Earnings Per Share - Computation of Basic EPS and Diluted EPS (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 03, 2015	Sep. 27, 2014	Oct. 03, 2015	Sep. 27, 2014
Earnings Per Share [Abstract]
Net income	$ 64,922	$ 72,234	$ 73,904	$ 147,680
Weighted average shares	152,203	155,760	154,955	155,300
Basic EPS (in dollars per share)	$ 0.43	$ 0.46	$ 0.48	$ 0.95
Weighted average shares, including the dilutive effect of stock-based awards (2,539 and 3,783 for the thirteen weeks ended October 3, 2015 and September 27, 2014, respectively, and 3,061 and 3,881 for the thirty-nine weeks ended October 3, 2015 and September 27, 2014, respectively)	154,742	159,543	158,016	159,181
Diluted EPS (in dollars per share)	$ 0.42	$ 0.45	$ 0.47	$ 0.93