Goodwill And Intangible Assets (Schedule Of Goodwill Activity By Reportable Segment) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	May 02, 2015
Goodwill
Goodwill, Gross, Beginning Balance	$ 1,696,937
Accumulated impairment losses, Beginning Balance	(129,214)
Goodwill, Net, Beginning Balance	1,567,723
Goodwill, Acquired	49,458	[1]
Goodwill, Tax and other adjustments	(10)	[2]
Goodwill, Gross, Ending Balance	1,746,385
Accumulated impairment losses, Ending Balance	(129,214)
Goodwill, Net, Ending Balance	1,617,171
SAN Products
Goodwill
Goodwill, Gross, Beginning Balance	176,346
Accumulated impairment losses, Beginning Balance	0
Goodwill, Net, Beginning Balance	176,346
Goodwill, Acquired	0	[1]
Goodwill, Tax and other adjustments	(10)	[2]
Goodwill, Gross, Ending Balance	176,336
Accumulated impairment losses, Ending Balance	0
Goodwill, Net, Ending Balance	176,336
Internet Protocol (“IP”) Networking Products
Goodwill
Goodwill, Gross, Beginning Balance	1,365,175
Accumulated impairment losses, Beginning Balance	(129,214)
Goodwill, Net, Beginning Balance	1,235,961
Goodwill, Acquired	49,458	[1]
Goodwill, Tax and other adjustments	0	[2]
Goodwill, Gross, Ending Balance	1,414,633
Accumulated impairment losses, Ending Balance	(129,214)
Goodwill, Net, Ending Balance	1,285,419
Global Services
Goodwill
Goodwill, Gross, Beginning Balance	155,416
Accumulated impairment losses, Beginning Balance	0
Goodwill, Net, Beginning Balance	155,416
Goodwill, Acquired	0	[1]
Goodwill, Tax and other adjustments	0	[2]
Goodwill, Gross, Ending Balance	155,416
Accumulated impairment losses, Ending Balance	0
Goodwill, Net, Ending Balance	$ 155,416

[1] The goodwill acquired relates to the Company’s acquisition of two businesses. See Note 3, “Acquisitions and Divestitures,” of the Notes to Condensed Consolidated Financial Statements.

[2] The goodwill adjustments during the six months ended May 2, 2015, were primarily a result of tax benefits from the exercise of stock awards of acquired companies.