AETERNA ZENTARIS INC. (SEC Filing Page | XBRL Cloud Viewer | XBRL Instance)

Line Label Object Class Period Type Balance Report ElementName
1 0001000 - Document - Document and Entity Information Network

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 http://www.aezsinc.com/role/DocumentAndEntityInformation
2 Implied Table Table

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3 Document Information [Abstract] Abstract aezs:DocumentInformationAbstract
4 Document Type Concept (Submission Type) For Period dei:DocumentType
5 Amendment Flag Concept (Yes/No) For Period dei:AmendmentFlag
6 Document Period End Date Concept (Date) For Period dei:DocumentPeriodEndDate
7 Document Fiscal Year Focus Concept (Year) For Period dei:DocumentFiscalYearFocus
8 Document Fiscal Period Focus Concept (Fiscal Period) For Period dei:DocumentFiscalPeriodFocus
9 Entity Registrant Name Concept (Text/String) For Period dei:EntityRegistrantName
10 Entity Central Index Key Concept (CIK Number) For Period dei:EntityCentralIndexKey
11 Current Fiscal Year End Date Concept (Month/Day) For Period dei:CurrentFiscalYearEndDate
12 Entity Filer Category Concept (Filer Category) For Period dei:EntityFilerCategory
13 Entity Emerging Growth Company Concept (Yes/No) For Period dei:EntityEmergingGrowthCompany
14 Entity Well-known Seasoned Issuer Concept (Yes/No) For Period dei:EntityWellKnownSeasonedIssuer
15 Entity Current Reporting Status Concept (Yes/No) For Period dei:EntityCurrentReportingStatus
16 Entity Shell Company Concept (Yes/No) For Period dei:EntityShellCompany
17 Entity Common Stock, Shares Outstanding Concept (Shares) As Of dei:EntityCommonStockSharesOutstanding
18 1001000 - Statement - Consolidated Statements of Financial Position Network

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19 Implied Table Table

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20 Statement of financial position [abstract] Abstract ifrs-full:StatementOfFinancialPositionAbstract
21 ASSETS Abstract ifrs-full:AssetsAbstract
22 Current assets Abstract ifrs-full:CurrentAssetsAbstract
23 Cash and cash equivalents (note 7) Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
24 Trade and other receivables (note 8) Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherCurrentReceivables
25 Inventory (note 9) Concept (Monetary) As Of Debit ifrs-full:InventoriesTotal
26 Prepaid expenses and other current assets (note 10) Concept (Monetary) As Of Debit ifrs-full:CurrentPrepaymentsAndOtherCurrentAssets
27 Total current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
28 Restricted cash equivalents (note 11) Concept (Monetary) As Of Debit ifrs-full:RestrictedCashAndCashEquivalents
29 Property, plant and equipment (note 12) Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
30 Deferred tax assets (note 20) Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilityAsset
31 Identifiable intangible assets (note 13) Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsOtherThanGoodwill
32 Other non-current assets Concept (Monetary) As Of Debit ifrs-full:OtherNoncurrentAssets
33 Goodwill (note 14) Concept (Monetary) As Of Debit ifrs-full:Goodwill
34 Total Assets Concept (Monetary) As Of Debit ifrs-full:Assets
35 LIABILITIES Abstract ifrs-full:LiabilitiesAbstract
36 Current liabilities Abstract ifrs-full:CurrentLiabilitiesAbstract
37 Payables and accrued liabilities (note 15) Concept (Monetary) As Of Credit aezs:TradeAndOtherCurrentPayablesExcludingDeferredIncomeClassifiedAsCurrent
38 Provision for restructuring and other costs (note 16) Concept (Monetary) As Of Credit ifrs-full:ShorttermRestructuringProvision
39 Income taxes (note 22) Concept (Monetary) As Of Credit ifrs-full:CurrentTaxLiabilities
40 Current portion of deferred revenues (note 6) Concept (Monetary) As Of Credit ifrs-full:DeferredIncomeClassifiedAsCurrent
41 Total current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
42 Deferred revenues (note 6) Concept (Monetary) As Of Credit ifrs-full:DeferredIncomeClassifiedAsNoncurrent
43 Warrant liability (note 17) Concept (Monetary) As Of Credit ifrs-full:NoncurrentFinancialLiabilitiesAtFairValueThroughProfitOrLoss
44 Employee future benefits (note 18) Concept (Monetary) As Of Credit ifrs-full:NoncurrentProvisionsForEmployeeBenefits
45 Non-current portion of provision for restructuring and other costs (note 16) Concept (Monetary) As Of Credit ifrs-full:OtherLongtermProvisions
46 Total liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
47 SHAREHOLDERS' EQUITY (DEFICIENCY) Abstract ifrs-full:EquityAbstract
48 Share capital (note 19) Concept (Monetary) As Of Credit ifrs-full:IssuedCapital
49 Other capital (note 19) Concept (Monetary) As Of Credit ifrs-full:OtherEquityInterest
50 Deficit Concept (Monetary) As Of Credit ifrs-full:RetainedEarnings
51 Accumulated other comprehensive income Concept (Monetary) As Of Credit ifrs-full:AccumulatedOtherComprehensiveIncome
52 Total shareholders' equity (deficiency) Concept (Monetary) As Of Credit ifrs-full:EquityAttributableToOwnersOfParent
53 Total liabilities and shareholders' equity Concept (Monetary) As Of Credit ifrs-full:EquityAndLiabilities
54 1002000 - Statement - Consolidated Statements of Changes in Shareholders' Equity Network

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55 Statement of changes in equity [table] Table

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 ifrs-full:StatementOfChangesInEquityTable
56 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
57 Equity [member] Member ifrs-full:EquityMember
58 Share capital Member ifrs-full:IssuedCapitalMember
59 Pre-funded warrants Member ifrs-full:ReserveOfEquityComponentOfConvertibleInstrumentsMember
60 Other capital Member ifrs-full:OtherEquityInterestMember
61 Deficit Member ifrs-full:RetainedEarningsMember
62 Accumulated other comprehensive income Member ifrs-full:AccumulatedOtherComprehensiveIncomeMember
63 Statement of changes in equity [line items] LineItems ifrs-full:StatementOfChangesInEquityLineItems
64 Changes in equity [abstract] Abstract ifrs-full:ChangesInEquityAbstract
65 Beginning balance, number of shares (in shares) Concept (Shares) As Of ifrs-full:NumberOfSharesOutstanding
66 Beginning balance Concept (Monetary) As Of Credit ifrs-full:EquityAttributableToOwnersOfParent
67 Net income (loss) Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
68 Other comprehensive income (loss): Abstract ifrs-full:OtherComprehensiveIncomeAbstract
69 Foreign currency translation adjustments Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation
70 Actuarial gain on defined benefit plans (note 18) Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans
71 Comprehensive income (loss) Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
72 Share issuances in connection with a public offering (in shares) Concept (Shares) For Period ifrs-full:IncreaseDecreaseInNumberOfOrdinarySharesIssued
73 Issue of equity Concept (Monetary) For Period Credit ifrs-full:IssueOfEquity
74 Pre-funded warrant issuances in connection with a public offering Concept (Monetary) For Period Credit aezs:IssueOfPreFundedWarrants
75 Share issuances pursuant to the exercise of pre-funded warrants (in shares) Concept (Shares) For Period aezs:IncreaseDecreaseInNumberOfSharesOutstandingIssueOfEquityExerciseOfPreFundedWarrants
76 Share issuances pursuant to the exercise of pre-funded warrants Concept (Monetary) For Period Credit aezs:IncreaseDecreaseThroughExerciseOfPreFundedWarrantsEquity
77 Share issuances in connection with at-the-market drawdowns (in shares) Concept (Shares) For Period aezs:IncreaseDecreaseInNumberOfSharesOutstandingIssueOfEquityAtTheMarketDrawdowns
78 Share issuances in connection with at-the-market drawdowns Concept (Monetary) For Period Credit aezs:IncreaseDecreaseIssueOfEquityAtTheMarketDrawdowns
79 Share-based compensation costs Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughSharebasedPaymentTransactions
80 Ending balance, number of shares (in shares) Concept (Shares) As Of ifrs-full:NumberOfSharesOutstanding
81 Ending balance Concept (Monetary) As Of Credit ifrs-full:EquityAttributableToOwnersOfParent
82 1003000 - Statement - Consolidated Statements of Comprehensive Loss Network

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83 Implied Table Table

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84 Profit or loss [abstract] Abstract ifrs-full:IncomeStatementAbstract
85 Revenues Abstract ifrs-full:RevenueAbstract
86 License fees (note 6) Concept (Monetary) For Period Credit ifrs-full:LicenceFeeIncome
87 Product sales (note 6) Concept (Monetary) For Period Credit ifrs-full:RevenueFromSaleOfGoods
88 Royalty income (note 6) Concept (Monetary) For Period Credit ifrs-full:RevenueFromRoyalties
89 Sales commission and other Concept (Monetary) For Period Credit ifrs-full:OtherRevenue
90 Total revenues Concept (Monetary) For Period Credit ifrs-full:Revenue
91 Cost of sales Concept (Monetary) For Period Debit ifrs-full:CostOfSales
92 Gross income Concept (Monetary) For Period Credit ifrs-full:GrossProfit
93 Operating expenses (note 20) Abstract aezs:OperatingExpenses1Abstract
94 Research and development costs Concept (Monetary) For Period Debit ifrs-full:ResearchAndDevelopmentExpense
95 General and administrative expenses Concept (Monetary) For Period Debit ifrs-full:GeneralAndAdministrativeExpense
96 Selling expenses Concept (Monetary) For Period Debit ifrs-full:SellingExpense
97 Total operating expenses Concept (Monetary) For Period Debit ifrs-full:OperatingExpense
98 Income (loss) from operations Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromOperatingActivities
99 Settlements (note 27) Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnLitigationSettlements
100 Gain (loss) due to changes in foreign currency exchange rates Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss
101 Change in fair value of warrant liability (note 17) Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnFinancialLiabilitiesAtFairValueThroughProfitOrLoss
102 Other finance income Concept (Monetary) For Period Credit ifrs-full:OtherFinanceIncome
103 Net finance income (costs) Concept (Monetary) For Period Credit ifrs-full:FinanceIncomeCost
104 Income (loss) before income taxes Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
105 Income tax (expense) recovery (note 22) Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
106 Net income (loss) Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
107 Other comprehensive income (loss): Abstract ifrs-full:OtherComprehensiveIncomeAbstract
108 Items that may be reclassified subsequently to profit or loss: Abstract ifrs-full:ComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTaxAbstract
109 Foreign currency translation adjustments Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation
110 Items that will not be reclassified to profit or loss: Abstract ifrs-full:ComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTaxAbstract
111 Actuarial gain (loss) on defined benefit plans Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans
112 Comprehensive income (loss) Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
113 Net income (loss) per share (basic) (note 26) (in dollars per share) Concept (Share) For Period ifrs-full:BasicEarningsLossPerShare
114 Net income (loss) per share (diluted) (note 26) (in dollars per share) Concept (Share) For Period ifrs-full:DilutedEarningsLossPerShare
115 Weighted average number of shares outstanding (note 26) Abstract ifrs-full:WeightedAverageSharesAndAdjustedWeightedAverageSharesAbstract
116 Basic (in shares) Concept (Shares) For Period ifrs-full:WeightedAverageShares
117 Diluted (in shares) Concept (Shares) For Period ifrs-full:AdjustedWeightedAverageShares
118 1004000 - Statement - Consolidated Statements of Cash Flows Network

