Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 01, 2017	Apr. 02, 2016
Earnings Per Share, Basic and Diluted [Abstract]
Net income	$ 68,259	$ 50,562
Weighted-average common shares used to calculate basic net income per share (in shares)	270,173	296,615
Stock-based awards	7,563	6,819
Weighted average common shares used to calculate diluted net income per share (in shares)	277,736	303,434
Net income per share - basic (in usd per share)	$ 0.25	$ 0.17
Net income per share - diluted (in usd per share)	$ 0.25	$ 0.17