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Derivative Instruments - Summary of Average Monthly Notional Value of Future Contracts Outstanding (Detail) - USD ($)
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Weighted Average [Member] | Commodity Futures Contract [Member]    
Derivative [Line Items]    
Average Notional Value $ 1,309,229,394 $ 763,329,927