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Goodwill and Other Intangible Assets - Additional Information (Details)
$ in Millions
12 Months Ended
Oct. 31, 2019
USD ($)
Segment
Oct. 31, 2018
USD ($)
Oct. 31, 2017
USD ($)
Segment
Aug. 01, 2019
Aug. 01, 2018
Goodwill [Line Items]          
Goodwill acquired $ 748.9 $ 0.0      
Reporting unit, percentage of fair value in excess of carrying amount       32.00% 20.00%
Number of operating segments | Segment 8   8    
Number of reportable business segment | Segment 4   4    
Accumulated goodwill impairment loss $ 63.3 63.3 $ 63.3    
Increase (decrease) in gross intangibles assets due to currency fluctuations (2.6)        
Increase (decrease) in gross intangible assets 747.3        
Intangible assets adjustments 0.3        
Amortization expense 53.2 15.2 $ 13.5    
Future amortization expense, 2020 69.3        
Future amortization expense, 2021 67.1        
Future amortization expense, 2022 59.1        
Future amortization expense, 2023 56.3        
Future amortization expense, 2024 52.9        
Value of infinite lived intangible trademarks and trade names related to Blagden Express, Closed-loop, Box Board and Fustiplast 13.1        
Tholu B.V.          
Goodwill [Line Items]          
Increase intangible assets 24.1        
Caraustar          
Goodwill [Line Items]          
Increase intangible assets 725.5        
Paper Packaging & Services          
Goodwill [Line Items]          
Goodwill acquired 726.6        
Rigid Industrial Packaging & Services          
Goodwill [Line Items]          
Goodwill acquired $ 22.3 $ 0.0      
Number of operating segments | Segment 5        
Accumulated goodwill impairment loss $ 13.0