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Property and Equipment - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Feb. 02, 2013
Jan. 28, 2012
Jan. 29, 2011
Cost And Accumulated Depreciation And Amortization Of Property Plant And Equipment [Line Items]      
Depreciation expense $ 24.3 $ 26.2 $ 27.8