Commitments And Contingencies (Gain Contingency Narrative) (Details) (Details) (Positive Outcome of Litigation, A10 Networks, USD $) In Millions, unless otherwise specified	6 Months Ended
	Apr. 27, 2013	Oct. 29, 2010 patents
Positive Outcome of Litigation | 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 awarded damages to Brocade. 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 the Court ordered a new trial to redetermine the amount of any such damages. On January 11, 2013, the Court also issued a permanent injunction prohibiting A10 from shipping any A10 products that infringe Brocade’s patents. On January 23, 2013, the Court issued a permanent injunction prohibiting A10 from further use of the misappropriated trade secrets. On February 8, 2013, A10 filed a Notice of Appeal of the permanent injunctions. A10 also asked the Court to stay both of the injunctions pending appeal. On February 12, 2013, the Court denied A10’s request to stay the injunctions. Both of the Court-ordered permanent injunctions against A10 are in effect and, among other restrictions imposed by the Court, prohibit A10 from shipping any of its infringing products. A retrial on the sole issue of the amount of patent damages to be awarded to Brocade for A10’s infringement was set for May 20, 2013. On May 20, 2013, before the start of the retrial, Brocade and A10 reached an agreement to settle all matters between the parties including the lawsuit A10 filed against Brocade on September 9, 2011 (as further described in Note 16, “Subsequent Event”).