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Earnings Per Share - Computation of Class Based Basic and Diluted Earnings Per Share (Detail)	12 Months Ended
	Oct. 31, 2015
Class A Common Stock [Member]
Class of Stock [Line Items]
Basic and Diluted EPS, class based	40.00%
Class B Common Stock [Member]
Class of Stock [Line Items]
Basic and Diluted EPS, class based	60.00%

X

- Definition

Percentage of shares outstanding used in two class method calculation.

+ References

No definition available.

+ Details

Name:	gef_PercentageOfSharesOutstandingUsedInTwoClassMethodCalculation
Namespace Prefix:	gef_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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

X

- Details

Name:	us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassBMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: