Condensed Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 28, 2012	Apr. 30, 2011	Apr. 28, 2012	Apr. 30, 2011
Net revenues
Product	$ 456,104	$ 457,495	$ 932,406	$ 914,524
Service	87,335	90,869	171,675	179,596
Total net revenues	543,439	548,364	1,104,081	1,094,120
Cost of revenues
Product	164,177	171,075	339,584	348,691
Service	42,180	48,680	82,646	95,937
Total cost of revenues	206,357	219,755	422,230	444,628
Gross margin	337,082	328,609	681,851	649,492
Operating expenses:
Research and development	92,931	91,941	182,250	183,349
Sales and marketing	158,855	156,979	311,543	309,646
General and administrative	18,790	18,469	37,140	36,559
Legal fees associated with indemnification obligations and other related costs, net	0	0	0	124
Amortization of intangible assets	14,737	15,023	29,730	31,213
Total operating expenses	285,313	282,412	560,663	560,891
Income from operations	51,769	46,197	121,188	88,601
Interest expense	(12,729)	(20,745)	(25,775)	(42,291)
Interest and other income (loss), net	(452)	16	(1,448)	359
Income before income tax benefit	38,588	25,468	93,965	46,669
Income tax benefit	(708)	(611)	(3,915)	(6,328)
Net income (loss)	$ 39,296	$ 26,079	$ 97,880	$ 52,997
Net income per share - basic (dollars per share)	$ 0.09	$ 0.06	$ 0.22	$ 0.11
Net income per share - diluted (dollars per share)	$ 0.08	$ 0.05	$ 0.21	$ 0.11
Shares used in per share calculation - basic	457,541	473,209	455,017	469,158
Shares used in per share calculation - diluted	476,848	501,511	472,793	496,338