Investments at Fair Value - Summary of Geographic Composition of Investments at Fair Value (Details)		Dec. 31, 2023	Dec. 31, 2022
Schedule Of Available For Sale Securities [Line Items]
Investment fair value percentage		100.00%	100.00%
United States - Midwest
Schedule Of Available For Sale Securities [Line Items]
Investment fair value percentage		16.00%	18.10%
United States - Northeast
Schedule Of Available For Sale Securities [Line Items]
Investment fair value percentage		23.10%	45.50%
United States - South
Schedule Of Available For Sale Securities [Line Items]
Investment fair value percentage		7.40%	0.70%
United States - West
Schedule Of Available For Sale Securities [Line Items]
Investment fair value percentage		40.30%	32.50%
Canada
Schedule Of Available For Sale Securities [Line Items]
Investment fair value percentage		1.90%
Finland
Schedule Of Available For Sale Securities [Line Items]
Investment fair value percentage	[1]	0.00%
Germany
Schedule Of Available For Sale Securities [Line Items]
Investment fair value percentage		0.30%	0.40%
Luxembourg
Schedule Of Available For Sale Securities [Line Items]
Investment fair value percentage		0.10%	0.40%
Netherlands
Schedule Of Available For Sale Securities [Line Items]
Investment fair value percentage		0.10%
Norway
Schedule Of Available For Sale Securities [Line Items]
Investment fair value percentage		5.40%	2.40%
United Kingdom
Schedule Of Available For Sale Securities [Line Items]
Investment fair value percentage		5.40%

[1] Value rounds to less than 0.1%