumer Cyclical, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   137 [3],[4],[10],[11]   137 [3],[4],[10],[11]   138 [6],[7],[12],[23]          
Cost   138 [3],[4],[10],[11]   138 [3],[4],[10],[11]   137 [6],[7],[12],[23]          
Investment, Identifier [Axis]: F24 (Stairway BidCo Gmbh), Software Services, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,909 [3],[4],[8],[19]   1,909 [3],[4],[8],[19]   1,933 [6],[7],[9],[20]          
Cost   2,075 [3],[4],[8],[19]   2,075 [3],[4],[8],[19]   2,071 [6],[7],[9],[20]          
Investment, Identifier [Axis]: FSS Buyer LLC, Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,765 [3],[4],[11]   4,765 [3],[4],[11]   4,768 [6],[7],[12]          
Cost   4,703 [3],[4],[11]   4,703 [3],[4],[11]   4,721 [6],[7],[12]          
Investment, Identifier [Axis]: FSS Buyer LLC, Technology, LP Interest                      
Schedule of Investments [Line Items]                      
Fair Value   15 [4],[13]   15 [4],[13]   16 [7],[14]          
Cost   12 [4],[13]   12 [4],[13]   12 [7],[14]          
Investment, Identifier [Axis]: FSS Buyer LLC, Technology, LP Units                      
Schedule of Investments [Line Items]                      
Fair Value   68 [4],[13]   68 [4],[13]   72 [7],[14]          
Cost   51 [4],[13]   51 [4],[13]   51 [7],[14]          
Investment, Identifier [Axis]: Faraday, Healthcare, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,595 [3],[4],[8],[10],[19]   1,595 [3],[4],[8],[10],[19]   1,632 [6],[7],[9],[20],[23]          
Cost   1,596 [3],[4],[8],[10],[19]   1,596 [3],[4],[8],[10],[19]   1,591 [6],[7],[9],[20],[23]          
Investment, Identifier [Axis]: Ferrellgas L.P., Oil & Gas Equipment & Services, Opco Preferred Units                      
Schedule of Investments [Line Items]                      
Fair Value   2,742 [4]   2,742 [4]   2,670 [7]          
Cost   2,799 [4]   2,799 [4]   2,799 [7]          
Investment, Identifier [Axis]: FinThrive Software Intermediate Holdings Inc., Business Equipment & Services, Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value   5,705 [4]   5,705 [4]   5,266 [7]          
Cost   9,306 [4]   9,306 [4]   8,809 [7]          
Investment, Identifier [Axis]: Finaxy Holding, Banking, Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,959 [4],[8]   1,959 [4],[8]   2,009 [7],[9]          
Cost   1,945 [4],[8]   1,945 [4],[8]   1,943 [7],[9]          
Investment, Identifier [Axis]: Finaxy Holding,Banking,First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,327 [3],[4],[8],[19]   4,327 [3],[4],[8],[19]   4,431 [6],[7],[9],[20]          
Cost   4,293 [3],[4],[8],[19]   4,293 [3],[4],[8],[19]   4,288 [6],[7],[9],[20]          
Investment, Identifier [Axis]: Fineline Technologies, Inc, Consumer Services, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,263 [3],[4],[11]   1,263 [3],[4],[11]   1,275 [6],[7],[12]          
Cost   1,252 [3],[4],[11]   1,252 [3],[4],[11]   1,264 [6],[7],[12]          
Investment, Identifier [Axis]: Finexvet, Consumer Cyclical, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[9],[23],[29]           4,230          
Cost [6],[7],[9],[23],[29]           4,166          
Investment, Identifier [Axis]: Finexvet, Healthcare & Pharmaceuticals, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[8],[24]   4,733   4,733              
Cost [3],[4],[8],[24]   4,862   4,862              
Investment, Identifier [Axis]: FitzMark Buyer, LLC, Cargo & Transportation, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,085 [3],[4],[15]   4,085 [3],[4],[15]   4,073 [6],[7],[16]          
Cost   4,114 [3],[4],[15]   4,114 [3],[4],[15]   4,128 [6],[7],[16]          
Investment, Identifier [Axis]: Five Star Holding LLC, Packaging, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   502 [4],[13]   502 [4],[13]   855 [7],[14]          
Cost   967 [4],[13]   967 [4],[13]   967 [7],[14]          
Investment, Identifier [Axis]: Five Star Holding LLC, Packaging, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   12,364 [3],[4],[11]   12,364 [3],[4],[11]   13,404 [6],[7],[12]          
Cost   13,475 [3],[4],[11]   13,475 [3],[4],[11]   13,461 [6],[7],[12]          
Investment, Identifier [Axis]: Flexential Issuer, LLC, Information Technology, Structured Secured Note - Class C                      
Schedule of Investments [Line Items]                      
Fair Value   14,661   14,661   13,187          
Cost   14,873   14,873   14,862          
Investment, Identifier [Axis]: Flywheel Re Segregated Portfolio 2022-4, Investment Funds, Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value   3,535 [4],[8],[13]   3,535 [4],[8],[13]   3,196 [7],[9],[14]          
Cost   2,828 [4],[8],[13]   2,828 [4],[8],[13]   2,828 [7],[9],[14]          
Investment, Identifier [Axis]: Footco 40 Limited, Media & Entertainment, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   221 [3],[4],[8],[10],[27]   221 [3],[4],[8],[10],[27]   1,808 [6],[7],[9],[23],[28]          
Cost   223 [3],[4],[8],[10],[27]   223 [3],[4],[8],[10],[27]   1,849 [6],[7],[9],[23],[28]          
Investment, Identifier [Axis]: Footco 40 Limited, Media & Entertainment, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[8],[10],[27]   1,572   1,572              
Cost [3],[4],[8],[10],[27]   1,632   1,632              
Investment, Identifier [Axis]: Forest Buyer, LLC, Healthcare, Class A LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value [4],[13]   149   149              
Cost [4],[13]   146   146              
Investment, Identifier [Axis]: Forest Buyer, LLC, Healthcare, Class B LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value [4],[13]   33   33              
Cost [4],[13]   0   0              
Investment, Identifier [Axis]: Forest Buyer, LLC, Healthcare, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[10],[11]   (11)   (11)              
Cost [3],[4],[10],[11]   (12)   (12)              
Investment, Identifier [Axis]: Forest Buyer, LLC, Healthcare, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[11]   1,551   1,551              
Cost [3],[4],[11]   1,549   1,549              
Investment, Identifier [Axis]: Forest Buyer, LLC, Healthcare, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[10],[11]   (7)   (7)              
Cost [3],[4],[10],[11]   (7)   (7)              
Investment, Identifier [Axis]: Fortis Payment Systems, LLC, Other Financial, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   8,525 [3],[4],[10],[11]   8,525 [3],[4],[10],[11]   2,480 [6],[7],[12]          
Cost   8,550 [3],[4],[10],[11]   8,550 [3],[4],[10],[11]   2,443 [6],[7],[12]          
Investment, Identifier [Axis]: Fortis Payment Systems, LLC, Other Financial, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[10],[11]   (11)   (11)              
Cost [3],[4],[10],[11]   (10)   (10)              
Investment, Identifier [Axis]: FragilePak LLC, Transportation Services, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,416 [3],[4],[11]   4,416 [3],[4],[11]   4,384 [6],[7],[12]          
Cost   4,500 [3],[4],[11]   4,500 [3],[4],[11]   4,512 [6],[7],[12]          
Investment, Identifier [Axis]: FragilePak LLC, Transportation Services, Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   575 [4],[13]   575 [4],[13]   632 [7],[14]          
Cost   938 [4],[13]   938 [4],[13]   938 [7],[14]          
Investment, Identifier [Axis]: GB Eagle Buyer, Inc., Capital Goods, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   10,610 [3],[4],[11]   10,610 [3],[4],[11]   10,573 [6],[7],[12]          
Cost   10,355 [3],[4],[11]   10,355 [3],[4],[11]   10,361 [6],[7],[12]          
Investment, Identifier [Axis]: GB Eagle Buyer, Inc., Capital Goods, Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   1,338 [4],[13]   1,338 [4],[13]   880 [7],[14]          
Cost   687 [4],[13]   687 [4],[13]   687 [7],[14]          
Investment, Identifier [Axis]: GB Eagle Buyer, Inc., Capital Goods, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[4],[10],[11]   0 [3],[4],[10],[11]   (15) [6],[7],[12],[23]          
Cost   (57) [3],[4],[10],[11]   (57) [3],[4],[10],[11]   (64) [6],[7],[12],[23]          
Investment, Identifier [Axis]: GPNZ II GmbH, Healthcare, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value [4],[8],[13]   0   0              
Cost [4],[8],[13]   0   0              
Investment, Identifier [Axis]: GPNZ II GmbH, Healthcare, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value [7],[9],[14]           0          
Cost [7],[9],[14]           0          
Investment, Identifier [Axis]: GPNZ II GmbH, Healthcare, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[8],[10],[26],[34]   132   132              
Cost [3],[4],[8],[10],[26],[34]   447   447              
Investment, Identifier [Axis]: GPNZ II GmbH, Healthcare, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   212 [3],[4],[8],[10],[34]   212 [3],[4],[8],[10],[34]   265 [6],[7],[9],[42]          
Cost   215 [3],[4],[8],[10],[34]   215 [3],[4],[8],[10],[34]   446 [6],[7],[9],[42]          
Investment, Identifier [Axis]: GPNZ II GmbH, Healthcare, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [7],[9],[23]           124          
Cost [7],[9],[23]           122          
Investment, Identifier [Axis]: Global Academic Group Limited, Industrial Other, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   2,437 [3],[4],[8],[32]   2,437 [3],[4],[8],[32]   2,478 [6],[7],[9],[43]          
Cost   2,522 [3],[4],[8],[32]   2,522 [3],[4],[8],[32]   2,515 [6],[7],[9],[43]          
Investment, Identifier [Axis]: Global Academic Group Limited, Industrial Other, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   4,157 [3],[4],[8],[10],[44]   4,157 [3],[4],[8],[10],[44]   4,295 [6],[7],[9],[23],[45]          
Cost   4,242 [3],[4],[8],[10],[44]   4,242 [3],[4],[8],[10],[44]   4,228 [6],[7],[9],[23],[45]          
Investment, Identifier [Axis]: Gojo Industries, Inc. ,Industrial Other,First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   12,737 [3],[4],[11]   12,737 [3],[4],[11]   12,359 [6],[7],[12]          
Cost   12,735 [3],[4],[11]   12,735 [3],[4],[11]   12,374 [6],[7],[12]          
Investment, Identifier [Axis]: Graphpad Software, LLC, Internet Software & Services, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[10],[11]   9,244   9,244              
Cost [3],[4],[10],[11]   9,244   9,244              
Investment, Identifier [Axis]: Graphpad Software, LLC, Internet Software & Services, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[10],[11]   (4)   (4)              
Cost [3],[4],[10],[11]   (4)   (4)              
Investment, Identifier [Axis]: Greenhill II BV, Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   936 [3],[4],[8],[10],[19]   936 [3],[4],[8],[10],[19]   894 [6],[7],[9],[20],[23]          
Cost   880 [3],[4],[8],[10],[19]   880 [3],[4],[8],[10],[19]   815 [6],[7],[9],[20],[23]          
Investment, Identifier [Axis]: Groupe Guemas,Brokerage, Asset Managers & Exchanges ,First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,895 [3],[4],[8],[24]   4,895 [3],[4],[8],[24]   5,006 [6],[7],[9],[29]          
Cost   4,813 [3],[4],[8],[24]   4,813 [3],[4],[8],[24]   4,806 [6],[7],[9],[29]          
Investment, Identifier [Axis]: Groupe Product Life, Consumer Non-cyclical, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   782 [3],[4],[8],[10],[19]   782 [3],[4],[8],[10],[19]   1,059 [6],[7],[9],[20]          
Cost   755 [3],[4],[8],[10],[19]   755 [3],[4],[8],[10],[19]   1,006 [6],[7],[9],[20]          
Investment, Identifier [Axis]: Gulf Finance, LLC, Oil & Gas Exploration & Production, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   372 [3],[11]   372 [3],[11]   570 [6],[12]          
Cost   360 [3],[11]   360 [3],[11]   553 [6],[12]          
Investment, Identifier [Axis]: Gusto Aus BidCo Pty Ltd., Consumer Non-Cyclical, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,169 [3],[4],[8],[10],[32]   2,169 [3],[4],[8],[10],[32]   2,235 [6],[7],[9],[23],[43]          
Cost   2,088 [3],[4],[8],[10],[32]   2,088 [3],[4],[8],[10],[32]   2,083 [6],[7],[9],[23],[43]          
Investment, Identifier [Axis]: HEKA Invest, Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,020 [3],[4],[8],[10],[19]   5,020 [3],[4],[8],[10],[19]   5,080 [6],[7],[9],[20],[23]          
Cost   4,487 [3],[4],[8],[10],[19]   4,487 [3],[4],[8],[10],[19]   4,478 [6],[7],[9],[20],[23]          
Investment, Identifier [Axis]: HTI Technology & Industries, Electronic Component Manufacturing, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   10,526 [3],[4],[10],[11]   10,526 [3],[4],[10],[11]   11,355 [6],[7],[12],[23]          
Cost   11,016 [3],[4],[10],[11]   11,016 [3],[4],[10],[11]   11,311 [6],[7],[12],[23]          
Investment, Identifier [Axis]: HTI Technology & Industries, Electronic Component Manufacturing, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (59) [3],[4],[10],[11]   (59) [3],[4],[10],[11]   (7) [6],[7],[12],[23]          
Cost   (7) [3],[4],[10],[11]   (7) [3],[4],[10],[11]   (11) [6],[7],[12],[23]          
Investment, Identifier [Axis]: HW Holdco, LLC (Hanley Wood LLC), Advertising, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   11,072 [3],[4],[11]   11,072 [3],[4],[11]   10,816 [6],[7],[12]          
Cost   11,110 [3],[4],[11]   11,110 [3],[4],[11]   11,133 [6],[7],[12]          
Investment, Identifier [Axis]: HeartHealth Bidco Pty Ltd, Healthcare, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   647 [3],[4],[8],[10],[32]   647 [3],[4],[8],[10],[32]   674 [6],[7],[9],[23],[43]          
Cost   651 [3],[4],[8],[10],[32]   651 [3],[4],[8],[10],[32]   632 [6],[7],[9],[23],[43]          
Investment, Identifier [Axis]: Heartland Veterinary Partners, LLC, Healthcare, Subordinated Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   11,667 [4]   11,667 [4]   11,012 [7]          
Cost   12,724 [4]   12,724 [4]   12,300 [7]          
Investment, Identifier [Axis]: Heavy Construction Systems Specialists, LLC, Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   7,243 [3],[4],[15]   7,243 [3],[4],[15]   7,295 [6],[7],[16]          
Cost   7,169 [3],[4],[15]   7,169 [3],[4],[15]   7,194 [6],[7],[16]          
Investment, Identifier [Axis]: Heavy Construction Systems Specialists, LLC, Technology, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (5) [3],[4],[10],[15]   (5) [3],[4],[10],[15]   0 [6],[7],[16],[23]          
Cost   (30) [3],[4],[10],[15]   (30) [3],[4],[10],[15]   (34) [6],[7],[16],[23]          
Investment, Identifier [Axis]: Heilbron (f/k/a Sucsez (Bolt Bidco B.V.)), Insurance, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,139 [3],[4],[8],[34]   3,139 [3],[4],[8],[34]   3,155 [6],[7],[9],[29]          
Cost   3,676 [3],[4],[8],[34]   3,676 [3],[4],[8],[34]   3,676 [6],[7],[9],[29]          
Investment, Identifier [Axis]: HemaSource, Inc., Healthcare., Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   110 [4],[13]   110 [4],[13]   101 [7],[14]          
Cost   101 [4],[13]   101 [4],[13]   101 [7],[14]          
Investment, Identifier [Axis]: HemaSource, Inc., Healthcare., First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   7,238 [3],[4],[11]   7,238 [3],[4],[11]   7,101 [6],[7],[12]          
Cost   7,104 [3],[4],[11]   7,104 [3],[4],[11]   7,093 [6],[7],[12]          
Investment, Identifier [Axis]: HemaSource, Inc., Healthcare., Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (7) [3],[4],[10],[11]   (7) [3],[4],[10],[11]   342 [6],[7],[12],[23]          
Cost   (39) [3],[4],[10],[11]   (39) [3],[4],[10],[11]   341 [6],[7],[12],[23]          
Investment, Identifier [Axis]: Herbalife Ltd., Food Products, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[8],[15]   3,270   3,270              
Cost [3],[8],[15]   3,185   3,185              
Investment, Identifier [Axis]: Home Care Assistance, LLC, Healthcare & Pharmaceuticals, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,507 [3],[4],[11]   3,507 [3],[4],[11]   3,428 [6],[7],[12]          
Cost   3,697 [3],[4],[11]   3,697 [3],[4],[11]   3,707 [6],[7],[12]          
Investment, Identifier [Axis]: HomeX Services Group LLC, Home Construction, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,370 [3],[4],[10],[15]   1,370 [3],[4],[10],[15]   1,274 [6],[7],[16],[23]          
Cost   1,330 [3],[4],[10],[15]   1,330 [3],[4],[10],[15]   1,275 [6],[7],[16],[23]          
Investment, Identifier [Axis]: HomeX Services Group LLC, Home Construction, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[4],[10],[15]   0 [3],[4],[10],[15]   (7) [6],[7],[16],[23]          
Cost   (6) [3],[4],[10],[15]   (6) [3],[4],[10],[15]   (7) [6],[7],[16],[23]          
Investment, Identifier [Axis]: Honour Lane Logistics Holdings Limited, Transportation Services, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,500 [3],[4],[8],[15]   6,500 [3],[4],[8],[15]   6,160 [6],[7],[9],[16]          
Cost   6,527 [3],[4],[8],[15]   6,527 [3],[4],[8],[15]   6,513 [6],[7],[9],[16]          
Investment, Identifier [Axis]: Hygie 31 Holding, Pharma-ceuticals, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,558 [3],[4],[8],[24]   1,558 [3],[4],[8],[24]   1,739 [6],[7],[9],[29]          
Cost   1,375 [3],[4],[8],[24]   1,375 [3],[4],[8],[24]   1,504 [6],[7],[9],[29]          
Investment, Identifier [Axis]: Hylan Datacom & Electrical LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value [1]   0   0   2,013 4,496        
