Merus N.V. (SEC Filing Page | XBRL Cloud Viewer | XBRL Instance)

Line Label Object Class Period Type Balance Report ElementName
1 101 - Document - Document and Entity Information Network

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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 Trading Symbol Concept (Text/String) For Period dei:TradingSymbol
10 Entity Registrant Name Concept (Text/String) For Period dei:EntityRegistrantName
11 Entity Central Index Key Concept (CIK Number) For Period dei:EntityCentralIndexKey
12 Current Fiscal Year End Date Concept (Month/Day) For Period dei:CurrentFiscalYearEndDate
13 Entity Well-known Seasoned Issuer Concept (Yes/No) For Period dei:EntityWellKnownSeasonedIssuer
14 Entity Current Reporting Status Concept (Yes/No) For Period dei:EntityCurrentReportingStatus
15 Entity Voluntary Filers Concept (Yes/No) For Period dei:EntityVoluntaryFilers
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18 Entity Emerging Growth Company Concept (Yes/No) For Period dei:EntityEmergingGrowthCompany
19 Entity Ex Transition Period Concept (Yes/No) For Period dei:EntityExTransitionPeriod
20 Entity Common Stock, Shares Outstanding Concept (Shares) As Of dei:EntityCommonStockSharesOutstanding
21 103 - Statement - Consolidated Statement of Financial Position Network

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23 Non Current Assets Finance Liabilities [abstract] Abstract mrus:NonCurrentAssetsFinanceLiabilitiesAbstract
24 Non-current assets Abstract ifrs-full:NoncurrentAssetsAbstract
25 Property, plant and equipment, net Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
26 Intangible assets, net Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsAndGoodwill
27 Non-current investments Concept (Monetary) As Of Debit ifrs-full:NoncurrentHeldtomaturityInvestments
28 Other assets Concept (Monetary) As Of Debit ifrs-full:OtherNoncurrentAssets
29 Non-current assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssets
30 Current assets Abstract ifrs-full:CurrentAssetsAbstract
31 Trade and other receivables Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherCurrentReceivables
32 Current investments Concept (Monetary) As Of Debit ifrs-full:CurrentHeldtomaturityInvestments
33 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
34 Current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
35 Total assets Concept (Monetary) As Of Debit ifrs-full:Assets
36 Shareholders' equity Abstract ifrs-full:EquityAbstract
37 Issued and paid-in capital Concept (Monetary) As Of Credit ifrs-full:IssuedCapital
38 Share premium account Concept (Monetary) As Of Credit ifrs-full:SharePremium
39 Accumulated loss Concept (Monetary) As Of Credit ifrs-full:RetainedEarnings
40 Total shareholders' equity Concept (Monetary) As Of Credit ifrs-full:Equity
41 Non-current liabilities Abstract ifrs-full:NoncurrentLiabilitiesAbstract
42 Deferred revenue Concept (Monetary) As Of Credit ifrs-full:DeferredIncomeClassifiedAsNoncurrent
43 Current liabilities Abstract ifrs-full:CurrentLiabilitiesAbstract
44 Trade payables Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayablesToTradeSuppliers
45 Taxes and social security liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentPayablesOnSocialSecurityAndTaxesOtherThanIncomeTax
46 Deferred revenue Concept (Monetary) As Of Credit ifrs-full:DeferredIncomeClassifiedAsCurrent
47 Other liabilities and accruals Concept (Monetary) As Of Credit ifrs-full:CurrentAccruedExpensesAndOtherCurrentLiabilities
48 Current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
49 Total liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
50 Total shareholders' equity and liabilities Concept (Monetary) As Of Credit ifrs-full:EquityAndLiabilities
51 104 - Statement - Consolidated Statement of Profit or Loss and Comprehensive Loss Network

