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SEC Schedule, Article 12-14, Investments in and Advances to Affiliates (Details) - USD ($)
$ in Thousands
9 Months Ended
Jun. 30, 2026
Sep. 30, 2025
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1] $ 6,899,031  
Fair Value at June 30, 2026 $ 6,796,814  
% of Net Assets 158.89% 151.90%
Control Investments    
Investments in and Advances to Affiliates, Activity [Line Items]    
Net Realized Gain (Loss) $ 0  
Amount of Interest, Fees or Dividends Credited in Income 0  
Fair Value at October 1, 2025 0  
Gross Additions 13,148  
Gross Reductions 0  
Fair Value at June 30, 2026 [2],[3] $ 13,148  
% of Net Assets 0.30%  
Investment, Identifier [Axis]: 107-109 Beech OAK22 LLC, First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5] $ 10,138  
Investment, Identifier [Axis]: 1261229 BC LTD | Pharmaceuticals | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8] 26,655  
Investment, Identifier [Axis]: 1261229 BC LTD | Pharmaceuticals | Fixed Rate Bond    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7] 22,500  
Investment, Identifier [Axis]: 1261229 BC LTD, First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[9],[10] 47,099  
Investment, Identifier [Axis]: 1261229 BC LTD, Fixed Rate Bond    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[9] 22,774  
Investment, Identifier [Axis]: 1440 Foods Topco, LLC | Packaged Foods & Meats | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8] 45,500  
Investment, Identifier [Axis]: 1440 Foods Topco, LLC, First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[10] 60,694  
Investment, Identifier [Axis]: ACESO Holding 4 S.A.R.L. | Health Care Services | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 8,630  
Investment, Identifier [Axis]: ACESO Holding 4 S.A.R.L. | Health Care Services | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 40,349  
Investment, Identifier [Axis]: ACESO Holding 4 S.A.R.L. | Health Care Services | First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 34,523  
Investment, Identifier [Axis]: ACESO Holding 4 S.A.R.L., First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 9,814  
Investment, Identifier [Axis]: ACESO Holding 4 S.A.R.L., First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 39,258  
Investment, Identifier [Axis]: ACESO Holding 4 S.a.r.l., First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 45,883  
Investment, Identifier [Axis]: ACP Falcon Buyer Inc | Systems Software | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (14)  
Investment, Identifier [Axis]: ACP Falcon Buyer Inc | Systems Software | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 33,712  
Investment, Identifier [Axis]: ACP Falcon Buyer Inc, First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 0  
Investment, Identifier [Axis]: ACP Falcon Buyer Inc, First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 34,060  
Investment, Identifier [Axis]: ADC Therapeutics SA | Biotechnology | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 10,351  
Investment, Identifier [Axis]: ADC Therapeutics SA | Biotechnology | Warrants    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[11],[13] 1  
Investment, Identifier [Axis]: ADC Therapeutics SA, First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 10,251  
Investment, Identifier [Axis]: ADC Therapeutics SA, Warrants    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[14] 54  
Investment, Identifier [Axis]: AIP RD Buyer Corp. | Distributors | Common Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[11],[13] 591  
Investment, Identifier [Axis]: AIP RD Buyer Corp., Common Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[14] 800  
Investment, Identifier [Axis]: AMC Entertainment Holdings Inc | Movies & Entertainment | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8] 6,363  
Investment, Identifier [Axis]: ASP Integrity Acquisition Co LLC | Diversified Support Services | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 7,116  
Investment, Identifier [Axis]: ASP Integrity Acquisition Co LLC | Diversified Support Services | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 45,741  
Investment, Identifier [Axis]: ASP Integrity Acquisition Co LLC | Diversified Support Services | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] (128)  
Investment, Identifier [Axis]: ASP Integrity Acquisition Co LLC, First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 715  
Investment, Identifier [Axis]: ASP Integrity Acquisition Co LLC, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (251)  
Investment, Identifier [Axis]: ASP Integrity Acquisition Co LLC, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 46,126  
Investment, Identifier [Axis]: ASP-R-PAC Acquisition Co LLC, First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[9],[10] 427  
Investment, Identifier [Axis]: ASP-R-PAC Acquisition Co LLC, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 974  
Investment, Identifier [Axis]: ASP-R-PAC Acquisition Co LLC, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 4,696  
Investment, Identifier [Axis]: AVSC Holding Corp. | Specialized Consumer Services | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 1,096  
Investment, Identifier [Axis]: AVSC Holding Corp. | Specialized Consumer Services | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 94,302  
Investment, Identifier [Axis]: AVSC Holding Corp., First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (228)  
Investment, Identifier [Axis]: AVSC Holding Corp., First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 119,075  
Investment, Identifier [Axis]: Access CIG, LLC | Diversified Support Services | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8] 15,328  
Investment, Identifier [Axis]: Access CIG, LLC, First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[10] 46,431  
Investment, Identifier [Axis]: Acquia Inc. | Application Software | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 10,785  
Investment, Identifier [Axis]: Acquia Inc., First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 11,166  
Investment, Identifier [Axis]: American Auto Auction Group, LLC, First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[10] 23,113  
Investment, Identifier [Axis]: Arches Buyer Inc. | Interactive Media & Services | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 92,083  
Investment, Identifier [Axis]: Arches Buyer Inc., First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 92,790  
Investment, Identifier [Axis]: Artera Services, LLC | Construction & Engineering | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7] 47,133  
Investment, Identifier [Axis]: Artera Services, LLC | Construction & Engineering | Fixed Rate Bond    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8] 22,715  
Investment, Identifier [Axis]: Artera Services, LLC, First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[10] 48,062  
Investment, Identifier [Axis]: Artera Services, LLC, Fixed Rate Bond    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1] 22,319  
Investment, Identifier [Axis]: Astra Acquisition Corp., First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10],[15] 2,935  
Investment, Identifier [Axis]: Astra Acquisition Corp., First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10],[15] 0  
Investment, Identifier [Axis]: Asurion, LLC, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[10] 25,457  
Investment, Identifier [Axis]: Asurion, LLC, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[10] 33,839  
Investment, Identifier [Axis]: Asurion, LLC, First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[10] 18,608  
Investment, Identifier [Axis]: Atlas Borrower, LLC | Health Care Services | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (173)  
Investment, Identifier [Axis]: Atlas Borrower, LLC | Health Care Services | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 53,553  
Investment, Identifier [Axis]: Atlas Borrower, LLC, First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (97)  
Investment, Identifier [Axis]: Atlas Borrower, LLC, First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 57,571  
Investment, Identifier [Axis]: Auctane Holdings, LLC | Air Freight & Logistics | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 74,901  
Investment, Identifier [Axis]: Aurelia Netherlands B.V. | Interactive Media & Services | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 102,307  
Investment, Identifier [Axis]: Aurelia Netherlands B.V., First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 116,216  
Investment, Identifier [Axis]: Aurora Lux Finco S.A.R.L | Application Software | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8] 18,236  
Investment, Identifier [Axis]: Aurora Lux Finco S.A.R.L, First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[9],[10] 39,400  
Investment, Identifier [Axis]: BOTA BIDCO GMBH | Diversified Chemicals | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 7,709  
Investment, Identifier [Axis]: BOTA BIDCO GMBH | Diversified Chemicals | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 31,391  
Investment, Identifier [Axis]: BOTA BIDCO GMBH, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 10,256  
Investment, Identifier [Axis]: BOTA BIDCO GMBH, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 40,275  
Investment, Identifier [Axis]: Ballyrock CLO 19, CLO Notes    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[9],[10] 2,230  
Investment, Identifier [Axis]: Bamboo IDE8 Insurance Services, LLC | Property & Casualty Insurance | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (33)  
Investment, Identifier [Axis]: Bamboo IDE8 Insurance Services, LLC | Property & Casualty Insurance | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 47,367  
Investment, Identifier [Axis]: Bamboo US Bidco LLC | Health Care Equipment | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 1,742  
Investment, Identifier [Axis]: Bamboo US Bidco LLC | Health Care Equipment | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 3,177  
Investment, Identifier [Axis]: Bamboo US Bidco LLC | Health Care Equipment | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 3,193  
Investment, Identifier [Axis]: Bamboo US Bidco LLC | Health Care Equipment | First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 3,797  
Investment, Identifier [Axis]: Bamboo US Bidco LLC | Health Care Equipment | First Lien Term Loan 4    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 24,823  
Investment, Identifier [Axis]: Bamboo US Bidco LLC | Health Care Equipment | First Lien Term Loan 5    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 17,657  
Investment, Identifier [Axis]: Bamboo US Bidco LLC, First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (52)  
Investment, Identifier [Axis]: Bamboo US Bidco LLC, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 2,965  
Investment, Identifier [Axis]: Bamboo US Bidco LLC, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (33)  
Investment, Identifier [Axis]: Bamboo US Bidco LLC, First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 3,845  
Investment, Identifier [Axis]: Bamboo US Bidco LLC, First Lien Term Loan 4    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 25,134  
Investment, Identifier [Axis]: Bamboo US Bidco LLC, First Lien Term Loan 5    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 18,375  
Investment, Identifier [Axis]: Barracuda Parent, LLC | Systems Software | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 40,698  
Investment, Identifier [Axis]: Barracuda Parent, LLC, First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 46,808  
Investment, Identifier [Axis]: Bayou Intermediate II, LLC | Health Care Supplies | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 2,700  
Investment, Identifier [Axis]: Bayou Intermediate II, LLC | Health Care Supplies | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 8,153  
Investment, Identifier [Axis]: Bayou Intermediate II, LLC | Health Care Supplies | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 38,419  
Investment, Identifier [Axis]: Bayou Intermediate II, LLC, First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (56)  
Investment, Identifier [Axis]: Bayou Intermediate II, LLC, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 38,368  
Investment, Identifier [Axis]: Bayou Intermediate II, LLC, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (53)  
Investment, Identifier [Axis]: Beach Acquisition Bidco LLC, Fixed Rate Bond    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1] 34,219  
Investment, Identifier [Axis]: BioXcel Therapeutics, Inc. | Pharmaceuticals | Common Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[11],[13] 102  
Investment, Identifier [Axis]: BioXcel Therapeutics, Inc. | Pharmaceuticals | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[11] 2,790  
Investment, Identifier [Axis]: BioXcel Therapeutics, Inc. | Pharmaceuticals | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[11] 1,156  
Investment, Identifier [Axis]: BioXcel Therapeutics, Inc. | Pharmaceuticals | Warrants 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[11],[13] 0  
Investment, Identifier [Axis]: BioXcel Therapeutics, Inc. | Pharmaceuticals | Warrants 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[11],[13] 0  
Investment, Identifier [Axis]: BioXcel Therapeutics, Inc., Common Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[9],[14] 33  
Investment, Identifier [Axis]: BioXcel Therapeutics, Inc., First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9] 1,285  
Investment, Identifier [Axis]: BioXcel Therapeutics, Inc., First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9] 3,100  
Investment, Identifier [Axis]: BioXcel Therapeutics, Inc., First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[9] 0  
Investment, Identifier [Axis]: BioXcel Therapeutics, Inc., First Lien Term Loan 4    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[9] 0  
Investment, Identifier [Axis]: BioXcel Therapeutics, Inc., Warrants 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[14] 1  
