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Derivative Instruments - Summary of Average Monthly Notional Value of Future Contracts Outstanding (Detail) - USD ($)
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Weighted Average [Member] | Commodity Futures Contract [Member]      
Derivative [Line Items]      
Average Notional Value $ 738,966,747 $ 875,688,978 $ 1,536,791,604