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Derivative Instruments And Hedging Activities (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Nov. 01, 2014
Oct. 26, 2013
Oct. 27, 2012
Derivative Instruments and Hedging Activities Disclosure [Abstract]      
Maximum derivative instrument maturity period 15 months    
Foreign Currency Transaction [Abstract]      
Foreign currency transaction gains (losses) $ (0.3)us-gaap_ForeignCurrencyTransactionGainLossRealized $ 0.1us-gaap_ForeignCurrencyTransactionGainLossRealized $ (1.5)us-gaap_ForeignCurrencyTransactionGainLossRealized
Derivatives Designated As Hedging Instruments | Other Accrued Liabilities      
Derivative Instruments, Gain (Loss)      
Gross unrealized loss positions (1.9)us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= brcd_OtherAccruedLiabilitiesMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember		    
Derivatives Designated As Hedging Instruments | Prepaid Expense And Other Current Asset      
Derivative Instruments, Gain (Loss)      
Gross unrealized gain positions $ 0.1us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember