Condensed Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Aug. 01, 2015	Aug. 02, 2014	Aug. 01, 2015	Aug. 02, 2014
Net revenues:
Product	$ 463,200	$ 457,797	$ 1,407,681	$ 1,375,282
Service	88,619	87,667	266,952	271,627
Total net revenues	551,819	545,464	1,674,633	1,646,909
Cost of revenues:
Product	144,243	145,518	431,781	441,416
Service	35,672	38,233	109,056	116,818
Total cost of revenues	179,915	183,751	540,837	558,234
Gross margin	371,904	361,713	1,133,796	1,088,675
Operating expenses:
Research and development	85,072	84,152	262,173	261,862
Sales and marketing	144,883	137,262	428,199	409,524
General and administrative	20,422	22,140	65,815	63,395
Amortization of intangible assets	889	131	1,654	10,145
Acquisition and integration costs	789	0	3,133	0
Restructuring, goodwill impairment, and other related costs (benefits)	0	131	(637)	89,051
Gain on sale of network adapter business	0	0	0	(4,884)
Total operating expenses	252,055	243,816	760,337	829,093
Income from operations	119,849	117,897	373,459	259,582
Interest expense	(9,778)	(9,176)	(45,754)	(27,606)
Interest and other income, net	947	5,299	854	3,943
Income before income tax	111,018	114,020	328,559	235,919
Income tax expense	19,351	26,668	72,585	81,367
Net income	$ 91,667	$ 87,352	$ 255,974	$ 154,552
Net income per share—basic	$ 0.22	$ 0.20	$ 0.61	$ 0.35
Net income per share—diluted	$ 0.21	$ 0.20	$ 0.59	$ 0.34
Shares used in per share calculation—basic	417,299	432,448	422,184	436,396
Shares used in per share calculation—diluted	427,518	441,789	433,303	448,596
Cash dividends declared per share	$ 0.045	$ 0.035	$ 0.115	$ 0.035