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Stock Repurchase Program and Dividend - Additional Information (Detail) (USD $)
1 Months Ended 3 Months Ended 6 Months Ended
Mar. 31, 2013
Aug. 04, 2013
Jul. 29, 2012
Aug. 04, 2013
Jul. 29, 2012
Stock Repurchase Program and Dividend [Line Items]          
Authorized amount for repurchase $ 750,000,000        
Stock Repurchase Program Period 3 years        
Common stock repurchased, shares   1,613,943 884,763 2,414,825 2,529,271
Common stock repurchased, average cost per share   $ 55.66 $ 35.43 $ 54.25 $ 36.80
Common stock repurchased, total cost   $ 89,832,000 $ 31,343,000 $ 131,006,000 $ 93,076,000
Cash dividend, per common share       $ 0.31 $ 0.22