Investments - Composition of Investments Based on Fair Value (Details) - Investment Owned, At Fair Value	9 Months Ended	12 Months Ended
	Sep. 30, 2024	Dec. 31, 2023
Industry Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as percent)	100.00%	100.00%
Industry Concentration Risk | Aerospace & Defense
Schedule of Investments [Line Items]
Concentration risk (as percent)	1.40%	1.90%
Industry Concentration Risk | Application Software
Schedule of Investments [Line Items]
Concentration risk (as percent)	15.90%	15.80%
Industry Concentration Risk | Banks
Schedule of Investments [Line Items]
Concentration risk (as percent)	1.70%	2.20%
Industry Concentration Risk | Beverages
Schedule of Investments [Line Items]
Concentration risk (as percent)	0.10%	0.30%
Industry Concentration Risk | Building Products
Schedule of Investments [Line Items]
Concentration risk (as percent)	0.20%	0.30%
Industry Concentration Risk | Buildings & Real Estate
Schedule of Investments [Line Items]
Concentration risk (as percent)	1.30%	0.00%
Industry Concentration Risk | Capital Markets
Schedule of Investments [Line Items]
Concentration risk (as percent)	0.40%	0.30%
Industry Concentration Risk | Commercial Services & Supplies
Schedule of Investments [Line Items]
Concentration risk (as percent)	0.70%	0.50%
Industry Concentration Risk | Construction & Engineering
Schedule of Investments [Line Items]
Concentration risk (as percent)	0.10%	0.20%
Industry Concentration Risk | Consumer Finance
Schedule of Investments [Line Items]
Concentration risk (as percent)	0.60%	0.50%
Industry Concentration Risk | Diversified Consumer Services
Schedule of Investments [Line Items]
Concentration risk (as percent)	2.20%	0.30%
Industry Concentration Risk | Diversified Financial Services
Schedule of Investments [Line Items]
Concentration risk (as percent)	11.00%	9.50%
Industry Concentration Risk | Diversified Support Services
Schedule of Investments [Line Items]
Concentration risk (as percent)	0.60%	0.70%
Industry Concentration Risk | Electrical Equipment
Schedule of Investments [Line Items]
Concentration risk (as percent)	0.00%	3.30%
Industry Concentration Risk | Entertainment
Schedule of Investments [Line Items]
Concentration risk (as percent)	1.90%	0.00%
Industry Concentration Risk | Equity Real Estate Investment Trusts (REITs)
Schedule of Investments [Line Items]
Concentration risk (as percent)	0.10%	0.00%
Industry Concentration Risk | Food & Staples Retailing
Schedule of Investments [Line Items]
Concentration risk (as percent)	3.00%	3.80%
Industry Concentration Risk | Health Care Equipment & Supplies
Schedule of Investments [Line Items]
Concentration risk (as percent)	1.30%	1.20%
Industry Concentration Risk | Health Care Technology
Schedule of Investments [Line Items]
Concentration risk (as percent)	11.80%	8.90%
Industry Concentration Risk | Health Care Providers & Services
Schedule of Investments [Line Items]
Concentration risk (as percent)	4.90%	5.40%
Industry Concentration Risk | Hotels, Restaurants & Leisure
Schedule of Investments [Line Items]
Concentration risk (as percent)	0.60%	0.00%
Industry Concentration Risk | Industrial Conglomerates
Schedule of Investments [Line Items]
Concentration risk (as percent)	0.10%	0.00%
Industry Concentration Risk | Insurance
Schedule of Investments [Line Items]
Concentration risk (as percent)	5.10%	4.60%
Industry Concentration Risk | Internet & Direct Marketing Retail
Schedule of Investments [Line Items]
Concentration risk (as percent)	0.90%	0.00%
Industry Concentration Risk | IT Services
Schedule of Investments [Line Items]
Concentration risk (as percent)	3.20%	3.90%
Industry Concentration Risk | Joint Ventures
Schedule of Investments [Line Items]
Concentration risk (as percent)	0.00%	0.00%
Industry Concentration Risk | Life Sciences Tools & Services
Schedule of Investments [Line Items]
Concentration risk (as percent)	1.40%	1.80%
Industry Concentration Risk | Media
Schedule of Investments [Line Items]
Concentration risk (as percent)	1.30%	0.00%
Industry Concentration Risk | Multiline Retail
Schedule of Investments [Line Items]
Concentration risk (as percent)	0.30%	0.00%
Industry Concentration Risk | Pharmaceuticals
Schedule of Investments [Line Items]
Concentration risk (as percent)	2.00%	1.50%
Industry Concentration Risk | Professional Services
Schedule of Investments [Line Items]
Concentration risk (as percent)	4.20%	3.90%
Industry Concentration Risk | Real Estate Management & Development
Schedule of Investments [Line Items]
Concentration risk (as percent)	0.90%	1.20%
Industry Concentration Risk | Systems Software
Schedule of Investments [Line Items]
Concentration risk (as percent)	20.80%	28.00%
Geographic Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as percent)	100.00%	100.00%
Geographic Concentration Risk | Midwest
Schedule of Investments [Line Items]
Concentration risk (as percent)	14.30%	11.40%
Geographic Concentration Risk | Northeast
Schedule of Investments [Line Items]
Concentration risk (as percent)	18.20%	20.00%
Geographic Concentration Risk | South
Schedule of Investments [Line Items]
Concentration risk (as percent)	26.40%	25.80%
Geographic Concentration Risk | West
Schedule of Investments [Line Items]
Concentration risk (as percent)	27.30%	31.40%
Geographic Concentration Risk | Australia
Schedule of Investments [Line Items]
Concentration risk (as percent)	0.20%	0.30%
Geographic Concentration Risk | Canada
Schedule of Investments [Line Items]
Concentration risk (as percent)	4.30%	4.40%
Geographic Concentration Risk | Cayman Islands
Schedule of Investments [Line Items]
Concentration risk (as percent)	0.00%	0.40%
Geographic Concentration Risk | Germany
Schedule of Investments [Line Items]
Concentration risk (as percent)	0.20%	0.20%
Geographic Concentration Risk | Guernsey
Schedule of Investments [Line Items]
Concentration risk (as percent)	1.10%	1.40%
Geographic Concentration Risk | Ireland
Schedule of Investments [Line Items]
Concentration risk (as percent)	0.10%	0.20%
Geographic Concentration Risk | Israel
Schedule of Investments [Line Items]
Concentration risk (as percent)	0.00%	0.80%
Geographic Concentration Risk | Norway
Schedule of Investments [Line Items]
Concentration risk (as percent)	0.90%	0.00%
Geographic Concentration Risk | Spain
Schedule of Investments [Line Items]
Concentration risk (as percent)	0.50%	0.00%
Geographic Concentration Risk | Sweden
Schedule of Investments [Line Items]
Concentration risk (as percent)	0.60%	0.00%
Geographic Concentration Risk | Switzerland
Schedule of Investments [Line Items]
Concentration risk (as percent)	0.20%	0.30%
Geographic Concentration Risk | United Kingdom
Schedule of Investments [Line Items]
Concentration risk (as percent)	5.70%	3.40%