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Equity - Schedule of changes in share of associates, joint ventures and other reserves (Details) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disclosure of equity [Line Items]
Opening balance	€ (2,767)	€ (2,192)
Closing balance	(687)	(2,767)	€ (2,192)
Share of associates, joint ventures and other reserves
Disclosure of equity [Line Items]
Opening balance	3,047	3,603	3,416
Result for the year	125	336	161
Transfer to/from retained earnings	(565)	(892)	26
Closing balance	€ 2,607	€ 3,047	€ 3,603

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- 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 increase (decrease) in equity resulting from the appropriation of retained earnings. [Refer: Retained earnings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
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-IssueDate 2024-01-01
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- Definition

A component of equity representing reserves within equity, not including retained earnings. [Refer: Retained earnings]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
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- Definition

Changes in transfer to or from retained earnings.

+ References

No definition available.

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