Financial Highlights and Senior Securities (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Jun. 30, 2025	Dec. 31, 2024	Jun. 30, 2024	Dec. 31, 2023
Investment Company, Financial Highlights [Roll Forward]
Net asset value, beginning of period (in usd per share)			$ 27.39	$ 26.66
Net investment income, basic (in usd per share)	$ 0.82	$ 0.91	2.43	2.68
Net change in unrealized and realized gain (loss) (in usd per share)			(0.52)	0.03
Net increase (decrease) in net assets resulting from operations (in usd per share)			1.91	2.71
Distributions from net investment income (in usd per share)			(2.31)	(2.31)
Net increase (decrease) in net assets from capital share transactions (in usd per share)			0.16	0.21
Total increase (decrease) in net assets (in usd per share)			(0.24)	0.61
Net asset value, ending of period (in usd per share)	27.15	27.27	27.15	27.27
Market value, end of period (in usd per share)	$ 26.07	$ 29.29	$ 26.07	$ 29.29
Shares outstanding end of period (in shares)	230,957,158	209,034,336	230,957,158	209,034,336		221,892,184
Total return based on NAV			7.40%	10.40%
Total return based on market value			(12.90%)	14.70%
Ratios:
Ratio of net expenses to average net assets			10.60%	11.10%
Ratio of net investment income to average net assets			11.70%	13.10%
Portfolio turnover rate			12.10%	5.30%
Supplemental Data:
Net assets, end of period	$ 6,269,576	$ 5,700,667	$ 6,269,576	$ 5,700,667	$ 6,288,296	$ 6,076,521	$ 5,394,573	$ 4,952,041
Asset coverage ratio	181.70%	189.00%	181.70%	189.00%		185.70%
Ratio of expenses to average net assets, before waivers			10.60%	11.10%