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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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- Definition

Amount of expected cost remaining for the specified restructuring cost.

+ References

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- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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