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Provisions (Tables)
 12 Months Ended
Dec. 31, 2022
Provisions [abstract]  
Schedule of provisions
               
    Current liabilities   Non-current liabilities
  Notes December 31, 2022   December 31, 2021   December 31, 2022   December 31, 2021
Provisions for litigation 28 106   93   1,186   1,012
Employee post retirement obligation 29 66   99   1,260   1,533
Payroll, related charges and other remunerations   864   816   -   -
Onerous contracts 19 -   37   -   874
    1,036   1,045   2,446   3,419