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Inventoried Costs
9 Months Ended
Sep. 26, 2021
Inventory Disclosure [Abstract]  
Inventoried Costs Inventoried Costs
 
Inventoried costs, consisted of the following components (in millions):
 
 September 26, 2021December 27, 2020
Raw materials$55.2 $47.3 
Work in process31.1 30.1 
Finished goods4.6 3.8 
Total inventoried costs$90.9 $81.2