| **STOCK-BASED COMPENSATION**                                                  | 6 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      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| **Disclosure of Compensation Related Costs, Share-based Payments [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                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| STOCK-BASED COMPENSATION                                                      | STOCK-BASED COMPENSATION The Company grants stock-based awards under its 2006 Stock Incentive Plan (the “2006 Plan”). The 2006 Plan replaced certain other prior stock option plans. These other plans terminated upon the 2006 Plan’s initial stockholder approval in June 2006. Shares issued as a result of stock-based compensation transactions generally have been funded with the issuance of new shares of the Company’s common stock.The Company may grant the following types of incentive awards under the 2006 Plan: (i) non-qualified stock options (“NQs”); (ii) incentive stock options (“ISOs”); (iii) stock appreciation rights; (iv) restricted stock; (v) restricted stock units (“RSUs”); (vi) performance shares; (vii) performance share units (“PSUs”); and (viii) other stock-based awards. Each award granted under the 2006 Plan is subject to an award agreement that incorporates, as applicable, the exercise price, the term of the award, the periods of restriction, the number of shares to which the award pertains, performance periods and performance measures, and such other terms and conditions as the plan committee determines.Through July 30, 2017, the Company has granted under the 2006 Plan (i) service-based NQs, RSUs and restricted stock; (ii) contingently issuable PSUs; and (iii) RSUs that are intended to satisfy the performance-based condition for deductibility under Section 162(m) of the Internal Revenue Code. According to the terms of the 2006 Plan, for purposes of determining the number of shares available for grant, each share underlying a stock option award reduces the number available by one share and each share underlying a restricted stock award, RSU or PSU reduces the number available by two shares. The per share exercise price of options granted under the 2006 Plan cannot be less than the closing price of the common stock on the date of grant. Net income for the twenty-six weeks endedJuly 30, 2017 and July 31, 2016 included $21.1 million and $19.5 million, respectively, of pre-tax expense related to stock-based compensation, with related recognized income tax benefits of $6.5 million and $5.8 million, respectively. Effective the first quarter of 2017, the Company adopted an update to accounting guidance that simplifies several aspects of accounting for share-based payment award transactions, which resulted in the Company’s election to recognize forfeitures as they occur rather than continue to estimate expected forfeitures in determining compensation expense. This accounting change was applied on a modified retrospective basis and resulted in a cumulative-effect adjustment to decrease beginning retained earnings by $0.8 million, with an offsetting increase to additional paid in capital of $1.1 million and an increase to deferred tax assets of $0.3 million. Please see Note 20, “Recent Accounting Guidance,” for a further discussion.The Company receives a tax deduction for certain transactions associated with its stock plan awards. The actual income tax benefits realized from these transactions for the twenty-six weeks endedJuly 30, 2017 and July 31, 2016 were $8.4 million and $5.8 million, respectively. As a result of the Company’s adoption of the update discussed above, the Company recognized $0.1 million of discrete net excess tax benefits related to share-based payments in its provision for income taxes for the twenty-six weeks endedJuly 30, 2017. Prior to the adoption of this update, the Company recognized excess tax benefits or tax deficiencies in equity as a component of additional paid in capital.  Stock OptionsStock options currently outstanding are generally exercisable in four equal annual installments commencing one year after the date of grant. The vesting of such options outstanding is also generally accelerated upon retirement (as defined in the 2006 Plan). Such options are granted with a 10-year term.The Company estimates the fair value of stock options granted at the date of grant using the Black-Scholes-Merton model. The estimated fair value of the options is expensed over the options’ vesting periods. The following summarizes the assumptions used to estimate the fair value of service-based stock options granted during the twenty-six weeks endedJuly 30, 2017 and July 31, 2016: Twenty-Six Weeks Ended 7/30/17 7/31/16Weighted