Condensed Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Revenues:
Product and licenses	$ 193,083	$ 178,364
Software as a service	137,566	120,733
License updates and maintenance	315,738	264,525
Professional services	26,512	25,873
Total net revenues	672,899	589,495
Cost of net revenues:
Cost of product and license revenues	25,794	18,804
Cost of services and maintenance revenues	64,411	51,004
Amortization of product related intangible assets	24,709	16,535
Total cost of net revenues	114,914	86,343
Gross margin	557,985	503,152
Operating expenses:
Research and development	130,492	103,622
Sales, marketing and services	297,682	248,457
General and administrative	62,785	59,856
Amortization of other intangible assets	10,418	10,467
Total operating expenses	501,377	422,402
Income from operations	56,608	80,750
Interest income	1,962	3,078
Other (expense) income, net	(766)	722
Income before income taxes	57,804	84,550
Income tax (benefit) expense	(1,884)	16,283
Net income	$ 59,688	$ 68,267
Earnings per share:
Basic (in dollars per share)	$ 0.32	$ 0.37
Diluted (in dollars per share)	$ 0.32	$ 0.36
Weighted average shares outstanding:
Basic (in shares)	186,658	185,730
Diluted (in shares)	189,011	188,884