Condensed Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Net revenues:
Product	$ 917.2	$ 862.1	$ 1,746.1	$ 1,615.1
Service	391.7	359.2	783.8	704.1
Total net revenues	1,308.9	1,221.3	2,529.9	2,319.2
Cost of revenues:
Product	360.2	328.3	690.4	606.2
Service	146.8	136.6	291.0	265.7
Total cost of revenues	507.0	464.9	981.4	871.9
Gross margin	801.9	756.4	1,548.5	1,447.3
Operating expenses:
Research and development	240.2	247.9	516.4	498.9
Sales and marketing	239.9	243.7	484.1	475.5
General and administrative	55.6	58.6	106.1	118.0
Restructuring charges	8.0	2.4	27.4	2.4
Total operating expenses	543.7	552.6	1,134.0	1,094.8
Operating income	258.2	203.8	414.5	352.5
Other expense, net	(13.0)	(11.6)	(28.7)	(33.8)
Income before income taxes	245.2	192.2	385.8	318.7
Income tax provision	65.4	52.2	97.2	87.3
Net income	$ 179.8	$ 140.0	$ 288.6	$ 231.4
Net income per share:
Basic (in dollars per share)	$ 0.47	$ 0.37	$ 0.76	$ 0.60
Diluted, (in dollars per share)	$ 0.47	$ 0.36	$ 0.74	$ 0.60
Shares used in computing net income per share:
Basic (in shares)	380.4	382.8	380.6	383.0
Diluted (in shares)	385.6	386.3	387.6	388.6
Cash dividends declared per common stock (in dollars per share)	$ 0.10	$ 0.10	$ 0.20	$ 0.20