Goodwill and Other Intangible Assets - Summary of Carrying Amount of Net Other Intangible Assets by Class (Detail) - USD ($) $ in Millions	Apr. 30, 2018	Oct. 31, 2017
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Gross Intangible Assets	$ 216.3	$ 218.6
Accumulated Amortization	125.6	120.6
Net Intangible Assets	90.7	98.0
Trademarks and patents
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Indefinite lived intangible assets	13.6	13.4
Customer relationships
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Gross Intangible Assets	167.1	170.2
Accumulated Amortization	103.1	99.7
Net Intangible Assets	64.0	70.5
Trademarks and patents
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Gross Intangible Assets	11.4	11.6
Accumulated Amortization	5.1	4.9
Net Intangible Assets	6.3	6.7
Other
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Gross Intangible Assets	24.2	23.4
Accumulated Amortization	17.4	16.0
Net Intangible Assets	$ 6.8	$ 7.4