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Property, Plant, and Equipment (Tables)
9 Months Ended
Sep. 30, 2017
Property Plant And Equipment [Abstract]  
Components of Property, Plant, and Equipment

The components of property, plant, and equipment were as follows (dollars in millions):

 

 

 

September 30,

 

 

December 31,

 

 

 

2017

 

 

2016

 

Land and land improvements

 

$

156.1

 

 

$

149.7

 

Buildings

 

 

731.2

 

 

 

717.1

 

Machinery and equipment

 

 

5,066.2

 

 

 

4,951.4

 

Construction in progress

 

 

177.6

 

 

 

125.4

 

Other

 

 

66.5

 

 

 

66.7

 

Property, plant and equipment, at cost

 

 

6,197.6

 

 

 

6,010.3

 

Less accumulated depreciation

 

 

(3,316.0

)

 

 

(3,114.6

)

Property, plant, and equipment, net

 

$

2,881.6

 

 

$

2,895.7