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119 Implied Table Table

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120 Statement of cash flows [abstract] Abstract ifrs-full:StatementOfCashFlowsAbstract
121 Cash flows from operating activities Abstract ifrs-full:CashFlowsFromUsedInOperatingActivitiesAbstract
122 Net income (loss) for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromContinuingOperations
123 Items not affecting cash and cash equivalents: Abstract ifrs-full:AdjustmentsForReconcileProfitLossAbstract
124 Change in fair value of warrant liability (note 17) Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnFinancialLiabilitiesAtFairValueThroughProfitOrLoss
125 Provision for restructuring and other costs (note 16) Concept (Monetary) For Period Credit ifrs-full:ReversalOfProvisionsForCostOfRestructuring
126 Recapture of inventory previously written off Concept (Monetary) For Period Debit ifrs-full:WritedownsReversalsOfInventories
127 Depreciation, amortization and impairment (notes 12 and 13) Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDepreciationAndAmortisationExpenseAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss
128 Deferred income taxes (note 22) Concept (Monetary) For Period Debit ifrs-full:DeferredTaxExpenseIncome
129 Share-based compensation costs Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForSharebasedPayments
130 Employee future benefits (note 18) Concept (Monetary) For Period Debit aezs:AdjustmentsForEmployeeFutureBenefits
131 Amortization of deferred revenues (note 6) Concept (Monetary) For Period Credit aezs:AdjustmentsForAmortizationOfDeferredIncome
132 Foreign exchange (gain) loss on items denominated in foreign currencies Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForUnrealisedForeignExchangeLossesGains
133 Gain on disposal of property, plant and equipment Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForGainLossOnDisposalsPropertyPlantAndEquipment
134 Other non-cash items Concept (Monetary) For Period Debit ifrs-full:OtherAdjustmentsForNoncashItems
135 Transaction cost allocated to warrants issued (note 19) Concept (Monetary) For Period Debit aezs:AdjustmentsForWarrantIssuanceCosts
136 Changes in operating assets and liabilities (note 21) Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseInWorkingCapital
137 Net cash provided by/(used in) operating activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperatingActivities
138 Cash flows from financing activities Abstract ifrs-full:CashFlowsFromUsedInFinancingActivitiesAbstract
139 Proceeds from issuances of common shares, warrants (including pre-funded warrants), net of cash transaction costs of $nil, $250 and $1,107 in 2018, 2017, and 2016, respectively (note 19) Concept (Monetary) For Period Debit ifrs-full:ProceedsFromIssuingShares
140 Proceeds from warrants exercised (note 19) Concept (Monetary) For Period Debit aezs:ProceedsFromIssuanceOfWarrantsContingentUponExercise
141 Net cash provided by financing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInFinancingActivities
142 Cash flows from investing activities Abstract ifrs-full:CashFlowsFromUsedInInvestingActivitiesAbstract
143 Purchase of property, plant and equipment (note 12) Concept (Monetary) For Period Credit ifrs-full:PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities
144 Proceeds for disposals of property, plant and equipment (note 12) Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSalesOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities
145 Change in restricted cash equivalents Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInDecreaseIncreaseInRestrictedCashAndCashEquivalents
146 Net cash provided by (used in) investing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInInvestingActivities
147 Effect of exchange rate changes on cash and cash equivalents Abstract ifrs-full:EffectOfExchangeRateChangesOnCashAndCashEquivalentsAbstract
148 Effect of exchange rate changes on cash and cash equivalents Concept (Monetary) For Period Debit ifrs-full:EffectOfExchangeRateChangesOnCashAndCashEquivalents
149 Net change in cash and cash equivalents Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseInCashAndCashEquivalents
150 Cash and cash equivalents – beginning of year (note 6) Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
151 Cash and cash equivalents – end of year (note 6) Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
152 1004001 - Statement - Consolidated Statements of Cash Flows - Parenthetical Network

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153 Implied Table Table

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154 Statement of cash flows [abstract] Abstract ifrs-full:StatementOfCashFlowsAbstract
155 Payments for share issue costs Concept (Monetary) For Period Credit ifrs-full:PaymentsForShareIssueCosts
156 2101100 - Disclosure - Business overview Network

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157 Implied Table Table

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158 Corporate Information And Statement Of IFRS Compliance [Abstract] Abstract aezs:CorporateInformationAndStatementOfIFRSComplianceAbstract
159 Business overview Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfBasisOfPreparationOfFinancialStatementsExplanatory
160 2104100 - Disclosure - Assessment of liquidity and management's plans Network

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161 Implied Table Table

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162 Corporate Information And Statement Of IFRS Compliance [Abstract] Abstract aezs:CorporateInformationAndStatementOfIFRSComplianceAbstract
163 Assessment of liquidity and management's plans Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfLiquidityRiskExplanatory
164 2107100 - Disclosure - Summary of significant accounting policies Network

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165 Implied Table Table

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166 Corporate Information And Statement Of IFRS Compliance [Abstract] Abstract aezs:CorporateInformationAndStatementOfIFRSComplianceAbstract
167 Summary of significant accounting policies Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSummaryOfSignificantAccountingPoliciesExplanatory
168 2110100 - Disclosure - Critical accounting estimates and judgments Network

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169 Implied Table Table

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170 Accounting Policies, Changes In Accounting Estimates And Errors [Abstract] Abstract aezs:AccountingPoliciesChangesInAccountingEstimatesAndErrorsAbstract
171 Critical accounting estimates and judgments Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfAccountingJudgementsAndEstimatesExplanatory
172 2113100 - Disclosure - Recent accounting pronoucements Network

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173 Implied Table Table

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174 Accounting Policies, Changes In Accounting Estimates And Errors [Abstract] Abstract aezs:AccountingPoliciesChangesInAccountingEstimatesAndErrorsAbstract
175 Recent accounting pronouncements Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretations
176 2116100 - Disclosure - Licensing arrangement Network

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177 Implied Table Table

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178 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
179 Licensing arrangement Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDeferredIncomeExplanatory
180 2119100 - Disclosure - Cash and cash equivalents Network

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181 Implied Table Table

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182 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
183 Cash and cash equivalents Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCashAndCashEquivalentsExplanatory
184 2122100 - Disclosure - Trade and other receivables Network

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185 Implied Table Table

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186 Trade and other receivables [abstract] Abstract ifrs-full:TradeAndOtherReceivablesAbstract
187 Trade and other receivables Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTradeAndOtherReceivablesExplanatory
188 2125100 - Disclosure - Inventory Network

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189 Implied Table Table

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190 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
191 Inventory Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInventoriesExplanatory
192 2128100 - Disclosure - Prepaid expenses and other current assets Network

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193 Implied Table Table

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194 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
195 Prepaid expenses and other current assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfPrepaymentsAndOtherAssetsExplanatory
196 2131100 - Disclosure - Restricted cash equivalents Network

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197 Implied Table Table

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198 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
199 Restricted cash equivalents Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfRestrictedCashAndCashEquivalentsExplanatory
200 2134100 - Disclosure - Property, plant and equipment Network

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201 Implied Table Table

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202 Disclosure of detailed information about property, plant and equipment [abstract] Abstract ifrs-full:DisclosureOfPropertyPlantAndEquipmentAbstract
203 Property, plant and equipment Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfPropertyPlantAndEquipmentExplanatory
204 2137100 - Disclosure - Identifiable intangible assets Network

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205 Implied Table Table

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206 Disclosure of detailed information about intangible assets [abstract] Abstract ifrs-full:DisclosureOfIntangibleAssetsAbstract
207 Identifiable intangible assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfIntangibleAssetsExplanatory
208 2140100 - Disclosure - Goodwill Network

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209 Implied Table Table

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210 Intangible Assets [Abstract] Abstract aezs:IntangibleAssetsAbstract
211 Goodwill Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfGoodwillExplanatory
212 2143100 - Disclosure - Payables and accrued liabilities Network

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213 Implied Table Table

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214 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
215 Payables and accrued liabilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTradeAndOtherPayablesExplanatory
216 2146100 - Disclosure - Provision for restructuring costs and other costs Network

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217 Implied Table Table

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218 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
219 Provision for restructuring costs and other costs Concept (Text Block (HTML)) For Period aezs:RestructuringAndRelatedActivitiesDisclosure1TextBlock
220 2149100 - Disclosure - Warrant liability Network

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221 Implied Table Table

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222 Financial Instruments [Abstract] Abstract aezs:FinancialInstrumentsAbstract
223 Warrant liability Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinancialInstrumentsAtFairValueThroughProfitOrLossExplanatory
224 2155100 - Disclosure - Employee future benefits Network

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225 Implied Table Table

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226 Employee Benefits [Abstract] Abstract aezs:EmployeeBenefitsAbstract
227 Employee future benefits Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEmployeeBenefitsExplanatory
228 2158100 - Disclosure - Share and other capital Network

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229 Implied Table Table

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230 Share Capital, Reserves And Other Equity Interest [Abstract] Abstract aezs:ShareCapitalReservesAndOtherEquityInterestAbstract
231 Share and other capital Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory
232 2161100 - Disclosure - Operating expenses Network

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233 Implied Table Table

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234 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
235 Operating expenses Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherOperatingExpenseExplanatory
236 2164100 - Disclosure - Supplemental disclosure of cash flow information Network