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52 Implied Table Table

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54 Revenue Concept (Monetary) For Period Credit ifrs-full:Revenue
55 Research and development costs Concept (Monetary) For Period Debit ifrs-full:ResearchAndDevelopmentExpense
56 Management and administration costs Concept (Monetary) For Period Debit ifrs-full:GeneralAndAdministrativeExpense
57 Other expenses Concept (Monetary) For Period Debit ifrs-full:OtherExpenseByNature
58 Total operating expenses Concept (Monetary) For Period Debit ifrs-full:OperatingExpense
59 Operating result Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromOperatingActivities
60 Finance income Concept (Monetary) For Period Credit ifrs-full:FinanceIncome
61 Finance cost Concept (Monetary) For Period Debit ifrs-full:FinanceCosts
62 Other income Concept (Monetary) For Period Credit ifrs-full:OtherFinanceIncome
63 Other income (expense) Concept (Monetary) For Period Credit ifrs-full:OtherFinanceIncomeCost
64 Result before taxation Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
65 Income tax expense Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
66 Result after taxation Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
67 Other comprehensive income Abstract ifrs-full:OtherComprehensiveIncomeAbstract
68 Exchange differences from translation of foreign operations Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation
69 Total other comprehensive income for the period Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncome
70 Total comprehensive loss for the period Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
71 Basic (and diluted) loss per share Concept (Share) For Period ifrs-full:BasicAndDilutedEarningsLossPerShare
72 105 - Statement - Consolidated Statement of Changes in Shareholders' Equity Network

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73 Statement of changes in equity [table] Table

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75 Equity [member] Member ifrs-full:EquityMember
76 Issued capital [member] Member ifrs-full:IssuedCapitalMember
77 Share premium [member] Member ifrs-full:SharePremiumMember
78 Accumulated loss [member] Member ifrs-full:RetainedEarningsMember
79 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
80 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
81 Common share capital [member] Member mrus:CommonShareCapitalMember
82 Class A preference share capital [member] Member mrus:ClassAPreferenceShareCapitalMember
83 Class B preference share capital [member] Member mrus:ClassBPreferenceShareCapitalMember
84 Class C preference share capital [member] Member mrus:ClassCPreferenceShareCapitalMember
85 Common share premium [member] Member mrus:CommonSharePremiumMember
86 Class A preference share premium [member] Member mrus:ClassAPreferenceSharePremiumMember
87 Class B preference share premium [member] Member mrus:ClassBPreferenceSharePremiumMember
88 Class C preference share premium [member] Member mrus:ClassCPreferenceSharePremiumMember
89 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
90 Currently stated [member] Member ifrs-full:RestatedMember
91 Previously stated [member] Member ifrs-full:PreviouslyStatedMember
92 Increase (decrease) due to application of IFRS 15 [member] Member ifrs-full:IncreaseDecreaseDueToApplicationOfIFRS15Member
93 Statement of changes in equity [line items] LineItems ifrs-full:StatementOfChangesInEquityLineItems
94 Beginning balance Concept (Monetary) As Of Credit ifrs-full:Equity
95 Restated result after taxation for the period Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
96 Other comprehensive income Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncome
97 Total comprehensive loss Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
98 Transactions with owners of the Company: Abstract mrus:TransactionsWithOwnersAbstract
99 Issuance of shares (net) Concept (Monetary) For Period Credit ifrs-full:IssueOfEquity
100 IPO expenses Concept (Monetary) For Period Debit mrus:InitialPublicOfferingCosts
101 Conversion of preference shares Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughConversionOfConvertibleInstruments
102 Equity settled shared-based payments Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughSharebasedPaymentTransactions
103 Total contributions by and distributions to owners of the Company Concept (Monetary) For Period Credit mrus:IncreaseThroughContributionsByAndDistributionsToOwnersEquity
104 Ending balance Concept (Monetary) As Of Credit ifrs-full:Equity
105 106 - Statement - Consolidated Statement of Cash flows Network

