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Financial instruments fair value risk - Summary of Reconciliation of Movements in Level 3 Valuations (Details) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Jul. 07, 2022
Nutrafol
Disclosure of Fair Value Measurement of Assets [Line Items]
Fair value of equity interest in acquiree held immediately before acquisition date	€ 0	€ (157)	€ (157)
Fair value | Level 3
Disclosure of Fair Value Measurement of Assets [Line Items]
Assets and liabilities at beginning of period	696	748
Gains/(losses) recognised in income statement	(68)	11
Gains/(losses) recognised in other comprehensive income	(8)	55
Purchases and new issues	71	94
Sales and settlements	(7)	(212)
Assets and liabilities at end of period	€ 684	€ 696

X

- Definition

The acquisition-date fair value of equity interest in the acquiree held by the acquirer immediately before the acquisition date in a business combination achieved in stages. [Refer: Business combinations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 3
-IssueDate 2023-01-01
-Paragraph B64
-Subparagraph p
-Clause i
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-URIDate 2023-03-23

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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

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- Definition

Financial assets and financial liabilities at fair value.

+ References

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- Definition

Gains (losses) recognised in other comprehensive income, fair value measurement, Assets Liabilities.

+ References

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- Definition

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+ References

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- Definition

Purchases and new issues, fair value measurement, assets and liabilities.

+ References

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- Definition

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+ References

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