Valuation and Qualifying Accounts (Details 1) (USD $) In Thousands, except Per Share data, 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
Supplementary Financial Data
Net revenues	$ 558,973	$ 511,091	$ 555,209	$ 615,463	$ 587,852	$ 567,190	$ 619,666	$ 594,737	$ 2,240,736	$ 2,369,445	$ 1,833,554
Gross margin	371,396	336,286	354,645	392,331	384,149	372,771	406,406	386,561	1,454,658	1,549,887	1,161,751
Income before income taxes	140,388	129,938	146,241	180,484	168,812	180,209	219,170	202,889	597,051	771,080	421,765
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 income per common share:
Basic	$ 0.46	$ 0.49	$ 0.48	$ 0.58	$ 0.61	$ 0.59	$ 0.66	$ 0.58	$ 2.01	$ 2.43	$ 1.30
Diluted	$ 0.44	$ 0.47	$ 0.47	$ 0.56	$ 0.59	$ 0.58	$ 0.65	$ 0.58	$ 1.95	$ 2.39	$ 1.29
Shares used in per share calculations:
Basic	263,261	261,257	264,006	265,313	263,603	259,418	260,151	272,097	263,783	264,094	276,012
Diluted	276,166	267,884	267,927	276,077	272,161	263,612	263,286	275,541	272,157	268,061	276,953
Cash dividends declared per common share	$ 0.19	$ 0.19	$ 0.19	$ 0.19	$ 0.16	$ 0.16	$ 0.16	$ 0.16	$ 0.76	$ 0.64	$ 0.60