v3.26.1
Summary of Significant Accounting Policies - Additional Information (Detail)
3 Months Ended 6 Months Ended
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
Segment
Jun. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
Accounting Policies [Line Items]          
Number of Operating Segments | Segment     1    
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description     The Fund represents a single operating segment, in accordance with ASC 280, Segment Reporting. Subject to the oversight and, when applicable, approval of the Board of Managers, portfolio managers and senior executives at the Managing Owner act as the Fund’s chief operating decision maker (“CODM”), assessing performance and making decisions about resource allocation within the Fund. The CODM monitors the operating results as a whole, and the Fund’s long-term strategic asset allocation is determined in accordance with the terms of its prospectus based on a defined investment strategy. The financial information provided to and reviewed by the CODM is consistent with that presented in the Fund’s financial statements.    
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]     Managing Owner [Member]    
Distributed earnings declared $ 0 $ 0 $ 0 $ 0  
Average charges paid to broker per round-turn trade, maximum 9 $ 13 7 $ 13  
LME contracts receivable $ 4,432,803   $ 4,432,803   $ 2,743,572