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Summary of Significant Accounting Policies - Additional Information (Detail)
 12 Months Ended
Dec. 31, 2025
USD ($)
Segment
$ / shares
Dec. 31, 2024
USD ($)
$ / shares
Dec. 31, 2023
USD ($)
$ / shares
Summary Of Significant Accounting Policies [Line Items]      
Number of operating segment | 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.    
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration] Managing Owner [Member]    
Average charges paid to broker per round-turn trade, maximum $ 5.00 $ 5.00 $ 5.00
General Shares [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Total distributions paid to general shares $ 21 $ 36 $ 38
Distribution per share | $ / shares $ 0.53553 $ 0.89039 $ 0.96078
Shares [Member]      
Summary Of Significant Accounting Policies [Line Items]      
Total distributions paid to general shares $ 4,070,028 $ 2,715,689 $ 3,266,652
Distribution per share | $ / shares $ 0.53553 $ 0.89039 $ 0.96078