Stockbased Compensation Expense Allocation (Details) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jul. 02, 2011	Jul. 03, 2010	Jul. 02, 2011	Jul. 03, 2010
Employee Service Share-based Compensation, Allocation Of Recognized Period Costs [Line Items]
Total Stock-based Compensation Expense	$ 20.3	$ 22.0	$ 41.9	$ 40.8
Cost of Revenues [Member]
Employee Service Share-based Compensation, Allocation Of Recognized Period Costs [Line Items]
Total Stock-based Compensation Expense	1.4	1.6	2.9	2.9
Selling, General and Administrative Expenses [Member]
Employee Service Share-based Compensation, Allocation Of Recognized Period Costs [Line Items]
Total Stock-based Compensation Expense	18.4	20.0	38.0	37.1
Research and Development Expenses [Member]
Employee Service Share-based Compensation, Allocation Of Recognized Period Costs [Line Items]
Total Stock-based Compensation Expense	$ 0.5	$ 0.4	$ 1.0	$ 0.8