XML 482 R53.htm IDEA: XBRL DOCUMENT v3.20.4

INVENTORIES (Tables)

12 Months Ended

Dec. 31, 2020

Subclassifications of assets, liabilities and equities [abstract]

Schedule of Inventories

						At December 31,
(in millions of Euros)						2020						2019
Finished goods						149						203
Work in progress						280						321
Raw materials						118						106
Stores and supplies						80						74
Inventories write down						(45)						(34)
Total inventories						582						670

X

- Definition

Disclosure of information about inventories explanatory.

+ References

No definition available.

+ Details

Name:	cstm_DisclosureOfInformationAboutInventoriesExplanatoryTableTextBlock
Namespace Prefix:	cstm_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	ifrs-full_SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration