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Financial Instruments and Risk Management Derivative Recorded Values (Details) - USD ($)
$ in Millions
Mar. 31, 2018
Dec. 30, 2017
Apr. 01, 2017
Derivatives, Fair Value [Line Items]      
Interest rate swap, assets $ 2.3 $ 0.0 $ 0.3
Interest rate swap, liabilities 0.0 (0.3) (3.7)
Cross currency swap, liabilities (19.0) (13.8) (0.7)
Hedge [Member]      
Derivatives, Fair Value [Line Items]      
Foreign exchange contracts, asset 0.9 0.3 3.2
Foreign exchange contracts liabilities $ (3.1) $ (5.0) $ (0.5)