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106 Implied Table Table

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107 Statement of cash flows [abstract] Abstract ifrs-full:StatementOfCashFlowsAbstract
108 Cash flows from operating activities Abstract ifrs-full:CashFlowsFromUsedInOperatingActivitiesAbstract
109 Result after taxation Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
110 Adjustments for: Abstract ifrs-full:AdjustmentsForReconcileProfitLossAbstract
111 Change in fair value derivative Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForGainsLossesOnChangeInFairValueOfDerivatives
112 Unrealized foreign exchange results Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForUnrealisedForeignExchangeLossesGains
113 Depreciation and amortization Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDepreciationAndAmortisationExpense
114 Share-based payment expenses Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForSharebasedPayments
115 Net finance (income) expenses Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForFinanceIncomeCost
116 Cash flows from (used in) operations before changes in working capital Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital
117 Changes in working capital: Abstract mrus:ChangeInWorkingCapitalAbstract
118 Trade and other receivables Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables
119 Other assets Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInOtherAssets
120 Trade payables Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables
121 Other liabilities and accruals Concept (Monetary) For Period Debit mrus:AdjustmentsForIncreaseDecreaseInOtherLiabilitiesAndAccurals
122 Deferred revenue Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInDeferredIncome
123 Tax and social security liabilities Concept (Monetary) For Period Debit mrus:AdjustmentsForIncreaseDecreaseInTaxAndSocialSecurityLiabilities
124 Cash used in operations Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperations
125 Interest paid Concept (Monetary) For Period Credit ifrs-full:InterestPaidClassifiedAsOperatingActivities
126 Taxes paid Concept (Monetary) For Period Credit ifrs-full:IncomeTaxesPaidRefundClassifiedAsOperatingActivities
127 Net cash used in operating activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperatingActivities
128 Cash flows from investing activities Abstract ifrs-full:CashFlowsFromUsedInInvestingActivitiesAbstract
129 Purchases of investments Concept (Monetary) For Period Credit ifrs-full:PurchaseOfFinancialInstrumentsClassifiedAsInvestingActivities
130 Proceeds from investment maturities Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSalesOrMaturityOfFinancialInstrumentsClassifiedAsInvestingActivities
131 Purchase of intellectual property Concept (Monetary) For Period Credit ifrs-full:PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities
132 Acquisition of property, plant and equipment Concept (Monetary) For Period Credit ifrs-full:PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities
133 Interest received Concept (Monetary) For Period Debit ifrs-full:InterestReceivedClassifiedAsInvestingActivities
134 Net cash used in investing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInInvestingActivities
135 Cash flows from financing activities Abstract ifrs-full:CashFlowsFromUsedInFinancingActivitiesAbstract
136 Proceeds from issuing shares, net of issuance costs Concept (Monetary) For Period Debit ifrs-full:ProceedsFromIssuingShares
137 Financing costs Concept (Monetary) For Period Credit ifrs-full:PaymentsForDebtIssueCosts
138 Proceeds from stock option exercises Concept (Monetary) For Period Debit ifrs-full:ProceedsFromExerciseOfOptions
139 Prepaid share issuance costs Concept (Monetary) For Period Credit ifrs-full:PaymentsForShareIssueCosts
140 Proceeds from collaboration and license agreement Concept (Monetary) For Period Debit mrus:ProceedsFromCollaborationAgreement
141 Repayment of borrowings Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfBorrowingsClassifiedAsFinancingActivities
142 Changes in restricted cash Concept (Monetary) For Period Debit mrus:ChangesInRestrictedCash
143 Net cash provided by financing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInFinancingActivities
144 Net increase (decrease) in cash and cash equivalents Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges
145 Effects of exchange rate changes on cash and cash equivalents Concept (Monetary) For Period Debit ifrs-full:EffectOfExchangeRateChangesOnCashAndCashEquivalents
146 Cash and cash equivalents, beginning of period Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
147 Cash and cash equivalents, end of period Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
148 Supplemental disclosure of non-cash activities: Abstract mrus:SupplementalDisclosureOfCashFlowInformationAbstract
149 Changes in accrued capital expenditures Concept (Monetary) For Period Debit mrus:ChangesInAccruedCapitalExpenditures
150 107 - Disclosure - General Information Network

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154 108 - Disclosure - Basis of Presentation Network

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157 Basis of Presentation Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfBasisOfPreparationOfFinancialStatementsExplanatory
158 109 - Disclosure - Significant Accounting Policies Network

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162 110 - Disclosure - Recently Issued or Adopted International Financial Reporting Standards Network

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166 111 - Disclosure - Property, Plant and Equipment Network

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170 112 - Disclosure - Intangible Assets Network

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178 114 - Disclosure - Investments Network

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182 115 - Disclosure - Trade and Other Receivables Network

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186 116 - Disclosure - Other Liabilities and Accruals Network

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190 117 - Disclosure - Deferred Revenue Network

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194 118 - Disclosure - Shareholders' Equity Network

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198 119 - Disclosure - Revenue Network

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202 120 - Disclosure - Total Operating Expenses Network

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206 121 - Disclosure - Employee Benefits Network

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210 122 - Disclosure - Other Income (Expense) Network

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214 123 - Disclosure - Loss per share Network

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218 124 - Disclosure - Financial Instruments Network

