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INVESTMENTS - Sierra Senior Loan Strategy JV I LLC (Details)
$ in Thousands
 3 Months Ended
Feb. 25, 2022
member
Mar. 31, 2025
USD ($)
Mar. 31, 2024
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Aug. 12, 2022
USD ($)
Jul. 08, 2021
USD ($)
Feb. 08, 2021
USD ($)
May 13, 2020
USD ($)
Schedule of Investments [Line Items]                  
Number of members | member 2                
Total dividend income   $ 10,742 $ 8,477            
Fair Value   2,571,228   $ 2,449,272          
Cost   2,610,675   2,522,696          
Borrowings under credit facility   497,268   438,590          
Investment, Identifier [Axis]: 1WorldSync, Inc., First Lien Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [1],[2],[3]   7,030              
Cost [1],[2],[3]   7,021              
Investment, Identifier [Axis]: 1WorldSync, Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [4],[5],[6]       7,049          
Cost [4],[5],[6]       7,031          
Investment, Identifier [Axis]: A.T. Holdings II LTD, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   8,303 [3],[7],[8]   8,479 [6],[9],[10]          
Cost   11,875 [3],[7],[8]   11,875 [6],[9],[10]          
Investment, Identifier [Axis]: AD Bidco, Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   10,073 [1],[2],[3],[11]   10,099 [4],[5],[6],[12]          
Cost   9,781 [1],[2],[3],[11]   9,794 [4],[5],[6],[12]          
Investment, Identifier [Axis]: AD Bidco, Inc., Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   0 [1],[2],[3],[11]   0 [4],[5],[6],[12]          
Cost   (27) [1],[2],[3],[11]   (28) [4],[5],[6],[12]          
Investment, Identifier [Axis]: ADB Safegate, Second Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   7,315 [1],[2],[8]   6,523 [4],[5],[6],[10]          
Cost   7,514 [1],[2],[8]   7,232 [4],[5],[6],[10]          
Investment, Identifier [Axis]: AIT Worldwide Logistics Holdings, Inc., Partnership Units                  
Schedule of Investments [Line Items]                  
Fair Value   587 [3],[13]   550 [6],[14]          
Cost   349 [3],[13]   349 [6],[14]          
Investment, Identifier [Axis]: AMMC CLO 22, Limited Series 2018-22A, Subordinated Structured Notes                  
Schedule of Investments [Line Items]                  
Fair Value   469 [3],[8],[15]   1,733 [6],[10],[16]          
Cost   1,188 [3],[8],[15]   2,439 [6],[10],[16]          
Investment, Identifier [Axis]: APC1 Holding, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   2,484 [2],[3],[8],[17]   2,370 [5],[6],[10],[18]          
Cost   2,327 [2],[3],[8],[17]   2,324 [5],[6],[10],[18]          
Investment, Identifier [Axis]: APOG Bidco Pty Ltd, Second Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [5],[6],[10],[19]       864          
Cost [5],[6],[10],[19]       1,030          
Investment, Identifier [Axis]: ASC Communications, LLC, Class A Units                  
Schedule of Investments [Line Items]                  
Fair Value   935 [3],[13]   869 [6]          
Cost   539 [3],[13]   539 [6]          
Investment, Identifier [Axis]: ASC Communications, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   6,601 [2],[3],[20]   7,344 [5],[6],[21]          
Cost   6,546 [2],[3],[20]   7,277 [5],[6],[21]          
Investment, Identifier [Axis]: ASC Communications, LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   0 [2],[3],[11],[20]   0 [5],[6],[12],[21]          
Cost   (8) [2],[3],[11],[20]   (9) [5],[6],[12],[21]          
Investment, Identifier [Axis]: ATL II MRO Holdings Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   19,013 [1],[2],[3]   19,021 [4],[5],[6]          
Cost   18,964 [1],[2],[3]   18,994 [4],[5],[6]          
Investment, Identifier [Axis]: ATL II MRO Holdings Inc., Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   (43) [1],[2],[3],[11]   (49) [4],[5],[6],[12]          
Cost   (47) [1],[2],[3],[11]   (50) [4],[5],[6],[12]          
Investment, Identifier [Axis]: AVSC Holding Corp., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [2],[3],[20]   2              
Cost [2],[3],[20]   2              
Investment, Identifier [Axis]: AVSC Holding Corp., First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value [5],[21]       148          
Cost [5],[21]       148          
Investment, Identifier [Axis]: AVSC Holding Corp., First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value [5],[21]       2          
Cost [5],[21]       2          
Investment, Identifier [Axis]: Accelerant Holdings, Class A Convertible Preferred Equity                  
Schedule of Investments [Line Items]                  
Fair Value   6,472 [3],[13]   6,347 [6],[14]          
Cost   5,000 [3],[13]   5,000 [6],[14]          
Investment, Identifier [Axis]: Accelerant Holdings, Class B Convertible Preferred Equity                  
Schedule of Investments [Line Items]                  
Fair Value   2,375 [3],[13]   2,285 [6],[14]          
Cost   1,667 [3],[13]   1,667 [6],[14]          
Investment, Identifier [Axis]: Accelerant Holdings, Preferred Stock                  
Schedule of Investments [Line Items]                  
Fair Value   8,287 [3],[13]   7,840 [6],[14]          
Cost   7,840 [3],[13]   7,840 [6],[14]          
Investment, Identifier [Axis]: Accelevation LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [2],[3],[11],[20]   2,939              
Cost [2],[3],[11],[20]   2,941              
Investment, Identifier [Axis]: Accelevation LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value [2],[3],[11],[20]   104              
Cost [2],[3],[11],[20]   104              
Investment, Identifier [Axis]: Acclime Holdings HK Limited, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   2,470 [2],[3],[8],[22]   2,438 [5],[6],[10],[23]          
Cost   2,470 [2],[3],[8],[22]   2,467 [5],[6],[10],[23]          
Investment, Identifier [Axis]: Accurus Aerospace Corporation, Common Stock                  
Schedule of Investments [Line Items]                  
Fair Value   0 [3],[13]   0 [6],[14]          
Cost   438 [3],[13]   438 [6],[14]          
Investment, Identifier [Axis]: Accurus Aerospace Corporation, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   11,738 [1],[2],[3]   11,612 [4],[5],[6]          
Cost   11,876 [1],[2],[3]   11,900 [4],[5],[6]          
Investment, Identifier [Axis]: Accurus Aerospace Corporation, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   2,398 [1],[2],[3],[11]   1,768 [4],[5],[6],[12]          
Cost   2,426 [1],[2],[3],[11]   1,825 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Acogroup, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   5,497 [2],[3],[8],[17]   5,412 [5],[6],[10],[24]          
Cost   7,957 [2],[3],[8],[17]   7,708 [5],[6],[10],[24]          
Investment, Identifier [Axis]: Adhefin International, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   1,784 [2],[3],[8],[11],[17]   1,716 [5],[6],[10],[12],[18]          
Cost   1,770 [2],[3],[8],[11],[17]   1,768 [5],[6],[10],[12],[18]          
Investment, Identifier [Axis]: Adhefin International, Subordinated Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   345 [2],[3],[8],[17]   326 [5],[6],[10],[18]          
Cost   342 [2],[3],[8],[17]   341 [5],[6],[10],[18]          
Investment, Identifier [Axis]: Advantage Software Company (The), LLC, Class A1 Partnership Units                  
Schedule of Investments [Line Items]                  
Fair Value   581 [3],[13]   593 [6],[14]          
Cost   280 [3],[13]   280 [6],[14]          
Investment, Identifier [Axis]: Advantage Software Company (The), LLC, Class A2 Partnership Units                  
Schedule of Investments [Line Items]                  
Fair Value   150 [3],[13]   153 [6],[14]          
Cost   72 [3],[13]   72 [6],[14]          
Investment, Identifier [Axis]: Advantage Software Company (The), LLC, Class B1 Partnership Units                  
Schedule of Investments [Line Items]                  
Fair Value   0 [3],[13]   0 [6],[14]          
Cost   9 [3],[13]   9 [6],[14]          
Investment, Identifier [Axis]: Advantage Software Company (The), LLC, Class B2 Partnership Units                  
Schedule of Investments [Line Items]                  
Fair Value   0 [3],[13]   0 [6],[14]          
Cost   2 [3],[13]   2 [6],[14]          
Investment, Identifier [Axis]: Air Canada 2020-2 Class B Pass Through Trust, Structured Secured Note - Class B                  
Schedule of Investments [Line Items]                  
Fair Value   2,393   2,411          
Cost   2,370   2,370          
Investment, Identifier [Axis]: AirX Climate Solutions, Inc., First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value   3,260 [1],[2],[3]   2,710 [4],[5],[6]          
Cost   3,254 [1],[2],[3]   2,707 [4],[5],[6]          
Investment, Identifier [Axis]: AirX Climate Solutions, Inc., First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value   3,270 [1],[2],[3],[11]   3,828 [4],[5],[6],[12]          
Cost   3,198 [1],[2],[3],[11]   3,754 [4],[5],[6],[12]          
Investment, Identifier [Axis]: AirX Climate Solutions, Inc., Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   0 [1],[2],[3],[11]   0 [4],[5],[6],[12]          
Cost   (14) [1],[2],[3],[11]   (15) [4],[5],[6],[12]          
Investment, Identifier [Axis]: AlliA Insurance Brokers NV, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   4,797 [2],[3],[8],[11],[17]   4,569 [5],[6],[10],[12],[24]          
Cost   4,650 [2],[3],[8],[11],[17]   4,646 [5],[6],[10],[12],[24]          
Investment, Identifier [Axis]: Alpine SG, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   12,775 [1],[2],[3],[15]   22,949 [4],[5],[6],[16]          
Cost   12,522 [1],[2],[3],[15]   22,664 [4],[5],[6],[16]          
Investment, Identifier [Axis]: Amalfi Midco, Class B Common Stock                  
Schedule of Investments [Line Items]                  
Fair Value   2,553 [3],[8],[13]   1,239 [6],[10],[14]          
Cost   1,115 [3],[8],[13]   1,115 [6],[10],[14]          
Investment, Identifier [Axis]: Amalfi Midco, Second Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   311 [3],[8]   290 [6],[10]          
Cost   301 [3],[8]   301 [6],[10]          
Investment, Identifier [Axis]: Amalfi Midco, Subordinated Loan Notes                  
Schedule of Investments [Line Items]                  
Fair Value   5,819 [3],[8]   5,492 [6],[10]          
Cost   5,415 [3],[8]   5,416 [6],[10]          
Investment, Identifier [Axis]: Amalfi Midco, Warrants                  
Schedule of Investments [Line Items]                  
Fair Value   1,075 [3],[8],[13]   919 [6],[10],[14]          
Cost   4 [3],[8],[13]   4 [6],[10],[14]          
Investment, Identifier [Axis]: Americo Chemical Products, LLC, Common Stock                  
Schedule of Investments [Line Items]                  
Fair Value   120 [3],[13]   119 [6],[14]          
Cost   88 [3],[13]   88 [6],[14]          
Investment, Identifier [Axis]: Americo Chemical Products, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   2,557 [2],[3],[20]   2,611 [5],[6],[21]          
Cost   2,560 [2],[3],[20]   2,604 [5],[6],[21]          
Investment, Identifier [Axis]: Americo Chemical Products, LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   (8) [2],[3],[11],[20]   (7) [5],[6],[12],[21]          
Cost   (8) [2],[3],[11],[20]   (9) [5],[6],[12],[21]          
Investment, Identifier [Axis]: AnalytiChem Holding GmbH, First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value   4,076 [2],[3],[8],[17]   2,995 [5],[6],[10],[18]          
Cost   4,141 [2],[3],[8],[17]   3,192 [5],[6],[10],[18]          
Investment, Identifier [Axis]: AnalytiChem Holding GmbH, First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value   1,657 [2],[3],[8],[25]   1,576 [5],[6],[10],[24]          
Cost   1,594 [2],[3],[8],[25]   1,592 [5],[6],[10],[24]          
Investment, Identifier [Axis]: AnalytiChem Holding GmbH, First Lien Senior Secured Term Loan 3                  
Schedule of Investments [Line Items]                  
Fair Value   1,011 [1],[2],[3],[8]   904 [5],[6],[10],[24]          
Cost   1,019 [1],[2],[3],[8]   947 [5],[6],[10],[24]          
Investment, Identifier [Axis]: AnalytiChem Holding GmbH, First Lien Senior Secured Term Loan 4                  
Schedule of Investments [Line Items]                  
Fair Value [4],[5],[6],[10]       1,008          
Cost [4],[5],[6],[10]       1,019          
Investment, Identifier [Axis]: Apex Bidco Limited, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [5],[6],[10],[26]       3,180          
Cost [5],[6],[10],[26]       3,206          
Investment, Identifier [Axis]: Apex Bidco Limited, First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value [2],[3],[8],[27]   1,830              
Cost [2],[3],[8],[27]   1,894              
Investment, Identifier [Axis]: Apex Bidco Limited, First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value [2],[3],[8],[27]   1,399              
Cost [2],[3],[8],[27]   1,317              
Investment, Identifier [Axis]: Apex Bidco Limited, Subordinated Senior Unsecured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   310 [3],[8]   297 [6],[10]          
Cost   340 [3],[8]   333 [6],[10]          
Investment, Identifier [Axis]: Apidos CLO XXIV, Series 2016-24A, Subordinated Structured Notes                  
Schedule of Investments [Line Items]                  
Fair Value   2,429 [8],[15]   3,272 [10],[16]          
Cost   3,561 [8],[15]   3,527 [10],[16]          
Investment, Identifier [Axis]: Aptus 1829. GmbH, Common Stock                  
Schedule of Investments [Line Items]                  
Fair Value   0 [3],[8],[13]   0 [6],[10],[14]          
Cost   12 [3],[8],[13]   12 [6],[10],[14]          
Investment, Identifier [Axis]: Aptus 1829. GmbH, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   2,082 [2],[3],[8],[25]   1,994 [5],[6],[10],[24]          
Cost   2,486 [2],[3],[8],[25]   2,484 [5],[6],[10],[24]          
Investment, Identifier [Axis]: Aptus 1829. GmbH, Preferred Stock                  
Schedule of Investments [Line Items]                  
Fair Value   49 [3],[8],[13]   40 [6],[10],[14]          
Cost   120 [3],[8],[13]   120 [6],[10],[14]          
Investment, Identifier [Axis]: Apus Bidco Limited, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   3,718 [2],[3],[8],[28]   3,608 [5],[6],[10],[29]          
Cost   3,917 [2],[3],[8],[28]   3,913 [5],[6],[10],[29]          
Investment, Identifier [Axis]: Aquavista Watersides 2 LTD, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   6,481 [2],[3],[8],[28]   6,314 [5],[6],[10],[12],[26]          
Cost   6,541 [2],[3],[8],[28]   6,492 [5],[6],[10],[12],[26]          
Investment, Identifier [Axis]: Aquavista Watersides 2 LTD, Second Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   2,166 [2],[3],[8],[28]   2,119 [5],[6],[10],[26]          
Cost   2,188 [2],[3],[8],[28]   2,187 [5],[6],[10],[26]          
Investment, Identifier [Axis]: Arc Education, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   3,982 [2],[3],[8],[11],[17]   3,807 [5],[6],[10],[12],[18]          
Cost   3,716 [2],[3],[8],[11],[17]   3,712 [5],[6],[10],[12],[18]          
Investment, Identifier [Axis]: Arch Global Precision LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   8,805 [1],[2],[3]   8,769 [4],[5],[6]          
Cost   8,966 [1],[2],[3]   8,966 [4],[5],[6]          
Investment, Identifier [Axis]: Archimede, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   6,042 [2],[3],[8],[17]   5,676 [5],[6],[10],[18]          
Cost   6,503 [2],[3],[8],[17]   6,498 [5],[6],[10],[18]          
Investment, Identifier [Axis]: Argus Bidco Limited, Common Stock                  
Schedule of Investments [Line Items]                  
Fair Value   0 [3],[8],[13]   0 [6],[10],[14]          
Cost   1 [3],[8],[13]   1 [6],[10],[14]          
Investment, Identifier [Axis]: Argus Bidco Limited, Equity Loan Notes                  
Schedule of Investments [Line Items]                  
Fair Value   31 [3],[8]   33 [6],[10]          
Cost   63 [3],[8]   63 [6],[10]          
Investment, Identifier [Axis]: Argus Bidco Limited, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [2],[3],[8],[11],[28]   1,607              
Cost [2],[3],[8],[11],[28]   1,597              
Investment, Identifier [Axis]: Argus Bidco Limited, First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value   1,826 [2],[3],[8],[25]   1,773 [5],[6],[10],[18]          
Cost   1,876 [2],[3],[8],[25]   1,875 [5],[6],[10],[18]          
Investment, Identifier [Axis]: Argus Bidco Limited, First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value   125 [2],[3],[8],[22]   127 [4],[5],[6],[10]          
Cost   134 [2],[3],[8],[22]   133 [4],[5],[6],[10]          
Investment, Identifier [Axis]: Argus Bidco Limited, First Lien Senior Secured Term Loan 3                  
Schedule of Investments [Line Items]                  
Fair Value [5],[6],[10],[12],[26]       1,584          
Cost [5],[6],[10],[12],[26]       1,596          
Investment, Identifier [Axis]: Argus Bidco Limited, Preferred Stock                  
Schedule of Investments [Line Items]                  
Fair Value   31 [3],[8]   33 [6],[10]          
Cost   63 [3],[8]   63 [6],[10]          
Investment, Identifier [Axis]: Argus Bidco Limited, Second Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   792 [3],[8]   777 [6],[10]          
Cost   812 [3],[8]   811 [6],[10]          
Investment, Identifier [Axis]: Armstrong Transport Group (Pele Buyer, LLC), First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   5,709 [2],[3],[22]   5,637 [4],[5],[6]          
Cost   5,937 [2],[3],[22]   5,935 [4],[5],[6]          
Investment, Identifier [Axis]: Artemis Bidco Limited, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   270 [2],[3],[8],[11],[17]   256 [5],[6],[10],[12],[18]          
Cost   262 [2],[3],[8],[11],[17]   261 [5],[6],[10],[12],[18]          
Investment, Identifier [Axis]: Astra Bidco Limited, First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value   412 [2],[3],[8],[17]   396 [5],[6],[10],[18]          
Cost   408 [2],[3],[8],[17]   408 [5],[6],[10],[18]          
Investment, Identifier [Axis]: Astra Bidco Limited, First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value   2,493 [2],[3],[8],[11],[28]   2,365 [5],[6],[10],[12],[29]          
Cost   2,517 [2],[3],[8],[11],[28]   2,451 [5],[6],[10],[12],[29]          
Investment, Identifier [Axis]: Auxi International, First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value   1,422 [2],[3],[8],[17]   1,351 [5],[6],[10],[24]          
Cost   1,540 [2],[3],[8],[17]   1,538 [5],[6],[10],[24]          
Investment, Identifier [Axis]: Auxi International, First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value   813 [2],[3],[8],[28]   782 [5],[6],[10],[29]          
Cost   910 [2],[3],[8],[28]   909 [5],[6],[10],[29]          
Investment, Identifier [Axis]: Avance Clinical Bidco Pty Ltd, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   1,760 [2],[3],[8],[11],[30]   1,967 [5],[6],[10],[12],[31]          
Cost   1,961 [2],[3],[8],[11],[30]   2,204 [5],[6],[10],[12],[31]          
Investment, Identifier [Axis]: Azalea Buyer, Inc., Common Stock                  
Schedule of Investments [Line Items]                  
Fair Value   302 [3],[13]   288 [6],[14]          
Cost   192 [3],[13]   192 [6],[14]          
Investment, Identifier [Axis]: Azalea Buyer, Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   4,773 [2],[3],[20]   4,785 [5],[6],[12],[21]          
Cost   4,730 [2],[3],[20]   4,731 [5],[6],[12],[21]          
Investment, Identifier [Axis]: Azalea Buyer, Inc., Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   0 [2],[3],[11],[20]   0 [5],[6],[12],[21]          
Cost   (4) [2],[3],[11],[20]   (5) [5],[6],[12],[21]          
Investment, Identifier [Axis]: Azalea Buyer, Inc., Subordinated Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   1,868 [3]   1,805 [6]          
Cost   1,853 [3]   1,799 [6]          
Investment, Identifier [Axis]: BKF Buyer, Inc., Common Stock                  
Schedule of Investments [Line Items]                  
Fair Value   1,065 [3],[13]   1,045 [6],[14]          
Cost   1,004 [3],[13]   1,004 [6],[14]          
Investment, Identifier [Axis]: BKF Buyer, Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   8,008 [2],[3],[20]   8,015 [5],[6],[21]          
Cost   8,005 [2],[3],[20]   8,013 [5],[6],[21]          
Investment, Identifier [Axis]: BKF Buyer, Inc., Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   (48) [2],[3],[11],[20]   (52) [5],[6],[12],[21]          
Cost   (47) [2],[3],[11],[20]   (52) [5],[6],[12],[21]          
Investment, Identifier [Axis]: BNI Global, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   9,739 [2],[3],[32]   9,302 [5],[6],[33]          
Cost   9,689 [2],[3],[32]   9,694 [5],[6],[33]          
Investment, Identifier [Axis]: BPG Holdings IV Corp, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   12,528 [1],[2],[3]   12,560 [4],[5],[6]          
Cost   13,436 [1],[2],[3]   13,442 [4],[5],[6]          
Investment, Identifier [Axis]: BVI Medical, Inc., Second Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [5],[6],[18]       9,482          
