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Commodities Held by Broker - Schedule of Realized and Unrealized Gains and Losses (Details) - USD ($)	3 Months Ended		6 Months Ended
	Apr. 30, 2017	Apr. 30, 2016	Apr. 30, 2017	Apr. 30, 2016
Commodities Held By Broker - Schedule Of Realized And Unrealized Gains And Losses Details
Gross realized gains	$ 322,389	$ 445,314	$ 727,648	$ 565,912
Gross realized losses	(40,883)	(368,745)	(500,901)	(901,128)
Unrealized (loss) gain	(774,280)	687,536	(735,331)	689,088
Total	$ (492,774)	$ 764,105	$ (508,584)	$ 353,872

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- Definition

This item represents the net total realized and unrealized gain (loss) included in earnings for the period as a result of selling or holding marketable securities categorized as trading, available-for-sale, or held-to-maturity, including the unrealized holding gain (loss) of held-to-maturity securities transferred to the trading security category and the cumulative unrealized gain (loss) which was included in other comprehensive income (a separate component of shareholders' equity) for available-for-sale securities transferred to trading securities during the period. Additionally, this item would include any gains (losses) realized during the period from the sale of investments accounted for under the cost method of accounting and losses recognized for other than temporary impairments (OTTI) of the subject investments.

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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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