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Euro Deposits - Additional Information (Detail)	6 Months Ended	12 Months Ended
	Apr. 30, 2015 EUR (€)	Oct. 31, 2014 EUR (€)	Apr. 30, 2015 USD ($)		Oct. 31, 2014 USD ($)	Apr. 30, 2015 Subscriptions Receivable [Member] USD ($)	Oct. 31, 2014 Redemptions Payable [Member] USD ($)
Securities Financing Transaction [Line Items]
Euro principal deposits	€ 792,127,041fxe_ProceedsFromInterestBearingDepositsInBanks	€ 582,440,607fxe_ProceedsFromInterestBearingDepositsInBanks
Annual nominal interest rate on deposit			0.20%us-gaap_WeightedAverageRateForeignDeposit
Euro principal redemptions	629,876,774fxe_PaymentsForInterestBearingDepositsInBanks	567,615,398fxe_PaymentsForInterestBearingDepositsInBanks
Euro principal withdrawals	413,344fxe_PaymentsForInterestBearingDepositsInBanksWithdrawalsToPayExpenses	613,581fxe_PaymentsForInterestBearingDepositsInBanksWithdrawalsToPayExpenses
Euro deposits, interest bearing	€ 324,484,634us-gaap_InterestBearingDepositsInBanks	€ 162,647,711us-gaap_InterestBearingDepositsInBanks	$ 280,992,827us-gaap_InterestBearingDepositsInBanks	[1]	$ 216,126,592us-gaap_InterestBearingDepositsInBanks	$ 363,601,216us-gaap_InterestBearingDepositsInBanks / us-gaap_SecuritiesFinancingTransactionAxis = fxe_SubscriptionsReceivableMember	$ 203,781,392us-gaap_InterestBearingDepositsInBanks / us-gaap_SecuritiesFinancingTransactionAxis = fxe_RedemptionPayableMember
[1] (Unaudited)

X

- Definition

Payments for interest bearing deposits in banks.

+ References

No definition available.

+ Details

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- Definition

Payments For Interest Bearing Deposits In Banks Withdrawals To Pay Expenses

+ References

No definition available.

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X

- Definition

Proceeds from interest bearing deposits in banks.

+ References

No definition available.

+ Details

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Namespace Prefix:	fxe_
Data Type:	xbrli:monetaryItemType
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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

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- Definition

Weighted average interest rate for all deposit liabilities in foreign banking offices.

+ References

No definition available.

+ Details

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