v3.26.1
Condensed Consolidated Schedule of Investments (Parenthetical) - USD ($)
$ in Thousands
 6 Months Ended 12 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Schedule of Investments [Line Items]    
Percentage of portfolio above floor rate 88.90% 88.10%
Fair Value as % of Net Assets 225.00% 227.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance $ 14,207,294  
Ending balance $ 13,364,295 $ 14,207,294
Non-controlled/non-affiliated investments    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 222.64% [1],[2] 226.84% [3],[4]
Unfunded commitments $ 1,415,535 $ 1,788,734
Fair Value (6,966) (5,969)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4] 14,167,499  
Ending balance $ 13,221,914 [1],[2] $ 14,167,499 [3],[4]
Non-controlled/affiliated investments    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 2.40% [1],[2] 0.65% [3],[4]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4] $ 39,795  
Ending balance 142,381 [1],[2] $ 39,795 [3],[4]
Non-controlled/affiliated investments | Align Precision Group, LLC - First Lien Debt 1    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 8,762  
Gross Additions 466  
Gross Reductions 0  
Net Change in Unrealized Gains (Losses) (554)  
Net Realized Gain (Loss) 0  
Ending balance 8,674 8,762
Dividend and Interest Income 465  
Non-controlled/affiliated investments | Align Precision Group, LLC - First Lien Debt 2    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 1,370  
Gross Additions 512  
Gross Reductions (4)  
Net Change in Unrealized Gains (Losses) (1)  
Net Realized Gain (Loss) 0  
Ending balance 1,877 1,370
Dividend and Interest Income 90  
Non-controlled/affiliated investments | Align Precision Group, LLC - Equity - Class A-3 Units    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 1,549  
Gross Additions 0  
Gross Reductions 0  
Net Change in Unrealized Gains (Losses) (1,047)  
Net Realized Gain (Loss) 0  
Ending balance 502 1,549
Dividend and Interest Income 0  
Non-controlled/affiliated investments | New ACI Buyer, LLC - First Lien Debt 1    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 0  
Gross Additions 22,805  
Gross Reductions 0  
Net Change in Unrealized Gains (Losses) 0  
Net Realized Gain (Loss) 0  
Ending balance 22,805 0
Dividend and Interest Income 13  
Non-controlled/affiliated investments | New ACI Buyer, LLC - First Lien Debt 2    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 0  
Gross Additions 8,362  
Gross Reductions 0  
Net Change in Unrealized Gains (Losses) 388  
Net Realized Gain (Loss) 0  
Ending balance 8,750 0
Dividend and Interest Income 5  
Non-controlled/affiliated investments | New ACI Intermediate I, LLC - Second Lien Debt    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 0  
Gross Additions 20,271  
Gross Reductions 0  
Net Change in Unrealized Gains (Losses) 0  
Net Realized Gain (Loss) 0  
Ending balance 20,271 0
Dividend and Interest Income 11  
Non-controlled/affiliated investments | New ACI Holdings, LLC - Equity - Class A Common Units    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 0  
Gross Additions 57,187  
Gross Reductions 0  
Net Change in Unrealized Gains (Losses) 4  
Net Realized Gain (Loss) 0  
Ending balance 57,191 0
Dividend and Interest Income 0  
Non-controlled/affiliated investments | Blackstone Donegal Holdings LP - Equity - LP Interests (Westland Insurance Group LTD)    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 5,315  
Gross Additions 0  
Gross Reductions (5,559)  
Net Change in Unrealized Gains (Losses) (4,492)  
Net Realized Gain (Loss) 5,559  
Ending balance 823 5,315
Dividend and Interest Income 0  
Non-controlled/affiliated investments | Material Holdings, LLC - First Lien Debt 1    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 22,074  
Gross Additions 365  
Gross Reductions (625)  
Net Change in Unrealized Gains (Losses) (1,991)  
Net Realized Gain (Loss) 0  
Ending balance 19,823 22,074
Dividend and Interest Income 786  
Non-controlled/affiliated investments | Material Holdings, LLC - First Lien Debt 2    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 0  
Gross Additions 0  
Gross Reductions 0  
Net Change in Unrealized Gains (Losses) 0  
Net Realized Gain (Loss) 0  
Ending balance 0 0
Dividend and Interest Income 0  
Non-controlled/affiliated investments | Material Holdings, LLC - First Lien Debt 3    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 725  
Gross Additions 941  
Gross Reductions 0  
Net Change in Unrealized Gains (Losses) (1)  
Net Realized Gain (Loss) 0  
Ending balance 1,665 725
Dividend and Interest Income 50  
Non-controlled/affiliated investments | Material+ Holding Company, LLC - Equity - Class C Units    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 0  
Gross Additions 0  
Gross Reductions 0  
Net Change in Unrealized Gains (Losses) 0  
Net Realized Gain (Loss) 0  
Ending balance 0 0
Dividend and Interest Income 0  
Non-controlled/affiliated investments | Material+ Holding Company, LLC - Equity - Class A Units    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 0  
Gross Additions 0  
Gross Reductions 0  
Net Change in Unrealized Gains (Losses) 0  
Net Realized Gain (Loss) 0  
Ending balance 0 0
Dividend and Interest Income 0  
Non-controlled/affiliated investments | Material+ Holding Company, LLC - Equity - Class A Preferred Units    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 0  
Gross Additions 0  
Gross Reductions 0  
Net Change in Unrealized Gains (Losses) 0  
Net Realized Gain (Loss) 0  
Ending balance 0 0
Dividend and Interest Income 0  
Non-controlled/affiliated investments | Material+ Holding Company, LLC - Equity - Class B Preferred Units    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 0  
Gross Additions 0  
Gross Reductions 0  
Net Change in Unrealized Gains (Losses) 0  
Net Realized Gain (Loss) 0  
Ending balance 0 0
Dividend and Interest Income 0  
Non-controlled/affiliated investments | Align Precision Group, LLC 1    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 8,762 0
Gross Additions   8,762
Gross Reductions   0
Net Change in Unrealized Gains (Losses)   0
Net Realized Gain (Loss)   0
Ending balance   8,762
Dividend and Interest Income   465
Non-controlled/affiliated investments | Align Precision Group, LLC 2    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 1,370 0
Gross Additions   1,366
Gross Reductions   (3)
Net Change in Unrealized Gains (Losses)   7
Net Realized Gain (Loss)   0
Ending balance   1,370
Dividend and Interest Income   106
Non-controlled/affiliated investments | Align Precision Group, LLC - Class A-3 Units    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 1,549 0
Gross Additions   384
Gross Reductions   0
Net Change in Unrealized Gains (Losses)   1,165
Net Realized Gain (Loss)   0
Ending balance   1,549
Dividend and Interest Income   0
Non-controlled/affiliated investments | Blackstone Donegal Holdings LP - LP Interests (Westland Insurance Group LTD)    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 5,315 6,403
Gross Additions   0
Gross Reductions   0
Net Change in Unrealized Gains (Losses)   (1,088)
Net Realized Gain (Loss)   0
Ending balance   5,315
Dividend and Interest Income   0
Non-controlled/affiliated investments | Material Holdings, LLC 1    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 22,074 21,547
Gross Additions   931
Gross Reductions   (297)
Net Change in Unrealized Gains (Losses)   (107)
Net Realized Gain (Loss)   0
Ending balance   22,074
Dividend and Interest Income   2,612
Non-controlled/affiliated investments | Material Holdings, LLC 2    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 0 1,397
Gross Additions   141
Gross Reductions   0
Net Change in Unrealized Gains (Losses)   (1,538)
Net Realized Gain (Loss)   0
Ending balance   0
Dividend and Interest Income   0
Non-controlled/affiliated investments | Material Holdings, LLC 3    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 725 0
Gross Additions   726
Gross Reductions   0
Net Change in Unrealized Gains (Losses)   (1)
Net Realized Gain (Loss)   0
Ending balance   725
Dividend and Interest Income   12
Non-controlled/affiliated investments | Material+ Holding Company, LLC - Class C Units    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 0 0
Gross Additions   0
Gross Reductions   0
Net Change in Unrealized Gains (Losses)   0
Net Realized Gain (Loss)   0
Ending balance   0
Dividend and Interest Income   0
Affiliated investments    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 39,795 29,347
Gross Additions 110,909 12,310
Gross Reductions (6,188) (300)
Net Change in Unrealized Gains (Losses) (7,694) (1,562)
Net Realized Gain (Loss) 5,559 0
Ending balance 142,381 39,795
Dividend and Interest Income $ 1,420 $ 3,195
Qualifying Assets    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 70.00% 70.00%
Non-qualifying Assets    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 18.60% 17.20%
Restricted Securities    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 225.04% 227.48%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance $ 14,206,900  
Ending balance $ 13,364,300 $ 14,206,900
Investment, Identifier [Axis]: 123Dentist, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.03% [1],[2],[5],[6],[7],[8] 0.03% [3],[4],[9],[10],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[10],[11],[12] $ 1,581  
Ending balance $ 1,522 [1],[2],[5],[6],[7],[8] $ 1,581 [3],[4],[9],[10],[11],[12]
Investment, Identifier [Axis]: 123Dentist, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[5],[6],[7],[8] 0.00% [3],[4],[9],[10],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[10],[11],[12] $ 213  
Ending balance $ 205 [1],[2],[5],[6],[7],[8] $ 213 [3],[4],[9],[10],[11],[12]
Investment, Identifier [Axis]: 123Dentist, Inc. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.20% [1],[2],[5],[6],[7],[8],[13] 0.08% [3],[4],[9],[10],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[10],[11],[12],[14] $ 4,948  
Ending balance 11,860 [1],[2],[5],[6],[7],[8],[13] $ 4,948 [3],[4],[9],[10],[11],[12],[14]
Investment, Identifier [Axis]: 123Dentist, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 16,832 23,908
Fair Value 0 $ 0
Investment, Identifier [Axis]: ACI Group Holdings, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[12]   1.71%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] 106,482  
Ending balance [3],[4],[9],[12]   $ 106,482
Investment, Identifier [Axis]: ACI Group Holdings, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[11],[12],[14]   0.15%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 9,138  
Ending balance [3],[4],[9],[11],[12],[14]   $ 9,138
Investment, Identifier [Axis]: ACI Group Holdings, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments   116
Fair Value   $ 0
Investment, Identifier [Axis]: ADCS Clinics Intermediate Holdings, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.10% [1],[2],[8],[15] 0.11% [3],[4],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] $ 6,708  
Ending balance $ 5,672 [1],[2],[8],[15] $ 6,708 [3],[4],[12],[16]
Investment, Identifier [Axis]: ADCS Clinics Intermediate Holdings, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.02% [1],[2],[7],[8],[15] 0.03% [3],[4],[11],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[16] $ 1,608  
Ending balance $ 1,360 [1],[2],[7],[8],[15] $ 1,608 [3],[4],[11],[12],[16]
Investment, Identifier [Axis]: ADCS Clinics Intermediate Holdings, LLC 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[7],[8],[13],[15] 0.00% [3],[4],[11],[12],[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[16] $ 186  
Ending balance 660 [1],[2],[7],[8],[13],[15] $ 186 [3],[4],[11],[12],[14],[16]
Investment, Identifier [Axis]: ADCS Clinics Intermediate Holdings, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 446 1,115
Fair Value 0 $ 0
Investment, Identifier [Axis]: AGI Group Holdings, LP - Class A-2 Common Units | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12]   0.02%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] 1,511  
Ending balance [3],[4],[12]   $ 1,511
Investment, Identifier [Axis]: AGI-CFI Holdings, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[12]   1.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] 93,442  
Ending balance [3],[4],[9],[12]   $ 93,442
Investment, Identifier [Axis]: AGI-CFI Holdings, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[11],[12]   0.10%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] 6,087  
Ending balance [3],[4],[9],[11],[12]   $ 6,087
Investment, Identifier [Axis]: AI Altius Luxembourg S.à r.l. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[11],[12],[17]   0.02%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[17] 1,166  
Ending balance [3],[4],[11],[12],[17]   $ 1,166
Investment, Identifier [Axis]: AI Altius US Bidco, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments   500
Fair Value   $ 0
Investment, Identifier [Axis]: AI Altius US Bidco, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[12],[14]   0.12%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 7,531  
Ending balance [3],[4],[9],[12],[14]   $ 7,531
Investment, Identifier [Axis]: AI Titan Group Holdings, LP - Class A-2 Common Units | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[8] 0.00% [3],[4],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 49  
Ending balance 44 [1],[2],[8] $ 49 [3],[4],[12]
Investment, Identifier [Axis]: AI Titan Parent, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 675 675
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: AI Titan Parent, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.08% [1],[2],[5],[8],[13] 0.07% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 4,543  
Ending balance 4,490 [1],[2],[5],[8],[13] $ 4,543 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: AI Titan Parent, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 544 544
Fair Value $ (5) $ (5)
Investment, Identifier [Axis]: ALKU, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[5],[7],[8] 0.01% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 774  
Ending balance $ 762 [1],[2],[5],[7],[8] $ 774 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: ALKU, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.42% [1],[2],[5],[8] 0.41% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 25,475  
Ending balance 25,085 [1],[2],[5],[8] $ 25,475 [3],[4],[9],[12]
Investment, Identifier [Axis]: AR Bidco Ltd | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 1,952  
Fair Value 0  
Investment, Identifier [Axis]: AR Bidco Ltd | Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 7,042  
Fair Value $ 0  
Investment, Identifier [Axis]: AVE Holdings I Corp. - Series A-1 Preferred Shares | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[8] 0.00%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[8] $ 0  
Investment, Identifier [Axis]: AVE Holdings I Corp. - Series A-1 Preferred Shares | | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12]   0.01%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 382  
Ending balance [3],[4],[12]   $ 382
Investment, Identifier [Axis]: Abacus Holdco 2, Oy 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[6],[7],[8],[18] 0.01% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 855  
Ending balance $ 831 [1],[2],[6],[7],[8],[18] $ 855 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Abacus Holdco 2, Oy 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[6],[7],[8],[13],[18] 0.00% [3],[4],[10],[11],[12],[14],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[14],[17] $ 130  
Ending balance 147 [1],[2],[6],[7],[8],[13],[18] $ 130 [3],[4],[10],[11],[12],[14],[17]
Investment, Identifier [Axis]: Abacus Holdco 2, Oy | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 157 177
Fair Value $ 0 0
Investment, Identifier [Axis]: Accordion Partners, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[8] 0.17%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[8] $ 10,169  
Investment, Identifier [Axis]: Accordion Partners, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8],[13] 0.03%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8],[13] $ 1,977  
Investment, Identifier [Axis]: Accordion Partners, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 6,425 8,432
Fair Value 0 $ (21)
Investment, Identifier [Axis]: Accordion Partners, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[12],[14]   0.16%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] 10,165  
Ending balance [3],[4],[9],[12],[14]   $ 10,165
Investment, Identifier [Axis]: Accordion Partners, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 1,789 1,789
Fair Value $ (9) (9)
Investment, Identifier [Axis]: Accuity Delivery Systems, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments   15,982
Fair Value   $ 0
Investment, Identifier [Axis]: Accuity Delivery Systems, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.53% [1],[2],[8],[13],[19] 0.51% [3],[4],[11],[12],[14],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[20] $ 31,778  
Ending balance 31,693 [1],[2],[8],[13],[19] $ 31,778 [3],[4],[11],[12],[14],[20]
Investment, Identifier [Axis]: Accuity Delivery Systems, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 5,327 5,327
Fair Value $ (27) $ (27)
Investment, Identifier [Axis]: Acumatica Holdings, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.19% [1],[2],[5],[7],[8],[13] 0.18% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 11,477  
Ending balance 11,332 [1],[2],[5],[7],[8],[13] $ 11,477 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: Acumatica Holdings, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 1,935 1,935
Fair Value (19) $ (19)
Investment, Identifier [Axis]: Aevex Holdings, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12],[16]   0.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] 46,598  
Ending balance [3],[4],[12],[16]   $ 46,598
Investment, Identifier [Axis]: Aevex Holdings, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12],[16]   1.72%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] $ 107,406  
Ending balance [3],[4],[12],[16]   $ 107,406
Investment, Identifier [Axis]: Albireo Energy, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 1.28% [1],[2],[8],[15] 1.23% [3],[4],[11],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[16] $ 76,535  
Ending balance $ 76,132 [1],[2],[8],[15] $ 76,535 [3],[4],[11],[12],[16]
Investment, Identifier [Axis]: Albireo Energy, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.49% [1],[2],[8],[15] 0.37% [3],[4],[11],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[16] $ 22,972  
Ending balance $ 29,024 [1],[2],[8],[15] $ 22,972 [3],[4],[11],[12],[16]
Investment, Identifier [Axis]: Albireo Energy, LLC 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.05% [1],[2],[7],[8],[13],[15] 0.10% [3],[4],[11],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[16] $ 6,198  
Ending balance 3,250 [1],[2],[7],[8],[13],[15] $ 6,198 [3],[4],[11],[12],[16]
Investment, Identifier [Axis]: Albireo Energy, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 21,750  
Fair Value $ 0  
Investment, Identifier [Axis]: Align Precision Group, LLC - Class A-3 Units | Non-Controlled Affiliated    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[8],[21] 0.01%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[8],[21] $ 502  
Investment, Identifier [Axis]: Align Precision Group, LLC - Class A-3 Units | Non-Controlled Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12],[22]   0.03%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[22] $ 1,549  
Ending balance [3],[4],[12],[22]   $ 1,549
Investment, Identifier [Axis]: Align Precision Group, LLC 1 | Non-Controlled Affiliated    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.15% [1],[2],[8],[15],[21] 0.14% [3],[4],[11],[12],[16],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[16],[22] $ 8,762  
Ending balance $ 8,674 [1],[2],[8],[15],[21] $ 8,762 [3],[4],[11],[12],[16],[22]
Investment, Identifier [Axis]: Align Precision Group, LLC 2 | Non-Controlled Affiliated    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.03% [1],[2],[7],[8],[13],[15],[21] 0.02% [3],[4],[11],[12],[14],[16],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[16],[22] $ 1,370  
Ending balance 1,877 [1],[2],[7],[8],[13],[15],[21] $ 1,370 [3],[4],[11],[12],[14],[16],[22]
Investment, Identifier [Axis]: Align Precision Group, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 135 560
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Allium Buyer, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.03% [1],[2],[7],[8],[13],[15] 0.02% [3],[4],[11],[12],[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[16] $ 1,557  
Ending balance 1,549 [1],[2],[7],[8],[13],[15] $ 1,557 [3],[4],[11],[12],[14],[16]
Investment, Identifier [Axis]: Allium Buyer, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 249 249
Fair Value $ (7) $ (7)
Investment, Identifier [Axis]: American Restoration Holdings, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.07% [1],[2],[8],[15] 0.07% [3],[4],[11],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[16] $ 4,556  
Ending balance $ 4,055 [1],[2],[8],[15] $ 4,556 [3],[4],[11],[12],[16]
Investment, Identifier [Axis]: American Restoration Holdings, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.02% [1],[2],[7],[8],[15] 0.02% [3],[4],[11],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[16] $ 1,357  
Ending balance $ 1,207 [1],[2],[7],[8],[15] $ 1,357 [3],[4],[11],[12],[16]
Investment, Identifier [Axis]: American Restoration Holdings, LLC 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.03% [1],[2],[7],[8],[15] 0.02% [3],[4],[11],[12],[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[16] $ 1,143  
Ending balance $ 1,560 [1],[2],[7],[8],[15] $ 1,143 [3],[4],[11],[12],[14],[16]
Investment, Identifier [Axis]: American Restoration Holdings, LLC 4 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.05% [1],[2],[7],[8],[15] 0.06% [3],[4],[11],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[16] $ 3,514  
Ending balance $ 3,127 [1],[2],[7],[8],[15] $ 3,514 [3],[4],[11],[12],[16]
Investment, Identifier [Axis]: American Restoration Holdings, LLC 5 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.05% [1],[2],[7],[8],[13],[15] 0.05% [3],[4],[11],[12],[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[16] $ 3,014  
Ending balance $ 2,892 [1],[2],[7],[8],[13],[15] $ 3,014 [3],[4],[11],[12],[14],[16]
Investment, Identifier [Axis]: American Restoration Holdings, LLC 6 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[7],[8],[15] 0.01% [3],[4],[11],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[16] $ 587  
Ending balance 522 [1],[2],[7],[8],[15] $ 587 [3],[4],[11],[12],[16]
Investment, Identifier [Axis]: American Restoration Holdings, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 4,447 5,210
Fair Value $ 0 0
Investment, Identifier [Axis]: American Restoration Holdings, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments   601
Fair Value   $ 0
Investment, Identifier [Axis]: Amerilife Holdings, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 1.62% [1],[2],[5],[8] 1.53% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 95,857  
Ending balance $ 96,298 [1],[2],[5],[8] $ 95,857 [3],[4],[9],[12]
Investment, Identifier [Axis]: Amerilife Holdings, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.07% [1],[2],[5],[7],[8],[13] 0.05% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 3,172  
Ending balance $ 3,965 [1],[2],[5],[7],[8],[13] $ 3,172 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: Amerilife Holdings, LLC 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8],[13] 0.09%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8],[13] $ 5,558  
Investment, Identifier [Axis]: Amerilife Holdings, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 25,896  
Fair Value 0  
Investment, Identifier [Axis]: Amerilife Holdings, LLC | Delayed Draw Term Loan 1    
Schedule of Investments [Line Items]    
Unfunded commitments   29
Fair Value   0
Investment, Identifier [Axis]: Amerilife Holdings, LLC | Delayed Draw Term Loan 2    
Schedule of Investments [Line Items]    
Unfunded commitments   31,555
Fair Value   (79)
Investment, Identifier [Axis]: Amerilife Holdings, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 12,015 13,350
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Amerivet Partners Management, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[8],[13] 0.08%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[8],[13] $ 4,804  
Investment, Identifier [Axis]: Amerivet Partners Management, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8] 0.00%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8] $ 139  
Investment, Identifier [Axis]: Amerivet Partners Management, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[12],[14]   0.08%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] 5,253  
Ending balance [3],[4],[9],[12],[14]   $ 5,253
Investment, Identifier [Axis]: Amerivet Partners Management, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 589 589
Fair Value $ (51) $ 0
Investment, Identifier [Axis]: Anaplan, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.40% [1],[2],[5],[8],[13] 0.39% [3],[4],[9],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 24,242  
Ending balance 23,758 [1],[2],[5],[8],[13] $ 24,242 [3],[4],[9],[12],[14]
Investment, Identifier [Axis]: Anaplan, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 161 161
Fair Value (3) (3)
Investment, Identifier [Axis]: Animal Wellness Investments S.p.A | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 2,418  
Fair Value $ 0  
Investment, Identifier [Axis]: Animal Wellness Investments S.p.A | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[6],[8],[13],[18] 0.24%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[6],[8],[13],[18] $ 14,441  
Investment, Identifier [Axis]: Animal Wellness Investments SpA | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments   2,400
Fair Value   0
Investment, Identifier [Axis]: Animal Wellness Investments SpA | Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments   14,878
Fair Value   $ 0
Investment, Identifier [Axis]: Apex Companies, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.18% [1],[2],[8],[15] 0.17% [3],[4],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] $ 10,841  
Ending balance $ 10,786 [1],[2],[8],[15] $ 10,841 [3],[4],[12],[16]
Investment, Identifier [Axis]: Apex Companies, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.03% [1],[2],[8],[15] 0.03% [3],[4],[11],[12],[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[16] $ 1,817  
Ending balance $ 1,950 [1],[2],[8],[15] $ 1,817 [3],[4],[11],[12],[14],[16]
Investment, Identifier [Axis]: Apex Companies, LLC 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.14% [1],[2],[7],[8],[15] 0.12% [3],[4],[11],[12],[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[16] $ 7,242  
Ending balance $ 8,233 [1],[2],[7],[8],[15] $ 7,242 [3],[4],[11],[12],[14],[16]
Investment, Identifier [Axis]: Apex Companies, LLC 4 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[7],[8],[13],[15] 0.13%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[7],[8],[13],[15] $ 7,717  
Investment, Identifier [Axis]: Apex Companies, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 20,497  
Fair Value 0  
Investment, Identifier [Axis]: Apex Companies, LLC | Delayed Draw Term Loan 1    
Schedule of Investments [Line Items]    
Unfunded commitments   1,030
Fair Value   0
Investment, Identifier [Axis]: Apex Companies, LLC | Delayed Draw Term Loan 2    
Schedule of Investments [Line Items]    
Unfunded commitments   28,233
Fair Value   $ (141)
Investment, Identifier [Axis]: Apple AU Finco Pty, Ltd. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 2,931  
Fair Value $ (14)  
Investment, Identifier [Axis]: Apple AU Finco Pty, Ltd. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[6],[7],[8],[13],[19] 0.00%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[6],[7],[8],[13],[19] $ 100  
Investment, Identifier [Axis]: Apple SG Bidco Pte. Ltd. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 15  
Fair Value $ 0  
Investment, Identifier [Axis]: Apple SG Bidco Pte. Ltd. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[6],[7],[8],[19] 0.51%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[6],[7],[8],[19] $ 30,299  
Investment, Identifier [Axis]: Armada Parent, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.02% [1],[2],[5],[7],[8],[13] 0.02% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 1,247  
Ending balance $ 1,241 [1],[2],[5],[7],[8],[13] $ 1,247 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: Armada Parent, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.42% [1],[2],[5],[8] 0.40% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 25,216  
Ending balance 25,089 [1],[2],[5],[8] $ 25,216 [3],[4],[9],[12]
Investment, Identifier [Axis]: Armada Parent, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 3,000 3,000
Fair Value 0 0
Investment, Identifier [Axis]: Arnhem BidCo, GmbH | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 9,126 9,126
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Arnhem BidCo, GmbH | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 1.00% [1],[2],[6],[8],[13],[18] 0.97% [3],[4],[10],[12],[14],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[12],[14],[17] $ 60,829  
Ending balance $ 59,142 [1],[2],[6],[8],[13],[18] $ 60,829 [3],[4],[10],[12],[14],[17]
Investment, Identifier [Axis]: Artisan Acquisitionco, Ltd. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.95% [1],[2],[6],[8],[18] 0.91% [3],[4],[10],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[12],[17] $ 57,011  
Ending balance $ 56,440 [1],[2],[6],[8],[18] $ 57,011 [3],[4],[10],[12],[17]
Investment, Identifier [Axis]: Artisan Acquisitionco, Ltd. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.13% [1],[2],[6],[8],[18] 0.13% [3],[4],[10],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[12],[17] $ 7,918  
Ending balance $ 7,839 [1],[2],[6],[8],[18] $ 7,918 [3],[4],[10],[12],[17]
Investment, Identifier [Axis]: Aryeh Bidco Investment Ltd | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments   1,049
Fair Value   0
Investment, Identifier [Axis]: Aryeh Bidco Investment Ltd | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments   749
Fair Value   0
Investment, Identifier [Axis]: Aryeh Bidco Investment Ltd | Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments   5,634
Fair Value   $ 0
Investment, Identifier [Axis]: Aryeh Bidco Investment, Ltd. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[6],[7],[8] 0.09%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[6],[7],[8] $ 5,452  
Investment, Identifier [Axis]: Aryeh Bidco Investment, Ltd. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[6],[7],[8],[13] 0.00%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[6],[7],[8],[13] $ 217  
Investment, Identifier [Axis]: Aryeh Bidco Investment, Ltd. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 898  
Fair Value 0  
Investment, Identifier [Axis]: Aryeh Bidco Investment, Ltd. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 658  
Fair Value $ 0  
Investment, Identifier [Axis]: Ascend Buyer, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.34% [1],[2],[5],[8],[13] 0.33% [3],[4],[9],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 20,668  
Ending balance $ 20,447 [1],[2],[5],[8],[13] $ 20,668 [3],[4],[9],[12],[14]
Investment, Identifier [Axis]: Ascend Buyer, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.03% [1],[2],[5],[7],[8] 0.03% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 1,599  
Ending balance 1,583 [1],[2],[5],[7],[8] $ 1,599 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: Ascend Buyer, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 2,572 2,572
Fair Value 0 $ 0
Investment, Identifier [Axis]: Auctane, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[12]   4.39%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] 274,123  
Ending balance [3],[4],[9],[12]   $ 274,123
Investment, Identifier [Axis]: Auctane, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[11],[12]   0.05%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 3,224  
Ending balance [3],[4],[9],[11],[12]   $ 3,224
Investment, Identifier [Axis]: Auctane, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[8] 4.67%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[8] $ 277,347  
Investment, Identifier [Axis]: AuditBoard, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.23% [1],[2],[5],[8],[13] 0.22% [3],[4],[9],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 13,684  
Ending balance $ 13,530 [1],[2],[5],[8],[13] $ 13,684 [3],[4],[9],[12],[14]
Investment, Identifier [Axis]: AuditBoard, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.03% [1],[2],[5],[7],[8] 0.03% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 1,752  
Ending balance 1,748 [1],[2],[5],[7],[8] $ 1,752 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: AuditBoard, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 1,766 1,766
Fair Value (18) $ 0
Investment, Identifier [Axis]: Axsome Therapeutics, Inc. - Common Stock | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[10]   0.01%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10] $ 438  
Ending balance [3],[4],[10]   $ 438
Investment, Identifier [Axis]: Axsome Therapeutics, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.20% [1],[2],[5],[6],[7],[8] 0.19% [3],[4],[9],[10],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[10],[11],[12] $ 11,740  
Ending balance $ 11,740 [1],[2],[5],[6],[7],[8] $ 11,740 [3],[4],[9],[10],[11],[12]
Investment, Identifier [Axis]: Axsome Therapeutics, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.12% [1],[2],[5],[6],[7],[8],[13] 0.11% [3],[4],[9],[10],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[10],[11],[12],[14] $ 6,848  
Ending balance 6,848 [1],[2],[5],[6],[7],[8],[13] $ 6,848 [3],[4],[9],[10],[11],[12],[14]
Investment, Identifier [Axis]: Axsome Therapeutics, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 8,805  
Fair Value 0  
Investment, Identifier [Axis]: Axsome Therapeutics, Inc. | Delayed Draw Term Loan 1    
Schedule of Investments [Line Items]    
Unfunded commitments   8,805
Fair Value   0
Investment, Identifier [Axis]: Axsome Therapeutics, Inc. | Delayed Draw Term Loan 2    
Schedule of Investments [Line Items]    
Unfunded commitments   8,805
Fair Value   $ 0
Investment, Identifier [Axis]: Axsome Therapeutics, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 1,957  
Fair Value $ 0  
Investment, Identifier [Axis]: Azurite Intermediate Holdings, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.59% [1],[2],[5],[8],[13] 0.59% [3],[4],[9],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 36,919  
Ending balance 35,200 [1],[2],[5],[8],[13] $ 36,919 [3],[4],[9],[12],[14]
Investment, Identifier [Axis]: Azurite Intermediate Holdings, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 4,104 4,104
Fair Value $ (354) $ (17)
Investment, Identifier [Axis]: BP Purchaser, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.10% [1],[2],[5],[8] 0.09% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 5,751  
Ending balance $ 5,917 [1],[2],[5],[8] $ 5,751 [3],[4],[9],[12]
Investment, Identifier [Axis]: Baker Tilly Advisory Group, LP 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.89% [1],[2],[5],[8] 0.85% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 53,135  
Ending balance $ 52,866 [1],[2],[5],[8] $ 53,135 [3],[4],[9],[12]
Investment, Identifier [Axis]: Baker Tilly Advisory Group, LP 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.07% [1],[2],[5],[7],[8],[13] 0.06% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 3,644  
Ending balance $ 4,166 [1],[2],[5],[7],[8],[13] $ 3,644 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: Baker Tilly Advisory Group, LP 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8] 0.01%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8] $ 729  
Investment, Identifier [Axis]: Baker Tilly Advisory Group, LP | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments   1,260
Fair Value   (13)
Investment, Identifier [Axis]: Baker Tilly Advisory Group, LP | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 10,339 10,339
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Bamboo US BidCo, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.02% [1],[2],[7],[8],[15] 0.02% [3],[4],[11],[12],[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[16] $ 956  
Ending balance $ 947 [1],[2],[7],[8],[15] $ 956 [3],[4],[11],[12],[14],[16]
Investment, Identifier [Axis]: Bamboo US BidCo, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[7],[8],[15] 0.01% [3],[4],[11],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[16] $ 412  
Ending balance $ 387 [1],[2],[7],[8],[15] $ 412 [3],[4],[11],[12],[16]
Investment, Identifier [Axis]: Bamboo US BidCo, LLC 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[7],[8],[15] 0.00% [3],[4],[11],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[16] $ 106  
Ending balance $ 102 [1],[2],[7],[8],[15] $ 106 [3],[4],[11],[12],[16]
Investment, Identifier [Axis]: Bamboo US BidCo, LLC 4 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[7],[8],[13],[15] 0.00%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[7],[8],[13],[15] $ 50  
