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Other current receivables (Details) - CHF (SFr) SFr in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021
Other current receivables [abstract] |  |
Other current receivable | SFr 124 | SFr 101
Swiss VAT | 249 | 327
Withholding tax | 19 | 0
Total other current receivables | SFr 392 | SFr 428
Top of Range [Member] |  |
Other current receivables [abstract] |  |
Maturity period, other current receivables | 3 months |

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- Definition Maturity period, other current receivables + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

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- Definition Miscellaneous other current receivables + References No definition available. + Details
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Namespace Prefix: | aciu_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Withholding tax receivables + References No definition available. + Details
Name: | aciu_WithholdingTaxReceivables
Namespace Prefix: | aciu_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition The amount of current value added tax receivables. [Refer: Value added tax receivables] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 78 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_78_b&doctype=Standard -URIDate 2021-03-24 + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition The amount of current other receivables. [Refer: Other receivables] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 78 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_78_b&doctype=Standard -URIDate 2021-03-24 + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
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Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |