Condensed Consolidated Statement of Comprehensive Income (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 29, 2012	Oct. 01, 2011	Sep. 29, 2012	Oct. 01, 2011
Statement of Income and Comprehensive Income [Abstract]
Net income	$ 123,437	$ 126,286	$ 253,268	$ 280,660
Other comprehensive income (loss), net of tax:
Change in net unrealized gain on available-for-sale securities	5,650	1,328	7,152	4,258
Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, Net of Tax	(585)	(375)	(915)	(562)
Change in net unrealized loss on hedging transactions	7,968	(8,120)	5,504	(8,719)
Cumulative translation adjustment	622	218	(433)	876
Other comprehensive income (loss)	13,655	(6,949)	11,308	(4,147)
Total comprehensive income	$ 137,092	$ 119,337	$ 264,576	$ 276,513