Consolidated Statements of Stockholders' Equity (USD $) In Thousands, unless otherwise specified	Total	Common Stock Outstanding	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Beginning Balance at Mar. 28, 2009	$ 1,948,760	$ 2,755	$ 1,085,745	$ 879,118	$ (18,858)
Beginning Balance, Shares at Mar. 28, 2009		275,507
Components of comprehensive income:
Net income	357,484			357,484
Change in net unrealized loss on available-for-sale securities, net of tax benefit of $9,115, $2,176, $3,569 for 2010, 2011 and 2012 respectively	14,756				14,756
Change in net unrealized loss on hedging transactions, net of taxes	(541)				(541)
Cumulative translation adjustment	3,422				3,422
Total comprehensive income	375,121
Issuance of common shares under employee stock plans	60,088	42	60,046
Issuance of common shares under employee stock plans, Shares		4,183
Repurchase and retirement of common stock	(149,997)	(62)	(95,526)	(54,409)
Repurchase and retirement of common stock, Shares		(6,203)
Stock-based compensation expense	56,481		56,481
Stock-based compensation capitalized in inventory	17		17
Cash dividends declared ($0.60, $0.64, $0.76 per common share for 2010, 2011, 2012 respectively)	(165,648)			(165,648)
Tax benefit from exercise of stock options	(4,352)		(4,352)
Ending Balance at Apr. 03, 2010	2,120,470	2,735	1,102,411	1,016,545	(1,221)
Ending Balance, Shares at Apr. 03, 2010		273,487
Components of comprehensive income:
Net income	641,875			641,875
Change in net unrealized loss on available-for-sale securities, net of tax benefit of $9,115, $2,176, $3,569 for 2010, 2011 and 2012 respectively	3,537				3,537
Change in net unrealized loss on hedging transactions, net of taxes	6,776				6,776
Cumulative translation adjustment	1,425				1,425
Total comprehensive income	653,613
Issuance of common shares under employee stock plans	170,353	89	170,264
Issuance of common shares under employee stock plans, Shares		8,870
Repurchase and retirement of common stock	(468,943)	(178)	(217,461)	(251,304)
Repurchase and retirement of common stock, Shares	(17,755)	(17,755)
Stock-based compensation expense	60,258		60,258
Stock-based compensation capitalized in inventory	394		394
Equity component of 2.625% Debentures, net	108,094		108,094
Purchase of call options	112,319		(112,319)
Issuance of warrants	46,908		46,908
Cash dividends declared ($0.60, $0.64, $0.76 per common share for 2010, 2011, 2012 respectively)	(169,072)			(169,072)
Tax benefit from exercise of stock options	4,861		4,861
Ending Balance at Apr. 02, 2011	2,414,617	2,646	1,163,410	1,238,044	10,517
Ending Balance, Shares at Apr. 02, 2011	264,602	264,602
Components of comprehensive income:
Net income	530,079			530,079
Change in net unrealized loss on available-for-sale securities, net of tax benefit of $9,115, $2,176, $3,569 for 2010, 2011 and 2012 respectively	6,097				6,097
Change in net unrealized loss on hedging transactions, net of taxes	(8,324)				(8,324)
Cumulative translation adjustment	(1,026)				(1,026)
Total comprehensive income	526,826
Issuance of common shares under employee stock plans	108,663	61	108,602
Issuance of common shares under employee stock plans, Shares		6,040
Repurchase and retirement of common stock	(219,638)	(71)	(154,132)	(65,435)
Repurchase and retirement of common stock, Shares	(7,030)	(7,030)
Stock-based compensation expense	67,418		67,418
Stock-based compensation capitalized in inventory	242		242
Cash dividends declared ($0.60, $0.64, $0.76 per common share for 2010, 2011, 2012 respectively)	(200,361)			(200,361)
Tax benefit from exercise of stock options	9,918		9,918
Ending Balance at Mar. 31, 2012	$ 2,707,685	$ 2,636	$ 1,195,458	$ 1,502,327	$ 7,264
Ending Balance, Shares at Mar. 31, 2012	263,612	263,612