Commitments And Contingencies (Loss Contingency Narrative) (Details)	12 Months Ended			12 Months Ended
	Oct. 27, 2012 Enterasys [Member] patents	Aug. 28, 2007 Enterasys [Member] patents	Jun. 21, 2005 Enterasys [Member] patents	Oct. 27, 2012 A10 Networks [Member] patents	Sep. 09, 2011 A10 Networks [Member] patents
Loss Contingencies [Line Items]
Number of alleged patents infringed and seeking injunctive relief			6		2
Number of patents filed for reexamination		5
Number of patent claims determined invalid and received final rejections		2
Number of patents dropped from the litigation, previously appealed				1
Number of patents remaining at issue in the litigation	4			1