XML 488 R59.htm IDEA: XBRL DOCUMENT
v3.20.4

FINANCIAL INSTRUMENTS (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2020
Disclosure of detailed information about financial instruments [abstract] |
Schedule of Financial Assets and Liabilities by Categories |
|  |  |  | At December 31,
|  |  |  | 2020 |  | 2019
(in millions of Euros) |  | Notes |  | At amortized cost |  | At Fair Value through Profit and loss |  | At Fair Value through OCI |  | Total |  | At amortized cost |  | At Fair Value through Profit and loss |  | At Fair Value through OCI |  | Total
Cash and cash equivalents |  | 13 |  | 439 |  |  | — |  |  | — |  |  | 439 |  |  | 184 |  |  | — |  |  | — |  |  | 184 |
Trade receivables |  | 14 |  | — |  |  | — |  |  | 341 |  |  | 341 |  |  | — |  |  | — |  |  | 393 |  |  | 393 |
Other financial assets |  |  |  | 3 |  |  | 40 |  |  | 14 |  |  | 57 |  |  | — |  |  | 29 |  |  | — |  |  | 29 |
Total |  |  |  | 442 |  |  | 40 |  |  | 355 |  |  | 837 |  |  | 184 |  |  | 29 |  |  | 393 |  |  | 606 |
|  |  |  | At December 31,
|  |  |  | 2020 |  | 2019
(in millions of Euros) |  | Notes |  | At amortized cost |  | At Fair Value through Profit and loss |  | At Fair Value through OCI |  | Total |  | At amortized cost |  | At Fair Value through Profit and loss |  | At Fair Value through OCI |  | Total
Trade payables and fixed assets payables |  | 19 |  | 653 |  |  | — |  |  | — |  |  | 653 |  |  | 754 |  |  | — |  |  | — |  |  | 754 |
Borrowings |  | 20 |  | 2,391 |  |  | — |  |  | — |  |  | 2,391 |  |  | 2,361 |  |  | — |  |  | — |  |  | 2,361 |
Other financial liabilities |  |  |  | — |  |  | 85 |  |  | 2 |  |  | 87 |  |  | — |  |  | 44 |  |  | 14 |  |  | 58 |
Total |  |  |  | 3,044 |  |  | 85 |  |  | 2 |  |  | 3,131 |  |  | 3,115 |  |  | 44 |  |  | 14 |  |  | 3,173 |
Schedule of Other Financial Assets and Other Financial Liabilities Positions |
|  | At December 31,
|  | 2020 |  | 2019
(in millions of Euros) |  | Non-current |  | Current |  | Total |  | Non-current |  | Current |  | Total
Aluminium and premium future contracts |  | 1 |  |  | 18 |  |  | 19 |  |  | 1 |  |  | 8 |  |  | 9 |
Other future contracts |  | 1 |  |  | 1 |  |  | 2 |  |  | — |  |  | — |  |  | — |
Currency commercial contracts |  | 16 |  |  | 17 |  |  | 33 |  |  | 5 |  |  | 12 |  |  | 17 |
Currency net debt derivatives |  | — |  |  | — |  |  | — |  |  | 1 |  |  | 2 |  |  | 3 |
Margin call (A) |  | — |  |  | 3 |  |  | 3 |  |  | — |  |  | — |  |  | — |
Other financial assets - derivatives |  | 18 |  |  | 39 |  |  | 57 |  |  | 7 |  |  | 22 |  |  | 29 |
Aluminium and premium future contracts |  | 3 |  |  | 6 |  |  | 9 |  |  | 4 |  |  | 10 |  |  | 14 |
Energy future contracts |  | — |  |  | — |  |  | — |  |  | — |  |  | 1 |  |  | 1 |
Other future contracts |  | — |  |  | 1 |  |  | 1 |  |  | 2 |  |  | 4 |  |  | 6 |
Currency commercial contracts |  | 4 |  |  | 28 |  |  | 32 |  |  | 12 |  |  | 16 |  |  | 28 |
Currency net debt derivatives |  | 34 |  |  | 11 |  |  | 45 |  |  | 5 |  |  | 4 |  |  | 9 |
Other financial liabilities - derivatives |  | 41 |  |  | 46 |  |  | 87 |  |  | 23 |  |  | 35 |  |  | 58 |
(A) At December 31, 2020, the €3 million margin call asset position was related to foreign currency derivatives.
Schedule of Derivatives Measured at Fair Value |
|  | At December 31,
|  | 2020 |  | 2019
(in millions of Euros) |  | Level 1 |  | Level 2 |  | Level 3 |  | Total |  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Other financial assets - derivatives |  | 20 |  |  | 37 |  |  | — |  |  | 57 |  |  | 8 |  |  | 21 |  |  | — |  |  | 29 |
Other financial liabilities - derivatives |  | 9 |  |  | 78 |  |  | — |  |  | 87 |  |  | 19 |  |  | 39 |  |  | — |  |  | 58 |

X
- Definition The entire disclosure of financial derivative instrument assets and liabilities. + References No definition available. + Details
Name: | cstm_DisclosureOfFinancialDerivativeInstrumentAssetsAndLiabilitiesTableTextBlock
Namespace Prefix: | cstm_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition The disclosure of the fair value measurement of assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2020-01-01 -Paragraph 93 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2020-en-r&anchor=para_93&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_DisclosureOfFairValueMeasurementOfAssetsExplanatory
Namespace Prefix: | ifrs-full_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | ifrs-full_DisclosureOfFinancialInstrumentsAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The disclosure of financial instruments measured at fair value through profit or loss. [Refer: At fair value [member]; Financial instruments, class [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 10 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_10_e&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_DisclosureOfFinancialInstrumentsAtFairValueThroughProfitOrLossExplanatory
Namespace Prefix: | ifrs-full_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration