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Canadian Dollar Deposits - Additional Information (Detail)	9 Months Ended	12 Months Ended
	Jul. 31, 2014 CAD	Oct. 31, 2013 CAD	Jul. 31, 2014 USD ($)		Oct. 31, 2013 USD ($)	Jul. 31, 2014 Redemptions Payable [Member] USD ($)	Oct. 31, 2013 Redemptions Payable [Member] USD ($)
Securities Financing Transaction [Line Items]
Canadian dollar principal deposits	39,774,638	59,661,957
Canadian dollar principal redemptions	104,408,425	198,873,188
Canadian dollar principal balance	288,366,124	352,999,911	$ 264,884,144	[1]	$ 338,495,383	$ 264,884,144	$ 338,495,383
[1] (Unaudited)

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

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 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 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

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