Derivative Instruments (Fair Values of Instruments) (Details) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 30, 2018
Fair values of derivative financial instruments
Total liability derivatives, net	$ (6.2)	$ (11.1)
Designated as Hedging Instrument
Fair values of derivative financial instruments
Total liability derivatives, net	(5.9)	(10.5)
Not Designated as Hedging Instrument
Fair values of derivative financial instruments
Total liability derivatives, net	(0.3)	(0.6)
Foreign Exchange Contract | Designated as Hedging Instrument | Other assets
Fair values of derivative financial instruments
Total liability derivatives, net	0.8	0.0
Foreign Exchange Contract | Designated as Hedging Instrument | Accrued liabilities
Fair values of derivative financial instruments
Total liability derivatives, net	(0.9)	(4.2)
Foreign Exchange Contract | Not Designated as Hedging Instrument | Accrued liabilities
Fair values of derivative financial instruments
Total liability derivatives, net	(0.4)	(0.6)
Foreign Exchange Contract | Not Designated as Hedging Instrument | Other current assets
Fair values of derivative financial instruments
Total liability derivatives, net	0.1	0.0
Currency Swap | Designated as Hedging Instrument | Accrued liabilities
Fair values of derivative financial instruments
Total liability derivatives, net	$ (5.8)	$ (6.3)