XML 75 R60.htm IDEA: XBRL DOCUMENT v3.7.0.1
Stockholders' Equity (Restricted Stock Activity, Narrative) (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
12 Months Ended
Jan. 28, 2017
Jan. 30, 2016
Jan. 31, 2015
Restricted Stock [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unamortized compensation expense $ 101.6 $ 94.5  
Weighted average remaining period of unrecognized compensation expense 1 year 10 months 2 days    
Intrinsic value per share, end of period (in dollars per share) $ 65.33    
Intrinsic value, end of period $ 363.4    
Treasury stock shares acquired (in shares) 0.7 1.3 1.1
Treasury stock, number of shares held (in shares) 11.8 11.1  
Restricted Stock [Member] | Minimum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Restricted stock vesting period 3 years    
Restricted Stock [Member] | Maximum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Restricted stock vesting period 5 years    
2008 Equity Incentive Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares available for new restricted stock awards (in shares) 12.1    
2008 Equity Incentive Plan [Member] | Restricted Stock [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares available for new restricted stock awards (in shares) 12.1 12.7 13.3