Condensed Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Total net revenues	$ 1,074.4	$ 998.0
Cost of revenues:
Total cost of revenues	458.8	418.7
Gross margin	615.6	579.3
Operating expenses:
Research and development	254.7	232.5
Sales and marketing	252.7	239.2
General and administrative	61.1	59.3
Restructuring charges	19.3	8.9
Total operating expenses	587.8	539.9
Operating income	27.8	39.4
Loss on extinguishment of debt	(60.6)	0.0
Other expense, net	(5.0)	(11.1)
Income (loss) before income taxes	(37.8)	28.3
Income tax (benefit) provision	(6.7)	7.9
Net (loss) income	$ (31.1)	$ 20.4
Net (loss) income per share:
Basic (in dollars per share)	$ (0.10)	$ 0.06
Diluted, (in dollars per share)	$ (0.10)	$ 0.06
Weighted-average shares used to compute net (loss) income per share:
Basic (in shares)	326.3	330.8
Diluted (in shares)	326.3	335.1
Product
Total net revenues	$ 672.4	$ 608.8
Cost of revenues:
Total cost of revenues	316.5	269.0
Service
Total net revenues	402.0	389.2
Cost of revenues:
Total cost of revenues	$ 142.3	$ 149.7