v3.26.1
Document and Entity Information
 6 Months Ended
Jun. 30, 2026
shares
Cover [Abstract]  
Document Type 10-Q
Amendment Flag false
Document Quarterly Report true
Document Transition Report false
Document Period End Date Jun. 30, 2026
Document Fiscal Period Focus Q2
Document Fiscal Year Focus 2026
Current Fiscal Year End Date --12-31
Entity File Number 000-54028
Entity Registrant Name MILLBURN MULTI-MARKETS FUND L.P.
Entity Central Index Key 0001468910
Entity Tax Identification Number 26-4038497
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One c/o MILLBURN RIDGEFIELD LLC
Entity Address, Address Line Two 55 West 46th Street
Entity Address, Address Line Three 31st Floor
Entity Address, City or Town New York
Entity Address, State or Province NY
Entity Address, Postal Zip Code 10036
City Area Code 212
Local Phone Number 332-7300
Entity Current Reporting Status Yes
Entity Interactive Data Current Yes
Entity Filer Category Non-accelerated Filer
Entity Small Business true
Entity Emerging Growth Company false
Entity Shell Company false
Entity Common Stock, Shares Outstanding 0