Condensed Consolidated Statement of Comprehensive Income (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Dec. 29, 2012	Dec. 31, 2011
Statement of Income and Comprehensive Income [Abstract]
Net income	$ 103,648	$ 127,014	$ 356,916	$ 407,674
Other comprehensive income (loss), net of tax:
Change in net unrealized gain on available-for-sale securities	(2,253)	(436)	4,899	3,822
Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, Net of Tax	(421)	(425)	(1,336)	(987)
Change in net unrealized loss on hedging transactions	(684)	(3,413)	4,820	(12,132)
Cumulative translation adjustment	(51)	(2,053)	(484)	(1,177)
Other comprehensive income (loss)	(3,409)	(6,327)	7,899	(10,474)
Total comprehensive income	$ 100,239	$ 120,687	$ 364,815	$ 397,200