Share Repurchases - Additional Information (Detail) (USD $) Share data in Thousands, except Per Share data, unless otherwise specified	9 Months Ended				3 Months Ended	9 Months Ended	39 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Nov. 30, 2012	Jul. 31, 2011	Sep. 28, 2014 Share Repurchase Program [Member]	Sep. 28, 2014 Share Repurchase Program [Member]	Sep. 28, 2014 Share Repurchase Program [Member]
Equity, Class of Treasury Stock [Line Items]
Purchase of common stock			$ 200,000,000	$ 150,000,000
Repurchase of shares					400	900	6,300
Payments under share repurchase program	$ 62,197,000	$ 93,750,000			$ 31,000,000	$ 62,200,000	$ 280,900,000
Repurchase of shares average price per share					$ 71.80	$ 72.64	$ 44.77