Share Repurchases - Additional Information (Detail) - USD ($)	6 Months Ended		48 Months Ended
	Jun. 28, 2015	Jun. 29, 2014	Jun. 28, 2015	Nov. 30, 2012	Jul. 31, 2011
Equity, Class of Treasury Stock [Line Items]
Purchase of common stock				$ 200,000,000	$ 150,000,000
Payments under share repurchase program		$ 31,197,000
Share Repurchase Plan 2011 [Member]
Equity, Class of Treasury Stock [Line Items]
Payments under share repurchase program			$ 310,900,000
Repurchase of shares	0		6,700,000
Repurchase of shares average price per share			$ 46.54