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Foreign Currency Forward Contracts
9 Months Ended
Jul. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
FOREIGN CURRENCY FORWARD CONTRACTS
FOREIGN CURRENCY FORWARD CONTRACTS

As of July 31, 2014, Ciena had forward contracts to reduce the variability in its Canadian Dollar and Indian Rupee denominated expense, which expense principally relates to research and development activities. These derivative contracts have been designated as cash flow hedges. During the first nine months of fiscal 2014, in order to hedge certain balance sheet exposures, Ciena entered into forward contracts to sell Brazilian Real and buy an equivalent U.S. Dollar amount and forward contracts to sell U.S. Dollars and buy an equivalent amount of Canadian Dollars. These derivative contracts have not been designated as hedges. Ciena's foreign currency forward contracts are immaterial for separate financial statement presentation.