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Goodwill and Other Intangible Assets - Additional Information (Detail) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Oct. 31, 2018 USD ($) Segment | Jul. 31, 2017 Segment | Oct. 31, 2018 USD ($) Segment | Oct. 31, 2017 USD ($) | Oct. 31, 2016 USD ($)
Goodwill [Line Items] |  |  |  |  |
Number of operating segments (segment) | Segment | 8 |  | 8 |  |
Number of reportable business segment (segment) | Segment | 4 | 5 | 4 |  |
Accumulated goodwill impairment loss | $ 63.3 |  | $ 63.3 | $ 63.3 |
Reporting unit, percentage of fair value in excess of carrying amount | 20.00% |  | 20.00% |  |
Increase (decrease) in gross intangible assets |  |  | $ (11.0) |  |
Increase (decrease) in gross intangibles assets due to currency fluctuations |  |  | (3.7) |  |
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) |  |  | 2.9 |  |
Decrease in gross intangibles assets due to write-off |  |  | 4.4 |  |
Amortization expense |  |  | 15.2 | $ 13.5 | $ 16.8
Future amortization expense, 2018 | $ 15.3 |  | 15.3 |  |
Future amortization expense, 2019 | 15.0 |  | 15.0 |  |
Future amortization expense, 2020 | 14.4 |  | 14.4 |  |
Future amortization expense, 2021 | 12.8 |  | 12.8 |  |
Future amortization expense, 2022 | 8.8 |  | 8.8 |  |
Value of infinite lived intangible trademarks and trade names related to Blagden Express, Closed-loop, Box Board and Fustiplast | 13.3 |  | $ 13.3 |  |
Rigid Industrial Packaging & Services |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Number of operating segments (segment) | Segment |  |  | 5 |  |
Accumulated goodwill impairment loss | $ 13.0 |  | $ 13.0 |  |

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