Goodwill And Intangible Assets (Schedule Of Goodwill Activity By Reportable Segment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jan. 28, 2012		Oct. 29, 2011
Goodwill [Line Items]
Goodwill	$ 1,674,376		$ 1,676,799
Accumulated impairment losses	(45,832)		(45,832)
Tax and other adjustments	(2,423)	[1]
Goodwill, net	1,628,544		1,630,967
Data Storage Products [Member]
Goodwill [Line Items]
Goodwill	176,966		176,968
Tax and other adjustments	(2)	[1]
Goodwill, net	176,966		176,968
Ethernet Products [Member]
Goodwill [Line Items]
Goodwill	1,341,994		1,344,415
Accumulated impairment losses	(45,832)		(45,832)
Tax and other adjustments	(2,421)	[1]
Goodwill, net	1,296,162		1,298,583
Global Services [Member]
Goodwill [Line Items]
Goodwill	155,416		155,416
Goodwill, net	$ 155,416		$ 155,416

[1] The goodwill adjustments during the three months ended January 28, 2012 were primarily a result of tax benefits from the exercise of stock awards of acquired companies.