v3.26.3
Segment Reporting - Additional Information (Detail)
9 Months Ended
Sep. 30, 2026
Segment
Man AHL Diversified One LP [Member]  
Segment Reporting [Line Items]  
Number of reportable segment 1
Number of opertaing segment 1
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration] President and Vice President [Member]
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description assesses the performance and makes operating decisions of the Partnership primarily based on the Partnership’s net investment income/(loss) ("NII") and net income/(loss).
Man Ahl Diversified Trading Company L P [Member]  
Segment Reporting [Line Items]  
Number of reportable segment 1
Number of opertaing segment 1
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration] President and Vice President [Member]
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description assesses the performance and makes operating decisions of the Trading Company primarily based on the Trading Company’s net investment income/(loss) ("NII") and net income/(loss).