Cost [5],[6],[18]       9,614          
Investment, Identifier [Axis]: Bariacum S.A, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   3,169 [2],[3],[8],[25]   3,107 [5],[6],[10],[24]          
Cost   3,263 [2],[3],[8],[25]   3,260 [5],[6],[10],[24]          
Investment, Identifier [Axis]: Basin Innovation Group, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   13,940 [1],[2],[3],[11]   13,949 [5],[6],[12],[21]          
Cost   13,926 [1],[2],[3],[11]   13,952 [5],[6],[12],[21]          
Investment, Identifier [Axis]: Basin Innovation Group, LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   (25) [1],[2],[3],[11]   (28) [5],[6],[12],[21]          
Cost   (26) [1],[2],[3],[11]   (28) [5],[6],[12],[21]          
Investment, Identifier [Axis]: Benify (Bennevis AB), First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [5],[6],[10],[34]       854          
Cost [5],[6],[10],[34]       996          
Investment, Identifier [Axis]: Beyond Risk Management, Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   5,309 [1],[2],[3],[11]   5,322 [4],[5],[6],[12]          
Cost   5,243 [1],[2],[3],[11]   5,242 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Bidwax, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   7,546 [2],[3],[8],[25]   7,088 [5],[6],[10],[24]          
Cost   8,156 [2],[3],[8],[25]   8,148 [5],[6],[10],[24]          
Investment, Identifier [Axis]: Biolam Group, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   1,153 [2],[3],[8],[11],[25],[35]   1,406 [5],[6],[10],[12],[24],[36]          
Cost   2,517 [2],[3],[8],[11],[25],[35]   2,517 [5],[6],[10],[12],[24],[36]          
Investment, Identifier [Axis]: Black Angus Steakhouses, LLC, First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value   0 [3],[15],[35],[37],[38]   0 [6],[16],[36],[37],[38],[39] $ 4,869 [39],[40]        
Cost   9,628 [3],[15],[35]   9,628 [6],[16],[36]          
Investment, Identifier [Axis]: Black Angus Steakhouses, LLC, First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value   2,639 [3],[15],[35],[37],[38]   2,744 [5],[6],[16],[21],[36],[37],[38],[39] 7,166 [39],[40]        
Cost   8,091 [3],[15],[35]   8,091 [5],[6],[16],[21],[36]          
Investment, Identifier [Axis]: Black Angus Steakhouses, LLC, LLC Units                  
Schedule of Investments [Line Items]                  
Fair Value   0 [3],[13],[15]   0 [6],[14],[16]          
Cost   0 [3],[13],[15]   0 [6],[14],[16]          
Investment, Identifier [Axis]: Black Angus Steakhouses, LLC, LLC Units                  
Schedule of Investments [Line Items]                  
Fair Value   0 [38]   0 [38] 0 [40]        
Investment, Identifier [Axis]: Bounteous, Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   4,079 [2],[3],[20]   4,081 [4],[5],[6]          
Cost   4,061 [2],[3],[20]   4,067 [4],[5],[6]          
Investment, Identifier [Axis]: Bridger Aerospace Group Holdings, LLC, Municipal Revenue Bond                  
Schedule of Investments [Line Items]                  
Fair Value   28,002   27,859          
Cost   27,200   27,200          
Investment, Identifier [Axis]: Bridger Aerospace Group Holdings, LLC, Preferred Stock- Series C                  
Schedule of Investments [Line Items]                  
Fair Value   14,874 [3]   14,618 [6]          
Cost   16,725 [3]   16,725 [6]          
Investment, Identifier [Axis]: BrightSign LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   4,645 [2],[3],[20]   4,657 [5],[6],[21]          
Cost   4,625 [2],[3],[20]   4,635 [5],[6],[21]          
Investment, Identifier [Axis]: BrightSign LLC, LLC Units                  
Schedule of Investments [Line Items]                  
Fair Value [3]   1,251              
Cost [3]   1,107              
Investment, Identifier [Axis]: BrightSign LLC, LLC units                  
Schedule of Investments [Line Items]                  
Fair Value [6]       1,174          
Cost [6]       1,107          
Investment, Identifier [Axis]: BrightSign LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   1,085 [2],[3],[11],[20]   1,085 [5],[6],[12],[21]          
Cost   1,080 [2],[3],[11],[20]   1,079 [5],[6],[12],[21]          
Investment, Identifier [Axis]: Brightpay Limited, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [5],[6],[10],[12],[18]       386          
Cost [5],[6],[10],[12],[18]       388          
Investment, Identifier [Axis]: Brightpay Limited, First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value [2],[3],[8],[17]   1,810              
Cost [2],[3],[8],[17]   1,945              
Investment, Identifier [Axis]: Brightpay Limited, First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value   407 [2],[3],[8],[17]   1,720 [5],[6],[10],[24]          
Cost   391 [2],[3],[8],[17]   1,931 [5],[6],[10],[24]          
Investment, Identifier [Axis]: British Airways 2020-1 Class B Pass Through Trust, First Lien Senior Secured Bond                  
Schedule of Investments [Line Items]                  
Fair Value   481   507          
Cost   462   489          
Investment, Identifier [Axis]: British Engineering Services Holdco Limited, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   15,097 [2],[3],[8],[28]   14,454 [5],[6],[10],[29]          
Cost   15,783 [2],[3],[8],[28]   15,527 [5],[6],[10],[29]          
Investment, Identifier [Axis]: Broadstone Group UK LTD, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [2],[3],[8],[11],[27]   3,117              
Cost [2],[3],[8],[11],[27]   3,072              
Investment, Identifier [Axis]: Brook & Whittle Holding Corp., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   2,285 [1],[2],[15]   2,461 [4],[5],[16]          
Cost   2,744 [1],[2],[15]   2,751 [4],[5],[16]          
Investment, Identifier [Axis]: Brown Machine Group Holdings, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   5,582 [1],[2],[3]   5,716 [5],[6],[21]          
Cost   6,081 [1],[2],[3]   6,078 [5],[6],[21]          
Investment, Identifier [Axis]: Burgess Point Purchaser Corporation, LP Units                  
Schedule of Investments [Line Items]                  
Fair Value   450 [3],[13]   450 [6],[14]          
Cost   455 [3],[13]   455 [6],[14]          
Investment, Identifier [Axis]: Burgess Point Purchaser Corporation, Second Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   4,218 [1],[2],[3]   4,364 [5],[6],[23]          
Cost   4,410 [1],[2],[3]   4,405 [5],[6],[23]          
Investment, Identifier [Axis]: CAi Software, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   12,498 [1],[2],[3]   12,455 [4],[5],[6]          
Cost   12,328 [1],[2],[3]   12,349 [4],[5],[6]          
Investment, Identifier [Axis]: CAi Software, LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   1,261 [1],[2],[3],[11]   1,246 [4],[5],[6],[12]          
Cost   1,227 [1],[2],[3],[11]   1,225 [4],[5],[6],[12]          
Investment, Identifier [Axis]: CCFF Buyer, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   5,807 [2],[3],[11],[22]   5,809 [4],[5],[6],[12]          
Cost   5,780 [2],[3],[11],[22]   5,788 [4],[5],[6],[12]          
Investment, Identifier [Axis]: CCFF Buyer, LLC, LLC Units                  
Schedule of Investments [Line Items]                  
Fair Value   238 [3]   235 [6]          
Cost   233 [3]   233 [6]          
Investment, Identifier [Axis]: CCFF Buyer, LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   (13) [2],[3],[11],[22]   (15) [4],[5],[6],[12]          
Cost   (17) [2],[3],[11],[22]   (18) [4],[5],[6],[12]          
Investment, Identifier [Axis]: CGI Parent, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   13,831 [1],[2],[3]   14,008 [4],[5],[6]          
Cost   13,758 [1],[2],[3]   13,780 [4],[5],[6]          
Investment, Identifier [Axis]: CGI Parent, LLC, Preferred Stock                  
Schedule of Investments [Line Items]                  
Fair Value   1,909 [3],[13]   1,710 [6],[14]          
Cost   722 [3],[13]   722 [6],[14]          
Investment, Identifier [Axis]: CGI Parent, LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   534 [1],[2],[3],[11]   0 [4],[5],[6],[12]          
Cost   535 [1],[2],[3],[11]   (18) [4],[5],[6],[12]          
Investment, Identifier [Axis]: CM Acquisitions Holdings Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [4],[5],[6]       12,140          
Cost [4],[5],[6]       12,462          
Investment, Identifier [Axis]: CM Acquisitions Holdings Inc., First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value   1,540 [1],[2],[3]   1,523 [4],[5],[6]          
Cost   1,580 [1],[2],[3]   1,563 [4],[5],[6]          
Investment, Identifier [Axis]: CM Acquisitions Holdings Inc., First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value [1],[2],[3]   12,167              
Cost [1],[2],[3]   12,487              
Investment, Identifier [Axis]: CMT Opco Holding, LLC (Concept Machine), First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   3,398 [1],[2],[3]   3,381 [4],[5],[6]          
Cost   4,738 [1],[2],[3]   4,746 [4],[5],[6]          
Investment, Identifier [Axis]: CMT Opco Holding, LLC (Concept Machine), LLC Units                  
Schedule of Investments [Line Items]                  
Fair Value   0 [3],[13]   0 [6],[14]          
Cost   506 [3],[13]   506 [6],[14]          
Investment, Identifier [Axis]: CSL DualCom, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   2,229 [2],[3],[8],[41]   2,016 [5],[6],[10],[12],[42]          
Cost   2,077 [2],[3],[8],[41]   1,922 [5],[6],[10],[12],[42]          
Investment, Identifier [Axis]: CTI Foods Holdings Co., LLC, 2024 LIFO Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   4,370 [1],[2],[3]   4,211 [4],[5],[6]          
Cost   4,239 [1],[2],[3]   4,067 [4],[5],[6]          
Investment, Identifier [Axis]: CTI Foods Holdings Co., LLC, Common Stock                  
Schedule of Investments [Line Items]                  
Fair Value   800 [3],[13]   695 [6],[14]          
Cost   0 [3],[13]   0 [6],[14]          
Investment, Identifier [Axis]: CTI Foods Holdings Co., LLC, First Out Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [4],[5],[6]       2,860          
Cost [4],[5],[6]       2,797          
Investment, Identifier [Axis]: CTI Foods Holdings Co., LLC, First Out Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value [1],[2],[3]   809              
Cost [1],[2],[3]   809              
Investment, Identifier [Axis]: CTI Foods Holdings Co., LLC, First Out Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value [1],[2],[3]   2,154              
Cost [1],[2],[3]   2,101              
Investment, Identifier [Axis]: CTI Foods Holdings Co., LLC, Second Out Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   618 [1],[2],[3]   597 [4],[5],[6]          
Cost   618 [1],[2],[3]   597 [4],[5],[6]          
Investment, Identifier [Axis]: CW Group Holdings, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   2,725 [1],[2],[3]   2,732 [4],[5],[6]          
Cost   2,704 [1],[2],[3]   2,708 [4],[5],[6]          
Investment, Identifier [Axis]: CW Group Holdings, LLC, LLC Units                  
Schedule of Investments [Line Items]                  
Fair Value   427 [3]   371 [6]          
Cost   161 [3]   161 [6]          
Investment, Identifier [Axis]: Caldwell & Gregory LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   19,062 [1],[2],[3],[11]   18,833 [4],[5],[6],[12]          
Cost   19,033 [1],[2],[3],[11]   18,817 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Caldwell & Gregory LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   (31) [1],[2],[3],[11]   (34) [4],[5],[6],[12]          
Cost   (34) [1],[2],[3],[11]   (36) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Canadian Orthodontic Partners Corp., Class A Equity                  
Schedule of Investments [Line Items]                  
Fair Value   0 [3],[8],[13]   0 [6],[10],[14]          
Cost   389 [3],[8],[13]   389 [6],[10],[14]          
Investment, Identifier [Axis]: Canadian Orthodontic Partners Corp., Class C - Warrants                  
Schedule of Investments [Line Items]                  
Fair Value   0 [3],[8],[13]   0 [6],[10],[14]          
Cost   0 [3],[8],[13]   0 [6],[10],[14]          
Investment, Identifier [Axis]: Canadian Orthodontic Partners Corp., Class X Equity                  
Schedule of Investments [Line Items]                  
Fair Value   0 [3],[8],[13]   0 [6],[10],[14]          
Cost   35 [3],[8],[13]   35 [6],[10],[14]          
Investment, Identifier [Axis]: Canadian Orthodontic Partners Corp., Common Stock                  
Schedule of Investments [Line Items]                  
Fair Value   0 [3],[8],[13]   0 [6],[10],[14]          
Cost   0 [3],[8],[13]   0 [6],[10],[14]          
Investment, Identifier [Axis]: Canadian Orthodontic Partners Corp., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   302 [2],[3],[8],[35],[43]   360 [5],[6],[10],[36],[44]          
Cost   1,860 [2],[3],[8],[35],[43]   1,860 [5],[6],[10],[36],[44]          
Investment, Identifier [Axis]: Canadian Orthodontic Partners Corp., Super Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   256 [3],[8],[11]   185 [6],[10],[12]          
Cost   79 [3],[8],[11]   64 [6],[10],[12]          
Investment, Identifier [Axis]: Caribou Holding Company, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [4],[5],[6],[10]       4,236          
Cost [4],[5],[6],[10]       4,285          
Investment, Identifier [Axis]: Caribou Holding Company, LLC, LLC Units                  
Schedule of Investments [Line Items]                  
Fair Value [6],[10],[14]       682          
Cost [6],[10],[14]       682          
Investment, Identifier [Axis]: Cascade Residential Services LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   3,769 [1],[2],[3],[11]   3,742 [4],[5],[6],[12]          
Cost   3,913 [1],[2],[3],[11]   3,918 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Cascade Residential Services LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   298 [1],[2],[3],[11]   312 [4],[5],[6]          
Cost   308 [1],[2],[3],[11]   324 [4],[5],[6]          
Investment, Identifier [Axis]: Catawba River Limited, Structured - Junior Note                  
Schedule of Investments [Line Items]                  
Fair Value   2,241 [3],[8],[13]   2,365 [6],[10]          
Cost   4,442 [3],[8],[13]   4,442 [6],[10]          
Investment, Identifier [Axis]: Celebration Bidco, LLC, Common Stock                  
Schedule of Investments [Line Items]                  
Fair Value   8,353 [3],[13]   11,262 [6],[14]          
Cost   12,177 [3],[13]   12,177 [6],[14]          
Investment, Identifier [Axis]: Celebration Bidco, LLC, Common Stock                  
Schedule of Investments [Line Items]                  
Fair Value   8,353 [45]   11,262 [46] 12,177 [46]        
Investment, Identifier [Axis]: Celebration Bidco, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   7,654 [1],[3]   6,414 [4],[6]          
Cost   7,918 [1],[3]   6,414 [4],[6]          
Investment, Identifier [Axis]: Celebration Bidco, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   7,654 [45]   6,414 [46] 6,214 [46]        
Investment, Identifier [Axis]: Centralis Finco S.a.r.l., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [5],[6],[10],[18]       2,996          
Cost [5],[6],[10],[18]       2,942          
Investment, Identifier [Axis]: Centralis Finco S.a.r.l., First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value [2],[3],[8],[17]   3,125              
Cost [2],[3],[8],[17]   2,946              
Investment, Identifier [Axis]: Centralis Finco S.a.r.l., First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value [2],[3],[8],[11],[17]   0              
Cost [2],[3],[8],[11],[17]   (38)              
Investment, Identifier [Axis]: Ceres Pharma NV, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   3,317 [2],[3],[8],[25]   3,167 [5],[6],[10],[24]          
Cost   3,295 [2],[3],[8],[25]   3,292 [5],[6],[10],[24]          
Investment, Identifier [Axis]: Coastal Marina Holdings, LLC, LLC Units                  
Schedule of Investments [Line Items]                  
Fair Value   19,983 [3],[13],[45]   16,852 [6],[14],[45] 12,160 [46]        
Cost   16,495 [3],[13]   16,495 [6],[14]          
Investment, Identifier [Axis]: Coastal Marina Holdings, LLC, Subordinated Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value   15,800 [3],[45]   15,770 [6],[45] 15,649 [46]        
Cost   15,715 [3]   15,690 [6]          
Investment, Identifier [Axis]: Coastal Marina Holdings, LLC, Subordinated Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value   7,285 [3],[45]   7,271 [6],[45] 6,868 [46]        
Cost   7,330 [3]   7,322 [6]          
Investment, Identifier [Axis]: Cobham Slip Rings SAS, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   1,303 [1],[2],[3],[8]   1,303 [5],[6],[10],[23]          
Cost   1,288 [1],[2],[3],[8]   1,286 [5],[6],[10],[23]          
Investment, Identifier [Axis]: Coherus Biosciences, Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   3,903 [1],[2],[3]   3,903 [4],[5],[6]          
Cost   3,887 [1],[2],[3]   3,883 [4],[5],[6]          
Investment, Identifier [Axis]: Coherus Biosciences, Inc., Royalty Rights                  
Schedule of Investments [Line Items]                  
Fair Value   6,379 [3]   5,834 [6]          
Cost   3,544 [3]   3,627 [6]          
Investment, Identifier [Axis]: Command Alkon (Project Potter Buyer, LLC), Class B Partnership Units                  
Schedule of Investments [Line Items]                  
Fair Value   151 [3],[13]   175 [6],[14]          
Cost   0 [3],[13]   0 [6],[14]          
Investment, Identifier [Axis]: Compass Precision, LLC, LLC Units                  
Schedule of Investments [Line Items]                  
Fair Value   257 [3],[13]   154 [6],[14]          
Cost   125 [3],[13]   125 [6],[14]          
Investment, Identifier [Axis]: Compass Precision, LLC, Senior Subordinated Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   644 [3]   640 [6]          
Cost   644 [3]   642 [6]          
Investment, Identifier [Axis]: Comply365, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   18,188 [1],[2],[3]   18,663 [5],[6],[21]          
Cost   18,377 [1],[2],[3]   18,409 [5],[6],[21]          
Investment, Identifier [Axis]: Comply365, LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   (25) [1],[2],[3],[11]   0 [5],[6],[12],[21]          
Cost   (14) [1],[2],[3],[11]   (14) [5],[6],[12],[21]          
Investment, Identifier [Axis]: Contabo Finco S.À.R.L, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [5],[6],[10],[18]       4,822          
Cost [5],[6],[10],[18]       4,555          
Investment, Identifier [Axis]: Contabo FincoS.À R.L, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [2],[3],[8],[17]   5,030              
Cost [2],[3],[8],[17]   4,559              
Investment, Identifier [Axis]: Coyo Uprising GmbH, Class A Units                  
Schedule of Investments [Line Items]                  
Fair Value   217 [3],[8],[13]   206 [6],[10],[14]          
Cost   205 [3],[8],[13]   205 [6],[10],[14]          
Investment, Identifier [Axis]: Coyo Uprising GmbH, Class B Units                  
Schedule of Investments [Line Items]                  
Fair Value   412 [3],[8],[13]   381 [6],[10],[14]          
Cost   446 [3],[8],[13]   446 [6],[10],[14]          
Investment, Identifier [Axis]: Coyo Uprising GmbH, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   4,804 [2],[3],[8],[11],[25]   4,590 [5],[6],[10],[12],[18]          
Cost   5,198 [2],[3],[8],[11],[25]   5,194 [5],[6],[10],[12],[18]          
Investment, Identifier [Axis]: DAWGS Intermediate Holdings Co., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [1],[2],[3]   6,752              
Cost [1],[2],[3]   6,752              
Investment, Identifier [Axis]: DAWGS Intermediate Holdings Co., LLC Units                  
Schedule of Investments [Line Items]                  
Fair Value [3],[13]   347              
Cost [3],[13]   347              
Investment, Identifier [Axis]: DAWGS Intermediate Holdings Co., Revolver                  
Schedule of Investments [Line Items]                  
Fair Value [1],[2],[3],[11]   64              
Cost [1],[2],[3],[11]   64              
Investment, Identifier [Axis]: DISA Holdings Corp., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   6,933 [1],[2],[3]   6,950 [4],[5],[6]          
Cost   6,799 [1],[2],[3]   6,808 [4],[5],[6]          
Investment, Identifier [Axis]: DISA Holdings Corp., Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   86 [1],[2],[3],[11]   0 [4],[5],[6],[12]          
Cost   77 [1],[2],[3],[11]   (9) [4],[5],[6],[12]          
Investment, Identifier [Axis]: DataServ Integrations, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   1,871 [2],[3],[22]   1,871 [5],[6],[23]          
Cost   1,845 [2],[3],[22]   1,843 [5],[6],[23]          
Investment, Identifier [Axis]: DataServ Integrations, LLC, Partnership Units                  
Schedule of Investments [Line Items]                  
Fair Value [6],[14]       103          
Cost [6],[14]       96          
Investment, Identifier [Axis]: DataServ Integrations, LLC, Preferred Units                  
