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Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)
Share data in Millions, unless otherwise specified
 3 Months Ended 12 Months Ended 12 Months Ended 3 Months Ended
May 04, 2013
Apr. 28, 2012
Feb. 02, 2013
Week
Jan. 28, 2012
May 04, 2013
Outside United States
May 04, 2013
Reinvest Undistributed Earnings
Feb. 01, 2014
Scenario, Forecast
Week
May 04, 2013
Minimum
D
May 04, 2013
Maximum
Y
Summary Of Significant Accounting Policies [Line Items]                  
Weeks in the fiscal year     53       52    
Share-based compensation $ 16,549,000 $ 14,271,000              
Options to purchase common stock exercised 2.2                
Common stock outstanding 34.2                
Highly liquid investments maximum maturity days 90 days                
Short-term investments maturity term               90 1
Cash and cash equivalents 1,989,835,000 1,563,691,000 1,811,957,000 1,507,112,000 822,500,000 276,200,000      
In-transit inventory accrual $ 433,500,000 $ 401,100,000 $ 418,300,000