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Inventoried Costs
3 Months Ended
Mar. 28, 2021
Inventory Disclosure [Abstract]  
Inventoried Costs Inventoried Costs
 
Inventoried costs, consisted of the following components (in millions):
 
 March 28, 2021December 27, 2020
Raw materials$54.2 $47.3 
Work in process27.0 30.1 
Finished goods4.5 3.8 
Total inventoried costs$85.7 $81.2