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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
May 03, 2014
Week
May 04, 2013
Feb. 01, 2014
Week
Feb. 02, 2013
Summary Of Significant Accounting Policies [Line Items]        
Weeks in the fiscal year 52   52  
Share-based compensation $ 19,785,000 $ 16,549,000    
Options to purchase common stock exercised 1.1      
Common stock outstanding 31.4      
Highly liquid investments maximum maturity days 90 days      
Cash and cash equivalents 2,059,296,000 1,989,835,000 2,149,746,000 1,811,957,000
In-transit inventory accrual 409,300,000 433,500,000 451,600,000  
Outside United States
        
Summary Of Significant Accounting Policies [Line Items]        
Cash and cash equivalents 991,800,000      
Reinvest Undistributed Earnings
        
Summary Of Significant Accounting Policies [Line Items]        
Cash and cash equivalents $ 281,900,000      
Minimum
        
Summary Of Significant Accounting Policies [Line Items]        
Short-term investments maturity term 90 days      
Maximum
        
Summary Of Significant Accounting Policies [Line Items]        
Short-term investments maturity term 1 year