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ACQUISITIONS AND DIVESTITURES - Pro forma (Details) - Lee Container Acquisition - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jul. 31, 2023 | Jul. 31, 2022 | Jul. 31, 2023 | Jul. 31, 2022
Business Acquisition [Line Items] |  |  |  |
Pro forma net sales | $ 1,330.2 | $ 1,687.2 | $ 3,968.0 | $ 5,050.4
Pro forma net income attributable to Greif, Inc. | $ 86.0 | $ 144.2 | $ 298.4 | $ 285.7
Class A Common Stock |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Basic earnings per share attributable to Greif, Inc. common shareholders: (in dollars per share) | $ 1.50 | $ 2.43 | $ 5.16 | $ 4.80
Diluted earnings per share attributable to Greif, Inc. common shareholders: (in dollars per share) | 1.48 | 2.36 | 5.11 | 4.63
Class B Common Stock |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Basic earnings per share attributable to Greif, Inc. common shareholders: (in dollars per share) | 2.24 | 3.65 | 7.72 | 7.20
Diluted earnings per share attributable to Greif, Inc. common shareholders: (in dollars per share) | $ 2.24 | $ 3.59 | $ 7.72 | $ 6.98

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