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Interest and Other Income (Loss), Net | 12 Months Ended
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Oct. 31, 2020
Other Income and Expenses [Abstract] |
INTEREST AND OTHER INCOME (LOSS), NET | INTEREST AND OTHER INCOME (LOSS), NET The components of interest and other income (loss), net, were as follows (in thousands):
|  | Year Ended
|  | October 31, 2020 |  | November 2, 2019 |  | November 3, 2018
Interest income |  | $ | 6,860 |  |  | $ | 14,410 |  |  | $ | 13,703 |
Gain on non-hedge designated foreign currency forward contracts |  | 5,551 |  |  | 3 |  |  | 6,791 |
Foreign currency exchange losses |  | (13,022) |  |  | (9,800) |  |  | (19,434) |
Loss on fair value of debt conversion liability |  | — |  |  | — |  |  | (12,070) |
Other |  | 1,575 |  |  | (737) |  |  | (1,019) |
Interest and other income (loss), net |  | $ | 964 |  |  | $ | 3,876 |  |  | $ | (12,029) |
Ciena Corporation, as the U.S. parent entity, uses the U.S. Dollar as its functional currency; however, some of its foreign branch offices and subsidiaries use the local currency as their functional currency. During fiscal 2020, 2019 and 2018, Ciena recorded $13.0 million, $9.8 million and $19.4 million, respectively, in exchange rate losses, as a result of monetary assets and liabilities that were transacted in a currency other than the entity’s functional currency, and the related remeasurement adjustments were recorded in interest and other income (loss), net. From time to time, Ciena uses foreign currency forwards to hedge these balance sheet exposures. These forwards are not designated as hedges for accounting purposes, and any net gain or loss associated with these derivatives is also reported in interest and other income (loss), net. During fiscal 2019, Ciena recorded minimal gains from non-hedge designated foreign currency forward contracts. For fiscal 2020 and fiscal 2018, Ciena recorded gains of $5.6 million and $6.8 million, respectively, from non-hedge designated foreign currency forward contracts.

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- Definition The entire disclosure for the components of non-operating income or non-operating expense, including, but not limited to, amounts earned from dividends, interest on securities, gain (loss) on securities sold, equity earnings of unconsolidated affiliates, gain (loss) on sales of business, interest expense and other miscellaneous income or expense items. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(7)) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(9)) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 + Details
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