Investment, Identifier [Axis]: BioXcel Therapeutics, Inc., Warrants 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[14] 0  
Investment, Identifier [Axis]: Biscuit Parent, LLC | Application Software | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 0  
Investment, Identifier [Axis]: Biscuit Parent, LLC | Application Software | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 32,453  
Investment, Identifier [Axis]: Biscuit Parent, LLC | Application Software | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 60,383  
Investment, Identifier [Axis]: Biscuit Parent, LLC | Application Software | First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 0  
Investment, Identifier [Axis]: Biscuit Parent, LLC, First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 0  
Investment, Identifier [Axis]: Biscuit Parent, LLC, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 479  
Investment, Identifier [Axis]: Biscuit Parent, LLC, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 32,701  
Investment, Identifier [Axis]: Biscuit Parent, LLC, First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 49,375  
Investment, Identifier [Axis]: Blazing Star Parent, LLC | Drug Retail | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 82,973  
Investment, Identifier [Axis]: Blazing Star Parent, LLC, First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 84,282  
Investment, Identifier [Axis]: Blue Bidco Ltd | Wireless Telecommunication Services | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11],[12] 2,698  
Investment, Identifier [Axis]: Blue Bidco Ltd | Wireless Telecommunication Services | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11],[12] 710  
Investment, Identifier [Axis]: Blue Bidco Ltd | Wireless Telecommunication Services | First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 964  
Investment, Identifier [Axis]: Blue Bidco Ltd | Wireless Telecommunication Services | First Lien Term Loan 4    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 3,749  
Investment, Identifier [Axis]: Blue Bidco Ltd | Wireless Telecommunication Services | First Lien Term Loan 5    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 6,594  
Investment, Identifier [Axis]: Blue Bidco Ltd, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[9],[10] 3,355  
Investment, Identifier [Axis]: Blue Bidco Ltd, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 6,512  
Investment, Identifier [Axis]: Blue Bidco Ltd, First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 1,629  
Investment, Identifier [Axis]: Blue Bidco Ltd, First Lien Term Loan 4    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 11,305  
Investment, Identifier [Axis]: Buttercup 2023-1 LLC | Specialized Finance | CLO Notes    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 14,950  
Investment, Identifier [Axis]: CD&R Firefly Bidco Limited, First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[9],[10] 31,141  
Investment, Identifier [Axis]: Centralsquare Technologies, LLC | Application Software | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (84)  
Investment, Identifier [Axis]: Centralsquare Technologies, LLC | Application Software | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 30,046  
Investment, Identifier [Axis]: Centralsquare Technologies, LLC, First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (3)  
Investment, Identifier [Axis]: Centralsquare Technologies, LLC, First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 30,906  
Investment, Identifier [Axis]: Cielo Bidco Limited | Building Products | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11],[12] 3,654  
Investment, Identifier [Axis]: Cielo Bidco Limited | Building Products | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 8,883  
Investment, Identifier [Axis]: Cielo Bidco Limited | Building Products | First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 44,398  
Investment, Identifier [Axis]: Cielo Bidco Limited, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[9],[10] (56)  
Investment, Identifier [Axis]: Cielo Bidco Limited, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 52,630  
Investment, Identifier [Axis]: Cielo Bidco Limited, First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 10,670  
Investment, Identifier [Axis]: Cloud Software Group, Inc., First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[10] 13,998  
Investment, Identifier [Axis]: Colony Holding Corporation, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 3,796  
Investment, Identifier [Axis]: Colony Holding Corporation, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 11,672  
Investment, Identifier [Axis]: Condor Merger Sub Inc., Fixed Rate Bond    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1] 20,690  
Investment, Identifier [Axis]: Connect Holding II LLC | Alternative Carriers | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8] 36,027  
Investment, Identifier [Axis]: Connect Holding II LLC | Alternative Carriers | Fixed Rate Bond    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7] 6,298  
Investment, Identifier [Axis]: Connect Holding II LLC, First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[10] 33,571  
Investment, Identifier [Axis]: Connect Holding II LLC, Fixed Rate Bond    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1] 12,030  
Investment, Identifier [Axis]: CoreRx, Inc., First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 18,282  
Investment, Identifier [Axis]: Coupa Holdings, LLC | Application Software | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 590  
Investment, Identifier [Axis]: Coupa Holdings, LLC | Application Software | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 1,172  
Investment, Identifier [Axis]: Coupa Holdings, LLC | Application Software | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 12,865  
Investment, Identifier [Axis]: Coupa Holdings, LLC, First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 0  
Investment, Identifier [Axis]: Coupa Holdings, LLC, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 0  
Investment, Identifier [Axis]: Coupa Holdings, LLC, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 13,296  
Investment, Identifier [Axis]: Creek Parent, Inc. | Life Sciences Tools & Services | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (226)  
Investment, Identifier [Axis]: Creek Parent, Inc. | Life Sciences Tools & Services | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 103,592  
Investment, Identifier [Axis]: Creek Parent, Inc., First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (290)  
Investment, Identifier [Axis]: Creek Parent, Inc., First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 103,944  
Investment, Identifier [Axis]: Crewline Buyer, Inc. | Application Software | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (229)  
Investment, Identifier [Axis]: Crewline Buyer, Inc. | Application Software | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 2,926  
Investment, Identifier [Axis]: Crewline Buyer, Inc. | Application Software | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 41,715  
Investment, Identifier [Axis]: Crewline Buyer, Inc., First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (46)  
Investment, Identifier [Axis]: Crewline Buyer, Inc., First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 3,049  
Investment, Identifier [Axis]: Crewline Buyer, Inc., First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 43,472  
Investment, Identifier [Axis]: DTI Holdco, Inc., First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[10] 50,572  
Investment, Identifier [Axis]: Dealer Tire Financial, LLC | Distributors | Fixed Rate Bond    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7] 19,631  
Investment, Identifier [Axis]: Dealer Tire Financial, LLC, Fixed Rate Bond    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1] 40,936  
Investment, Identifier [Axis]: Delta Leasing SPV II LLC | Specialized Finance | Common Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[11],[13] 0  
Investment, Identifier [Axis]: Delta Leasing SPV II LLC | Specialized Finance | Preferred Equity    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[11],[13] 468  
Investment, Identifier [Axis]: Delta Leasing SPV II LLC | Specialized Finance | Subordinated Debt Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[11] 25,523  
Investment, Identifier [Axis]: Delta Leasing SPV II LLC | Specialized Finance | Subordinated Debt Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[11] 40,361  
Investment, Identifier [Axis]: Delta Leasing SPV II LLC | Specialized Finance | Warrants    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[11],[13] 0  
Investment, Identifier [Axis]: Delta Leasing SPV II LLC, Common Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[14] 2  
Investment, Identifier [Axis]: Delta Leasing SPV II LLC, Preferred Equity    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[14] 468  
Investment, Identifier [Axis]: Delta Leasing SPV II LLC, Subordinated Debt Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9] 29,046  
Investment, Identifier [Axis]: Delta Leasing SPV II LLC, Subordinated Debt Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9] 39,466  
Investment, Identifier [Axis]: Delta Leasing SPV II LLC, Warrants    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[14] 0  
Investment, Identifier [Axis]: Digicel International Finance Ltd / Difl US LLC | Wireless Telecommunication Services | Fixed Rate Bond    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7] 4,902  
Investment, Identifier [Axis]: Digicel International Finance Ltd / Difl US LLC, Fixed Rate Bond    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[9] 4,894  
Investment, Identifier [Axis]: DirecTV Financing, LLC | Cable & Satellite | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7] 11,974  
Investment, Identifier [Axis]: DirecTV Financing, LLC | Cable & Satellite | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8] 16,751  
Investment, Identifier [Axis]: DirecTV Financing, LLC | Cable & Satellite | Fixed Rate Bond    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7] 21,711  
Investment, Identifier [Axis]: DirecTV Financing, LLC, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[10] 201  
Investment, Identifier [Axis]: DirecTV Financing, LLC, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[10] 26,992  
Investment, Identifier [Axis]: DirecTV Financing, LLC, First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1] 19,759  
Investment, Identifier [Axis]: DirecTV Financing, LLC, Fixed Rate Bond    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1] 21,183  
Investment, Identifier [Axis]: Draken International, LLC | Aerospace & Defense | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 17,288  
Investment, Identifier [Axis]: Draken International, LLC | Aerospace & Defense | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 13,497  
Investment, Identifier [Axis]: Draken International, LLC | Aerospace & Defense | First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 72,211  
Investment, Identifier [Axis]: Draken International, LLC, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[9],[10] (202)  
Investment, Identifier [Axis]: Draken International, LLC, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 18,506  
Investment, Identifier [Axis]: Draken International, LLC, First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 78,390  
Investment, Identifier [Axis]: Dukes Root Control Inc. | Environmental & Facilities Services | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 0  
Investment, Identifier [Axis]: Dukes Root Control Inc. | Environmental & Facilities Services | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 1,031  
Investment, Identifier [Axis]: Dukes Root Control Inc. | Environmental & Facilities Services | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 1,913  
Investment, Identifier [Axis]: Dukes Root Control Inc. | Environmental & Facilities Services | First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 16,992  
Investment, Identifier [Axis]: Dukes Root Control Inc., First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 171  
Investment, Identifier [Axis]: Dukes Root Control Inc., First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 1,032  
Investment, Identifier [Axis]: Dukes Root Control Inc., First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 1,915  
Investment, Identifier [Axis]: Dukes Root Control Inc., First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 17,011  
Investment, Identifier [Axis]: Empire Bidco AB | Life Sciences Tools & Services | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 32,402  
Investment, Identifier [Axis]: Empire Bidco AB | Life Sciences Tools & Services | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] (357)  
Investment, Identifier [Axis]: Empire Bidco AB | Life Sciences Tools & Services | First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 32,273  
Investment, Identifier [Axis]: Empire Bidco AB, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 35,665  
Investment, Identifier [Axis]: Empire Bidco AB, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 36,334  
Investment, Identifier [Axis]: Empire Bidco AB, First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[9],[10] (450)  
Investment, Identifier [Axis]: Engineering Research And Consulting LLC, First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[10] 30,867  
Investment, Identifier [Axis]: Engineering Research and Consulting LLC | Construction & Engineering | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8] 26,708  
Investment, Identifier [Axis]: Enverus Holdings, Inc. | Application Software | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 157  
Investment, Identifier [Axis]: Enverus Holdings, Inc. | Application Software | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (53)  
Investment, Identifier [Axis]: Enverus Holdings, Inc. | Application Software | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 63,751  
Investment, Identifier [Axis]: Enverus Holdings, Inc., First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 175  