Investment, Identifier [Axis]: Hylan Datacom & Electrical LLC, Construction & Building, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value [7],[14]           2,013          
Cost [7],[14]           5,219          
Investment, Identifier [Axis]: Hylan Datacom & Electrical LLC, Construction & Building, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[12]           3,917          
Cost [6],[7],[12]           3,746          
Investment, Identifier [Axis]: Hylan Datacom & Electrical LLC, Construction & Building, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [1]   0   0   4,519 [6],[7],[12] 4,098        
Cost [6],[7],[12]           4,519          
Investment, Identifier [Axis]: Hylan Datacom & Electrical LLC, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [1]   0   0   3,917 3,917        
Investment, Identifier [Axis]: IM Square, Banking, Finance, Insurance & Real Estate, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,606 [3],[4],[8],[19]   2,606 [3],[4],[8],[19]   2,713 [6],[7],[9],[20]          
Cost   2,953 [3],[4],[8],[19]   2,953 [3],[4],[8],[19]   2,947 [6],[7],[9],[20]          
Investment, Identifier [Axis]: INOS 19-090 GmbH, Aerospace & Defense, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,968 [3],[4],[8],[19]   4,968 [3],[4],[8],[19]   5,711 [6],[7],[9],[20],[23]          
Cost   5,566 [3],[4],[8],[19]   5,566 [3],[4],[8],[19]   6,128 [6],[7],[9],[20],[23]          
Investment, Identifier [Axis]: ISTO Technologies II, LLC, Healthcare First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,769 [3],[4],[11]   6,769 [3],[4],[11]   6,616 [6],[7],[12]          
Cost   6,618 [3],[4],[11]   6,618 [3],[4],[11]   6,621 [6],[7],[12]          
Investment, Identifier [Axis]: ISTO Technologies II, LLC, Healthcare, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[4],[10],[11]   0 [3],[4],[10],[11]   (18) [6],[7],[12],[23]          
Cost   (15) [3],[4],[10],[11]   (15) [3],[4],[10],[11]   (17) [6],[7],[12],[23]          
Investment, Identifier [Axis]: ITI Intermodal, Inc., Transportation Services, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   583 [4],[13]   583 [4],[13]   715 [7],[14]          
Cost   750 [4],[13]   750 [4],[13]   750 [7],[14]          
Investment, Identifier [Axis]: ITI Intermodal, Inc., Transportation Services, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   783 [3],[4],[15]   783 [3],[4],[15]   12,757 [6],[7],[12]          
Cost   795 [3],[4],[15]   795 [3],[4],[15]   12,683 [6],[7],[12]          
Investment, Identifier [Axis]: ITI Intermodal, Inc., Transportation Services, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[15]   11,885   11,885              
Cost [3],[4],[15]   11,859   11,859              
Investment, Identifier [Axis]: ITI Intermodal, Inc., Transportation Services, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   191 [3],[4],[10],[15]   191 [3],[4],[10],[15]   67 [6],[7],[12],[23]          
Cost   200 [3],[4],[10],[15]   200 [3],[4],[10],[15]   70 [6],[7],[12],[23]          
Investment, Identifier [Axis]: Ice House America, L.L.C., Consumer Products, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[10],[11]   4,055   4,055              
Cost [3],[4],[10],[11]   4,034   4,034              
Investment, Identifier [Axis]: Ice House America, L.L.C., Consumer Products, LLC Units (2,703 units)                      
Schedule of Investments [Line Items]                      
Fair Value [4],[13]   305   305              
Cost [4],[13]   270   270              
Investment, Identifier [Axis]: Ice House America, L.L.C., Consumer Products, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[10],[11]   232   232              
Cost [3],[4],[10],[11]   230   230              
Investment, Identifier [Axis]: Infoniqa Holdings GmbH, Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,817 [3],[4],[8],[24]   2,817 [3],[4],[8],[24]   2,879 [6],[7],[9],[29]          
Cost   2,917 [3],[4],[8],[24]   2,917 [3],[4],[8],[24]   2,912 [6],[7],[9],[29]          
Investment, Identifier [Axis]: Innovad Group II BV, Beverage, Food & Tobacco, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   6,441 [3],[4],[8],[10],[24]   6,441 [3],[4],[8],[10],[24]   6,203 [6],[7],[9],[23],[29]          
Cost   7,104 [3],[4],[8],[10],[24]   7,104 [3],[4],[8],[10],[24]   6,835 [6],[7],[9],[23],[29]          
Investment, Identifier [Axis]: Innovad Group II BV, Beverage, Food & Tobacco, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   995 [3],[4],[8],[46]   995 [3],[4],[8],[46]   1,035 [6],[7],[9],[47]          
Cost   1,019 [3],[4],[8],[46]   1,019 [3],[4],[8],[46]   1,019 [6],[7],[9],[47]          
Investment, Identifier [Axis]: Innovative XCessories & Services, LLC, Automotive, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,790 [2],[3],[17]   2,790 [2],[3],[17]   2,469 [5],[6],[18]          
Cost   2,824 [2],[3],[17]   2,824 [2],[3],[17]   2,839 [5],[6],[18]          
Investment, Identifier [Axis]: Interstellar Group B.V., Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   63 [3],[4],[8],[19]   63 [3],[4],[8],[19]   1,676 [6],[7],[9],[20],[23]          
Cost   62 [3],[4],[8],[19]   62 [3],[4],[8],[19]   1,587 [6],[7],[9],[20],[23]          
Investment, Identifier [Axis]: Interstellar Group B.V., Technology, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[8],[10],[19]   1,537   1,537              
Cost [3],[4],[8],[10],[19]   1,529   1,529              
Investment, Identifier [Axis]: InvoCare Limited, Consumer Cyclical Services, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,022 [3],[4],[8],[10],[32]   2,022 [3],[4],[8],[10],[32]   2,051 [6],[7],[9],[23],[43]          
Cost   1,978 [3],[4],[8],[10],[32]   1,978 [3],[4],[8],[10],[32]   1,973 [6],[7],[9],[23],[43]          
Investment, Identifier [Axis]: Iqor US Inc., Services: Business, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [6],[16],[18]           2,622          
Cost [6],[16],[18]           2,683          
Investment, Identifier [Axis]: Isagenix International, LLC, Wholesale, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   0 [4],[13]   0 [4],[13]   0 [7],[14]          
Cost   0 [4],[13]   0 [4],[13]   0 [7],[14]          
Investment, Identifier [Axis]: Isagenix International, LLC, Wholesale, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   749 [3],[4],[11],[17]   749 [3],[4],[11],[17]   718 [6],[12],[18]          
Cost   601 [3],[4],[11],[17]   601 [3],[4],[11],[17]   542 [6],[12],[18]          
Investment, Identifier [Axis]: Isolstar Holding NV (IPCOM), Trading Companies & Distributors, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,116 [3],[4],[8],[10],[19]   5,116 [3],[4],[8],[10],[19]   4,778 [6],[7],[9],[20],[23]          
Cost   4,654 [3],[4],[8],[10],[19]   4,654 [3],[4],[8],[10],[19]   4,173 [6],[7],[9],[20],[23]          
Investment, Identifier [Axis]: Ivanti Software, Inc., High Tech Industries, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,818 [3],[11],[17]   3,818 [3],[11],[17]   4,800 [6],[12],[18]          
Cost   5,989 [3],[11],[17]   5,989 [3],[11],[17]   5,989 [6],[12],[18]          
Investment, Identifier [Axis]: JF Acquisition, LLC, Automotive, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,633 [3],[4],[11]   3,633 [3],[4],[11]   3,598 [6],[7],[12]          
Cost   3,723 [3],[4],[11]   3,723 [3],[4],[11]   3,730 [6],[7],[12]          
Investment, Identifier [Axis]: Jade Bidco Limited (Jane's), Aerospace & Defense, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   1,152 [3],[4],[8],[24]   1,152 [3],[4],[8],[24]   1,176 [6],[7],[9],[29]          
Cost   1,153 [3],[4],[8],[24]   1,153 [3],[4],[8],[24]   1,151 [6],[7],[9],[29]          
Investment, Identifier [Axis]: Jade Bidco Limited (Jane's), Aerospace & Defense, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   6,714 [2],[3],[4],[8]   6,714 [2],[3],[4],[8]   6,648 [5],[6],[7],[9]          
Cost   6,610 [2],[3],[4],[8]   6,610 [2],[3],[4],[8]   6,598 [5],[6],[7],[9]          
Investment, Identifier [Axis]: JetBlue 2019-1 Class B Pass Through Trust, Structured Products, Structured Secured Note - Class B                      
Schedule of Investments [Line Items]                      
Fair Value   2,808   2,808   3,026          
Cost   2,774   2,774   3,052          
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, Investment Funds & Vehicles, Member Interest                      
Schedule of Investments [Line Items]                      
Fair Value   41,182 [8],[10]   41,182 [8],[10]   41,053 [9],[23]          
Cost   35,158 [8],[10]   35,158 [8],[10]   35,158 [9],[23]          
Investment, Identifier [Axis]: Jocassee Partners LLC, Member Interest                      
Schedule of Investments [Line Items]                      
Fair Value   41,182   41,182   41,053 [1] 40,088 [1]        
Investment, Identifier [Axis]: Jon Bidco Limited, Healthcare, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,754 [3],[4],[8],[10],[44]   3,754 [3],[4],[8],[10],[44]   3,844 [6],[7],[9],[23],[45]          
Cost   4,146 [3],[4],[8],[10],[44]   4,146 [3],[4],[8],[10],[44]   4,133 [6],[7],[9],[23],[45]          
Investment, Identifier [Axis]: Jones Fish Hatcheries & Distributors LLC, Consumer Products, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,733 [3],[4],[11]   2,733 [3],[4],[11]   3,414 [6],[7],[12]          
Cost   2,749 [3],[4],[11]   2,749 [3],[4],[11]   3,421 [6],[7],[12]          
Investment, Identifier [Axis]: Jones Fish Hatcheries & Distributors LLC, Consumer Products, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[11]   683   683              
Cost [3],[4],[11]   679   679              
Investment, Identifier [Axis]: Jones Fish Hatcheries & Distributors LLC, Consumer Products, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   234 [4]   234 [4]   228 [7]          
Cost   107 [4]   107 [4]   107 [7]          
Investment, Identifier [Axis]: Jones Fish Hatcheries & Distributors LLC, Consumer Products, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (8) [3],[4],[10],[11]   (8) [3],[4],[10],[11]   (8) [6],[7],[12],[23]          
Cost   (5) [3],[4],[10],[11]   (5) [3],[4],[10],[11]   (6) [6],[7],[12],[23]          
Investment, Identifier [Axis]: Kano Laboratories LLC, Chemicals, Plastics & Rubber, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   8,520 [3],[4],[11]   8,520 [3],[4],[11]   5,545 [6],[7],[12],[23]          
Cost   8,468 [3],[4],[11]   8,468 [3],[4],[11]   5,506 [6],[7],[12],[23]          
Investment, Identifier [Axis]: Kano Laboratories LLC, Chemicals, Plastics & Rubber, Partnership Equity                      
Schedule of Investments [Line Items]                      
Fair Value   207 [4],[13]   207 [4],[13]   224 [7],[14]          
Cost   203 [4],[13]   203 [4],[13]   203 [7],[14]          
Investment, Identifier [Axis]: Kemmerer Operations, LLC, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value [1]           0 1,181        
Investment, Identifier [Axis]: Kemmerer Operations, LLC, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [1]           0 1,565        
Investment, Identifier [Axis]: Kene Acquisition, Inc. (En Engineering), Oil & Gas Equipment & Services, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[12]           7,031          
Cost [6],[7],[12]           7,037          
Investment, Identifier [Axis]: Kid Distro Holdings, LLC, Media & Entertainment, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   9,074 [3],[4],[11]   9,074 [3],[4],[11]   9,116 [6],[7],[12]          
Cost   8,984 [3],[4],[11]   8,984 [3],[4],[11]   9,039 [6],[7],[12]          
Investment, Identifier [Axis]: Kid Distro Holdings, LLC, Media & Entertainment, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   644 [4],[13]   644 [4],[13]   599 [7],[14]          
Cost   638 [4],[13]   638 [4],[13]   638 [7],[14]          
Investment, Identifier [Axis]: Kona Buyer, LLC, High Tech Industries, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   8,300 [3],[4],[11]   8,300 [3],[4],[11]   8,413 [6],[7],[12]          
Cost   8,275 [3],[4],[11]   8,275 [3],[4],[11]   8,302 [6],[7],[12]          
Investment, Identifier [Axis]: Lambir Bidco Limited, Healthcare, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,837 [3],[4],[8],[10],[24]   1,837 [3],[4],[8],[10],[24]   1,854 [6],[7],[9],[20],[23]          
Cost   1,966 [3],[4],[8],[10],[24]   1,966 [3],[4],[8],[10],[24]   1,961 [6],[7],[9],[20],[23]          
Investment, Identifier [Axis]: Lambir Bidco Limited, Healthcare, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,666 [4],[8]   1,666 [4],[8]   1,587 [7],[9]          
Cost   1,836 [4],[8]   1,836 [4],[8]   1,730 [7],[9]          
Investment, Identifier [Axis]: Lattice Group Holdings Bidco Limited, Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   699 [2],[3],[4],[8],[10]   699 [2],[3],[4],[8],[10]   659 [5],[6],[7],[9],[23]          
Cost   710 [2],[3],[4],[8],[10]   710 [2],[3],[4],[8],[10]   690 [5],[6],[7],[9],[23]          
Investment, Identifier [Axis]: Lattice Group Holdings Bidco Limited, Technology, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   34 [2],[3],[4],[8],[10]   34 [2],[3],[4],[8],[10]   16 [5],[6],[7],[9],[23]          
Cost   35 [2],[3],[4],[8],[10]   35 [2],[3],[4],[8],[10]   17 [5],[6],[7],[9],[23]          
Investment, Identifier [Axis]: LeadsOnline, LLC, Business Equipment & Services, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   10,070 [3],[4],[11]   10,070 [3],[4],[11]   10,096 [6],[7],[12]          
Cost   10,006 [3],[4],[11]   10,006 [3],[4],[11]   10,069 [6],[7],[12]          
Investment, Identifier [Axis]: LeadsOnline, LLC, Business Equipment & Services, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   189 [4]   189 [4]   239 [7]          
Cost   85 [4]   85 [4]   85 [7]          
Investment, Identifier [Axis]: LeadsOnline, LLC, Business Equipment & Services, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (17) [3],[4],[10],[11]   (17) [3],[4],[10],[11]   400 [6],[7],[12],[23]          
Cost   (27) [3],[4],[10],[11]   (27) [3],[4],[10],[11]   385 [6],[7],[12],[23]          
Investment, Identifier [Axis]: Learfield Communications, LLC, Broadcasting, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   5,505 [3],[15]   5,505 [3],[15]   5,311 [6],[16]          
Cost   5,490 [3],[15]   5,490 [3],[15]   5,517 [6],[16]          
Investment, Identifier [Axis]: Learfield Communications, LLC, Broadcasting, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   6,139 [4],[13]   6,139 [4],[13]   4,037 [7],[14]          
Cost   3,105 [4],[13]   3,105 [4],[13]   3,105 [7],[14]          
Investment, Identifier [Axis]: Legal Solutions Holdings, Business Services, Senior Subordinated Loan                      
Schedule of Investments [Line Items]                      
Fair Value   0 [4],[26],[48]   0 [4],[26],[48]   0 [7],[25],[49]          
Cost   10,129 [4],[26],[48]   10,129 [4],[26],[48]   10,129 [7],[25],[49]          
Investment, Identifier [Axis]: Lifestyle Intermediate II, LLC, Consumer Goods: Durable, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,705 [3],[4],[11],[17]   2,705 [3],[4],[11],[17]   2,675 [6],[7],[12],[18]          
Cost   3,006 [3],[4],[11],[17]   3,006 [3],[4],[11],[17]   3,006 [6],[7],[12],[18]          
Investment, Identifier [Axis]: Lifestyle Intermediate II, LLC, Consumer Goods: Durable, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[12],[18],[23]           (275)          
Cost [6],[7],[12],[18],[23]           0          
Investment, Identifier [Axis]: LivTech Purchaser, Inc., Business Services, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   862 [2],[3],[4]   862 [2],[3],[4]   860 [6],[7],[12]          
Cost   859 [2],[3],[4]   859 [2],[3],[4]   858 [6],[7],[12]          
Investment, Identifier [Axis]: LogMeIn, Inc., High Tech Industries, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [6],[16],[18]           1,274          
Cost [6],[16],[18]           1,922          
Investment, Identifier [Axis]: Long Term Care Group, Inc., Healthcare, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   7,646 [3],[4],[15]   7,646 [3],[4],[15]   6,308 [6],[7],[16]          
Cost   8,399 [3],[4],[15]   8,399 [3],[4],[15]   8,149 [6],[7],[16]          
Investment, Identifier [Axis]: MB Purchaser, LLC, Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[10],[11]   1,952   1,952              
Cost [3],[4],[10],[11]   1,946   1,946              
Investment, Identifier [Axis]: MB Purchaser, LLC, Technology, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value [4],[13]   63   63              
Cost [4],[13]   68   68              
Investment, Identifier [Axis]: MB Purchaser, LLC, Technology, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[10],[11]   (5)   (5)              
Cost [3],[4],[10],[11]   (6)   (6)              
Investment, Identifier [Axis]: MC Group Ventures Corporation, Business Services, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,019 [3],[4],[10],[11]   5,019 [3],[4],[10],[11]   4,133 [6],[7],[12],[23]          
Cost   5,021 [3],[4],[10],[11]   5,021 [3],[4],[10],[11]   4,088 [6],[7],[12],[23]          
Investment, Identifier [Axis]: MC Group Ventures Corporation, Business Services, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[10],[11]   4,096   4,096              
Cost [3],[4],[10],[11]   4,075   4,075              
Investment, Identifier [Axis]: MC Group Ventures Corporation, Business Services, Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value [7],[14]           778          
