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Summary of Restricted Stock Unit Activity (Detail) (Restricted Stock Units (RSUs), USD $)
 12 Months Ended
Feb. 02, 2014
Feb. 03, 2013
Jan. 29, 2012
Restricted Stock Units (RSUs)
      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Balance at February 3, 2013, shares 2,772,426    
Granted, shares 959,160    
Released, shares (460,700)    
Cancelled, shares (191,235)    
Balance at February 2, 2014, shares 3,079,651 2,772,426  
Vested plus expected to vest at February 2, 2014, shares 2,105,508    
Balance at February 3, 2013, weighted average grant date fair value $ 34.61    
Granted, weighted average grant date fair value $ 53.59 $ 37.94 $ 39.27
Released, weighted average grant date fair value $ 34.57    
Cancelled, weighted average grant date fair value $ 41.28    
Balance at February 2, 2014, weighted average grant date fair value $ 40.11 $ 34.61  
Vested plus expected to vest at February 2, 2014, weighted average grant date fair value $ 39.99    
weighted average contractual term remaining (years) 1 year 11 months 5 days    
Vested plus expected to vest at February 2, weighted average contractual term remaining (years) 1 year 10 months 24 days    
Balance at February 2, 2014 $ 167,903,000 [1]    
Vested plus expected to vest at February 2, 2014 $ 114,792,000 [1]    
[1] Intrinsic value for outstanding and unvested restricted stock units is based on the market value of our common stock on the last business day of the fiscal year (or $54.52).