Inventories

6 Months Ended

Jun. 30, 2022

Inventory Disclosure [Abstract]

Inventories

8. Inventories

We value our raw materials, work in process, and finished goods inventories using lower of cost, as determined by the average cost method, or net realizable value. Supplies and materials are valued at the first-in, first-out (FIFO) or average cost methods.

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

	June 30,		December 31,
	2022		2021
Raw materials	$	340.1	$	324.2
Work in process		19.0		16.2
Finished goods		211.1		201.0
Supplies and materials		384.0		361.1
Inventories	$	954.2	$	902.5