CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2023	Jul. 31, 2022
Net sales	$ 1,330.3	$ 1,622.1	$ 3,910.2	$ 4,853.7
Cost of products sold	1,023.3	1,275.2	3,039.8	3,878.4
Gross profit	307.0	346.9	870.4	975.3
Selling, general and administrative expenses	135.7	141.6	412.3	440.6
Acquisition and integration related costs	3.4	2.2	15.5	5.8
Restructuring charges	8.7	3.1	13.5	10.3
Non-cash asset impairment charges	1.6	0.7	3.4	63.1
Loss (gain) on disposal of properties, plants and equipment, net	1.7	(6.4)	(3.3)	(8.1)
Loss (gain) on disposal of businesses, net	0.3	0.0	(64.1)	(4.2)
Operating profit	155.6	205.7	493.1	467.8
Interest expense, net	25.3	14.0	71.5	44.3
Debt extinguishment charges	0.0	0.0	0.0	25.4
Other expense, net	3.4	7.3	9.6	4.9
Income before income tax expense and equity earnings of unconsolidated affiliates, net	126.9	184.4	412.0	393.2
Income tax expense	31.1	39.9	107.9	105.4
Equity earnings of unconsolidated affiliates, net of tax	(0.9)	(1.6)	(1.7)	(3.6)
Net income	96.7	146.1	305.8	291.4
Net income attributable to noncontrolling interests	(6.4)	(4.3)	(14.4)	(14.2)
Net income attributable to Greif, Inc.	$ 90.3	$ 141.8	$ 291.4	$ 277.2
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)	$ 1.57	$ 2.38	$ 5.03	$ 4.66
Diluted earnings per share attributable to Greif, Inc. common shareholders:
Diluted earnings per share attributable to Greif, Inc. common shareholders (in usd per share)	$ 1.55	$ 2.36	$ 4.99	$ 4.63
Weighted-average number of common shares outstanding:
Basic (in shares)	25,473,454	26,207,808	25,632,486	26,466,619
Diluted (in shares)	25,994,272	26,626,983	25,989,091	26,721,681
Cash dividends declared per common share:
Cash dividends declared per common share (in usd per share)	$ 0.50	$ 0.46	$ 1.50	$ 1.38
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)	2.35	3.58	7.54	6.98
Diluted earnings per share attributable to Greif, Inc. common shareholders:
Diluted earnings per share attributable to Greif, Inc. common shareholders (in usd per share)	$ 2.35	$ 3.58	$ 7.54	$ 6.98
Weighted-average number of common shares outstanding:
Basic (in shares)	21,339,943	22,007,725	21,519,665	22,007,725
Diluted (in shares)	21,339,943	22,007,725	21,519,665	22,007,725
Cash dividends declared per common share:
Cash dividends declared per common share (in usd per share)	$ 0.75	$ 0.69	$ 2.24	$ 2.06