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Euro Deposits (Details Textual)	6 Months Ended	12 Months Ended
	Apr. 30, 2012 EUR (€)	Oct. 31, 2011 EUR (€)	Apr. 30, 2012 USD ($)	Oct. 31, 2011 USD ($)
Euro Deposits (Textual) [Abstract]
Euro principal deposits	€ 806,645,057	€ 2,535,042,636
Euro principal redemptions	801,640,421	2,629,658,330
Euro principal withdrawals	174,689	64,021
Euro principal balance	€ 189,104,596	€ 184,274,649	$ 250,289,323	$ 257,026,161

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Interest bearing demand account, euro principal balance.

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Interest bearing demand account, euro principal deposits.

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Interest bearing demand account, euro principal redemptions.

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Interest bearing demand account, euro principal withdrawals.

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