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Stockholders' Equity (Restricted Stock Activity) (Details) (USD $)
In Millions, except Share data in Thousands, unless otherwise specified
12 Months Ended
Feb. 02, 2013
Jan. 28, 2012
Jan. 29, 2011
Restricted Stock [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]      
Unvested at beginning of period 5,353    
Awarded, Number of shares 954    
Released, Number of shares (1,700)    
Forfeited, Number of shares (47)    
Unvested at end of period 4,560 5,353  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]      
Unvested at beginning of period, Weighted average grant date fair value $ 23.23    
Awarded, Weighted average grant date fair value $ 50.24    
Released, Weighted average grant date fair value $ 20.19    
Forfeited, Weighted average grant date fair value $ 29.93    
Unvested at end of period, Weighted average grant date fair value $ 29.96 $ 23.23  
Unamortized compensation expense $ 75.8 $ 67.5  
Employee service share-based compensation, unrecognized compensation costs on nonvested awards, weighted average period of recognition 1 year 9 months 18 days    
Intrinsic value per share, end of period $ 59.43    
Intrinsic value, end of period $ 271.0    
Shares available for new restricted stock awards 7,202 7,811 8,770
Treasury Stock shares acquired 505 442 350
Treasury stock, number of shares held 3,858 3,354  
Restricted Stock [Member] | Minimum [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]      
Restricted stock vesting period 3 years    
Restricted Stock [Member] | Maximum [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]      
Restricted stock vesting period 5 years    
Restricted Stock Units (RSUs) [Member] | Minimum [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]      
Restricted stock vesting period 3 years    
Restricted Stock Units (RSUs) [Member] | Maximum [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]      
Restricted stock vesting period 5 years