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Restructuring Charges - Summary of Changes in Restructuring Liability (Detail) - USD ($)
$ in Millions
 12 Months Ended
Oct. 31, 2018
Oct. 31, 2017
Oct. 29, 2016
Restructuring Cost And Reserve [Line Items]      
Balance $ 0.6 $ 0.9  
Expenses Incurred 7.2 4.5 $ 3.5
Amounts Paid (7.3) (4.8)  
Balance 0.5 0.6 0.9
2018 Restructuring [Member]      
Restructuring Cost And Reserve [Line Items]      
Expenses Incurred 7.2    
Amounts Paid (6.9)    
Balance 0.3    
2017 Restructuring [Member]      
Restructuring Cost And Reserve [Line Items]      
Balance 0.6    
Expenses Incurred   1.5  
Amounts Paid (0.4) (0.9)  
Balance $ 0.2 0.6  
2016 Restructuring [Member]      
Restructuring Cost And Reserve [Line Items]      
Balance   0.9  
Expenses Incurred   3.0  
Amounts Paid   $ (3.9)  
Balance     $ 0.9