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237 Implied Table Table

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238 Statement of cash flows [abstract] Abstract ifrs-full:StatementOfCashFlowsAbstract
239 Supplemental disclosure of cash flow information Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCashFlowStatementExplanatory
240 2167100 - Disclosure - Income taxes Network

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241 Implied Table Table

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242 Income Taxes [Abstract] Abstract aezs:IncomeTaxesAbstract
243 Income taxes Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfIncomeTaxExplanatory
244 2168100 - Disclosure - Capital disclosures Network

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245 Implied Table Table

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246 Corporate Information And Statement Of IFRS Compliance [Abstract] Abstract aezs:CorporateInformationAndStatementOfIFRSComplianceAbstract
247 Capital disclosures Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalExplanatory
248 2169100 - Disclosure - Financial instruments and financial risk management Network

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249 Implied Table Table

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250 Financial Instruments [Abstract] Abstract aezs:FinancialInstrumentsAbstract
251 Financial instruments and financial risk management Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinancialInstrumentsExplanatory
252 2170100 - Disclosure - Segment information Network

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253 Implied Table Table

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254 Operating Segments [Abstract] Abstract aezs:OperatingSegmentsAbstract
255 Segment information Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEntitysReportableSegmentsExplanatory
256 2171100 - Disclosure - Net income (loss) per share Network

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257 Implied Table Table

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258 Earnings per share [abstract] Abstract ifrs-full:EarningsPerShareAbstract
259 Net income (loss) per share Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEarningsPerShareExplanatory
260 2172100 - Disclosure - Commitments and contingencies Network

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261 Implied Table Table

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262 Other Provisions, Contingent Liabilities and Contingent Assets [Abstract] Abstract aezs:OtherProvisionsContingentLiabilitiesandContingentAssetsAbstract
263 Commitments and contingencies Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCommitmentsAndContingentLiabilitiesExplanatory
264 2173100 - Disclosure - Reclassification on comparative figures Network

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 http://www.aezsinc.com/role/NetIncomeLossPerShareTables
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 http://www.aezsinc.com/role/TradeAndOtherReceivablesDetails
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 http://www.aezsinc.com/role/InventoryDetails
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 http://www.aezsinc.com/role/PrepaidExpensesAndOtherCurrentAssetsDetails
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 http://www.aezsinc.com/role/RestrictedCashEquivalentsDetails
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 ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
533 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
534 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
535 Equipment Member aezs:Equipment1Member
536 Furniture and fixtures Member ifrs-full:FixturesAndFittingsMember
537 Computer equipment Member ifrs-full:ComputerEquipmentMember
538 Leasehold improvements Member ifrs-full:LeaseholdImprovementsMember
539 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
540 Carrying amount [member] Member ifrs-full:CarryingAmountMember
541 Cost Member ifrs-full:GrossCarryingAmountMember
542 Accumulated depreciation Member ifrs-full:AccumulatedDepreciationAndAmortisationMember
543 Disclosure of detailed information about property, plant and equipment [line items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
544 Reconciliation of changes in property, plant and equipment [abstract] Abstract ifrs-full:ReconciliationOfChangesInPropertyPlantAndEquipmentAbstract
545 Beginning balance of property, plant and equipment Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
546 Additions Concept (Monetary) For Period Debit ifrs-full:AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment
547 Disposals / Retirements Concept (Monetary) For Period Credit ifrs-full:DisposalsAndRetirementsPropertyPlantAndEquipment
548 Reclassifications Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughOtherChangesPropertyPlantAndEquipment
549 Depreciation expense Concept (Monetary) For Period ifrs-full:DepreciationPropertyPlantAndEquipment
550 Impact of foreign exchange rate changes Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesPropertyPlantAndEquipment
551 Ending balance of property, plant and equipment Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
552 2434403 - Disclosure - Property, plant and equipment - Narrative (Details) Network

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553 Disclosure of detailed information about property, plant and equipment [table] Table

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554 Income Statement Location [Axis] Axis aezs:IncomeStatementLocation1Axis
555 Income Statement Location [Domain] Member aezs:IncomeStatementLocation1Domain
556 R&D Member aezs:ResearchAndDevelopmentExpense1Member
557 General and Administrative Member aezs:GeneralandAdministrativeExpense1Member
558 Selling Member aezs:SellingandMarketingExpense1Member
559 Disclosure of detailed information about property, plant and equipment [line items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
560 Depreciation Concept (Monetary) For Period ifrs-full:DepreciationPropertyPlantAndEquipment
561 2437402 - Disclosure - Identifiable intangible assets (Details) Network

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 http://www.aezsinc.com/role/IdentifiableIntangibleAssetsDetails
562 Disclosure of detailed information about intangible assets [table] Table

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 ifrs-full:DisclosureOfIntangibleAssetsTable
563 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
564 Carrying amount [member] Member ifrs-full:CarryingAmountMember
565 Cost Member ifrs-full:AtCostMember
566 Accumulated amortization Member ifrs-full:AccumulatedDepreciationAndAmortisationMember
567 Disclosure of detailed information about intangible assets [line items] LineItems ifrs-full:DisclosureOfIntangibleAssetsLineItems
568 Reconciliation of changes in intangible assets other than goodwill [abstract] Abstract ifrs-full:ReconciliationOfChangesInIntangibleAssetsOtherThanGoodwillAbstract
569 Balances – Beginning of the year Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsOtherThanGoodwill
570 Additions Concept (Monetary) For Period Debit ifrs-full:AdditionsOtherThanThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill
571 Impairment (loss) reversal Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossIntangibleAssetsOtherThanGoodwill
572 Recurring amortization expense Concept (Monetary) For Period ifrs-full:AmortisationIntangibleAssetsOtherThanGoodwill
573 Impact of foreign exchange rate changes Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesIntangibleAssetsOtherThanGoodwill
574 Balances – End of the year Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsOtherThanGoodwill
575 2440402 - Disclosure - Goodwill (Details) Network

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 http://www.aezsinc.com/role/GoodwillDetails
576 Disclosure of reconciliation of changes in intangible assets and goodwill [table] Table

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 ifrs-full:DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillTable
577 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
578 Carrying amount [member] Member ifrs-full:CarryingAmountMember
579 Cost Member ifrs-full:GrossCarryingAmountMember
580 Accumulated impairment loss Member ifrs-full:AccumulatedImpairmentMember
581 Disclosure of reconciliation of changes in intangible assets and goodwill [line items] LineItems ifrs-full:DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillLineItems
582 Reconciliation of changes in goodwill [abstract] Abstract ifrs-full:ReconciliationOfChangesInGoodwillAbstract
583 Beginning balance Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsAndGoodwill
584 Impact of foreign exchange rate changes Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesIntangibleAssetsAndGoodwill
585 Ending balance Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsAndGoodwill
586 2443402 - Disclosure - Payables and accrued liabilities (Details) Network

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 http://www.aezsinc.com/role/PayablesAndAccruedLiabilitiesDetails
587 Disclosure of non-adjusting events after reporting period [table] Table

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 ifrs-full:DisclosureOfNonadjustingEventsAfterReportingPeriodTable
588 Non-adjusting events after reporting period [axis] Axis ifrs-full:NonadjustingEventsAfterReportingPeriodAxis
589 Non-adjusting events after reporting period [member] Member ifrs-full:NonadjustingEventsMember
590 2019 Insurance Member aezs:A2019InsuranceMember
591 Disclosure of non-adjusting events after reporting period [line items] LineItems ifrs-full:DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems
592 Trade accounts payable Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayablesToTradeSuppliers
593 Accrued research and development costs Concept (Monetary) As Of Credit aezs:AccruedResearchAndDevelopmentCosts
594 Salaries, employment taxes and benefits Concept (Monetary) As Of Credit ifrs-full:ShorttermEmployeeBenefitsAccruals
595 Financing of insurance premiums Concept (Monetary) As Of Credit aezs:AccruedInsuranceCurrent
596 Other accrued liabilities Concept (Monetary) As Of Credit ifrs-full:OtherCurrentPayables
597 Payables and accrued liabilities Concept (Monetary) As Of Credit aezs:TradeAndOtherCurrentPayablesExcludingDeferredIncomeClassifiedAsCurrent
598 Insurance premium, interest rate Concept (Percent) For Period aezs:InsurancePremiumInterestRate
599 Insurance premium, number of monthly payments Concept (Integer) For Period aezs:InsurancePremiumNumberOfMonthlyPayments
600 2446403 - Disclosure - Provision for restructuring costs and other costs - Schedule of Restructuring Reserve (Details) Network

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 http://www.aezsinc.com/role/ProvisionForRestructuringCostsAndOtherCostsScheduleOfRestructuringReserveDetails
601 Disclosure of other provisions [table] Table

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 ifrs-full:DisclosureOfOtherProvisionsTable
602 Restructuring Plan [Axis] Axis aezs:RestructuringPlan1Axis
603 Restructuring Plan [Domain] Member aezs:RestructuringPlan1Domain
604 Other provision Member aezs:OtherProvisionMember
605 Cetrotide(R) onerous contracts Member aezs:CentrotideOnerousContractsProvisionMember
606 2017 German Restructuring: onerous lease Member aezs:OnerousLeaseContractsProvisionMember
607 2017 German Restructuring: severance Member aezs:OnerousSeveranceProvisionMember
608 Disclosure of other provisions [line items] LineItems ifrs-full:DisclosureOfOtherProvisionsLineItems
609 Restructuring Reserve [Roll Forward] Abstract aezs:RestructuringReserve1RollForward
610 Beginning balance Concept (Monetary) As Of Credit ifrs-full:RestructuringProvision
611 Provision recognized Concept (Monetary) For Period Credit ifrs-full:NewProvisionsOtherProvisions
612 Utilization of provision Concept (Monetary) For Period Debit ifrs-full:ProvisionUsedOtherProvisions
613 Change in the provision Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughTransfersAndOtherChangesOtherProvisions
614 Unwinding of discount and impact of foreign exchange rate changes Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesOtherProvisions
615 Ending balance Concept (Monetary) As Of Credit ifrs-full:RestructuringProvision
616 Less: current portion Concept (Monetary) As Of Credit ifrs-full:ShorttermRestructuringProvision
617 Non-current portion Concept (Monetary) As Of Credit ifrs-full:LongtermRestructuringProvision
618 2449402 - Disclosure - Warrant liability - Schedule of Changes In Warrant Liability (Details) Network

