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Commodities Held by Broker - Schedule of Realized and Unrealized Gains and Losses on Contracts (Details) - USD ($)	3 Months Ended		6 Months Ended
	Apr. 30, 2020	Apr. 30, 2019	Apr. 30, 2020	Apr. 30, 2019
Brokers and Dealers [Abstract]
Gross realized gains	$ 485,344	$ 171,955	$ 841,903	$ 714,551
Gross realized losses	(668,114)	(1,661,913)	(794,925)	(1,971,526)
Unrealized gain (loss)	666,901	(61,239)	(318,936)	(604,388)
Total	$ 484,131	$ (1,551,197)	$ (271,958)	$ (1,861,363)

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Amount of realized and unrealized gain (loss) on investment.

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The difference between the book value and the sale price of agreements to purchase or sell mineral resources, energy, and agricultural products at some future point. This element refers to the gain (loss) included in earnings and not to the cash proceeds.

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The difference between the book value and the sale price of options, swaps, futures, forward contracts, and other derivative instruments. This element refers to the gain (loss) included in earnings.

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The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

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