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ABL Credit Facility
12 Months Ended
Oct. 31, 2019
Line of Credit Facility [Abstract]  
ABL CREDIT FACILITY ABL CREDIT FACILITY

Ciena Corporation and certain of its subsidiaries are parties to the ABL Credit Facility, which provides for a total commitment of $300 million with a maturity date of October 28, 2024. The ABL Credit Facility was entered into on October 28, 2019 and replaced a predecessor senior secured asset-based revolving credit facility. Ciena principally uses the ABL Credit Facility to support the issuance of letters of credit that arise in the ordinary course of its business and thereby to reduce its use of cash required to collateralize these instruments.
    As of October 31, 2019, letters of credit totaling $72.9 million were outstanding under the ABL Credit Facility. There were no borrowings outstanding under the ABL Credit Facility as of October 31, 2019.