AC Immune SA (SEC Filing Page | XBRL Cloud Viewer | XBRL Instance)

Line Label Object Class Period Type Balance Report ElementName
1 000100 - Document - Document and Entity Information Network

*

*

http://acimume.com/role/DocumentAndEntityInformation
2 Implied Table Table

*

*

implied:Table
3 Document and Entity Information [Abstract] Abstract aciu:DocumentAndEntityInformationAbstract
4 Entity Registrant Name Concept (Text/String) For Period dei:EntityRegistrantName
5 Entity Central Index Key Concept (CIK Number) For Period dei:EntityCentralIndexKey
6 Current Fiscal Year End Date Concept (Month/Day) For Period dei:CurrentFiscalYearEndDate
7 Entity Well-known Seasoned Issuer Concept (Yes/No) For Period dei:EntityWellKnownSeasonedIssuer
8 Entity Voluntary Filers Concept (Yes/No) For Period dei:EntityVoluntaryFilers
9 Entity Current Reporting Status Concept (Yes/No) For Period dei:EntityCurrentReportingStatus
10 Entity Shell Company Concept (Yes/No) For Period dei:EntityShellCompany
11 Entity Filer Category Concept (Filer Category) For Period dei:EntityFilerCategory
12 Entity Small Business Concept (Yes/No) For Period dei:EntitySmallBusiness
13 Entity Emerging Growth Company Concept (Yes/No) For Period dei:EntityEmergingGrowthCompany
14 Entity Ex Transition Period Concept (Yes/No) For Period dei:EntityExTransitionPeriod
15 Entity Public Float Concept (Monetary) As Of Credit dei:EntityPublicFloat
16 Entity Common Stock, Shares Outstanding Concept (Shares) As Of dei:EntityCommonStockSharesOutstanding
17 Document Type Concept (Submission Type) For Period dei:DocumentType
18 Amendment Flag Concept (Yes/No) For Period dei:AmendmentFlag
19 Document Period End Date Concept (Date) For Period dei:DocumentPeriodEndDate
20 Document Fiscal Year Focus Concept (Year) For Period dei:DocumentFiscalYearFocus
21 Document Fiscal Period Focus Concept (Fiscal Period) For Period dei:DocumentFiscalPeriodFocus
22 010000 - Statement - Balance Sheets Network

*

*

http://acimume.com/role/BalanceSheets
23 Implied Table Table

*

*

implied:Table
24 Balance Sheets [Abstract] Abstract ifrs-full:StatementOfFinancialPositionAbstract
25 Assets Abstract ifrs-full:AssetsAbstract
26 Non-current assets Abstract ifrs-full:NoncurrentAssetsAbstract
27 Property, plant and equipment Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
28 Long-term financial assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentRestrictedCashAndCashEquivalents
29 Total non-current assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssets
30 Current assets Abstract ifrs-full:CurrentAssetsAbstract
31 Prepaid expenses Concept (Monetary) As Of Debit ifrs-full:CurrentPrepayments
32 Accrued income Concept (Monetary) As Of Debit ifrs-full:CurrentContractAssets
33 Finance receivable Concept (Monetary) As Of Debit ifrs-full:NoncurrentLoansAndReceivables
34 Other current receivables Concept (Monetary) As Of Debit aciu:CurrentReceivablesClassifiedAsOtherAndValueAddedAndWithholdingTaxes
35 Short-term financial assets Concept (Monetary) As Of Debit ifrs-full:CurrentFinancialAssets
36 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
37 Total current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
38 Total assets Concept (Monetary) As Of Debit ifrs-full:Assets
39 SHAREHOLDERS' EQUITY AND LIABILITIES Abstract ifrs-full:EquityAndLiabilitiesAbstract
40 Shareholders' equity Abstract ifrs-full:EquityAbstract
41 Share capital Concept (Monetary) As Of Credit ifrs-full:IssuedCapital
42 Share premium Concept (Monetary) As Of Credit ifrs-full:SharePremium
43 Accumulated losses Concept (Monetary) As Of Credit ifrs-full:RetainedEarnings
44 Total shareholders' equity Concept (Monetary) As Of Credit ifrs-full:Equity
45 Non-current liabilities Abstract ifrs-full:NoncurrentLiabilitiesAbstract
46 Long-term debt obligation Concept (Monetary) As Of Credit ifrs-full:NoncurrentFinancialLiabilities
47 Net employee defined benefit liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentProvisionsForEmployeeBenefits
48 Total non-current liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentLiabilities
49 Current liabilities Abstract ifrs-full:CurrentLiabilitiesAbstract
50 Trade and other payables Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayables
51 Accrued expenses Concept (Monetary) As Of Credit ifrs-full:CurrentAccruedExpensesAndOtherCurrentLiabilities
52 Deferred income Concept (Monetary) As Of Credit ifrs-full:CurrentContractLiabilities
53 Short-term debt obligation Concept (Monetary) As Of Credit ifrs-full:CurrentFinancialLiabilities
54 Total current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
55 Total liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
56 Total shareholders' equity and liabilities Concept (Monetary) As Of Credit ifrs-full:EquityAndLiabilities
57 020000 - Statement - Statements of Loss Network

*

*

http://acimume.com/role/StatementsOfLoss
58 Implied Table Table

*

*

implied:Table
59 Statements of Loss [Abstract] Abstract ifrs-full:IncomeStatementAbstract
60 Revenues Abstract ifrs-full:RevenueAbstract
61 Contract revenue Concept (Monetary) For Period Credit ifrs-full:RevenueFromContractsWithCustomers
62 Total revenue Concept (Monetary) For Period Credit ifrs-full:Revenue
63 Operating expenses Abstract aciu:ExpensesOperatingAbstract
64 Research & development expenses Concept (Monetary) For Period Debit ifrs-full:ResearchAndDevelopmentExpense
65 General & administrative expenses Concept (Monetary) For Period Debit ifrs-full:SellingGeneralAndAdministrativeExpense
66 Total operating expenses Concept (Monetary) For Period Debit ifrs-full:OperatingExpense
67 Operating loss Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromOperatingActivities
68 Finance income / (expense), net Concept (Monetary) For Period Credit aciu:FinanceIncomeCostNet
69 Interest income Concept (Monetary) For Period Credit ifrs-full:RevenueFromInterest
70 Interest expense Concept (Monetary) For Period Debit ifrs-full:InterestExpense
71 Finance result, net Concept (Monetary) For Period Credit ifrs-full:FinanceIncomeCost
72 Loss before tax Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
73 Income tax expense Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
74 Loss for the period Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
75 Loss per share (EPS): Abstract ifrs-full:EarningsPerShareAbstract
76 Basic and diluted, income / (loss) for the period attributable to equity holders (in CHF per share) Concept (Share) For Period ifrs-full:BasicAndDilutedEarningsLossPerShare
77 030000 - Statement - Statements of Comprehensive Loss Network

*

*

http://acimume.com/role/StatementsOfComprehensiveLoss
78 Implied Table Table

*

*

implied:Table
79 Statements of Comprehensive Loss [Abstract] Abstract ifrs-full:StatementOfComprehensiveIncomeAbstract
80 Net loss for the period Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
81 Other comprehensive loss not to be reclassified to income or loss in subsequent periods (net of tax) Abstract ifrs-full:ComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTaxAbstract
82 Re-measurement losses on defined benefit plans (net of tax of CHF 0 for all periods) Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans
83 Total comprehensive loss, net of tax Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
84 030100 - Statement - Statements of Comprehensive Loss (Parenthetical) Network

*

*

http://acimume.com/role/StatementsOfComprehensiveLossParenthetical
85 Implied Table Table

*

*

implied:Table
86 Statements of Comprehensive Loss [Abstract] Abstract ifrs-full:StatementOfComprehensiveIncomeAbstract
87 Other comprehensive loss not to be reclassified to income or loss in subsequent periods (net of tax) Abstract ifrs-full:ComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTaxAbstract
88 Income tax expense Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToRemeasurementsOfDefinedBenefitPlansOfOtherComprehensiveIncome
89 040000 - Statement - Statements of Changes in Equity Network

*

*

http://acimume.com/role/StatementsOfChangesInEquity
90 Statement of changes in equity [table] Table

*

*

ifrs-full:StatementOfChangesInEquityTable
91 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
92 Equity [Member] Member ifrs-full:EquityMember
93 Share Capital [Member] Member ifrs-full:IssuedCapitalMember
94 Share Premium [Member] Member ifrs-full:SharePremiumMember
95 Accumulated Losses [Member] Member ifrs-full:RetainedEarningsMember
96 Statement of changes in equity [line items] LineItems ifrs-full:StatementOfChangesInEquityLineItems
97 Balance, beginning of period Concept (Monetary) As Of Credit ifrs-full:Equity
98 Net loss for the period Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
99 Other comprehensive loss Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncome
100 Total comprehensive loss, net of tax Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
101 Share-based payments Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughSharebasedPaymentTransactions
102 Preferred Series E extension shares Concept (Monetary) For Period Credit aciu:IssueOfEquityExtensionPreferenceSharesSeriesE
103 Proceeds from IPO net of underwriting fees Concept (Monetary) For Period Debit aciu:ProceedsFromIssuingSharesNetOfUnderwritingFees
104 Issuance of shares: Abstract ifrs-full:NumberOfSharesIssuedAbstract
105 Restricted Share Awards Concept (Monetary) For Period Credit aciu:IssueOfEquityRestrictedShareAwards
106 Exercise of options Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughExerciseOfOptions
107 Transaction costs Concept (Monetary) For Period Debit ifrs-full:ShareIssueRelatedCost
108 Balance, end of period Concept (Monetary) As Of Credit ifrs-full:Equity
109 050000 - Statement - Statements of Cash Flows Network

*

*

http://acimume.com/role/StatementsOfCashFlows
110 Implied Table Table

*

*

implied:Table
111 Statements of Cash Flows [Abstract] Abstract ifrs-full:StatementOfCashFlowsAbstract
112 Operating activities Abstract ifrs-full:CashFlowsFromUsedInOperatingActivitiesAbstract
113 Net loss for the period Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
114 Adjustments to reconcile net income for the period to net cash flows: Abstract ifrs-full:AdjustmentsForReconcileProfitLossAbstract
115 Depreciation of property, plant and equipment Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDepreciationExpense
116 Finance result, net Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForFinanceIncomeCost
117 Share-based compensation expense Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForSharebasedPayments
118 Changes in net employee defined benefit liability Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities
119 Accrued interest Concept (Monetary) For Period Debit aciu:AdjustmentsForAccruedInterestPayable
120 Changes in working capital: Abstract aciu:ChangesInWorkingCapitalAbstract
121 Increase in prepaid expenses Concept (Monetary) For Period Credit aciu:AdjustmentsForDecreaseIncreaseInPrepaidExpense
122 Increase in accrued income Concept (Monetary) For Period Debit aciu:AdjustmentsForDecreaseIncreaseInAccruedIncome
123 Decrease/(increase) in other current receivables Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInOtherOperatingReceivables
124 Increase in accrued expenses Concept (Monetary) For Period Credit aciu:AdjustmentsForIncreaseDecreaseInAccruedExpenses
125 Decrease/(increase) in deferred income Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInDeferredIncome
126 Increase/(decrease) in long-term debt obligation Concept (Monetary) For Period Credit aciu:AdjustmentsForIncreaseDecreaseLongTermFinancialLiabilities
127 Increase/(decrease) in trade and other payables Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInTradeAccountPayable
128 Cash used in operating activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperations
129 Interest income Concept (Monetary) For Period Debit ifrs-full:FinanceIncomeReceivedClassifiedAsOperatingActivities
130 Finance costs Concept (Monetary) For Period Credit ifrs-full:FinanceCostsPaidClassifiedAsOperatingActivities
131 Net cash flows used in operating activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperatingActivities
132 Investing activities Abstract ifrs-full:CashFlowsFromUsedInInvestingActivitiesAbstract
133 Short-term financial assets Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSalesOfInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethod
134 Purchases of property, plant and equipment Concept (Monetary) For Period Credit ifrs-full:PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities
135 Rental deposits Concept (Monetary) For Period Credit aciu:CashAdvancesForRentDeposit
136 Net cash flows used in investing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInInvestingActivities
137 Financing activities Abstract ifrs-full:CashFlowsFromUsedInFinancingActivitiesAbstract
138 Proceeds from issuance of preferred Series E Concept (Monetary) For Period Debit ifrs-full:ProceedsFromIssueOfPreferenceShares
139 Proceeds from public offerings of common shares, net of underwriting fees Concept (Monetary) For Period Debit aciu:ProceedsFromIssuingSharesNetOfUnderwritingFees
140 Transaction costs on public offerings of common shares Concept (Monetary) For Period Credit ifrs-full:PaymentsForShareIssueCosts
141 Proceeds from issuance of common shares Concept (Monetary) For Period Debit ifrs-full:ProceedsFromExerciseOfOptions
142 Proceeds from long-term debt obligation Concept (Monetary) For Period Debit ifrs-full:ProceedsFromBorrowingsClassifiedAsFinancingActivities
143 Repayment of short-term debt obligation Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfCurrentBorrowings
144 Net cash flows provided by financing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInFinancingActivities
145 Net increase/(decrease) in cash and cash equivalents Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseInCashAndCashEquivalents
146 Cash and cash equivalents, beginning of period Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
147 Exchange gains on cash and cash equivalents Concept (Monetary) For Period Debit ifrs-full:EffectOfExchangeRateChangesOnCashAndCashEquivalents
148 Cash and cash equivalents, end of period Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
149 Net increase/(decrease) in cash and cash equivalents Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseInCashAndCashEquivalents
150 050100 - Statement - Statements of Cash Flows (Parenthetical) Network

*

*

http://acimume.com/role/StatementsOfCashFlowsParenthetical
151 Statement of Cash Flows [Table] Table

*

*

aciu:StatementOfCashFlowsTable
152 Range [axis] Axis ifrs-full:RangeAxis
153 Ranges [member] Member ifrs-full:RangesMember
154 Top of Range [Member] Member ifrs-full:TopOfRangeMember
155 Statement of Cash Flows [Line Items] LineItems aciu:StatementOfCashFlowsLineItems
156 Supplementary non-cash activity include the following [Abstract] Abstract aciu:SupplementaryNonCashActivityAbstract
157 Long-term debt reclassified to short-term debt Concept (Monetary) For Period Credit aciu:NonCurrentBorrowingsReclassifiedToCurrentBorrowings
158 Finance receivables recorded to long-term obligations Concept (Monetary) For Period Credit aciu:FinanceReceivablesRecordedToLongTermObligations
159 Non-cash purchase, property plant and equipment Concept (Monetary) For Period Credit aciu:PurchaseOfPropertyPlantAndEquipmentNonCashAllocation
160 Write off of fixed assets Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment
161 060100 - Disclosure - General information Network

