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Investments - Additional Information (Details)
$ in Thousands
 12 Months Ended
Feb. 01, 2023
USD ($)
Feb. 25, 2022
member
Apr. 01, 2018
USD ($)
Dec. 31, 2023
USD ($)
investment
loan
Dec. 31, 2022
USD ($)
investment
loan
Dec. 31, 2021
USD ($)
investment
Aug. 12, 2022
USD ($)
Jun. 02, 2022
USD ($)
Jul. 08, 2021
USD ($)
Feb. 08, 2021
USD ($)
May 13, 2020
USD ($)
May 08, 2019
USD ($)
Summary of Investment Holdings [Line Items]                        
Number of investments entered into | investment       39 95 112            
Purchases of portfolio investments       $ 264,600 $ 884,800 $ 1,069,400            
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]       Net unrealized appreciation (depreciation) on investments Net unrealized appreciation (depreciation) on investments              
Total unused commitments to extend financing       $ 305,903 $ 308,532              
Total dividend income       36,917 30,204 8,879            
Total investments at fair value       2,488,715 [1] 2,448,935              
Cost       2,535,576 [1] 2,562,398              
Borrowings under credit facilities       719,914 729,144              
Repayments received/sales of portfolio investments     $ 981,200                  
Distributions of realized gains by controlled investment companies       $ 0 6,181 0            
Number of members | member   2                    
Investment, interest rate, paid in kind [2],[3],[4],[5]       3.30%                
Jocassee Partners LLC                        
Summary of Investment Holdings [Line Items]                        
Repayments received/sales of portfolio investments       $ 1,036,100 875,900              
Gain (loss) on sale of investments       (100) (5,600)              
Due from related parties       0 18,200              
MassMutual Ascend Life Insurance Company                        
Summary of Investment Holdings [Line Items]                        
Number of members | member   2                    
Minimum | Rocade Holdings LLC                        
Summary of Investment Holdings [Line Items]                        
Investment, interest rate, paid in kind 10.00%                      
Maximum | Rocade Holdings LLC                        
Summary of Investment Holdings [Line Items]                        
Investment, interest rate, paid in kind 25.00%                      
Line of Credit                        
Summary of Investment Holdings [Line Items]                        
Long-term debt, gross       719,914 729,144              
Thompson Rivers LLC                        
Summary of Investment Holdings [Line Items]                        
Dividends       111,000 261,900              
Total contributed capital       450,000                
All Member Of Waccamaw River LLC                        
Summary of Investment Holdings [Line Items]                        
Total contributed capital       125,000                
Total return of capital (recallable)       14,000                
Waccamaw River, LLC                        
Summary of Investment Holdings [Line Items]                        
Dividends       7,300 9,300              
Waccamaw River, LLC | JPMorgan Chase Bank N.A. Non-Recourse Loan | Secured Debt                        
Summary of Investment Holdings [Line Items]                        
Long-term debt, gross       71,000 72,300              
Waccamaw River, LLC | Barclay Bank PLC Non-Recourse Loan | Secured Debt                        
Summary of Investment Holdings [Line Items]                        
Long-term debt, gross       51,300 44,800              
All Members Of Sierra JV                        
Summary of Investment Holdings [Line Items]                        
Number of members | member   4                    
Sierra JV                        
Summary of Investment Holdings [Line Items]                        
Dividends       8,400 45,200              
Subscription Facility | Jocassee Partners LLC | Bank Of America Subscription Facility | Line of Credit                        
Summary of Investment Holdings [Line Items]                        
Borrowings under credit facilities       177,700 174,300              
Subscription Facility | Jocassee Partners LLC | Citibank N.A. Subscription Facility | Line of Credit                        
Summary of Investment Holdings [Line Items]                        
Borrowings under credit facilities       398,200 357,900              
Subscription Facility | Jocassee Partners LLC | Term Debt Securitization | Line of Credit                        
Summary of Investment Holdings [Line Items]                        
Borrowings under credit facilities       323,500 323,300              
Revolving Credit Facility | Sierra JV | Line of Credit                        
Summary of Investment Holdings [Line Items]                        
Borrowings under credit facilities       45,000 75,000              
Investment, Identifier [Axis]: Sinari Invest, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       617 0              
Investment, Identifier [Axis]: 1888 Industrial Services, LLC, Energy: Oil & Gas, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [6],[7],[8],[9],[10]         0              
Cost [6],[7],[8],[9],[10]         419              
Investment, Identifier [Axis]: 1888 Industrial Services, LLC, Energy: Oil & Gas, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [6],[7],[8],[9],[10]         1,263              
Cost [6],[7],[8],[9],[10]         1,498              
Investment, Identifier [Axis]: 1888 Industrial Services, LLC, Energy: Oil & Gas, Warrants                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [6],[10],[11]         0              
Cost [6],[10],[11]         0              
Investment, Identifier [Axis]: 1888 Industrial Services, LLC, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       0 [12] 0 [12] 0            
Investment, Identifier [Axis]: 1888 Industrial Services, LLC, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       0 [12] 1,263 [12] 0            
Investment, Identifier [Axis]: 1888 Industrial Services, LLC, Warrants                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       0 [12] 0 [12] 0            
Investment, Identifier [Axis]: 1WorldSync, Inc., IT Consulting & Other Services, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       7,124 [3],[5],[13] 16,307 [9],[10],[14]              
Cost       7,073 [3],[5],[13] 16,124 [9],[10],[14]              
Investment, Identifier [Axis]: A.T. Holdings II LTD, Other Financial, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       11,688 [4],[5] 12,500 [10],[15]              
Cost       12,500 [4],[5] 12,500 [10],[15]              
Investment, Identifier [Axis]: ADB Safegate, Aerospace & Defense, Second Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       5,392 [2],[3],[4],[5] 4,180 [8],[9],[10],[15]              
Cost       6,129 [2],[3],[4],[5] 5,184 [8],[9],[10],[15]              
Investment, Identifier [Axis]: AIT Worldwide Logistics Holdings, Inc., Transportation Services, Partnership Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       537 [5],[16] 798 [10],[11]              
Cost       349 [5],[16] 349 [10],[11]              
Investment, Identifier [Axis]: AIT Worldwide Logistics Holdings, Inc., Transportation Services, Second Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       6,402 [3],[5],[17] 6,215 [8],[9],[10]              
Cost       6,355 [3],[5],[17] 6,339 [8],[9],[10]              
Investment, Identifier [Axis]: AMMC CLO 22, Limited Series 2018-22A, Multi-Sector Holdings, Subordinated Structured Notes                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [6],[15]         3,190              
Cost [6],[15]         4,445              
Investment, Identifier [Axis]: AMMC CLO 23, Ltd. Series 2020-23A, Multi-Sector Holdings, Subordinated Structured Notes                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [6],[15]         1,423              
Cost [6],[15]         1,860              
Investment, Identifier [Axis]: AMMC CLO 23, Ltd. Series 2020-23A, Multi-Sector Holdings, Subordinated Structured Notes 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [4],[18]       2,468                
Cost [4],[18]       3,968                
Investment, Identifier [Axis]: AMMC CLO 23, Ltd. Series 2020-23A, Multi-Sector Holdings, Subordinated Structured Notes 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [4],[18]       1,476                
Cost [4],[18]       1,676                
Investment, Identifier [Axis]: APC1 Holding, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 354              
Investment, Identifier [Axis]: APC1 Holding, Diversified Manufacturing, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,505 [3],[4],[5],[19] 2,044 [9],[10],[15],[20]              
Cost       2,314 [3],[4],[5],[19] 1,952 [9],[10],[15],[20]              
Investment, Identifier [Axis]: APOG Bidco Pty Ltd, Healthcare, Second Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,086 [3],[4],[5],[21] 2,073 [9],[10],[15],[22]              
Cost       2,284 [3],[4],[5],[21] 2,279 [9],[10],[15],[22]              
Investment, Identifier [Axis]: AQA Acquisition Holding, Inc., High Tech Industries, Second Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       19,938 [2],[3],[5] 19,140 [8],[9],[10]              
Cost       19,622 [2],[3],[5] 19,564 [8],[9],[10]              
Investment, Identifier [Axis]: ASC Communications, LLC, Media & Entertainment, Class A Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       703 [5] 620 [10],[11]              
Cost       539 [5] 539 [10],[11]              
Investment, Identifier [Axis]: ASC Communications, LLC, Media & Entertainment, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       9,035 [3],[5],[17] 20,920              
Cost       9,001 [3],[5],[17] 20,920              
Investment, Identifier [Axis]: ASC Communications, LLC, Media & Entertainment, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[5],[17],[23]       (9)                
Cost [3],[5],[17],[23]       (12)                
Investment, Identifier [Axis]: ASC Communications, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,089 1,089              
Investment, Identifier [Axis]: ASPEQ Heating Group LLC, Building Products, Air & Heating, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [8],[9],[10]         8,367              
Cost [8],[9],[10]         8,302              
Investment, Identifier [Axis]: ATL II MRO Holdings Inc, Transportation, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       8,250 [2],[3],[5] 8,125 [9],[10],[24]              
Cost       8,071 [2],[3],[5] 8,129 [9],[10],[24]              
Investment, Identifier [Axis]: ATL II MRO Holdings Inc, Transportation, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       0 [2],[3],[5],[23] (42) [9],[10],[24]              
Cost       (35) [2],[3],[5],[23] (41) [9],[10],[24]              
Investment, Identifier [Axis]: ATL II MRO Holdings, Inc., Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,667 1,667              
Investment, Identifier [Axis]: AVSC Holding Corp., Advertising, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[25]         4,416              
Cost [9],[25]         $ 4,505              
Investment, interest rate, paid in kind [9],[25]         0.30%              
Investment, Identifier [Axis]: AVSC Holding Corp., Advertising, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[25]         $ 685              
Cost [9],[25]         $ 700              
Investment, interest rate, paid in kind [9],[25]         1.00%              
Investment, Identifier [Axis]: AVSC Holding Corp., Advertising, First Lien Senior Secured Term Loan 3                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       6,332 $ 5,919              
Cost       $ 6,172 $ 5,703              
Investment, interest rate, paid in kind       10.00% 10.00%              
Investment, Identifier [Axis]: Accelerant Holdings, Banking, Finance, Insurance & Real Estate, Class A Convertible Preferred Equity                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       $ 5,858 [5],[16] $ 5,403 [10],[11]              
Cost       5,000 [5],[16] 5,000 [10],[11]              
Investment, Identifier [Axis]: Accelerant Holdings, Banking, Finance, Insurance & Real Estate, Class A Convertible Preferred Equity1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [10],[11]         1,667              
Cost [10],[11]         1,667              
Investment, Identifier [Axis]: Accelerant Holdings, Banking, Finance, Insurance & Real Estate, Class B Convertible Preferred Equity                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [5],[16]       1,950                
Cost [5],[16]       1,667                
Investment, Identifier [Axis]: Accelerate Learning, Inc., Education Services, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [8],[9],[10]         7,480              
Cost [8],[9],[10]         7,511              
Investment, Identifier [Axis]: Acclime Holdings HK Limited, Business services, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,461 [3],[4],[5],[13] 2,436 [9],[10],[15],[26]              
Cost       2,457 [3],[4],[5],[13] 2,447 [9],[10],[15],[26]              
Investment, Identifier [Axis]: Accurus Aerospace Corporation, Aerospace & Defense, Common Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       512 [5],[16] 436 [10],[11]              
Cost       438 [5],[16] 438 [10],[11]              
Investment, Identifier [Axis]: Accurus Aerospace Corporation, Aerospace & Defense, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       11,768 [2],[3],[5] 12,069 [8],[9],[10]              
Cost       11,994 [2],[3],[5] 12,099 [8],[9],[10]              
Investment, Identifier [Axis]: Accurus Aerospace Corporation, Aerospace & Defense, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,602 [2],[3],[5],[23] 1,116 [8],[9],[10]              
Cost       1,646 [2],[3],[5],[23] 1,122 [8],[9],[10]              
Investment, Identifier [Axis]: Accurus Aerospace Corporation, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       634 1,152              
Investment, Identifier [Axis]: Acogroup, Business Services, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       7,226 [3],[4],[5],[19] 7,276 [9],[10],[15],[27]              
Cost       $ 7,962 [3],[4],[5],[19] 7,782 [9],[10],[15],[27]              
Investment, interest rate, paid in kind [3],[4],[5],[19]       2.30%                
Investment, Identifier [Axis]: Adhefin International, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       $ 419 0              
Investment, Identifier [Axis]: Adhefin International, Industrial Other, First Lien Senior Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[4],[5],[19],[23]       1,778                
Cost [3],[4],[5],[19],[23]       1,760                
Investment, Identifier [Axis]: Adhefin International, Industrial Subordinated Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[4],[5],[19]       300                
Cost [3],[4],[5],[19]       $ 296                
Investment, interest rate, paid in kind [3],[4],[5],[19]       14.40%                
Investment, Identifier [Axis]: Advantage Software Company (The), LLC, Advertising, Printing & Publishing, Class A1 Partnership Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       $ 697 [5],[16] 671 [10],[11]              
Cost       280 [5],[16] 280 [10],[11]              
Investment, Identifier [Axis]: Advantage Software Company (The), LLC, Advertising, Printing & Publishing, Class A2 Partnership Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       180 [5],[16] 173 [10],[11]              
Cost       72 [5],[16] 72 [10],[11]              
Investment, Identifier [Axis]: Advantage Software Company (The), LLC, Advertising, Printing & Publishing, Class B1 Partnership Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       0 [5],[16] 0 [10],[11]              
Cost       9 [5],[16] 9 [10],[11]              
Investment, Identifier [Axis]: Advantage Software Company (The), LLC, Advertising, Printing & Publishing, Class B2 Partnership Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       0 [5],[16] 0 [10],[11]              
Cost       2 [5],[16] 2 [10],[11]              
Investment, Identifier [Axis]: Air Canada 2020-2 Class B Pass Through Trust, Airlines, Structured Secured Note - Class B                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       3,587 4,816              
Cost       3,511 4,841              
Investment, Identifier [Axis]: Air Comm Corporation, LLC, Aerospace & Defense, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       7,633 [2],[3],[5] 12,722 [8],[9],[10]              
Cost       7,661 [2],[3],[5] 12,671 [8],[9],[10]              
Investment, Identifier [Axis]: Air Comm Corporation, LLC, Aerospace & Defense, First Lien Senior Secured Term Loan, 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5]       1,296                
Cost [2],[3],[5]       1,262                
Investment, Identifier [Axis]: AirX Climate Solutions, Inc, Delayed Draw Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,179 0              
Investment, Identifier [Axis]: AirX Climate Solutions, Inc, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       482 0              
Investment, Identifier [Axis]: AirX Climate Solutions, Inc,Diversified Manufacturing, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5],[23]       3,226                
Cost [2],[3],[5],[23]       3,229                
Investment, Identifier [Axis]: AirX Climate Solutions, Inc,Diversified Manufacturing,Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5],[23]       (12)                
Cost [2],[3],[5],[23]       (12)                
Investment, Identifier [Axis]: AlliA Insurance Brokers NV, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,634 0              
Investment, Identifier [Axis]: AlliA Insurance Brokers NV, Insurance, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[4],[5],[19],[23]       3,443                
Cost [3],[4],[5],[19],[23]       3,320                
Investment, Identifier [Axis]: Alpine SG, LLC, High Tech Industries, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       22,792 [2],[3],[5],[18] 22,677 [6],[9],[10],[28]              
Cost       22,679 [2],[3],[5],[18] 22,678 [6],[9],[10],[28]              
Investment, Identifier [Axis]: Alpine US Bidco LLC, Agricultural Products, Second Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[25]         16,704              
Cost [9],[25]         17,692              
Investment, Identifier [Axis]: Amalfi Midco, Healthcare, Class B Common Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,188 [4],[5],[16] 1,121 [10],[11],[15]              
Cost       1,040 [4],[5],[16] 1,040 [10],[11],[15]              
Investment, Identifier [Axis]: Amalfi Midco, Healthcare, Subordinated Loan Notes                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       4,824 [4],[5] 4,303 [8],[10],[15]              
Cost       $ 4,902 [4],[5] $ 4,451 [8],[10],[15]              
Investment, interest rate, paid in kind       9.00% [4],[5] 9.00% [8],[10],[15]              
Investment, Identifier [Axis]: Amalfi Midco, Healthcare, Warrant                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       $ 529 [4],[5],[16] $ 426 [10],[11],[15]              
Cost       4 [4],[5],[16] 4 [10],[11],[15]              
Investment, Identifier [Axis]: Americo Chemical Products, LLC, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       471 0              
Investment, Identifier [Axis]: Americo Chemicals Products, LLC, Chemicals, Common Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [5],[16]       89                
Cost [5],[16]       88                
Investment, Identifier [Axis]: Americo Chemicals Products, LLC, Chemicals, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[5],[17]       1,920                
Cost [3],[5],[17]       1,891                
Investment, Identifier [Axis]: Americo Chemicals Products, LLC, Chemicals, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[5],[17],[23]       (4)                
Cost [3],[5],[17],[23]       (10)                
Investment, Identifier [Axis]: Amtech LLC, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 1,527              
Investment, Identifier [Axis]: Amtech LLC, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       436 545              
Investment, Identifier [Axis]: Amtech LLC, Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,988 [2],[3],[5] 2,222 [9],[10],[25]              
Cost       2,964 [2],[3],[5] 2,205 [9],[10],[25]              
Investment, Identifier [Axis]: Amtech LLC, Technology, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       242 [2],[3],[5],[23] 128 [9],[10],[25]              
Cost       237 [2],[3],[5],[23] 125 [9],[10],[25]              
Investment, Identifier [Axis]: Anagram Holdings, LLC, Chemicals, Plastics, & Rubber, First Lien Senior Secured Note                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value         14,368              
Cost         $ 14,392              
Investment, interest rate, paid in kind         5.00%              
Investment, Identifier [Axis]: AnalytiChem Holding GmbH, Bridge Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 $ 366              
Investment, Identifier [Axis]: AnalytiChem Holding GmbH, Chemicals, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       3,173 [3],[4],[5],[19] 2,330 [9],[10],[15],[20]              
Cost       3,181 [3],[4],[5],[19] 2,382 [9],[10],[15],[20]              
Investment, Identifier [Axis]: AnalytiChem Holding GmbH, Chemicals, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       958 [3],[4],[5],[19] 723 [9],[10],[15],[20]              
Cost       944 [3],[4],[5],[19] 790 [9],[10],[15],[20]              
Investment, Identifier [Axis]: AnalytiChem Holding GmbH, Chemicals, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,678 [3],[4],[5],[19] 5,623 [9],[10],[15],[20]              
Cost       1,585 [3],[4],[5],[19] 5,745 [9],[10],[15],[20]              
Investment, Identifier [Axis]: AnalytiChem Holding GmbH, Chemicals, First Lien Senior Secured Term Loan 3                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,002 [2],[3],[4],[5] 997 [8],[9],[10],[15]              
Cost       1,019 [2],[3],[4],[5] 1,019 [8],[9],[10],[15]              
Investment, Identifier [Axis]: AnalytiChem Holding GmbH, Chemicals, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[15],[20]         (8)              
Cost [9],[10],[15],[20]         (5)              
Investment, Identifier [Axis]: Anju Software, Inc, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       343 0              
Investment, Identifier [Axis]: Anju Software, Inc. Application Software, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[5],[29]       9,404                
Cost [3],[5],[29]       $ 13,255                
Investment, interest rate, paid in kind [3],[5],[29]       8.00%                
Investment, Identifier [Axis]: Anju Software, Inc. Application Software, Super Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[5],[23]       $ 817                
Cost [3],[5],[23]       $ 823                
Investment, interest rate, paid in kind [3],[5],[23]       10.00%                
Investment, Identifier [Axis]: Anju Software, Inc., Application Software, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[25]         11,006              
Cost [9],[10],[25]         13,269              
Investment, Identifier [Axis]: Apex Bidco Limited, Business Equipment & Services, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       $ 1,858 [3],[4],[5],[30] 1,753 [9],[10],[15],[31]              
Cost       1,883 [3],[4],[5],[30] 1,876 [9],[10],[15],[31]              
Investment, Identifier [Axis]: Apex Bidco Limited, Business Equipment & Services, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[4],[5],[30]       1,358                
Cost [3],[4],[5],[30]       1,300                
Investment, Identifier [Axis]: Apex Bidco Limited, Business Equipment & Services, Subordinated Senior Unsecured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       285 [4],[5] 266 [10],[15]              
Cost       $ 303 [4],[5] $ 285 [10],[15]              
Investment, interest rate, paid in kind       8.00% [4],[5] 8.00% [10],[15]              
Investment, Identifier [Axis]: Apidos CLO XXIV, Series 2016-24A, Multi-Sector Holdings, Subordinated Structured Notes                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       $ 5,885 [4],[18] $ 6,635 [6],[15]              
Cost       5,341 [4],[18] 6,934 [6],[15]              
Investment, Identifier [Axis]: Aptus 1829. GmbH, Chemicals, Plastics, and Rubber, Common Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       0 [4],[5],[16] 6 [10],[11],[15]              
Cost       12 [4],[5],[16] 12 [10],[11],[15]              
Investment, Identifier [Axis]: Aptus 1829. GmbH, Chemicals, Plastics, and Rubber, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,982 [3],[4],[5],[32] 5,085 [9],[10],[15],[33]              
Cost       $ 2,476 [3],[4],[5],[32] 5,466 [9],[10],[15],[33]              
Investment, interest rate, paid in kind [3],[4],[5],[32]       1.50%                
Investment, Identifier [Axis]: Aptus 1829. GmbH, Chemicals, Plastics, and Rubber, Preferred Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       $ 4 [4],[5],[16] 110 [10],[11],[15]              
Cost       120 [4],[5],[16] 120 [10],[11],[15]              
Investment, Identifier [Axis]: Apus Bidco Limited, Banking, Finance, Insurance & Real Estate, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       3,621 [3],[4],[5],[30] 3,344 [9],[10],[15],[34]              
Cost       3,899 [3],[4],[5],[30] 3,886 [9],[10],[15],[34]              
Investment, Identifier [Axis]: Aquavista Watersides 2 LTD, Capex / Acquisition Facility                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       2,221 2,543              
Investment, Identifier [Axis]: Aquavista Watersides 2 LTD, Transportation Services, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       5,839 [3],[4],[5],[23],[35] 5,263 [9],[10],[15],[34]              
Cost       6,490 [3],[4],[5],[23],[35] 5,806 [9],[10],[15],[34]              
Investment, Identifier [Axis]: Aquavista Watersides 2 LTD, Transportation Services, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[15],[34]         198              
Cost [9],[10],[15],[34]         175              
Investment, Identifier [Axis]: Aquavista Watersides 2 LTD, Transportation Services, Second Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,706 [3],[4],[5],[35] 1,475 [9],[10],[15],[34]              
Cost       $ 1,869 [3],[4],[5],[35] 1,617 [9],[10],[15],[34]              
Investment, interest rate, paid in kind [3],[4],[5],[35]       15.70%                
Investment, Identifier [Axis]: Arc Education, Consumer Cyclical, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       $ 3,791 [3],[4],[5],[19],[23] 2,969 [9],[10],[15],[20]              
Cost       3,471 [3],[4],[5],[19],[23] 2,794 [9],[10],[15],[20]              
Investment, Identifier [Axis]: Arc Education, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,291 1,900              
Investment, Identifier [Axis]: Arch Global Precision LLC, Industrial Machinery, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       8,993 [2],[3],[5] 9,094 [8],[9],[10]              
Cost       9,082 [2],[3],[5] 9,151 [8],[9],[10]              
Investment, Identifier [Axis]: Archimede, Consumer Services, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       6,304 [3],[4],[5],[19] 6,164 [9],[10],[15],[20]              
Cost       6,475 [3],[4],[5],[19] 6,474 [9],[10],[15],[20]              
Investment, Identifier [Axis]: Argus Bidco Limited, CAF Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       541 789              
Investment, Identifier [Axis]: Argus Bidco Limited, High Tech Industries, Common Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       0 [4],[5],[16] 0 [10],[11],[15]              
Cost       1 [4],[5],[16] 1 [10],[11],[15]              
Investment, Identifier [Axis]: Argus Bidco Limited, High Tech Industries, Equity Loan Notes                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       42 [4],[5] 50 [10],[15]              
Cost       $ 57 [4],[5] $ 51 [10],[15]              
Investment, interest rate, paid in kind       10.00% [4],[5] 10.00% [10],[15]              
Investment, Identifier [Axis]: Argus Bidco Limited, High Tech Industries, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       $ 125 [2],[3],[4],[5] $ 126 [9],[10],[14],[15]              
Cost       129 [2],[3],[4],[5] 126 [9],[10],[14],[15]              
Investment, Identifier [Axis]: Argus Bidco Limited, High Tech Industries, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       307 [3],[4],[5],[19] 1,536 [9],[10],[15],[31]              
Cost       $ 289 [3],[4],[5],[19] 1,514 [9],[10],[15],[31]              
Investment, interest rate, paid in kind [3],[4],[5],[19]       3.30%                
Investment, Identifier [Axis]: Argus Bidco Limited, High Tech Industries, First Lien Senior Secured Term Loan 3                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       $ 1,408 [3],[4],[5],[19] 1,547 [9],[10],[15],[20]              
Cost       1,375 [3],[4],[5],[19] 1,502 [9],[10],[15],[20]              
Investment, Identifier [Axis]: Argus Bidco Limited, High Tech Industries, First Lien Senior Secured Term Loan 4                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[4],[5],[30]       1,632                
Cost [3],[4],[5],[30]       $ 1,565                
Investment, interest rate, paid in kind [3],[4],[5],[30]       3.30%                
Investment, Identifier [Axis]: Argus Bidco Limited, High Tech Industries, First Lien Senior Secured Term Loan 5                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[4],[5],[23],[30]       $ (28)                
