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Inventory
12 Months Ended
Dec. 31, 2024
Inventory Disclosure [Abstract]  
Inventory
5. Inventory

Inventory consisted of the following (in millions):
December 31,
20242023
Raw materials and consumables$19.6 $21.0 
Work in process0.4 0.6 
Finished goods0.8 0.8 
Total inventory$20.8 $22.4