Property, Plant, and Equipment (Tables)

6 Months Ended

Jun. 30, 2020

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,
	2020			2019
Land and land improvements	$	177.5		$	177.5
Buildings		845.1			837.4
Machinery and equipment		5,793.7			5,727.4
Construction in progress		214.5			174.0
Other		86.2			81.5
Property, plant and equipment, at cost		7,117.0			6,997.8
Less accumulated depreciation		(4,002.3	)		(3,846.1	)
Property, plant, and equipment, net	$	3,114.7		$	3,151.7