Quarterly report pursuant to Section 13 or 15(d)

Cover Page

v3.23.3
Cover Page - shares
9 Months Ended
Sep. 30, 2023
Oct. 30, 2023
Cover [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Sep. 30, 2023  
Document Fiscal Year Focus 2023  
Document Fiscal Period Focus Q3  
Entity Registrant Name IANTHUS CAPITAL HOLDINGS, INC.  
Entity Central Index Key 0001643154  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status Yes  
Entity Filer Category Non-accelerated Filer  
Entity Shell Company false  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Interactive Data Current Yes  
Securities Act File Number 000-56228  
Entity Tax Identification Number 98-1360810  
Entity Address, Address Line One 214 King Street  
Entity Address, City or Town Suite 314  
Entity Address, State or Province ON  
Entity Address, Postal Zip Code M5H 3S6  
City Area Code 646  
Local Phone Number 518-9418  
Document Quarterly Report true  
Document Transition Report false  
Entity Incorporation, State or Country Code Z4  
Entity Common Stock, Shares Outstanding   6,510,526,890