CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2017	Jun. 25, 2016	Jul. 01, 2017	Jun. 25, 2016
Income Statement [Abstract]
Net sales	$ 2,017,762	$ 1,852,534	$ 3,581,840	$ 3,320,331
Cost of merchandise sold	1,313,054	1,203,312	2,358,929	2,176,665
Gross profit	704,708	649,222	1,222,911	1,143,666
Selling, general and administrative expenses	405,736	365,916	787,850	718,588
Depreciation and amortization	41,047	34,057	80,774	67,634
Operating income	257,925	249,249	354,287	357,444
Interest expense, net	3,092	1,910	5,869	3,035
Income before income taxes	254,833	247,339	348,418	354,409
Income tax expense	94,184	90,914	127,458	130,316
Net income	$ 160,649	$ 156,425	$ 220,960	$ 224,093
Net income per share – basic	$ 1.25	$ 1.17	$ 1.71	$ 1.68
Net income per share – diluted	$ 1.25	$ 1.16	$ 1.70	$ 1.66
Weighted average shares outstanding:
Basic	128,186	133,564	129,231	133,597
Diluted	128,722	134,562	129,906	134,635
Dividends declared per common share outstanding	$ 0.27	$ 0.24	$ 0.51	$ 0.44