*

*

http://acimume.com/role/GeneralInformation
162 Implied Table Table

*

*

implied:Table
163 General information [Abstract] Abstract aciu:GeneralInformationAbstract
164 General information Concept (Text Block (HTML)) For Period aciu:DisclosureOfGeneralInformationAboutTheEntityExplanatoryTextBlock
165 060200 - Disclosure - Basis of preparation Network

*

*

http://acimume.com/role/BasisOfPreparation
166 Implied Table Table

*

*

implied:Table
167 Basis of preparation [Abstract] Abstract aciu:BasisOfPreparationAbstract
168 Basis of preparation Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfBasisOfPreparationOfFinancialStatementsExplanatory
169 060300 - Disclosure - Summary of significant accounting policies Network

*

*

http://acimume.com/role/SummaryOfSignificantAccountingPolicies
170 Implied Table Table

*

*

implied:Table
171 Summary of significant accounting policies [Abstract] Abstract ifrs-full:DisclosureOfInitialApplicationOfStandardsOrInterpretationsAbstract
172 Summary of significant accounting policies Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSummaryOfSignificantAccountingPoliciesExplanatory
173 060400 - Disclosure - Property, plant and equipment Network

*

*

http://acimume.com/role/PropertyPlantAndEquipment
174 Implied Table Table

*

*

implied:Table
175 Property, plant and equipment [Abstract] Abstract ifrs-full:DisclosureOfPropertyPlantAndEquipmentAbstract
176 Property, plant and equipment Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfPropertyPlantAndEquipmentExplanatory
177 060500 - Disclosure - Cash and cash equivalents and financial assets Network

*

*

http://acimume.com/role/CashAndCashEquivalentsAndFinancialAssets
178 Implied Table Table

*

*

implied:Table
179 Cash and cash equivalents and financial assets [Abstract] Abstract ifrs-full:DisclosureOfFinancialAssetsAbstract
180 Cash and cash equivalents and financial assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfRestrictedCashAndCashEquivalentsExplanatory
181 060600 - Disclosure - Prepaid expenses and accrued income Network

*

*

http://acimume.com/role/PrepaidExpensesAndAccruedIncome
182 Implied Table Table

*

*

implied:Table
183 Prepaid expenses and accrued income [Abstract] Abstract ifrs-full:PrepaymentsAndAccruedIncomeAbstract
184 Prepaid expenses and accrued income Concept (Text Block (HTML)) For Period aciu:DisclosureOfPrepaidExpensesAndAccruedIncomeTextBlock
185 060700 - Disclosure - Other current receivables Network

*

*

http://acimume.com/role/OtherCurrentReceivables
186 Implied Table Table

*

*

implied:Table
187 Other current receivables [Abstract] Abstract aciu:OtherCurrentReceivablesAbstract
188 Other current receivables Concept (Text Block (HTML)) For Period aciu:DisclosureOfOtherCurrentReceivablesTextBlock
189 060800 - Disclosure - Share capital Network

*

*

http://acimume.com/role/ShareCapital
190 Implied Table Table

*

*

implied:Table
191 Share capital [Abstract] Abstract ifrs-full:ChangesInEquityAbstract
192 Share capital Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory
193 060900 - Disclosure - Trade payables, accrued liabilities and deferred income Network

*

*

http://acimume.com/role/TradePayablesAccruedLiabilitiesAndDeferredIncome
194 Implied Table Table

*

*

implied:Table
195 Trade payables, accrued liabilities and deferred income [Abstract] Abstract ifrs-full:TradeAndOtherCurrentPayablesAbstract
196 Trade payables and accrued liabilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTradeAndOtherPayablesExplanatory
197 061000 - Disclosure - Debt obligation Network

*

*

http://acimume.com/role/DebtObligation
198 Implied Table Table

*

*

implied:Table
199 Debt obligation [Abstract] Abstract aciu:DebtObligationAbstract
200 Debt obligation Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDebtSecuritiesExplanatory
201 061100 - Disclosure - Revenues Network

*

*

http://acimume.com/role/Revenues
202 Implied Table Table

*

*

implied:Table
203 Revenues [Abstract] Abstract ifrs-full:RevenueAbstract
204 Revenues Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfRevenueExplanatory
205 061200 - Disclosure - Expenses by category Network

*

*

http://acimume.com/role/ExpensesByCategory
206 Implied Table Table

*

*

implied:Table
207 Expenses by category [Abstract] Abstract aciu:ExpensesByCategoryAbstract
208 Expenses by category Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfExpensesExplanatory
209 061300 - Disclosure - Related-party transactions Network

*

*

http://acimume.com/role/RelatedpartyTransactions
210 Implied Table Table

*

*

implied:Table
211 Related-party transactions [Abstract] Abstract ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesAbstract
212 Related-party transactions Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfRelatedPartyExplanatory
213 061400 - Disclosure - Income taxes Network

*

*

http://acimume.com/role/IncomeTaxes
214 Implied Table Table

*

*

implied:Table
215 Income taxes [Abstract] Abstract ifrs-full:MajorComponentsOfTaxExpenseIncomeAbstract
216 Income taxes Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfIncomeTaxExplanatory
217 061500 - Disclosure - Retirement benefit plan Network

*

*

http://acimume.com/role/RetirementBenefitPlan
218 Implied Table Table

*

*

implied:Table
219 Retirement benefit plan [Abstract] Abstract ifrs-full:DisclosureOfDefinedBenefitPlansAbstract
220 Retirement benefit plan Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEmployeeBenefitsExplanatory
221 061600 - Disclosure - Share-based compensation Network

*

*

http://acimume.com/role/SharebasedCompensation
222 Implied Table Table

*

*

implied:Table
223 Share-based compensation [Abstract] Abstract ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementAbstract
224 Share-based compensation Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSharebasedPaymentArrangementsExplanatory
225 061700 - Disclosure - Commitments and contingencies Network

*

*

http://acimume.com/role/CommitmentsAndContingencies
226 Implied Table Table

*

*

implied:Table
227 Commitments and contingencies [Abstract] Abstract aciu:CommitmentsAndContingenciesAbstract
228 Commitments and contingencies Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCommitmentsAndContingentLiabilitiesExplanatory
229 061800 - Disclosure - Earnings per share Network

*

*

http://acimume.com/role/EarningsPerShare
230 Implied Table Table

*

*

implied:Table
231 Earnings per share [Abstract] Abstract ifrs-full:EarningsPerShareAbstract
232 Earnings per share Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEarningsPerShareExplanatory
233 061900 - Disclosure - Financial instruments and risk management Network

*

*

http://acimume.com/role/FinancialInstrumentsAndRiskManagement
234 Implied Table Table

*

*

implied:Table
235 Financial instruments and risk management [Abstract] Abstract ifrs-full:DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsAbstract
236 Financial instruments and risk management Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinancialRiskManagementExplanatory
237 062000 - Disclosure - Capital risk management Network

*

*

http://acimume.com/role/CapitalRiskManagement
238 Implied Table Table

*

*

implied:Table
239 Capital risk management [Abstract] Abstract ifrs-full:DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalAbstract
240 Capital risk management Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalExplanatory
241 062100 - Disclosure - Quarterly Financial Results (Unaudited) Network

*

*

http://acimume.com/role/QuarterlyFinancialResultsUnaudited
242 Implied Table Table

*

*

implied:Table
243 Quarterly Financial Results (Unaudited) [Abstract] Abstract aciu:QuarterlyFinancialResultsUnauditedAbstract
244 Quarterly Financial Results (Unaudited) Concept (Text Block (HTML)) For Period aciu:DisclosureOfQuarterlyFinancialResultsTextBlock
245 062200 - Disclosure - Post balance sheet events Network

*

*

http://acimume.com/role/PostBalanceSheetEvents
246 Implied Table Table

*

*

implied:Table
247 Post balance sheet events [Abstract] Abstract aciu:PostBalanceSheetEventsAbstract
248 Post balance sheet events Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEventsAfterReportingPeriodExplanatory
249 070300 - Disclosure - Summary of significant accounting policies (Policies) Network

*

*

http://acimume.com/role/SummaryOfSignificantAccountingPoliciesPolicies
250 Implied Table Table

*

*

implied:Table
251 Summary of significant accounting policies [Abstract] Abstract ifrs-full:DisclosureOfInitialApplicationOfStandardsOrInterpretationsAbstract
252 Current vs. non-current classification Concept (Text Block (HTML)) For Period aciu:DescriptionOfAccountingPolicyForClassificationOfAssetsAndLiabilitiesPolicyTextBlock
253 Foreign currency transactions Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory
254 Revenue recognition Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForRecognitionOfRevenue
255 Research and development services Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForResearchAndDevelopmentExpenseExplanatory
256 Property, plant and equipment Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory
257 Fair value of financial assets and liabilities Concept (Text Block (HTML)) For Period aciu:FairValueOfFinancialAssetsAndLiabilitiesPolicyTextBlock
258 Share capital and public offering Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForIssuedCapitalExplanatory
259 Employee benefits Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory
260 Provisions Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForProvisionsExplanatory
261 Taxation Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForIncomeTaxExplanatory
262 Earnings per share Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForEarningsPerShareExplanatory
263 Preferred shares Concept (Text Block (HTML)) For Period aciu:DescriptionOfAccountingPolicyForPreferredSharesPolicyTextBlock
264 Critical judgments and accounting estimates Concept (Text Block (HTML)) For Period aciu:DescriptionOfAccountingPolicyForAccountingJudgmentsAndEstimatesPolicyTextBlock
265 Segment reporting Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForSegmentReportingExplanatory
266 Accounting pronouncements - not yet adopted Concept (Text Block (HTML)) For Period aciu:DisclosureOfAccountingPolicyForChangesInAccountingPoliciesNotYetAdoptedPolicyTextBlock
267 Accounting pronouncements - recently adopted Concept (Text Block (HTML)) For Period aciu:DisclosureOfAccountingPolicyForChangesInAccountingPoliciesRecentlyAdoptedTextBlock
268 080300 - Disclosure - Summary of significant accounting policies (Tables) Network

*

*

http://acimume.com/role/SummaryOfSignificantAccountingPoliciesTables
269 Implied Table Table

*

*

implied:Table
270 Summary of significant accounting policies [Abstract] Abstract ifrs-full:DisclosureOfInitialApplicationOfStandardsOrInterpretationsAbstract
271 Estimated useful life Concept (Text Block (HTML)) For Period aciu:ScheduleOfInformationAboutPropertyPlantAndEquipmentUsefulLifeTableTextBlock
272 080400 - Disclosure - Property, plant and equipment (Tables) Network

*

*

http://acimume.com/role/PropertyPlantAndEquipmentTables
273 Implied Table Table

*

*

implied:Table
274 Property, plant and equipment [Abstract] Abstract ifrs-full:DisclosureOfPropertyPlantAndEquipmentAbstract
275 Property, plant and equipment Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory
276 080501 - Disclosure - Cash and cash equivalents and financial assets (Tables) Network

*

*

http://acimume.com/role/CashAndCashEquivalentsAndFinancialAssetsTables
277 Implied Table Table

*

*

implied:Table
278 Cash and cash equivalents and financial assets [Abstract] Abstract ifrs-full:DisclosureOfFinancialAssetsAbstract
279 Cash and cash equivalents and short-term financial assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinancialAssetsExplanatory
280 080600 - Disclosure - Prepaid expenses and accrued income (Tables) Network

*

*

http://acimume.com/role/PrepaidExpensesAndAccruedIncomeTables
281 Implied Table Table

*

*

implied:Table
282 Prepaid expenses and accrued income [Abstract] Abstract ifrs-full:PrepaymentsAndAccruedIncomeAbstract
283 Prepaid expenses and accrued income Concept (Text Block (HTML)) For Period aciu:DisclosureOfDetailedInformationAboutPrepaidExpensesAndAccruedIncomeTableTextBlock
284 080700 - Disclosure - Other current receivables (Tables) Network

*

*

http://acimume.com/role/OtherCurrentReceivablesTables
285 Implied Table Table

*

*

implied:Table
286 Other current receivables [Abstract] Abstract aciu:OtherCurrentReceivablesAbstract
287 Other current receivables Concept (Text Block (HTML)) For Period aciu:DisclosureOfDetailedInformationAboutOtherCurrentReceivablesTableTextBlock
288 080800 - Disclosure - Share capital (Tables) Network

*

*

http://acimume.com/role/ShareCapitalTables
289 Implied Table Table

*

*

implied:Table
290 Share capital [Abstract] Abstract ifrs-full:ChangesInEquityAbstract
291 Summary of capital structure Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfClassesOfShareCapitalExplanatory
292 080900 - Disclosure - Trade payables, accrued liabilities and deferred income (Tables) Network

*

*

http://acimume.com/role/TradePayablesAccruedLiabilitiesAndDeferredIncomeTables
293 Implied Table Table

*

*

implied:Table
294 Trade payables, accrued liabilities and deferred income [Abstract] Abstract ifrs-full:TradeAndOtherCurrentPayablesAbstract
295 Trade payables and accrued liabilities Concept (Text Block (HTML)) For Period aciu:DisclosureOfDetailedInformationAboutTradePayablesAndAccruedLiabilitiesTableTextBlock
296 081100 - Disclosure - Revenues (Tables) Network

*

*

http://acimume.com/role/RevenuesTables
297 Implied Table Table

*

*

implied:Table
298 Revenues [Abstract] Abstract ifrs-full:RevenueAbstract
299 Changes in Contract Assets and Contract Liabilities Concept (Text Block (HTML)) For Period ifrs-full:ExplanationOfSignificantChangesInContractAssetsAndContractLiabilitiesExplanatory
300 Revenues Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfRevenueFromContractsWithCustomersExplanatory
301 081200 - Disclosure - Expenses by category (Tables) Network

*

*

http://acimume.com/role/ExpensesByCategoryTables
302 Implied Table Table

*

*

implied:Table
303 Expenses by category [Abstract] Abstract aciu:ExpensesByCategoryAbstract
304 Research and Development Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfResearchAndDevelopmentExpenseExplanatory
305 General and Administrative Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfGeneralAndAdministrativeExpenseExplanatory
306 Financial Result, net Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinanceIncomeExpenseExplanatory
307 081300 - Disclosure - Related-party transactions (Tables) Network

*

*

http://acimume.com/role/RelatedpartyTransactionsTables
308 Implied Table Table

*

*

implied:Table
309 Related-party transactions [Abstract] Abstract ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesAbstract
310 Key management compensation Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfAmountsIncurredByEntityForProvisionOfKeyManagementPersonnelServicesProvidedBySeparateManagementEntitiesExplanatory
311 081400 - Disclosure - Income taxes (Tables) Network

