Consolidated Statement of Changes in Net Assets - USD ($) $ in Thousands				12 Months Ended			24 Months Ended
		Dec. 31, 2021		Dec. 31, 2023	Dec. 31, 2022		Dec. 31, 2023
Beginning Balance, Shares				22,126,135	12,000,000		12,000,000
Beginning Balance, Net assets				$ 481,846	$ 301,998	[1]	$ 301,998	[1]
Operations:
Net investment income		$ 294		96,142	39,352
Net realized gain		79		2,439	3,523
Net change in unrealized appreciation (depreciation)		1,625		37,095	(51,283)
Net increase (decrease) in net assets resulting from shareholder distributions		1,998	[2]	135,676	(8,408)
Shareholder distributions:
Distributions paid or accrued/Distributions to shareholders				(96,770)	(44,967)
Net increase (decrease) in net assets resulting from shareholder distributions				(96,770)	(44,967)
Capital Share Transactions:
Common Shares issued from reinvestment of distributions, shares							5,406,757
Common Shares issued from reinvestment of distributions				81,084	43,223		$ 124,305
Issuance of preferred shares	[3]			$ 750
Issuance of common shares, shares				100,000,000
Issuance of common shares		300,000		$ 335,000	190,000
Net increase (decrease) for the period		$ 301,998		$ 455,740	$ 179,848
Ending Balance, Shares		12,000,000		40,279,212	22,126,135		40,279,212
Ending Balance, Net assets		$ 301,998	[1]	$ 937,586	$ 481,846		$ 937,586
Preferred Shares
Capital Share Transactions:
Issuance of preferred shares, shares	[3]			250
Net increase (decrease) for the period, shares				250
Ending Balance, Shares				250			250
Common Shares
Beginning Balance, Shares				22,126,135	12,000,000	[1]	12,000,000	[1]
Beginning Balance, Net assets				$ 22	$ 12	[1]	$ 12	[1]
Capital Share Transactions:
Common Shares issued from reinvestment of distributions, shares				3,568,598	1,838,162
Common Shares issued from reinvestment of distributions				$ 3	$ 2
Issuance of common shares, shares		12,000,000		14,584,479	8,287,973
Issuance of common shares		$ 12		$ 15	$ 8
Net increase (decrease) for the period, shares		12,000,000		18,153,077	10,126,135
Net increase (decrease) for the period		$ 12		$ 18	$ 10
Ending Balance, Shares		12,000,000	[1]	40,279,212	22,126,135		40,279,212
Ending Balance, Net assets		$ 12	[1]	$ 40	$ 22		$ 40
Paid-in-Capital in Excess of Par Value
Beginning Balance, Net assets				535,300	299,988	[1]	299,988	[1]
Capital Share Transactions:
Common Shares issued from reinvestment of distributions				81,081	43,221
Issuance of preferred shares	[3]			750
Issuance of common shares		299,988		334,985	189,992
Tax reclassification of shareholder's equity in accordance with generally accepted accounting principles				773	2,099
Net increase (decrease) for the period		299,988		417,589	235,312
Ending Balance, Net assets		299,988	[1]	952,889	535,300		952,889
Accumulated Earnings (Loss), Net of Distributions
Beginning Balance, Net assets				(53,476)	1,998	[1]	1,998	[1]
Operations:
Net investment income		294		96,142	39,352
Net realized gain		79		2,439	3,523
Net change in unrealized appreciation (depreciation)		1,625		37,095	(51,283)
Net increase (decrease) in net assets resulting from shareholder distributions		1,998		135,676	(8,408)
Shareholder distributions:
Distributions paid or accrued/Distributions to shareholders				(96,770)	(44,967)
Net increase (decrease) in net assets resulting from shareholder distributions				(96,770)	(44,967)
Capital Share Transactions:
Tax reclassification of shareholder's equity in accordance with generally accepted accounting principles				(773)	(2,099)
Net increase (decrease) for the period		1,998		38,133	(55,474)
Ending Balance, Net assets		$ 1,998	[1]	$ (15,343)	$ (53,476)		$ (15,343)

[1] The Company converted from MSD Investment, LLC to MSD Investment Corp. on January 1, 2022.

[2] The Company was initially capitalized and commenced operations on December 21, 2021.

[3] Issuance of preferred shares par value is zero due to rounding.