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 http://www.aezsinc.com/role/WarrantLiabilityScheduleOfChangesInWarrantLiabilityDetails
619 Disclosure of detailed information about financial instruments [table] Table

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 ifrs-full:DisclosureOfFinancialInstrumentsTable
620 Classes of liabilities [axis] Axis ifrs-full:ClassesOfLiabilitiesAxis
621 Liabilities Member ifrs-full:LiabilitiesMember
622 Warrant liability Member aezs:WarrantLiabilityMember
623 Disclosure of detailed information about financial instruments [line items] LineItems ifrs-full:DisclosureOfFinancialInstrumentsLineItems
624 Reconciliation of changes in fair value measurement, liabilities [abstract] Abstract ifrs-full:ReconciliationOfChangesInFairValueMeasurementLiabilitiesAbstract
625 Balance – Beginning of the year Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLoss
626 Share purchase warrants issued during the year (note 19) Concept (Monetary) For Period Credit ifrs-full:IssuesFairValueMeasurementLiabilities
627 Share purchase warrants exercised during the year Concept (Monetary) For Period Debit ifrs-full:SettlementsFairValueMeasurementLiabilities
628 Change in fair value of share purchase warrants Concept (Monetary) For Period ifrs-full:GainsLossesRecognisedInProfitOrLossFairValueMeasurementLiabilities
629 Balance - End of the year Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLoss
630 2449403 - Disclosure - Warrant liability - Summary of Share Purchase Warrant Activity (Details) Network

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 http://www.aezsinc.com/role/WarrantLiabilitySummaryOfSharePurchaseWarrantActivityDetails
631 Disclosure of detailed information about financial instruments [table] Table

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 ifrs-full:DisclosureOfFinancialInstrumentsTable
632 Shareholders' Equity Class [Axis] Axis aezs:ShareholdersEquityClass1Axis
633 Shareholders' Equity Class [Domain] Member aezs:ShareholdersEquityClassDomain
634 Warrants Not Settleable In Cash Member aezs:WarrantsNotSettleableInCash1Member
635 Class Of Warrant Or Right [Axis] Axis aezs:ClassOfWarrantOrRight1Axis
636 Class Of Warrant Or Right [Domain] Member aezs:ClassOfWarrantOrRight1Domain
637 Series A Warrants Member aezs:SeriesAWarrantsMember
638 Disclosure of detailed information about financial instruments [line items] LineItems ifrs-full:DisclosureOfFinancialInstrumentsLineItems
639 Share Purchase Warrants Outstanding Abstract aezs:SharePurchaseWarrantsOutstandingRollForward
640 Warrants outstanding, beginning of period (in shares) Concept (Shares) As Of aezs:ClassOfWarrantOrRightOutstanding1
641 Warrants issued during period (in shares) Concept (Shares) For Period aezs:ClassOfWarrantOrRightIssued
642 Warrants exercised during period (in shares) Concept (Shares) For Period aezs:ClassOfWarrantOrRightExercised
643 Warrants expired during period (in shares) Concept (Shares) For Period aezs:ClassOfWarrantOrRightExpired
644 Warrants outstanding, end of period (in shares) Concept (Shares) As Of aezs:ClassOfWarrantOrRightOutstanding1
645 Share Purchase Warrants Outstanding, Weighted Average Exercise Price Abstract aezs:SharePurchaseWarrantsOutstandingWeightedAverageExercisePriceRollForward
646 Weighted average exercise price, beginning of period (in usd per share) Concept (Share) As Of aezs:ClassOfWarrantOrRightOutstandingWeightedAverageExercisePriceOfWarrantsOrRights
647 Weighted average exercise price, issued during period (in usd per share) Concept (Share) For Period aezs:ClassOfWarrantOrRightWeightedAverageExercisePriceOfWarrantsorRightsGrantedDuringPeriod
648 Weighted average exercise price, exercised during period( in usd per share) Concept (Share) For Period aezs:ClassOfWarrantOrRightWeightedAverageExercisePriceOfWarrantsOrRightsExercisedDuringPeriod
649 Weighted average exercise price, expired during period (in usd per share) Concept (Share) For Period aezs:ClassOfWarrantOrRightWeightedAverageExercisePriceOfWarrantsOrRightsExpiredDuringPeriod
650 Weighted average exercise price, end of period (in usd per share) Concept (Share) As Of aezs:ClassOfWarrantOrRightOutstandingWeightedAverageExercisePriceOfWarrantsOrRights
651 Shares issued upon exercise (in shares) Concept (Shares) For Period aezs:WarrantOrRightSharesIssuedUponExercise
652 2449404 - Disclosure - Warrant liability - Summary of Warrants Outstanding and Exercisable (Details) Network

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 http://www.aezsinc.com/role/WarrantLiabilitySummaryOfWarrantsOutstandingAndExercisableDetails
653 Disclosure of range of exercise prices of outstanding share options [table] Table

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 ifrs-full:DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsTable
654 Ranges Of Exercise Prices For Class Of Warrants or Rights Axis aezs:RangesOfExercisePricesForClassOfWarrantsOrRightsAxis
655 Class Of Warrant Or Rights, Exercise Price Range [Domain] Member aezs:ClassOfWarrantOrRightsExercisePriceRangeDomain
656 Exercise Price Range One Member aezs:ExercisePriceRangeOne1Member
657 Exercise Price Range Two Member aezs:ExercisePriceRangeTwo1Member
658 Exercise Price Range Three Member aezs:ExercisePriceRangeThree1Member
659 Disclosure of range of exercise prices of outstanding share options [line items] LineItems ifrs-full:DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsLineItems
660 Exercise price (in usd per share) Concept (Share) As Of aezs:ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights
661 Number of warrants outstanding (in shares) Concept (Shares) As Of aezs:ClassOfWarrantOrRightOutstanding1
662 Weighted average remaining contractual life (years) Concept (xbrli:durationItemType) For Period aezs:ClassofWarrantorRightWeightedAverageRemainingContractualLife
663 2449405 - Disclosure - Warrant liability - Schedule Of Inputs And Assumptions Used In Determining The Fair Value Of Warrants Outstanding (Details) Network

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 http://www.aezsinc.com/role/WarrantLiabilityScheduleOfInputsAndAssumptionsUsedInDeterminingFairValueOfWarrantsOutstandingDetails
664 Disclosure of range of exercise prices of outstanding share options [table] Table

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*

 ifrs-full:DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsTable
665 Levels of fair value hierarchy [axis] Axis ifrs-full:LevelsOfFairValueHierarchyAxis
666 All levels of fair value hierarchy [member] Member ifrs-full:AllLevelsOfFairValueHierarchyMember
667 Level 2 of fair value hierarchy Member ifrs-full:Level2OfFairValueHierarchyMember
668 Classes of liabilities [axis] Axis ifrs-full:ClassesOfLiabilitiesAxis
669 Liabilities Member ifrs-full:LiabilitiesMember
670 Warrant liability Member aezs:WarrantLiabilityMember
671 Valuation techniques used in fair value measurement [axis] Axis ifrs-full:ValuationTechniquesUsedInFairValueMeasurementAxis
672 Valuation techniques [member] Member ifrs-full:ValuationTechniquesMember
673 Option pricing model Member ifrs-full:OptionPricingModelMember
674 Class Of Warrant Or Right [Axis] Axis aezs:ClassOfWarrantOrRight1Axis
675 Class Of Warrant Or Right [Domain] Member aezs:ClassOfWarrantOrRight1Domain
676 March 2015 Series A Warrants Member aezs:March2015SeriesAWarrantsMember
677 December 2015 Warrants Member aezs:December2015WarrantsMember
678 November 2016 Warrants Member aezs:November2016WarrantsMember
679 Disclosure of range of exercise prices of outstanding share options [line items] LineItems ifrs-full:DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsLineItems
680 Number of equivalent shares (in shares) Concept (Shares) As Of aezs:NumberOfEquivalentSharesLiabilities
681 Market-value per share price (in usd per share) Concept (Share) As Of aezs:FairValueInputsMarketValuePerShare
682 Weighted average exercise price (in usd per share) Concept (Share) As Of aezs:FairValueInputsWeightedAverageExercisePriceLiabilities
683 Risk-free annual interest rate Concept (Percent) For Period aezs:FairValueAssumptionsRiskFreeInterestRate1
684 Expected volatility Concept (Percent) For Period aezs:FairValueAssumptionsExpectedVolatilityRate1
685 Expected life (years) Concept (xbrli:durationItemType) For Period aezs:FairValueAssumptionsExpectedTerm1
686 Expected dividend yield Concept (Percent) For Period aezs:FairValueAssumptionsExpectedDividendRate1
687 2455402 - Disclosure - Employee future benefits - Changes in Accrued Benefit Obligations (Details) Network

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 http://www.aezsinc.com/role/EmployeeFutureBenefitsChangesInAccruedBenefitObligationsDetails
688 Disclosure of net defined benefit liability (asset) [table] Table

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*

 ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetTable
689 Net defined benefit liability (asset) [axis] Axis ifrs-full:NetDefinedBenefitLiabilityAssetAxis
690 Net defined benefit liability (asset) [member] Member ifrs-full:NetDefinedBenefitLiabilityAssetMember
691 Present value of defined benefit obligation Member ifrs-full:PresentValueOfDefinedBenefitObligationMember
692 Retirement Plan Funding Status [Axis] Axis aezs:RetirementPlanFundingStatus1Axis
693 Retirement Plan Funding Status [Domain] Member aezs:RetirementPlanFundingStatus1Domain
694 Unfunded Plan Member aezs:UnfundedPlan1Member
695 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
696 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
697 Pension benefit plans Member aezs:PensionBenefitPlansMember
698 Other benefit plans Member aezs:OtherBenefitPlansMember
699 Disclosure of net defined benefit liability (asset) [line items] LineItems ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetLineItems
700 Balances – Beginning of the year Concept (Monetary) As Of Credit ifrs-full:LiabilityAssetOfDefinedBenefitPlans
701 Current service cost Concept (Monetary) For Period Credit ifrs-full:CurrentServiceCostNetDefinedBenefitLiabilityAsset
702 Interest cost Concept (Monetary) For Period Credit ifrs-full:InterestExpenseIncomeNetDefinedBenefitLiabilityAsset
703 Actuarial (gain) loss arising from changes in financial assumptions Concept (Monetary) For Period Debit ifrs-full:ActuarialGainsLossesArisingFromChangesInFinancialAssumptionsNetDefinedBenefitLiabilityAsset
704 Benefits paid Concept (Monetary) For Period Debit ifrs-full:PaymentsInRespectOfSettlementsNetDefinedBenefitLiabilityAsset
705 Impact of foreign exchange rate changes Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughChangesInForeignExchangeRatesNetDefinedBenefitLiabilityAsset
706 Balances – End of the year Concept (Monetary) As Of Credit ifrs-full:LiabilityAssetOfDefinedBenefitPlans
707 Amounts recognized: Abstract ifrs-full:ChangesInNetDefinedBenefitLiabilityAssetAbstract
708 Amounts recognized in net loss Concept (Monetary) For Period Debit ifrs-full:PostemploymentBenefitExpenseDefinedBenefitPlans
709 Amounts recognized in other comprehensive loss Concept (Monetary) For Period Debit ifrs-full:GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAsset
710 2455403 - Disclosure - Employee future benefits - Narrative (Details) Network

