Condensed Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Total net revenues	$ 1,138.2	$ 1,133.1	$ 3,222.5	$ 3,237.3
Cost of revenues:
Total cost of revenues	480.4	454.7	1,365.8	1,339.8
Gross margin	657.8	678.4	1,856.7	1,897.5
Operating expenses:
Research and development	242.4	244.5	715.9	716.1
Sales and marketing	229.3	235.3	692.7	692.8
General and administrative	59.8	61.2	178.2	189.4
Restructuring charges (benefits)	1.2	(1.1)	14.9	35.6
Total operating expenses	532.7	539.9	1,601.7	1,633.9
Operating income	125.1	138.5	255.0	263.6
Other expense, net	(13.5)	(20.4)	(29.0)	(23.2)
Income before income taxes	111.6	118.1	226.0	240.4
Income tax (benefit) provision	(33.8)	18.8	(1.0)	63.8
Net income	$ 145.4	$ 99.3	$ 227.0	$ 176.6
Net income per share:
Basic (in dollars per share)	$ 0.44	$ 0.29	$ 0.69	$ 0.51
Diluted, (in dollars per share)	$ 0.43	$ 0.29	$ 0.68	$ 0.50
Weighted-average shares used to compute net income per share:
Basic (in shares)	330.9	342.2	330.9	345.5
Diluted (in shares)	334.5	345.5	335.2	350.1
Product
Total net revenues	$ 733.7	$ 743.2	$ 2,034.8	$ 2,075.8
Cost of revenues:
Total cost of revenues	327.7	304.0	918.4	888.3
Service
Total net revenues	404.5	389.9	1,187.7	1,161.5
Cost of revenues:
Total cost of revenues	$ 152.7	$ 150.7	$ 447.4	$ 451.5