v3.26.1
Document and Entity Information
Jun. 09, 2026
Cover [Abstract]  
Amendment Flag false
Entity Central Index Key 0001849894
Document Type 8-K
Document Period End Date Jun. 09, 2026
Entity Registrant Name MSD INVESTMENT CORP.
Entity Incorporation State Country Code MD
Entity File Number 814-01481
Entity Tax Identification Number 87-4195402
Entity Address, Address Line One 550 Madison Ave
Entity Address, Address Line Two 20th Floor
Entity Address, City or Town New York
Entity Address, State or Province NY
Entity Address, Postal Zip Code 10022
City Area Code 212
Local Phone Number 303-4728
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Entity Emerging Growth Company true
Entity Ex Transition Period false