Investment, Identifier [Axis]: Bamboo US BidCo, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments   24
Fair Value   0
Investment, Identifier [Axis]: Bamboo US BidCo, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 92 142
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Banyan Software Holdings, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.15% [1],[2],[8],[15] 0.15% [3],[4],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] $ 9,297  
Ending balance $ 9,158 [1],[2],[8],[15] $ 9,297 [3],[4],[12],[16]
Investment, Identifier [Axis]: Banyan Software Holdings, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.11% [1],[2],[7],[8],[13],[15] 0.11% [3],[4],[11],[12],[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[16] $ 6,745  
Ending balance $ 6,647 [1],[2],[7],[8],[13],[15] $ 6,745 [3],[4],[11],[12],[14],[16]
Investment, Identifier [Axis]: Banyan Software Holdings, LLC 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.06% [1],[2],[7],[8],[13],[15] 0.02% [3],[4],[11],[12],[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[16] $ 1,308  
Ending balance $ 3,795 [1],[2],[7],[8],[13],[15] $ 1,308 [3],[4],[11],[12],[14],[16]
Investment, Identifier [Axis]: Banyan Software Holdings, LLC 4 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[7],[8],[13],[15] 0.00%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[7],[8],[13],[15] $ 173  
Investment, Identifier [Axis]: Banyan Software Holdings, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 7,467 10,169
Fair Value 0 0
Investment, Identifier [Axis]: Banyan Software Holdings, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 821 1,006
Fair Value $ 0 $ (3)
Investment, Identifier [Axis]: Barbri Holdings, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 1.32% [1],[2],[5],[8] 1.28% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 80,225  
Ending balance $ 78,224 [1],[2],[5],[8] $ 80,225 [3],[4],[9],[12]
Investment, Identifier [Axis]: Bayshore Intermediate #2, LP 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 1.63% [1],[2],[5],[8] 1.56% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 97,682  
Ending balance $ 96,650 [1],[2],[5],[8] $ 97,682 [3],[4],[9],[12]
Investment, Identifier [Axis]: Bayshore Intermediate #2, LP 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.07% [1],[2],[5],[7],[8],[13] 0.04% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 2,287  
Ending balance 4,270 [1],[2],[5],[7],[8],[13] $ 2,287 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: Bayshore Intermediate #2, LP | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 4,722 6,936
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Bazaarvoice, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 3.98% [1],[2],[8],[13],[18] 3.82% [3],[4],[12],[14],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[14],[17] $ 238,337  
Ending balance 236,265 [1],[2],[8],[13],[18] $ 238,337 [3],[4],[12],[14],[17]
Investment, Identifier [Axis]: Bazaarvoice, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 37,992 37,992
Fair Value $ (285) $ 0
Investment, Identifier [Axis]: Beacon Dc, Ltd. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 2.25% [1],[2],[5],[6],[8] 2.15% [3],[4],[9],[10],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[10],[12] $ 134,152  
Ending balance $ 133,816 [1],[2],[5],[6],[8] $ 134,152 [3],[4],[9],[10],[12]
Investment, Identifier [Axis]: Beacon Dc, Ltd. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.49% [1],[2],[5],[6],[7],[8],[13] 0.04% [3],[4],[9],[10],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[10],[11],[12],[14] $ 2,530  
Ending balance 29,307 [1],[2],[5],[6],[7],[8],[13] $ 2,530 [3],[4],[9],[10],[11],[12],[14]
Investment, Identifier [Axis]: Beacon Dc, Ltd. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments   27,239
Fair Value   0
Investment, Identifier [Axis]: Beacon Dc, Ltd. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 18,530 18,530
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Beacon HC, Ltd. - Class A Shares | | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.08% [1],[2],[6],[8] 0.02% [3],[4],[10],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[12] $ 1,290  
Ending balance $ 4,643 [1],[2],[6],[8] $ 1,290 [3],[4],[10],[12]
Investment, Identifier [Axis]: Beacon HC, Ltd. - Class C Shares | | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[6],[8] 0.00% [3],[4],[10],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[12] $ 72  
Ending balance 102 [1],[2],[6],[8] $ 72 [3],[4],[10],[12]
Investment, Identifier [Axis]: Bending Spoons US, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[10],[16]   0.28%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[16] $ 17,272  
Ending balance [3],[4],[10],[16]   $ 17,272
Investment, Identifier [Axis]: Bidco 76 S.p.A. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.42% [1],[2],[6],[8],[18] 0.41% [3],[4],[10],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[12],[17] $ 25,863  
Ending balance $ 25,146 [1],[2],[6],[8],[18] $ 25,863 [3],[4],[10],[12],[17]
Investment, Identifier [Axis]: Bimini Group Purchaser, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 1.15% [1],[2],[5],[8] 1.11% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 69,184  
Ending balance $ 68,145 [1],[2],[5],[8] $ 69,184 [3],[4],[9],[12]
Investment, Identifier [Axis]: Bimini Group Purchaser, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.21% [1],[2],[5],[7],[8],[13] 0.21% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 12,993  
Ending balance 12,747 [1],[2],[5],[7],[8],[13] $ 12,993 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: Bimini Group Purchaser, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 7,337 7,337
Fair Value $ 0 0
Investment, Identifier [Axis]: Biotouch Global Solutions, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[8],[13],[15] 0.39%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[8],[13],[15] $ 22,929  
Investment, Identifier [Axis]: Biotouch Global Solutions, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[7],[8],[13],[15] 0.01%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[7],[8],[13],[15] $ 709  
Investment, Identifier [Axis]: Biotouch Global Solutions, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 5,409 5,409
Fair Value (41) $ (41)
Investment, Identifier [Axis]: Biotouch Global Solutions, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12],[14],[16]   0.38%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[14],[16] 23,555  
Ending balance [3],[4],[12],[14],[16]   $ 23,555
Investment, Identifier [Axis]: Biotouch Global Solutions, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 865 1,623
Fair Value $ 0 $ (24)
Investment, Identifier [Axis]: BlackRock ICS US Treasury Fund    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2] 0.05% [3],[4]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4] $ 3,167  
Ending balance $ 2 [1],[2] $ 3,167 [3],[4]
Investment, Identifier [Axis]: Blackstone Donegal Holdings LP - LP Interests (Westland Insurance Group LTD) | Non-Controlled Affiliated    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[6],[8],[21] 0.01%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[6],[8],[21] $ 823  
Investment, Identifier [Axis]: Blackstone Donegal Holdings LP - LP Interests (Westland Insurance Group LTD) | Non-Controlled Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[10],[12],[22]   0.10%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[12],[22] $ 5,315  
Ending balance [3],[4],[10],[12],[22]   $ 5,315
Investment, Identifier [Axis]: BlueCat Networks USA, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.03% [1],[2],[5],[8] 0.03% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 1,937  
Ending balance $ 1,948 [1],[2],[5],[8] $ 1,937 [3],[4],[9],[12]
Investment, Identifier [Axis]: BlueCat Networks USA, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[5],[7],[8] 0.01% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 342  
Ending balance $ 344 [1],[2],[5],[7],[8] $ 342 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: BlueCat Networks USA, Inc. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[5],[7],[8] 0.00% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 235  
Ending balance $ 236 [1],[2],[5],[7],[8] $ 235 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: BlueCat Networks USA, Inc. 4 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.03% [1],[2],[5],[7],[8] 0.03% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 1,573  
Ending balance $ 1,581 [1],[2],[5],[7],[8] $ 1,573 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: Bluefin Holding, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.46% [1],[2],[8],[13],[15] 0.44% [3],[4],[12],[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[14],[16] $ 27,291  
Ending balance 27,291 [1],[2],[8],[13],[15] $ 27,291 [3],[4],[12],[14],[16]
Investment, Identifier [Axis]: Bluefin Holding, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 2,244 2,244
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Bond Lux HoldCo S.à r.l. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.19% [1],[2],[6],[7],[8],[18] 0.18% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 11,389  
Ending balance $ 11,241 [1],[2],[6],[7],[8],[18] $ 11,389 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Box Co-Invest Blocker, LLC - (BP Alpha Holdings, LP) - Class A Units | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[8] 0.00%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[8] $ 0  
Investment, Identifier [Axis]: Box Co-Invest Blocker, LLC - (BP Alpha Holdings, LP) - Class A Units | | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12]   0.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 0  
Ending balance [3],[4],[12]   $ 0
Investment, Identifier [Axis]: Box Co-Invest Blocker, LLC - (BP Alpha Holdings, LP) - Class C Preferred Units | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[8] 0.00%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[8] $ 0  
Investment, Identifier [Axis]: Box Co-Invest Blocker, LLC - (BP Alpha Holdings, LP) - Class C Preferred Units | | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12]   0.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 0  
Ending balance [3],[4],[12]   $ 0
Investment, Identifier [Axis]: Brave Parent Holdings, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 1.10% [1],[2],[8],[13],[19] 1.07% [3],[4],[9],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 67,106  
Ending balance 65,262 [1],[2],[8],[13],[19] $ 67,106 [3],[4],[9],[12],[14]
Investment, Identifier [Axis]: Brave Parent Holdings, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 6,409 3,641
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Brilliance Technologies, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.03% [1],[2],[8],[13],[19] 0.02% [3],[4],[11],[12],[14],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[20] $ 1,499  
Ending balance $ 1,492 [1],[2],[8],[13],[19] $ 1,499 [3],[4],[11],[12],[14],[20]
Investment, Identifier [Axis]: Brilliance Technologies, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.04% [1],[2],[7],[8],[19] 0.04% [3],[4],[11],[12],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[20] $ 2,400  
Ending balance $ 2,401 [1],[2],[7],[8],[19] $ 2,400 [3],[4],[11],[12],[20]
Investment, Identifier [Axis]: Brilliance Technologies, Inc. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.04% [1],[2],[7],[8],[19] 0.03% [3],[4],[11],[12],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[20] $ 2,130  
Ending balance $ 2,131 [1],[2],[7],[8],[19] $ 2,130 [3],[4],[11],[12],[20]
Investment, Identifier [Axis]: Brilliance Technologies, Inc. 4 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[7],[8],[13],[19] 0.01%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[7],[8],[13],[19] $ 352  
Investment, Identifier [Axis]: Brilliance Technologies, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 836 1,200
Fair Value 0 (1)
Investment, Identifier [Axis]: Brilliance Technologies, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 900 900
Fair Value $ (9) $ 0
Investment, Identifier [Axis]: Businessolver.com, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.09% [1],[2],[5],[8] 0.08% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 5,096  
Ending balance $ 5,083 [1],[2],[5],[8] $ 5,096 [3],[4],[9],[12]
Investment, Identifier [Axis]: CB Nike Holdco, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.71% [1],[2],[8],[15] 0.63% [3],[4],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] $ 39,643  
Ending balance $ 42,209 [1],[2],[8],[15] $ 39,643 [3],[4],[12],[16]
Investment, Identifier [Axis]: CCBlue Bidco, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.18% [1],[2],[5],[7],[8] 0.16% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 10,035  
Ending balance 10,619 [1],[2],[5],[7],[8] $ 10,035 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: CCI Buyer, Inc. | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[12],[14]   0.35%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 21,901  
Ending balance [3],[4],[9],[12],[14]   $ 21,901
Investment, Identifier [Axis]: CCI Buyer, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[8],[13] 0.37%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[8],[13] $ 21,901  
Investment, Identifier [Axis]: CCI Buyer, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 1,289 1,289
Fair Value $ (13) $ (13)
Investment, Identifier [Axis]: CFCo, LLC (Benefytt Technologies, Inc.) - Class B Units | | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[8] 0.00% [3],[4],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 0  
Ending balance $ 0 [1],[2],[8] $ 0 [3],[4],[12]
Investment, Identifier [Axis]: CFCo, LLC (Benefytt Technologies, Inc.) | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[7],[8],[18],[23],[24] 0.00% [3],[4],[11],[12],[17],[25],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[17],[25],[26] $ 0  
Ending balance $ 0 [1],[2],[7],[8],[18],[23],[24] $ 0 [3],[4],[11],[12],[17],[25],[26]
Investment, Identifier [Axis]: CFGI Holdings, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.10% [1],[2],[5],[8],[13] 0.10% [3],[4],[9],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 5,971  
Ending balance 5,788 [1],[2],[5],[8],[13] $ 5,971 [3],[4],[9],[12],[14]
Investment, Identifier [Axis]: CFGI Holdings, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 1,050 1,050
Fair Value $ (26) $ (21)
Investment, Identifier [Axis]: CFS Brands, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 2.32% [1],[2],[8],[13],[15] 2.21% [3],[4],[12],[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[14],[16] $ 138,043  
Ending balance 137,995 [1],[2],[8],[13],[15] $ 138,043 [3],[4],[12],[14],[16]
Investment, Identifier [Axis]: CFS Brands, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 7,877 8,483
Fair Value 0 0
Investment, Identifier [Axis]: CJX Borrower, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 171  
Fair Value $ 0  
Investment, Identifier [Axis]: CJX Borrower, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8],[13] 0.01%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8],[13] $ 713  
Investment, Identifier [Axis]: CRCI Longhorn Holdings, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[8],[13] 0.19%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[8],[13] $ 11,272  
Investment, Identifier [Axis]: CRCI Longhorn Holdings, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8],[13] 0.02%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8],[13] $ 1,257  
Investment, Identifier [Axis]: CRCI Longhorn Holdings, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 1,608 2,867
Fair Value 0 $ 0
Investment, Identifier [Axis]: CRCI Longhorn Holdings, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[12],[14]   0.18%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] 11,339  
Ending balance [3],[4],[9],[12],[14]   $ 11,339
Investment, Identifier [Axis]: CRCI Longhorn Holdings, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 1,912 1,912
Fair Value $ (25) $ (16)
Investment, Identifier [Axis]: CT Technologies Intermediate Holdings, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.47% [1],[2],[5],[8] 0.45% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 28,062  
Ending balance $ 27,921 [1],[2],[5],[8] $ 28,062 [3],[4],[9],[12]
Investment, Identifier [Axis]: CT Technologies Intermediate Holdings, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[5],[7],[8],[13] 0.01% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 407  
Ending balance $ 405 [1],[2],[5],[7],[8],[13] $ 407 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: CT Technologies Intermediate Holdings, Inc. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.47% [1],[2],[5],[8],[13] 0.45% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 28,112  
Ending balance $ 27,691 [1],[2],[5],[8],[13] $ 28,112 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: CT Technologies Intermediate Holdings, Inc. 4 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.20% [1],[2],[5],[8] 0.19% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 12,116  
Ending balance $ 11,935 [1],[2],[5],[8] $ 12,116 [3],[4],[9],[12]
Investment, Identifier [Axis]: CT Technologies Intermediate Holdings, Inc. 5 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.09% [1],[2],[5],[7],[8],[13] 0.08% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 5,193  
Ending balance 5,098 [1],[2],[5],[7],[8],[13] $ 5,193 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: CT Technologies Intermediate Holdings, Inc. | Delayed Draw Term Loan 1    
Schedule of Investments [Line Items]    
Unfunded commitments 2,002 1,914
Fair Value 0 0
Investment, Identifier [Axis]: CT Technologies Intermediate Holdings, Inc. | Delayed Draw Term Loan 2    
Schedule of Investments [Line Items]    
Unfunded commitments 1,735 1,735
Fair Value 0 0
Investment, Identifier [Axis]: CT Technologies Intermediate Holdings, Inc. | Delayed Draw Term Loan 3    
Schedule of Investments [Line Items]    
Unfunded commitments 1,737 88
Fair Value 0 0
Investment, Identifier [Axis]: CT Technologies Intermediate Holdings, Inc. | Delayed Draw Term Loan 4    
Schedule of Investments [Line Items]    
Unfunded commitments 1,165 1,737
Fair Value 0 0
Investment, Identifier [Axis]: CT Technologies Intermediate Holdings, Inc. | Delayed Draw Term Loan 5    
Schedule of Investments [Line Items]    
Unfunded commitments   1,165
Fair Value   0
Investment, Identifier [Axis]: CT Technologies Intermediate Holdings, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 5,904 5,904
Fair Value $ (59) $ (59)
Investment, Identifier [Axis]: Cadillac BidCo S.à r.l. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[6],[7],[8],[18] 0.76%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[6],[7],[8],[18] $ 45,251  
Investment, Identifier [Axis]: Caerus Midco 2 S.à r.l. - Additional Vehicle Units | | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[6],[8] 0.00% [3],[4],[10],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[12] $ 1  
Ending balance $ 8 [1],[2],[6],[8] $ 1 [3],[4],[10],[12]
Investment, Identifier [Axis]: Caerus Midco 2 S.à r.l. - Vehicle Units | | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[6],[8] 0.00% [3],[4],[10],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[12] $ 54  
Ending balance $ 37 [1],[2],[6],[8] $ 54 [3],[4],[10],[12]
Investment, Identifier [Axis]: Caerus US 1, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.18% [1],[2],[5],[6],[7],[8] 0.18% [3],[4],[9],[10],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[10],[11],[12] $ 11,169  
Ending balance $ 10,778 [1],[2],[5],[6],[7],[8] $ 11,169 [3],[4],[9],[10],[11],[12]
Investment, Identifier [Axis]: Caerus US 1, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.03% [1],[2],[5],[6],[7],[8] 0.03% [3],[4],[9],[10],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[10],[11],[12] $ 2,154  
Ending balance $ 2,078 [1],[2],[5],[6],[7],[8] $ 2,154 [3],[4],[9],[10],[11],[12]
Investment, Identifier [Axis]: Caerus US 1, Inc. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[5],[6],[7],[8] 0.01% [3],[4],[9],[10],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[10],[11],[12] $ 315  
Ending balance $ 304 [1],[2],[5],[6],[7],[8] $ 315 [3],[4],[9],[10],[11],[12]
Investment, Identifier [Axis]: Caerus US 1, Inc. 4 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.80% [1],[2],[5],[6],[8] 0.79% [3],[4],[9],[10],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[10],[12] $ 49,250  
Ending balance $ 47,530 [1],[2],[5],[6],[8] $ 49,250 [3],[4],[9],[10],[12]
Investment, Identifier [Axis]: Caerus US 1, Inc. 5 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[5],[6],[7],[8],[13] 0.02% [3],[4],[9],[10],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[10],[11],[12],[14] $ 1,014  
Ending balance 886 [1],[2],[5],[6],[7],[8],[13] $ 1,014 [3],[4],[9],[10],[11],[12],[14]
Investment, Identifier [Axis]: Caerus US 1, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 362 273
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Cambium Holdings, LLC - Senior Preferred Interest | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.24% [1],[2],[8] 0.26% [3],[4],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 15,641  
Ending balance $ 14,362 [1],[2],[8] $ 15,641 [3],[4],[12]
Investment, Identifier [Axis]: Cambium Learning Group, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 4.41% [1],[2],[5],[8],[13] 4.41% [3],[4],[9],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 275,439  
Ending balance 262,026 [1],[2],[5],[8],[13] $ 275,439 [3],[4],[9],[12],[14]
Investment, Identifier [Axis]: Cambium Learning Group, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 43,592 43,592
Fair Value $ 0 0
Investment, Identifier [Axis]: Cambrex Corp. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[8],[13] 0.38%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[8],[13] $ 22,426  
Investment, Identifier [Axis]: Cambrex Corp. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[8],[13] 0.05%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[8],[13] $ 3,240  
Investment, Identifier [Axis]: Cambrex Corp. | Delayed Draw Term Loan 1    
Schedule of Investments [Line Items]    
Unfunded commitments   3,323
Fair Value   (17)
Investment, Identifier [Axis]: Cambrex Corp. | Delayed Draw Term Loan 2    
Schedule of Investments [Line Items]    
Unfunded commitments   7,735
Fair Value   $ 0
Investment, Identifier [Axis]: Cambrex Corp. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[12],[14]   0.35%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] 22,105  
Ending balance [3],[4],[9],[12],[14]   $ 22,105
Investment, Identifier [Axis]: Cambrex Corp. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 2,077 2,741
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Canadian Hospital Specialties, Ltd. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.34% [1],[2],[6],[7],[8],[15] 0.34% [3],[4],[10],[11],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[16] $ 21,145  
Ending balance $ 20,362 [1],[2],[6],[7],[8],[15] $ 21,145 [3],[4],[10],[11],[12],[16]
Investment, Identifier [Axis]: Canadian Hospital Specialties, Ltd. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.02% [1],[2],[5],[6],[7],[8],[13] 0.02% [3],[4],[10],[11],[12],[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[14],[16] $ 1,399  
Ending balance $ 1,269 [1],[2],[5],[6],[7],[8],[13] $ 1,399 [3],[4],[10],[11],[12],[14],[16]
Investment, Identifier [Axis]: Canadian Hospital Specialties, Ltd. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.12% [1],[2],[6],[7],[8],[18] 0.12% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 7,272  
Ending balance 7,130 [1],[2],[6],[7],[8],[18] $ 7,272 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Canadian Hospital Specialties, Ltd. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 1,607 1,500
Fair Value 0 $ 0
Investment, Identifier [Axis]: Capstone Acquisition Holdings, Inc. | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12],[16]   0.09%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] $ 5,404  
Ending balance [3],[4],[12],[16]   $ 5,404
Investment, Identifier [Axis]: Capstone Acquisition Holdings, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[8],[15] 0.09%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[8],[15] $ 5,377  
Investment, Identifier [Axis]: Caribou Bidco, Ltd. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.86% [1],[2],[6],[8],[18] 0.85% [10],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [10],[12],[17] $ 52,948  
Ending balance $ 50,801 [1],[2],[6],[8],[18] $ 52,948 [10],[12],[17]
Investment, Identifier [Axis]: Carr Riggs & Ingram Capital, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.12% [1],[2],[8],[19] 0.12% [3],[4],[11],[12],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[20] $ 7,388  
Ending balance $ 7,259 [1],[2],[8],[19] $ 7,388 [3],[4],[11],[12],[20]
Investment, Identifier [Axis]: Carr Riggs & Ingram Capital, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.02% [1],[2],[7],[8],[13],[19] 0.02% [3],[4],[11],[12],[14],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[20] $ 1,003  
Ending balance $ 1,282 [1],[2],[7],[8],[13],[19] $ 1,003 [3],[4],[11],[12],[14],[20]
Investment, Identifier [Axis]: Carr Riggs & Ingram Capital, LLC 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[7],[8],[13],[19] 0.00%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[7],[8],[13],[19] $ 259  
Investment, Identifier [Axis]: Carr Riggs & Ingram Capital, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 2,434 2,757
Fair Value 0 0
Investment, Identifier [Axis]: Carr Riggs & Ingram Capital, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 1,446 1,726
Fair Value $ 0 $ (9)
Investment, Identifier [Axis]: Cassipoee, SASU | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[6],[8],[18] 0.00% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 184  
Ending balance $ 179 [1],[2],[6],[8],[18] $ 184 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Castle Management Borrower, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[8],[13],[15] 0.38%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[8],[13],[15] $ 22,608  
Investment, Identifier [Axis]: Castle Management Borrower, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[7],[8],[13],[15] 0.00%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[7],[8],[13],[15] $ 292  
Investment, Identifier [Axis]: Castle Management Borrower, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 14,164 14,164
Fair Value 0 $ 0
Investment, Identifier [Axis]: Castle Management Borrower, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12],[14],[16]   0.36%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[14],[16] 22,725  
Ending balance [3],[4],[12],[14],[16]   $ 22,725
Investment, Identifier [Axis]: Castle Management Borrower, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 2,625 2,917
Fair Value 0 $ 0
Investment, Identifier [Axis]: Channelside AcquisitionCo, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[12]   0.31%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] 19,505  
Ending balance [3],[4],[9],[12]   $ 19,505
Investment, Identifier [Axis]: Channelside AcquisitionCo, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[11],[12],[14]   0.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 265  
Ending balance [3],[4],[9],[11],[12],[14]   $ 265
Investment, Identifier [Axis]: Channelside AcquisitionCo, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[8],[13] 0.32%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[8],[13] $ 18,841  
Investment, Identifier [Axis]: Channelside AcquisitionCo, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 3,178 2,913
Fair Value (79) $ 0
Investment, Identifier [Axis]: Charger Debt Merger Sub, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[12]   0.19%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] 11,748  
Ending balance [3],[4],[9],[12]   $ 11,748
Investment, Identifier [Axis]: Charger Debt Merger Sub, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[11],[12],[14]   0.09%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 5,634  
Ending balance [3],[4],[9],[11],[12],[14]   $ 5,634
Investment, Identifier [Axis]: Charger Debt Merger Sub, LLC | Delayed Draw Term Loan 1    
Schedule of Investments [Line Items]    
Unfunded commitments   6,235
Fair Value   (16)
Investment, Identifier [Axis]: Charger Debt Merger Sub, LLC | Delayed Draw Term Loan 2    
Schedule of Investments [Line Items]    
Unfunded commitments   1,152
Fair Value   0
Investment, Identifier [Axis]: Charger Debt Merger Sub, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments   1,152
Fair Value   $ 0
Investment, Identifier [Axis]: Chartwell Cumming Holding Corp. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[8],[13],[15] 2.67%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[8],[13],[15] $ 158,366  
Investment, Identifier [Axis]: Chartwell Cumming Holding Corp. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 20,763  
Fair Value (335)  
Investment, Identifier [Axis]: Chartwell Cumming Holding, Corp. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12],[16]   1.38%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] 86,330  
Ending balance [3],[4],[12],[16]   $ 86,330
Investment, Identifier [Axis]: Chartwell Cumming Holding, Corp. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[11],[12],[14],[16]   0.15%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[16] 9,548  
Ending balance [3],[4],[11],[12],[14],[16]   $ 9,548
Investment, Identifier [Axis]: Chartwell Cumming Holding, Corp. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12],[16]   0.22%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] 13,933  
Ending balance [3],[4],[12],[16]   $ 13,933
Investment, Identifier [Axis]: Chartwell Cumming Holding, Corp. 4 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[11],[12],[16]   0.13%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[16] 8,115  
Ending balance [3],[4],[11],[12],[16]   $ 8,115
Investment, Identifier [Axis]: Chartwell Cumming Holding, Corp. 5 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[11],[12],[16]   0.26%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[16] $ 16,136  
Ending balance [3],[4],[11],[12],[16]   $ 16,136
Investment, Identifier [Axis]: Chartwell Cumming Holding, Corp. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments   20,763
Fair Value   $ 0
Investment, Identifier [Axis]: Cielo Bidco, Ltd. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[6],[7],[8],[18] 0.00% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 204  
Ending balance $ 201 [1],[2],[6],[7],[8],[18] $ 204 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Cielo Bidco, Ltd. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[6],[7],[8],[13],[18] 0.00% [3],[4],[10],[11],[12],[14],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[14],[17] $ 81  
Ending balance $ 87 [1],[2],[6],[7],[8],[13],[18] $ 81 [3],[4],[10],[11],[12],[14],[17]
Investment, Identifier [Axis]: Cielo Bidco, Ltd. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[6],[7],[8],[18] 0.00% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 76  
Ending balance $ 76 [1],[2],[6],[7],[8],[18] $ 76 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Cielo Bidco, Ltd. 4 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[6],[7],[8],[13],[18] 0.00% [3],[4],[10],[11],[12],[14],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[14],[17] $ 44  
Ending balance 66 [1],[2],[6],[7],[8],[13],[18] $ 44 [3],[4],[10],[11],[12],[14],[17]
Investment, Identifier [Axis]: Cielo Bidco, Ltd. | Delayed Draw Term Loan 1    
Schedule of Investments [Line Items]    
Unfunded commitments 9 18
Fair Value 0 0
Investment, Identifier [Axis]: Cielo Bidco, Ltd. | Delayed Draw Term Loan 2    
Schedule of Investments [Line Items]    
Unfunded commitments 78 100
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Cisive Holdings Corp. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.13% [1],[2],[8],[13],[15] 0.13% [3],[4],[12],[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[14],[16] $ 8,126  
Ending balance 7,546 [1],[2],[8],[13],[15] $ 8,126 [3],[4],[12],[14],[16]
Investment, Identifier [Axis]: Cisive Holdings Corp. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 1,111 1,111
Fair Value $ (22) $ (22)
Investment, Identifier [Axis]: Clearview Buyer, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.09% [1],[2],[5],[8],[13] 0.12% [3],[4],[9],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 7,182  
Ending balance 5,381 [1],[2],[5],[8],[13] $ 7,182 [3],[4],[9],[12],[14]
Investment, Identifier [Axis]: Clearview Buyer, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 1,142 1,142
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Color Intermediate, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.33% [1],[2],[5],[8] 0.32% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 19,758  
Ending balance 19,461 [1],[2],[5],[8] $ 19,758 [3],[4],[9],[12]
Investment, Identifier [Axis]: Commander Buyer, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 8,671 8,671
Fair Value $ (43) $ (43)
Investment, Identifier [Axis]: Commander Buyer, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.53% [1],[2],[5],[8],[13] 0.50% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 31,454  
Ending balance 31,453 [1],[2],[5],[8],[13] $ 31,454 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: Commander Buyer, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 5,781 5,781
Fair Value $ (58) $ (58)
Investment, Identifier [Axis]: Community Management Holdings Midco 2, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.16% [1],[2],[5],[8] 0.15% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 9,577  
Ending balance $ 9,481 [1],[2],[5],[8] $ 9,577 [3],[4],[9],[12]
Investment, Identifier [Axis]: Community Management Holdings Midco 2, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.12% [1],[2],[5],[7],[8],[13] 0.04% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 2,564  
Ending balance $ 7,339 [1],[2],[5],[7],[8],[13] $ 2,564 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: Community Management Holdings Midco 2, LLC 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.09% [1],[2],[5],[7],[8] 0.09% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 5,500  
Ending balance 5,445 [1],[2],[5],[7],[8] $ 5,500 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: Community Management Holdings Midco 2, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 177 4,531
Fair Value 0 0
Investment, Identifier [Axis]: Community Management Holdings Midco 2, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 482 965
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Community Management Holdings Parent, LP - Series A Preferred Units | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[8],[13] 0.01% [3],[4],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 341  
Ending balance 405 [1],[2],[8],[13] $ 341 [3],[4],[12]
Investment, Identifier [Axis]: Community Management Holdings Parent, LP | Equity    
Schedule of Investments [Line Items]    
Unfunded commitments 158  
Fair Value 0  
Investment, Identifier [Axis]: Compsych Investments Corp. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 3,471 3,471
Fair Value $ (165) $ (152)
Investment, Identifier [Axis]: Compsych Investments Corp. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.20% [1],[2],[5],[8],[13] 0.19% [3],[4],[9],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 11,851  
Ending balance $ 11,658 [1],[2],[5],[8],[13] $ 11,851 [3],[4],[9],[12],[14]
Investment, Identifier [Axis]: Confine Visual Bidco 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.23% [1],[2],[6],[8],[18] 0.20% [10],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [10],[12],[17] $ 12,694  
Ending balance $ 13,448 [1],[2],[6],[8],[18] $ 12,694 [10],[12],[17]
Investment, Identifier [Axis]: Confine Visual Bidco 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[6],[7],[8],[18] 0.00% [10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [10],[11],[12],[17] $ 303  
Ending balance $ 321 [1],[2],[6],[7],[8],[18] $ 303 [10],[11],[12],[17]
Investment, Identifier [Axis]: Confluence Technologies, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.04% [1],[2],[7],[8],[19] 0.03% [11],[12],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [11],[12],[20] $ 2,182  
Ending balance $ 2,149 [1],[2],[7],[8],[19] $ 2,182 [11],[12],[20]
Investment, Identifier [Axis]: Connatix Buyer, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.31% [1],[2],[5],[8] 0.33% [9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [9],[12] $ 20,820  
Ending balance $ 18,291 [1],[2],[5],[8] $ 20,820 [9],[12]
Investment, Identifier [Axis]: Connatix Buyer, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.05% [1],[2],[5],[7],[8],[13] 0.04% [9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [9],[11],[12],[14] $ 2,308  
Ending balance $ 3,204 [1],[2],[5],[7],[8],[13] $ 2,308 [9],[11],[12],[14]
Investment, Identifier [Axis]: Connatix Buyer, Inc. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.02% [1],[2],[5],[7],[8] 0.02% [9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [9],[11],[12] $ 1,115  
