CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2022	Apr. 30, 2021	Apr. 30, 2022	Apr. 30, 2021
Net sales	$ 1,667.3	$ 1,340.6	$ 3,231.6	$ 2,487.1
Cost of products sold	1,328.6	1,074.7	2,603.2	2,009.0
Gross profit	338.7	265.9	628.4	478.1
Selling, general and administrative expenses	147.4	146.8	299.0	281.1
Restructuring charges	3.7	12.0	7.2	15.1
Timberland gains	0.0	(95.7)	0.0	(95.7)
Integration related costs	2.0	1.8	3.6	3.8
Non-cash asset impairment charges	0.0	0.2	62.4	1.5
(Gain) loss on disposal of properties, plants and equipment, net	(0.3)	0.1	(1.7)	1.7
(Gain) loss on disposal of businesses, net		0.1	(4.2)	0.0
Operating profit	190.1	200.6	262.1	270.6
Interest expense, net	13.2	26.7	30.3	51.9
Debt extinguishment charges	25.4	0.0	25.4	0.0
Non-cash pension settlement charges	0.0	0.1	0.0	8.6
Other (income) expense, net	(4.4)	2.8	(2.4)	2.8
Income before income tax expense and equity earnings of unconsolidated affiliates, net	155.9	171.0	208.8	207.3
Income tax expense	29.9	17.3	65.5	23.4
Equity earnings of unconsolidated affiliates, net of tax	(0.7)	(0.3)	(2.0)	(1.0)
Net income	126.7	154.0	145.3	184.9
Net income attributable to noncontrolling interests	(1.6)	(4.2)	(9.9)	(11.7)
Net income attributable to Greif, Inc.	$ 125.1	$ 149.8	$ 135.4	$ 173.2
Class A Common Stock
Basic earnings per share attributable to Greif, Inc. common shareholders:
Basic earnings per share attributable to Greif, Inc. common shareholders (in usd per share)	$ 2.11	$ 2.51	$ 2.28	$ 2.91
Diluted earnings per share attributable to Greif, Inc. common shareholders:
Diluted earnings per share attributable to Greif, Inc. common shareholders (in usd per share)	$ 2.09	$ 2.51	$ 2.27	$ 2.91
Weighted-average number of common shares outstanding:
Basic (in shares)	26,618,116	26,544,197	26,596,024	26,500,134
Diluted (in shares)	26,813,014	26,664,247	26,776,546	26,602,750
Cash dividends declared per common share:
Cash dividends declared per common share (in usd per share)	$ 0.46	$ 0.44	$ 0.92	$ 0.88
Class B Common Stock
Basic earnings per share attributable to Greif, Inc. common shareholders:
Basic earnings per share attributable to Greif, Inc. common shareholders (in usd per share)	3.15	3.77	3.40	4.36
Diluted earnings per share attributable to Greif, Inc. common shareholders:
Diluted earnings per share attributable to Greif, Inc. common shareholders (in usd per share)	$ 3.15	$ 3.77	$ 3.40	$ 4.36
Weighted-average number of common shares outstanding:
Basic (in shares)	22,007,725	22,007,725	22,007,725	22,007,725
Diluted (in shares)	22,007,725	22,007,725	22,007,725	22,007,725
Cash dividends declared per common share:
Cash dividends declared per common share (in usd per share)	$ 0.69	$ 0.66	$ 1.37	$ 1.31