Condensed Consolidated Statement of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 29, 2013	Jun. 30, 2012
Statement of Comprehensive Income [Abstract]
Net income	$ 157,023	$ 129,831
Other comprehensive income (loss), net of tax:
Change in net unrealized gain (loss) on available-for-sale securities	(16,924)	1,502
Reclassification adjustment for gain on available-for-sale securities	(322)	(330)
Change in net unrealized loss on hedging transactions	(1,508)	(3,623)
Reclassification adjustment for loss on hedging transactions	706	1,159
Cumulative translation adjustment	(694)	(1,055)
Other comprehensive loss	(18,742)	(2,347)
Total comprehensive income	$ 138,281	$ 127,484