Condensed Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Sep. 30, 2011	Oct. 01, 2010	Sep. 30, 2011	Oct. 01, 2010
Condensed Consolidated Statements Of Operations [Abstract]
Net sales	$ 8,044,342	$ 7,422,338	$ 15,592,093	$ 13,988,218
Cost of sales	7,668,956	7,024,691	14,816,485	13,219,753
Gross profit	375,386	397,647	775,608	768,465
Selling, general and administrative expenses	214,069	198,954	429,984	394,672
Intangible amortization	14,540	21,439	27,842	39,429
Interest and other expense, net	1,467	22,838	23,643	50,367
Income before income taxes	145,310	154,416	294,139	283,997
Provision for income taxes	15,430	10,000	32,284	21,403
Net income	$ 129,880	$ 144,416	$ 261,855	$ 262,594
Earnings per share:
Basic	$ 0.18	$ 0.19	$ 0.36	$ 0.33
Diluted	$ 0.18	$ 0.18	$ 0.35	$ 0.33
Weighted-average shares used in computing per share amounts:
Basic	722,208	776,362	734,485	793,499
Diluted	731,049	784,271	745,436	804,144