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Other financial assets (Details 2) € in Millions	12 Months Ended
	Dec. 31, 2018 EUR (€)
Quoted bonds issued by sovereign states, Fixed rate bonds [Member] | In Italy [Member]
Disclosure Of Financial Assets Explanatory [Line Items]
Financial assets at amortised cost	€ 24
Nominal Amount	24
Financial assets, at fair value	€ 25
Financial Assets Maturity Date	from 2019 to 2025
External Rating By Moodys Grade	Baa3
External Rating By Sp Grade	BBB
Quoted bonds issued by sovereign states, Fixed rate bonds [Member] | In Italy [Member] | Bottom of range [member]
Disclosure Of Financial Assets Explanatory [Line Items]
Financial Assets Nominal Rate Of Return	0.20
Quoted bonds issued by sovereign states, Fixed rate bonds [Member] | In Italy [Member] | Top of range [member]
Disclosure Of Financial Assets Explanatory [Line Items]
Financial Assets Nominal Rate Of Return	4.75
Quoted bonds issued by sovereign states, Floating rate bonds [Member] | In Italy [Member]
Disclosure Of Financial Assets Explanatory [Line Items]
Financial assets at amortised cost	€ 8
Nominal Amount	8
Financial assets, at fair value	€ 8
Financial Assets Maturity Date	from 2019 to 2020
External Rating By Moodys Grade	Baa3
External Rating By Sp Grade	BBB
Quoted bonds issued by sovereign states [Member]
Disclosure Of Financial Assets Explanatory [Line Items]
Financial assets at amortised cost	€ 64
Nominal Amount	64
Financial assets, at fair value	€ 65

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The credit grades that have been provided by Moody's.

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It represent the financial assets, nominal rate of return of securities.

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Represent the nominal amount.

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The amount of financial assets at amortised cost. The amortised cost is the amount at which financial assets are measured at initial recognition minus principal repayments, plus or minus the cumulative amortisation using the effective interest method of any difference between that initial amount and the maturity amount, and adjusted for any impairment. [Refer: Financial assets]

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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The fair value of financial assets. [Refer: At fair value [member]; Financial assets]

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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