Investment, Identifier [Axis]: Enverus Holdings, Inc., First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 0  
Investment, Identifier [Axis]: Enverus Holdings, Inc., First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 55,339  
Investment, Identifier [Axis]: Establishment Labs Holdings Inc. | Health Care Equipment | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[11] 68,971  
Investment, Identifier [Axis]: Establishment Labs Holdings Inc., First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9] 1,842  
Investment, Identifier [Axis]: Establishment Labs Holdings Inc., First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9] 1,723  
Investment, Identifier [Axis]: Establishment Labs Holdings Inc., First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9] 1,723  
Investment, Identifier [Axis]: Establishment Labs Holdings Inc., First Lien Term Loan 4    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9] 11,501  
Investment, Identifier [Axis]: Everbridge, Inc. | Application Software | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (79)  
Investment, Identifier [Axis]: Everbridge, Inc. | Application Software | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 7,426  
Investment, Identifier [Axis]: Everbridge, Inc. | Application Software | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 76,994  
Investment, Identifier [Axis]: Everbridge, Inc., First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 0  
Investment, Identifier [Axis]: Everbridge, Inc., First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 7,681  
Investment, Identifier [Axis]: Everbridge, Inc., First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 78,364  
Investment, Identifier [Axis]: Evergreen IX Borrower 2023, LLC | Application Software | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (27)  
Investment, Identifier [Axis]: Evergreen IX Borrower 2023, LLC | Application Software | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 8,871  
Investment, Identifier [Axis]: Evergreen IX Borrower 2023, LLC | Application Software | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 35,136  
Investment, Identifier [Axis]: Evergreen IX Borrower 2023, LLC, First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 0  
Investment, Identifier [Axis]: Evergreen IX Borrower 2023, LLC, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 9,006  
Investment, Identifier [Axis]: Evergreen IX Borrower 2023, LLC, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 35,671  
Investment, Identifier [Axis]: Eyesouth Eye Care Holdco LLC | Health Care Services | Common Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[11],[13] 1,140  
Investment, Identifier [Axis]: Eyesouth Eye Care Holdco LLC | Health Care Services | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 4,759  
Investment, Identifier [Axis]: Eyesouth Eye Care Holdco LLC | Health Care Services | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 3,129  
Investment, Identifier [Axis]: Eyesouth Eye Care Holdco LLC, Common Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[14] 1,019  
Investment, Identifier [Axis]: Eyesouth Eye Care Holdco LLC, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 3,134  
Investment, Identifier [Axis]: Eyesouth Eye Care Holdco LLC, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 2,696  
Investment, Identifier [Axis]: F&M BUYER LLC, First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (35)  
Investment, Identifier [Axis]: F&M BUYER LLC, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (40)  
Investment, Identifier [Axis]: F&M BUYER LLC, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 23,627  
Investment, Identifier [Axis]: F&M Buyer LLC | Systems Software | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (87)  
Investment, Identifier [Axis]: F&M Buyer LLC | Systems Software | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 23,269  
Investment, Identifier [Axis]: F&M Buyer LLC | Systems Software | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (40)  
Investment, Identifier [Axis]: Fairbridge Credit LLC | Real Estate Services | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[11] 2,167  
Investment, Identifier [Axis]: Fiber Intermediate Holdings, LLC | Alternative Carriers | Second Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 78,058  
Investment, Identifier [Axis]: Finastra USA, Inc., First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 12,067  
Investment, Identifier [Axis]: Flexera Software LLC | Application Software | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (125)  
Investment, Identifier [Axis]: Flexera Software LLC | Application Software | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 11,211  
Investment, Identifier [Axis]: Flexera Software LLC | Application Software | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 39,143  
Investment, Identifier [Axis]: Flexera Software LLC | Application Software | First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 13,506  
Investment, Identifier [Axis]: Flexera Software LLC, First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (7)  
Investment, Identifier [Axis]: Flexera Software LLC, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 14,425  
Investment, Identifier [Axis]: Flexera Software LLC, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 40,680  
Investment, Identifier [Axis]: Formulations Parent Corp, First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 17,400  
Investment, Identifier [Axis]: Fortress Credit BSL XV | Multi-Sector Holdings | CLO Notes 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8] 4,979  
Investment, Identifier [Axis]: Fortress Credit BSL XV | Multi-Sector Holdings | CLO Notes 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8] 5,694  
Investment, Identifier [Axis]: Fortress Credit BSL XV, CLO Notes 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[9],[10] 4,997  
Investment, Identifier [Axis]: Fortress Credit BSL XV, CLO Notes 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[9],[10] 5,933  
Investment, Identifier [Axis]: Galileo Parent, Inc., First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 8,580  
Investment, Identifier [Axis]: Galileo Parent, Inc., First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 82,566  
Investment, Identifier [Axis]: Gallatin CLO X 2023-1, CLO Notes    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[9],[10] 5,021  
Investment, Identifier [Axis]: Geo Topco Corporation | Building Products | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 1,741  
Investment, Identifier [Axis]: Geo Topco Corporation | Building Products | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 11,545  
Investment, Identifier [Axis]: Geo Topco Corporation | Building Products | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 55,610  
Investment, Identifier [Axis]: Geo Topco Corporation, First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 1,768  
Investment, Identifier [Axis]: Geo Topco Corporation, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 10,056  
Investment, Identifier [Axis]: Geo Topco Corporation, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 55,801  
Investment, Identifier [Axis]: Grand River Aseptic Manufacturing, Inc. | Health Care Equipment | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (88)  
Investment, Identifier [Axis]: Grand River Aseptic Manufacturing, Inc. | Health Care Equipment | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 29,737  
Investment, Identifier [Axis]: Grand River Aseptic Manufacturing, Inc., First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (95)  
Investment, Identifier [Axis]: Grand River Aseptic Manufacturing, Inc., First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 29,713  
Investment, Identifier [Axis]: Greenway Health, LLC | Health Care Technology | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 23,998  
Investment, Identifier [Axis]: Greenway Health, LLC, First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 24,625  
Investment, Identifier [Axis]: Grove Hotel Parcel Owner, LLC | Hotels, Resorts & Cruise Lines | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 784  
Investment, Identifier [Axis]: Grove Hotel Parcel Owner, LLC | Hotels, Resorts & Cruise Lines | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 3,336  
Investment, Identifier [Axis]: Grove Hotel Parcel Owner, LLC | Hotels, Resorts & Cruise Lines | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 16,052  
Investment, Identifier [Axis]: Grove Hotel Parcel Owner, LLC, First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (47)  
Investment, Identifier [Axis]: Grove Hotel Parcel Owner, LLC, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 3,443  
Investment, Identifier [Axis]: Grove Hotel Parcel Owner, LLC, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 16,699  
Investment, Identifier [Axis]: HAH Group Holding Co LLC | Health Care Services | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8] 8,284  
Investment, Identifier [Axis]: HAH Group Holding Co LLC | Health Care Services | Fixed Rate Bond    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7] 10,362  
Investment, Identifier [Axis]: HAH Group Holding Co LLC, First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1] 8,496  
Investment, Identifier [Axis]: HAH Group Holding Co LLC, Fixed Rate Bond    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1] 6,314  
Investment, Identifier [Axis]: Harbor Purchaser Inc. | Education Services | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8] 32,678  
Investment, Identifier [Axis]: Harbor Purchaser Inc., First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[10] 35,765  
Investment, Identifier [Axis]: Harrow Health, Inc., Fixed Rate Bond    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[9] 8,013  
Investment, Identifier [Axis]: Hertz Vehicle Financing III | Specialized Finance | Subordinated Debt Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[11] 85,273  
Investment, Identifier [Axis]: Hertz Vehicle Financing III, Subordinated Debt Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9] 85,710  
Investment, Identifier [Axis]: Hologic, Inc. | Health Care Equipment | Second Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 51,762  
Investment, Identifier [Axis]: IAMGOLD Corporation, Second Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 22,105  
Investment, Identifier [Axis]: IDF 14 FinanceCo, LLC | Internet Services & Infrastructure | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 14,434  
Investment, Identifier [Axis]: IDF 14 FinanceCo, LLC | Internet Services & Infrastructure | Warrants    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[11],[13] 0  
Investment, Identifier [Axis]: IW Buyer LLC | Electrical Components & Equipment | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (48)  
Investment, Identifier [Axis]: IW Buyer LLC | Electrical Components & Equipment | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 4,400  
Investment, Identifier [Axis]: IW Buyer LLC | Electrical Components & Equipment | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 18,473  
Investment, Identifier [Axis]: IW Buyer LLC | Electrical Components & Equipment | First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 32,865  
Investment, Identifier [Axis]: IW Buyer LLC, First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 1,005  
Investment, Identifier [Axis]: IW Buyer LLC, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 4,843  
Investment, Identifier [Axis]: IW Buyer LLC, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 18,699  
Investment, Identifier [Axis]: IW Buyer LLC, First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 28,175  
Investment, Identifier [Axis]: Icefall Parent, Inc. | Application Software | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (42)  
Investment, Identifier [Axis]: Icefall Parent, Inc. | Application Software | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 51,890  
Investment, Identifier [Axis]: Icefall Parent, Inc., First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 0  
Investment, Identifier [Axis]: Icefall Parent, Inc., First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 52,843  
Investment, Identifier [Axis]: Inmar Inc | Application Software | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8] 28,299  
Investment, Identifier [Axis]: Inmar Inc, First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[10] 60,527  
Investment, Identifier [Axis]: Integrity Marketing Acquisition, LLC | Insurance Brokers | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (7)  
Investment, Identifier [Axis]: Integrity Marketing Acquisition, LLC | Insurance Brokers | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 80,958  
Investment, Identifier [Axis]: Integrity Marketing Acquisition, LLC | Insurance Brokers | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (17)  
Investment, Identifier [Axis]: Integrity Marketing Acquisition, LLC, First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (9)  
Investment, Identifier [Axis]: Integrity Marketing Acquisition, LLC, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (25)  
Investment, Identifier [Axis]: Integrity Marketing Acquisition, LLC, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 79,654  
Investment, Identifier [Axis]: Intralot Capital Luxembourg S.A. | Casinos & Gaming | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 54,103  
Investment, Identifier [Axis]: Inventus Power, Inc. | Electrical Components & Equipment | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 1,455  
Investment, Identifier [Axis]: Inventus Power, Inc. | Electrical Components & Equipment | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 69,060  
Investment, Identifier [Axis]: Inventus Power, Inc., First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 1,113  
Investment, Identifier [Axis]: Inventus Power, Inc., First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 42,488  
Investment, Identifier [Axis]: JN Bidco LLC | Health Care Technology | Common Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[11],[13] 6,544  
