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ACQUISITIONS AND DIVESTITURES - Pro forma (Details) - Lee Container Acquisition - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended
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Jan. 31, 2023 | Jan. 31, 2022
Business Acquisition [Line Items] |  |
Pro forma net sales | $ 1,288.4 | $ 1,602.9
Pro forma net income attributable to Greif, Inc. | $ 102.2 | $ 9.5
Class A Common Stock |  |
Business Acquisition [Line Items] |  |
Basic earnings per share attributable to Greif, Inc. common shareholders: (in dollars per share) | $ 1.76 | $ 0.16
Diluted earnings per share attributable to Greif, Inc. common shareholders: (in dollars per share) | 1.75 | 0.17
Class B Common Stock |  |
Business Acquisition [Line Items] |  |
Basic earnings per share attributable to Greif, Inc. common shareholders: (in dollars per share) | 2.63 | 0.24
Diluted earnings per share attributable to Greif, Inc. common shareholders: (in dollars per share) | $ 2.63 | $ 0.24

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