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TRADE RECEIVABLES AND OTHER - Additional Information (Details) |  |  | 6 Months Ended |
--- | --- | --- | --- | ---
Dec. 09, 2019 USD ($) | Sep. 29, 2019 USD ($) | Jun. 30, 2020 EUR (€) | Jun. 30, 2019 EUR (€) | Dec. 31, 2019 EUR (€)
Disclosure of trade and other receivables [line items] |  |  |  |  |
Allowance recognized for impairment on trade receivables |  |  | € 400,000 | € 100,000 |
Factored assets |  |  | 506,000,000 |  | € 574,000,000
Factored assets, derecognized from Consolidated Statement of Financial Position |  |  | (390,000,000) |  | 463,000,000
Factored assets, recognized in Consolidated Statement of Financial Position |  |  | 116,000,000 |  | 111,000,000
Debt due factor |  |  | 6,839,649 |  | € 0
Factoring of receivables | Muscle Shoals factoring facility |  |  |  |  |
Disclosure of trade and other receivables [line items] |  |  |  |  |
Factoring maximum capacity | $ |  | $ 300,000,000 |  |  |
France | Factoring of receivables |  |  |  |  |
Disclosure of trade and other receivables [line items] |  |  |  |  |
Factoring maximum capacity |  |  | 255,000,000 |  |
Germany, Switzerland and Czech Republic | Factoring of receivables |  |  |  |  |
Disclosure of trade and other receivables [line items] |  |  |  |  |
Factoring maximum capacity |  |  | € 150,000,000 |  |
United States | Factoring of receivables | Constellium automotive |  |  |  |  |
Disclosure of trade and other receivables [line items] |  |  |  |  |
Factoring maximum capacity | $ | $ 25,000,000 |  |  |  |

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- Definition The amount of impairment loss or reversal of impairment loss recognised in profit or loss for trade receivables. [Refer: Impairment loss recognised in profit or loss; Reversal of impairment loss recognised in profit or loss; Trade receivables] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_112_c&doctype=Standard -URIDate 2019-03-27 + Details
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