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Earnings Per Share - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified | 12 Months Ended | 36 Months Ended
--- | --- | ---
Oct. 31, 2014 | Oct. 31, 2013 | Oct. 31, 2012 | Oct. 31, 2014
Class of Stock [Line Items] |  |  |  |
Number of shares authorized to be purchased | 4,000,000 us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased |  |  | 4,000,000 us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased
Shares repurchased of common stock | 3,184,272 us-gaap_TreasuryStockNumberOfSharesHeld |  |  | 3,184,272 us-gaap_TreasuryStockNumberOfSharesHeld
Total cost of the shares repurchased |  |  | $ 0 us-gaap_TreasuryStockValueAcquiredCostMethod | $ 0.1 us-gaap_TreasuryStockValueAcquiredCostMethod
Antidilutive stock option | 0 us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount | 0 us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount | 0 us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount |
Class A Common Stock [Member] |  |  |  |
Class of Stock [Line Items] |  |  |  |
Calculation of EPS | (i) multiply 40 percent times the average Class A shares outstanding, then divide that amount by the product of 40 percent of the average Class A shares outstanding plus 60 percent of the average Class B shares outstanding to get a percentage, (ii) undistributed net income divided by the average Class A shares outstanding, (iii) multiply item (i) by item (ii), (iv) add item (iii) to the Class A cash dividend per share. Diluted shares are factored into the Class A calculation. |  |  |
Percentage of shares outstanding used in two class method calculation | 40.00%gef_PercentageOfSharesOutstandingUsedInTwoClassMethodCalculation / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember |  |  |
Cumulative dividends per share | 0.01 gef_CumulativeAnnualDividendsPerShareRate / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember |  |  |
Common stock dividend per share | 0.01 gef_AdditionalDividendPerShare / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember |  |  |
Voting rights | The Class A Common Stock has no voting rights unless four quarterly cumulative dividends upon the Class A Common Stock are in arrears. |  |  |
Repurchase of common stock | 0 us-gaap_StockRepurchasedDuringPeriodShares / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember |  |  |
Shares repurchased of common stock | 1,425,452 us-gaap_TreasuryStockNumberOfSharesHeld / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember |  |  | 1,425,452 us-gaap_TreasuryStockNumberOfSharesHeld / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember
Class B Common Stock [Member] |  |  |  |
Class of Stock [Line Items] |  |  |  |
Calculation of EPS | (i) multiply 60 percent times the average Class B shares outstanding, then divide that amount by the product of 40 percent of the average Class A shares outstanding plus 60 percent of the average Class B shares outstanding to get a percentage, (ii) undistributed net income divided by the average Class B shares outstanding, (iii) multiply item (i) by item (ii), (iv) add item (iii) to the Class B cash dividend per share. Class B diluted EPS is identical to Class B basic EPS. |  |  |
Percentage of shares outstanding used in two class method calculation | 60.00%gef_PercentageOfSharesOutstandingUsedInTwoClassMethodCalculation / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember |  |  |
Non-Cumulative dividends per share | 0.005 gef_NonCumulativeAnnualDividendsPerShare / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember |  |  |
Common stock dividend per share | 0.015 gef_AdditionalDividendPerShare / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember |  |  |
Voting rights | The Class B Common Stock has full voting rights. |  |  |
Repurchase of common stock | 0 us-gaap_StockRepurchasedDuringPeriodShares / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember |  |  |
Shares repurchased of common stock | 1,758,820 us-gaap_TreasuryStockNumberOfSharesHeld / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember |  |  | 1,758,820 us-gaap_TreasuryStockNumberOfSharesHeld / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember

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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Antidilution -URI http://asc.fasb.org/extlink&oid=6505113 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Diluted Earnings Per Share -URI http://asc.fasb.org/extlink&oid=6510752 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Contingent Stock Agreement -URI http://asc.fasb.org/extlink&oid=6508534 + Details
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- Definition Disclosure of the methodology and assumptions used in the reconciliation of earnings per share, which may include the individual income and share amount effects of all securities that affect earnings per share, the effect that has been given to preferred dividends in arriving at income available to common stockholders in computing basic earnings per share, securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic EPS in the future that were not included in the computation of diluted EPS because to do so would have been antidilutive for the period(s) presented and a description of any transaction that occurs after the end of the most recent period but before issuance of the financial statements that would have changed materially the number of common shares or potential common shares outstanding at the end of the period if the transaction had occurred before the end of the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 + Details
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