Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Sep. 30, 2017	Oct. 01, 2016
Earnings Per Share, Basic and Diluted [Abstract]
Net income	$ 81,157	$ 64,712	$ 218,543	$ 164,609
Weighted-average common shares used to calculate basic net income per share (in shares)	273,156	280,622	271,739	288,476
Stock-based awards	8,244	6,851	7,815	6,893
Weighted average common shares used to calculate diluted net income per share (in shares)	281,400	287,473	279,554	295,369
Net income per share - basic (in usd per share)	$ 0.30	$ 0.23	$ 0.80	$ 0.57
Net income per share - diluted (in usd per share)	$ 0.29	$ 0.23	$ 0.78	$ 0.56