Cost [3],[4],[5],[23],[30]       (11)                
Investment, Identifier [Axis]: Argus Bidco Limited, High Tech Industries, Preferred Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       42 [4],[5] 50 [10],[15]              
Cost       $ 57 [4],[5] $ 51 [10],[15]              
Investment, interest rate, paid in kind       10.00% [4],[5] 10.00% [10],[15]              
Investment, Identifier [Axis]: Argus Bidco Limited, High Tech Industries, Second Lien Term Loan Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [4],[5]       $ 734                
Cost [4],[5]       $ 725                
Investment, interest rate, paid in kind [4],[5]       10.50%                
Investment, Identifier [Axis]: Argus Bidco Limited, High Tech Industries, Subordinated Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [10],[15]         $ 487              
Cost [10],[15]         $ 480              
Investment, interest rate, paid in kind [10],[15]         10.50%              
Investment, Identifier [Axis]: Argus Bidco Limited, RCF Bridge Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       $ 0 $ 168              
Investment, Identifier [Axis]: Armstrong Transport Group (Pele Buyer, LLC ), Air Freight & Logistics, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       3,790 [2],[3],[5] 3,896 [8],[9],[10]              
Cost       3,924 [2],[3],[5] 3,950 [8],[9],[10]              
Investment, Identifier [Axis]: Armstrong Transport Group (Pele Buyer, LLC ), Air Freight & Logistics, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       4,709 [2],[3],[5] 4,932 [9],[10],[24]              
Cost       4,858 [2],[3],[5] 4,946 [9],[10],[24]              
Investment, Identifier [Axis]: Astra Bidco Limited, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       604 876              
Investment, Identifier [Axis]: Astra Bidco Limited, Healthcare, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,380 [3],[4],[5],[23],[30] 1,886 [9],[10],[15],[31]              
Cost       2,431 [3],[4],[5],[23],[30] 2,103 [9],[10],[15],[31]              
Investment, Identifier [Axis]: Auxi International, Commercial Finance, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,427 [3],[4],[5],[32] 1,305 [9],[10],[15],[27]              
Cost       1,532 [3],[4],[5],[32] 1,526 [9],[10],[15],[27]              
Investment, Identifier [Axis]: Auxi International, Commercial Finance, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       788 [3],[4],[5],[35] 704 [9],[10],[15],[31]              
Cost       905 [3],[4],[5],[35] 901 [9],[10],[15],[31]              
Investment, Identifier [Axis]: Avance Clinical Bidco Pty Ltd, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,304 1,295              
Investment, Identifier [Axis]: Avance Clinical Bidco Pty Ltd, Healthcare, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,190 [3],[4],[5],[23],[36] 2,298 [9],[10],[15],[37]              
Cost       2,434 [3],[4],[5],[23],[36] 2,417 [9],[10],[15],[37]              
Investment, Identifier [Axis]: Aviation Technical Services, Inc., Aerospace & Defense, Second Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       29,162 [3],[5],[17],[18] 27,794 [6],[9],[10],[25]              
Cost       28,114 [3],[5],[17],[18] $ 27,165 [6],[9],[10],[25]              
Investment, interest rate, paid in kind [6],[9],[10],[25]         6.50%              
Investment, Identifier [Axis]: Azalea Buyer, Inc., Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       644 $ 962              
Investment, Identifier [Axis]: Azalea Buyer, Inc., Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       481 481              
Investment, Identifier [Axis]: Azalea Buyer, Inc., Technology, Common Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       288 [5] 183 [10],[11]              
Cost       192 [5] 192 [10],[11]              
Investment, Identifier [Axis]: Azalea Buyer, Inc., Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       4,809 [2],[3],[5],[23] 4,489 [8],[9],[10]              
Cost       4,767 [2],[3],[5],[23] 4,467 [8],[9],[10]              
Investment, Identifier [Axis]: Azalea Buyer, Inc., Technology, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       (3) [2],[3],[5],[23] (6) [8],[9],[10]              
Cost       (6) [2],[3],[5],[23] (8) [8],[9],[10]              
Investment, Identifier [Axis]: Azalea Buyer, Inc., Technology, Subordinated Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,529 [5] 1,403 [10]              
Cost       $ 1,545 [5] $ 1,409 [10]              
Investment, interest rate, paid in kind       12.00% [5] 12.00% [10]              
Investment, Identifier [Axis]: BPG Holdings IV Corp, Capital Goods, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5]       $ 13,401                
Cost [2],[3],[5]       13,474                
Investment, Identifier [Axis]: BVI Medical, Inc., Healthcare, Second Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       9,541 [3],[5],[19] $ 9,495 [9],[10],[20]              
Cost       9,493 [3],[5],[19] 9,404 [9],[10],[20]              
Investment, Identifier [Axis]: Bariacum S.A, Acquisition Facility                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 2,028              
Investment, Identifier [Axis]: Bariacum S.A, Consumer Products, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       3,314 [3],[4],[5],[32] 5,944 [9],[10],[15],[27]              
Cost       3,248 [3],[4],[5],[32] 6,264 [9],[10],[15],[27]              
Investment, Identifier [Axis]: Benify (Bennevis AB), High Tech Industries, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,096 [3],[4],[5],[38] 1,060 [9],[10],[15],[39]              
Cost       1,163 [3],[4],[5],[38] 1,161 [9],[10],[15],[39]              
Investment, Identifier [Axis]: Beyond Risk Management, Inc., Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       2,007 2,423              
Investment, Identifier [Axis]: Beyond Risk Management, Inc., Other Financial, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,944 [2],[3],[5],[23] 2,493 [9],[10],[25]              
Cost       2,923 [2],[3],[5],[23] 2,499 [9],[10],[25]              
Investment, Identifier [Axis]: Bidwax, Non-durable Consumer Goods, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       7,672 [3],[4],[5],[32] 7,254 [9],[10],[15],[27]              
Cost       8,117 [3],[4],[5],[32] 8,089 [9],[10],[15],[27]              
Investment, Identifier [Axis]: BigHand UK Bidco Limited, High Tech Industries, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[4],[5],[13]       2,020                
Cost [3],[4],[5],[13]       2,109                
Investment, Identifier [Axis]: BigHand UK Bidco Limited, High Tech Industries, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[14],[15]         2,484              
Cost [9],[10],[14],[15]         2,476              
Investment, Identifier [Axis]: BigHand UK Bidco Limited, High Tech Industries, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       353 [2],[3],[4],[5] 792 [9],[10],[15],[31]              
Cost       377 [2],[3],[4],[5] 893 [9],[10],[15],[31]              
Investment, Identifier [Axis]: BigHand UK Bidco Limited, High Tech Industries, First Lien Senior Secured Term Loan 3                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[4],[5],[30]       801                
Cost [3],[4],[5],[30]       896                
Investment, Identifier [Axis]: Biolam Group, Consumer Non-cyclical, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,266 [3],[4],[5],[19],[23] 2,939 [9],[10],[20]              
Cost       $ 2,416 [3],[4],[5],[19],[23] 2,956 [9],[10],[20]              
Investment, interest rate, paid in kind [3],[4],[5],[19],[23]       2.80%                
Investment, Identifier [Axis]: Biolam Group, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       $ 667 4,783              
Investment, Identifier [Axis]: Black Angus Steakhouses, LLC, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 417              
Investment, Identifier [Axis]: Black Angus Steakhouses, LLC, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       7,166 [40] 5,647 [40] 0            
Investment, Identifier [Axis]: Black Angus Steakhouses, LLC, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       $ 4,869 [40] $ 9,147 [40] 0            
Investment, interest rate, paid in kind       10.00% 10.00%              
Investment, Identifier [Axis]: Black Angus Steakhouses, LLC, Hotel, Gaming & Leisure, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       $ 7,166 [3],[5],[17],[18],[41] $ 5,647 [6],[9],[10],[25]              
Cost       $ 6,977 [3],[5],[17],[18],[41] 5,647 [6],[9],[10],[25]              
Investment, interest rate, paid in kind [3],[5],[17],[18],[41]       14.40%                
Investment, Identifier [Axis]: Black Angus Steakhouses, LLC, Hotel, Gaming & Leisure, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       $ 4,869 [5],[18],[29],[41] 9,147 [6],[7],[10]              
Cost       $ 9,628 [5],[18],[29],[41] $ 9,628 [6],[7],[10]              
Investment, interest rate, paid in kind       10.00% [5],[18],[29],[41] 10.00% [6],[7],[10]              
Investment, Identifier [Axis]: Black Angus Steakhouses, LLC, Hotel, Gaming & Leisure, LLC Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       $ 0 [5],[16],[41] $ 0 [6],[10],[11]              
Cost       0 [5],[16],[41] 0 [6],[10],[11]              
Investment, Identifier [Axis]: Black Angus Steakhouses, LLC, LLC Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       0 [40] 0 [40] 0            
Investment, Identifier [Axis]: Bounteous, Inc., Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       2,840 2,840              
Investment, Identifier [Axis]: Bounteous, Inc., Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,605 [2],[3],[5],[23] 1,735 [8],[9],[10]              
Cost       1,818 [2],[3],[5],[23] 1,816 [8],[9],[10]              
Investment, Identifier [Axis]: Bridger Aerospace Group Holdings, LLC, Environmental Industries, Municipal Revenue Bond                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       28,802 28,300              
Cost       27,200 27,200              
Investment, Identifier [Axis]: Bridger Aerospace Group Holdings, LLC, Environmental Industries, Preferred Stock- Series A                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [5]       15,003                
Cost [5]       $ 15,552                
Investment, interest rate, paid in kind [5]       7.00%                
Investment, Identifier [Axis]: Bridger Aerospace Group Holdings, LLC, Environmental Industries, Preferred Stock- Series C                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [10]         14,731              
Cost [10]         $ 14,460              
Investment, interest rate, paid in kind [10]         7.00%              
Investment, Identifier [Axis]: BrightSign LLC, Media & Entertainment, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       $ 4,540 [2],[3],[5] $ 4,724 [8],[9],[10]              
Cost       4,673 [2],[3],[5] 4,728 [8],[9],[10]              
Investment, Identifier [Axis]: BrightSign LLC, Media & Entertainment, LLC units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       930 [3],[5],[16] 1,152 [10],[11]              
Cost       1,107 [3],[5],[16] 1,108 [10],[11]              
Investment, Identifier [Axis]: BrightSign LLC, Media & Entertainment, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       839 [2],[3],[5],[23] (12) [8],[9],[10]              
Cost       878 [2],[3],[5],[23] (11) [8],[9],[10]              
Investment, Identifier [Axis]: BrightSign LLC, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       443 1,329              
Investment, Identifier [Axis]: Brightline Trains Florida LLC, Transportation, Senior Secured Note                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       4,750 [5] 4,350 [10]              
Cost       5,000 [5] 5,000 [10]              
Investment, Identifier [Axis]: Brightpay Limited, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       140 135              
Investment, Identifier [Axis]: Brightpay Limited, Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,250 [3],[4],[5],[19],[23] 2,156 [9],[10],[15],[20]              
Cost       2,303 [3],[4],[5],[19],[23] 2,296 [9],[10],[15],[20]              
Investment, Identifier [Axis]: British Airways 2020-1 Class B Pass Through Trust, Airlines, Structured Secured Note - Class B                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       610 692              
Cost       596 703              
Investment, Identifier [Axis]: British Engineering Services Holdco Limited, Commercial Services & Supplies, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       14,403 [3],[4],[5],[35] 13,454 [9],[10],[15],[31]              
Cost       15,188 [3],[4],[5],[35] 15,133 [9],[10],[15],[31]              
Investment, Identifier [Axis]: Brook & Whittle Holding Corp., Containers, Packaging & Glass, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,596 [2],[3],[5],[18] 2,478 [6],[9],[14]              
Cost       2,779 [2],[3],[5],[18] 2,807 [6],[9],[14]              
Investment, Identifier [Axis]: Brown Machine Group Holdings, LLC, Industrial Equipment, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       5,954 [3],[5],[17] 6,281 [8],[9],[10]              
Cost       6,075 [3],[5],[17] 6,252 [8],[9],[10]              
Investment, Identifier [Axis]: Burgess Point Purchaser Corporation, Auto Parts & Equipment, LP Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       462 [5],[16] 446 [10],[11]              
Cost       455 [5],[16] 455 [10],[11]              
Investment, Identifier [Axis]: Burgess Point Purchaser Corporation, Auto Parts & Equipment, Second Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       4,368 [3],[5],[17] 4,390 [9],[10],[28]              
Cost       4,387 [3],[5],[17] 4,370 [9],[10],[28]              
Investment, Identifier [Axis]: CATAWBA RIVER LIMITED, Finance Companies, Structured - Junior Note                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [10],[15]         5,239              
Cost [10],[15]         4,893              
Investment, Identifier [Axis]: CAi Software, LLC, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       943 943              
Investment, Identifier [Axis]: CAi Software, LLC, Technology, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       4,636 [2],[3],[5],[23] 1,341 [8],[9],[10]              
Cost       4,883 [2],[3],[5],[23] 1,352 [8],[9],[10]              
Investment, Identifier [Axis]: CAi Software, LLC, Technology, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,275 [2],[3],[5],[23] 4,879 [8],[9],[10]              
Cost       1,343 [2],[3],[5],[23] 4,921 [8],[9],[10]              
Investment, Identifier [Axis]: CAi Software, LLC, Technology, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       (61) [2],[3],[5],[23] (24) [8],[9],[10]              
Cost       (13) [2],[3],[5],[23] (16) [8],[9],[10]              
Investment, Identifier [Axis]: CGI Parent, LLC, Business Equipment & Services, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       12,968 [2],[3],[5] 10,377 [9],[10],[25]              
Cost       12,966 [2],[3],[5] 10,510 [9],[10],[25]              
Investment, Identifier [Axis]: CGI Parent, LLC, Business Equipment & Services, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,344 [2],[3],[5] 1,344 [9],[10],[14]              
Cost       1,337 [2],[3],[5] 1,344 [9],[10],[14]              
Investment, Identifier [Axis]: CGI Parent, LLC, Business Equipment & Services, Preferred Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,190 [5],[16] 1,027 [10],[11]              
Cost       722 [5],[16] 551 [10],[11]              
Investment, Identifier [Axis]: CGI Parent, LLC, Business Equipment & Services, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       (33) [2],[3],[5],[7],[23] (49) [9],[10],[25]              
Cost       (24) [2],[3],[5],[7],[23] (29) [9],[10],[25]              
Investment, Identifier [Axis]: CGI Parent, LLC, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,653 1,653              
Investment, Identifier [Axis]: CM Acquisitions Holdings Inc., Internet & Direct Marketing, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       13,399 [2],[3],[5] 18,060 [9],[10],[14]              
Cost       13,663 [2],[3],[5] 18,761 [9],[10],[14]              
Investment, Identifier [Axis]: CMT Opco Holding, LLC (Concept Machine), Distributors, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       3,742 [3],[5],[17] 3,928 [8],[9],[10]              
Cost       $ 4,093 [3],[5],[17] 4,076 [8],[9],[10]              
Investment, interest rate, paid in kind [3],[5],[17]       0.30%                
Investment, Identifier [Axis]: CMT Opco Holding, LLC (Concept Machine), Distributors, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[5],[17]       $ 609                
Cost [3],[5],[17]       $ 657                
Investment, interest rate, paid in kind [3],[5],[17]       0.30%                
Investment, Identifier [Axis]: CMT Opco Holding, LLC (Concept Machine), Distributors, LLC Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       $ 59 [5],[16] 165 [10]              
Cost       506 [5],[16] 352 [10]              
Investment, Identifier [Axis]: CSL DualCom, Tele-communications, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,052 [3],[4],[5],[23],[42] 1,921 [9],[10],[15],[43]              
Cost       1,913 [3],[4],[5],[23],[42] 1,905 [9],[10],[15],[43]              
Investment, Identifier [Axis]: CSL Dualcom, Capex / Acquisition Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       150 142              
Investment, Identifier [Axis]: CT Technologies Intermediate Holdings, Inc., Healthcare, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       4,684 [3],[17],[18] 4,505 [6],[9],[25]              
Cost       4,880 [3],[17],[18] 4,930 [6],[9],[25]              
Investment, Identifier [Axis]: CVL 3, Capital Equipment, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[15],[20]         891              
Cost [9],[10],[15],[20]         938              
Investment, Identifier [Axis]: CVL 3, Capital Equipment, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[14],[15]         1,122              
Cost [9],[10],[14],[15]         1,117              
Investment, Identifier [Axis]: CW Group Holdings, LLC, High Tech Industries, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5]       2,759                
Cost [2],[3],[5]       2,726                
Investment, Identifier [Axis]: CW Group Holdings, LLC, High Tech Industries, LLC Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       289 [5],[16] 204 [10],[11]              
Cost       161 [5],[16] 161 [10],[11]              
Investment, Identifier [Axis]: CW Group Holdings, LLC, High Tech Industries,First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[25]         2,766              
Cost [9],[10],[25]         2,744              
Investment, Identifier [Axis]: Cadent, LLC (f/k/a Cross MediaWorks), Media & Entertainment, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [8],[9],[10]         6,580              
Cost [8],[9],[10]         6,741              
Investment, Identifier [Axis]: Cadent, LLC (f/k/a Cross MediaWorks), Media & Entertainment, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [8],[9],[10]         11,080              
Cost [8],[9],[10]         11,161              
Investment, Identifier [Axis]: Canadian Orthodontic Partners Corp., Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 110              
Investment, Identifier [Axis]: Canadian Orthodontic Partners Corp., Healthcare, Class A Equity                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [10],[11],[15]         292              
Cost       389 [4],[5],[16] 389 [10],[11],[15]              
Investment, Identifier [Axis]: Canadian Orthodontic Partners Corp., Healthcare, Class C - Warrants                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [10],[11],[15]         0              
Cost [10],[11],[15]         0              
Investment, Identifier [Axis]: Canadian Orthodontic Partners Corp., Healthcare, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,322 [3],[4],[5],[44] 1,468 [9],[10],[15],[45]              
Cost       $ 1,858 [3],[4],[5],[44] 1,729 [9],[10],[15],[45]              
Investment, interest rate, paid in kind [3],[4],[5],[44]       3.50%                
Investment, Identifier [Axis]: Caribou Holding Company, LLC, Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       $ 4,240 [2],[3],[4],[5] 4,269 [9],[10],[14],[15]              
Cost       4,273 [2],[3],[4],[5] 4,261 [9],[10],[14],[15]              
Investment, Identifier [Axis]: Caribou Holding Company, LLC, Technology, LLC Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       982 [4],[5],[16] 627 [10],[11],[15]              
Cost       682 [4],[5],[16] 682 [10],[11],[15]              
Investment, Identifier [Axis]: Caribou Holding Company, LLC, Technology, LLC Units - Class X Equity                        
Summary of Investment Holdings [Line Items]                        
Cost [4],[5],[16]       35                
Investment, Identifier [Axis]: Carlson Travel, Inc, Business Travel Management, Common Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [11]         1,339              
Cost [11]         4,194              
Investment, Identifier [Axis]: Carlson Travel, Inc, Business Travel Management, First Lien Senior Secured Note                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value         5,113              
Cost         5,720              
Investment, Identifier [Axis]: Cascade Residential Services LLC, Electric, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[5],[23]       (8)                
Cost [3],[5],[23]       (8)                
Investment, Identifier [Axis]: Cascade Residential Services LLC,Electric,First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[5],[23]       2,567                
Cost [3],[5],[23]       2,571                
Investment, Identifier [Axis]: Cascade Residential Services, LLC, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,985 0              
Investment, Identifier [Axis]: Cascade Residential Services, LLC, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       331 0              
Investment, Identifier [Axis]: Catawba River Limited, Finance Companies, Structured - Junior Note                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [4],[5],[23]       943                
Cost [4],[5],[23]       4,448                
Investment, Identifier [Axis]: Catawba River Limited, Structured Junior Note                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       13,971 12,635              
Investment, Identifier [Axis]: Celebration Bidco, LLC, Chemicals, Plastics, & Rubber, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       6,214                
Cost       6,214                
Investment, Identifier [Axis]: Celebration Bidco, LLC, Common Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [12]       12,177 0              
Investment, Identifier [Axis]: Celebration Bidco, LLC, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [12]       6,214 0              
Investment, Identifier [Axis]: Centralis Finco S.a.r.l., Diversified Financial Services, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       3,144 [3],[4],[5],[19] 820 [9],[10],[15],[20]              
Cost       2,923 [3],[4],[5],[19] 768 [9],[10],[15],[20]              
Investment, Identifier [Axis]: Centralis Finco S.a.r.l., Diversified Financial Services, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[15],[20]         1,158              
Cost [9],[10],[15],[20]         1,151              
Investment, Identifier [Axis]: Centralis Finco S.a.r.l., Incremental CAF Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 1,028              
Investment, Identifier [Axis]: Ceres Pharma NV, Pharma-ceuticals, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       3,307 [3],[4],[5],[32] 3,139 [9],[10],[15],[27]              
Cost       3,278 [3],[4],[5],[32] 3,264 [9],[10],[15],[27]              
Investment, Identifier [Axis]: Charming Charlie LLC, Common Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value         0 0            
Investment, Identifier [Axis]: Charming Charlie LLC, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value         0 0            
Investment, Identifier [Axis]: Charming Charlie LLC, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value         0 0            
Investment, Identifier [Axis]: Charming Charlie LLC, First Lien Senior Secured Term Loan 3                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value         0 0            
Investment, Identifier [Axis]: Charming Charlie LLC, First Lien Senior Secured Term Loan 4                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value         0 0            
Investment, Identifier [Axis]: Cineworld Group PLC, Leisure Products, Warrants                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [10],[11],[15]         0              
Cost [10],[11],[15]         102              
Investment, Identifier [Axis]: Classic Collision (Summit Buyer, LLC), Auto Collision Repair Centers, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       6,602 [2],[3],[5],[23] 6,189 [9],[10],[25]              
Cost       6,522 [2],[3],[5],[23] 6,182 [9],[10],[25]              
Investment, Identifier [Axis]: Classic Collision (Summit Buyer, LLC), Auto Collision Repair Centers, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5]       599                
Cost [2],[3],[5]       596                
Investment, Identifier [Axis]: Classic Collision (Summit Buyer, LLC), Auto Collision Repair Centers,First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[25]         523              
Cost [9],[10],[25]         522              
Investment, Identifier [Axis]: Classic Collision (Summit Buyer, LLC), Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       2,734 78              
Investment, Identifier [Axis]: Coastal Marina Holdings, LLC, Hotel, Gaming & Leisure ,LLC Units, Common Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       12,177                
Cost       12,177                
Investment, Identifier [Axis]: Coastal Marina Holdings, LLC, Hotel, Gaming & Leisure, Subordinated Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [5]       6,868                
Cost [5]       $ 6,919                
Investment, interest rate, paid in kind [5]       10.00%                
Investment, Identifier [Axis]: Coastal Marina Holdings, LLC, Hotel, Gaming & Leisure, Subordinated Term Loan2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [5]       $ 15,649                
Cost [5]       15,595                
Investment, Identifier [Axis]: Coastal Marina Holdings, LLC, LLC Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [12]       12,160 [5],[16] 0              
Cost [5],[16]       10,944                
Investment, Identifier [Axis]: Coastal Marina Holdings, LLC, Other Financial, LLC Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [10],[11]         10,729              
Cost [10],[11]         9,093              
Investment, Identifier [Axis]: Coastal Marina Holdings, LLC, Other Financial, Subordinated Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [10]         6,036              
Cost [10]         $ 6,054              
Investment, interest rate, paid in kind [10]         10.00%              
Investment, Identifier [Axis]: Coastal Marina Holdings, LLC, Other Financial, Subordinated Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [10]         $ 15,528              
Cost [10]         15,509              
Investment, Identifier [Axis]: Coastal Marina Holdings, LLC, Subordinated Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [12]       15,649 0              
Investment, Identifier [Axis]: Coastal Marina Holdings, LLC, Subordinated Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [12]       $ 6,868 0              
Investment, interest rate, paid in kind       10.00%                
Investment, Identifier [Axis]: Cobham Slip Rings SAS, Diversified Manufacturing, Diversified Manufacturing                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [8],[9],[10],[15]         1,270              
Cost [8],[9],[10],[15]         1,276              
Investment, Identifier [Axis]: Cobham Slip Rings SAS, Diversified Manufacturing, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[4],[5]       $ 1,294                
Cost [2],[3],[4],[5]       1,281                
Investment, Identifier [Axis]: Command Alkon (Project Potter Buyer, LLC), Software, Class B Partnership Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       176 [5],[16] 196 [10],[11]              
Cost       0 [5],[16] 0 [10],[11]              
Investment, Identifier [Axis]: Command Alkon (Project Potter Buyer, LLC), Software, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       13,345 [3],[5],[17] 13,302 [9],[10],[28]              
Cost       13,236 [3],[5],[17] 13,316 [9],[10],[28]              
Investment, Identifier [Axis]: Compass Precision, LLC, Aerospace & Defense, LLC Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       142 [5],[16] 159 [10],[11]              
Cost       125 [5],[16] 125 [10],[11]              
Investment, Identifier [Axis]: Compass Precision, LLC, Aerospace & Defense, Senior Subordinated Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       622 [5] 369 [10]              
Cost       $ 632 [5] $ 371 [10]              
Investment, interest rate, paid in kind       1.00% [5] 1.00% [10]              
Investment, Identifier [Axis]: Comply365, LLC, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       $ 1,101 $ 935              
Investment, Identifier [Axis]: Comply365, LLC, Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       5,525 [2],[3],[5] 13,446 [9],[10],[24]              
