Property, Plant, and Equipment (Tables)

6 Months Ended

Jun. 30, 2018

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,
	2018			2017
Land and land improvements	$	159.7		$	156.0
Buildings		735.8			729.8
Machinery and equipment		5,364.0			5,162.5
Construction in progress		209.8			194.5
Other		71.6			68.4
Property, plant and equipment, at cost		6,540.9			6,311.2
Less accumulated depreciation		(3,514.4	)		(3,386.3	)
Property, plant, and equipment, net	$	3,026.5		$	2,924.9