Condensed Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2016	May. 02, 2015	Apr. 30, 2016	May. 02, 2015
Net revenues:
Product	$ 428,193	$ 458,243	$ 909,360	$ 944,481
Service	95,113	88,332	188,230	178,333
Total net revenues	523,306	546,575	1,097,590	1,122,814
Cost of revenues:
Product	132,208	137,612	276,305	287,538
Service	40,787	36,754	82,159	73,384
Total cost of revenues	172,995	174,366	358,464	360,922
Gross margin	350,311	372,209	739,126	761,892
Operating expenses:
Research and development	89,263	91,870	182,520	177,101
Sales and marketing	148,933	143,078	300,760	283,316
General and administrative	22,791	20,722	45,220	45,393
Amortization of intangible assets	902	627	1,804	765
Acquisition and integration costs	5,757	2,344	5,757	2,344
Restructuring and other related benefits	0	(637)	(566)	(637)
Total operating expenses	267,646	258,004	535,495	508,282
Income from operations	82,665	114,205	203,631	253,610
Interest expense	(9,955)	(10,552)	(19,820)	(35,976)
Interest and other income (loss), net	1,091	466	1,760	(93)
Income before income tax	73,801	104,119	185,571	217,541
Income tax expense	30,716	27,079	48,840	53,234
Net income	$ 43,085	$ 77,040	$ 136,731	$ 164,307
Net income per share—basic	$ 0.11	$ 0.18	$ 0.34	$ 0.39
Net income per share—diluted	$ 0.11	$ 0.18	$ 0.33	$ 0.38
Shares used in per share calculation—basic	400,554	420,718	404,228	424,627
Shares used in per share calculation—diluted	408,748	433,234	411,917	436,195
Cash dividends declared per share	$ 0.045	$ 0.035	$ 0.090	$ 0.070