*

*

http://acimume.com/role/IncomeTaxesTables
312 Implied Table Table

*

*

implied:Table
313 Income taxes [Abstract] Abstract ifrs-full:MajorComponentsOfTaxExpenseIncomeAbstract
314 Income tax expense reconciled to loss Concept (Text Block (HTML)) For Period aciu:DisclosureOfDetailedInformationAboutIncomeTaxReconciliationTableTextBlock
315 Unrecognized deductible temporary differences, unused tax losses and unused tax credits Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsExplanatory
316 Tax losses expiry dates Concept (Text Block (HTML)) For Period aciu:DisclosureOfDetailedInformationAboutIncomeTaxLossesExpiryTableTextBlock
317 081500 - Disclosure - Retirement benefit plan (Tables) Network

*

*

http://acimume.com/role/RetirementBenefitPlanTables
318 Implied Table Table

*

*

implied:Table
319 Retirement benefit plan [Abstract] Abstract ifrs-full:DisclosureOfDefinedBenefitPlansAbstract
320 Defined benefit pension plan amounts recognized in the balance sheet and statement of income Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetExplanatory
321 Changes in defined benefit obligation, fair value of plan assets and unrecognized (gains) / losses Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFairValueOfPlanAssetsExplanatory
322 Actuarial assumptions and sensitivity analysis Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsExplanatory
323 081600 - Disclosure - Share-based compensation (Tables) Network

*

*

http://acimume.com/role/SharebasedCompensationTables
324 Implied Table Table

*

*

implied:Table
325 Share-based compensation [Abstract] Abstract ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementAbstract
326 Share-based compensation plans outstanding Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementExplanatory
327 Number and weighted average exercise prices of options under share option programs Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNumberAndWeightedAverageExercisePricesOfShareOptionsExplanatory
328 Outstanding options, exercise price range and expiry dates Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNumberAndWeightedAverageRemainingContractualLifeOfOutstandingShareOptionsExplanatory
329 Weighted-average assumptions Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsExplanatory
330 Summary of non-vested share awards (restricted share and restricted share units) Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatory
331 081700 - Disclosure - Commitments and contingencies (Tables) Network

*

*

http://acimume.com/role/CommitmentsAndContingenciesTables
332 Implied Table Table

*

*

implied:Table
333 Commitments and contingencies [Abstract] Abstract aciu:CommitmentsAndContingenciesAbstract
334 Maturity of commitments and contingencies Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfContingentLiabilitiesExplanatory
335 081800 - Disclosure - Earnings per share (Tables) Network

*

*

http://acimume.com/role/EarningsPerShareTables
336 Implied Table Table

*

*

implied:Table
337 Earnings per share [Abstract] Abstract ifrs-full:EarningsPerShareAbstract
338 Earnings per share Concept (Text Block (HTML)) For Period ifrs-full:EarningsPerShareExplanatory
339 Antidilutive securities Concept (Text Block (HTML)) For Period aciu:DilutiveEffectOfConvertibleInstrumentsTextBlock
340 081900 - Disclosure - Financial instruments and risk management (Tables) Network

*

*

http://acimume.com/role/FinancialInstrumentsAndRiskManagementTables
341 Implied Table Table

*

*

implied:Table
342 Financial instruments and risk management [Abstract] Abstract ifrs-full:DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsAbstract
343 Carrying amounts of financial assets and financial liabilities Concept (Text Block (HTML)) For Period aciu:DisclosureOfDetailedInformationAboutCarryingAmountsOfFinancialAssetsAndFinancialLiabilitiesTableTextBlock
344 082100 - Disclosure - Quarterly Financial Results (Unaudited) (Tables) Network

*

*

http://acimume.com/role/QuarterlyFinancialResultsUnauditedTables
345 Implied Table Table

*

*

implied:Table
346 Quarterly Financial Results (Unaudited) [Abstract] Abstract aciu:QuarterlyFinancialResultsUnauditedAbstract
347 Quarterly financial data Concept (Text Block (HTML)) For Period aciu:DisclosureOfDetailedInformationAboutQuarterlyFinancialResultsTextBlock
348 090100 - Disclosure - General information (Details) Network

*

*

http://acimume.com/role/GeneralInformationDetails
349 Implied Table Table

*

*

implied:Table
350 General information [Abstract] Abstract aciu:GeneralInformationAbstract
351 Number of proprietary technology platforms Concept (Integer) As Of aciu:NumberOfTechnologyPlatforms
352 090200 - Disclosure - Basis of preparation (Details) Network

*

*

http://acimume.com/role/BasisOfPreparationDetails
353 Disclosure of going concern [Table] Table

*

*

aciu:DisclosureOfGoingConcernTable
354 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
355 Share Capital [member] Member ifrs-full:ClassesOfShareCapitalMember
356 Public Offering [Member] Member aciu:InitialPublicOfferingMember
357 Disclosure of classes of going concern [Line Items] LineItems aciu:DisclosureOfClassesOfGoingConcernLineItems
358 Going concern [Abstract] Abstract aciu:GoingConcernAbstract
359 Company's cash position Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
360 Short-term financial assets Concept (Monetary) As Of Debit ifrs-full:CurrentFinancialAssets
361 Number of public offerings Concept (Integer) For Period aciu:NumberOfPublicOfferings
362 Gross proceeds received Concept (Monetary) For Period Debit ifrs-full:ProceedsFromIssueOfOrdinaryShares
363 090300 - Disclosure - Summary of significant accounting policies (Details) Network

*

*

http://acimume.com/role/SummaryOfSignificantAccountingPoliciesDetails
364 Disclosure of expected impact of initial application of new standards or interpretations [table] Table

*

*

ifrs-full:DescriptionOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretationsTable
365 New IFRSs [axis] Axis ifrs-full:NewIFRSsAxis
366 New IFRSs [member] Member ifrs-full:NewIFRSsMember
367 IFRS 16 [Member] Member aciu:IFRS16LeasesMember
368 Disclosure of expected impact of initial application of new standards or interpretations [line items] LineItems ifrs-full:DescriptionOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretationsLineItems
369 Accounting pronouncements - not yet adopted [Abstract] Abstract ifrs-full:DescriptionOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretationsAbstract
370 Right-of-use assets Concept (Monetary) As Of Debit ifrs-full:RightofuseAssets
371 Lease liabilities Concept (Monetary) As Of Credit ifrs-full:LeaseLiabilities
372 Cumulative effect adjustment to opening balance of accumulated losses Concept (Monetary) As Of Credit aciu:CumulativeEffectOfAdoptionOfNewAccountingPrincipalInPeriodOfAdoptionAccumulatedEarningsLosses
373 090300 - Disclosure - Summary of significant accounting policies (Details) Network

*

*

http://acimume.com/role/SummaryOfSignificantAccountingPoliciesDetails
374 Disclosure of classes of share capital [table] Table

*

*

ifrs-full:DisclosureOfClassesOfShareCapitalTable
375 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
376 Share Capital [member] Member ifrs-full:ClassesOfShareCapitalMember
377 Preferred Shares [Member] Member ifrs-full:PreferenceSharesMember
378 Disclosure of classes of share capital [line items] LineItems ifrs-full:DisclosureOfClassesOfShareCapitalLineItems
379 Preferred Shares [Abstract] Abstract aciu:PreferredSharesAbstract
380 Conversion ratio of preferred shares to common shares Concept (Pure) For Period aciu:ConvertibleSharesConversionRatio
381 090300 - Disclosure - Summary of significant accounting policies (Details) Network

*

*

http://acimume.com/role/SummaryOfSignificantAccountingPoliciesDetails
382 Disclosure of detailed information about property, plant and equipment [table] Table

*

*

ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
383 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
384 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
385 IT Equipment [Member] Member ifrs-full:ComputerEquipmentMember
386 Laboratory Equipment [Member] Member aciu:LaboratoryEquipmentMember
387 Leasehold Improvements / Furniture [Member] Member aciu:LeaseholdImprovementsAndFixturesAndFittingsMember
388 Disclosure of detailed information about property, plant and equipment [line items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
389 Residual value over its estimated useful life [Abstract] Abstract aciu:ResidualValueOverItsEstimatedUsefulLifeAbstract
390 Useful lives or depreciation rates, property, plant and equipment Concept (Text/String) For Period ifrs-full:UsefulLivesOrDepreciationRatesPropertyPlantAndEquipment
391 090300 - Disclosure - Summary of significant accounting policies (Details) Network

*

*

http://acimume.com/role/SummaryOfSignificantAccountingPoliciesDetails
392 Implied Table Table

*

*

implied:Table
393 Summary of significant accounting policies [Abstract] Abstract ifrs-full:DisclosureOfInitialApplicationOfStandardsOrInterpretationsAbstract
394 Income taxes [Abstract] Abstract ifrs-full:MajorComponentsOfTaxExpenseIncomeAbstract
395 Tax loss carryforward period Concept (xbrli:durationItemType) For Period aciu:IncomeTaxLossCarryforwardPeriod
396 Segment reporting [Abstract] Abstract ifrs-full:DisclosureOfOperatingSegmentsAbstract
397 Number of operating segments Concept (Integer) For Period aciu:OperatingSegmentsNumber
398 Number of reportable segments Concept (Integer) For Period aciu:ReportableSegmentsNumber
399 090400 - Disclosure - Property, plant and equipment (Details) Network

*

*

http://acimume.com/role/PropertyPlantAndEquipmentDetails
400 Disclosure of detailed information about property, plant and equipment [table] Table

*

*

ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
401 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
402 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
403 Furniture [Member] Member ifrs-full:FixturesAndFittingsMember
404 Computers / IT [Member] Member ifrs-full:ComputerEquipmentMember
405 Lab Equipment [Member] Member aciu:LaboratoryEquipmentMember
406 Leasehold Improvements [Member] Member ifrs-full:LeaseholdImprovementsMember
407 Carrying amount, accumulated depreciation, amortization and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
408 Carrying amount [member] Member ifrs-full:CarryingAmountMember
409 Acquisition Cost [Member] Member ifrs-full:GrossCarryingAmountMember
410 Accumulated Depreciation [Member] Member ifrs-full:AccumulatedDepreciationAndAmortisationMember
411 Disclosure of detailed information about property, plant and equipment [line items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
412 Property, plant and equipment [Abstract] Abstract ifrs-full:ReconciliationOfChangesInPropertyPlantAndEquipmentAbstract
413 Property, plant and equipment, beginning of period Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
414 Acquisitions Concept (Monetary) For Period Debit ifrs-full:AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment
415 Disposals Concept (Monetary) For Period Credit ifrs-full:DisposalsPropertyPlantAndEquipment
416 Disposals Concept (Monetary) For Period Debit aciu:DisposalsAccumulatedDepreciation
417 Depreciation expense Concept (Monetary) For Period ifrs-full:DepreciationPropertyPlantAndEquipment
418 Property, plant and equipment, end of period Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
419 090500 - Disclosure - Cash and cash equivalents and financial assets, Cash and cash equivalents and short-term financial assets (Details) Network

*

*

http://acimume.com/role/CashAndCashEquivalentsAndFinancialAssetsCashAndCashEquivalentsAndShorttermFinancialAssetsDetails
420 Implied Table Table

*

*

implied:Table
421 Cash and cash equivalents and financial assets [Abstract] Abstract ifrs-full:DisclosureOfFinancialAssetsAbstract
422 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
423 Short-term financial assets due in one year or less Concept (Monetary) As Of Debit ifrs-full:CurrentFinancialAssets
424 090502 - Disclosure - Cash and cash equivalents and financial assets, Cash and cash equivalents (Details) Network

*

*

http://acimume.com/role/CashAndCashEquivalentsAndFinancialAssetsCashAndCashEquivalentsDetails
425 Cash and cash equivalents [Table] Table

*

*

aciu:CashAndCashEquivalentsTable
426 Currency [Axis] Axis srt:CurrencyAxis
427 All Currencies [Domain] Member currency:AllCurrenciesDomain
428 CHF [Member] Member currency:CHF
429 EUR [Member] Member currency:EUR
430 USD [Member] Member currency:USD
431 Cash and cash equivalent [Line Items] LineItems aciu:CashAndCashEquivalentLineItems
432 Cash and cash equivalents [Abstract] Abstract ifrs-full:CashAbstract
433 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
434 Translation rate into CHF Concept (Decimal) As Of ifrs-full:ClosingForeignExchangeRate
435 Number of deposits in escrow accounts Concept (Integer) For Period aciu:NumberOfEscrowDepositAccounts
436 Deposits in escrow accounts Concept (Monetary) As Of Debit ifrs-full:NoncurrentRestrictedCashAndCashEquivalents
437 090600 - Disclosure - Prepaid expenses and accrued income (Details) Network

*

*

http://acimume.com/role/PrepaidExpensesAndAccruedIncomeDetails
438 Prepaid Expenses and Accrued Income [Table] Table

*

*

aciu:PrepaidExpensesAndAccruedIncomeTable
439 Types of contracts [axis] Axis ifrs-full:TypesOfContractsAxis
440 Types of contracts [member] Member ifrs-full:TypesOfContractsMember
441 Biogen [Member] Member aciu:CollaborationAgreementOf2016BiogenMember
442 Janssen [Member] Member aciu:CollaborationAgreementOf2014JanssenPharmaceuticalsMember
443 Prepaid Expenses and Accrued Income [Line Items] LineItems aciu:PrepaidExpensesAndAccruedIncomeLineItems
444 Prepaid expenses Concept (Monetary) As Of Debit ifrs-full:CurrentPrepayments
445 Accrued income Concept (Monetary) As Of Debit ifrs-full:CurrentContractAssets
446 Total Concept (Monetary) As Of Debit ifrs-full:CurrentPrepaymentsAndCurrentAccruedIncome
447 Percentage of accrued income Concept (Percent) As Of aciu:PercentageOfAccruedIncome
448 090700 - Disclosure - Other current receivables (Details) Network

*

*

http://acimume.com/role/OtherCurrentReceivablesDetails
449 Disclosure of other current receivables [Table] Table

*

*

aciu:DisclosureOfOtherCurrentReceivablesTable
450 Range [axis] Axis ifrs-full:RangeAxis
451 Ranges [member] Member ifrs-full:RangesMember
452 Top of Range [Member] Member ifrs-full:TopOfRangeMember
453 Disclosure of other current receivables [Line Items] LineItems aciu:DisclosureOfOtherCurrentReceivablesLineItems
454 Other current receivables [abstract] Abstract ifrs-full:TradeAndOtherReceivablesAbstract
455 Other receivables Concept (Monetary) As Of Debit ifrs-full:OtherCurrentReceivables
456 Swiss VAT Concept (Monetary) As Of Debit ifrs-full:CurrentValueAddedTaxReceivables
457 Withholding tax Concept (Monetary) As Of Debit ifrs-full:CurrentReceivablesFromTaxesOtherThanIncomeTax
458 Total Concept (Monetary) As Of Debit aciu:CurrentReceivablesClassifiedAsOtherAndValueAddedAndWithholdingTaxes
459 Maturity period of assets Concept (xbrli:durationItemType) For Period aciu:PeriodOfMaturityReceivablesFairValueCarryingAmount
460 090800 - Disclosure - Share capital (Details) Network

