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Provisions, income tax liabilities and other liabilities - Estimated Amounts of Employer's Contributions to Plan Assets (Details) - Year 1 € in Millions	12 Months Ended
	Dec. 31, 2023 EUR (€)
Disclosure of fair value of plan assets [line items]
Estimate of contributions expected to be paid to plan for next annual reporting period	€ 86
France
Disclosure of fair value of plan assets [line items]
Estimate of contributions expected to be paid to plan for next annual reporting period	0
Germany
Disclosure of fair value of plan assets [line items]
Estimate of contributions expected to be paid to plan for next annual reporting period	0
US
Disclosure of fair value of plan assets [line items]
Estimate of contributions expected to be paid to plan for next annual reporting period	0
UK
Disclosure of fair value of plan assets [line items]
Estimate of contributions expected to be paid to plan for next annual reporting period	46
Other
Disclosure of fair value of plan assets [line items]
Estimate of contributions expected to be paid to plan for next annual reporting period	€ 40

X

- Definition

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.

+ References

No definition available.

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- Definition

The estimate of the expected contributions to be made to a defined benefit plan for the next annual reporting period. [Refer: Defined benefit plans [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 19
-IssueDate 2023-01-01
-Paragraph 147
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2023-en-r&anchor=para_147_b&doctype=Standard
-URIDate 2023-03-23

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 19
-IssueDate 2023-01-01
-Paragraph 148
-Subparagraph d
-Clause iii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2023-en-r&anchor=para_148_d_iii&doctype=Standard
-URIDate 2023-03-23

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