Other Income (Expense) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 30, 2012 BsF	Apr. 01, 2011
Other income (expense)	$ 6.8	$ 7.0
Foreign currency transaction loss	2.1	1.5
Official exchange rate	4.30
Not Designated as Hedging Instrument [Member]
Unrealized loss on derivatives	$ 5.5	$ 6.0