CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Income Statement [Abstract]
Net sales	$ 5,164,784	$ 4,664,120	$ 4,232,743
Cost of merchandise sold	3,411,175	3,098,066	2,825,871
Gross profit	1,753,609	1,566,054	1,406,872
Selling, general and administrative expenses	1,138,934	1,040,287	973,822
Depreciation and amortization	100,025	88,975	80,347
Operating income	514,650	436,792	352,703
Interest expense, net	557	1,055	2,087
Income before income taxes	514,093	435,737	350,616
Income tax expense	185,859	159,280	127,876
Net income	$ 328,234	$ 276,457	$ 222,740
Net income per share - basic (in dollars per share)	$ 2.35	$ 1.94	$ 1.55
Net income per share - assuming dilution (in dollars per share)	$ 2.32	$ 1.90	$ 1.51
Weighted average shares outstanding:
Shares, basic (in shares)	139,415	142,184	143,554
Shares, diluted (in shares)	141,723	145,514	147,842
Dividends declared per common share outstanding (in dollars per share)	$ 0.49	$ 0.36	$ 0.22