ACQUISITIONS AND DIVESTITURES - Pro forma (Details) - Lee Container Acquisition $ / shares in Units, $ in Millions	3 Months Ended
	Jan. 31, 2023 USD ($) $ / shares
Business Acquisition [Line Items]
Pro forma net sales | $	$ 1,288.4
Pro forma net income attributable to Greif, Inc. | $	$ 102.2
Class A Common Stock
Business Acquisition [Line Items]
Basic earnings per share attributable to Greif, Inc. common shareholders: (in dollars per share)	$ 1.76
Diluted earnings per share attributable to Greif, Inc. common shareholders: (in dollars per share)	1.75
Class B Common Stock
Business Acquisition [Line Items]
Basic earnings per share attributable to Greif, Inc. common shareholders: (in dollars per share)	2.63
Diluted earnings per share attributable to Greif, Inc. common shareholders: (in dollars per share)	$ 2.63