Investment, Identifier [Axis]: JN Bidco LLC, Common Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[14] 7,173  
Investment, Identifier [Axis]: Janus Bidco Limited | Application Software | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 38,626  
Investment, Identifier [Axis]: Janus Bidco Limited | Application Software | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11],[12] 0  
Investment, Identifier [Axis]: Janus Bidco Limited, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[9],[10] 0  
Investment, Identifier [Axis]: Janus Bidco Limited, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 51,970  
Investment, Identifier [Axis]: Janus Bidco Limited, First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 2,345  
Investment, Identifier [Axis]: Jeppesen Holdings, LLC | Application Software | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (86)  
Investment, Identifier [Axis]: Jeppesen Holdings, LLC | Application Software | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[16] 48,339  
Investment, Identifier [Axis]: Jonah Energy South Texas LLC | Oil & Gas Exploration & Production | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 67,836  
Investment, Identifier [Axis]: Kairos Intermediateco AB | Health Care Supplies | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11],[12] (17)  
Investment, Identifier [Axis]: Kairos Intermediateco AB | Health Care Supplies | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 35,201  
Investment, Identifier [Axis]: Kairos Intermediateco AB | Health Care Supplies | First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 15,316  
Investment, Identifier [Axis]: Kairos Intermediateco AB | Health Care Supplies | First Lien Term Loan 4    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 16,392  
Investment, Identifier [Axis]: Kairos Intermediateco AB, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[9],[10] 0  
Investment, Identifier [Axis]: Kairos Intermediateco AB, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 23,416  
Investment, Identifier [Axis]: Kairos Intermediateco AB, First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 18,404  
Investment, Identifier [Axis]: Kairos Intermediateco AB, First Lien Term Loan 4    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 17,588  
Investment, Identifier [Axis]: Kaseya Inc. | Systems Software | Second Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8] 26,787  
Investment, Identifier [Axis]: Kaseya Inc., Second Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[10] 43,901  
Investment, Identifier [Axis]: Kings Buyer, LLC | Environmental & Facilities Services | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 5,801  
Investment, Identifier [Axis]: Kings Buyer, LLC | Environmental & Facilities Services | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 54,226  
Investment, Identifier [Axis]: Kings Buyer, LLC | Environmental & Facilities Services | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 4,413  
Investment, Identifier [Axis]: Kings Buyer, LLC, First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 2,164  
Investment, Identifier [Axis]: Kings Buyer, LLC, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 55,286  
Investment, Identifier [Axis]: Kings Buyer, LLC, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 4,499  
Investment, Identifier [Axis]: Kite Midco II Inc. | Research & Consulting Services | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (65)  
Investment, Identifier [Axis]: Kite Midco II Inc. | Research & Consulting Services | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 38,709  
Investment, Identifier [Axis]: Kite Midco II Inc., First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (72)  
Investment, Identifier [Axis]: Kite Midco II Inc., First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 38,490  
Investment, Identifier [Axis]: LABL, Inc., First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[10] 23,135  
Investment, Identifier [Axis]: LDS Buyer, LLC | Air Freight & Logistics | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (72)  
Investment, Identifier [Axis]: LDS Buyer, LLC | Air Freight & Logistics | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 8,146  
Investment, Identifier [Axis]: LDS Buyer, LLC | Air Freight & Logistics | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 41,139  
Investment, Identifier [Axis]: LDS Buyer, LLC | Air Freight & Logistics | First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (124)  
Investment, Identifier [Axis]: LDS Buyer, LLC | Air Freight & Logistics | First Lien Term Loan 4    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 4,145  
Investment, Identifier [Axis]: LDS Buyer, LLC, First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (54)  
Investment, Identifier [Axis]: LDS Buyer, LLC, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 8,231  
Investment, Identifier [Axis]: LDS Buyer, LLC, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 1,848  
Investment, Identifier [Axis]: LDS Buyer, LLC, First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 41,568  
Investment, Identifier [Axis]: LDS Buyer, LLC, First Lien Term Loan 4    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (91)  
Investment, Identifier [Axis]: LSL Holdco, LLC | Health Care Distributors | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 703  
Investment, Identifier [Axis]: LSL Holdco, LLC | Health Care Distributors | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 991  
Investment, Identifier [Axis]: LSL Holdco, LLC | Health Care Distributors | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 8,511  
Investment, Identifier [Axis]: LSL Holdco, LLC, First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 651  
Investment, Identifier [Axis]: LSL Holdco, LLC, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 988  
Investment, Identifier [Axis]: LSL Holdco, LLC, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 8,480  
Investment, Identifier [Axis]: Learfield Communications, LLC, First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[10] 45,965  
Investment, Identifier [Axis]: Legends Hospitality Holding Company, LLC | Specialized Consumer Services | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 1,709  
Investment, Identifier [Axis]: Legends Hospitality Holding Company, LLC | Specialized Consumer Services | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 3,185  
Investment, Identifier [Axis]: Legends Hospitality Holding Company, LLC | Specialized Consumer Services | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 56,429  
Investment, Identifier [Axis]: Legends Hospitality Holding Company, LLC, First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 549  
Investment, Identifier [Axis]: Legends Hospitality Holding Company, LLC, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 1,968  
Investment, Identifier [Axis]: Legends Hospitality Holding Company, LLC, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 55,833  
Investment, Identifier [Axis]: Lightbox Intermediate, L.P. | Real Estate Services | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (102)  
Investment, Identifier [Axis]: Lightbox Intermediate, L.P. | Real Estate Services | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 57,299  
Investment, Identifier [Axis]: Lightbox Intermediate, L.P., First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (39)  
Investment, Identifier [Axis]: Lightbox Intermediate, L.P., First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 58,695  
Investment, Identifier [Axis]: London Buyer, LLC | Advertising | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (72)  
Investment, Identifier [Axis]: London Buyer, LLC | Advertising | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (24)  
Investment, Identifier [Axis]: London Buyer, LLC | Advertising | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 42,554  
Investment, Identifier [Axis]: M2S Group Intermediate Holdings Inc, First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[10] 52,281  
Investment, Identifier [Axis]: MHE Intermediate Holdings, LLC | Diversified Support Services | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 5,084  
Investment, Identifier [Axis]: MHE Intermediate Holdings, LLC | Diversified Support Services | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 1,004  
Investment, Identifier [Axis]: MHE Intermediate Holdings, LLC, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 5,102  
Investment, Identifier [Axis]: MHE Intermediate Holdings, LLC, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 1,000  
Investment, Identifier [Axis]: MP Midco Holdings LLC | Packaged Foods & Meats | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8] 13,001  
Investment, Identifier [Axis]: MRI Software LLC | Application Software | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 1,599  
Investment, Identifier [Axis]: MRI Software LLC | Application Software | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 4,658  
Investment, Identifier [Axis]: MRI Software LLC | Application Software | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 4,367  
Investment, Identifier [Axis]: MRI Software LLC | Application Software | First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 55,955  
Investment, Identifier [Axis]: MRI Software LLC | Application Software | First Lien Term Loan 4    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 6,846  
Investment, Identifier [Axis]: MRI Software LLC, First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 556  
Investment, Identifier [Axis]: MRI Software LLC, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 4,769  
Investment, Identifier [Axis]: MRI Software LLC, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 7,011  
Investment, Identifier [Axis]: MRI Software LLC, First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 57,307  
Investment, Identifier [Axis]: MRO Florida, Inc. | Aerospace & Defense | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11],[12] 3,223  
Investment, Identifier [Axis]: MRO Florida, Inc. | Aerospace & Defense | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 50,534  
Investment, Identifier [Axis]: McAfee Corp. | Systems Software | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8] 14,113  
Investment, Identifier [Axis]: McAfee Corp., First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[10] 19,019  
Investment, Identifier [Axis]: Merlin Parent Holdings 2026, Inc. | Cable & Satellite | Subordinated Debt Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 71,747  
Investment, Identifier [Axis]: Mesoblast, Inc. | Biotechnology | Warrants    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[11],[13] 71  
Investment, Identifier [Axis]: Mesoblast, Inc., First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9] 1,597  
Investment, Identifier [Axis]: Mesoblast, Inc., Warrants    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[14] 212  
Investment, Identifier [Axis]: Microf Funding V LLC | Consumer Finance | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11],[12] 19,804  
Investment, Identifier [Axis]: Microf Funding V LLC, First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[9],[10] 19,912  
Investment, Identifier [Axis]: Minotaur Acquisition, Inc. | Diversified Financial Services | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (38)  
Investment, Identifier [Axis]: Minotaur Acquisition, Inc. | Diversified Financial Services | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 6,879  
Investment, Identifier [Axis]: Minotaur Acquisition, Inc. | Diversified Financial Services | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 6,462  
Investment, Identifier [Axis]: Minotaur Acquisition, Inc. | Diversified Financial Services | First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 16,371  
Investment, Identifier [Axis]: Minotaur Acquisition, Inc. | Diversified Financial Services | First Lien Term Loan 4    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 40,540  
Investment, Identifier [Axis]: Minotaur Acquisition, Inc., First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[9],[10] (15)  
Investment, Identifier [Axis]: Minotaur Acquisition, Inc., First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[9],[10] (26)  
Investment, Identifier [Axis]: Minotaur Acquisition, Inc., First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 6,704  
Investment, Identifier [Axis]: Minotaur Acquisition, Inc., First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 41,060  
Investment, Identifier [Axis]: Mitchell International Inc | Application Software | Second Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8] 32,617  
Investment, Identifier [Axis]: Mitchell International Inc, First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[10] 16,933  
Investment, Identifier [Axis]: Mitchell International Inc, Second Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[10] 41,851  
Investment, Identifier [Axis]: Modena Buyer LLC | Application Software | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8] 33,610  
Investment, Identifier [Axis]: Modena Buyer LLC, First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[10] 37,747  
Investment, Identifier [Axis]: Monotype Imaging Holdings Inc. | Application Software | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (300)  
Investment, Identifier [Axis]: Monotype Imaging Holdings Inc. | Application Software | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 1,475  
Investment, Identifier [Axis]: Monotype Imaging Holdings Inc. | Application Software | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 68,123  
Investment, Identifier [Axis]: Monotype Imaging Holdings Inc., First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (11)  
Investment, Identifier [Axis]: Monotype Imaging Holdings Inc., First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 1,544  
Investment, Identifier [Axis]: Monotype Imaging Holdings Inc., First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 71,371  
