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Property, Plant and Equipment (Schedule of Property, Plant and Equipment) (Details) - USD ($)
$ in Millions
Sep. 24, 2021
Dec. 25, 2020
Property, Plant and Equipment    
Property, plant and equipment, gross $ 1,892.4 $ 1,910.9
Less: accumulated depreciation (1,124.7) (1,077.8)
Property, plant and equipment, net $ 767.7 $ 833.1