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 http://www.aezsinc.com/role/EmployeeFutureBenefitsNarrativeDetails
711 Disclosure of defined benefit plans [table] Table

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 ifrs-full:DisclosureOfDefinedBenefitPlansTable
712 Net defined benefit liability (asset) [axis] Axis ifrs-full:NetDefinedBenefitLiabilityAssetAxis
713 Net defined benefit liability (asset) [member] Member ifrs-full:NetDefinedBenefitLiabilityAssetMember
714 Present value of defined benefit obligation Member ifrs-full:PresentValueOfDefinedBenefitObligationMember
715 Retirement Plan Funding Status [Axis] Axis aezs:RetirementPlanFundingStatus1Axis
716 Retirement Plan Funding Status [Domain] Member aezs:RetirementPlanFundingStatus1Domain
717 Unfunded Plan Member aezs:UnfundedPlan1Member
718 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
719 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
720 Pension benefit plans Member aezs:PensionBenefitPlansMember
721 Disclosure of defined benefit plans [line items] LineItems ifrs-full:DisclosureOfDefinedBenefitPlansLineItems
722 Cumulative amount of actuarial net losses recognized Concept (Monetary) For Period Debit ifrs-full:GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAsset
723 Discount rate Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfDiscountRates
724 Weighted average duration of the defined benefit obligation Concept (Decimal) For Period ifrs-full:WeightedAverageDurationOfDefinedBenefitObligation
725 Defined contribution plan expenses Concept (Monetary) For Period Debit ifrs-full:PostemploymentBenefitExpenseDefinedContributionPlans
726 Net defined benefit liability (asset) Concept (Monetary) As Of Credit ifrs-full:LiabilityAssetOfDefinedBenefitPlans
727 2455404 - Disclosure - Employee future benefits - Actuarial Assumptions (Details) Network

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 http://www.aezsinc.com/role/EmployeeFutureBenefitsActuarialAssumptionsDetails
728 Disclosure of defined benefit plans [table] Table

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 ifrs-full:DisclosureOfDefinedBenefitPlansTable
729 Gender [Axis] Axis aezs:GenderAxis
730 Gender [Domain] Member aezs:GenderDomain
731 Male Member aezs:MaleMember
732 Female Member aezs:FemaleMember
733 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
734 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
735 Pension benefit plans Member aezs:PensionBenefitPlansMember
736 Other benefit plans Member aezs:OtherBenefitPlansMember
737 Disclosure of defined benefit plans [line items] LineItems ifrs-full:DisclosureOfDefinedBenefitPlansLineItems
738 Discount rate Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfDiscountRates
739 Pension benefits increase Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfExpectedRatesOfPensionIncreases
740 Rate of compensation increase Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreases
741 Average remaining life expectancy at the end of the reporting period Concept (xbrli:durationItemType) For Period aezs:ActuarialAssumptionOfRemainingLifeExpectancyOfThoseRetiringAtTheEndOfTheReportingPeriod
742 Average remaining life expectancy of those retiring twenty years after the end of the reporting period Concept (xbrli:durationItemType) For Period aezs:ActuarialAssumptionOfAverageRemainingLifeExpectancyOfThoseRetiringTwentyYearsAfterTheEndOfTheReportingPeriod
743 2455405 - Disclosure - Employee future benefits - Undiscounted Defined Pensions Benefits to be Paid (Details) Network

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 http://www.aezsinc.com/role/EmployeeFutureBenefitsUndiscountedDefinedPensionsBenefitsToBePaidDetails
744 Disclosure of defined benefit plans [table] Table

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 ifrs-full:DisclosureOfDefinedBenefitPlansTable
745 Maturity [axis] Axis ifrs-full:MaturityAxis
746 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
747 2019 Member ifrs-full:NotLaterThanOneYearMember
748 2020 Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
749 2021 Member ifrs-full:LaterThanTwoYearsAndNotLaterThanThreeYearsMember
750 2022 Member ifrs-full:LaterThanThreeYearsAndNotLaterThanFourYearsMember
751 2023 Member ifrs-full:LaterThanFourYearsAndNotLaterThanFiveYearsMember
752 Thereafter Member ifrs-full:LaterThanFiveYearsMember
753 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
754 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
755 Pension benefit plans Member aezs:PensionBenefitPlansMember
756 Disclosure of defined benefit plans [line items] LineItems ifrs-full:DisclosureOfDefinedBenefitPlansLineItems
757 Total undiscounted defined pension benefits expected to be paid Concept (Monetary) As Of Credit ifrs-full:DefinedBenefitObligationAtPresentValue
758 2455406 - Disclosure - Employee future benefits - Impact On Pension Benefit Obligation Based On Assumptions (Details) Network

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 http://www.aezsinc.com/role/EmployeeFutureBenefitsImpactOnPensionBenefitObligationBasedOnAssumptionsDetails
759 Disclosure of sensitivity analysis for actuarial assumptions [table] Table

*

*

 ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsTable
760 Defined benefit plans [axis] Axis ifrs-full:DefinedBenefitPlansAxis
761 Defined benefit plans [member] Member ifrs-full:DefinedBenefitPlansMember
762 Pension benefit plans Member aezs:PensionBenefitPlansMember
763 Actuarial assumptions [axis] Axis ifrs-full:ActuarialAssumptionsAxis
764 Actuarial assumptions [member] Member ifrs-full:ActuarialAssumptionsMember
765 Change interest rate by 0.25% Member ifrs-full:ActuarialAssumptionOfDiscountRatesMember
766 Change salary rate by 0.25% Member ifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreasesMember
767 Change pension by 0.25% Member ifrs-full:ActuarialAssumptionOfExpectedRatesOfPensionIncreasesMember
768 Change mortality by 1 year Member ifrs-full:ActuarialAssumptionOfMortalityRatesMember
769 Disclosure of sensitivity analysis for actuarial assumptions [line items] LineItems ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsLineItems
770 Change in percentage, increase Concept (Percent) As Of ifrs-full:PercentageOfReasonablyPossibleIncreaseInActuarialAssumption
771 Change in percentage, decrease Concept (Percent) As Of ifrs-full:PercentageOfReasonablyPossibleDecreaseInActuarialAssumption
772 Change in mortality, increase Concept (xbrli:durationItemType) For Period aezs:DurationOfReasonablyPossibleIncreaseInActuarialAssumption
773 Change in mortality, decrease Concept (xbrli:durationItemType) For Period aezs:DurationOfReasonablyPossibleDecreaseInActuarialAssumption
774 Increase Concept (Monetary) As Of Credit ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleIncreaseInActuarialAssumption
775 Decrease Concept (Monetary) As Of Credit ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleDecreaseInActuarialAssumption
776 2458403 - Disclosure - Share and other capital - Common Shares Issued in Connection with "At-the-Market" ("ATM") Drawdowns (Details) Network

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 http://www.aezsinc.com/role/ShareAndOtherCapitalCommonSharesIssuedInConnectionWithAtTheMarketAtmDrawdownsDetails
777 Disclosure of terms and conditions of share-based payment arrangement [table] Table

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778 Class Of Warrant Or Right [Axis] Axis aezs:ClassOfWarrantOrRight1Axis
779 Class Of Warrant Or Right [Domain] Member aezs:ClassOfWarrantOrRight1Domain
780 Series A Warrants Member aezs:SeriesAWarrantsMember
781 Range [axis] Axis ifrs-full:RangeAxis
782 Ranges [member] Member ifrs-full:RangesMember
783 Average Member ifrs-full:WeightedAverageMember
784 Subsidiary Sale Of Stock [Axis] Axis aezs:SubsidiarySaleOfStock1Axis
785 Sale Of Stock Name Of Transaction [Domain] Member aezs:SaleOfStockNameOfTransaction1Domain
786 April 2016 ATM Program Member aezs:April2016ATMProgramMember
787 March 2017 ATM Program Member aezs:March2017ATMProgramMember
788 April 2017 ATM Program Member aezs:April2017ATMProgramMember
789 Shelf Registration Statement 2017 Member aezs:ShelfRegistrationStatement2017Member
790 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
791 Shares authorized (in shares) Concept (Shares) As Of aezs:SaleOfStockSharesAuthorized
792 Number of shares authorised (in shares) Concept (Monetary) As Of Credit aezs:SaleOfStockAmountAuthorized
793 Maximum amount of aggregate gross proceeds from sale of stock Concept (Monetary) For Period Debit aezs:SaleofStockMaximumAmountOfConsiderationReceivedOnTransaction
794 Sale of stock, number of shares issued (in shares) Concept (Shares) For Period aezs:SaleOfStockNumberOfSharesIssuedInTransaction1
795 Sale of stock, price per share (USD per share) Concept (Share) As Of aezs:SaleOfStockPricePerShare1
796 Proceeds from issuances of common shares, warrants (including pre-funded warrants), net of cash transaction costs of $nil, $250 and $1,107 in 2018, 2017, and 2016, respectively (note 19) Concept (Monetary) For Period Debit ifrs-full:ProceedsFromIssuingShares
797 Payments for share issue costs Concept (Monetary) For Period Credit ifrs-full:PaymentsForShareIssueCosts
798 Finance costs Concept (Monetary) For Period Debit ifrs-full:FinanceCosts
799 Sale of stock offering period Concept (xbrli:durationItemType) For Period aezs:SaleOfStockOfferingPeriod
800 Exercise price (in usd per share) Concept (Share) As Of aezs:ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights
801 2458406 - Disclosure - Share and other capital - November 2016 Offering (Details) Network