*

*

http://acimume.com/role/ShareCapitalDetails
461 Disclosure of classes of share capital [table] Table

*

*

ifrs-full:DisclosureOfClassesOfShareCapitalTable
462 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
463 Equity [Member] Member ifrs-full:EquityMember
464 Share Capital [Member] Member ifrs-full:IssuedCapitalMember
465 Share Premium [Member] Member ifrs-full:SharePremiumMember
466 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
467 Share Capital [member] Member ifrs-full:ClassesOfShareCapitalMember
468 Common Shares [Member] Member ifrs-full:OrdinarySharesMember
469 Disclosure of classes of share capital [line items] LineItems ifrs-full:DisclosureOfClassesOfShareCapitalLineItems
470 Capital structure [Abstract] Abstract ifrs-full:DisclosureOfClassesOfShareCapitalAbstract
471 Balance, beginning of period Concept (Monetary) As Of Credit ifrs-full:Equity
472 Balance, beginning of period (in shares) Concept (Shares) As Of ifrs-full:NumberOfSharesOutstanding
473 Issuance of Shares - Incentive Plans Concept (Monetary) For Period Credit aciu:IncreaseThroughSharesIssuedUnderIncentivePlans
474 Issuance of shares - incentive plans (in shares) Concept (Shares) For Period aciu:IncreaseInNumberOfOrdinarySharesIssuedUnderIncentivePlans
475 Issuance of Shares - Public Offering (net of transaction costs) Concept (Monetary) For Period aciu:IncreaseInEquityThroughIssueOfSharesUnderPublicOffering
476 Issuance of shares - Public Offering (net of transaction costs) (in shares) Concept (Shares) For Period aciu:IncreaseInNumberOfOrdinarySharesIssuedUnderPublicOffering
477 Balance, end of period Concept (Monetary) As Of Credit ifrs-full:Equity
478 Balance, end of period (in shares) Concept (Shares) As Of ifrs-full:NumberOfSharesOutstanding
479 Nominal value per share (in CHF per share) Concept (Share) As Of ifrs-full:ParValuePerShare
480 090802 - Disclosure - Share capital, Preferred Shares (Details) Network

*

*

http://acimume.com/role/ShareCapitalPreferredSharesDetails
481 Disclosure of classes of share capital [table] Table

*

*

ifrs-full:DisclosureOfClassesOfShareCapitalTable
482 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
483 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
484 Preferred Shares [Member] Member ifrs-full:PreferenceSharesMember
485 Preferred Shares Series E [Member] Member aciu:PreferenceSharesSeriesEMember
486 Disclosure of classes of share capital [line items] LineItems ifrs-full:DisclosureOfClassesOfShareCapitalLineItems
487 Preferred Shares [Abstract] Abstract aciu:PreferredSharesAbstract
488 Number of preferred shares classes outstanding Concept (Integer) For Period aciu:NumberOfClassesOfPreferredStock
489 Conversion ratio of perferred shares to common shares Concept (Pure) For Period aciu:ConvertibleSharesConversionRatio
490 Number of separate capital increases Concept (Integer) For Period aciu:NumberOfCapitalIncreases
491 Percentage of shares outstanding owned by Preferred shareholders Concept (Percent) For Period aciu:PercentageOfSharesOutstandingHeldByPreferenceStockOwners
492 Term of equity financing Concept (xbrli:durationItemType) For Period aciu:TermOfEquityFinancingPreferredStock
493 Number of votes entitled for each preferred share Concept (Integer) For Period aciu:VotingRightsNumberOfVotesPerShareHeld
494 Dividends paid Concept (Monetary) For Period Debit ifrs-full:DividendsPaidOrdinaryShares
495 Nominal value per share (in CHF per share) Concept (Share) As Of ifrs-full:ParValuePerShare
496 Private placement shares issued (in shares) Concept (Shares) For Period aciu:IncreaseDecreaseInNumberOfPreferredSharesIssued
497 Private placement share price (in dollars per share) Concept (Share) As Of aciu:SharePricePrivatePlacementSaleOfStock
498 Subscription amount Concept (Monetary) As Of Credit aciu:ShareSubscriptionAmount
499 090804 - Disclosure - Share capital, Initial Public Offering and Follow-On Offerings (Details) Network

*

*

http://acimume.com/role/ShareCapitalInitialPublicOfferingAndFollowonOfferingsDetails
500 Disclosure of classes of share capital [table] Table

*

*

ifrs-full:DisclosureOfClassesOfShareCapitalTable
501 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
502 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
503 Initial Public Offering [Member] Member aciu:InitialPublicOfferingMember
504 Over-Allotment [Member] Member aciu:OptionForOverAllotmentMember
505 Common Shares [Member] Member ifrs-full:OrdinarySharesMember
506 First Subscription Rights [Member] Member aciu:FirstSubscriptionRightsMember
507 Second Subscription Rights [Member] Member aciu:SecondSubscriptionRightsMember
508 Disclosure of classes of share capital [line items] LineItems ifrs-full:DisclosureOfClassesOfShareCapitalLineItems
509 Initial Public Offering (IPO) and Follow-On Offerings [Abstract] Abstract aciu:InitialPublicOfferingAndFollowOnOfferingsAbstract
510 Shares issued (in shares) Concept (Shares) For Period ifrs-full:IncreaseDecreaseInNumberOfOrdinarySharesIssued
511 Share price (in dollars per share) Concept (Share) As Of aciu:ShareIssuedPricePerShare
512 Gross proceeds received Concept (Monetary) For Period Debit ifrs-full:ProceedsFromIssueOfOrdinaryShares
513 Proceeds from public offerings of common shares, net of underwriting fees Concept (Monetary) For Period Debit aciu:ProceedsFromIssuingSharesNetOfUnderwritingFees
514 Number of offerings Concept (Integer) For Period aciu:NumberOfOfferings
515 Increase in share premium Concept (Monetary) For Period Credit aciu:IncreaseDecreaseToSharePremiumThroughIssuanceOfEquity
516 Net underwriting fees and transaction costs Concept (Monetary) For Period Debit ifrs-full:ShareIssueRelatedCost
517 Net proceeds Concept (Monetary) For Period Credit aciu:ProceedsFromIssueOfOrdinarySharesNetIssuanceCosts
518 090806 - Disclosure - Share capital, Shelf Registration Statement (Details) Network

*

*

http://acimume.com/role/ShareCapitalShelfRegistrationStatementDetails
519 Disclosure of classes of share capital [table] Table

*

*

ifrs-full:DisclosureOfClassesOfShareCapitalTable
520 Range [axis] Axis ifrs-full:RangeAxis
521 Ranges [member] Member ifrs-full:RangesMember
522 Top of Range [Member] Member ifrs-full:TopOfRangeMember
523 Disclosure of classes of share capital [line items] LineItems ifrs-full:DisclosureOfClassesOfShareCapitalLineItems
524 Shelf Registration Statement [Abstract] Abstract aciu:ShelfRegistrationStatementAbstract
525 Shares authorized under Shelf Registration Statement (in shares) Concept (Shares) As Of aciu:ShelfRegistrationStatementSharesAuthorized
526 Gross proceeds received Concept (Monetary) For Period Debit ifrs-full:ProceedsFromIssueOfOrdinaryShares
527 Additional proceeds from Shelf Registration Statement Concept (Monetary) For Period Debit aciu:PotentialAdditionalProceedsSaleOfEquityInstrumentsShelfRegistrationStatement
528 090900 - Disclosure - Trade payables, accrued liabilities and deferred income (Details) Network

*

*

http://acimume.com/role/TradePayablesAccruedLiabilitiesAndDeferredIncomeDetails
529 Deferred income [Table] Table

*

*

aciu:DeferredIncomeTable
530 Types of contracts [axis] Axis ifrs-full:TypesOfContractsAxis
531 Types of contracts [member] Member ifrs-full:TypesOfContractsMember
532 Biogen [Member] Member aciu:CollaborationAgreementOf2016BiogenMember
533 Deferred income [Line Items] LineItems aciu:DeferredIncomeLineItems
534 Deferred income [Abstract] Abstract ifrs-full:AccrualsAndDeferredIncomeAbstract
535 Deferred income Concept (Monetary) As Of Credit ifrs-full:CurrentContractLiabilities
536 091000 - Disclosure - Debt obligation (Details) Network

*

*

http://acimume.com/role/DebtObligationDetails
537 Long term financing obligation [Table] Table

*

*

aciu:LongTermFinancingObligationTable
538 Types of contracts [axis] Axis ifrs-full:TypesOfContractsAxis
539 Types of contracts [member] Member ifrs-full:TypesOfContractsMember
540 Grants, LuMind Research Down Syndrome Foundation [Member] Member aciu:GrantsLuMindResearchDownSyndromeFoundationMember
541 Debt obligation [Line Items] LineItems aciu:LongTermFinancingObligationLineItems
542 Debt obligation [Abstract] Abstract ifrs-full:BorrowingsAbstract
543 Funding commitment Concept (Monetary) As Of Credit aciu:FundingCommitment
544 Reimbursement percentage of funding commitment Concept (Percent) For Period aciu:ReimbursementPercentageOfFundingCommitment
545 Number of installments Concept (Integer) For Period aciu:DebtInstrumentNumberOfInstallments
546 Percentage of additional interest on total repayment Concept (Percent) For Period aciu:PercentageOfAdditionalInterestOnTotalRepayment
547 Gain on extinguishment of debt Concept (Monetary) For Period Credit aciu:GainLossOnExtinguishmentOfDebt
548 Finance receivable Concept (Monetary) As Of Debit ifrs-full:NoncurrentLoansAndReceivables
549 Short-term debt obligation Concept (Monetary) As Of Credit ifrs-full:CurrentFinancialLiabilities
550 Long-term debt obligation Concept (Monetary) As Of Credit ifrs-full:NoncurrentFinancialLiabilities
551 091100 - Disclosure - Revenues, Changes in Contract Assets and Liabilities (Details) Network

*

*

http://acimume.com/role/RevenuesChangesInContractAssetsAndLiabilitiesDetails
552 Implied Table Table

*

*

implied:Table
553 Revenues [Abstract] Abstract ifrs-full:RevenueAbstract
554 Accrued income, beginning balance Concept (Monetary) As Of Debit ifrs-full:CurrentContractAssets
555 Accrued income, additions Concept (Monetary) For Period Debit aciu:ContractAssetsAdditions
556 Accrued income, deductions Concept (Monetary) For Period Credit aciu:ContractAssetsDeductions
557 Accrued income, ending balance Concept (Monetary) As Of Debit ifrs-full:CurrentContractAssets
558 Deferred income, beginning balance Concept (Monetary) As Of Credit ifrs-full:CurrentContractLiabilities
559 Deferred revenue, additions Concept (Monetary) For Period Credit aciu:ContractLiabilitiesAddition
560 Deferred revenue, deductions Concept (Monetary) For Period Debit aciu:ContractLiabilitiesDeductions
561 Deferred income, ending balance Concept (Monetary) As Of Credit ifrs-full:CurrentContractLiabilities
562 091102 - Disclosure - Revenues, Recognized Revenues (Details) Network

*

*

http://acimume.com/role/RevenuesRecognizedRevenuesDetails
563 Implied Table Table

*

*

implied:Table
564 Revenues [Abstract] Abstract ifrs-full:RevenueAbstract
565 Amounts included in the contract liability at the beginning of the period Concept (Monetary) For Period Credit ifrs-full:RevenueThatWasIncludedInContractLiabilityBalanceAtBeginningOfPeriod
566 091104 - Disclosure - Revenues, Contract Revenue Attributable to Licensing Arrangements (Details) Network

*

*

http://acimume.com/role/RevenuesContractRevenueAttributableToLicensingArrangementsDetails
567 Disclosure of disaggregation of revenue from contracts with customers [table] Table

*

*

ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable
568 Types of contracts [axis] Axis ifrs-full:TypesOfContractsAxis
569 Types of contracts [member] Member ifrs-full:TypesOfContractsMember
570 Collaboration and License Revenue [Member] Member aciu:CollaborationAndLicenseRevenueAgreementsMember
571 Genentech [Member] Member aciu:CollaborationAgreementOf2012GenentechMember
572 Janssen [Member] Member aciu:CollaborationAgreementOf2014JanssenPharmaceuticalsMember
573 Life Molecular Imaging [Member] Member aciu:LicenseAndCollaborationAgreementOf2014LifeMolecularImagingMember
574 Biogen [Member] Member aciu:CollaborationAgreementOf2016BiogenMember
575 Other [Member] Member aciu:OtherAgreementMember
576 Disclosure of disaggregation of revenue from contracts with customers [line items] LineItems ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems
577 Contract Revenue [Abstract] Abstract aciu:ContractRevenueAbstract
578 Total contract revenue Concept (Monetary) For Period Credit ifrs-full:RevenueFromContractsWithCustomers
579 Percentage of contract revenues Concept (Percent) For Period ifrs-full:PercentageOfEntitysRevenue
580 091106 - Disclosure - Revenues, Anti-Abeta Antibody in AD - 2006 Agreement with Genentech (Details) Network

*

*

http://acimume.com/role/RevenuesAntiabetaAntibodyInAd2006AgreementWithGenentechDetails
581 Disclosure of disaggregation of revenue from contracts with customers [table] Table

*

*

ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable
582 Products and services [axis] Axis ifrs-full:ProductsAndServicesAxis
583 Products and services [member] Member ifrs-full:ProductsAndServicesMember
584 Anti-Abeta Antibody in AD [Member] Member aciu:AntiAbetaAntibodyInADMember
585 Types of contracts [axis] Axis ifrs-full:TypesOfContractsAxis
586 Types of contracts [member] Member ifrs-full:TypesOfContractsMember
587 Collaboration and License Revenue [Member] Member aciu:CollaborationAndLicenseRevenueAgreementsMember
588 2006 Agreement with Genentech [Member] Member aciu:CollaborationAgreementOf2006GenentechMember
589 Range [axis] Axis ifrs-full:RangeAxis
590 Ranges [member] Member ifrs-full:RangesMember
591 Bottom of Range [Member] Member ifrs-full:BottomOfRangeMember
592 Top of Range [Member] Member ifrs-full:TopOfRangeMember
593 Disclosure of disaggregation of revenue from contracts with customers [line items] LineItems ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems
594 Revenues [Abstract] Abstract ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersAbstract
595 Total potential collaboration agreement value Concept (Monetary) As Of Debit aciu:CollaborativeAgreementPotentialValue
596 Period to provide notice of termination of agreement Concept (xbrli:durationItemType) For Period aciu:CollaborativeAgreementNoticeOfContractTerminationPeriod
597 Cumulative payments received Concept (Monetary) As Of Credit aciu:CollaborativeAgreementCumulativePaymentsReceived
598 Milestone payment recognized Concept (Monetary) For Period Credit aciu:CollaborativeAgreementMilestonePaymentRecognized
599 Milestone payment received Concept (Monetary) For Period Credit aciu:CollaborativeAgreementMilestonePaymentReceived
600 Total potential collaboration agreement value remaining Concept (Monetary) As Of Credit ifrs-full:TransactionPriceAllocatedToRemainingPerformanceObligations
601 Up-front consideration received Concept (Monetary) As Of Credit ifrs-full:ContractLiabilities
602 Number of milestone payments received Concept (Integer) For Period aciu:NumberOfMilestonePaymentsReceived
603 Recognized revenues Concept (Monetary) For Period Credit ifrs-full:RevenueFromContractsWithCustomers
604 091108 - Disclosure - Revenues, Anti-Tau Antibody in AD - 2012 Agreement with Genentech (Details) Network

