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Inventories (Tables)
9 Months Ended
Sep. 30, 2025
Inventory Disclosure [Abstract]  
Components of Inventories

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

 

 

 

September 30,

 

 

December 31,

 

 

 

2025

 

 

2024

 

Raw materials

 

$

423.2

 

 

$

356.6

 

Work in process

 

 

19.4

 

 

 

15.5

 

Finished goods

 

 

255.3

 

 

 

234.0

 

Supplies and materials

 

 

579.2

 

 

 

518.8

 

Inventories

 

$

1,277.1

 

 

$

1,124.9