Intangible Assets - Summary of Goodwill Recognized (Details) - EUR (€) € in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure of detailed information about intangible assets [line items]
Goodwill	€ 57.8	€ 53.7
CGU Immunotherapies
Disclosure of detailed information about intangible assets [line items]
Goodwill	57.3	53.2
External Product Sales of JPT
Disclosure of detailed information about intangible assets [line items]
Goodwill	€ 0.5	€ 0.5

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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