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Inventories
9 Months Ended
Sep. 30, 2023
Inventory Disclosure [Abstract]  
Inventories Inventories
Inventories consisted of the following:
As of September 30, 2023As of December 31, 2022
(in millions)
Raw materials$77.5 $38.1 
Work-in-process498.3 260.7 
Finished goods
112.9 161.8 
Total
$688.7 $460.6