Unaudited Consolidated Statements of Changes in Net Assets - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Investment Company, Net Assets [Roll Forward]
Beginning balance (in shares)			95,007,965
Beginning balance	$ 2,178,459	$ 1,639,197	$ 1,976,636	$ 1,306,995	$ 1,306,995
Net investment income	64,876	51,310	118,360	91,874
Net realized (loss) gain on investments / foreign currency transactions / forward currency contracts	(22,154)	(926)	4,056	(19,799)
Net unrealized appreciation (depreciation) on investments / foreign currency transactions / forward currency contracts	10,486	(9,330)	(13,765)	20,376
Purchases of shares in repurchase plan	(58,596)	(3,593)	(71,385)	(35,754)
Dividends / distributions	(60,929)	(46,354)	(116,298)	(84,565)
Issuance of common stock	$ 271,728	$ 129,307	$ 486,266	$ 480,484
Ending balance (in shares)	115,580,795	84,372,403	115,580,795	84,372,403	95,007,965
Ending balance	$ 2,383,870	$ 1,759,611	$ 2,383,870	$ 1,759,611	$ 1,976,636
Common Stock
Investment Company, Net Assets [Roll Forward]
Beginning balance (in shares)	104,987,948	78,202,476	95,007,965	62,714,487	62,714,487
Beginning balance	$ 105	$ 78	$ 95	$ 63	$ 63
Purchases of shares in repurchase plan (in shares)	(2,823,860)	(167,112)	(3,441,070)	(1,705,852)	(2,683,648)
Purchases of shares in repurchase plan	$ (3)		$ (3)	$ (2)
Dividends/distributions (in shares)	315,438	164,267	583,863	378,248
Dividends / distributions	$ 1		$ 1
Issuance of common stock (in shares)	13,101,269	6,172,772	23,430,037	22,985,520
Issuance of common stock	$ 13	$ 6	$ 23	$ 23
Ending balance (in shares)	115,580,795	84,372,403	115,580,795	84,372,403	95,007,965
Ending balance	$ 116	$ 84	$ 116	$ 84	$ 95
Additional Paid-In Capital
Investment Company, Net Assets [Roll Forward]
Beginning balance	2,160,942	1,604,474	1,953,628	1,281,007	1,281,007
Purchases of shares in repurchase plan	(58,593)	(3,593)	(71,382)	(35,752)
Dividends / distributions	6,543	3,440	12,118	7,906
Issuance of common stock	271,715	129,301	486,243	480,461
Ending balance	2,380,607	1,733,622	2,380,607	1,733,622	1,953,628
Total Distributable Earnings
Investment Company, Net Assets [Roll Forward]
Beginning balance	17,412	34,645	22,913	25,925	25,925
Net investment income	64,876	51,310	118,360	91,874
Net realized (loss) gain on investments / foreign currency transactions / forward currency contracts	(22,154)	(926)	4,056	(19,799)
Net unrealized appreciation (depreciation) on investments / foreign currency transactions / forward currency contracts	10,486	(9,330)	(13,765)	20,376
Dividends / distributions	(67,473)	(49,794)	(128,417)	(92,471)
Ending balance	$ 3,147	$ 25,905	$ 3,147	$ 25,905	$ 22,913