Investment, Identifier [Axis]: Monroe Engineering Group LLC | Industrial Machinery & Supplies & Components | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 3,233  
Investment, Identifier [Axis]: Monroe Engineering Group LLC | Industrial Machinery & Supplies & Components | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (25)  
Investment, Identifier [Axis]: NFM & J, L.P. | Diversified Support Services | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 2,555  
Investment, Identifier [Axis]: NFM & J, L.P. | Diversified Support Services | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 1,337  
Investment, Identifier [Axis]: NFM & J, L.P. | Diversified Support Services | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 21,299  
Investment, Identifier [Axis]: NFM & J, L.P., First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 751  
Investment, Identifier [Axis]: NFM & J, L.P., First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 1,284  
Investment, Identifier [Axis]: NFM & J, L.P., First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 21,728  
Investment, Identifier [Axis]: NFO Orange Buyer LLC | Distributors | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 2,921  
Investment, Identifier [Axis]: NFO Orange Buyer LLC | Distributors | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (18)  
Investment, Identifier [Axis]: NFO Orange Buyer LLC | Distributors | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 37,323  
Investment, Identifier [Axis]: National Mentor Holdings | Health Care Services | Fixed Rate Bond    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7] 19,886  
Investment, Identifier [Axis]: Nellson Nutraceutical, LLC | Packaged Foods & Meats | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11],[12] 3,830  
Investment, Identifier [Axis]: Nellson Nutraceutical, LLC | Packaged Foods & Meats | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 47,658  
Investment, Identifier [Axis]: Nellson Nutraceutical, LLC | Packaged Foods & Meats | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11],[12] (23)  
Investment, Identifier [Axis]: Nellson Nutraceutical, LLC | Packaged Foods & Meats | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 14,148  
Investment, Identifier [Axis]: Nellson Nutraceutical, LLC, First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[9],[10] 1,236  
Investment, Identifier [Axis]: Nellson Nutraceutical, LLC, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[9],[10] (25)  
Investment, Identifier [Axis]: Nellson Nutraceutical, LLC, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 47,960  
Investment, Identifier [Axis]: Nellson Nutraceutical, LLC, First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 14,237  
Investment, Identifier [Axis]: Neptune Bidco US Inc. | Aerospace & Defense | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 30,272  
Investment, Identifier [Axis]: Neptune Bidco US Inc. | Aerospace & Defense | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 727  
Investment, Identifier [Axis]: Neptune Bidco US Inc. | Aerospace & Defense | First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (47)  
Investment, Identifier [Axis]: Neptune Bidco US Inc., First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 30,740  
Investment, Identifier [Axis]: Neptune Bidco US Inc., First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 0  
Investment, Identifier [Axis]: Next Holdco, LLC | Health Care Technology | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (34)  
Investment, Identifier [Axis]: Next Holdco, LLC | Health Care Technology | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 17,372  
Investment, Identifier [Axis]: Next Holdco, LLC | Health Care Technology | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 45,201  
Investment, Identifier [Axis]: Next Holdco, LLC, First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (40)  
Investment, Identifier [Axis]: Next Holdco, LLC, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (74)  
Investment, Identifier [Axis]: Next Holdco, LLC, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 17,486  
Investment, Identifier [Axis]: Next Holdco, LLC, First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 45,498  
Investment, Identifier [Axis]: Nexus Buyer LLC | Specialized Finance | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8] 5,631  
Investment, Identifier [Axis]: Nexus Buyer LLC | Specialized Finance | Second Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8] 29,363  
Investment, Identifier [Axis]: Nexus Buyer LLC, Second Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1] 70,653  
Investment, Identifier [Axis]: Nidda BondCo GmbH, First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[9],[10] 40,256  
Investment, Identifier [Axis]: North Star Acquisitionco, LLC | Education Services | First Lien Revolver 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11],[12] 3,484  
Investment, Identifier [Axis]: North Star Acquisitionco, LLC | Education Services | First Lien Revolver 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11],[12] (111)  
Investment, Identifier [Axis]: North Star Acquisitionco, LLC | Education Services | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 4,120  
Investment, Identifier [Axis]: North Star Acquisitionco, LLC | Education Services | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 2,909  
Investment, Identifier [Axis]: North Star Acquisitionco, LLC | Education Services | First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 24,449  
Investment, Identifier [Axis]: North Star Acquisitionco, LLC | Education Services | First Lien Term Loan 4    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 31,756  
Investment, Identifier [Axis]: North Star Acquisitionco, LLC | Education Services | First Lien Term Loan 5    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 3,659  
Investment, Identifier [Axis]: North Star Acquisitionco, LLC | Education Services | First Lien Term Loan 6    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 1,631  
Investment, Identifier [Axis]: North Star Acquisitionco, LLC | Education Services | First Lien Term Loan 7    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 6,105  
Investment, Identifier [Axis]: North Star Acquisitionco, LLC, First Lien Revolver 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[9],[10] 0  
Investment, Identifier [Axis]: North Star Acquisitionco, LLC, First Lien Revolver 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 1,657  
Investment, Identifier [Axis]: North Star Acquisitionco, LLC, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[9],[10] 6,214  
Investment, Identifier [Axis]: North Star Acquisitionco, LLC, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 3,313  
Investment, Identifier [Axis]: North Star Acquisitionco, LLC, First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 4,227  
Investment, Identifier [Axis]: North Star Acquisitionco, LLC, First Lien Term Loan 4    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 36,168  
Investment, Identifier [Axis]: North Star Acquisitionco, LLC, First Lien Term Loan 5    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 6,896  
Investment, Identifier [Axis]: North Star Acquisitionco, LLC, First Lien Term Loan 6    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 27,846  
Investment, Identifier [Axis]: OFSI Fund Ltd | Multi-Sector Holdings | CLO Notes    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8] 987  
Investment, Identifier [Axis]: OFSI Fund Ltd, CLO Notes    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[9],[10] 1,089  
Investment, Identifier [Axis]: OSCF EDL JV, LLC | Multi-Sector Holdings    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [2],[3],[6],[12],[13],[17] $ 13,148  
Investment, Identifier [Axis]: OSCF EDL JV, LLC | Multi-Sector Holdings | Membership Interest    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment owned, ownership (as a percent) 25.00%  
Net Realized Gain (Loss) $ 0  
Amount of Interest, Fees or Dividends Credited in Income 0  
Fair Value at October 1, 2025 0  
Gross Additions 13,148  
Gross Reductions 0  
Fair Value at June 30, 2026 $ 13,148  
% of Net Assets 0.30%  
Investment, Identifier [Axis]: OneOncology, LLC, First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] $ (179)  
Investment, Identifier [Axis]: OneOncology, LLC, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 17,008  
Investment, Identifier [Axis]: OneOncology, LLC, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 8,475  
Investment, Identifier [Axis]: OneOncology, LLC, First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 49,807  
Investment, Identifier [Axis]: OneOncology, LLC, First Lien Term Loan 4    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 22,764  
Investment, Identifier [Axis]: OneOncology, LLC, First Lien Term Loan 5    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 22,203  
Investment, Identifier [Axis]: Optimizely North America Inc. | Application Software | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11],[12] (282)  
Investment, Identifier [Axis]: Optimizely North America Inc. | Application Software | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 39,410  
Investment, Identifier [Axis]: Optimizely North America Inc., First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[9],[10] (65)  
Investment, Identifier [Axis]: Optimizely North America Inc., First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 47,103  
Investment, Identifier [Axis]: Optimizely Sweden Holdings AB | Application Software | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 16,070  
Investment, Identifier [Axis]: Optimizely Sweden Holdings AB | Application Software | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 6,229  
Investment, Identifier [Axis]: Optimizely Sweden Holdings AB, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 19,765  
Investment, Identifier [Axis]: Optimizely Sweden Holdings AB, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 7,547  
Investment, Identifier [Axis]: PAI Financing Merger Sub LLC | Pharmaceuticals | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (237)  
Investment, Identifier [Axis]: PAI Financing Merger Sub LLC | Pharmaceuticals | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 72,591  
Investment, Identifier [Axis]: PAI Financing Merger Sub LLC, First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (237)  
Investment, Identifier [Axis]: PAI Financing Merger Sub LLC, First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 73,141  
Investment, Identifier [Axis]: PPW Aero Buyer, Inc. | Aerospace & Defense | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 6,627  
Investment, Identifier [Axis]: PPW Aero Buyer, Inc. | Aerospace & Defense | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 10,271  
Investment, Identifier [Axis]: PPW Aero Buyer, Inc. | Aerospace & Defense | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 1,380  
Investment, Identifier [Axis]: PPW Aero Buyer, Inc. | Aerospace & Defense | First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 36,511  
Investment, Identifier [Axis]: PPW Aero Buyer, Inc. | Aerospace & Defense | First Lien Term Loan 4    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 26,018  
Investment, Identifier [Axis]: PPW Aero Buyer, Inc. | Aerospace & Defense | First Lien Term Loan 5    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 4,988  
Investment, Identifier [Axis]: PPW Aero Buyer, Inc. | Aerospace & Defense | First Lien Term Loan 6    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 18,433  
Investment, Identifier [Axis]: PPW Aero Buyer, Inc., First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (7)  
Investment, Identifier [Axis]: PPW Aero Buyer, Inc., First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (18)  
Investment, Identifier [Axis]: PPW Aero Buyer, Inc., First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 18,565  
Investment, Identifier [Axis]: PPW Aero Buyer, Inc., First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 10,349  
Investment, Identifier [Axis]: PPW Aero Buyer, Inc., First Lien Term Loan 4    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 0  
Investment, Identifier [Axis]: PPW Aero Buyer, Inc., First Lien Term Loan 5    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1] 36,789  
Investment, Identifier [Axis]: PPW Aero Buyer, Inc., First Lien Term Loan 6    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1] 26,220  
Investment, Identifier [Axis]: Paratek Pharmaceuticals Inc, First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 18,295  
Investment, Identifier [Axis]: Paulus Holdings Public Limited Company | Health Care Technology | Preferred Equity    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[11],[13] 2,625  
Investment, Identifier [Axis]: Paulus Holdings Public Limited Company | Health Care Technology | Warrants    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[11],[13] 576  
Investment, Identifier [Axis]: Paulus Holdings Public Limited Company, Preferred Equity    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[14] 2,625  
Investment, Identifier [Axis]: Paulus Holdings Public Limited Company, Warrants    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[14] 576  
Investment, Identifier [Axis]: Peraton Corp., First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[10] 6,238  
Investment, Identifier [Axis]: PetSmart LLC, First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[9],[10] 40,083  
Investment, Identifier [Axis]: PetVet Care Centers, LLC | Health Care Services | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 1,873  
Investment, Identifier [Axis]: PetVet Care Centers, LLC | Health Care Services | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 64,266  
Investment, Identifier [Axis]: PetVet Care Centers, LLC | Health Care Services | Preferred Equity    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[11],[13] 7,444  
Investment, Identifier [Axis]: PetVet Care Centers, LLC, First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (678)  
Investment, Identifier [Axis]: PetVet Care Centers, LLC, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 66,562  
