Goodwill And Intangible Assets (Schedule Of Goodwill Activity By Reportable Segment) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Oct. 26, 2013		Oct. 27, 2012
Goodwill
Goodwill, Gross, Beginning Balance	$ 1,669,921		$ 1,676,799
Accumulated impairment losses, Beginning Balance	(45,832)		(45,832)
Goodwill, Net, Beginning Balance	1,624,089		1,630,967
Goodwill, Acquired During Period	25,681
Goodwill, Tax and other adjustments	(4,333)	[1]	(6,878)	[1]
Goodwill, Gross, Ending Balance	1,691,269		1,669,921
Accumulated impairment losses, Ending Balance	(45,832)		(45,832)
Goodwill, Net, Ending Balance	1,645,437		1,624,089
SAN Products
Goodwill
Goodwill, Gross, Beginning Balance	176,956		176,968
Accumulated impairment losses, Beginning Balance	0		0
Goodwill, Net, Beginning Balance	176,956		176,968
Goodwill, Acquired During Period	0
Goodwill, Tax and other adjustments	(78)	[1]	(12)	[1]
Goodwill, Gross, Ending Balance	176,878		176,956
Accumulated impairment losses, Ending Balance	0		0
Goodwill, Net, Ending Balance	176,878		176,956
IP Networking Products
Goodwill
Goodwill, Gross, Beginning Balance	1,337,549		1,344,415
Accumulated impairment losses, Beginning Balance	(45,832)		(45,832)
Goodwill, Net, Beginning Balance	1,291,717		1,298,583
Goodwill, Acquired During Period	25,681
Goodwill, Tax and other adjustments	(4,255)	[1]	(6,866)	[1]
Goodwill, Gross, Ending Balance	1,358,975		1,337,549
Accumulated impairment losses, Ending Balance	(45,832)		(45,832)
Goodwill, Net, Ending Balance	1,313,143		1,291,717
Global Services
Goodwill
Goodwill, Gross, Beginning Balance	155,416		155,416
Accumulated impairment losses, Beginning Balance	0		0
Goodwill, Net, Beginning Balance	155,416		155,416
Goodwill, Acquired During Period	0
Goodwill, Tax and other adjustments	0	[1]	0	[1]
Goodwill, Gross, Ending Balance	155,416		155,416
Accumulated impairment losses, Ending Balance	0		0
Goodwill, Net, Ending Balance	$ 155,416		$ 155,416

[1] The goodwill adjustments were primarily a result of tax benefits from the exercise of stock awards of acquired companies.