CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
Mar. 28, 2015	Mar. 29, 2014
Income Statement [Abstract]
Net sales	$ 1,331,352us-gaap_SalesRevenueGoodsNet	$ 1,183,680us-gaap_SalesRevenueGoodsNet
Cost of merchandise sold	886,747us-gaap_CostOfGoodsSold	787,461us-gaap_CostOfGoodsSold
Gross profit	444,605us-gaap_GrossProfit	396,219us-gaap_GrossProfit
Selling, general and administrative expenses	321,476	290,270
Depreciation and amortization	30,282us-gaap_DepreciationAndAmortization	27,220us-gaap_DepreciationAndAmortization
Operating income	92,847us-gaap_OperatingIncomeLoss	78,729us-gaap_OperatingIncomeLoss
Interest expense, net	866us-gaap_InterestExpense	454us-gaap_InterestExpense
Income before income taxes	91,981	78,275
Income tax expense	33,941us-gaap_IncomeTaxExpenseBenefit	29,466us-gaap_IncomeTaxExpenseBenefit
Net income	$ 58,040us-gaap_NetIncomeLoss	$ 48,809us-gaap_NetIncomeLoss
Net income per share - basic (in dollars per share)	$ 0.43us-gaap_EarningsPerShareBasic	$ 0.35us-gaap_EarningsPerShareBasic
Net income per share - diluted (in dollars per share)	$ 0.42us-gaap_EarningsPerShareDiluted	$ 0.35us-gaap_EarningsPerShareDiluted
Weighted average shares outstanding
Basic (in shares)	136,347	139,118
Diluted (in shares)	137,735	141,032
Dividends declared per common share outstanding (in dollars per share)	$ 0.16	$ 0.13

Aggregate dividends declared during the period for each share of common stock outstanding.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770