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Asset acquisition (Details) - Program portfolio of therapeutics targeting asyn from Affiris SFr in Thousands, $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 USD ($) shares | Dec. 31, 2021 CHF (SFr)
Disclosure of detailed information about intangible assets [line items] |  |
Shares transferred as consideration in asset acquisition | shares | 7,106,840 |
Total consideration transferred, acquisition-date fair value, asset acquisition | $ 58.7 | SFr 55,100
Cash | 5.0 | 4,634
IPR&D asset |  | 50,416
Total assets acquired |  | 55,050
IPR&D intangible asset associated with ACI 7104.056 |  |
Disclosure of detailed information about intangible assets [line items] |  |
IPR&D asset | $ 53.7 | SFr 50,400
IPR&D intangible asset associated with ACI 7104.056 | Discount rate, measurement input |  |
Disclosure of detailed information about intangible assets [line items] |  |
Discount rate | 0.15 | 0.15

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