Share-Based Compensation-Expense Recognition (Details 4) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2014	Mar. 31, 2013
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Share-based compensation expense	$ 30,030	$ 21,734
Total tax benefit recognized	(8,776)	(6,916)
Decrease in net income	21,254	14,818
Stock options and SARs [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Share-based compensation expense	7,924	8,269
Restricted Stock Units (RSUs) [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Share-based compensation expense	19,465	11,970
Employee Stock Purchase Plan Shares [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Share-based compensation expense	2,641	1,495
Cost of revenue [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Share-based compensation expense	2,610	1,717
Research and Development [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Share-based compensation expense	15,675	11,640
Sales and marketing [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Share-based compensation expense	6,257	3,871
General and administrative [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Share-based compensation expense	$ 5,488	$ 4,506