*

*

http://acimume.com/role/RevenuesAntitauAntibodyInAd2012AgreementWithGenentechDetails
605 Disclosure of disaggregation of revenue from contracts with customers [table] Table

*

*

ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable
606 Products and services [axis] Axis ifrs-full:ProductsAndServicesAxis
607 Products and services [member] Member ifrs-full:ProductsAndServicesMember
608 Anti-tau Antibody in AD [Member] Member aciu:AntiTauAntibodyInADMember
609 Types of contracts [axis] Axis ifrs-full:TypesOfContractsAxis
610 Types of contracts [member] Member ifrs-full:TypesOfContractsMember
611 Collaboration and License Revenue [Member] Member aciu:CollaborationAndLicenseRevenueAgreementsMember
612 2012 Agreement with Genentech [Member] Member aciu:CollaborationAgreementOf2012GenentechMember
613 Range [axis] Axis ifrs-full:RangeAxis
614 Ranges [member] Member ifrs-full:RangesMember
615 Bottom of Range [Member] Member ifrs-full:BottomOfRangeMember
616 Top of Range [Member] Member ifrs-full:TopOfRangeMember
617 Disclosure of disaggregation of revenue from contracts with customers [line items] LineItems ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems
618 Revenues [Abstract] Abstract ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersAbstract
619 Total potential collaboration agreement value Concept (Monetary) As Of Debit aciu:CollaborativeAgreementPotentialValue
620 Number of additional indications Concept (Integer) For Period aciu:CollaborativeAgreementNumberOfIndications
621 Period to provide notice of termination of agreement Concept (xbrli:durationItemType) For Period aciu:CollaborativeAgreementNoticeOfContractTerminationPeriod
622 Cumulative payments received Concept (Monetary) As Of Credit aciu:CollaborativeAgreementCumulativePaymentsReceived
623 Milestone payment recognized Concept (Monetary) For Period Credit aciu:CollaborativeAgreementMilestonePaymentRecognized
624 Milestone payment received Concept (Monetary) For Period Credit aciu:CollaborativeAgreementMilestonePaymentReceived
625 Up-front consideration received Concept (Monetary) As Of Credit ifrs-full:ContractLiabilities
626 Total potential collaboration agreement value remaining Concept (Monetary) As Of Credit ifrs-full:TransactionPriceAllocatedToRemainingPerformanceObligations
627 Number of milestone payments received Concept (Integer) For Period aciu:NumberOfMilestonePaymentsReceived
628 Recognized revenues Concept (Monetary) For Period Credit ifrs-full:RevenueFromContractsWithCustomers
629 091110 - Disclosure - Revenues, Tau Vaccine in AD - 2014 Agreement with Janssen Pharmaceuticals (Details) Network

*

*

http://acimume.com/role/RevenuesTauVaccineInAd2014AgreementWithJanssenPharmaceuticalsDetails
630 Disclosure of disaggregation of revenue from contracts with customers [table] Table

*

*

ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable
631 Products and services [axis] Axis ifrs-full:ProductsAndServicesAxis
632 Products and services [member] Member ifrs-full:ProductsAndServicesMember
633 Tau Vaccine in AD [Member] Member aciu:TauVaccineInADMember
634 Types of contracts [axis] Axis ifrs-full:TypesOfContractsAxis
635 Types of contracts [member] Member ifrs-full:TypesOfContractsMember
636 Collaboration and License Revenue [Member] Member aciu:CollaborationAndLicenseRevenueAgreementsMember
637 2014 Agreement with Janssen Pharmaceuticals [Member] Member aciu:CollaborationAgreementOf2014JanssenPharmaceuticalsMember
638 Range [axis] Axis ifrs-full:RangeAxis
639 Ranges [member] Member ifrs-full:RangesMember
640 Bottom of Range [Member] Member ifrs-full:BottomOfRangeMember
641 Top of Range [Member] Member ifrs-full:TopOfRangeMember
642 Disclosure of disaggregation of revenue from contracts with customers [line items] LineItems ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems
643 Revenues [Abstract] Abstract ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersAbstract
644 Total potential collaboration agreement value Concept (Monetary) As Of Debit aciu:CollaborativeAgreementPotentialValue
645 Period to provide notice of termination of agreement Concept (xbrli:durationItemType) For Period aciu:CollaborativeAgreementNoticeOfContractTerminationPeriod
646 Cumulative payments received Concept (Monetary) As Of Credit aciu:CollaborativeAgreementCumulativePaymentsReceived
647 Milestone payment received Concept (Monetary) For Period Credit aciu:CollaborativeAgreementMilestonePaymentReceived
648 Up-front consideration received Concept (Monetary) As Of Credit ifrs-full:ContractLiabilities
649 Total potential collaboration agreement value remaining Concept (Monetary) As Of Credit ifrs-full:TransactionPriceAllocatedToRemainingPerformanceObligations
650 Recognized revenues Concept (Monetary) For Period Credit ifrs-full:RevenueFromContractsWithCustomers
651 091112 - Disclosure - Revenues, Tau-PET imaging agent in AD -2014 Agreement with Life Molecular Imaging (formerly Piramal Imaging SA) (Details) Network

*

*

http://acimume.com/role/RevenuesTaupetImagingAgentInAd2014AgreementWithLifeMolecularImagingFormerlyPiramalImagingSaDetails
652 Disclosure of disaggregation of revenue from contracts with customers [table] Table

*

*

ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable
653 Products and services [axis] Axis ifrs-full:ProductsAndServicesAxis
654 Products and services [member] Member ifrs-full:ProductsAndServicesMember
655 Tau-PET Imaging Agent in AD [Member] Member aciu:TauPETImagingAgentInADMember
656 Types of contracts [axis] Axis ifrs-full:TypesOfContractsAxis
657 Types of contracts [member] Member ifrs-full:TypesOfContractsMember
658 Collaboration and License Revenue [Member] Member aciu:CollaborationAndLicenseRevenueAgreementsMember
659 2014 Agreement with Life Molecular Imaging (formerly Piramal Imaging SA) Imaging [Member] Member aciu:LicenseAndCollaborationAgreementOf2014LifeMolecularImagingMember
660 Range [axis] Axis ifrs-full:RangeAxis
661 Ranges [member] Member ifrs-full:RangesMember
662 Bottom of Range [Member] Member ifrs-full:BottomOfRangeMember
663 Top of Range [Member] Member ifrs-full:TopOfRangeMember
664 Disclosure of disaggregation of revenue from contracts with customers [line items] LineItems ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems
665 Revenues [Abstract] Abstract ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersAbstract
666 Total potential collaboration agreement value Concept (Monetary) As Of Debit aciu:CollaborativeAgreementPotentialValue
667 Period to provide notice of termination of agreement Concept (xbrli:durationItemType) For Period aciu:CollaborativeAgreementNoticeOfContractTerminationPeriod
668 Cumulative payments received Concept (Monetary) As Of Credit aciu:CollaborativeAgreementCumulativePaymentsReceived
669 Milestone payment recognized Concept (Monetary) For Period Credit aciu:CollaborativeAgreementMilestonePaymentRecognized
670 Collaboration contract receivable for clinical milestones Concept (Monetary) As Of Debit aciu:CollaborativeAgreementCollaborationContractReceivableForClinicalMilestones
671 Collaboration contract receivable for regulatory, commercialization and sales milestones Concept (Monetary) As Of Debit aciu:CollaborativeAgreementCollaborationContractReceivableForRegulatoryCommercializationAndSalesMilestones
672 Recognized revenues Concept (Monetary) For Period Credit ifrs-full:RevenueFromContractsWithCustomers
673 091114 - Disclosure - Revenues, Alpha-synuclein and TDP-43 PET Tracers in AD - 2016 Agreement with Biogen (Details) Network

*

*

http://acimume.com/role/RevenuesAlphasynucleinAndTdp43PetTracersInAd2016AgreementWithBiogenDetails
674 Disclosure of disaggregation of revenue from contracts with customers [table] Table

*

*

ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable
675 Products and services [axis] Axis ifrs-full:ProductsAndServicesAxis
676 Products and services [member] Member ifrs-full:ProductsAndServicesMember
677 Alpha-synuclein and TDP-43 PET Tracer in AD [Member] Member aciu:AlphaSynucleinAndTDP43PETTracerInADMember
678 Types of contracts [axis] Axis ifrs-full:TypesOfContractsAxis
679 Types of contracts [member] Member ifrs-full:TypesOfContractsMember
680 Collaboration and License Revenue [Member] Member aciu:CollaborationAndLicenseRevenueAgreementsMember
681 2016 Agreement with Biogen [Member] Member aciu:CollaborationAgreementOf2016BiogenMember
682 Disclosure of disaggregation of revenue from contracts with customers [line items] LineItems ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems
683 Revenues [Abstract] Abstract ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersAbstract
684 Number of performance obligations identified Concept (Integer) For Period aciu:NumberOfPerformanceObligationsIdentified
685 Recognized revenues Concept (Monetary) For Period Credit ifrs-full:RevenueFromContractsWithCustomers
686 Revenue recognition amortization period Concept (xbrli:durationItemType) For Period aciu:RevenueRecognitionAmortizationPeriod
687 091116 - Disclosure - Revenues, Recombinant Protein Therapeutic Candidate -2017 Agreement with Essex Bio-Technology Limited (Details) Network

*

*

http://acimume.com/role/RevenuesRecombinantProteinTherapeuticCandidate2017AgreementWithEssexBiotechnologyLimitedDetails
688 Disclosure of disaggregation of revenue from contracts with customers [table] Table

*

*

ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable
689 Products and services [axis] Axis ifrs-full:ProductsAndServicesAxis
690 Products and services [member] Member ifrs-full:ProductsAndServicesMember
691 Recombinant Protein Therapeutic Candidate [Member] Member aciu:RecombinantProteinTherapeuticCandidateMember
692 Types of contracts [axis] Axis ifrs-full:TypesOfContractsAxis
693 Types of contracts [member] Member ifrs-full:TypesOfContractsMember
694 Collaboration and License Revenue [Member] Member aciu:CollaborationAndLicenseRevenueAgreementsMember
695 2017 agreement, Essex Bio-Technology Limited [Member] Member aciu:CollaborationWithEssexBioTechnologyLimitedMember
696 Disclosure of disaggregation of revenue from contracts with customers [line items] LineItems ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems
697 Revenues [Abstract] Abstract ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersAbstract
698 Period to provide notice of termination of agreement Concept (xbrli:durationItemType) For Period aciu:CollaborativeAgreementNoticeOfContractTerminationPeriod
699 Period for initial contract Concept (xbrli:durationItemType) For Period aciu:PeriodForInitialContract
700 Period for initial research plan Concept (xbrli:durationItemType) For Period aciu:PeriodForInitialResearchPlan
701 Recognized revenues Concept (Monetary) For Period Credit ifrs-full:RevenueFromContractsWithCustomers
702 Total potential collaboration agreement value remaining Concept (Monetary) As Of Credit ifrs-full:TransactionPriceAllocatedToRemainingPerformanceObligations
703 091118 - Disclosure - Revenues, 2015 Grant from the Michael J. Fox Foundation (Details) Network

*

*

http://acimume.com/role/Revenues2015GrantFromMichaelJFoxFoundationDetails
704 Disclosure of disaggregation of revenue from contracts with customers [table] Table

*

*

ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable
705 Products and services [axis] Axis ifrs-full:ProductsAndServicesAxis
706 Products and services [member] Member ifrs-full:ProductsAndServicesMember
707 FIH Study in H1 2019 [Member] Member aciu:FirstInHumanStudyPositronEmissionTomographyPETTracerForParkinsonSDiseaseMember
708 Types of contracts [axis] Axis ifrs-full:TypesOfContractsAxis
709 Types of contracts [member] Member ifrs-full:TypesOfContractsMember
710 Grant revenue [Member] Member aciu:GrantRevenueMember
711 Grant from Michael J. Fox Foundation [Member] Member aciu:GrantsMichaelJFoxFoundationMember
712 Disclosure of disaggregation of revenue from contracts with customers [line items] LineItems ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems
713 Revenues [Abstract] Abstract ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersAbstract
714 Number of milestones to achieve Concept (Integer) For Period aciu:NumberOfMilestonesToAchieve
715 Period of performance and development Concept (xbrli:durationItemType) For Period aciu:PeriodOfPerformanceAndDevelopment
716 Number of performance obligations identified Concept (Integer) For Period aciu:NumberOfPerformanceObligationsIdentified
717 Total potential collaboration agreement value Concept (Monetary) As Of Debit aciu:CollaborativeAgreementPotentialValue
718 Recognized revenues Concept (Monetary) For Period Credit ifrs-full:RevenueFromContractsWithCustomers
719 091200 - Disclosure - Expenses by category (Details) Network

*

*

http://acimume.com/role/ExpensesByCategoryDetails
720 Implied Table Table

*

*

implied:Table
721 Expenses by category [Abstract] Abstract aciu:ExpensesByCategoryAbstract
722 Research and Development [Abstract] Abstract aciu:ResearchAndDevelopmentExpensesAbstract
723 Operating expenses Concept (Monetary) For Period Debit aciu:ResearchAndDevelopmentExpenseAllocationOperatingExpense
724 Payroll expenses Concept (Monetary) For Period Debit aciu:ResearchAndDevelopmentExpenseAllocationWagesAndSalaries
725 Share-based compensation Concept (Monetary) For Period Debit aciu:ResearchAndDevelopmentExpenseAllocationExpenseFromShareBasedPaymentTransactionsWithEmployees
726 Total research and development expenses Concept (Monetary) For Period Debit ifrs-full:ResearchAndDevelopmentExpense
727 General and Administration [Abstract] Abstract ifrs-full:SellingGeneralAndAdministrativeExpenseAbstract
728 Operating expenses Concept (Monetary) For Period Debit aciu:GeneralAndAdministrativeExpenseAllocationOperatingExpense
729 Payroll expenses Concept (Monetary) For Period Debit aciu:GeneralAndAdministrativeExpenseAllocationWagesAndSalaries
730 Share-based compensation Concept (Monetary) For Period Debit aciu:GeneralAndAdministrativeExpenseAllocationExpenseFromShareBasedPaymentTransactionsWithEmployees
731 Total general and administrative expenses Concept (Monetary) For Period Debit ifrs-full:SellingGeneralAndAdministrativeExpense
732 Financial Result, net [Abstract] Abstract aciu:FinancialResultNetAbstract
733 Interest income/ (expense) Concept (Monetary) For Period Credit ifrs-full:InterestRevenueExpense
734 Foreign currency remeasurement gain/(loss), net Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss
735 Other finance income/(expense) Concept (Monetary) For Period Credit ifrs-full:OtherFinanceIncomeCost
736 Finance result, net Concept (Monetary) For Period Credit ifrs-full:FinanceIncomeCost
737 091300 - Disclosure - Related-party transactions (Details) Network

