Finance debts - Additional information (Details) € in Millions	12 Months Ended
Dec. 31, 2023 EUR (€) NUMBER MT GW	Dec. 31, 2022 EUR (€)
Borrowings
Increase (decrease) in finance debts	€ 1,812
Debts subjected to covenants	732	€ 862
Borrowings	28,729	€ 26,917
Sustainability-linked contracts with banks
Borrowings
Borrowings	701
Euro Medium Term Notes, Ordinary Bonds with sustainability-linked bonds
Borrowings
Nominal value	16,778
Borrowings	16,931
Maximum amount issuable	20
Proceeds from issue of bonds	1,250
Sustainability-linked bonds for retail investors
Borrowings
Proceeds from issue of bonds	2,000
Ordinary Bonds with sustainability-linked bonds
Borrowings
Nominal value	21,284
Borrowings	21,491
Proceeds from issue of bonds	€ 4,000
Number of bonds \| NUMBER	2
Ordinary Bonds with sustainability-linked bonds \| Not later than 18 months
Borrowings
Borrowings	€ 2,821
Ordinary Bonds with sustainability-linked bonds \| Minimum
Borrowings
Renewable energy capacity target by year end 2025 \| GW	5
Ordinary Bonds with sustainability-linked bonds \| Maximum
Borrowings
Net carbon footprint upstream target by year end 2025 \| MT	5.2
Euro Medium Term Notes, Ordinary sustainability-linked bonds, one
Borrowings
Nominal value	€ 1,000
Proceeds from issue of bonds	€ 750
Euro Medium Term Notes, Ordinary sustainability-linked bonds, one \| Minimum
Borrowings
Renewable energy capacity target by year end 2025 \| GW	5
Euro Medium Term Notes, Ordinary sustainability-linked bonds, one \| Maximum
Borrowings
Net carbon footprint upstream target by year end 2024 \| MT	7.4

The amount of debts subjected to covenants.

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The amount of increase (decrease) in finance debts.

+ References

No definition available.

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It represents the maximum amount issuable.

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No definition available.

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- Definition

Nominal mass used to calculate net carbon footprint upstream target by year end 2024.

+ References

No definition available.

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Nominal mass used to calculate net carbon footprint upstream target by year end 2025.

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No definition available.

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- Definition

The number of bonds issued.

+ References

No definition available.

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The cash inflow from the issuing of bonds.

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The renewable energy capacity target by year end 2025.

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- Definition

The amount of outstanding funds that the entity is obligated to repay.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

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The nominal or face amount of a financial instrument, used to calculate payments made on that instrument.

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