Commitments And Contingencies (Gain Contingency Narrative) (Details) (Details) (A10 Networks, USD $) In Millions, unless otherwise specified	3 Months Ended
	Jan. 26, 2013	Oct. 29, 2010 patents
A10 Networks
Gain Contingencies
Number of alleged patents infringed and seeking injunctive relief		13
Gain Contingency, Unrecorded Amount	$ 60
Gain Contingency, Description	On August 6, 2012, the jury found A10 responsible for intellectual property infringement and unfair competition, and awarding damages to Brocade. On November 8, 2012 the Court heard argument on the parties’ post-trial motions. On January 11, 2013, the Court issued an order that affirmed the jury’s finding of A10’s liability for patent and copyright infringement, trade secret misappropriation, and unfair competition due to A10’s interference with the employment contract of a Foundry Networks employee beginning in 2007. The Court also confirmed the jury’s award of $60 million to Brocade in damages for copyright infringement. The Court did, however, vacate the jury’s award of damages for patent infringement, and its award of punitive damages for A10’s and Lee Chen’s interference with the employment contract of the Foundry employee, and ordered a new trial to re-determine the amounts of any such damages. No trial date has been set.