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OTHER GAINS AND LOSSES—NET (Details) - EUR (€) € in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jul. 31, 2018 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Analysis of income and expense [abstract] |  |  |  |
Realized (losses) / gains on derivatives |  | € (35) | € (49) | € 14
Losses reclassified from OCI as a result of hedge accounting discontinuation |  | (6) | 0 | 0
Unrealized gains / (losses) on derivatives at fair value through profit and loss—net |  | 16 | 33 | (84)
Unrealized exchange gains from the remeasurement of monetary assets and liabilities - net |  | 1 | 0 | 0
Impairment of assets |  | (43) | 0 | 0
Restructuring costs |  | (13) | (4) | (1)
(Losses) / gains on pension plan amendments |  | (2) | 1 | 36
(Losses) / gains on disposals |  | (4) | (3) | 186
Other |  | (3) | (1) | 2
Other gains and losses - net |  | (89) | (23) | 153
Analysis of income and expense [line items] |  |  |  |
Impairment of assets |  | (43) | € 0 | 0
COVID-19 |  |  |  |
Analysis of income and expense [abstract] |  |  |  |
Losses reclassified from OCI as a result of hedge accounting discontinuation |  | (6) |  |
A&T and AC&I | COVID-19 |  |  |  |
Analysis of income and expense [abstract] |  |  |  |
Impairment of assets |  | (43) |  |
Analysis of income and expense [line items] |  |  |  |
Impairment of assets |  | € (43) |  |
Novelis |  |  |  |
Analysis of income and expense [line items] |  |  |  |
Sale of assets | € 200 |  |  |
Net gain on sale of assets |  |  |  | € 190

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- Definition Gains (losses) on pension plan amendments. + References No definition available. + Details
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- Definition The amount of expense relating to restructuring. Restructuring is a programme that is planned and controlled by management and materially changes either the scope of a business undertaken by an entity or the manner in which that business is conducted. Such programmes include: (a) the sale or termination of a line of business; (b) closure of business locations in a country or region or the relocation of activities from one country or region to another; (c) changes in management structure; and (d) fundamental reorganisations that have a material effect on the nature and focus of the entity's operations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 98 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_98_b&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The gain (loss) recognised in profit or loss on hedge ineffectiveness. [Refer: Gain (loss) on hedge ineffectiveness] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2020-01-01 -Paragraph 24C -Subparagraph a -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2020-en-r&anchor=para_24C_a_i&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2020-01-01 -Paragraph 24C -Subparagraph b -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2020-en-r&anchor=para_24C_b_ii&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The cash inflow from the disposal of property, plant and equipment, intangible assets other than goodwill, investment property and other non-current assets. [Refer: Intangible assets other than goodwill; Investment property; Other non-current assets; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 7 -IssueDate 2020-01-01 -Paragraph 16 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2020-en-r&anchor=para_16&doctype=Standard -URIDate 2020-01-01 + Details
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