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243 Property, Plant and Equipment Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory
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826 R&D costs [member] Member mrus:ResearchAndDevelopmentCostsMember
827 Management and administration costs [member] Member mrus:ManagementAndAdministrationCostsMember
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829 Disclosure Of Share Of Equity Investment [line items] LineItems mrus:DisclosureOfShareOfEquityInvestmentLineItems
830 Stock award expense Concept (Monetary) For Period Debit mrus:StockAwardExpense
831 179 - Disclosure - Employee Benefits - Additional Information (Detail) Network

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832 Disclosure of employee benefits [table] Table

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836 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
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838 Netherlands [member] Member country:NL
839 United States [member] Member country:US
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841 Number of employees Concept (Decimal) As Of ifrs-full:NumberOfEmployees
842 180 - Disclosure - Other Income (Expense) - Summary of Other Income (Expense) (Detail) Network

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843 Implied Table Table

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845 Interest income and similar related income Concept (Monetary) For Period Credit mrus:InterestAndRelatedIncome
846 Net gain on foreign exchange Concept (Monetary) For Period Credit ifrs-full:NetForeignExchangeGain
847 Finance income Concept (Monetary) For Period Credit ifrs-full:FinanceIncome
848 Other income Concept (Monetary) For Period Credit ifrs-full:OtherIncome
849 Interest and other expenses Concept (Monetary) For Period Debit mrus:InterestAndOtherExpense
850 Net loss on foreign exchange Concept (Monetary) For Period Debit ifrs-full:NetForeignExchangeLoss
851 Derivative financial instrument expense Concept (Monetary) For Period Credit ifrs-full:TradingIncomeExpenseOnDerivativeFinancialInstruments
852 Finance cost Concept (Monetary) For Period Debit ifrs-full:FinanceCosts
853 Total other income (expense) Concept (Monetary) For Period Credit mrus:OtherIncomeExpense
854 181 - Disclosure - Other Income (Expense) - Additional Information (Detail) Network

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855 Net Interest Income And Expense [table] Table

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857 In accordance with IFRS 9 [member] Member ifrs-full:InAccordanceWithIFRS9Member
858 IAS 39 [member] Member mrus:IAS39Member
859 Types of contracts [axis] Axis ifrs-full:TypesOfContractsAxis
860 Types of contracts [member] Member ifrs-full:TypesOfContractsMember
861 Incyte share subscription agreement [member] Member mrus:IncyteShareSubscriptionAgreementMember
862 Regeneron Subscription Agreement [member] Member mrus:RegeneronSubscriptionAgreementMember
863 Disclosure of deferred tax assets notional interest [line items] LineItems mrus:DisclosureOfDeferredTaxAssetsNotionalInterestLineItems
864 Common shares issued Concept (Shares) For Period ifrs-full:IncreaseDecreaseInNumberOfOrdinarySharesIssued
865 Purchase price per common share Concept (Share) For Period mrus:PurchasePricePerCommonShare
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868 Gain on litigation settlement Concept (Monetary) For Period Credit ifrs-full:GainsOnLitigationSettlements
869 Total derivative asset Concept (Monetary) As Of Debit ifrs-full:DerivativeFinancialAssets
870 Finance cost Concept (Monetary) For Period Debit ifrs-full:FinanceCosts
871 182 - Disclosure - Loss per Share - Summary of Basic and Diluted Loss per Share (Detail) Network

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872 Implied Table Table

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874 Numerator: Abstract mrus:NumeratorComputationOfBasicAndDilutedEarningsPerShareAbstract
875 Net loss attributable to equity holders of the Company Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
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877 Weighted average shares outstanding-basic and diluted Concept (Shares) For Period mrus:WeightedAverageNumberOfShares
878 Loss per share-basic and diluted Concept (Share) For Period ifrs-full:BasicAndDilutedEarningsLossPerShare
879 183 - Disclosure - Loss per Share - Additional Information (Detail) Network

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880 Implied Table Table

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881 Earnings per share [abstract] Abstract ifrs-full:EarningsPerShareAbstract
882 Dividend declared Concept (Monetary) As Of Debit mrus:DividendDeclared
883 184 - Disclosure - Financial Instrument - Summary of Maximum Credit Exposure (Detail) Network

