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EARNINGS PER SHARE - Computation of Earnings Per Share Basic and Diluted (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2025	Apr. 30, 2024	Apr. 30, 2025	Apr. 30, 2024
Numerator for basic and diluted EPS
Net income attributable to Greif, Inc.	$ 47.3	$ 44.4	$ 55.9	$ 111.6
Cash dividends	(31.4)	(30.0)	(62.4)	(59.7)
Undistributed earnings attributable to Greif, Inc.	$ 15.9	$ 14.4	$ (6.5)	$ 51.9

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Undistributed net income attributable to Greif.

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Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.

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