Basis Of Presentation (Policies)	9 Months Ended
Basis Of Presentation (Policies)	Aug. 01, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Fiscal Period Policy	The Company’s fiscal year is a 52- or 53-week period ending on the last Saturday in October or the first Saturday in November, respectively. Fiscal year 2015 is a 52-week fiscal year and fiscal year 2014 was a 53-week fiscal year. The second quarter of fiscal year 2014 was a 14-week quarter, which was one week longer than a typical quarter.
Consolidation Policy	The Condensed Consolidated Financial Statements include the accounts of Brocade and its wholly owned subsidiaries. All significant intercompany accounts and transactions have been eliminated.
Use of Estimates in Preparation of Condensed Consolidated Financial Statements	Use of Estimates in Preparation of Condensed Consolidated Financial Statements The preparation of condensed consolidated financial statements and related disclosures in conformity with U.S. GAAP requires management to make estimates and judgments that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. Estimates are used for, but not limited to, revenue recognition, sales allowances and programs, allowance for doubtful accounts, stock-based compensation, purchase price allocations, warranty obligations, inventory valuation and purchase commitments, restructuring costs, incentive compensation, facilities lease losses, impairment of goodwill and intangible assets, litigation, and income taxes. Actual results may differ materially from these estimates.

Disclosure of accounting policy for determining an entity's fiscal year or other fiscal period. This disclosure may include identification of the fiscal period end-date, the length of the fiscal period, any reporting period lag between the entity and its subsidiaries, or equity investees. If a reporting lag exists, the closing date of the entity having a different period end is generally noted, along with an explanation of the necessity for using different closing dates. Any intervening events that materially affect the entity's financial position or results of operations are generally also disclosed.