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Sponsor's Fee - Additional Information (Detail) (USD $)	6 Months Ended
	Apr. 30, 2015
Component Of Other Income And Expense [Line Items]
Sponsor's fee accrues daily and paid monthly, annual nominal Rate	0.40%fxc_AnnualNominalRateOfSponsorFeesPercentage
Maximum [Member]
Component Of Other Income And Expense [Line Items]
Legal fees and expenses assumed sponsor	100,000fxc_LegalFeesAndExpensesAssumedSponsor / us-gaap_RangeAxis = us-gaap_MaximumMember
Minimum [Member]
Component Of Other Income And Expense [Line Items]
Legal fees and expenses not assumed by sponsor	100,000fxc_LegalFeesAndExpensesNotAssumedBySponsor / us-gaap_RangeAxis = us-gaap_MinimumMember

X

- Definition

Annual nominal rate of sponsor fees percentage.

+ References

No definition available.

+ Details

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

X

- Details

Name:	fxc_ComponentOfOtherIncomeAndExpenseLineItems
Namespace Prefix:	fxc_
Data Type:	xbrli:stringItemType
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:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: