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Canadian Dollar Deposits - Additional Information (Detail)	6 Months Ended	12 Months Ended
	Apr. 30, 2015 CAD	Oct. 31, 2014 CAD	Apr. 30, 2015 USD ($)		Oct. 31, 2014 USD ($)	Apr. 30, 2015 Subscription Receivable [Member] USD ($)	Oct. 31, 2014 Redemptions Payable [Member] USD ($)
Securities Financing Transaction [Line Items]
Canadian dollar principal deposits	109,370,165fxc_ProceedsFromInterestBearingDepositsInBanks	39,774,638fxc_ProceedsFromInterestBearingDepositsInBanks
Canadian dollar principal redemptions	119,323,116fxc_ProceedsFromInterestBearingDepositsInBanksRedemption	109,380,254fxc_ProceedsFromInterestBearingDepositsInBanksRedemption
Canadian dollar principal balance	273,413,072us-gaap_InterestBearingDepositsInBanks	283,394,295us-gaap_InterestBearingDepositsInBanks	217,520,686us-gaap_InterestBearingDepositsInBanks	[1]	251,358,636us-gaap_InterestBearingDepositsInBanks	225,728,027us-gaap_InterestBearingDepositsInBanks / us-gaap_SecuritiesFinancingTransactionAxis = fxc_SubscriptionReceivableMember	251,358,636us-gaap_InterestBearingDepositsInBanks / us-gaap_SecuritiesFinancingTransactionAxis = fxc_RedemptionPayableMember
Canadian dollar withdrawals	28,272fxc_PaymentsForInterestBearingDepositsInBanksWithdrawalsToPayExpenses
[1] (Unaudited)

X

- Definition

Payments for interest bearing deposits in banks withdrawals to pay expenses.

+ References

No definition available.

+ Details

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Namespace Prefix:	fxc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Proceeds from interest bearing deposits in banks.

+ References

No definition available.

+ Details

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Namespace Prefix:	fxc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Proceeds from interest bearing deposits in banks redemption.

+ References

No definition available.

+ Details

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

X

- 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

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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- Details

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