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Property, Plant and Equipment (Tables)
12 Months Ended
Dec. 31, 2019
Property, Plant and Equipment [Abstract]  
Summary of property, plant and equipment
Property, plant and equipment, at December 31, consist of the following:
 
2019
 
2018
Land and improvements
$
41.8

 
$
41.8

Buildings and improvements
337.2

 
337.3

Machinery and equipment
1,467.0

 
1,449.5

Construction in progress
44.9

 
46.3

 
1,890.9

 
1,874.9

Less accumulated depreciation
(941.7
)
 
(907.6
)
Property, plant and equipment - net
$
949.2

 
$
967.3