Number of Shares for Grants (Detail)	6 Months Ended
	Jul. 30, 2011
Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vest in installments over 3 years, Stock-settled SARs	213,141	[1]
Maximum Share Equivalents
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vest in installments over 3 years, Stock-settled SARs	118,412	[1]

[1] All of the stock-settled SARs issued by the Company in the periods presented contain an appreciation cap, which limits the appreciation for which shares of common stock will be granted. The appreciation cap is limited to 125% of the fair market value of the underlying common stock on the grant date of the SAR, meaning that the maximum shares issuable under a SAR is 0.56 shares per SAR.