Ending balance 979 [1],[2],[5],[7],[8] $ 1,115 [9],[11],[12]
Investment, Identifier [Axis]: Connatix Buyer, Inc. 4 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [9],[11],[12],[14]   0.01%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [9],[11],[12],[14] 490  
Ending balance [9],[11],[12],[14]   $ 490
Investment, Identifier [Axis]: Connatix Buyer, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments   510
Fair Value   0
Investment, Identifier [Axis]: Connatix Buyer, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 1,521 3,042
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Connatix Parent, LLC - Class L Common Units | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[8] 0.00% [3],[4],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 194  
Ending balance 40 [1],[2],[8] $ 194 [3],[4],[12]
Investment, Identifier [Axis]: Consor Intermediate II, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 2,175 2,361
Fair Value $ (4) $ 0
Investment, Identifier [Axis]: Consor Intermediate II, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.11% [1],[2],[5],[8],[13] 0.10% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 6,190  
Ending balance 6,395 [1],[2],[5],[8],[13] $ 6,190 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: Consor Intermediate II, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 800 854
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Continental Buyer, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.62% [1],[2],[5],[8],[13] 0.59% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 36,949  
Ending balance $ 36,746 [1],[2],[5],[8],[13] $ 36,949 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: Continental Buyer, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.37% [1],[2],[5],[7],[8] 0.35% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 21,855  
Ending balance $ 21,855 [1],[2],[5],[7],[8] $ 21,855 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: Continental Buyer, Inc. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8],[13] 0.02%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8],[13] $ 1,249  
Investment, Identifier [Axis]: Continental Buyer, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 2,914 4,163
Fair Value 0 (10)
Investment, Identifier [Axis]: Continental Buyer, Inc. | Revolver 1    
Schedule of Investments [Line Items]    
Unfunded commitments 2,715 2,715
Fair Value 0 0
Investment, Identifier [Axis]: Continental Buyer, Inc. | Revolver 2    
Schedule of Investments [Line Items]    
Unfunded commitments 4,350 4,350
Fair Value (22) (22)
Investment, Identifier [Axis]: Continental Buyer, Inc. | Revolver 3    
Schedule of Investments [Line Items]    
Unfunded commitments 2,081 2,081
Fair Value $ (10) $ (10)
Investment, Identifier [Axis]: Corfin Holdings, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 4.39% [1],[2],[5],[8] 4.18% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 261,290  
Ending balance $ 260,600 [1],[2],[5],[8] $ 261,290 [3],[4],[9],[12]
Investment, Identifier [Axis]: Corfin Holdings, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.03% [1],[2],[5],[7],[8] 0.03% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 1,564  
Ending balance $ 1,560 [1],[2],[5],[7],[8] $ 1,564 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: Coupa Software, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[6],[7],[8] 0.03%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[6],[7],[8] $ 1,763  
Investment, Identifier [Axis]: Coupa Software, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[6],[7],[8] 0.00%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[6],[7],[8] $ 161  
Investment, Identifier [Axis]: Coupa Software, Inc. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[6],[7],[8],[13] 0.00%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[6],[7],[8],[13] $ 81  
Investment, Identifier [Axis]: Coupa Software, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments   164
Fair Value   $ 0
Investment, Identifier [Axis]: Coupa Software, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [9],[10],[11],[12],[14]   0.03%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [9],[10],[11],[12],[14] 1,810  
Ending balance [9],[10],[11],[12],[14]   $ 1,810
Investment, Identifier [Axis]: Coupa Software, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 42 126
Fair Value $ 0 $ (1)
Investment, Identifier [Axis]: Creek Parent, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 1.13% [1],[2],[5],[8],[13] 1.08% [3],[4],[9],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 67,597  
Ending balance 66,922 [1],[2],[5],[8],[13] $ 67,597 [3],[4],[9],[12],[14]
Investment, Identifier [Axis]: Creek Parent, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 9,893 9,893
Fair Value $ (507) $ (173)
Investment, Identifier [Axis]: Crewline Buyer, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 1.01% [1],[2],[8],[13],[15] 0.99% [12],[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [12],[14],[16] $ 61,956  
Ending balance 59,910 [1],[2],[8],[13],[15] $ 61,956 [12],[14],[16]
Investment, Identifier [Axis]: Crewline Buyer, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 6,438 6,438
Fair Value $ (187) $ 0
Investment, Identifier [Axis]: Cronos Crimson Holdings, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 1.19% [1],[2],[5],[8] 1.14% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 71,173  
Ending balance $ 70,462 [1],[2],[5],[8] $ 71,173 [3],[4],[9],[12]
Investment, Identifier [Axis]: Cronos Crimson Holdings, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.25% [1],[2],[5],[8] 0.24% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 14,758  
Ending balance $ 14,610 [1],[2],[5],[8] $ 14,758 [3],[4],[9],[12]
Investment, Identifier [Axis]: Cronos Crimson Holdings, Inc. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.29% [1],[2],[5],[7],[8] 0.28% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 17,647  
Ending balance $ 17,471 [1],[2],[5],[7],[8] $ 17,647 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: Crumbl Enterprises, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.02% [1],[2],[5],[7],[8],[13] 0.02% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 1,484  
Ending balance 1,445 [1],[2],[5],[7],[8],[13] $ 1,484 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: Crumbl Enterprises, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 120 120
Fair Value $ (3) $ (1)
Investment, Identifier [Axis]: CustomInk, LLC - Series A Preferred Units | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.11% [1],[2],[8] 0.11% [3],[4],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 6,252  
Ending balance 6,729 [1],[2],[8] $ 6,252 [3],[4],[12]
Investment, Identifier [Axis]: CustomInk, LLC | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12],[16],[17]   2.82%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16],[17] $ 175,837  
Ending balance [3],[4],[12],[16],[17]   $ 175,837
Investment, Identifier [Axis]: CustomInk, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[8],[15],[24] 2.97%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[8],[15],[24] $ 175,835  
Investment, Identifier [Axis]: DCA Investment Holding, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8] 0.30%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8] $ 17,761  
Investment, Identifier [Axis]: DCA Investment Holding, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8] 0.05%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8] $ 3,062  
Investment, Identifier [Axis]: DCA Investment Holdings, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[12],[25]   0.33%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[25] 20,358  
Ending balance [3],[4],[9],[12],[25]   $ 20,358
Investment, Identifier [Axis]: DCA Investment Holdings, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[11],[12],[25]   0.01%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[25] 824  
Ending balance [3],[4],[9],[11],[12],[25]   $ 824
Investment, Identifier [Axis]: DCA Investment Holdings, LLC 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[11],[12],[25]   0.11%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[25] $ 6,772  
Ending balance [3],[4],[9],[11],[12],[25]   $ 6,772
Investment, Identifier [Axis]: DCA TopCo, LP - Common Units | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[8] 0.18%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[8] $ 10,144  
Investment, Identifier [Axis]: DCG Acquisition Corp. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments   1,724
Fair Value   $ 0
Investment, Identifier [Axis]: DCG Acquisition Corp. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.65% [1],[2],[5],[8],[13] 0.63% [3],[4],[9],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 39,245  
Ending balance 38,567 [1],[2],[5],[8],[13] $ 39,245 [3],[4],[9],[12],[14]
Investment, Identifier [Axis]: DCG Acquisition Corp. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 5,937 5,937
Fair Value $ (59) $ (59)
Investment, Identifier [Axis]: DM Intermediate Parent, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.30% [1],[2],[5],[8] 0.29% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 18,039  
Ending balance $ 17,948 [1],[2],[5],[8] $ 18,039 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: DM Intermediate Parent, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.13% [1],[2],[5],[7],[8],[13] 0.08% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 4,727  
Ending balance $ 7,603 [1],[2],[5],[7],[8],[13] $ 4,727 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: DM Intermediate Parent, LLC 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.19% [1],[2],[5],[7],[8],[13] 0.01% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 350  
Ending balance 11,253 [1],[2],[5],[7],[8],[13] $ 350 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: DM Intermediate Parent, LLC | Delayed Draw Term Loan 1    
Schedule of Investments [Line Items]    
Unfunded commitments 187 3,082
Fair Value 0 0
Investment, Identifier [Axis]: DM Intermediate Parent, LLC | Delayed Draw Term Loan 2    
Schedule of Investments [Line Items]    
Unfunded commitments 2,038 13,319
Fair Value 0 (67)
Investment, Identifier [Axis]: DM Intermediate Parent, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 5,206 4,790
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: DTA Intermediate II, Ltd. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.71% [1],[2],[8],[15] 0.68% [3],[4],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] $ 42,431  
Ending balance $ 42,431 [1],[2],[8],[15] $ 42,431 [3],[4],[12],[16]
Investment, Identifier [Axis]: DTA Intermediate II, Ltd. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.18% [1],[2],[5],[7],[8],[13] 0.17% [3],[4],[12],[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[14],[16] $ 10,713  
Ending balance $ 10,713 [1],[2],[5],[7],[8],[13] $ 10,713 [3],[4],[12],[14],[16]
Investment, Identifier [Axis]: DTA Intermediate II, Ltd. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.38% [1],[2],[8],[15] 0.37% [3],[4],[11],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[16] $ 23,176  
Ending balance 22,692 [1],[2],[8],[15] $ 23,176 [3],[4],[11],[12],[16]
Investment, Identifier [Axis]: DTA Intermediate II, Ltd. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 10,769 10,769
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: DTA, LP - Class A Common Units | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.07% [1],[2],[8] 0.07% [3],[4],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 4,064  
Ending balance $ 4,353 [1],[2],[8] $ 4,064 [3],[4],[12]
Investment, Identifier [Axis]: Daylight Beta Parent, LLC (Benefytt Technologies, Inc.) | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[7],[8],[18],[23],[24] 0.01% [3],[4],[11],[12],[17],[25],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[17],[25],[26] $ 921  
Ending balance 581 [1],[2],[7],[8],[18],[23],[24],[27] $ 921 [3],[4],[11],[12],[17],[25],[26]
Investment, Identifier [Axis]: Dellner Couplers Group, AB | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[10],[11],[17]   0.02%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[17] $ 1,179  
Ending balance [3],[4],[10],[11],[17]   $ 1,179
Investment, Identifier [Axis]: Denali Bidco, Ltd. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[6],[7],[8],[13],[18] 0.39%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[6],[7],[8],[13],[18] $ 23,179  
Investment, Identifier [Axis]: Denali Bidco, Ltd. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[6],[7],[8],[18] 0.63%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[6],[7],[8],[18] $ 37,164  
Investment, Identifier [Axis]: Denali Bidco, Ltd. 4 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [10],[11],[12],[14],[17]   0.38%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [10],[11],[12],[14],[17] 23,674  
Ending balance [10],[11],[12],[14],[17]   $ 23,674
Investment, Identifier [Axis]: Denali Bidco, Ltd. 5 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [10],[11],[12],[17]   0.58%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [10],[11],[12],[17] 36,508  
Ending balance [10],[11],[12],[17]   $ 36,508
Investment, Identifier [Axis]: Denali Bidco, Ltd. 6 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [10],[11],[12],[17]   0.03%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [10],[11],[12],[17] 1,909  
Ending balance [10],[11],[12],[17]   $ 1,909
Investment, Identifier [Axis]: Denali Bidco, Ltd. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 300 300
Fair Value $ (3) $ (3)
Investment, Identifier [Axis]: Denali Holdco, Ltd. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.28% [1],[2],[6],[7],[8],[18] 0.26% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 16,188  
Ending balance $ 16,440 [1],[2],[6],[7],[8],[18] $ 16,188 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Denali Holdco, Ltd. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.19% [1],[2],[6],[7],[8],[18] 0.17% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 10,737  
Ending balance $ 11,113 [1],[2],[6],[7],[8],[18] $ 10,737 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Denali Intermediate Holdings, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[6],[7] 0.06%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[6],[7] $ 3,297  
Investment, Identifier [Axis]: Denali Intermediate Holdings, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[6],[7],[8],[13] 0.00%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[6],[7],[8],[13] $ 41  
Investment, Identifier [Axis]: Denali Intermediate Holdings, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[10],[11],[12],[14]   0.15%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[10],[11],[12],[14] 9,137  
Ending balance [3],[4],[9],[10],[11],[12],[14]   $ 9,137
Investment, Identifier [Axis]: Denali Intermediate Holdings, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 302 924
Fair Value 0 (9)
Investment, Identifier [Axis]: Denali TopCo, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 4,977 4,977
Fair Value $ (25) $ (25)
Investment, Identifier [Axis]: Denali TopCo, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.28% [1],[2],[5],[7],[8],[13] 0.27% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 16,800  
Ending balance 16,619 [1],[2],[5],[7],[8],[13] $ 16,800 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: Denali TopCo, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 2,389 2,389
Fair Value $ (24) $ (12)
Investment, Identifier [Axis]: Descartes Holdings, Inc. - Class A Common Stock | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[8] 0.00% [3],[4],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 0  
Ending balance $ 0 [1],[2],[8] $ 0 [3],[4],[12]
Investment, Identifier [Axis]: Diligent Corp. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.83% [1],[2],[5],[8] 0.80% [9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [9],[12] $ 49,683  
Ending balance $ 48,441 [1],[2],[5],[8] $ 49,683 [9],[12]
Investment, Identifier [Axis]: Diligent Corp. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.14% [1],[2],[5],[8] 0.14% [9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [9],[12] $ 8,517  
Ending balance $ 8,304 [1],[2],[5],[8] $ 8,517 [9],[12]
Investment, Identifier [Axis]: Discovery Education, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.45% [1],[2],[5],[8] 0.46% [9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [9],[12] $ 28,724  
Ending balance $ 26,734 [1],[2],[5],[8] $ 28,724 [9],[12]
Investment, Identifier [Axis]: Discovery Education, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.03% [1],[2],[5],[7],[8],[13] 0.02% [9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [9],[11],[12],[14] $ 1,478  
Ending balance $ 1,877 [1],[2],[5],[7],[8],[13] $ 1,478 [9],[11],[12],[14]
Investment, Identifier [Axis]: Discovery Education, Inc. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.05% [1],[2],[5],[7],[8] 0.05% [9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [9],[11],[12] $ 3,232  
Ending balance 3,007 [1],[2],[5],[7],[8] $ 3,232 [9],[11],[12]
Investment, Identifier [Axis]: Discovery Education, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 351 987
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Divisions Holding Corp. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.03% [1],[2],[5],[7],[8],[13] 0.03% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 1,605  
Ending balance 1,613 [1],[2],[5],[7],[8],[13] $ 1,605 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: Divisions Holding Corp. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 112 140
Fair Value 0 (1)
Investment, Identifier [Axis]: Doit International, Ltd. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 11,606 11,606
Fair Value $ (87) $ (87)
Investment, Identifier [Axis]: Doit International, Ltd. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.19% [1],[2],[7],[8],[13],[15] 0.18% [11],[12],[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [11],[12],[14],[16] $ 11,432  
Ending balance 11,374 [1],[2],[7],[8],[13],[15] $ 11,432 [11],[12],[14],[16]
Investment, Identifier [Axis]: Doit International, Ltd. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 5,803 5,803
Fair Value $ 0 0
Investment, Identifier [Axis]: Dropbox, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments   44,118
Fair Value   $ (221)
Investment, Identifier [Axis]: Dropbox, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 2.04% [1],[2],[5],[6],[8],[24] 1.25% [9],[10],[12],[14],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [9],[10],[12],[14],[26] $ 77,905  
Ending balance 121,187 [1],[2],[5],[6],[8],[24] $ 77,905 [9],[10],[12],[14],[26]
Investment, Identifier [Axis]: Duro Dyne National Corp. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments   6,002
Fair Value   $ (30)
Investment, Identifier [Axis]: Duro Dyne National Corp. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[12],[14]   0.45%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 28,356  
Ending balance [3],[4],[9],[12],[14]   $ 28,356
Investment, Identifier [Axis]: Duro Dyne National Corp. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments   6,002
Fair Value   $ 0
Investment, Identifier [Axis]: Dwyer Instruments, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.17% [1],[2],[5],[8],[13] 0.15% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 9,676  
Ending balance 10,258 [1],[2],[5],[8],[13] $ 9,676 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: Dwyer Instruments, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 195 823
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: EIS Acquisition Holdings, LP - Class A Common Units | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[8] 0.14%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[8] $ 8,113  
Investment, Identifier [Axis]: EIS Acquisition Holdings, LP - Class A Common Units | | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12]   0.12%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] 7,796  
Ending balance [3],[4],[12]   $ 7,796
Investment, Identifier [Axis]: ELK Bidco, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 3,747 3,747
Fair Value $ (8) $ (9)
Investment, Identifier [Axis]: ELK Bidco, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.30% [1],[2],[7],[8],[13],[19] 0.29% [3],[4],[11],[12],[14],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[20] $ 17,871  
Ending balance 17,827 [1],[2],[7],[8],[13],[19] $ 17,871 [3],[4],[11],[12],[14],[20]
Investment, Identifier [Axis]: ELK Bidco, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 3,373 3,373
Fair Value $ (17) $ (17)
Investment, Identifier [Axis]: EMB Purchaser, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.45% [1],[2],[5],[8] 0.44% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 27,315  
Ending balance $ 26,431 [1],[2],[5],[8] $ 27,315 [3],[4],[9],[12]
Investment, Identifier [Axis]: EMB Purchaser, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.20% [1],[2],[5],[7],[8],[13] 0.16% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 9,715  
Ending balance $ 11,902 [1],[2],[5],[7],[8],[13] $ 9,715 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: EMB Purchaser, Inc. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8],[13] 0.02%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8],[13] $ 1,008  
Investment, Identifier [Axis]: EMB Purchaser, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 4,015 6,681
Fair Value 0 0
Investment, Identifier [Axis]: EMB Purchaser, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 2,196 3,294
Fair Value $ 0 $ (33)
Investment, Identifier [Axis]: ENV Bidco, AB 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.02% [1],[2],[5],[6],[7],[8] 0.02% [3],[4],[9],[10],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[10],[11],[12] $ 1,115  
Ending balance $ 1,107 [1],[2],[5],[6],[7],[8] $ 1,115 [3],[4],[9],[10],[11],[12]
Investment, Identifier [Axis]: ENV Bidco, AB 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.03% [1],[2],[6],[7],[8],[13],[18] 0.03% [3],[4],[10],[11],[12],[14],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[14],[17] $ 1,567  
Ending balance 1,512 [1],[2],[6],[7],[8],[13],[18] $ 1,567 [3],[4],[10],[11],[12],[14],[17]
Investment, Identifier [Axis]: ENV Bidco, AB | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 302 302
Fair Value (4) (4)
Investment, Identifier [Axis]: Eagan Parent, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 90 90
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Eagan Parent, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[5],[7],[8],[13] 0.01% [11],[12],[14],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [11],[12],[14],[20] $ 360  
Ending balance 355 [1],[2],[5],[7],[8],[13] $ 360 [11],[12],[14],[20]
Investment, Identifier [Axis]: Eagan Parent, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 48 48
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Eagle Midstream Canada Finance, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.73% [1],[2],[5],[6],[8] 0.69% [3],[4],[9],[10],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[10],[12] $ 43,141  
Ending balance 43,141 [1],[2],[5],[6],[8] $ 43,141 [3],[4],[9],[10],[12]
Investment, Identifier [Axis]: East River Bidco, GmbH | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 31 31
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: East River Bidco, GmbH | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[6],[8],[13],[18] 0.00% [3],[4],[10],[12],[14],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[12],[14],[17] $ 112  
Ending balance $ 111 [1],[2],[6],[8],[13],[18] $ 112 [3],[4],[10],[12],[14],[17]
Investment, Identifier [Axis]: Eden Acquisitionco, Ltd. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.64% [1],[2],[5],[6],[8],[13] 0.57% [3],[4],[9],[10],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[10],[12],[14] $ 35,898  
Ending balance $ 38,223 [1],[2],[5],[6],[8],[13] $ 35,898 [3],[4],[9],[10],[12],[14]
Investment, Identifier [Axis]: Eden Acquisitionco, Ltd. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.09% [1],[2],[6],[7],[8],[18] 0.09% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 5,521  
Ending balance 5,368 [1],[2],[6],[7],[8],[18] $ 5,521 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Eden Acquisitionco, Ltd. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 11,341 13,505
Fair Value (145) (183)
Investment, Identifier [Axis]: Edison Bidco, AS | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 687 687
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Edison Bidco, AS | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[6],[7],[8],[13],[18] 0.01% [10],[11],[12],[14],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [10],[11],[12],[14],[17] $ 406  
Ending balance $ 280 [1],[2],[6],[7],[8],[13],[18] $ 406 [10],[11],[12],[14],[17]
Investment, Identifier [Axis]: Electro Switch Business Trust, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[8] 0.53%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[8] $ 31,187  
Investment, Identifier [Axis]: Electro Switch Business Trust, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8],[13] 0.01%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8],[13] $ 521  
Investment, Identifier [Axis]: Electro Switch Business Trust, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[12],[14]   0.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] 31,143  
Ending balance [3],[4],[9],[12],[14]   $ 31,143
Investment, Identifier [Axis]: Electro Switch Business Trust, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 3,802 4,345
Fair Value $ 0 $ (43)
Investment, Identifier [Axis]: Elements Finco, Ltd. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.08% [1],[2],[6],[7],[8],[18] 0.08% [10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [10],[11],[12],[17] $ 5,046  
Ending balance $ 4,983 [1],[2],[6],[7],[8],[18] $ 5,046 [10],[11],[12],[17]
Investment, Identifier [Axis]: Elements Finco, Ltd. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.44% [1],[2],[6],[7],[8],[18] 0.43% [10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [10],[11],[12],[17] $ 26,750  
Ending balance $ 26,385 [1],[2],[6],[7],[8],[18] $ 26,750 [10],[11],[12],[17]
Investment, Identifier [Axis]: Elements Finco, Ltd. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.10% [1],[2],[6],[8],[18] 0.10% [10],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [10],[12],[17] $ 6,198  
Ending balance $ 6,190 [1],[2],[6],[8],[18] $ 6,198 [10],[12],[17]
Investment, Identifier [Axis]: Elements Finco, Ltd. 4 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.20% [1],[2],[6],[7],[8],[18] 0.19% [10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [10],[11],[12],[17] $ 11,991  
Ending balance $ 11,828 [1],[2],[6],[7],[8],[18] $ 11,991 [10],[11],[12],[17]
Investment, Identifier [Axis]: Elements Finco, Ltd. 5 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.08% [1],[2],[6],[7],[8],[18] 0.08% [10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [10],[11],[12],[17] $ 4,922  
Ending balance 4,836 [1],[2],[6],[7],[8],[18] $ 4,922 [10],[11],[12],[17]
Investment, Identifier [Axis]: Emergency Power Holdings, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 2,864 2,864
Fair Value $ (4) $ 0
Investment, Identifier [Axis]: Emergency Power Holdings, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 1.01% [1],[2],[8],[13],[15] 0.96% [3],[4],[12],[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[14],[16] $ 60,254  
Ending balance $ 59,934 [1],[2],[8],[13],[15] $ 60,254 [3],[4],[12],[14],[16]
Investment, Identifier [Axis]: Endeavor Schools Holdings, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.32% [1],[2],[8],[15] 0.32% [3],[4],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] $ 20,112  
Ending balance $ 18,930 [1],[2],[8],[15] $ 20,112 [3],[4],[12],[16]
Investment, Identifier [Axis]: Endeavor Schools Holdings, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.06% [1],[2],[7],[8],[13],[15] 0.06% [3],[4],[11],[12],[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[16] $ 3,702  
Ending balance 3,484 [1],[2],[7],[8],[13],[15] $ 3,702 [3],[4],[11],[12],[14],[16]
Investment, Identifier [Axis]: Endeavor Schools Holdings, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 9,765 9,765
Fair Value $ 0 0
Investment, Identifier [Axis]: Essential Services Holding Corp. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[8] 0.19%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[8] $ 11,121  
Investment, Identifier [Axis]: Essential Services Holding Corp. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8],[13] 0.01%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8],[13] $ 553  
Investment, Identifier [Axis]: Essential Services Holding Corp. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments   2,297
Fair Value   $ (11)
Investment, Identifier [Axis]: Essential Services Holding Corp. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[12],[14]   0.19%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] 12,148  
Ending balance [3],[4],[9],[12],[14]   $ 12,148
Investment, Identifier [Axis]: Essential Services Holding Corp. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 804 861
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Everbridge Holdings, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.37% [1],[2],[5],[6],[8] 0.35% [3],[4],[9],[10],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[10],[12] $ 22,000  
Ending balance $ 21,889 [1],[2],[5],[6],[8] $ 22,000 [3],[4],[9],[10],[12]
Investment, Identifier [Axis]: Everbridge Holdings, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.04% [1],[2],[5],[6],[7],[8],[13] 0.03% [3],[4],[9],[10],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[10],[11],[12],[14] $ 2,156  
Ending balance 2,145 [1],[2],[5],[6],[7],[8],[13] $ 2,156 [3],[4],[9],[10],[11],[12],[14]
Investment, Identifier [Axis]: Everbridge Holdings, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 3,378 3,378
Fair Value 0 0
Investment, Identifier [Axis]: Everbridge Holdings, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 2,222 2,222
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Expedition Holdco, LLC - Class A Common Units | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[8] 0.00% [3],[4],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 53  
Ending balance $ 48 [1],[2],[8] $ 53 [3],[4],[12]
Investment, Identifier [Axis]: Expedition Holdco, LLC - Class B Common Units | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[8] 0.00% [3],[4],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 19  
Ending balance $ 14 [1],[2],[8] $ 19 [3],[4],[12]
Investment, Identifier [Axis]: Experity, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.22% [1],[2],[5],[8] 0.20% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 12,227  
Ending balance $ 12,180 [1],[2],[5],[8] $ 12,227 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: Experity, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.07% [1],[2],[5],[7],[8],[13] 0.06% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 3,922  
Ending balance $ 3,902 [1],[2],[5],[7],[8],[13] $ 3,922 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: Experity, Inc. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8],[13] 0.01%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8],[13] $ 789  
Investment, Identifier [Axis]: Experity, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 3,601 4,457
Fair Value 0 (22)
Investment, Identifier [Axis]: Experity, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 1,495 1,495
Fair Value $ (22) 0
Investment, Identifier [Axis]: Falcon Parent Holdings, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[8],[13] 0.46%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[8],[13] $ 27,565  
Investment, Identifier [Axis]: Falcon Parent Holdings, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8],[13] 0.01%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8],[13] $ 667  
Investment, Identifier [Axis]: Falcon Parent Holdings, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 2,169 2,169
Fair Value (16) $ (16)
Investment, Identifier [Axis]: Falcon Parent Holdings, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[12],[14]   0.45%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] 27,963  
Ending balance [3],[4],[9],[12],[14]   $ 27,963
Investment, Identifier [Axis]: Falcon Parent Holdings, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 1,935 2,502
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Falcon Top Parent, LLC - Class A Common Units | | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[8] 0.02% [3],[4],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 773  
Ending balance $ 773 [1],[2],[8] $ 773 [3],[4],[12]
Investment, Identifier [Axis]: Fastener Distribution Holdings, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.51% [1],[2],[5],[8] 0.49% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 30,705  
Ending balance $ 30,550 [1],[2],[5],[8] $ 30,705 [3],[4],[9],[12]
Investment, Identifier [Axis]: Fastener Distribution Holdings, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.07% [1],[2],[5],[8],[13] 0.07% [3],[4],[9],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 4,458  
Ending balance 4,436 [1],[2],[5],[8],[13] $ 4,458 [3],[4],[9],[12],[14]
Investment, Identifier [Axis]: Fastener Distribution Holdings, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 7,125 7,125
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Fencing Supply Group Acquisition, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.86% [1],[2],[8],[15] 0.81% [3],[4],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] $ 50,496  
Ending balance $ 51,297 [1],[2],[8],[15] $ 50,496 [3],[4],[12],[16]
Investment, Identifier [Axis]: Fern Bidco, Ltd. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.45% [1],[2],[6],[7],[8],[18] 0.43% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 26,908  
Ending balance $ 26,613 [1],[2],[6],[7],[8],[18] $ 26,908 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Fern Bidco, Ltd. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.05% [1],[2],[6],[7],[8],[13],[18] 0.04% [3],[4],[10],[11],[12],[14],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[14],[17] $ 2,756  
Ending balance 2,779 [1],[2],[6],[7],[8],[13],[18] $ 2,756 [3],[4],[10],[11],[12],[14],[17]
Investment, Identifier [Axis]: Fern Bidco, Ltd. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 10,035 10,035
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Fidelity Investments Money Market Treasury Portfolio - Class I    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2] 0.01%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2] $ 317  
Investment, Identifier [Axis]: Firmus Supercloud PTY, Ltd. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[6],[7],[8],[13],[15] 0.30%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[6],[7],[8],[13],[15] $ 17,763  
Investment, Identifier [Axis]: Firmus Supercloud Pty Ltd | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 58,732  
Fair Value $ 0  
Investment, Identifier [Axis]: Flexera Software, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.18% [1],[2],[7],[8],[19] 0.18% [3],[4],[11],[12],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[20] $ 11,429  
Ending balance $ 10,779 [1],[2],[7],[8],[19] $ 11,429 [3],[4],[11],[12],[20]
Investment, Identifier [Axis]: Flexera Software, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.54% [1],[2],[8],[13],[19] 0.52% [3],[4],[11],[12],[14],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[20] $ 32,220  
Ending balance 31,253 [1],[2],[8],[13],[19] $ 32,220 [3],[4],[11],[12],[14],[20]
Investment, Identifier [Axis]: Flexera Software, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 2,473 2,473
Fair Value $ (6) $ (6)
Investment, Identifier [Axis]: Foundation Risk Partners Corp. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.24% [1],[2],[5],[8] 0.23% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 14,285  
Ending balance $ 14,210 [1],[2],[5],[8] $ 14,285 [3],[4],[9],[12]
Investment, Identifier [Axis]: Foundation Risk Partners Corp. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.08% [1],[2],[5],[8] 0.08% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 4,735  
Ending balance $ 4,711 [1],[2],[5],[8] $ 4,735 [3],[4],[9],[12]
Investment, Identifier [Axis]: Foundation Risk Partners Corp. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.11% [1],[2],[5],[8] 0.11% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 6,822  
Ending balance $ 6,788 [1],[2],[5],[8] $ 6,822 [3],[4],[9],[12]
Investment, Identifier [Axis]: Foundation Risk Partners Corp. 4 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.10% [1],[2],[5],[7],[8],[13] 0.09% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 5,509  
Ending balance $ 5,932 [1],[2],[5],[7],[8],[13] $ 5,509 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: Foundation Risk Partners Corp. 5 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.08% [1],[2],[5],[7],[8],[13] 0.07% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 4,164  
Ending balance $ 4,975 [1],[2],[5],[7],[8],[13] $ 4,164 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: Foundation Risk Partners Corp. 6 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.03% [1],[2],[5],[7],[8] 0.03% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 2,034  
