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Sponsor's Fee (Details Textual) (USD $)	9 Months Ended
	Jul. 31, 2012
Sponsors Fee (Textual) [Abstract]
Sponsors fee accrues daily and paid monthly, annual nominal Rate	0.40%
Maximum [Member]
Sponsors Fee (Textual) [Abstract]
Legal fees and expenses assumed by Sponsor	100,000
Minimum [Member]
Sponsors Fee (Textual) [Abstract]
Legal Fees and Expenses not assumed by Sponsor	100,000

X

- Definition

Annual nominal rate of sponsor fees.

+ References

No definition available.

+ Details

Name:	fxc_AnnualNominalRateOfSponsorFeesPercentage
Namespace Prefix:	fxc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Legal fees and expenses assumed sponsor.

+ References

No definition available.

+ Details

Name:	fxc_LegalFeesAndExpensesAssumedSponsor
Namespace Prefix:	fxc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Legal fees and expenses not assumed by sponsor.

+ References

No definition available.

+ Details

Name:	fxc_LegalFeesAndExpensesNotAssumedBySponsor
Namespace Prefix:	fxc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	fxc_SponsorsFeeTextualAbstract
Namespace Prefix:	fxc_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration