CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Income Statement [Abstract]
Net sales	$ 2,353,782	$ 2,213,249	$ 4,176,002	$ 3,896,150
Cost of merchandise sold	1,533,037	1,443,835	2,740,273	2,563,087
Gross profit	820,745	769,414	1,435,729	1,333,063
Selling, general and administrative expenses	484,190	452,346	949,999	878,459
Depreciation and amortization	48,998	43,610	94,765	86,397
Operating income	287,557	273,458	390,965	368,207
Interest expense, net	5,176	4,978	10,106	9,446
Income before income taxes	282,381	268,480	380,859	358,761
Income tax expense	63,171	61,191	84,817	80,039
Net income	$ 219,210	$ 207,289	$ 296,042	$ 278,722
Net income per share – basic	$ 1.82	$ 1.70	$ 2.45	$ 2.26
Net income per share – diluted	$ 1.80	$ 1.69	$ 2.43	$ 2.25
Weighted average shares outstanding:
Basic	120,371	122,100	120,791	123,288
Diluted	121,508	122,775	121,830	123,975
Dividends declared per common share outstanding	$ 0.35	$ 0.31	$ 0.66	$ 0.58