Cost       5,525 [2],[3],[5] 13,407 [9],[10],[24]              
Investment, Identifier [Axis]: Comply365, LLC, Technology, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5]       12,997                
Cost [2],[3],[5]       13,061                
Investment, Identifier [Axis]: Comply365, LLC, Technology, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       (22) [2],[3],[5],[23] 148 [9],[10],[24]              
Cost       (16) [2],[3],[5],[23] 146 [9],[10],[24]              
Investment, Identifier [Axis]: Contabo Finco S.À R.L, Internet Software & Services, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       5,103 [3],[4],[5],[19] 4,845 [9],[10],[15],[20]              
Cost       4,539 [3],[4],[5],[19] 4,524 [9],[10],[15],[20]              
Investment, Identifier [Axis]: Core Scientific, Inc., Technology, Common Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       133 [4],[16] 7 [11]              
Cost       296 [4],[16] 296 [11]              
Investment, Identifier [Axis]: Core Scientific, Inc., Technology, Equipment Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [4],[5],[29]       22,976                
Cost [4],[5],[29]       29,619                
Investment, Identifier [Axis]: Core Scientific, Inc., Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [7],[10]         11,118              
Cost [7],[10]         29,619              
Investment, Identifier [Axis]: Coyo Uprising GmbH, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       434 419              
Investment, Identifier [Axis]: Coyo Uprising GmbH, Technology, Class A Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       211 [4],[5],[16] 196 [10],[11],[15]              
Cost       205 [4],[5],[16] 205 [10],[11],[15]              
Investment, Identifier [Axis]: Coyo Uprising GmbH, Technology, Class B Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       505 [4],[5],[16] 497 [10],[11],[15]              
Cost       446 [4],[5],[16] 446 [10],[11],[15]              
Investment, Identifier [Axis]: Coyo Uprising GmbH, Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       4,659 [3],[4],[5],[19],[23] 4,233 [9],[10],[15],[27]              
Cost       $ 4,945 [3],[4],[5],[19],[23] $ 4,638 [9],[10],[15],[27]              
Investment, interest rate, paid in kind       3.40% [3],[4],[5],[19],[23] 3.50% [9],[10],[15],[27]              
Investment, Identifier [Axis]: Custom Alloy Corporation, Manufacturer of Pipe Fittings & Forgings, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [7],[10],[46]         $ 189              
Cost [7],[10],[46]         $ 4,222              
Investment, interest rate, paid in kind [7],[10],[46]         15.00%              
Investment, Identifier [Axis]: Custom Alloy Corporation, Manufacturer of Pipe Fittings & Forgings, Second Lien Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [7],[10],[46]         $ 1,997              
Cost [7],[10],[46]         $ 42,162              
Investment, interest rate, paid in kind [7],[10],[46]         15.00%              
Investment, Identifier [Axis]: DISA Holdings Corp., Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       $ 1,072 $ 1,368              
Investment, Identifier [Axis]: DISA Holdings Corp., Other Industrial, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       5,944 [3],[5],[17],[23] 5,491 [9],[10],[28]              
Cost       5,768 [3],[5],[17],[23] 5,496 [9],[10],[28]              
Investment, Identifier [Axis]: DISA Holdings Corp., Other Industrial, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       90 [3],[5],[17],[23] 0 [9],[10],[28]              
Cost       79 [3],[5],[17],[23] 0 [9],[10],[28]              
Investment, Identifier [Axis]: DISA Holdings Corp., Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       339 416              
Investment, Identifier [Axis]: DataOnline Corp., High Tech Industries, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [6],[8],[9],[10]         14,259              
Cost [6],[8],[9],[10]         14,550              
Investment, Identifier [Axis]: DataOnline Corp., High Tech Industries, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [6],[8],[9],[10]         2,100              
Cost [6],[8],[9],[10]         2,143              
Investment, Identifier [Axis]: DataServ Integrations, LLC, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       481 481              
Investment, Identifier [Axis]: DataServ Integrations, LLC, Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,873 [2],[3],[5] 1,875 [9],[10],[14]              
Cost       1,863 [2],[3],[5] 1,876 [9],[10],[14]              
Investment, Identifier [Axis]: DataServ Integrations, LLC, Technology, Partnership Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       96 [5],[16] 96 [10],[11]              
Cost       96 [5],[16] 96 [10],[11]              
Investment, Identifier [Axis]: DataServ Integrations, LLC, Technology, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       (7) [2],[3],[5],[23] (11) [9],[10],[14]              
Cost       (8) [2],[3],[5],[23] (10) [9],[10],[14]              
Investment, Identifier [Axis]: DecksDirect, LLC, Building Materials, Common Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       41 [5],[16] 48 [10],[11]              
Cost       55 [5],[16] 55 [10],[11]              
Investment, Identifier [Axis]: DecksDirect, LLC, Building Materials, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,638 [3],[5],[17] 690 [9],[10],[25]              
Cost       1,644 [3],[5],[17] 688 [9],[10],[25]              
Investment, Identifier [Axis]: DecksDirect, LLC, Building Materials, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       (9) [3],[5],[17],[23] (3) [9],[10],[25]              
Cost       (6) [3],[5],[17],[23] (3) [9],[10],[25]              
Investment, Identifier [Axis]: DecksDirect, LLC, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       381 218              
Investment, Identifier [Axis]: Distinct Holdings, Inc., Systems Software, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       6,416 [2],[3],[5] 6,096 [8],[9],[10]              
Cost       6,540 [2],[3],[5] 6,860 [8],[9],[10]              
Investment, Identifier [Axis]: Dragon Bidco, Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[4],[5],[32]       2,734                
Cost [3],[4],[5],[32]       2,828                
Investment, Identifier [Axis]: Dragon Bidco, Technology, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[15],[20]         2,515              
Cost [9],[10],[15],[20]         2,828              
Investment, Identifier [Axis]: Dragon Bidco, Technology, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[15],[27]         1,153              
Cost [9],[10],[15],[27]         1,170              
Investment, Identifier [Axis]: DreamStart Bidco SAS (d/b/a SmartTrade), Acquisition Facility                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 579              
Investment, Identifier [Axis]: DreamStart Bidco SAS (d/b/a SmartTrade), Diversified Financial Services, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,349 [3],[4],[5],[19] 2,247 [9],[10],[15],[20]              
Cost       2,324 [3],[4],[5],[19] 2,305 [9],[10],[15],[20]              
Investment, Identifier [Axis]: Dryden 43 Senior Loan Fund, Series 2016-43A, Multi-Sector Holdings, Subordinated Structured Notes                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,647 [4],[18] 2,084 [6],[15]              
Cost       2,056 [4],[18] 2,329 [6],[15]              
Investment, Identifier [Axis]: Dryden 49 Senior Loan Fund, Series 2017-49A, Multi-Sector Holdings, Subordinated Structured Notes                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       3,319 [4],[16],[18] 4,267 [6],[15]              
Cost       4,791 [4],[16],[18] 6,790 [6],[15]              
Investment, Identifier [Axis]: Dune Group, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       439 624              
Investment, Identifier [Axis]: Dune Group, Health Care Equipment, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       115 [3],[4],[5],[23] 111 [9],[10],[15],[20]              
Cost       115 [3],[4],[5],[23] 109 [9],[10],[15],[20]              
Investment, Identifier [Axis]: Dune Group, Health Care Equipment, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,401 [2],[3],[4],[5] 1,209 [8],[9],[10],[15]              
Cost       1,419 [2],[3],[4],[5] 1,212 [8],[9],[10],[15]              
Investment, Identifier [Axis]: Dunlipharder B.V., Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       993 [2],[3],[4],[5] 988 [9],[10],[14],[15]              
Cost       988 [2],[3],[4],[5] 986 [9],[10],[14],[15]              
Investment, Identifier [Axis]: Dwyer Instruments, Inc., Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 5,164              
Investment, Identifier [Axis]: Dwyer Instruments, Inc., Electric, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5]       14,479                
Cost [2],[3],[5]       14,568                
Investment, Identifier [Axis]: Dwyer Instruments, Inc., Electric, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [8],[9],[10]         25,287              
Cost [8],[9],[10]         25,257              
Investment, Identifier [Axis]: EFC International, Automotive, Common Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [5],[16]       301                
Cost [5],[16]       231                
Investment, Identifier [Axis]: EFC International, Automotive, Senior Unsecured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [5]       764                
Cost [5]       $ 759                
Investment, interest rate, paid in kind [5]       2.50%                
Investment, Identifier [Axis]: EMI Porta Holdco LLC, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       $ 0 9,272              
Investment, Identifier [Axis]: EMI Porta Holdco LLC, Diversified Manufacturing, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       11,155 [2],[3],[5] 12,008 [8],[9],[10]              
Cost       12,371 [2],[3],[5] 12,272 [8],[9],[10]              
Investment, Identifier [Axis]: EMI Porta Holdco LLC, Diversified Manufacturing, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,233 [2],[3],[5],[23] 1,409 [8],[9],[10]              
Cost       2,524 [2],[3],[5],[23] 1,446 [8],[9],[10]              
Investment, Identifier [Axis]: EMI Porta Holdco LLC, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       403 1,471              
Investment, Identifier [Axis]: EPS NASS Parent, Inc., Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 257              
Investment, Identifier [Axis]: EPS NASS Parent, Inc., Electrical Components & Equipment, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       5,740 [2],[3],[5] 6,024 [8],[9],[10]              
Cost       5,936 [2],[3],[5] 5,978 [8],[9],[10]              
Investment, Identifier [Axis]: Echo Global Logistics, Inc., Air Transportation, Partnership Equity                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       491 [5],[16] 933 [10],[11]              
Cost       531 [5],[16] 531 [10],[11]              
Investment, Identifier [Axis]: Echo Global Logistics, Inc., Air Transportation, Second Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       8,844 [2],[3],[5] 9,100 [8],[9],[10]              
Cost       9,336 [2],[3],[5] 9,320 [8],[9],[10]              
Investment, Identifier [Axis]: Eclipse Business Capital Holdings LLC, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value                 $ 4,500      
Investment, Identifier [Axis]: Eclipse Business Capital Holdings LLC, Revolver, Funded                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       5,500 5,300              
Investment, Identifier [Axis]: Eclipse Business Capital Holdings LLC, Revolver, Unfunded                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value             $ 22,700   13,600      
Investment, Identifier [Axis]: Eclipse Business Capital Holdings LLC, Second Lien Senior Secured Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value                 $ 89,800      
Investment, Identifier [Axis]: Eclipse Business Capital, LLC, Banking, Finance, Insurance & Real Estate, LLC Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       145,799 [5] 135,066 [10]              
Cost       92,963 [5] 93,230 [10]              
Investment, Identifier [Axis]: Eclipse Business Capital, LLC, Banking, Finance, Insurance & Real Estate, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       5,545 [5],[17],[23] 5,273 [10],[25]              
Cost       5,457 [5],[17],[23] 5,165 [10],[25]              
Investment, Identifier [Axis]: Eclipse Business Capital, LLC, Banking, Finance, Insurance & Real Estate, Second Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       4,545 [5] 4,545 [10]              
Cost       4,513 [5] 4,508 [10]              
Investment, Identifier [Axis]: Eclipse Business Capital, LLC, LLC units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       145,799 [12] 135,066 [12] 92,668            
Investment, Identifier [Axis]: Eclipse Business Capital, LLC, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       17,182 17,455              
Total investments at fair value       5,545 [12] 5,273 [12] 1,818            
Investment, Identifier [Axis]: Eclipse Business Capital, LLC, Second Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       4,545 [12] 4,545 [12] 4,738            
Investment, Identifier [Axis]: Ellkay, LLC, Healthcare and Pharmaceuticals, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       4,430 [2],[3],[5] 4,893 [8],[9],[10]              
Cost       4,835 [2],[3],[5] 4,868 [8],[9],[10]              
Investment, Identifier [Axis]: Entact Environmental Services, Inc., Environmental Industries, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       7,245 [2],[3],[5] 5,529 [8],[9],[10]              
Cost       7,189 [2],[3],[5] 5,511 [8],[9],[10]              
Investment, Identifier [Axis]: Eurofins Digital Testing International LUX Holding SARL, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       2,731 2,639              
Investment, Identifier [Axis]: Eurofins Digital Testing International LUX Holding SARL, Delayed Draw Term Loan1                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 528              
Investment, Identifier [Axis]: Eurofins Digital Testing International LUX Holding SARL, Technology, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,047 [3],[4],[5],[19],[23] 1,352 [9],[10],[15],[20]              
Cost       $ 1,414 [3],[4],[5],[19],[23] 1,338 [9],[10],[15],[20]              
Investment, interest rate, paid in kind [3],[4],[5],[19],[23]       2.80%                
Investment, Identifier [Axis]: Eurofins Digital Testing International LUX Holding SARL, Technology, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       $ 700 [2],[3],[4],[5] 745 [9],[10],[14],[15]              
Cost       $ 780 [2],[3],[4],[5] 745 [9],[10],[14],[15]              
Investment, interest rate, paid in kind [2],[3],[4],[5]       2.80%                
Investment, Identifier [Axis]: Eurofins Digital Testing International LUX Holding SARL, Technology, First Lien Senior Secured Term Loan 3                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       $ 2,096 [3],[4],[5],[30] 2,111 [9],[10],[15],[31]              
Cost       $ 2,254 [3],[4],[5],[30] 2,158 [9],[10],[15],[31]              
Investment, interest rate, paid in kind [3],[4],[5],[30]       2.80%                
Investment, Identifier [Axis]: Eurofins Digital Testing International LUX Holding SARL, Technology, First Lien Senior Secured Term Loan 4                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [10],[15]         513              
Cost [10],[15]         $ 507              
Investment, interest rate, paid in kind [10],[15]         11.50%              
Investment, Identifier [Axis]: Eurofins Digital Testing International LUX Holding SARL, Technology, Senior Subordinated Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [4],[5]       $ 543                
Cost [4],[5]       $ 592                
Investment, interest rate, paid in kind [4],[5]       11.50%                
Investment, Identifier [Axis]: Events Software BidCo Pty Ltd, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       $ 620 $ 640              
Investment, Identifier [Axis]: Events Software BidCo Pty Ltd, Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,535 [3],[4],[5],[23],[36] 1,573 [9],[10],[15],[47]              
Cost       1,865 [3],[4],[5],[23],[36] 1,853 [9],[10],[15],[47]              
Investment, Identifier [Axis]: Events Software BidCo Pty Ltd, Technology, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[4],[5],[36]       20                
Cost [3],[4],[5],[36]       21                
Investment, Identifier [Axis]: Express Wash Acquisition Company, LLC, Consumer Cyclical, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       6,324 [2],[3],[5] 7,106 [9],[10],[28]              
Cost       6,300 [2],[3],[5] 7,092 [9],[10],[28]              
Investment, Identifier [Axis]: Express Wash Acquisition Company, LLC, Consumer Cyclical, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       138 [2],[3],[5],[23] 137 [9],[10],[28]              
Cost       137 [2],[3],[5],[23] 136 [9],[10],[28]              
Investment, Identifier [Axis]: Express Wash Acquisition Company, LLC, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       115 115              
Investment, Identifier [Axis]: F24 (Stairway BidCo GmbH), Acquisition Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 246              
Investment, Identifier [Axis]: F24 (Stairway BidCo Gmbh), Software Services, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,933 [3],[4],[5],[19] 1,644 [9],[10],[15],[20]              
Cost       2,071 [3],[4],[5],[19] 1,792 [9],[10],[15],[20]              
Investment, Identifier [Axis]: FSS Buyer LLC, Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       4,768 [2],[3],[5] 6,767 [9],[10],[25]              
Cost       4,721 [2],[3],[5] 6,728 [9],[10],[25]              
Investment, Identifier [Axis]: FSS Buyer LLC, Technology, LP Interest                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       16 [5],[16] 17 [10],[11]              
Cost       12 [5],[16] 12 [10],[11]              
Investment, Identifier [Axis]: FSS Buyer LLC, Technology, LP Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       72 [5],[16] 75 [10],[11]              
Cost       51 [5],[16] 51 [10],[11]              
Investment, Identifier [Axis]: Faraday, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       990 0              
Investment, Identifier [Axis]: Faraday, Healthcare, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[4],[23]       1,632                
Cost [3],[4],[23]       1,591                
Investment, Identifier [Axis]: Ferrellgas L.P., Oil & Gas Equipment & Services, Opco Preferred Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,670 [5] 2,742 [10]              
Cost       2,799 [5] 2,799 [10]              
Investment, Identifier [Axis]: FinThrive Software Intermediate Holdings Inc., Business Equipment & Services, Preferred Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       5,266 [5] 6,084 [10]              
Cost       $ 8,809 [5] $ 7,892 [10]              
Investment, interest rate, paid in kind       11.00% [5] 11.00% [10]              
Investment, Identifier [Axis]: Finaxy Holding, Banking, Subordinated Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [4],[5]       $ 2,009                
Cost [4],[5]       $ 1,943                
Investment, interest rate, paid in kind [4],[5]       10.30%                
Investment, Identifier [Axis]: Finaxy Holding,Banking,First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[4],[5],[19]       $ 4,431                
Cost [3],[4],[5],[19]       4,288                
Investment, Identifier [Axis]: Fineline Technologies, Inc, Consumer Services, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5]       1,275                
Cost [2],[3],[5]       1,264                
Investment, Identifier [Axis]: Fineline Technologies, Inc., Consumer Services, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [8],[9],[10]         $ 1,270              
Cost [8],[9],[10]         1,274              
Investment, Identifier [Axis]: Fineline Technologies, Inc., Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 180              
Investment, Identifier [Axis]: Finexvet, Consumer Cyclical, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       4,230 [3],[4],[5],[23],[32] 2,329 [9],[10],[15],[27]              
Cost       4,166 [3],[4],[5],[23],[32] 2,379 [9],[10],[15],[27]              
Investment, Identifier [Axis]: Finexvet, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       650 0              
Investment, Identifier [Axis]: FitzMark Buyer, LLC, Cargo & Transportation, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       4,073 [3],[5],[17] 4,165 [8],[9],[10]              
Cost       4,128 [3],[5],[17] 4,164 [8],[9],[10]              
Investment, Identifier [Axis]: Five Star Holding LLC, Packaging, LLC Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       855 [5],[16] 962 [10],[11]              
Cost       967 [5],[16] 967 [10],[11]              
Investment, Identifier [Axis]: Five Star Holding LLC, Packaging, Second Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       13,404 [2],[3],[5] 13,295 [9],[10],[14]              
Cost       13,461 [2],[3],[5] 13,434 [9],[10],[14]              
Investment, Identifier [Axis]: Flexential Issuer, LLC, Information Technology, Structured Secured Note - Class C                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       13,187 13,827              
Cost       14,862 14,839              
Investment, Identifier [Axis]: Flywheel Re Segregated Portfolio 2022-4, Investment Funds, Preferred Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       3,196 [4],[5],[16] 1,932 [10],[11],[15]              
Cost       2,828 [4],[5],[16] 1,922 [10],[11],[15]              
Investment, Identifier [Axis]: Footco 40 Limited, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       524 766              
Investment, Identifier [Axis]: Footco 40 Limited, Media & Entertainment, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,808 [3],[4],[5],[23],[30] 1,437 [9],[10],[15],[31]              
Cost       1,849 [3],[4],[5],[23],[30] 1,561 [9],[10],[15],[31]              
Investment, Identifier [Axis]: Fortis Payment Systems, LLC, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 925              
Investment, Identifier [Axis]: Fortis Payment Systems, LLC, Other Financial, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,480 [2],[3],[5] 1,513 [9],[10],[28]              
Cost       2,443 [2],[3],[5] 1,516 [9],[10],[28]              
Investment, Identifier [Axis]: FragilePak LLC, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 2,354              
Investment, Identifier [Axis]: FragilePak LLC, Transportation Services, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       4,384 [2],[3],[5] 4,638 [8],[9],[10]              
Cost       4,512 [2],[3],[5] 4,491 [8],[9],[10]              
Investment, Identifier [Axis]: FragilePak LLC, Transportation Services, Partnership Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       632 [5],[16] 1,179 [10],[11]              
Cost       938 [5],[16] 938 [10],[11]              
Investment, Identifier [Axis]: Front Line Power Construction LLC, Construction Machinery, Common Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [11]         158              
Cost [11]         320              
Investment, Identifier [Axis]: Front Line Power Construction LLC, Construction Machinery, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [8],[9],[10]         4,871              
Cost [8],[9],[10]         4,089              
Investment, Identifier [Axis]: GB EAGLE BUYER, INC., Capital Goods, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[14]         16,271              
Cost [9],[10],[14]         16,276              
Investment, Identifier [Axis]: GB EAGLE BUYER, INC., Capital Goods, Partnership Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [10],[11]         687              
Cost [10],[11]         687              
Investment, Identifier [Axis]: GB EAGLE BUYER, INC., Capital Goods, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[14]         (77)              
Cost [9],[10],[14]         (76)              
Investment, Identifier [Axis]: GB EAGLE BUYER, INC., Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       2,581 2,581              
Investment, Identifier [Axis]: GB Eagle Buyer, Inc., Capital Goods, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5]       10,573                
Cost [2],[3],[5]       10,361                
Investment, Identifier [Axis]: GB Eagle Buyer, Inc., Capital Goods, Partnership Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [5],[16]       880                
Cost [5],[16]       687                
Investment, Identifier [Axis]: GB Eagle Buyer, Inc., Capital Goods, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5],[23]       (15)                
Cost [2],[3],[5],[23]       (64)                
Investment, Identifier [Axis]: GPNZ II GmbH, Healthcare, Common Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [4],[5],[16]       0                
Cost [4],[5],[16]       0                
Investment, Identifier [Axis]: GPNZ II GmbH, Healthcare, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[4],[5],[48]       265                
Cost [3],[4],[5],[48]       446                
Investment, Identifier [Axis]: GPNZ II GmbH, Healthcare, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [4],[5],[23]       124                
Cost [4],[5],[23]       $ 122                
Investment, interest rate, paid in kind [4],[5],[23]       10.00%                
Investment, Identifier [Axis]: GPZN II GmbH, CAF Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       $ 0 560              
Investment, Identifier [Axis]: GPZN II GmbH, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       53 0              
Investment, Identifier [Axis]: GPZN II GmbH, Healthcare, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[15],[33]         375              
Cost [9],[10],[15],[33]         429              
Investment, Identifier [Axis]: GROUPE PRODUCT LIFE, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 441              
Investment, Identifier [Axis]: GTM Intermediate Holdings, Inc., Medical Equipment Manufacturer, Second Lien Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [10],[46]         10,442              
Cost [10],[46]         $ 10,587              
Investment, interest rate, paid in kind [10],[46]         1.00%              
Investment, Identifier [Axis]: GTM Intermediate Holdings, Inc., Medical Equipment Manufacturer, Series A Preferred Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [10],[11],[46]         $ 2,252              
Cost [10],[11],[46]         2,166              
Investment, Identifier [Axis]: GTM Intermediate Holdings, Inc., Medical Equipment Manufacturer, Series C Preferred Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [10],[11],[46]         2,158              
Cost [10],[11],[46]         1,081              
Investment, Identifier [Axis]: Global Academic Group Limited, Industrial Other, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,478 [3],[4],[5],[49] 2,438 [9],[10],[15],[47]              
Cost       2,515 [3],[4],[5],[49] 2,502 [9],[10],[15],[47]              
Investment, Identifier [Axis]: Global Academic Group Limited, Industrial Other, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       4,295 [3],[4],[5],[23],[50] 4,242 [9],[10],[15],[51]              
Cost       4,228 [3],[4],[5],[23],[50] 4,202 [9],[10],[15],[51]              
Investment, Identifier [Axis]: Global Academic Group Limited, Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       414 451              
Investment, Identifier [Axis]: Gojo Industries, Inc. ,Industrial Other,First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5]       12,359                
Cost [2],[3],[5]       $ 12,374                
Investment, interest rate, paid in kind [2],[3],[5]       4.50%                
Investment, Identifier [Axis]: Greenhill BV, Capex Acquisition Facility                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       $ 120 255              
Investment, Identifier [Axis]: Greenhill II BV, Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       894 [3],[4],[5],[19],[23] 716 [9],[10],[15],[20]              
Cost       815 [3],[4],[5],[19],[23] 672 [9],[10],[15],[20]              
Investment, Identifier [Axis]: Groupe Guemas,Brokerage, Asset Managers & Exchanges ,First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[4],[5]       5,006                
Cost [3],[4],[5]       4,806                
Investment, Identifier [Axis]: Groupe Product Life, Consumer Non-cyclical, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,059 [3],[4],[5],[19] 598 [9],[10],[15],[20]              
Cost       1,006 [3],[4],[5],[19] 553 [9],[10],[15],[20]              
Investment, Identifier [Axis]: Gulf Finance, LLC, Oil & Gas Exploration & Production, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       570 [2],[3] 772 [9],[25]              
Cost       553 [2],[3] 797 [9],[25]              
Investment, Identifier [Axis]: Gusto Aus BidCo Pty Ltd, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       167 223              
Investment, Identifier [Axis]: Gusto Aus BidCo Pty Ltd., Consumer Non-Cyclical, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,235 [3],[4],[5],[23],[49] 2,136 [9],[10],[37]              
Cost       2,083 [3],[4],[5],[23],[49] 2,016 [9],[10],[37]              
Investment, Identifier [Axis]: HEKA INVEST, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       575 555              
