Financial Highlights - Weighted-Average Yield (Details)	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Investment Company [Abstract]
Weighted average portfolio yield on debt investments	13.40%	15.70%
Coupon income	10.50%	12.30%
Accretion of discount	1.00%	1.10%
Accretion of end-of-term payments	1.50%	1.80%
Impact of prepayments during the period	0.40%	0.50%