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Property, plant and equipment - Summary of Acquisitions and Capitalized Interest by Operating Segment (Details) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disclosure of acquisitions of property plant and equipment by operating segments [line items]
Acquisitions	€ 1,717	€ 1,693	€ 1,748
Capitalized interest	51	26	17
Biopharma (operating segment)
Disclosure of acquisitions of property plant and equipment by operating segments [line items]
Acquisitions	1,554	1,592	1,678
Biopharma (operating segment) | Manufacturing & Supply
Disclosure of acquisitions of property plant and equipment by operating segments [line items]
Acquisitions	1,114	1,188	1,129
Opella Business
Disclosure of acquisitions of property plant and equipment by operating segments [line items]
Acquisitions		163	101	€ 70
Opella Business | Manufacturing & Supply
Disclosure of acquisitions of property plant and equipment by operating segments [line items]
Acquisitions	€ 135	€ 90	€ 63

X

- Definition

The amount of additions to property, plant and equipment other than those acquired through business combinations. [Refer: Business combinations [member]; Property, plant and equipment]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 16
-IssueDate 2023-01-01
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X

- Definition

The amount of interest costs that an entity incurs in connection with the borrowing of funds that are directly attributable to the acquisition, construction or production of a qualifying asset and which form part of the cost of that asset.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

Disclosure of acquisitions of property plant and equipment by operating segments.

+ References

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