Schedule of Investments [Line Items]                  
Fair Value [3],[13]   117              
Cost [3],[13]   96              
Investment, Identifier [Axis]: DataServ Integrations, LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   0 [2],[3],[11],[22]   0 [5],[6],[12],[23]          
Cost   (6) [2],[3],[11],[22]   (6) [5],[6],[12],[23]          
Investment, Identifier [Axis]: David Wood Baking UK Ltd, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   849 [2],[3],[8],[28]   818 [5],[6],[10],[29]          
Cost   822 [2],[3],[8],[28]   820 [5],[6],[10],[29]          
Investment, Identifier [Axis]: DecksDirect, LLC, Class A Units                  
Schedule of Investments [Line Items]                  
Fair Value   0 [3],[13]   0 [6],[14]          
Cost   47 [3],[13]   47 [6],[14]          
Investment, Identifier [Axis]: DecksDirect, LLC, Common Stock                  
Schedule of Investments [Line Items]                  
Fair Value   0 [3],[13]   0 [6],[14]          
Cost   55 [3],[13]   55 [6],[14]          
Investment, Identifier [Axis]: DecksDirect, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   1,295 [1],[2],[3]   1,383 [4],[5],[6]          
Cost   1,534 [1],[2],[3]   1,552 [4],[5],[6]          
Investment, Identifier [Axis]: DecksDirect, LLC, Preferred Stock                  
Schedule of Investments [Line Items]                  
Fair Value [3]   0              
Cost [3]   10              
Investment, Identifier [Axis]: DecksDirect, LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   191 [1],[2],[3],[11]   301 [4],[5],[6],[12]          
Cost   250 [1],[2],[3],[11]   343 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Discovery Buyer, L.P., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [1],[2],[3],[11]   12,261              
Cost [1],[2],[3],[11]   12,266              
Investment, Identifier [Axis]: Discovery Buyer, L.P., Revolver                  
Schedule of Investments [Line Items]                  
Fair Value [1],[2],[3],[11]   (22)              
Cost [1],[2],[3],[11]   (22)              
Investment, Identifier [Axis]: Diversified Packaging Holdings LLC, LLC Units                  
Schedule of Investments [Line Items]                  
Fair Value   381 [3]   333 [6],[14]          
Cost   277 [3]   277 [6],[14]          
Investment, Identifier [Axis]: Diversified Packaging Holdings LLC, Second Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   792 [3]   717 [6]          
Cost   794 [3]   715 [6]          
Investment, Identifier [Axis]: Dragon Bidco, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   2,701 [2],[3],[8],[17]   2,585 [5],[6],[10],[18]          
Cost   2,841 [2],[3],[8],[17]   2,838 [5],[6],[10],[18]          
Investment, Identifier [Axis]: DreamStart Bidco SAS (d/b/a SmartTrade), First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   2,297 [2],[3],[8],[17]   2,202 [5],[6],[10],[18]          
Cost   2,335 [2],[3],[8],[17]   2,333 [5],[6],[10],[18]          
Investment, Identifier [Axis]: Dryden 49 Senior Loan Fund, Series 2017-49A, Subordinated Structured Notes                  
Schedule of Investments [Line Items]                  
Fair Value   46 [8],[13],[15]   437 [10],[14],[16]          
Cost   2,414 [8],[13],[15]   2,766 [10],[14],[16]          
Investment, Identifier [Axis]: Dune Group, First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value   97 [2],[3],[8],[11],[25]   91 [5],[6],[10],[12],[18]          
Cost   118 [2],[3],[8],[11],[25]   117 [5],[6],[10],[12],[18]          
Investment, Identifier [Axis]: Dune Group, First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value   1,361 [1],[2],[3],[8]   193 [4],[5],[6],[10]          
Cost   1,422 [1],[2],[3],[8]   204 [4],[5],[6],[10]          
Investment, Identifier [Axis]: Dune Group, First Lien Senior Secured Term Loan 3                  
Schedule of Investments [Line Items]                  
Fair Value [4],[5],[6],[10]       1,164          
Cost [4],[5],[6],[10]       1,218          
Investment, Identifier [Axis]: Dunlipharder B.V., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   999 [1],[2],[3],[8]   998 [4],[5],[6],[10]          
Cost   991 [1],[2],[3],[8]   991 [4],[5],[6],[10]          
Investment, Identifier [Axis]: Dwyer Instruments, Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   14,422 [1],[2],[3]   14,433 [4],[5],[6]          
Cost   14,402 [1],[2],[3]   14,426 [4],[5],[6]          
Investment, Identifier [Axis]: EB Development, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   1,834 [2],[3],[8],[11],[17]   1,971 [5],[6],[10],[12],[18]          
Cost   1,783 [2],[3],[8],[11],[17]   1,996 [5],[6],[10],[12],[18]          
Investment, Identifier [Axis]: EFC International, Common Stock                  
Schedule of Investments [Line Items]                  
Fair Value   317 [3],[13]   380 [6],[14]          
Cost   231 [3],[13]   231 [6],[14]          
Investment, Identifier [Axis]: EFC International, Senior Unsecured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   803 [3]   797 [6]          
Cost   793 [3]   787 [6]          
Investment, Identifier [Axis]: EMI Porta Holdco LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   11,599 [1],[2],[3]   11,696 [4],[5],[6]          
Cost   12,228 [1],[2],[3]   12,268 [4],[5],[6]          
Investment, Identifier [Axis]: EMI Porta Holdco LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   353 [2],[3],[11],[20]   543 [4],[5],[6],[12]          
Cost   507 [2],[3],[11],[20]   683 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Echo Global Logistics, Inc., Partnership Equity                  
Schedule of Investments [Line Items]                  
Fair Value   375 [3],[13]   417 [6],[14]          
Cost   531 [3],[13]   531 [6],[14]          
Investment, Identifier [Axis]: Echo Global Logistics, Inc., Second Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   9,469 [2],[3],[20]   9,450 [5],[6],[21]          
Cost   9,371 [2],[3],[20]   9,366 [5],[6],[21]          
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   11,300   10,100          
Investment, Identifier [Axis]: Eclipse Business Capital Holdings LLC, Revolver, Unfunded                  
Schedule of Investments [Line Items]                  
Fair Value           $ 22,700 13,600    
Investment, Identifier [Axis]: Eclipse Business Capital Holdings LLC, Second Lien Senior Secured Loan                  
Schedule of Investments [Line Items]                  
Fair Value             $ 89,800    
Investment, Identifier [Axis]: Eclipse Business Capital, LLC units                  
Schedule of Investments [Line Items]                  
Fair Value   136,855 [45]   136,855 [45] 145,799 [46]        
Investment, Identifier [Axis]: Eclipse Business Capital, LLC, LLC Units                  
Schedule of Investments [Line Items]                  
Fair Value   136,855 [3]   136,855 [6]          
Cost   93,052 [3]   93,029 [6]          
Investment, Identifier [Axis]: Eclipse Business Capital, LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   11,273 [3],[11],[20]   10,091 [6],[12],[21]          
Cost   11,202 [3],[11],[20]   10,022 [6],[12],[21]          
Investment, Identifier [Axis]: Eclipse Business Capital, LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   11,273 [45]   10,091 [45] 5,545 [46]        
Investment, Identifier [Axis]: Eclipse Business Capital, LLC, Second Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   4,545 [3]   4,545 [6]          
Cost   4,521 [3]   4,520 [6]          
Investment, Identifier [Axis]: Eclipse Business Capital, Second Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   4,545 [45]   4,545 [45] 4,545 [46]        
Investment, Identifier [Axis]: Electric Equipment & Engineering Co., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   310 [3]   307 [6]          
Cost   310 [3]   307 [6]          
Investment, Identifier [Axis]: Electric Equipment & Engineering Co., LLC Units                  
Schedule of Investments [Line Items]                  
Fair Value   195 [3],[13]   188 [6],[14]          
Cost   188 [3],[13]   188 [6],[14]          
Investment, Identifier [Axis]: Electrical Components International, Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   10,395 [1],[2],[3],[11]   10,410 [5],[6],[12],[23]          
Cost   10,401 [1],[2],[3],[11]   10,419 [5],[6],[12],[23]          
Investment, Identifier [Axis]: Ellkay, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   4,478 [1],[2],[3]   4,348 [4],[5],[6]          
Cost   4,855 [1],[2],[3]   4,875 [4],[5],[6]          
Investment, Identifier [Axis]: Entact Environmental Services, Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   6,495 [1],[2],[3]   6,624 [4],[5],[6]          
Cost   6,488 [1],[2],[3]   6,671 [4],[5],[6]          
Investment, Identifier [Axis]: Eurofins Digital Testing International LUX Holding SARL, First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value   836 [2],[3],[8],[25],[35]   831 [5],[6],[10],[24],[36]          
Cost   1,497 [2],[3],[8],[25],[35]   1,497 [5],[6],[10],[24],[36]          
Investment, Identifier [Axis]: Eurofins Digital Testing International LUX Holding SARL, First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value   437 [1],[2],[3],[8],[35]   453 [4],[5],[6],[10],[36]          
Cost   781 [1],[2],[3],[8],[35]   781 [4],[5],[6],[10],[36]          
Investment, Identifier [Axis]: Eurofins Digital Testing International LUX Holding SARL, First Lien Senior Secured Term Loan 3                  
Schedule of Investments [Line Items]                  
Fair Value   1,158 [2],[3],[8],[28],[35]   1,165 [5],[6],[10],[29],[36]          
Cost   2,258 [2],[3],[8],[28],[35]   2,258 [5],[6],[10],[29],[36]          
Investment, Identifier [Axis]: Eurofins Digital Testing International LUX Holding SARL, Senior Subordinated Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   0 [3],[8],[35]   0 [6],[10],[36]          
Cost   642 [3],[8],[35]   642 [6],[10],[36]          
Investment, Identifier [Axis]: Events Software BidCo Pty Ltd, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   1,340 [2],[3],[8],[11],[30]   1,336 [5],[6],[10],[12],[31]          
Cost   1,854 [2],[3],[8],[11],[30]   1,842 [5],[6],[10],[12],[31]          
Investment, Identifier [Axis]: Expert Institute Group Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [1],[2],[3],[11]   2,553              
Cost [1],[2],[3],[11]   2,554              
Investment, Identifier [Axis]: Expert Institute Group Inc., Revolver                  
Schedule of Investments [Line Items]                  
Fair Value [1],[2],[3],[11]   (14)              
Cost [1],[2],[3],[11]   (14)              
Investment, Identifier [Axis]: Express Wash Acquisition Company, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   6,259 [1],[2],[3]   5,955 [4],[5],[6]          
Cost   6,316 [1],[2],[3]   6,313 [4],[5],[6]          
Investment, Identifier [Axis]: Express Wash Acquisition Company, LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   136 [1],[2],[3],[11]   124 [4],[5],[6],[12]          
Cost   138 [1],[2],[3],[11]   138 [4],[5],[6],[12]          
Investment, Identifier [Axis]: FL Hawk Intermediate Holdings, Inc. (f.k.a. Fineline Technologies, Inc.), First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [4],[5],[6]       11,950          
Cost [4],[5],[6]       11,995          
Investment, Identifier [Axis]: FL Hawk Intermediate Holdings, Inc. (f/k/a Fineline Technologies, Inc.), First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [1],[2],[3]   11,998              
Cost [1],[2],[3]   11,966              
Investment, Identifier [Axis]: FSS Buyer LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   4,728 [2],[3],[20]   4,740 [5],[6],[21]          
Cost   4,681 [2],[3],[20]   4,690 [5],[6],[21]          
Investment, Identifier [Axis]: FSS Buyer LLC, LP Interest                  
Schedule of Investments [Line Items]                  
Fair Value   17 [3]   17 [6]          
Cost   12 [3]   12 [6]          
Investment, Identifier [Axis]: FSS Buyer LLC, LP Units                  
Schedule of Investments [Line Items]                  
Fair Value   74 [3],[13]   74 [6],[14]          
Cost   51 [3],[13]   51 [6],[14]          
Investment, Identifier [Axis]: Faraday, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   1,633 [2],[3],[8],[17]   1,552 [5],[6],[10],[12],[18]          
Cost   1,626 [2],[3],[8],[17]   1,600 [5],[6],[10],[12],[18]          
Investment, Identifier [Axis]: Ferrellgas L.P., Opco Preferred Units                  
Schedule of Investments [Line Items]                  
Fair Value   2,799 [3]   2,799 [6]          
Cost   2,799 [3]   2,799 [6]          
Investment, Identifier [Axis]: FinThrive Software Intermediate Holdings Inc., Preferred Stock                  
Schedule of Investments [Line Items]                  
Fair Value   5,944 [3]   5,608 [6]          
Cost   9,830 [3]   9,830 [6]          
Investment, Identifier [Axis]: Finaxy Holding, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   3,994 [2],[3],[8],[25]   3,872 [5],[6],[10],[24]          
Cost   3,937 [2],[3],[8],[25]   3,935 [5],[6],[10],[24]          
Investment, Identifier [Axis]: Finexvet, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   4,848 [2],[3],[8],[25]   4,613 [5],[6],[10],[24]          
Cost   4,877 [2],[3],[8],[25]   4,872 [5],[6],[10],[24]          
Investment, Identifier [Axis]: FitzMark Buyer, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   4,119 [2],[3],[20]   4,128 [5],[6],[21]          
Cost   4,094 [2],[3],[20]   4,101 [5],[6],[21]          
Investment, Identifier [Axis]: Five Star Holding LLC, LLC Units                  
Schedule of Investments [Line Items]                  
Fair Value   564 [3],[13]   564 [6],[14]          
Cost   967 [3],[13]   967 [6],[14]          
Investment, Identifier [Axis]: Five Star Holding LLC, Second Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   13,268 [1],[2],[3]   13,198 [4],[5],[6]          
Cost   13,498 [1],[2],[3]   13,489 [4],[5],[6]          
Investment, Identifier [Axis]: Flexential Issuer, LLC, Structured Secured Note - Class C                  
Schedule of Investments [Line Items]                  
Fair Value   15,862   15,339          
Cost   14,891   14,885          
Investment, Identifier [Axis]: Flywheel Re Segregated Portfolio 2022-4, Preferred Stock                  
Schedule of Investments [Line Items]                  
Fair Value   4,497 [3],[8],[13]   3,875 [6],[10],[14]          
Cost   2,828 [3],[8],[13]   2,828 [6],[10],[14]          
Investment, Identifier [Axis]: Footco 40 Limited, First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value   226 [2],[3],[8],[17]   217 [5],[6],[10],[18]          
Cost   223 [2],[3],[8],[17]   223 [5],[6],[10],[18]          
Investment, Identifier [Axis]: Footco 40 Limited, First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value   1,639 [2],[3],[8],[11],[27]   1,588 [5],[6],[10],[12],[26]          
Cost   1,640 [2],[3],[8],[11],[27]   1,638 [5],[6],[10],[12],[26]          
Investment, Identifier [Axis]: Forest Buyer, LLC, Class A LLC Units                  
Schedule of Investments [Line Items]                  
Fair Value   132 [3]   130 [6],[14]          
Cost   122 [3]   122 [6],[14]          
Investment, Identifier [Axis]: Forest Buyer, LLC, Class B LLC Units                  
Schedule of Investments [Line Items]                  
Fair Value   136 [3],[13]   124 [6],[14]          
Cost   0 [3],[13]   0 [6],[14]          
Investment, Identifier [Axis]: Forest Buyer, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   6,107 [1],[2],[3]   6,091 [4],[5],[6]          
Cost   6,026 [1],[2],[3]   6,049 [4],[5],[6]          
Investment, Identifier [Axis]: Forest Buyer, LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   0 [1],[2],[3],[11]   (2) [4],[5],[6],[12]          
Cost   (6) [1],[2],[3],[11]   (6) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Fortis Payment Systems, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [4],[5],[6],[12]       8,815          
Cost [4],[5],[6],[12]       8,841          
Investment, Identifier [Axis]: Fortis Payment Systems, LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value [4],[5],[6],[12]       (9)          
Cost [4],[5],[6],[12]       (7)          
Investment, Identifier [Axis]: FragilePak LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   4,532 [1],[2],[3]   4,544 [4],[5],[6]          
Cost   4,481 [1],[2],[3]   4,487 [4],[5],[6]          
Investment, Identifier [Axis]: FragilePak LLC, Partnership Units                  
Schedule of Investments [Line Items]                  
Fair Value   680 [3],[13]   767 [6],[14]          
Cost   938 [3],[13]   938 [6],[14]          
Investment, Identifier [Axis]: GB Eagle Buyer, Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   9,148 [1],[2],[3],[11]   9,129 [4],[5],[6],[12]          
Cost   9,024 [1],[2],[3],[11]   9,038 [4],[5],[6],[12]          
Investment, Identifier [Axis]: GB Eagle Buyer, Inc., Partnership Units                  
Schedule of Investments [Line Items]                  
Fair Value   1,419 [3]   1,350 [6]          
Cost   687 [3]   687 [6]          
Investment, Identifier [Axis]: GB Eagle Buyer, Inc., Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   276 [1],[2],[3],[11]   (23) [4],[5],[6],[12]          
Cost   246 [1],[2],[3],[11]   (46) [4],[5],[6],[12]          
Investment, Identifier [Axis]: GCDL LLC, Common Stock                  
Schedule of Investments [Line Items]                  
Fair Value   314 [3],[13]   243 [6],[14]          
Cost   243 [3],[13]   243 [6],[14]          
Investment, Identifier [Axis]: GCDL LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   529 [1],[2],[3],[11]   529 [4],[5],[6],[12]          
Cost   529 [1],[2],[3],[11]   529 [4],[5],[6],[12]          
Investment, Identifier [Axis]: GCDL LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   (2) [1],[2],[3],[11]   (2) [4],[5],[6],[12]          
Cost   (2) [1],[2],[3],[11]   (2) [4],[5],[6],[12]          
Investment, Identifier [Axis]: GPNZ II GmbH, Common Stock                  
Schedule of Investments [Line Items]                  
Fair Value   0 [3],[8],[13]   0 [6],[10],[14]          
Cost   0 [3],[8],[13]   0 [6],[10],[14]          
Investment, Identifier [Axis]: GPNZ II GmbH, First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value   294 [3],[8]   271 [6],[10]          
Cost   296 [3],[8]   285 [6],[10]          
Investment, Identifier [Axis]: GPNZ II GmbH, First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value   86 [3],[8]   33 [5],[6],[10],[12]          
Cost   85 [3],[8]   34 [5],[6],[10],[12]          
Investment, Identifier [Axis]: GPNZ II GmbH, First Lien Senior Secured Term Loan 3                  
Schedule of Investments [Line Items]                  
Fair Value   0 [3],[8],[11]   189 [5],[6],[10],[33],[36]          
Cost   0 [3],[8],[11]   446 [5],[6],[10],[33],[36]          
Investment, Identifier [Axis]: GPNZ II GmbH, First Lien Senior Secured Term Loan 4                  
Schedule of Investments [Line Items]                  
Fair Value [2],[3],[8],[32],[35]   24              
Cost [2],[3],[8],[32],[35]   446              
Investment, Identifier [Axis]: Global Academic Group Limited, First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value   2,520 [2],[3],[8],[30]   2,284 [5],[6],[10],[31]          
Cost   2,758 [2],[3],[8],[30]   2,530 [5],[6],[10],[31]          
Investment, Identifier [Axis]: Global Academic Group Limited, First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value   4,043 [2],[3],[8],[11],[47]   4,000 [5],[6],[10],[12],[48]          
Cost   4,400 [2],[3],[8],[11],[47]   4,389 [5],[6],[10],[12],[48]          
Investment, Identifier [Axis]: Gojo Industries, Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   12,902 [2],[3],[20]   12,883 [4],[5],[6]          
Cost   12,889 [2],[3],[20]   12,874 [4],[5],[6]          
Investment, Identifier [Axis]: Graphpad Software, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   9,487 [1],[2],[3],[11]   9,499 [4],[5],[6],[12]          
Cost   9,435 [1],[2],[3],[11]   9,457 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Graphpad Software, LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   0 [1],[2],[3],[11]   (1) [4],[5],[6],[12]          
Cost   (4) [1],[2],[3],[11]   (4) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Greenhill II BV, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   1,006 [2],[3],[8],[17]   936 [5],[6],[10],[12],[18]          
Cost   936 [2],[3],[8],[17]   907 [5],[6],[10],[12],[18]          
Investment, Identifier [Axis]: Groupe Guemas, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   4,964 [2],[3],[8],[25]   4,747 [5],[6],[10],[24]          
Cost   4,824 [2],[3],[8],[25]   4,821 [5],[6],[10],[24]          
Investment, Identifier [Axis]: Groupe Product Life, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [5],[6],[10],[12],[18]       871          
Cost [5],[6],[10],[12],[18]       874          
Investment, Identifier [Axis]: Groupe Product Life, First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value [2],[3],[8],[17]   802              
Cost [2],[3],[8],[17]   763              
