Summary of Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2024 USD ($) Segment $ / shares	Dec. 31, 2023 USD ($) $ / shares	Dec. 31, 2022 USD ($) $ / shares
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Number of operating segments | Segment	1
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]	true
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false]	true
Accounting Standards Update [Extensible Enumeration]	us-gaap:AccountingStandardsUpdate202307Member
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description	primarily through enhanced disclosures about significant segment expenses, allowing financial statement users to better understand the components of a segment's profit or loss and assess potential future cash flows for each reportable segment and the entity as a whole thereby enabling better understanding of how an entity's segments impact overall performance. The Fund represents a single operating segment. Subject to the oversight and, when applicable, approval of the Board of Managers, the Fund's Managing Owner acts as the Fund's chief operating decision maker (“CODM”), assessing performance and making decisions about resource allocation within the Fund.
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]	Fund's Managing Owner [Member]
Distribution, date of payment	Dec. 27, 2024
Distribution, date of record	Dec. 23, 2024
Average charges paid to broker per round-turn trade, maximum	$ 7	$ 7	$ 7
LME contracts receivable	$ 235,303
LME contracts payable		$ 4,456,438
General Shares [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Distribution, amount per share | $ / shares	$ 1.11582	$ 1.08926	$ 0.14467
Distributed earnings	$ 45	$ 44	$ 6
Shares [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Distribution, amount per share | $ / shares	$ 1.11582	$ 1.08926	$ 0.14467
Distributed earnings	$ 67,507,110	$ 84,798,891	$ 16,159,639