Inventories (Tables)

3 Months Ended

Mar. 31, 2021

Inventory Disclosure [Abstract]

Major components of inventory

The major components of inventory, on a net basis, were as follows: 

(dollars in millions)	March 31, 2021		December 31, 2020
Finished goods	$	144.2	$	119.7
Work in process	30.0		23.0
Raw materials and supplies	69.2		60.4
Total inventories	$	243.4	$	203.1