Investment, Identifier [Axis]: Groupe Product Life, First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value [2],[3],[8],[11],[17]   166              
Cost [2],[3],[8],[11],[17]   163              
Investment, Identifier [Axis]: HEKA Invest, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   5,060 [2],[3],[8],[11],[17]   4,850 [5],[6],[10],[12],[18]          
Cost   4,501 [2],[3],[8],[11],[17]   4,497 [5],[6],[10],[12],[18]          
Investment, Identifier [Axis]: HS Advisory Buyer LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [1],[2],[3],[11]   1,257              
Cost [1],[2],[3],[11]   1,257              
Investment, Identifier [Axis]: HS Advisory Buyer LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value [1],[2],[3],[11]   (9)              
Cost [1],[2],[3],[11]   (9)              
Investment, Identifier [Axis]: HSL Compliance, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [2],[3],[8],[11],[27]   3,692              
Cost [2],[3],[8],[11],[27]   3,686              
Investment, Identifier [Axis]: HTI Technology & Industries, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   10,237 [2],[3],[11],[22]   10,421 [4],[5],[6],[12]          
Cost   11,071 [2],[3],[11],[22]   11,052 [4],[5],[6],[12]          
Investment, Identifier [Axis]: HTI Technology & Industries, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   (89) [2],[3],[11],[22]   (70) [4],[5],[6],[12]          
Cost   (2) [2],[3],[11],[22]   (4) [4],[5],[6],[12]          
Investment, Identifier [Axis]: HW Holdco, LLC (Hanley Wood LLC), First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   10,831 [1],[2],[3]   11,081 [4],[5],[6]          
Cost   10,810 [1],[2],[3]   11,055 [4],[5],[6]          
Investment, Identifier [Axis]: Haystack Holdings LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [1],[2],[3],[11]   9,764              
Cost [1],[2],[3],[11]   9,772              
Investment, Identifier [Axis]: Haystack Holdings LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value [1],[2],[3],[11]   (14)              
Cost [1],[2],[3],[11]   (13)              
Investment, Identifier [Axis]: HeartHealth Bidco Pty Ltd, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   601 [2],[3],[8],[11],[30]   602 [5],[6],[10],[31]          
Cost   705 [2],[3],[8],[11],[30]   704 [5],[6],[10],[31]          
Investment, Identifier [Axis]: Heartland Veterinary Partners, LLC, Subordinated Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   13,306 [3]   12,865 [6]          
Cost   14,235 [3]   13,840 [6]          
Investment, Identifier [Axis]: Heavy Construction Systems Specialists, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   7,202 [1],[2],[3]   7,221 [4],[5],[6]          
Cost   7,132 [1],[2],[3]   7,144 [4],[5],[6]          
Investment, Identifier [Axis]: Heavy Construction Systems Specialists, LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   0 [1],[2],[3],[11]   0 [4],[5],[6],[12]          
Cost   (23) [1],[2],[3],[11]   (26) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Heilbron (f/k/a Sucsez (Bolt Bidco B.V.)), First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   3,272 [2],[3],[8],[32]   3,042 [5],[6],[10],[24]          
Cost   3,676 [2],[3],[8],[32]   3,676 [5],[6],[10],[24]          
Investment, Identifier [Axis]: HemaSource, Inc., Common Stock                  
Schedule of Investments [Line Items]                  
Fair Value   128 [3],[13]   124 [6],[14]          
Cost   101 [3],[13]   101 [6],[14]          
Investment, Identifier [Axis]: HemaSource, Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   6,861 [2],[3],[20]   7,267 [5],[6],[21]          
Cost   6,724 [2],[3],[20]   7,116 [5],[6],[21]          
Investment, Identifier [Axis]: HemaSource, Inc., Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   0 [2],[3],[11],[20]   0 [5],[6],[12],[21]          
Cost   (33) [2],[3],[11],[20]   (35) [5],[6],[12],[21]          
Investment, Identifier [Axis]: Herbalife Ltd., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   3,292 [2],[8],[20]   3,294 [5],[10],[21]          
Cost   3,101 [2],[8],[20]   3,130 [5],[10],[21]          
Investment, Identifier [Axis]: Home Care Assistance, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   3,272 [2],[3],[22]   3,524 [4],[5],[6]          
Cost   3,680 [2],[3],[22]   3,677 [4],[5],[6]          
Investment, Identifier [Axis]: HomeX Services Group LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   1,494 [1],[2],[3],[11]   1,477 [4],[5],[6],[12]          
Cost   1,461 [1],[2],[3],[11]   1,463 [4],[5],[6],[12]          
Investment, Identifier [Axis]: HomeX Services Group LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   0 [1],[2],[3],[11]   (3) [4],[5],[6],[12]          
Cost   (5) [1],[2],[3],[11]   (6) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Honour Lane Logistics Holdings Limited, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   6,667 [2],[3],[8],[22]   6,645 [5],[6],[10],[23]          
Cost   6,550 [2],[3],[8],[22]   6,542 [5],[6],[10],[23]          
Investment, Identifier [Axis]: Hydratech Holdings, Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   8,971 [1],[2],[3],[11]   7,413 [4],[5],[6],[12]          
Cost   8,968 [1],[2],[3],[11]   7,413 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Hydratech Holdings, Inc., Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   829 [1],[2],[3],[11]   265 [4],[5],[6],[12]          
Cost   828 [1],[2],[3],[11]   265 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Hygie 31 Holding, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   1,570 [2],[3],[8],[25]   1,502 [5],[6],[10],[24]          
Cost   1,379 [2],[3],[8],[25]   1,378 [5],[6],[10],[24]          
Investment, Identifier [Axis]: Hylan Datacom & Electrical LLC, Common Stock                  
Schedule of Investments [Line Items]                  
Fair Value [46]       0 2,013        
Investment, Identifier [Axis]: Hylan Datacom & Electrical LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [46]       0 3,917        
Investment, Identifier [Axis]: Hylan Datacom & Electrical LLC, Second Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [46]       0 4,519        
Investment, Identifier [Axis]: ICREDITWORKS LLC, Preferred Stock                  
Schedule of Investments [Line Items]                  
Fair Value [3]   10,208              
Cost [3]   10,208              
Investment, Identifier [Axis]: ICREDITWORKS LLC, Warrants                  
Schedule of Investments [Line Items]                  
Fair Value [3],[13]   0              
Cost [3],[13]   0              
Investment, Identifier [Axis]: IM Square, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   2,648 [2],[3],[8],[17]   2,533 [5],[6],[10],[18]          
Cost   2,962 [2],[3],[8],[17]   2,960 [5],[6],[10],[18]          
Investment, Identifier [Axis]: ISTO Technologies II, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   6,718 [1],[2],[3]   6,706 [5],[6],[23]          
Cost   6,597 [1],[2],[3]   6,598 [5],[6],[23]          
Investment, Identifier [Axis]: ISTO Technologies II, LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   0 [1],[2],[3],[11]   (2) [5],[6],[12],[23]          
Cost   (13) [1],[2],[3],[11]   (14) [5],[6],[12],[23]          
Investment, Identifier [Axis]: ITI Intermodal, Inc., Common Stock                  
Schedule of Investments [Line Items]                  
Fair Value   979 [3],[13]   915 [6],[14]          
Cost   750 [3],[13]   750 [6],[14]          
Investment, Identifier [Axis]: ITI Intermodal, Inc., First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value   799 [1],[2],[3]   800 [5],[6],[23]          
Cost   792 [1],[2],[3]   793 [5],[6],[23]          
Investment, Identifier [Axis]: ITI Intermodal, Inc., First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value   12,047 [1],[2],[3]   12,079 [5],[6],[23]          
Cost   11,836 [1],[2],[3]   11,847 [5],[6],[23]          
Investment, Identifier [Axis]: ITI Intermodal, Inc., Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   226 [1],[2],[3],[11]   225 [5],[6],[12],[23]          
Cost   205 [1],[2],[3],[11]   203 [5],[6],[12],[23]          
Investment, Identifier [Axis]: Ice House America, L.L.C., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   4,493 [1],[2],[3],[11]   4,482 [4],[5],[6],[12]          
Cost   4,487 [1],[2],[3],[11]   4,483 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Ice House America, L.L.C., LLC Units                  
Schedule of Investments [Line Items]                  
Fair Value   281 [3],[13]   316 [6],[14]          
Cost   289 [3],[13]   283 [6],[14]          
Investment, Identifier [Axis]: Ice House America, L.L.C., Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   313 [1],[2],[3],[11]   186 [4],[5],[6],[12]          
Cost   313 [1],[2],[3],[11]   186 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Infoniqa Holdings GmbH, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   2,839 [2],[3],[8],[17]   2,721 [5],[6],[10],[24]          
Cost   2,925 [2],[3],[8],[17]   2,923 [5],[6],[10],[24]          
Investment, Identifier [Axis]: Innovad Group II BV, First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value   6,658 [2],[3],[8],[17]   6,383 [5],[6],[10],[24]          
Cost   7,122 [2],[3],[8],[17]   7,116 [5],[6],[10],[24]          
Investment, Identifier [Axis]: Innovad Group II BV, First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value   1,036 [2],[3],[8],[49]   1,012 [5],[6],[10],[50]          
Cost   1,019 [2],[3],[8],[49]   1,019 [5],[6],[10],[50]          
Investment, Identifier [Axis]: Innovative XCessories & Services, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [4],[5],[16]       2,746          
Cost [4],[5],[16]       2,802          
Investment, Identifier [Axis]: Interstellar Group B.V., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   1,603 [2],[3],[8],[11],[17]   1,509 [5],[6],[10],[12],[18]          
Cost   1,625 [2],[3],[8],[11],[17]   1,594 [5],[6],[10],[12],[18]          
Investment, Identifier [Axis]: InvoCare Limited, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   1,980 [2],[3],[8],[11],[30]   1,963 [5],[6],[10],[12],[31]          
Cost   2,064 [2],[3],[8],[11],[30]   2,062 [5],[6],[10],[12],[31]          
Investment, Identifier [Axis]: Isagenix International, LLC, Common Stock                  
Schedule of Investments [Line Items]                  
Fair Value   0 [3],[13],[15]   0 [6],[14],[16]          
Cost   0 [3],[13],[15]   0 [6],[14],[16]          
Investment, Identifier [Axis]: Isagenix International, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   181 [1],[2],[3],[15]   160 [4],[5],[6],[16]          
Cost   702 [1],[2],[3],[15]   668 [4],[5],[6],[16]          
Investment, Identifier [Axis]: Isolstar Holding NV (IPCOM), First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   5,359 [2],[3],[8],[17]   5,075 [5],[6],[10],[18]          
Cost   4,841 [2],[3],[8],[17]   4,836 [5],[6],[10],[18]          
Investment, Identifier [Axis]: Ivanti Software, Inc., Second Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   2,850 [1],[2],[15]   3,285 [4],[5],[16]          
Cost   5,989 [1],[2],[15]   5,989 [4],[5],[16]          
Investment, Identifier [Axis]: JF Acquisition, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   3,730 [1],[2],[3]   3,736 [4],[5],[6]          
Cost   3,705 [1],[2],[3]   3,709 [4],[5],[6]          
Investment, Identifier [Axis]: Jade Bidco Limited (Jane's), First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value   1,162 [2],[3],[8],[25]   1,112 [5],[6],[10],[24]          
Cost   1,155 [2],[3],[8],[25]   1,155 [5],[6],[10],[24]          
Investment, Identifier [Axis]: Jade Bidco Limited (Jane's), First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value   6,526 [2],[3],[8],[22]   6,579 [5],[6],[10],[23]          
Cost   6,442 [2],[3],[8],[22]   6,498 [5],[6],[10],[23]          
Investment, Identifier [Axis]: JetBlue 2019-1 Class B Pass Through Trust, Structured Secured Note - Class B                  
Schedule of Investments [Line Items]                  
Fair Value   2,489   2,520          
Cost   2,495   2,495          
Investment, Identifier [Axis]: Jocassee Partners LLC                  
Schedule of Investments [Line Items]                  
Total contributed capital   35,000   35,000          
Investment, Identifier [Axis]: Jocassee Partners LLC, Member Interest                  
Schedule of Investments [Line Items]                  
Fair Value [10],[12],[51]       40,761          
Cost [10],[12],[51]       35,158          
Investment, Identifier [Axis]: Jocassee Partners LLC, Member Interest                  
Schedule of Investments [Line Items]                  
Fair Value   39,825 [8],[52]   40,761 41,053        
Cost [8],[52]   35,158              
Investment, Identifier [Axis]: Jon Bidco Limited, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   3,760 [2],[3],[8],[11],[47]   3,720 [5],[6],[10],[12],[48]          
Cost   4,324 [2],[3],[8],[11],[47]   4,430 [5],[6],[10],[12],[48]          
Investment, Identifier [Axis]: Jones Fish Hatcheries & Distributors LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   3,481 [2],[3],[22]   3,481 [4],[5],[6]          
Cost   3,437 [2],[3],[22]   3,434 [4],[5],[6]          
Investment, Identifier [Axis]: Jones Fish Hatcheries & Distributors LLC, LLC Units                  
Schedule of Investments [Line Items]                  
Fair Value   421 [3]   372 [6]          
Cost   107 [3]   107 [6]          
Investment, Identifier [Axis]: Jones Fish Hatcheries & Distributors LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   251 [2],[3],[11],[22]   0 [4],[5],[6],[12]          
Cost   247 [2],[3],[11],[22]   (4) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Keystone Bidco B.V., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   847 [2],[3],[8],[11],[25]   677 [5],[6],[10],[12],[18]          
Cost   857 [2],[3],[8],[11],[25]   728 [5],[6],[10],[12],[18]          
Investment, Identifier [Axis]: Keystone Bidco B.V., Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   19 [2],[3],[8],[11],[25]   18 [5],[6],[10],[12],[18]          
Cost   18 [2],[3],[8],[11],[25]   18 [5],[6],[10],[12],[18]          
Investment, Identifier [Axis]: Kid Distro Holdings, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   13,122 [1],[2],[3]   13,156 [4],[5],[6]          
Cost   13,036 [1],[2],[3]   13,063 [4],[5],[6]          
Investment, Identifier [Axis]: Kid Distro Holdings, LLC, LLC Units                  
Schedule of Investments [Line Items]                  
Fair Value   784 [3],[13]   772 [6],[14]          
Cost   638 [3],[13]   638 [6],[14]          
Investment, Identifier [Axis]: Lambir Bidco Limited, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   2,013 [2],[3],[8],[11],[25]   1,952 [5],[6],[10],[12],[24]          
Cost   2,165 [2],[3],[8],[11],[25]   2,159 [5],[6],[10],[12],[24]          
Investment, Identifier [Axis]: Lambir Bidco Limited, Second Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   1,765 [3],[8]   1,721 [6],[10]          
Cost   1,948 [3],[8]   1,947 [6],[10]          
Investment, Identifier [Axis]: Lattice Group Holdings Bidco Limited, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   734 [2],[3],[8],[11],[22]   687 [5],[6],[10],[12],[23]          
Cost   723 [2],[3],[8],[11],[22]   711 [5],[6],[10],[12],[23]          
Investment, Identifier [Axis]: Lattice Group Holdings Bidco Limited, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   0 [2],[3],[8],[11],[22]   (1) [5],[6],[10],[12],[23]          
Cost   0 [2],[3],[8],[11],[22]   (1) [5],[6],[10],[12],[23]          
Investment, Identifier [Axis]: LeadsOnline, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   10,033 [1],[2],[3]   10,029 [4],[5],[6]          
Cost   9,950 [1],[2],[3]   9,968 [4],[5],[6]          
Investment, Identifier [Axis]: LeadsOnline, LLC, LLC Units                  
Schedule of Investments [Line Items]                  
Fair Value   210 [3]   180 [6]          
Cost   85 [3]   85 [6]          
Investment, Identifier [Axis]: LeadsOnline, LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   (3) [1],[2],[3],[11]   (10) [4],[5],[6],[12]          
Cost   (22) [1],[2],[3],[11]   (24) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Learfield Communications, LLC, Common Stock                  
Schedule of Investments [Line Items]                  
Fair Value   4,195 [13]   4,085 [6],[14]          
Cost   1,921 [13]   1,921 [6],[14]          
Investment, Identifier [Axis]: Learfield Communications, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   5,460 [2],[20]   5,520 [5],[21]          
Cost   5,472 [2],[20]   5,486 [5],[21]          
Investment, Identifier [Axis]: Legal Solutions Holdings, Senior Subordinated Loan                  
Schedule of Investments [Line Items]                  
Fair Value [6],[36],[53]       0          
Cost [6],[36],[53]       10,128          
Investment, Identifier [Axis]: Lifestyle Intermediate II, LLC, Common Stock                  
Schedule of Investments [Line Items]                  
Fair Value [3],[13]   0              
Cost [3],[13]   0              
Investment, Identifier [Axis]: Lifestyle Intermediate II, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   2,796 [1],[2],[3],[15]   2,812 [4],[5],[6],[16]          
Cost   2,951 [1],[2],[3],[15]   2,992 [4],[5],[6],[16]          
Investment, Identifier [Axis]: Long Term Care Group, Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   8,169 [1],[2],[3]   7,839 [4],[5],[6]          
Cost   8,746 [1],[2],[3]   8,676 [4],[5],[6]          
Investment, Identifier [Axis]: M-Personal Protection Management GMBH (f.k.a INOS 19-090 GmbH), First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [5],[6],[10],[18]       10,829          
Cost [5],[6],[10],[18]       11,395          
Investment, Identifier [Axis]: M-Personal Protection Management GMBH, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [2],[3],[8],[17]   11,436              
Cost [2],[3],[8],[17]   11,415              
Investment, Identifier [Axis]: MB Purchaser, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   2,591 [1],[2],[3],[11]   2,591 [5],[6],[12],[21]          
Cost   2,553 [1],[2],[3],[11]   2,550 [5],[6],[12],[21]          
Investment, Identifier [Axis]: MB Purchaser, LLC, LLC Units                  
Schedule of Investments [Line Items]                  
Fair Value   78 [3],[13]   82 [6],[14]          
Cost   68 [3],[13]   68 [6],[14]          
Investment, Identifier [Axis]: MB Purchaser, LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   (2) [1],[2],[3],[11]   (2) [5],[6],[12],[21]          
Cost   (5) [1],[2],[3],[11]   (5) [5],[6],[12],[21]          
Investment, Identifier [Axis]: MC Group Ventures Corporation, First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value   4,926 [1],[2],[3],[11]   4,899 [5],[6],[12],[21]          
Cost   5,013 [1],[2],[3],[11]   5,016 [5],[6],[12],[21]          
Investment, Identifier [Axis]: MC Group Ventures Corporation, First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value   4,043 [1],[2],[3],[11]   4,036 [5],[6],[12],[23]          
Cost   4,056 [1],[2],[3],[11]   4,062 [5],[6],[12],[23]          
Investment, Identifier [Axis]: MC Group Ventures Corporation, Partnership Units                  
Schedule of Investments [Line Items]                  
Fair Value   681 [3],[13]   681 [6],[14]          
Cost   747 [3],[13]   747 [6],[14]          
Investment, Identifier [Axis]: MI OpCo Holdings, Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [5],[21]       6,320          
Cost [5],[21]       5,722          
Investment, Identifier [Axis]: MNS Buyer, Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   660 [2],[3],[20]   662 [4],[5],[6]          
Cost   654 [2],[3],[20]   656 [4],[5],[6]          
Investment, Identifier [Axis]: MNS Buyer, Inc., Partnership Units                  
Schedule of Investments [Line Items]                  
Fair Value   108 [3],[13]   106 [6],[14]          
Cost   77 [3],[13]   77 [6],[14]          
Investment, Identifier [Axis]: MSI Express Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [1],[2],[3],[11]   5,470              
Cost [1],[2],[3],[11]   5,471              
Investment, Identifier [Axis]: MSI Express Inc., Revolver                  
Schedule of Investments [Line Items]                  
Fair Value [1],[2],[3],[11]   624              
Cost [1],[2],[3],[11]   624              
Investment, Identifier [Axis]: MVC Automotive Group GmbH, Bridge Loan                  
Schedule of Investments [Line Items]                  
Fair Value [40]       0 9,762        
Investment, Identifier [Axis]: MVC Automotive Group GmbH, Common Equity Interest                  
Schedule of Investments [Line Items]                  
Fair Value [6],[10],[14],[53]       13,741          
Cost [6],[10],[14],[53]       19,173          
Investment, Identifier [Axis]: MVC Automotive Group GmbH, Common Equity Interest                  
Schedule of Investments [Line Items]                  
Fair Value   13,944 [38]   13,741 [38] 15,430 [40]        
Investment, Identifier [Axis]: MVC Automotive Group Gmbh, Common Equity Interest                  
