Inventories - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Costs of Revenues [Member]
Inventory [Line Items]
Excess plant capacity and manufacturing variances cost incurred	$ 2.6	$ 4.4	$ 7.0	$ 11.0