Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Net revenues:
Product	$ 900.8	$ 838.2	$ 2,546.4	$ 2,414.8
Service	284.8	280.1	849.1	809.8
Total net revenues	1,185.6	1,118.3	3,395.5	3,224.6
Cost of revenues:
Product	325.5	334.7	925.0	907.9
Service	113.6	109.8	332.7	340.9
Total cost of revenues	439.1	444.5	1,257.7	1,248.8
Gross margin	746.5	673.8	2,137.8	1,975.8
Operating expenses:
Research and development	264.6	288.2	784.5	826.5
Sales and marketing	268.7	261.0	790.1	778.2
General and administrative	61.1	49.4	157.7	152.9
Amortization of purchased intangible assets	1.1	1.1	3.5	3.5
Restructuring and other charges	6.0	31.0	21.0	36.2
Acquisition and litigation charges	0	0.3	10.5	1.3
Total operating expenses	601.5	631.0	1,767.3	1,798.6
Operating income	145.0	42.8	370.5	177.2
Other expense, net	(7.5)	(4.0)	(30.2)	(25.6)
Income before income taxes	137.5	38.8	340.3	151.6
Income tax provision	38.4	22.0	52.3	60.8
Net income	$ 99.1	$ 16.8	$ 288.0	$ 90.8
Net income per share:
Basic (in dollars per share)	$ 0.20	$ 0.03	$ 0.57	$ 0.17
Diluted (in dollars per share)	$ 0.19	$ 0.03	$ 0.56	$ 0.17
Shares used in computing net income per share:
Basic (in shares)	501.5	521.2	503.0	525.4
Diluted (in shares)	508.6	524.5	510.7	530.3