Investment, Identifier [Axis]: PetVet Care Centers, LLC, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (697)  
Investment, Identifier [Axis]: PetVet Care Centers, LLC, Preferred Equity    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[14] 7,175  
Investment, Identifier [Axis]: Pike Corporation | Construction & Engineering | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11],[12] (42)  
Investment, Identifier [Axis]: Pike Corporation | Construction & Engineering | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11],[12] (63)  
Investment, Identifier [Axis]: Pike Corporation | Construction & Engineering | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 76,772  
Investment, Identifier [Axis]: Pluralsight, LLC | Application Software | Common Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[11],[13] 0  
Investment, Identifier [Axis]: Pluralsight, LLC | Application Software | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (26)  
Investment, Identifier [Axis]: Pluralsight, LLC | Application Software | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 1,898  
Investment, Identifier [Axis]: Pluralsight, LLC | Application Software | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 3,288  
Investment, Identifier [Axis]: Pluralsight, LLC | Application Software | First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[18] 309  
Investment, Identifier [Axis]: Pluralsight, LLC | Application Software | First Lien Term Loan 4    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (65)  
Investment, Identifier [Axis]: Pluralsight, LLC, Common Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[14] 3,085  
Investment, Identifier [Axis]: Pluralsight, LLC, First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 0  
Investment, Identifier [Axis]: Pluralsight, LLC, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 3,361  
Investment, Identifier [Axis]: Pluralsight, LLC, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 1,940  
Investment, Identifier [Axis]: Pluralsight, LLC, First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 5,623  
Investment, Identifier [Axis]: Pluralsight, LLC, First Lien Term Loan 4    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 0  
Investment, Identifier [Axis]: Poseidon Midco AB | Pharmaceuticals | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11],[12] 21,148  
Investment, Identifier [Axis]: Poseidon Midco AB | Pharmaceuticals | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11],[12] 21,130  
Investment, Identifier [Axis]: Poseidon Midco AB | Pharmaceuticals | First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 53,223  
Investment, Identifier [Axis]: Poseidon Midco AB, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[9],[10] 23,063  
Investment, Identifier [Axis]: Poseidon Midco AB, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[9],[10] (202)  
Investment, Identifier [Axis]: Poseidon Midco AB, First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 59,652  
Investment, Identifier [Axis]: Premium Parent, LLC | Health Care Services | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 2,781  
Investment, Identifier [Axis]: Premium Parent, LLC | Health Care Services | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 99,553  
Investment, Identifier [Axis]: Profrac Holdings II, LLC | Industrial Machinery & Supplies & Components | First Lien Floating Rate Bond    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 51,934  
Investment, Identifier [Axis]: Profrac Holdings II, LLC, First Lien Floating Rate Bond    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 58,068  
Investment, Identifier [Axis]: Project Accelerate Parent, LLC | Systems Software | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 0  
Investment, Identifier [Axis]: Project Accelerate Parent, LLC | Systems Software | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 42,875  
Investment, Identifier [Axis]: Project Accelerate Parent, LLC, First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 0  
Investment, Identifier [Axis]: Project Accelerate Parent, LLC, First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 43,203  
Investment, Identifier [Axis]: Propio LS, LLC | Diversified Support Services | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 190  
Investment, Identifier [Axis]: Propio LS, LLC | Diversified Support Services | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 9,682  
Investment, Identifier [Axis]: Propio LS, LLC | Diversified Support Services | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 26,315  
Investment, Identifier [Axis]: Propio LS, LLC, First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (9)  
Investment, Identifier [Axis]: Propio LS, LLC, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1] 10,097  
Investment, Identifier [Axis]: Propio LS, LLC, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 27,583  
Investment, Identifier [Axis]: Prosper Credit Card 2024-1 | Specialized Finance | CLO Notes 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[11] 5,243  
Investment, Identifier [Axis]: Prosper Credit Card 2024-1 | Specialized Finance | CLO Notes 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[11] 5,458  
Investment, Identifier [Axis]: Prosper Credit Card 2024-1 | Specialized Finance | CLO Notes 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[11] 7,289  
Investment, Identifier [Axis]: Prosper Credit Card 2024-1, CLO Notes 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9] 5,260  
Investment, Identifier [Axis]: Prosper Credit Card 2024-1, CLO Notes 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9] 5,450  
Investment, Identifier [Axis]: Prosper Credit Card 2024-1, CLO Notes 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9] 7,314  
Investment, Identifier [Axis]: Protein For Pets Opco, LLC | Packaged Foods & Meats | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (120)  
Investment, Identifier [Axis]: Protein For Pets Opco, LLC | Packaged Foods & Meats | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 61,334  
Investment, Identifier [Axis]: Protein for Pets Opco, LLC, First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 1,655  
Investment, Identifier [Axis]: Protein for Pets Opco, LLC, First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 61,633  
Investment, Identifier [Axis]: Quantum Bidco Limited | Food Distributors | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 6,948  
Investment, Identifier [Axis]: Quantum Bidco Limited, First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 37,590  
Investment, Identifier [Axis]: RWK Midco AB | Life Sciences Tools & Services | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11],[12] 5,241  
Investment, Identifier [Axis]: RWK Midco AB | Life Sciences Tools & Services | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 47,042  
Investment, Identifier [Axis]: RWK Midco AB | Life Sciences Tools & Services | First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 17,571  
Investment, Identifier [Axis]: RWK Midco AB, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[9],[10] (165)  
Investment, Identifier [Axis]: RWK Midco AB, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 72,445  
Investment, Identifier [Axis]: Recess Topco Partnership LP | Passenger Ground Transportation | Subordinated Debt Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 95,308  
Investment, Identifier [Axis]: Renaissance Holding Corp. | Education Services | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8] 28,174  
Investment, Identifier [Axis]: Renaissance Holding Corp., First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[10] 33,720  
Investment, Identifier [Axis]: Resilience Parent LLC | Electrical Components & Equipment | Second Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 23,396  
Investment, Identifier [Axis]: Resistance Holdings, Inc. | Pharmaceuticals | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (49)  
Investment, Identifier [Axis]: Resistance Holdings, Inc. | Pharmaceuticals | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 40,146  
Investment, Identifier [Axis]: Rockford Tower CLO 2024-1, CLO Notes    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[9],[10] 2,538  
Investment, Identifier [Axis]: SEI Holding I Corporation | Trading Companies & Distributors | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (38)  
Investment, Identifier [Axis]: SEI Holding I Corporation | Trading Companies & Distributors | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 2,413  
Investment, Identifier [Axis]: SEI Holding I Corporation | Trading Companies & Distributors | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 3,525  
Investment, Identifier [Axis]: SEI Holding I Corporation | Trading Companies & Distributors | First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (85)  
Investment, Identifier [Axis]: SEI Holding I Corporation | Trading Companies & Distributors | First Lien Term Loan 4    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 16,769  
Investment, Identifier [Axis]: SEI Holding I Corporation, First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (57)  
Investment, Identifier [Axis]: SEI Holding I Corporation, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 2,419  
Investment, Identifier [Axis]: SEI Holding I Corporation, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 3,251  
Investment, Identifier [Axis]: SEI Holding I Corporation, First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (128)  
Investment, Identifier [Axis]: SEI Holding I Corporation, First Lien Term Loan 4    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 16,813  
Investment, Identifier [Axis]: Saratoga | Diversified Financial Services | Subordinated Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11],[19] 55,819  
Investment, Identifier [Axis]: Saratoga, Credit Linked Note    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10],[20] 93,043  
Investment, Identifier [Axis]: Secure Acquisition Inc., First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[10] 31,760  
Investment, Identifier [Axis]: Seres Therapeutics, Inc. | Biotechnology | Warrants    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[11],[13] 5  
Investment, Identifier [Axis]: Seres Therapeutics, Inc., Warrants    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[14] 40  
Investment, Identifier [Axis]: Sierra Enterprises, LLC | Soft Drinks & Non-alcoholic Beverages | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 0  
Investment, Identifier [Axis]: Sierra Enterprises, LLC | Soft Drinks & Non-alcoholic Beverages | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 56,809  
Investment, Identifier [Axis]: Sierra Enterprises, LLC, First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (96)  
Investment, Identifier [Axis]: Sierra Enterprises, LLC, First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 56,484  
Investment, Identifier [Axis]: Silk Holdings III LLC | Personal Care Products | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 146  
Investment, Identifier [Axis]: Silk Holdings III LLC | Personal Care Products | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 35,375  
Investment, Identifier [Axis]: Sorenson Communications, LLC | Communications Equipment | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (129)  
Investment, Identifier [Axis]: Sorenson Communications, LLC | Communications Equipment | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 76,676  
Investment, Identifier [Axis]: Sorenson Communications, LLC, First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (159)  
Investment, Identifier [Axis]: Sorenson Communications, LLC, First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 81,609  
Investment, Identifier [Axis]: Sphynx UK Bidco Ltd | Packaged Foods & Meats | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 3,832  
Investment, Identifier [Axis]: Sphynx UK Bidco Ltd | Packaged Foods & Meats | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 17,996  
Investment, Identifier [Axis]: Sphynx UK Bidco Ltd | Packaged Foods & Meats | First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 4,206  
Investment, Identifier [Axis]: Sphynx UK Bidco Ltd, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1] 5,557  
Investment, Identifier [Axis]: Sphynx UK Bidco Ltd, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1] 5,452  
Investment, Identifier [Axis]: Sphynx UK Bidco Ltd, First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1] 25,206  
Investment, Identifier [Axis]: Spruce Bidco I Inc. | Health Care Equipment | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 10,020  
Investment, Identifier [Axis]: Spruce Bidco I Inc. | Health Care Equipment | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 114,732  
Investment, Identifier [Axis]: Spruce Bidco I Inc. | Health Care Equipment | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 14,641  
Investment, Identifier [Axis]: Spruce Bidco I Inc. | Health Care Equipment | First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 13,666  
Investment, Identifier [Axis]: Spruce Bidco I Inc., First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (377)  
Investment, Identifier [Axis]: Spruce Bidco I Inc., First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 15,068  
Investment, Identifier [Axis]: Spruce Bidco I Inc., First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 14,957  
Investment, Identifier [Axis]: Spruce Bidco I Inc., First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 114,948  
Investment, Identifier [Axis]: Staples, Inc. | Office Services & Supplies | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8] 16,241  
Investment, Identifier [Axis]: Staples, Inc. | Office Services & Supplies | Fixed Rate Bond    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7] 25,283  
Investment, Identifier [Axis]: Staples, Inc., First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[10] 22,485  
Investment, Identifier [Axis]: Staples, Inc., Fixed Rate Bond    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1] 26,316  
