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SUBSIDIARIES AND AFFILIATES (Tables)
 12 Months Ended
Dec. 31, 2021
Disclosure of subsidiaries [abstract]  
Schedule of Group's Affiliates and Legal Entities Included in Consolidated Financial Statements
The following Group’s affiliates are legal entities included in the Consolidated Financial Statements of the Group at December 31, 2021. All entities are consolidated except for Rhenaroll which is accounted for under the equity method.
EntityCountry% Group Interest
Cross Operating Segment
Constellium Singen GmbH (AS&I and P&ARP)Germany100%
Constellium Valais S.A. (AS&I and A&T)Switzerland100%
AS&I
Constellium Automotive USA, LLCU.S.100%
Constellium Engley (Changchun) Automotive Structures Co Ltd.China54%
Constellium Extrusions Decin S.r.o.Czech Republic100%
Constellium Extrusions Deutschland GmbHGermany100%
Constellium Extrusions Landau GmbHGermany100%
Constellium Extrusions Burg GmbHGermany100%
Constellium Extrusions France S.A.S.France100%
Constellium Extrusions Levice S.r.o.Slovakia100%
Constellium Automotive Mexico, S. DE R.L. DE C.V.Mexico100%
Constellium Automotive Mexico Trading, S. DE R.L. DE C.V.Mexico100%
Astrex IncCanada50%
Constellium Automotive Zilina S.r.o.Slovakia100%
Constellium Automotive (Nanjing) Co. Ltd.China100%
Constellium Automotive Spain SLSpain100%
Constellium UK LimitedUnited Kingdom100%
A&T
Constellium Issoire S.A.S.France100%
Constellium Montreuil Juigné S.A.S.France100%
Constellium ChinaChina100%
Constellium Japan KKJapan100%
Constellium Rolled Products Ravenswood, LLCU.S.100%
Constellium Ussel S.A.S.France100%
AluInfra Services SA (A)Switzerland50%
P&ARP
Constellium Deutschland GmbHGermany100%
Constellium Rolled Products Singen GmbH & Co. KGGermany100%
Constellium Neuf Brisach S.A.S.France100%
Constellium Muscle Shoals LLCU.S.100%
Constellium Holdings Muscle Shoals LLCU.S.100%
Constellium Muscle Shoals Funding II LLCU.S.100%
Constellium Muscle Shoals Funding III LLCU.S.100%
Constellium Metal Procurement LLCU.S.100%
Constellium Bowling Green LLCU.S.100%
RhenarollFrance50%
Holdings & Corporate
C-TEC Constellium Technology Center S.A.S.France100%
Constellium Finance S.A.S.France100%
Constellium France IIIFrance100%
Constellium France Holdco S.A.S.France100%
Constellium InternationalFrance100%
Constellium Paris S.A.S.France100%
Constellium Germany Holdco GmbH & Co. KGGermany100%
Constellium Germany Verwaltungs GmbHGermany100%
Constellium US Holdings I, LLCU.S.100%
Constellium US Intermediate Holdings LLCU.S.100%
Constellium Switzerland AGSwitzerland100%
Constellium Treuhand UG (haftunsgbeschränkt)Germany100%
Engineered Products International S.A.S.France100%
(A)AluInfra Services SA, the joint venture created with Novelis in July 2018, is consolidated as a joint operation and is immaterial to the Group Consolidated Financial Statements.