Stock-Based Compensation Plans (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 30, 2013	Mar. 31, 2012	Apr. 02, 2011
Stock Based compensation expense
Income tax effect	$ (32,600)	$ (31,200)	$ (25,600)
Employee Stock Purchase Plan [Member]
Stock Based compensation expense
Stock-based compensation effect on income before taxes	77,862	67,418	60,258
Income tax effect	(22,137)	(19,214)	(18,561)
Net stock-based compensation effect on net income	55,725	48,204	41,697
Employee Stock Purchase Plan [Member] | Cost of Revenues [Member]
Stock Based compensation expense
Stock-based compensation effect on income before taxes	6,356	5,630	4,825
Employee Stock Purchase Plan [Member] | Research and Development [Member]
Stock Based compensation expense
Stock-based compensation effect on income before taxes	37,937	32,310	28,780
Employee Stock Purchase Plan [Member] | Selling, General and Administrative Expenses [Member]
Stock Based compensation expense
Stock-based compensation effect on income before taxes	$ 33,569	$ 29,478	$ 26,653