Investment, Identifier [Axis]: Star Parent, Inc., First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[10] 65,265  
Investment, Identifier [Axis]: SumUp Holdings Luxembourg | Diversified Financial Services | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 53,373  
Investment, Identifier [Axis]: SumUp Holdings Luxembourg, First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[9],[10] 55,547  
Investment, Identifier [Axis]: TBRS, Inc. | Health Care Supplies | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 540  
Investment, Identifier [Axis]: TBRS, Inc. | Health Care Supplies | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (30)  
Investment, Identifier [Axis]: TBRS, Inc. | Health Care Supplies | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 55,521  
Investment, Identifier [Axis]: TBRS, Inc., First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 392  
Investment, Identifier [Axis]: TBRS, Inc., First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 55,892  
Investment, Identifier [Axis]: TBRS, Inc., First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (33)  
Investment, Identifier [Axis]: THG Acquisition, LLC | Insurance Brokers | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11],[12] 1,383  
Investment, Identifier [Axis]: THG Acquisition, LLC | Insurance Brokers | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11],[12] 8,346  
Investment, Identifier [Axis]: THG Acquisition, LLC | Insurance Brokers | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 50,103  
Investment, Identifier [Axis]: THG Acquisition, LLC, First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[9],[10] 410  
Investment, Identifier [Axis]: THG Acquisition, LLC, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[9],[10] 1,814  
Investment, Identifier [Axis]: THG Acquisition, LLC, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 50,469  
Investment, Identifier [Axis]: Ten-X LLC | Interactive Media & Services | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8] 22,694  
Investment, Identifier [Axis]: Ten-X LLC, First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[10] 21,359  
Investment, Identifier [Axis]: Tequilas Premium, Inc. | Distillers & Vintners | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 15  
Investment, Identifier [Axis]: Tequilas Premium, Inc. | Distillers & Vintners | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 36,021  
Investment, Identifier [Axis]: Tequilas Premium, Inc. | Distillers & Vintners | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 35,099  
Investment, Identifier [Axis]: Transit Buyer LLC | Diversified Support Services | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 699  
Investment, Identifier [Axis]: Transit Buyer LLC | Diversified Support Services | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 7,920  
Investment, Identifier [Axis]: Transit Buyer LLC | Diversified Support Services | First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 3,735  
Investment, Identifier [Axis]: Transit Buyer LLC | Diversified Support Services | First Lien Term Loan 4    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 8,113  
Investment, Identifier [Axis]: Transit Buyer LLC, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (12)  
Investment, Identifier [Axis]: Transit Buyer LLC, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 8,012  
Investment, Identifier [Axis]: Transit Buyer LLC, First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 3,778  
Investment, Identifier [Axis]: Transit Buyer LLC, First Lien Term Loan 4    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 8,208  
Investment, Identifier [Axis]: Trident TPI Holdings Inc, First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[10] 12,053  
Investment, Identifier [Axis]: Trident TPI Holdings, Inc. | Paper & Plastic Packaging Products & Materials | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8] 9,606  
Investment, Identifier [Axis]: Trinitas CLO VI Ltd. | Multi-Sector Holdings | CLO Notes    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8] 1,932  
Investment, Identifier [Axis]: Trinitas CLO VI Ltd., CLO Notes    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[9],[10] 2,746  
Investment, Identifier [Axis]: Truck-Lite Co., LLC | Construction Machinery & Heavy Transportation Equipment | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (72)  
Investment, Identifier [Axis]: Truck-Lite Co., LLC | Construction Machinery & Heavy Transportation Equipment | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 1,624  
Investment, Identifier [Axis]: Truck-Lite Co., LLC | Construction Machinery & Heavy Transportation Equipment | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 7,478  
Investment, Identifier [Axis]: Truck-Lite Co., LLC | Construction Machinery & Heavy Transportation Equipment | First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (92)  
Investment, Identifier [Axis]: Truck-Lite Co., LLC | Construction Machinery & Heavy Transportation Equipment | First Lien Term Loan 4    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 1,985  
Investment, Identifier [Axis]: Truck-Lite Co., LLC | Construction Machinery & Heavy Transportation Equipment | First Lien Term Loan 5    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 75,375  
Investment, Identifier [Axis]: Truck-Lite Co., LLC, First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (76)  
Investment, Identifier [Axis]: Truck-Lite Co., LLC, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 1,999  
Investment, Identifier [Axis]: Truck-Lite Co., LLC, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 7,530  
Investment, Identifier [Axis]: Truck-Lite Co., LLC, First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 75,925  
Investment, Identifier [Axis]: Truck-Lite Co., LLC, First Lien Term Loan 4    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (28)  
Investment, Identifier [Axis]: Truck-Lite Co., LLC, First Lien Term Loan 5    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (95)  
Investment, Identifier [Axis]: US WorldMeds Ventures, LLC | Pharmaceuticals | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 21,454  
Investment, Identifier [Axis]: US WorldMeds Ventures, LLC | Pharmaceuticals | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 0  
Investment, Identifier [Axis]: US WorldMeds Ventures, LLC | Pharmaceuticals | First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 0  
Investment, Identifier [Axis]: US WorldMeds Ventures, LLC, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 0  
Investment, Identifier [Axis]: US WorldMeds Ventures, LLC, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 0  
Investment, Identifier [Axis]: US WorldMeds Ventures, LLC, First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1] 21,608  
Investment, Identifier [Axis]: USIC Holdings, Inc. | Diversified Support Services | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 5,207  
Investment, Identifier [Axis]: USIC Holdings, Inc. | Diversified Support Services | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 2,934  
Investment, Identifier [Axis]: USIC Holdings, Inc. | Diversified Support Services | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 17,017  
Investment, Identifier [Axis]: USIC Holdings, Inc. | Diversified Support Services | First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 61,524  
Investment, Identifier [Axis]: USIC Holdings, Inc., First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 2,055  
Investment, Identifier [Axis]: USIC Holdings, Inc., First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 1,241  
Investment, Identifier [Axis]: USIC Holdings, Inc., First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 16,910  
Investment, Identifier [Axis]: USIC Holdings, Inc., First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1] 45,973  
Investment, Identifier [Axis]: Verde Purchaser, LLC, First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[10] 16,051  
Investment, Identifier [Axis]: Verona Pharma, Inc., First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9] 6,529  
Investment, Identifier [Axis]: Verona Pharma, Inc., First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9] 6,995  
Investment, Identifier [Axis]: Verona Pharma, Inc., First Lien Term Loan 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9] 5,129  
Investment, Identifier [Axis]: Verona Pharma, Inc., First Lien Term Loan 4    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[9] 0  
Investment, Identifier [Axis]: Violin Finco Guernsey Limited, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[9],[10] 0  
Investment, Identifier [Axis]: Violin Finco Guernsey Limited, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[9],[10] 54,300  
Investment, Identifier [Axis]: WP CPP Holdings, LLC | Aerospace & Defense | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (12)  
Investment, Identifier [Axis]: WP CPP Holdings, LLC | Aerospace & Defense | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 2,665  
Investment, Identifier [Axis]: WP CPP Holdings, LLC | Aerospace & Defense | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 56,230  
Investment, Identifier [Axis]: WP CPP Holdings, LLC, First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (17)  
Investment, Identifier [Axis]: WP CPP Holdings, LLC, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 2,639  
Investment, Identifier [Axis]: WP CPP Holdings, LLC, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 55,653  
Investment, Identifier [Axis]: Werner Finco LP | Building Products | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 47,931  
Investment, Identifier [Axis]: Werner Finco LP, First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 48,245  
Investment, Identifier [Axis]: West Star Aviation Acquisition LLC | Aerospace & Defense | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 1,327  
Investment, Identifier [Axis]: West Star Aviation Acquisition LLC | Aerospace & Defense | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 10,478  
Investment, Identifier [Axis]: West Star Aviation Acquisition LLC | Aerospace & Defense | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 65,216  
Investment, Identifier [Axis]: West Star Aviation Acquisition LLC, First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 1,835  
Investment, Identifier [Axis]: West Star Aviation Acquisition LLC, First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 0  
Investment, Identifier [Axis]: West Star Aviation Acquisition LLC, First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 66,040  
Investment, Identifier [Axis]: Whitney Merger Sub, Inc. | Application Software | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] (194)  
Investment, Identifier [Axis]: Whitney Merger Sub, Inc. | Application Software | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 66,698  
Investment, Identifier [Axis]: Whitney Merger Sub, Inc., First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] (91)  
Investment, Identifier [Axis]: Whitney Merger Sub, Inc., First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 67,765  
Investment, Identifier [Axis]: Woodmont 2022-9 Trust | Multi-Sector Holdings | CLO Notes    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8] 9,387  
Investment, Identifier [Axis]: Woodmont 2022-9 Trust, CLO Notes    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[9],[10] 9,282  
Investment, Identifier [Axis]: X Holdings Corp., First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[10] 23,119  
Investment, Identifier [Axis]: X Holdings Corp., First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1] 10,045  
Investment, Identifier [Axis]: Zayo Group Holdings Inc | Alternative Carriers | First Lien Term Loan    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8] 11,115  
Investment, Identifier [Axis]: athenahealth Group Inc. | Health Care Technology | Fixed Rate Bond    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7] 9,937  
Investment, Identifier [Axis]: athenahealth Group Inc. | Health Care Technology | Preferred Equity    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[11],[13],[21] 2,396  
Investment, Identifier [Axis]: athenahealth Group Inc., Preferred Equity    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[14],[22] 8,390  
Investment, Identifier [Axis]: eShipping, LLC | Diversified Support Services | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11],[12] (45)  
Investment, Identifier [Axis]: eShipping, LLC | Diversified Support Services | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] 18,671  
Investment, Identifier [Axis]: eShipping, LLC | Diversified Support Services | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [6],[7],[8],[11] (16)  
Investment, Identifier [Axis]: iCIMs, Inc. | Application Software | First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11],[12] 326  
Investment, Identifier [Axis]: iCIMs, Inc. | Application Software | First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 15,270  
Investment, Identifier [Axis]: iCIMs, Inc. | Application Software | First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at June 30, 2026 [7],[8],[11] 2,198  
Investment, Identifier [Axis]: iCIMs, Inc., First Lien Revolver    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[5],[10] 369  
Investment, Identifier [Axis]: iCIMs, Inc., First Lien Term Loan 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] 2,297  
Investment, Identifier [Axis]: iCIMs, Inc., First Lien Term Loan 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Fair Value at October 1, 2025 [1],[4],[10] $ 15,911  
[1] Non-Control/Non-Affiliate Investments are investments that are neither Control Investments nor Affiliate Investments. Control Investments generally are defined by the Investment Company Act as investments in companies in which the Company owns more than 25% of the voting securities and/or has the power to exercise control over the management or policies of the company. Affiliate Investments generally are defined by the Investment Company Act as investments in companies in which the Company owns between 5% and 25% of the voting securities.
