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Canadian Dollar Deposits - Additional Information (Detail)	3 Months Ended	12 Months Ended
	Jan. 31, 2014 CAD	Oct. 31, 2013 CAD	Jan. 31, 2014 USD ($)	Oct. 31, 2013 USD ($)	Jan. 31, 2014 Redemptions payable [Member] USD ($)	Oct. 31, 2013 Redemptions payable [Member] USD ($)
Deposits [Line Items]
Canadian dollar principal deposits	24,859,149	59,661,957
Canadian dollar principal redemptions	64,633,787	198,873,188
Canadian dollar principal balance	313,225,273	352,999,911	$ 285,391,364	$ 338,495,383	$ 280,932,124	$ 338,495,383

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- 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

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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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