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STOCK-BASED COMPENSATION - STOCK OPTION ACTIVITY (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
6 Months Ended
Jul. 31, 2011
Aug. 01, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Reduction in Number of Shares to Be Granted by Each Option Award 1  
Stock-based compensation expense $ 20,650 $ 12,224
Maximum term, options (in years) 10  
Service-based stock option activity [Roll Forward]    
Service-based stock options, outstanding, beginning of period 2,853,000  
Service-based stock options, granted 195,000  
Service-based stock options, granted, weighted average price per option $ 65.16  
Service-based stock options, exercised 340,000  
Service-based stock options, cancelled 0  
Service-based stock options, exercisable 1,864,000  
Service-based stock options, outstanding, end of period 2,708,000  
Service-based stock options, outstanding, weighted average price per option, beginning of period $ 33.41  
Service-based stock options, exercised, weighted average price per option $ 34.02  
Service-based stock options, cancelled, weighted average price per option $ 0  
Service-based stock options, exercisable, weighted average price per option $ 32.60  
Service-based stock options, outstanding, weighted average price per option, end of period $ 35.62  
Assumptions used to estimate fair value of service-based stock options [Abstract]    
Weighted average risk-free interest rate 2.62% 2.99%
Weighted average expected option term (in years) 6.25 6.25
Weighted average expected volatility 44.35% 41.78%
Expected annual dividends per share $ 0.15 $ 0.15
Weighted average estimated fair value per option $ 29.81 $ 26.45
Stock Option [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Vesting installments 4  
Beginning vesting term one year after date of grant