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Canadian Dollar Deposits (Details Textual)	9 Months Ended	12 Months Ended
	Jul. 31, 2012 CAD	Oct. 31, 2011 CAD	Jul. 31, 2012 USD ($)	Oct. 31, 2011 USD ($)
Canadian Dollar Deposits (Textual) [Abstract]
Canadian Dollar principal deposits	4,971,830	765,661,775
Canadian Dollar principal redemptions	119,323,913	715,943,476
Canadian Dollar principal balance	517,070,291	631,422,374	$ 515,883,758	$ 635,713,440

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- Definition

Payments for interest bearing deposits in banks.

+ References

No definition available.

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- Definition

Proceeds from interest bearing deposits in banks redemption.

+ References

No definition available.

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- Definition

For banks and other depository institutions (including Federal Reserve Banks, if applicable): Interest-bearing deposits in other financial institutions for relatively short periods of time including, for example, certificates of deposits, which are presented separately from cash on the balance sheet.

+ References

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

-Publisher AICPA

-Name Audit and Accounting Guide (AAG)

-Number AAG-DEP

-Paragraph 4, 11

-IssueDate 2006-05-01

-Chapter 6

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 2

-Article 9



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.2)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section 45

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=6476743&loc=d3e59706-112781

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