Property, Plant, and Equipment (Tables)

6 Months Ended

Jun. 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):

	June 30,			December 31,
	2017			2016
Land and land improvements	$	156.3		$	149.7
Buildings		725.7			717.1
Machinery and equipment		5,017.9			4,951.4
Construction in progress		152.6			125.4
Other		67.5			66.7
Property, plant and equipment, at cost		6,120.0			6,010.3
Less accumulated depreciation		(3,247.5	)		(3,114.6	)
Property, plant, and equipment, net	$	2,872.5		$	2,895.7