Ending balance $ 2,024 [1],[2],[5],[7],[8] $ 2,034 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: Foundation Risk Partners Corp. 7 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.02% [1],[2],[5],[7],[8] 0.02% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 951  
Ending balance 946 [1],[2],[5],[7],[8] $ 951 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: Foundation Risk Partners Corp. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 2,142 2,975
Fair Value 0 0
Investment, Identifier [Axis]: Foundation Risk Partners Corp. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 2,691 3,076
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Frontgrade Technologies Holdings, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.04% [1],[2],[5],[7],[8],[13] 0.04% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 2,355  
Ending balance $ 2,387 [1],[2],[5],[7],[8],[13] $ 2,355 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: Frontgrade Technologies Holdings, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[5],[7],[8] 0.01% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 347  
Ending balance $ 344 [1],[2],[5],[7],[8] $ 347 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: Frontgrade Technologies Holdings, Inc. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[5],[7],[8] 0.00% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 90  
Ending balance 89 [1],[2],[5],[7],[8] $ 90 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: Frontgrade Technologies Holdings, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 387 439
Fair Value 0 $ 0
Investment, Identifier [Axis]: Frontline Road Safety, LLC 1 | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12],[17]   0.24%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[17] $ 15,199  
Ending balance [3],[4],[12],[17]   $ 15,199
Investment, Identifier [Axis]: Frontline Road Safety, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[8],[18] 0.25%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[8],[18] $ 15,137  
Investment, Identifier [Axis]: Frontline Road Safety, LLC 2 | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[11],[12],[14],[17]   0.07%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[17] $ 4,446  
Ending balance [3],[4],[11],[12],[14],[17]   $ 4,446
Investment, Identifier [Axis]: Frontline Road Safety, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[7],[8],[13],[18] 0.07%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[7],[8],[13],[18] $ 4,390  
Investment, Identifier [Axis]: Frontline Road Safety, LLC 3 | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[11],[12],[17]   0.08%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[17] $ 4,723  
Ending balance [3],[4],[11],[12],[17]   $ 4,723
Investment, Identifier [Axis]: Frontline Road Safety, LLC 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[7],[8],[18] 0.08%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[7],[8],[18] $ 4,706  
Investment, Identifier [Axis]: Frontline Road Safety, LLC 4 | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[11],[12],[14],[17]   0.03%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[17] $ 2,075  
Ending balance [3],[4],[11],[12],[14],[17]   $ 2,075
Investment, Identifier [Axis]: Frontline Road Safety, LLC 4 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[7],[8],[13],[18] 0.09%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[7],[8],[13],[18] $ 5,272  
Investment, Identifier [Axis]: Frontline Road Safety, LLC 5 | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[11],[12],[17]   0.04%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[17] $ 2,798  
Ending balance [3],[4],[11],[12],[17]   $ 2,798
Investment, Identifier [Axis]: Frontline Road Safety, LLC 5 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[7],[8],[18] 0.05%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[7],[8],[18] $ 2,787  
Investment, Identifier [Axis]: Frontline Road Safety, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 47 3,289
Fair Value 0 0
Investment, Identifier [Axis]: Frontline Road Safety, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 2,565 2,565
Fair Value $ (51) $ (13)
Investment, Identifier [Axis]: FusionSite Midco, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.94% [1],[2],[8],[15] 0.92% [3],[4],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] $ 57,536  
Ending balance $ 55,815 [1],[2],[8],[15] $ 57,536 [3],[4],[12],[16]
Investment, Identifier [Axis]: FusionSite Midco, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.30% [1],[2],[7],[8],[13],[15] 0.30% [3],[4],[11],[12],[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[16] $ 18,534  
Ending balance $ 18,007 [1],[2],[7],[8],[13],[15] $ 18,534 [3],[4],[11],[12],[14],[16]
Investment, Identifier [Axis]: FusionSite Midco, LLC 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[7],[8],[13],[15] 0.05%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[7],[8],[13],[15] $ 2,744  
Investment, Identifier [Axis]: FusionSite Midco, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 5,034 5,034
Fair Value 0 0
Investment, Identifier [Axis]: FusionSite Midco, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 4,087 7,006
Fair Value $ 0 $ (158)
Investment, Identifier [Axis]: G&A Partners Holding Company II, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.56% [1],[2],[5],[8] 0.54% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 33,440  
Ending balance $ 33,272 [1],[2],[5],[8] $ 33,440 [3],[4],[9],[12]
Investment, Identifier [Axis]: G&A Partners Holding Company II, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.34% [1],[2],[5],[8] 0.33% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 20,561  
Ending balance $ 20,458 [1],[2],[5],[8] $ 20,561 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: G&A Partners Holding Company II, LLC 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.08% [1],[2],[5],[7],[8] 0.07% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 4,662  
Ending balance $ 4,704 [1],[2],[5],[7],[8] $ 4,662 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: G&A Partners Holding Company II, LLC 4 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8],[13] 0.01%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8],[13] $ 329  
Investment, Identifier [Axis]: G&A Partners Holding Company II, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments   4,734
Fair Value   0
Investment, Identifier [Axis]: G&A Partners Holding Company II, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 2,959 3,288
Fair Value $ 0 $ (66)
Investment, Identifier [Axis]: GCX Corporation Buyer, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.35% [1],[2],[5],[8] 0.33% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 20,538  
Ending balance $ 20,536 [1],[2],[5],[8] $ 20,538 [3],[4],[9],[12]
Investment, Identifier [Axis]: GCX Corporation Buyer, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.09% [1],[2],[5],[7],[8] 0.08% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 5,202  
Ending balance $ 5,201 [1],[2],[5],[7],[8] $ 5,202 [3],[4],[9],[12]
Investment, Identifier [Axis]: GCX Corporation Group Holdings, L.P. - Class A-2 Units | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[8] 0.00%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[8] $ 183  
Investment, Identifier [Axis]: GCX Corporation Group Holdings, L.P. - Class A-2 Units | | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12]   0.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 243  
Ending balance [3],[4],[12]   $ 243
Investment, Identifier [Axis]: GFT Infrastructure, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[8] 1.07%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[8] $ 63,807  
Investment, Identifier [Axis]: GFT Infrastructure, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8],[13] 0.06%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8],[13] $ 3,711  
Investment, Identifier [Axis]: GFT Infrastructure, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 2,495  
Fair Value $ 0  
Investment, Identifier [Axis]: GGG Midco, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[8],[13] 0.12%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[8],[13] $ 7,152  
Investment, Identifier [Axis]: GGG Midco, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8],[13] 0.01%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8],[13] $ 407  
Investment, Identifier [Axis]: GGG Midco, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 2,554  
Fair Value 0  
Investment, Identifier [Axis]: GGG Midco, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 1,459  
Fair Value $ (15)  
Investment, Identifier [Axis]: GI Ranger Intermediate, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.25% [1],[2],[5],[8],[13] 0.26% [3],[4],[9],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 16,294  
Ending balance 15,111 [1],[2],[5],[8],[13] $ 16,294 [3],[4],[9],[12],[14]
Investment, Identifier [Axis]: GI Ranger Intermediate, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 500 1,040
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: GS Acquisitionco, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.04% [1],[2],[5],[7],[8],[13] 0.03% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 1,668  
Ending balance $ 2,633 [1],[2],[5],[7],[8],[13] $ 1,668 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: GS Acquisitionco, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.08% [1],[2],[7],[8],[15] 0.08% [3],[4],[11],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[16] $ 5,223  
Ending balance 4,657 [1],[2],[7],[8],[15] $ 5,223 [3],[4],[11],[12],[16]
Investment, Identifier [Axis]: GS Acquisitionco, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 1,429  
Fair Value (4)  
Investment, Identifier [Axis]: GS Acquisitionco, Inc. | Delayed Draw Term Loan 1    
Schedule of Investments [Line Items]    
Unfunded commitments   1,653
Fair Value   0
Investment, Identifier [Axis]: GS Acquisitionco, Inc. | Delayed Draw Term Loan 2    
Schedule of Investments [Line Items]    
Unfunded commitments   1,429
Fair Value   (4)
Investment, Identifier [Axis]: GS Acquisitionco, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 1 1,259
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: GTCR Investors, LP - Class A-1 Common Units | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[8] 0.01% [3],[4],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 619  
Ending balance $ 619 [1],[2],[8] $ 619 [3],[4],[12]
Investment, Identifier [Axis]: GTCR/Jupiter Blocker, LLC - Blocker Note | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[8] 0.00% [3],[4],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 6  
Ending balance $ 6 [1],[2],[8] $ 6 [3],[4],[12]
Investment, Identifier [Axis]: GTCR/Jupiter Blocker, LLC - Class Z Units | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[8] 0.00% [3],[4],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 69  
Ending balance $ 72 [1],[2],[8] $ 69 [3],[4],[12]
Investment, Identifier [Axis]: Galileo Pharma Bidco S.p.A | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments   1,162
Fair Value   $ 0
Investment, Identifier [Axis]: Galileo Pharma Bidco S.p.A | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.10% [1],[2],[6],[7],[8],[18] 0.09% [3],[4],[10],[11],[12],[14],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[14],[17] $ 5,745  
Ending balance $ 5,657 [1],[2],[6],[7],[8],[18] $ 5,745 [3],[4],[10],[11],[12],[14],[17]
Investment, Identifier [Axis]: Galway Borrower, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.24% [1],[2],[5],[7],[8] 0.23% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 14,623  
Ending balance $ 14,513 [1],[2],[5],[7],[8] $ 14,623 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: Galway Borrower, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.05% [1],[2],[5],[7],[8],[13] 0.03% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 1,664  
Ending balance $ 2,939 [1],[2],[5],[7],[8],[13] $ 1,664 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: Galway Borrower, LLC 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.22% [1],[2],[5],[7],[8] 0.17% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 10,839  
Ending balance 13,184 [1],[2],[5],[7],[8] $ 10,839 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: Galway Borrower, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments   42,246
Fair Value   0
Investment, Identifier [Axis]: Galway Borrower, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 6,212 7,510
Fair Value 0 $ 0
Investment, Identifier [Axis]: Gannett Fleming, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[12],[14]   1.03%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 64,035  
Ending balance [3],[4],[9],[12],[14]   $ 64,035
Investment, Identifier [Axis]: Gannett Fleming, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments   6,237
Fair Value   $ (94)
Investment, Identifier [Axis]: Gatekeeper Systems, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.70% [1],[2],[5],[8] 0.69% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 42,792  
Ending balance $ 41,700 [1],[2],[5],[8] $ 42,792 [3],[4],[9],[12]
Investment, Identifier [Axis]: Gatekeeper Systems, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.04% [1],[2],[5],[7],[8],[13] 0.05% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 3,069  
Ending balance 2,569 [1],[2],[5],[7],[8],[13] $ 3,069 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: Gatekeeper Systems, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 7,218 7,218
Fair Value 0 0
Investment, Identifier [Axis]: Gatekeeper Systems, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 3,175 3,069
Fair Value $ (151) $ 0
Investment, Identifier [Axis]: Genstar Neptune Blocker, LLC - Blocker Note | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[8] 0.00% [3],[4],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 9  
Ending balance $ 9 [1],[2],[8] $ 9 [3],[4],[12]
Investment, Identifier [Axis]: Genstar Neptune Blocker, LLC - Blocker Units | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[8] 0.01% [3],[4],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 403  
Ending balance $ 418 [1],[2],[8] $ 403 [3],[4],[12]
Investment, Identifier [Axis]: Genstar Neptune Blocker, LLC - Class Z Units | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[8] 0.00% [3],[4],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 96  
Ending balance $ 100 [1],[2],[8] $ 96 [3],[4],[12]
Investment, Identifier [Axis]: Genuine Cable Group, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 2.74% [1],[2],[5],[8] 2.57% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 160,663  
Ending balance 162,692 [1],[2],[5],[8] $ 160,663 [3],[4],[9],[12]
Investment, Identifier [Axis]: Gigamon, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[12]   0.11%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] 6,995  
Ending balance [3],[4],[9],[12]   $ 6,995
Investment, Identifier [Axis]: Gigamon, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[11],[12],[14]   0.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 164  
Ending balance [3],[4],[9],[11],[12],[14]   $ 164
Investment, Identifier [Axis]: Gigamon, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[8],[13] 0.12%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[8],[13] $ 7,166  
Investment, Identifier [Axis]: Gigamon, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 218 262
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Gimlet Bidco, GmbH 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.59% [1],[2],[6],[8],[18] 0.58% [3],[4],[10],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[12],[17] $ 35,985  
Ending balance $ 34,987 [1],[2],[6],[8],[18] $ 35,985 [3],[4],[10],[12],[17]
Investment, Identifier [Axis]: Gimlet Bidco, GmbH 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.24% [1],[2],[6],[8],[18] 0.22% [3],[4],[10],[12],[14],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[12],[14],[17] $ 13,855  
Ending balance $ 14,254 [1],[2],[6],[8],[18] $ 13,855 [3],[4],[10],[12],[14],[17]
Investment, Identifier [Axis]: Gimlet Bidco, GmbH 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[6],[8],[13],[18] 0.21%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[6],[8],[13],[18] $ 12,211  
Investment, Identifier [Axis]: Gimlet Bidco, GmbH | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 23,839  
Fair Value $ 0  
Investment, Identifier [Axis]: Gimlet Bidco, GmbH | Delayed Draw Term Loan 1    
Schedule of Investments [Line Items]    
Unfunded commitments   564
Fair Value   0
Investment, Identifier [Axis]: Gimlet Bidco, GmbH | Delayed Draw Term Loan 2    
Schedule of Investments [Line Items]    
Unfunded commitments   36,015
Fair Value   $ (186)
Investment, Identifier [Axis]: Go Car Wash Management Corp. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.36% [1],[2],[8],[15] 0.34% [3],[4],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] $ 21,494  
Ending balance $ 21,382 [1],[2],[8],[15] $ 21,494 [3],[4],[12],[16]
Investment, Identifier [Axis]: Gorilla Investor, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.41% [1],[2],[5],[8] 0.39% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 24,324  
Ending balance $ 24,129 [1],[2],[5],[8] $ 24,324 [3],[4],[9],[12]
Investment, Identifier [Axis]: Granicus, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.31% [1],[2],[5],[8] 0.28% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 17,733  
Ending balance $ 17,833 [1],[2],[5],[8] $ 17,733 [3],[4],[9],[12]
Investment, Identifier [Axis]: Granicus, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.09% [1],[2],[5],[8],[13] 0.08% [3],[4],[9],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 5,197  
Ending balance $ 5,185 [1],[2],[5],[8],[13] $ 5,197 [3],[4],[9],[12],[14]
Investment, Identifier [Axis]: Granicus, Inc. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8],[13] 0.00%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8],[13] $ 196  
Investment, Identifier [Axis]: Granicus, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 388 388
Fair Value (4) 0
Investment, Identifier [Axis]: Granicus, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 2,252 2,448
Fair Value $ 0 0
Investment, Identifier [Axis]: Grid Alliance Partners, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8],[13] 0.32%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8],[13] $ 18,789  
Investment, Identifier [Axis]: Grid Alliance Partners, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8],[13] 0.01%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8],[13] $ 328  
Investment, Identifier [Axis]: Grid Alliance Partners, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 725 4,585
Fair Value (22) $ (46)
Investment, Identifier [Axis]: Grid Alliance Partners, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[11],[12],[14]   0.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] 15,476  
Ending balance [3],[4],[9],[11],[12],[14]   $ 15,476
Investment, Identifier [Axis]: Grid Alliance Partners, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 2,562 2,979
Fair Value $ 0 $ (30)
Investment, Identifier [Axis]: Griffon Aggregator, Ltd. - LP Interest | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[8] 0.01%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[8] $ 727  
Investment, Identifier [Axis]: Griffon Aggregator, Ltd. - LP Interest | | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12]   0.01%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] 660  
Ending balance [3],[4],[12]   $ 660
Investment, Identifier [Axis]: Griffon Bidco, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 4,072 4,072
Fair Value $ (20) $ 0
Investment, Identifier [Axis]: Griffon Bidco, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.37% [1],[2],[5],[8],[13] 0.36% [3],[4],[9],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 22,333  
Ending balance 22,221 [1],[2],[5],[8],[13] $ 22,333 [3],[4],[9],[12],[14]
Investment, Identifier [Axis]: Griffon Bidco, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 4,072 4,072
Fair Value $ (41) $ (41)
Investment, Identifier [Axis]: Ground Penetrating Radar Systems, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.05% [1],[2],[5],[8] 0.00% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 15  
Ending balance $ 2,929 [1],[2],[5],[8] $ 15 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: Ground Penetrating Radar Systems, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[5],[7],[8],[13] 0.00% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 72  
Ending balance $ 15 [1],[2],[5],[7],[8],[13] $ 72 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: Ground Penetrating Radar Systems, LLC 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8],[13] 0.00%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8],[13] $ 71  
Investment, Identifier [Axis]: Ground Penetrating Radar Systems, LLC 4 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8] 0.01%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8] $ 867  
Investment, Identifier [Axis]: Ground Penetrating Radar Systems, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 497 497
Fair Value 0 $ 0
Investment, Identifier [Axis]: Ground Penetrating Radar Systems, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[11],[12]   0.05%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] 2,944  
Ending balance [3],[4],[9],[11],[12]   $ 2,944
Investment, Identifier [Axis]: Ground Penetrating Radar Systems, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 288 288
Fair Value 0 0
Investment, Identifier [Axis]: Guardian Bidco, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 711 711
Fair Value $ (7) $ (7)
Investment, Identifier [Axis]: Guardian Bidco, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.09% [1],[2],[7],[8],[13],[18] 0.08% [3],[4],[11],[12],[14],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[17] $ 5,246  
Ending balance $ 5,299 [1],[2],[7],[8],[13],[18] $ 5,246 [3],[4],[11],[12],[14],[17]
Investment, Identifier [Axis]: Guidehouse, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 5.10% [1],[2],[5],[8] 5.03% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 314,311  
Ending balance 302,612 [1],[2],[5],[8] $ 314,311 [3],[4],[9],[12]
Investment, Identifier [Axis]: Gusto Sing Bidco Pte, Ltd. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 101 101
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Gusto Sing Bidco Pte, Ltd. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[5],[6],[7],[8],[13] 0.01% [3],[4],[9],[10],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[10],[11],[12],[14] $ 664  
Ending balance $ 689 [1],[2],[5],[6],[7],[8],[13] $ 664 [3],[4],[9],[10],[11],[12],[14]
Investment, Identifier [Axis]: Harp Finco, Ltd. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.32% [1],[2],[6],[7],[8],[18] 0.31% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 19,263  
Ending balance $ 19,051 [1],[2],[6],[7],[8],[18] $ 19,263 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Healthcomp Holding Company, LLC - Preferred Interest | | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[8] 0.00% [3],[4],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 266  
Ending balance $ 20 [1],[2],[8] $ 266 [3],[4],[12]
Investment, Identifier [Axis]: Healthcomp Holding Company, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 1.58% [1],[2],[5],[8] 1.55% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 97,045  
Ending balance $ 93,710 [1],[2],[5],[8] $ 97,045 [3],[4],[9],[12]
Investment, Identifier [Axis]: Healthcomp Holding Company, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.21% [1],[2],[7],[8],[18] 0.20% [3],[4],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[17] $ 12,278  
Ending balance 12,348 [1],[2],[7],[8],[18] $ 12,278 [3],[4],[11],[12],[17]
Investment, Identifier [Axis]: Helix TS, LLC 1 | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[12]   0.54%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 34,026  
Ending balance [3],[4],[9],[12]   $ 34,026
Investment, Identifier [Axis]: Helix TS, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[8],[13] 0.57%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[8],[13] $ 33,827  
Investment, Identifier [Axis]: Helix TS, LLC 2 | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[12]   0.33%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 20,442  
Ending balance [3],[4],[9],[12]   $ 20,442
Investment, Identifier [Axis]: Helix TS, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[8] 0.34%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[8] $ 20,335  
Investment, Identifier [Axis]: Helix TS, LLC 3 | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[11],[12]   0.06%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 3,700  
Ending balance [3],[4],[9],[11],[12]   $ 3,700
Investment, Identifier [Axis]: Helix TS, LLC 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[8] 0.06%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[8] $ 3,681  
Investment, Identifier [Axis]: Helix TS, LLC 4 | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[11],[12]   0.02%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 963  
Ending balance [3],[4],[9],[11],[12]   $ 963
Investment, Identifier [Axis]: Helix TS, LLC 4 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8] 0.02%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8] $ 958  
Investment, Identifier [Axis]: Helix TS, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 5,000  
Fair Value $ (25)  
Investment, Identifier [Axis]: Higginbotham Insurance Agency, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.08% [1],[2],[6],[7],[8],[15] 0.08% [3],[4],[10],[11],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[16] $ 4,925  
Ending balance $ 4,900 [1],[2],[6],[7],[8],[15] $ 4,925 [3],[4],[10],[11],[12],[16]
Investment, Identifier [Axis]: High Street Buyer, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.17% [1],[2],[5],[8] 0.16% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 10,226  
Ending balance $ 10,172 [1],[2],[5],[8] $ 10,226 [3],[4],[9],[12]
Investment, Identifier [Axis]: High Street Buyer, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 1.30% [1],[2],[5],[8],[13] 1.24% [3],[4],[9],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 77,686  
Ending balance $ 77,321 [1],[2],[5],[8],[13] $ 77,686 [3],[4],[9],[12],[14]
Investment, Identifier [Axis]: High Street Buyer, Inc. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.23% [1],[2],[5],[8] 0.22% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 13,499  
Ending balance $ 13,429 [1],[2],[5],[8] $ 13,499 [3],[4],[9],[12]
Investment, Identifier [Axis]: High Street Buyer, Inc. 4 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.07% [1],[2],[5],[7],[8],[13] 0.05% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 2,847  
Ending balance 4,261 [1],[2],[5],[7],[8],[13] $ 2,847 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: High Street Buyer, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 24,141 25,572
Fair Value 0 0
Investment, Identifier [Axis]: High Street Buyer, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 2,254 2,254
Fair Value (45) $ (45)
Investment, Identifier [Axis]: Home Service TopCo IV, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12],[14],[16]   0.59%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[14],[16] 36,912  
Ending balance [3],[4],[12],[14],[16]   $ 36,912
Investment, Identifier [Axis]: Home Service TopCo IV, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12],[14],[16]   0.05%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[14],[16] $ 2,888  
Ending balance [3],[4],[12],[14],[16]   $ 2,888
Investment, Identifier [Axis]: Home Service TopCo IV, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments   3,509
Fair Value   $ (38)
Investment, Identifier [Axis]: Homecare Software Solutions, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.25% [1],[2],[5],[8] 0.24% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 15,096  
Ending balance $ 14,980 [1],[2],[5],[8] $ 15,096 [3],[4],[9],[12]
Investment, Identifier [Axis]: Homecare Software Solutions, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.11% [1],[2],[5],[8] 0.11% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 6,878  
Ending balance $ 6,825 [1],[2],[5],[8] $ 6,878 [3],[4],[9],[12]
Investment, Identifier [Axis]: Homecare Software Solutions, LLC 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.09% [1],[2],[8],[13] 0.09% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 5,607  
Ending balance $ 5,564 [1],[2],[8],[13] $ 5,607 [3],[4],[9],[12]
Investment, Identifier [Axis]: Horizon CTS Buyer, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.02% [1],[2],[5],[7],[8],[13] 0.02% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 1,291  
Ending balance 1,353 [1],[2],[5],[7],[8],[13] $ 1,291 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: Horizon CTS Buyer, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 119 206
Fair Value 0 0
Investment, Identifier [Axis]: IEM New Sub 2, LLC | Delayed Draw Term Loan 1    
Schedule of Investments [Line Items]    
Unfunded commitments 11,010 13,164
Fair Value (28) (99)
Investment, Identifier [Axis]: IEM New Sub 2, LLC | Delayed Draw Term Loan 2    
Schedule of Investments [Line Items]    
Unfunded commitments 13,164 11,010
Fair Value $ (99) $ 0
Investment, Identifier [Axis]: IEM New Sub 2, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 1.90% [1],[2],[8],[13],[19] 1.83% [3],[4],[12],[14],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[14],[20] $ 114,102  
Ending balance $ 112,945 [1],[2],[8],[13],[19] $ 114,102 [3],[4],[12],[14],[20]
Investment, Identifier [Axis]: IG Investments Holdings, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.77% [1],[2],[5],[8],[13] 0.73% [3],[4],[9],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 45,883  
Ending balance 45,652 [1],[2],[5],[8],[13] $ 45,883 [3],[4],[9],[12],[14]
Investment, Identifier [Axis]: IG Investments Holdings, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 4,416 4,416
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: INK BC Bidco S.p.A. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.41% [1],[2],[6],[8],[18] 0.05% [3],[4],[10],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[12],[17] $ 3,248  
Ending balance $ 24,350 [1],[2],[6],[8],[18] $ 3,248 [3],[4],[10],[12],[17]
Investment, Identifier [Axis]: INK BC Bidco S.p.A. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.03% [1],[2],[6],[8],[13],[18] 0.04% [3],[4],[10],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[12],[17] $ 2,555  
Ending balance $ 1,597 [1],[2],[6],[8],[13],[18] $ 2,555 [3],[4],[10],[12],[17]
Investment, Identifier [Axis]: INK BC Bidco S.p.A. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[6],[8],[18] 0.06%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[6],[8],[18] $ 3,327  
Investment, Identifier [Axis]: INK BC Bidco S.p.A. 4 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[6],[8],[18] 0.04%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[6],[8],[18] $ 2,484  
Investment, Identifier [Axis]: INK BC Bidco S.p.A. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 2,483 4,166
Fair Value 0 $ (42)
Investment, Identifier [Axis]: INK BC Bidco S.p.A. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[10],[12],[14],[17]   0.40%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[12],[14],[17] $ 25,003  
Ending balance [3],[4],[10],[12],[14],[17]   $ 25,003
Investment, Identifier [Axis]: IQN Holding Corp. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.08% [1],[2],[5],[8] 0.08% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 4,933  
Ending balance $ 4,873 [1],[2],[5],[8] $ 4,933 [3],[4],[9],[12]
Investment, Identifier [Axis]: IQN Holding Corp. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[5],[8],[13] 0.01% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 384  
Ending balance $ 343 [1],[2],[5],[8],[13] $ 384 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: IQN Holding Corp. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[5],[7],[8] 0.01% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 610  
Ending balance 606 [1],[2],[5],[7],[8] $ 610 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: IQN Holding Corp. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 236 207
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: IRI Group Holdings, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 3.33% [1],[2],[5],[8],[13] 3.16% [3],[4],[9],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 197,537  
Ending balance 197,497 [1],[2],[5],[8],[13] $ 197,537 [3],[4],[9],[12],[14]
Investment, Identifier [Axis]: IRI Group Holdings, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 14,316 14,316
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: ISQ Hawkeye Holdco, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.02% [1],[2],[5],[7],[8],[13] 0.02% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 995  
Ending balance $ 977 [1],[2],[5],[7],[8],[13] $ 995 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: ISQ Hawkeye Holdco, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[5],[7],[8],[13] 0.00% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 37  
Ending balance 36 [1],[2],[5],[7],[8],[13] $ 37 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: ISQ Hawkeye Holdco, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 151 151
Fair Value (1) 0
Investment, Identifier [Axis]: ISQ Hawkeye Holdco, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 54 54
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Icefall Parent, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.68% [1],[2],[8],[13],[15] 0.63% [3],[4],[12],[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[14],[16] $ 39,632  
Ending balance 39,632 [1],[2],[8],[13],[15] $ 39,632 [3],[4],[12],[14],[16]
Investment, Identifier [Axis]: Icefall Parent, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 3,897 3,897
Fair Value 0 0
Investment, Identifier [Axis]: Imagine 360, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 2,413 2,413
Fair Value $ (12) $ (12)
Investment, Identifier [Axis]: Imagine 360, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.28% [1],[2],[5],[8],[13] 0.27% [3],[4],[9],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 16,956  
Ending balance 16,869 [1],[2],[5],[8],[13] $ 16,956 [3],[4],[9],[12],[14]
Investment, Identifier [Axis]: Imagine 360, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 1,514 1,514
Fair Value $ (15) (15)
Investment, Identifier [Axis]: Inception Fertility Ventures, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments   10,488
Fair Value   $ 0
Investment, Identifier [Axis]: Inception Fertility Ventures, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.81% [1],[2],[5],[8],[13] 0.74% [3],[4],[9],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 46,496  
Ending balance 47,845 [1],[2],[5],[8],[13] $ 46,496 [3],[4],[9],[12],[14]
Investment, Identifier [Axis]: Inception Fertility Ventures, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 1,462 728
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Infostretch Corporation | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.07% [1],[2],[5],[7],[8] 0.07% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 4,270  
Ending balance $ 4,248 [1],[2],[5],[7],[8] $ 4,270 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: Inovalon Holdings, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 2.97% [1],[2],[5],[8] 2.96% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 184,968  
Ending balance $ 176,296 [1],[2],[5],[8] $ 184,968 [3],[4],[9],[12]
Investment, Identifier [Axis]: Inovalon Holdings, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.25% [1],[2],[5],[8] 0.25% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 15,685  
Ending balance 14,623 [1],[2],[5],[8] $ 15,685 [3],[4],[9],[12]
Investment, Identifier [Axis]: Integrity Marketing Acquisition, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 9,267 9,278
Fair Value $ (324) $ (16)
Investment, Identifier [Axis]: Integrity Marketing Acquisition, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 2.74% [1],[2],[5],[7],[8],[13] 2.63% [3],[4],[9],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 163,941  
Ending balance 162,632 [1],[2],[5],[7],[8],[13] $ 163,941 [3],[4],[9],[12],[14]
Investment, Identifier [Axis]: Integrity Marketing Acquisition, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 2,791 2,791
Fair Value $ (185) $ (14)
Investment, Identifier [Axis]: Investment Eight    
Schedule of Investments [Line Items]    
Interest rate, floor 3.00% 3.00%
Investment, Identifier [Axis]: Investment Five    
Schedule of Investments [Line Items]    
Interest rate, floor 1.25% 1.25%
Investment, Identifier [Axis]: Investment Four    
Schedule of Investments [Line Items]    
Interest rate, floor 1.00% 1.00%
Investment, Identifier [Axis]: Investment One    
Schedule of Investments [Line Items]    
Interest rate, floor 0.00% 0.00%
Investment, Identifier [Axis]: Investment Seven    
Schedule of Investments [Line Items]    
Interest rate, floor 2.00% 2.00%
Investment, Identifier [Axis]: Investment Six    
Schedule of Investments [Line Items]    
Interest rate, floor 1.50% 1.50%
