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Acquisitions and Divestitures - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended 12 Months Ended
Feb. 11, 2019
Oct. 31, 2020
Oct. 31, 2019
Oct. 31, 2020
Oct. 31, 2019
Oct. 31, 2018
Business Acquisition [Line Items]            
Goodwill   $ 1,518.4 $ 1,517.8 $ 1,518.4 $ 1,517.8 $ 776.0
Proceeds from Divestiture of Businesses       80.9 $ 1.5 $ 1.4
2020 Divestiture            
Business Acquisition [Line Items]            
Cash acquired       79.6    
Goodwill   35.6   35.6    
Proceeds from Divestiture of Businesses       85.0    
Preliminary adjustments   5.4   5.4    
Caraustar            
Business Acquisition [Line Items]            
Payments to acquire business $ 1,834.9          
Deferred tax liability,   14.6 $ 37.4      
Goodwill 752.5 $ 743.9   743.9    
Cash consideration $ 1,834.9     $ 1,834.9    
Buildings | Minimum            
Business Acquisition [Line Items]            
Useful life       30 years    
Buildings | Minimum | Caraustar            
Business Acquisition [Line Items]            
Useful life       1 year    
Buildings | Maximum            
Business Acquisition [Line Items]            
Useful life       40 years    
Buildings | Maximum | Caraustar            
Business Acquisition [Line Items]            
Useful life       20 years    
Machinery and equipment | Minimum            
Business Acquisition [Line Items]            
Useful life       5 years    
Machinery and equipment | Minimum | Caraustar            
Business Acquisition [Line Items]            
Useful life       1 year    
Machinery and equipment | Maximum            
Business Acquisition [Line Items]            
Useful life       15 years    
Machinery and equipment | Maximum | Caraustar            
Business Acquisition [Line Items]            
Useful life       15 years