Condensed Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Jan. 28, 2012	Jan. 29, 2011
Net revenues
Product	$ 476,302	$ 457,029
Service	84,340	88,727
Total net revenues	560,642	545,756
Cost of revenues
Product	175,407	177,616
Service	40,466	47,257
Total cost of revenues	215,873	224,873
Gross margin	344,769	320,883
Operating expenses:
Research and development	89,319	91,408
Sales and marketing	152,688	152,667
General and administrative	18,350	18,090
Legal fees associated with indemnification obligations and other related costs, net		124
Amortization of intangible assets	14,993	16,190
Total operating expenses	275,350	278,479
Income from operations	69,419	42,404
Interest expense	(13,046)	(21,546)
Interest and other income (loss), net	(996)	343
Income before income tax benefit	55,377	21,201
Income tax benefit	(3,207)	(5,717)
Net income	$ 58,584	$ 26,918
Net income per share - basic	$ 0.13	$ 0.06
Net income per share - diluted	$ 0.12	$ 0.05
Shares used in per share calculation - basic	452,494	465,108
Shares used in per share calculation - diluted	468,738	491,166