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Stock-Based Compensation and Employee Stock Plans (Details 3) (USD $)
In Millions, except Share data, unless otherwise specified
12 Months Ended
Feb. 02, 2013
Jan. 28, 2012
Jan. 29, 2011
Restricted Stock
     
Stock-Based Compensation and Employee Stock Plans      
Vesting period 3 years    
Restricted stock activity      
Nonvested at the beginning of the period (in shares) 2,090,433 1,991,068 784,918
Granted (in shares) 542,221 658,393 1,383,273
Vested (in shares) (381,278) (304,068)  
Forfeited (in shares) (159,281) (254,960) (177,123)
Nonvested at the end of the period (in shares) 2,092,095 2,090,433 1,991,068
Weighted Average Grant Date Fair Value      
Nonvested at beginning of the period (in dollars per share) $ 28.16 $ 24.11 $ 19.71
Granted (in dollars per share) $ 48.55 $ 39.54 $ 26.48
Vested (in dollars per share) $ 15.09 $ 27.12  
Forfeited (in dollars per share) $ 32.76 $ 27.12 $ 23.12
Nonvested at the end of the period (in dollars per share) $ 35.48 $ 28.16 $ 24.11
Unrecognized compensation expense      
Unrecognized stock-based compensation expense related to nonvested awards, net of estimated forfeitures $ 23.1    
Weighted-average period over which unrecognized compensation expense is expected to be recognized 10 months 20 days    
Additional disclosures      
Restricted common stock outstanding (in shares) 2,092,095 2,090,433 1,991,068
Performance shares
     
Stock-Based Compensation and Employee Stock Plans      
Vesting period 3 years    
Restricted stock activity      
Nonvested at the end of the period (in shares) 654,194    
Additional disclosures      
Restricted common stock outstanding (in shares) 654,194    
Expected percentage of outstanding nonvested restricted stock that will vest by a specified date 75.00%