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Inventory (Tables)
6 Months Ended
Jun. 30, 2022
Inventory Disclosure [Abstract]  
Components of inventory
The components of inventory are summarized as follows:
(In millions)As of June 30, 2022As of December 31, 2021
Raw materials$378.0 $349.6 
Work in process(1)
706.3 814.0 
Finished goods209.9 187.9 
Total inventory$1,294.2 $1,351.5 
(1) Work in process inventory as of June 30, 2022, includes approximately $71.5 million related to lecanemab.