v3.26.1
Document and Entity Information
Jul. 29, 2026
Cover [Abstract]  
Entity Registrant Name Diameter Credit Co
Amendment Flag false
Entity Central Index Key 0001916099
Document Type 8-K
Document Period End Date Jul. 29, 2026
Entity Incorporation State Country Code DE
Entity File Number 000-56624
Entity Tax Identification Number 88-1389797
Entity Address, Address Line One 50 Hudson Yards
Entity Address, Address Line Two Suite 6600A
Entity Address, City or Town New York
Entity Address, State or Province NY
Entity Address, Postal Zip Code 10001
City Area Code (212)
Local Phone Number 655-1419
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