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Revenue (Tables)
 12 Months Ended
Dec. 31, 2020
Revenue From Contract With Customer [Abstract]  
Summary of Revenues Disaggregated by Product Line

The following table presents our revenues disaggregated by product line (dollars in millions):

 

 

 

Year Ended December 31,

 

 

 

2020

 

 

2019

 

 

2018

 

Packaging

 

$

5,919.5

 

 

$

5,932.2

 

 

$

5,938.5

 

Paper

 

 

674.8

 

 

 

964.3

 

 

 

1,002.0

 

Corporate and Other

 

 

63.9

 

 

 

67.8

 

 

 

74.1

 

Total revenue

 

$

6,658.2

 

 

$

6,964.3

 

 

$

7,014.6