Cost [7],[14]           747          
Investment, Identifier [Axis]: MC Group Ventures Corporation, Business Services, Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value [4],[13]   939   939              
Cost [4],[13]   747   747              
Investment, Identifier [Axis]: MNS Buyer, Inc., Construction and Building, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   898 [3],[4],[15]   898 [3],[4],[15]   901 [6],[7],[16]          
Cost   887 [3],[4],[15]   887 [3],[4],[15]   893 [6],[7],[16]          
Investment, Identifier [Axis]: MNS Buyer, Inc., Construction and Building, Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   102 [4],[13]   102 [4],[13]   82 [7],[14]          
Cost   77 [4],[13]   77 [4],[13]   77 [7],[14]          
Investment, Identifier [Axis]: MVC Automotive Group GmbH, Bridge Loan                      
Schedule of Investments [Line Items]                      
Fair Value [37]   9,762   9,762   9,762 7,149        
Investment, Identifier [Axis]: MVC Automotive Group GmbH, Common Equity Interest                      
Schedule of Investments [Line Items]                      
Fair Value [37]   9,575   9,575   15,430 9,675        
Investment, Identifier [Axis]: MVC Automotive Group Gmbh, Automotive, Bridge Loan                      
Schedule of Investments [Line Items]                      
Fair Value   9,762 [4],[8],[48]   9,762 [4],[8],[48]   9,762 [7],[9],[49]          
Cost   9,762 [4],[8],[48]   9,762 [4],[8],[48]   9,762 [7],[9],[49]          
Investment, Identifier [Axis]: MVC Automotive Group Gmbh, Automotive, Common Equity interest                      
Schedule of Investments [Line Items]                      
Fair Value   9,575 [4],[8],[13],[48]   9,575 [4],[8],[13],[48]   15,430 [7],[9],[14],[49]          
Cost   9,553 [4],[8],[13],[48]   9,553 [4],[8],[13],[48]   9,553 [7],[9],[14],[49]          
Investment, Identifier [Axis]: MVC Private Equity Fund LP, General Partnership Interest                      
Schedule of Investments [Line Items]                      
Fair Value   12   12   24 45        
Investment, Identifier [Axis]: MVC Private Equity Fund LP, Investment Funds & Vehicles, General Partnership Interest                      
Schedule of Investments [Line Items]                      
Fair Value   12 [8],[13],[48]   12 [8],[13],[48]   24 [9],[14],[49]          
Cost   201 [8],[13],[48]   201 [8],[13],[48]   201 [9],[14],[49]          
Investment, Identifier [Axis]: MVC Private Equity Fund LP, Investment Funds & Vehicles, Limited Partnership Interest                      
Schedule of Investments [Line Items]                      
Fair Value   501 [8],[13],[48]   501 [8],[13],[48]   981 [9],[14],[49]          
Cost   7,959 [8],[13],[48]   7,959 [8],[13],[48]   7,959 [9],[14],[49]          
Investment, Identifier [Axis]: MVC Private Equity Fund LP, Limited Partnership Interest                      
Schedule of Investments [Line Items]                      
Fair Value   501   501   981 1,793        
Investment, Identifier [Axis]: Magnetite XIX, Limited, Multi-Sector Holdings, Subordinated Notes                      
Schedule of Investments [Line Items]                      
Fair Value   5,230 [8],[11],[17]   5,230 [8],[11],[17]   5,067 [9],[12],[18]          
Cost   5,107 [8],[11],[17]   5,107 [8],[11],[17]   5,107 [9],[12],[18]          
Investment, Identifier [Axis]: Magnetite XIX, Limited, Multi-Sector Holdings, Subordinated Structured Notes                      
Schedule of Investments [Line Items]                      
Fair Value   7,844 [8],[17]   7,844 [8],[17]   8,181 [9],[18]          
Cost   8,507 [8],[17]   8,507 [8],[17]   9,014 [9],[18]          
Investment, Identifier [Axis]: Marmoutier Holding B.V., Consumer Products, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[8],[10],[19],[26]   (39)   (39)              
Cost [3],[4],[8],[10],[19],[26]   47   47              
Investment, Identifier [Axis]: Marmoutier Holding B.V., Consumer Products, Super Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[8],[19],[26]   182   182              
Cost [3],[4],[8],[19],[26]   184   184              
Investment, Identifier [Axis]: Marmoutier Holding B.V., Consumer Products, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   158 [3],[4],[8],[10],[19],[26]   158 [3],[4],[8],[10],[19],[26]   1,777 [6],[7],[9],[20],[23]          
Cost   375 [3],[4],[8],[10],[19],[26]   375 [3],[4],[8],[10],[19],[26]   2,415 [6],[7],[9],[20],[23]          
Investment, Identifier [Axis]: Marmoutier Holding B.V., Consumer Products, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[8],[19],[26]   908   908              
Cost [3],[4],[8],[19],[26]   2,171   2,171              
Investment, Identifier [Axis]: Marmoutier Holding B.V., Consumer Products, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[9],[20],[23]           6          
Cost [6],[7],[9],[20],[23]           44          
Investment, Identifier [Axis]: Marshall Excelsior Co., Capital Goods, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   10,752 [3],[4],[15]   10,752 [3],[4],[15]   10,462 [6],[7],[12]          
Cost   10,638 [3],[4],[15]   10,638 [3],[4],[15]   10,678 [6],[7],[12]          
Investment, Identifier [Axis]: Marshall Excelsior Co., Capital Goods, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   2,150 [3],[4],[10],[11]   2,150 [3],[4],[10],[11]   1,914 [6],[7],[12],[23]          
Cost   2,121 [3],[4],[10],[11]   2,121 [3],[4],[10],[11]   1,952 [6],[7],[12],[23]          
Investment, Identifier [Axis]: Media Recovery, Inc. (SpotSee), Containers, Packaging & Glass, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   2,779 [3],[4],[11]   2,779 [3],[4],[11]   2,764 [6],[7],[12]          
Cost   2,843 [3],[4],[11]   2,843 [3],[4],[11]   2,853 [6],[7],[12]          
Investment, Identifier [Axis]: Media Recovery, Inc. (SpotSee), Containers, Packaging & Glass, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   3,911 [3],[4],[27]   3,911 [3],[4],[27]   3,946 [6],[7],[28]          
Cost   4,203 [3],[4],[27]   4,203 [3],[4],[27]   4,243 [6],[7],[28]          
Investment, Identifier [Axis]: Median B.V., Healthcare, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   8,833 [3],[8],[30]   8,833 [3],[8],[30]   8,595 [6],[9],[31]          
Cost   9,877 [3],[8],[30]   9,877 [3],[8],[30]   9,849 [6],[9],[31]          
Investment, Identifier [Axis]: Medical Solutions Parent Holdings, Inc., Healthcare, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,999 [3],[11]   2,999 [3],[11]   3,708 [6],[12]          
Cost   4,389 [3],[11]   4,389 [3],[11]   4,386 [6],[12]          
Investment, Identifier [Axis]: Megawatt Acquisitionco, Inc., Aerospace & Defense, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value [4],[13]   0   0              
Cost [4],[13]   21   21              
Investment, Identifier [Axis]: Megawatt Acquisitionco, Inc., Aerospace & Defense, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[11]   4,117   4,117              
Cost [3],[4],[11]   4,111   4,111              
Investment, Identifier [Axis]: Megawatt Acquisitionco, Inc., Aerospace & Defense, Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value [4],[13]   173   173              
Cost [4],[13]   184   184              
Investment, Identifier [Axis]: Megawatt Acquisitionco, Inc., Aerospace & Defense, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[10],[11]   128   128              
Cost [3],[4],[10],[11]   127   127              
Investment, Identifier [Axis]: Mercell Holding AS, Technology, Class A Units                      
Schedule of Investments [Line Items]                      
Fair Value   127 [4],[8],[13]   127 [4],[8],[13]   128 [7],[9],[14]          
Cost   111 [4],[8],[13]   111 [4],[8],[13]   111 [7],[9],[14]          
Investment, Identifier [Axis]: Mercell Holding AS, Technology, Class B Units                      
Schedule of Investments [Line Items]                      
Fair Value   42 [4],[8],[13]   42 [4],[8],[13]   51 [7],[9],[14]          
Cost   0 [4],[8],[13]   0 [4],[8],[13]   0 [7],[9],[14]          
Investment, Identifier [Axis]: Mercell Holding AS, Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,917 [3],[4],[8],[10],[50]   2,917 [3],[4],[8],[10],[50]   3,041 [6],[7],[9],[23],[51]          
Cost   3,144 [3],[4],[8],[10],[50]   3,144 [3],[4],[8],[10],[50]   3,138 [6],[7],[9],[23],[51]          
Investment, Identifier [Axis]: Modern Star Holdings Bidco Pty Limited., Non-durable Consumer Goods, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   7,687 [3],[4],[8],[10],[21]   7,687 [3],[4],[8],[10],[21]   7,784 [6],[7],[9],[23],[33]          
Cost   8,389 [3],[4],[8],[10],[21]   8,389 [3],[4],[8],[10],[21]   8,367 [6],[7],[9],[23],[33]          
Investment, Identifier [Axis]: Moonlight Bidco Limited, Healthcare, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   176 [4],[8],[13]   176 [4],[8],[13]   1,380 [7],[9],[14]          
Cost   138 [4],[8],[13]   138 [4],[8],[13]   138 [7],[9],[14]          
Investment, Identifier [Axis]: Moonlight Bidco Limited, Healthcare, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,844 [3],[4],[8],[10],[27]   1,844 [3],[4],[8],[10],[27]   1,832 [6],[7],[9],[23],[28]          
Cost   1,880 [3],[4],[8],[10],[27]   1,880 [3],[4],[8],[10],[27]   1,875 [6],[7],[9],[23],[28]          
Investment, Identifier [Axis]: Murphy Midco Limited, Media, Diversified & Production, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   778 [3],[4],[8],[30]   778 [3],[4],[8],[30]   1,670 [6],[7],[9],[31]          
Cost   806 [3],[4],[8],[30]   806 [3],[4],[8],[30]   1,709 [6],[7],[9],[31]          
Investment, Identifier [Axis]: Murphy Midco Limited, Media, Diversified & Production, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[8],[30]   878   878              
Cost [3],[4],[8],[30]   906   906              
Investment, Identifier [Axis]: Music Reports, Inc., Media & Entertainment, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,500 [2],[3],[4]   6,500 [2],[3],[4]   6,884 [6],[7],[12]          
Cost   6,853 [2],[3],[4]   6,853 [2],[3],[4]   6,838 [6],[7],[12]          
Investment, Identifier [Axis]: NAW Buyer LLC, Technology, Equity Co Invest                      
Schedule of Investments [Line Items]                      
Fair Value   397 [4],[13]   397 [4],[13]   473 [7],[14]          
Cost   473 [4],[13]   473 [4],[13]   473 [7],[14]          
Investment, Identifier [Axis]: NAW Buyer LLC, Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   11,622 [3],[4],[10],[11]   11,622 [3],[4],[10],[11]   11,446 [6],[7],[12],[23]          
Cost   11,369 [3],[4],[10],[11]   11,369 [3],[4],[10],[11]   11,426 [6],[7],[12],[23]          
Investment, Identifier [Axis]: NAW Buyer LLC, Technology, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (15) [3],[4],[10],[11]   (15) [3],[4],[10],[11]   335 [6],[7],[12],[23]          
Cost   (41) [3],[4],[10],[11]   (41) [3],[4],[10],[11]   334 [6],[7],[12],[23]          
Investment, Identifier [Axis]: NF Holdco, LLC, Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,239 [3],[4],[15]   6,239 [3],[4],[15]   6,204 [6],[7],[12]          
Cost   6,155 [3],[4],[15]   6,155 [3],[4],[15]   6,174 [6],[7],[12]          
Investment, Identifier [Axis]: NF Holdco, LLC, Technology, LP Units                      
Schedule of Investments [Line Items]                      
Fair Value   646 [4],[13]   646 [4],[13]   633 [7],[14]          
Cost   659 [4],[13]   659 [4],[13]   659 [7],[14]          
Investment, Identifier [Axis]: NF Holdco, LLC, Technology, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   429 [3],[4],[10],[15]   429 [3],[4],[10],[15]   417 [6],[7],[12],[23]          
Cost   416 [3],[4],[10],[15]   416 [3],[4],[10],[15]   413 [6],[7],[12],[23]          
Investment, Identifier [Axis]: NGS US Finco, LLC (f/k/a Dresser Natural Gas Solutions), Energy Equipment & Services, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[16]           4,655          
Cost [6],[7],[16]           4,648          
Investment, Identifier [Axis]: NPM Investments 28 B.V., Healthcare, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,122 [3],[4],[8],[10],[19]   2,122 [3],[4],[8],[10],[19]   2,175 [6],[7],[9],[20],[23]          
Cost   1,917 [3],[4],[8],[10],[19]   1,917 [3],[4],[8],[10],[19]   1,912 [6],[7],[9],[20],[23]          
Investment, Identifier [Axis]: Napa Bidco Pty Ltd, Healthcare, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   18,450 [3],[4],[8],[32]   18,450 [3],[4],[8],[32]   18,321 [6],[7],[9],[43]          
Cost   19,662 [3],[4],[8],[32]   19,662 [3],[4],[8],[32]   19,616 [6],[7],[9],[43]          
Investment, Identifier [Axis]: Narda Acquisitionco., Inc., Aerospace & Defense, Class A Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value   556 [4],[13]   556 [4],[13]   535 [7],[14]          
Cost   459 [4],[13]   459 [4],[13]   459 [7],[14]          
Investment, Identifier [Axis]: Narda Acquisitionco., Inc., Aerospace & Defense, Class B Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   186 [4],[13]   186 [4],[13]   229 [7],[14]          
Cost   51 [4],[13]   51 [4],[13]   51 [7],[14]          
Investment, Identifier [Axis]: Narda Acquisitionco., Inc., Aerospace & Defense, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,113 [3],[4],[11]   5,113 [3],[4],[11]   5,562 [6],[7],[12]          
Cost   5,058 [3],[4],[11]   5,058 [3],[4],[11]   5,526 [6],[7],[12]          
Investment, Identifier [Axis]: Narda Acquisitionco., Inc., Aerospace & Defense, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[4],[10],[11]   0 [3],[4],[10],[11]   (8) [6],[7],[12],[23]          
Cost   (13) [3],[4],[10],[11]   (13) [3],[4],[10],[11]   (15) [6],[7],[12],[23]          
Investment, Identifier [Axis]: Navia Benefit Solutions, Inc., Healthcare & Pharmaceuticals, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[15]   2,310   2,310              
Cost [3],[4],[15]   2,296   2,296              
Investment, Identifier [Axis]: Navia Benefit Solutions, Inc., Healthcare & Pharmaceuticals, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[15]   329   329              
Cost [3],[4],[15]   327   327              
Investment, Identifier [Axis]: Navia Benefit Solutions, Inc., Healthcare & Pharmaceuticals, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[15]   2,930   2,930              
Cost [3],[4],[15]   2,884   2,884              
Investment, Identifier [Axis]: Navia Benefit Solutions, Inc., Healthcare & Pharmaceuticals, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[16]           2,918          
Cost [6],[7],[16]           2,913          
Investment, Identifier [Axis]: Navia Benefit Solutions, Inc., Healthcare & Pharmaceuticals, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[16]           2,620          
Cost [6],[7],[16]           2,645          
Investment, Identifier [Axis]: NeoxCo, Internet Software & Services, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,081 [3],[4],[8],[10],[24]   2,081 [3],[4],[8],[10],[24]   2,090 [6],[7],[9],[23],[29]          
Cost   2,046 [3],[4],[8],[10],[24]   2,046 [3],[4],[8],[10],[24]   2,041 [6],[7],[9],[23],[29]          
Investment, Identifier [Axis]: Next Holdco, LLC,Technology,First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   7,357 [3],[4],[10],[15]   7,357 [3],[4],[10],[15]   7,236 [6],[7],[16],[23]          
Cost   7,228 [3],[4],[10],[15]   7,228 [3],[4],[10],[15]   7,239 [6],[7],[16],[23]          
Investment, Identifier [Axis]: Next Holdco, LLC,Technology,Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[4],[10],[15]   0 [3],[4],[10],[15]   (11) [6],[7],[16],[23]          
Cost   (10) [3],[4],[10],[15]   (10) [3],[4],[10],[15]   (11) [6],[7],[16],[23]          
Investment, Identifier [Axis]: Northstar Recycling, LLC, Environmental Industries, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,438 [3],[4],[11]   2,438 [3],[4],[11]   2,434 [6],[7],[12]          
Cost   2,409 [3],[4],[11]   2,409 [3],[4],[11]   2,417 [6],[7],[12]          
Investment, Identifier [Axis]: Novotech Aus Bidco Pty Ltd, Healthcare, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   (10) [2],[3],[4],[8]   (10) [2],[3],[4],[8]   3,984 [5],[6],[7],[9],[23]          
Cost   (11) [2],[3],[4],[8]   (11) [2],[3],[4],[8]   3,944 [5],[6],[7],[9],[23]          
Investment, Identifier [Axis]: OA Buyer, Inc., Healthcare, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   8,295 [3],[4],[15]   8,295 [3],[4],[15]   5,485 [6],[7],[16]          
Cost   8,245 [3],[4],[15]   8,245 [3],[4],[15]   5,450 [6],[7],[16]          
Investment, Identifier [Axis]: OA Buyer, Inc., Healthcare, Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   491 [4]   491 [4]   276 [7],[14]          
Cost   211 [4]   211 [4]   211 [7],[14]          
Investment, Identifier [Axis]: OA Buyer, Inc., Healthcare, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   104 [3],[4],[10],[15]   104 [3],[4],[10],[15]   (12) [6],[7],[16],[23]          
Cost   94 [3],[4],[10],[15]   94 [3],[4],[10],[15]   (19) [6],[7],[16],[23]          
Investment, Identifier [Axis]: OAC Holdings I Corp, Automotive, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,549 [3],[4],[11]   3,549 [3],[4],[11]   3,454 [6],[7],[12]          
Cost   3,519 [3],[4],[11]   3,519 [3],[4],[11]   3,522 [6],[7],[12]          
