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Long-Term Debt (United States Trade Accounts Receivable Credit Facility) - Additional Information (Detail) (USD $)	12 Months Ended	1 Months Ended
	Oct. 31, 2014	Sep. 30, 2013	Sep. 19, 2011
United States Trade Accounts Receivable Credit Facility [Member]
Debt Instrument [Line Items]
Amount borrowed under multi currency credit facility		170,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_LongtermDebtTypeAxis = us-gaap_SecuredDebtMember
Maturity date of credit facility	2016-09
Senior notes issued			$ 130,000,000us-gaap_DebtInstrumentFaceAmount / us-gaap_LongtermDebtTypeAxis = us-gaap_SecuredDebtMember
Maturity date of credit facility	Sep. 19, 2014
Maximum [Member]
Debt Instrument [Line Items]
Interest coverage ratio	3.00gef_DebtInstrumentCovenantInterestCoverageRatio / us-gaap_RangeAxis = us-gaap_MaximumMember
Maximum [Member] | United States Trade Accounts Receivable Credit Facility [Member]
Debt Instrument [Line Items]
Interest coverage ratio		3.00gef_DebtInstrumentCovenantInterestCoverageRatio / us-gaap_LongtermDebtTypeAxis = us-gaap_SecuredDebtMember / us-gaap_RangeAxis = us-gaap_MaximumMember

X

- Definition

Debt Instrument Covenant Interest Coverage Ratio

+ References

No definition available.

+ Details

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Namespace Prefix:	gef_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Debt Instrument Maturity Year And Month

+ References

No definition available.

+ Details

Name:	gef_DebtInstrumentMaturityYearAndMonth
Namespace Prefix:	gef_
Data Type:	xbrli:gYearMonthItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Line of credit facility expiry date.

+ References

No definition available.

+ Details

Name:	gef_LineOfCreditFacilityExpiryDate
Namespace Prefix:	gef_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

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

X

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_SecuredDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: