Derivative Instruments (Fair Values of Instruments) (Details) - USD ($) $ in Millions	Apr. 02, 2017	Jan. 01, 2017
Fair values of derivative financial instruments
Total asset (liability) derivatives	$ (0.4)	$ 4.3
Designated as Hedging Instrument
Fair values of derivative financial instruments
Total asset (liability) derivatives	(0.5)	(1.1)
Not Designated as Hedging Instrument
Fair values of derivative financial instruments
Total asset (liability) derivatives	0.1	5.4
Foreign Exchange Contract | Designated as Hedging Instrument | Other assets
Fair values of derivative financial instruments
Total asset (liability) derivatives	0.1	0.0
Foreign Exchange Contract | Designated as Hedging Instrument | Accrued liabilities
Fair values of derivative financial instruments
Total asset (liability) derivatives	(1.0)	(1.0)
Foreign Exchange Contract | Designated as Hedging Instrument | Other long-term liabilities
Fair values of derivative financial instruments
Total asset (liability) derivatives	0.0	(0.1)
Foreign Exchange Contract | Not Designated as Hedging Instrument | Accrued liabilities
Fair values of derivative financial instruments
Total asset (liability) derivatives	(0.8)	(1.0)
Foreign Exchange Contract | Not Designated as Hedging Instrument | Other current assets
Fair values of derivative financial instruments
Total asset (liability) derivatives	0.9	6.4
Currency Swap | Designated as Hedging Instrument | Other assets
Fair values of derivative financial instruments
Total asset (liability) derivatives	$ 0.4	$ 0.0