XML 538 R127.htm IDEA: XBRL DOCUMENT
v3.22.0.1

FINANCIAL RISK MANAGEMENT - Undiscounted Contractual Financial Assets and Financial Liabilities Values by Relevant Maturity Groupings (Details) - EUR (€) € in Millions | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Leases | € 183 | € 195
Less than 1 year |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Financial assets | 60 | 33
Financial liabilities | 1,637 | 1,031
Leases | 37 | 41
Less than 1 year | Borrowings |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Financial liabilities | 195 | 10
Less than 1 year | Interest |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Financial liabilities | 79 | 114
Less than 1 year | Net debt derivatives |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Financial liabilities | 0 | 10
Less than 1 year | Net cash flows from derivative liabilities related to currencies and commodities |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Financial liabilities | 26 | 32
Less than 1 year | Trade payables and other (excluding contract liabilities) |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Financial liabilities | 1,300 | 824
Less than 1 year | Net debt derivatives |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Financial assets | 0 | 0
Less than 1 year | Net cash flows from derivative assets related to currencies and commodities |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Financial assets | 60 | 33
Between 1- 5 years |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Financial assets | 12 | 13
Financial liabilities | 1,134 | 1,663
Leases | 99 | 110
Between 1- 5 years | Borrowings |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Financial liabilities | 710 | 1,089
Between 1- 5 years | Interest |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Financial liabilities | 285 | 398
Between 1- 5 years | Net debt derivatives |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Financial liabilities | 0 | 30
Between 1- 5 years | Net cash flows from derivative liabilities related to currencies and commodities |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Financial liabilities | 12 | 7
Between 1- 5 years | Trade payables and other (excluding contract liabilities) |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Financial liabilities | 28 | 29
Between 1- 5 years | Net debt derivatives |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Financial assets | 0 | 0
Between 1- 5 years | Net cash flows from derivative assets related to currencies and commodities |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Financial assets | 12 | 13
Over 5 years |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Financial assets | 0 | 0
Financial liabilities | 1,227 | 1,247
Leases | 85 | 94
Over 5 years | Borrowings |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Financial liabilities | 1,046 | 1,093
Over 5 years | Interest |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Financial liabilities | 96 | 60
Over 5 years | Net debt derivatives |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Financial liabilities | 0 | 0
Over 5 years | Net cash flows from derivative liabilities related to currencies and commodities |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Financial liabilities | 0 | 0
Over 5 years | Trade payables and other (excluding contract liabilities) |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Financial liabilities | 0 | 0
Over 5 years | Net debt derivatives |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Financial assets | 0 | 0
Over 5 years | Net cash flows from derivative assets related to currencies and commodities |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Financial assets | € 0 | € 0

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The fair value of financial assets. [Refer: At fair value [member]; Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph 25 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_25&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_FinancialAssetsAtFairValue
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The fair value of financial liabilities. [Refer: At fair value [member]; Financial liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph 25 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_25&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_FinancialLiabilitiesAtFairValue
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of liabilities related to the entity's leases. Lease is a contract, or part of a contract, that conveys the right to use an underlying asset for a period of time in exchange for consideration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2021-01-01 -Paragraph 47 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2021-en-r&anchor=para_47_b&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_LeaseLiabilities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_NotLaterThanOneYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialLiabilitiesAxis=cstm_Borrowings1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialLiabilitiesAxis=cstm_InterestsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialLiabilitiesAxis=cstm_NetDebtDerivativeLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialLiabilitiesAxis=cstm_NetCashFlowsFromDerivativesLiabilitiesRelatedToCurrenciesAndCommoditiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialLiabilitiesAxis=cstm_TradePayablesAndOtherExcludingDeferredRevenueAndContractLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=cstm_NetDebtDerivativeAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=cstm_NetCashFlowsFromDerivativeAssetsRelatedToCurrenciesAndCommoditiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_LaterThanOneYearAndNotLaterThanFiveYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_LaterThanFiveYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |