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Income tax payable
 12 Months Ended
Dec. 31, 2017
Disclosure Of Income Tax Explanatory [Abstract]  
Disclosure of income tax payable explanatory [text block]

26 Income tax payable

(€ million)   December 31, 2017   December 31, 2016
Italian subsidiaries     174       97  
Non-Italian subsidiaires     298       329  
      472       426  

Income tax payable is described in note 43 — Income taxes.