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Inventories

9 Months Ended

Sep. 30, 2023

Inventory Disclosure [Abstract]

Inventories

7. 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 method.

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

		September 30,				December 31,
		2023				2022
Raw materials		$	324.7			$	341.2
Work in process			15.1				16.0
Finished goods			189.2				198.4
Supplies and materials			457.1				421.7
Inventories		$	986.1			$	977.3

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- References

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- Definition

The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 330
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org//330/tableOfContent

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