Condensed Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Revenues:
Product and licenses	$ 193,153		$ 201,443		$ 632,369		$ 621,741
Software as a service	165,253		148,179		483,164		429,603
License updates and maintenance	358,266		329,384		1,049,065		968,017
Professional services	42,322		33,725		126,775		96,653
Total net revenues	758,994		712,731		2,291,373		2,116,014
Cost of net revenues:
Cost of product and license revenues	24,045		26,971		88,144		84,465
Cost of services and maintenance revenues	87,981		72,632		254,763		208,241
Amortization of product related intangible assets	23,959		24,330		102,660		73,381
Total cost of net revenues	135,985		123,933		445,567		366,087
Gross margin	623,009		588,798		1,845,806		1,749,927
Operating expenses:
Research and development	137,877		127,049		411,870		389,840
Sales, marketing and services	318,252		300,416		956,287		915,194
General and administrative	95,203		63,580		242,606		193,708
Amortization of other intangible assets	9,956		10,386		32,855		31,322
Restructuring	3,124	[1]	0	[1]	17,285	[1]	0	[1]
Total operating expenses	564,412		501,431		1,660,903		1,530,064
Income from operations	58,597		87,367		184,903		219,863
Interest income	2,411		2,079		6,705		6,062
Interest expense	10,551		41		17,601		102
Other (expense) income, net	(2,235)		1,400		(6,002)		49
Income before income taxes	48,222		90,805		168,005		225,872
Income tax expense	690		14,075		11,510		24,993
Net income	$ 47,532		$ 76,730		$ 156,495		$ 200,879
Earnings per share:
Basic (in dollars per share)	$ 0.29		$ 0.41		$ 0.91		$ 1.07
Diluted (in dollars per share)	$ 0.29		$ 0.41		$ 0.90		$ 1.06
Weighted average shares outstanding:
Basic (in shares)	164,229		187,459		172,622		187,120
Diluted (in shares)	165,713		188,980		174,023		188,830

[1] Represents expenses presented to management on a consolidated basis only and not allocated to the operating segments.