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Intangible assets - Goodwill related to Gas & Power segment (Details) - EUR (€) € in Millions	Dec. 31, 2020	Dec. 31, 2019
Intangible assets
Goodwill	€ 1,297	€ 1,265
Eni gas e luce
Intangible assets
Goodwill	1,046	981
Eni gas e luce | CGU Domestic Market
Intangible assets
Goodwill	904	839
Eni gas e luce | CGU Foreign Market
Intangible assets
Goodwill	€ 142	€ 142

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- Definition

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- Definition

The amount of assets representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognised. [Refer: Business combinations [member]]

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