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Goodwill and Intangible Assets - Goodwill (Details) - USD ($)
$ in Millions
Sep. 25, 2022
Dec. 26, 2021
Goodwill [Line Items]    
Gross value $ 805.1 $ 747.2
Less accumulated impairment 253.3 253.3
Net 551.8 493.9
KGS    
Goodwill [Line Items]    
Gross value 677.2 619.3
Less accumulated impairment 239.5 239.5
Net 437.7 379.8
US    
Goodwill [Line Items]    
Gross value 127.9 127.9
Less accumulated impairment 13.8 13.8
Net $ 114.1 $ 114.1