[2] As defined in the Investment Company Act, the Company is deemed to be both an "Affiliated Person" of and to "Control" these portfolio companies as the Company owns more than 25% of the portfolio company's outstanding voting securities or has the power to exercise control over management or policies of such portfolio company (including through a management agreement). See Schedule 12-14 in the accompanying notes to the Consolidated Financial Statements for transactions during the nine months ended June 30, 2026 in which the issuer was both an Affiliated Person and a portfolio company that the Company is deemed to control.
[3] Control Investments generally are defined by the Investment Company Act, as investments in companies in which the Company owns more than 25% of the voting securities or maintains greater than 50% of the board representation.
[4] As of September 30, 2025, these investments are categorized as Level 3 within the fair value hierarchy established by ASC 820 and were valued using significant unobservable inputs.
[5] Investment has undrawn commitments. Unamortized fees are classified as unearned income which reduces cost basis, which may result in a negative cost basis. A negative fair value may result from the unfunded commitment being valued below par.
[6] Investment is not a qualifying asset as defined under Section 55(a) of the Investment Company Act. Under the Investment Company Act, the Company may not acquire any non-qualifying asset unless, at the time the acquisition is made, qualifying assets represent at least 70% of the Company’s total assets. As of June 30, 2026, qualifying assets represented 73.8% of the Company’s total assets and non-qualifying assets represented 26.2% of the Company’s total assets.
[7] Non-Control/Non-Affiliate Investments are investments that are neither Control Investments nor Affiliate Investments. Control Investments generally are defined by the Investment Company Act of 1940, as amended (the “Investment Company Act”), as investments in companies in which the Company owns more than 25% of the voting securities and/or has the power to exercise control over the management or policies of the company. Affiliate Investments generally are defined by the Investment Company Act as investments in companies in which the Company owns between 5% and 25% of the voting securities.
[8] The interest rate on the principal balance outstanding for most floating rate loans is indexed to the secured overnight financing rate (“SOFR”), the euro interbank offered rate (“EURIBOR” or “E”), the sterling overnight index average (“SONIA”), the Tokyo overnight average rate ("TONA"), the Canadian overnight repo rate average ("CORRA"), the bank bill swap rate ("BBSW"), the Norwegian interbank offered rate (“NIBOR”), the Stockholm interbank offered rate ("STIBOR"), and/or an alternate base rate (e.g., prime rate), which typically resets semi-annually, quarterly, or monthly at the borrower’s option. The borrower may also elect to have multiple interest reset periods for each loan. For each of these loans, the Company has provided the applicable margin over the reference rate or the alternate base rate based on each respective credit agreement and the cash interest rate as of period end. As of June 30, 2026, the reference rates for the Company’s variable rate loans were the 30-day SOFR at 3.63%, the 90-day SOFR at 3.63%, the 180-day SOFR at 3.67%, the PRIME at 6.75%, the SONIA at 3.75%, the TONA at 0.98%, the 30-day CORRA at 2.28%, the 90-day BBSW at 4.46%, the 90-day NIBOR at 4.56%, the 180-day STIBOR at 2.12%, the 30-day EURIBOR at 2.20%, the 90-day EURIBOR at 2.32% and the 180-day EURIBOR at 2.57%. Most loans include an interest floor, which generally ranges from 0% to 3.00%. SOFR and SONIA based contracts may include a credit spread adjustment that is charged in addition to the base rate and the stated spread.
[9] Investment is not a qualifying asset as defined under Section 55(a) of the Investment Company Act. Under the Investment Company Act, the Company may not acquire any non-qualifying asset unless, at the time the acquisition is made, qualifying assets represent at least 70% of the Company’s total assets. As of September 30, 2025, qualifying assets represented 72.1% of the Company’s total assets and non-qualifying assets represented 27.9% of the Company’s total assets.
[10] The interest rate on the principal balance outstanding for most floating rate loans is indexed to SOFR, EURIBOR, SONIA, TONA, CORRA, BBSW, NIBOR, STIBOR, and/or an alternate base rate (e.g., prime rate), which typically resets semi-annually, quarterly, or monthly at the borrower’s option. The borrower may also elect to have multiple interest reset periods for each loan. For each of these loans, the Company has provided the applicable margin over the reference rate or the alternate base rate based on each respective credit agreement and the cash interest rate as of period end. As of September 30, 2025, the reference rates for the Company’s variable rate loans were the 30-day SOFR at 4.13%, the 90-day SOFR at 3.98%, the 180-day SOFR at 3.85%, the PRIME at 7.25%, the SONIA at 4.19%, the TONA at 0.75%, the 90-day CORRA at 2.54%, the 90-day BBSW at 3.58%, the 90-day NIBOR at 4.13%, the 90-day STIBOR at 1.89%, the 30-day EURIBOR at 1.93%, the 90-day EURIBOR at 2.03% and the 180-day EURIBOR at 2.10%. Most loans include an interest floor, which generally ranges from 0% to 3.00%. SOFR and SONIA based contracts may include a credit spread adjustment that is charged in addition to the base rate and the stated spread.
[11] As of June 30, 2026, these investments are categorized as Level 3 within the fair value hierarchy established by Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 820, Fair Value Measurements and Disclosures (“ASC 820”) and were valued using significant unobservable inputs.
[12] Investment has undrawn commitments. Unamortized fees are classified as unearned income which reduces cost basis, which may result in a negative cost basis. A negative fair value may result from the unfunded commitment being valued below par.
[13] This investment represents a credit default swap that functions, in substance, like a credit linked note and represents a credit risk transfer for a pool of reference assets owned by a bank. The Company fully funded margin up front and in return the Company receives periodic interest payments. The Company’s risk of loss is limited to the principal amount disclosed herein. The reference assets are primarily composed of investment grade corporate debt. The Company may be exposed to counterparty risk, which could make it difficult for the Company to collect on obligations, thereby resulting in potentially significant losses. In addition, the Company only has a contractual relationship with the bank, and not with the reference obligors of the reference assets. Accordingly, the Company generally may have no right to directly enforce compliance by the reference obligors with the terms of the reference assets. The Company will not directly benefit from the reference assets and will not have the benefit of the remedies that would normally be available to a holder of such reference assets. In addition, in the event of the insolvency of the counterparty, the Company may be treated as a general creditor of such counterparty, and will not have any claim with respect to the reference assets.
(13)Income producing through payment of dividends or distributions.
(14)Security acquired in transaction exempt from registration under the Securities Act of 1933, as amended (the "Securities Act"), and may be deemed to be “restricted security” under the Securities Act. As of June 30, 2026, the aggregate fair value of these securities is $35,111, or 0.8% of the Company’s net assets. The acquisition dates of the restricted securities are as follows:
Portfolio CompanyType of InvestmentAcquisition Date
ADC Therapeutics SAWarrants8/15/2022
AIP RD Buyer Corp.Common Stock12/23/2021
athenahealth Group Inc.Preferred Equity2/15/2022
BioXcel Therapeutics, Inc.Common Stock11/25/2024
BioXcel Therapeutics, Inc.Warrants4/28/2022
BioXcel Therapeutics, Inc.Warrants3/20/2024
Delta Leasing SPV II LLCPreferred Equity8/31/2022
Delta Leasing SPV II LLCCommon Stock8/31/2022
Delta Leasing SPV II LLCWarrants8/31/2022
Eyesouth Eye Care Holdco LLCCommon Stock10/7/2022
IDF 14 FinanceCo, LLCWarrants6/24/2026
JN Bidco LLCCommon Stock8/12/2024
Mesoblast, Inc.Warrants12/20/2021
Paulus Holdings Public Limited CompanyPreferred Equity10/14/2022
Paulus Holdings Public Limited CompanyWarrants10/14/2022
PetVet Care Centers, LLC Preferred Equity11/14/2023
Pluralsight, LLCCommon Stock8/22/2024
Seres Therapeutics, Inc.Warrants4/27/2023
OSCF EDL JV, LLCMembership Interest6/26/2026
[14] Security acquired in transaction exempt from registration under the Securities Act and may be deemed to be “restricted security” under the Securities Act. As of September 30, 2025, the aggregate fair value of these securities is $31,652, or 0.7% of the Company’s net assets. The acquisition dates of the restricted securities are as follows:
Portfolio CompanyType of InvestmentAcquisition Date
ADC Therapeutics SAWarrants8/15/2022
AIP RD Buyer Corp.Common Stock12/23/2021
athenahealth Group Inc.Preferred Equity2/15/2022
BioXcel Therapeutics, Inc.Common Stock11/25/2024
BioXcel Therapeutics, Inc.Warrants4/28/2022
BioXcel Therapeutics, Inc.Warrants3/20/2024
Delta Leasing SPV II LLCPreferred Equity8/31/2022
Delta Leasing SPV II LLCCommon Stock8/31/2022
Delta Leasing SPV II LLCWarrants8/31/2022
Eyesouth Eye Care Holdco LLCCommon Stock10/7/2022
JN Bidco LLCCommon Stock8/12/2024
Mesoblast, Inc.Warrants12/20/2021
Paulus Holdings Public Limited CompanyPreferred Equity10/14/2022
Paulus Holdings Public Limited CompanyWarrants10/14/2022
PetVet Care Centers, LLC Preferred Equity11/14/2023
Pluralsight, LLCCommon Stock8/22/2024
Seres Therapeutics, Inc.Warrants4/27/2023
[15] This investment was on non-accrual status as of September 30, 2025.
[16] In addition to the interest earned based on the stated interest rate of this investment, which is the amount reflected in this schedule, the Company may be entitled to receive additional interest as a result of an arrangement with other lenders to the extent an investment has been allocated to “first out” and “last out” tranches, whereby the “first out” tranche will have priority as to the “last out” tranche with respect to payments of principal, interest and any amounts due thereunder and the Company holds the “last out” tranche.
[17] This investment was valued using net asset value as a practical expedient for fair value consistent with ASC 820. These investments are excluded from the hierarchical levels.
[18] This investment was on non-accrual status as of June 30, 2026.
[19] This investment was on non-accrual status as of June 30, 2026.
[20] This investment represents a credit default swap that functions, in substance, like a credit linked note and represents a credit risk transfer for a pool of reference assets owned by a bank. The Company fully funded margin up front and in return the Company receives periodic interest payments. The Company’s risk of loss is limited to the principal amount disclosed herein. The reference assets are primarily composed of investment grade corporate debt. The Company may be exposed to counterparty risk, which could make it difficult for the Company to collect on obligations, thereby resulting in potentially significant losses. In addition, the Company only has a contractual relationship with the bank, and not with the reference obligors of the reference assets. Accordingly, the Company generally may have no right to directly enforce compliance by the reference obligors with the terms of the reference assets. The Company will not directly benefit from the reference assets and will not have the benefit of the remedies that would normally be available to a holder of such reference assets. In addition, in the event of the insolvency of the counterparty, the Company may be treated as a general creditor of such counterparty, and will not have any claim with respect to the reference assets.
[21] Income producing through payment of dividends or distributions.
[22] Income producing through payment of dividends or distributions.