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SUBSIDIARIES AND AFFILIATES (Tables)
 12 Months Ended
Dec. 31, 2023
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. All entities are consolidated except otherwise stated in the footnotes.
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 GmbH (A)Germany100%
Constellium Extrusions Landau GmbH (A)Germany100%
Constellium Extrusions Burg GmbH (A)Germany100%
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 China Co. Ltd.China100%
Constellium Japan KKJapan100%
Constellium Rolled Products Ravenswood, LLCU.S.100%
Constellium Ussel S.A.S. (B)France100%
AluInfra Services SA (C)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%
Rhenaroll SA (D)France50%
Holdings & Corporate
C-TEC Constellium Technology Center S.A.S.France100%
Constellium Finance S.A.S.France100%
Constellium France III S.A.S.France100%
Constellium France Holdco S.A.S.France100%
Constellium International S.A.S.France100%
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)On September 29,2023, the Group disposed of its interest in its subsidiary Constellium Extrusions Deutschland GmbH ("CED") in the AS&I business segment (see NOTE 30 - Disposal of subsidiaries). Therefore, Constellium Extrusions Landau GmbH and Constellium Extrusions Burg GmbH, which where subsidiaries of CED, were also disposed of as part of this transaction.
(B)On February 2, 2023, the Group disposed of its interest in its subsidiary Constellium Ussel S.A.S., in the A&T business segment (see NOTE 30 - Disposal of subsidiaries).
(C)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.
(D)Rhenaroll is accounted for under the equity method.