FINANCIAL HIGHLIGHTS - Financial Highlights (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025	Sep. 30, 2025	Jun. 30, 2025	Dec. 31, 2024
Investment Company, Financial Highlights [Roll Forward]
Net asset value, beginning of period (in dollars per share)	$ 19.94	$ 19.89
Issuances of common stock (in dollars per share)	0	0.05
Net investment income for period (in dollars per share)	0.55	0.54
Net realized and unrealized gains (losses) for period (in dollars per share)	(0.42)	(0.18)
Net increase in stockholders' equity resulting from operations (in dollars per share)	0.13	0.41
Total distributions to stockholders (in dollars per share)	(0.48)	(0.48)
Net asset value, end of period (in dollars per share)	19.59	19.82
Per share market value at end of period (in dollars per share)	$ 18.02	$ 22.16	$ 20.23			$ 21.89
Total return based on market value	(8.53%)	3.52%
Total return based on net asset value	0.65%	2.06%
Shares outstanding at end of period (in shares)	718	690	718
Ratio/Supplemental Data:
Net assets at end of period	$ 14,065	$ 13,672	$ 14,318	$ 14,322	$ 14,034	$ 13,355
Ratio of operating expenses to average net assets	10.27%	10.81%
Ratio of net investment income to average net assets	11.36%	10.96%
Portfolio turnover rate	42.00%	39.00%