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Business Combinations - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended
Jan. 31, 2020
Aug. 01, 2019
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Business Acquisition [Line Items]          
Purchase price of business acquisition     $ 42.1 $ 2.0  
Goodwill     1,464.1   $ 1,477.9
Net sales     1,594.6 1,501.6  
Income from operations     $ 160.0 $ 134.0  
Quad/Graphics, Inc.          
Business Acquisition [Line Items]          
Purchase price of business acquisition $ 42.0        
Identifiable tangible assets 38.1        
Quad/Graphics, Inc. | Customer Relationships          
Business Acquisition [Line Items]          
Identifiable intangible assets $ 4.0        
Artistic Carton Company          
Business Acquisition [Line Items]          
Total payments to acquire business   $ 53.0