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Inventories
6 Months Ended
Jun. 30, 2022
Inventory Disclosure [Abstract]  
Inventories Inventories
Inventories consisted of the following:
As of June 30, 2022As of December 31, 2021
(in millions)
Raw materials$30.4 $42.4 
Work-in-process236.6 224.0 
Finished goods
100.7 86.7 
Total
$367.7 $353.1