Condensed Consolidated Statement of Comprehensive Income (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012
Statement of Comprehensive Income [Abstract]
Net income	$ 141,461	$ 123,437	$ 298,484	$ 253,268
Other comprehensive income (loss), net of tax:
Change in net unrealized gain (loss) on available-for-sale securities	2,995	5,650	(13,930)	7,152
Reclassification adjustment for (gain) loss on available-for-sale securities	155	(585)	(167)	(915)
Change in net unrealized gain (loss) on hedging transactions	1,353	9,801	(155)	8,496
Reclassification adjustment for (gain) loss on hedging transactions	1,389	(1,833)	2,095	(2,992)
Cumulative translation adjustment	(371)	622	(1,064)	(433)
Other comprehensive income (loss)	5,521	13,655	(13,221)	11,308
Total comprehensive income	$ 146,982	$ 137,092	$ 285,263	$ 264,576