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Inventories
12 Months Ended
Jan. 02, 2022
Inventory Disclosure [Abstract]  
Inventories Inventories
Inventories (in millions):Balance at year-end
20212020
Raw materials and supplies$479.8 $227.7 
Work in process123.0 57.6 
Finished goods150.1 62.0 
Total inventories, net$752.9 $347.3