EARNINGS PER SHARE - Computation of Earnings Per Share Basic and Diluted (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Apr. 30, 2019 |
Apr. 30, 2018 |
Apr. 30, 2019 |
Apr. 30, 2018 |
|
| Numerator for basic and diluted EPS | ||||
| Net income attributable to Greif, Inc. | $ 13.6 | $ 45.1 | $ 43.3 | $ 101.6 |
| Cash dividends | (26.1) | (24.8) | (51.8) | (49.3) |
| Undistributed net income (loss) attributable to Greif, Inc. | $ (12.5) | $ 20.3 | $ (8.5) | $ 52.3 |