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Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($)
$ in Millions
 3 Months Ended
Jan. 31, 2017
Jan. 31, 2016
Oct. 31, 2016
Goodwill And Other Intangible Assets [Line Items]      
Amortization expense $ 3.8 $ 4.2  
Future amortization expense, 2017 13.4    
Future amortization expense, 2018 12.4    
Future amortization expense, 2019 12.3    
Future amortization expense, 2020 11.8    
Future amortization expense, 2021 10.2    
Flexible Products & Services      
Goodwill And Other Intangible Assets [Line Items]      
Accumulated goodwill impairment loss $ 50.3   $ 50.3