Comprehensive Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Mar. 31, 2012	Dec. 31, 2011	Oct. 01, 2011	Jul. 02, 2011	Apr. 02, 2011	Jan. 01, 2011	Oct. 02, 2010	Jul. 03, 2010	Mar. 31, 2012	Apr. 02, 2011	Apr. 03, 2010
Components of comprehensive income:
Net income	$ 122,405	$ 127,014	$ 126,286	$ 154,374	$ 160,052	$ 152,341	$ 170,895	$ 158,587	$ 530,079	$ 641,875	$ 357,484
Net change in unrealized gains on available-for-sale securities, net of tax									7,159	5,975	14,996
Reclassification adjustment for gains on available-for-sale securities, net of tax, included in net income									(1,062)	(2,438)	(240)
Net change in unrealized gain (losses) on hedging transactions, net of tax									(8,324)	6,776	(541)
Net change in cumulative translation adjustment									(1,026)	1,425	3,422
Total comprehensive income									$ 526,826	$ 653,613	$ 375,121