Investment, Identifier [Axis]: OAC Holdings I Corp, Automotive, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   306 [3],[4],[10],[11]   306 [3],[4],[10],[11]   (47) [6],[7],[12],[23]          
Cost   296 [3],[4],[10],[11]   296 [3],[4],[10],[11]   (20) [6],[7],[12],[23]          
Investment, Identifier [Axis]: OG III B.V., Containers & Glass Products, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,326 [3],[4],[8],[19]   3,326 [3],[4],[8],[19]   3,390 [6],[7],[9],[20]          
Cost   3,689 [3],[4],[8],[19]   3,689 [3],[4],[8],[19]   3,684 [6],[7],[9],[20]          
Investment, Identifier [Axis]: ORTEC INTERNATIONAL NEWCO B.V. Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   960 [3],[4],[8],[19]   960 [3],[4],[8],[19]   985 [6],[7],[9],[20]          
Cost   974 [3],[4],[8],[19]   974 [3],[4],[8],[19]   973 [6],[7],[9],[20]          
Investment, Identifier [Axis]: OSP Hamilton Purchaser, LLC, Technology, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   12,924 [3],[4],[11]   12,924 [3],[4],[11]   12,934 [6],[7],[12]          
Cost   12,933 [3],[4],[11]   12,933 [3],[4],[11]   12,976 [6],[7],[12]          
Investment, Identifier [Axis]: OSP Hamilton Purchaser, LLC, Technology, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   835 [3],[4],[10],[11]   835 [3],[4],[10],[11]   (107) [6],[7],[12],[23]          
Cost   823 [3],[4],[10],[11]   823 [3],[4],[10],[11]   (105) [6],[7],[12],[23]          
Investment, Identifier [Axis]: OSP Hamilton Purchaser, LLC, Technology, First Lien Senior Secured Term Loan 3                      
Schedule of Investments [Line Items]                      
Fair Value   (18) [3],[4],[10],[11]   (18) [3],[4],[10],[11]   (22) [6],[7],[12],[23]          
Cost   (20) [3],[4],[10],[11]   (20) [3],[4],[10],[11]   (22) [6],[7],[12],[23]          
Investment, Identifier [Axis]: OSP Hamilton Purchaser, LLC, Technology, LP Units                      
Schedule of Investments [Line Items]                      
Fair Value   162 [4]   162 [4]   174 [7]          
Cost   174 [4]   174 [4]   174 [7]          
Investment, Identifier [Axis]: Ocelot Holdco LLC, Construction Machinery, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   0 [4],[13]   0 [4],[13]   0 [7],[14]          
Cost   0 [4],[13]   0 [4],[13]   0 [7],[14]          
Investment, Identifier [Axis]: Ocelot Holdco LLC, Construction Machinery, Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value   2,179 [4]   2,179 [4]   2,085 [7]          
Cost   1,562 [4]   1,562 [4]   1,562 [7]          
Investment, Identifier [Axis]: Ocelot Holdco LLC, Construction Machinery, Super Senior Takeback Loan                      
Schedule of Investments [Line Items]                      
Fair Value   549 [3],[4]   549 [3],[4]   549 [7]          
Cost   549 [3],[4]   549 [3],[4]   549 [7]          
Investment, Identifier [Axis]: Ocelot Holdco LLC, Construction Machinery, Takeback Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,933 [3],[4]   2,933 [3],[4]   2,933 [7]          
Cost   2,933 [3],[4]   2,933 [3],[4]   2,933 [7]          
Investment, Identifier [Axis]: Ocular Therapeutix, Inc., Pharma-ceuticals, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,802 [3],[4],[8],[15]   4,802 [3],[4],[8],[15]   3,812 [6],[7],[9],[16]          
Cost   3,825 [3],[4],[8],[15]   3,825 [3],[4],[8],[15]   3,817 [6],[7],[9],[16]          
Investment, Identifier [Axis]: Offen Inc., Transportation: Cargo, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,704 [2],[4],[17]   3,704 [2],[4],[17]   3,691 [5],[7],[18]          
Cost   3,686 [2],[4],[17]   3,686 [2],[4],[17]   3,691 [5],[7],[18]          
Investment, Identifier [Axis]: Omni Intermediate Holdings, LLC, Transportation, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[12]           7,864          
Cost [6],[7],[12]           8,291          
Investment, Identifier [Axis]: Options Technology Ltd., Computer Services, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,251 [2],[3],[4],[8]   2,251 [2],[3],[4],[8]   2,249 [5],[6],[7],[9]          
Cost   2,243 [2],[3],[4],[8]   2,243 [2],[3],[4],[8]   2,251 [5],[6],[7],[9]          
Investment, Identifier [Axis]: Oracle Vision Bidco Limited, Healthcare, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,893 [3],[4],[8],[30]   2,893 [3],[4],[8],[30]   2,918 [6],[7],[9],[31]          
Cost   3,168 [3],[4],[8],[30]   3,168 [3],[4],[8],[30]   3,162 [6],[7],[9],[31]          
Investment, Identifier [Axis]: Origin Bidco Limited, Technology, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   317 [3],[4],[8],[19]   317 [3],[4],[8],[19]   326 [6],[7],[9],[20]          
Cost   354 [3],[4],[8],[19]   354 [3],[4],[8],[19]   354 [6],[7],[9],[20]          
Investment, Identifier [Axis]: Origin Bidco Limited, Technology, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   533 [3],[4],[8],[11]   533 [3],[4],[8],[11]   531 [6],[7],[9],[12]          
Cost   524 [3],[4],[8],[11]   524 [3],[4],[8],[11]   523 [6],[7],[9],[12]          
Investment, Identifier [Axis]: PDQ.Com Corporation, Business Equipment & Services, Class A-2 Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value [7]           44          
Cost [7]           29          
Investment, Identifier [Axis]: PDQ.Com Corporation, Business Equipment & Services, Class A-2 Partnership Units (28.8 units)                      
Schedule of Investments [Line Items]                      
Fair Value [4]   47   47              
Cost [4]   29   29              
Investment, Identifier [Axis]: PDQ.Com Corporation, Business Equipment & Services, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[4],[10],[11]   0 [3],[4],[10],[11]   10,319 [6],[7],[12],[23]          
Cost   (32) [3],[4],[10],[11]   (32) [3],[4],[10],[11]   10,116 [6],[7],[12],[23]          
Investment, Identifier [Axis]: PDQ.Com Corporation, Business Equipment & Services, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   3,015 [3],[4],[11]   3,015 [3],[4],[11]   2,930 [6],[7],[12],[23]          
Cost   2,964 [3],[4],[11]   2,964 [3],[4],[11]   2,935 [6],[7],[12],[23]          
Investment, Identifier [Axis]: PDQ.Com Corporation, Business Equipment & Services, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [15]   4,457   4,457              
Cost [15]   4,358   4,358              
Investment, Identifier [Axis]: PDQ.Com Corporation, Business Equipment & Services, First Lien Senior Secured Term Loan 3                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[10],[15]   7,357   7,357              
Cost [3],[4],[10],[15]   7,268   7,268              
Investment, Identifier [Axis]: PSP Intermediate 4, LLC, Technology, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   851 [3],[4],[8],[10],[19]   851 [3],[4],[8],[10],[19]   820 [6],[7],[9],[23],[42]          
Cost   844 [3],[4],[8],[10],[19]   844 [3],[4],[8],[10],[19]   842 [6],[7],[9],[23],[42]          
Investment, Identifier [Axis]: PSP Intermediate 4, LLC, Technology, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   1,378 [3],[4],[8],[11]   1,378 [3],[4],[8],[11]   1,305 [6],[7],[9],[16]          
Cost   1,393 [3],[4],[8],[11]   1,393 [3],[4],[8],[11]   1,391 [6],[7],[9],[16]          
Investment, Identifier [Axis]: Panoche Energy Center LLC, Electric, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,907   3,907   4,224 [7]          
Cost   3,712   3,712   3,970 [7]          
Investment, Identifier [Axis]: Pare SAS (SAS Maurice MARLE), Health Care Equipment, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   2,772 [3],[4],[8],[24]   2,772 [3],[4],[8],[24]   2,804 [6],[7],[9],[29]          
Cost   2,859 [3],[4],[8],[24]   2,859 [3],[4],[8],[24]   2,837 [6],[7],[9],[29]          
Investment, Identifier [Axis]: Pare SAS (SAS Maurice MARLE), Health Care Equipment, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   1,500 [3],[4],[8],[11]   1,500 [3],[4],[8],[11]   1,482 [6],[7],[9],[12]          
Cost   1,500 [3],[4],[8],[11]   1,500 [3],[4],[8],[11]   1,500 [6],[7],[9],[12]          
Investment, Identifier [Axis]: Parkview Dental Holdings LLC, Healthcare, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[12],[23]           605          
Cost [6],[7],[12],[23]           606          
Investment, Identifier [Axis]: Parkview Dental Holdings LLC, Healthcare, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[11]   610   610              
Cost [3],[4],[11]   607   607              
Investment, Identifier [Axis]: Parkview Dental Holdings LLC, Healthcare, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   243 [4],[13]   243 [4],[13]   298 [7],[14]          
Cost   298 [4],[13]   298 [4],[13]   298 [7],[14]          
Investment, Identifier [Axis]: Patriot New Midco 1 Limited (Forensic Risk Alliance), Diversified Financial Services, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   2,082 [3],[4],[8],[19]   2,082 [3],[4],[8],[19]   2,327 [6],[7],[9],[20]          
Cost   2,134 [3],[4],[8],[19]   2,134 [3],[4],[8],[19]   2,315 [6],[7],[9],[20]          
Investment, Identifier [Axis]: Patriot New Midco 1 Limited (Forensic Risk Alliance), Diversified Financial Services, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   2,586 [3],[4],[8],[11]   2,586 [3],[4],[8],[11]   2,804 [6],[7],[9],[12]          
Cost   2,606 [3],[4],[8],[11]   2,606 [3],[4],[8],[11]   2,828 [6],[7],[9],[12]          
Investment, Identifier [Axis]: Perimeter Master Note Business Trust, Credit Card ABS, Structured Secured Note - Class A                      
Schedule of Investments [Line Items]                      
Fair Value   177 [4],[8]   177 [4],[8]   172 [7],[9]          
Cost   182 [4],[8]   182 [4],[8]   182 [7],[9]          
Investment, Identifier [Axis]: Perimeter Master Note Business Trust, Credit Card ABS, Structured Secured Note - Class B                      
Schedule of Investments [Line Items]                      
Fair Value   178 [4],[8]   178 [4],[8]   173 [7],[9]          
Cost   182 [4],[8]   182 [4],[8]   182 [7],[9]          
Investment, Identifier [Axis]: Perimeter Master Note Business Trust, Credit Card ABS, Structured Secured Note - Class C                      
Schedule of Investments [Line Items]                      
Fair Value   177 [4],[8]   177 [4],[8]   167 [7],[9]          
Cost   182 [4],[8]   182 [4],[8]   182 [7],[9]          
Investment, Identifier [Axis]: Perimeter Master Note Business Trust, Credit Card ABS, Structured Secured Note - Class D                      
Schedule of Investments [Line Items]                      
Fair Value   176 [4],[8]   176 [4],[8]   166 [7],[9]          
Cost   182 [4],[8]   182 [4],[8]   182 [7],[9]          
Investment, Identifier [Axis]: Perimeter Master Note Business Trust, Credit Card ABS, Structured Secured Note - Class E                      
Schedule of Investments [Line Items]                      
Fair Value   8,980 [4],[8]   8,980 [4],[8]   8,503 [7],[9]          
Cost   9,274 [4],[8]   9,274 [4],[8]   9,274 [7],[9]          
Investment, Identifier [Axis]: Permaconn BidCo Pty Ltd, Tele-communications, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,654 [3],[4],[8],[32]   2,654 [3],[4],[8],[32]   2,743 [6],[7],[9],[43]          
Cost   2,705 [3],[4],[8],[32]   2,705 [3],[4],[8],[32]   2,700 [6],[7],[9],[43]          
Investment, Identifier [Axis]: Polara Enterprises, L.L.C., Capital Equipment, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,038 [3],[4],[11]   1,038 [3],[4],[11]   1,118 [6],[7],[12]          
Cost   1,024 [3],[4],[11]   1,024 [3],[4],[11]   1,103 [6],[7],[12]          
Investment, Identifier [Axis]: Polara Enterprises, L.L.C., Capital Equipment, Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   1,225 [4]   1,225 [4]   1,285 [7]          
Cost   741 [4]   741 [4]   741 [7]          
Investment, Identifier [Axis]: Polara Enterprises, L.L.C., Capital Equipment, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[4],[10],[11]   0 [3],[4],[10],[11]   0 [6],[7],[12],[23]          
Cost   (6) [3],[4],[10],[11]   (6) [3],[4],[10],[11]   (7) [6],[7],[12],[23]          
Investment, Identifier [Axis]: Policy Services Company, LLC, Property & Casualty Insurance, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   51,703 [3],[4],[11]   51,703 [3],[4],[11]   50,498 [6],[7],[12]          
Cost   51,702 [3],[4],[11]   51,702 [3],[4],[11]   50,494 [6],[7],[12]          
Investment, Identifier [Axis]: Policy Services Company, LLC, Property & Casualty Insurance, Warrants - Class A                      
Schedule of Investments [Line Items]                      
Fair Value   1,304 [4],[13]   1,304 [4],[13]   1,297 [7],[14]          
Cost   0 [4],[13]   0 [4],[13]   0 [7],[14]          
Investment, Identifier [Axis]: Policy Services Company, LLC, Property & Casualty Insurance, Warrants - Class B                      
Schedule of Investments [Line Items]                      
Fair Value   440 [4],[13]   440 [4],[13]   438 [7],[14]          
Cost   0 [4],[13]   0 [4],[13]   0 [7],[14]          
Investment, Identifier [Axis]: Policy Services Company, LLC, Property & Casualty Insurance, Warrants - Class CC                      
Schedule of Investments [Line Items]                      
Fair Value   0 [4],[13]   0 [4],[13]   0 [7],[14]          
Cost   0 [4],[13]   0 [4],[13]   0 [7],[14]          
Investment, Identifier [Axis]: Policy Services Company, LLC, Property & Casualty Insurance, Warrants - Class D                      
Schedule of Investments [Line Items]                      
Fair Value   126 [4],[13]   126 [4],[13]   125 [7],[14]          
Cost   0 [4],[13]   0 [4],[13]   0 [7],[14]          
Investment, Identifier [Axis]: Polymer Solutions Group Holdings, LLC, Chemicals, Plastics & Rubber, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   0 [4],[13]   0 [4],[13]   0 [7],[14]          
Cost   0 [4],[13]   0 [4],[13]   0 [7],[14]          
Investment, Identifier [Axis]: Polymer Solutions Group Holdings, LLC, Chemicals, Plastics & Rubber, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   794 [3],[4],[15],[17]   794 [3],[4],[15],[17]   936 [6],[7],[16],[18]          
Cost   993 [3],[4],[15],[17]   993 [3],[4],[15],[17]   990 [6],[7],[16],[18]          
Investment, Identifier [Axis]: Premium Franchise Brands, LLC, Research & Consulting Services, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   9,945 [3],[4],[11]   9,945 [3],[4],[11]   7,511 [6],[7],[12]          
Cost   10,119 [3],[4],[11]   10,119 [3],[4],[11]   7,476 [6],[7],[12]          
Investment, Identifier [Axis]: Premium Invest, Brokerage, Asset Managers & Exchanges, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   8,885 [3],[4],[8],[10],[24]   8,885 [3],[4],[8],[10],[24]   9,031 [6],[7],[9],[23],[29]          
Cost   8,861 [3],[4],[8],[10],[24]   8,861 [3],[4],[8],[10],[24]   8,787 [6],[7],[9],[23],[29]          
Investment, Identifier [Axis]: Preqin MC Limited, Banking, Finance, Insurance & Real Estate, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,772 [2],[3],[4],[8]   2,772 [2],[3],[4],[8]   2,778 [5],[6],[7],[9]          
Cost   2,735 [2],[3],[4],[8]   2,735 [2],[3],[4],[8]   2,729 [5],[6],[7],[9]          
Investment, Identifier [Axis]: Process Equipment, Inc. (ProcessBarron), Industrial Air & Material Handling Equipment, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,260 [3],[4],[11]   5,260 [3],[4],[11]   5,462 [6],[7],[12]          
Cost   5,376 [3],[4],[11]   5,376 [3],[4],[11]   5,502 [6],[7],[12]          
Investment, Identifier [Axis]: Process Insights Acquisition, Inc., Electronics, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value [7],[14]           340          
Cost [7],[14]           281          
Investment, Identifier [Axis]: Process Insights Acquisition, Inc., Electronics, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value [4],[13]   300   300              
Cost [4],[13]   281   281              
Investment, Identifier [Axis]: Process Insights Acquisition, Inc., Electronics, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[4],[10],[11]   0 [3],[4],[10],[11]   5,293 [6],[7],[12],[23]          
Cost   (12) [3],[4],[10],[11]   (12) [3],[4],[10],[11]   5,186 [6],[7],[12],[23]          
Investment, Identifier [Axis]: Process Insights Acquisition, Inc., Electronics, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[11]   5,304   5,304              
Cost [3],[4],[11]   5,187   5,187              
Investment, Identifier [Axis]: Process Insights Acquisition, Inc., Electronics, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   304 [3],[4],[10],[11]   304 [3],[4],[10],[11]   (6) [6],[7],[12],[23]          
Cost   283 [3],[4],[10],[11]   283 [3],[4],[10],[11]   (23) [6],[7],[12],[23]          
Investment, Identifier [Axis]: Professional Datasolutions, Inc. (PDI), Application Software, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[12]           1,783          
Cost [6],[7],[12]           1,803          
Investment, Identifier [Axis]: ProfitOptics, LLC, Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,621 [2],[3],[4]   1,621 [2],[3],[4]   1,635 [5],[6],[7]          
Cost   1,600 [2],[3],[4]   1,600 [2],[3],[4]   1,611 [5],[6],[7]          
Investment, Identifier [Axis]: ProfitOptics, LLC, Technology, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   194 [4],[13]   194 [4],[13]   220 [7],[14]          
Cost   161 [4],[13]   161 [4],[13]   161 [7],[14]          
Investment, Identifier [Axis]: ProfitOptics, LLC, Technology, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   363 [2],[3],[4],[10]   363 [2],[3],[4],[10]   274 [5],[6],[7],[23]          