Investment, Identifier [Axis]: Investment Three    
Schedule of Investments [Line Items]    
Interest rate, floor 0.75% 0.75%
Investment, Identifier [Axis]: Investment Two    
Schedule of Investments [Line Items]    
Interest rate, floor 0.50% 0.50%
Investment, Identifier [Axis]: Iris Buyer, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.42% [1],[2],[8],[15] 0.40% [3],[4],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] $ 25,196  
Ending balance $ 25,067 [1],[2],[8],[15] $ 25,196 [3],[4],[12],[16]
Investment, Identifier [Axis]: Iris Buyer, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.04% [1],[2],[7],[8],[15] 0.04% [3],[4],[11],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[16] $ 2,376  
Ending balance $ 2,363 [1],[2],[7],[8],[15] $ 2,376 [3],[4],[11],[12],[16]
Investment, Identifier [Axis]: Iris Buyer, LLC 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.06% [1],[2],[7],[8],[13],[15] 0.06% [3],[4],[11],[12],[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[16] $ 3,667  
Ending balance $ 3,642 [1],[2],[7],[8],[13],[15] $ 3,667 [3],[4],[11],[12],[14],[16]
Investment, Identifier [Axis]: Iris Buyer, LLC 4 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.02% [1],[2],[7],[8],[15] 0.02% [3],[4],[11],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[16] $ 1,022  
Ending balance 1,014 [1],[2],[7],[8],[15] $ 1,022 [3],[4],[11],[12],[16]
Investment, Identifier [Axis]: Iris Buyer, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 1,650 1,827
Fair Value 0 0
Investment, Identifier [Axis]: Iris Buyer, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 3,850 3,673
Fair Value 0 $ 0
Investment, Identifier [Axis]: Italian Motorway Holdings S.à r.l | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[10],[11],[12],[17]   1.48%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 92,617  
Ending balance [3],[4],[10],[11],[12],[17]   $ 92,617
Investment, Identifier [Axis]: JS Parent, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.59% [1],[2],[5],[8],[13] 0.56% [3],[4],[9],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 35,203  
Ending balance 35,025 [1],[2],[5],[8],[13] $ 35,203 [3],[4],[9],[12],[14]
Investment, Identifier [Axis]: JS Parent, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 3,452 3,452
Fair Value $ (17) $ (17)
Investment, Identifier [Axis]: JSS Holdings, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 4.96% [1],[2],[5],[8] 4.65% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 290,582  
Ending balance $ 294,589 [1],[2],[5],[8] $ 290,582 [3],[4],[9],[12]
Investment, Identifier [Axis]: JSS Holdings, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.09% [1],[2],[5],[7],[8] 0.08% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 5,018  
Ending balance $ 5,088 [1],[2],[5],[7],[8] $ 5,018 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: JSS Holdings, Inc. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.54% [1],[2],[5],[8],[13] 0.51% [3],[4],[9],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 31,921  
Ending balance 32,114 [1],[2],[5],[8],[13] $ 31,921 [3],[4],[9],[12],[14]
Investment, Identifier [Axis]: JSS Holdings, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 7,492 7,492
Fair Value $ (37) $ (37)
Investment, Identifier [Axis]: Jacuzzi Brands, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.18% [1],[2],[5],[7],[8] 0.17% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 10,469  
Ending balance $ 10,979 [1],[2],[5],[7],[8] $ 10,469 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: Jacuzzi Brands, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 1.27% [1],[2],[5],[8] 1.15% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 72,027  
Ending balance $ 75,531 [1],[2],[5],[8] $ 72,027 [3],[4],[9],[12]
Investment, Identifier [Axis]: Java Buyer, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.17% [1],[2],[5],[8] 0.07% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 4,129  
Ending balance $ 9,926 [1],[2],[5],[8] $ 4,129 [3],[4],[9],[12]
Investment, Identifier [Axis]: Java Buyer, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[5],[7],[8],[13] 0.05% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 2,867  
Ending balance $ 844 [1],[2],[5],[7],[8],[13] $ 2,867 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: Java Buyer, Inc. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[5],[7],[8],[13] 0.03% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 1,616  
Ending balance 215 [1],[2],[5],[7],[8],[13] $ 1,616 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: Java Buyer, Inc. 4 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[11],[12],[14]   0.04%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] 2,426  
Ending balance [3],[4],[9],[11],[12],[14]   $ 2,426
Investment, Identifier [Axis]: Java Buyer, Inc. 5 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[11],[12],[14]   0.02%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] 1,493  
Ending balance [3],[4],[9],[11],[12],[14]   $ 1,493
Investment, Identifier [Axis]: Java Buyer, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments   2,173
Fair Value   0
Investment, Identifier [Axis]: Java Buyer, Inc. | Delayed Draw Term Loan 1    
Schedule of Investments [Line Items]    
Unfunded commitments 3,492  
Fair Value 0  
Investment, Identifier [Axis]: Java Buyer, Inc. | Delayed Draw Term Loan 2    
Schedule of Investments [Line Items]    
Unfunded commitments 888  
Fair Value 0  
Investment, Identifier [Axis]: Java Buyer, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 1,713  
Fair Value $ 0  
Investment, Identifier [Axis]: Java Buyer, Inc. | Revolver 1    
Schedule of Investments [Line Items]    
Unfunded commitments   367
Fair Value   0
Investment, Identifier [Axis]: Java Buyer, Inc. | Revolver 2    
Schedule of Investments [Line Items]    
Unfunded commitments   735
Fair Value   $ 0
Investment, Identifier [Axis]: Jayhawk Buyer, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 2.07% [1],[2],[8],[15] 1.97% [3],[4],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] $ 123,186  
Ending balance $ 122,870 [1],[2],[8],[15] $ 123,186 [3],[4],[12],[16]
Investment, Identifier [Axis]: Jayhawk Buyer, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.08% [1],[2],[8],[15] 0.08% [3],[4],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] $ 4,885  
Ending balance $ 4,911 [1],[2],[8],[15] $ 4,885 [3],[4],[12],[16]
Investment, Identifier [Axis]: Jayhawk Holdings, LP - Class A-1 Common Units | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[8] 0.00%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[8] $ 48  
Investment, Identifier [Axis]: Jayhawk Holdings, LP - Class A-1 Common Units | | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12]   0.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 53  
Ending balance [3],[4],[12]   $ 53
Investment, Identifier [Axis]: Jayhawk Holdings, LP - Class A-2 Common Units | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[8] 0.00%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[8] $ 26  
Investment, Identifier [Axis]: Jayhawk Holdings, LP - Class A-2 Common Units | | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12]   0.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 29  
Ending balance [3],[4],[12]   $ 29
Investment, Identifier [Axis]: Jeppesen Holdings, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 1.07% [1],[2],[7],[8],[13],[19] 1.02% [3],[4],[11],[12],[14],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[20] $ 63,901  
Ending balance 63,740 [1],[2],[7],[8],[13],[19] $ 63,901 [3],[4],[11],[12],[14],[20]
Investment, Identifier [Axis]: Jeppesen Holdings, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 3,340 3,340
Fair Value (25) $ (25)
Investment, Identifier [Axis]: Jupiter Purchaser, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 26,467  
Fair Value $ 0  
Investment, Identifier [Axis]: Jupiter Purchaser, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8],[13] 0.02%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8],[13] $ 1,168  
Investment, Identifier [Axis]: Jupiter Ultimate Holdings, LLC - Class A Common Units | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[8] 0.00% [3],[4],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 0  
Ending balance $ 0 [1],[2],[8] $ 0 [3],[4],[12]
Investment, Identifier [Axis]: Jupiter Ultimate Holdings, LLC - Class B Common Units | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[8] 0.00% [3],[4],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 227  
Ending balance $ 235 [1],[2],[8] $ 227 [3],[4],[12]
Investment, Identifier [Axis]: Jupiter Ultimate Holdings, LLC - Class C Common Units | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[8] 0.00% [3],[4],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 289  
Ending balance $ 298 [1],[2],[8] $ 289 [3],[4],[12]
Investment, Identifier [Axis]: KEN Bidco, Ltd. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.16% [1],[2],[5],[6],[7],[8] 0.17% [3],[4],[9],[10],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[10],[11],[12] $ 10,421  
Ending balance $ 9,659 [1],[2],[5],[6],[7],[8] $ 10,421 [3],[4],[9],[10],[11],[12]
Investment, Identifier [Axis]: KKR Alberta Midstream Finance, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.40% [1],[2],[5],[6],[8] 0.38% [3],[4],[9],[10],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[10],[12] $ 23,468  
Ending balance $ 23,468 [1],[2],[5],[6],[8] $ 23,468 [3],[4],[9],[10],[12]
Investment, Identifier [Axis]: KPSKY Acquisition, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.29% [1],[2],[5],[8],[24] 0.28% [3],[4],[9],[12],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[26] $ 17,228  
Ending balance $ 17,286 [1],[2],[5],[8],[24] $ 17,228 [3],[4],[9],[12],[26]
Investment, Identifier [Axis]: KPSKY Acquisition, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.03% [1],[2],[5],[7],[8],[24] 0.03% [3],[4],[9],[11],[12],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[26] $ 1,984  
Ending balance $ 1,991 [1],[2],[5],[7],[8],[24] $ 1,984 [3],[4],[9],[11],[12],[26]
Investment, Identifier [Axis]: Kattegat Project Bidco, AB 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.04% [1],[2],[6],[8],[18] 0.04% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 2,605  
Ending balance $ 2,605 [1],[2],[6],[8],[18] $ 2,605 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Kattegat Project Bidco, AB 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.57% [1],[2],[6],[7],[8],[13],[18] 0.56% [3],[4],[10],[11],[12],[14],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[14],[17] $ 34,947  
Ending balance 33,978 [1],[2],[6],[7],[8],[13],[18] $ 34,947 [3],[4],[10],[11],[12],[14],[17]
Investment, Identifier [Axis]: Kattegat Project Bidco, AB | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 7,030 7,030
Fair Value $ (93) (95)
Investment, Identifier [Axis]: King Bidco S.P.E.C. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[6],[7],[8],[18] 0.00%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[6],[7],[8],[18] $ 196  
Investment, Identifier [Axis]: King Bidco S.P.E.C. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[6],[7],[8],[18] 0.00%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[6],[7],[8],[18] $ 84  
Investment, Identifier [Axis]: King Bidco S.P.E.C. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments   88
Fair Value   $ 0
Investment, Identifier [Axis]: King Bidco S.P.E.C. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[10],[11],[12],[14],[17]   0.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[14],[17] $ 201  
Ending balance [3],[4],[10],[11],[12],[14],[17]   $ 201
Investment, Identifier [Axis]: Knowledge Pro Buyer, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[8],[13] 0.16%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[8],[13] $ 9,758  
Investment, Identifier [Axis]: Knowledge Pro Buyer, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8],[13] 0.01%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8],[13] $ 675  
Investment, Identifier [Axis]: Knowledge Pro Buyer, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 376 741
Fair Value 0 $ 0
Investment, Identifier [Axis]: Knowledge Pro Buyer, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[12],[14]   0.16%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] 9,709  
Ending balance [3],[4],[9],[12],[14]   $ 9,709
Investment, Identifier [Axis]: Knowledge Pro Buyer, Inc. | Revolver 1    
Schedule of Investments [Line Items]    
Unfunded commitments 333 1,032
Fair Value 0 0
Investment, Identifier [Axis]: Knowledge Pro Buyer, Inc. | Revolver 2    
Schedule of Investments [Line Items]    
Unfunded commitments 406 406
Fair Value $ (4) (4)
Investment, Identifier [Axis]: Koala Investment Holdings, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8],[13] 0.02%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8],[13] $ 1,358  
Investment, Identifier [Axis]: Koala Investment Holdings, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8],[13] 0.00%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8],[13] $ 61  
Investment, Identifier [Axis]: Koala Investment Holdings, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 266 266
Fair Value (1) $ (1)
Investment, Identifier [Axis]: Koala Investment Holdings, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[11],[12],[14]   0.02%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] 1,370  
Ending balance [3],[4],[9],[11],[12],[14]   $ 1,370
Investment, Identifier [Axis]: Koala Investment Holdings, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 56 118
Fair Value $ 0 $ (1)
Investment, Identifier [Axis]: Kona Buyer, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[5],[7],[8],[13] 0.00% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 73  
Ending balance $ 75 [1],[2],[5],[7],[8],[13] $ 73 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: Kona Buyer, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.02% [1],[2],[5],[7],[8] 0.02% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 1,029  
Ending balance $ 1,024 [1],[2],[5],[7],[8] $ 1,029 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: Kona Buyer, LLC 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8] 0.00%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8] $ 258  
Investment, Identifier [Axis]: Kona Buyer, LLC 4 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8] 0.00%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8] $ 289  
Investment, Identifier [Axis]: Kona Buyer, LLC 5 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8],[13] 0.00%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8],[13] $ 17  
Investment, Identifier [Axis]: Kona Buyer, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 440  
Fair Value (2)  
Investment, Identifier [Axis]: Kona Buyer, LLC | Delayed Draw Term Loan 1    
Schedule of Investments [Line Items]    
Unfunded commitments   440
Fair Value   (1)
Investment, Identifier [Axis]: Kona Buyer, LLC | Delayed Draw Term Loan 2    
Schedule of Investments [Line Items]    
Unfunded commitments   291
Fair Value   (1)
Investment, Identifier [Axis]: Kona Buyer, LLC | Delayed Draw Term Loan 3    
Schedule of Investments [Line Items]    
Unfunded commitments   260
Fair Value   (1)
Investment, Identifier [Axis]: Kona Buyer, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 149 167
Fair Value $ 0 (1)
Investment, Identifier [Axis]: Kwol Acquisition, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[8],[13] 0.17%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[8],[13] $ 10,157  
Investment, Identifier [Axis]: Kwol Acquisition, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8] 0.06%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8] $ 3,551  
Investment, Identifier [Axis]: Kwol Acquisition, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments   84
Fair Value   $ 0
Investment, Identifier [Axis]: Kwol Acquisition, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[12],[14]   0.16%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] 10,214  
Ending balance [3],[4],[9],[12],[14]   $ 10,214
Investment, Identifier [Axis]: Kwol Acquisition, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 1,659 1,345
Fair Value $ (12) $ 0
Investment, Identifier [Axis]: L&S Mechanical Acquisition, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.21% [1],[2],[5],[8] 0.23% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 14,306  
Ending balance $ 12,599 [1],[2],[5],[8] $ 14,306 [3],[4],[9],[12]
Investment, Identifier [Axis]: LD Lower Holdings, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 1.22% [1],[2],[8],[15] 1.19% [3],[4],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 74,609  
Ending balance $ 72,530 [1],[2],[8],[15] $ 74,609 [3],[4],[12]
Investment, Identifier [Axis]: LPW Group Holdings, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.44% [1],[2],[8],[13],[15] 0.42% [3],[4],[12],[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[14],[16] $ 26,141  
Ending balance 26,325 [1],[2],[8],[13],[15] $ 26,141 [3],[4],[12],[14],[16]
Investment, Identifier [Axis]: LPW Group Holdings, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 5,373 5,373
Fair Value 0 (54)
Investment, Identifier [Axis]: LogicMonitor, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 2,722 2,722
Fair Value $ (17) $ (17)
Investment, Identifier [Axis]: LogicMonitor, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.35% [1],[2],[5],[8],[13] 0.34% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 21,232  
Ending balance 20,858 [1],[2],[5],[8],[13] $ 21,232 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: LogicMonitor, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 1,992 1,992
Fair Value (25) (25)
Investment, Identifier [Axis]: Lsf12 Crown US Commercial Bidco, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 4,345 4,345
Fair Value (20) $ (6)
Investment, Identifier [Axis]: Lytx, Inc. | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12],[16]   1.35%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] $ 84,454  
Ending balance [3],[4],[12],[16]   $ 84,454
Investment, Identifier [Axis]: Lytx, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[8],[15] 1.43%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[8],[15] $ 84,453  
Investment, Identifier [Axis]: MAG DS Corp. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 1.32% [1],[2],[15] 1.26% [3],[4],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[16] $ 78,610  
Ending balance $ 78,163 [1],[2],[15] $ 78,610 [3],[4],[16]
Investment, Identifier [Axis]: MB2 Dental Solutions, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.38% [1],[2],[5],[8] 0.37% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 22,928  
Ending balance $ 22,812 [1],[2],[5],[8] $ 22,928 [3],[4],[9],[12]
Investment, Identifier [Axis]: MB2 Dental Solutions, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.08% [1],[2],[5],[7],[8],[13] 0.07% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 4,519  
Ending balance $ 5,019 [1],[2],[5],[7],[8],[13] $ 4,519 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: MB2 Dental Solutions, LLC 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.06% [1],[2],[5],[7],[8] 0.05% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 3,391  
Ending balance 3,374 [1],[2],[5],[7],[8] $ 3,391 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: MB2 Dental Solutions, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments   3,962
Fair Value   0
Investment, Identifier [Axis]: MB2 Dental Solutions, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 1,175 1,133
Fair Value 0 0
Investment, Identifier [Axis]: MEDX AMCP Holdings, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 1,692 1,701
Fair Value $ (8) $ (9)
Investment, Identifier [Axis]: MEDX AMCP Holdings, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.07% [1],[2],[5],[7],[8],[13] 0.06% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 4,034  
Ending balance 4,034 [1],[2],[5],[7],[8],[13] $ 4,034 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: MEDX AMCP Holdings, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 724 724
Fair Value $ (7) $ (7)
Investment, Identifier [Axis]: MHE Intermediate Holdings, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.03% [1],[2],[7],[8],[13],[15] 0.03% [3],[4],[11],[12],[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[16] $ 1,927  
Ending balance $ 1,987 [1],[2],[7],[8],[13],[15] $ 1,927 [3],[4],[11],[12],[14],[16]
Investment, Identifier [Axis]: MHE Intermediate Holdings, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[7],[8],[15] 0.00% [3],[4],[11],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[16] $ 75  
Ending balance $ 75 [1],[2],[7],[8],[15] $ 75 [3],[4],[11],[12],[16]
Investment, Identifier [Axis]: MHE Intermediate Holdings, LLC 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[7],[8],[15] 0.00% [3],[4],[11],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[16] $ 75  
Ending balance 75 [1],[2],[7],[8],[15] $ 75 [3],[4],[11],[12],[16]
Investment, Identifier [Axis]: MHE Intermediate Holdings, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 107 161
Fair Value 0 0
Investment, Identifier [Axis]: ML Holdco, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 300 300
Fair Value $ (1) $ 0
Investment, Identifier [Axis]: ML Holdco, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.02% [1],[2],[7],[13],[19] 0.02% [3],[4],[11],[12],[14],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[20] $ 1,147  
Ending balance $ 1,152 [1],[2],[7],[13],[19] $ 1,147 [3],[4],[11],[12],[14],[20]
Investment, Identifier [Axis]: MPG Parent Holdings, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.18% [1],[2],[8],[15] 0.17% [3],[4],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] $ 10,762  
Ending balance $ 10,708 [1],[2],[8],[15] $ 10,762 [3],[4],[12],[16]
Investment, Identifier [Axis]: MPG Parent Holdings, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.06% [1],[2],[7],[8],[13],[15] 0.05% [3],[4],[11],[12],[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[16] $ 3,289  
Ending balance 3,634 [1],[2],[7],[8],[13],[15] $ 3,289 [3],[4],[11],[12],[14],[16]
Investment, Identifier [Axis]: MPG Parent Holdings, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 2,076 2,439
Fair Value 0 0
Investment, Identifier [Axis]: MPG Parent Holdings, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 1,339 1,339
Fair Value 0 0
Investment, Identifier [Axis]: MRH Trowe Beteiligungsgesellschaft mbH | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 58 70
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: MRH Trowe Beteiligungsgesellschaft mbH | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[6],[8],[13],[18] 0.01% [3],[4],[10],[12],[14],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[12],[14],[17] $ 474  
Ending balance 464 [1],[2],[6],[8],[13],[18] $ 474 [3],[4],[10],[12],[14],[17]
Investment, Identifier [Axis]: MRH Trowe Beteiligungsgesellschaft mbH | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 35 35
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: MRI Software, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.11% [1],[2],[15] 0.11% [3],[4],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] $ 6,655  
Ending balance $ 6,496 [1],[2],[15] $ 6,655 [3],[4],[12],[16]
Investment, Identifier [Axis]: MRI Software, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 1.48% [1],[2],[8],[15] 1.44% [3],[4],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] $ 89,728  
Ending balance $ 87,577 [1],[2],[8],[15] $ 89,728 [3],[4],[12],[16]
Investment, Identifier [Axis]: MRI Software, LLC 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.03% [1],[2],[7],[8],[13],[15] 0.02% [3],[4],[11],[12],[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[16] $ 1,387  
Ending balance $ 1,649 [1],[2],[7],[8],[13],[15] $ 1,387 [3],[4],[11],[12],[14],[16]
Investment, Identifier [Axis]: MRI Software, LLC 4 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.05% [1],[2],[7],[8],[13],[15] 0.01% [3],[4],[11],[12],[14],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[20] $ 614  
Ending balance 2,728 [1],[2],[7],[8],[13],[15] $ 614 [3],[4],[11],[12],[14],[20]
Investment, Identifier [Axis]: MRI Software, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 2,285 4,501
Fair Value 0 0
Investment, Identifier [Axis]: MRI Software, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 6,033 6,435
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Magic Bidco, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.40% [1],[2],[5],[8] 0.41% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 25,551  
Ending balance $ 23,633 [1],[2],[5],[8] $ 25,551 [3],[4],[9],[12]
Investment, Identifier [Axis]: Magic Bidco, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.06% [1],[2],[5],[7],[8] 0.05% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 3,324  
Ending balance $ 3,435 [1],[2],[5],[7],[8] $ 3,324 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: Magic Bidco, Inc. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.02% [1],[2],[5],[7],[8] 0.02% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 1,251  
Ending balance $ 1,157 [1],[2],[5],[7],[8] $ 1,251 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: Magic Bidco, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments   6,568
Fair Value   0
Investment, Identifier [Axis]: Magic Bidco, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments   371
Fair Value   $ 0
Investment, Identifier [Axis]: Magnesium BorrowerCo, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.09% [1],[2],[5],[8] 0.09% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 5,571  
Ending balance $ 5,542 [1],[2],[5],[8] $ 5,571 [3],[4],[9],[12]
Investment, Identifier [Axis]: Magnesium BorrowerCo, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[5],[7],[8] 0.00% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 139  
Ending balance $ 138 [1],[2],[5],[7],[8] $ 139 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: Magnesium BorrowerCo, Inc. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.07% [1],[2],[5],[7],[8] 0.07% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 4,501  
Ending balance $ 4,407 [1],[2],[5],[7],[8] $ 4,501 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: Magneto Components BuyCo, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.56% [1],[2],[5],[8],[13] 0.53% [3],[4],[9],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 33,308  
Ending balance 33,435 [1],[2],[5],[8],[13] $ 33,308 [3],[4],[9],[12],[14]
Investment, Identifier [Axis]: Magneto Components BuyCo, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 5,508 5,508
Fair Value $ 0 $ (41)
Investment, Identifier [Axis]: Mandolin Technology Holdings, Inc. - Series A Preferred Shares | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.06% [1],[2],[8] 0.08% [3],[4],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 4,122  
Ending balance $ 3,492 [1],[2],[8] $ 4,122 [3],[4],[12]
Investment, Identifier [Axis]: Mandolin Technology Intermediate Holdings, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.12% [1],[2],[7],[8],[19] 0.12% [3],[4],[11],[12],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[20] $ 7,308  
Ending balance $ 7,021 [1],[2],[7],[8],[19] $ 7,308 [3],[4],[11],[12],[20]
Investment, Identifier [Axis]: Mandolin Technology Intermediate Holdings, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.10% [1],[2],[7],[8],[19] 0.10% [3],[4],[11],[12],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[20] $ 6,416  
Ending balance $ 6,111 [1],[2],[7],[8],[19] $ 6,416 [3],[4],[11],[12],[20]
Investment, Identifier [Axis]: Mandolin Technology Intermediate Holdings, Inc. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[7],[8],[13],[18] 0.01% [3],[4],[11],[12],[14],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[17] $ 351  
Ending balance $ 136 [1],[2],[7],[8],[13],[18] $ 351 [3],[4],[11],[12],[14],[17]
Investment, Identifier [Axis]: Mandolin Technology Intermediate Holdings, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.05% [1],[2],[7],[8],[19] 0.05% [3],[4],[11],[12],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[20] $ 3,169  
Ending balance 2,966 [1],[2],[7],[8],[19] $ 3,169 [3],[4],[11],[12],[20]
Investment, Identifier [Axis]: Mandolin Technology Intermediate Holdings, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 1,004 807
Fair Value 0 0
Investment, Identifier [Axis]: MannKind Corp. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 5,435 5,435
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: MannKind Corp. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 2.30% [1],[2],[6],[8],[13],[28] 2.20% [3],[4],[10],[12],[14],[29]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[12],[14],[29] $ 137,455  
Ending balance $ 136,372 [1],[2],[6],[8],[13],[28] $ 137,455 [3],[4],[10],[12],[14],[29]
Investment, Identifier [Axis]: Marcone Yellowstone Buyer, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.07% [1],[2],[5],[7],[8] 0.07% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 4,498  
Ending balance $ 4,342 [1],[2],[5],[7],[8] $ 4,498 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: Marcone Yellowstone Buyer, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.02% [1],[2],[5],[7],[8] 0.02% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 1,446  
Ending balance $ 1,396 [1],[2],[5],[7],[8] $ 1,446 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: Marcone Yellowstone Buyer, Inc. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.02% [1],[2],[5],[7],[8] 0.02% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 1,448  
Ending balance $ 1,406 [1],[2],[5],[7],[8] $ 1,448 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: Material Holdings, LLC 1 | Non-Controlled Affiliated    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.33% [1],[2],[5],[7],[8],[21] 0.35% [3],[4],[9],[11],[12],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[22] $ 22,074  
Ending balance $ 19,823 [1],[2],[5],[7],[8],[21] $ 22,074 [3],[4],[9],[11],[12],[22]
Investment, Identifier [Axis]: Material Holdings, LLC 2 | Non-Controlled Affiliated    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[5],[7],[8],[21],[23] 0.00% [3],[4],[9],[11],[12],[22],[25]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[22],[25] $ 0  
Ending balance $ 0 [1],[2],[5],[7],[8],[21],[23] $ 0 [3],[4],[9],[11],[12],[22],[25]
Investment, Identifier [Axis]: Material Holdings, LLC 3 | Non-Controlled Affiliated    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.03% [1],[2],[5],[7],[8],[13],[21] 0.01% [3],[4],[9],[11],[12],[14],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14],[22] $ 725  
Ending balance 1,665 [1],[2],[5],[7],[8],[13],[21] $ 725 [3],[4],[9],[11],[12],[14],[22]
Investment, Identifier [Axis]: Material Holdings, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 1,242 2,182
Fair Value 0 0
Investment, Identifier [Axis]: Material Holdings, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 353 353
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Material+ Holding Company, LLC - Class A Preferred Units | Non-Controlled Affiliated    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[8],[21] 0.00%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[8],[21] $ 0  
Investment, Identifier [Axis]: Material+ Holding Company, LLC - Class A Units | Non-Controlled Affiliated    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[8],[21] 0.00%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[8],[21] $ 0  
Investment, Identifier [Axis]: Material+ Holding Company, LLC - Class B Preferred Units | Non-Controlled Affiliated    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[8],[21] 0.00%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[8],[21] $ 0  
Investment, Identifier [Axis]: Material+ Holding Company, LLC - Class C Units | Non-Controlled Affiliated    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[8],[21] 0.00%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[8],[21] $ 0  
Investment, Identifier [Axis]: Material+ Holding Company, LLC - Class C Units | Non-Controlled Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12],[22]   0.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[22] $ 0  
Ending balance [3],[4],[12],[22]   $ 0
Investment, Identifier [Axis]: Medallia, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 3.27% [2],[5],[7],[8],[23] 4.90% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 306,100  
Ending balance $ 194,484 [2],[5],[7],[8],[23] $ 306,100 [3],[4],[9],[12]
Investment, Identifier [Axis]: Medallia, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.02% [1],[2],[5],[7],[8],[23] 0.03% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 1,796  
Ending balance $ 1,141 [1],[2],[5],[7],[8],[23] $ 1,796 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: Mercury Bidco Globe, Limited 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 1.22% [1],[2],[6],[7],[8],[18] 1.18% [3],[4],[10],[11],[12],[14],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[14],[17] $ 73,600  
Ending balance $ 72,426 [1],[2],[6],[7],[8],[18] $ 73,600 [3],[4],[10],[11],[12],[14],[17]
Investment, Identifier [Axis]: Mercury Bidco Globe, Limited 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.08% [1],[2],[6],[7],[8],[19] 0.07% [3],[4],[10],[11],[12],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[20] $ 4,520  
Ending balance $ 4,520 [1],[2],[6],[7],[8],[19] $ 4,520 [3],[4],[10],[11],[12],[20]
Investment, Identifier [Axis]: Mercury Bidco Globe, Limited | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments   1,881
Fair Value   $ 0
Investment, Identifier [Axis]: Metrodora S.L. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[6],[7],[8],[18] 0.00% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 106  
Ending balance $ 104 [1],[2],[6],[7],[8],[18] $ 106 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Metrodora S.L. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[6],[7],[8],[18] 0.00% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 43  
Ending balance $ 42 [1],[2],[6],[7],[8],[18] $ 43 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Micross Topco, Inc. - Common Equity | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.13% [1],[2],[8] 0.12% [3],[4],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 7,198  
Ending balance $ 7,878 [1],[2],[8] $ 7,198 [3],[4],[12]
Investment, Identifier [Axis]: Mimecast Limited - LP Interest | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[8] 0.01% [3],[4],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 735  
Ending balance $ 735 [1],[2],[8] $ 735 [3],[4],[12]
Investment, Identifier [Axis]: Minerva Bidco, Ltd. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.11% [1],[2],[6],[7],[8],[18] 0.10% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 6,438  
Ending balance $ 6,335 [1],[2],[6],[7],[8],[18] $ 6,438 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Mode Holdings, LP - Class A-2 Common Units | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[8] 0.03% [3],[4],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 1,646  
Ending balance $ 219 [1],[2],[8] $ 1,646 [3],[4],[12]
Investment, Identifier [Axis]: Mode Purchaser, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 2.08% [1],[2],[8],[15] 2.01% [3],[4],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] $ 125,734  
Ending balance $ 123,662 [1],[2],[8],[15] $ 125,734 [3],[4],[12],[16]
Investment, Identifier [Axis]: Mode Purchaser, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.06% [1],[2],[7],[8],[15] 0.06% [3],[4],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] $ 3,589  
Ending balance $ 3,530 [1],[2],[7],[8],[15] $ 3,589 [3],[4],[12],[16]
Investment, Identifier [Axis]: Modernizing Medicine, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.15% [1],[2],[5],[8],[13] 0.14% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 8,963  
Ending balance 9,064 [1],[2],[5],[8],[13] $ 8,963 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: Modernizing Medicine, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 827 827
Fair Value $ (8) $ (8)
Investment, Identifier [Axis]: Monterey Financing, S.à r.l. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[6],[7],[8],[18] 0.00% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 221  
Ending balance $ 210 [1],[2],[6],[7],[8],[18] $ 221 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Monterey Financing, S.à r.l. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.03% [1],[2],[6],[7],[8],[18] 0.02% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 1,091  
Ending balance $ 1,501 [1],[2],[6],[7],[8],[18] $ 1,091 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Monterey Financing, S.à r.l. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[6],[7],[8],[18] 0.01% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 739  
Ending balance $ 718 [1],[2],[6],[7],[8],[18] $ 739 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Monterey Financing, S.à r.l. 4 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[6],[7],[8],[19] 0.01% [3],[4],[10],[11],[12],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[20] $ 498  
Ending balance 90 [1],[2],[6],[7],[8],[19] $ 498 [3],[4],[10],[11],[12],[20]
Investment, Identifier [Axis]: More Cowbell II, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 871 871
Fair Value $ (11) $ (11)