*

*

http://acimume.com/role/RelatedpartyTransactionsDetails
738 Implied Table Table

*

*

implied:Table
739 Related-party transactions [Abstract] Abstract ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesAbstract
740 Number of individuals, Board of Directors Concept (Integer) For Period aciu:NumberOfPersonsKeyManagementBoardOfDirectors
741 Number of individuals, Executive Management Concept (Integer) For Period aciu:NumberOfPersonsKeyManagementExecutiveManagement
742 Short-term employee benefits Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationShorttermEmployeeBenefits
743 Post-employment benefits Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationPostemploymentBenefits
744 Share-based compensation Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationSharebasedPayment
745 Total Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensation
746 Number of shares purchased under subscription rights offering by related party (in shares) Concept (Shares) For Period aciu:NumberOfCommonSharesSoldRelatedPartyTransactions
747 091400 - Disclosure - Income taxes (Details) Network

*

*

http://acimume.com/role/IncomeTaxesDetails
748 Implied Table Table

*

*

implied:Table
749 Income taxes [Abstract] Abstract ifrs-full:MajorComponentsOfTaxExpenseIncomeAbstract
750 Deferred tax assets Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssets
751 Deferred tax liabilities Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilities
752 Income tax expense reconciled to Income / (loss) [Abstract] Abstract ifrs-full:ReconciliationOfAccountingProfitMultipliedByApplicableTaxRatesAbstract
753 Loss before income tax Concept (Monetary) For Period Credit ifrs-full:AccountingProfit
754 Tax benefit calculated at the statutory rate of 20.6% (20.5% for 2017 and 21% for 2016) Concept (Monetary) For Period Debit ifrs-full:TaxExpenseIncomeAtApplicableTaxRate
755 Permanent differences Concept (Monetary) For Period Credit ifrs-full:TaxEffectOfRevenuesExemptFromTaxation2011
756 Effect of unrecognized carry forward tax loss Concept (Monetary) For Period Credit ifrs-full:TaxBenefitArisingFromPreviouslyUnrecognisedTaxLossTaxCreditOrTemporaryDifferenceOfPriorPeriodUsedToReduceCurrentTaxExpense
757 Effect of unused tax losses and tax offsets not recognized as deferred tax assets Concept (Monetary) For Period Credit ifrs-full:TaxBenefitArisingFromPreviouslyUnrecognisedTaxLossTaxCreditOrTemporaryDifferenceOfPriorPeriodUsedToReduceDeferredTaxExpense
758 Effective income tax rate benefit / (expense) Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
759 Corporate tax rate Concept (Percent) For Period ifrs-full:ApplicableTaxRate
760 091402 - Disclosure - Income taxes, Unrecognized Deductible Temporary Differences, Unused Tax Losses and Unused Tax Credits (Details) Network

*

*

http://acimume.com/role/IncomeTaxesUnrecognizedDeductibleTemporaryDifferencesUnusedTaxLossesAndUnusedTaxCreditsDetails
761 Disclosure of temporary difference, unused tax losses and unused tax credits [table] Table

*

*

ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable
762 Temporary difference, unused tax losses and unused tax credits [axis] Axis ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis
763 Temporary difference, unused tax losses and unused tax credits [member] Member ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember
764 Tax Losses [Member] Member ifrs-full:UnusedTaxLossesMember
765 Deductible Temporary Differences Related to the Retirement Benefit Plan [Member] Member ifrs-full:UnusedTaxCreditsMember
766 Maturity [axis] Axis ifrs-full:MaturityAxis
767 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
768 Loss Expiry, December 31, 2018 [Member] Member ifrs-full:NotLaterThanOneYearMember
769 Loss Expiry, December 31, 2019 [Member] Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
770 Loss Expiry, December 31, 2020 [Member] Member ifrs-full:LaterThanTwoYearsAndNotLaterThanThreeYearsMember
771 Loss Expiry, December 31, 2021 [Member] Member ifrs-full:LaterThanThreeYearsAndNotLaterThanFourYearsMember
772 Loss Expiry, December 31, 2022 [Member] Member ifrs-full:LaterThanFourYearsAndNotLaterThanFiveYearsMember
773 Loss Expiry, December 31, 2023 [Member] Member aciu:LaterThanFiveYearsAndNotLaterThanSixYearsMember
774 Loss Expiry, December 31, 2024 [Member] Member aciu:LaterThanSixYearsAndNotLaterThanSevenYearsMember
775 Loss Expiry, December 31, 2025 [Member] Member aciu:LaterThanSixYearsAndNotLaterThanEightYearsMember
776 Disclosure of temporary difference, unused tax losses and unused tax credits [line items] LineItems ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems
777 Unrecognized deductible temporary differences, unused tax losses and unused tax credits [Abstract] Abstract ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAbstract
778 Unrecognized deductible temporary differences, unused tax losses and unused tax credits Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssets
779 Unused tax losses and tax credits Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilityAsset
780 Tax losses split by expiry date [Abstract] Abstract aciu:TaxLossesSplitByExpiryDateAbstract
781 Unused tax losses Concept (Monetary) As Of ifrs-full:UnusedTaxLossesForWhichNoDeferredTaxAssetRecognised
782 Increase in tax losses available as an offset Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseInDeferredTaxLiabilityAsset
783 091500 - Disclosure - Retirement benefit plan (Details) Network

*

*

http://acimume.com/role/RetirementBenefitPlanDetails
784 Disclosure of net defined benefit liability (asset) [table] Table

*

*

ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetTable
785 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
786 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
787 Defined Benefit Plan [Member] Member ifrs-full:DefinedBenefitPlansThatShareRisksBetweenEntitiesUnderCommonControlMember
788 Employee [Member] Member aciu:DefinedBenefitsPlanEmployeeMember
789 Employer [Member] Member aciu:DefinedBenefitsPlanEmployerMember
790 Net defined benefit liability (asset) [axis] Axis ifrs-full:NetDefinedBenefitLiabilityAssetAxis
791 Net defined benefit liability (asset) [member] Member ifrs-full:NetDefinedBenefitLiabilityAssetMember
792 Defined Benefit Obligation [Member] Member ifrs-full:PresentValueOfDefinedBenefitObligationMember
793 Disclosure of net defined benefit liability (asset) [line items] LineItems ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetLineItems
794 Contributions paid to the plan by computing percentage in salary Concept (Percent) For Period aciu:DefinedBenefitPlanPercentageOfContribution
795 Defined benefit pension plan amount recognized in balance sheet [Abstract] Abstract ifrs-full:SurplusDeficitInPlanAbstract
796 Defined benefit obligation Concept (Monetary) As Of Credit ifrs-full:DefinedBenefitObligationAtPresentValue
797 Fair value of plan assets Concept (Monetary) As Of Debit ifrs-full:PlanAssetsAtFairValue
798 Total liability Concept (Monetary) As Of Debit ifrs-full:SurplusDeficitInPlan
799 Net pension cost in statement of income [Abstract] Abstract aciu:NetPensionCostInStatementOfIncomeAbstract
800 Service cost Concept (Monetary) For Period Credit ifrs-full:CurrentServiceCostNetDefinedBenefitLiabilityAsset
801 Interest cost Concept (Monetary) For Period Credit aciu:InterestCostNetDefinedBenefitLiabilityAsset
802 Interest income Concept (Monetary) For Period Debit aciu:InterestIncomeNetDefinedBenefitLiabilityAsset
803 Net pension cost Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseInNetDefinedBenefitLiabilityAsset
804 091502 - Disclosure - Retirement benefit plan, Changes in Defined Benefit Obligation (Details) Network

*

*

http://acimume.com/role/RetirementBenefitPlanChangesInDefinedBenefitObligationDetails
805 Disclosure of net defined benefit liability (asset) [table] Table

*

*

ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetTable
806 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
807 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
808 Defined Benefit Plan [Member] Member ifrs-full:DefinedBenefitPlansThatShareRisksBetweenEntitiesUnderCommonControlMember
809 Net defined benefit liability (asset) [axis] Axis ifrs-full:NetDefinedBenefitLiabilityAssetAxis
810 Net defined benefit liability (asset) [member] Member ifrs-full:NetDefinedBenefitLiabilityAssetMember
811 Defined Benefit Obligation [Member] Member ifrs-full:PresentValueOfDefinedBenefitObligationMember
812 Disclosure of net defined benefit liability (asset) [line items] LineItems ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetLineItems
813 Changes in defined benefit obligation [Abstract] Abstract ifrs-full:ChangesInNetDefinedBenefitLiabilityAssetAbstract
814 Defined benefit obligation, beginning of period Concept (Monetary) As Of Credit ifrs-full:LiabilityAssetOfDefinedBenefitPlans
815 Service cost Concept (Monetary) For Period Credit ifrs-full:CurrentServiceCostNetDefinedBenefitLiabilityAsset
816 Interest cost Concept (Monetary) For Period Credit aciu:InterestCostNetDefinedBenefitLiabilityAsset
817 Change in demographic assumptions Concept (Monetary) For Period Debit ifrs-full:ActuarialGainsLossesArisingFromChangesInDemographicAssumptionsNetDefinedBenefitLiabilityAsset
818 Change in financial assumptions Concept (Monetary) For Period Debit ifrs-full:ActuarialGainsLossesArisingFromChangesInFinancialAssumptionsNetDefinedBenefitLiabilityAsset
819 Change in experience assumptions Concept (Monetary) For Period Debit ifrs-full:ActuarialGainsLossesArisingFromExperienceAdjustmentsNetDefinedBenefitLiabilityAsset
820 Benefit payments Concept (Monetary) For Period Debit ifrs-full:PaymentsFromPlanNetDefinedBenefitLiabilityAsset
821 Employees' contributions Concept (Monetary) For Period Debit ifrs-full:ContributionsToPlanByPlanParticipantsNetDefinedBenefitLiabilityAsset
822 Defined benefit obligation, end of period Concept (Monetary) As Of Credit ifrs-full:LiabilityAssetOfDefinedBenefitPlans
823 091504 - Disclosure - Retirement benefit plan, Changes in Fair Value of Plan Assets (Details) Network

*

*

http://acimume.com/role/RetirementBenefitPlanChangesInFairValueOfPlanAssetsDetails
824 Disclosure of net defined benefit liability (asset) [table] Table

*

*

ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetTable
825 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
826 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
827 Defined Benefit Plan [Member] Member ifrs-full:DefinedBenefitPlansThatShareRisksBetweenEntitiesUnderCommonControlMember
828 Net defined benefit liability (asset) [axis] Axis ifrs-full:NetDefinedBenefitLiabilityAssetAxis
829 Net defined benefit liability (asset) [member] Member ifrs-full:NetDefinedBenefitLiabilityAssetMember
830 Fair Value of Plan Assets [Member] Member ifrs-full:PlanAssetsMember
831 Maturity [axis] Axis ifrs-full:MaturityAxis
832 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
833 2019 [Member] Member ifrs-full:NotLaterThanOneYearMember
834 Disclosure of net defined benefit liability (asset) [line items] LineItems ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetLineItems
835 Changes in fair value of plan assets [Abstract] Abstract aciu:ChangesInFairValueOfPlanAssetsAbstract
836 Fair value of plan assets, beginning of period Concept (Monetary) As Of Debit ifrs-full:PlanAssetsAtFairValue
837 Interest income Concept (Monetary) For Period Debit aciu:InterestIncomeNetDefinedBenefitLiabilityAsset
838 Employees' contributions Concept (Monetary) For Period Debit ifrs-full:ContributionsToPlanByPlanParticipantsNetDefinedBenefitLiabilityAsset
839 Employer's contributions Concept (Monetary) For Period Debit ifrs-full:ContributionsToPlanByEmployerNetDefinedBenefitLiabilityAsset
840 Benefits payments Concept (Monetary) For Period Debit ifrs-full:PaymentsFromPlanNetDefinedBenefitLiabilityAsset
841 Plan assets gains/(losses) Concept (Monetary) For Period Debit ifrs-full:ReturnOnPlanAssetsNetDefinedBenefitLiabilityAsset
842 Fair value of plan assets, end of period Concept (Monetary) As Of Debit ifrs-full:PlanAssetsAtFairValue
843 Expected contribution by employer to be paid to post-retirement benefit plans Concept (Monetary) For Period Debit ifrs-full:PostemploymentBenefitExpenseDefinedContributionPlans
844 091506 - Disclosure - Retirement benefit plan, Change in Net Defined Benefit Liability (Details) Network

*

*

http://acimume.com/role/RetirementBenefitPlanChangeInNetDefinedBenefitLiabilityDetails
845 Disclosure of net defined benefit liability (asset) [table] Table

*

*

ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetTable
846 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
847 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
848 Defined Benefit Plan [Member] Member ifrs-full:DefinedBenefitPlansThatShareRisksBetweenEntitiesUnderCommonControlMember
849 Disclosure of net defined benefit liability (asset) [line items] LineItems ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetLineItems
850 Change in net defined benefit liability [Abstract] Abstract ifrs-full:ChangesInNetDefinedBenefitLiabilityAssetAbstract
851 Net defined benefit liabilities, beginning of period Concept (Monetary) As Of Credit ifrs-full:LiabilityAssetOfDefinedBenefitPlans
852 Net pension cost through statement of income Concept (Monetary) For Period Credit ifrs-full:PastServiceCostAndGainsLossesArisingFromSettlementsNetDefinedBenefitLiabilityAsset
853 Re-measurement through other comprehensive loss Concept (Monetary) For Period Debit ifrs-full:GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAsset
854 Employer's contribution Concept (Monetary) For Period Debit ifrs-full:ContributionsToPlanByEmployerNetDefinedBenefitLiabilityAsset
855 Net defined benefit liabilities, end of period Concept (Monetary) As Of Credit ifrs-full:LiabilityAssetOfDefinedBenefitPlans
856 091508 - Disclosure - Retirement benefit plan, Change in Other Comprehensive Loss (Details) Network

*

*

http://acimume.com/role/RetirementBenefitPlanChangeInOtherComprehensiveLossDetails
857 Disclosure of net defined benefit liability (asset) [table] Table