Investment, Identifier [Axis]: HEKA Invest, Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       5,080 [3],[4],[5],[19],[23] 4,846 [9],[10],[15],[20]              
Cost       4,478 [3],[4],[5],[19],[23] 4,461 [9],[10],[15],[20]              
Investment, Identifier [Axis]: HTI Technology & Industries, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       2,045 2,045              
Investment, Identifier [Axis]: HTI Technology & Industries, Electronic Component Manufacturing, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5],[23]       11,355                
Cost [2],[3],[5],[23]       11,311                
Investment, Identifier [Axis]: HTI Technology & Industries, Electronic Component Manufacturing, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       (7) [2],[3],[5],[23] (18) [9],[10],[14]              
Cost       (11) [2],[3],[5],[23] (18) [9],[10],[14]              
Investment, Identifier [Axis]: HTI Technology & Industries, Electronic Component Manufacturing, Second Lien Note                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[14]         11,363              
Cost [9],[10],[14]         11,361              
Investment, Identifier [Axis]: HTI Technology & Industries, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,364 1,364              
Investment, Identifier [Axis]: HW Holdco, LLC (Hanley Wood LLC), Advertising, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       10,816 [2],[3],[5] 4,928 [8],[9],[10]              
Cost       11,133 [2],[3],[5] 4,946 [8],[9],[10]              
Investment, Identifier [Axis]: HW Holdco, LLC (Hanley Wood LLC), Advertising, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[25]         5,834              
Cost [9],[10],[25]         5,832              
Investment, Identifier [Axis]: HW Holdco, LLC (Hanley Wood LLC), Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 913              
Investment, Identifier [Axis]: HeartHealth Bidco Pty Ltd, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       253 313              
Investment, Identifier [Axis]: HeartHealth Bidco Pty Ltd, Healthcare, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       674 [3],[4],[5],[23],[49] 598 [10],[15],[47]              
Cost       632 [3],[4],[5],[23],[49] 569 [10],[15],[47]              
Investment, Identifier [Axis]: Heartland Veterinary Partners, LLC, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 267              
Investment, Identifier [Axis]: Heartland Veterinary Partners, LLC, Healthcare, Subordinated Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       11,012 [5] 1,151 [10]              
Cost       $ 12,300 [5] $ 1,161 [10]              
Investment, interest rate, paid in kind       11.00% [5] 11.00% [10]              
Investment, Identifier [Axis]: Heartland Veterinary Partners, LLC, Healthcare, Subordinated Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [10]         $ 9,183              
Cost [10]         $ 9,238              
Investment, interest rate, paid in kind [10]         11.00%              
Investment, Identifier [Axis]: Heartland, LLC, Business Services, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [8],[9],[10]         $ 13,795              
Cost [8],[9],[10]         13,884              
Investment, Identifier [Axis]: Heavy Construction Systems Specialists, LLC, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       $ 2,632 2,632              
Investment, Identifier [Axis]: Heavy Construction Systems Specialists, LLC, Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       7,295 [3],[5],[17] 7,276 [9],[10],[25]              
Cost       7,194 [3],[5],[17] 7,244 [9],[10],[25]              
Investment, Identifier [Axis]: Heavy Construction Systems Specialists, LLC, Technology, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       0 [3],[5],[17],[23] (33) [9],[10],[25]              
Cost       (34) [3],[5],[17],[23] (43) [9],[10],[25]              
Investment, Identifier [Axis]: Heilbron (f/k/a Sucsez (Bolt Bidco B.V.)), Insurance, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       3,155 [3],[4],[5],[32] 3,148 [9],[10],[15],[20]              
Cost       3,676 [3],[4],[5],[32] 3,676 [9],[10],[15],[20]              
Investment, Identifier [Axis]: HemaSource, Inc, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,421 0              
Investment, Identifier [Axis]: HemaSource, Inc., Healthcare., Common Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [5],[16]       101                
Cost [5],[16]       101                
Investment, Identifier [Axis]: HemaSource, Inc., Healthcare., First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5]       7,101                
Cost [2],[3],[5]       7,093                
Investment, Identifier [Axis]: HemaSource, Inc., Healthcare., Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5],[23]       342                
Cost [2],[3],[5],[23]       341                
Investment, Identifier [Axis]: Holland Acquisition Corp., Energy: Oil & Gas, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [6],[7],[9],[10],[26]         0              
Cost [6],[7],[9],[10],[26]         0              
Investment, Identifier [Axis]: Home Care Assistance, LLC, Healthcare & Pharmaceuticals, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       3,428 [2],[3],[5] 3,621 [9],[10],[28]              
Cost       3,707 [2],[3],[5] 3,736 [9],[10],[28]              
Investment, Identifier [Axis]: HomeX Services Group LLC, Home Construction, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[5],[17],[23]       1,274                
Cost [3],[5],[17],[23]       1,275                
Investment, Identifier [Axis]: HomeX Services Group LLC, Home Construction, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[5],[17],[23]       (7)                
Cost [3],[5],[17],[23]       (7)                
Investment, Identifier [Axis]: HomeX Services Group, LLC, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       845 0              
Investment, Identifier [Axis]: HomeX Services Group, LLC, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       338 0              
Investment, Identifier [Axis]: Honour Lane Logistics Holdings Limited, Transportation Services, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       6,160 [3],[4],[5],[17] 7,814 [9],[10],[15],[24]              
Cost       6,513 [3],[4],[5],[17] 7,781 [9],[10],[15],[24]              
Investment, Identifier [Axis]: Hygie 31 Holding, Pharma-ceuticals, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,739 [3],[4],[5],[32] 1,665 [9],[10],[15],[20]              
Cost       1,504 [3],[4],[5],[32] 1,498 [9],[10],[15],[20]              
Investment, Identifier [Axis]: Hylan Datacom & Electrical LLC, Common Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,013 [12] 4,496 [12] 0            
Investment, Identifier [Axis]: Hylan Datacom & Electrical LLC, Construction & Building, Common Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,013 [5],[16] 4,496 [10],[11]              
Cost       5,219 [5],[16] 5,219 [10],[11]              
Investment, Identifier [Axis]: Hylan Datacom & Electrical LLC, Construction & Building, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       3,917 [2],[3],[5] 3,917 [9],[10],[14]              
Cost       3,746 [2],[3],[5] 3,670 [9],[10],[14]              
Investment, Identifier [Axis]: Hylan Datacom & Electrical LLC, Construction & Building, Second Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [12]       4,519 [2],[3],[5] 4,098 [9],[10],[14]              
Cost       4,519 [2],[3],[5] 4,098 [9],[10],[14]              
Investment, Identifier [Axis]: Hylan Datacom & Electrical LLC, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       3,917 [12] 3,917 [12] 0            
Investment, Identifier [Axis]: Hylan Datacom & Electrical LLC, Second Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value         4,098 0            
Investment, Identifier [Axis]: IM Analytics Holding, LLC (d/b/a NVT), Electronic Instruments & Components, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[25]         3,247              
Cost [9],[10],[25]         3,388              
Investment, Identifier [Axis]: IM Analytics Holding, LLC (d/b/a NVT), Electronic Instruments & Components, Warrants                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [10],[11]         0              
Cost [10],[11]         0              
Investment, Identifier [Axis]: IM Square, Banking, Finance, Insurance & Real Estate, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,713 [3],[4],[5],[19] 2,583 [9],[10],[15],[20]              
Cost       2,947 [3],[4],[5],[19] 2,938 [9],[10],[15],[20]              
Investment, Identifier [Axis]: INOS 19-090 GmbH, Acquisition Facility                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,872 2,380              
Investment, Identifier [Axis]: INOS 19-090 GmbH, Aerospace & Defense, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       5,711 [3],[4],[5],[19],[23] 4,892 [9],[10],[15],[20]              
Cost       6,128 [3],[4],[5],[19],[23] 5,515 [9],[10],[15],[20]              
Investment, Identifier [Axis]: ISTO Technologies II, LLC, Healthcare First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5]       6,616                
Cost [2],[3],[5]       6,621                
Investment, Identifier [Axis]: ISTO Technologies II, LLC, Healthcare, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5],[23]       (18)                
Cost [2],[3],[5],[23]       (17)                
Investment, Identifier [Axis]: ISTO Technologies II, LLC, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       714 0              
Investment, Identifier [Axis]: ITI Intermodal, Inc., Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 103              
Investment, Identifier [Axis]: ITI Intermodal, Inc., Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,157 118              
Investment, Identifier [Axis]: ITI Intermodal, Inc., Transportation Services, Common Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       715 [5],[16] 127 [10],[11]              
Cost       750 [5],[16] 144 [10],[11]              
Investment, Identifier [Axis]: ITI Intermodal, Inc., Transportation Services, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       12,757 [2],[3],[5] 703 [9],[10],[25]              
Cost       12,683 [2],[3],[5] 700 [9],[10],[25]              
Investment, Identifier [Axis]: ITI Intermodal, Inc., Transportation Services, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       67 [2],[3],[5],[23] 5 [9],[10],[25]              
Cost       70 [2],[3],[5],[23] 4 [9],[10],[25]              
Investment, Identifier [Axis]: Infoniqa Holdings GmbH, Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,879 [3],[4],[5] 2,729 [9],[10],[15],[27]              
Cost       2,912 [3],[4],[5] 2,902 [9],[10],[15],[27]              
Investment, Identifier [Axis]: Innovad Group II BV, Beverage, Food & Tobacco, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[15],[27]         5,495              
Cost [9],[10],[15],[27]         6,791              
Investment, Identifier [Axis]: Innovad Group II BV, Beverage, Food & Tobacco, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[4],[5],[23],[32]       6,203                
Cost [3],[4],[5],[23],[32]       6,835                
Investment, Identifier [Axis]: Innovad Group II BV, Beverage, Food & Tobacco, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[4],[5],[52]       1,035                
Cost [3],[4],[5],[52]       1,019                
Investment, Identifier [Axis]: Innovad Group II BV, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       266 1,261              
Investment, Identifier [Axis]: Innovative XCessories & Services, LLC, Automotive, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,469 [3],[13],[18] 2,277 [6],[9],[26]              
Cost       2,839 [3],[13],[18] 2,854 [6],[9],[26]              
Investment, Identifier [Axis]: Interstellar Group B.V., Delayed Draw Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       620 1,310              
Investment, Identifier [Axis]: Interstellar Group B.V., Delayed Draw Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       57 55              
Investment, Identifier [Axis]: Interstellar Group B.V., Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,676 [3],[4],[5],[19],[23] 1,239 [9],[10],[15],[20]              
Cost       1,587 [3],[4],[5],[19],[23] 1,191 [9],[10],[15],[20]              
Investment, Identifier [Axis]: InvoCare Limited, Consumer Cyclical Services, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[4],[5],[23],[49]       2,051                
Cost [3],[4],[5],[23],[49]       1,973                
Investment, Identifier [Axis]: InvoCare Limited, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       387 0              
Investment, Identifier [Axis]: Iqor US Inc., Services: Business, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,622 [3],[17],[18] 2,658 [6],[9],[25]              
Cost       2,683 [3],[17],[18] 2,711 [6],[9],[25]              
Investment, Identifier [Axis]: Isagenix International, LLC, Wholesale, Common Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [5],[16]       0                
Cost [5],[16]       0                
Investment, Identifier [Axis]: Isagenix International, LLC, Wholesale, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       718 [2],[3],[18] 553 [6],[7],[8],[9],[10]              
Cost       542 [2],[3],[18] 1,160 [6],[7],[8],[9],[10]              
Investment, Identifier [Axis]: Isolstar Holding NV (IPCOM), Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       656 744              
Investment, Identifier [Axis]: Isolstar Holding NV (IPCOM), Trading Companies & Distributors, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       4,778 [3],[4],[5],[19],[23] 4,436 [9],[10],[15],[33]              
Cost       4,173 [3],[4],[5],[19],[23] 4,044 [9],[10],[15],[33]              
Investment, Identifier [Axis]: Ivanti Software, Inc., High Tech Industries, Second Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       4,800 [2],[3],[18] 3,383 [8],[9]              
Cost       5,989 [2],[3],[18] 5,989 [8],[9]              
Investment, Identifier [Axis]: JF Acquisition, LLC, Automotive, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       3,598 [2],[3],[5] 3,575 [9],[10],[25]              
Cost       3,730 [2],[3],[5] 3,747 [9],[10],[25]              
Investment, Identifier [Axis]: JSC Tekers Holdings, Common Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value         0 0            
Investment, Identifier [Axis]: JSC Tekers Holdings, Common Stock, Controlled Investment                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value         0 0            
Investment, Identifier [Axis]: JSC Tekers Holdings, Preferred Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value         0 6,197            
Investment, Identifier [Axis]: JSC Tekers Holdings, Preferred Stock, Controlled Investment                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value         0 0            
Investment, Identifier [Axis]: Jade Bidco Limited (Jane's), Aerospace & Defense, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,176 [3],[4],[5],[32] 4,009 [9],[10],[15],[27]              
Cost       1,151 [3],[4],[5],[32] 4,082 [9],[10],[15],[27]              
Investment, Identifier [Axis]: Jade Bidco Limited (Jane's), Aerospace & Defense, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       6,648 [3],[4],[5],[13] 6,592 [9],[10],[15],[24]              
Cost       6,598 [3],[4],[5],[13] 6,576 [9],[10],[15],[24]              
Investment, Identifier [Axis]: Jaguar Merger Sub Inc., Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 422              
Investment, Identifier [Axis]: Jaguar Merger Sub Inc., Other Financial, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[14]         7,617              
Cost [9],[10],[14]         7,571              
Investment, Identifier [Axis]: Jaguar Merger Sub Inc., Other Financial, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[14]         (2)              
Cost [9],[10],[14]         (4)              
Investment, Identifier [Axis]: Jaguar Merger Sub Inc., Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 490              
Investment, Identifier [Axis]: Jedson Engineering, Inc., Engineering & Construction Management, First Lien Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [10],[46]         2,650              
Cost [10],[46]         2,650              
Investment, Identifier [Axis]: JetBlue 2019-1 Class B Pass Through Trust, Airlines, Structured Secured Note - Class B                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value         3,511              
Cost         3,609              
Investment, Identifier [Axis]: JetBlue 2019-1 Class B Pass Through Trust, Structured Products, Structured Secured Note - Class B                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       3,026                
Cost       3,052                
Investment, Identifier [Axis]: Jocassee Partners LLC                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       65 65,000              
Total contributed capital       35 35,000              
Investment, Identifier [Axis]: Jocassee Partners LLC, Investment Funds & Vehicles, 9.1% Member Interest                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [15]         40,088              
Cost [15]         35,158              
Investment, Identifier [Axis]: Jocassee Partners LLC, Investment Funds & Vehicles, Member Interest                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [4],[23]       41,053                
Cost [4],[23]       35,158                
Investment, Identifier [Axis]: Jocassee Partners LLC, Joint Venture                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       65,000 65,000              
Investment, Identifier [Axis]: Jocassee Partners LLC, Member Interest                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       41,053 40,088 37,601            
Investment, Identifier [Axis]: Jon Bidco Limited, Capex & Acquisition Facility                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,125 1,441              
Investment, Identifier [Axis]: Jon Bidco Limited, Healthcare, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       3,844 [3],[4],[5],[23],[50] 3,477 [9],[10],[15],[51]              
Cost       4,133 [3],[4],[5],[23],[50] 3,813 [9],[10],[15],[51]              
Investment, Identifier [Axis]: Jones Fish Hatcheries & Distributors LLC, Consumer Products, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       3,414 [2],[3],[5] 2,745 [8],[9],[10]              
Cost       3,421 [2],[3],[5] 2,736 [8],[9],[10]              
Investment, Identifier [Axis]: Jones Fish Hatcheries & Distributors LLC, Consumer Products, LLC Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       228 [5] 115 [10],[11]              
Cost       107 [5] 97 [10],[11]              
Investment, Identifier [Axis]: Jones Fish Hatcheries & Distributors LLC, Consumer Products, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       (8) [2],[3],[5],[23] (6) [8],[9],[10]              
Cost       (6) [2],[3],[5],[23] (7) [8],[9],[10]              
Investment, Identifier [Axis]: Jones Fish Hatcheries & Distributors LLC, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       418 418              
Investment, Identifier [Axis]: Kano Laboratories LLC, Chemicals, Plastics & Rubber, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       5,545 [2],[3],[5],[23] 5,545 [9],[10],[26]              
Cost       5,506 [2],[3],[5],[23] 5,535 [9],[10],[26]              
Investment, Identifier [Axis]: Kano Laboratories LLC, Chemicals, Plastics & Rubber, Partnership Equity                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       224 [5],[16] 191 [10],[11]              
Cost       203 [5],[16] 203 [10],[11]              
Investment, Identifier [Axis]: Kano Laboratories LLC, Delayed Draw Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       153 153              
Investment, Identifier [Axis]: Kano Laboratories LLC, Delayed Draw Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       2,830 2,830              
Investment, Identifier [Axis]: Kemmerer Operations, LLC, Common Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       0 [12] 1,181 [12] 0            
Investment, Identifier [Axis]: Kemmerer Operations, LLC, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 908              
Investment, Identifier [Axis]: Kemmerer Operations, LLC, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       $ 0 [12] $ 1,565 [12] 0            
Investment, interest rate, paid in kind       15.00% 15.00%              
Investment, Identifier [Axis]: Kemmerer Operations, LLC, Metals & Mining, Common Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [6],[10],[11]         $ 1,181              
Cost [6],[10],[11]         1,589              
Investment, Identifier [Axis]: Kemmerer Operations, LLC, Metals & Mining, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [6],[10]         1,565              
Cost [6],[10]         $ 1,565              
Investment, interest rate, paid in kind [6],[10]         15.00%              
Investment, Identifier [Axis]: Kene Acquisition, Inc. (En Engineering), Oil & Gas Equipment & Services, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       $ 7,031 [2],[3],[5] $ 7,027 [8],[9],[10]              
Cost       7,037 [2],[3],[5] 7,071 [8],[9],[10]              
Investment, Identifier [Axis]: Kid Distro Holdings, LLC, Media & Entertainment, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       9,116 [2],[3],[5] 9,125 [8],[9],[10]              
Cost       9,039 [2],[3],[5] 9,080 [8],[9],[10]              
Investment, Identifier [Axis]: Kid Distro Holdings, LLC, Media & Entertainment, LLC Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       599 [5],[16] 577 [10],[11]              
Cost       638 [5],[16] 638 [10],[11]              
Investment, Identifier [Axis]: Kona Buyer, LLC, High Tech Industries, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       8,413 [2],[3],[5] 8,623 [9],[10],[14]              
Cost       8,302 [2],[3],[5] 8,615 [9],[10],[14]              
Investment, Identifier [Axis]: Lambir Bidco Limited, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       626 1,766              
Investment, Identifier [Axis]: Lambir Bidco Limited, Healthcare, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,854 [3],[5],[19],[23] 4,397 [9],[10],[15],[20]              
Cost       1,961 [3],[5],[19],[23] 4,794 [9],[10],[15],[20]              
Investment, Identifier [Axis]: Lambir Bidco Limited, Healthcare, Second Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,587 [4],[5] 1,409 [10],[15]              
Cost       $ 1,730 [4],[5] $ 1,533 [10],[15]              
Investment, interest rate, paid in kind       12.00% [4],[5] 12.00% [10],[15]              
Investment, Identifier [Axis]: Lattice Group Holdings Bidco Limited, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       $ 255 $ 298              
Investment, Identifier [Axis]: Lattice Group Holdings Bidco Limited, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       18 0              
Investment, Identifier [Axis]: Lattice Group Holdings Bidco Limited, Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       659 [3],[4],[5],[13],[23] 633 [9],[10],[15],[24]              
Cost       690 [3],[4],[5],[13],[23] 645 [9],[10],[15],[24]              
Investment, Identifier [Axis]: Lattice Group Holdings Bidco Limited, Technology, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       16 [3],[4],[5],[13],[23] 34 [9],[10],[14],[15]              
Cost       17 [3],[4],[5],[13],[23] 35 [9],[10],[14],[15]              
Investment, Identifier [Axis]: LeadsOnline, LLC, Business Equipment & Services, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       10,096 [2],[3],[5] 10,150 [8],[9],[10]              
Cost       10,069 [2],[3],[5] 10,119 [8],[9],[10]              
Investment, Identifier [Axis]: LeadsOnline, LLC, Business Equipment & Services, LLC Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       239 [5] 65 [10],[11]              
Cost       85 [5] 52 [10],[11]              
Investment, Identifier [Axis]: LeadsOnline, LLC, Business Equipment & Services, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       400 [2],[3],[5],[23] (32) [8],[9],[10]              
Cost       385 [2],[3],[5],[23] (39) [8],[9],[10]              
Investment, Identifier [Axis]: LeadsOnline, LLC, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       2,187 2,603              
Investment, Identifier [Axis]: Learfield Communications, LLC, Broadcasting, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       5,311 [3],[17] 100 [9],[25]              
Cost       5,517 [3],[17] 94 [9],[25]              
Investment, Identifier [Axis]: Learfield Communications, LLC, Broadcasting, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       4,037 [5],[16] 8,455 [8]              
Cost       3,105 [5],[16] 8,784 [8]              
Investment, Identifier [Axis]: Legal Solutions Holdings, Business Services, Senior Subordinated Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       0 [5],[29],[53] 0 [7],[10],[46]              
Cost       $ 10,129 [5],[29],[53] $ 10,129 [7],[10],[46]              
Investment, interest rate, paid in kind       16.00% [5],[29],[53] 16.00% [7],[10],[46]              
Investment, Identifier [Axis]: Liberty Steel Holdings USA Inc., Industrial Other, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[28]         $ 19,846              
Cost [9],[10],[28]         19,847              
Investment, Identifier [Axis]: Lifestyle Intermediate II, LLC, Consumer Goods: Durable, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       $ 2,675 [2],[3],[5],[18] 2,980 [6],[8],[9],[10]              
Cost       3,006 [2],[3],[5],[18] 3,194 [6],[8],[9],[10]              
Investment, Identifier [Axis]: Lifestyle Intermediate II, LLC, Consumer Goods: Durable, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       (275) [2],[3],[5],[18],[23] (168) [6],[8],[9],[10]              
Cost       0 [2],[3],[5],[18],[23] 0 [6],[8],[9],[10]              
Investment, Identifier [Axis]: Lifestyle Intermediate II, LLC, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       2,500 2,500              
Investment, Identifier [Axis]: LivTech Purchaser, Inc., Business Services, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       860 [2],[3],[5] 837 [8],[9],[10]              
Cost       858 [2],[3],[5] 855 [8],[9],[10]              
Investment, Identifier [Axis]: LivTech Purchaser, Inc., Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 138              
Investment, Identifier [Axis]: LogMeIn, Inc., High Tech Industries, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,274 [3],[17],[18] 1,253 [6],[9],[25]              
Cost       1,922 [3],[17],[18] 1,942 [6],[9],[25]              
Investment, Identifier [Axis]: Long Term Care Group, Inc., Healthcare, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       6,308 [3],[5],[17] 7,816 [9],[10],[25]              
Cost       $ 8,149 [3],[5],[17] 7,897 [9],[10],[25]              
Investment, interest rate, paid in kind [3],[5],[17]       6.00%                
Investment, Identifier [Axis]: MC Group Ventures Corporation, Business Services, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       $ 4,133 [3],[5],[23] 4,123 [9],[10],[25]              
Cost       4,088 [3],[5],[23] 4,096 [9],[10],[25]              
Investment, Identifier [Axis]: MC Group Ventures Corporation, Business Services, Partnership Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       778 [5],[16] 781 [10],[11]              
Cost       747 [5],[16] 747 [10],[11]              
Investment, Identifier [Axis]: MC Group Ventures Corporation, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       276 296              
Investment, Identifier [Axis]: MNS Buyer, Inc., Construction and Building, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       901 [3],[5],[17] 835 [9],[10],[25]              
Cost       893 [3],[5],[17] 897 [9],[10],[25]              
Investment, Identifier [Axis]: MNS Buyer, Inc., Construction and Building, Partnership Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       82 [5],[16] 54 [10],[11]              
Cost       77 [5],[16] 77 [10],[11]              
Investment, Identifier [Axis]: MVC Automotive Group GmbH, Bridge Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       $ 9,762 [40] $ 7,149 [40] 7,149            
Investment, interest rate, paid in kind       1.50% 6.00%              
Investment, Identifier [Axis]: MVC Automotive Group GmbH, Common Equity Interest                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       $ 15,430 [40] $ 9,675 [40] 7,699            
Investment, Identifier [Axis]: MVC Automotive Group Gmbh, Automotive, Bridge Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       9,762 [4],[5],[41],[53] 7,149 [10],[15],[46]              
Cost       $ 9,762 [4],[5],[41],[53] 7,149 [10],[15],[46]              
Investment, interest rate, paid in kind [4],[5],[41],[53]       1.50%                
Investment, Identifier [Axis]: MVC Automotive Group Gmbh, Automotive, Common Equity interest                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       $ 15,430 [4],[5],[16],[41],[53] 9,675 [10],[11],[15],[46]              
Cost       9,553 [4],[5],[16],[41],[53] 9,553 [10],[11],[15],[46]              
Investment, Identifier [Axis]: MVC Private Equity Fund LP, General Partnership Interest                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       24 45              
Investment, Identifier [Axis]: MVC Private Equity Fund LP, General Partnership Interest, Netting                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value         45 188            
