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Stock-Based Compensation (Tables)
9 Months Ended
Oct. 27, 2012
Stock-Based Compensation [Abstract]  
Weighted Average Assumptions Relating To The Valuation Of Stock Options
    Thirty-Nine     Thirteen Weeks  
    Weeks Ended     Ended  
    October 29, 2011     October 29, 2011  
Weighted average fair value of grants $ 6.61   $ 5.68  
Expected volatility   66 %   65 %
Expected term (years)   4.5     4.5  
Risk-free interest rate   1.8 %   0.8 %
Expected dividend yield   1.5 %   1.6 %
Summary Of Stock Option Activity
        Weighted Average
  Number of Shares     Exercise Price
Outstanding, beginning of period 6,303,378   $ 13.09
Granted    
Exercised (1,802,823 )   6.87
Canceled or expired (308,481 )   18.27
Outstanding, end of period 4,192,074     15.38
Exercisable at October 27, 2012 2,910,392     16.34
Summary Of Restricted Stock Activity
       
       
  Number of Shares     Weighted Average
Grant Date Fair
Value
Unvested, beginning of period 2,107,951   $ 11.36
Granted 1,624,322     15.03
Vested (410,863 )   13.32
Canceled (195,203 )   13.66
Unvested, end of period 3,126,207     12.85
Summary Of Performance-Based Restricted Stock Unit Activity
        Weighted Average
        Grant Date Fair
  Number of Units     Value
Unvested, beginning of period   $
Granted 696,596     15.01
Vested    
Canceled (26,600 )   15.01
Unvested, end of period 669,996     15.01