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Financial Instruments and Risk Management (Financial Assets and Liabilities Measured at Fair Value) (Details) - USD ($)
$ in Millions
Dec. 29, 2018
Dec. 30, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Interest rate swap asset $ 1.6 $ 0.0
Interest rate swap liability 0.0 (0.3)
Derivative Instruments in Hedges, Net Investment in Foreign Operations, Liabilities, Fair Value (8.2) (13.8)
Designated as Hedging Instrument [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Foreign exchange contracts asset 8.7 0.3
Foreign exchange contracts liability $ 0.0 $ (5.0)