Schedule of Investments [Line Items]                  
Fair Value [3],[8],[13],[54]   13,944              
Cost [3],[8],[13],[54]   19,173              
Investment, Identifier [Axis]: MVC Private Equity Fund LP, General Partnership Interest                  
Schedule of Investments [Line Items]                  
Fair Value   0   0 [10],[14],[53] 24        
Cost [10],[14],[53]       184          
Investment, Identifier [Axis]: MVC Private Equity Fund LP, Limited Partnership Interest                  
Schedule of Investments [Line Items]                  
Fair Value   0   11 [10],[14],[53] 981        
Cost [10],[14],[53]       7,282          
Investment, Identifier [Axis]: Magnetite XIX, Limited, Subordinated Notes                  
Schedule of Investments [Line Items]                  
Fair Value   5,238 [1],[2],[8]   10,500 [4],[6],[10],[16]          
Cost   5,250 [1],[2],[8]   10,357 [4],[6],[10],[16]          
Investment, Identifier [Axis]: Marmoutier Holding B.V., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   (24) [2],[3],[8],[11],[25],[35]   146 [5],[6],[10],[12],[24],[36]          
Cost   2,415 [2],[3],[8],[11],[25],[35]   2,415 [5],[6],[10],[12],[24],[36]          
Investment, Identifier [Axis]: Marmoutier Holding B.V., Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   (13) [2],[3],[8],[11],[25],[35]   (53) [5],[6],[10],[12],[24],[36]          
Cost   104 [2],[3],[8],[11],[25],[35]   104 [5],[6],[10],[12],[24],[36]          
Investment, Identifier [Axis]: Marmoutier Holding B.V., Super Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   193 [3],[8],[35]   185 [5],[6],[10],[36]          
Cost   194 [3],[8],[35]   194 [5],[6],[10],[36]          
Investment, Identifier [Axis]: Media Recovery, Inc. (SpotSee), First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value   1,749 [1],[2],[3]   1,747 [4],[5],[6]          
Cost   1,747 [1],[2],[3]   1,746 [4],[5],[6]          
Investment, Identifier [Axis]: Media Recovery, Inc. (SpotSee), First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value   3,607 [2],[3],[41]   3,775 [5],[6],[42]          
Cost   3,743 [2],[3],[41]   4,039 [5],[6],[42]          
Investment, Identifier [Axis]: Media Recovery, Inc. (SpotSee), Revolver 1                  
Schedule of Investments [Line Items]                  
Fair Value   33 [1],[2],[3],[11]   (9) [4],[5],[6],[12]          
Cost   32 [1],[2],[3],[11]   (9) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Media Recovery, Inc. (SpotSee), Revolver 2                  
Schedule of Investments [Line Items]                  
Fair Value   (10) [2],[3],[11],[41]   (10) [5],[6],[12],[42]          
Cost   (11) [2],[3],[11],[41]   (11) [5],[6],[12],[42]          
Investment, Identifier [Axis]: Median B.V., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   9,305 [2],[8],[27]   8,966 [5],[10],[29]          
Cost   9,922 [2],[8],[27]   9,907 [5],[10],[29]          
Investment, Identifier [Axis]: Medical Solutions Parent Holdings, Inc., Second Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   2,211 [1],[2]   2,211 [4],[5]          
Cost   4,395 [1],[2]   4,394 [4],[5]          
Investment, Identifier [Axis]: Megawatt Acquisitionco, Inc., Common Stock                  
Schedule of Investments [Line Items]                  
Fair Value   0 [3],[13]   0 [6],[14]          
Cost   21 [3],[13]   21 [6],[14]          
Investment, Identifier [Axis]: Megawatt Acquisitionco, Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   3,901 [1],[2],[3]   3,648 [4],[5],[6]          
Cost   4,081 [1],[2],[3]   4,088 [4],[5],[6]          
Investment, Identifier [Axis]: Megawatt Acquisitionco, Inc., Preferred Stock                  
Schedule of Investments [Line Items]                  
Fair Value   92 [3],[13]   46 [6],[14]          
Cost   184 [3],[13]   184 [6],[14]          
Investment, Identifier [Axis]: Megawatt Acquisitionco, Inc., Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   150 [1],[2],[3],[11]   108 [4],[5],[6],[12]          
Cost   179 [1],[2],[3],[11]   178 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Mercell Holding AS, Class A Units                  
Schedule of Investments [Line Items]                  
Fair Value   138 [3],[8],[13]   125 [6],[10],[14]          
Cost   111 [3],[8],[13]   111 [6],[10],[14]          
Investment, Identifier [Axis]: Mercell Holding AS, Class B Units                  
Schedule of Investments [Line Items]                  
Fair Value   26 [3],[8],[13]   21 [6],[10],[14]          
Cost   0 [3],[8],[13]   0 [6],[10],[14]          
Investment, Identifier [Axis]: Mercell Holding AS, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   2,972 [2],[3],[8],[11],[55]   2,750 [5],[6],[10],[12],[56]          
Cost   3,153 [2],[3],[8],[11],[55]   3,150 [5],[6],[10],[12],[56]          
Investment, Identifier [Axis]: Modern Star Holdings Bidco Pty Limited., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   6,933 [2],[3],[8],[11],[57]   7,008 [5],[6],[10],[12],[58]          
Cost   8,135 [2],[3],[8],[11],[57]   8,268 [5],[6],[10],[12],[58]          
Investment, Identifier [Axis]: Momentum Textiles, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [2],[3],[20]   7,255              
Cost [2],[3],[20]   7,255              
Investment, Identifier [Axis]: Momentum Textiles, LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value [2],[3],[11],[20]   (9)              
Cost [2],[3],[11],[20]   (9)              
Investment, Identifier [Axis]: Moonlight Bidco Limited, Common Stock                  
Schedule of Investments [Line Items]                  
Fair Value   198 [3],[8],[13]   182 [6],[10],[14]          
Cost   138 [3],[8],[13]   138 [6],[10],[14]          
Investment, Identifier [Axis]: Moonlight Bidco Limited, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   1,917 [2],[3],[8],[11],[27]   1,841 [5],[6],[10],[12],[26]          
Cost   1,886 [2],[3],[8],[11],[27]   1,884 [5],[6],[10],[12],[26]          
Investment, Identifier [Axis]: Murphy Midco Limited, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   1,638 [2],[3],[8],[28]   1,641 [5],[6],[10],[29]          
Cost   1,718 [2],[3],[8],[28]   1,716 [5],[6],[10],[29]          
Investment, Identifier [Axis]: Music Reports, Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   6,604 [1],[2],[3]   6,618 [4],[5],[6]          
Cost   6,876 [1],[2],[3]   6,868 [4],[5],[6]          
Investment, Identifier [Axis]: NAW Buyer LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   11,820 [1],[2],[3],[11]   11,850 [4],[5],[6],[12]          
Cost   11,476 [1],[2],[3],[11]   11,489 [4],[5],[6],[12]          
Investment, Identifier [Axis]: NAW Buyer LLC, LLC Units                  
Schedule of Investments [Line Items]                  
Fair Value   543 [3]   524 [6]          
Cost   473 [3]   473 [6]          
Investment, Identifier [Axis]: NAW Buyer LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   0 [1],[2],[3],[11]   0 [4],[5],[6],[12]          
Cost   (35) [1],[2],[3],[11]   (37) [4],[5],[6],[12]          
Investment, Identifier [Axis]: NF Holdco, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   6,267 [1],[2],[3]   6,283 [4],[5],[6]          
Cost   6,128 [1],[2],[3]   6,137 [4],[5],[6]          
Investment, Identifier [Axis]: NF Holdco, LLC, LLC Units                  
Schedule of Investments [Line Items]                  
Fair Value   448 [3],[13]   563 [6],[14]          
Cost   659 [3],[13]   659 [6],[14]          
Investment, Identifier [Axis]: NF Holdco, LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   276 [1],[2],[3],[11]   276 [4],[5],[6],[12]          
Cost   254 [1],[2],[3],[11]   253 [4],[5],[6],[12]          
Investment, Identifier [Axis]: NPM Investments 28 B.V., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   1,967 [2],[3],[8],[11],[17]   1,869 [5],[6],[10],[12],[18]          
Cost   1,743 [2],[3],[8],[11],[17]   1,741 [5],[6],[10],[12],[18]          
Investment, Identifier [Axis]: Napa Bidco Pty Ltd, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   12,540 [2],[3],[8],[30]   12,459 [5],[6],[10],[31]          
Cost   14,275 [2],[3],[8],[30]   14,257 [5],[6],[10],[31]          
Investment, Identifier [Axis]: Narda Acquisitionco., Inc., Class A Preferred Stock                  
Schedule of Investments [Line Items]                  
Fair Value   589 [3],[13]   578 [6],[14]          
Cost   459 [3],[13]   459 [6],[14]          
Investment, Identifier [Axis]: Narda Acquisitionco., Inc., Class B Common Stock                  
Schedule of Investments [Line Items]                  
Fair Value   677 [3],[13]   743 [6],[14]          
Cost   51 [3],[13]   51 [6],[14]          
Investment, Identifier [Axis]: Narda Acquisitionco., Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   5,061 [2],[3],[20]   5,074 [5],[6],[21]          
Cost   5,020 [2],[3],[20]   5,030 [5],[6],[21]          
Investment, Identifier [Axis]: Narda Acquisitionco., Inc., Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   0 [2],[3],[11],[20]   0 [5],[6],[12],[21]          
Cost   (10) [2],[3],[11],[20]   (11) [5],[6],[12],[21]          
Investment, Identifier [Axis]: Navia Benefit Solutions, Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   5,557 [2],[3],[20]   5,572 [5],[6],[21]          
Cost   5,510 [2],[3],[20]   5,518 [5],[6],[21]          
Investment, Identifier [Axis]: NeoxCo, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   2,583 [2],[3],[8],[25]   2,456 [5],[6],[10],[24]          
Cost   2,527 [2],[3],[8],[25]   2,525 [5],[6],[10],[24]          
Investment, Identifier [Axis]: Next Holdco, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   22,077 [1],[2],[3],[11]   7,320 [4],[5],[6],[12]          
Cost   22,055 [1],[2],[3],[11]   7,199 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Next Holdco, LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   (7) [1],[2],[3],[11]   0 [4],[5],[6],[12]          
Cost   (9) [1],[2],[3],[11]   (9) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Northstar Recycling, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   17,136 [1],[2],[3],[11]   16,910 [4],[5],[6],[12]          
Cost   16,881 [1],[2],[3],[11]   16,911 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Northstar Recycling, LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   0 [1],[2],[3],[11]   (44) [4],[5],[6],[12]          
Cost   (42) [1],[2],[3],[11]   (44) [4],[5],[6],[12]          
Investment, Identifier [Axis]: OA Buyer, Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [5],[6],[21]       8,268          
Cost [5],[6],[21]       8,223          
Investment, Identifier [Axis]: OA Buyer, Inc., First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value [2],[3],[20]   5,461              
Cost [2],[3],[20]   5,400              
Investment, Identifier [Axis]: OA Buyer, Inc., First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value [2],[3],[20]   2,819              
Cost [2],[3],[20]   2,807              
Investment, Identifier [Axis]: OA Buyer, Inc., Partnership Units                  
Schedule of Investments [Line Items]                  
Fair Value   827 [3],[13]   783 [6]          
Cost   211 [3],[13]   211 [6]          
Investment, Identifier [Axis]: OA Buyer, Inc., Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   0 [2],[3],[11],[20]   (5) [5],[6],[12],[21]          
Cost   (14) [2],[3],[11],[20]   (15) [5],[6],[12],[21]          
Investment, Identifier [Axis]: OAC Holdings I Corp, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   3,312 [1],[2],[3]   3,539 [5],[6],[21]          
Cost   3,274 [1],[2],[3]   3,496 [5],[6],[21]          
Investment, Identifier [Axis]: OAC Holdings I Corp, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   489 [1],[2],[3],[11]   0 [5],[6],[12],[21]          
Cost   475 [1],[2],[3],[11]   (15) [5],[6],[12],[21]          
Investment, Identifier [Axis]: OG III B.V., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [5],[6],[10],[18]       3,241          
Cost [5],[6],[10],[18]       3,695          
Investment, Identifier [Axis]: OG III B.V., First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value [2],[3],[8],[17]   2,098              
Cost [2],[3],[8],[17]   2,345              
Investment, Identifier [Axis]: OG III B.V., First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value [2],[3],[8],[17]   1,291              
Cost [2],[3],[8],[17]   1,353              
Investment, Identifier [Axis]: ORTEC INTERNATIONAL NEWCO B.V., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   973 [2],[3],[8],[17]   931 [5],[6],[10],[18]          
Cost   976 [2],[3],[8],[17]   976 [5],[6],[10],[18]          
Investment, Identifier [Axis]: OSP Hamilton Purchaser, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   13,896 [1],[2],[3],[11]   13,901 [4],[5],[6],[12]          
Cost   13,856 [1],[2],[3],[11]   13,874 [4],[5],[6],[12]          
Investment, Identifier [Axis]: OSP Hamilton Purchaser, LLC, LP Units                  
Schedule of Investments [Line Items]                  
Fair Value   195 [3]   151 [6]          
Cost   174 [3]   174 [6]          
Investment, Identifier [Axis]: OSP Hamilton Purchaser, LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   432 [1],[2],[3],[11]   430 [4],[5],[6],[12]          
Cost   428 [1],[2],[3],[11]   427 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Ocelot Holdco LLC, Common Stock                  
Schedule of Investments [Line Items]                  
Fair Value   903 [3],[13]   742 [6],[14]          
Cost   0 [3],[13]   0 [6],[14]          
Investment, Identifier [Axis]: Ocelot Holdco LLC, Preferred Stock                  
Schedule of Investments [Line Items]                  
Fair Value   2,963 [3]   2,873 [6]          
Cost   1,998 [3]   1,562 [6]          
Investment, Identifier [Axis]: Ocelot Holdco LLC, Super Senior Takeback Loan                  
Schedule of Investments [Line Items]                  
Fair Value   549 [2],[3]   549 [5],[6]          
Cost   549 [2],[3]   549 [5],[6]          
Investment, Identifier [Axis]: Ocelot Holdco LLC, Takeback Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [5],[6]       2,933          
Cost [5],[6]       2,933          
Investment, Identifier [Axis]: Ocelot Holdco LLC, Takeback Term loan                  
Schedule of Investments [Line Items]                  
Fair Value [2],[3]   2,933              
Cost [2],[3]   2,933              
Investment, Identifier [Axis]: Ocular Therapeutix, Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   4,849 [2],[3],[8],[20]   4,849 [5],[6],[10],[21]          
Cost   3,836 [2],[3],[8],[20]   3,832 [5],[6],[10],[21]          
Investment, Identifier [Axis]: Offen Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   3,678 [3],[15],[20]   3,681 [6],[16],[21]          
Cost   3,678 [3],[15],[20]   3,681 [6],[16],[21]          
Investment, Identifier [Axis]: Oracle Vision Bidco Limited, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   2,898 [2],[3],[8],[28]   2,802 [5],[6],[10],[29]          
Cost   3,178 [2],[3],[8],[28]   3,175 [5],[6],[10],[29]          
Investment, Identifier [Axis]: Origin Bidco Limited, First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value   314 [2],[3],[8],[17]   301 [5],[6],[10],[18]          
Cost   355 [2],[3],[8],[17]   355 [5],[6],[10],[18]          
Investment, Identifier [Axis]: Origin Bidco Limited, First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value   524 [1],[2],[3],[8]   522 [4],[5],[6],[10]          
Cost   526 [1],[2],[3],[8]   525 [4],[5],[6],[10]          
Investment, Identifier [Axis]: PDQ.Com Corporation, Class A-2 Partnership Units                  
Schedule of Investments [Line Items]                  
Fair Value   26 [3],[13]   42 [6],[14]          
Cost   14 [3],[13]   29 [6],[14]          
Investment, Identifier [Axis]: PDQ.Com Corporation, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   14,752 [1],[2],[3],[11]   14,514 [4],[5],[6],[12]          
Cost   14,775 [1],[2],[3],[11]   14,558 [4],[5],[6],[12]          
Investment, Identifier [Axis]: PSP Intermediate 4, LLC, First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value   883 [2],[3],[8],[11],[17]   844 [5],[6],[10],[12],[18]          
Cost   847 [2],[3],[8],[11],[17]   846 [5],[6],[10],[12],[18]          
Investment, Identifier [Axis]: PSP Intermediate 4, LLC, First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value   1,411 [1],[2],[3],[8]   1,408 [4],[5],[6],[10]          
Cost   1,395 [1],[2],[3],[8]   1,394 [4],[5],[6],[10]          
Investment, Identifier [Axis]: Panoche Energy Center LLC, First Lien Senior Secured Bond                  
Schedule of Investments [Line Items]                  
Fair Value   3,351 [3]   3,695 [6]          
Cost   3,159 [3]   3,458 [6]          
Investment, Identifier [Axis]: Pare SAS (SAS Maurice MARLE), First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value   2,667 [2],[3],[8],[17]   2,688 [5],[6],[10],[24]          
Cost   2,734 [2],[3],[8],[17]   2,873 [5],[6],[10],[24]          
Investment, Identifier [Axis]: Pare SAS (SAS Maurice MARLE), First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value   1,500 [1],[2],[3],[8]   1,500 [4],[5],[6],[10]          
Cost   1,500 [1],[2],[3],[8]   1,500 [4],[5],[6],[10]          
Investment, Identifier [Axis]: Parkview Dental Holdings LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [5],[6],[12],[21]       609          
Cost [5],[6],[12],[21]       608          
Investment, Identifier [Axis]: Parkview Dental Holdings LLC, First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value [2],[3],[11],[20]   25              
Cost [2],[3],[11],[20]   24              
Investment, Identifier [Axis]: Parkview Dental Holdings LLC, First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value [2],[3],[20]   588              
Cost [2],[3],[20]   585              
Investment, Identifier [Axis]: Parkview Dental Holdings LLC, LLC Units                  
Schedule of Investments [Line Items]                  
Fair Value   213 [3],[13]   263 [6],[14]          
Cost   298 [3],[13]   298 [6],[14]          
Investment, Identifier [Axis]: Parkview Dental Holdings LLC, Preferred Stock                  
Schedule of Investments [Line Items]                  
Fair Value [3]   37              
Cost [3]   12              
Investment, Identifier [Axis]: Patriot New Midco 1 Limited (Forensic Risk Alliance), First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value   1,945 [2],[3],[8],[17]   2,045 [5],[6],[10],[18]          
Cost   1,955 [2],[3],[8],[17]   2,140 [5],[6],[10],[18]          
Investment, Identifier [Axis]: Patriot New Midco 1 Limited (Forensic Risk Alliance), First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value   2,397 [1],[2],[3],[8]   2,628 [4],[5],[6],[10]          
Cost   2,387 [1],[2],[3],[8]   2,613 [4],[5],[6],[10]          
Investment, Identifier [Axis]: Perimeter Master Note Business Trust, Structured Secured Note - Class A                  
Schedule of Investments [Line Items]                  
Fair Value   179 [3],[8]   177 [6],[10]          
Cost   182 [3],[8]   182 [6],[10]          
Investment, Identifier [Axis]: Perimeter Master Note Business Trust, Structured Secured Note - Class B                  
Schedule of Investments [Line Items]                  
Fair Value   180 [3],[8]   178 [6],[10]          
Cost   182 [3],[8]   182 [6],[10]          
Investment, Identifier [Axis]: Perimeter Master Note Business Trust, Structured Secured Note - Class C                  
Schedule of Investments [Line Items]                  
Fair Value   180 [3],[8]   180 [6],[10]          
Cost   182 [3],[8]   182 [6],[10]          
Investment, Identifier [Axis]: Perimeter Master Note Business Trust, Structured Secured Note - Class D                  
Schedule of Investments [Line Items]                  
Fair Value   181 [3],[8]   178 [6],[10]          
Cost   182 [3],[8]   182 [6],[10]          
Investment, Identifier [Axis]: Perimeter Master Note Business Trust, Structured Secured Note - Class E                  
Schedule of Investments [Line Items]                  
Fair Value   9,263 [3],[8]   8,904 [6],[10]          
Cost   9,274 [3],[8]   9,274 [6],[10]          
Investment, Identifier [Axis]: Permaconn BidCo Pty Ltd, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   2,553 [2],[3],[8],[30]   2,537 [5],[6],[10],[31]          
Cost   2,712 [2],[3],[8],[30]   2,710 [5],[6],[10],[31]          
Investment, Identifier [Axis]: Polara Enterprises, L.L.C., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   954 [2],[3],[20]   957 [4],[5],[6]          
Cost   944 [2],[3],[20]   947 [4],[5],[6]          
Investment, Identifier [Axis]: Polara Enterprises, L.L.C., Partnership Units                  
Schedule of Investments [Line Items]                  
Fair Value   1,492 [3]   1,229 [6]          
Cost   741 [3]   741 [6]          
Investment, Identifier [Axis]: Polara Enterprises, L.L.C., Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   0 [2],[3],[11],[20]   0 [4],[5],[6],[12]          
Cost   (5) [2],[3],[11],[20]   (5) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Policy Services Company, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   51,038 [1],[2],[3]   52,940 [4],[5],[6]          
