Share-Based Compensation-Expense Recognition (Details 4) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 29, 2015	Mar. 30, 2014
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Allocated Share-based Compensation Expense	$ 41,410	$ 30,030
Total tax benefit recognized	(11,069)	(8,776)
Decrease in net income	30,341	21,254
Stock options and SARs [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Allocated Share-based Compensation Expense	8,028	7,924
Restricted Stock Units (RSUs) [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Allocated Share-based Compensation Expense	30,225	19,465
Employee Stock Purchase Plan Shares [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Allocated Share-based Compensation Expense	3,157	2,641
Cost of revenue [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Allocated Share-based Compensation Expense	4,062	2,610
Research and Development [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Allocated Share-based Compensation Expense	21,043	15,675
Sales and marketing [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Allocated Share-based Compensation Expense	9,535	6,257
General and administrative [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Allocated Share-based Compensation Expense	$ 6,770	$ 5,488