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Inventory
3 Months Ended
Mar. 31, 2024
Inventory Disclosure [Abstract]  
Inventory
5. Inventory

Inventory consisted of the following (in millions):
March 31,
2024
December 31, 2023
Raw materials and consumables$20.3 $21.0 
Work in process0.7 0.6 
Finished goods0.8 0.8 
Total inventory$21.8 $22.4