Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 29, 2019	Mar. 30, 2019	Jun. 30, 2018	Mar. 31, 2018	Jun. 29, 2019	Jun. 30, 2018
Earnings Per Share, Basic and Diluted [Abstract]
Net Income	$ 107,235	$ 120,555	$ 75,149	$ 72,885	$ 227,790	$ 148,034
Weighted average common shares used to calculate basic net income per share	273,159		273,564		273,155	273,703
Stock-based awards	7,895		7,210		7,722	7,544
Weighted average common shares used to calculate diluted net income per share	281,054		280,774		280,877	281,247
Net income per share - basic	$ 0.39		$ 0.27		$ 0.83	$ 0.54
Net income per share - diluted	$ 0.38		$ 0.27		$ 0.81	$ 0.53