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ACQUISITIONS AND DIVESTITURES - Pro Forma Results (Details) - Ipackchem Acquisition - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jul. 31, 2024 | Jul. 31, 2024
Business Combination [Line Items] |  |
Pro forma net sales | $ 1,454.2 | $ 4,120.0
Pro forma net income attributable to Greif, Inc. | $ 87.1 | $ 224.3
Class A Common Stock |  |
Business Combination [Line Items] |  |
Basic earnings per share attributable to Greif, Inc. common shareholders (in usd per share) | $ 1.51 | $ 3.89
Diluted earnings per share attributable to Greif, Inc. common shareholders (in usd per share) | 1.50 | 3.88
Class B Common Stock |  |
Business Combination [Line Items] |  |
Basic earnings per share attributable to Greif, Inc. common shareholders (in usd per share) | 2.26 | 5.83
Diluted earnings per share attributable to Greif, Inc. common shareholders (in usd per share) | $ 2.26 | $ 5.83

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