*

*

ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetTable
858 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
859 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
860 Defined Benefit Plan [Member] Member ifrs-full:DefinedBenefitPlansThatShareRisksBetweenEntitiesUnderCommonControlMember
861 Net defined benefit liability (asset) [axis] Axis ifrs-full:NetDefinedBenefitLiabilityAssetAxis
862 Net defined benefit liability (asset) [member] Member ifrs-full:NetDefinedBenefitLiabilityAssetMember
863 Change in Other Comprehensive Loss [Member] Member aciu:ChangeInOtherComprehensiveLossDefinedBenefitPlanMember
864 Disclosure of net defined benefit liability (asset) [line items] LineItems ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetLineItems
865 Change in other comprehensive loss [Abstract] Abstract aciu:ChangeInOtherComprehensiveLossAbstract
866 Other comprehensive loss, beginning of period Concept (Monetary) As Of Credit aciu:OtherComprehensiveIncomeLossDefinedBenefitPlanGainLoss
867 Effect of changes in demographic assumptions Concept (Monetary) For Period Debit ifrs-full:ActuarialGainsLossesArisingFromChangesInDemographicAssumptionsNetDefinedBenefitLiabilityAsset
868 Effect of changes in financial assumptions Concept (Monetary) For Period Debit ifrs-full:ActuarialGainsLossesArisingFromChangesInFinancialAssumptionsNetDefinedBenefitLiabilityAsset
869 Effect of changes in experience assumptions Concept (Monetary) For Period Debit ifrs-full:ActuarialGainsLossesArisingFromExperienceAdjustmentsNetDefinedBenefitLiabilityAsset
870 Plan assets gains/(losses) Concept (Monetary) For Period Debit ifrs-full:ReturnOnPlanAssetsNetDefinedBenefitLiabilityAsset
871 Other comprehensive loss, end of period Concept (Monetary) As Of Credit aciu:OtherComprehensiveIncomeLossDefinedBenefitPlanGainLoss
872 Weighted average duration period for defined benefit obligation Concept (Decimal) For Period ifrs-full:WeightedAverageDurationOfDefinedBenefitObligation
873 091510 - Disclosure - Retirement benefit plan, Actuarial Assumptions and Sensitivity Analysis (Details) Network

*

*

http://acimume.com/role/RetirementBenefitPlanActuarialAssumptionsAndSensitivityAnalysisDetails
874 Disclosure of sensitivity analysis for actuarial assumptions [table] Table

*

*

ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsTable
875 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
876 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
877 Defined Benefit Plan [Member] Member ifrs-full:DefinedBenefitPlansThatShareRisksBetweenEntitiesUnderCommonControlMember
878 Actuarial assumptions [axis] Axis ifrs-full:ActuarialAssumptionsAxis
879 Actuarial assumptions [member] Member ifrs-full:ActuarialAssumptionsMember
880 Discount Rate [Member] Member ifrs-full:ActuarialAssumptionOfDiscountRatesMember
881 Future Salary Increase [Member] Member ifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreasesMember
882 Future Pension Cost [Member] Member ifrs-full:ActuarialAssumptionOfExpectedRatesOfPensionIncreasesMember
883 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
884 Risks [member] Member ifrs-full:TypesOfRisksMember
885 +0.5% Increase [Member] Member aciu:PercentageOfReasonablyPossibleIncreaseInActuarialAssumptionMember
886 -0.5% Decrease [Member] Member aciu:PercentageOfReasonablyPossibleDecreaseInActuarialAssumptionMember
887 Disclosure of sensitivity analysis for actuarial assumptions [line items] LineItems ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsLineItems
888 Actuarial assumptions [Abstract] Abstract ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsAbstract
889 Discount rate Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfDiscountRates
890 Rate of future increase in compensations Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreases
891 Rate of future increase in current pensions Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfExpectedRatesOfPensionIncreases
892 Mortality and disability rates Concept (Text/String) For Period aciu:IssuedActuarialTablesSwitzerland
893 Sensitivity analysis [Abstract] Abstract aciu:SensitivityAnalysisActuarialAssumptionsAbstract
894 Percentage increase in actuarial assumption Concept (Percent) As Of ifrs-full:PercentageOfReasonablyPossibleIncreaseInActuarialAssumption
895 Percentage decrease in actuarial assumption Concept (Percent) As Of ifrs-full:PercentageOfReasonablyPossibleDecreaseInActuarialAssumption
896 Defined benefit obligation Concept (Monetary) As Of Credit ifrs-full:LiabilityAssetOfDefinedBenefitPlans
897 Impact on the net defined benefit obligation Concept (Monetary) As Of Credit ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleIncreaseInActuarialAssumption
898 Impact on the net defined benefit obligation Concept (Monetary) As Of Credit ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleDecreaseInActuarialAssumption
899 091600 - Disclosure - Share-based compensation, Plans Outstanding (Details) Network

*

*

http://acimume.com/role/SharebasedCompensationPlansOutstandingDetails
900 Disclosure of terms and conditions of share-based payment arrangement [table] Table

*

*

ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
901 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
902 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
903 Stock Option Plan A [Member] Member aciu:StockOptionPlanAMember
904 Stock Option Plan B [Member] Member aciu:StockOptionPlanBMember
905 Stock Option Plan C1 [Member] Member aciu:StockOptionPlanC1Member
906 2016 Share Option and Incentive Plan [Member] Member aciu:Two016ShareOptionAndIncentivePlanMember
907 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
908 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
909 Executives and Directors [Member] Member ifrs-full:KeyManagementPersonnelOfEntityOrParentMember
910 Employees [Member] Member aciu:EmployeesMember
911 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
912 Share-based plans outstanding [Abstract] Abstract aciu:ShareBasedPlansOutstandingAbstract
913 Number of options awarded (in shares) Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsGrantedInSharebasedPaymentArrangement
914 Vesting conditions Concept (xbrli:durationItemType) For Period aciu:VestingRequirementsForShareBasedPaymentArrangementAwardVestingPeriod
915 Contractual life of options Concept (xbrli:durationItemType) For Period aciu:MaximumTermOfOptionsGrantedForShareBasedPaymentArrangement
916 091602 - Disclosure - Share-based compensation, Weighted Average Exercise Prices (Details) Network

*

*

http://acimume.com/role/SharebasedCompensationWeightedAverageExercisePricesDetails
917 Implied Table Table

*

*

implied:Table
918 Share-based compensation [Abstract] Abstract ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementAbstract
919 Number and weighted average exercise prices of options under the share option programs [Abstract] Abstract ifrs-full:DisclosureOfNumberAndWeightedAverageRemainingContractualLifeOfOutstandingShareOptionsAbstract
920 Number of Options [Abstract] Abstract aciu:NumberOfOptionsAbstract
921 Outstanding at beginning of period (in shares) Concept (Decimal) As Of ifrs-full:NumberOfOutstandingShareOptions
922 Forfeited during the year (in shares) Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsForfeitedInSharebasedPaymentArrangement
923 Cancelled during the year (in shares) Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsExpiredInSharebasedPaymentArrangement
924 Exercised during the year (in shares) Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsExercisedInSharebasedPaymentArrangement
925 Granted during the year (in shares) Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsGrantedInSharebasedPaymentArrangement
926 Outstanding at end of period (in shares) Concept (Decimal) As Of ifrs-full:NumberOfOutstandingShareOptions
927 Exercisable (in shares) Concept (Decimal) As Of ifrs-full:NumberOfShareOptionsExercisableInSharebasedPaymentArrangement
928 Weighted Average Exercise Price [Abstract] Abstract aciu:WeightedAverageExercisePriceAbstract
929 Outstanding at beginning of period (in CHF per share) Concept (Monetary) As Of ifrs-full:WeightedAverageExercisePriceOfShareOptionsOutstandingInSharebasedPaymentArrangement
930 Forfeited during the year (in CHF per share) Concept (Monetary) For Period ifrs-full:WeightedAverageExercisePriceOfShareOptionsForfeitedInSharebasedPaymentArrangement
931 Cancelled during the year (in CHF per share) Concept (Monetary) For Period ifrs-full:WeightedAverageExercisePriceOfShareOptionsExpiredInSharebasedPaymentArrangement
932 Exercised during the year (in CHF per share) Concept (Monetary) For Period ifrs-full:WeightedAverageExercisePriceOfShareOptionsExercisedInSharebasedPaymentArrangement
933 Granted during the year (in CHF per share) Concept (Monetary) For Period ifrs-full:WeightedAverageExercisePriceOfShareOptionsGrantedInSharebasedPaymentArrangement
934 Outstanding at end of period (in CHF per share) Concept (Monetary) As Of ifrs-full:WeightedAverageExercisePriceOfShareOptionsOutstandingInSharebasedPaymentArrangement
935 Exercisable (in CHF per share) Concept (Monetary) As Of ifrs-full:WeightedAverageExercisePriceOfShareOptionsExercisableInSharebasedPaymentArrangement
936 Weighted Average Remaining Term (Years) [Abstract] Abstract aciu:WeightedAverageRemainingAbstract
937 Weighted average remaining term (years) Concept (Decimal) As Of ifrs-full:WeightedAverageRemainingContractualLifeOfOutstandingShareOptions
938 Exercisable Concept (Decimal) As Of aciu:WeightedAverageRemainingContractualLifeOfExercisableShareOptions
939 091604 - Disclosure - Share-based compensation, Outstanding Options, Range of Exercise prices and Expiration Dates (Details) Network

*

*

http://acimume.com/role/SharebasedCompensationOutstandingOptionsRangeOfExercisePricesAndExpirationDatesDetails
940 Disclosure of number and weighted average remaining contractual life of outstanding share options [table] Table

*

*

ifrs-full:DisclosureOfNumberAndWeightedAverageRemainingContractualLifeOfOutstandingShareOptionsTable
941 Ranges of exercise prices for outstanding share options [axis] Axis ifrs-full:RangesOfExercisePricesForOutstandingShareOptionsAxis
942 Ranges of exercise prices for outstanding share options [member] Member ifrs-full:RangesOfExercisePricesForOutstandingShareOptionsMember
943 CHF 0.15 [Member] Member aciu:RangeOfExercisePricesOneMember
944 CHF 9.53 [Member] Member aciu:RangeOfExercisePricesTwoMember
945 USD 8.33 to USD 12.30 [Member] Member aciu:RangeOfExercisePricesThreeMember
946 Range [axis] Axis ifrs-full:RangeAxis
947 Ranges [member] Member ifrs-full:RangesMember
948 Bottom of Range [Member] Member ifrs-full:BottomOfRangeMember
949 Top of Range [Member] Member ifrs-full:TopOfRangeMember
950 Disclosure of number and weighted average remaining contractual life of outstanding share options [line items] LineItems ifrs-full:DisclosureOfNumberAndWeightedAverageRemainingContractualLifeOfOutstandingShareOptionsLineItems
951 Outstanding options, exercise price range and expiry dates [Abstract] Abstract aciu:OutstandingOptionsExercisePriceRangeAndExpiryDatesAbstract
952 Outstanding Options (in shares) Concept (Decimal) As Of ifrs-full:NumberOfOutstandingShareOptions
953 Expiration Dates Concept (Year) For Period aciu:ShareOptionsDateOfExpiry
954 Number of US denominated options granted (in shares) Concept (Decimal) For Period aciu:NumberOfUSDenominatedShareOptionsGrantedInShareBasedPaymentArrangement
955 Exercise price (in CHF/USD per share) Concept (Monetary) For Period ifrs-full:ExercisePriceShareOptionsGranted
956 Weighted average exercise price for options granted (in CHF/USD per share) Concept (Monetary) For Period ifrs-full:WeightedAverageExercisePriceOfShareOptionsGrantedInSharebasedPaymentArrangement
957 Weighted average share price of common share options exercised (in dollars per share) Concept (Monetary) For Period ifrs-full:WeightedAverageExercisePriceOfShareOptionsInSharebasedPaymentArrangementExercisedDuringPeriodAtDateOfExercise
958 091606 - Disclosure - Share-based compensation, Weighted Average Grant date Fair Value and Assumptions (Details) Network

*

*

http://acimume.com/role/SharebasedCompensationWeightedAverageGrantDateFairValueAndAssumptionsDetails
959 Disclosure of range of exercise prices of outstanding share options [table] Table

*

*

ifrs-full:DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsTable
960 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
961 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
962 Former Chief Financial Officer [Member] Member aciu:FormerChiefExecutiveFinancialOfficerMember
963 Range [axis] Axis ifrs-full:RangeAxis
964 Ranges [member] Member ifrs-full:RangesMember
965 Bottom of Range [Member] Member ifrs-full:BottomOfRangeMember
966 Top of Range [Member] Member ifrs-full:TopOfRangeMember
967 Disclosure of range of exercise prices of outstanding share options [line items] LineItems ifrs-full:DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsLineItems
968 Number and weighted average exercise prices of options under the share option programs [Abstract] Abstract ifrs-full:DisclosureOfNumberAndWeightedAverageRemainingContractualLifeOfOutstandingShareOptionsAbstract
969 Weighted average fair value, options granted (in CHF/USD per share) Concept (Monetary) For Period ifrs-full:WeightedAverageSharePriceShareOptionsGranted
970 Weighted average assumptions [Abstract] Abstract aciu:WeightedAverageAssumptionsAbstract
971 Exercise price (in CHF/USD per share) Concept (Monetary) For Period ifrs-full:ExercisePriceShareOptionsGranted
972 Share Price, weighted average (in CHF/USD per share) Concept (Monetary) For Period ifrs-full:WeightedAverageSharePrice
973 Risk free interest rate Concept (Percent) For Period ifrs-full:DescriptionOfRiskFreeInterestRateShareOptionsGranted
974 Expected volatility Concept (Percent) For Period ifrs-full:DescriptionOfExpectedVolatilityShareOptionsGranted
975 Expected term Concept (Decimal) For Period ifrs-full:DescriptionOfOptionLifeShareOptionsGranted
976 Dividend yield Concept (Percent) For Period ifrs-full:ExpectedDividendAsPercentageShareOptionsGranted
977 Share-based compensation [Abstract] Abstract aciu:ShareBasedPaymentArrangementAbstract
978 Expense charged against the income statement Concept (Monetary) For Period Debit ifrs-full:ExpenseFromSharebasedPaymentTransactionsWithEmployees
979 Incremental fair value amount Concept (Monetary) For Period ifrs-full:IncrementalFairValueGrantedModifiedSharebasedPaymentArrangements
980 Forfeited during the year (in shares) Concept (Decimal) For Period ifrs-full:NumberOfOtherEquityInstrumentsForfeitedInSharebasedPaymentArrangement
981 Granted during the year (in shares) Concept (Decimal) For Period ifrs-full:NumberOfInstrumentsOtherEquityInstrumentsGranted
982 Grant date fair value of the replacement award Concept (Monetary) As Of Credit ifrs-full:WeightedAverageFairValueAtMeasurementDateShareOptionsGranted
983 091608 - Disclosure - Share-based compensation, Non-vested Share Awards (Details) Network

