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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
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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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