Investment, Identifier [Axis]: MVC Private Equity Fund LP, Investment Funds & Vehicles, General Partnership Interest                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       24 [4],[16],[41],[53] 45 [15],[46]              
Cost       201 [4],[16],[41],[53] 225 [15],[46]              
Investment, Identifier [Axis]: MVC Private Equity Fund LP, Investment Funds & Vehicles, Limited Partnership Interest                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       981 [4],[16],[41],[53] 1,793 [15],[46]              
Cost       7,959 [4],[16],[41],[53] 8,899 [15],[46]              
Investment, Identifier [Axis]: MVC Private Equity Fund LP, Limited Partnership Interest                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       981 1,793 7,376            
Investment, Identifier [Axis]: Magnetite XIX, Limited, Multi-Sector Holdings, Subordinated Notes                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       5,067 [2],[4],[18] 4,450 [6],[8],[15]              
Cost       5,107 [2],[4],[18] 5,107 [6],[8],[15]              
Investment, Identifier [Axis]: Magnetite XIX, Limited, Multi-Sector Holdings, Subordinated Structured Notes                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       8,181 [4],[18] 7,992 [6],[15]              
Cost       9,014 [4],[18] 9,377 [6],[15]              
Investment, Identifier [Axis]: Marmoutier Holding B.V., Consumer Products, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,777 [3],[4],[5],[19],[23] 2,093 [9],[10],[15],[27]              
Cost       $ 2,415 [3],[4],[5],[19],[23] 2,219 [9],[10],[15],[27]              
Investment, interest rate, paid in kind [3],[4],[5],[19],[23]       6.80%                
Investment, Identifier [Axis]: Marmoutier Holding B.V., Consumer Products, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       $ 6 [3],[4],[5],[19],[23] 40 [9],[10],[15],[20]              
Cost       $ 44 [3],[4],[5],[19],[23] 42 [9],[10],[15],[20]              
Investment, interest rate, paid in kind [3],[4],[5],[19],[23]       5.80%                
Investment, Identifier [Axis]: Marmoutier Holding B.V., Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       $ 18 24              
Investment, Identifier [Axis]: Marmoutier Holding B.V., Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       109 106              
Investment, Identifier [Axis]: Marshall Excelsior Co., Capital Goods, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       10,462 [2],[3],[5] 10,794 [9],[10],[14]              
Cost       10,678 [2],[3],[5] 10,786 [9],[10],[14]              
Investment, Identifier [Axis]: Marshall Excelsior Co., Capital Goods, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,914 [2],[3],[5],[23] 1,217 [9],[10],[54]              
Cost       1,952 [2],[3],[5],[23] 1,215 [9],[10],[54]              
Investment, Identifier [Axis]: Marshall Excelsior Co., Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       221 413              
Investment, Identifier [Axis]: Media Recovery, Inc. (SpotSee), Containers, Packaging & Glass, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,764 [2],[3],[5] 2,903 [9],[10],[14]              
Cost       2,853 [2],[3],[5] 2,872 [9],[10],[14]              
Investment, Identifier [Axis]: Media Recovery, Inc. (SpotSee), Containers, Packaging & Glass, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       3,946 [3],[5],[30] 3,894 [9],[10],[43]              
Cost       4,243 [3],[5],[30] 4,257 [9],[10],[43]              
Investment, Identifier [Axis]: Median B.V., Healthcare, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       8,595 [3],[4],[35] 7,449 [9],[15],[31]              
Cost       9,849 [3],[4],[35] 9,797 [9],[15],[31]              
Investment, Identifier [Axis]: Medical Solutions Parent Holdings, Inc., Healthcare, Second Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       3,708 [2],[3] 4,067 [9],[25]              
Cost       4,386 [2],[3] 4,382 [9],[25]              
Investment, Identifier [Axis]: Mercell Holding AS, Capex Acquisition Facility                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       773 797              
Investment, Identifier [Axis]: Mercell Holding AS, Technology, Class A Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       128 [4],[5],[16] 116 [10],[11],[15]              
Cost       $ 111 [4],[5],[16] 111 [10],[11],[15]              
Investment, interest rate, paid in kind [4],[5],[16]       9.00%                
Investment, Identifier [Axis]: Mercell Holding AS, Technology, Class B Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       $ 51 [4],[5],[16] 0 [10],[11],[15]              
Cost       0 [4],[5],[16] 0 [10],[11],[15]              
Investment, Identifier [Axis]: Mercell Holding AS, Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       3,041 [3],[4],[23],[55] 3,102 [9],[10],[15],[56]              
Cost       3,138 [3],[4],[23],[55] 3,124 [9],[10],[15],[56]              
Investment, Identifier [Axis]: Modern Star Holdings Bidco Pty Limited, Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       974 968              
Investment, Identifier [Axis]: Modern Star Holdings Bidco Pty Limited., Non-durable Consumer Goods, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       7,784 [3],[4],[5],[23],[36] 7,634 [9],[10],[15],[22]              
Cost       8,367 [3],[4],[5],[23],[36] 8,324 [9],[10],[15],[22]              
Investment, Identifier [Axis]: Moonlight Bidco Limited, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       562 0              
Investment, Identifier [Axis]: Moonlight Bidco Limited, Healthcare, Common Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [4],[5],[16]       1,380                
Cost [4],[5],[16]       138                
Investment, Identifier [Axis]: Moonlight Bidco Limited, Healthcare, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[4],[5],[23],[30]       1,832                
Cost [3],[4],[5],[23],[30]       1,875                
Investment, Identifier [Axis]: Murphy Midco Limited, Delayed Draw Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 407              
Investment, Identifier [Axis]: Murphy Midco Limited, Media, Diversified & Production, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,670 [3],[4],[5],[35] 1,150 [9],[10],[15],[34]              
Cost       1,709 [3],[4],[5],[35] 1,258 [9],[10],[15],[34]              
Investment, Identifier [Axis]: Music Reports, Inc., Media & Entertainment, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       6,884 [2],[3],[5] 6,816 [9],[10],[25]              
Cost       6,838 [2],[3],[5] 6,810 [9],[10],[25]              
Investment, Identifier [Axis]: NAW Buyer LLC, Technology, Equity Co Invest                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [5],[16]       473                
Cost [5],[16]       473                
Investment, Identifier [Axis]: NAW Buyer LLC, Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5],[23]       11,446                
Cost [2],[3],[5],[23]       11,426                
Investment, Identifier [Axis]: NAW Buyer LLC, Technology, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5],[23]       335                
Cost [2],[3],[5],[23]       334                
Investment, Identifier [Axis]: NAW Buyer, LLC, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       5,876 0              
Investment, Identifier [Axis]: NAW Buyer, LLC, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,515 0              
Investment, Identifier [Axis]: NF Holdco, LLC, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       663 0              
Investment, Identifier [Axis]: NF Holdco, LLC, Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5]       6,204                
Cost [2],[3],[5]       6,174                
Investment, Identifier [Axis]: NF Holdco, LLC, Technology, LP Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [5],[16]       633                
Cost [5],[16]       659                
Investment, Identifier [Axis]: NF Holdco, LLC, Technology, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5],[23]       417                
Cost [2],[3],[5],[23]       413                
Investment, Identifier [Axis]: NGS US Finco, LLC (f/k/a Dresser Natural Gas Solutions), Energy Equipment & Services, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       4,655 [3],[5],[17] 4,697 [9],[10],[25]              
Cost       4,648 [3],[5],[17] 4,693 [9],[10],[25]              
Investment, Identifier [Axis]: NPM Investments 28 B.V., Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       479 463              
Investment, Identifier [Axis]: NPM Investments 28 B.V., Healthcare, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,175 [3],[4],[5],[19],[23] 2,084 [9],[10],[15],[20]              
Cost       1,912 [3],[4],[5],[19],[23] 1,904 [9],[10],[15],[20]              
Investment, Identifier [Axis]: Napa Bidco Pty Ltd, Healthcare, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       18,321 [3],[4],[5],[49] 16,963 [9],[10],[15],[37]              
Cost       19,616 [3],[4],[5],[49] 19,527 [9],[10],[15],[37]              
Investment, Identifier [Axis]: Narda Acquisitionco., Inc., Aerospace & Defense, Class A Preferred Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       535 [5],[16] 300 [10],[11]              
Cost       459 [5],[16] 459 [10],[11]              
Investment, Identifier [Axis]: Narda Acquisitionco., Inc., Aerospace & Defense, Class B Common Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       229 [5],[16] 0 [10],[11]              
Cost       51 [5],[16] 51 [10],[11]              
Investment, Identifier [Axis]: Narda Acquisitionco., Inc., Aerospace & Defense, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       5,562 [2],[3],[5] 5,096 [8],[9],[10]              
Cost       5,526 [2],[3],[5] 5,553 [8],[9],[10]              
Investment, Identifier [Axis]: Narda Acquisitionco., Inc., Aerospace & Defense, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       (8) [3],[5],[23] 5 [8],[9],[10]              
Cost       (15) [3],[5],[23] 112 [8],[9],[10]              
Investment, Identifier [Axis]: Narda Acquisitionco., Inc., Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,311 1,180              
Investment, Identifier [Axis]: Navia Benefit Solutions, Inc., Healthcare & Pharmaceuticals, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,918 [3],[5],[17] 2,649 [9],[10],[25]              
Cost       $ 2,913 [3],[5],[17] 2,663 [9],[10],[25]              
Investment, interest rate, paid in kind [3],[5],[17]       3.00%                
Investment, Identifier [Axis]: Navia Benefit Solutions, Inc., Healthcare & Pharmaceuticals, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       $ 2,620 [3],[5],[17] 2,918 [9],[10],[28]              
Cost       2,645 [3],[5],[17] 2,920 [9],[10],[28]              
Investment, Identifier [Axis]: NeoxCo, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       497 0              
Investment, Identifier [Axis]: NeoxCo, Internet Software & Services, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[4],[5],[23],[32]       2,090                
Cost [3],[4],[5],[23],[32]       2,041                
Investment, Identifier [Axis]: Next Holdco, LLC, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,891 0              
Investment, Identifier [Axis]: Next Holdco, LLC,Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       733 0              
Investment, Identifier [Axis]: Next Holdco, LLC,Technology,First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[5],[17],[23]       7,236                
Cost [3],[5],[17],[23]       7,239                
Investment, Identifier [Axis]: Next Holdco, LLC,Technology,Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[5],[17],[23]       (11)                
Cost [3],[5],[17],[23]       (11)                
Investment, Identifier [Axis]: Nexus Underwriting Management Limited, Acquisition Facility                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 443              
Investment, Identifier [Axis]: Nexus Underwriting Management Limited, Other Financial, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[15],[34]         1,508              
Cost [9],[10],[15],[34]         1,684              
Investment, Identifier [Axis]: Nexus Underwriting Management Limited, Other Financial, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[15],[34]         184              
Cost [9],[10],[15],[34]         202              
Investment, Identifier [Axis]: Northstar Recycling, LLC, Environmental Industries, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,434 [2],[3],[5] 2,446 [8],[9],[10]              
Cost       2,417 [2],[3],[5] 2,434 [8],[9],[10]              
Investment, Identifier [Axis]: Novotech Aus Bidco Pty Ltd, Capex & Acquisition Facility                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       809 809              
Investment, Identifier [Axis]: Novotech Aus Bidco Pty Ltd, Healthcare, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       3,984 [3],[4],[5],[13],[23] 3,406 [9],[10],[15],[37]              
Cost       3,944 [3],[4],[5],[13],[23] 3,667 [9],[10],[15],[37]              
Investment, Identifier [Axis]: Novotech Aus Bidco Pty Ltd, Healthcare, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[15],[24]         443              
Cost [9],[10],[15],[24]         449              
Investment, Identifier [Axis]: OA Buyer, Inc., Healthcare, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       5,485 [3],[5],[17] 5,501 [9],[10],[25]              
Cost       5,450 [3],[5],[17] 5,488 [9],[10],[25]              
Investment, Identifier [Axis]: OA Buyer, Inc., Healthcare, Partnership Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       276 [5],[16] 226 [10],[11]              
Cost       211 [5],[16] 211 [10],[11]              
Investment, Identifier [Axis]: OA Buyer, Inc., Healthcare, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       (12) [3],[5],[17],[23] (21) [9],[10],[25]              
Cost       (19) [3],[5],[17],[23] (23) [9],[10],[25]              
Investment, Identifier [Axis]: OA Buyer, Inc., Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,331 1,331              
Investment, Identifier [Axis]: OAC Holdings I Corp, Automotive, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       3,454 [2],[3],[5] 3,567 [9],[10],[24]              
Cost       3,522 [2],[3],[5] 3,556 [9],[10],[24]              
Investment, Identifier [Axis]: OAC Holdings I Corp, Automotive, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       (47) [2],[3],[5],[23] 743 [9],[10],[24]              
Cost       (20) [2],[3],[5],[23] 739 [9],[10],[24]              
Investment, Identifier [Axis]: OAC Holdings I Corp., Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,370 607              
Investment, Identifier [Axis]: OG III B.V., Containers & Glass Products, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       3,390 [3],[4],[5],[19] 3,310 [9],[10],[15],[20]              
Cost       3,684 [3],[4],[5],[19] 3,674 [9],[10],[15],[20]              
Investment, Identifier [Axis]: ORTEC INTERNATIONAL NEWCO B.V. Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[4],[5],[19]       985                
Cost [3],[4],[5],[19]       973                
Investment, Identifier [Axis]: OSP Hamilton Purchaser, LLC, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       5,345 0              
Investment, Identifier [Axis]: OSP Hamilton Purchaser, LLC, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,109 187              
Investment, Identifier [Axis]: OSP Hamilton Purchaser, LLC, Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [8],[9],[10]         2,190              
Cost [8],[9],[10]         2,219              
Investment, Identifier [Axis]: OSP Hamilton Purchaser, LLC, Technology, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5]       12,934                
Cost [2],[3],[5]       12,976                
Investment, Identifier [Axis]: OSP Hamilton Purchaser, LLC, Technology, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5],[23]       (107)                
Cost [2],[3],[5],[23]       (105)                
Investment, Identifier [Axis]: OSP Hamilton Purchaser, LLC, Technology, First Lien Senior Secured Term Loan 3                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5],[23]       (22)                
Cost [2],[3],[5],[23]       (22)                
Investment, Identifier [Axis]: OSP Hamilton Purchaser, LLC, Technology, First Lien Senior Secured Term Loan1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[14]         2,206              
Cost [9],[10],[14]         2,206              
Investment, Identifier [Axis]: OSP Hamilton Purchaser, LLC, Technology, LP Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       174 [5] 221 [10],[11]              
Cost       174 [5] 208 [10],[11]              
Investment, Identifier [Axis]: OSP Hamilton Purchaser, LLC, Technology, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [8],[9],[10]         (6)              
Cost [8],[9],[10]         (3)              
Investment, Identifier [Axis]: Ocelot Holdco LLC, Construction Machinery, Common Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [5],[16]       0                
Cost [5],[16]       0                
Investment, Identifier [Axis]: Ocelot Holdco LLC, Construction Machinery, Preferred Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [5]       2,085                
Cost [5]       $ 1,562                
Investment, interest rate, paid in kind [5]       15.00%                
Investment, Identifier [Axis]: Ocelot Holdco LLC, Construction Machinery, Super Senior Takeback Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [5]       $ 549                
Cost [5]       549                
Investment, Identifier [Axis]: Ocelot Holdco LLC, Construction Machinery, Takeback Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [5]       2,933                
Cost [5]       2,933                
Investment, Identifier [Axis]: Ocular Therapeutix, Inc., Pharma-ceuticals, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[4],[5],[17]       3,812                
Cost [3],[4],[5],[17]       3,817                
Investment, Identifier [Axis]: Offen Inc., Transportation: Cargo, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       3,691 [5],[13],[18] 3,627 [6],[10],[25]              
Cost       3,691 [5],[13],[18] 3,702 [6],[10],[25]              
Investment, Identifier [Axis]: Omni Intermediate Holdings, LLC, Delayed Draw Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 2,289              
Investment, Identifier [Axis]: Omni Intermediate Holdings, LLC, Transportation, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       7,864 [2],[3],[5] 5,995 [9],[10],[14]              
Cost       8,291 [2],[3],[5] 6,098 [9],[10],[14]              
Investment, Identifier [Axis]: Options Technology Ltd., Computer Services, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,249 [3],[4],[5],[13] 2,251 [9],[10],[15],[26]              
Cost       2,251 [3],[4],[5],[13] 2,266 [9],[10],[15],[26]              
Investment, Identifier [Axis]: Oracle Vision Bidco Limited, Healthcare, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,918 [3],[4],[5],[35] 2,753 [9],[10],[15],[34]              
Cost       3,162 [3],[4],[5],[35] 3,151 [9],[10],[15],[34]              
Investment, Identifier [Axis]: Origin Bidco Limited, Technology, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       326 [3],[4],[5],[19] 342 [9],[10],[15],[20]              
Cost       354 [3],[4],[5],[19] 395 [9],[10],[15],[20]              
Investment, Identifier [Axis]: Origin Bidco Limited, Technology, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       531 [2],[3],[4],[5] 577 [8],[9],[10],[15]              
Cost       523 [2],[3],[4],[5] 584 [8],[9],[10],[15]              
Investment, Identifier [Axis]: PDQ.Com Corporation, Business Equipment & Services, Class A-2 Partnership Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       44 [5] 41 [10],[11]              
Cost       29 [5] 29 [10],[11]              
Investment, Identifier [Axis]: PDQ.Com Corporation, Business Equipment & Services, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       10,319 [2],[3],[5],[23] 8,172 [8],[9],[10]              
Cost       10,116 [2],[3],[5],[23] 8,116 [8],[9],[10]              
Investment, Identifier [Axis]: PDQ.Com Corporation, Business Equipment & Services, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5],[23]       2,930                
Cost [2],[3],[5],[23]       2,935                
Investment, Identifier [Axis]: PDQ.Com Corporation, Delayed Draw Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,970 0              
Investment, Identifier [Axis]: PDQ.Com Corporation, Delayed Draw Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       4,807 6,885              
Investment, Identifier [Axis]: PSP Intermediate 4, L.L.C., Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       206 727              
Investment, Identifier [Axis]: PSP Intermediate 4, LLC, Technology, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       820 [3],[4],[5],[23],[48] 829 [9],[10],[15],[20]              
Cost       842 [3],[4],[5],[23],[48] 825 [9],[10],[15],[20]              
Investment, Identifier [Axis]: PSP Intermediate 4, LLC, Technology, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,305 [3],[4],[5],[17] 842 [8],[9],[10],[15]              
Cost       1,391 [3],[4],[5],[17] 844 [8],[9],[10],[15]              
Investment, Identifier [Axis]: Pacific Health Supplies Bidco Pty Limited, CapEx Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       328 0              
Investment, Identifier [Axis]: Panoche Energy Center LLC, Electric, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       4,224 [5] 4,628 [10]              
Cost       3,970 [5] 4,430 [10]              
Investment, Identifier [Axis]: Pare SAS (SAS Maurice MARLE), Health Care Equipment, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,804 [3],[4],[5],[32] 2,638 [9],[10],[15],[27]              
Cost       $ 2,837 [3],[4],[5],[32] $ 2,807 [9],[10],[15],[27]              
Investment, interest rate, paid in kind       0.80% [3],[4],[5],[32] 0.75% [9],[10],[15],[27]              
Investment, Identifier [Axis]: Pare SAS (SAS Maurice MARLE), Health Care Equipment, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       $ 1,482 [2],[3],[4],[5] $ 1,455 [9],[10],[14],[15]              
Cost       1,500 [2],[3],[4],[5] 1,500 [9],[10],[14],[15]              
Investment, Identifier [Axis]: Parkview Dental Holdings LLC, Healthcare, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5],[23]       605                
Cost [2],[3],[5],[23]       606                
Investment, Identifier [Axis]: Parkview Dental Holdings LLC, Healthcare, LLC Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [5],[16]       298                
Cost [5],[16]       298                
Investment, Identifier [Axis]: Patriot New Midco 1 Limited (Forensic Risk Alliance), Diversified Financial Services, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,327 [3],[4],[5],[19] 2,702 [9],[10],[15],[20]              
Cost       2,315 [3],[4],[5],[19] 2,850 [9],[10],[15],[20]              
Investment, Identifier [Axis]: Patriot New Midco 1 Limited (Forensic Risk Alliance), Diversified Financial Services, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,804 [2],[3],[4],[5] 3,159 [8],[9],[10],[15]              
Cost       2,828 [2],[3],[4],[5] 3,264 [8],[9],[10],[15]              
Investment, Identifier [Axis]: Perimeter Master Note Business Trust, Credit Card ABS, Structured Secured Note - Class A                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       172 [4],[5] 165 [10],[15]              
Cost       182 [4],[5] 182 [10],[15]              
Investment, Identifier [Axis]: Perimeter Master Note Business Trust, Credit Card ABS, Structured Secured Note - Class B                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       173 [4],[5] 162 [10],[15]              
Cost       182 [4],[5] 182 [10],[15]              
Investment, Identifier [Axis]: Perimeter Master Note Business Trust, Credit Card ABS, Structured Secured Note - Class C                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       167 [4],[5] 157 [10],[15]              
Cost       182 [4],[5] 182 [10],[15]              
Investment, Identifier [Axis]: Perimeter Master Note Business Trust, Credit Card ABS, Structured Secured Note - Class D                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       166 [4],[5] 158 [10],[15]              
Cost       182 [4],[5] 181 [10],[15]              
Investment, Identifier [Axis]: Perimeter Master Note Business Trust, Credit Card ABS, Structured Secured Note - Class E                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       8,503 [4],[5] 8,154 [10],[15]              
Cost       9,274 [4],[5] 9,273 [10],[15]              
Investment, Identifier [Axis]: Permaconn BidCo Pty Ltd, Tele-communications, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,743 [3],[4],[5],[49] 2,728 [9],[10],[15],[47]              
Cost       2,700 [3],[4],[5],[49] 2,864 [9],[10],[15],[47]              
Investment, Identifier [Axis]: Polara Enterprises, L.L.C., Capital Equipment, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,118 [2],[3],[5] 1,210 [8],[9],[10]              
Cost       1,103 [2],[3],[5] 1,209 [8],[9],[10]              
Investment, Identifier [Axis]: Polara Enterprises, L.L.C., Capital Equipment, Partnership Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,285 [5] 823 [10],[11]              
Cost       741 [5] 741 [10],[11]              
Investment, Identifier [Axis]: Polara Enterprises, L.L.C., Capital Equipment, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       0 [2],[3],[5],[23] (9) [8],[9],[10]              
Cost       (7) [2],[3],[5],[23] (9) [8],[9],[10]              
Investment, Identifier [Axis]: Polara Enterprises, L.L.C., Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       545 545              
Investment, Identifier [Axis]: Policy Services Company, LLC, Property & Casualty Insurance, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       50,498 [2],[3],[5] 48,490 [8],[9],[10]              
Cost       $ 50,494 [2],[3],[5] $ 48,487 [8],[9],[10]              
Investment, interest rate, paid in kind       4.00% [2],[3],[5] 4.00% [8],[9],[10]              
Investment, Identifier [Axis]: Policy Services Company, LLC, Property & Casualty Insurance, Warrants - Class A                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       $ 1,297 [5],[16] $ 438 [10],[11]              
Cost       0 [5],[16] 0 [10],[11]              
Investment, Identifier [Axis]: Policy Services Company, LLC, Property & Casualty Insurance, Warrants - Class B                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       438 [5],[16] 148 [10],[11]              
Cost       0 [5],[16] 0 [10],[11]              
Investment, Identifier [Axis]: Policy Services Company, LLC, Property & Casualty Insurance, Warrants - Class CC                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       0 [5],[16] 0 [10],[11]              
Cost       0 [5],[16] 0 [10],[11]              
Investment, Identifier [Axis]: Policy Services Company, LLC, Property & Casualty Insurance, Warrants - Class D                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       125 [5],[16] 42 [10],[11]              
Cost       0 [5],[16] 0 [10],[11]              
Investment, Identifier [Axis]: Polymer Solutions Group Holdings, LLC, Chemicals, Plastics & Rubber, Common Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [5],[16]       0                
Cost [5],[16]       0                
Investment, Identifier [Axis]: Polymer Solutions Group Holdings, LLC, Chemicals, Plastics & Rubber, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       936 [3],[5],[17],[18] 987 [6],[9],[10],[25]              
Cost       990 [3],[5],[17],[18] 997 [6],[9],[10],[25]              
Investment, Identifier [Axis]: Premium Franchise Brands, LLC, Research & Consulting Services, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       7,511 [2],[3],[5] 12,510 [8],[9],[10]              
Cost       7,476 [2],[3],[5] 12,496 [8],[9],[10]              
Investment, Identifier [Axis]: Premium Invest, Acquisition Facility                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,712 0              
Investment, Identifier [Axis]: Premium Invest, Brokerage, Asset Managers & Exchanges, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       9,031 [3],[4],[5],[23],[32] 5,656 [9],[10],[15],[27]              
Cost       8,787 [3],[4],[5],[23],[32] 5,804 [9],[10],[15],[27]              
Investment, Identifier [Axis]: Premium Invest, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 2,882              
Investment, Identifier [Axis]: Preqin MC Limited, Banking, Finance, Insurance & Real Estate, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,778 [3],[4],[5],[13] 2,719 [9],[10],[15],[26]              
Cost       2,729 [3],[4],[5],[13] 2,719 [9],[10],[15],[26]              
Investment, Identifier [Axis]: Process Equipment, Inc. (ProcessBarron), Industrial Air & Material Handling Equipment, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       5,462 [2],[3],[5] 4,907 [9],[10],[14]              
Cost       5,502 [2],[3],[5] 5,430 [9],[10],[14]              
Investment, Identifier [Axis]: Process Equipment, Inc. (ProcessBarron), Industrial Air & Material Handling Equipment, First Lien Senior Secured Term Loan1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[25]         304              
Cost [9],[10],[25]         337              
Investment, Identifier [Axis]: Process Insights Acquisition, Inc, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       935 0              
Investment, Identifier [Axis]: Process Insights Acquisition, Inc, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,014 0              
