Condensed Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 30, 2012	Apr. 30, 2011	Apr. 30, 2012	Apr. 30, 2011
Revenue:
Time-based license	$ 363,580	$ 318,762	$ 719,474	$ 614,371
Upfront license	22,333	25,014	50,845	51,549
Maintenance and service	46,648	49,894	87,738	92,394
Total revenue	432,561	393,670	858,057	758,314
Cost of revenue:
License	57,592	51,146	115,314	101,669
Maintenance and service	19,215	19,974	37,959	40,521
Amortization of intangible assets	23,699	14,908	37,087	28,143
Total cost of revenue	100,506	86,028	190,360	170,333
Gross margin	332,055	307,642	667,697	587,981
Operating expenses:
Research and development	151,230	123,169	284,105	243,909
Sales and marketing	108,836	99,562	204,240	178,886
General and administrative	49,948	29,470	83,787	59,335
Amortization of intangible assets	4,905	3,756	8,426	7,504
Total operating expenses	314,919	255,957	580,558	489,634
Operating income	17,136	51,685	87,139	98,347
Other income (expense), net	6,353	5,574	10,179	11,244
Income before provision for income taxes	23,489	57,259	97,318	109,591
Provision (benefit) for income taxes	2,518	(23,855)	19,653	(19,749)
Net income	$ 20,971	$ 81,114	$ 77,665	$ 129,340
Net income per share:
Basic	$ 0.14	$ 0.55	$ 0.54	$ 0.87
Diluted	$ 0.14	$ 0.53	$ 0.52	$ 0.84
Shares used in computing per share amounts:
Basic	145,948	148,461	144,877	148,738
Diluted	149,297	152,593	148,259	153,198