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884 Implied Table Table

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885 Fixed Rate of Instruments [abstract] Abstract mrus:FixedRateOfInstrumentsAbstract
886 Trade and unbilled receivables Concept (Monetary) As Of Debit mrus:TradeAndUnbilledReceivables
887 Investments Concept (Monetary) As Of Debit ifrs-full:HeldtomaturityInvestments
888 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
889 Maximum exposure to credit risk Concept (Monetary) As Of ifrs-full:MaximumExposureToCreditRisk
890 185 - Disclosure - Financial Instrument - Summary of Aging of Trade and Unbilled Receivables (Detail) Network

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891 Disclosure of financial assets that are either past due or impaired [table] Table

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892 Impairment of financial assets [axis] Axis ifrs-full:ImpairmentOfFinancialAssetsAxis
893 Entity's total for impairment of financial assets [member] Member ifrs-full:EntitysTotalForImpairmentOfFinancialAssetsMember
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895 Disclosure of financial assets that are either past due or impaired [line items] LineItems ifrs-full:DisclosureOfFinancialAssetsThatAreEitherPastDueOrImpairedLineItems
896 Trade and unbilled receivables Concept (Monetary) As Of Debit mrus:TradeAndUnbilledReceivables
897 186 - Disclosure - Financial Instrument - Additional Information (Detail) Network

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898 Implied Table Table

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899 Disclosure of detailed information about financial instruments [abstract] Abstract ifrs-full:DisclosureOfFinancialInstrumentsAbstract
900 Allowance for impairment Concept (Monetary) For Period Debit mrus:AllowanceForImpairment
901 Weighted average remaining days to maturity for investment portfolio Concept (xbrli:durationItemType) For Period mrus:WeightedAverageRemainingMaturityPeriodForInvestmentPortfolio
902 187 - Disclosure - Financial Instruments - Summary of Maturity Analysis For Nonderivative Financial Liabilities (Detail) Network

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903 Disclosure of maturity analysis for non-derivative financial liabilities [table] Table

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904 Maturity [axis] Axis ifrs-full:MaturityAxis
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906 Less than one year [member] Member ifrs-full:NotLaterThanOneYearMember
907 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
908 Carrying amount [member] Member ifrs-full:CarryingAmountMember
909 Carrying amount and value [member] Member mrus:CarryingAmountAndValueMember
910 Disclosure of maturity analysis for non-derivative financial liabilities [line items] LineItems ifrs-full:DisclosureOfMaturityAnalysisForNonderivativeFinancialLiabilitiesLineItems
911 Trade payables Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherPayablesUndiscountedCashFlows
912 Other liabilities and accruals Concept (Monetary) As Of Credit mrus:OtherLiabilitiesAndAccrualsUndiscountedCashFlows
913 Non-derivative financial liabilities undiscounted cash flows Concept (Monetary) As Of Credit ifrs-full:NonderivativeFinancialLiabilitiesUndiscountedCashFlows
914 188 - Disclosure - Financial Instruments - Summary of Sensitivity Analysis for Change in Primary Currency Exposure (Detail) Network

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915 Disclosure of nature and extent of risks arising from financial instruments [table] Table

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917 All Currencies [Domain] Member currency:AllCurrenciesDomain
918 USD [member] Member currency:USD
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921 Currency risk [member] Member ifrs-full:CurrencyRiskMember
922 Types of interest rates [axis] Axis ifrs-full:TypesOfInterestRatesAxis
923 Interest rate types [member] Member ifrs-full:InterestRateTypesMember
924 5% increase in functional rate [member] Member mrus:FivePercentageIncreaseInFunctionalRateMember
925 5% decrease in functional rate [member] Member mrus:FivePercentageDecreaseInFunctionalRateMember
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927 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
928 Cash and cash equivalents [member] Member mrus:CashAndCashEquivalents1Member
929 Investment [member] Member mrus:InvestmentMember
930 Trade and other receivables [member] Member mrus:TradeAndOtherReceivableMember
931 Other assets [member] Member ifrs-full:OtherAssetsMember
932 Taxes and social security liabilities [member] Member mrus:TaxesAndSocialSecurityLiabilitiesMember
933 Trade payables, other liabilities and accruals [member] Member mrus:TradePayablesOtherLiabilitiesAndAccrualsMember
934 Disclosure of nature and extent of risks arising from financial instruments [line items] LineItems ifrs-full:DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsLineItems
935 Balance Concept (Monetary) For Period Credit mrus:ForeignExchangeSensitivityEffectOnProfitBeforeTax
936 189 - Disclosure - Financial Instrument - Summary of Interest Bearing Financial Instruments (Detail) Network

