Condensed Consolidated Statements of Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2017	Jul. 31, 2016	Jul. 31, 2017	Jul. 31, 2016
Net sales	$ 961.8	$ 845.0	$ 2,670.1	$ 2,456.0
Cost of products sold	774.7	668.5	2,137.8	1,954.5
Gross profit	187.1	176.5	532.3	501.5
Selling, general and administrative expenses	92.6	92.6	286.2	280.3
Restructuring charges	3.9	10.2	8.7	17.9
Non-cash asset impairment charges	2.0	4.1	5.9	44.9
Pension settlement charge	1.0	0.0	25.6	0.0
Gain on disposal of properties, plants and equipment, net	(1.1)	(0.7)	(3.9)	(9.5)
Gain on disposal of businesses, net	(0.8)	(1.3)	(2.2)	(4.1)
Operating profit	89.5	71.6	212.0	172.0
Interest expense, net	13.7	19.8	46.7	58.2
Other expense, net	1.4	2.7	8.2	7.4
Income before income tax expense and equity earnings of unconsolidated affiliates, net	74.4	49.1	157.1	106.4
Income tax expense	27.2	3.5	62.0	38.2
Equity earnings of unconsolidated affiliates, net of tax	(0.3)	(0.8)	(0.3)	(0.8)
Net income	47.5	46.4	95.4	69.0
Net income attributable to noncontrolling interests	(3.6)	(0.3)	(10.1)	(2.6)
Net income attributable to Greif, Inc.	$ 43.9	$ 46.1	$ 85.3	$ 66.4
Class A Common Stock
Basic earnings per share attributable to Greif, Inc. common shareholders:
Basic earnings per share attributable to Greif, Inc. common shareholders (usd per share)	$ 0.74	$ 0.78	$ 1.45	$ 1.13
Diluted earnings per share attributable to Greif, Inc. common shareholders:
Diluted earnings per share attributable to Greif, Inc. common shareholders (usd per share)	$ 0.74	$ 0.78	$ 1.45	$ 1.13
Weighted-average number of common shares outstanding:
Weighted-average number of common shares outstanding, basic (shares)	25,834,636	25,781,146	25,815,533	25,746,797
Weighted-average number of common shares outstanding, diluted (shares)	25,835,294	25,783,184	25,818,817	25,747,146
Cash dividends declared per common share:
Cash dividends declared per common share (usd per share)	$ 0.42	$ 0.42	$ 1.26	$ 1.26
Class B Common Stock
Basic earnings per share attributable to Greif, Inc. common shareholders:
Basic earnings per share attributable to Greif, Inc. common shareholders (usd per share)	1.12	1.18	2.17	1.69
Diluted earnings per share attributable to Greif, Inc. common shareholders:
Diluted earnings per share attributable to Greif, Inc. common shareholders (usd per share)	$ 1.12	$ 1.18	$ 2.17	$ 1.69
Weighted-average number of common shares outstanding:
Weighted-average number of common shares outstanding, basic (shares)	22,000,000	22,000,000	22,000,000	22,100,000
Weighted-average number of common shares outstanding, diluted (shares)	22,000,000	22,000,000	22,000,000	22,100,000
Cash dividends declared per common share:
Cash dividends declared per common share (usd per share)	$ 0.63	$ 0.63	$ 1.88	$ 1.88