Investments at Fair Value - Summary of Geographic Composition of Investments at Fair Value (Details)		Mar. 31, 2024	Dec. 31, 2023
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		23.20%	16.00%
United States - Northeast
Schedule Of Available For Sale Securities [Line Items]
Investment fair value percentage		21.60%	23.10%
United States - South
Schedule Of Available For Sale Securities [Line Items]
Investment fair value percentage		10.90%	7.40%
United States - West
Schedule Of Available For Sale Securities [Line Items]
Investment fair value percentage		31.00%	40.30%
Canada
Schedule Of Available For Sale Securities [Line Items]
Investment fair value percentage		1.70%	1.90%
Finland
Schedule Of Available For Sale Securities [Line Items]
Investment fair value percentage	[1]	0.00%	0.00%
Germany
Schedule Of Available For Sale Securities [Line Items]
Investment fair value percentage		0.10%	0.30%
Luxembourg
Schedule Of Available For Sale Securities [Line Items]
Investment fair value percentage		0.10%	0.10%
Netherlands
Schedule Of Available For Sale Securities [Line Items]
Investment fair value percentage		0.10%	0.10%
Norway
Schedule Of Available For Sale Securities [Line Items]
Investment fair value percentage		4.20%	5.40%
Sweden
Schedule Of Available For Sale Securities [Line Items]
Investment fair value percentage		0.20%
United Kingdom
Schedule Of Available For Sale Securities [Line Items]
Investment fair value percentage		6.90%	5.40%

[1] Value rounds to less than 0.1%