Stock Repurchase Program And Dividend Policy - Additional Information (Detail) (USD $)	3 Months Ended	6 Months Ended		3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended
	Jul. 29, 2012	Jul. 29, 2012	Jul. 31, 2011	Jul. 31, 2011 January 2011 $125M Stock Repurchase Program	Jul. 31, 2011 January 2011 $125M Stock Repurchase Program	Jul. 29, 2012 January 2012 $225M Stock Repurchase Program	Jul. 29, 2012 January 2012 $225M Stock Repurchase Program
Stock Repurchase Program and Dividend Policy [Line Items]
Authorized amount for repurchase						$ 225,000,000	$ 225,000,000
Common stock repurchased, shares				806,282	1,566,508	884,763	2,529,271
Common stock repurchased, average cost per share				$ 38.75	$ 39.90	$ 35.43	$ 36.80
Common stock repurchased, total cost		93,076,000	62,496,000	31,246,000	62,496,000	31,343,000	93,076,000
Remaining authorized amount for repurchase						$ 62,500,000	$ 62,500,000
Cash dividend, per common share	$ 0.22