Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2016	Jul. 31, 2015	Jul. 31, 2016	Jul. 31, 2015	Oct. 31, 2015
Goodwill And Other Intangible Assets [Line Items]
Amortization expense	$ 4.2	$ 4.5	$ 12.7	$ 13.9
Future amortization expense, 2016	16.9		16.9
Future amortization expense, 2017	16.1		16.1
Future amortization expense, 2018	15.7		15.7
Future amortization expense, 2019	15.7		15.7
Future amortization expense, 2020	15.1		15.1
Flexible Products & Services
Goodwill And Other Intangible Assets [Line Items]
Accumulated goodwill impairment loss	$ 50.3		$ 50.3		$ 50.3