Cost   357 [2],[3],[4],[10]   357 [2],[3],[4],[10]   267 [5],[6],[7],[23]          
Investment, Identifier [Axis]: ProfitOptics, LLC, Technology, Second Lien Senior Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   73 [4]   73 [4]   73 [7]          
Cost   81 [4]   81 [4]   81 [7]          
Investment, Identifier [Axis]: Proppants Holding, LLC, Energy: Oil & Gas, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   0 [4],[17]   0 [4],[17]   0 [7],[18]          
Cost   0 [4],[17]   0 [4],[17]   0 [7],[18]          
Investment, Identifier [Axis]: Protego Bidco B.V., Aerospace & Defense, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,751 [3],[4],[8],[10],[24]   1,751 [3],[4],[8],[10],[24]   1,630 [6],[7],[9],[23],[29]          
Cost   1,878 [3],[4],[8],[10],[24]   1,878 [3],[4],[8],[10],[24]   1,739 [6],[7],[9],[23],[29]          
Investment, Identifier [Axis]: Protego Bidco B.V., Aerospace & Defense, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   2,099 [3],[4],[8],[24]   2,099 [3],[4],[8],[24]   2,110 [6],[7],[9],[29]          
Cost   2,286 [3],[4],[8],[24]   2,286 [3],[4],[8],[24]   2,283 [6],[7],[9],[29]          
Investment, Identifier [Axis]: QPE7 SPV1 BidCo Pty Ltd, Consumer Cyclical, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,826 [3],[4],[8],[52]   1,826 [3],[4],[8],[52]   1,852 [6],[7],[9],[22]          
Cost   1,973 [3],[4],[8],[52]   1,973 [3],[4],[8],[52]   1,970 [6],[7],[9],[22]          
Investment, Identifier [Axis]: Qualified Industries, LLC, Consumer Cyclical, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   91 [4],[13]   91 [4],[13]   64 [7],[14]          
Cost   3 [4],[13]   3 [4],[13]   3 [7],[14]          
Investment, Identifier [Axis]: Qualified Industries, LLC, Consumer Cyclical, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   597 [3],[4],[11]   597 [3],[4],[11]   592 [6],[7],[12]          
Cost   583 [3],[4],[11]   583 [3],[4],[11]   586 [6],[7],[12]          
Investment, Identifier [Axis]: Qualified Industries, LLC, Consumer Cyclical, Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value   167 [4],[13]   167 [4],[13]   159 [7],[14]          
Cost   144 [4],[13]   144 [4],[13]   144 [7],[14]          
Investment, Identifier [Axis]: Qualified Industries, LLC, Consumer Cyclical, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[4],[10],[11]   0 [3],[4],[10],[11]   (2) [6],[7],[12],[23]          
Cost   (6) [3],[4],[10],[11]   (6) [3],[4],[10],[11]   (6) [6],[7],[12],[23]          
Investment, Identifier [Axis]: Questel Unite, Business Services, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   7,051 [3],[4],[8],[11]   7,051 [3],[4],[8],[11]   6,732 [6],[7],[9],[12]          
Cost   7,002 [3],[4],[8],[11]   7,002 [3],[4],[8],[11]   6,912 [6],[7],[9],[12]          
Investment, Identifier [Axis]: R1 Holdings, LLC, Transportation, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,126 [2],[3],[4],[10]   6,126 [2],[3],[4],[10]   6,001 [5],[6],[7],[23]          
Cost   5,935 [2],[3],[4],[10]   5,935 [2],[3],[4],[10]   5,949 [5],[6],[7],[23]          
Investment, Identifier [Axis]: R1 Holdings, LLC, Transportation, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   122 [2],[3],[4],[10]   122 [2],[3],[4],[10]   80 [5],[6],[7],[23]          
Cost   70 [2],[3],[4],[10]   70 [2],[3],[4],[10]   66 [5],[6],[7],[23]          
Investment, Identifier [Axis]: RA Outdoors, LLC, High Tech Industries, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   12,723 [3],[4],[15],[17]   12,723 [3],[4],[15],[17]   12,723 [6],[7],[12],[18]          
Cost   12,658 [3],[4],[15],[17]   12,658 [3],[4],[15],[17]   12,658 [6],[7],[12],[18]          
Investment, Identifier [Axis]: RA Outdoors, LLC, High Tech Industries, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   1,216 [3],[4],[15],[17]   1,216 [3],[4],[15],[17]   778 [6],[7],[12],[18],[23]          
Cost   1,235 [3],[4],[15],[17]   1,235 [3],[4],[15],[17]   796 [6],[7],[12],[18],[23]          
Investment, Identifier [Axis]: REP SEKO MERGER SUB LLC, Air Freight & Logistics, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[19]   6,690   6,690              
Cost [3],[4],[19]   9,189   9,189              
Investment, Identifier [Axis]: REP SEKO MERGER SUB LLC, Air Freight & Logistics, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   1,408 [3],[4],[11]   1,408 [3],[4],[11]   9,498 [6],[7],[20]          
Cost   1,973 [3],[4],[11]   1,973 [3],[4],[11]   9,192 [6],[7],[20]          
Investment, Identifier [Axis]: REP SEKO MERGER SUB LLC, Air Freight & Logistics, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[12]           1,949          
Cost [6],[7],[12]           1,982          
Investment, Identifier [Axis]: REP SEKO MERGER SUB LLC, Air Freight & Logistics, First-Out Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[10],[11]   (4)   (4)              
Cost [3],[4],[10],[11]   (4)   (4)              
Investment, Identifier [Axis]: RPX Corporation, Research & Consulting Services, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,394 [3],[4],[11]   4,394 [3],[4],[11]   4,732 [6],[7],[12]          
Cost   4,360 [3],[4],[11]   4,360 [3],[4],[11]   4,709 [6],[7],[12]          
Investment, Identifier [Axis]: RTIC Subsidiary Holdings, LLC, Consumer Goods: Durable, Class A Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value   0 [4],[13],[17]   0 [4],[13],[17]   0 [7],[14],[18]          
Cost   4 [4],[13],[17]   4 [4],[13],[17]   4 [7],[14],[18]          
Investment, Identifier [Axis]: RTIC Subsidiary Holdings, LLC, Consumer Goods: Durable, Class B Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value   0 [4],[13],[17]   0 [4],[13],[17]   0 [7],[14],[18]          
Cost   0 [4],[13],[17]   0 [4],[13],[17]   0 [7],[14],[18]          
Investment, Identifier [Axis]: RTIC Subsidiary Holdings, LLC, Consumer Goods: Durable, Class C Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value   66 [4],[13],[17]   66 [4],[13],[17]   73 [7],[14],[18]          
Cost   450 [4],[13],[17]   450 [4],[13],[17]   450 [7],[14],[18]          
Investment, Identifier [Axis]: RTIC Subsidiary Holdings, LLC, Consumer Goods: Durable, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   0 [4],[13],[17]   0 [4],[13],[17]   0 [7],[14],[18]          
Cost   0 [4],[13],[17]   0 [4],[13],[17]   0 [7],[14],[18]          
Investment, Identifier [Axis]: RTIC Subsidiary Holdings, LLC, Consumer Goods: Durable, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[12],[18]           8,717          
Cost [6],[7],[12],[18]           8,968          
Investment, Identifier [Axis]: RTIC Subsidiary Holdings, LLC, Consumer Goods: Durable, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[12],[18],[23]           524          
Cost [6],[7],[12],[18],[23]           635          
Investment, Identifier [Axis]: Randys Holdings, Inc., Automobile Manufacturers. First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   627 [2],[3],[4],[10]   627 [2],[3],[4],[10]   9,890 [6],[7],[12],[23]          
Cost   610 [2],[3],[4],[10]   610 [2],[3],[4],[10]   9,835 [6],[7],[12],[23]          
Investment, Identifier [Axis]: Randys Holdings, Inc., Automobile Manufacturers. First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[4]   10,061   10,061              
Cost [2],[3],[4]   9,824   9,824              
Investment, Identifier [Axis]: Randys Holdings, Inc., Automobile Manufacturers. Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   549 [4],[13]   549 [4],[13]   570 [7],[14]          
Cost   533 [4],[13]   533 [4],[13]   533 [7],[14]          
Investment, Identifier [Axis]: Randys Holdings, Inc., Automobile Manufacturers. Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   350 [3],[4],[10],[11]   350 [3],[4],[10],[11]   505 [6],[7],[12],[23]          
Cost   309 [3],[4],[10],[11]   309 [3],[4],[10],[11]   493 [6],[7],[12],[23]          
Investment, Identifier [Axis]: Recovery Point Systems, Inc., Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   11,353 [3],[4],[11]   11,353 [3],[4],[11]   11,442 [6],[7],[12]          
Cost   11,262 [3],[4],[11]   11,262 [3],[4],[11]   11,330 [6],[7],[12]          
Investment, Identifier [Axis]: Recovery Point Systems, Inc., Technology, Partnership Equity                      
Schedule of Investments [Line Items]                      
Fair Value   90 [4],[13]   90 [4],[13]   103 [7],[14]          
Cost   187 [4],[13]   187 [4],[13]   187 [7],[14]          
Investment, Identifier [Axis]: Renovation Parent Holdings, LLC, Home Furnishings, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,250 [3],[4],[11]   4,250 [3],[4],[11]   4,167 [6],[7],[12]          
Cost   4,662 [3],[4],[11]   4,662 [3],[4],[11]   4,677 [6],[7],[12]          
Investment, Identifier [Axis]: Renovation Parent Holdings, LLC, Home Furnishings, Partnership Equity                      
Schedule of Investments [Line Items]                      
Fair Value   65 [4],[13]   65 [4],[13]   67 [7],[14]          
Cost   197 [4],[13]   197 [4],[13]   197 [7],[14]          
Investment, Identifier [Axis]: Resolute Investment Managers, Inc., Banking, Finance, Insurance & Real Estate, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   0 [4],[13],[17]   0 [4],[13],[17]   762 [6],[7],[12],[18]          
Cost   0 [4],[13],[17]   0 [4],[13],[17]   5,107 [6],[7],[12],[18]          
Investment, Identifier [Axis]: Resonetics, LLC, Health Care Equipment, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[12]           3,991          
Cost [6],[7],[12]           3,950          
Investment, Identifier [Axis]: Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[10],[11]   (52)   (52)              
Cost [3],[4],[10],[11]   (41)   (41)              
Investment, Identifier [Axis]: Rhondda Financing No. 1 DAC, Finance Companies, Structured - Junior Note                      
Schedule of Investments [Line Items]                      
Fair Value   28,944 [4],[8],[10]   28,944 [4],[8],[10]   29,586 [7],[9],[23]          
Cost   27,950 [4],[8],[10]   27,950 [4],[8],[10]   27,901 [7],[9],[23]          
Investment, Identifier [Axis]: Riedel Beheer B.V., Food & Beverage, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,011 [3],[4],[8],[19]   2,011 [3],[4],[8],[19]   2,078 [6],[7],[9],[20]          
Cost   2,260 [3],[4],[8],[19]   2,260 [3],[4],[8],[19]   2,256 [6],[7],[9],[20]          
Investment, Identifier [Axis]: Rocade Holdings LLC, Common LP Units                      
Schedule of Investments [Line Items]                      
Fair Value [1]   1,959   1,959   844 0        
Investment, Identifier [Axis]: Rocade Holdings LLC, Other Financial, Common LP Units                      
Schedule of Investments [Line Items]                      
Fair Value   1,959 [4],[13]   1,959 [4],[13]   844 [7],[14]          
Cost   0 [4],[13]   0 [4],[13]   0 [7],[14]          
Investment, Identifier [Axis]: Rocade Holdings LLC, Other Financial, Preferred LP Units                      
Schedule of Investments [Line Items]                      
Fair Value   77,298 [4],[10],[11]   77,298 [4],[10],[11]   73,113 [7],[12],[23]          
Cost   77,296 [4],[10],[11]   77,296 [4],[10],[11]   73,112 [7],[12],[23]          
Investment, Identifier [Axis]: Rocade Holdings LLC, Preferred LP Units                      
Schedule of Investments [Line Items]                      
Fair Value [1]   77,298   77,298   73,113 0        
Investment, Identifier [Axis]: Rock Labor LLC, Media: Diversified & Production, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   1,408 [4],[13]   1,408 [4],[13]   1,534 [7],[14]          
Cost   1,252 [4],[13]   1,252 [4],[13]   1,252 [7],[14]          
Investment, Identifier [Axis]: Rock Labor LLC, Media: Diversified & Production, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,505 [2],[3],[4]   6,505 [2],[3],[4]   6,422 [6],[7],[16]          
Cost   6,392 [2],[3],[4]   6,392 [2],[3],[4]   6,412 [6],[7],[16]          
Investment, Identifier [Axis]: Rock Labor LLC, Media: Diversified & Production, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (11) [2],[3],[4],[10]   (11) [2],[3],[4],[10]   (30) [6],[7],[16],[23]          
Cost   (29) [2],[3],[4],[10]   (29) [2],[3],[4],[10]   (31) [6],[7],[16],[23]          
Investment, Identifier [Axis]: Royal Buyer, LLC, Industrial Other, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   7,730 [3],[4],[10],[11]   7,730 [3],[4],[10],[11]   7,164 [6],[7],[12],[23]          
Cost   7,708 [3],[4],[10],[11]   7,708 [3],[4],[10],[11]   7,124 [6],[7],[12],[23]          
Investment, Identifier [Axis]: Royal Buyer, LLC, Industrial Other, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (21) [3],[4],[10],[11]   (21) [3],[4],[10],[11]   388 [6],[7],[12],[23]          
Cost   (26) [3],[4],[10],[11]   (26) [3],[4],[10],[11]   379 [6],[7],[12],[23]          
Investment, Identifier [Axis]: Ruffalo Noel Levitz, LLC, Media Services, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   8,660 [3],[4],[11]   8,660 [3],[4],[11]   9,241 [6],[7],[12]          
Cost   9,665 [3],[4],[11]   9,665 [3],[4],[11]   9,586 [6],[7],[12]          
Investment, Identifier [Axis]: Russell Investments US Institutional Holdco, Inc., Capital Markets, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[11]   504   504              
Cost [3],[4],[11]   486   486              
Investment, Identifier [Axis]: SBP Holdings LP, Industrial Other, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   13,773 [3],[4],[11]   13,773 [3],[4],[11]   13,442 [6],[7],[12],[23]          
Cost   13,394 [3],[4],[11]   13,394 [3],[4],[11]   13,268 [6],[7],[12],[23]          
Investment, Identifier [Axis]: SBP Holdings LP, Industrial Other, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   284 [3],[4],[10],[11]   284 [3],[4],[10],[11]   (19) [6],[7],[12],[23]          
Cost   254 [3],[4],[10],[11]   254 [3],[4],[10],[11]   (33) [6],[7],[12],[23]          
Investment, Identifier [Axis]: SISU ACQUISITIONCO., INC., Aerospace & Defense, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,889 [3],[4],[10],[15]   6,889 [3],[4],[10],[15]   6,463 [6],[7],[16],[23]          
Cost   7,257 [3],[4],[10],[15]   7,257 [3],[4],[10],[15]   6,773 [6],[7],[16],[23]          
Investment, Identifier [Axis]: SN BUYER, LLC, Health Care Services, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[12]           10,592          
Cost [6],[7],[12]           10,606          
Investment, Identifier [Axis]: SSCP Pegasus Midco Limited, Healthcare & Pharmaceuticals, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,041 [3],[4],[8],[10],[27]   4,041 [3],[4],[8],[10],[27]   3,416 [6],[7],[9],[23],[28]          
Cost   4,104 [3],[4],[8],[10],[27]   4,104 [3],[4],[8],[10],[27]   3,416 [6],[7],[9],[23],[28]          
Investment, Identifier [Axis]: SSCP Spring Bidco 3 Limited, Healthcare, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   945 [3],[4],[8],[30]   945 [3],[4],[8],[30]   947 [6],[7],[9],[31]          
Cost   933 [3],[4],[8],[30]   933 [3],[4],[8],[30]   932 [6],[7],[9],[31]          
Investment, Identifier [Axis]: SVI International LLC, Automotive, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[10],[15]   631   631              
Cost [3],[4],[10],[15]   630   630              
Investment, Identifier [Axis]: SVI International LLC, Automotive, LLC Units ($207,921 units)                      
Schedule of Investments [Line Items]                      
Fair Value [4],[13]   200   200              
Cost [4],[13]   208   208              
Investment, Identifier [Axis]: SVI International LLC, Automotive, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[10],[15]   (1)   (1)              
Cost [3],[4],[10],[15]   (1)   (1)              
Investment, Identifier [Axis]: Safety Products Holdings, LLC, Non-durable Consumer Goods, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   11,693 [3],[4],[11]   11,693 [3],[4],[11]   11,567 [6],[7],[12]          
Cost   11,585 [3],[4],[11]   11,585 [3],[4],[11]   11,684 [6],[7],[12]          
Investment, Identifier [Axis]: Safety Products Holdings, LLC, Non-durable Consumer Goods, Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value   488 [4],[13]   488 [4],[13]   468 [7],[14]          
Cost   380 [4],[13]   380 [4],[13]   380 [7],[14]          
Investment, Identifier [Axis]: Sanoptis S.A.R.L., Healthcare & Pharmaceuticals, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[8],[46]   1,759   1,759              
Cost [3],[4],[8],[46]   1,648   1,648              
Investment, Identifier [Axis]: Sanoptis S.A.R.L., Healthcare & Pharmaceuticals, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   1,894 [3],[4],[8],[10],[19]   1,894 [3],[4],[8],[10],[19]   2,585 [6],[7],[9],[20],[23]          
Cost   1,784 [3],[4],[8],[10],[19]   1,784 [3],[4],[8],[10],[19]   2,414 [6],[7],[9],[20],[23]          
Investment, Identifier [Axis]: Sanoptis S.A.R.L., Healthcare & Pharmaceuticals, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   494 [3],[4],[8],[19]   494 [3],[4],[8],[19]   3,357 [6],[7],[9],[47]          
Cost   482 [3],[4],[8],[19]   482 [3],[4],[8],[19]   3,064 [6],[7],[9],[47]          
Investment, Identifier [Axis]: Sanoptis S.A.R.L., Healthcare & Pharmaceuticals, First Lien Senior Secured Term Loan 3                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[8],[19]   1,487   1,487              
Cost [3],[4],[8],[19]   1,502   1,502              
