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Inventories (Tables)
9 Months Ended
Sep. 30, 2021
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current
Inventories consist of the following:
September 30,December 31,
(In millions)20212020
Raw materials$646.3 $459.4 
Work-in-process843.7 904.6 
Finished goods60.1 121.7 
Deferred costs503.7 430.9 
$2,053.8 $1,916.6