v3.26.3
Document and Entity Information
 9 Months Ended
Sep. 30, 2026
shares
Cover [Abstract]  
Document Type 10-Q
Amendment Flag false
Document Period End Date Sep. 30, 2026
Document Fiscal Year Focus 2026
Document Fiscal Period Focus Q3
Entity Registrant Name MAN AHL DIVERSIFIED I LP
Entity Central Index Key 0001052354
Entity Current Reporting Status Yes
Entity Interactive Data Current Yes
Current Fiscal Year End Date --12-31
Entity Filer Category Non-accelerated Filer
Entity Small Business false
Entity Emerging Growth Company false
Entity Shell Company false
Trading Symbol MADL
Title of 12(b) Security none
Security Exchange Name NONE
Entity Common Stock, Shares Outstanding 0
Entity File Number 000-53043
Entity Incorporation, State or Country Code DE
Entity Tax Identification Number 06-1496634
Entity Address, Address Line One 1345 Avenue of the Americas
Entity Address, Address Line Two Floor 21
Entity Address, City or Town New York
Entity Address, State or Province NY
Entity Address, Postal Zip Code 10105
City Area Code 212
Local Phone Number 649-6600
Document Quarterly Report true
Document Transition Report false