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Acquisitions and Divestitures - Schedule of Intangible Assets Assumed (Details) - Caraustar - USD ($)
$ in Millions
Oct. 31, 2019
Oct. 31, 2020
Feb. 11, 2019
Business Acquisition [Line Items]      
Preliminary Fair Value   $ 725.5 $ 717.1
Customer relationships      
Business Acquisition [Line Items]      
Preliminary Fair Value   708.0  
Weighted Average Estimated Useful Life 15 years    
Trademarks      
Business Acquisition [Line Items]      
Preliminary Fair Value   15.0  
Weighted Average Estimated Useful Life 3 years    
Other      
Business Acquisition [Line Items]      
Preliminary Fair Value   $ 2.5  
Weighted Average Estimated Useful Life 4 years 7 months 6 days