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 http://www.aezsinc.com/role/ShareAndOtherCapitalNovember2016OfferingDetails
802 Subsidiary or Equity Method Investee, Sale of Stock by Subsidiary or Equity Investee [Table] Table

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*

 aezs:SubsidiaryorEquityMethodInvesteeSaleofStockbySubsidiaryorEquityInvesteeTable
803 Shareholders' Equity Class [Axis] Axis aezs:ShareholdersEquityClass1Axis
804 Shareholders' Equity Class [Domain] Member aezs:ShareholdersEquityClassDomain
805 Warrants Not Settleable In Cash Member aezs:WarrantsNotSettleableInCash1Member
806 Class Of Warrant Or Right [Axis] Axis aezs:ClassOfWarrantOrRight1Axis
807 Class Of Warrant Or Right [Domain] Member aezs:ClassOfWarrantOrRight1Domain
808 Series C Warrant Member aezs:SeriesCWarrantMember
809 Pre-Funded Warrants Member aezs:PreFundedWarrantsMember
810 Income Statement Location [Axis] Axis aezs:IncomeStatementLocation1Axis
811 Income Statement Location [Domain] Member aezs:IncomeStatementLocation1Domain
812 General and Administrative Member aezs:GeneralandAdministrativeExpense1Member
813 Classes of financial liabilities [axis] Axis ifrs-full:ClassesOfFinancialLiabilitiesAxis
814 Financial liabilities, class [member] Member ifrs-full:FinancialLiabilitiesMember
815 Warrant liability Member aezs:WarrantLiabilityMember
816 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
817 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
818 Common share Member ifrs-full:OrdinarySharesMember
819 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
820 Equity [member] Member ifrs-full:EquityMember
821 Pre-Funded Warrants Member aezs:PreFundedWarrantsMember
822 Share capital Member ifrs-full:IssuedCapitalMember
823 Subsidiary Sale Of Stock [Axis] Axis aezs:SubsidiarySaleOfStock1Axis
824 Sale Of Stock Name Of Transaction [Domain] Member aezs:SaleOfStockNameOfTransaction1Domain
825 Public Stock Offering Member aezs:PublicStockOfferingMember
826 Registered Direct Offering Member aezs:RegisteredDirectOfferingMember
827 Subsidiary or Equity Method Investee, Sale of Stock by Subsidiary or Equity Investee [Line Items] LineItems aezs:SubsidiaryorEquityMethodInvesteeSaleofStockbySubsidiaryorEquityInvesteeLineItems
828 Number of securities called by warrants or rights (in shares) Concept (Shares) As Of aezs:ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights1
829 Number of securities called by warrants (in shares) Concept (Shares) As Of aezs:ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight1
830 Proceeds from issuance or sale of equity Concept (Monetary) For Period Debit aezs:ProceedsFromIssuanceOrSaleOfEquity1
831 Payments for share issue costs Concept (Monetary) For Period Credit ifrs-full:PaymentsForShareIssueCosts
832 Finance costs Concept (Monetary) For Period Debit ifrs-full:FinanceCosts
833 Period after date of issuance in which warrants become exercisable Concept (xbrli:durationItemType) For Period aezs:ClassOfWarrantOrRightPeriodAfterWhichWarrantsBecomeExercisable
834 Sale of stock offering period Concept (xbrli:durationItemType) For Period aezs:SaleOfStockOfferingPeriod
835 Exercise price (in usd per share) Concept (Share) As Of aezs:ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights
836 Sale of stock, price per share (USD per share) Concept (Share) As Of aezs:SaleOfStockPricePerShare1
837 Warrants exercisable in share-based payment arrangement, number of trading days immediately prior to exercise date Concept (xbrli:durationItemType) For Period aezs:WarrantsExercisableInShareBasedPaymentArrangementNumberOfTradingDaysImmediatelyPriorToExerciseDate
838 Proceeds from warrants exercised Concept (Monetary) For Period Debit aezs:ProceedsFromIssuanceOfWarrantsContingentUponExercise
839 Risk-free annual interest rate Concept (Percent) For Period aezs:FairValueAssumptionsRiskFreeInterestRate1
840 Expected volatility Concept (Percent) For Period aezs:FairValueAssumptionsExpectedVolatilityRate1
841 Expected life (years) Concept (xbrli:durationItemType) For Period aezs:FairValueAssumptionsExpectedTerm1
842 Expected dividend yield Concept (Percent) For Period aezs:FairValueAssumptionsExpectedDividendRate1
843 Warrant liability Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilitiesAtFairValueThroughProfitOrLoss
844 Initial beneficial ownership limitation option one Concept (Percent) For Period aezs:SaleOfStockPercentageOfOwnershipOwnershipLimitationPercentOptionOne
845 Warrant exercise period Concept (xbrli:durationItemType) For Period aezs:ClassOfWarrantOrRightExercisePeriod
846 Allocation of equity Concept (Monetary) As Of Credit ifrs-full:Equity
847 Share issue related cost Concept (Monetary) For Period Debit ifrs-full:ShareIssueRelatedCost
848 Gain (loss) on change in fair value of warrant liability Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnFinancialLiabilitiesAtFairValueThroughProfitOrLoss
849 2458407 - Disclosure - Share and other capital - Stock Options Narrative (Details) Network

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 http://www.aezsinc.com/role/ShareAndOtherCapitalStockOptionsNarrativeDetails
850 Disclosure of terms and conditions of share-based payment arrangement [table] Table

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 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
851 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
852 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
853 Stock options Member aezs:EmployeeStockOption1Member
854 Employee Stock Option, USD Member aezs:EmployeeStockOptionUSDMember
855 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
856 Maximum percentage of number of common shares that may be issued Concept (Percent) For Period aezs:SharesReservedForIssueUnderOptionsAndContractsForSaleOfSharesTopOfRangePercent
857 Stock options expiration period Concept (xbrli:durationItemType) For Period aezs:SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod1
858 Total compensation costs Concept (Monetary) As Of Debit aezs:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions1
859 Unrecognized stock based compensation costs, weighted average period for recognition Concept (xbrli:durationItemType) For Period aezs:EmployeeServiceShareBasedCompensationNonvestedAwardsCompensationCostNotYetRecognizedPeriodForRecognition2
860 2458408 - Disclosure - Share and other capital - Change in Stock Options Issued (Details) Network

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 http://www.aezsinc.com/role/ShareAndOtherCapitalChangeInStockOptionsIssuedDetails
861 Disclosure of terms and conditions of share-based payment arrangement [table] Table

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 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
862 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
863 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
864 Employee Stock Option, USD Member aezs:EmployeeStockOptionUSDMember
865 Employee Stock Option, CAD Member aezs:EmployeeStockOptionCADMember
866 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
867 Balance – Beginning of the year, Number (in shares) Concept (Decimal) As Of ifrs-full:NumberOfOutstandingShareOptions
868 Granted, Number (in shares) Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsGrantedInSharebasedPaymentArrangement
869 Forfeited, Number (in shares) Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsForfeitedInSharebasedPaymentArrangement
870 Cancelled, Number (in shares) Concept (Decimal) For Period aezs:NumberOfShareOptionsCancelledInSharebasedPaymentArrangement
871 Expired, Number (in shares) Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsExpiredInSharebasedPaymentArrangement
872 Balance – End of period, Number (in shares) Concept (Decimal) As Of ifrs-full:NumberOfOutstandingShareOptions
873 Balance – Beginning of the year, Weighted average exercise price (in US and CAN dollars per share) Concept (Monetary) As Of ifrs-full:WeightedAverageExercisePriceOfShareOptionsOutstandingInSharebasedPaymentArrangement
874 Granted, Weighted average exercise price (in US and CAN dollars per share) Concept (Monetary) For Period ifrs-full:WeightedAverageExercisePriceOfShareOptionsGrantedInSharebasedPaymentArrangement
875 Forfeited, Weighted average exercise price (in US and CAN dollars per share) Concept (Monetary) For Period ifrs-full:WeightedAverageExercisePriceOfShareOptionsForfeitedInSharebasedPaymentArrangement
876 Cancelled, Weighted average exercise price (in US and CAN dollars per share) Concept (Monetary) For Period Debit aezs:WeightedAverageExercisePriceOfShareOptionsCanceledInSharebasedPaymentArrangement
877 Expired, Weighted average exercise price (in US and CAN dollars per share) Concept (Monetary) For Period ifrs-full:WeightedAverageExercisePriceOfShareOptionsExpiredInSharebasedPaymentArrangement
878 Balance – End of period, Weighted average exercise price (in US and CAN dollars per share) Concept (Monetary) As Of ifrs-full:WeightedAverageExercisePriceOfShareOptionsOutstandingInSharebasedPaymentArrangement
879 2458409 - Disclosure - Share and other capital - Range of Exercise Prices of Outstanding Share Options (Details) Network

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 http://www.aezsinc.com/role/ShareAndOtherCapitalRangeOfExercisePricesOfOutstandingShareOptionsDetails
880 Disclosure of number and weighted average remaining contractual life of outstanding share options [table] Table

