Condensed Consolidated Statements Of Income (USD $) In Thousands, 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
Revenues:
Product and licenses	$ 201,443	$ 195,690	$ 621,741	$ 561,971
Software as a service	148,179	129,659	429,603	375,902
License updates and maintenance	329,384	285,051	968,017	822,113
Professional services	33,725	31,022	96,653	86,141
Total net revenues	712,731	641,422	2,116,014	1,846,127
Cost of net revenues:
Cost of product and license revenues	26,971	24,218	84,465	63,876
Cost of services and maintenance revenues	72,632	58,920	208,241	166,328
Amortization of product related intangible assets	24,330	22,930	73,381	56,565
Total cost of net revenues	123,933	106,068	366,087	286,769
Gross margin	588,798	535,354	1,749,927	1,559,358
Operating expenses:
Research and development	127,049	114,713	389,840	328,363
Sales, marketing and services	300,416	263,136	915,194	773,732
General and administrative	63,580	65,252	193,708	186,407
Amortization of other intangible assets	10,386	9,838	31,322	25,499
Total operating expenses	501,431	452,939	1,530,064	1,314,001
Income from operations	87,367	82,415	219,863	245,357
Interest income	2,079	2,059	6,062	7,965
Other income (expense), net	1,359	6,424	(53)	7,671
Income before income taxes	90,805	90,898	225,872	260,993
Income tax expense	14,075	12,653	24,993	22,475
Net income	$ 76,730	$ 78,245	$ 200,879	$ 238,518
Earnings per share:
Basic (in dollars per share)	$ 0.41	$ 0.42	$ 1.07	$ 1.28
Diluted (in dollars per share)	$ 0.41	$ 0.41	$ 1.06	$ 1.26
Weighted average shares outstanding:
Basic (in shares)	187,459	186,864	187,120	186,326
Diluted (in shares)	188,980	189,671	188,830	189,282