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Inventories
3 Months Ended
Mar. 31, 2023
Inventory Disclosure [Abstract]  
Inventories Inventories
Inventories consist of the following:
March 31,December 31,
(In millions)20232022
Raw materials$844.6 $818.4 
Work-in-process855.7 963.1 
Finished goods169.3 98.6 
Deferred costs555.1 521.8 
$2,424.7 $2,401.9 
Inventory balances in the table above are net of reserves of $752.3 million and $720.7 million as of March 31, 2023 and December 31, 2022, respectively. Deferred costs represent the costs of product manufactured and shipped to the Company's collaborators for which recognition of revenue has been deferred.