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Document And Entity Information
3 Months Ended
Jan. 25, 2014
Feb. 21, 2014
Entity Information [Line Items]    
Entity Registrant Name BROCADE COMMUNICATIONS SYSTEMS INC  
Entity Central Index Key 0001009626  
Current Fiscal Year End Date --11-01  
Entity Filer Category Large Accelerated Filer  
Document Type 10-Q  
Document Period End Date Jan. 25, 2014  
Document Fiscal Year Focus 2014  
Document Fiscal Period Focus Q1  
Amendment Flag false  
Entity Common Stock, Shares Outstanding   435,208,026