average risk-free interest rate2.10% 1.45%Weighted average expected option term (in years)    6.25 6.25Weighted average Company volatility29.46% 34.64%Expected annual dividends per share    $0.15 $0.15Weighted average grant date fair value per option$33.50 $35.60The risk-free interest rate is based on United States Treasury yields in effect at the date of grant for periods corresponding to the expected option term. The expected option term represents the weighted average period of time that options granted are expected to be outstanding, based on vesting schedules and the contractual term of the options. Company volatility is based on the historical volatility of the Company’s common stock over a period of time corresponding to the expected option term. Expected dividends are based on the Company’s common stock cash dividend rate at the date of grant. The Company has continued to utilize the simplified method to estimate the expected term for its “plain vanilla” stock options granted due to a lack of relevant historical data resulting, in part, from changes in the pool of employees receiving option grants. The Company will continue to evaluate the appropriateness of utilizing such method.Service-based stock option activity for the twenty-six weeks endedJuly 30, 2017 was as follows:(In thousands, except per option data)Options Weighted Average Exercise Price Per OptionOutstanding at January 29, 20171,466 $75.74  Granted142 101.94  Exercised105 66.49  Cancelled10 108.23Outstanding at July 30, 20171,493 $78.67Exercisable at July 30, 20171,062 $68.51Restricted Stock UnitsRSUs granted to employees since 2016 generally vest in four equal annual installments commencing one year after the date of grant. Outstanding RSUs granted to employees prior to 2016 generally vest in three annual installments of 25%, 25% and 50% commencing two years after the date of grant. Service-based RSUs granted to non-employee directors vest in full one year after the date of grant. The underlying RSU award agreements (excluding agreements for non-employee director awards) generally provide for accelerated vesting upon the award recipient’s retirement (as defined in the 2006 Plan). The fair value of RSUs is equal to the closing price of the Company’s common stock on the date of grant and is expensed over the RSUs’ vesting periods.  RSU activity for the twenty-six weeks endedJuly 30, 2017 was as follows:(In thousands, except per RSU data)RSUs Weighted Average Grant Date Fair Value Per RSUNon-vested at January 29, 2017812 $105.96  Granted441 103.04  Vested247 108.98  Cancelled38 105.19Non-vested at July 30, 2017968 $103.89Performance Share UnitsThe Company granted contingently issuable PSUs to certain of the Company’s senior executives during 2015, 2016 and 2017 subject to a three-year performance period. For such awards, the final number of shares to be earned, if any, is contingent upon the Company’s achievement of goals for the applicable performance period, of which 50% is based upon the Company’s absolute stock price growth during the applicable performance period and 50% is based upon the Company’s total shareholder return during the applicable performance period relative to other companies included in the S&P 500 as of the date of grant. The Company records expense ratably over the applicable vesting period regardless of whether the market condition is satisfied because the awards are subject to market conditions. The fair value of the awards granted in the first quarters of 2017 and 2016 was established for each grant on the grant date using the Monte Carlo simulation model, which was based on the following assumptions: 2017 2016Risk-free interest rate1.49% 1.04%Expected Company volatility31.29% 28.33%Expected annual dividends per share$0.15 $0.15Weighted average grant date fair value per PSU$96.81 $87.16Certain of the awards granted in the first quarters of 2017 and 2016 are subject to a holding period of one year after the vesting date. For such awards, the grant date fair value was discounted 12.67% and 12.99%, respectively, for the restriction of liquidity. PSU activity for the twenty-six weeks endedJuly 30, 2017 was as follows:(In thousands, except per PSU data)PSUs Weighted Average Grant Date Fair Value Per PSUNon-vested at January 29, 2017125 $92.32  Granted72 96.81  Vested— —  Cancelled— —Non-vested at July 30, 2017197 $93.97 |

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| - Definition
The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -URI http://asc.fasb.org/topic&trid=2228938Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -URI http://asc.fasb.org/subtopic&trid=2208855
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No definition available.
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