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Summary of significant accounting policies - Income Tax Expense (Details) - EUR (€)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023		Dec. 31, 2022	[1]
Disclosure Of Detailed Information About Income Taxes [Line Items]
Deferred tax expense	€ (948,000,000)	€ (1,234,000,000)	[1]	€ (722,000,000)
Temporary differences subject to GILTI
Disclosure Of Detailed Information About Income Taxes [Line Items]
Deferred tax expense		€ 0
[1] (a) Figures for comparative periods (2023 and 2022) have been re-presented on a consistent basis to reflect the classification of Opella as a discontinued operation.

X

- Definition

The amount of tax expense (income) relating to changes in deferred tax liabilities and deferred tax assets. [Refer: Deferred tax assets; Deferred tax liabilities]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 12
-IssueDate 2023-01-01
-Paragraph 81
-Subparagraph g
-Clause ii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2023-en-r&anchor=para_81_g_ii&doctype=Standard
-URIDate 2023-03-23

+ Details

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X

- Definition

Disclosure Of Detailed Information About Income Taxes

+ References

No definition available.

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- Details

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