Additional Valuation Information - Summary of the Tiered Valuation Input Levels (Detail) - USD ($)	Jun. 30, 2022	Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
United States Treasury Obligations	$ 625,095,009	$ 92,006,259
Exchange-Traded Fund	49,843,200	49,855,000
Money Market Mutual Fund	1,038,685,834	576,603,758
Total Investments in Securities	1,713,624,043	718,465,017
Commodity Futures Contracts, Unrealized Appreciation (Depreciation)	30,015,687	(4,284,830)
Total Investments	1,743,639,730	714,180,187
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Exchange-Traded Fund	49,843,200	49,855,000
Money Market Mutual Fund	1,038,685,834	576,603,758
Total Investments in Securities	1,088,529,034	626,458,758
Commodity Futures Contracts, Unrealized Appreciation (Depreciation)	30,015,687	(4,284,830)
Total Investments	1,118,544,721	622,173,928
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
United States Treasury Obligations	625,095,009	92,006,259
Total Investments in Securities	625,095,009	92,006,259
Total Investments	$ 625,095,009	$ 92,006,259