v3.26.3
Investments - Composition of Investments Based on Fair Value (Details)
 9 Months Ended 12 Months Ended
Sep. 30, 2026
Dec. 31, 2025
Investment Owned, At Fair Value | Industry Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 100.00% 100.00%
Investment Owned, At Fair Value | Industry Concentration Risk | Aerospace & Defense    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 2.10% 2.70%
Investment Owned, At Fair Value | Industry Concentration Risk | Airlines    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 0.30% 0.30%
Investment Owned, At Fair Value | Industry Concentration Risk | Air Freight & Logistics    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 0.60% 0.00%
Investment Owned, At Fair Value | Industry Concentration Risk | Application Software    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 14.80% 13.60%
Investment Owned, At Fair Value | Industry Concentration Risk | Asset based lending and fund finance    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 0.70% 0.40%
Investment Owned, At Fair Value | Industry Concentration Risk | Banks    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 0.00% 0.30%
Investment Owned, At Fair Value | Industry Concentration Risk | Beverages    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 0.00% 0.00%
Investment Owned, At Fair Value | Industry Concentration Risk | Building Products    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 0.30% 0.50%
Investment Owned, At Fair Value | Industry Concentration Risk | Buildings & Real Estate    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 1.30% 1.30%
Investment Owned, At Fair Value | Industry Concentration Risk | Capital Markets    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 1.90% 0.80%
Investment Owned, At Fair Value | Industry Concentration Risk | Commercial Services & Supplies    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 0.20% 0.20%
Investment Owned, At Fair Value | Industry Concentration Risk | Construction & Engineering    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 0.20% 0.20%
Investment Owned, At Fair Value | Industry Concentration Risk | Consumer Finance    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 0.40% 0.50%
Investment Owned, At Fair Value | Industry Concentration Risk | Diversified Consumer Services    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 2.70% 3.30%
Investment Owned, At Fair Value | Industry Concentration Risk | Diversified Financial Services    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 9.80% 9.80%
Investment Owned, At Fair Value | Industry Concentration Risk | Diversified Support Services    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 0.20% 0.20%
Investment Owned, At Fair Value | Industry Concentration Risk | Entertainment    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 1.40% 1.40%
Investment Owned, At Fair Value | Industry Concentration Risk | Equity Real Estate Investment Trusts (REITs)    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 0.80% 0.80%
Investment Owned, At Fair Value | Industry Concentration Risk | Food & Staples Retailing    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 1.30% 1.30%
Investment Owned, At Fair Value | Industry Concentration Risk | Health Care Equipment & Supplies    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 2.00% 2.00%
Investment Owned, At Fair Value | Industry Concentration Risk | Health Care Providers & Services    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 3.00% 3.40%
Investment Owned, At Fair Value | Industry Concentration Risk | Health Care Technology    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 12.30% 13.90%
Investment Owned, At Fair Value | Industry Concentration Risk | Hotels, Restaurants & Leisure    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 0.00% 0.80%
Investment Owned, At Fair Value | Industry Concentration Risk | Household Durables    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 0.50% 0.60%
Investment Owned, At Fair Value | Industry Concentration Risk | Industrial Conglomerates    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 0.70% 0.70%
Investment Owned, At Fair Value | Industry Concentration Risk | Insurance    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 3.90% 4.40%
Investment Owned, At Fair Value | Industry Concentration Risk | Internet & Direct Marketing Retail    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 1.80% 2.20%
Investment Owned, At Fair Value | Industry Concentration Risk | IT Services    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 5.40% 4.20%
Investment Owned, At Fair Value | Industry Concentration Risk | Joint ventures    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 0.40% 0.40%
Investment Owned, At Fair Value | Industry Concentration Risk | Life Sciences Tools & Services    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 1.10% 2.10%
Investment Owned, At Fair Value | Industry Concentration Risk | Media    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 0.90% 0.90%
Investment Owned, At Fair Value | Industry Concentration Risk | Metals & Mining    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 0.00% 0.00%
Investment Owned, At Fair Value | Industry Concentration Risk | Multiline Retail    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 0.20% 0.20%
Investment Owned, At Fair Value | Industry Concentration Risk | Pharmaceuticals    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 1.70% 1.00%
Investment Owned, At Fair Value | Industry Concentration Risk | Professional Services    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 6.50% 6.10%
Investment Owned, At Fair Value | Industry Concentration Risk | Real Estate Management & Development    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 1.60% 0.20%
Investment Owned, At Fair Value | Industry Concentration Risk | Road & Rail    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 0.10% 0.10%
Investment Owned, At Fair Value | Industry Concentration Risk | Specialty Retail    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 0.90% 0.80%
Investment Owned, At Fair Value | Industry Concentration Risk | Systems Software    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 17.50% 17.90%
Investment Owned, At Fair Value | Industry Concentration Risk | Thrifts & Mortgage Finance    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 0.00% 0.00%
Investment Owned, At Fair Value | Industry Concentration Risk | Wireless Telecommunication Services    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 0.50% 0.50%
Investment Owned, At Fair Value | Geographic Concentration Risk    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 100.00% 100.00%
Investment Owned, At Fair Value | Geographic Concentration Risk | Midwest    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 16.40% 16.30%
Investment Owned, At Fair Value | Geographic Concentration Risk | Northeast    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 19.30% 21.80%
Investment Owned, At Fair Value | Geographic Concentration Risk | South    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 25.70% 24.20%
Investment Owned, At Fair Value | Geographic Concentration Risk | West    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 26.90% 27.80%
Investment Owned, At Fair Value | Geographic Concentration Risk | United Kingdom    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 6.00% 5.50%
Investment Owned, At Fair Value | Geographic Concentration Risk | Other international    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 5.70% 4.40%
Total Portfolio Concentration | Industry Concentration Risk | Joint ventures    
Schedule of Investments [Line Items]    
Concentration risk (as percent) 0.10% 0.10%