Goodwill And Intangible Assets (Schedule Of Goodwill Activity By Reportable Segment) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Oct. 27, 2012		Oct. 29, 2011
Goodwill [Roll Forward]
Goodwill, Gross, Beginning Balance	$ 1,676,799		$ 1,690,782
Accumulated impairment losses, Beginning Balance	(45,832)		(45,832)
Goodwill, Net, Beginning Balance	1,630,967		1,644,950
Goodwill, Disposed			(1,673)	[1]
Goodwill, Tax and other adjustments	(6,878)	[2]	(12,310)	[2]
Goodwill, Gross, Ending Balance	1,669,921		1,676,799
Accumulated impairment losses, Ending Balance	(45,832)		(45,832)
Goodwill, Net, Ending Balance	1,624,089		1,630,967
SAN Products
Goodwill [Roll Forward]
Goodwill, Gross, Beginning Balance	176,968		176,989
Accumulated impairment losses, Beginning Balance	0		0
Goodwill, Net, Beginning Balance	176,968		176,989
Goodwill, Disposed			0	[1]
Goodwill, Tax and other adjustments	(12)	[2]	(21)	[2]
Goodwill, Gross, Ending Balance	176,956		176,968
Accumulated impairment losses, Ending Balance	0		0
Goodwill, Net, Ending Balance	176,956		176,968
IP Networking Products
Goodwill [Roll Forward]
Goodwill, Gross, Beginning Balance	1,344,415		1,356,704
Accumulated impairment losses, Beginning Balance	(45,832)		(45,832)
Goodwill, Net, Beginning Balance	1,298,583		1,310,872
Goodwill, Disposed			0	[1]
Goodwill, Tax and other adjustments	(6,866)	[2]	(12,289)	[2]
Goodwill, Gross, Ending Balance	1,337,549		1,344,415
Accumulated impairment losses, Ending Balance	(45,832)		(45,832)
Goodwill, Net, Ending Balance	1,291,717		1,298,583
Global Services
Goodwill [Roll Forward]
Goodwill, Gross, Beginning Balance	155,416		157,089
Accumulated impairment losses, Beginning Balance	0		0
Goodwill, Net, Beginning Balance	155,416		157,089
Goodwill, Disposed			(1,673)	[1]
Goodwill, Tax and other adjustments	0	[2]	0	[2]
Goodwill, Gross, Ending Balance	155,416		155,416
Accumulated impairment losses, Ending Balance	0		0
Goodwill, Net, Ending Balance	$ 155,416		$ 155,416

[1] Goodwill disposed relates to sale of Strategic Business Systems, Inc. (“SBS”), a wholly owned subsidiary, see Note 17, “Loss on Sale of Subsidiary,” of the Notes to Consolidated Financial Statements.

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