Investment, Identifier [Axis]: Sanoptis S.A.R.L., Healthcare & Pharmaceuticals, First Lien Senior Secured Term Loan 4                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[8],[46]   236   236              
Cost [3],[4],[8],[46]   253   253              
Investment, Identifier [Axis]: Sanoptis S.A.R.L., Healthcare & Pharmaceuticals, First Lien Senior Secured Term Loan 5                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[8],[46]   544   544              
Cost [3],[4],[8],[46]   539   539              
Investment, Identifier [Axis]: Sanoptis S.A.R.L., Healthcare & Pharmaceuticals, First Lien Senior Secured Term Loan 6                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[8],[46]   47   47              
Cost [3],[4],[8],[46]   49   49              
Investment, Identifier [Axis]: Sanoptis S.A.R.L., Healthcare & Pharmaceuticals, First Lien Senior Secured Term Loan 7                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[8],[46]   285   285              
Cost [3],[4],[8],[46]   288   288              
Investment, Identifier [Axis]: Scaled Agile, Inc., Research & Consulting Services, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,639 [3],[4],[11]   1,639 [3],[4],[11]   1,759 [6],[7],[12]          
Cost   1,771 [3],[4],[11]   1,771 [3],[4],[11]   1,777 [6],[7],[12]          
Investment, Identifier [Axis]: Scaled Agile, Inc., Research & Consulting Services, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   128 [3],[4],[10],[11]   128 [3],[4],[10],[11]   48 [6],[7],[12],[23]          
Cost   153 [3],[4],[10],[11]   153 [3],[4],[10],[11]   52 [6],[7],[12],[23]          
Investment, Identifier [Axis]: Scout Bidco B.V., Diversified Manufacturing, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   3,362 [3],[4],[8],[19]   3,362 [3],[4],[8],[19]   3,480 [6],[7],[9],[20]          
Cost   3,356 [3],[4],[8],[19]   3,356 [3],[4],[8],[19]   3,350 [6],[7],[9],[20]          
Investment, Identifier [Axis]: Scout Bidco B.V., Diversified Manufacturing, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   435 [3],[4],[8],[11]   435 [3],[4],[8],[11]   437 [6],[7],[9],[12]          
Cost   443 [3],[4],[8],[11]   443 [3],[4],[8],[11]   443 [6],[7],[9],[12]          
Investment, Identifier [Axis]: Scout Bidco B.V., Diversified Manufacturing, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   395 [3],[4],[8],[10],[19]   395 [3],[4],[8],[10],[19]   410 [6],[7],[9],[20],[23]          
Cost   405 [3],[4],[8],[10],[19]   405 [3],[4],[8],[10],[19]   403 [6],[7],[9],[20],[23]          
Investment, Identifier [Axis]: Security Holdings B.V, Bridge Loan, 2023 Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [37]   3,751   3,751   3,866 0        
Investment, Identifier [Axis]: Security Holdings B.V, Bridge Loan, Controlled                      
Schedule of Investments [Line Items]                      
Fair Value [37]   6,488   6,488   6,328 6,020        
Investment, Identifier [Axis]: Security Holdings B.V, Common Stock Series A, Controlled                      
Schedule of Investments [Line Items]                      
Fair Value [37]   393   393   311 575        
Investment, Identifier [Axis]: Security Holdings B.V, Common Stock Series B, Controlled                      
Schedule of Investments [Line Items]                      
Fair Value [37]   36,739   36,739   29,080 53,728        
Investment, Identifier [Axis]: Security Holdings B.V, Senior Subordinated Term Loan, Controlled                      
Schedule of Investments [Line Items]                      
Fair Value [37]   11,039   11,039   10,867 10,534        
Investment, Identifier [Axis]: Security Holdings B.V, Senior Unsecured Term Loan, Controlled                      
Schedule of Investments [Line Items]                      
Fair Value [37]   2,268   2,268   2,236 2,015        
Investment, Identifier [Axis]: Security Holdings B.V., Electrical Engineering, Bridge Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,488 [4],[8],[48]   6,488 [4],[8],[48]   6,328 [7],[9],[49]          
Cost   6,488 [4],[8],[48]   6,488 [4],[8],[48]   6,328 [7],[9],[49]          
Investment, Identifier [Axis]: Security Holdings B.V., Electrical Engineering, Common Stock Series A                      
Schedule of Investments [Line Items]                      
Fair Value [7],[9],[14],[49]           311          
Cost [7],[9],[14],[49]           560          
Investment, Identifier [Axis]: Security Holdings B.V., Electrical Engineering, Common Stock Series A                      
Schedule of Investments [Line Items]                      
Fair Value [4],[8],[13],[48]   393   393              
Cost [4],[8],[13],[48]   560   560              
Investment, Identifier [Axis]: Security Holdings B.V., Electrical Engineering, Common Stock Series B                      
Schedule of Investments [Line Items]                      
Fair Value [7],[9],[14],[49]           29,080          
Cost [7],[9],[14],[49]           35,192          
Investment, Identifier [Axis]: Security Holdings B.V., Electrical Engineering, Common Stock Series B                      
Schedule of Investments [Line Items]                      
Fair Value [4],[8],[13],[48]   36,739   36,739              
Cost [4],[8],[13],[48]   35,192   35,192              
Investment, Identifier [Axis]: Security Holdings B.V., Electrical Engineering, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   3,751 [4],[8],[10],[48]   3,751 [4],[8],[10],[48]   3,866 [7],[9],[23],[49]          
Cost   3,818 [4],[8],[10],[48]   3,818 [4],[8],[10],[48]   3,818 [7],[9],[23],[49]          
Investment, Identifier [Axis]: Security Holdings B.V., Electrical Engineering, Senior Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   11,039 [4],[8],[48]   11,039 [4],[8],[48]   10,867 [7],[9],[49]          
Cost   11,039 [4],[8],[48]   11,039 [4],[8],[48]   10,867 [7],[9],[49]          
Investment, Identifier [Axis]: Security Holdings B.V., Electrical Engineering, Senior Unsecured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[8],[10],[48]   2,268   2,268              
Cost [4],[8],[10],[48]   2,416   2,416              
Investment, Identifier [Axis]: Security Holdings B.V.,Senior Unsecured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [7],[9],[23],[49]           2,236          
Cost [7],[9],[23],[49]           2,318          
Investment, Identifier [Axis]: Sereni Capital NV, Consumer Cyclical, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[8],[24]   481   481              
Cost [3],[4],[8],[24]   482   482              
Investment, Identifier [Axis]: Sereni Capital NV, Consumer Cyclical, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   458 [3],[4],[8],[24]   458 [3],[4],[8],[24]   2,522 [6],[7],[9],[29]          
Cost   443 [3],[4],[8],[24]   443 [3],[4],[8],[24]   2,480 [6],[7],[9],[29]          
Investment, Identifier [Axis]: Sereni Capital NV, Consumer Cyclical, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[8],[24]   1,574   1,574              
Cost [3],[4],[8],[24]   1,561   1,561              
Investment, Identifier [Axis]: Serta Simmons Bedding LLC, Home Furnishings, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   709 [4],[13]   709 [4],[13]   791 [7],[14]          
Cost   1,630 [4],[13]   1,630 [4],[13]   1,630 [7],[14]          
Investment, Identifier [Axis]: Shelf Bidco Ltd., Other Financial, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   2,952 [4],[8],[13]   2,952 [4],[8],[13]   1,548 [7],[9],[14]          
Cost   1,200 [4],[8],[13]   1,200 [4],[8],[13]   1,200 [7],[9],[14]          
Investment, Identifier [Axis]: Shelf Bidco Ltd., Other Financial, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   35,230 [3],[4],[8],[11]   35,230 [3],[4],[8],[11]   34,019 [6],[7],[9],[12]          
Cost   33,631 [3],[4],[8],[11]   33,631 [3],[4],[8],[11]   33,742 [6],[7],[9],[12]          
Investment, Identifier [Axis]: Sierra Senior Loan Strategy JV I LLC, Joint Venture, Member Interest                      
Schedule of Investments [Line Items]                      
Fair Value   41,538 [8],[17]   41,538 [8],[17]   39,172 [9],[18]          
Cost   48,441 [8],[17]   48,441 [8],[17]   48,441 [9],[18]          
Investment, Identifier [Axis]: Sierra Senior Loan Strategy JV I LLC, Member Interest                      
Schedule of Investments [Line Items]                      
Fair Value   41,538   41,538   39,172 37,950        
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, Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,778 [3],[4],[8],[10],[19]   1,778 [3],[4],[8],[10],[19]   1,822 [6],[7],[9],[23],[29]          
Cost   1,808 [3],[4],[8],[10],[19]   1,808 [3],[4],[8],[10],[19]   1,804 [6],[7],[9],[23],[29]          
Investment, Identifier [Axis]: SmartShift Group, Inc., Technology, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   409 [4],[13]   409 [4],[13]   288 [7],[14]          
Cost   275 [4],[13]   275 [4],[13]   275 [7],[14]          
Investment, Identifier [Axis]: SmartShift Group, Inc., Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   9,561 [3],[4],[10],[11]   9,561 [3],[4],[10],[11]   9,332 [6],[7],[12],[23]          
Cost   9,304 [3],[4],[10],[11]   9,304 [3],[4],[10],[11]   9,333 [6],[7],[12],[23]          
Investment, Identifier [Axis]: SmartShift Group, Inc., Technology, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[4],[10],[11]   0 [3],[4],[10],[11]   (38) [6],[7],[12],[23]          
Cost   (36) [3],[4],[10],[11]   (36) [3],[4],[10],[11]   (39) [6],[7],[12],[23]          
Investment, Identifier [Axis]: Smartling, Inc., Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   10,491 [3],[4],[15]   10,491 [3],[4],[15]   10,466 [6],[7],[16]          
Cost   10,364 [3],[4],[15]   10,364 [3],[4],[15]   10,427 [6],[7],[16]          
Investment, Identifier [Axis]: Smartling, Inc., Technology, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[4],[10],[15]   0 [3],[4],[10],[15]   (12) [6],[7],[16],[23]          
Cost   (13) [3],[4],[10],[15]   (13) [3],[4],[10],[15]   (15) [6],[7],[16],[23]          
Investment, Identifier [Axis]: Smile Brands Group Inc., Health Care Services, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   4,075 [3],[4],[11]   4,075 [3],[4],[11]   4,533 [6],[7],[12]          
Cost   4,476 [3],[4],[11]   4,476 [3],[4],[11]   5,101 [6],[7],[12]          
Investment, Identifier [Axis]: Smile Brands Group Inc., Health Care Services, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[11]   554   554              
Cost [3],[4],[11]   608   608              
Investment, Identifier [Axis]: Soho Square III Debtco II SARL, Diversified Capital Markets, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [7],[9]           8,175          
Cost [7],[9]           7,641          
Investment, Identifier [Axis]: Solo Buyer, L.P., Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   15,319 [3],[4],[11]   15,319 [3],[4],[11]   15,140 [6],[7],[12]          
Cost   15,089 [3],[4],[11]   15,089 [3],[4],[11]   15,182 [6],[7],[12]          
Investment, Identifier [Axis]: Solo Buyer, L.P., Technology, Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   516 [4],[13]   516 [4],[13]   382 [7],[14]          
Cost   516 [4],[13]   516 [4],[13]   516 [7],[14]          
Investment, Identifier [Axis]: Solo Buyer, L.P., Technology, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   387 [3],[4],[10],[11]   387 [3],[4],[10],[11]   615 [6],[7],[12],[23]          
Cost   362 [3],[4],[10],[11]   362 [3],[4],[10],[11]   624 [6],[7],[12],[23]          
Investment, Identifier [Axis]: Sound Point CLO XX, Ltd., Multi-Sector Holdings, Subordinated Structured Notes                      
Schedule of Investments [Line Items]                      
Fair Value   238 [8],[13],[17]   238 [8],[13],[17]   579 [9],[14],[18]          
Cost   1,389 [8],[13],[17]   1,389 [8],[13],[17]   1,806 [9],[14],[18]          
Investment, Identifier [Axis]: Sparus Holdings, LLC (f/k/a Sparus Holdings, Inc.), Other Utility, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,612 [3],[4],[10],[11]   1,612 [3],[4],[10],[11]   1,858 [6],[7],[12],[23]          
Cost   1,624 [3],[4],[10],[11]   1,624 [3],[4],[10],[11]   1,880 [6],[7],[12],[23]          
Investment, Identifier [Axis]: Sparus Holdings, LLC (f/k/a Sparus Holdings, Inc.), Other Utility, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[11]   415   415              
Cost [3],[4],[11]   420   420              
Investment, Identifier [Axis]: Sparus Holdings, LLC (f/k/a Sparus Holdings, Inc.), Other Utility, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (3) [3],[4],[10],[11]   (3) [3],[4],[10],[11]   62 [6],[7],[12],[23]          
Cost   (2) [3],[4],[10],[11]   (2) [3],[4],[10],[11]   64 [6],[7],[12],[23]          
Investment, Identifier [Axis]: Spatial Business Systems LLC, Electric, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   11,459 [3],[4],[10],[15]   11,459 [3],[4],[10],[15]   11,461 [6],[7],[16],[23]          
Cost   11,351 [3],[4],[10],[15]   11,351 [3],[4],[10],[15]   11,383 [6],[7],[16],[23]          
Investment, Identifier [Axis]: Spatial Business Systems LLC, Electric, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (15) [3],[4],[10],[15]   (15) [3],[4],[10],[15]   (21) [6],[7],[16],[23]          
Cost   (25) [3],[4],[10],[15]   (25) [3],[4],[10],[15]   (28) [6],[7],[16],[23]          
Investment, Identifier [Axis]: Springbrook Software (SBRK Intermediate, Inc.), Enterprise Software & Services, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[12]           13,719          
Cost [6],[7],[12]           13,605          
Investment, Identifier [Axis]: Springbrook Software (SBRK Intermediate, Inc.), Enterprise Software & Services, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[12]           2,791          
Cost [6],[7],[12]           2,747          
Investment, Identifier [Axis]: Starnmeer B.V., Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,500 [2],[3],[4],[8]   2,500 [2],[3],[4],[8]   2,490 [5],[6],[7],[9]          
Cost   2,479 [2],[3],[4],[8]   2,479 [2],[3],[4],[8]   2,475 [5],[6],[7],[9]          
Investment, Identifier [Axis]: Superjet Buyer, LLC, Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   17,062 [3],[4],[10],[11]   17,062 [3],[4],[10],[11]   12,825 [6],[7],[12]          
Cost   17,159 [3],[4],[10],[11]   17,159 [3],[4],[10],[11]   12,726 [6],[7],[12]          
Investment, Identifier [Axis]: Superjet Buyer, LLC, Technology, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (49) [3],[4],[10],[11]   (49) [3],[4],[10],[11]   444 [6],[7],[12],[23]          
Cost   (33) [3],[4],[10],[11]   (33) [3],[4],[10],[11]   432 [6],[7],[12],[23]          
Investment, Identifier [Axis]: Syniverse Holdings, Inc., Technology Distributors, Series A Preferred Equity                      
Schedule of Investments [Line Items]                      
Fair Value   9,318 [4]   9,318 [4]   8,788 [7]          
Cost   9,560 [4]   9,560 [4]   8,989 [7]          
Investment, Identifier [Axis]: Syntax Systems Ltd, Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[9],[16],[23]           1,997          
Cost [6],[7],[9],[16],[23]           1,983          
Investment, Identifier [Axis]: Syntax Systems Ltd, Technology, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[9],[16],[23]           620          
Cost [6],[7],[9],[16],[23]           614          
Investment, Identifier [Axis]: TA SL Cayman Aggregator Corp., Technology, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   77 [4],[13]   77 [4],[13]   73 [7],[14]          
Cost   50 [4],[13]   50 [4],[13]   50 [7],[14]          
Investment, Identifier [Axis]: TA SL Cayman Aggregator Corp., Technology, Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,569 [4]   2,569 [4]   2,395 [7]          
Cost   2,589 [4]   2,589 [4]   2,420 [7]          
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,066 [3],[4],[10],[11]   2,066 [3],[4],[10],[11]   810 [6],[7],[12],[23]          
Cost   2,031 [3],[4],[10],[11]   2,031 [3],[4],[10],[11]   806 [6],[7],[12],[23]          
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., Technology, First Lien Senior Secured Term Loan1                      
Schedule of Investments [Line Items]                      
Fair Value   623 [3],[4],[10],[11]   623 [3],[4],[10],[11]   584 [6],[7],[12]          
Cost   585 [3],[4],[10],[11]   585 [3],[4],[10],[11]   584 [6],[7],[12]          
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., Technology, Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   12 [4],[13]   12 [4],[13]   9 [7],[14]          
Cost   5 [4],[13]   5 [4],[13]   5 [7],[14]          
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., Technology, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[4],[10],[11]   0 [3],[4],[10],[11]   (10) [6],[7],[12],[23]          
Cost   (9) [3],[4],[10],[11]   (9) [3],[4],[10],[11]   (10) [6],[7],[12],[23]          
Investment, Identifier [Axis]: Tank Holding Corp, Metal & Glass Containers, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   7,830 [3],[4],[15]   7,830 [3],[4],[15]   7,915 [6],[7],[16]          
Cost   7,819 [3],[4],[15]   7,819 [3],[4],[15]   7,867 [6],[7],[16]          
Investment, Identifier [Axis]: Tank Holding Corp, Metal & Glass Containers, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   2,533 [3],[4],[10],[15]   2,533 [3],[4],[10],[15]   2,430 [6],[7],[16],[23]          
Cost   2,477 [3],[4],[10],[15]   2,477 [3],[4],[10],[15]   2,376 [6],[7],[16],[23]          
