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Stock-Based Compensation Plans (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2012	Apr. 02, 2011	Apr. 03, 2010
Stock Based compensation expense
Income tax effect	$ (19,214)	$ (18,561)	$ (17,105)
Stock-based compensation effect on income before taxes	67,418	60,258	56,481
Net stock-based compensation effect on net income	48,204	41,697	39,376
Cost of revenues [Member]
Stock Based compensation expense
Stock-based compensation effect on income before taxes	5,630	4,825	5,180
Research and development [Member]
Stock Based compensation expense
Stock-based compensation effect on income before taxes	32,310	28,780	25,766
Selling, general and administrative [Member]
Stock Based compensation expense
Stock-based compensation effect on income before taxes	29,478	26,653	24,590
Restructuring charges [Member]
Stock Based compensation expense
Stock-based compensation effect on income before taxes			$ 945

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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