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Share Capital (Tables)
 6 Months Ended
Jun. 30, 2018
Text block1 [abstract]  
Schedule of Share Capital
            In millions of Euros  
     Number of
shares		      Share
capital		      Share
premium		  

At January 1, 2018

      134,510,623        3        420  

New shares issued(A)

      182,716        —          —    
  

 

 

     

 

 

     

 

 

  

At June 30, 2018(B)

      134,693,339        3        420  
  

 

 

     

 

 

     

 

 

  

 

(A) Constellium N.V. issued and granted 182,716 Class A ordinary shares to certain employees related to share-based compensation plans.
(B) Constellium N.V. holds 38,597 Class A ordinary shares at June 30, 2018.