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Canadian Dollar Deposits - Additional Information (Detail)	9 Months Ended	12 Months Ended
	Jul. 31, 2013 CAD	Oct. 31, 2012 CAD	Jul. 31, 2013 USD ($)	Oct. 31, 2012 USD ($)
Deposits [Abstract]
Canadian dollar principal deposits	39,774,638	14,915,489
Canadian dollar principal redemptions	149,154,891	154,126,721
Canadian dollar principal balance	382,830,889	492,211,142	$ 372,385,476	$ 492,457,371

X

- Definition

Proceeds From Interest Bearing Deposits In Banks

+ References

No definition available.

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- Definition

Proceeds From Interest Bearing Deposits In Banks Redemption

+ References

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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 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 2: 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



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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 2

-Article 9

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