CONSOLIDATED STATEMENTS OF INCOME (Unaudited) (USD $) In Thousands, except Share data	3 Months Ended		9 Months Ended
	Sep. 24, 2011	Sep. 25, 2010	Sep. 24, 2011	Sep. 25, 2010
Income Statement [Abstract]
Net sales	$ 977,776	$ 829,114	$ 2,992,715	$ 2,605,687
Cost of merchandise sold	650,173	553,426	1,989,009	1,738,939
Gross margin	327,603	275,688	1,003,706	866,748
Selling, general and administrative expenses	239,883	210,779	705,863	627,913
Depreciation and amortization	19,591	17,502	56,685	51,313
Operating income	68,129	47,407	241,158	187,522
Interest expense, net	591	38	1,051	597
Income before income taxes	67,538	47,369	240,107	186,925
Income tax expense	24,805	17,506	87,879	69,162
Net income	$ 42,733	$ 29,863	$ 152,228	$ 117,763
Net income per share - basic (in dollars per share)	$ 0.60	$ 0.41	$ 2.11	$ 1.62
Net income per share - diluted (in dollars per share)	$ 0.58	$ 0.40	$ 2.05	$ 1.58
Weighted average shares outstanding:
Basic (in shares)	71,226	72,600	71,988	72,525
Diluted (in shares)	73,343	74,932	74,158	74,536
Dividends declared per common share outstanding (in dollars per share)	$ 0.12	$ 0.07	$ 0.31	$ 0.21