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DERIVATIVE INSTRUMENTS
 9 Months Ended
Aug. 02, 2025
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
DERIVATIVE INSTRUMENTS DERIVATIVE INSTRUMENTS
Foreign Currency Derivatives 

Ciena conducts business globally in many currencies, and thus is exposed to foreign currency exchange rate changes. To limit this exposure, Ciena enters into foreign currency contracts. Ciena does not enter into such contracts for speculative purposes.

As of August 2, 2025 and November 2, 2024, Ciena had forward contracts to hedge its foreign exchange exposure in order to reduce variability in certain currencies for expenses principally related to research and development activities. The notional amount of these contracts was approximately $325.3 million and $257.0 million as of August 2, 2025 and November 2, 2024, respectively. These foreign exchange contracts have maturities of 24 months or less and have been designated as cash flow hedges.

As of August 2, 2025 and November 2, 2024, Ciena had forward contracts designated as net investment hedges to minimize the effect of foreign exchange rate movements on its net investments in foreign operations. The notional amount of these contracts was approximately $63.0 million and $65.4 million as of August 2, 2025 and November 2, 2024, respectively. These foreign exchange contracts have maturities of 36 months or less and have been designated as net investment hedges.
As of August 2, 2025 and November 2, 2024, Ciena had forward contracts in place to hedge its foreign exchange exposure in order to reduce the variability in various currencies of certain balance sheet items. The notional amount of these contracts was approximately $138.5 million and $201.2 million as of August 2, 2025 and November 2, 2024, respectively. These foreign exchange contracts have maturities of 12 months or less and have not been designated as hedges for accounting purposes.

Interest Rate Derivatives

Ciena is exposed to floating rates of interest on its term loan borrowings (see Note 12 below) and has hedged such risk by entering into floating-to-fixed interest rate swap arrangements (“interest rate swaps”).

In April 2022, Ciena entered into forward starting interest rate swaps to fix the Secured Overnight Financing Rate (“SOFR”) for the first $350.0 million of its floating rate debt at 2.968% from September 2023 through September 2025 (“2025 interest rate swaps”). The total notional amount of the 2025 interest rate swaps was $350.0 million as of August 2, 2025 and November 2, 2024.

In January 2023, Ciena entered into interest rate swaps to fix SOFR for an additional $350.0 million of its floating rate debt at 3.47% through January 2028. The total notional amount of these interest rate swaps was $350.0 million as of August 2, 2025 and November 2, 2024.

In December 2023, Ciena entered into forward starting interest rate swaps to fix SOFR for an additional $350.0 million of its floating rate debt at 3.287% from September 2025 through December 2028 (“2028 forward starting interest rate swaps”). The total notional amount of the 2028 forward starting interest rate swaps effective September 2025 was $350.0 million as of August 2, 2025 and November 2, 2024.

Ciena expects the variable rate payments to be received under the terms of these interest rate swaps to offset exactly the forecasted variable rate payments on the equivalent notional amount of the Refinanced 2030 Term Loan (as defined in Note 12 below). These derivative contracts have been designated as cash flow hedges.

Other information regarding Ciena’s derivatives is immaterial for separate financial statement presentation. See Note 5 and Note 8 above.