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937 Disclosure of interest bearing financial instruments [table] Table

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938 Types of interest rates [axis] Axis ifrs-full:TypesOfInterestRatesAxis
939 Interest rate types [member] Member ifrs-full:InterestRateTypesMember
940 Variable rate instruments [member] Member ifrs-full:FloatingInterestRateMember
941 Disclosure of interest bearing financial instruments [line Items] LineItems mrus:DisclosureOfInterestBearingFinancialInstrumentsLineItems
942 Investments Concept (Monetary) As Of Debit ifrs-full:HeldtomaturityInvestments
943 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
944 190 - Disclosure - Board Compensation and Key Management Personnel - Summary on Charge to the Profit and Loss Statement (Detail) Network

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945 Disclosure charged to the profit and loss statement [table] Table

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946 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
947 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
948 Ton Logtenberg, CEO [member] Member mrus:TonLogtenbergCEOMember
949 Shelley Margetson, Former COO [member] Member mrus:ShelleyMargetsonFormerCOOMember
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951 Carrying amount [member] Member ifrs-full:CarryingAmountMember
952 Gross salary [member] Member mrus:GrossSalaryMember
953 Bonus [member] Member mrus:BonusMember
954 Pension [member] Member mrus:PensionMember
955 Option cost [member] Member mrus:OptionCostMember
956 Disclosure charged to the profit and loss statement [line Items] LineItems mrus:DisclosureChargedToTheProfitAndLossStatementLineItems
957 Directors remuneration expense Concept (Monetary) For Period Debit ifrs-full:DirectorsRemunerationExpense
958 191 - Disclosure - Board Compensation and Key Management Personnel - Summary on Charge to the Profit and Loss Statement (Parenthetical) (Detail) Network

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959 Disclosure charged to the profit and loss statement [table] Table

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960 Employee Benefit Scheme [axis] Axis mrus:EmployeeBenefitSchemeAxis
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962 Severance costs [member] Member mrus:SeveranceCostsMember
963 Disclosure charged to the profit and loss statement [line Items] LineItems mrus:DisclosureChargedToTheProfitAndLossStatementLineItems
964 Gross salary includes severance payments Concept (Monetary) For Period Debit ifrs-full:WagesAndSalaries
965 192 - Disclosure - Board Compensation and Key Management Personnel - Additional Information (Detail) Network

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966 Disclosure charged to the profit and loss statement [table] Table

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967 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
968 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
969 Ton Logtenberg, CEO [member] Member mrus:TonLogtenbergCEOMember
970 Andres Sirulnik Chief Medical Officer [member] Member mrus:AndresSirulnikChiefMedicalOfficerMember
971 John Crowley Chief Financial Officer [member] Member mrus:JohnCrowleyChiefFinancialOfficerMember
972 Peter Silverman Senior Vice President [member] Member mrus:PeterSilvermanSeniorVicePresidentMember
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974 Number of options allocated to Chief Medical Officer Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsGrantedInSharebasedPaymentArrangement
975 Number of options held by the chief executive officers Concept (Decimal) For Period mrus:NumberOfOptionsHeldByTheChiefExecutiveOfficers
976 Average exercise price per share held by the chief executive officers Concept (Share) For Period mrus:AverageExercisePricePerShareHeldByTheChiefExecutiveOfficers
977 Number of RSU held Concept (Decimal) For Period mrus:NumberOfOptionsOfOtherEquityInstrumentsHeldByTheChiefExecutiveOfficers
978 Exercise price per share Concept (Share) For Period mrus:ExercisePricePerShare
979 193 - Disclosure - Board Compensation and Key Management Personnel - Summary of Related Party (Detail) Network

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980 Implied Table Table

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983 Post-employment benefits Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationPostemploymentBenefits
984 Other long-term benefits Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationOtherLongtermBenefits
985 Termination benefits Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationTerminationBenefits
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987 Total Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensation
988 194 - Disclosure - Board Compensation and Key Management Personnel - Summary of Consolidated Statement of Profit and Loss for the Remuneration of the (Former) Members of the Supervisory Board (Detail) Network

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989 Disclosure of options held by the members of supervisory board [table] Table

