Consolidated Statement of Changes in Net Assets - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2025	Mar. 31, 2025	Dec. 31, 2024	Mar. 31, 2024	Dec. 31, 2023		Mar. 31, 2023		Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Beginning balance		$ 4,036,470		$ 1,817,067			$ 546,711		$ 4,036,470	$ 1,817,067	$ 546,711
Net investment income (loss)	$ 144,541	152,562	$ 104,995	72,722	$ 48,686	[1]	15,115	[1]	586,692	364,848	128,279
Net change in unrealized gains (losses) on investments and foreign currency translation									(80,914)	134,024	56,755
Net realized gains (losses) on investments and foreign currency transactions									7,315	7,068	(1,045)
Issuance of common shares, value										1,999,736	1,150,000
Stock issued in connection with dividend reinvestment plan									$ 177,722	$ 191,836	43,371
Stock issued in connection with dividend reinvestment plan, Shares									6,077,657	6,601,368
Dividends declared from net investment income									$ (556,797)	$ (478,109)	(107,004)
Ending balance	4,170,488		4,036,470		1,817,067				4,170,488	4,036,470	1,817,067
Common Shares
Beginning balance		$ 140		$ 65			$ 22		$ 140	$ 65	$ 22
Beginning balance, Shares		140,208,028		65,478,775			21,882,028		140,208,028	65,478,775	21,882,028
Issuance of common shares, value										$ 68	$ 42
Issuance of common shares, shares										68,127,885	41,957,644
Stock issued in connection with dividend reinvestment plan									$ 6	$ 7	$ 1
Stock issued in connection with dividend reinvestment plan, Shares									6,077,657	6,601,368	1,639,103
Ending balance	$ 146		$ 140		$ 65				$ 146	$ 140	$ 65
Ending balance,Shares	146,285,685		140,208,028		65,478,775				146,285,685	140,208,028	65,478,775
Paid in Capital in Excess of Par
Beginning balance		$ 3,923,739		$ 1,734,426			$ 542,596		$ 3,923,739	$ 1,734,426	$ 542,596
Issuance of common shares, value										1,999,668	1,149,958
Stock issued in connection with dividend reinvestment plan									177,716	191,829	43,370
Tax reclassification of stockholders' equity in accordance with GAAP									(1,183)	(2,184)	(1,498)
Ending balance	$ 4,100,272		$ 3,923,739		$ 1,734,426				4,100,272	3,923,739	1,734,426
Distributable Earnings
Beginning balance		$ 112,591		$ 82,576			$ 4,093		112,591	82,576	4,093
Net investment income (loss)									586,692	364,848	128,279
Net change in unrealized gains (losses) on investments and foreign currency translation									(80,914)	134,024	56,755
Net realized gains (losses) on investments and foreign currency transactions									7,315	7,068	(1,045)
Dividends declared from net investment income									(556,797)	(478,109)	(107,004)
Tax reclassification of stockholders' equity in accordance with GAAP									1,183	2,184	1,498
Ending balance	$ 70,070		$ 112,591		$ 82,576				$ 70,070	$ 112,591	$ 82,576

[1] Net investment income excludes $943 of expenses incurred at formation.