Share-Based Compensation-Expense Recognition (Details 4) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jul. 01, 2012	Jun. 30, 2013	Jul. 01, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Share-based compensation expense	$ 24,661	$ 20,253	$ 46,395	$ 39,333
Total tax benefit recognized	(6,222)	(4,676)	(13,138)	(9,845)
Decrease in net income	18,439	15,577	33,257	29,488
Stock options and SARs [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Share-based compensation expense	8,054	9,426	16,323	18,642
Restricted Stock Units (RSUs) [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Share-based compensation expense	14,788	8,608	26,758	16,502
Employee Stock Purchase Plan Shares [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Share-based compensation expense	1,819	2,219	3,314	4,189
Cost of product revenues [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Share-based compensation expense	2,447	1,923	4,164	3,460
Research and Development [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Share-based compensation expense	12,704	10,623	24,344	20,650
Sales and marketing [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Share-based compensation expense	4,701	3,634	8,572	7,263
General and administrative [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Share-based compensation expense	$ 4,809	$ 4,073	$ 9,315	$ 7,960