Goodwill And Intangible Assets (Schedule Of Goodwill Activity By Reportable Segment) (Details) - USD ($) $ in Thousands		12 Months Ended
		Oct. 29, 2016		Oct. 31, 2015
Goodwill
Goodwill, Gross, Beginning Balance		$ 1,746,375		$ 1,696,937
Accumulated impairment losses, Beginning Balance		(129,214)		(129,214)
Goodwill, Net, Beginning Balance		1,617,161		1,567,723
Goodwill, Acquired During Period		678,357	[1]	49,458	[2]
Goodwill, Purchase Accounting Adjustments		0		(15)
Goodwill, Tax and other adjustments	[3]	(5)		(21)
Goodwill, Translation Adjustments		(329)		16
Goodwill, Gross, Ending Balance		2,424,398		1,746,375
Accumulated impairment losses, Ending Balance		(129,214)		(129,214)
Goodwill, Net, Ending Balance		2,295,184		1,617,161
SAN Products
Goodwill
Goodwill, Gross, Beginning Balance		176,325		176,346
Accumulated impairment losses, Beginning Balance		0		0
Goodwill, Net, Beginning Balance		176,325		176,346
Goodwill, Acquired During Period		0	[1]	0	[2]
Goodwill, Purchase Accounting Adjustments		0		0
Goodwill, Tax and other adjustments	[3]	(5)		(21)
Goodwill, Translation Adjustments		0		0
Goodwill, Gross, Ending Balance		176,320		176,325
Accumulated impairment losses, Ending Balance		0		0
Goodwill, Net, Ending Balance		176,320		176,325
IP Networking Products
Goodwill
Goodwill, Gross, Beginning Balance		1,414,634		1,365,175
Accumulated impairment losses, Beginning Balance		(129,214)		(129,214)
Goodwill, Net, Beginning Balance		1,285,420		1,235,961
Goodwill, Acquired During Period		284,336	[1]	49,458	[2]
Goodwill, Purchase Accounting Adjustments		0		(15)
Goodwill, Tax and other adjustments	[3]	0		0
Goodwill, Translation Adjustments		(329)		16
Goodwill, Gross, Ending Balance		1,698,641		1,414,634
Accumulated impairment losses, Ending Balance		(129,214)		(129,214)
Goodwill, Net, Ending Balance		1,569,427		1,285,420
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		394,021	[1]	0	[2]
Goodwill, Purchase Accounting Adjustments		0		0
Goodwill, Tax and other adjustments	[3]	0		0
Goodwill, Translation Adjustments		0		0
Goodwill, Gross, Ending Balance		549,437		155,416
Accumulated impairment losses, Ending Balance		0		0
Goodwill, Net, Ending Balance		$ 549,437		$ 155,416

[1] The goodwill acquired relates to the acquisitions completed in fiscal year 2016. See Note 3, “Acquisitions and Divestitures,” of the Notes to Consolidated Financial Statements.

[2] The goodwill acquired relates to the acquisitions completed in fiscal year 2015, which is gross of the adjustments recorded during the purchase price allocation period. See Note 3, “Acquisitions and Divestitures,” of the Notes to Consolidated Financial Statements.

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