Investment, Identifier [Axis]: More Cowbell II, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.13% [1],[2],[5],[8],[13] 0.13% [3],[4],[9],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 7,866  
Ending balance 7,826 [1],[2],[5],[8],[13] $ 7,866 [3],[4],[9],[12],[14]
Investment, Identifier [Axis]: More Cowbell II, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 1,177 1,177
Fair Value 0 0
Investment, Identifier [Axis]: NAVEX TopCo, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 10,494 10,494
Fair Value $ (26) $ 0
Investment, Identifier [Axis]: NAVEX TopCo, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 1.38% [1],[2],[5],[8],[13] 1.32% [3],[4],[9],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 82,387  
Ending balance 81,620 [1],[2],[5],[8],[13] $ 82,387 [3],[4],[9],[12],[14]
Investment, Identifier [Axis]: NAVEX TopCo, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 5,910 5,910
Fair Value $ (124) $ (184)
Investment, Identifier [Axis]: NC Ocala Co-Invest Beta, LP - LP Interest | | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.02% [1],[2],[8] 0.06% [3],[4],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 3,168  
Ending balance $ 1,142 [1],[2],[8] $ 3,168 [3],[4],[12]
Investment, Identifier [Axis]: NDC Acquisition Corp. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.25% [1],[2],[8],[13],[15] 0.22% [3],[4],[12],[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[14],[16] $ 13,489  
Ending balance 15,094 [1],[2],[8],[13],[15] $ 13,489 [3],[4],[12],[14],[16]
Investment, Identifier [Axis]: NDC Acquisition Corp. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 1,284 3,083
Fair Value 0 0
Investment, Identifier [Axis]: NDT Global Holding, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 194 194
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: NDT Global Holding, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.02% [1],[2],[6],[7],[8],[13],[19] 0.01% [3],[4],[10],[11],[12],[14],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[14],[20] $ 929  
Ending balance 913 [1],[2],[6],[7],[8],[13],[19] $ 929 [3],[4],[10],[11],[12],[14],[20]
Investment, Identifier [Axis]: NDT Global Holding, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 173 173
Fair Value (2) $ (2)
Investment, Identifier [Axis]: NSI Parent, LP - Class A Common Units | | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12]   0.01%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 526  
Ending balance [3],[4],[12]   $ 526
Investment, Identifier [Axis]: Namecheap, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[8],[13] 0.22%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[8],[13] $ 12,779  
Investment, Identifier [Axis]: Namecheap, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 2,117  
Fair Value (21)  
Investment, Identifier [Axis]: Navigator Acquiror, Inc. | Delayed Draw Term Loan 1    
Schedule of Investments [Line Items]    
Unfunded commitments 7,762 7,762
Fair Value 0 0
Investment, Identifier [Axis]: Navigator Acquiror, Inc. | Delayed Draw Term Loan 2    
Schedule of Investments [Line Items]    
Unfunded commitments 7,762 7,762
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Navigator Acquiror, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 3.45% [1],[2],[8],[13],[19] 3.61% [3],[4],[12],[14],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[14],[20] $ 225,532  
Ending balance $ 204,749 [1],[2],[8],[13],[19] $ 225,532 [3],[4],[12],[14],[20]
Investment, Identifier [Axis]: Ncp Helix Holdings, LLC - Preferred Shares | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[8] 0.01% [3],[4],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 500  
Ending balance 500 [1],[2],[8] $ 500 [3],[4],[12]
Investment, Identifier [Axis]: Nephele III, BV | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 28 25
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Nephele III, BV | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[6],[7],[8],[13],[18] 0.00% [3],[4],[10],[11],[12],[14],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[14],[17] $ 309  
Ending balance $ 304 [1],[2],[6],[7],[8],[13],[18] $ 309 [3],[4],[10],[11],[12],[14],[17]
Investment, Identifier [Axis]: Neptune BidCo, SAS | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments   205
Fair Value   $ 0
Investment, Identifier [Axis]: Neptune BidCo, SAS | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.16% [1],[2],[6],[7],[8],[18] 0.15% [3],[4],[10],[11],[12],[14],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[14],[17] $ 9,661  
Ending balance $ 9,593 [1],[2],[6],[7],[8],[18] $ 9,661 [3],[4],[10],[11],[12],[14],[17]
Investment, Identifier [Axis]: Neptune Holdings, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.11% [1],[2],[5],[8],[13] 0.11% [3],[4],[9],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 6,837  
Ending balance 6,733 [1],[2],[5],[8],[13] $ 6,837 [3],[4],[9],[12],[14]
Investment, Identifier [Axis]: Neptune Holdings, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 933 933
Fair Value (23) (23)
Investment, Identifier [Axis]: Netsmart Technologies, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 3,130 3,130
Fair Value $ (16) $ (16)
Investment, Identifier [Axis]: Netsmart Technologies, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.41% [1],[2],[5],[8],[13] 0.39% [3],[4],[9],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 24,215  
Ending balance 24,082 [1],[2],[5],[8],[13] $ 24,215 [3],[4],[9],[12],[14]
Investment, Identifier [Axis]: Netsmart Technologies, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 4,432 4,432
Fair Value $ (78) $ 0
Investment, Identifier [Axis]: New ACI Buyer, LLC 1 | Non-Controlled Affiliated    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8],[21] 0.38%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8],[21] $ 22,805  
Investment, Identifier [Axis]: New ACI Buyer, LLC 2 | Non-Controlled Affiliated    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8],[21] 0.15%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8],[21] $ 8,750  
Investment, Identifier [Axis]: New ACI Holdings, LLC - Class A Common Units | Non-Controlled Affiliated    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[8],[21] 0.97%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[8],[21] $ 57,191  
Investment, Identifier [Axis]: New ACI Intermediate I, LLC | Non-Controlled Affiliated    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[7],[8],[18],[21] 0.34%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[7],[8],[18],[21] $ 20,271  
Investment, Identifier [Axis]: Nintex Topco, Limited | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.46% [1],[2],[5],[6],[8] 0.49% [3],[4],[10],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[12],[17] $ 30,439  
Ending balance $ 26,708 [1],[2],[5],[6],[8] $ 30,439 [3],[4],[10],[12],[17]
Investment, Identifier [Axis]: Noble Aggregator GP, LLC - GP Units | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[8] 0.00% [3],[4],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 0  
Ending balance $ 0 [1],[2],[8] $ 0 [3],[4],[12]
Investment, Identifier [Axis]: Noble Aggregator, LP - Common Equity Class A Units | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[8] 0.01% [3],[4],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 329  
Ending balance $ 313 [1],[2],[8] $ 329 [3],[4],[12]
Investment, Identifier [Axis]: Noble Midco 3, Ltd. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[6],[7],[8],[13] 0.28%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[6],[7],[8],[13] $ 16,898  
Investment, Identifier [Axis]: Noble Midco 3, Ltd. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[6],[7],[8],[13] 0.01%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[6],[7],[8],[13] $ 388  
Investment, Identifier [Axis]: Noble Midco 3, Ltd. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 3,875 3,875
Fair Value (19) $ (19)
Investment, Identifier [Axis]: Noble Midco 3, Ltd. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[10],[11],[12],[14]   0.27%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[10],[11],[12],[14] 16,966  
Ending balance [3],[4],[9],[10],[11],[12],[14]   $ 16,966
Investment, Identifier [Axis]: Noble Midco 3, Ltd. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 2,196 2,390
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: North Haven Ushc Acquisition, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.04% [1],[2],[8],[13],[15] 0.04% [3],[4],[11],[12],[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[16] $ 2,546  
Ending balance $ 2,424 [1],[2],[8],[13],[15] $ 2,546 [3],[4],[11],[12],[14],[16]
Investment, Identifier [Axis]: North Haven Ushc Acquisition, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.03% [1],[2],[7],[8],[15] 0.03% [3],[4],[11],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[16] $ 2,105  
Ending balance $ 2,018 [1],[2],[7],[8],[15] $ 2,105 [3],[4],[11],[12],[16]
Investment, Identifier [Axis]: North Haven Ushc Acquisition, Inc. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.02% [1],[2],[7],[8],[15] 0.02% [3],[4],[11],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[16] $ 1,233  
Ending balance $ 1,182 [1],[2],[7],[8],[15] $ 1,233 [3],[4],[11],[12],[16]
Investment, Identifier [Axis]: North Haven Ushc Acquisition, Inc. 4 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[7],[8],[15] 0.01% [3],[4],[11],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[16] $ 525  
Ending balance $ 503 [1],[2],[7],[8],[15] $ 525 [3],[4],[11],[12],[16]
Investment, Identifier [Axis]: North Haven Ushc Acquisition, Inc. 5 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[7],[8],[13],[15] 0.01% [3],[4],[11],[12],[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[16] $ 599  
Ending balance $ 730 [1],[2],[7],[8],[13],[15] $ 599 [3],[4],[11],[12],[14],[16]
Investment, Identifier [Axis]: North Haven Ushc Acquisition, Inc. 6 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[7],[8],[15] 0.01% [3],[4],[11],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[16] $ 610  
Ending balance $ 585 [1],[2],[7],[8],[15] $ 610 [3],[4],[11],[12],[16]
Investment, Identifier [Axis]: North Haven Ushc Acquisition, Inc. 7 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.06% [1],[2],[7],[8],[15] 0.06% [3],[4],[11],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[16] $ 3,756  
Ending balance 3,601 [1],[2],[7],[8],[15] $ 3,756 [3],[4],[11],[12],[16]
Investment, Identifier [Axis]: North Haven Ushc Acquisition, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 4,222 4,544
Fair Value 0 0
Investment, Identifier [Axis]: North Haven Ushc Acquisition, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 273 359
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: OHCP V TC COI, LP - LP Interest | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.18% [1],[2],[8] 0.15% [3],[4],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 8,647  
Ending balance $ 10,570 [1],[2],[8] $ 8,647 [3],[4],[12]
Investment, Identifier [Axis]: Octane Purchaser, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[7],[8],[13],[19] 0.04%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[7],[8],[13],[19] $ 2,289  
Investment, Identifier [Axis]: Octane Purchaser, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[7],[8],[19] 0.02%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[7],[8],[19] $ 1,206  
Investment, Identifier [Axis]: Octane Purchaser, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments   1,227
Fair Value   $ 0
Investment, Identifier [Axis]: Octane Purchaser, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[11],[12],[14],[20]   0.04%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[20] 2,329  
Ending balance [3],[4],[11],[12],[14],[20]   $ 2,329
Investment, Identifier [Axis]: Octane Purchaser, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 491 491
Fair Value $ (2) $ (2)
Investment, Identifier [Axis]: Odevo, AB 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[6],[7],[8],[18] 0.00% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 295  
Ending balance $ 287 [1],[2],[6],[7],[8],[18] $ 295 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Odevo, AB 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.05% [1],[2],[6],[7],[8],[18] 0.05% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 2,986  
Ending balance $ 2,938 [1],[2],[6],[7],[8],[18] $ 2,986 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Odevo, AB 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.16% [1],[2],[6],[7],[8],[18] 0.16% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 9,880  
Ending balance $ 9,381 [1],[2],[6],[7],[8],[18] $ 9,880 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Odevo, AB 4 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.48% [1],[2],[6],[8],[18] 0.45% [3],[4],[10],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[12],[17] $ 28,239  
Ending balance $ 28,239 [1],[2],[6],[8],[18] $ 28,239 [3],[4],[10],[12],[17]
Investment, Identifier [Axis]: Odevo, AB 5 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.34% [1],[2],[6],[7],[8],[13],[18] 0.23% [3],[4],[10],[11],[12],[14],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[14],[17] $ 14,307  
Ending balance $ 19,973 [1],[2],[6],[7],[8],[13],[18] $ 14,307 [3],[4],[10],[11],[12],[14],[17]
Investment, Identifier [Axis]: Odevo, AB 6 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.17% [1],[2],[6],[7],[8],[18] 0.17% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 10,329  
Ending balance $ 10,329 [1],[2],[6],[7],[8],[18] $ 10,329 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Odevo, AB 7 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.08% [1],[2],[6],[7],[8],[18] 0.08% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 5,027  
Ending balance $ 4,946 [1],[2],[6],[7],[8],[18] $ 5,027 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Odevo, AB 8 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[6],[7],[8],[18] 0.08%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[6],[7],[8],[18] $ 4,937  
Investment, Identifier [Axis]: Odevo, AB | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 36,872  
Fair Value $ (179)  
Investment, Identifier [Axis]: Odevo, AB | Delayed Draw Term Loan 1    
Schedule of Investments [Line Items]    
Unfunded commitments   5,494
Fair Value   0
Investment, Identifier [Axis]: Odevo, AB | Delayed Draw Term Loan 2    
Schedule of Investments [Line Items]    
Unfunded commitments   41,966
Fair Value   $ (209)
Investment, Identifier [Axis]: Onex Baltimore Buyer, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.18% [1],[2],[5],[8],[24] 0.17% [3],[4],[9],[12],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[26] $ 10,804  
Ending balance $ 10,804 [1],[2],[5],[8],[24] $ 10,804 [3],[4],[9],[12],[26]
Investment, Identifier [Axis]: Onex Baltimore Buyer, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.37% [1],[2],[5],[7],[8],[13],[24] 0.23% [3],[4],[12],[14],[16],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[14],[16],[26] $ 14,591  
Ending balance 22,025 [1],[2],[5],[7],[8],[13],[24] $ 14,591 [3],[4],[12],[14],[16],[26]
Investment, Identifier [Axis]: Onex Baltimore Buyer, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 4,804 4,275
Fair Value 0 $ 0
Investment, Identifier [Axis]: Onward Acquireco, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 6,275  
Fair Value $ (24)  
Investment, Identifier [Axis]: Onward Acquireco, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[8],[13] 0.24%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[8],[13] $ 14,400  
Investment, Identifier [Axis]: Onward Acquireco, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 2,614  
Fair Value $ (20)  
Investment, Identifier [Axis]: Optimizely North America, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.02% [1],[2],[5],[7],[8] 0.02% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 1,122  
Ending balance $ 1,098 [1],[2],[5],[7],[8] $ 1,122 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: Optimizely North America, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.05% [1],[2],[5],[7],[8] 0.05% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 3,261  
Ending balance $ 3,152 [1],[2],[5],[7],[8] $ 3,261 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: Optimizely North America, Inc. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.13% [1],[2],[5],[7],[8],[13] 0.13% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 7,896  
Ending balance 7,849 [1],[2],[5],[7],[8],[13] $ 7,896 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: Optimizely North America, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 1,218 1,218
Fair Value $ (12) $ (12)
Investment, Identifier [Axis]: Other Cash and Cash Equivalents    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 4.38% [1],[2] 4.20% [3],[4]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4] $ 262,463  
Ending balance $ 260,246 [1],[2] $ 262,463 [3],[4]
Investment, Identifier [Axis]: Oxford Global Resources, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.31% [1],[2],[8],[15] 0.30% [3],[4],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] $ 18,580  
Ending balance $ 18,483 [1],[2],[8],[15] $ 18,580 [3],[4],[12],[16]
Investment, Identifier [Axis]: Oxford Global Resources, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.05% [1],[2],[8],[13],[15] 0.05% [3],[4],[12],[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[14],[16] $ 2,880  
Ending balance $ 2,865 [1],[2],[8],[13],[15] $ 2,880 [3],[4],[12],[14],[16]
Investment, Identifier [Axis]: Oxford Global Resources, Inc. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.04% [1],[2],[8],[15] 0.04% [3],[4],[12],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[20] $ 2,194  
Ending balance 2,183 [1],[2],[8],[15] $ 2,194 [3],[4],[12],[20]
Investment, Identifier [Axis]: Oxford Global Resources, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 3,085 3,085
Fair Value 0 0
Investment, Identifier [Axis]: PAS Parent, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 705 705
Fair Value $ (4) $ (4)
Investment, Identifier [Axis]: PAS Parent, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[5],[7],[8],[13] 0.01% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 454  
Ending balance 456 [1],[2],[5],[7],[8],[13] $ 454 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: PAS Parent, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 328 328
Fair Value $ (3) $ (3)
Investment, Identifier [Axis]: PDI TA Holdings, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.75% [1],[2],[5],[8] 0.76% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 47,301  
Ending balance $ 44,278 [1],[2],[5],[8] $ 47,301 [3],[4],[9],[12]
Investment, Identifier [Axis]: PDI TA Holdings, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.06% [1],[2],[5],[7],[8] 0.04% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 2,787  
Ending balance 3,553 [1],[2],[5],[7],[8] $ 2,787 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: PDI TA Holdings, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments   1,013
Fair Value   0
Investment, Identifier [Axis]: PKF O'Connor Davies Advisory, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 369 389
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: PKF O'Connor Davies Advisory, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.02% [1],[2],[5],[7],[8],[13] 0.02% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 1,155  
Ending balance 1,169 [1],[2],[5],[7],[8],[13] $ 1,155 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: PKF O'Connor Davies Advisory, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 141 141
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: PPV Intermediate Holdings, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.03% [1],[2],[5],[8] 0.03% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 1,957  
Ending balance $ 1,909 [1],[2],[5],[8] $ 1,957 [3],[4],[9],[12]
Investment, Identifier [Axis]: PPV Intermediate Holdings, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[5],[7],[8],[13] 0.00% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 215  
Ending balance 238 [1],[2],[5],[7],[8],[13] $ 215 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: PPV Intermediate Holdings, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 187 187
Fair Value 0 0
Investment, Identifier [Axis]: PPV Intermediate Holdings, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 103 139
Fair Value $ 0 0
Investment, Identifier [Axis]: PT Intermediate Holdings III, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments   3,688
Fair Value   $ 0
Investment, Identifier [Axis]: PT Intermediate Holdings III, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 1.07% [1],[2],[5],[8] 1.01% [3],[4],[9],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 63,193  
Ending balance $ 63,469 [1],[2],[5],[8] $ 63,193 [3],[4],[9],[12],[14]
Investment, Identifier [Axis]: Paisley Bidco, Ltd. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.13% [1],[2],[6],[7],[8],[13],[18] 0.13% [3],[4],[10],[11],[12],[14],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[14],[17] $ 8,408  
Ending balance $ 7,816 [1],[2],[6],[7],[8],[13],[18] $ 8,408 [3],[4],[10],[11],[12],[14],[17]
Investment, Identifier [Axis]: Paisley Bidco, Ltd. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.06% [1],[2],[6],[7],[8],[18] 0.06% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 3,888  
Ending balance $ 3,572 [1],[2],[6],[7],[8],[18] $ 3,888 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Paisley Bidco, Ltd. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.05% [1],[2],[6],[7],[8],[18] 0.05% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 3,430  
Ending balance $ 3,151 [1],[2],[6],[7],[8],[18] $ 3,430 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Paisley Bidco, Ltd. 4 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.05% [1],[2],[6],[7],[8],[18] 0.05% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 3,326  
Ending balance 3,055 [1],[2],[6],[7],[8],[18] $ 3,326 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Paisley Bidco, Ltd. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 906 906
Fair Value (3) $ (3)
Investment, Identifier [Axis]: Paramount Global Surfaces, Inc. | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12],[16]   0.66%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] $ 41,393  
Ending balance [3],[4],[12],[16]   $ 41,393
Investment, Identifier [Axis]: Paramount Global Surfaces, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[8],[15],[23] 0.53%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[8],[15],[23] $ 30,786  
Investment, Identifier [Axis]: Patriot Growth Insurance Services, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.07% [1],[2],[5],[7],[8] 0.07% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 4,498  
Ending balance $ 4,340 [1],[2],[5],[7],[8] $ 4,498 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: Patriot Growth Insurance Services, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.07% [1],[2],[5],[7],[8],[13] 0.07% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 4,214  
Ending balance 4,194 [1],[2],[5],[7],[8],[13] $ 4,214 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: Patriot Growth Insurance Services, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 469 469
Fair Value $ (9) $ (9)
Investment, Identifier [Axis]: Pave America Holding, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.29% [1],[2],[5],[8],[13] 0.23% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 14,277  
Ending balance $ 16,975 [1],[2],[5],[8],[13] $ 14,277 [3],[4],[9],[12]
Investment, Identifier [Axis]: Pave America Holding, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.03% [1],[2],[5],[7],[8],[13] 0.04% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 2,529  
Ending balance 1,858 [1],[2],[5],[7],[8],[13] $ 2,529 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: Pave America Holding, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 2,477 3,493
Fair Value 0 0
Investment, Identifier [Axis]: Pave America Holding, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 1,858 2,601
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Pavion Corp. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 1.26% [1],[2],[5],[8] 1.20% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 75,024  
Ending balance $ 75,024 [1],[2],[5],[8] $ 75,024 [3],[4],[9],[12]
Investment, Identifier [Axis]: Pavion Corp. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.27% [1],[2],[5],[8] 0.25% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 15,819  
Ending balance $ 15,819 [1],[2],[5],[8] $ 15,819 [3],[4],[9],[12]
Investment, Identifier [Axis]: Perseus Bidco US, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.17% [1],[2],[6],[7],[8],[18] 0.16% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 10,276  
Ending balance $ 10,276 [1],[2],[6],[7],[8],[18] $ 10,276 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Petrus Buyer, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.04% [1],[2],[5],[8] 0.04% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 2,442  
Ending balance $ 2,430 [1],[2],[5],[8] $ 2,442 [3],[4],[9],[12]
Investment, Identifier [Axis]: Petrus Buyer, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[5],[7],[8] 0.01% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 642  
Ending balance $ 639 [1],[2],[5],[7],[8] $ 642 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: Petrus Buyer, Inc. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8],[13] 0.00%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8],[13] $ 194  
Investment, Identifier [Axis]: Petrus Buyer, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 78 272
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Phoenix 1 Buyer Corp. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.43% [1],[2],[5],[8],[13] 0.41% [3],[4],[9],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 25,429  
Ending balance 25,365 [1],[2],[5],[8],[13] $ 25,429 [3],[4],[9],[12],[14]
Investment, Identifier [Axis]: Phoenix 1 Buyer Corp. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 5,009 5,009
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Point Broadband Holdings, LLC - Class A Common Units | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[8] 0.13%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[8] $ 7,773  
Investment, Identifier [Axis]: Point Broadband Holdings, LLC - Class A Common Units | | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12]   0.13%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 7,553  
Ending balance [3],[4],[12]   $ 7,553
Investment, Identifier [Axis]: Point Broadband Holdings, LLC - Class Additional A Common Units | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[8] 0.03%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[8] $ 1,670  
Investment, Identifier [Axis]: Point Broadband Holdings, LLC - Class Additional A Common Units | | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12]   0.03%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 1,623  
Ending balance [3],[4],[12]   $ 1,623
Investment, Identifier [Axis]: Point Broadband Holdings, LLC - Class Additional B Common Units | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[8] 0.00%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[8] $ 206  
Investment, Identifier [Axis]: Point Broadband Holdings, LLC - Class Additional B Common Units | | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12]   0.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 257  
Ending balance [3],[4],[12]   $ 257
Investment, Identifier [Axis]: Point Broadband Holdings, LLC - Class B Common Units | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[8] 0.02%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[8] $ 960  
Investment, Identifier [Axis]: Point Broadband Holdings, LLC - Class B Common Units | | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12]   0.02%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 1,196  
Ending balance [3],[4],[12]   $ 1,196
Investment, Identifier [Axis]: Profile Products, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.12% [1],[2],[5],[8] 0.11% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 7,072  
Ending balance $ 7,053 [1],[2],[5],[8] $ 7,072 [3],[4],[9],[12]
Investment, Identifier [Axis]: Profile Products, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[5],[7],[8],[13] 0.01% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 336  
Ending balance $ 170 [1],[2],[5],[7],[8],[13] $ 336 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: Profile Products, LLC 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8],[13] 0.00%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8],[13] $ 135  
Investment, Identifier [Axis]: Profile Products, LLC | Revolver 1    
Schedule of Investments [Line Items]    
Unfunded commitments 235 373
Fair Value 0 (4)
Investment, Identifier [Axis]: Profile Products, LLC | Revolver 2    
Schedule of Investments [Line Items]    
Unfunded commitments 347 176
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Progress Residential PM Holdings, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 1.22% [1],[2],[8],[18] 1.17% [3],[4],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[17] $ 72,923  
Ending balance 72,739 [1],[2],[8],[18] $ 72,923 [3],[4],[12],[17]
Investment, Identifier [Axis]: Project Ruby Ultimate Parent Corp. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[17]   0.13%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[17] 8,280  
Ending balance [3],[4],[17]   $ 8,280
Investment, Identifier [Axis]: Project Ruby Ultimate Parent Corp. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[11],[12]   0.02%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 998  
Ending balance [3],[4],[9],[11],[12]   $ 998
Investment, Identifier [Axis]: Project Ruby Ultimate Parent Corp. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8] 0.02%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8] $ 995  
Investment, Identifier [Axis]: QBS Parent, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8],[13] 0.22%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8],[13] $ 13,195  
Investment, Identifier [Axis]: QBS Parent, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8],[13] 0.00%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8],[13] $ 164  
Investment, Identifier [Axis]: QBS Parent, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 3,264 3,472
Fair Value 0 $ 0
Investment, Identifier [Axis]: QBS Parent, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[11],[12],[14]   0.22%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] 13,619  
Ending balance [3],[4],[9],[11],[12],[14]   $ 13,619
Investment, Identifier [Axis]: QBS Parent, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 1,908 1,734
Fair Value (16) $ 0
Investment, Identifier [Axis]: Qualus Power Services Corp. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12],[16]   0.52%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] 32,436  
Ending balance [3],[4],[12],[16]   $ 32,436
Investment, Identifier [Axis]: Qualus Power Services Corp. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12],[16]   0.56%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] 35,077  
Ending balance [3],[4],[12],[16]   $ 35,077
Investment, Identifier [Axis]: Qualus Power Services Corp. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12],[16]   1.32%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] 82,455  
Ending balance [3],[4],[12],[16]   $ 82,455
Investment, Identifier [Axis]: Qualus Power Services Corp. 4 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[11],[12],[16]   0.54%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[16] $ 33,718  
Ending balance [3],[4],[11],[12],[16]   $ 33,718
Investment, Identifier [Axis]: R1 Holdings, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.02% [1],[2],[7],[8],[13],[15] 0.02% [3],[4],[11],[12],[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[16] $ 1,260  
Ending balance 1,221 [1],[2],[7],[8],[13],[15] $ 1,260 [3],[4],[11],[12],[14],[16]
Investment, Identifier [Axis]: R1 Holdings, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 31 31
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: RC VI Buckeye Holdings, LLC - LLC Units | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[8] 0.00% [3],[4],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 187  
Ending balance $ 176 [1],[2],[8] $ 187 [3],[4],[12]
Investment, Identifier [Axis]: RWL Holdings, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[8] 0.48%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[8] $ 28,668  
Investment, Identifier [Axis]: RWL Holdings, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8] 0.02%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8] $ 1,318  
Investment, Identifier [Axis]: RWL Holdings, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[12]   0.44%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 27,628  
Ending balance [3],[4],[9],[12]   $ 27,628
Investment, Identifier [Axis]: RailPros Parent, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8],[13] 0.01%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8],[13] $ 399  
Investment, Identifier [Axis]: RailPros Parent, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8],[13] 0.00%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8],[13] $ 37  
Investment, Identifier [Axis]: RailPros Parent, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 87 124
Fair Value 0 $ (1)
Investment, Identifier [Axis]: RailPros Parent, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[11],[12],[14]   0.01%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] 398  
Ending balance [3],[4],[9],[11],[12],[14]   $ 398
Investment, Identifier [Axis]: RailPros Parent, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 62 62
Fair Value $ (1) $ (1)
Investment, Identifier [Axis]: Rally Buyer, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[5],[7],[8] 0.01% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 815  
Ending balance $ 799 [1],[2],[5],[7],[8] $ 815 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: Rally Buyer, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[5],[7],[8],[13] 0.00% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 54  
Ending balance 79 [1],[2],[5],[7],[8],[13] $ 54 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: Rally Buyer, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 17 46
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Razor Holdco, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.31% [1],[2],[5],[8] 0.30% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 18,885  
Ending balance 18,272 [1],[2],[5],[8] $ 18,885 [3],[4],[9],[12]
Investment, Identifier [Axis]: Red Fox CD Acquisition Corp. 1 | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12],[16]   1.17%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] $ 73,267  
Ending balance [3],[4],[12],[16]   $ 73,267
Investment, Identifier [Axis]: Red Fox CD Acquisition Corp. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[8],[15] 1.22%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[8],[15] $ 72,348  
Investment, Identifier [Axis]: Red Fox CD Acquisition Corp. 2 | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[11],[12],[14],[16]   0.19%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[16] $ 11,583  
Ending balance [3],[4],[11],[12],[14],[16]   $ 11,583
Investment, Identifier [Axis]: Red Fox CD Acquisition Corp. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[7],[8],[13],[15] 0.44%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[7],[8],[13],[15] $ 26,050  
Investment, Identifier [Axis]: Red Fox CD Acquisition Corp. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 1,463 16,235
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Red Griffin ParentCo, LLC - Class A Common Units | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[8] 0.02% [3],[4],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 1,071  
Ending balance $ 689 [1],[2],[8] $ 1,071 [3],[4],[12]
Investment, Identifier [Axis]: Red Pathway Bidco, AB 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.09% [1],[2],[6],[7],[8],[18] 0.09% [3],[4],[10],[11],[12],[14],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[14],[17] $ 5,844  
Ending balance $ 5,598 [1],[2],[6],[7],[8],[18] $ 5,844 [3],[4],[10],[11],[12],[14],[17]
Investment, Identifier [Axis]: Red Pathway Bidco, AB 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.05% [1],[2],[6],[7],[8],[18] 0.04% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 2,649  
Ending balance $ 2,698 [1],[2],[6],[7],[8],[18] $ 2,649 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Red Pathway Bidco, AB 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.03% [1],[2],[6],[7],[8],[18] 0.03% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 1,882  
Ending balance $ 1,828 [1],[2],[6],[7],[8],[18] $ 1,882 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Red Pathway Bidco, AB 4 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.07% [1],[2],[6],[7],[8],[18] 0.07% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 4,234  
Ending balance $ 4,116 [1],[2],[6],[7],[8],[18] $ 4,234 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Red Pathway Bidco, AB 5 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[6],[7],[8],[13],[18] 0.04%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[6],[7],[8],[13],[18] $ 2,655  
