Goodwill And Intangible Assets (Schedule Of Goodwill Activity By Reportable Segment) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Apr. 28, 2012
Goodwill [Roll Forward]
Goodwill, Gross, Beginning Balance	$ 1,676,799
Accumulated impairment losses, Beginning Balance	(45,832)
Goodwill, Net, Beginning Balance	1,630,967
Goodwill, Tax and other adjustments	(5,036)	[1]
Goodwill, Gross, Ending Balance	1,671,763
Accumulated impairment losses, Ending Balance	(45,832)
Goodwill, Net, Ending Balance	1,625,931
Data Storage products
Goodwill [Roll Forward]
Goodwill, Gross, Beginning Balance	176,968
Accumulated impairment losses, Beginning Balance	0
Goodwill, Net, Beginning Balance	176,968
Goodwill, Tax and other adjustments	(8)	[1]
Goodwill, Gross, Ending Balance	176,960
Accumulated impairment losses, Ending Balance	0
Goodwill, Net, Ending Balance	176,960
Ethernet products
Goodwill [Roll Forward]
Goodwill, Gross, Beginning Balance	1,344,415
Accumulated impairment losses, Beginning Balance	(45,832)
Goodwill, Net, Beginning Balance	1,298,583
Goodwill, Tax and other adjustments	(5,028)	[1]
Goodwill, Gross, Ending Balance	1,339,387
Accumulated impairment losses, Ending Balance	(45,832)
Goodwill, Net, Ending Balance	1,293,555
Global Services
Goodwill [Roll Forward]
Goodwill, Gross, Beginning Balance	155,416
Accumulated impairment losses, Beginning Balance	0
Goodwill, Net, Beginning Balance	155,416
Goodwill, Tax and other adjustments	0	[1]
Goodwill, Gross, Ending Balance	155,416
Accumulated impairment losses, Ending Balance	0
Goodwill, Net, Ending Balance	$ 155,416

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