Investment, Identifier [Axis]: Tank Holding Corp, Metal & Glass Containers, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (12) [3],[4],[10],[15]   (12) [3],[4],[10],[15]   223 [6],[7],[16],[23]          
Cost   (12) [3],[4],[10],[15]   (12) [3],[4],[10],[15]   219 [6],[7],[16],[23]          
Investment, Identifier [Axis]: Tanqueray Bidco Limited, Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[8],[10],[27]   0   0              
Cost [3],[4],[8],[10],[27]   (12)   (12)              
Investment, Identifier [Axis]: Tanqueray Bidco Limited, Technology, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[8],[27]   1,715   1,715              
Cost [3],[4],[8],[27]   1,521   1,521              
Investment, Identifier [Axis]: Tanqueray Bidco Limited, Technology. First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[9],[23],[28]           1,730          
Cost [6],[7],[9],[23],[28]           1,502          
Investment, Identifier [Axis]: Team Air Distributing, LLC, Consumer Cyclical, Partnership Equity                      
Schedule of Investments [Line Items]                      
Fair Value   416 [4],[13]   416 [4],[13]   420 [7],[14]          
Cost   400 [4],[13]   400 [4],[13]   400 [7],[14]          
Investment, Identifier [Axis]: Team Air Distributing, LLC, Consumer Cyclical, Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   593 [4]   593 [4]   590 [7]          
Cost   589 [4]   589 [4]   589 [7]          
Investment, Identifier [Axis]: Team Car Care, LLC, Automotive, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[12],[18]           10,382          
Cost [6],[7],[12],[18]           10,455          
Investment, Identifier [Axis]: Team Services Group, Services: Consumer, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [5],[6],[18]           9,646          
Cost [5],[6],[18]           9,737          
Investment, Identifier [Axis]: Team Services Group, Services: Consumer, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [5],[6],[7],[18]           4,694          
Cost [5],[6],[7],[18]           4,975          
Investment, Identifier [Axis]: Technology Service Stream BidCo Pty Ltd, Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[8],[10],[21]   (7)   (7)              
Cost [3],[4],[8],[10],[21]   (7)   (7)              
Investment, Identifier [Axis]: Technology Service Stream BidCo Pty Ltd, Technology, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[8],[10],[21]   732   732              
Cost [3],[4],[8],[10],[21]   730   730              
Investment, Identifier [Axis]: Techone B.V., Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,709 [3],[4],[8],[19]   3,709 [3],[4],[8],[19]   3,814 [6],[7],[9],[20]          
Cost   3,809 [3],[4],[8],[19]   3,809 [3],[4],[8],[19]   3,801 [6],[7],[9],[20]          
Investment, Identifier [Axis]: Techone B.V., Technology, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (8) [3],[4],[8],[10],[19]   (8) [3],[4],[8],[10],[19]   201 [6],[7],[9],[20],[23]          
Cost   (25) [3],[4],[8],[10],[19]   (25) [3],[4],[8],[10],[19]   190 [6],[7],[9],[20],[23]          
Investment, Identifier [Axis]: Tencarva Machinery Company, LLC, Capital Equipment, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   8,344 [3],[4],[11]   8,344 [3],[4],[11]   6,226 [6],[7],[12]          
Cost   8,402 [3],[4],[11]   8,402 [3],[4],[11]   6,185 [6],[7],[12]          
Investment, Identifier [Axis]: Tencarva Machinery Company, LLC, Capital Equipment, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (29) [3],[4],[10],[11]   (29) [3],[4],[10],[11]   (6) [6],[7],[12],[23]          
Cost   (18) [3],[4],[10],[11]   (18) [3],[4],[10],[11]   (13) [6],[7],[12],[23]          
Investment, Identifier [Axis]: Terrybear, Inc., Consumer Products, Partnership Equity                      
Schedule of Investments [Line Items]                      
Fair Value   139 [4],[13]   139 [4],[13]   115 [7],[14]          
Cost   239 [4],[13]   239 [4],[13]   239 [7],[14]          
Investment, Identifier [Axis]: Terrybear, Inc., Consumer Products, Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   262 [4]   262 [4]   260 [7]          
Cost   276 [4]   276 [4]   270 [7]          
Investment, Identifier [Axis]: The Caprock Group, Inc. (aka TA/TCG Holdings, LLC), Brokerage, Asset Managers & Exchanges, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[10],[11]   0   0              
Cost [3],[4],[10],[11]   (8)   (8)              
Investment, Identifier [Axis]: The Caprock Group, Inc. (aka TA/TCG Holdings, LLC), Brokerage, Asset Managers & Exchanges, Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [2],[3],[4]   3,715   3,715              
Cost [2],[3],[4]   3,681   3,681              
Investment, Identifier [Axis]: The Caprock Group, Inc. (aka TA/TCG Holdings, LLC), Brokerage, Asset Managers & Exchanges, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,825 [3],[4],[11]   1,825 [3],[4],[11]   830 [6],[7],[12],[23]          
Cost   1,804 [3],[4],[11]   1,804 [3],[4],[11]   796 [6],[7],[12],[23]          
Investment, Identifier [Axis]: The Caprock Group, Inc. (aka TA/TCG Holdings, LLC), Brokerage, Asset Managers & Exchanges, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[11]   826   826              
Cost [3],[4],[11]   817   817              
Investment, Identifier [Axis]: The Caprock Group, Inc. (aka TA/TCG Holdings, LLC), Brokerage, Asset Managers & Exchanges, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[12],[23]           0          
Cost [6],[7],[12],[23]           (10)          
Investment, Identifier [Axis]: The Caprock Group, Inc. (aka TA/TCG Holdings, LLC), Brokerage, Asset Managers & Exchanges, Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [5],[6],[7]           3,578          
Cost [5],[6],[7]           3,548          
Investment, Identifier [Axis]: The Cleaver-Brooks Company, Inc., Capital Equipment, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[16]           12,680          
Cost [6],[7],[16]           12,475          
Investment, Identifier [Axis]: The Cleaver-Brooks Company, Inc., Capital Equipment, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[16],[23]           0          
Cost [6],[7],[16],[23]           (49)          
Investment, Identifier [Axis]: The Cleaver-Brooks Company, Inc., Capital Equipment, Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [7]           4,882          
Cost [7]           4,863          
Investment, Identifier [Axis]: The Hilb Group, LLC, Insurance Brokerage, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   11,394 [3],[4],[10],[15]   11,394 [3],[4],[10],[15]   11,317 [6],[7],[16],[23]          
Cost   11,315 [3],[4],[10],[15]   11,315 [3],[4],[10],[15]   11,259 [6],[7],[16],[23]          
Investment, Identifier [Axis]: The Octave Music Group, Inc., Media: Diversified & Production, Partnership Equity                      
Schedule of Investments [Line Items]                      
Fair Value   2,247 [4]   2,247 [4]   2,152 [7],[14]          
Cost   677 [4]   677 [4]   677 [7],[14]          
Investment, Identifier [Axis]: The Octave Music Group, Inc., Media: Diversified & Production, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,611 [3],[11]   3,611 [3],[11]   4,240 [6],[7],[12]          
Cost   3,611 [3],[11]   3,611 [3],[11]   4,204 [6],[7],[12]          
Investment, Identifier [Axis]: Thompson Rivers LLC                      
Schedule of Investments [Line Items]                      
Total contributed capital                     $ 75,000
Investment, Identifier [Axis]: Thompson Rivers LLC, Investment Funds & Vehicles                      
Schedule of Investments [Line Items]                      
Fair Value [13]   9,570   9,570              
Cost [13]   25,293   25,293              
Investment, Identifier [Axis]: Thompson Rivers LLC, Investment Funds & Vehicles, Member Interest                      
Schedule of Investments [Line Items]                      
Fair Value [14]           13,365          
Cost [14]           28,888          
Investment, Identifier [Axis]: Thompson Rivers LLC, Member Interest                      
Schedule of Investments [Line Items]                      
Fair Value   9,570   9,570   13,365 30,339        
Investment, Identifier [Axis]: Thompsonn Rivers LLC                      
Schedule of Investments [Line Items]                      
Total contributed capital   79,411   79,411   79,411          
Investment, Identifier [Axis]: Total Safety U.S. Inc., Diversified Support Services, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [6],[16]           5,433          
Cost [6],[16]           5,654          
Investment, Identifier [Axis]: Total Safety U.S. Inc., Diversified Support Services, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[16]           3,717          
Cost [6],[7],[16]           3,717          
Investment, Identifier [Axis]: Trader Corporation, Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,454 [3],[4],[8],[53]   4,454 [3],[4],[8],[53]   4,617 [6],[7],[9],[54]          
Cost   4,412 [3],[4],[8],[53]   4,412 [3],[4],[8],[53]   4,428 [6],[7],[9],[54]          
Investment, Identifier [Axis]: Trader Corporation, Technology, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (3) [3],[4],[8],[10],[53]   (3) [3],[4],[8],[10],[53]   (6) [6],[7],[9],[23],[54]          
Cost   (6) [3],[4],[8],[10],[53]   (6) [3],[4],[8],[10],[53]   (7) [6],[7],[9],[23],[54]          
Investment, Identifier [Axis]: Transit Technologies LLC, Software, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   9,250 [3],[4],[11]   9,250 [3],[4],[11]   6,035 [6],[7],[12]          
Cost   9,209 [3],[4],[11]   9,209 [3],[4],[11]   6,009 [6],[7],[12]          
Investment, Identifier [Axis]: Transportation Insight, LLC, Air Freight & Logistics, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   9,452 [2],[3],[4]   9,452 [2],[3],[4]   10,335 [5],[6],[7]          
Cost   11,045 [2],[3],[4]   11,045 [2],[3],[4]   11,093 [5],[6],[7]          
Investment, Identifier [Axis]: Trident Maritime Systems, Inc., Aerospace & Defense, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   15,002 [3],[4],[11]   15,002 [3],[4],[11]   15,409 [6],[7],[12]          
Cost   15,609 [3],[4],[11]   15,609 [3],[4],[11]   15,619 [6],[7],[12]          
Investment, Identifier [Axis]: Trintech, Inc., Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,769 [3],[4],[15]   6,769 [3],[4],[15]   6,790 [6],[7],[16]          
Cost   6,745 [3],[4],[15]   6,745 [3],[4],[15]   6,766 [6],[7],[16]          
Investment, Identifier [Axis]: Trintech, Inc., Technology, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   141 [3],[4],[10],[15]   141 [3],[4],[10],[15]   140 [6],[7],[16],[23]          
Cost   139 [3],[4],[10],[15]   139 [3],[4],[10],[15]   138 [6],[7],[16],[23]          
Investment, Identifier [Axis]: Truck-Lite Co., LLC, Automotive Parts & Equipment, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[12]           18,967          
Cost [6],[7],[12]           18,917          
Investment, Identifier [Axis]: True Religion Apparel, Inc., Retail, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   0 [4],[13],[17]   0 [4],[13],[17]   0 [7],[14],[18]          
Cost   0 [4],[13],[17]   0 [4],[13],[17]   0 [7],[14],[18]          
Investment, Identifier [Axis]: True Religion Apparel, Inc., Retail, Preferred Unit                      
Schedule of Investments [Line Items]                      
Fair Value   0 [4],[13],[17]   0 [4],[13],[17]   0 [7],[14],[18]          
Cost   0 [4],[13],[17]   0 [4],[13],[17]   0 [7],[14],[18]          
Investment, Identifier [Axis]: Trystar, LLC, Power Distribution Solutions, Class A LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value   954 [4]   954 [4]   1,323 [7]          
Cost   481 [4]   481 [4]   481 [7]          
Investment, Identifier [Axis]: Trystar, LLC, Power Distribution Solutions, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   15,930 [3],[4],[11]   15,930 [3],[4],[11]   6,739 [6],[7],[12]          
Cost   15,978 [3],[4],[11]   15,978 [3],[4],[11]   6,723 [6],[7],[12]          
Investment, Identifier [Axis]: Turbo Buyer, Inc., Finance Companies, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   7,921 [3],[4],[11]   7,921 [3],[4],[11]   7,939 [6],[7],[12],[23]          
Cost   8,162 [3],[4],[11]   8,162 [3],[4],[11]   8,149 [6],[7],[12],[23]          
Investment, Identifier [Axis]: Turnberry Solutions, Inc., Consumer Cyclical, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,899 [3],[4],[11]   4,899 [3],[4],[11]   4,898 [6],[7],[12]          
Cost   4,854 [3],[4],[11]   4,854 [3],[4],[11]   4,881 [6],[7],[12]          
Investment, Identifier [Axis]: UBC Ledgers Holding AB, Financial Other, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,466 [3],[4],[8],[10],[35]   1,466 [3],[4],[8],[10],[35]   1,529 [6],[7],[9],[23],[36]          
Cost   1,470 [3],[4],[8],[10],[35]   1,470 [3],[4],[8],[10],[35]   1,467 [6],[7],[9],[23],[36]          
Investment, Identifier [Axis]: UBC Ledgers Holding AB, Financial Other, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   (5) [3],[4],[8],[10],[35]   (5) [3],[4],[8],[10],[35]   0 [6],[7],[9],[23],[36]          
Cost   0 [3],[4],[8],[10],[35]   0 [3],[4],[8],[10],[35]   0 [6],[7],[9],[23],[36]          
Investment, Identifier [Axis]: UKFast Leaders Limited, Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   11,026 [3],[4],[8],[27]   11,026 [3],[4],[8],[27]   10,762 [6],[7],[9],[28]          
Cost   11,833 [3],[4],[8],[27]   11,833 [3],[4],[8],[27]   11,809 [6],[7],[9],[28]          
Investment, Identifier [Axis]: USLS Acquisition, Inc. (f/k/a US Legal Support, Inc.), Legal Services, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   10,063 [3],[4],[10],[15]   10,063 [3],[4],[10],[15]   9,883 [6],[7],[16],[23]          
Cost   10,191 [3],[4],[10],[15]   10,191 [3],[4],[10],[15]   10,124 [6],[7],[16],[23]          
Investment, Identifier [Axis]: Union Bidco Limited, Healthcare, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   920 [3],[4],[8],[10],[27]   920 [3],[4],[8],[10],[27]   877 [6],[7],[9],[23],[28]          
Cost   874 [3],[4],[8],[10],[27]   874 [3],[4],[8],[10],[27]   873 [6],[7],[9],[23],[28]          
Investment, Identifier [Axis]: United Therapy Holding III GmbH, Healthcare, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,345 [3],[4],[8],[10],[24]   1,345 [3],[4],[8],[10],[24]   1,312 [6],[7],[9],[23],[29]          
Cost   1,709 [3],[4],[8],[10],[24]   1,709 [3],[4],[8],[10],[24]   1,705 [6],[7],[9],[23],[29]          
Investment, Identifier [Axis]: Unither (Uniholding), Pharma-ceuticals, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,989 [3],[4],[8],[10],[19]   1,989 [3],[4],[8],[10],[19]   2,037 [6],[7],[9],[20],[23]          
Cost   1,961 [3],[4],[8],[10],[19]   1,961 [3],[4],[8],[10],[19]   1,956 [6],[7],[9],[20],[23]          
Investment, Identifier [Axis]: Utac Ceram, Business Services, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[8],[19]   1,531   1,531              
Cost [3],[4],[8],[19]   1,750   1,750              
Investment, Identifier [Axis]: Utac Ceram, Business Services, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   924 [3],[4],[8],[11]   924 [3],[4],[8],[11]   1,559 [6],[7],[9],[20]          
Cost   988 [3],[4],[8],[11]   988 [3],[4],[8],[11]   1,718 [6],[7],[9],[20]          
Investment, Identifier [Axis]: Utac Ceram, Business Services, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   2,426 [3],[4],[8],[11]   2,426 [3],[4],[8],[11]   3,353 [6],[7],[9],[12]          
Cost   2,555 [3],[4],[8],[11]   2,555 [3],[4],[8],[11]   3,520 [6],[7],[9],[12]          
Investment, Identifier [Axis]: VOYA CLO 2015-2, LTD., Multi-Sector Holdings, Subordinated Structured Notes                      
Schedule of Investments [Line Items]                      
Fair Value   22 [8],[13],[17]   22 [8],[13],[17]   91 [9],[14],[18]          
Cost   2,496 [8],[13],[17]   2,496 [8],[13],[17]   2,541 [9],[14],[18]          
Investment, Identifier [Axis]: VOYA CLO 2016-2, LTD., Multi-Sector Holdings, Subordinated Structured Notes                      
Schedule of Investments [Line Items]                      
Fair Value   1,090 [8],[13],[17]   1,090 [8],[13],[17]   943 [9],[14],[18]          
Cost   2,561 [8],[13],[17]   2,561 [8],[13],[17]   2,717 [9],[14],[18]          
Investment, Identifier [Axis]: Validity, Inc., IT Consulting & Other Services, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,783 [3],[4],[15]   4,783 [3],[4],[15]   4,783 [6],[7],[16]          
Cost   4,756 [3],[4],[15]   4,756 [3],[4],[15]   4,741 [6],[7],[16]          
Investment, Identifier [Axis]: Velocity Pooling Vehicle, LLC, Automotive, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   3 [4],[13],[17]   3 [4],[13],[17]   2 [7],[14],[18]          
Cost   72 [4],[13],[17]   72 [4],[13],[17]   60 [7],[14],[18]          
Investment, Identifier [Axis]: Velocity Pooling Vehicle, LLC, Automotive, Warrants                      
Schedule of Investments [Line Items]                      
Fair Value   2 [4],[13],[17]   2 [4],[13],[17]   3 [7],[14],[18]          
Cost   60 [4],[13],[17]   60 [4],[13],[17]   72 [7],[14],[18]          
Investment, Identifier [Axis]: Victoria Bidco Limited, Industrial Machinery, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   3,523 [3],[4],[8],[27]   3,523 [3],[4],[8],[27]   3,573 [6],[7],[9],[28]          