Investment, Identifier [Axis]: Red Pathway Bidco, AB | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 3,962 6,793
Fair Value $ 0 $ (52)
Investment, Identifier [Axis]: Red River Technology, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 1.18% [1],[2],[7],[8],[15] 1.18% [3],[4],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] $ 73,436  
Ending balance $ 70,325 [1],[2],[7],[8],[15] $ 73,436 [3],[4],[12],[16]
Investment, Identifier [Axis]: Red River Technology, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.13% [1],[2],[7],[8],[15] 0.13% [3],[4],[11],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[16] $ 8,228  
Ending balance $ 7,881 [1],[2],[7],[8],[15] $ 8,228 [3],[4],[11],[12],[16]
Investment, Identifier [Axis]: Redwood Services Group, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 1.28% [1],[2],[5],[8] 1.22% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 76,375  
Ending balance $ 75,897 [1],[2],[5],[8] $ 76,375 [3],[4],[9],[12]
Investment, Identifier [Axis]: Redwood Services Group, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 1.73% [1],[2],[5],[8] 1.58% [3],[4],[9],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 98,566  
Ending balance $ 102,707 [1],[2],[5],[8] $ 98,566 [3],[4],[9],[12],[14]
Investment, Identifier [Axis]: Redwood Services Group, LLC 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8],[13] 0.07%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8],[13] $ 3,919  
Investment, Identifier [Axis]: Redwood Services Group, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 20,894 4,608
Fair Value 0 $ 0
Investment, Identifier [Axis]: Relativity ODA, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12],[14],[16]   0.31%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[14],[16] 19,257  
Ending balance [3],[4],[12],[14],[16]   $ 19,257
Investment, Identifier [Axis]: Relativity ODA, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments   2,966
Fair Value   $ (74)
Investment, Identifier [Axis]: Roadsafe Holdings, Inc. 1 | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12],[16]   0.51%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] $ 31,588  
Ending balance [3],[4],[12],[16]   $ 31,588
Investment, Identifier [Axis]: Roadsafe Holdings, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[8],[15] 0.40%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[8],[15] $ 24,008  
Investment, Identifier [Axis]: Roadsafe Holdings, Inc. 2 | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12],[16]   0.31%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] $ 19,465  
Ending balance [3],[4],[12],[16]   $ 19,465
Investment, Identifier [Axis]: Roadsafe Holdings, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[8],[15] 0.25%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[8],[15] $ 14,796  
Investment, Identifier [Axis]: Roadsafe Holdings, Inc. 3 | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12],[16]   0.06%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] $ 3,969  
Ending balance [3],[4],[12],[16]   $ 3,969
Investment, Identifier [Axis]: Roadsafe Holdings, Inc. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[8],[15] 0.05%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[8],[15] $ 3,017  
Investment, Identifier [Axis]: Roadsafe Holdings, Inc. 4 | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[11],[12],[16]   0.02%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[16] $ 1,179  
Ending balance [3],[4],[11],[12],[16]   $ 1,179
Investment, Identifier [Axis]: Roadsafe Holdings, Inc. 4 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[7],[8],[15] 0.02%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[7],[8],[15] $ 896  
Investment, Identifier [Axis]: Rocky MRA Acquisition Corp. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.16% [1],[2],[19] 0.15% [3],[4],[12],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[20] $ 9,379  
Ending balance 9,331 [1],[2],[19] $ 9,379 [3],[4],[12],[20]
Investment, Identifier [Axis]: SAFEbuilt, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 3,378  
Fair Value $ (17)  
Investment, Identifier [Axis]: SAFEbuilt, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[8],[13] 0.34%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[8],[13] $ 20,122  
Investment, Identifier [Axis]: SAFEbuilt, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 1,267  
Fair Value $ (13)  
Investment, Identifier [Axis]: SEKO Global Logistics Network, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.04% [1],[2],[7],[8],[15] 0.03% [3],[4],[11],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[16] $ 2,097  
Ending balance $ 2,212 [1],[2],[7],[8],[15] $ 2,097 [3],[4],[11],[12],[16]
Investment, Identifier [Axis]: SEKO Global Logistics Network, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[7],[8],[15] 0.01% [3],[4],[11],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[16] $ 697  
Ending balance $ 746 [1],[2],[7],[8],[15] $ 697 [3],[4],[11],[12],[16]
Investment, Identifier [Axis]: SEKO Global Logistics Network, LLC 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[7],[8],[15] 0.00% [3],[4],[11],[12],[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[16] $ 162  
Ending balance $ 171 [1],[2],[7],[8],[15] $ 162 [3],[4],[11],[12],[14],[16]
Investment, Identifier [Axis]: SEKO Global Logistics Network, LLC 4 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[7],[8],[13],[15] 0.00%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[7],[8],[13],[15] $ 71  
Investment, Identifier [Axis]: SEKO Global Logistics Network, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 20 91
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: SG Acquisition, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 2.05% [1],[2],[5],[8],[13] 2.02% [3],[4],[9],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 126,384  
Ending balance 121,957 [1],[2],[5],[8],[13] $ 126,384 [3],[4],[9],[12],[14]
Investment, Identifier [Axis]: SG Acquisition, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 8,301 8,301
Fair Value 0 0
Investment, Identifier [Axis]: SI Swan UK Bidco, Ltd. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 8,241  
Fair Value $ 0  
Investment, Identifier [Axis]: SI Swan UK Bidco, Ltd. | Delayed Draw Term Loan 1    
Schedule of Investments [Line Items]    
Unfunded commitments   7,142
Fair Value   0
Investment, Identifier [Axis]: SI Swan UK Bidco, Ltd. | Delayed Draw Term Loan 2    
Schedule of Investments [Line Items]    
Unfunded commitments   8,241
Fair Value   $ 0
Investment, Identifier [Axis]: SI Swan UK Bidco, Ltd. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.80% [1],[2],[6],[7],[8],[13],[18] 0.76% [3],[4],[10],[11],[12],[14],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[14],[17] $ 47,262  
Ending balance $ 46,786 [1],[2],[6],[7],[8],[13],[18] $ 47,262 [3],[4],[10],[11],[12],[14],[17]
Investment, Identifier [Axis]: SIQ Holdings III Corp. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.25% [1],[2],[5],[7],[8] 0.24% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 14,850  
Ending balance $ 14,738 [1],[2],[5],[7],[8] $ 14,850 [3],[4],[9],[12]
Investment, Identifier [Axis]: SIQ Holdings III Corp. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.05% [1],[2],[5],[7],[8],[13] 0.00% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 160  
Ending balance 2,860 [1],[2],[5],[7],[8],[13] $ 160 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: SIQ Holdings III Corp. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 3,667 6,667
Fair Value 0 0
Investment, Identifier [Axis]: SIQ Holdings III Corp. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 3,333 3,107
Fair Value $ (42) $ 0
Investment, Identifier [Axis]: SQ ABS Issuer, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.07% [1],[2],[6],[7],[8],[18] 0.08% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 4,752  
Ending balance $ 4,107 [1],[2],[6],[7],[8],[18] $ 4,752 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: SQ ABS Issuer, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.05% [1],[2],[6],[7],[8],[18] 0.05% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 3,152  
Ending balance $ 2,731 [1],[2],[6],[7],[8],[18] $ 3,152 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: STV Group, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments   6,976
Fair Value   $ (70)
Investment, Identifier [Axis]: STV Group, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.40% [1],[2],[5],[8],[13] 0.38% [3],[4],[9],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 23,920  
Ending balance 23,653 [1],[2],[5],[8],[13] $ 23,920 [3],[4],[9],[12],[14]
Investment, Identifier [Axis]: STV Group, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 4,883 4,883
Fair Value (37) $ 0
Investment, Identifier [Axis]: Saber Power Services, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[11],[12]   0.74%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] 46,154  
Ending balance [3],[4],[9],[11],[12]   $ 46,154
Investment, Identifier [Axis]: Saber Power Services, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[11],[12],[14]   0.01%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 769  
Ending balance [3],[4],[9],[11],[12],[14]   $ 769
Investment, Identifier [Axis]: Saber Power Services, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[8],[13] 0.77%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[8],[13] $ 45,923  
Investment, Identifier [Axis]: Saber Power Services, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 3,846 3,077
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Safety Borrower Holdings, LP 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[8],[15] 0.13%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[8],[15] $ 7,492  
Investment, Identifier [Axis]: Safety Borrower Holdings, LP 2 | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[11],[12],[14],[16]   0.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[16] $ 30  
Ending balance [3],[4],[11],[12],[14],[16]   $ 30
Investment, Identifier [Axis]: Safety Borrower Holdings, LP 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[7],[8],[13],[15] 0.00%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[7],[8],[13],[15] $ 28  
Investment, Identifier [Axis]: Safety Borrower Holdings, LP | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 917 917
Fair Value (2) $ 0
Investment, Identifier [Axis]: Safety Borrower Holdings, LP | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12],[16]   0.12%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] 7,606  
Ending balance [3],[4],[12],[16]   $ 7,606
Investment, Identifier [Axis]: Safety Borrower Holdings, LP | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 611 611
Fair Value 0 0
Investment, Identifier [Axis]: Sail Bidco, Ltd. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 1,910 1,910
Fair Value $ (10) $ 0
Investment, Identifier [Axis]: Sail Bidco, Ltd. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.18% [1],[2],[6],[7],[8],[13],[18] 0.17% [3],[4],[10],[11],[12],[14],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[14],[17] $ 10,680  
Ending balance 10,509 [1],[2],[6],[7],[8],[13],[18] $ 10,680 [3],[4],[10],[11],[12],[14],[17]
Investment, Identifier [Axis]: Sam Holding Co, Inc. 1 | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12],[16]   0.58%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] 36,385  
Ending balance [3],[4],[12],[16]   $ 36,385
Investment, Identifier [Axis]: Sam Holding Co, Inc. 2 | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12],[16]   0.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] 15,640  
Ending balance [3],[4],[12],[16]   $ 15,640
Investment, Identifier [Axis]: Sam Holding Co, Inc. 3 | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12],[16]   0.18%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] 11,292  
Ending balance [3],[4],[12],[16]   $ 11,292
Investment, Identifier [Axis]: Sam Holding Co, Inc. 4 | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12],[16]   0.16%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] 9,849  
Ending balance [3],[4],[12],[16]   $ 9,849
Investment, Identifier [Axis]: Sam Holding Co, Inc. 5 | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[11],[12],[14],[16]   0.04%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[16] 2,200  
Ending balance [3],[4],[11],[12],[14],[16]   $ 2,200
Investment, Identifier [Axis]: Sam Holding Co, Inc. 6 | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[11],[12],[14],[16]   0.19%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[16] 11,909  
Ending balance [3],[4],[11],[12],[14],[16]   $ 11,909
Investment, Identifier [Axis]: Sam Holding Co, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 1,364 9,800
Fair Value $ 0 0
Investment, Identifier [Axis]: Sam Holding Co, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[8],[13],[15] 0.09%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[8],[13],[15] $ 5,424  
Investment, Identifier [Axis]: Sam Holding Co, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments   6,000
Fair Value   $ 0
Investment, Identifier [Axis]: Scientian 2 Spain, S.L. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[6],[7],[8],[18] 0.00% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 124  
Ending balance $ 121 [1],[2],[6],[7],[8],[18] $ 124 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Scientian France, SAS | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[6],[7],[8],[18] 0.00% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 273  
Ending balance 267 [1],[2],[6],[7],[8],[18] $ 273 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Scorpio BidCo SAS | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 4,818 4,818
Fair Value $ (51) $ (52)
Investment, Identifier [Axis]: Scorpio BidCo SAS | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.44% [1],[2],[6],[7],[8],[13],[18] 0.43% [3],[4],[10],[11],[12],[14],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[14],[17] $ 26,773  
Ending balance $ 26,030 [1],[2],[6],[7],[8],[13],[18] $ 26,773 [3],[4],[10],[11],[12],[14],[17]
Investment, Identifier [Axis]: Seahawk Bidco, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[8],[15] 0.87%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[8],[15] $ 51,673  
Investment, Identifier [Axis]: Seahawk Bidco, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[7],[8],[13],[15] 0.01%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[7],[8],[13],[15] $ 638  
Investment, Identifier [Axis]: Seahawk Bidco, LLC 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[7],[8],[13],[15] 0.03%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[7],[8],[13],[15] $ 1,918  
Investment, Identifier [Axis]: Seahawk Bidco, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 18,787  
Fair Value 0  
Investment, Identifier [Axis]: Seahawk Bidco, LLC | Delayed Draw Term Loan 1    
Schedule of Investments [Line Items]    
Unfunded commitments   2,656
Fair Value   0
Investment, Identifier [Axis]: Seahawk Bidco, LLC | Delayed Draw Term Loan 2    
Schedule of Investments [Line Items]    
Unfunded commitments   20,814
Fair Value   $ 0
Investment, Identifier [Axis]: Seahawk Bidco, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12],[14],[16]   0.79%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[14],[16] 49,124  
Ending balance [3],[4],[12],[14],[16]   $ 49,124
Investment, Identifier [Axis]: Seahawk Bidco, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 3,097 3,753
Fair Value $ 0 $ (34)
Investment, Identifier [Axis]: SelectQuote, Inc. - Warrants | | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[6],[8] 0.00% [3],[4],[10],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[12] $ 72  
Ending balance 168 [1],[2],[6],[8] $ 72 [3],[4],[10],[12]
Investment, Identifier [Axis]: SelectQuote, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[10],[11],[12],[30]   0.53%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[30] 32,853  
Ending balance [3],[4],[10],[11],[12],[30]   $ 32,853
Investment, Identifier [Axis]: Seven Bidco, SASU | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 689 689
Fair Value $ (3) $ (3)
Investment, Identifier [Axis]: Seven Bidco, SASU | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.06% [1],[2],[6],[7],[8],[13],[18] 0.06% [3],[4],[10],[11],[12],[14],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[14],[17] $ 3,986  
Ending balance $ 3,856 [1],[2],[6],[7],[8],[13],[18] $ 3,986 [3],[4],[10],[11],[12],[14],[17]
Investment, Identifier [Axis]: Shelf Bidco, Ltd. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 2.49% [1],[2],[5],[6],[8],[24] 2.38% [3],[4],[9],[10],[12],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[10],[12],[26] $ 148,382  
Ending balance $ 147,632 [1],[2],[5],[6],[8],[24] $ 148,382 [3],[4],[9],[10],[12],[26]
Investment, Identifier [Axis]: Shelf Holdco, Ltd. - Common Equity | | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[6],[8] 0.00% [3],[4],[10],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[12] $ 190  
Ending balance $ 190 [1],[2],[6],[8] $ 190 [3],[4],[10],[12]
Investment, Identifier [Axis]: Signant Finance One, Ltd. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8],[13] 0.63%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8],[13] $ 37,470  
Investment, Identifier [Axis]: Signant Finance One, Ltd. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8],[13] 0.02%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8],[13] $ 1,054  
Investment, Identifier [Axis]: Signant Finance One, Ltd. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 4,638 8,696
Fair Value (23) $ 0
Investment, Identifier [Axis]: Signant Finance One, Ltd. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[11],[12],[14]   0.60%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] 37,225  
Ending balance [3],[4],[9],[11],[12],[14]   $ 37,225
Investment, Identifier [Axis]: Signant Finance One, Ltd. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 2,551 3,623
Fair Value 0 (36)
Investment, Identifier [Axis]: Simplicity Financial Marketing Group Holdings, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments   1,122
Fair Value   $ 0
Investment, Identifier [Axis]: Simplicity Financial Marketing Group Holdings, Inc. | Delayed Draw Term Loan 1    
Schedule of Investments [Line Items]    
Unfunded commitments 140  
Fair Value 0  
Investment, Identifier [Axis]: Simplicity Financial Marketing Group Holdings, Inc. | Delayed Draw Term Loan 2    
Schedule of Investments [Line Items]    
Unfunded commitments 2,827  
Fair Value $ (21)  
Investment, Identifier [Axis]: Simplicity Financial Marketing Group Holdings, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.17% [1],[2],[5],[6],[7],[8],[13] 0.14% [3],[4],[9],[10],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[10],[11],[12],[14] $ 9,019  
Ending balance 9,931 [1],[2],[5],[6],[7],[8],[13] $ 9,019 [3],[4],[9],[10],[11],[12],[14]
Investment, Identifier [Axis]: Simplicity Financial Marketing Group Holdings, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 1,076 1,076
Fair Value $ (11) $ (11)
Investment, Identifier [Axis]: Smile Doctors, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.17% [1],[2],[5],[8] 0.17% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 10,319  
Ending balance $ 10,266 [1],[2],[5],[8] $ 10,319 [3],[4],[9],[12]
Investment, Identifier [Axis]: Smile Doctors, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.04% [1],[2],[5],[7],[8],[13] 0.04% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 2,454  
Ending balance 2,441 [1],[2],[5],[7],[8],[13] $ 2,454 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: Smile Doctors, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 1,233 1,233
Fair Value $ (43) $ (43)
Investment, Identifier [Axis]: Snoopy Bidco, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 5.77% [1],[2],[5],[8] 5.44% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 339,635  
Ending balance $ 342,763 [1],[2],[5],[8] $ 339,635 [3],[4],[9],[12]
Investment, Identifier [Axis]: Solis Midco, SAS 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[6],[7],[8],[13],[18] 0.01% [3],[4],[10],[11],[12],[14],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[14],[17] $ 361  
Ending balance $ 348 [1],[2],[6],[7],[8],[13],[18] $ 361 [3],[4],[10],[11],[12],[14],[17]
Investment, Identifier [Axis]: Solis Midco, SAS 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[6],[7],[8],[18] 0.00% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 120  
Ending balance 122 [1],[2],[6],[7],[8],[18] $ 120 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Solis Midco, SAS | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 145 145
Fair Value (1) 0
Investment, Identifier [Axis]: Spaceship Purchaser, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 13,072 13,072
Fair Value $ (65) $ (65)
Investment, Identifier [Axis]: Spaceship Purchaser, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.08% [1],[2],[5],[8],[13],[24] 0.08% [3],[4],[9],[11],[12],[14],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14],[26] $ 5,085  
Ending balance 5,006 [1],[2],[5],[8],[13],[24] $ 5,085 [3],[4],[9],[11],[12],[14],[26]
Investment, Identifier [Axis]: Spaceship Purchaser, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 10,894 10,894
Fair Value $ (109) $ (109)
Investment, Identifier [Axis]: Sparta UK Bidco, Ltd. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.39% [1],[2],[6],[7],[8],[18] 0.38% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 23,965  
Ending balance $ 23,347 [1],[2],[6],[7],[8],[18] $ 23,965 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Sparta UK Bidco, Ltd. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[6],[7],[8],[18] 0.01% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 552  
Ending balance $ 531 [1],[2],[6],[7],[8],[18] $ 552 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: SpecialtyCare, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.20% [1],[2],[7],[8],[15] 0.19% [3],[4],[11],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[16] $ 12,143  
Ending balance $ 12,052 [1],[2],[7],[8],[15] $ 12,143 [3],[4],[11],[12],[16]
Investment, Identifier [Axis]: SpecialtyCare, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[7],[8],[13],[15] 0.00% [3],[4],[11],[12],[14],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[17] $ 107  
Ending balance 100 [1],[2],[7],[8],[13],[15] $ 107 [3],[4],[11],[12],[14],[17]
Investment, Identifier [Axis]: SpecialtyCare, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 317 317
Fair Value 0 0
Investment, Identifier [Axis]: SpecialtyCare, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 1,047 1,047
Fair Value $ (5) $ 0
Investment, Identifier [Axis]: Spectrum Safety Solutions Purchaser, LLC - Common Equity | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[6],[8] 0.12%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[6],[8] $ 6,768  
Investment, Identifier [Axis]: Spectrum Safety Solutions Purchaser, LLC - Common Equity | | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[10],[12]   0.10%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[12] $ 6,186  
Ending balance [3],[4],[10],[12]   $ 6,186
Investment, Identifier [Axis]: Spectrum Safety Solutions Purchaser, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 1.18% [1],[2],[6],[8],[13],[19] 1.07% [3],[4],[10],[12],[14],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[12],[14],[20] $ 66,840  
Ending balance $ 70,281 [1],[2],[6],[8],[13],[19] $ 66,840 [3],[4],[10],[12],[14],[20]
Investment, Identifier [Axis]: Spectrum Safety Solutions Purchaser, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.29% [1],[2],[6],[7],[8],[19] 0.28% [3],[4],[10],[11],[12],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[20] $ 17,526  
Ending balance $ 16,954 [1],[2],[6],[7],[8],[19] $ 17,526 [3],[4],[10],[11],[12],[20]
Investment, Identifier [Axis]: Spectrum Safety Solutions Purchaser, LLC 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.04% [1],[2],[6],[7],[8],[19] 0.02% [3],[4],[10],[11],[12],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[20] $ 1,306  
Ending balance 2,432 [1],[2],[6],[7],[8],[19] $ 1,306 [3],[4],[10],[11],[12],[20]
Investment, Identifier [Axis]: Spectrum Safety Solutions Purchaser, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 12,901 12,901
Fair Value 0 0
Investment, Identifier [Axis]: Spectrum Safety Solutions Purchaser, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 6,582 11,228
Fair Value 0 $ 0
Investment, Identifier [Axis]: Speedster Bidco, GmbH 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[10],[12],[14],[17]   0.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[12],[14],[17] 117  
Ending balance [3],[4],[10],[12],[14],[17]   $ 117
Investment, Identifier [Axis]: Speedster Bidco, GmbH 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[10],[12],[17]   0.59%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[12],[17] $ 36,536  
Ending balance [3],[4],[10],[12],[17]   $ 36,536
Investment, Identifier [Axis]: Speedster Bidco, GmbH | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[6],[8],[18] 0.58%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[6],[8],[18] $ 34,868  
Investment, Identifier [Axis]: Speedster Bidco, GmbH | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 1,801 1,693
Fair Value $ (103) $ 0
Investment, Identifier [Axis]: Spitfire Parent, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.95% [1],[2],[8],[15] 0.89% [3],[4],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] $ 55,682  
Ending balance $ 55,950 [1],[2],[8],[15] $ 55,682 [3],[4],[12],[16]
Investment, Identifier [Axis]: Spitfire Parent, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.35% [1],[2],[8],[15] 0.33% [3],[4],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] $ 20,560  
Ending balance $ 20,660 [1],[2],[8],[15] $ 20,560 [3],[4],[12],[16]
Investment, Identifier [Axis]: Spitfire Parent, Inc. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.19% [1],[2],[7],[8],[15] 0.19% [3],[4],[11],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[16] $ 11,666  
Ending balance $ 11,397 [1],[2],[7],[8],[15] $ 11,666 [3],[4],[11],[12],[16]
Investment, Identifier [Axis]: Stark International Lux 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.02% [1],[2],[6],[7],[8],[18] 0.02% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 1,221  
Ending balance $ 1,221 [1],[2],[6],[7],[8],[18] $ 1,221 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Stark International Lux 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[6],[7],[8],[18] 0.00% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 215  
Ending balance 209 [1],[2],[6],[7],[8],[18] $ 215 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: State Street Institutional U.S. Government Money Market Fund - Investor Class    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4]   0.11%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4] $ 6,807  
Ending balance [3],[4]   $ 6,807
Investment, Identifier [Axis]: State Street Institutional U.S. Government Money Market Fund - Premier Class    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.11% [1],[2] 0.27% [3],[4]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4] $ 17,168  
Ending balance 6,590 [1],[2] $ 17,168 [3],[4]
Investment, Identifier [Axis]: Stepping Stones Healthcare Services, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[12],[14]   0.05%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] 2,894  
Ending balance [3],[4],[9],[12],[14]   $ 2,894
Investment, Identifier [Axis]: Stepping Stones Healthcare Services, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[11],[12],[14]   0.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] 202  
Ending balance [3],[4],[9],[11],[12],[14]   $ 202
Investment, Identifier [Axis]: Stepping Stones Healthcare Services, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 726 540
Fair Value $ (2) 0
Investment, Identifier [Axis]: Stepping Stones Healthcare Services, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[8],[13] 0.05%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[8],[13] $ 3,074  
Investment, Identifier [Axis]: Stepping Stones Healthcare Services, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 451 149
Fair Value $ (10) $ 0
Investment, Identifier [Axis]: Summit Buyer, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[8] 0.19%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[8] $ 11,277  
Investment, Identifier [Axis]: Summit Buyer, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8],[13] 0.10%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8],[13] $ 6,167  
Investment, Identifier [Axis]: Summit Buyer, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 6,235  
Fair Value (16)  
Investment, Identifier [Axis]: Summit Buyer, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 989  
Fair Value 0  
Investment, Identifier [Axis]: Supernova Borrower Holdco, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 2,049  
Fair Value $ 0  
Investment, Identifier [Axis]: Supernova Borrower Holdco, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[7],[8],[13],[19] 0.09%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[7],[8],[13],[19] $ 5,598  
Investment, Identifier [Axis]: Supernova Borrower Holdco, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 717  
Fair Value $ (4)  
Investment, Identifier [Axis]: TEI Intermediate, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.44% [1],[2],[5],[8] 0.42% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 25,988  
Ending balance $ 26,365 [1],[2],[5],[8] $ 25,988 [3],[4],[9],[12]
Investment, Identifier [Axis]: TEI Intermediate, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[5],[7],[8],[13] 0.02% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 970  
Ending balance $ 433 [1],[2],[5],[7],[8],[13] $ 970 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: TEI Intermediate, LLC 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.10% [1],[2],[5],[7],[8],[13] 0.02% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 1,053  
Ending balance 5,911 [1],[2],[5],[7],[8],[13] $ 1,053 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: TEI Intermediate, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 2,345 7,203
Fair Value 0 0
Investment, Identifier [Axis]: TEI Intermediate, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 3,075 2,539
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: THG Acquisition, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.19% [1],[2],[5],[7],[8] 0.19% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 11,565  
Ending balance $ 11,507 [1],[2],[5],[7],[8] $ 11,565 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: THG Acquisition, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.04% [1],[2],[5],[7],[8],[13] 0.01% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 924  
Ending balance 2,237 [1],[2],[5],[7],[8],[13] $ 924 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: THG Acquisition, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 669 1,841
Fair Value 0 0
Investment, Identifier [Axis]: THG Acquisition, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 980 1,128
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: THL Fund IX Investors (Plymouth II), LP - LP Interest | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[8] 0.01%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[8] $ 402  
Investment, Identifier [Axis]: THL Fund IX Investors (Plymouth II), LP - LP Interest | | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12]   0.01%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 389  
Ending balance [3],[4],[12]   $ 389
Investment, Identifier [Axis]: TPG IX Newark CI, LP - LP Interest | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.03% [1],[2],[8] 0.03% [3],[4],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 1,966  
Ending balance 1,663 [1],[2],[8] $ 1,966 [3],[4],[12]
Investment, Identifier [Axis]: TRP Infrastructure Services, LLC 1 | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12],[16]   0.61%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] $ 37,994  
Ending balance [3],[4],[12],[16]   $ 37,994
Investment, Identifier [Axis]: TRP Infrastructure Services, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[8],[15] 0.63%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[8],[15] $ 37,605  
Investment, Identifier [Axis]: TRP Infrastructure Services, LLC 2 | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[11],[12],[14],[16]   0.53%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[16] $ 33,330  
Ending balance [3],[4],[11],[12],[14],[16]   $ 33,330
Investment, Identifier [Axis]: TRP Infrastructure Services, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[8],[13],[15] 1.00%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[8],[13],[15] $ 58,681  
Investment, Identifier [Axis]: TRP Infrastructure Services, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 1,118  
Fair Value 0  
Investment, Identifier [Axis]: TRP Infrastructure Services, LLC | Delayed Draw Term Loan 1    
Schedule of Investments [Line Items]    
Unfunded commitments   25,647
Fair Value   0
Investment, Identifier [Axis]: TRP Infrastructure Services, LLC | Delayed Draw Term Loan 2    
Schedule of Investments [Line Items]    
Unfunded commitments   1,346
Fair Value   $ 0
Investment, Identifier [Axis]: Tailwind Colony Holding Corporation | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12],[16]   0.73%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[16] $ 45,759  
Ending balance [3],[4],[12],[16]   $ 45,759
Investment, Identifier [Axis]: Tango Bidco, SAS 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.22% [1],[2],[6],[7],[8],[18] 0.22% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 13,882  
Ending balance $ 13,361 [1],[2],[6],[7],[8],[18] $ 13,882 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Tango Bidco, SAS 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.08% [1],[2],[6],[7],[8],[13],[18] 0.06% [3],[4],[10],[11],[12],[14],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[14],[17] $ 3,787  
Ending balance 4,745 [1],[2],[6],[7],[8],[13],[18] $ 3,787 [3],[4],[10],[11],[12],[14],[17]
Investment, Identifier [Axis]: Tango Bidco, SAS | Delayed Draw Term Loan 1    
Schedule of Investments [Line Items]    
Unfunded commitments 23,054 23,054
Fair Value 0 0
Investment, Identifier [Axis]: Tango Bidco, SAS | Delayed Draw Term Loan 2    
Schedule of Investments [Line Items]    
Unfunded commitments 558 962
Fair Value 0 (7)
Investment, Identifier [Axis]: Tango Bidco, SAS | Delayed Draw Term Loan 3    
Schedule of Investments [Line Items]    
Unfunded commitments 962 1,580
Fair Value $ (15) 0
Investment, Identifier [Axis]: Teneo Holdings, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[7],[8],[19] 1.96%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[7],[8],[19] $ 116,485  
Investment, Identifier [Axis]: Teneo Holdings, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[7],[8],[13],[19] 0.07%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[7],[8],[13],[19] $ 4,259  
Investment, Identifier [Axis]: Teneo Holdings, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 5,324 9,583
Fair Value 0 $ (48)
Investment, Identifier [Axis]: Teneo Holdings, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[11],[12],[14],[20]   1.86%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[20] 116,320  
Ending balance [3],[4],[11],[12],[14],[20]   $ 116,320
Investment, Identifier [Axis]: Teneo Holdings, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 11,712 11,712
Fair Value $ 0 $ (117)
Investment, Identifier [Axis]: Tennessee Bidco, Limited 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 1.43% [1],[2],[6],[8],[18] 1.36% [3],[4],[10],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[12],[17] $ 84,934  
Ending balance $ 84,808 [1],[2],[6],[8],[18] $ 84,934 [3],[4],[10],[12],[17]
Investment, Identifier [Axis]: Tennessee Bidco, Limited 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.33% [1],[2],[6],[7],[8],[18] 0.32% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 19,750  
Ending balance $ 19,700 [1],[2],[6],[7],[8],[18] $ 19,750 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Tennessee Bidco, Limited 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 1.02% [1],[2],[6],[7],[8],[18] 0.99% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 61,768  
Ending balance $ 60,628 [1],[2],[6],[7],[8],[18] $ 61,768 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Tennessee Bidco, Limited 4 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.08% [1],[2],[6],[7],[8],[18] 0.07% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 4,657  
Ending balance $ 4,555 [1],[2],[6],[7],[8],[18] $ 4,657 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Tennessee Bidco, Limited 5 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.04% [1],[2],[6],[7],[8],[18] 0.04% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 2,252  
Ending balance $ 2,184 [1],[2],[6],[7],[8],[18] $ 2,252 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Tennessee Bidco, Limited 6 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.18% [1],[2],[6],[7],[8],[18] 0.18% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 11,056  
