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Earnings Per Share - Additional Information (Detail) (Equity Option [Member])
3 Months Ended 6 Months Ended
Aug. 02, 2014
Aug. 03, 2013
Aug. 02, 2014
Aug. 03, 2013
Equity Option [Member]
       
Dilutive Securities Included And Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Number of antidilutive stock options not included in computation of diluted earnings per share 1,600,000 1,700,000 487,000 596,000