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EARNINGS PER SHARE - Computation of Earnings Per Share Basic and Diluted (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2018	Jul. 31, 2017	Jul. 31, 2018	Jul. 31, 2017
Numerator for basic and diluted EPS
Net income attributable to Greif, Inc.	$ 67.7	$ 43.9	$ 169.3	$ 85.3
Cash dividends	(24.8)	(24.7)	(74.0)	(73.9)
Undistributed net income (loss) attributable to Greif, Inc.	$ 42.9	$ 19.2	$ 95.3	$ 11.4

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Undistributed net income attributable to Greif.

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Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.

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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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