Ending balance $ 10,722 [1],[2],[6],[7],[8],[18] $ 11,056 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Tennessee Bidco, Limited 7 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.11% [1],[2],[6],[7],[8],[18] 0.11% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 6,639  
Ending balance $ 6,622 [1],[2],[6],[7],[8],[18] $ 6,639 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Tennessee Bidco, Limited 8 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[6],[7],[8],[13],[18] 0.01% [3],[4],[10],[11],[12],[14],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[14],[17] $ 512  
Ending balance $ 337 [1],[2],[6],[7],[8],[13],[18] $ 512 [3],[4],[10],[11],[12],[14],[17]
Investment, Identifier [Axis]: Tennessee Bidco, Limited 9 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.07% [1],[2],[6],[7],[8],[18] 0.07% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 4,187  
Ending balance 4,061 [1],[2],[6],[7],[8],[18] $ 4,187 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Tennessee Bidco, Limited | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 13,160 13,160
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: The Fertility Partners, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.08% [1],[2],[5],[6],[7],[8] 0.07% [3],[4],[9],[10],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[10],[11],[12] $ 4,596  
Ending balance $ 4,680 [1],[2],[5],[6],[7],[8] $ 4,596 [3],[4],[9],[10],[11],[12]
Investment, Identifier [Axis]: The Fertility Partners, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.06% [1],[2],[5],[6],[7],[8] 0.05% [3],[4],[9],[10],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[10],[11],[12],[14] $ 3,336  
Ending balance $ 3,300 [1],[2],[5],[6],[7],[8] $ 3,336 [3],[4],[9],[10],[11],[12],[14]
Investment, Identifier [Axis]: The Fertility Partners, Inc. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[5],[6],[7],[8] 0.00% [3],[4],[9],[10],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[10],[11],[12] $ 255  
Ending balance $ 260 [1],[2],[5],[6],[7],[8] $ 255 [3],[4],[9],[10],[11],[12]
Investment, Identifier [Axis]: The Fertility Partners, Inc. 4 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[6],[7],[8],[13] 0.00%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[6],[7],[8],[13] $ 165  
Investment, Identifier [Axis]: The Fertility Partners, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 90 301
Fair Value 0 $ (12)
Investment, Identifier [Axis]: The Hiller Companies, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[12]   0.13%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] 8,131  
Ending balance [3],[4],[9],[12]   $ 8,131
Investment, Identifier [Axis]: The Hiller Companies, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[11],[12],[14]   0.03%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] 2,128  
Ending balance [3],[4],[9],[11],[12],[14]   $ 2,128
Investment, Identifier [Axis]: The Hiller Companies, LLC 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[11],[12],[14]   0.02%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 938  
Ending balance [3],[4],[9],[11],[12],[14]   $ 938
Investment, Identifier [Axis]: The Hiller Companies, LLC | Delayed Draw Term Loan 1    
Schedule of Investments [Line Items]    
Unfunded commitments   121
Fair Value   0
Investment, Identifier [Axis]: The Hiller Companies, LLC | Delayed Draw Term Loan 2    
Schedule of Investments [Line Items]    
Unfunded commitments   449
Fair Value   0
Investment, Identifier [Axis]: The Hiller Companies, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments   1,432
Fair Value   $ 0
Investment, Identifier [Axis]: The North Highland Co, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.26% [1],[2],[5],[8] 0.25% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 15,585  
Ending balance $ 15,506 [1],[2],[5],[8] $ 15,585 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: The North Highland Co, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[5],[7],[8],[13] 0.01% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 487  
Ending balance 403 [1],[2],[5],[7],[8],[13] $ 487 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: The North Highland Co, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 5,903 5,903
Fair Value (30) (30)
Investment, Identifier [Axis]: The North Highland Co, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 3,710 3,626
Fair Value 0 0
Investment, Identifier [Axis]: Themis Solutions, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 10,319 10,319
Fair Value $ (103) $ (137)
Investment, Identifier [Axis]: Themis Solutions, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.41% [1],[2],[5],[6],[7],[8],[13] 0.38% [3],[4],[9],[10],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[10],[11],[12],[14] $ 23,735  
Ending balance 24,321 [1],[2],[5],[6],[7],[8],[13] $ 23,735 [3],[4],[9],[10],[11],[12],[14]
Investment, Identifier [Axis]: Themis Solutions, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 8,599 8,599
Fair Value (86) $ (120)
Investment, Identifier [Axis]: Thevelia US, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[10],[11],[20]   0.02%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[20] $ 1,277  
Ending balance [3],[4],[10],[11],[20]   $ 1,277
Investment, Identifier [Axis]: Thevelia US, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.08% [1],[2],[6],[7],[8],[19] 0.08% [3],[4],[10],[11],[12],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[20] $ 4,920  
Ending balance $ 4,920 [1],[2],[6],[7],[8],[19] $ 4,920 [3],[4],[10],[11],[12],[20]
Investment, Identifier [Axis]: Titan Investment Company, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[8],[18],[23] 0.14%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[8],[18],[23] $ 8,047  
Investment, Identifier [Axis]: Titan Investment Company, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[7],[8],[18] 0.02%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[7],[8],[18] $ 1,476  
Investment, Identifier [Axis]: Titan Investment Company, Inc. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[7],[8],[18] 0.03%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[7],[8],[18] $ 1,771  
Investment, Identifier [Axis]: Titan Investment Company, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12],[17],[25]   0.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[17],[25] 31,242  
Ending balance [3],[4],[12],[17],[25]   $ 31,242
Investment, Identifier [Axis]: Tricentis Operations Holdings, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 4,595 4,595
Fair Value $ (23) $ (23)
Investment, Identifier [Axis]: Tricentis Operations Holdings, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.40% [1],[2],[5],[8],[13] 0.38% [3],[4],[11],[12],[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[16] $ 23,787  
Ending balance 23,791 [1],[2],[5],[8],[13] $ 23,787 [3],[4],[11],[12],[14],[16]
Investment, Identifier [Axis]: Tricentis Operations Holdings, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 2,872 2,872
Fair Value $ (29) $ (29)
Investment, Identifier [Axis]: Tricor Horizon - LP Interest | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[6],[8] 0.01% [3],[4],[10],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[12] $ 394  
Ending balance $ 414 [1],[2],[6],[8] $ 394 [3],[4],[10],[12]
Investment, Identifier [Axis]: Trinity Air Consultants Holdings Corp. - Common Units | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[8] 0.00% [3],[4],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 6  
Ending balance $ 8 [1],[2],[8] $ 6 [3],[4],[12]
Investment, Identifier [Axis]: Trinity Air Consultants Holdings Corp. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 1.00% [1],[2],[5],[8] 0.95% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 59,601  
Ending balance $ 59,302 [1],[2],[5],[8] $ 59,601 [3],[4],[9],[12]
Investment, Identifier [Axis]: Trinity Air Consultants Holdings Corp. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.58% [1],[2],[5],[8],[13] 0.55% [3],[4],[9],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 34,525  
Ending balance 34,351 [1],[2],[5],[8],[13] $ 34,525 [3],[4],[9],[12],[14]
Investment, Identifier [Axis]: Trinity Air Consultants Holdings Corp. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 7,269 7,269
Fair Value 0 0
Investment, Identifier [Axis]: Trinity Partners Holdings, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 1,433 1,433
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Trinity Partners Holdings, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.08% [1],[2],[5],[8],[13],[24] 0.08% [3],[4],[12],[14],[16],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[14],[16],[26] $ 5,153  
Ending balance $ 4,996 [1],[2],[5],[8],[13],[24] $ 5,153 [3],[4],[12],[14],[16],[26]
Investment, Identifier [Axis]: Triple Lift, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.20% [1],[2],[5],[8] 0.20% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 12,444  
Ending balance $ 11,838 [1],[2],[5],[8] $ 12,444 [3],[4],[9],[12]
Investment, Identifier [Axis]: Triple Lift, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.68% [1],[2],[5],[8],[13] 0.68% [3],[4],[9],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 42,163  
Ending balance 39,769 [1],[2],[5],[8],[13] $ 42,163 [3],[4],[9],[12],[14]
Investment, Identifier [Axis]: Triple Lift, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 7,697 7,697
Fair Value $ (962) $ (654)
Investment, Identifier [Axis]: Turing Holdco, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.12% [1],[2],[6],[7],[8],[18] 0.12% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 7,359  
Ending balance $ 6,924 [1],[2],[6],[7],[8],[18] $ 7,359 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Turing Holdco, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.06% [1],[2],[6],[7],[8],[18] 0.06% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 3,659  
Ending balance $ 3,464 [1],[2],[6],[7],[8],[18] $ 3,659 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Turing Holdco, Inc. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.17% [1],[2],[6],[7],[8],[18] 0.18% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 11,171  
Ending balance $ 10,204 [1],[2],[6],[7],[8],[18] $ 11,171 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Turing Holdco, Inc. 4 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.07% [1],[2],[6],[7],[8],[18] 0.07% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 4,240  
Ending balance $ 3,901 [1],[2],[6],[7],[8],[18] $ 4,240 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Turing Holdco, Inc. 5 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.27% [1],[2],[5],[6],[8] 0.28% [3],[4],[9],[10],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[10],[12] $ 17,299  
Ending balance $ 16,277 [1],[2],[5],[6],[8] $ 17,299 [3],[4],[9],[10],[12]
Investment, Identifier [Axis]: Turing Holdco, Inc. 6 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.27% [1],[2],[5],[6],[7],[8] 0.28% [3],[4],[9],[10],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[10],[11],[12] $ 17,518  
Ending balance $ 16,218 [1],[2],[5],[6],[7],[8] $ 17,518 [3],[4],[9],[10],[11],[12]
Investment, Identifier [Axis]: UMP Holdings, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.02% [1],[2],[5],[7] 0.02% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 1,041  
Ending balance $ 1,036 [1],[2],[5],[7] $ 1,041 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: UMP Holdings, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.02% [1],[2],[5],[7],[8] 0.02% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 1,428  
Ending balance $ 1,421 [1],[2],[5],[7],[8] $ 1,428 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: US Oral Surgery Management Holdco, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.62% [1],[2],[5],[8] 0.59% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 37,021  
Ending balance $ 37,021 [1],[2],[5],[8] $ 37,021 [3],[4],[9],[12]
Investment, Identifier [Axis]: US Oral Surgery Management Holdco, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.26% [1],[2],[5],[8] 0.25% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 15,616  
Ending balance $ 15,616 [1],[2],[5],[8] $ 15,616 [3],[4],[9],[12]
Investment, Identifier [Axis]: US Oral Surgery Management Holdco, LLC 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.85% [1],[2],[5],[8],[13] 0.76% [3],[4],[9],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 47,649  
Ending balance $ 50,712 [1],[2],[5],[8],[13] $ 47,649 [3],[4],[9],[12],[14]
Investment, Identifier [Axis]: US Oral Surgery Management Holdco, LLC 4 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[5],[7],[8] 0.00% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 83  
Ending balance 83 [1],[2],[5],[7],[8] $ 83 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: US Oral Surgery Management Holdco, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 18,472 21,535
Fair Value 0 0
Investment, Identifier [Axis]: US Oral Surgery Management Holdco, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 3,735 3,735
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Unified Women's Healthcare, LP 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.03% [1],[2],[7],[8],[19] 0.03% [3],[4],[11],[12],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[20] $ 2,060  
Ending balance $ 2,049 [1],[2],[7],[8],[19] $ 2,060 [3],[4],[11],[12],[20]
Investment, Identifier [Axis]: Unified Women's Healthcare, LP 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.37% [1],[2],[8],[19] 0.36% [3],[4],[12],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[20] $ 22,347  
Ending balance $ 22,234 [1],[2],[8],[19] $ 22,347 [3],[4],[12],[20]
Investment, Identifier [Axis]: Unified Women's Healthcare, LP 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.75% [1],[2],[8],[13],[19] 1.07% [3],[4],[11],[12],[14],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[14],[20] $ 66,596  
Ending balance $ 44,289 [1],[2],[8],[13],[19] $ 66,596 [3],[4],[11],[12],[14],[20]
Investment, Identifier [Axis]: Unified Women's Healthcare, LP 4 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 1.18% [1],[2],[8],[19] 0.23% [3],[4],[12],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[20] $ 14,492  
Ending balance 69,970 [1],[2],[8],[19] $ 14,492 [3],[4],[12],[20]
Investment, Identifier [Axis]: Unified Women's Healthcare, LP | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 4,583 38,333
Fair Value 0 0
Investment, Identifier [Axis]: Unified Women's Healthcare, LP | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 241 241
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Varicent Parent Holdings Corp. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.22% [1],[2],[5],[7],[8],[13] 0.21% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 13,035  
Ending balance $ 13,078 [1],[2],[5],[7],[8],[13] $ 13,035 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: Varicent Parent Holdings Corp. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.09% [1],[2],[5],[7],[8],[13] 0.07% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 4,513  
Ending balance 5,108 [1],[2],[5],[7],[8],[13] $ 4,513 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: Varicent Parent Holdings Corp. | Delayed Draw Term Loan 1    
Schedule of Investments [Line Items]    
Unfunded commitments 1,245 1,832
Fair Value (16) (18)
Investment, Identifier [Axis]: Varicent Parent Holdings Corp. | Delayed Draw Term Loan 2    
Schedule of Investments [Line Items]    
Unfunded commitments 1,045 1,045
Fair Value (5) 0
Investment, Identifier [Axis]: Varicent Parent Holdings Corp. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 2,050  
Fair Value $ (28)  
Investment, Identifier [Axis]: Varicent Parent Holdings Corp. | Revolver 1    
Schedule of Investments [Line Items]    
Unfunded commitments   1,557
Fair Value   (23)
Investment, Identifier [Axis]: Varicent Parent Holdings Corp. | Revolver 2    
Schedule of Investments [Line Items]    
Unfunded commitments   493
Fair Value   (5)
Investment, Identifier [Axis]: Veregy Consolidated, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[8],[13] 0.46%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[8],[13] $ 27,444  
Investment, Identifier [Axis]: Veregy Consolidated, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8] 0.04%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8] $ 2,436  
Investment, Identifier [Axis]: Veregy Consolidated, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments   2,436
Fair Value   $ (6)
Investment, Identifier [Axis]: Veregy Consolidated, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[12],[14]   0.44%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] 27,576  
Ending balance [3],[4],[9],[12],[14]   $ 27,576
Investment, Identifier [Axis]: Veregy Consolidated, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 5,845 5,845
Fair Value $ (44) $ (44)
Investment, Identifier [Axis]: Victory Buyer, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.14% [1],[2],[8],[18] 0.15% [3],[4],[12],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[20] $ 9,619  
Ending balance $ 8,333 [1],[2],[8],[18] $ 9,619 [3],[4],[12],[20]
Investment, Identifier [Axis]: WHCG Purchaser III, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.36% [1],[2],[5],[7],[8] 0.34% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 21,027  
Ending balance $ 21,569 [1],[2],[5],[7],[8] $ 21,027 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: WHCG Purchaser III, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.20% [1],[2],[5],[7],[8],[23] 0.12% [3],[4],[9],[11],[12],[25]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[25] $ 7,484  
Ending balance 11,977 [1],[2],[5],[7],[8],[23] $ 7,484 [3],[4],[9],[11],[12],[25]
Investment, Identifier [Axis]: WHCG Purchaser III, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 7,044 7,044
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: WHCG Purchaser, Inc. - Class A Common Units | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[8] 0.00%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[8] $ 0  
Investment, Identifier [Axis]: WHCG Purchaser, Inc. - Class A Common Units | | Non - Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[12]   0.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 0  
Ending balance [3],[4],[12]   $ 0
Investment, Identifier [Axis]: WPEngine, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 1.11% [1],[2],[5],[8],[13] 1.06% [3],[4],[9],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12],[14] $ 66,467  
Ending balance 65,132 [1],[2],[5],[8],[13] $ 66,467 [3],[4],[9],[12],[14]
Investment, Identifier [Axis]: WPEngine, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 6,667 6,667
Fair Value (200) $ (200)
Investment, Identifier [Axis]: Water Holdings Acquisition, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[12]   0.51%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] 31,992  
Ending balance [3],[4],[9],[12]   $ 31,992
Investment, Identifier [Axis]: Water Holdings Acquisition, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[11],[12],[14]   0.06%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 3,922  
Ending balance [3],[4],[9],[11],[12],[14]   $ 3,922
Investment, Identifier [Axis]: Water Holdings Acquisition, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments   2,110
Fair Value   $ 0
Investment, Identifier [Axis]: West Monroe Partners, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.24% [1],[2],[5],[8] 0.23% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 14,301  
Ending balance $ 14,299 [1],[2],[5],[8] $ 14,301 [3],[4],[9],[12]
Investment, Identifier [Axis]: West Monroe Partners, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[5],[7],[8],[13] 0.01% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 460  
Ending balance $ 460 [1],[2],[5],[7],[8],[13] $ 460 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: West Monroe Partners, LLC 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.43% [1],[2],[5],[8] 0.41% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 25,611  
Ending balance 25,611 [1],[2],[5],[8] $ 25,611 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: West Monroe Partners, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 1,443 1,443
Fair Value $ (29) $ (29)
Investment, Identifier [Axis]: West Star Aviation Acquisition, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.04% [1],[2],[5],[7],[8] 0.03% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 2,147  
Ending balance $ 2,125 [1],[2],[5],[7],[8] $ 2,147 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: West Star Aviation Acquisition, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.01% [1],[2],[5],[7],[8],[13] 0.00% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 255  
Ending balance 389 [1],[2],[5],[7],[8],[13] $ 255 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: West Star Aviation Acquisition, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 105 241
Fair Value 0 0
Investment, Identifier [Axis]: West Star Aviation Acquisition, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 256 256
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Windows Acquisition Holdings, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.69% [1],[2],[7],[8],[15] 0.69% [3],[4],[11],[12],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[11],[12],[16] $ 43,387  
Ending balance 41,145 [1],[2],[7],[8],[15] $ 43,387 [3],[4],[11],[12],[16]
Investment, Identifier [Axis]: Woolpert Holdings, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 2,750  
Fair Value $ 0  
Investment, Identifier [Axis]: Woolpert Holdings, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[7],[8],[13],[15] 0.04%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[7],[8],[13],[15] $ 2,250  
Investment, Identifier [Axis]: World Insurance Associates, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 12,770 17,695
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: World Insurance Associates, LLC | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 1.66% [1],[2],[8],[13],[15] 1.50% [3],[4],[12],[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12],[14],[16] $ 93,825  
Ending balance 98,312 [1],[2],[8],[13],[15] $ 93,825 [3],[4],[12],[14],[16]
Investment, Identifier [Axis]: World Insurance Associates, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 4,473 4,473
Fair Value $ (66) $ (66)
Investment, Identifier [Axis]: YA Intermediate Holdings II, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.13% [1],[2],[5],[8] 0.12% [3],[4],[9],[11],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12] $ 7,770  
Ending balance $ 7,711 [1],[2],[5],[8] $ 7,770 [3],[4],[9],[11],[12]
Investment, Identifier [Axis]: YA Intermediate Holdings II, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.03% [1],[2],[5],[7],[8],[13] 0.01% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 878  
Ending balance 1,867 [1],[2],[5],[7],[8],[13] $ 878 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: YA Intermediate Holdings II, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 2,237 2,787
Fair Value 0 0
Investment, Identifier [Axis]: YA Intermediate Holdings II, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 715 1,170
Fair Value $ 0 $ 0
Investment, Identifier [Axis]: Zendesk, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8],[13] 0.03%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8],[13] $ 1,790  
Investment, Identifier [Axis]: Zendesk, Inc. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8] 0.00%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8] $ 121  
Investment, Identifier [Axis]: Zendesk, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[11],[12],[14]   0.03%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] 1,839  
Ending balance [3],[4],[9],[11],[12],[14]   $ 1,839
Investment, Identifier [Axis]: Zendesk, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 169 169
Fair Value $ (3) $ 0
Investment, Identifier [Axis]: Zeus, LLC 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.39% [1],[2],[5],[8] 0.37% [3],[4],[9],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] $ 23,021  
Ending balance $ 23,151 [1],[2],[5],[8] $ 23,021 [3],[4],[9],[12]
Investment, Identifier [Axis]: Zeus, LLC 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.04% [1],[2],[5],[7],[8] 0.03% [3],[4],[9],[11],[12],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 1,968  
Ending balance $ 2,140 [1],[2],[5],[7],[8] $ 1,968 [3],[4],[9],[11],[12],[14]
Investment, Identifier [Axis]: Zeus, LLC 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [1],[2],[5],[7],[8],[13] 0.01%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [1],[2],[5],[7],[8],[13] $ 391  
Investment, Identifier [Axis]: Zeus, LLC | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments   2,284
Fair Value   0
Investment, Identifier [Axis]: Zeus, LLC | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments 2,855 3,426
Fair Value $ 0 $ (17)
Investment, Identifier [Axis]: Zoro - Common Equity | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[8] 0.00% [3],[4],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 26  
Ending balance $ 22 [1],[2],[8] $ 26 [3],[4],[12]
Investment, Identifier [Axis]: Zoro - Series A Preferred Shares | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.00% [1],[2],[8] 0.00% [3],[4],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[12] $ 182  
Ending balance $ 137 [1],[2],[8] $ 182 [3],[4],[12]
Investment, Identifier [Axis]: Zorro Bidco, Ltd. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.65% [1],[2],[6],[7],[8],[13],[18] 0.62% [3],[4],[10],[11],[12],[14],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[14],[17] $ 38,544  
Ending balance $ 38,718 [1],[2],[6],[7],[8],[13],[18] $ 38,544 [3],[4],[10],[11],[12],[14],[17]
Investment, Identifier [Axis]: Zorro Bidco, Ltd. 2 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.07% [1],[2],[6],[7],[8],[18] 0.07% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 4,223  
Ending balance $ 4,156 [1],[2],[6],[7],[8],[18] $ 4,223 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Zorro Bidco, Ltd. 3 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets 0.07% [1],[2] 0.07% [3],[4],[10],[11],[12],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[10],[11],[12],[17] $ 4,666  
Ending balance 4,430 [1],[2] $ 4,666 [3],[4],[10],[11],[12],[17]
Investment, Identifier [Axis]: Zorro Bidco, Ltd. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments 3,422 4,201
Fair Value 0 $ 0
Investment, Identifier [Axis]: eResearchTechnology, Inc. 1 | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[12]   2.45%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[12] 152,793  
Ending balance [3],[4],[9],[12]   $ 152,793
Investment, Identifier [Axis]: eResearchTechnology, Inc. | Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Unfunded commitments   24,793
Fair Value   $ 0
Investment, Identifier [Axis]: eResearchTechnology, Inc. | Non-Affiliated Issuer    
Schedule of Investments [Line Items]    
Fair Value as % of Net Assets [3],[4],[9],[11],[12],[14]   0.47%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [3],[4],[9],[11],[12],[14] $ 29,261  
Ending balance [3],[4],[9],[11],[12],[14]   $ 29,261
Investment, Identifier [Axis]: eResearchTechnology, Inc. | Revolver    
Schedule of Investments [Line Items]    
Unfunded commitments   14,414
Fair Value   $ (144)
[1] All securities are exempt from registration under the Securities Act of 1933, as amended (the “Securities Act”) and may be deemed to be “restricted securities.” As of June 30, 2026, the aggregate fair value of these securities is $13,364.3 million or 225.04% of the Company’s net assets. The initial acquisition dates have been included for such securities.
[2] Unless otherwise indicated, all debt and equity investments held by the Company (which such term “Company” shall include the Company’s consolidated subsidiaries for purposes of this Condensed Consolidated Schedule of Investments) are denominated in U.S. dollars. As of June 30, 2026, the Company had investments denominated in Canadian Dollars (CAD), Euros (EUR), British Pounds (GBP), Danish Krone (DKK), Swedish Krona (SEK), Norwegian Krone (NOK), and Australian Dollars (AUD). All debt investments are income producing unless otherwise indicated. All equity investments are non-income producing unless otherwise noted. Certain portfolio company investments are subject to contractual restrictions on sales. The total par amount (in thousands) is presented for debt investments, while the number of shares or units (in whole amounts) owned is presented for equity investments. Each of the Company’s investments is pledged as collateral, under one or more of its credit facilities unless otherwise indicated.
[3] All securities are exempt from registration under the Securities Act of 1933, as amended (the “Securities Act”), excluding Axsome Therapeutics, Inc. - Common Stock, and may be deemed to be “restricted securities.” As of December 31, 2025, the aggregate fair value of these securities is $14,206.9 million or 227.48% of the Company’s net assets. The initial acquisition dates have been included for such securities.
[4] Unless otherwise indicated, all debt and equity investments held by the Company (which such term “Company” shall include the Company’s consolidated subsidiaries for purposes of this Condensed Consolidated Schedule of Investments) are denominated in U.S. dollars. As of December 31, 2025, the Company had investments denominated in Canadian Dollars (CAD), Euros (EUR), British Pounds (GBP), Danish Krone (DKK), Swedish Krona (SEK), Norwegian Krone (NOK), and Australian Dollars (AUD). All debt investments are income producing unless otherwise indicated. All equity investments are non-income producing unless otherwise noted. Certain portfolio company investments are subject to contractual restrictions on sales. The total par amount (in thousands) is presented for debt investments, while the number of shares or units (in whole amounts) owned is presented for equity investments. Each of the Company’s investments is pledged as collateral, under one or more of its credit facilities unless otherwise indicated.
[5] The interest rate floor on these investments as of June 30, 2026 was 0.75%.
[6] The investment is not a Qualifying Asset under Section 55(a) of the Investment Company Act of 1940, as amended (together with the rules and regulations promulgated thereunder, the “1940 Act”). The Company may not acquire any non-qualifying asset unless, at the time of acquisition, Qualifying Assets represent at least 70% of the Company’s total assets. As of June 30, 2026, non-qualifying assets represented 18.6% of total assets as calculated in accordance with regulatory requirements.
[7] These investments are not pledged as collateral under any of the Company’s credit facilities. For other debt investments that are pledged to the Company’s credit facilities, a single investment may be divided into parts that are individually pledged as collateral to separate credit facilities. Any other debt investments listed above are pledged to financing facilities and are not available to satisfy the creditors of the Company.
[8] These investments were valued using unobservable inputs and are considered Level 3 investments. Fair value was determined in good faith by or under the direction of the Board of Trustees (see Note 2), pursuant to the Company’s valuation policy.
[9] The interest rate floor on these investments as of December 31, 2025 was 0.75%.
[10] The investment is not a Qualifying Asset under Section 55(a) of the Investment Company Act of 1940, as amended (together with the rules and regulations promulgated thereunder, the “1940 Act”). The Company may not acquire any non-qualifying asset unless, at the time of acquisition, Qualifying Assets represent at least 70% of the Company’s total assets. As of December 31, 2025, non-qualifying assets represented 17.2% of total assets as calculated in accordance with regulatory requirements.
[11] These investments are not pledged as collateral under any of the Company’s credit facilities. For other debt investments that are pledged to the Company’s credit facilities, a single investment may be divided into parts that are individually pledged as collateral to separate credit facilities. Any other debt investments listed above are pledged to financing facilities and are not available to satisfy the creditors of the Company.
[12] These investments were valued using unobservable inputs and are considered Level 3 investments. Fair value was determined in good faith by or under the direction of the Board of Trustees (see Note 2), pursuant to the Company’s valuation policy.
[13] Position or portion thereof is an unfunded commitment, and no interest is being earned on the unfunded portion, although the investment may be subject to unused commitment fees. Negative cost and fair value results from unamortized fees, which are capitalized to the investment cost. The unfunded commitment may be subject to a commitment termination date that may expire prior to the maturity date stated. See below for more information on the Company’s unfunded commitments:
[14] Position or portion thereof is an unfunded commitment, and no interest is being earned on the unfunded portion, although the investment may be subject to unused commitment fees. Negative cost and fair value results from unamortized fees, which are capitalized to the investment cost. The unfunded commitment may be subject to a commitment termination date that may expire prior to the maturity date stated. See below for more information on the Company’s unfunded commitments:
[15] The interest rate floor on these investments as of June 30, 2026 was 1.00%.
[16] The interest rate floor on these investments as of December 31, 2025 was 1.00%.
[17] There are no interest rate floors on these investments.
[18] There are no interest rate floors on these investments.
[19] The interest rate floor on these investments as of June 30, 2026 was 0.50%.
[20] The interest rate floor on these investments as of December 31, 2025 was 0.50%.
[21] Under the 1940 Act, the Company is generally deemed to “control” a portfolio company if the Company owns more than 25% of its outstanding voting securities and/or held the power to exercise control over the management or policies of the portfolio company. Under the 1940 Act, the Company is generally deemed an “affiliated person” of a portfolio company if the Company owns 5% or more of the portfolio company’s outstanding voting securities. As of June 30, 2026, the Company’s non-controlled/affiliated investments were as follows:
[22] Under the 1940 Act, the Company would be deemed to “control” a portfolio company if the Company owned more than 25% of its outstanding voting securities and/or held the power to exercise control over the management or policies of the portfolio company. Under the 1940 Act, the Company would be deemed an “affiliated person” of a portfolio company if the Company owns 5% or more of the portfolio company’s outstanding voting securities. As of December 31, 2025, the Company’s non-controlled/affiliated investments were as follows:
Fair Value as of December 31, 2024
Gross AdditionsGross ReductionsNet Change in Unrealized Gains (Losses)Net Realized Gain (Loss)
Fair Value as of December 31, 2025
Dividend and Interest Income
Non-controlled/affiliated Investments
Align Precision Group, LLC$— $8,762 $— $— $— $8,762 $465 
Align Precision Group, LLC— 1,366 (3)7 — 1,370 106 
Align Precision Group, LLC - Class A-3 Units— 384 — 1,165 — 1,549 — 
Blackstone Donegal Holdings LP - LP Interests (Westland Insurance Group LTD) 6,403 — — (1,088)— 5,315 — 
Material Holdings, LLC21,547 931 (297)(107)— 22,074 2,612 
Material Holdings, LLC1,397 141 — (1,538)— — — 
Material Holdings, LLC— 726 — (1)— 725 12 
Material+ Holding Company, LLC - Class C Units— — — — — — — 
Total$29,347 $12,310 $(300)$(1,562)$— $39,795 $3,195 
[23] Loan was on non-accrual status as of June 30, 2026.
[24] These loans are “last-out” portions of loans. The “last-out” portion of the Company’s loan investment generally earns a higher interest rate than the “first-out” portion, and in exchange the “first-out” portion would generally receive priority with respect to payment principal, interest and any other amounts due thereunder over the “last-out” portion.
[25] Loan was on non-accrual status as of December 31, 2025.
[26] These loans are “last-out” portions of loans. The “last-out” portion of the Company’s loan investment generally earns a higher interest rate than the “first-out” portion, and in exchange the “first-out” portion would generally receive priority with respect to payment principal, interest and any other amounts due thereunder over the “last-out” portion.
[27] The cost represents the original cost adjusted for the amortization of discounts and premiums, as applicable, on debt investments using the effective interest method in accordance with accounting principles generally accepted in the United States of America (“GAAP”).
[28] The interest rate floor on these investments as of June 30, 2026 was 2.00%.
[29] The interest rate floor on these investments as of December 31, 2025 was 2.00%.
[30] The interest rate floor on these investments as of December 31, 2025 was 3.00%.