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Inventory (Tables)
9 Months Ended
Sep. 30, 2022
Inventory Disclosure [Abstract]  
Components of inventory
The components of inventory are summarized as follows:
(In millions)As of September 30, 2022As of December 31, 2021
Raw materials$394.2 $349.6 
Work in process(1)
771.0 814.0 
Finished goods209.8 187.9 
Total inventory$1,375.0 $1,351.5 
(1) Work in process inventory as of September 30, 2022, includes approximately $118.0 million related to lecanemab.