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Inventories
3 Months Ended
Mar. 28, 2020
Inventory Disclosure [Abstract]  
Inventories Inventories
(dollars in millions)
As of
March 28,2020
As of
December 28, 2019
Raw materials and supplies$120.6  $118.9  
Work in progress36.9  33.6  
Finished goods326.9  322.6  
Total inventories$484.4  $475.1