Derivative Instruments (Details 2) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 30, 2012
Fair values of derivative financial instruments
Total asset/(liability) derivatives		$ 0.7
Designated as Hedging Instrument [Member]
Fair values of derivative financial instruments
Total asset/(liability) derivatives	(0.3)	0.8
Not Designated as Hedging Instrument [Member]
Fair values of derivative financial instruments
Total asset/(liability) derivatives	0.3	(0.1)
Foreign Exchange Contract [Member] | Designated as Hedging Instrument [Member] | Other Assets [Member]
Fair values of derivative financial instruments
Total asset/(liability) derivatives	(0.2)	(0.8)
Foreign Exchange Contract [Member] | Designated as Hedging Instrument [Member] | Accrued Liabilities [Member]
Fair values of derivative financial instruments
Total asset/(liability) derivatives	(0.5)
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member] | Accrued Liabilities [Member]
Fair values of derivative financial instruments
Total asset/(liability) derivatives	(0.1)	(0.2)
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member] | Other Current Assets [Member]
Fair values of derivative financial instruments
Total asset/(liability) derivatives	$ (0.4)	$ (0.1)