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Inventoried Costs (Details) - USD ($)
$ in Millions
Jun. 28, 2020
Dec. 29, 2019
Inventory Disclosure [Abstract]    
Raw materials $ 42.8 $ 39.1
Work in process 22.1 20.3
Finished goods 2.0 1.7
Inventoried costs $ 66.9 $ 61.1