Derivative Instruments and Hedging Activities - Non-designated Derivatives (Details) - Non-designated derivatives: - USD ($) $ in Millions	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain/(Loss) Recognized against Earnings	$ (8.4)	$ 2.6
Foreign currency forward contracts | Other (income) expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain/(Loss) Recognized against Earnings	(8.8)	3.5
Foreign currency forward contracts | Interest expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain/(Loss) Recognized against Earnings	$ 0.4	$ (0.9)