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Share Based Compensation (Tables)
3 Months Ended
Apr. 28, 2012
Share Based Compensation [Abstract]  
Stock option activity
Stock OptionsNumber of Underlying Shares Weighted-Average Exercise Price Aggregate Intrinsic Value Weighted-Average Remaining Contractual Life
Outstanding at January 28, 2012 714,997 $60.72     
Granted -   -     
Exercised (3,750)   26.60     
Forfeited or cancelled -   -     
Outstanding at April 28, 2012 711,247 $60.90 $4,552,433  4.3
          
Stock options exercisable at April 28, 2012 695,247 $61.83 $4,067,823  4.2
          
Stock options expected to become exercisable in the future as of April 28, 2012 15,454 $20.58 $468,174  6.6
The weighted-average fair value and assumptions (stock appreciation rights)
   
  Thirteen Weeks Ended
  Chairman and Chief Executive             
   Officer Other Executive Officers All Other Associates
  April 28, 2012 April 30, 2011 April 28, 2012 April 30, 2011 April 28, 2012April 30, 2011
Grant date market price$n/a $54.87 $52.89 $54.87 $52.77 $54.87
Exercise price$n/a $54.87 $52.89 $54.87 $52.77 $54.87
Fair value$n/a $22.09 $23.53 $22.29 $23.06 $21.86
Assumptions:                 
 Price volatility n/a  53%  56%  53%  61%  55%
 Expected term (Years) n/a  4.6  5.0  4.7  4.1  4.1
 Risk-free interest rate n/a  1.9%  1.3%  2.0%  1.0%  1.7%
 Dividend yield n/a  1.6%  1.1%  1.6%  1.1%  1.6%
Stock Appreciation Rights Activity
   Number of       Weighted-Average 
   Underlying Weighted-Average Aggregate  Remaining 
Stock Appreciation RightsShares Exercise Price Intrinsic Value Contractual Life 
Outstanding at January 28, 2012 9,039,334 $39.66      
 Granted:          
  Other Executive Officers 212,500   52.89      
  All Other Associates 135,600   52.77      
 Exercised (16,050)   35.60      
 Forfeited or cancelled (37,575)   43.65      
Outstanding at April 28, 2012 9,333,809 $40.15 $114,461,086  5.1 
Stock appreciation rights exercisable          
 at April 28, 2012 1,832,658 $42.51 $ 17,285,785  5.7 
Stock appreciation rights expected to become           
 exercisable in the future as of April 28, 2012 7,397,246 $39.45 $ 96,715,731  4.9 
Restricted stock unit activity
       
Restricted Stock Units  Number of Underlying Shares Weighted-Average Grant Date Fair Value 
Non-vested at January 28, 2012  1,189,292 $49.11 
Granted  502,025  50.62 
Vested  (304,256)  52.21 
Forfeited  (108,106)  59.77 
Non-vested at April 28, 2012  1,278,955 $48.06