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RESTRUCTURING CHARGES - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Jul. 31, 2018 | Jul. 31, 2017 | Jul. 31, 2018 | Jul. 31, 2017 | Oct. 31, 2017
Restructuring and Related Costs [Line Items] |  |  |  |  |
Restructuring charges | $ 3.7 | $ 3.9 | $ 13.8 | $ 8.7 |
Amounts remaining to be incurred | 14.5 |  | 14.5 |  | $ 14.9
Employee Separation Costs |  |  |  |  |
Restructuring and Related Costs [Line Items] |  |  |  |  |
Restructuring charges | 3.1 |  | 11.4 |  |
Other Costs |  |  |  |  |
Restructuring and Related Costs [Line Items] |  |  |  |  |
Restructuring charges | $ 0.6 |  | $ 2.4 |  |

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