Additional Valuation Information - Summary of the Tiered Valuation Input Levels (Detail) - USD ($)	Dec. 31, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
United States Treasury Obligations	$ 294,000,317	$ 666,431,938
Exchange-Traded Fund		73,590,524
Money Market Mutual Fund	111,534,057	909,560,064
Total Investments in Securities	405,534,374	1,649,582,526
Commodity Futures Contracts, Unrealized Appreciation (Depreciation)	(4,579,458)	(7,688,710)
Total Investments	400,954,916	1,641,893,816
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Exchange-Traded Fund		73,590,524
Money Market Mutual Fund	111,534,057	909,560,064
Total Investments in Securities	111,534,057	983,150,588
Commodity Futures Contracts, Unrealized Appreciation (Depreciation)	(4,579,458)	(7,688,710)
Total Investments	106,954,599	975,461,878
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
United States Treasury Obligations	294,000,317	666,431,938
Total Investments in Securities	294,000,317	666,431,938
Total Investments	$ 294,000,317	$ 666,431,938