Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 28, 2014	Jun. 29, 2013
Statement of Comprehensive Income [Abstract]
Net income	$ 173,611	$ 157,023
Other comprehensive income (loss), net of tax:
Change in net unrealized gains (losses) on available-for-sale securities	7,959	(16,924)
Reclassification adjustment for gains on available-for-sale securities	(391)	(322)
Net change in unrealized gains (losses) on hedging transactions	542	(1,508)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	(807)	706
Cumulative translation adjustment, net	171	(694)
Other comprehensive income (loss)	7,474	(18,742)
Total comprehensive income	$ 181,085	$ 138,281