Investment, Identifier [Axis]: Process Insights Acquisition, Inc., Electronics, Common Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [5],[16]       340                
Cost [5],[16]       281                
Investment, Identifier [Axis]: Process Insights Acquisition, Inc., Electronics, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5],[23]       5,293                
Cost [2],[3],[5],[23]       5,186                
Investment, Identifier [Axis]: Process Insights Acquisition, Inc., Electronics, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5],[23]       (6)                
Cost [2],[3],[5],[23]       (23)                
Investment, Identifier [Axis]: Professional Datasolutions, Inc. (PDI), Application Software, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,783 [2],[3],[5] 1,751 [8],[9],[10]              
Cost       1,803 [2],[3],[5] 1,821 [8],[9],[10]              
Investment, Identifier [Axis]: Profit Optics, LLC, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       210 484              
Investment, Identifier [Axis]: ProfitOptics, LLC, Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,635 [3],[5],[13] 1,624 [9],[10],[26]              
Cost       1,611 [3],[5],[13] 1,619 [9],[10],[26]              
Investment, Identifier [Axis]: ProfitOptics, LLC, Technology, LLC Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       220 [5],[16] 172 [10],[11]              
Cost       161 [5],[16] 161 [10],[11]              
Investment, Identifier [Axis]: ProfitOptics, LLC, Technology, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       274 [3],[5],[13],[23] (7) [9],[10],[26]              
Cost       267 [3],[5],[13],[23] (8) [9],[10],[26]              
Investment, Identifier [Axis]: ProfitOptics, LLC, Technology, Second Lien Senior Subordinated Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       73 [5] 74 [10]              
Cost       81 [5] 81 [10]              
Investment, Identifier [Axis]: Proppants Holding, LLC, Energy: Oil & Gas, LLC Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       0 [5],[18] 0 [6],[10],[11]              
Cost       0 [5],[18] 0 [6],[10],[11]              
Investment, Identifier [Axis]: Protego Bidco B.V., Aerospace & Defense, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,630 [3],[4],[5],[23],[32] 1,365 [9],[10],[15],[27]              
Cost       1,739 [3],[4],[5],[23],[32] 1,569 [9],[10],[15],[27]              
Investment, Identifier [Axis]: Protego Bidco B.V., Aerospace & Defense, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,110 [3],[4],[5],[32] 2,017 [9],[10],[15],[27]              
Cost       2,283 [3],[4],[5],[32] 2,275 [9],[10],[15],[27]              
Investment, Identifier [Axis]: Protego Bidco B.V., Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       656 792              
Investment, Identifier [Axis]: QPE7 SPV1 BidCo Pty Ltd, Consumer Cyclical, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,852 [3],[4],[5],[21] 1,821 [9],[10],[15],[22]              
Cost       1,970 [3],[4],[5],[21] 1,965 [9],[10],[15],[22]              
Investment, Identifier [Axis]: Qualified Industries, LLC, Consumer Cyclical, Common Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [5],[16]       64                
Cost [5],[16]       3                
Investment, Identifier [Axis]: Qualified Industries, LLC, Consumer Cyclical, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5]       592                
Cost [2],[3],[5]       586                
Investment, Identifier [Axis]: Qualified Industries, LLC, Consumer Cyclical, Preferred Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [5],[16]       159                
Cost [5],[16]       $ 144                
Investment, interest rate, paid in kind       10.00%                
Investment, Identifier [Axis]: Qualified Industries, LLC, Consumer Cyclical, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5],[23]       $ (2)                
Cost [2],[3],[5],[23]       (6)                
Investment, Identifier [Axis]: Qualified Industries, LLC, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       242 0              
Investment, Identifier [Axis]: Questel Unite, Business Services, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       6,732 [2],[3],[4],[5] 6,692 [8],[9],[10],[15]              
Cost       6,912 [2],[3],[4],[5] 6,815 [8],[9],[10],[15]              
Investment, Identifier [Axis]: R1 Holdings, LLC, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,682 2,623              
Investment, Identifier [Axis]: R1 Holdings, LLC, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,947 1,601              
Investment, Identifier [Axis]: R1 Holdings, LLC, Transportation, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       6,001 [3],[5],[13],[23] 9,873 [9],[10],[14]              
Cost       5,949 [3],[5],[13],[23] 9,873 [9],[10],[14]              
Investment, Identifier [Axis]: R1 Holdings, LLC, Transportation, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       80 [3],[5],[13],[23] 403 [9],[10],[14]              
Cost       66 [3],[5],[13],[23] 403 [9],[10],[14]              
Investment, Identifier [Axis]: RA Outdoors, LLC, High Tech Industries, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       12,723 [2],[3],[5],[18] 12,658 [6],[8],[9],[10]              
Cost       12,658 [2],[3],[5],[18] 12,658 [6],[8],[9],[10]              
Investment, Identifier [Axis]: RA Outdoors, LLC, High Tech Industries, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       778 [2],[3],[5],[18],[23] (25) [6],[8],[9],[10]              
Cost       796 [2],[3],[5],[18],[23] 0 [6],[8],[9],[10]              
Investment, Identifier [Axis]: RA Outdoors, LLC, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       438 1,235              
Investment, Identifier [Axis]: REP SEKO MERGER SUB LLC, Air Freight & Logistics, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       9,498 [3],[5],[19] 9,438 [9],[10],[33]              
Cost       9,192 [3],[5],[19] 9,245 [9],[10],[33]              
Investment, Identifier [Axis]: REP SEKO MERGER SUB LLC, Air Freight & Logistics, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,949 [2],[3],[5] 1,274 [8],[9],[10]              
Cost       1,982 [2],[3],[5] 1,264 [8],[9],[10]              
Investment, Identifier [Axis]: RPX Corporation, Research & Consulting Services, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       4,732 [2],[3],[5] 7,144 [8],[9],[10]              
Cost       4,709 [2],[3],[5] 7,174 [8],[9],[10]              
Investment, Identifier [Axis]: RTIC Subsidiary Holdings, LLC, Consumer Goods: Durable, Class A Preferred Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       0 [5],[16],[18] 1 [6],[10]              
Cost       4 [5],[16],[18] 4 [6],[10]              
Investment, Identifier [Axis]: RTIC Subsidiary Holdings, LLC, Consumer Goods: Durable, Class B Preferred Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       0 [5],[16],[18] 0 [6],[10],[11]              
Cost       0 [5],[16],[18] 0 [6],[10],[11]              
Investment, Identifier [Axis]: RTIC Subsidiary Holdings, LLC, Consumer Goods: Durable, Class C Preferred Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       73 [5],[16],[18] 155 [6],[10],[11]              
Cost       450 [5],[16],[18] 450 [6],[10],[11]              
Investment, Identifier [Axis]: RTIC Subsidiary Holdings, LLC, Consumer Goods: Durable, Common Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       0 [5],[16],[18] 0 [6],[10],[11]              
Cost       0 [5],[16],[18] 0 [6],[10],[11]              
Investment, Identifier [Axis]: RTIC Subsidiary Holdings, LLC, Consumer Goods: Durable, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       8,717 [2],[3],[5],[18] 9,761 [6],[9],[10],[28]              
Cost       8,968 [2],[3],[5],[18] 10,032 [6],[9],[10],[28]              
Investment, Identifier [Axis]: RTIC Subsidiary Holdings, LLC, Consumer Goods: Durable, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       524 [2],[3],[5],[18],[23] 1,480 [6],[9],[10],[28]              
Cost       635 [2],[3],[5],[18],[23] 1,587 [6],[9],[10],[28]              
Investment, Identifier [Axis]: RTIC Subsidiary Holdings, LLC, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       3,333 2,381              
Investment, Identifier [Axis]: Randys Holdings, Inc., Automobile Manufacturers. First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       9,890 [2],[3],[5],[23] 12,708 [9],[10],[14]              
Cost       9,835 [2],[3],[5],[23] 12,727 [9],[10],[14]              
Investment, Identifier [Axis]: Randys Holdings, Inc., Automobile Manufacturers. Partnership Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       570 [5],[16] 533 [10],[11]              
Cost       533 [5],[16] 533 [10],[11]              
Investment, Identifier [Axis]: Randys Holdings, Inc., Automobile Manufacturers. Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       505 [2],[3],[5],[23] 238 [9],[10],[14]              
Cost       493 [2],[3],[5],[23] 239 [9],[10],[14]              
Investment, Identifier [Axis]: Randys Holdings, Inc., Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       3,412 4,412              
Investment, Identifier [Axis]: Randys Holdings, Inc., Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,326 1,571              
Investment, Identifier [Axis]: Recovery Point Systems, Inc., Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       11,442 [2],[3],[5] 11,392 [8],[9],[10]              
Cost       11,330 [2],[3],[5] 11,379 [8],[9],[10]              
Investment, Identifier [Axis]: Recovery Point Systems, Inc., Technology, Partnership Equity                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       103 [5],[16] 125 [10],[11]              
Cost       187 [5],[16] 187 [10],[11]              
Investment, Identifier [Axis]: Renovation Parent Holdings, LLC, Home Furnishings, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       4,167 [2],[3],[5] 4,556 [8],[9],[10]              
Cost       4,677 [2],[3],[5] 4,706 [8],[9],[10]              
Investment, Identifier [Axis]: Renovation Parent Holdings, LLC, Home Furnishings, Partnership Equity                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       67 [5],[16] 152 [10],[11]              
Cost       197 [5],[16] 197 [10],[11]              
Investment, Identifier [Axis]: Rep Seko Merger Sub LLC, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 725              
Investment, Identifier [Axis]: Resolute Investment Managers, Inc., Banking, Finance, Insurance & Real Estate, Second Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       762 [2],[3],[5],[18] 4,243 [6],[8],[9],[10]              
Cost       5,107 [2],[3],[5],[18] 5,107 [6],[8],[9],[10]              
Investment, Identifier [Axis]: Resonetics, LLC, Health Care Equipment, Second Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       3,991 [2],[3],[5] 3,926 [8],[9],[10]              
Cost       3,950 [2],[3],[5] 3,942 [8],[9],[10]              
Investment, Identifier [Axis]: Reward Gateway (UK) Ltd, Acquisition Facility                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 600              
Investment, Identifier [Axis]: Reward Gateway (UK) Ltd, Precious Metals & Minerals, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[15],[34]         2,840              
Cost [9],[10],[15],[34]         3,230              
Investment, Identifier [Axis]: Rhondda Financing No. 1 DAC, Finance Companies, Structured - Junior Note                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [4],[5],[23]       29,586                
Cost [4],[5],[23]       27,901                
Investment, Identifier [Axis]: Rhondda Financing No. 1 DAC, Structured Junior Note                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       4,707 0              
Investment, Identifier [Axis]: Riedel Beheer B.V., Food & Beverage, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,078 [3],[4],[5],[19] 2,162 [9],[10],[15],[20]              
Cost       2,256 [3],[4],[5],[19] 2,248 [9],[10],[15],[20]              
Investment, Identifier [Axis]: Rocade Holdings LLC                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       17,500                
Investment, Identifier [Axis]: Rocade Holdings LLC, Common LP Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [12]       844 0              
Investment, Identifier [Axis]: Rocade Holdings LLC, Other Financial, Common LP Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [5],[16]       844                
Cost [5],[16]       0                
Investment, Identifier [Axis]: Rocade Holdings LLC, Other Financial, Preferred LP Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[5],[23]       73,113                
Cost [2],[5],[23]       $ 73,112                
Investment, interest rate, paid in kind [2],[5],[23]       11.30%                
Investment, Identifier [Axis]: Rocade Holdings LLC, Preferred Equity                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       $ 17,500 0              
Investment, Identifier [Axis]: Rocade Holdings LLC, Preferred LP Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [12]       $ 73,113 0              
Investment, interest rate, paid in kind       11.30%                
Investment, Identifier [Axis]: Rock Labor LLC, Media: Diversified & Production, LLC Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [5]       $ 1,534                
Cost [5]       1,252                
Investment, Identifier [Axis]: Rock Labor LLC, Media: Diversified & Production, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[5],[17]       6,422                
Cost [3],[5],[17]       6,412                
Investment, Identifier [Axis]: Rock Labor LLC, Media: Diversified & Production, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[5],[17],[23]       (30)                
Cost [3],[5],[17],[23]       (31)                
Investment, Identifier [Axis]: Rock Labor,Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,103 0              
Investment, Identifier [Axis]: Royal Buyer, LLC, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       922 2,209              
Investment, Identifier [Axis]: Royal Buyer, LLC, Industrial Other, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       7,164 [2],[3],[5],[23] 10,808 [9],[10],[14]              
Cost       7,124 [2],[3],[5],[23] 10,791 [9],[10],[14]              
Investment, Identifier [Axis]: Royal Buyer, LLC, Industrial Other, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       388 [2],[3],[5],[23] 377 [9],[10],[14]              
Cost       379 [2],[3],[5],[23] 374 [9],[10],[14]              
Investment, Identifier [Axis]: Royal Buyer, LLC, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,340 1,340              
Investment, Identifier [Axis]: Ruffalo Noel Levitz, LLC, Media Services, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       9,241 [2],[3],[5] 9,238 [8],[9],[10]              
Cost       $ 9,586 [2],[3],[5] 9,445 [8],[9],[10]              
Investment, interest rate, paid in kind [2],[3],[5]       0.50%                
Investment, Identifier [Axis]: SBP Holdings LP, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       $ 151 0              
Investment, Identifier [Axis]: SBP Holdings LP, Industrial Other, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5],[23]       13,442                
Cost [2],[3],[5],[23]       13,268                
Investment, Identifier [Axis]: SBP Holdings LP, Industrial Other, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5],[23]       (19)                
Cost [2],[3],[5],[23]       (33)                
Investment, Identifier [Axis]: SBP Holdings LP, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,065 0              
Investment, Identifier [Axis]: SISU ACQUISITIONCO., INC, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,007 0              
Investment, Identifier [Axis]: SISU ACQUISITIONCO., INC., Aerospace & Defense, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       6,463 [3],[5],[17],[23] 6,376 [8],[9],[10]              
Cost       6,773 [3],[5],[17],[23] 6,840 [8],[9],[10]              
Investment, Identifier [Axis]: SMART Financial Operations, LLC, Banking, Finance, Insurance & Real Estate, Preferred Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [6],[10],[11]         110              
Cost [6],[10],[11]         0              
Investment, Identifier [Axis]: SN BUYER, LLC, Health Care Services, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       10,592 [2],[3],[5] 10,951 [8],[9],[10]              
Cost       10,606 [2],[3],[5] 10,972 [8],[9],[10]              
Investment, Identifier [Axis]: SOLO Buyer, L.P., Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[14]         22,041              
Cost [9],[10],[14]         22,046              
Investment, Identifier [Axis]: SOLO Buyer, L.P., Technology, Partnership Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [10],[11]         516              
Cost [10],[11]         516              
Investment, Identifier [Axis]: SOLO Buyer, L.P., Technology, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[14]         (50)              
Cost [9],[10],[14]         (49)              
Investment, Identifier [Axis]: SSCP Pegasus Midco Limited, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       4,119 4,664              
Investment, Identifier [Axis]: SSCP Pegasus Midco Limited, Healthcare & Pharmaceuticals, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       3,416 [3],[4],[5],[23],[30] 2,383 [9],[10],[15],[31]              
Cost       3,416 [3],[4],[5],[23],[30] 2,566 [9],[10],[15],[31]              
Investment, Identifier [Axis]: SSCP Spring Bidco 3 Limited, Healthcare, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[4],[5],[35]       947                
Cost [3],[4],[5],[35]       932                
Investment, Identifier [Axis]: Safety Products Holdings, LLC, Non-durable Consumer Goods, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       11,567 [2],[3],[5] 11,792 [8],[9],[10]              
Cost       11,684 [2],[3],[5] 11,762 [8],[9],[10]              
Investment, Identifier [Axis]: Safety Products Holdings, LLC, Non-durable Consumer Goods, Preferred Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       468 [5],[16] 460 [10],[11]              
Cost       380 [5],[16] 372 [10],[11]              
Investment, Identifier [Axis]: Sanoptis S.A.R.L., Acquisition Capex Facility                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       16 1,751              
Investment, Identifier [Axis]: Sanoptis S.A.R.L., Healthcare & Pharmaceuticals, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,585 [3],[4],[5],[19],[23] 1,939 [9],[10],[15],[27]              
Cost       2,414 [3],[4],[5],[19],[23] 1,784 [9],[10],[15],[27]              
Investment, Identifier [Axis]: Sanoptis S.A.R.L., Healthcare & Pharmaceuticals, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       3,357 [3],[4],[5],[52] 3,886 [9],[10],[15],[57]              
Cost       3,064 [3],[4],[5],[52] 3,738 [9],[10],[15],[57]              
Investment, Identifier [Axis]: Sanoptis S.A.R.L.,CAF Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,458 0              
Investment, Identifier [Axis]: Scaled Agile, Inc., Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 416              
Investment, Identifier [Axis]: Scaled Agile, Inc., Research & Consulting Services, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,759 [2],[3],[5] 1,716 [9],[10],[14]              
Cost       1,777 [2],[3],[5] 1,701 [9],[10],[14]              
Investment, Identifier [Axis]: Scaled Agile, Inc., Research & Consulting Services, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       48 [2],[3],[5],[23] (3) [9],[10],[14]              
Cost       52 [2],[3],[5],[23] (6) [9],[10],[14]              
Investment, Identifier [Axis]: Scaled Agile, Inc., Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       280 336              
Investment, Identifier [Axis]: Scout Bidco B.V., Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 2,270              
Investment, Identifier [Axis]: Scout Bidco B.V., Diversified Manufacturing, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[15],[20]         6,310              
Cost [9],[10],[15],[20]         6,286              
Investment, Identifier [Axis]: Scout Bidco B.V., Diversified Manufacturing, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[4],[5],[19]       3,480                
Cost [3],[4],[5],[19]       3,350                
Investment, Identifier [Axis]: Scout Bidco B.V., Diversified Manufacturing, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[4],[5]       437                
Cost [2],[3],[4],[5]       443                
Investment, Identifier [Axis]: Scout Bidco B.V., Diversified Manufacturing, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       410 [2],[3],[4],[5],[19],[23] (21) [9],[10],[15],[20]              
Cost       403 [2],[3],[4],[5],[19],[23] (24) [9],[10],[15],[20]              
Investment, Identifier [Axis]: Scout Bidco B.V., Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       640 1,030              
Investment, Identifier [Axis]: Security Holdings B.V, Bridge Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value         $ 0 5,451            
Investment, interest rate, paid in kind         5.00%              
Investment, Identifier [Axis]: Security Holdings B.V, Bridge Loan, 2023 Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [40]       3,866 $ 0              
Investment, Identifier [Axis]: Security Holdings B.V, Bridge Loan, Controlled                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       $ 6,328 [40] $ 6,020 [40] 0            
Investment, interest rate, paid in kind       5.00% 5.00%              
Investment, Identifier [Axis]: Security Holdings B.V, Common Equity Interest                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value         $ 0 24,825            
Investment, Identifier [Axis]: Security Holdings B.V, Common Stock Series A, Controlled                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       $ 311 [40] 575 [40] 0            
Investment, Identifier [Axis]: Security Holdings B.V, Common Stock Series B, Controlled                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       29,080 [40] 53,728 [40] 0            
Investment, Identifier [Axis]: Security Holdings B.V, Senior Subordinated Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value         $ 0 9,525            
Investment, interest rate, paid in kind         3.10%              
Investment, Identifier [Axis]: Security Holdings B.V, Senior Subordinated Note, Controlled                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value         $ 0 0            
Investment, interest rate, paid in kind         5.00%              
Investment, Identifier [Axis]: Security Holdings B.V, Senior Subordinated Term Loan, Controlled                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       $ 10,867 [40] $ 10,534 [40] 0            
Investment, interest rate, paid in kind       3.10% 3.10%              
Investment, Identifier [Axis]: Security Holdings B.V, Senior Unsecured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value         $ 0 7,307            
Investment, interest rate, paid in kind         9.00%              
Investment, Identifier [Axis]: Security Holdings B.V, Senior Unsecured Term Loan, Controlled                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       $ 2,236 [40] $ 2,015 [40] 0            
Investment, interest rate, paid in kind       9.00% 9.00%              
Investment, Identifier [Axis]: Security Holdings B.V., Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       $ 2,209 $ 2,134              
Investment, Identifier [Axis]: Security Holdings B.V., Electrical Engineering, Bridge Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       6,328 [4],[5],[41],[53] 6,020 [10],[15],[46]              
Cost       $ 6,328 [4],[5],[41],[53] $ 6,020 [10],[15],[46]              
Investment, interest rate, paid in kind       5.00% [4],[5],[23],[41],[53] 5.00% [10],[15],[46]              
Investment, Identifier [Axis]: Security Holdings B.V., Electrical Engineering, Common Stock Series A                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       $ 311 [4],[5],[16],[41],[53] $ 575 [10],[11],[15],[46]              
Cost       560 [4],[5],[16],[41],[53] 560 [10],[11],[15],[46]              
Investment, Identifier [Axis]: Security Holdings B.V., Electrical Engineering, Common Stock Series B                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       29,080 [4],[5],[16],[41],[53] 53,728 [10],[11],[15],[46]              
Cost       35,192 [4],[5],[16],[41],[53] 35,192 [10],[11],[15],[46]              
Investment, Identifier [Axis]: Security Holdings B.V., Electrical Engineering, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [4],[5],[23],[41],[53]       3,866                
Cost [4],[5],[23],[41],[53]       3,818                
Investment, Identifier [Axis]: Security Holdings B.V., Electrical Engineering, Senior Subordinated Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       10,867 [4],[5],[41],[53] 10,534 [10],[15],[46]              
Cost       $ 10,867 [4],[5],[41],[53] $ 10,534 [10],[15],[46]              
Investment, interest rate, paid in kind       3.10% [4],[5],[23],[41],[53] 3.10% [10],[15],[46]              
Investment, Identifier [Axis]: Security Holdings B.V., Electrical Engineering, Senior Unsecured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [10],[15],[46]         $ 2,015              
Cost [10],[15],[46]         $ 2,164              
Investment, interest rate, paid in kind [10],[15],[46]         9.00%              
Investment, Identifier [Axis]: Security Holdings B.V., Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       $ 1,105 $ 1,067              
Investment, Identifier [Axis]: Security Holdings B.V.,Senior Unsecured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [4],[5],[23],[41],[53]       2,236                
Cost [4],[5],[23],[41],[53]       $ 2,318                
Investment, interest rate, paid in kind [4],[5],[23],[41],[53]       9.00%                
Investment, Identifier [Axis]: Sereni Capital NV, Consumer Cyclical, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       $ 2,522 [3],[4],[5],[32] 348 [9],[10],[15],[27]              
Cost       2,480 [3],[4],[5],[32] 331 [9],[10],[15],[27]              
Investment, Identifier [Axis]: Sereni Capital NV, Consumer Cyclical, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[15],[27]         479              
Cost [9],[10],[15],[27]         479              
Investment, Identifier [Axis]: Sereni Capital NV, Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 109              
Investment, Identifier [Axis]: Serta Simmons Bedding LLC, Home Furnishings, Common Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [5],[16]       791                
Cost [5],[16]       1,630                
Investment, Identifier [Axis]: Serta Simmons Bedding LLC, Home Furnishings, Super Priority First Out                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [8],[9]         7,148              
Cost [8],[9]         7,228              
Investment, Identifier [Axis]: Serta Simmons Bedding LLC, Home Furnishings, Super Priority Second Out                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [8],[9]         1,625              
Cost [8],[9]         3,372              
Investment, Identifier [Axis]: Shelf Bidco Ltd., Other Financial, Common Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [10],[11],[15]         1,200              
Cost [10],[11],[15]         1,200              
Investment, Identifier [Axis]: Shelf Bidco Ltd., Other Financial, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[14],[15]         33,720              
Cost [9],[10],[14],[15]         33,720              
Investment, Identifier [Axis]: Shelf Bidco Ltd., Other Financial, Common Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [4],[5],[16]       1,548                
Cost [4],[5],[16]       1,200                
Investment, Identifier [Axis]: Shelf Bidco Ltd., Other Financial, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[4],[5]       34,019                
Cost [2],[3],[4],[5]       33,742                
Investment, Identifier [Axis]: Sierra Senior Loan Strategy JV I LLC, Joint Venture, 89.01% Member Interest                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [6],[15]         37,950              
Cost [6],[15]         50,221              
Investment, Identifier [Axis]: Sierra Senior Loan Strategy JV I LLC, Joint Venture, Member Interest                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [4],[18]       39,172                
Cost [4],[18]       48,441                
Investment, Identifier [Axis]: Sierra Senior Loan Strategy JV I LLC, Member Interest                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       39,172 37,950 0            
Investment, Identifier [Axis]: Sierra Senior Loan Strategy JV LLC (Sierra JV)                        
Summary of Investment Holdings [Line Items]                        
Total contributed capital       110,100                
Investment, Identifier [Axis]: Sinari Invest, Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[4],[5],[23],[32]       1,822                
Cost [3],[4],[5],[23],[32]       1,804                
Investment, Identifier [Axis]: SmartShift Group, Inc ,Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       3,440 0              
Investment, Identifier [Axis]: SmartShift Group, Inc, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,651 0              
Investment, Identifier [Axis]: SmartShift Group, Inc., Technology, Common Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [5],[16]       288                
Cost [5],[16]       275                
Investment, Identifier [Axis]: SmartShift Group, Inc., Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5],[23]       9,332                