Cost   51,037 [1],[2],[3]   52,938 [4],[5],[6]          
Investment, Identifier [Axis]: Policy Services Company, LLC, Warrants - Class A                  
Schedule of Investments [Line Items]                  
Fair Value   1,202 [3],[13]   1,262 [6],[14]          
Cost   0 [3],[13]   0 [6],[14]          
Investment, Identifier [Axis]: Policy Services Company, LLC, Warrants - Class B                  
Schedule of Investments [Line Items]                  
Fair Value   406 [3],[13]   426 [6],[14]          
Cost   0 [3],[13]   0 [6],[14]          
Investment, Identifier [Axis]: Policy Services Company, LLC, Warrants - Class CC                  
Schedule of Investments [Line Items]                  
Fair Value   0 [3],[13]   0 [6],[14]          
Cost   0 [3],[13]   0 [6],[14]          
Investment, Identifier [Axis]: Policy Services Company, LLC, Warrants - Class D                  
Schedule of Investments [Line Items]                  
Fair Value   116 [3],[13]   122 [6],[14]          
Cost   0 [3],[13]   0 [6],[14]          
Investment, Identifier [Axis]: Polymer Solutions Group Holdings, LLC, Common Stock                  
Schedule of Investments [Line Items]                  
Fair Value   0 [3],[13]   0 [6],[14]          
Cost   0 [3],[13]   0 [6],[14]          
Investment, Identifier [Axis]: Polymer Solutions Group Holdings, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   460 [2],[3],[15],[20],[35]   554 [5],[6],[16],[21],[36]          
Cost   993 [2],[3],[15],[20],[35]   993 [5],[6],[16],[21],[36]          
Investment, Identifier [Axis]: PowerGEM Buyer, Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   8,010 [1],[2],[3],[11]   6,710 [4],[5],[6],[12]          
Cost   8,063 [1],[2],[3],[11]   6,776 [4],[5],[6],[12]          
Investment, Identifier [Axis]: PowerGEM Buyer, Inc., Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   (22) [1],[2],[3],[11]   (26) [4],[5],[6],[12]          
Cost   (24) [1],[2],[3],[11]   (25) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Premium Franchise Brands, LLC, First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value   7,387 [1],[2],[3]   7,377 [4],[5],[6]          
Cost   7,412 [1],[2],[3]   7,425 [4],[5],[6]          
Investment, Identifier [Axis]: Premium Franchise Brands, LLC, First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value   2,725 [1],[2],[3]   2,694 [4],[5],[6]          
Cost   2,671 [1],[2],[3]   2,670 [4],[5],[6]          
Investment, Identifier [Axis]: Premium Invest, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   9,041 [2],[3],[8],[11],[17]   8,750 [5],[6],[10],[12],[18]          
Cost   8,887 [2],[3],[8],[11],[17]   8,879 [5],[6],[10],[12],[18]          
Investment, Identifier [Axis]: Preqin MC Limited, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [5],[6],[10],[23]       2,789          
Cost [5],[6],[10],[23]       2,740          
Investment, Identifier [Axis]: Pro-Vision Solutions Holdings, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   7,671 [2],[3],[20]   7,662 [4],[5],[6]          
Cost   7,661 [2],[3],[20]   7,656 [4],[5],[6]          
Investment, Identifier [Axis]: Pro-Vision Solutions Holdings, LLC, LLC Units                  
Schedule of Investments [Line Items]                  
Fair Value   233 [3],[13]   249 [6],[14]          
Cost   236 [3],[13]   236 [6],[14]          
Investment, Identifier [Axis]: Pro-Vision Solutions Holdings, LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   327 [2],[3],[11],[20]   (28) [4],[5],[6],[12]          
Cost   325 [2],[3],[11],[20]   (29) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Process Equipment, Inc. (ProcessBarron), First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   5,178 [2],[3],[22]   5,338 [5],[6],[23]          
Cost   5,338 [2],[3],[22]   5,335 [5],[6],[23]          
Investment, Identifier [Axis]: Process Insights Acquisition, Inc., Common Stock                  
Schedule of Investments [Line Items]                  
Fair Value   198 [3],[13]   237 [6],[14]          
Cost   281 [3],[13]   281 [6],[14]          
Investment, Identifier [Axis]: Process Insights Acquisition, Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   5,595 [1],[2],[3],[11]   5,134 [4],[5],[6],[12]          
Cost   5,633 [1],[2],[3],[11]   5,157 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Process Insights Acquisition, Inc., Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   509 [1],[2],[3],[11]   889 [4],[5],[6],[12]          
Cost   513 [1],[2],[3],[11]   891 [4],[5],[6],[12]          
Investment, Identifier [Axis]: ProfitOptics, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   1,608 [2],[3],[20]   1,613 [5],[6],[21]          
Cost   1,592 [2],[3],[20]   1,595 [5],[6],[21]          
Investment, Identifier [Axis]: ProfitOptics, LLC, LLC Units                  
Schedule of Investments [Line Items]                  
Fair Value   317 [3],[13]   198 [6],[14]          
Cost   161 [3],[13]   161 [6],[14]          
Investment, Identifier [Axis]: ProfitOptics, LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   242 [2],[3],[11],[20]   242 [5],[6],[12],[21]          
Cost   237 [2],[3],[11],[20]   237 [5],[6],[12],[21]          
Investment, Identifier [Axis]: ProfitOptics, LLC, Senior Subordinated Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   76 [3]   76 [6]          
Cost   81 [3]   81 [6]          
Investment, Identifier [Axis]: Proppants Holding, LLC, LLC Units                  
Schedule of Investments [Line Items]                  
Fair Value   0 [3],[15]   0 [6],[16]          
Cost   0 [3],[15]   0 [6],[16]          
Investment, Identifier [Axis]: Protego Bidco B.V., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   1,722 [2],[3],[8],[25]   1,646 [5],[6],[10],[24]          
Cost   1,890 [2],[3],[8],[25]   1,889 [5],[6],[10],[24]          
Investment, Identifier [Axis]: Protego Bidco B.V., Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   2,074 [2],[3],[8],[25]   1,974 [5],[6],[10],[24]          
Cost   2,292 [2],[3],[8],[25]   2,290 [5],[6],[10],[24]          
Investment, Identifier [Axis]: QPE7 SPV1 BidCo Pty Ltd, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   1,705 [2],[3],[8],[57]   1,694 [5],[6],[10],[58]          
Cost   1,977 [2],[3],[8],[57]   1,976 [5],[6],[10],[58]          
Investment, Identifier [Axis]: Qualified Industries, LLC, Common Stock                  
Schedule of Investments [Line Items]                  
Fair Value   73 [3],[13]   61 [6],[14]          
Cost   3 [3],[13]   3 [6],[14]          
Investment, Identifier [Axis]: Qualified Industries, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   2,571 [2],[3],[22]   2,567 [5],[6],[23]          
Cost   2,564 [2],[3],[22]   2,566 [5],[6],[23]          
Investment, Identifier [Axis]: Qualified Industries, LLC, Preferred Stock                  
Schedule of Investments [Line Items]                  
Fair Value   180 [3],[13]   175 [6],[14]          
Cost   144 [3],[13]   144 [6],[14]          
Investment, Identifier [Axis]: Qualified Industries, LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   (4) [2],[3],[11],[22]   (5) [5],[6],[12],[23]          
Cost   (5) [2],[3],[11],[22]   (5) [5],[6],[12],[23]          
Investment, Identifier [Axis]: Questel Unite, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [4],[5],[6],[10]       7,059          
Cost [4],[5],[6],[10]       7,010          
Investment, Identifier [Axis]: R1 Holdings, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   6,047 [2],[3],[22]   6,135 [5],[6],[21]          
Cost   5,966 [2],[3],[22]   5,973 [5],[6],[21]          
Investment, Identifier [Axis]: R1 Holdings, LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   801 [2],[3],[11],[22]   472 [5],[6],[12],[21]          
Cost   773 [2],[3],[11],[22]   425 [5],[6],[12],[21]          
Investment, Identifier [Axis]: RA Outdoors, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   13,005 [2],[3],[15],[22]   12,732 [4],[5],[6],[16]          
Cost   13,877 [2],[3],[15],[22]   13,506 [4],[5],[6],[16]          
Investment, Identifier [Axis]: RA Outdoors, LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   1,244 [2],[3],[15],[22]   1,217 [4],[5],[6],[16]          
Cost   1,352 [2],[3],[15],[22]   1,316 [4],[5],[6],[16]          
Investment, Identifier [Axis]: REP SEKO MERGER SUB LLC, Common Stock                  
Schedule of Investments [Line Items]                  
Fair Value   3,673 [3],[13]   4,595 [6],[14]          
Cost   5,403 [3],[13]   5,403 [6],[14]          
Investment, Identifier [Axis]: REP SEKO MERGER SUB LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   1,013 [1],[2],[3]   1,015 [4],[5],[6]          
Cost   994 [1],[2],[3]   995 [4],[5],[6]          
Investment, Identifier [Axis]: REP SEKO MERGER SUB LLC, First Out Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   2,571 [1],[2],[3]   2,577 [4],[5],[6]          
Cost   2,571 [1],[2],[3]   2,577 [4],[5],[6]          
Investment, Identifier [Axis]: ROI Solutions LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   17,991 [2],[3],[11],[22]   17,973 [4],[5],[6],[12]          
Cost   17,959 [2],[3],[11],[22]   17,989 [4],[5],[6],[12]          
Investment, Identifier [Axis]: ROI Solutions LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   (46) [2],[3],[11],[22]   (55) [4],[5],[6],[12]          
Cost   (50) [2],[3],[11],[22]   (52) [4],[5],[6],[12]          
Investment, Identifier [Axis]: RPX Corporation, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   21,610 [2],[3],[20]   21,638 [4],[5],[6]          
Cost   21,564 [2],[3],[20]   21,608 [4],[5],[6]          
Investment, Identifier [Axis]: RPX Corporation, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   (35) [2],[3],[11],[20]   (39) [4],[5],[6],[12]          
Cost   (40) [2],[3],[11],[20]   (42) [4],[5],[6],[12]          
Investment, Identifier [Axis]: RTIC Subsidiary Holdings, LLC, Class A Preferred Stock                  
Schedule of Investments [Line Items]                  
Fair Value   0 [3],[13],[15]   0 [6],[14],[16]          
Cost   4 [3],[13],[15]   4 [6],[14],[16]          
Investment, Identifier [Axis]: RTIC Subsidiary Holdings, LLC, Class B Preferred Stock                  
Schedule of Investments [Line Items]                  
Fair Value   0 [3],[13],[15]   0 [6],[14],[16]          
Cost   0 [3],[13],[15]   0 [6],[14],[16]          
Investment, Identifier [Axis]: RTIC Subsidiary Holdings, LLC, Class C Preferred Stock                  
Schedule of Investments [Line Items]                  
Fair Value   52 [3],[13],[15]   57 [6],[14],[16]          
Cost   450 [3],[13],[15]   450 [6],[14],[16]          
Investment, Identifier [Axis]: RTIC Subsidiary Holdings, LLC, Common Stock                  
Schedule of Investments [Line Items]                  
Fair Value   0 [3],[13],[15]   0 [6],[14],[16]          
Cost   0 [3],[13],[15]   0 [6],[14],[16]          
Investment, Identifier [Axis]: Randys Holdings, Inc., Common Stock                  
Schedule of Investments [Line Items]                  
Fair Value [3],[13]   671              
Cost [3],[13]   533              
Investment, Identifier [Axis]: Randys Holdings, Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   11,850 [1],[2],[3],[11]   10,873 [4],[5],[6],[12]          
Cost   11,662 [1],[2],[3],[11]   10,758 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Randys Holdings, Inc., Partnership Units                  
Schedule of Investments [Line Items]                  
Fair Value [6],[14]       622          
Cost [6],[14]       533          
Investment, Identifier [Axis]: Randys Holdings, Inc., Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   809 [1],[2],[3],[11]   613 [4],[5],[6],[12]          
Cost   783 [1],[2],[3],[11]   597 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Rapid Buyer LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   5,332 [1],[2],[3],[11]   5,313 [5],[6],[12],[23]          
Cost   5,331 [1],[2],[3],[11]   5,321 [5],[6],[12],[23]          
Investment, Identifier [Axis]: Rapid Buyer LLC, LLC Units                  
Schedule of Investments [Line Items]                  
Fair Value   536 [3],[13]   533 [6],[14]          
Cost   533 [3],[13]   533 [6],[14]          
Investment, Identifier [Axis]: Rapid Buyer LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   (19) [1],[2],[3],[11]   (22) [4],[5],[6],[12]          
Cost   (19) [1],[2],[3],[11]   (21) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Recovery Point Systems, Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   11,265 [1],[2],[3]   11,294 [4],[5],[6]          
Cost   11,212 [1],[2],[3]   11,232 [4],[5],[6]          
Investment, Identifier [Axis]: Recovery Point Systems, Inc., Partnership Equity                  
Schedule of Investments [Line Items]                  
Fair Value   82 [3],[13]   81 [6],[14]          
Cost   187 [3],[13]   187 [6],[14]          
Investment, Identifier [Axis]: Renovation Parent Holdings, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   4,363 [1],[2],[3]   4,308 [4],[5],[6]          
Cost   4,644 [1],[2],[3]   4,651 [4],[5],[6]          
Investment, Identifier [Axis]: Renovation Parent Holdings, LLC, Partnership Equity                  
Schedule of Investments [Line Items]                  
Fair Value   95 [3],[13]   85 [6],[14]          
Cost   202 [3],[13]   202 [6],[14]          
Investment, Identifier [Axis]: Resolute Investment Managers, Inc., Common Stock                  
Schedule of Investments [Line Items]                  
Fair Value   0 [3],[13],[15]   98 [6],[14],[16]          
Cost   0 [3],[13],[15]   0 [6],[14],[16]          
Investment, Identifier [Axis]: Rhondda Financing No. 1 DAC, Structured - Junior Note                  
Schedule of Investments [Line Items]                  
Fair Value [6],[10],[12]       26,044          
Cost [6],[10],[12]       25,713          
Investment, Identifier [Axis]: Riedel Beheer B.V., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   1,942 [2],[3],[8],[17]   1,963 [5],[6],[10],[18]          
Cost   2,267 [2],[3],[8],[17]   2,265 [5],[6],[10],[18]          
Investment, Identifier [Axis]: Rocade Holdings LLC, Common LP Units                  
Schedule of Investments [Line Items]                  
Fair Value   490 [3],[13],[45]   243 [6],[14],[46] 844 [46]        
Cost   0 [3],[13]   0 [6],[14]          
Investment, Identifier [Axis]: Rocade Holdings LLC, Preferred LP Units                  
Schedule of Investments [Line Items]                  
Fair Value   85,101 [1],[3],[11],[45]   83,000 [4],[6],[12],[45] 73,113 [46]        
Cost   85,102 [1],[3],[11]   82,989 [4],[6],[12]          
Investment, Identifier [Axis]: Rock Labor LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   6,436 [2],[3],[20]   6,426 [4],[5],[6]          
Cost   6,362 [2],[3],[20]   6,372 [4],[5],[6]          
Investment, Identifier [Axis]: Rock Labor LLC, LLC Units                  
Schedule of Investments [Line Items]                  
Fair Value   1,202 [3]   1,127 [6]          
Cost   1,252 [3]   1,252 [6]          
Investment, Identifier [Axis]: Rock Labor LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   (14) [1],[2],[3],[11]   (19) [4],[5],[6],[12]          
Cost   (25) [1],[2],[3],[11]   (26) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Royal Buyer, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   8,084 [1],[2],[3]   8,098 [4],[5],[6]          
Cost   7,990 [1],[2],[3]   8,006 [4],[5],[6]          
Investment, Identifier [Axis]: Royal Buyer, LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   0 [1],[2],[3],[11]   (2) [4],[5],[6],[12]          
Cost   (20) [1],[2],[3],[11]   (22) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Ruffalo Noel Levitz, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   4,405 [1],[2],[3],[35]   6,792 [4],[5],[6]          
Cost   9,937 [1],[2],[3],[35]   9,931 [4],[5],[6]          
Investment, Identifier [Axis]: Russell Investments US Institutional Holdco, Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   512 [1],[2],[3]   508 [4],[5],[6]          
Cost   491 [1],[2],[3]   491 [4],[5],[6]          
Investment, Identifier [Axis]: SBP Holdings LP, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   8,640 [2],[3],[11],[20]   8,648 [5],[6],[12],[21]          
Cost   8,444 [2],[3],[11],[20]   8,445 [5],[6],[12],[21]          
Investment, Identifier [Axis]: SBP Holdings LP, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   (11) [2],[3],[11],[20]   (13) [4],[5],[6],[12]          
Cost   (41) [2],[3],[11],[20]   (44) [4],[5],[6],[12]          
Investment, Identifier [Axis]: SISU ACQUISITIONCO., INC., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   6,657 [1],[2],[3]   6,591 [4],[5],[6],[12]          
Cost   7,229 [1],[2],[3]   7,236 [4],[5],[6],[12]          
Investment, Identifier [Axis]: SPATCO Energy Solutions, LLC, Common Stock                  
Schedule of Investments [Line Items]                  
Fair Value   274 [3],[13]   280 [6],[14]          
Cost   274 [3],[13]   274 [6],[14]          
Investment, Identifier [Axis]: SPATCO Energy Solutions, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   6,973 [1],[2],[3],[11]   6,990 [4],[5],[6],[12]          
Cost   6,950 [1],[2],[3],[11]   6,962 [4],[5],[6],[12]          
Investment, Identifier [Axis]: SPATCO Energy Solutions, LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   (18) [1],[2],[3],[11]   (18) [4],[5],[6],[12]          
Cost   (21) [1],[2],[3],[11]   (22) [4],[5],[6],[12]          
Investment, Identifier [Axis]: SSCP Pegasus Midco Limited, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   6,286 [2],[3],[8],[11],[27]   4,368 [5],[6],[10],[12],[26]          
Cost   6,218 [2],[3],[8],[11],[27]   4,489 [5],[6],[10],[12],[26]          
Investment, Identifier [Axis]: SSCP Spring Bidco 3 Limited, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   972 [2],[3],[8],[28]   941 [5],[6],[10],[29]          
Cost   936 [2],[3],[8],[28]   935 [5],[6],[10],[29]          
Investment, Identifier [Axis]: SVI International LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   588 [1],[2],[3],[11]   583 [4],[5],[6],[12]          
Cost   576 [1],[2],[3],[11]   577 [4],[5],[6],[12]          
Investment, Identifier [Axis]: SVI International LLC, LLC Units                  
Schedule of Investments [Line Items]                  
Fair Value   283 [3]   277 [6]          
Cost   208 [3]   208 [6]          
Investment, Identifier [Axis]: SVI International LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   0 [1],[2],[3],[11]   (1) [4],[5],[6],[12]          
Cost   (1) [1],[2],[3],[11]   (1) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Saab Purchaser, Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   17,622 [1],[2],[3],[11]   17,592 [4],[5],[6],[12]          
Cost   17,603 [1],[2],[3],[11]   17,596 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Saab Purchaser, Inc., Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   (21) [1],[2],[3],[11]   (24) [4],[5],[6],[12]          
Cost   (23) [1],[2],[3],[11]   (23) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Safety Products Holdings, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   14,775 [1],[2],[3]   14,812 [4],[5],[6]          
Cost   14,689 [1],[2],[3]   14,716 [4],[5],[6]          
Investment, Identifier [Axis]: Safety Products Holdings, LLC, Preferred Stock                  
Schedule of Investments [Line Items]                  
Fair Value   527 [3],[13]   537 [6],[14]          
Cost   380 [3],[13]   380 [6],[14]          
Investment, Identifier [Axis]: Sanoptis S.A.R.L., First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value   3,866 [2],[3],[8],[11],[25]   3,692 [5],[6],[10],[12],[24]          
Cost   3,721 [2],[3],[8],[11],[25]   3,711 [5],[6],[10],[12],[24]          
Investment, Identifier [Axis]: Sanoptis S.A.R.L., First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value   2,910 [2],[3],[8],[59]   2,788 [5],[6],[10],[50]          
Cost   2,781 [2],[3],[8],[59]   2,730 [5],[6],[10],[50]          
Investment, Identifier [Axis]: Sanoptis S.A.R.L., First Lien Senior Secured Term Loan 3                  
Schedule of Investments [Line Items]                  
Fair Value [5],[6],[10],[50]       46          
Cost [5],[6],[10],[50]       49          
Investment, Identifier [Axis]: Sansidor BV, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   691 [2],[3],[8],[11],[17]   534 [5],[6],[10],[12],[18]          
Cost   714 [2],[3],[8],[11],[17]   576 [5],[6],[10],[12],[18]          
Investment, Identifier [Axis]: Scaled Agile, Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   1,541 [1],[2],[3]   1,605 [4],[5],[6]          
Cost   1,761 [1],[2],[3]   1,764 [4],[5],[6]          
Investment, Identifier [Axis]: Scaled Agile, Inc., Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   291 [1],[2],[3]   302 [4],[5],[6]          
Cost   332 [1],[2],[3]   332 [4],[5],[6]          
Investment, Identifier [Axis]: Scout Bidco B.V., First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value   3,447 [2],[3],[8],[17]   3,297 [5],[6],[10],[18]          
Cost   3,364 [2],[3],[8],[17]   3,361 [5],[6],[10],[18]          
