Unaudited Condensed Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2018	Apr. 30, 2017	Apr. 30, 2018	Apr. 30, 2017
Revenue:
Time-based products	$ 556,770	$ 501,096	$ 1,127,703	$ 990,461
Upfront products	99,960	83,450	191,564	163,059
Maintenance and service	120,106	95,523	226,995	179,335
Total revenue	776,836	680,069	1,546,262	1,332,855
Cost of revenue:
Products	108,199	100,907	219,593	197,878
Maintenance and service	50,130	41,487	100,884	78,790
Amortization of intangible assets	20,450	19,634	39,458	41,106
Total cost of revenue	178,779	162,028	359,935	317,774
Gross margin	598,057	518,041	1,186,327	1,015,081
Operating expenses:
Research and development	252,134	223,015	516,545	435,663
Sales and marketing	147,188	137,211	297,700	263,722
General and administrative	58,809	83,438	115,181	124,304
Amortization of intangible assets	10,736	7,864	20,275	15,900
Restructuring charges	2,176	12,907	1,894	25,012
Total operating expenses	471,043	464,435	951,595	864,601
Operating income	127,014	53,606	234,732	150,480
Other income (expense), net	(7,715)	8,414	4,670	19,901
Income before income taxes	119,299	62,020	239,402	170,381
Provision (benefit) for income taxes	16,827	8,714	140,621	30,487
Net income	$ 102,472	$ 53,306	$ 98,781	$ 139,894
Net income per share:
Basic (in USD per share)	$ 0.69	$ 0.35	$ 0.66	$ 0.93
Diluted (in USD per share)	$ 0.67	$ 0.34	$ 0.64	$ 0.90
Shares used in computing per share amounts:
Basic (shares)	149,034	150,384	149,245	150,583
Diluted (shares)	153,167	154,861	153,664	154,754