EARNINGS PER SHARE - Computation of Earnings Per Share Basic and Diluted (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2022	Jul. 31, 2021	Jul. 31, 2022	Jul. 31, 2021
Numerator for basic and diluted EPS
Net income attributable to Greif, Inc.	$ 141.8	$ 113.0	$ 277.2	$ 286.2
Cash dividends	(27.4)	(26.2)	(82.0)	(78.4)
Undistributed earnings attributable to Greif, Inc.	$ 114.4	$ 86.8	$ 195.2	$ 207.8