Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Revenues:
License	$ 517,222	$ 464,806	$ 999,149	$ 883,805
Services	605,804	456,404	1,179,059	881,126
Total revenues	1,123,026	921,210	2,178,208	1,764,931
Operating expenses:
Cost of license revenues	56,553	48,928	113,296	104,946
Cost of services revenues	122,669	103,547	236,841	197,426
Research and development	248,594	189,241	470,984	358,404
Sales and marketing	391,501	314,560	754,913	617,484
General and administrative	91,799	78,042	173,099	146,277
Operating income	211,910	186,892	429,075	340,394
Investment income	6,945	3,715	12,688	7,121
Interest expense with EMC	(1,158)	(972)	(2,445)	(1,931)
Other income (expense), net	(3,560)	56,639	(1,275)	56,804
Income before income taxes	214,137	246,274	438,043	402,388
Income tax provision	22,408	26,116	54,878	56,418
Net income	191,729	220,158	383,165	345,970
Net income per weighted-average share, basic for Class A and Class B	$ 0.45	$ 0.52	$ 0.90	$ 0.83
Net income per weighted-average share, diluted for Class A and Class B	$ 0.44	$ 0.51	$ 0.88	$ 0.80
Weighted-average shares, basic for Class A and Class B	427,223	419,657	426,106	418,557
Weighted-average shares, diluted for Class A and Class B	434,647	430,473	434,014	429,984
Cost Of License Revenues [Member]
Operating expenses:
Stock-based Compensation	524	438	964	904
Cost Of Services Revenues [Member]
Operating expenses:
Stock-based Compensation	7,103	5,740	12,922	11,328
Research and Development Expense [Member]
Operating expenses:
Stock-based Compensation	48,027	46,074	87,404	87,958
Sales and Marketing Expense [Member]
Operating expenses:
Stock-based Compensation	33,883	23,264	59,117	45,787
General and Administrative Expense [Member]
Operating expenses:
Stock-based Compensation	$ 11,363	$ 9,926	$ 22,299	$ 20,038