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Note 29 - Treasury Shares Shares Owned By Third Parties But Managed (Details) - € / shares
Dec. 31, 2018
Dec. 31, 2017
Mar. 29, 2017
Dec. 31, 2016
Sep. 28, 2016
Mar. 31, 2016
Shares Owned By Third Parties But Managed By The Group Abstract            
Number Of Shares Owned By Third Parties 25,306,229 34,597,310   85,766,602    
Par Value Per Share € 0.49 € 0.49 € 0.49 € 0.49 € 0.49 € 0.49
Percentage Share Capital 0.92% 0.97%   1.38%