Cost [2],[3],[5],[23]       9,333                
Investment, Identifier [Axis]: SmartShift Group, Inc., Technology, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5],[23]       (38)                
Cost [2],[3],[5],[23]       (39)                
Investment, Identifier [Axis]: Smartling, Inc., Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 1,978              
Investment, Identifier [Axis]: Smartling, Inc., Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,176 1,176              
Investment, Identifier [Axis]: Smartling, Inc., Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       10,466 [3],[5],[17] 13,393 [9],[10],[25]              
Cost       10,427 [3],[5],[17] 13,445 [9],[10],[25]              
Investment, Identifier [Axis]: Smartling, Inc., Technology, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       (12) [3],[5],[17],[23] (24) [9],[10],[25]              
Cost       (15) [3],[5],[17],[23] (19) [9],[10],[25]              
Investment, Identifier [Axis]: Smile Brands Group Inc., Health Care Services, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       4,533 [2],[3],[5] 4,196 [9],[10],[26]              
Cost       $ 5,101 [2],[3],[5] 4,521 [9],[10],[26]              
Investment, interest rate, paid in kind [2],[3],[5]       1.00%                
Investment, Identifier [Axis]: Smile Brands Group Inc., Health Care Services, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[26]         565              
Cost [9],[10],[26]         606              
Investment, Identifier [Axis]: Smile Brands Group, Inc., Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       $ 0 38              
Investment, Identifier [Axis]: Soho Square III Debtco II SARL, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 3,383              
Investment, Identifier [Axis]: Soho Square III Debtco II SARL, Diversified Capital Markets, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       8,175 [4],[5] 5,616 [10],[15]              
Cost       $ 7,641 [4],[5] $ 5,177 [10],[15]              
Investment, interest rate, paid in kind       9.50% [4],[5] 9.50% [10],[15]              
Investment, Identifier [Axis]: Solo Buyer, L.P., Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       $ 1,330 $ 1,995              
Investment, Identifier [Axis]: Solo Buyer, L.P., Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5]       15,140                
Cost [2],[3],[5]       15,182                
Investment, Identifier [Axis]: Solo Buyer, L.P., Technology, Partnership Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [5],[16]       382                
Cost [5],[16]       516                
Investment, Identifier [Axis]: Solo Buyer, L.P., Technology, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5],[23]       615                
Cost [2],[3],[5],[23]       624                
Investment, Identifier [Axis]: Sound Point CLO XX, Ltd., Multi-Sector Holdings, Subordinated Structured Notes                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       579 [4],[16],[18] 1,192 [6],[15]              
Cost       1,806 [4],[16],[18] 2,205 [6],[15]              
Investment, Identifier [Axis]: Sparus Holdings, LLC (f/k/a Sparus Holdings, Inc.), Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       399 666              
Investment, Identifier [Axis]: Sparus Holdings, LLC (f/k/a Sparus Holdings, Inc.), Other Utility, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,858 [2],[3],[5],[23] 1,621 [9],[10],[14]              
Cost       1,880 [2],[3],[5],[23] 1,623 [9],[10],[14]              
Investment, Identifier [Axis]: Sparus Holdings, LLC (f/k/a Sparus Holdings, Inc.), Other Utility, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       62 [2],[3],[5],[23] (4) [9],[10],[14]              
Cost       64 [2],[3],[5],[23] (3) [9],[10],[14]              
Investment, Identifier [Axis]: Sparus Holdings, LLC (f/k/a Sparus Holdings, Inc.), Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       90 156              
Investment, Identifier [Axis]: Spatial Business Systems LLC, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,875 7,500              
Investment, Identifier [Axis]: Spatial Business Systems LLC, Electric, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       11,461 [3],[5],[17],[23] 5,754 [9],[10],[28]              
Cost       11,383 [3],[5],[17],[23] 5,766 [9],[10],[28]              
Investment, Identifier [Axis]: Spatial Business Systems LLC, Electric, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       (21) [3],[5],[17],[23] (35) [9],[10],[28]              
Cost       (28) [3],[5],[17],[23] (34) [9],[10],[28]              
Investment, Identifier [Axis]: Spatial Business Systems LLC, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,406 1,406              
Investment, Identifier [Axis]: Springbrook Software (SBRK Intermediate, Inc.), Enterprise Software & Services, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       13,719 [2],[3],[5] 20,510 [9],[10],[25]              
Cost       13,605 [2],[3],[5] 20,660 [9],[10],[25]              
Investment, Identifier [Axis]: Springbrook Software (SBRK Intermediate, Inc.), Enterprise Software & Services, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,791 [2],[3],[5] 2,763 [9],[10],[14]              
Cost       2,747 [2],[3],[5] 2,763 [9],[10],[14]              
Investment, Identifier [Axis]: Starnmeer B.V., Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,490 [3],[4],[5],[13] 2,477 [8],[9],[10],[15]              
Cost       2,475 [3],[4],[5],[13] 2,469 [8],[9],[10],[15]              
Investment, Identifier [Axis]: Superjet Buyer, LLC, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,369 1,825              
Investment, Identifier [Axis]: Superjet Buyer, LLC, Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       12,825 [2],[3],[5] 12,860 [8],[9],[10]              
Cost       12,726 [2],[3],[5] 12,818 [8],[9],[10]              
Investment, Identifier [Axis]: Superjet Buyer, LLC, Technology, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       444 [2],[3],[5],[23] (26) [8],[9],[10]              
Cost       432 [2],[3],[5],[23] (31) [8],[9],[10]              
Investment, Identifier [Axis]: Syniverse Holdings, Inc., Technology Distributors, Series A Preferred Equity                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       8,788 [5] 6,515 [10]              
Cost       $ 8,989 [5] $ 7,945 [10]              
Investment, interest rate, paid in kind       12.50% [5] 12.50% [10]              
Investment, Identifier [Axis]: Syntax Systems Ltd, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       $ 0 $ 1,933              
Investment, Identifier [Axis]: Syntax Systems Ltd, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       391 337              
Investment, Identifier [Axis]: Syntax Systems Ltd, Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,997 [3],[4],[5],[17],[23] 1,812 [9],[10],[15],[25]              
Cost       1,983 [3],[4],[5],[17],[23] 1,992 [9],[10],[15],[25]              
Investment, Identifier [Axis]: Syntax Systems Ltd, Technology, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       620 [3],[4],[5],[17],[23] 622 [9],[10],[15],[25]              
Cost       614 [3],[4],[5],[17],[23] 666 [9],[10],[15],[25]              
Investment, Identifier [Axis]: TA SL Cayman Aggregator Corp., Technology, Common Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       73 [5],[16] 60 [10],[11]              
Cost       50 [5],[16] 50 [10],[11]              
Investment, Identifier [Axis]: TA SL Cayman Aggregator Corp., Technology, Subordinated Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,395 [5] 2,110 [10]              
Cost       $ 2,420 [5] $ 2,143 [10]              
Investment, interest rate, paid in kind       7.80% [5] 7.80% [10]              
Investment, Identifier [Axis]: TANQUERAY BIDCO LIMITED, Technology. First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[15],[31]         $ 1,557              
Cost [9],[10],[15],[31]         1,486              
Investment, Identifier [Axis]: TSM II Luxco 10 SARL, Chemical & Plastics, Senior Subordinated Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[15]         11,118              
Cost [9],[10],[15]         $ 11,434              
Investment, interest rate, paid in kind [9],[10],[15]         9.30%              
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       $ 2,244 $ 0              
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., Delayed Draw Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,469 1,681              
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       642 177              
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       810 [2],[3],[5],[23] 591 [9],[10],[14]              
Cost       806 [2],[3],[5],[23] 591 [9],[10],[14]              
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., Technology, First Lien Senior Secured Term Loan1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5]       584                
Cost [2],[3],[5]       584                
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., Technology, Partnership Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       9 [5],[16] 5 [10],[11]              
Cost       5 [5],[16] 5 [10],[11]              
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., Technology, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       (10) [2],[3],[5],[23] (4) [9],[10],[14]              
Cost       (10) [2],[3],[5],[23] (4) [9],[10],[14]              
Investment, Identifier [Axis]: Tank Holding Corp, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       614 0              
Investment, Identifier [Axis]: Tank Holding Corp, Metal & Glass Containers, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[28]         10,877              
Cost [9],[10],[28]         10,876              
Investment, Identifier [Axis]: Tank Holding Corp, Metal & Glass Containers, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[5],[17]       7,915                
Cost [3],[5],[17]       7,867                
Investment, Identifier [Axis]: Tank Holding Corp, Metal & Glass Containers, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[5],[17],[23]       2,430                
Cost [3],[5],[17],[23]       2,376                
Investment, Identifier [Axis]: Tank Holding Corp, Metal & Glass Containers, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       223 [3],[5],[17],[23] 157 [9],[10],[28]              
Cost       219 [3],[5],[17],[23] 157 [9],[10],[28]              
Investment, Identifier [Axis]: Tank Holding Corp, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       640 698              
Investment, Identifier [Axis]: Tanqueray Bidco Limited, Capex Facility                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,153 1,088              
Investment, Identifier [Axis]: Tanqueray Bidco Limited, Technology. First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[4],[5],[23],[30]       1,730                
Cost [3],[4],[5],[23],[30]       1,502                
Investment, Identifier [Axis]: Team Air Distributing, LLC, Consumer Cyclical, Partnership Equity                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [5],[16]       420                
Cost [5],[16]       400                
Investment, Identifier [Axis]: Team Air Distributing, LLC, Consumer Cyclical, Subordinated Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [5]       590                
Cost [5]       589                
Investment, Identifier [Axis]: Team Car Care, LLC, Automotive, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       10,382 [2],[3],[5],[18] 11,970 [6],[8],[9],[10]              
Cost       10,455 [2],[3],[5],[18] 12,104 [6],[8],[9],[10]              
Investment, Identifier [Axis]: Team Services Group, Services: Consumer, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       9,646 [3],[13],[18] 9,345 [6],[9],[10],[26]              
Cost       9,737 [3],[13],[18] 9,837 [6],[9],[10],[26]              
Investment, Identifier [Axis]: Team Services Group, Services: Consumer, Second Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       4,694 [3],[5],[13],[18] 4,700 [6],[9],[10],[26]              
Cost       4,975 [3],[5],[13],[18] 4,975 [6],[9],[10],[26]              
Investment, Identifier [Axis]: Techone B.V., Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       315 203              
Investment, Identifier [Axis]: Techone B.V., Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       3,814 [3],[4],[5],[19] 3,578 [9],[10],[15],[20]              
Cost       3,801 [3],[4],[5],[19] 3,788 [9],[10],[15],[20]              
Investment, Identifier [Axis]: Techone B.V., Technology, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       201 [3],[4],[5],[19],[23] 281 [9],[10],[15],[20]              
Cost       190 [3],[4],[5],[19],[23] 296 [9],[10],[15],[20]              
Investment, Identifier [Axis]: Tencarva Machinery Company, LLC, Capital Equipment, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5]       6,226                
Cost [2],[3],[5]       6,185                
Investment, Identifier [Axis]: Tencarva Machinery Company, LLC, Capital Equipment, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [8],[9],[10]         871              
Cost [8],[9],[10]         869              
Investment, Identifier [Axis]: Tencarva Machinery Company, LLC, Capital Equipment, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [8],[9],[10]         5,368              
Cost [8],[9],[10]         5,349              
Investment, Identifier [Axis]: Tencarva Machinery Company, LLC, Capital Equipment, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       (6) [2],[3],[5],[23] (13) [8],[9],[10]              
Cost       (13) [2],[3],[5],[23] (16) [8],[9],[10]              
Investment, Identifier [Axis]: Tencarva Machinery Company, LLC, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,129 1,129              
Investment, Identifier [Axis]: Terrybear, Inc., Consumer Products, Partnership Equity                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       115 [5],[16] 255 [10],[11]              
Cost       239 [5],[16] 239 [10],[11]              
Investment, Identifier [Axis]: Terrybear, Inc., Consumer Products, Subordinated Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       260 [5] 259 [10]              
Cost       $ 270 [5] $ 259 [10]              
Investment, interest rate, paid in kind       4.00% [5] 4.00% [10]              
Investment, Identifier [Axis]: The Caprock Group, Inc. (aka TA/TCG Holdings, LLC), Brokerage, Asset Managers & Exchanges, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       $ 830 [2],[3],[5],[23] $ 798 [8],[9],[10]              
Cost       796 [2],[3],[5],[23] 779 [8],[9],[10]              
Investment, Identifier [Axis]: The Caprock Group, Inc. (aka TA/TCG Holdings, LLC), Brokerage, Asset Managers & Exchanges, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       0 [2],[3],[5],[23] (9) [8],[9],[10]              
Cost       (10) [2],[3],[5],[23] (12) [8],[9],[10]              
Investment, Identifier [Axis]: The Caprock Group, Inc. (aka TA/TCG Holdings, LLC), Brokerage, Asset Managers & Exchanges, Subordinated Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       3,578 [3],[5],[13] 3,380 [9],[10],[26]              
Cost       3,548 [3],[5],[13] 3,366 [9],[10],[26]              
Investment, Identifier [Axis]: The Caprock Group, Inc. (aka TA/TCG Holdings, LLC), Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,825 2,811              
Investment, Identifier [Axis]: The Caprock Group, Inc. (aka TA/TCG Holdings, LLC), Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       827 827              
Investment, Identifier [Axis]: The Cleaver-Brooks Company, Inc., Capital Equipment, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[5],[17]       12,680                
Cost [3],[5],[17]       12,475                
Investment, Identifier [Axis]: The Cleaver-Brooks Company, Inc., Capital Equipment, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[5],[17],[23]       0                
Cost [3],[5],[17],[23]       (49)                
Investment, Identifier [Axis]: The Cleaver-Brooks Company, Inc., Capital Equipment, Subordinated Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [5]       4,882                
Cost [5]       $ 4,863                
Investment, interest rate, paid in kind [5]       12.50%                
Investment, Identifier [Axis]: The Cleaver-Brooks Company, Inc., Industrial Equipment, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[28]         25,979              
Cost [9],[10],[28]         25,927              
Investment, Identifier [Axis]: The Cleaver-Brooks Company, Inc., Industrial Equipment, Subordinated Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [10]         5,547              
Cost [10]         $ 5,536              
Investment, interest rate, paid in kind [10]         11.00%              
Investment, Identifier [Axis]: The Cleaver-Brooks Company, Inc., Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       $ 3,229 $ 2,826              
Investment, Identifier [Axis]: The Hilb Group, LLC, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       313 1,182              
Investment, Identifier [Axis]: The Hilb Group, LLC, Insurance Brokerage, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[5],[17],[23]       11,317                
Cost [3],[5],[17],[23]       11,259                
Investment, Identifier [Axis]: The Hilb Group, LLC, Insurance Brokerage, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[25]         1,578              
Cost [9],[10],[25]         1,598              
Investment, Identifier [Axis]: The Hilb Group, LLC, Insurance Brokerage, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[25]         5,560              
Cost [9],[10],[25]         5,558              
Investment, Identifier [Axis]: The Hilb Group, LLC, Insurance Brokerage, First Lien Senior Secured Term Loan 3                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[25]         14,178              
Cost [9],[10],[25]         14,183              
Investment, Identifier [Axis]: The Octave Music Group, Inc., Media: Diversified & Production, Partnership Equity                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,152 [5],[16] 1,019 [10],[11]              
Cost       677 [5],[16] 677 [10],[11]              
Investment, Identifier [Axis]: The Octave Music Group, Inc., Media: Diversified & Production, Second Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       4,240 [2],[3],[5] 12,322 [9],[10],[14]              
Cost       4,204 [2],[3],[5] 12,289 [9],[10],[14]              
Investment, Identifier [Axis]: Thompson Rivers LLC                        
Summary of Investment Holdings [Line Items]                        
Total contributed capital                     $ 75,000  
Investment, Identifier [Axis]: Thompson Rivers LLC, Investment Funds & Vehicles, 16.0% Member Interest                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [15]         30,339              
Cost [15]         46,622              
Investment, Identifier [Axis]: Thompson Rivers LLC, Investment Funds & Vehicles, Member Interest                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [16]       13,365                
Cost [16]       28,888                
Investment, Identifier [Axis]: Thompson Rivers LLC, Member Interest                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       13,365 30,339 84,438            
Investment, Identifier [Axis]: Thompsonn Rivers LLC                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 0              
Total contributed capital       79,411 79,411              
Investment, Identifier [Axis]: Total Safety U.S. Inc., Diversified Support Services, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       5,433 [3],[17] 5,801 [8],[9]              
Cost       5,654 [3],[17] 5,996 [8],[9]              
Investment, Identifier [Axis]: Total Safety U.S. Inc., Diversified Support Services, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       3,717 [3],[5],[17] 3,561 [8],[9],[10]              
Cost       $ 3,717 [3],[5],[17] $ 3,561 [8],[9],[10]              
Investment, interest rate, paid in kind       5.00% [3],[5],[17] 5.00% [8],[9],[10]              
Investment, Identifier [Axis]: Trader Corporation, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       $ 354 $ 345              
Investment, Identifier [Axis]: Trader Corporation, Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       4,617 [3],[4],[5],[58] 4,486 [9],[10],[15],[59]              
Cost       4,428 [3],[4],[5],[58] 4,450 [9],[10],[15],[59]              
Investment, Identifier [Axis]: Trader Corporation, Technology, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       (6) [3],[4],[5],[23] (9) [9],[10],[15],[59]              
Cost       (7) [3],[4],[5],[23] (9) [9],[10],[15],[59]              
Investment, Identifier [Axis]: Transit Technologies LLC, Software, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       6,035 [2],[3],[5] 5,872 [9],[10],[26]              
Cost       6,009 [2],[3],[5] 5,987 [9],[10],[26]              
Investment, Identifier [Axis]: Transportation Insight, LLC, Air Freight & Logistics, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       10,335 [3],[5],[13] 11,032 [8],[9],[10]              
Cost       11,093 [3],[5],[13] 11,161 [8],[9],[10]              
Investment, Identifier [Axis]: Trident Maritime Systems, Inc., Aerospace & Defense, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       15,409 [2],[3],[5] 14,570 [8],[9],[10]              
Cost       15,619 [2],[3],[5] 14,597 [8],[9],[10]              
Investment, Identifier [Axis]: Trintech, Inc, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       383 0              
Investment, Identifier [Axis]: Trintech, Inc., Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[5],[17]       6,790                
Cost [3],[5],[17]       6,766                
Investment, Identifier [Axis]: Trintech, Inc., Technology, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[5],[17],[23]       140                
Cost [3],[5],[17],[23]       138                
Investment, Identifier [Axis]: Truck-Lite Co., LLC, Automotive Parts & Equipment, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       18,967 [2],[3],[5] 18,756 [9],[10],[14]              
Cost       18,917 [2],[3],[5] 19,017 [9],[10],[14]              
Investment, Identifier [Axis]: True Religion Apparel, Inc., Retail, Common Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       0 [5],[16],[18] 0 [6],[10],[11]              
Cost       0 [5],[16],[18] 0 [6],[10],[11]              
Investment, Identifier [Axis]: True Religion Apparel, Inc., Retail, Preferred Unit                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       0 [5],[16],[18] 0 [6],[10],[11]              
Cost       0 [5],[16],[18] 0 [6],[10],[11]              
Investment, Identifier [Axis]: Trystar, LLC, Power Distribution Solutions, Class A LLC Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [10],[11]         512              
Cost [10],[11]         481              
Investment, Identifier [Axis]: Trystar, LLC, Power Distribution Solutions, Class A LLC Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [5]       1,323                
Cost [5]       481                
Investment, Identifier [Axis]: Trystar, LLC, Power Distribution Solutions, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5]       6,739                
Cost [2],[3],[5]       6,723                
Investment, Identifier [Axis]: Trystar, LLC, Power Distribution Solutions, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[26]         3,075              
Cost [9],[10],[26]         3,094              
Investment, Identifier [Axis]: Trystar, LLC, Power Distribution Solutions, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [8],[9],[10]         3,750              
Cost [8],[9],[10]         3,765              
Investment, Identifier [Axis]: Turbo Buyer, Inc., Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,350 1,350              
Investment, Identifier [Axis]: Turbo Buyer, Inc., Finance Companies, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       7,939 [2],[3],[5],[23] 8,061 [8],[9],[10]              
Cost       8,149 [2],[3],[5],[23] 8,187 [8],[9],[10]              
Investment, Identifier [Axis]: Turnberry Solutions, Inc., Consumer Cyclical, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       4,898 [2],[3],[5] 4,900 [9],[10],[14]              
Cost       4,881 [2],[3],[5] 4,900 [9],[10],[14]              
Investment, Identifier [Axis]: U.S. Silica Company, Metal & Glass Containers, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[15],[25]         1,439              
Cost [9],[15],[25]         1,457              
Investment, Identifier [Axis]: UBC Ledgers Holding AB, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       840 0              
Investment, Identifier [Axis]: UBC Ledgers Holding AB, Financial Other, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[4],[5],[23],[38]       1,529                
Cost [3],[4],[5],[23],[38]       1,467                
Investment, Identifier [Axis]: UBC Ledgers Holding AB, Financial Other, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[4],[5],[23],[38]       0                
Cost [3],[4],[5],[23],[38]       0                
Investment, Identifier [Axis]: UBC Ledgers Holding AB, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       278 0              
Investment, Identifier [Axis]: UKFast Leaders Limited, Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       10,762 [3],[4],[5],[30] 9,677 [9],[10],[15],[31]              
Cost       $ 11,809 [3],[4],[5],[30] 11,441 [9],[10],[15],[31]              
Investment, interest rate, paid in kind [3],[4],[5],[30]       3.40%                
Investment, Identifier [Axis]: USLS Acquisition, Inc. (f/k/a US Legal Support, Inc.), Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       $ 2,540 3,629              
Investment, Identifier [Axis]: USLS Acquisition, Inc. (f/k/a US Legal Support, Inc.), Legal Services, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[5],[17],[23]       9,883                
Cost [3],[5],[17],[23]       10,124                
Investment, Identifier [Axis]: USLS Acquisition, Inc. (f/k/a US Legal Support, Inc.), Legal Services, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[14]         15,390              
Cost [9],[10],[14]         16,045              
Investment, Identifier [Axis]: Union Bidco Limited, Acquisition Facility                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       83 78              
Investment, Identifier [Axis]: Union Bidco Limited, Healthcare, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       877 [3],[4],[5],[23],[30] 847 [9],[10],[15],[31]              
Cost       873 [3],[4],[5],[23],[30] 870 [9],[10],[15],[31]              
Investment, Identifier [Axis]: United Therapy Holding III GmbH, Acquisition Facility                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       683 1,170              
Investment, Identifier [Axis]: United Therapy Holding III GmbH, Healthcare, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,312 [3],[5],[23],[32] 1,180 [9],[10],[15],[27]              
Cost       1,705 [3],[5],[23],[32] 1,184 [9],[10],[15],[27]              
Investment, Identifier [Axis]: Unither (Uniholding), Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       479 0              
Investment, Identifier [Axis]: Unither (Uniholding), Pharma-ceuticals, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [3],[4],[5],[19],[23]       2,037                
Cost [3],[4],[5],[19],[23]       1,956                
Investment, Identifier [Axis]: Utac Ceram, Business Services, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,559 [3],[4],[5],[19] 1,585 [9],[10],[15],[20]              
Cost       $ 1,718 [3],[4],[5],[19] 1,712 [9],[10],[15],[20]              
Investment, interest rate, paid in kind [3],[4],[5],[19]       1.80%                
Investment, Identifier [Axis]: Utac Ceram, Business Services, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       $ 3,353 [2],[3],[4],[5] 3,483 [8],[9],[10],[15]              
Cost       $ 3,520 [2],[3],[4],[5] 3,465 [8],[9],[10],[15]              
Investment, interest rate, paid in kind [2],[3],[4],[5]       1.80%                
Investment, Identifier [Axis]: VOYA CLO 2015-2, LTD., Multi-Sector Holdings, Subordinated Structured Notes                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       $ 91 [4],[18] 91 [6],[15]              
Cost       2,541 [4],[18] 2,930 [6],[15]              
Investment, Identifier [Axis]: VOYA CLO 2016-2, LTD., Multi-Sector Holdings, Subordinated Structured Notes                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       943 [4],[18] 1,551 [6],[15]              
Cost       2,717 [4],[18] 3,301 [6],[15]              
Investment, Identifier [Axis]: Validity, Inc., IT Consulting & Other Services, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       4,783 [3],[5],[17] 4,673 [9],[10],[25]              
Cost       4,741 [3],[5],[17] 4,713 [9],[10],[25]              
Investment, Identifier [Axis]: Velocity Pooling Vehicle, LLC, Automotive, Common Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2 [5],[16],[18] 2 [6],[10],[11]              
Cost       60 [5],[16],[18] 60 [6],[10],[11]              
Investment, Identifier [Axis]: Velocity Pooling Vehicle, LLC, Automotive, Warrants                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       3 [5],[16],[18] 3 [6],[10],[11]              
Cost       72 [5],[16],[18] 72 [6],[10],[11]              
Investment, Identifier [Axis]: Victoria Bidco Limited, Industrial Machinery, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       3,573 [3],[4],[5],[30] 3,238 [9],[10],[15],[34]              