Investment, Identifier [Axis]: Scout Bidco B.V., First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value   442 [1],[2],[3],[8]   442 [4],[5],[6],[10]          
Cost   443 [1],[2],[3],[8]   443 [4],[5],[6],[10]          
Investment, Identifier [Axis]: Scout Bidco B.V., Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   (12) [2],[3],[8],[11],[17]   (14) [5],[6],[10],[12],[18]          
Cost   (4) [2],[3],[8],[11],[17]   (5) [5],[6],[10],[12],[18]          
Investment, Identifier [Axis]: Security Holdings B.V, Bridge Loan                  
Schedule of Investments [Line Items]                  
Fair Value   6,655 [38]   6,655 [40] 6,328 [40]        
Investment, Identifier [Axis]: Security Holdings B.V, Common Stock Series A                  
Schedule of Investments [Line Items]                  
Fair Value   449 [38]   399 [40] 311 [40]        
Investment, Identifier [Axis]: Security Holdings B.V, Common Stock Series B                  
Schedule of Investments [Line Items]                  
Fair Value   41,995 [38]   37,296 [40] 29,080 [40]        
Investment, Identifier [Axis]: Security Holdings B.V, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   5,725 [38]   5,333 [40] 3,866 [40]        
Investment, Identifier [Axis]: Security Holdings B.V, Senior Subordinated Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   11,345 [38]   11,191 [40] 10,867 [40]        
Investment, Identifier [Axis]: Security Holdings B.V, Senior Unsecured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   2,500 [38]   2,293 [40] 2,236 [40]        
Investment, Identifier [Axis]: Security Holdings B.V., Bridge Loan                  
Schedule of Investments [Line Items]                  
Fair Value   6,655 [3],[8],[54]   6,655 [6],[10],[53]          
Cost   6,655 [3],[8],[54]   6,655 [6],[10],[53]          
Investment, Identifier [Axis]: Security Holdings B.V., Common Stock Series A                  
Schedule of Investments [Line Items]                  
Fair Value   449 [3],[8],[13],[54]   399 [6],[10],[14],[53]          
Cost   560 [3],[8],[13],[54]   560 [6],[10],[14],[53]          
Investment, Identifier [Axis]: Security Holdings B.V., Common Stock Series B                  
Schedule of Investments [Line Items]                  
Fair Value   41,995 [3],[8],[13],[54]   37,296 [6],[10],[14],[53]          
Cost   35,192 [3],[8],[13],[54]   35,192 [6],[10],[14],[53]          
Investment, Identifier [Axis]: Security Holdings B.V., Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   5,725 [3],[8],[11],[54]   5,333 [6],[10],[12],[53]          
Cost   5,814 [3],[8],[11],[54]   5,650 [6],[10],[12],[53]          
Investment, Identifier [Axis]: Security Holdings B.V., Senior Subordinated Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   11,345 [3],[8],[54]   11,191 [6],[10],[53]          
Cost   11,345 [3],[8],[54]   11,191 [6],[10],[53]          
Investment, Identifier [Axis]: Security Holdings B.V., Senior Unsecured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   2,500 [3],[8],[11],[54]   2,293 [6],[10],[53]          
Cost   2,635 [3],[8],[11],[54]   2,526 [6],[10],[53]          
Investment, Identifier [Axis]: Selenium Designated Activity Company, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [2],[3],[8],[25]   7,574              
Cost [2],[3],[8],[25]   7,571              
Investment, Identifier [Axis]: Sereni Capital NV, First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value   943 [2],[3],[8],[32]   903 [5],[6],[10],[24]          
Cost   927 [2],[3],[8],[32]   926 [5],[6],[10],[24]          
Investment, Identifier [Axis]: Sereni Capital NV, First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value   1,588 [2],[3],[8],[32]   1,524 [5],[6],[10],[24]          
Cost   1,566 [2],[3],[8],[32]   1,564 [5],[6],[10],[24]          
Investment, Identifier [Axis]: Serta Simmons Bedding LLC, Common Stock                  
Schedule of Investments [Line Items]                  
Fair Value   906 [13]   655 [14]          
Cost   1,630 [13]   1,630 [14]          
Investment, Identifier [Axis]: Shelf Bidco Ltd, Common Stock                  
Schedule of Investments [Line Items]                  
Fair Value   4,632 [3],[8]   4,668 [6],[10]          
Cost   1,200 [3],[8]   1,200 [6],[10]          
Investment, Identifier [Axis]: Shelf Bidco Ltd, Second Out Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   12,127 [1],[2],[3],[8]   12,153 [4],[5],[6],[10]          
Cost   12,124 [1],[2],[3],[8]   12,154 [4],[5],[6],[10]          
Investment, Identifier [Axis]: Sierra Senior Loan Strategy JV I LLC, Member Interest                  
Schedule of Investments [Line Items]                  
Fair Value [10],[16],[51]       41,453          
Cost [10],[16],[51]       48,441          
Investment, Identifier [Axis]: Sierra Senior Loan Strategy JV I LLC, Member Interest                  
Schedule of Investments [Line Items]                  
Fair Value   40,548 [8],[15],[52]   41,453 39,172        
Cost [8],[15],[52]   48,441              
Investment, Identifier [Axis]: Sierra Senior Loan Strategy JV LLC (Sierra JV)                  
Schedule of Investments [Line Items]                  
Total contributed capital   110,100              
Investment, Identifier [Axis]: Sinari Invest, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   1,969 [2],[3],[8],[11],[25]   1,858 [5],[6],[10],[12],[24]          
Cost   1,945 [2],[3],[8],[11],[25]   1,943 [5],[6],[10],[12],[24]          
Investment, Identifier [Axis]: Skyvault Holdings LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   12,139 [3],[11]   3,586 [6],[12]          
Cost   12,139 [3],[11]   3,586 [6],[12]          
Investment, Identifier [Axis]: Skyvault Holdings LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   12,139 [45]   3,586 [45] 0 [46]        
Investment, Identifier [Axis]: Skyvault Holdings LLC, LLC Units                  
Schedule of Investments [Line Items]                  
Fair Value   4,046 [3],[13]   1,195 [6],[14]          
Cost   4,055 [3],[13]   1,195 [6],[14]          
Investment, Identifier [Axis]: Skyvault Holdings LLC, LLC Units                  
Schedule of Investments [Line Items]                  
Fair Value   4,046 [45]   1,195 [45] 0 [46]        
Investment, Identifier [Axis]: SmartShift Group, Inc., Common Stock                  
Schedule of Investments [Line Items]                  
Fair Value   519 [3],[13]   483 [6],[14]          
Cost   275 [3],[13]   275 [6],[14]          
Investment, Identifier [Axis]: SmartShift Group, Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   12,912 [2],[3],[22]   12,944 [4],[5],[6]          
Cost   12,721 [2],[3],[22]   12,732 [4],[5],[6]          
Investment, Identifier [Axis]: SmartShift Group, Inc., Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   0 [2],[3],[11],[22]   0 [4],[5],[6],[12]          
Cost   (31) [2],[3],[11],[22]   (32) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Smartling, Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   10,410 [2],[3],[22]   10,437 [4],[5],[6]          
Cost   10,310 [2],[3],[22]   10,328 [4],[5],[6]          
Investment, Identifier [Axis]: Smartling, Inc., Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   0 [2],[3],[11],[22]   0 [4],[5],[6],[12]          
Cost   (10) [2],[3],[11],[22]   (11) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Smile Brands Group Inc., First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value   1,166 [1],[2],[3]   1,230 [4],[5],[6]          
Cost   1,360 [1],[2],[3]   1,348 [4],[5],[6]          
Investment, Identifier [Axis]: Smile Brands Group Inc., First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value   3,310 [1],[2],[3]   3,477 [4],[5],[6]          
Cost   3,856 [1],[2],[3]   3,805 [4],[5],[6]          
Investment, Identifier [Axis]: Solo Buyer, L.P., Common Equity                  
Schedule of Investments [Line Items]                  
Fair Value   398 [3],[13]   325 [6],[14]          
Cost   516 [3],[13]   516 [6],[14]          
Investment, Identifier [Axis]: Solo Buyer, L.P., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   15,279 [1],[2],[3]   14,826 [4],[5],[6]          
Cost   15,007 [1],[2],[3]   15,033 [4],[5],[6]          
Investment, Identifier [Axis]: Solo Buyer, L.P., Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   862 [1],[2],[3],[11]   466 [4],[5],[6],[12]          
Cost   834 [1],[2],[3],[11]   499 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Sound Point CLO XX, Ltd., Subordinated Structured Notes                  
Schedule of Investments [Line Items]                  
Fair Value   44 [8],[13],[15]   61 [10],[14],[16]          
Cost   1,389 [8],[13],[15]   1,389 [10],[14],[16]          
Investment, Identifier [Axis]: Sparus Holdings, LLC (f/k/a Sparus Holdings, Inc.), First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   2,052 [1],[2],[3],[11]   2,057 [5],[6],[12],[23]          
Cost   2,037 [1],[2],[3],[11]   2,044 [5],[6],[12],[23]          
Investment, Identifier [Axis]: Sparus Holdings, LLC (f/k/a Sparus Holdings, Inc.), Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   77 [1],[2],[3],[11]   (1) [5],[6],[12],[23]          
Cost   77 [1],[2],[3],[11]   (2) [5],[6],[12],[23]          
Investment, Identifier [Axis]: Spatial Business Systems LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   14,878 [1],[2],[3]   14,706 [4],[5],[6]          
Cost   14,658 [1],[2],[3]   14,695 [4],[5],[6]          
Investment, Identifier [Axis]: Spatial Business Systems LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   0 [1],[2],[3],[11]   (21) [4],[5],[6],[12]          
Cost   (21) [1],[2],[3],[11]   (22) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Starnmeer B.V., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   2,500 [2],[3],[8],[22]   2,500 [5],[6],[10],[23]          
Cost   2,484 [2],[3],[8],[22]   2,482 [5],[6],[10],[23]          
Investment, Identifier [Axis]: Superjet Buyer, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   17,703 [1],[2],[3],[11]   17,712 [4],[5],[6],[12]          
Cost   17,738 [1],[2],[3],[11]   17,760 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Superjet Buyer, LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   (35) [1],[2],[3],[11]   (38) [4],[5],[6],[12]          
Cost   (27) [1],[2],[3],[11]   (29) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Syniverse Holdings, Inc., Series A Preferred Equity                  
Schedule of Investments [Line Items]                  
Fair Value   10,379 [3]   10,076 [6]          
Cost   10,167 [3]   10,167 [6]          
Investment, Identifier [Axis]: TA SL Cayman Aggregator Corp., Common Stock                  
Schedule of Investments [Line Items]                  
Fair Value   83 [3],[13]   84 [6],[14]          
Cost   50 [3],[13]   50 [6],[14]          
Investment, Identifier [Axis]: TA SL Cayman Aggregator Corp., Subordinated Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   2,969 [3]   2,785 [6]          
Cost   2,949 [3]   2,764 [6]          
Investment, Identifier [Axis]: TAPCO Buyer LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   13,559 [1],[2],[3]   13,517 [4],[5],[6],[12]          
Cost   13,535 [1],[2],[3]   13,523 [4],[5],[6],[12]          
Investment, Identifier [Axis]: TAPCO Buyer LLC, LLC Units                  
Schedule of Investments [Line Items]                  
Fair Value   261 [3],[13]   252 [6],[14]          
Cost   252 [3],[13]   252 [6],[14]          
Investment, Identifier [Axis]: TAPCO Buyer LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   (38) [1],[2],[3],[11]   (44) [4],[5],[6],[12]          
Cost   (41) [1],[2],[3],[11]   (43) [4],[5],[6],[12]          
Investment, Identifier [Axis]: THG Acquisition, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   10,246 [2],[3],[11],[20]   10,187 [5],[6],[12],[21]          
Cost   10,234 [2],[3],[11],[20]   10,190 [5],[6],[12],[21]          
Investment, Identifier [Axis]: THG Acquisition, LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   56 [2],[3],[11],[20]   97 [5],[6],[12],[21]          
Cost   55 [2],[3],[11],[20]   98 [5],[6],[12],[21]          
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value   2,568 [1],[2],[3]   2,572 [4],[5],[6]          
Cost   2,569 [1],[2],[3]   2,573 [4],[5],[6]          
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value   2,142 [1],[2],[3]   953 [4],[5],[6]          
Cost   2,131 [1],[2],[3]   949 [4],[5],[6]          
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., First Lien Senior Secured Term Loan 3                  
Schedule of Investments [Line Items]                  
Fair Value   7,859 [1],[2],[3],[11]   1,192 [4],[5],[6]          
Cost   7,846 [1],[2],[3],[11]   1,190 [4],[5],[6]          
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., First Lien Senior Secured Term Loan 4                  
Schedule of Investments [Line Items]                  
Fair Value [4],[5],[6],[12]       7,837          
Cost [4],[5],[6],[12]       7,840          
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., Partnership Units                  
Schedule of Investments [Line Items]                  
Fair Value   25 [3]   26 [6]          
Cost   5 [3]   5 [6]          
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   (4) [1],[2],[3],[11]   (4) [4],[5],[6],[12]          
Cost   (6) [1],[2],[3],[11]   (5) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Tank Holding Corp, First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value   7,792 [2],[3],[20]   7,792 [5],[6],[23]          
Cost   7,781 [2],[3],[20]   7,794 [5],[6],[23]          
Investment, Identifier [Axis]: Tank Holding Corp, First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value   2,998 [2],[3],[20]   2,868 [5],[6],[12],[21]          
Cost   2,972 [2],[3],[20]   2,836 [5],[6],[12],[21]          
Investment, Identifier [Axis]: Tank Holding Corp, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   (10) [2],[3],[11],[20]   (12) [5],[6],[12],[23]          
Cost   (10) [2],[3],[11],[20]   (11) [5],[6],[12],[23]          
Investment, Identifier [Axis]: Tanqueray Bidco Limited, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   1,693 [2],[3],[8],[11],[27]   1,643 [5],[6],[10],[12],[26]          
Cost   1,522 [2],[3],[8],[11],[27]   1,518 [5],[6],[10],[12],[26]          
Investment, Identifier [Axis]: Team Air Distributing, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [6]       35          
Cost [6]       35          
Investment, Identifier [Axis]: Team Air Distributing, LLC, Partnership Equity                  
Schedule of Investments [Line Items]                  
Fair Value   573 [3],[13]   625 [6],[14]          
Cost   523 [3],[13]   523 [6],[14]          
Investment, Identifier [Axis]: Team Air Distributing, LLC, Subordinated Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   739 [3]   702 [6]          
Cost   740 [3]   705 [6]          
Investment, Identifier [Axis]: Technology Service Stream BidCo Pty Ltd, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   674 [2],[3],[8],[11],[30]   677 [5],[6],[10],[12],[19]          
Cost   726 [2],[3],[8],[11],[30]   725 [5],[6],[10],[12],[19]          
Investment, Identifier [Axis]: Techone B.V., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   3,796 [2],[3],[8],[17]   3,609 [5],[6],[10],[18]          
Cost   3,819 [2],[3],[8],[17]   3,816 [5],[6],[10],[18]          
Investment, Identifier [Axis]: Techone B.V., Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   0 [2],[3],[8],[11],[17]   (4) [5],[6],[10],[12],[18]          
Cost   (24) [2],[3],[8],[11],[17]   (24) [5],[6],[10],[12],[18]          
Investment, Identifier [Axis]: Tencarva Machinery Company, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   14,010 [1],[2],[3],[11]   8,364 [4],[5],[6]          
Cost   14,058 [1],[2],[3],[11]   8,368 [4],[5],[6]          
Investment, Identifier [Axis]: Tencarva Machinery Company, LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   (32) [1],[2],[3],[11]   (18) [4],[5],[6],[12]          
Cost   (23) [1],[2],[3],[11]   (15) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Terrybear, Inc., Partnership Equity                  
Schedule of Investments [Line Items]                  
Fair Value   79 [3],[13]   120 [6],[14]          
Cost   239 [3],[13]   239 [6],[14]          
Investment, Identifier [Axis]: Terrybear, Inc., Subordinated Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   266 [3]   268 [6]          
Cost   285 [3]   282 [6]          
Investment, Identifier [Axis]: The Caprock Group, Inc. (aka TA/TCG Holdings, LLC), First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   2,645 [2],[3],[20]   2,647 [4],[5],[6]          
Cost   2,622 [2],[3],[20]   2,621 [4],[5],[6]          
Investment, Identifier [Axis]: The Caprock Group, Inc. (aka TA/TCG Holdings, LLC), Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   0 [2],[3],[11],[20]   0 [4],[5],[6],[12]          
Cost   (7) [2],[3],[11],[20]   (7) [4],[5],[6],[12]          
Investment, Identifier [Axis]: The Caprock Group, Inc. (aka TA/TCG Holdings, LLC), Subordinated Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   3,791 [2],[3],[22]   3,791 [5],[6],[23]          
Cost   3,752 [2],[3],[22]   3,750 [5],[6],[23]          
Investment, Identifier [Axis]: The Octave Music Group, Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   3,504 [1],[2]   3,595 [4],[5]          
Cost   3,584 [1],[2]   3,593 [4],[5]          
Investment, Identifier [Axis]: The Octave Music Group, Inc., Partnership Equity                  
Schedule of Investments [Line Items]                  
Fair Value   2,180 [3],[13]   2,180 [6]          
Cost   677 [3],[13]   677 [6]          
Investment, Identifier [Axis]: Thompson Rivers LLC                  
Schedule of Investments [Line Items]                  
Total contributed capital                 $ 75,000
Investment, Identifier [Axis]: Thompson Rivers LLC, Member Interest                  
Schedule of Investments [Line Items]                  
Fair Value [14],[51]       7,208          
Cost [14],[51]       22,897          
Investment, Identifier [Axis]: Thompson Rivers LLC, Member Interest                  
Schedule of Investments [Line Items]                  
Fair Value   6,237 [13],[52]   7,208 13,365        
Cost [13],[52]   21,938              
Investment, Identifier [Axis]: Thompsonn Rivers LLC                  
Schedule of Investments [Line Items]                  
Total contributed capital   79,411   79,411          
Investment, Identifier [Axis]: Transportation Insight, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   8,667 [1],[2],[3]   8,518 [4],[5],[6]          
Cost   11,055 [1],[2],[3]   11,030 [4],[5],[6]          
Investment, Identifier [Axis]: Trident Maritime Systems, Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   14,186 [1],[2],[3]   14,420 [4],[5],[6]          
Cost   15,326 [1],[2],[3]   15,202 [4],[5],[6]          
Investment, Identifier [Axis]: Trintech, Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   6,795 [2],[3],[20]   6,787 [5],[6],[21]          
Cost   6,715 [2],[3],[20]   6,725 [5],[6],[21]          
Investment, Identifier [Axis]: Trintech, Inc., Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   147 [2],[3],[11],[20]   145 [5],[6],[12],[21]          
Cost   140 [2],[3],[11],[20]   140 [5],[6],[12],[21]          
Investment, Identifier [Axis]: True Religion Apparel, Inc., Class A Units                  
Schedule of Investments [Line Items]                  
Fair Value [6],[14],[16]       0          
Cost [6],[14],[16]       0          
Investment, Identifier [Axis]: Turbo Buyer, Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   7,677 [1],[2],[3]   7,754 [4],[5],[6]          
Cost   8,111 [1],[2],[3]   8,121 [4],[5],[6]          
Investment, Identifier [Axis]: Turnberry Solutions, Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   4,861 [2],[3],[20]   4,874 [5],[6],[21]          
Cost   4,833 [2],[3],[20]   4,839 [5],[6],[21]          
Investment, Identifier [Axis]: UBC Ledgers Holding AB, First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value   559 [1],[2],[3],[8]   536 [5],[6],[10],[18]          
Cost   556 [1],[2],[3],[8]   556 [5],[6],[10],[18]          
Investment, Identifier [Axis]: UBC Ledgers Holding AB, First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value   1,595 [2],[3],[8],[11],[60]   1,450 [5],[6],[10],[12],[34]          
Cost   1,487 [2],[3],[8],[11],[60]   1,486 [5],[6],[10],[12],[34]          
Investment, Identifier [Axis]: UHY Advisors, Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   13,247 [1],[2],[3],[11]   12,982 [4],[5],[6],[12]          
Cost   13,012 [1],[2],[3],[11]   12,991 [4],[5],[6],[12]          
Investment, Identifier [Axis]: UHY Advisors, Inc., Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   779 [1],[2],[3],[11]   (35) [4],[5],[6],[12]          
Cost   748 [1],[2],[3],[11]   (34) [4],[5],[6],[12]          
Investment, Identifier [Axis]: UKFast Leaders Limited, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   11,403 [2],[3],[8],[27]   11,041 [5],[6],[10],[26]          
Cost   11,873 [2],[3],[8],[27]   11,860 [5],[6],[10],[26]          
