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Securities Repurchase Program - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended	9 Months Ended
	Oct. 27, 2012	Oct. 27, 2012	Oct. 29, 2011	Mar. 08, 2011	Nov. 16, 2012 Repurchase of Equity
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock repurchased additional approved amount				$ 200
Total authorized under the Securities Repurchase Program				600
Repurchases of Common stock, shares	0	3,081,430	4,197,097
Repurchases of Common stock, value		75.0	100.0
Total available for share repurchases under the Securities Repurchase Program	$ 109.1	$ 109.1			$ 109.1

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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- Definition

Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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