Cost       4,066 [3],[4],[5],[30] 3,640 [9],[10],[15],[34]              
Investment, Identifier [Axis]: Victoria Bidco Limited, Industrial Machinery, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[15],[31]         407              
Cost [9],[10],[15],[31]         411              
Investment, Identifier [Axis]: Vision Solutions Inc., Business Equipment & Services, Second Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       5,908 [2],[3],[18] 4,771 [6],[8],[9]              
Cost       6,497 [2],[3],[18] 6,497 [6],[8],[9]              
Investment, Identifier [Axis]: VistaJet Pass Through Trust 2021-1B, Airlines, Structured Secured Note - Class B                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       3,262 [5] 3,792 [10]              
Cost       3,929 [5] 4,643 [10]              
Investment, Identifier [Axis]: Vital Buyer, LLC, Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       7,526 [2],[3],[5],[60],[61] 7,645 [8],[9],[10]              
Cost       7,423 [2],[3],[5],[60],[61] 7,520 [8],[9],[10]              
Investment, Identifier [Axis]: Vital Buyer, LLC, Technology, Partnership Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       434 [5],[16] 293 [10],[11]              
Cost       164 [5],[16] 164 [10],[11]              
Investment, Identifier [Axis]: W2O Holdings, Inc., Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 2,622              
Investment, Identifier [Axis]: W2O Holdings, Inc., Healthcare Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[5]       5,785                
Cost [2],[5]       5,894                
Investment, Identifier [Axis]: W2O Holdings, Inc., Healthcare Technology, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [8],[9],[10]         3,302              
Cost [8],[9],[10]         3,301              
Investment, Identifier [Axis]: WEST-NR ACQUISITIONCO, LLC,Insurance, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5],[23]       2,403                
Cost [2],[3],[5],[23]       2,402                
Investment, Identifier [Axis]: WWEC Holdings III CORP, Capital Goods, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[14]         13,937              
Cost [9],[10],[14]         13,956              
Investment, Identifier [Axis]: WWEC Holdings III CORP, Capital Goods, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [9],[10],[14]         1,056              
Cost [9],[10],[14]         1,059              
Investment, Identifier [Axis]: WWEC Holdings III CORP, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 3,106              
Investment, Identifier [Axis]: WWEC Holdings III CORP, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       2,019 1,366              
Investment, Identifier [Axis]: WWEC Holdings III Corp, Capital Goods, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5]       12,346                
Cost [2],[3],[5]       12,104                
Investment, Identifier [Axis]: WWEC Holdings III Corp, Capital Goods, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5],[23]       466                
Cost [2],[3],[5],[23]       419                
Investment, Identifier [Axis]: Waccamaw River LLC                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 2,480              
Total contributed capital       30,280 27,800         $ 25,000    
Total return of capital (recallable)       0 5,280         $ 5,300    
Investment, Identifier [Axis]: Waccamaw River LLC, Investment Funds & Vehicles, 20% Member Interest                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [15]         20,212              
Cost [15]         22,520              
Investment, Identifier [Axis]: Waccamaw River LLC, Investment Funds & Vehicles, Member Interest                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [4],[16]       15,470                
Cost [4],[16]       25,000                
Investment, Identifier [Axis]: Waccamaw River LLC, Member Interest                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       15,470 20,212 13,501            
Investment, Identifier [Axis]: Waccamaw River, Joint Venture                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 2,480              
Investment, Identifier [Axis]: Walker Edison Furniture Company LLC, Consumer Goods: Durable, Common Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [6],[10],[11]         0              
Cost [6],[10],[11]         3,598              
Investment, Identifier [Axis]: Watermill-QMC Midco, Inc., Automotive, Equity                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [5],[16],[18]       0                
Cost [5],[16],[18]       0                
Investment, Identifier [Axis]: Watermill-QMC Midco, Inc., Automotive, Equity (1.62% Partnership Interest)                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [6],[10],[11]         0              
Cost [6],[10],[11]         0              
Investment, Identifier [Axis]: Wawona Delaware Holdings, LLC, Beverage & Food, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [6],[8]         33              
Cost [6],[8]         41              
Investment, Identifier [Axis]: West-NR AcquisitionCo, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       2,500 0              
Investment, Identifier [Axis]: Wheels Up Experience Inc, Transportation Services, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       9,884 [5] 13,153 [10]              
Cost       10,366 [5] 12,973 [10]              
Investment, Identifier [Axis]: Whitcraft Holdings, Inc, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,760 0              
Investment, Identifier [Axis]: Whitcraft Holdings, Inc., Aerospace & Defense, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5]       8,345                
Cost [2],[3],[5]       8,304                
Investment, Identifier [Axis]: Whitcraft Holdings, Inc., Aerospace & Defense, LP Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [5],[16]       804                
Cost [5],[16]       631                
Investment, Identifier [Axis]: Whitcraft Holdings, Inc., Aerospace & Defense, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[5],[23]       67                
Cost [2],[3],[5],[23]       61                
Investment, Identifier [Axis]: White Bidco Limited, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       514 0              
Investment, Identifier [Axis]: White Bidco Limited, Technology, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value [2],[3],[4],[5],[23]       1,687                
Cost [2],[3],[4],[5],[23]       1,688                
Investment, Identifier [Axis]: Wok Holdings Inc., Retail, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       47 [2],[3],[18] 41 [6],[8],[9]              
Cost       47 [2],[3],[18] 48 [6],[8],[9]              
Investment, Identifier [Axis]: Woodland Foods, Inc., Line of Credit                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       680 456              
Investment, Identifier [Axis]: Woodland Foods, LLC, Food & Beverage, Common Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,012 [5],[16] 1,012 [10],[11]              
Cost       1,663 [5],[16] 1,663 [10],[11]              
Investment, Identifier [Axis]: Woodland Foods, LLC, Food & Beverage, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       4,946 [2],[3],[5] 4,882 [8],[9],[10]              
Cost       5,312 [2],[3],[5] 5,350 [8],[9],[10]              
Investment, Identifier [Axis]: Woodland Foods, LLC, Food & Beverage, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,378 [2],[3],[5],[23] 1,556 [8],[9],[10]              
Cost       1,531 [2],[3],[5],[23] 1,748 [8],[9],[10]              
Investment, Identifier [Axis]: World 50, Inc., Professional Services, First Lien Senior Secured Term Loan 1                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       2,414 [2],[3],[5] 8,821 [9],[10],[25]              
Cost       2,398 [2],[3],[5] 8,795 [9],[10],[25]              
Investment, Identifier [Axis]: World 50, Inc., Professional Services, First Lien Senior Secured Term Loan 2                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       8,760 [2],[3],[5] 2,428 [9],[10],[25]              
Cost       8,713 [2],[3],[5] 2,423 [9],[10],[25]              
Investment, Identifier [Axis]: Xeinadin Bidco Limited, CAF Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       2,704 3,109              
Investment, Identifier [Axis]: Xeinadin Bidco Limited, Financial Other, Common Stock                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       582 [4],[5],[16] 549 [10],[11],[15]              
Cost       565 [4],[5],[16] 565 [10],[11],[15]              
Investment, Identifier [Axis]: Xeinadin Bidco Limited, Financial Other, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       6,448 [3],[4],[5],[23],[30] 5,446 [9],[10],[15],[31]              
Cost       6,240 [3],[4],[5],[23],[30] 5,586 [9],[10],[15],[31]              
Investment, Identifier [Axis]: Xeinadin Bidco Limited, Financial Other, Subordinated Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       3,241 [4],[5] 2,502 [10],[15]              
Cost       $ 3,118 [4],[5] $ 2,553 [10],[15]              
Investment, interest rate, paid in kind       11.00% [4],[5] 11.00% [10],[15]              
Investment, Identifier [Axis]: ZB Holdco LLC, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       $ 2,932 $ 1,352              
Investment, Identifier [Axis]: ZB Holdco LLC, Food & Beverage, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       6,271 [2],[3],[5],[23] 2,628 [8],[9],[10]              
Cost       6,189 [2],[3],[5],[23] 2,623 [8],[9],[10]              
Investment, Identifier [Axis]: ZB Holdco LLC, Food & Beverage, LLC Units                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       172 [5] 189 [10],[11]              
Cost       153 [5] 153 [10],[11]              
Investment, Identifier [Axis]: ZB Holdco LLC, Food & Beverage, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       (6) [2],[3],[5],[23] (12) [8],[9],[10]              
Cost       (12) [2],[3],[5],[23] (14) [8],[9],[10]              
Investment, Identifier [Axis]: ZB Holdco LLC, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       845 845              
Investment, Identifier [Axis]: Zeppelin Bidco Limited, Capex / Acquisition Facility                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       2,667 2,516              
Investment, Identifier [Axis]: Zeppelin Bidco Limited, Services: Business, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       5,718 [3],[5] 5,162 [9],[10],[15],[43]              
Cost       6,196 [3],[5] 6,149 [9],[10],[15],[43]              
Investment, Identifier [Axis]: eShipping, LLC, Delayed Draw Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 1,650              
Investment, Identifier [Axis]: eShipping, LLC, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       1,486 1,486              
Investment, Identifier [Axis]: eShipping, LLC, Transportation Services, First Lien Senior Secured Term Loan                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       3,473 [3],[5],[17] 3,262 [9],[10],[25]              
Cost       3,426 [3],[5],[17] 3,209 [9],[10],[25]              
Investment, Identifier [Axis]: eShipping, LLC, Transportation Services, Revolver                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       0 [3],[5],[17],[23] (9) [9],[10],[25]              
Cost       (19) [3],[5],[17],[23] (24) [9],[10],[25]              
Jocassee Partners LLC                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing               $ 50,000       $ 50,000
Dividends       62,800 15,700              
Total dividend income       5,700 1,400              
Total investments at fair value       $ 1,315,630 $ 1,209,063              
Interest-earning assets, average yield       9.90% 8.60%              
Thompson Rivers LLC                        
Summary of Investment Holdings [Line Items]                        
Total dividend income       $ 0 $ 9,100              
Total investments at fair value       366,731 890,911              
Cost       386,657 949,279              
Distributions of realized gains by controlled investment companies       $ 17,700 $ 32,800              
Investment owned, outstanding loans | loan       2,305 5,414              
Investment owned, average unpaid balance       $ 200 $ 200              
Investment owned, weighted average coupon rate       4.00% 4.00%              
Thompson Rivers LLC | JPMorgan Chase Bank                        
Summary of Investment Holdings [Line Items]                        
Repurchase agreement counterparty, amount at risk       $ 83,500 $ 224,200              
Thompson Rivers LLC | Bank of America N.A.,                        
Summary of Investment Holdings [Line Items]                        
Repurchase agreement counterparty, amount at risk       170,800 428,000              
Thompson Rivers LLC | Barclays Bank                        
Summary of Investment Holdings [Line Items]                        
Repurchase agreement counterparty, amount at risk       50,000 184,200              
Waccamaw River, LLC                        
Summary of Investment Holdings [Line Items]                        
Total dividend income       $ 1,500 $ 1,900              
Investment owned, outstanding loans | loan       21,435 18,335              
Average loan amount       $ 10,338 $ 11,542              
Investment company, remaining average life to maturity       40 months 44 months              
Investment company, weighted average interest rate       12.70% 12.00%              
Sierra JV                        
Summary of Investment Holdings [Line Items]                        
Total dividend income       $ 5,700 $ 4,500              
Total investments at fair value       79,599 110,047              
Cost       85,304 125,220              
Return of capital       $ 1,800 $ 35,700              
Weighted average yield       10.10% 9.20%              
Rocade Holdings LLC                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value $ 45,000     $ 67,500                
Payments to acquire investments $ 22,500                      
All Member Of Waccamaw River LLC | Investment, Identifier [Axis]: Waccamaw River LLC                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing       0 $ 12,400              
Total contributed capital       139,020 126,620              
Total return of capital (recallable)       0 14,020              
MMALIC | Investment, Identifier [Axis]: Sierra Senior Loan Strategy JV LLC (Sierra JV)                        
Summary of Investment Holdings [Line Items]                        
Total contributed capital       14,500                
SCRS | Investment, Identifier [Axis]: Jocassee Partners LLC                        
Summary of Investment Holdings [Line Items]                        
Total unused commitments to extend financing                       $ 500,000
All Members Of Sierra JV | Investment, Identifier [Axis]: Sierra Senior Loan Strategy JV LLC (Sierra JV)                        
Summary of Investment Holdings [Line Items]                        
Total contributed capital       124,500                
Level 3                        
Summary of Investment Holdings [Line Items]                        
Unrealized gain (loss)       4,000 (45,300)              
Total investments at fair value       2,237,531 2,127,521              
Sierra Merger                        
Summary of Investment Holdings [Line Items]                        
Purchases of portfolio investments         442,200              
Existing Portfolio                        
Summary of Investment Holdings [Line Items]                        
Purchases of portfolio investments       205,900 258,500 234,000            
Equity Co-Investments                        
Summary of Investment Holdings [Line Items]                        
Purchases of portfolio investments       67,500   89,800            
Investment in joint ventures                        
Summary of Investment Holdings [Line Items]                        
Purchases of portfolio investments       2,500   13,700            
Investment in joint ventures | Jocassee Partners LLC                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       33,450 61,028              
Cost       54,563 75,941              
Joint Venture Equity Portfolio Companies                        
Summary of Investment Holdings [Line Items]                        
Purchases of portfolio investments         13,800 79,400            
Investments With No Previous Contractual Commitment To Provide Financing                        
Summary of Investment Holdings [Line Items]                        
Purchases of portfolio investments       421,200                
Investment With Previous Commitment To Provide FInancing                        
Summary of Investment Holdings [Line Items]                        
Purchases of portfolio investments       119,300                
Investment, Excluding Short Term Investment, With No Previous Commitment To Provide Financing                        
Summary of Investment Holdings [Line Items]                        
Purchases of portfolio investments         1,529,600              
Investment, Excluding Short Term Investment, With Previous Commitment To Provide Financing                        
Summary of Investment Holdings [Line Items]                        
Purchases of portfolio investments         83,600              
Long-Term Investment                        
Summary of Investment Holdings [Line Items]                        
Purchases of portfolio investments       614,648 1,162,247 1,461,057            
Repayments received/sales of portfolio investments       593,505 1,041,370 $ 943,867            
Long-Term Investment | Jocassee Partners LLC                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       1,330,526 1,219,889              
Cost       1,375,734 1,296,355              
Ginnie Mae Early Buyout Loans | Thompson Rivers LLC                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       366,700 890,900              
Cash and Cash Equivalents | Thompson Rivers LLC                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       7,100 65,100              
Cash and Cash Equivalents | Waccamaw River, LLC                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       6,600 8,000              
Consumer Loan | Waccamaw River, LLC                        
Summary of Investment Holdings [Line Items]                        
Total investments at fair value       182,300 $ 200,500              
Revolving Line Of Credit | Eclipse Business Capital Holdings LLC | Minimum                        
Summary of Investment Holdings [Line Items]                        
Investment owned, face amount       10,000                
Revolving Line Of Credit | Eclipse Business Capital Holdings LLC | Maximum                        
Summary of Investment Holdings [Line Items]                        
Investment owned, face amount       $ 125,000                
[1] Fair value as a percentage of net assets.
[2] The interest rate on these loans is subject to 3 Month SOFR, which as of December 31, 2023 was 5.33140%.
[3] Debt investment includes interest rate floor feature.
[4] Investment is not a qualifying investment as defined under Section 55(a) of the 1940 Act. Non-qualifying assets represent 28.8% of total investments at fair value as of December 31, 2023. Qualifying assets must represent at least 70% of total assets at the time of acquisition of any additional non-qualifying assets. If at any time qualifying assets do not represent at least 70% of the Company’s total assets, the Company will be precluded from acquiring any additional non-qualifying asset until such time as it complies with the requirements of Section 55(a).
[5] The fair value of the investment was determined using significant unobservable inputs.
[6] 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.
[7] Non-accrual investment.
[8] The interest rate on these loans is subject to 3 Month LIBOR, which as of December 31, 2022 was 4.76729%.
[9] Debt investment includes interest rate floor feature.
[10] The fair value of the investment was determined using significant unobservable inputs.
[11] Investment is non-income producing.
[12] The fair value of the investment was determined using significant unobservable inputs.
[13] The interest rate on these loans is subject to 6 Month SOFR, which as of December 31, 2023 was 5.15772%.
[14] The interest rate on these loans is subject to 3 Month SOFR, which as of December 31, 2022 was 4.58745%.
[15] Investment is not a qualifying investment as defined under Section 55(a) of the 1940 Act. Non-qualifying assets represent 25.9% of total investments at fair value as of December 31, 2022. 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).
[16] Investment is non-income producing.
[17] The interest rate on these loans is subject to 1 Month SOFR, which as of December 31, 2023 was 5.35472%.
[18] Investment was purchased as part of the Sierra Merger and is part of the Sierra Reference Portfolio for purposes of the Sierra Credit Support Agreement.
[19] The interest rate on these loans is subject to 3 Month EURIBOR, which as of December 31, 2023 was 3.90900%.
[20] The interest rate on these loans is subject to 3 Month EURIBOR, which as of December 31, 2022 was 2.13200%.
[21] The interest rate on these loans is subject to 1 Month BBSY, which as of December 31, 2023 was 4.31000%.
[22] The interest rate on these loans is subject to 1 Month BBSY, which as of December 31, 2022 was 3.01500%.
[23] Position or portion thereof is an unfunded loan or equity commitment.
[24] The interest rate on these loans is subject to 6 Month SOFR, which as of December 31, 2022 was 4.78131%.
[25] The interest rate on these loans is subject to 1 Month LIBOR, which as of December 31, 2022 was 4.39157%.
[26] The interest rate on these loans is subject to 6 Month LIBOR, which as of December 31, 2022 was 5.13886%.
[27] The interest rate on these loans is subject to 6 Month EURIBOR, which as of December 31, 2023 was 2.69300%.
[28] The interest rate on these loans is subject to 1 Month SOFR, which as of December 31, 2022 was 4.35806%.
[29] Non-accrual investment.
[30] The interest rate on these loans is subject to 3 Month SONIA, which as of December 31, 2023 was 5.20530%.
[31] The interest rate on these loans is subject to 3 Month SONIA, which as of December 31, 2022 was 3.75470%.
[32] The interest rate on these loans is subject to 6 Month EURIBOR, which as of December 31, 2023 was 3.86100%.
[33] The interest rate on these loans is subject to 1 Month EURIBOR, which as of December 31, 2022 was 1.88400%.
[34] The interest rate on these loans is subject to 6 Month SONIA, which as of December 31, 2022 was 4.09490%.
[35] The interest rate on these loans is subject to 6 Month SONIA, which as of December 31, 2023 was 5.13220%.
[36] The interest rate on these loans is subject to 6 Month BBSY, which as of December 31, 2023 was 4.44500%.
[37] The interest rate on these loans is subject to 6 Month BBSY, which as of December 31, 2022 was 3.76500%.
[38] The interest rate on these loans is subject to 3 Month STIBOR, which as of December 31, 2023 was 4.05200%.
[39] The interest rate on these loans is subject to 3 Month STIBOR, which as of December 31, 2022 was 2.70100%.
[40] The fair value of the investment was determined using significant unobservable inputs.
[41] As defined in the 1940 Act, the Company is deemed to be both an “affiliated person” and “control” the portfolio company because it owns more than 25% of the portfolio company’s outstanding voting securities or it has the power to exercise control over the management or policies of such portfolio company (including through a management agreement). Transactions as of and during the year ended December 31, 2023 in which the portfolio company is deemed to be a “Control Investment” of the Company were as follows:
December 31, 2022
Value		Gross Additions
(a)		Gross Reductions (b)Amount of Realized Gain (Loss)Amount of Unrealized Gain (Loss)December 31, 2023
Value		Amount of Interest or Dividends Credited to Income(c)
Portfolio CompanyType of Investment
Black Angus Steakhouses, LLC(d)
First Lien Senior Secured Term Loan (14.4% PIK)
$5,647 $1,330 $— $— $189 $7,166 $1,401 
First Lien Senior Secured Term Loan (10.0% PIK)(e)
9,147 — — — (4,278)4,869 — 
LLC Units (44.6 units)
— — — — — — — 
14,794 1,330 — — (4,089)12,035 1,401 
MVC Automotive Group GmbH(d)
Bridge Loan (4.5% Cash, 1.5% PIK)
7,149 2,613 — — — 9,762 587 
Common Equity Interest (18,000 Shares)
9,675 — — — 5,755 15,430 — 
16,824 2,613 — — 5,755 25,192 587 
MVC Private Equity Fund LP
General Partnership Interest
(1,831.4 units)
45 — (24)— 3 24 95 
Limited Partnership Interest
(71,790.4 units)
1,793 — (940)— 128 981 — 
1,838 — (964)— 131 1,005 95 
Security Holdings B.V(d)
Bridge Loan (5.0% PIK,)
6,020 308 — — — 6,328 309 
2023 Revolver (6.0% Cash)
— 3,840 (22)— 48 3,866 168 
Senior Subordinated Term Loan (3.1% PIK)
10,534 333 — — — 10,867 379 
Senior Unsecured Term Loan (6.0% Cash, 9.0% PIK)
2,015 154 — — 67 2,236 374 
Common Stock Series A (17,100 shares)
575 — — — (264)311 — 
Common Stock Series B (1,236 shares)
53,728 — — — (24,648)29,080 — 
72,872 4,635 (22)— (24,797)52,688 1,230 
Total Control Investments$106,328 $8,578 $(986)$— $(23,000)$90,920 $3,313 
(a) Gross additions include increases in the cost basis of investments resulting from new investments, follow-on investments, payment-in-kind interest or dividends, the amortization of any unearned income or discounts on debt investments, as applicable.
(b)     Gross reductions include decreases in the total cost basis of investments resulting from principal repayments, sales and return of capital.
(c)    Represents the total amount of interest, fees or dividends credited to income for the portion of the year an investment was included in the Control category.
(d) The fair value of the investment was determined using significant unobservable inputs.
(e) Non-accrual investment.
[42] The interest rate on these loans is subject to 1 Month SONIA, which as of December 31, 2023 was 5.19920%.
[43] The interest rate on these loans is subject to 1 Month SONIA, which as of December 31, 2022 was 3.43570%.
[44] The interest rate on these loans is subject to 3 Month CDOR, which as of December 31, 2023 was 5.44750%.
[45] The interest rate on these loans is subject to 3 Month CDOR, which as of December 31, 2022 was 4.93500%.
[46] 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.
[47] The interest rate on these loans is subject to 3 Month BBSY, which as of December 31, 2022 was 3.26470%.
[48] The interest rate on these loans is subject to 1 Month EURIBOR, which as of December 31, 2023 was 3.84500%.
[49] The interest rate on these loans is subject to 3 Month BBSY, which as of December 31, 2023 was 4.35750%.
[50] The interest rate on these loans is subject to 3 Month BKBM, which as of December 31, 2023 was 5.63000%.
[51] The interest rate on these loans is subject to 3 Month BKBM, which as of December 31, 2022 was 4.53000%.
[52] The interest rate on these loans is subject to 6 Month SARON, which as of December 31, 2023 was 1.69524%.
[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] The interest rate on these loans is subject to Prime, which as of December 31, 2022 was 7.50000%.
[55] The interest rate on these loans is subject to 1 Month NIBOR, which as of December 31, 2023 was 4.59000%.
[56] The interest rate on these loans is subject to 1 Month NIBOR, which as of December 31, 2022 was 3.04000%.
[57] The interest rate on these loans is subject to 3 Month SARON, which as of December 31, 2022 was 0.94212%.
[58] The interest rate on these loans is subject to 1 Month CDOR, which as of December 31, 2023 was 5.45500%.
[59] The interest rate on these loans is subject to 1 Month CDOR, which as of December 31, 2022 was 4.73750%.
[60] All debt investments are income producing, unless otherwise noted. The Company’s external investment adviser, Barings, determines in good faith the fair value of the Company’s investments in accordance with a valuation policy and processes established by the Adviser, which have been approved by the Company’s board of directors (the “Board”), and the Investment Company Act of 1940, as amended (the “1940 Act”). In addition, all debt investments are variable rate investments unless otherwise noted. Index-based floating interest rates are generally subject to a contractual minimum interest rate. Variable rate loans to the Company’s portfolio companies bear interest at a rate that may be determined by reference to the Secured Overnight Financing Rate (“SOFR”), the Euro Interbank Offered Rate (“EURIBOR”), the Bank Bill Swap Bid Rate (“BBSY”), the Stockholm Interbank Offered Rate (“STIBOR”), the Canadian Dollar Offered Rate (“CDOR”), the Sterling Overnight Index Average (“SONIA”), the Swiss Average Rate Overnight (“SARON”), the Norwegian Interbank Offered Rate (“NIBOR”), the Bank Bill Market rate (“BKBM”) or an alternate base rate (commonly based on the Federal Funds Rate or the Prime Rate), at the borrower’s option, which reset annually, semi-annually, quarterly or monthly. For each such loan, the Company has provided the interest rate in effect on the date presented. SOFR-based contracts may include a credit spread adjustment that is charged in addition to the base rate and the stated spread. The borrower may also elect to have multiple interest reset periods for each loan.
[61] All of the Company’s portfolio company investments (including joint venture investments), which as of December 31, 2023 represented 208.0% of the Company’s net assets, are subject to legal restrictions on sales. The acquisition date represents the date of the Company’s initial investment in the relevant portfolio company.