Weighted-Average Shares - Calculation of Weighted-Average Shares (Detail) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 29, 2013		Sep. 30, 2012		Sep. 29, 2013		Sep. 30, 2012
Earnings Per Share [Abstract]
Basic weighted-average common shares outstanding	87,339	[1]	85,824	[1]	87,578	[1]	85,554	[1]
Effect of dilutive stock options	2,020		1,434		1,872		1,666
Weighted-average common and common-equivalent shares outstanding	89,359	[1]	87,258	[1]	89,450	[1]	87,220	[1]

[1] Prior period results have been adjusted to reflect the two-for-one stock split effected in the form of a stock dividend which occurred in September 2013.