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Financial Instruments and Risk Management Derivative Recorded Values (Details) - USD ($)
$ in Millions
Sep. 29, 2018
Dec. 30, 2017
Sep. 30, 2017
Derivatives, Fair Value [Line Items]      
Interest rate swap, assets $ 3.6 $ 0.0 $ 0.0
Interest rate swap, liabilities 0.0 (0.3) (3.0)
Cross currency swap, liabilities (12.1) (13.8) (11.8)
Hedge [Member]      
Derivatives, Fair Value [Line Items]      
Foreign exchange contracts, asset 3.9 0.3 0.2
Foreign exchange contracts liabilities $ (0.2) $ (5.0) $ (5.6)