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990 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
991 Carrying amount [member] Member ifrs-full:CarryingAmountMember
992 Cash compensation [member] Member mrus:CashCompensationMember
993 Option cost [member] Member mrus:OptionCostMember
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997 Mark Iwicki [member] Member mrus:MarkIwickiMember
998 Len Kanavy [member] Member mrus:LenKanavyMember
999 Wolfgang Berthold [member] Member mrus:WolfgangBertholdMember
1000 Lionel Carnot [member] Member mrus:LionelCarnotMember
1001 John de Koning [member] Member mrus:JohnDeKoningMember
1002 Anand Mehra [member] Member mrus:AnandMehraMember
1003 Gregory Perry [member] Member mrus:GregoryPerryMember
1004 Disclosure of options held by the members of supervisory board [line Items] LineItems mrus:DisclosureOfOptionsHeldByTheMembersOfSupervisoryBoardLineItems
1005 Remuneration for former employees Concept (Monetary) For Period Debit mrus:RemunerationForFormerEmployees
1006 195 - Disclosure - Board Compensation and Key Management Personnel - Summary of Average Exercise Price Per Share Held by the Members of the Supervisory Board (Detail) Network

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1007 Disclosure of options held by the members of supervisory board [table] Table

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1008 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
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1012 Len Kanavy [member] Member mrus:LenKanavyMember
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1014 Lionel Carnot [member] Member mrus:LionelCarnotMember
1015 John de Koning [member] Member mrus:JohnDeKoningMember
1016 Anand Mehra [member] Member mrus:AnandMehraMember
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1018 Gabriele Dallmann [member] Member mrus:GabrieleDallmannMember
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1020 Number of options Concept (Decimal) For Period mrus:NumberOfOptionsHeldByTheMembersOfSupervisoryBoard
1021 Weighted average exercise price Concept (Share) For Period mrus:WeightedAverageExercisePricePerShareHeldByTheMembersOfTheSupervisoryBoard
1022 196 - Disclosure - Related Party Disclosures - Additional Information (Detail) Network

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1023 Disclosure of transactions between related parties [table] Table

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1026 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
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1029 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
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1031 Sofinnova Venture Partners Nine Limited Partnership [member] Member mrus:SofinnovaVenturePartnersNineLimitedPartnershipMember
1032 Biophrase BV [member] Member mrus:BiophraseBVMember
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1038 197 - Disclosure - Commitments and Contingencies - Additional Information (Detail) Network

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1039 Disclosure Of Commitments And Contingencies [table] Table

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1040 Non-adjusting events after reporting period [axis] Axis ifrs-full:NonadjustingEventsAfterReportingPeriodAxis
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1044 Types of contracts [axis] Axis ifrs-full:TypesOfContractsAxis
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1047 New leases agreement for additional corporate headquarters space member Member mrus:NewLeasesAgreementForAdditionalCorporateHeadquartersSpaceMember
1048 Regeneron Subscription Agreement [member] Member mrus:RegeneronSubscriptionAgreementMember
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1051 MIT Cambridge Real Estate LLC [member] Member mrus:MitCambridgeRealEstateLlcMember
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1053 Rental expense Per year Concept (Monetary) For Period Debit ifrs-full:RentalExpense
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1059 Purchase property, plant and equipment Concept (Monetary) For Period Credit mrus:PaymentOfPropertyPlantAndEquipment
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1061 Expert fees Concept (Monetary) As Of Debit mrus:LitigationSettlementsGrantedForExpertFees
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1068 198 - Disclosure - Commitments and Contingencies - Schedule of Future Minimum Lease Payments Under Lease (Detail) Network

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1069 Disclosure of finance lease and operating lease by lessee [table] Table

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1070 Maturity [axis] Axis ifrs-full:MaturityAxis
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1072 Less than one year [member] Member ifrs-full:NotLaterThanOneYearMember
1073 Between one and five years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanFiveYearsMember
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1075 Minimum lease payments payable under non cancellable operating lease Concept (Monetary) As Of Credit ifrs-full:MinimumLeasePaymentsPayableUnderNoncancellableOperatingLease
1076 199 - Disclosure - Subsequent Events - Additional Information (Detail) Network

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1077 Disclosure of Events After Reporting Period [table] Table

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1082 Square feet of office space under lease agreement Concept (num:areaItemType) For Period mrus:SquareFeetOfOfficeSpaceUnderLeaseAgreement
1083 Operating lease term of lease agreement Concept (xbrli:durationItemType) For Period mrus:OperatingLeaseTermOfLeaseAgreement
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