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Contract revenues, Contract Revenue Attributable to Licensing Arrangements (Details) - CHF (SFr) SFr in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Contract Revenue [Abstract] |  |  |
Total contract revenues | SFr 3,935 | SFr 0 | SFr 15,431
Lilly [Member] |  |  |
Contract Revenue [Abstract] |  |  |
Total contract revenues | 0 | SFr 0 | 14,348
Percentage of contract revenues |  | 93.00% |
Janssen |  |  |
Contract Revenue [Abstract] |  |  |
Total contract revenues | 0 | SFr 0 | 1,083
Life Molecular Imaging [Member] |  |  |
Contract Revenue [Abstract] |  |  |
Total contract revenues | SFr 3,935 | SFr 0 | SFr 0
Percentage of contract revenues | 100.00% |  |

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- Definition The percentage of the entity's revenue. [Refer: Revenue] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 8 -IssueDate 2021-01-01 -Paragraph 34 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2021-en-r&anchor=para_34&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The amount of revenue from contracts with customers. A customer is a party that has contracted with an entity to obtain goods or services that are an output of the entity’s ordinary activities in exchange for consideration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2021-01-01 -Paragraph 113 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2021-en-r&anchor=para_113_a&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2021-01-01 -Paragraph 114 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2021-en-r&anchor=para_114&doctype=Standard -URIDate 2021-03-24 + Details
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