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*

 ifrs-full:DisclosureOfNumberAndWeightedAverageRemainingContractualLifeOfOutstandingShareOptionsTable
881 Range [axis] Axis ifrs-full:RangeAxis
882 Ranges [member] Member ifrs-full:RangesMember
883 Minimum Member ifrs-full:BottomOfRangeMember
884 Maximum Member ifrs-full:TopOfRangeMember
885 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
886 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
887 Employee Stock Option, USD Member aezs:EmployeeStockOptionUSDMember
888 Employee Stock Option, CAD Member aezs:EmployeeStockOptionCADMember
889 Ranges of exercise prices for outstanding share options [axis] Axis ifrs-full:RangesOfExercisePricesForOutstandingShareOptionsAxis
890 Ranges of exercise prices for outstanding share options [member] Member ifrs-full:RangesOfExercisePricesForOutstandingShareOptionsMember
891 Exercise Price Range One Member aezs:ExercisePriceRangeOneMember
892 Exercise Price Range Two Member aezs:ExercisePriceRangeTwoMember
893 Exercise Price Range Three Member aezs:ExercisePriceRangeThreeMember
894 Exercise Price Range Four Member aezs:ExercisePriceRangeFourMember
895 Exercise Price Range Five Member aezs:ExercisePriceRangeFiveMember
896 Disclosure of number and weighted average remaining contractual life of outstanding share options [line items] LineItems ifrs-full:DisclosureOfNumberAndWeightedAverageRemainingContractualLifeOfOutstandingShareOptionsLineItems
897 Exercise price, outstanding (in US and CAN dollars per share) Concept (Monetary) As Of ifrs-full:ExercisePriceOfOutstandingShareOptions
898 Exercise price, exercisable (in US and CAN dollars per share) Concept (Share) As Of aezs:ExercisePriceOfExercisableShareOptions
899 Number of options outstanding (in shares) Concept (Decimal) As Of ifrs-full:NumberOfOutstandingShareOptions
900 Weighted average remaining contractual life (years) Concept (Decimal) As Of ifrs-full:WeightedAverageRemainingContractualLifeOfOutstandingShareOptions
901 Weighted average exercise price (in US and CAN dollars per share) Concept (Monetary) As Of ifrs-full:WeightedAverageExercisePriceOfShareOptionsOutstandingInSharebasedPaymentArrangement
902 Number of share options exercisable (in shares) Concept (Decimal) As Of ifrs-full:NumberOfShareOptionsExercisableInSharebasedPaymentArrangement
903 Weighted average remaining contractual life (years) Concept (Decimal) As Of aezs:WeightedAverageRemainingContractualLifeOfExercisableShareOptions
904 Weighted average exercise price (in US and CAN dollars per share) Concept (Monetary) As Of ifrs-full:WeightedAverageExercisePriceOfShareOptionsExercisableInSharebasedPaymentArrangement
905 2458410 - Disclosure - Share and other capital - Disclosure of Assumptions Used to Determine Share-based Compensation Costs (Details) Network

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 http://www.aezsinc.com/role/ShareAndOtherCapitalDisclosureOfAssumptionsUsedToDetermineShareBasedCompensationCostsDetails
906 Disclosure of terms and conditions of share-based payment arrangement [table] Table

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*

 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
907 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
908 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
909 Employee Stock Option, USD Member aezs:EmployeeStockOptionUSDMember
910 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
911 Expected dividend yield Concept (Percent) For Period ifrs-full:ExpectedDividendAsPercentageShareOptionsGranted
912 Expected volatility Concept (Percent) For Period ifrs-full:DescriptionOfExpectedVolatilityShareOptionsGranted
913 Risk-free annual interest rate Concept (Percent) For Period ifrs-full:DescriptionOfRiskFreeInterestRateShareOptionsGranted
914 Expected life (years) Concept (Decimal) For Period ifrs-full:DescriptionOfOptionLifeShareOptionsGranted
915 Weighted average share price (in dollars per share) Concept (Monetary) For Period ifrs-full:WeightedAverageSharePriceShareOptionsGranted
916 Granted, Weighted average exercise price (in US and CAN dollars per share) Concept (Monetary) For Period ifrs-full:WeightedAverageExercisePriceOfShareOptionsGrantedInSharebasedPaymentArrangement
917 Weighted average grant date fair value (in dollars per share) Concept (Monetary) As Of Credit ifrs-full:WeightedAverageFairValueAtMeasurementDateShareOptionsGranted
918 2461402 - Disclosure - Operating expenses (Details) Network

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*

 http://www.aezsinc.com/role/OperatingExpensesDetails
919 Implied Table Table

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*

 implied:Table
920 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
921 Key management personnel compensation Abstract aezs:KeyManagementPersonnelCompensationAbstract
922 Salaries and short-term employee benefits Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationShorttermEmployeeBenefits
923 Consultants fees Concept (Monetary) For Period Debit aezs:KeyManagementPersonnelCompensationConsultantsFees
924 Termination benefits Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationTerminationBenefits
925 Post-employment benefits Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationPostemploymentBenefits
926 Share-based compensation costs Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationSharebasedPayment
927 Key management personnel compensation Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensation
928 Other employees compensation: Abstract aezs:OtherEmployeeCompensationAbstract
929 Salaries and short-term employee benefits Concept (Monetary) For Period Debit ifrs-full:ShorttermEmployeeBenefitsExpense
930 Termination benefits (note 16) Concept (Monetary) For Period Debit ifrs-full:TerminationBenefitsExpense
931 Post-employment benefits Concept (Monetary) For Period Debit ifrs-full:PostemploymentBenefitExpenseDefinedBenefitPlans
932 Share-based compensation costs Concept (Monetary) For Period Debit ifrs-full:ExpenseFromSharebasedPaymentTransactionsWithEmployees
933 Other employee compensation Concept (Monetary) For Period Debit ifrs-full:EmployeeBenefitsExpense
934 Professional fees Concept (Monetary) For Period Debit ifrs-full:ProfessionalFeesExpense
935 Insurance Concept (Monetary) For Period Debit ifrs-full:InsuranceExpense
936 Third-party R&D Concept (Monetary) For Period Debit aezs:ThirdPartyResearchAndDevelopmentExpense
937 Contracted sales force Concept (Monetary) For Period Debit aezs:ContractedSalesForceExpense
938 Travel Concept (Monetary) For Period Debit ifrs-full:TravelExpense
939 Marketing services Concept (Monetary) For Period Debit ifrs-full:AdvertisingExpense
940 Laboratory supplies Concept (Monetary) For Period Debit aezs:LaboratorySuppliesExpense
941 Other goods and services Concept (Monetary) For Period Debit aezs:OtherGoodsAndServicesExpense
942 Leasing costs, net of sublease receipts Concept (Monetary) For Period Debit ifrs-full:LeaseAndSubleasePaymentsRecognisedAsExpense
943 Sublease income Concept (Monetary) For Period Credit aezs:SubleaseIncome1
944 Transaction costs related to share purchase warrants Concept (Monetary) For Period Debit aezs:SharePurchaseWarrantsTransactionCosts
945 Depreciation and amortization Concept (Monetary) For Period Debit ifrs-full:DepreciationAndAmortisationExpense
946 Impairment (reversal) losses Concept (Monetary) For Period Debit ifrs-full:ImpairmentLossRecognisedInProfitOrLoss
947 Operating foreign exchange (gains) losses Concept (Monetary) For Period Debit aezs:OperatingExpenseForeignExchangeLoss
948 Operating expense, excluding compensation cost Concept (Monetary) For Period Debit aezs:OperatingExpenseExcludingCompensationCost
949 Total operating expenses Concept (Monetary) For Period Debit ifrs-full:OperatingExpense
950 2464402 - Disclosure - Supplemental disclosure of cash flow information (Details) Network

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 http://www.aezsinc.com/role/SupplementalDisclosureOfCashFlowInformationDetails
951 Implied Table Table

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*

 implied:Table
952 Statement of cash flows [abstract] Abstract ifrs-full:StatementOfCashFlowsAbstract
953 Increase (Decrease) In Operating Capital [Abstract] Abstract aezs:IncreaseDecreaseInOperatingCapital1Abstract
954 Trade and other receivables Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables
955 Inventory Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInInventories
956 Prepaid expenses and other current assets Concept (Monetary) For Period Debit aezs:AdjustmentsForDecreaseIncreaseInCurrentPrepaymentsAndOtherCurrentAssets
957 Other non-current assets Concept (Monetary) For Period Debit aezs:AdjustmentsForDecreaseIncreaseInOtherNonCurrentAssets
958 Payables and accrued liabilities Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables
959 Taxes payable Concept (Monetary) For Period Debit aezs:AdjustmentsForIncreaseDecreaseInTaxesPayable
960 Deferred revenues Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInDeferredIncome
961 Provision for restructuring and other costs (note 16) Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForProvisions
962 Employee future benefits (note 18) Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities
963 Increase (decrease) in working capital Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseInWorkingCapital
964 2467402 - Disclosure - Income taxes - Components of Current and Deferred Income Tax Expense (Details) Network

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 http://www.aezsinc.com/role/IncomeTaxesComponentsOfCurrentAndDeferredIncomeTaxExpenseDetails
965 Implied Table Table

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*

 implied:Table
966 Income Taxes [Abstract] Abstract aezs:IncomeTaxesAbstract
967 Current tax (expense) recovery Concept (Monetary) For Period Debit ifrs-full:CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriods
968 Deferred tax: Abstract ifrs-full:DeferredTaxExpenseIncomeAbstract
969 Origination and reversal of temporary differences Concept (Monetary) For Period Debit ifrs-full:DeferredTaxExpenseIncomeRelatingToOriginationAndReversalOfTemporaryDifferences
970 Adjustments in respect of prior years Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDeferredTaxOfPriorPeriods
971 Change in unrecognized tax assets Concept (Monetary) For Period Credit ifrs-full:TaxBenefitArisingFromPreviouslyUnrecognisedTaxLossTaxCreditOrTemporaryDifferenceOfPriorPeriodUsedToReduceDeferredTaxExpense
972 Income tax (expense) recovery Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
973 2467403 - Disclosure - Income taxes - Reconciliation of the Combined Canadian Federal and Provincial Income Tax Rate to the Income Tax Expense (Details) Network

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 http://www.aezsinc.com/role/IncomeTaxesReconciliationOfCombinedCanadianFederalAndProvincialIncomeTaxRateToIncomeTaxExpenseDetails
974 Implied Table Table

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*

 implied:Table
975 Income Taxes [Abstract] Abstract aezs:IncomeTaxesAbstract
976 Combined Canadian federal and provincial statutory income tax rate Concept (Percent) For Period ifrs-full:ApplicableTaxRate
977 Income tax (expense) recovery based on combined statutory income tax rate Concept (Monetary) For Period Debit ifrs-full:TaxExpenseIncomeAtApplicableTaxRate
978 Change in unrecognized tax assets Concept (Monetary) For Period Debit ifrs-full:TaxEffectOfTaxLosses
979 Change in unrecognized tax assets related to OCI Concept (Monetary) For Period Debit aezs:TaxEffectOfTaxLossesRelatingToOtherComprehensiveIncome
980 Share issuance costs Concept (Monetary) For Period Debit aezs:TaxEffectOfShareIssuanceCosts
981 Permanent difference attributable to the use of local currency for tax reporting Concept (Monetary) For Period Debit aezs:TaxEffectRelatingToExchangeDifferencesOnTranslation
982 Change in enacted rates used Concept (Monetary) For Period Debit ifrs-full:TaxEffectFromChangeInTaxRate
983 Permanent difference attributable to net change in fair value of warrant liability Concept (Monetary) For Period Debit aezs:TaxEffectOfGainsLossesOnFinancialLiabilitiesAtFairValueThroughProfitOrLoss
984 Share-based compensation costs Concept (Monetary) For Period Debit aezs:TaxEffectOfShareBasedCompensation
985 Difference in statutory income tax rate of foreign subsidiaries Concept (Monetary) For Period Debit ifrs-full:TaxEffectOfForeignTaxRates
986 Adjustments in respect of prior years Concept (Monetary) For Period Debit aezs:TaxEffectOfPriorYearIncomeTaxes
987 Other Concept (Monetary) For Period Debit ifrs-full:OtherTaxEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome
988 Income tax (expense) recovery Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
989 2467404 - Disclosure - Income taxes - Loss Before Income Taxes (Details) Network

