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Property, Plant and Equipment - Summary of Property, Plant and Equipment (Detail) - USD ($)
$ in Millions
Apr. 30, 2019
Oct. 31, 2018
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 319.6 $ 314.8
Less: accumulated depreciation (113.1) (100.5)
Total property, plant and equipment, net 206.5 214.3
Land and Land Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 23.9 23.9
Building and Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 103.8 102.5
Machinery and Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 82.6 77.1
Rental Fleet [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 31.4 35.4
Computer Hardware and Software [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 56.6 56.1
Office Furniture and Fixtures [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 4.8 5.1
Construction in Progress [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 16.5 $ 14.7