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Inventories (Tables)
3 Months Ended
Mar. 26, 2021
Inventory, Net [Abstract]  
Schedule of Inventories
Inventories were comprised of the following at the end of each period: 
March 26,
2021
December 25,
2020
Raw materials and supplies$58.0 $58.1 
Work in process205.9200.7
Finished goods99.586.1
$363.4 $344.9