*

*

http://acimume.com/role/SharebasedCompensationNonvestedShareAwardsDetails
984 Disclosure of terms and conditions of share-based payment arrangement [table] Table

*

*

ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
985 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
986 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
987 Non-vested Share Awards [Member] Member aciu:RestrictedSharesAndRestrictedShareUnitsMember
988 Restricted Share Awards [Member] Member aciu:RestrictedSharesMember
989 Restricted Stock Units [Member] Member aciu:RestrictedStockUnitsMember
990 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
991 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
992 Directors [Member] Member aciu:BoardOfDirectorsMember
993 Executives [Member] Member aciu:ExecutiveManagementMember
994 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
995 Share-based payment arrangement [Abstract] Abstract aciu:ShareBasedPaymentArrangementAbstract
996 Number of non-vested share awards granted (in shares) Concept (Decimal) For Period ifrs-full:NumberOfInstrumentsOtherEquityInstrumentsGranted
997 Vesting conditions Concept (xbrli:durationItemType) For Period aciu:VestingRequirementsForShareBasedPaymentArrangementAwardVestingPeriod
998 Contractual life of non-vested share awards Concept (xbrli:durationItemType) For Period aciu:MaximumTermOfOtherEquityInstrumentsGrantedForShareBasedPaymentArrangement
999 Number of non-vested shares [Abstract] Abstract aciu:NumberOfNonVestedSharesAbstract
1000 Non-vested (in shares) Concept (Decimal) As Of ifrs-full:NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
1001 Forfeited during the year (in shares) Concept (Decimal) For Period ifrs-full:NumberOfOtherEquityInstrumentsForfeitedInSharebasedPaymentArrangement
1002 Granted during the year (in shares) Concept (Decimal) For Period ifrs-full:NumberOfInstrumentsOtherEquityInstrumentsGranted
1003 Vested during the year Concept (Decimal) For Period ifrs-full:NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement
1004 Non-vested (in shares) Concept (Decimal) As Of ifrs-full:NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
1005 Vested and expected to vest (in shares) Concept (Decimal) As Of aciu:NumberOfOtherEquityInstrumentsVestedAndExpectedToVestInShareBasedPaymentArrangement
1006 Weighted Average grant date fair value [Abstract] Abstract aciu:WeightedAverageExercisePriceAbstract
1007 Non-vested (in CHF per share) Concept (Monetary) As Of ifrs-full:WeightedAverageExercisePriceOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
1008 Forfeited during the year (in CHF per share) Concept (Monetary) For Period ifrs-full:WeightedAverageExercisePriceOfOtherEquityInstrumentsForfeitedInSharebasedPaymentArrangement
1009 Granted during the year (in CHF per share) Concept (Monetary) For Period ifrs-full:WeightedAverageExercisePriceOfOtherEquityInstrumentsGrantedInSharebasedPaymentArrangement
1010 Vested during the year (in CHF per share) Concept (Monetary) For Period ifrs-full:WeightedAverageExercisePriceOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement
1011 Non-vested (in CHF per share) Concept (Monetary) As Of ifrs-full:WeightedAverageExercisePriceOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
1012 Vested and expected to vest (in CHF per share) Concept (Monetary) As Of aciu:WeightedAverageExercisePriceOfOtherEquityInstrumentsVestedAndExpectedToVestInShareBasedPaymentArrangement
1013 091700 - Disclosure - Commitments and contingencies (Details) Network

*

*

http://acimume.com/role/CommitmentsAndContingenciesDetails
1014 Disclosure of information about commitments and contingencies [Table] Table

*

*

aciu:DisclosureOfInformationAboutCommitmentsAndContingenciesTable
1015 Maturity [axis] Axis ifrs-full:MaturityAxis
1016 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1017 Within One Year [Member] Member ifrs-full:NotLaterThanOneYearMember
1018 Between One and Three Years [Member] Member ifrs-full:LaterThanOneYearAndNotLaterThanThreeYearsMember
1019 Between Three and Five Years [Member] Member ifrs-full:LaterThanThreeYearsAndNotLaterThanFiveYearsMember
1020 More Than Five Years [Member] Member ifrs-full:LaterThanFiveYearsMember
1021 Disclosure of information about commitments and contingencies [Line Items] LineItems aciu:DisclosureOfInformationAboutCommitmentsAndContingenciesLineItems
1022 Commitments and contingencies [Abstract] Abstract aciu:CommitmentsAbstract
1023 External research projects Concept (Monetary) As Of Credit aciu:ProvisionsResearchContracts
1024 Notice period for cancellation of rental contract Concept (xbrli:durationItemType) For Period aciu:RentalContractPeriodForNoticeOfCancellation
1025 Rent expense Concept (Monetary) For Period Debit ifrs-full:RentalExpense
1026 Rental contracts amount Concept (Monetary) As Of Credit ifrs-full:LeaseLiabilities
1027 Commitments Concept (Monetary) As Of Credit ifrs-full:Provisions
1028 091800 - Disclosure - Earnings per share (Details) Network

*

*

http://acimume.com/role/EarningsPerShareDetails
1029 Implied Table Table

*

*

implied:Table
1030 Earnings per share [Abstract] Abstract ifrs-full:EarningsPerShareAbstract
1031 Net income / (loss) attributable to owners of the Company Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
1032 Earnings per share (EPS) [Abstract] Abstract ifrs-full:ProfitLossAttributableToOrdinaryEquityHoldersOfParentEntityAbstract
1033 Basic and diluted, income / (loss) for the period attributable to equity holders (in CHF per share) Concept (Share) For Period ifrs-full:BasicAndDilutedEarningsLossPerShare
1034 Weighted-average number of shares used to compute EPS basic and diluted (in shares) Concept (Shares) For Period ifrs-full:AdjustedWeightedAverageShares
1035 Antidilutive securities [Abstract] Abstract aciu:AntidilutiveSecuritiesAbstract
1036 Share options issued and outstanding (in-the-money) (in shares) Concept (Shares) For Period aciu:DilutiveEffectOfShareOptionsIssuedAndOutstanding
1037 Restricted share awards subject to future vesting (in shares) Concept (Shares) For Period aciu:DilutiveEffectOfRestrictedShareAwardsSubjectToFutureVesting
1038 Total (in shares) Concept (Shares) For Period ifrs-full:DilutiveEffectOfShareOptionsOnNumberOfOrdinaryShares
1039 091900 - Disclosure - Financial instruments and risk management (Details) Network

*

*

http://acimume.com/role/FinancialInstrumentsAndRiskManagementDetails
1040 Disclosure of nature and extent of risks arising from financial instruments [table] Table

*

*

ifrs-full:DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsTable
1041 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
1042 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
1043 Long-term Financial Assets [Member] Member aciu:LongTermFinancialAssetsMember
1044 Other Current Receivables [Member] Member aciu:OtherReceivablesMember
1045 Short-term Financial Assets [Member] Member aciu:ShortTermFinancialAssetsMember
1046 Cash and Cash Equivalents [Member] Member aciu:CashOnHandAndCashEquivalentsMember
1047 Categories of financial liabilities [axis] Axis ifrs-full:CategoriesOfFinancialLiabilitiesAxis
1048 Financial liabilities, category [member] Member ifrs-full:FinancialLiabilitiesCategoryMember
1049 Short-term Debt Obligation [Member] Member aciu:ShortTermDebtObligationMember
1050 Long-Term Debt Obligation [Member] Member aciu:LongTermFinancialLiabilitiesMember
1051 Trade and Other Payables [Member] Member aciu:TradeAndOtherPayablesMember
1052 Accrued Expenses [Member] Member aciu:AccruedExpensesMember
1053 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
1054 Risks [member] Member ifrs-full:TypesOfRisksMember
1055 Foreign Currency Exchange Risk [Member] Member ifrs-full:CurrencyRiskMember
1056 Credit Risk [Member] Member ifrs-full:CreditRiskMember
1057 Liquidity Risk [Member] Member ifrs-full:LiquidityRiskMember
1058 Interest Rate [member] Member ifrs-full:InterestRateRiskMember
1059 Range [axis] Axis ifrs-full:RangeAxis
1060 Ranges [member] Member ifrs-full:RangesMember
1061 Bottom of Range [Member] Member ifrs-full:BottomOfRangeMember
1062 Top of Range [Member] Member ifrs-full:TopOfRangeMember
1063 Disclosure of nature and extent of risks arising from financial instruments [line items] LineItems ifrs-full:DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsLineItems
1064 Financial assets and liabilities [Abstract] Abstract aciu:FinancialAssetsAndLiabilitiesAbstract
1065 Financial assets Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
1066 Financial liabilities Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilities
1067 Financial risks [Abstract] Abstract aciu:FinancialRisksAbstract
1068 Gain (loss) in finance income/(expense), net Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss
1069 Percentage exchange rate strengthened Concept (Percent) As Of aciu:ClosingForeignExchangeRateIncrease
1070 Percentage exchange rate weakened Concept (Percent) As Of aciu:ClosingForeignExchangeRateDecrease
1071 Net loss for period decrease, result of foreign exchange rate increase Concept (Monetary) For Period Credit aciu:DecreaseInNetLossForeignExchangeRateIncrease
1072 Net loss for period increase, result of foreign exchange rate decrease Concept (Monetary) For Period Debit aciu:IncreaseInNetLossForeignExchangeRateDecrease
1073 Percentage of increase in interest rates Concept (Percent) For Period aciu:PercentageOfIncreaseInInterestRates
1074 Percentage of decrease in interest rates Concept (Percent) For Period aciu:PercentageOfDecreaseInInterestRates
1075 Net loss for period increase, due to increase in interest rate Concept (Monetary) For Period Debit aciu:IncreaseInNetLossInterestRateIncrease
1076 Net loss for period decrease, due to decrease in interest rate Concept (Monetary) For Period Credit aciu:DecreaseInNetLossInterestRateDecrease
1077 Number of financial institutions holding cash and cash equivalents and short-term financial assets Concept (Integer) For Period aciu:NumberOfFinancialInstitutionsHoldingCashAndCashEquivalentsAndShortTermFinancialAssets
1078 Expected debt obligation payoff period Concept (xbrli:durationItemType) For Period aciu:BorrowingsDebtExtinguishmentPeriod
1079 Cash position rolling forecast period Concept (xbrli:durationItemType) For Period aciu:LiquidityManagementRollingForecastPeriod
1080 092100 - Disclosure - Quarterly Financial Results (Unaudited) (Details) Network

*

*

http://acimume.com/role/QuarterlyFinancialResultsUnauditedDetails
1081 Implied Table Table

*

*

implied:Table
1082 Quarterly Financial Results (Unaudited) [Abstract] Abstract aciu:QuarterlyFinancialResultsUnauditedAbstract
1083 Revenues [Abstract] Abstract ifrs-full:RevenueAbstract
1084 Contract revenue Concept (Monetary) For Period Credit ifrs-full:RevenueFromContractsWithCustomers
1085 Total revenue Concept (Monetary) For Period Credit ifrs-full:Revenue
1086 Operating expenses [Abstract] Abstract aciu:ExpensesOperatingAbstract
1087 Research & development expenses Concept (Monetary) For Period Debit ifrs-full:ResearchAndDevelopmentExpense
1088 General & administrative expenses Concept (Monetary) For Period Debit ifrs-full:SellingGeneralAndAdministrativeExpense
1089 Total operating expenses Concept (Monetary) For Period Debit ifrs-full:OperatingExpense
1090 Operating loss Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromOperatingActivities
1091 Finance result, net Concept (Monetary) For Period Credit ifrs-full:FinanceIncomeCost
1092 Loss before tax Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
1093 Income tax expense Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
1094 Loss for the period Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
1095 Net income/(loss) per share (EPS) [Abstract] Abstract ifrs-full:EarningsPerShareAbstract
1096 Basic (in CHF per share) Concept (Share) For Period ifrs-full:BasicEarningsLossPerShare
1097 Diluted (in CHF per share) Concept (Share) For Period ifrs-full:DilutedEarningsLossPerShare
1098 Basic and diluted (in CHF per share) Concept (Share) For Period ifrs-full:BasicAndDilutedEarningsLossPerShare
1099 Weighted-average number of shares used to compute EPS [Abstract] Abstract ifrs-full:WeightedAverageSharesAndAdjustedWeightedAverageSharesAbstract
1100 Basic (in shares) Concept (Shares) For Period ifrs-full:WeightedAverageShares
1101 Diluted (in shares) Concept (Shares) For Period ifrs-full:AdjustedWeightedAverageShares
1102 Basic and diluted (in shares) Concept (Shares) For Period ifrs-full:AdjustedWeightedAverageShares
1103 092200 - Disclosure - Post balance sheet events (Details) Network

*

*

http://acimume.com/role/PostBalanceSheetEventsDetails
1104 Disclosure of non-adjusting events after reporting period [table] Table

*

*

ifrs-full:DisclosureOfNonadjustingEventsAfterReportingPeriodTable
1105 Non-adjusting events after reporting period [axis] Axis ifrs-full:NonadjustingEventsAfterReportingPeriodAxis
1106 Non-adjusting events after reporting period [member] Member ifrs-full:NonadjustingEventsMember
1107 Subsequent Event [Member] Member aciu:SubsequentEventsMember
1108 Types of contracts [axis] Axis ifrs-full:TypesOfContractsAxis
1109 Types of contracts [member] Member ifrs-full:TypesOfContractsMember
1110 Collaboration Agreement with Lilly [Member] Member aciu:CollaborationAgreementWithLillyMember
1111 Range [axis] Axis ifrs-full:RangeAxis
1112 Ranges [member] Member ifrs-full:RangesMember
1113 Top of Range [Member] Member ifrs-full:TopOfRangeMember
1114 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
1115 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
1116 Convertible Note Agreement [Member] Member aciu:ConvertibleNoteAgreementMember
1117 Disclosure of non-adjusting events after reporting period [line items] LineItems ifrs-full:DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems
1118 Post balance sheet events [Abstract] Abstract ifrs-full:DisclosureOfNonadjustingEventsAfterReportingPeriodAbstract
1119 Up-front consideration received Concept (Monetary) As Of Credit ifrs-full:ContractLiabilities
1120 Period to provide notice of termination of agreement Concept (xbrli:durationItemType) For Period aciu:CollaborativeAgreementNoticeOfContractTerminationPeriod
1121 Consideration received Concept (Monetary) For Period Debit ifrs-full:ProceedsFromBorrowingsClassifiedAsFinancingActivities
1122 Interest rate Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
1123 Conversion price (in dollars per share) Concept (Share) As Of aciu:ConversionPricePerShare
1124 Number of shares issuable upon conversion (in shares) Concept (Shares) As Of aciu:ConvertibleInstrumentsNumberOfShares

*

*