CONSOLIDATED STATEMENTS OF CHANGES IN NET ASSETS - USD ($) $ in Thousands			3 Months Ended		9 Months Ended
	Jun. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
CHANGES IN NET ASSETS
Balances at the beginning			$ 2,546,266	$ 1,705,478	$ 2,059,727	$ 1,302,667
Net investment income			60,172	52,598	172,491	139,799
Net realized gain (loss)			(2,670)	250	(4,211)	570
Net change in unrealized gain (loss)			(49,423)	5,335	$ (72,842)	$ 12,531
Issuance of common stock (in shares)					69,237,928	53,382,846
Issuances of common stock			226,808	162,671	$ 713,565	$ 549,392
Repurchase of common stock (in shares)					(5,939,830)	(4,890,609)
Repurchases of common stock			(38,451)	(18,118)	$ (60,861)	$ (50,370)
Distributions declared to stockholders			(66,370)	(49,259)	$ (182,266)	$ (128,900)
Stock issued in connection with dividend reinvestment plan (in shares)	2,609,084	2,031,890			7,711,775	5,262,689
Stock issued in connection with dividend reinvestment plan	$ 26,952	$ 21,010	$ 28,800	$ 21,010	$ 79,529	$ 54,276
Balances at the end (in shares)		180,987,700	269,714,368	180,987,700	269,714,368	180,987,700
Balances at the end	$ 2,546,266	$ 1,879,965	$ 2,705,132	$ 1,879,965	$ 2,705,132	$ 1,879,965
Common Stock
CHANGES IN NET ASSETS
Balances at the beginning (in shares)			248,420,000	164,976,000	198,704,000	127,233,000
Balances at the beginning			$ 249	$ 165	$ 199	$ 127
Issuance of common stock (in shares)			22,257,000	15,732,000	69,237,000	53,383,000
Issuances of common stock			$ 22	$ 16	$ 69	$ 54
Repurchase of common stock (in shares)			(3,773,000)	(1,752,000)	(5,939,000)	(4,891,000)
Repurchases of common stock			$ (4)	$ (2)	$ (6)	$ (5)
Stock issued in connection with dividend reinvestment plan (in shares)			2,810,000	2,032,000	7,712,000	5,263,000
Stock issued in connection with dividend reinvestment plan			$ 3	$ 2	$ 8	$ 5
Balances at the end (in shares)	248,420,000	180,988,000	269,714,000	180,988,000	269,714,000	180,988,000
Balances at the end	$ 249	$ 181	$ 270	$ 181	$ 270	$ 181
Capital in excess of par value
CHANGES IN NET ASSETS
Balances at the beginning			2,533,609	1,670,075	2,018,583	1,282,378
Issuances of common stock			226,786	162,655	713,496	549,338
Repurchases of common stock			(38,447)	(18,116)	(60,855)	(50,365)
Stock issued in connection with dividend reinvestment plan			28,797	21,008	79,521	54,271
Balances at the end	2,533,609	1,835,622	2,750,745	1,835,622	2,750,745	1,835,622
Accumulated undistributed (overdistributed) earnings
CHANGES IN NET ASSETS
Balances at the beginning			12,408	35,238	40,945	20,162
Net investment income			60,172	52,598	172,491	139,799
Net realized gain (loss)			(2,670)	250	(4,211)	570
Net change in unrealized gain (loss)			(49,423)	5,335	(72,842)	12,531
Distributions declared to stockholders			(66,370)	(49,259)	(182,266)	(128,900)
Balances at the end	$ 12,408	$ 44,162	$ (45,883)	$ 44,162	$ (45,883)	$ 44,162