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GOODWILL AND OTHER INTANGIBLE ASSETS - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Apr. 30, 2020 | Apr. 30, 2019 | Apr. 30, 2020 | Apr. 30, 2019
Goodwill [Line Items] |  |  |  |
Goodwill allocated to divestitures |  |  | $ 35.6 |
Decrease in gross intangible assets |  |  | 7.5 |
Finite lived intangible assets currency fluctuations |  |  | 5.0 |
Write-off of fully-amortized intangible asset |  |  | 2.5 |
Amortization of intangible assets | $ 17.4 | $ 14.7 | 34.9 | $ 18.4
Future amortization expense, 2020 | 69.2 |  | 69.2 |
Future amortization expense, 2021 | 66.7 |  | 66.7 |
Future amortization expense, 2022 | 58.8 |  | 58.8 |
Future amortization expense, 2023 | 56.0 |  | 56.0 |
Future amortization expense, 2024 | $ 52.7 |  | 52.7 |
Paper Packaging & Services |  |  |  |
Goodwill [Line Items] |  |  |  |
Goodwill allocated to divestitures |  |  | $ 35.6 |

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