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Net Income Per Share - Computation of Basic and Diluted Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 29, 2019	Mar. 30, 2018
Numerator:
Net income	$ 75,775	$ 115,857
Denominator:
Weighted-average shares of common stock outstanding used in computing basic net income per share (in shares)	300,542	296,421
Dilutive securities (in shares)	14,102	17,270
Weighted-average shares of common stock outstanding and dilutive securities used in computing diluted net income per share (in shares)	314,644	313,691
Net income per share, basic (in dollars per share)	$ 0.25	$ 0.39
Net income per share, diluted (in dollars per share)	$ 0.24	$ 0.37

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