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Inventories (Tables)
6 Months Ended
Jun. 30, 2022
Inventory Disclosure [Abstract]  
Components of Inventories

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