STOCK-BASED COMPENSATION (Details 2) (USD $)	3 Months Ended		6 Months Ended		3 Months Ended	6 Months Ended				3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended	6 Months Ended
	Jul. 28, 2012	Jul. 30, 2011	Jul. 28, 2012	Jul. 30, 2011	Apr. 27, 2012 Board of Directors	Jul. 28, 2012 Stock Option Plans Years	Jul. 28, 2012 Deferred and Restricted Stock ("Deferred Awards") Years	Jul. 28, 2012 Deferred and Restricted Stock ("Deferred Awards") Chief Executive Officer and President	Jul. 28, 2012 Deferred and Restricted Stock ("Deferred Awards") Employee and new hire awards	Jul. 28, 2012 Restricted stock	Jul. 30, 2011 Restricted stock	Jul. 28, 2012 Restricted stock	Jul. 30, 2011 Restricted stock	Jul. 28, 2012 Performance awards	Jul. 30, 2011 Performance awards	Jul. 28, 2012 Performance awards Years	Jul. 30, 2011 Performance awards	Apr. 27, 2012 Performance awards Chief Executive Officer and President	Jul. 28, 2012 Performance awards Chief Executive Officer and President	Jul. 28, 2012 Performance awards Employee and new hire awards
Stock-based compensation
Allocated Share-based Compensation Expense	$ 3,960,000	$ 3,202,000	$ 6,957,000	$ 5,945,000						$ 3,224,000	$ 2,572,000	$ 5,601,000	$ 4,956,000	$ 736,000	$ 630,000	$ 1,356,000	$ 989,000
Vesting period (in years)			1	3					3
Minimum percentage of Target Shares which can be earned by the participants (as a percent)																		50.00%		50.00%
Maximum percentage of Target Shares that can be earned by the participants (as a percent)			200.00%															200.00%		200.00%
Percentage of Target Shares paid out if final operating income below threshold (as a percent)																100.00%		0.00%		0.00%
Deferred and Performance Awards
Unvested awards at the beginning of the period (in shares)							406,000									6,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period					16,032		460,000	196,768	246,034							230,000			100,180	129,696
Vested (in shares)							(116,000)									(2,000)
Forfeited (in shares)							(81,000)									(26,000)
Unvested awards at the end of the period (in shares)							669,000							208,000		208,000
Weighted Average Grant Date Fair Value
Unvested awards at the beginning of the period (in dollars per share)							$ 47.96									$ 46.08
Granted (in shares)							$ 48.51									$ 48.51
Vested (in dollars per share)							$ 49.55									$ 46.48
Forfeited (in dollars per share)							$ 49.41							$ 47.66		$ 47.66
Unvested awards at the end of the period (in dollars per share)							$ 47.89							$ 48.57		$ 48.57
Target shares expected to be earned, weighted-average percentage (as a percent)																87.50%
Unrecognized costs and period of recognition
Unrecognized stock-based compensation expense (in dollars)							26,200,000							7,300,000		7,300,000
Weighted average period for recognition of unrecognized stock-based compensation expense (in years)							2.4									2.2
Number of Options
Options outstanding at the beginning of the period (in shares)						154,000
Exercised (in shares)						(32,000)
Forfeited (in shares)						(1,000)
Granted (in shares)						0
Options exercisable (in shares)						121,000
Weighted Average Exercise Price
Options outstanding at the beginning of the period (in dollars per share)						$ 30.98
Exercised (in dollars per share)						$ 31.44
Forfeited (in dollars per share)						$ 24.14
Options outstanding at the end of the period (in dollars per share)						$ 30.91
Granted (in dollars per share)						$ 0
Weighted Average Remaining Contractual Life (in years)
Options outstanding at the beginning of the period (in years)						4.2
Options outstanding at the end of the period (in years)						3.9
Aggregate Intrinsic Value
Options outstanding at the beginning of the period (in dollars)						2,943,000
Exercised (in dollars)						588,000
Forfeited (in dollars)						19,000
Options outstanding at the end of the period (in dollars)						$ 2,364,000