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REVENUE - Disaggregation of Revenue by Product Line (Details) - EUR (€) € in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Disclosure of products and services [line items]
Total Revenue	€ 2,275	€ 1,518	€ 4,254	€ 2,859
Packaging rolled products
Disclosure of products and services [line items]
Total Revenue	985	648	1,837	1,167
Automotive rolled products
Disclosure of products and services [line items]
Total Revenue	308	213	571	421
Specialty and other thin-rolled products
Disclosure of products and services [line items]
Total Revenue	54	43	104	80
Aerospace rolled products
Disclosure of products and services [line items]
Total Revenue	183	100	326	187
Transportation, industry, defense and other rolled products
Disclosure of products and services [line items]
Total Revenue	257	174	487	321
Automotive extruded products
Disclosure of products and services [line items]
Total Revenue	247	176	473	377
Other extruded products
Disclosure of products and services [line items]
Total Revenue	€ 241	€ 164	€ 456	€ 306

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

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- 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

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- Details

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