XML 25 R28.htm IDEA: XBRL DOCUMENT v2.4.0.8
Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)
Share data in Millions, unless otherwise specified
 3 Months Ended 6 Months Ended 12 Months Ended 12 Months Ended 6 Months Ended
Aug. 02, 2014
Aug. 03, 2013
Aug. 02, 2014
Aug. 03, 2013
Feb. 01, 2014
Week
Feb. 02, 2013
Jan. 31, 2015
Scenario, Forecast
Week
Aug. 02, 2014
Outside United States
Aug. 02, 2014
Reinvest Undistributed Earnings
Aug. 02, 2014
Minimum
Aug. 02, 2014
Maximum
Summary Of Significant Accounting Policies [Line Items]                      
Weeks in the fiscal year         52   52        
Share-based compensation $ 22,200,000 $ 19,200,000 $ 42,000,000 $ 35,679,000              
Options to purchase common stock exercised 0.6   1.7                
Common stock outstanding 30.7   30.7                
Highly liquid investments maximum maturity days     90 days                
Short-term investments maturity term                   90 days 1 year
Cash and cash equivalents 2,183,330,000 1,858,798,000 2,183,330,000 1,858,798,000 2,149,746,000 1,811,957,000   1,068,600,000 322,600,000    
In-transit inventory accrual $ 472,600,000 $ 467,200,000 $ 472,600,000 $ 467,200,000 $ 451,600,000