Inventories (Tables)

3 Months Ended

Mar. 31, 2021

Inventory Disclosure [Abstract]

Components of Inventories

The components of inventories were as follows (dollars in millions):

	March 31,		December 31,
	2021		2020
Raw materials	$	281.6	$	263.5
Work in process		11.6		11.6
Finished goods		174.1		183.6
Supplies and materials		332.3		329.2
Inventories	$	799.6	$	787.9