Inventories (Tables)

3 Months Ended

Mar. 31, 2018

Inventory Disclosure [Abstract]

Components of Inventories

Net inventories as of March 31, 2018 and December 31, 2017 are summarized in the table below:

	March 31, 2018		December 31, 2017
(Dollars in millions)
Raw materials	$	180.1	$	173.6
Work in process		10.9		11.2
Finished goods		100.1		98.4
	$	291.1	$	283.2
Less revaluation to LIFO		47.9		46.3
Net	$	243.2	$	236.9