Goodwill And Intangible Assets (Schedule Of Goodwill Activity By Reportable Segment) (Details) $ in Thousands		9 Months Ended
		Aug. 01, 2015 USD ($)
Goodwill
Goodwill, Gross, Beginning Balance		$ 1,696,937
Accumulated impairment losses, Beginning Balance		(129,214)
Goodwill, Net, Beginning Balance		1,567,723
Goodwill, Acquired	[1]	49,458
Goodwill, Tax and other adjustments	[2]	(20)
Goodwill, Translation Adjustments		37
Goodwill, Gross, Ending Balance		1,746,350
Accumulated impairment losses, Ending Balance		(129,214)
Goodwill, Net, Ending Balance		1,617,136
SAN Products
Goodwill
Goodwill, Gross, Beginning Balance		176,346
Accumulated impairment losses, Beginning Balance		0
Goodwill, Net, Beginning Balance		176,346
Goodwill, Acquired	[1]	0
Goodwill, Tax and other adjustments	[2]	(20)
Goodwill, Translation Adjustments		0
Goodwill, Purchase Accounting Adjustments		0
Goodwill, Gross, Ending Balance		176,326
Accumulated impairment losses, Ending Balance		0
Goodwill, Net, Ending Balance		176,326
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	[1]	49,458
Goodwill, Tax and other adjustments	[2]	0
Goodwill, Translation Adjustments		37
Goodwill, Purchase Accounting Adjustments		(62)
Goodwill, Gross, Ending Balance		1,414,608
Accumulated impairment losses, Ending Balance		(129,214)
Goodwill, Net, Ending Balance		1,285,394
Global Services
Goodwill
Goodwill, Gross, Beginning Balance		155,416
Accumulated impairment losses, Beginning Balance		0
Goodwill, Net, Beginning Balance		155,416
Goodwill, Acquired	[1]	0
Goodwill, Tax and other adjustments	[2]	0
Goodwill, Translation Adjustments		0
Goodwill, Purchase Accounting Adjustments		0
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, which is gross of the adjustments recorded during the purchase price allocation period. See Note 3, “Acquisitions and Divestitures,” of the Notes to Condensed Consolidated Financial Statements.

[2] The goodwill adjustments during the nine months ended August 1, 2015, were primarily a result of tax benefits from the exercise of stock awards of acquired companies.