v3.26.1
Additional Valuation Information - Summary of the Tiered Valuation Input Levels (Detail) - USD ($)
Jun. 30, 2026
Dec. 31, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Exchange-Traded Fund $ 119,695,266 $ 119,785,970
Money Market Mutual Fund 944,583,531 469,899,174
Total Investments in Securities 1,064,278,797 589,685,144
Commodity Futures Contracts, Appreciation 24,251,692 13,033,497
Commodity Futures Contracts, Depreciation (36,701,935) (23,862,639)
Commodity Futures Contracts (12,450,243) (10,829,142)
Total Investments 1,051,828,554 578,856,002
Level 1 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Exchange-Traded Fund 119,695,266 119,785,970
Money Market Mutual Fund 944,583,531 469,899,174
Total Investments in Securities 1,064,278,797 589,685,144
Commodity Futures Contracts, Appreciation 24,251,692 13,033,497
Commodity Futures Contracts, Depreciation (36,701,935) (23,862,639)
Commodity Futures Contracts (12,450,243) (10,829,142)
Total Investments $ 1,051,828,554 $ 578,856,002