XML 131 R105.htm IDEA: XBRL DOCUMENT v2.4.0.8

Quarterly Financial Data (Unaudited) - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	0 Months Ended
	Jul. 31, 2013	Dec. 16, 2013 Subsequent Event [Member] Class A Common Stock [Member] Shareholder	Dec. 16, 2013 Subsequent Event [Member] Class B Common Stock [Member] Shareholder
Aggregate amount of prior period error	$ 9.6
Number of stockholders		438	108

X

- Definition

Effect on statement of operation due to prior period errors.

+ References

No definition available.

+ Details

Name:	gef_EffectOnStatementOfOperationDueToPriorPeriodErrors
Namespace Prefix:	gef_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Number of stockholders.

+ References

No definition available.

+ Details

Name:	gef_NumberOfStockholders
Namespace Prefix:	gef_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration