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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		9 Months Ended
	Sep. 27, 2019	Sep. 28, 2018	Sep. 27, 2019	Sep. 28, 2018
Numerator:
Net income	$ 97,452	$ 126,630	$ 252,269	$ 329,981
Denominator:
Weighted-average shares of common stock outstanding used in computing basic net income per share (in shares)	303,268	298,416	301,999	297,700
Dilutive securities (in shares)	12,185	13,930	13,047	15,500
Weighted-average shares of common stock outstanding and dilutive securities used in computing diluted net income per share (in shares)	315,453	312,346	315,046	313,200
Net income per share, basic (in dollars per share)	$ 0.32	$ 0.42	$ 0.84	$ 1.11
Net income per share, diluted (in dollars per share)	$ 0.31	$ 0.41	$ 0.80	$ 1.05

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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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