Unaudited Condensed Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2017	Apr. 30, 2016	Apr. 30, 2017	Apr. 30, 2016
Revenue:
Time-based products	$ 501,096	$ 484,175	$ 990,461	$ 948,455
Upfront products	83,450	58,163	163,059	101,600
Maintenance and service	95,523	62,667	179,335	123,554
Total revenue	680,069	605,005	1,332,855	1,173,609
Cost of revenue:
Products	100,907	85,444	197,878	161,837
Maintenance and service	41,487	21,631	78,790	44,156
Amortization of intangible assets	19,634	24,555	41,106	55,081
Total cost of revenue	162,028	131,630	317,774	261,074
Gross margin	518,041	473,375	1,015,081	912,535
Operating expenses:
Research and development	223,015	216,172	435,663	412,877
Sales and marketing	137,211	120,926	263,722	243,546
General and administrative	83,438	41,553	124,304	81,250
Amortization of intangible assets	7,864	7,024	15,900	13,959
Restructuring charges	12,907	894	25,012	2,987
Total operating expenses	464,435	386,569	864,601	754,619
Operating income	53,606	86,806	150,480	157,916
Other income (expense), net	8,414	10,417	19,901	3,649
Income before income taxes	62,020	97,223	170,381	161,565
Provision (benefit) for income taxes	8,714	27,847	30,487	32,154
Net income	$ 53,306	$ 69,376	$ 139,894	$ 129,411
Net income per share:
Basic (in USD per share)	$ 0.35	$ 0.46	$ 0.93	$ 0.85
Diluted (in USD per share)	$ 0.34	$ 0.45	$ 0.90	$ 0.84
Shares used in computing per share amounts:
Basic (shares)	150,384	152,250	150,583	152,609
Diluted (shares)	154,861	154,536	154,754	154,921