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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		6 Months Ended
	Jun. 28, 2019	Jun. 29, 2018	Jun. 28, 2019	Jun. 29, 2018
Numerator:
Net income	$ 79,042	$ 87,494	$ 154,817	$ 203,351
Denominator:
Weighted-average shares of common stock outstanding used in computing basic net income per share (in shares)	302,188	297,336	301,365	296,874
Dilutive securities (in shares)	12,723	14,905	13,421	16,150
Weighted-average shares of common stock outstanding and dilutive securities used in computing diluted net income per share (in shares)	314,911	312,241	314,786	313,024
Net income per share, basic (in dollars per share)	$ 0.26	$ 0.29	$ 0.51	$ 0.68
Net income per share, diluted (in dollars per share)	$ 0.25	$ 0.28	$ 0.49	$ 0.65

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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