EARNINGS PER SHARE - Computation of Earnings Per Share Basic and Diluted (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Apr. 30, 2022	Apr. 30, 2021	Apr. 30, 2022	Apr. 30, 2021
Numerator for basic and diluted EPS
Net income attributable to Greif, Inc.	$ 125.1	$ 149.8	$ 135.4	$ 173.2
Cash dividends	(27.4)	(26.3)	(54.6)	(52.2)
Undistributed earnings attributable to Greif, Inc.	$ 97.7	$ 123.5	$ 80.8	$ 121.0

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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