Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Distribution, date of payment	Dec. 22, 2023
Distribution, date of record	Dec. 19, 2023
Average charges paid to broker per round-turn trade, maximum	$ 7	$ 7	$ 7
LME contracts payable	4,456,438	$ 50,841,104
Distributions	$ 599,093
General Shares [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Distribution, amount per share	$ 1.08926	$ 0.14467
Distributed earnings	$ 44	$ 6
Shares [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Distribution, amount per share	$ 1.08926	$ 0.14467
Distributed earnings	$ 84,798,891	$ 16,159,639