Condensed Consolidated Statements Of Income (USD $) In Thousands, except Per Share data	3 Months Ended		9 Months Ended
	Oct. 08, 2011	Oct. 09, 2010	Oct. 08, 2011	Oct. 09, 2010
Condensed Consolidated Statements Of Income [Abstract]
Sales	$ 675,369	$ 597,894	$ 2,119,790	$ 2,000,636
Materials, supplies, labor and other production costs (exclusive of depreciation and amortization shown separately below)	365,706	316,141	1,119,851	1,049,492
Selling, distribution and administrative expenses	239,084	215,222	775,841	725,679
Depreciation and amortization	22,816	19,778	71,706	65,436
Income from operations	47,763	46,753	152,392	160,029
Interest expense	(2,838)	(1,791)	(7,359)	(6,559)
Interest income	3,103	2,918	9,982	9,773
Income before income taxes	48,028	47,880	155,015	163,243
Income tax expense	17,009	16,714	54,625	57,634
Net income	$ 31,019	$ 31,166	$ 100,390	$ 105,609
Basic:
Net income per share	$ 0.23	$ 0.23	$ 0.74	$ 0.77
Weighted average shares outstanding	135,617	137,443	135,384	137,364
Diluted:
Net income per share	$ 0.23	$ 0.23	$ 0.73	$ 0.76
Weighted average shares outstanding	137,207	138,414	136,851	138,362
Cash dividends paid per common share	$ 0.150	$ 0.133	$ 0.433	$ 0.383