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Provisions for employee benefits (Details) - EUR (€) € in Millions | Dec. 31, 2018 | Dec. 31, 2017
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Statement [Line Items] |  |
Provisions for employee benefits | € 1,117 | € 1,022
Italian defined benefit plans [Member] |  |
Statement [Line Items] |  |
Provisions for employee benefits | 275 | 284
Foreign defined benefit plans [Member] |  |
Statement [Line Items] |  |
Provisions for employee benefits | 385 | 409
FISDE foreign medical plans and other [Member] |  |
Statement [Line Items] |  |
Provisions for employee benefits | 148 | 135
Defined benefit plans [Member] |  |
Statement [Line Items] |  |
Provisions for employee benefits | 808 | 828
Other benefit plans [Member] |  |
Statement [Line Items] |  |
Provisions for employee benefits | € 309 | € 194

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- Definition The amount of provisions for employee benefits. [Refer: Employee benefits expense; Provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 78 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_78_d&doctype=Standard -URIDate 2018-03-16 + Details
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