Market price of common stock.

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- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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- Definition

Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

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Quarterly Financial Data (Unaudited) - Quarterly Results of Operations (Detail) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Oct. 31, 2014	Jul. 31, 2014	Apr. 30, 2014	Jan. 31, 2014	Oct. 31, 2013	Jul. 31, 2013	Apr. 30, 2013	Jan. 31, 2013	Oct. 31, 2014	Oct. 31, 2013	Oct. 31, 2012
Quarterly Results Of Operations [Line Items]
Net sales	$ 1,048.1us-gaap_SalesRevenueNet	$ 1,124.0us-gaap_SalesRevenueNet	$ 1,065.5us-gaap_SalesRevenueNet	$ 1,001.5us-gaap_SalesRevenueNet	$ 1,094.2us-gaap_SalesRevenueNet	$ 1,094.8us-gaap_SalesRevenueNet	$ 1,054.7us-gaap_SalesRevenueNet	$ 976.2us-gaap_SalesRevenueNet	$ 4,239.1us-gaap_SalesRevenueNet	$ 4,219.9us-gaap_SalesRevenueNet	$ 4,129.5us-gaap_SalesRevenueNet
Gross profit	202.9us-gaap_GrossProfit	217.7us-gaap_GrossProfit	204.3us-gaap_GrossProfit	186.1us-gaap_GrossProfit	226.1us-gaap_GrossProfit	217.2us-gaap_GrossProfit	202.4us-gaap_GrossProfit	186.5us-gaap_GrossProfit	811.0us-gaap_GrossProfit	832.2us-gaap_GrossProfit	779.5us-gaap_GrossProfit
Net income	(35.5)us-gaap_ProfitLoss	11.5us-gaap_ProfitLoss	37.1us-gaap_ProfitLoss	31.8us-gaap_ProfitLoss	35.2us-gaap_ProfitLoss	48.4us-gaap_ProfitLoss	39.7us-gaap_ProfitLoss	24.2us-gaap_ProfitLoss	44.9us-gaap_ProfitLoss	147.5us-gaap_ProfitLoss	123.6us-gaap_ProfitLoss
Net income attributable to Greif, Inc.	$ 8.7us-gaap_NetIncomeLoss	$ 13.7us-gaap_NetIncomeLoss	$ 38.4us-gaap_NetIncomeLoss	$ 30.7us-gaap_NetIncomeLoss	$ 38.0us-gaap_NetIncomeLoss	$ 46.2us-gaap_NetIncomeLoss	$ 37.6us-gaap_NetIncomeLoss	$ 22.9us-gaap_NetIncomeLoss	$ 91.5us-gaap_NetIncomeLoss	$ 144.7us-gaap_NetIncomeLoss	$ 118.1us-gaap_NetIncomeLoss
Class A Common Stock [Member]
Basic earnings per share attributable to Greif, Inc.:
EPS Basic	$ 0.15	$ 0.23	$ 0.65	$ 0.53	$ 0.65	$ 0.79	$ 0.64	$ 0.40	$ 1.56	$ 2.47	$ 2.03
Diluted earnings per share attributed to Greif, Inc.:
EPS Diluted	$ 0.15	$ 0.23	$ 0.65	$ 0.53	$ 0.65	$ 0.79	$ 0.64	$ 0.40	$ 1.56	$ 2.47	$ 2.03
Basic:
Basic shares	25,603,452	25,576,452	25,540,341	25,470,354	25,454,762	25,435,379	25,390,486	25,316,395	25,547,650	25,399,256	25,162,686
Diluted:
Diluted shares	25,554,934	25,581,952	25,560,846	25,495,642	25,473,695	25,464,664	25,432,388	25,380,502	25,552,986	25,422,322	25,232,856
Class B Common Stock [Member]
Basic earnings per share attributable to Greif, Inc.:
EPS Basic	$ 0.22	$ 0.35	$ 0.98	$ 0.78	$ 0.97	$ 1.18	$ 0.96	$ 0.58	$ 2.33	$ 3.70	$ 3.03
Diluted earnings per share attributed to Greif, Inc.:
EPS Diluted	$ 0.22	$ 0.35	$ 0.98	$ 0.78	$ 0.97	$ 1.18	$ 0.96	$ 0.58	$ 2.33	$ 3.70	$ 3.03
Basic:
Basic shares	22,119,966	22,119,966	22,119,966	22,119,966	22,119,966	22,119,966	22,119,966	22,119,966	22,100,000	22,100,000	22,100,000
Diluted:
Diluted shares	22,119,966	22,119,966	22,119,966	22,119,966	22,119,966	22,119,966	22,119,966	22,119,966	22,100,000	22,100,000	22,100,000
Maximum [Member] \| Class A Common Stock [Member]
Diluted:
Market price of common stock	$ 50.85	$ 56.53	$ 54.98	$ 56.47	$ 58.27	$ 56.38	$ 54.28	$ 47.93
Maximum [Member] \| Class B Common Stock [Member]
Diluted:
Market price of common stock	$ 55.00	$ 61.09	$ 59.20	$ 60.00	$ 60.00	$ 58.54	$ 57.44	$ 51.73
Minimum [Member] \| Class A Common Stock [Member]
Diluted:
Market price of common stock	$ 41.75	$ 49.70	$ 47.91	$ 50.35	$ 47.76	$ 47.35	$ 45.49	$ 39.80
Minimum [Member] \| Class B Common Stock [Member]
Diluted:
Market price of common stock	$ 47.90	$ 53.06	$ 53.03	$ 51.10	$ 52.02	$ 51.01	$ 48.24	$ 43.45
Close [Member] \| Class A Common Stock [Member]
Diluted:
Market price of common stock	$ 44.06	$ 50.18	$ 54.19	$ 50.63	$ 53.49	$ 55.32	$ 48.17	$ 46.98
Close [Member] \| Class B Common Stock [Member]
Diluted:
Market price of common stock	$ 50.20	$ 53.62	$ 58.81	$ 55.51	$ 56.85	$ 57.17	$ 51.79	$ 50.34