Employee Benefit Plan (Narrative) (Details) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jul. 02, 2011	Jul. 03, 2010	Jul. 02, 2011	Jul. 03, 2010
Employee Benefit Plan
Profit Sharing and Retirement Savings Plan expense	$ 44.0	$ 14.5	$ 71.1	$ 20.9