XML 484 R73.htm IDEA: XBRL DOCUMENT
v3.22.0.1

REVENUE - Disaggregation of Revenue by Product Line (Details) - EUR (€) € in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Disclosure of products and services [line items] |  |  |
Total Revenue by product line | € 6,152 | € 4,883 | € 5,907
Packaging rolled products |  |  |
Disclosure of products and services [line items] |  |  |
Total Revenue by product line | 2,673 | 1,960 | 2,172
Automotive rolled products |  |  |
Disclosure of products and services [line items] |  |  |
Total Revenue by product line | 854 | 663 | 816
Specialty and other thin-rolled products |  |  |
Disclosure of products and services [line items] |  |  |
Total Revenue by product line | 161 | 102 | 151
Aerospace rolled products |  |  |
Disclosure of products and services [line items] |  |  |
Total Revenue by product line | 389 | 560 | 863
Transportation, industry, defense and other rolled products |  |  |
Disclosure of products and services [line items] |  |  |
Total Revenue by product line | 713 | 442 | 557
Automotive extruded products |  |  |
Disclosure of products and services [line items] |  |  |
Total Revenue by product line | 735 | 665 | 797
Other extruded products |  |  |
Disclosure of products and services [line items] |  |  |
Total Revenue by product line | € 627 | € 491 | € 551

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_DisclosureOfProductsAndServicesLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of revenue from contracts with customers. A customer is a party that has contracted with an entity to obtain goods or services that are an output of the entity’s ordinary activities in exchange for consideration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2021-01-01 -Paragraph 113 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2021-en-r&anchor=para_113_a&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2021-01-01 -Paragraph 114 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2021-en-r&anchor=para_114&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_RevenueFromContractsWithCustomers
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | ifrs-full_ProductsAndServicesAxis=cstm_PackagingRolledProductsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ProductsAndServicesAxis=cstm_AutomotiveRolledProductsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ProductsAndServicesAxis=cstm_SpecialtyAndOtherThinrolledProductsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ProductsAndServicesAxis=cstm_AerospaceRolledProductsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ProductsAndServicesAxis=cstm_TransportationIndustryAndOtherRolledProductsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ProductsAndServicesAxis=cstm_AutomotiveExtrudedProductsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ProductsAndServicesAxis=cstm_OtherExtrudedProductsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |