Investments at Fair Value - Summary of Industry Composition of Investments at Fair Value (Details)	Sep. 30, 2023	Dec. 31, 2022
Schedule Of Available For Sale Securities [Line Items]
Investment fair value percentage	100.00%	100.00%
Automotive
Schedule Of Available For Sale Securities [Line Items]
Investment fair value percentage	0.50%
Business Services
Schedule Of Available For Sale Securities [Line Items]
Investment fair value percentage	18.00%	0.80%
Chemicals
Schedule Of Available For Sale Securities [Line Items]
Investment fair value percentage	1.20%	2.40%
Communications
Schedule Of Available For Sale Securities [Line Items]
Investment fair value percentage	1.90%
Financial Services
Schedule Of Available For Sale Securities [Line Items]
Investment fair value percentage	14.00%	32.40%
Healthcare
Schedule Of Available For Sale Securities [Line Items]
Investment fair value percentage	5.80%
Human Resource Support Services
Schedule Of Available For Sale Securities [Line Items]
Investment fair value percentage	12.60%	18.00%
Insurance
Schedule Of Available For Sale Securities [Line Items]
Investment fair value percentage	2.80%
Internet Services
Schedule Of Available For Sale Securities [Line Items]
Investment fair value percentage	12.40%	0.70%
Manufacturing
Schedule Of Available For Sale Securities [Line Items]
Investment fair value percentage	14.60%	16.30%
Oil, Gas and Consumable Fuels
Schedule Of Available For Sale Securities [Line Items]
Investment fair value percentage	4.70%
Retail and Consumer Products
Schedule Of Available For Sale Securities [Line Items]
Investment fair value percentage	11.50%	29.40%