XML 42 R31.htm IDEA: XBRL DOCUMENT v3.25.2
Additional Valuation Information - Summary of the Tiered Valuation Input Levels (Detail) - USD ($)
Jun. 30, 2025
Dec. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
United States Treasury Obligations $ 393,253,144
Exchange-Traded Fund 215,248,830 215,371,200
Money Market Mutual Fund 787,085,414 661,273,167
Total Investments in Securities 1,002,334,244 1,269,897,511
Commodity Futures Contracts, Appreciation 40,173,166 27,889,813
Commodity Futures Contracts, Depreciation (19,485,079) (48,470,858)
Commodity Futures Contracts 20,688,087 (20,581,045)
Total Investments 1,023,022,331 1,249,316,466
Securities Investment [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total Investments in Securities 1,002,334,244 1,269,897,511
Level 1 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Exchange-Traded Fund 215,248,830 215,371,200
Money Market Mutual Fund 787,085,414 661,273,167
Total Investments in Securities 1,002,334,244 876,644,367
Commodity Futures Contracts, Appreciation 40,173,166 27,889,813
Commodity Futures Contracts, Depreciation (19,485,079) (48,470,858)
Commodity Futures Contracts 20,688,087 (20,581,045)
Total Investments $ 1,023,022,331 856,063,322
Level 2 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
United States Treasury Obligations   393,253,144
Total Investments in Securities   393,253,144
Total Investments   $ 393,253,144