Cost   4,073 [3],[4],[8],[27]   4,073 [3],[4],[8],[27]   4,066 [6],[7],[9],[28]          
Investment, Identifier [Axis]: Vision Solutions Inc., Business Equipment & Services, Second Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,216 [3],[11],[17]   6,216 [3],[11],[17]   5,908 [6],[12],[18]          
Cost   6,497 [3],[11],[17]   6,497 [3],[11],[17]   6,497 [6],[12],[18]          
Investment, Identifier [Axis]: VistaJet Pass Through Trust 2021-1B, Airlines, Structured Secured Note - Class B                      
Schedule of Investments [Line Items]                      
Fair Value   3,516 [4]   3,516 [4]   3,262 [7]          
Cost   3,571 [4]   3,571 [4]   3,929 [7]          
Investment, Identifier [Axis]: Vital Buyer, LLC, Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   7,408 [3],[4],[11]   7,408 [3],[4],[11]   7,526 [6],[7],[12]          
Cost   7,316 [3],[4],[11]   7,316 [3],[4],[11]   7,423 [6],[7],[12]          
Investment, Identifier [Axis]: Vital Buyer, LLC, Technology, Partnership Units                      
Schedule of Investments [Line Items]                      
Fair Value   304 [4]   304 [4]   434 [7],[14]          
Cost   164 [4]   164 [4]   164 [7],[14]          
Investment, Identifier [Axis]: W2O Holdings, Inc., Healthcare Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   5,756 [4],[11]   5,756 [4],[11]   5,785 [7],[12]          
Cost   5,851 [4],[11]   5,851 [4],[11]   5,894 [7],[12]          
Investment, Identifier [Axis]: W2O Holdings, Inc., Healthcare Technology, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[11]   2,700   2,700              
Cost [3],[4],[11]   2,701   2,701              
Investment, Identifier [Axis]: WEST-NR ACQUISITIONCO, LLC, Insurance, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[10],[11]   2,482   2,482              
Cost [3],[4],[10],[11]   2,440   2,440              
Investment, Identifier [Axis]: WEST-NR ACQUISITIONCO, LLC, Insurance, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[11]   0   0              
Cost [3],[4],[11]   (40)   (40)              
Investment, Identifier [Axis]: WEST-NR ACQUISITIONCO, LLC,Insurance, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[12],[23]           2,403          
Cost [6],[7],[12],[23]           2,402          
Investment, Identifier [Axis]: WWEC Holdings III Corp, Capital Goods, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   2,148 [3],[4],[11]   2,148 [3],[4],[11]   12,346 [6],[7],[12]          
Cost   2,188 [3],[4],[11]   2,188 [3],[4],[11]   12,104 [6],[7],[12]          
Investment, Identifier [Axis]: WWEC Holdings III Corp, Capital Goods, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[11]   9,876   9,876              
Cost [3],[4],[11]   9,883   9,883              
Investment, Identifier [Axis]: WWEC Holdings III Corp, Capital Goods, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[12],[23]           466          
Cost [6],[7],[12],[23]           419          
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, Investment Funds & Vehicles                      
Schedule of Investments [Line Items]                      
Fair Value [8]   12,691   12,691              
Cost [8]   24,670   24,670              
Investment, Identifier [Axis]: Waccamaw River LLC, Investment Funds & Vehicles, Member Interest                      
Schedule of Investments [Line Items]                      
Fair Value [9],[14]           15,470          
Cost [9],[14]           25,000          
Investment, Identifier [Axis]: Waccamaw River LLC, Member Interest                      
Schedule of Investments [Line Items]                      
Fair Value   12,691   12,691   15,470 $ 20,212        
Investment, Identifier [Axis]: Watermill-QMC Midco, Inc., Automotive, Equity                      
Schedule of Investments [Line Items]                      
Fair Value   0 [4],[13],[17]   0 [4],[13],[17]   0 [7],[14],[18]          
Cost   0 [4],[13],[17]   0 [4],[13],[17]   0 [7],[14],[18]          
Investment, Identifier [Axis]: Wheels Up Experience Inc, Transportation Services, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   8,744 [4]   8,744 [4]   9,884 [7]          
Cost   9,043 [4]   9,043 [4]   10,366 [7]          
Investment, Identifier [Axis]: Whitcraft Holdings, Inc., Aerospace & Defense, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   593 [3],[4],[10],[11]   593 [3],[4],[10],[11]   8,345 [6],[7],[12]          
Cost   593 [3],[4],[10],[11]   593 [3],[4],[10],[11]   8,304 [6],[7],[12]          
Investment, Identifier [Axis]: Whitcraft Holdings, Inc., Aerospace & Defense, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[10],[11]   8,590   8,590              
Cost [3],[4],[10],[11]   8,305   8,305              
Investment, Identifier [Axis]: Whitcraft Holdings, Inc., Aerospace & Defense, LP Units                      
Schedule of Investments [Line Items]                      
Fair Value [7],[14]           804          
Cost [7],[14]           631          
Investment, Identifier [Axis]: Whitcraft Holdings, Inc., Aerospace & Defense, LP Units                      
Schedule of Investments [Line Items]                      
Fair Value [4],[13]   821   821              
Cost [4],[13]   631   631              
Investment, Identifier [Axis]: Whitcraft Holdings, Inc., Aerospace & Defense, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   1,144 [3],[4],[10],[15]   1,144 [3],[4],[10],[15]   67 [6],[7],[12],[23]          
Cost   1,086 [3],[4],[10],[15]   1,086 [3],[4],[10],[15]   61 [6],[7],[12],[23]          
Investment, Identifier [Axis]: White Bidco Limited, Technology, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   1,701 [3],[4],[8],[10],[11]   1,701 [3],[4],[8],[10],[11]   1,687 [6],[7],[9],[12],[23]          
Cost   1,692 [3],[4],[8],[10],[11]   1,692 [3],[4],[8],[10],[11]   1,688 [6],[7],[9],[12],[23]          
Investment, Identifier [Axis]: Wok Holdings Inc., Retail, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   47 [3],[11],[17]   47 [3],[11],[17]   47 [6],[12],[18]          
Cost   47 [3],[11],[17]   47 [3],[11],[17]   47 [6],[12],[18]          
Investment, Identifier [Axis]: Woodland Foods, LLC, Food & Beverage, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value [7],[14]           1,012          
Cost [7],[14]           1,663          
Investment, Identifier [Axis]: Woodland Foods, LLC, Food & Beverage, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value [4],[13]   1,029   1,029              
Cost [4],[13]   1,663   1,663              
Investment, Identifier [Axis]: Woodland Foods, LLC, Food & Beverage, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   6,082 [3],[4],[11]   6,082 [3],[4],[11]   4,946 [6],[7],[12]          
Cost   6,124 [3],[4],[11]   6,124 [3],[4],[11]   5,312 [6],[7],[12]          
Investment, Identifier [Axis]: Woodland Foods, LLC, Food & Beverage, Preferred Stock                      
Schedule of Investments [Line Items]                      
Fair Value [4]   386   386              
Cost [4]   387   387              
Investment, Identifier [Axis]: Woodland Foods, LLC, Food & Beverage, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   1,132 [3],[4],[10],[11]   1,132 [3],[4],[10],[11]   1,378 [6],[7],[12],[23]          
Cost   1,149 [3],[4],[10],[11]   1,149 [3],[4],[10],[11]   1,531 [6],[7],[12],[23]          
Investment, Identifier [Axis]: World 50, Inc., Professional Services, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value   18,634 [3],[4],[11]   18,634 [3],[4],[11]   2,414 [6],[7],[12]          
Cost   18,612 [3],[4],[11]   18,612 [3],[4],[11]   2,398 [6],[7],[12]          
Investment, Identifier [Axis]: World 50, Inc., Professional Services, First Lien Senior Secured Term Loan 2                      
Schedule of Investments [Line Items]                      
Fair Value   (18) [3],[4],[11]   (18) [3],[4],[11]   8,760 [6],[7],[12]          
Cost   (19) [3],[4],[11]   (19) [3],[4],[11]   8,713 [6],[7],[12]          
Investment, Identifier [Axis]: Xeinadin Bidco Limited, Financial Other, Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [4],[8]   3,433   3,433              
Cost [4],[8]   3,387   3,387              
Investment, Identifier [Axis]: Xeinadin Bidco Limited, Financial Other, Common Stock                      
Schedule of Investments [Line Items]                      
Fair Value   577 [4],[8],[13]   577 [4],[8],[13]   582 [7],[9],[14]          
Cost   565 [4],[8],[13]   565 [4],[8],[13]   565 [7],[9],[14]          
Investment, Identifier [Axis]: Xeinadin Bidco Limited, Financial Other, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   293 [3],[4],[8],[27]   293 [3],[4],[8],[27]   6,448 [6],[7],[9],[23],[28]          
Cost   305 [3],[4],[8],[27]   305 [3],[4],[8],[27]   6,240 [6],[7],[9],[23],[28]          
Investment, Identifier [Axis]: Xeinadin Bidco Limited, Financial Other, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[8],[10],[27]   7,113   7,113              
Cost [3],[4],[8],[10],[27]   7,069   7,069              
Investment, Identifier [Axis]: Xeinadin Bidco Limited, Financial Other, Subordinated Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value [7],[9]           3,241          
Cost [7],[9]           3,118          
Investment, Identifier [Axis]: ZB Holdco LLC, Food & Beverage, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value [4]   220   220              
Cost [4]   153   153              
Investment, Identifier [Axis]: ZB Holdco LLC, Food & Beverage, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[10],[11]   255   255              
Cost [3],[4],[10],[11]   260   260              
Investment, Identifier [Axis]: ZB Holdco LLC, Food & Beverage, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   8,636 [3],[4],[10],[11]   8,636 [3],[4],[10],[11]   6,271 [6],[7],[12],[23]          
Cost   8,672 [3],[4],[10],[11]   8,672 [3],[4],[10],[11]   6,189 [6],[7],[12],[23]          
Investment, Identifier [Axis]: ZB Holdco LLC, Food & Beverage, LLC Units                      
Schedule of Investments [Line Items]                      
Fair Value [7]           172          
Cost [7]           153          
Investment, Identifier [Axis]: ZB Holdco LLC, Food & Beverage, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value [6],[7],[12],[23]           (6)          
Cost [6],[7],[12],[23]           (12)          
Investment, Identifier [Axis]: Zeppelin Bidco Limited, Services: Business, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   4,760 [3],[4],[8],[27]   4,760 [3],[4],[8],[27]   5,718 [6],[7],[9],[23],[28]          
Cost   5,561 [3],[4],[8],[27]   5,561 [3],[4],[8],[27]   6,196 [6],[7],[9],[23],[28]          
Investment, Identifier [Axis]: Zeppelin Bidco Limited, Services: Business, First Lien Senior Secured Term Loan 1                      
Schedule of Investments [Line Items]                      
Fair Value [3],[4],[8],[27]   604   604              
Cost [3],[4],[8],[27]   682   682              
Investment, Identifier [Axis]: eShipping, LLC, Transportation Services, First Lien Senior Secured Term Loan                      
Schedule of Investments [Line Items]                      
Fair Value   3,469 [3],[4],[15]   3,469 [3],[4],[15]   3,473 [6],[7],[16]          
Cost   3,427 [3],[4],[15]   3,427 [3],[4],[15]   3,426 [6],[7],[16]          
Investment, Identifier [Axis]: eShipping, LLC, Transportation Services, Revolver                      
Schedule of Investments [Line Items]                      
Fair Value   0 [3],[4],[10],[15]   0 [3],[4],[10],[15]   0 [6],[7],[16],[23]          
Cost   (17) [3],[4],[10],[15]   (17) [3],[4],[10],[15]   (19) [6],[7],[16],[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   500 1,500 1,000 2,900            
Total dividend income   400 $ 1,300 900 $ 2,500            
Fair Value   40,703   40,703   79,599          
Cost   $ 42,537   $ 42,537   $ 85,304          
Weighted average yield   10.00%   10.00%   10.00%          
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                    
Sierra JV | Revolving Credit Facility | Line of Credit                      
Schedule of Investments [Line Items]                      
Borrowings under credit facility           $ 45,000          
[1]
(d)    The fair value of the investment was determined using significant unobservable inputs.
[2] The interest rate on these loans is subject to 6 Month SOFR, which as of June 30, 2024 was 5.25471%.
[3] Debt investment includes interest rate floor feature.
[4] The fair value of the investment was determined using significant unobservable inputs.
[5] The interest rate on these loans is subject to 6 Month SOFR, which as of December 31, 2023 was 5.15772%.
[6] Debt investment includes interest rate floor feature.
[7] The fair value of the investment was determined using significant unobservable inputs.
[8] Investment is not a qualifying investment as defined under Section 55(a) of the 1940 Act. Non-qualifying assets represent 28.2% of total investments at fair value as of June 30, 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).
[9] Investment is not a qualifying investment as defined under Section 55(a) of the 1940 Act. Non-qualifying assets represent 28.8% of total investments at fair value as of December 31, 2023. 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).
[10] Position or portion thereof is an unfunded loan or equity commitment.
[11] The interest rate on these loans is subject to 3 Month SOFR, which as of June 30, 2024 was 5.32460%.
[12] The interest rate on these loans is subject to 3 Month SOFR, which as of December 31, 2023 was 5.33140%.
[13] Investment is non-income producing.
[14] Investment is non-income producing.
[15] The interest rate on these loans is subject to 1 Month SOFR, which as of June 30, 2024 was 5.33717%.
[16] The interest rate on these loans is subject to 1 Month SOFR, which as of December 31, 2023 was 5.35472%.
[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 June 30, 2024 was 3.71100%.
[20] The interest rate on these loans is subject to 3 Month EURIBOR, which as of December 31, 2023 was 3.90900%.
[21] The interest rate on these loans is subject to 6 Month BBSY, which as of June 30, 2024 was 4.73600%.
[22] The interest rate on these loans is subject to 1 Month BBSY, which as of December 31, 2023 was 4.31000%.
[23] Position or portion thereof is an unfunded loan or equity commitment.
[24] The interest rate on these loans is subject to 6 Month EURIBOR, which as of June 30, 2024 was 3.68200%.
[25] Non-accrual investment.
[26] Non-accrual investment.
[27] The interest rate on these loans is subject to 3 Month SONIA, which as of June 30, 2024 was 5.12780%.
[28] The interest rate on these loans is subject to 3 Month SONIA, which as of December 31, 2023 was 5.20530%.
[29] The interest rate on these loans is subject to 6 Month EURIBOR, which as of December 31, 2023 was 3.86100%.
[30] The interest rate on these loans is subject to 6 Month SONIA, which as of June 30, 2024 was 5.06220%.
[31] The interest rate on these loans is subject to 6 Month SONIA, which as of December 31, 2023 was 5.13220%.
[32] The interest rate on these loans is subject to 3 Month BBSY, which as of June 30, 2024 was 4.44530%.
[33] The interest rate on these loans is subject to 6 Month BBSY, which as of December 31, 2023 was 4.44500%.
[34] The interest rate on these loans is subject to 1 Month EURIBOR, which as of June 30, 2024 was 3.63200%.
[35] The interest rate on these loans is subject to 3 Month STIBOR, which as of June 30, 2024 was 3.70700%.
[36] The interest rate on these loans is subject to 3 Month STIBOR, which as of December 31, 2023 was 4.05200%.
[37]
(d)    The fair value of the investment was determined using significant unobservable inputs.
[38] The interest rate on these loans is subject to 1 Month SONIA, which as of June 30, 2024 was 5.21250%.
[39] The interest rate on these loans is subject to 1 Month SONIA, which as of December 31, 2023 was 5.19920%.
[40] The interest rate on these loans is subject to 3 Month CORRA, which as of June 30, 2024 was 4.67875%.
[41] The interest rate on these loans is subject to 3 Month CDOR, which as of December 31, 2023 was 5.44750%.
[42] The interest rate on these loans is subject to 1 Month EURIBOR, which as of December 31, 2023 was 3.84500%.
[43] The interest rate on these loans is subject to 3 Month BBSY, which as of December 31, 2023 was 4.35750%.
[44] The interest rate on these loans is subject to 3 Month BKBM, which as of June 30, 2024 was 5.62000%.
[45] The interest rate on these loans is subject to 3 Month BKBM, which as of December 31, 2023 was 5.63000%.
[46] The interest rate on these loans is subject to 6 Month SARON, which as of June 30, 2024 was 1.21579%.
[47] The interest rate on these loans is subject to 6 Month SARON, which as of December 31, 2023 was 1.69524%.
[48] 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.
[49] 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.
[50] The interest rate on these loans is subject to 1 Month NIBOR, which as of June 30, 2024 was 4.61000%.
[51] The interest rate on these loans is subject to 1 Month NIBOR, which as of December 31, 2023 was 4.59000%.
[52] The interest rate on these loans is subject to 1 Month BBSY, which as of June 30, 2024 was 4.30450%.
[53] The interest rate on these loans is subject to 1 Month CORRA, which as of June 30, 2024 was 4.74437%.
[54] The interest rate on these loans is subject to 1 Month CDOR, which as of December 31, 2023 was 5.45500%.