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Interim Financial Statements | 9 Months Ended
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Aug. 01, 2020
Quarterly Financial Data [Abstract] |
Interim Financial Statements | INTERIM FINANCIAL STATEMENTS The interim financial statements included herein for Ciena Corporation and its wholly owned subsidiaries (“Ciena”) have been prepared by Ciena, without audit, pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (the “SEC”). The preparation of financial statements and related disclosures in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires Ciena to make judgments, assumptions, and estimates that affect the amounts reported in the Condensed Consolidated Financial Statements and accompanying notes. The inputs into certain of Ciena’s judgments, assumptions and estimates reflected the information available to Ciena regarding the economic implications of the COVID-19 pandemic, and expectations as to its impact on Ciena’s business. The actual results that Ciena experiences may differ materially from such inputs into Ciena’s critical and significant accounting estimates. As the duration and severity of the COVID-19 pandemic are unclear, certain of such estimates could require further judgment or modification and therefore carry a higher degree of variability and volatility as compared to prior periods. As events continue to evolve, Ciena’s estimates may change materially in future periods. In the opinion of management, the financial statements included in this report reflect all normal recurring adjustments that Ciena considers necessary for the fair statement of the results of operations of Ciena for the interim periods covered and of the financial position of Ciena at the date of the interim balance sheets. Certain information and footnote disclosures normally included in the annual financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to SEC rules and regulations. The Condensed Consolidated Balance Sheet as of November 2, 2019 was derived from audited financial statements, but does not include all disclosures required by GAAP. However, Ciena believes that the disclosures are adequate to understand the information presented herein. The operating results for interim periods are not necessarily indicative of the operating results for the entire year. These financial statements should be read in conjunction with Ciena’s audited consolidated financial statements and the notes thereto included in Ciena’s annual report on Form 10-K for fiscal 2019 (the “2019 Annual Report”). Ciena has a 52 or 53-week fiscal year, with quarters ending on the Saturday nearest to the last day of January, April, July and October, respectively, of each year. Fiscal 2020 and 2019 are 52-week fiscal years. Effective the second quarter of fiscal 2020, Ciena changed the presentation of reporting for its financial statements and notes thereto to reflect the actual dates on which fiscal years and quarterly periods ended. Because these dates can change from period to period, for consistency purposes, Ciena previously presented such information indicating that its quarters ended on January 31, April 30, July 31 and October 31. This change, affecting only the presentation of such information, was made on a prospective basis and it does not impact comparability of previous financial results. References to prior reported periods have been changed to reflect the actual period end dates of August 1, 2020, August 3, 2019, November 2, 2019 and November 3, 2018 for periods reported herein.

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