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SUBSIDIARIES AND OPERATING SEGMENTS (Tables)
 12 Months Ended
Dec. 31, 2019
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, 2019.
Entity
 
Country
 
% Group Interest
 
Consolidation
Method
Cross Operating Segment
 
 
 
 
 
 
Constellium Singen GmbH (AS&I and P&ARP)
 
Germany
 
100
%
 
Full
Constellium Valais S.A. (AS&I and A&T)
 
Switzerland
 
100
%
 
Full
AS&I
 
 
 
 
 
 
Constellium Automotive USA, LLC
 
U.S.
 
100
%
 
Full
Constellium Engley (Changchun) Automotive Structures Co Ltd.
 
China
 
54
%
 
Full
Constellium Extrusions Decin S.r.o.
 
Czech Republic
 
100
%
 
Full
Constellium Extrusions Deutschland GmbH
 
Germany
 
100
%
 
Full
Constellium Extrusions Landau GmbH
 
Germany
 
100
%
 
Full
Constellium Extrusions Burg GmbH
 
Germany
 
100
%
 
Full
Constellium Extrusions France S.A.S.
 
France
 
100
%
 
Full
Constellium Extrusions Levice S.r.o.
 
Slovakia
 
100
%
 
Full
Constellium Automotive Mexico, S. DE R.L. DE C.V.
 
Mexico
 
100
%
 
Full
Constellium Automotive Mexico Trading, S. DE R.L. DE C.V.
 
Mexico
 
100
%
 
Full
Astrex Inc
 
Canada
 
50
%
 
Full
Constellium Automotive Zilina S.r.o.
 
Slovakia
 
100
%
 
Full
Constellium Automotive Nanjing Co Ltd
 
China
 
100
%
 
Full
Constellium Automotive Spain SL
 
Spain
 
100
%
 
Full
A&T
 
 
 
 
 
 
Constellium Issoire S.A.S.
 
France
 
100
%
 
Full
Constellium Montreuil Juigné S.A.S.
 
France
 
100
%
 
Full
Constellium China Limited
 
China
 
100
%
 
Full
Constellium Japan KK
 
Japan
 
100
%
 
Full
Constellium Rolled Products Ravenswood, LLC
 
U.S.
 
100
%
 
Full
Constellium Southeast Asia PTE LTD
 
Singapore
 
100
%
 
Full
Constellium Ussel S.A.S.
 
France
 
100
%
 
Full
AluInfra Services SA (A)
 
Switzerland
 
50
%
 
Full
P&ARP
 
 
 
 
 
 
Constellium Deutschland GmbH
 
Germany
 
100
%
 
Full
Constellium Rolled Products Singen GmbH KG
 
Germany
 
100
%
 
Full
Constellium Property and Equipment Company, LLC
 
U.S.
 
100
%
 
Full
Constellium Neuf Brisach S.A.S.
 
France
 
100
%
 
Full
Constellium Muscle Shoals LLC
 
U.S.
 
100
%
 
Full
Constellium Holding Muscle Shoals LLC
 
U.S.
 
100
%
 
Full
Constellium Muscle Shoals Funding II LLC
 
U.S.
 
100
%
 
Full
Listerhill Total Maintenance Center LLC
 
U.S.
 
100
%
 
Full
Constellium Metal Procurement LLC
 
U.S.
 
100
%
 
Full
Constellium Bowling Green LLC
 
U.S.
 
100
%
 
Full
Rhenaroll
 
France
 
50
%
 
Equity
Holdings & Corporate
 
 
 
 
 
 
C-TEC Constellium Technology Center S.A.S.
 
France
 
100
%
 
Full
Constellium Finance S.A.S.
 
France
 
100
%
 
Full
Constellium France III
 
France
 
100
%
 
Full
Constellium France Holdco S.A.S.
 
France
 
100
%
 
Full
Constellium International
 
France
 
100
%
 
Full
Constellium Paris S.A.S
 
France
 
100
%
 
Full
Constellium Germany Holdco GmbH & Co. KG
 
Germany
 
100
%
 
Full
Constellium Germany Verwaltungs GmbH
 
Germany
 
100
%
 
Full
Constellium UK Limited
 
United Kingdom
 
100
%
 
Full
Constellium U.S. Holdings I, LLC
 
U.S.
 
100
%
 
Full
Constellium Switzerland AG
 
Switzerland
 
100
%
 
Full
Constellium W S.A.S.
 
France
 
100
%
 
Full
Constellium Treuhand UG
 
Germany
 
100
%
 
Full
Engineered Products International S.A.S.
 
France
 
100
%
 
Full
(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