Investment, Identifier [Axis]: US Bank National Association Series 2025-1, Structured Note - Class R                  
Schedule of Investments [Line Items]                  
Fair Value [1],[2],[3],[8]   7,500              
Cost [1],[2],[3],[8]   7,500              
Investment, Identifier [Axis]: USLS Acquisition, Inc. (f/k/a US Legal Support, Inc.), First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value   12,440 [1],[2],[3]   12,487 [4],[5],[6]          
Cost   12,521 [1],[2],[3]   12,558 [4],[5],[6]          
Investment, Identifier [Axis]: USLS Acquisition, Inc. (f/k/a US Legal Support, Inc.), First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value   5,397 [1],[2],[3]   5,411 [4],[5],[6]          
Cost   5,404 [1],[2],[3]   5,414 [4],[5],[6]          
Investment, Identifier [Axis]: Union Bidco Limited, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   961 [2],[3],[8],[11],[27]   930 [5],[6],[10],[12],[29]          
Cost   893 [2],[3],[8],[11],[27]   892 [5],[6],[10],[12],[29]          
Investment, Identifier [Axis]: United Therapy Holding III GmbH, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   1,455 [2],[3],[8],[11],[17]   1,204 [5],[6],[10],[12],[18]          
Cost   1,881 [2],[3],[8],[11],[17]   1,713 [5],[6],[10],[12],[18]          
Investment, Identifier [Axis]: Unither (Uniholding), First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   2,047 [2],[3],[8],[11],[17]   1,962 [5],[6],[10],[12],[18]          
Cost   1,968 [2],[3],[8],[11],[17]   1,965 [5],[6],[10],[12],[18]          
Investment, Identifier [Axis]: Utac Ceram, First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value   1,565 [2],[3],[8],[17]   1,500 [5],[6],[10],[18]          
Cost   1,755 [2],[3],[8],[17]   1,754 [5],[6],[10],[18]          
Investment, Identifier [Axis]: Utac Ceram, First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value   937 [1],[2],[3],[8]   2,471 [4],[5],[6],[10]          
Cost   988 [1],[2],[3],[8]   2,572 [4],[5],[6],[10]          
Investment, Identifier [Axis]: Utac Ceram, First Lien Senior Secured Term Loan 3                  
Schedule of Investments [Line Items]                  
Fair Value   2,460 [1],[2],[3],[8]   943 [4],[5],[6],[10]          
Cost   2,563 [1],[2],[3],[8]   994 [4],[5],[6],[10]          
Investment, Identifier [Axis]: VB Spine Intermediary II LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [1],[2],[3]   43,527              
Cost [1],[2],[3]   43,527              
Investment, Identifier [Axis]: VOYA CLO 2015-2, LTD., Subordinated Structured Notes                  
Schedule of Investments [Line Items]                  
Fair Value   81 [8],[13],[15]   15 [10],[14],[16]          
Cost   2,496 [8],[13],[15]   2,496 [10],[14],[16]          
Investment, Identifier [Axis]: VOYA CLO 2016-2, LTD., Subordinated Structured Notes                  
Schedule of Investments [Line Items]                  
Fair Value   1,198 [8],[13],[15]   1,072 [10],[14],[16]          
Cost   1,608 [8],[13],[15]   2,462 [10],[14],[16]          
Investment, Identifier [Axis]: Validity, Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   4,783 [2],[3],[22]   4,783 [5],[6],[21]          
Cost   4,756 [2],[3],[22]   4,750 [5],[6],[21]          
Investment, Identifier [Axis]: Velocity Pooling Vehicle, LLC, Common Stock                  
Schedule of Investments [Line Items]                  
Fair Value   2 [3],[13],[15]   2 [6],[14],[16]          
Cost   60 [3],[13],[15]   60 [6],[14],[16]          
Investment, Identifier [Axis]: Velocity Pooling Vehicle, LLC, Warrants                  
Schedule of Investments [Line Items]                  
Fair Value   3 [3],[13],[15]   3 [6],[14],[16]          
Cost   72 [3],[13],[15]   72 [6],[14],[16]          
Investment, Identifier [Axis]: Victoria Bidco Limited, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   3,923 [2],[3],[8],[28]   3,787 [5],[6],[10],[29]          
Cost   4,085 [2],[3],[8],[28]   4,081 [5],[6],[10],[29]          
Investment, Identifier [Axis]: Vision Solutions Inc., Second Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   6,237 [1],[2],[15]   6,256 [4],[5],[16]          
Cost   6,497 [1],[2],[15]   6,497 [4],[5],[16]          
Investment, Identifier [Axis]: Vista Global Holding Ltd, Structured Secured Note - Class C                  
Schedule of Investments [Line Items]                  
Fair Value   499 [3],[8]   495 [6],[10]          
Cost   500 [3],[8]   500 [6],[10]          
Investment, Identifier [Axis]: VistaJet Pass Through Trust 2021-1B, Structured Secured Note - Class B                  
Schedule of Investments [Line Items]                  
Fair Value   2,811 [3]   3,160 [6]          
Cost   2,857 [3]   3,214 [6]          
Investment, Identifier [Axis]: Vital Buyer, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   17,881 [1],[2],[3]   7,241 [4],[5],[6]          
Cost   17,881 [1],[2],[3]   7,249 [4],[5],[6]          
Investment, Identifier [Axis]: Vital Buyer, LLC, Partnership Units                  
Schedule of Investments [Line Items]                  
Fair Value   309 [3]   388 [6]          
Cost   164 [3]   164 [6]          
Investment, Identifier [Axis]: W2O Holdings, Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   14,928 [2],[3],[20]   11,772 [4],[5],[6]          
Cost   14,911 [2],[3],[20]   11,803 [4],[5],[6]          
Investment, Identifier [Axis]: WEST-NR ACQUISITIONCO, LLC, First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value   8,465 [1],[2],[3],[11]   2,502 [4],[5],[6],[12]          
Cost   8,467 [1],[2],[3],[11]   2,500 [4],[5],[6],[12]          
Investment, Identifier [Axis]: WEST-NR ACQUISITIONCO, LLC, First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value   1,817 [1],[2],[3],[11]   5,959 [4],[5],[6]          
Cost   1,812 [1],[2],[3],[11]   5,957 [4],[5],[6]          
Investment, Identifier [Axis]: WEST-NR ACQUISITIONCO, LLC, First Lien Senior Secured Term Loan 3                  
Schedule of Investments [Line Items]                  
Fair Value [4],[5],[6],[12]       1,816          
Cost [4],[5],[6],[12]       1,809          
Investment, Identifier [Axis]: WWEC Holdings III Corp, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   12,008 [1],[2],[3]   12,050 [4],[5],[6]          
Cost   12,009 [1],[2],[3]   11,997 [4],[5],[6]          
Investment, Identifier [Axis]: WWEC Holdings III Corp, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   (37) [1],[2],[3],[11]   (35) [4],[5],[6],[12]          
Cost   (37) [1],[2],[3],[11]   (35) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Waccamaw River LLC                  
Schedule of Investments [Line Items]                  
Total contributed capital   30,280   30,280       $ 25,000  
Investment, Identifier [Axis]: Waccamaw River LLC, Member Interest                  
Schedule of Investments [Line Items]                  
Fair Value [10],[51]       10,730          
Cost [10],[51]       22,913          
Investment, Identifier [Axis]: Waccamaw River LLC, Member Interest                  
Schedule of Investments [Line Items]                  
Fair Value   8,803 [8],[52]   10,730 $ 15,470        
Cost [8],[52]   21,165              
Investment, Identifier [Axis]: Whitcraft Holdings, Inc., First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value   1,804 [1],[2],[3]   1,802 [4],[5],[6]          
Cost   1,825 [1],[2],[3]   1,825 [4],[5],[6]          
Investment, Identifier [Axis]: Whitcraft Holdings, Inc., First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value   1,170 [1],[2],[3],[11]   (36) [4],[5],[6],[12]          
Cost   1,167 [1],[2],[3],[11]   (39) [4],[5],[6],[12]          
Investment, Identifier [Axis]: Whitcraft Holdings, Inc., First Lien Senior Secured Term Loan 3                  
Schedule of Investments [Line Items]                  
Fair Value   8,504 [1],[2],[3]   8,525 [5],[6],[21]          
Cost   8,256 [1],[2],[3]   8,265 [5],[6],[21]          
Investment, Identifier [Axis]: Whitcraft Holdings, Inc., LP Units                  
Schedule of Investments [Line Items]                  
Fair Value   971 [3],[13]   975 [6],[14]          
Cost   631 [3],[13]   631 [6],[14]          
Investment, Identifier [Axis]: Whitcraft Holdings, Inc., Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   1,255 [1],[2],[3],[11]   993 [5],[6],[12],[21]          
Cost   1,206 [1],[2],[3],[11]   941 [5],[6],[12],[21]          
Investment, Identifier [Axis]: White Bidco Limited, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   1,749 [1],[2],[3],[8],[11]   1,747 [4],[5],[6],[10],[12]          
Cost   1,697 [1],[2],[3],[8],[11]   1,695 [4],[5],[6],[10],[12]          
Investment, Identifier [Axis]: Woodland Foods, LLC, Common Stock                  
Schedule of Investments [Line Items]                  
Fair Value   1,556 [3],[13]   1,271 [6],[14]          
Cost   1,663 [3],[13]   1,663 [6],[14]          
Investment, Identifier [Axis]: Woodland Foods, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   15,514 [1],[2],[3],[11]   6,097 [4],[5],[6]          
Cost   15,545 [1],[2],[3],[11]   6,092 [4],[5],[6]          
Investment, Identifier [Axis]: Woodland Foods, LLC, Preferred Stock                  
Schedule of Investments [Line Items]                  
Fair Value [6]       427          
Cost [6]       427          
Investment, Identifier [Axis]: Woodland Foods, LLC, Preferred Stock 1                  
Schedule of Investments [Line Items]                  
Fair Value [3]   448              
Cost [3]   448              
Investment, Identifier [Axis]: Woodland Foods, LLC, Preferred Stock 2                  
Schedule of Investments [Line Items]                  
Fair Value [3]   124              
Cost [3]   124              
Investment, Identifier [Axis]: Woodland Foods, LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   869 [1],[2],[3],[11]   1,043 [4],[5],[6],[12]          
Cost   880 [1],[2],[3],[11]   1,041 [4],[5],[6],[12]          
Investment, Identifier [Axis]: World 50, Inc., First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   13,862 [1],[2],[3]   13,785 [5],[6],[21]          
Cost   13,620 [1],[2],[3]   13,645 [5],[6],[21]          
Investment, Identifier [Axis]: World 50, Inc., Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   0 [1],[2],[3],[11]   (8) [5],[6],[12],[21]          
Cost   (16) [1],[2],[3],[11]   (17) [5],[6],[12],[21]          
Investment, Identifier [Axis]: Xeinadin Bidco Limited, Common Stock                  
Schedule of Investments [Line Items]                  
Fair Value   589 [3],[8],[13]   572 [6],[10],[14]          
Cost   565 [3],[8],[13]   565 [6],[10],[14]          
Investment, Identifier [Axis]: Xeinadin Bidco Limited, First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value   298 [2],[3],[8],[25]   283 [5],[6],[10],[24]          
Cost   305 [2],[3],[8],[25]   305 [5],[6],[10],[24]          
Investment, Identifier [Axis]: Xeinadin Bidco Limited, First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value   8,956 [2],[3],[8],[28]   8,598 [5],[6],[10],[29]          
Cost   8,666 [2],[3],[8],[28]   8,657 [5],[6],[10],[29]          
Investment, Identifier [Axis]: Xeinadin Bidco Limited, Subordinated Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   3,870 [3],[8]   3,691 [6],[10]          
Cost   3,809 [3],[8]   3,691 [6],[10]          
Investment, Identifier [Axis]: ZB Holdco LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value [4],[5],[6]       9,053          
Cost [4],[5],[6]       9,057          
Investment, Identifier [Axis]: ZB Holdco LLC, First Lien Senior Secured Term Loan 1                  
Schedule of Investments [Line Items]                  
Fair Value [1],[2],[3]   9,050              
Cost [1],[2],[3]   9,043              
Investment, Identifier [Axis]: ZB Holdco LLC, First Lien Senior Secured Term Loan 2                  
Schedule of Investments [Line Items]                  
Fair Value [1],[2],[3],[11]   (22)              
Cost [1],[2],[3],[11]   (21)              
Investment, Identifier [Axis]: ZB Holdco LLC, LLC Units                  
Schedule of Investments [Line Items]                  
Fair Value   222 [3],[13]   197 [6],[14]          
Cost   153 [3],[13]   153 [6],[14]          
Investment, Identifier [Axis]: ZB Holdco LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   983 [1],[2],[3],[11]   495 [4],[5],[6],[12]          
Cost   986 [1],[2],[3],[11]   498 [4],[5],[6],[12]          
Investment, Identifier [Axis]: Zeppelin Bidco Limited, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   2,873 [2],[3],[8],[28],[35]   4,691 [5],[6],[10],[29]          
Cost   6,262 [2],[3],[8],[28],[35]   6,256 [5],[6],[10],[29]          
Investment, Identifier [Axis]: eShipping, LLC, First Lien Senior Secured Term Loan                  
Schedule of Investments [Line Items]                  
Fair Value   3,300 [2],[3],[20]   3,465 [5],[6],[21]          
Cost   3,271 [2],[3],[20]   3,431 [5],[6],[21]          
Investment, Identifier [Axis]: eShipping, LLC, Revolver                  
Schedule of Investments [Line Items]                  
Fair Value   0 [2],[3],[11],[20]   0 [5],[6],[12],[21]          
Cost   (13) [2],[3],[11],[20]   (14) [5],[6],[12],[21]          
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              
MMALIC | Investment, Identifier [Axis]: Sierra Senior Loan Strategy JV LLC (Sierra JV)                  
Schedule of Investments [Line Items]                  
Total contributed capital   14,500              
Sierra JV                  
Schedule of Investments [Line Items]                  
Dividends   2,000 500            
Total dividend income   1,800 $ 400            
Fair Value   25,115   33,422          
Cost   $ 27,686   $ 36,083          
Weighted average yield   9.60%   9.40%          
MassMutual Ascend Life Insurance Company                  
Schedule of Investments [Line Items]                  
Number of members | member 2                
All Members Of Sierra JV                  
Schedule of Investments [Line Items]                  
Number of members | member 4                
[1] The interest rate on these loans is subject to 3 Month SOFR, which as of March 31, 2025 was 4.28788%.
[2] Debt investment includes interest rate floor feature.
[3] The fair value of the investment was determined using significant unobservable inputs.
[4] The interest rate on these loans is subject to 3 Month SOFR, which as of December 31, 2024 was 4.30510%.
[5] Debt investment includes interest rate floor feature.
[6] The fair value of the investment was determined using significant unobservable inputs.
[7] PIK non-accrual investment.
[8] Investment is not a qualifying investment as defined under Section 55(a) of the 1940 Act. Non-qualifying assets represent 24.0% of total investments at fair value as of March 31, 2025. Qualifying assets must represent at least 70% of total assets at the time of acquisition of any additional non-qualifying assets. If at any time qualifying assets do not represent at least 70% of the Company’s total assets, the Company will be precluded from acquiring any additional non-qualifying asset until such time as it complies with the requirements of Section 55(a).
[9] PIK non-accrual investment.
[10] Investment is not a qualifying investment as defined under Section 55(a) of the 1940 Act. Non-qualifying assets represent 26.1% of total investments at fair value as of December 31, 2024. Qualifying assets must represent at least 70% of total assets at the time of acquisition of any additional non-qualifying assets. If at any time qualifying assets do not represent at least 70% of the Company’s total assets, the Company will be precluded from acquiring any additional non-qualifying asset until such time as it complies with the requirements of Section 55(a).
[11] Position or portion thereof is an unfunded loan or equity commitment.
[12] Position or portion thereof is an unfunded loan or equity commitment.
[13] Investment is non-income producing.
[14] Investment is non-income producing.
[15] Investment was purchased as part of the Sierra Merger and is part of the Sierra Reference Portfolio for purposes of the Sierra Credit Support Agreement.
[16] Investment was purchased as part of the Sierra Merger and is part of the Sierra Reference Portfolio for purposes of the Sierra Credit Support Agreement.
[17] The interest rate on these loans is subject to 3 Month EURIBOR, which as of March 31, 2025 was 2.33600%.
[18] The interest rate on these loans is subject to 3 Month EURIBOR, which as of December 31, 2024 was 2.71400%.
[19] The interest rate on these loans is subject to 6 Month BBSY, which as of December 31, 2024 was 4.49250%.
[20] The interest rate on these loans is subject to 1 Month SOFR, which as of March 31, 2025 was 4.31937%.
[21] The interest rate on these loans is subject to 1 Month SOFR, which as of December 31, 2024 was 4.33249%.
[22] The interest rate on these loans is subject to 6 Month SOFR, which as of March 31, 2025 was 4.19259%.
[23] The interest rate on these loans is subject to 6 Month SOFR, which as of December 31, 2024 was 4.25001%.
[24] The interest rate on these loans is subject to 6 Month EURIBOR, which as of December 31, 2024 was 2.56800%.
[25] The interest rate on these loans is subject to 6 Month EURIBOR, which as of March 31, 2025 was 2.33600%.
[26] The interest rate on these loans is subject to 3 Month SONIA, which as of December 31, 2024 was 4.62330%.
[27] The interest rate on these loans is subject to 3 Month SONIA, which as of March 31, 2025 was 4.35650%.
[28] The interest rate on these loans is subject to 6 Month SONIA, which as of March 31, 2025 was 4.27950%.
[29] The interest rate on these loans is subject to 6 Month SONIA, which as of December 31, 2024 was 4.56370%.
[30] The interest rate on these loans is subject to 3 Month BBSY, which as of March 31, 2025 was 4.12540%.
[31] The interest rate on these loans is subject to 3 Month BBSY, which as of December 31, 2024 was 4.41630%.
[32] The interest rate on these loans is subject to 1 Month EURIBOR, which as of March 31, 2025 was 2.35800%.
[33] The interest rate on these loans is subject to 1 Month EURIBOR, which as of December 31, 2024 was 2.84500%.
[34] The interest rate on these loans is subject to 3 Month STIBOR, which as of December 31, 2024 was 2.54200%.
[35] Non-accrual investment.
[36] Non-accrual investment.
[37] Non-accrual investment.
[38] The fair value of the investment was determined using significant unobservable inputs.
[39] The Sierra Credit Support Agreement covers all of the investments acquired by the Company from Sierra in connection with the Sierra Merger and any investments received by the Company in connection with the restructuring, amendment, extension or other modification (including the issuance of new securities) of any of the Sierra Reference Portfolio. Each investment that is included in the Sierra Reference Portfolio is denoted in the above Schedule of Investments with footnote (28).
[40] The fair value of the investment was determined using significant unobservable inputs.
[41] The interest rate on these loans is subject to 1 Month SONIA, which as of March 31, 2025 was 4.46580%.
[42] The interest rate on these loans is subject to 1 Month SONIA, which as of December 31, 2024 was 4.71030%.
[43] The interest rate on these loans is subject to 3 Month CORRA, which as of March 31, 2025 was 2.77000%.
[44] The interest rate on these loans is subject to 3 Month CORRA, which as of December 31, 2024 was 3.15158%.
[45] The fair value of the investment was determined using significant unobservable inputs.
[46] The fair value of the investment was determined using significant unobservable inputs.
[47] The interest rate on these loans is subject to 3 Month BKBM, which as of March 31, 2025 was 3.67000%.
[48] The interest rate on these loans is subject to 3 Month BKBM, which as of December 31, 2024 was 4.27000%.
[49] The interest rate on these loans is subject to 3 Month SARON, which as of March 31, 2025 was 0.41000%
[50] The interest rate on these loans is subject to 6 Month SARON, which as of December 31, 2024 was 1.01720%.
[51] Portfolio company does not issue shares or units, member interest is based on commitments.
[52] Portfolio company does not issue shares or units, member interest is based on commitments.
[53] Investment was purchased as part of the MVC Acquisition and is part of the MVC Reference Portfolio for purposes of the MVC Credit Support Agreement.
[54] Investment was purchased as part of the MVC Acquisition and is part of the MVC Reference Portfolio for purposes of the MVC Credit Support Agreement.
[55] The interest rate on these loans is subject to 1 Month NIBOR, which as of March 31, 2025 was 4.49000%.
[56] The interest rate on these loans is subject to 1 Month NIBOR, which as of December 31, 2024 was 4.61000%.
[57] The interest rate on these loans is subject to 1 Month BBSY, which as of March 31, 2025 was 4.09500%.
[58] The interest rate on these loans is subject to 1 Month BBSY, which as of December 31, 2024 was 4.32250%.
[59] The interest rate on these loans is subject to 6 Month SARON, which as of March 31, 2025 was 0.20632%.
[60] The interest rate on these loans is subject to 3 Month STIBOR, which as of March 31, 2025 was 2.35700%.