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Summary of Significant Accounting Policies - Additional Information (Detail) | 12 Months Ended
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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

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- Definition The total amount of dividends declared in the period for each class of stock and the contractual amount of dividends (or interest on participating income bonds) that must be paid for the period (for example, unpaid cumulative dividends). Dividends declared in the current period do not include dividends declared in respect of prior-period unpaid cumulative dividends. Preferred dividends that are cumulative only if earned are deducted only to the extent that they are earned. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 60B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482689/260-10-45-60B + Details
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- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 49 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482785/280-10-55-49 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 18 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-18 + Details
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