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Goodwill and Other Intangible Assets - Additional Information (Details) - EUR (€) € in Millions		6 Months Ended
	May 10, 2024	Jun. 30, 2024	Dec. 31, 2023
Disclosure of reconciliation of changes in goodwill [line items]
Goodwill		€ 50,080	€ 49,404
Carrying amount of intangible assets		26,653	24,319
Other intangible assets excluding software
Disclosure of reconciliation of changes in goodwill [line items]
Acquisitions and other increases		772
Other intangible assets excluding software | Vaccines Co-exclusive licensing agreement | Novavax
Disclosure of reconciliation of changes in goodwill [line items]
Acquisitions and other increases	€ 463
Marketed products
Disclosure of reconciliation of changes in goodwill [line items]
Carrying amount of intangible assets		€ 16,300	16,600
Weighted average amortization period		11 years
Technological platforms
Disclosure of reconciliation of changes in goodwill [line items]
Carrying amount of intangible assets		€ 1,400	€ 1,200
Weighted average amortization period		18 years

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- Definition

The amount of additions to intangible assets other than goodwill, other than those acquired through business combinations. [Refer: Business combinations [member]; Intangible assets other than goodwill]

+ References

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The amount of assets representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognised. [Refer: Business combinations [member]]

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The amount of identifiable non-monetary assets without physical substance. This amount does not include goodwill. [Refer: Goodwill]

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