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Fair Value Measurements | 12 Months Ended
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Oct. 31, 2020
Fair Value Disclosures [Abstract] |
FAIR VALUE MEASUREMENTS | FAIR VALUE MEASUREMENTS As of the dates indicated, the following tables summarize the fair value of assets and liabilities that were recorded at fair value on a recurring basis (in thousands):
| October 31, 2020
| Level 1 |  | Level 2 |  | Level 3 |  | Total
Assets: |  |  |  |  |  |  |
Money market funds | $ | 889,293 |  |  | $ | — |  |  | $ | — |  |  | $ | 889,293 |
Bond mutual fund | 50,361 |  |  | — |  |  | — |  |  | 50,361 |
Deferred compensation plan assets | 8,213 |  |  | — |  |  | — |  |  | 8,213 |
U.S. government obligations | — |  |  | 232,893 |  |  | — |  |  | 232,893 |
Foreign currency forward contracts | — |  |  | 82 |  |  | — |  |  | 82 |
Total assets measured at fair value | $ | 947,867 |  |  | $ | 232,975 |  |  | $ | — |  |  | $ | 1,180,842 |
Liabilities: |  |  |  |  |  |  |
Foreign currency forward contracts | $ | — |  |  | $ | 681 |  |  | $ | — |  |  | $ | 681 |
Forward starting interest rate swaps | — |  |  | 28,513 |  |  | — |  |  | 28,513 |
Total liabilities measured at fair value | $ | — |  |  | $ | 29,194 |  |  | $ | — |  |  | $ | 29,194 |
| November 2, 2019
| Level 1 |  | Level 2 |  | Level 3 |  | Total
Assets: |  |  |  |  |  |  |
Money market funds | $ | 759,114 |  |  | $ | — |  |  | $ | — |  |  | $ | 759,114 |
Deferred compensation plan assets | 4,974 |  |  | — |  |  | — |  |  | 4,974 |
U.S. government obligations | — |  |  | 119,954 |  |  | — |  |  | 119,954 |
Foreign currency forward contracts | — |  |  | 1,570 |  |  | — |  |  | 1,570 |
Total assets measured at fair value | $ | 764,088 |  |  | $ | 121,524 |  |  | $ | — |  |  | $ | 885,612 |
Liabilities: |  |  |  |  |  |  |
Foreign currency forward contracts | $ | — |  |  | $ | 35 |  |  | $ | — |  |  | $ | 35 |
Forward starting interest rate swaps | — |  |  | 21,093 |  |  | — |  |  | 21,093 |
Contingent consideration | — |  |  | — |  |  | 3,705 |  |  | 3,705 |
Total liabilities measured at fair value | $ | — |  |  | $ | 21,128 |  |  | $ | 3,705 |  |  | $ | 24,833 |
As of the dates indicated, the assets and liabilities above were presented on Ciena’s Consolidated Balance Sheet as follows (in thousands):
| October 31, 2020
| Level 1 |  | Level 2 |  | Level 3 |  | Total
Assets: |  |  |  |  |  |  |
Cash equivalents | $ | 939,654 |  |  | $ | — |  |  | $ | — |  |  | $ | 939,654 |
Short-term investments | — |  |  | 150,667 |  |  | — |  |  | 150,667 |
Prepaid expenses and other | — |  |  | 82 |  |  | — |  |  | 82 |
Other long-term assets | 8,213 |  |  | 82,226 |  |  | — |  |  | 90,439 |
Total assets measured at fair value | $ | 947,867 |  |  | $ | 232,975 |  |  | $ | — |  |  | $ | 1,180,842 |
Liabilities: |  |  |  |  |  |  |
Accrued liabilities and other short-term obligations | $ | — |  |  | $ | 681 |  |  | $ | — |  |  | $ | 681 |
Other long-term obligations | — |  |  | 28,513 |  |  | — |  |  | 28,513 |
Total liabilities measured at fair value | $ | — |  |  | $ | 29,194 |  |  | $ | — |  |  | $ | 29,194 |
| November 2, 2019
| Level 1 |  | Level 2 |  | Level 3 |  | Total
Assets: |  |  |  |  |  |  |
Cash equivalents | $ | 759,114 |  |  | $ | — |  |  | $ | — |  |  | $ | 759,114 |
Short-term investments | — |  |  | 109,940 |  |  | — |  |  | 109,940 |
Prepaid expenses and other | — |  |  | 1,570 |  |  | — |  |  | 1,570 |
Long-term investments | — |  |  | 10,014 |  |  | — |  |  | 10,014 |
Other long-term assets | 4,974 |  |  | — |  |  | — |  |  | 4,974 |
Total assets measured at fair value | $ | 764,088 |  |  | $ | 121,524 |  |  | $ | — |  |  | $ | 885,612 |
Liabilities: |  |  |  |  |  |  |
Accrued liabilities and other short-term obligations | $ | — |  |  | $ | 35 |  |  | $ | — |  |  | $ | 35 |
Other long-term obligations | — |  |  | 21,093 |  |  | 3,705 |  |  | 24,798 |
Total liabilities measured at fair value | $ | — |  |  | $ | 21,128 |  |  | $ | 3,705 |  |  | $ | 24,833 |
Ciena did not have any transfers between Level 1 and Level 2 fair value measurements during the periods presented.As of October 31, 2020, none of Ciena’s existing liabilities were classified as Level 3. As of November 2, 2019, Ciena’s Level 3 liability included $3.7 million in accrued liabilities and other short-term obligations. This reflected a contingent consideration element of a three-year payout arrangement associated with Ciena’s purchase of DonRiver in the fourth quarter of fiscal 2018. During the third quarter of fiscal 2020, the total contingent consideration liability was recorded as a reduction to expense in acquisition and integration costs on the Consolidated Statements of Operations to reflect the fair value of the consideration using the income approach. No contingent consideration liability remains in Other long-term obligations on the Consolidated Balance Sheets as of October 31, 2020.

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- Definition The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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