Unaudited Condensed Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 31, 2018	Jul. 31, 2017	Jul. 31, 2018	Jul. 31, 2017
Revenue:
Time-based products	$ 570,053	$ 503,530	$ 1,697,756	$ 1,493,991
Upfront products	99,579	100,251	291,143	263,310
Maintenance and service	110,082	91,600	337,077	270,935
Total revenue	779,714	695,381	2,325,976	2,028,236
Cost of revenue:
Products	115,437	107,104	335,030	304,982
Maintenance and service	49,790	43,828	150,674	122,618
Amortization of intangible assets	20,154	18,614	59,612	59,720
Total cost of revenue	185,381	169,546	545,316	487,320
Gross margin	594,333	525,835	1,780,660	1,540,916
Operating expenses:
Research and development	277,402	228,663	793,947	664,326
Sales and marketing	157,953	131,520	455,653	395,242
General and administrative	84,336	46,350	199,517	170,654
Amortization of intangible assets	10,651	7,906	30,926	23,806
Restructuring charges	23	6,026	1,917	31,038
Total operating expenses	530,365	420,465	1,481,960	1,285,066
Operating income	63,968	105,370	298,700	255,850
Other income (expense), net	7,925	7,421	12,595	27,322
Income before income taxes	71,893	112,791	311,295	283,172
Provision (benefit) for income taxes	(7,516)	(3,960)	133,105	26,527
Net income	$ 79,409	$ 116,751	$ 178,190	$ 256,645
Net income per share:
Basic (in USD per share)	$ 0.53	$ 0.78	$ 1.20	$ 1.71
Diluted (in USD per share)	$ 0.52	$ 0.75	$ 1.16	$ 1.66
Shares used in computing per share amounts:
Basic (shares)	148,490	150,214	148,760	150,460
Diluted (shares)	152,614	154,683	153,118	154,787