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Inventoried Costs
6 Months Ended
Jun. 27, 2021
Inventory Disclosure [Abstract]  
Inventoried Costs Inventoried Costs
 
Inventoried costs, consisted of the following components (in millions):
 
 June 27, 2021December 27, 2020
Raw materials$56.1 $47.3 
Work in process30.5 30.1 
Finished goods4.1 3.8 
Total inventoried costs$90.7 $81.2