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 http://www.aezsinc.com/role/IncomeTaxesLossBeforeIncomeTaxesDetails
990 Disclosure of geographical areas [table] Table

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 ifrs-full:DisclosureOfGeographicalAreasTable
991 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
992 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
993 Germany Member country:DE
994 Canada Member country:CA
995 United States Member country:US
996 Disclosure of geographical areas [line items] LineItems ifrs-full:DisclosureOfGeographicalAreasLineItems
997 Loss before income taxes Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
998 2467405 - Disclosure - Income taxes - Components of Deferred Tax Assets and Liabilities (Details) Network

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 http://www.aezsinc.com/role/IncomeTaxesComponentsOfDeferredTaxAssetsAndLiabilitiesDetails
999 Disclosure of temporary difference, unused tax losses and unused tax credits [table] Table

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 ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable
1000 Temporary difference, unused tax losses and unused tax credits [axis] Axis ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis
1001 Temporary difference, unused tax losses and unused tax credits [member] Member ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember
1002 Operating losses carried forward Member aezs:OperatingLossesCarriedForwardTemporaryDifferencesMember
1003 Intangible assets Member aezs:IntangibleAssetRelatedTemporaryDifferencesMember
1004 Deferred revenues Member aezs:DeferredRevenuesRelatedTemporaryDifferencesMember
1005 Restricted cash Member aezs:RestrictedCashRelatedTemporaryDifferencesMember
1006 Payables and accrued liabilities Member aezs:PayableAndAccruedLiabilitiesRelatedTemporaryDifferencesMember
1007 Property, plant and equipment Member aezs:PropertyPlantAndEquipmentRelatedTemporaryDifferencesMember
1008 Other Member ifrs-full:OtherTemporaryDifferencesMember
1009 Disclosure of temporary difference, unused tax losses and unused tax credits [line items] LineItems ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems
1010 Deferred tax assets Abstract ifrs-full:AssetsAbstract
1011 Current: Abstract ifrs-full:CurrentAssetsAbstract
1012 Deferred tax assets, current Concept (Monetary) As Of Debit aezs:DeferredTaxAssetsCurrent1
1013 Non-current: Abstract ifrs-full:NoncurrentAssetsAbstract
1014 Deferred tax assets, noncurrent Concept (Monetary) As Of Debit aezs:DeferredTaxAssetsNoncurrent1
1015 Deferred tax assets Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssets
1016 Deferred tax liabilities Abstract ifrs-full:LiabilitiesAbstract
1017 Current: Abstract aezs:LiabilitiesCurrent1Abstract
1018 Deferred tax liabilities, current Concept (Monetary) As Of Credit aezs:DeferredTaxLiabilitiesCurrent1
1019 Non-current: Abstract aezs:LiabilitiesNoncurrent1Abstract
1020 Deferred tax liabilities, noncurrent Concept (Monetary) As Of Credit aezs:DeferredTaxLiabilitiesNoncurrent1
1021 Deferred tax liabilities Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilities
1022 Deferred tax assets (liabilities), net Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilityAsset
1023 2467406 - Disclosure - Income taxes - Components of Unrecognized Deferred Tax Assets (Details) Network

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 http://www.aezsinc.com/role/IncomeTaxesComponentsOfUnrecognizedDeferredTaxAssetsDetails
1024 Disclosure of temporary difference, unused tax losses and unused tax credits [table] Table

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 ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable
1025 Temporary difference, unused tax losses and unused tax credits [axis] Axis ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis
1026 Temporary difference, unused tax losses and unused tax credits [member] Member ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember
1027 Deferred revenues and other provisions Member aezs:DeferredRevenuesAndOtherProvisionsRelatedTemporaryDifferencesMember
1028 Deferred revenues Member aezs:DeferredRevenuesRelatedTemporaryDifferencesMember
1029 Operating losses carried forward Member aezs:OperatingLossesCarriedForwardTemporaryDifferencesMember
1030 SR&ED Pool Member aezs:ResearchAndDevelopmentCostsRelatedTemporaryDifferencesMember
1031 Unused tax credits Member ifrs-full:UnusedTaxCreditsMember
1032 Employee future benefits Member aezs:EmployeeFutureBenefitsRelatedTemporaryDifferencesMember
1033 Property, plant and equipment Member aezs:PropertyPlantAndEquipmentRelatedTemporaryDifferencesMember
1034 Share issuance expenses Member aezs:ShareIssuanceExpensesRelatedTemporaryDifferencesMember
1035 Other Member ifrs-full:OtherTemporaryDifferencesMember
1036 Disclosure of temporary difference, unused tax losses and unused tax credits [line items] LineItems ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems
1037 Deferred tax assets Abstract aezs:ComponentsofDeferredTaxAssets1Abstract
1038 Current: Concept (Monetary) As Of Debit aezs:DeductibleTemporaryDifferencesForWhichNoDeferredTaxAssetIsRecognisedCurrent
1039 Non-current: Concept (Monetary) As Of Debit aezs:DeductibleTemporaryDifferencesForWhichNoDeferredTaxAssetIsRecognisedNoncurrent
1040 Unrecognized deferred tax assets Concept (Monetary) As Of ifrs-full:DeductibleTemporaryDifferencesForWhichNoDeferredTaxAssetIsRecognised
1041 2467407 - Disclosure - Income taxes - Disclosure of Tax Attributes to be Deferred (Details) Network

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1042 Disclosure of geographical areas [table] Table

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1065 2467408 - Disclosure - Income taxes - Narrative (Details) Network

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1066 Disclosure of geographical areas [table] Table

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1077 2467409 - Disclosure - Income taxes - Disclosure of Federal Tax Losses (Details) Network

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*

 http://www.aezsinc.com/role/IncomeTaxesDisclosureOfFederalTaxLossesDetails
1078 Disclosure of geographical areas [table] Table

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 ifrs-full:DisclosureOfGeographicalAreasTable
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1080 Tax Attributes Expiration Period [Member] Member aezs:TaxAttributesExpirationPeriodMember
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1093 2469402 - Disclosure - Financial instruments and financial risk management - Schedule Of Financial Assets and Liabilities (Details) Network

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1094 Disclosure of detailed information about financial instruments [table] Table

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 ifrs-full:DisclosureOfFinancialInstrumentsTable
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1098 Financial liabilities at amortised cost, category Member ifrs-full:FinancialLiabilitiesAtAmortisedCostCategoryMember
1099 Types of financial liabilities [axis] Axis ifrs-full:TypesOfFinancialLiabilitiesAxis
1100 Financial liabilities, type [member] Member ifrs-full:FinancialLiabilitiesTypeMember
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1105 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
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1114 2469403 - Disclosure - Financial instruments and financial risk management - Narrative (Details) Network

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*

 http://www.aezsinc.com/role/FinancialInstrumentsAndFinancialRiskManagementNarrativeDetails
1115 Disclosure of nature and extent of risks arising from financial instruments [table] Table

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 ifrs-full:DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsTable
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1138 2469404 - Disclosure - Financial instruments and financial risk management - Effect Of Share Price Variations On Warrant Liability (Details) Network

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1139 Disclosure of detailed information about financial instruments [table] Table

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*

 ifrs-full:DisclosureOfFinancialInstrumentsTable
1140 Classes of financial liabilities [axis] Axis ifrs-full:ClassesOfFinancialLiabilitiesAxis
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1153 2470402 - Disclosure - Segment information - Narrative (Details) Network

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*

 http://www.aezsinc.com/role/SegmentInformationNarrativeDetails
1154 Implied Table Table

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*

 implied:Table
1155 Operating Segments [Abstract] Abstract aezs:OperatingSegmentsAbstract
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1157 2470403 - Disclosure - Segment information - Revenues by Geographical Area (Details) Network

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*

 http://www.aezsinc.com/role/SegmentInformationRevenuesByGeographicalAreaDetails
1158 Disclosure of geographical areas [table] Table

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*

 ifrs-full:DisclosureOfGeographicalAreasTable
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1169 2470404 - Disclosure - Segment information - Non-current Assets by Geographical Area (Details) Network

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*

 http://www.aezsinc.com/role/SegmentInformationNonCurrentAssetsByGeographicalAreaDetails
1170 Disclosure of geographical areas [table] Table

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*

 ifrs-full:DisclosureOfGeographicalAreasTable
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1178 2470405 - Disclosure - Segment information - Summary of Major Customer Information (Details) Network

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1179 Disclosure of major customers [table] Table

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 ifrs-full:DisclosureOfMajorCustomersTable
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1191 2471402 - Disclosure - Net income (loss) per share (Details) Network

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 http://www.aezsinc.com/role/NetIncomeLossPerShareDetails
1192 Earnings per share [table] Table

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1202 2472402 - Disclosure - Commitments and contingencies - Expected Future Minimum Payments (Details) Network

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 http://www.aezsinc.com/role/CommitmentsAndContingenciesExpectedFutureMinimumPaymentsDetails
1203 Disclosure of finance lease and operating lease by lessor [table] Table

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 ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLessorTable
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1215 2472403 - Disclosure - Commitments and contingencies - Contingencies Narrative (Details) Network

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 http://www.aezsinc.com/role/CommitmentsAndContingenciesContingenciesNarrativeDetails
1216 Disclosure of contingent liabilities [table] Table

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 ifrs-full:DisclosureOfContingentLiabilitiesTable
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1233 2473401 - Disclosure - Reclassification on comparative figures - Narrative (Details) Network

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1234 Disclosure of reclassifications or changes in presentation [table] Table

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