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Other information about investments - Additional (Details) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Disclosure of detailed information about investments
Non-controlling interest	€ 471	€ 82
EniPower Group
Disclosure of detailed information about investments
Proportion of ownership interest in subsidiary (as a percent)	51.00%
Proportion of ownership interest in subsidiary held by non-controlling interests (as a percent)	49.00%
EniPower SpA
Disclosure of detailed information about investments
Proportion of ownership interest in subsidiary held by non-controlling interests (as a percent)	49.00%
Gains on disposals of subsidiary	€ 542

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The gain on the disposal of investments.

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The amount of equity in a subsidiary not attributable, directly or indirectly, to a parent. [Refer: Subsidiaries [member]]

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