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ACQUISITIONS AND DIVESTITURES - Pro forma (Details) - Lee Container Acquisition - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Apr. 30, 2023 | Apr. 30, 2022 | Apr. 30, 2023 | Apr. 30, 2022
Business Acquisition [Line Items] |  |  |  |
Pro forma net sales | $ 1,326.2 | $ 1,738.9 | $ 2,637.8 | $ 3,363.2
Pro forma net income attributable to Greif, Inc. | $ 113.1 | $ 130.6 | $ 216.3 | $ 140.4
Class A Common Stock |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Basic earnings per share attributable to Greif, Inc. common shareholders: (in dollars per share) | $ 1.95 | $ 2.19 | $ 3.73 | $ 2.36
Diluted earnings per share attributable to Greif, Inc. common shareholders: (in dollars per share) | 1.93 | 2.18 | 3.70 | 2.35
Class B Common Stock |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Basic earnings per share attributable to Greif, Inc. common shareholders: (in dollars per share) | 2.92 | 3.29 | 5.58 | 3.53
Diluted earnings per share attributable to Greif, Inc. common shareholders: (in dollars per share) | $ 2.92 | $ 3.29 | $ 5.58 | $ 3.53

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