3.25.2 html 471 373 1 false 155 0 false 14 false false R1.htm 00090 - Document - Document and entity information Sheet http://www.nyxoah.com/20211231/role/DocumentDocumentAndEntityInformation Document and entity information Cover 1 false false R2.htm 00100 - Statement - INTERIM CONSOLIDATED STATEMENT OF FINANCIAL POSITION Sheet http://www.nyxoah.com/20211231/role/StatementInterimConsolidatedStatementOfFinancialPosition INTERIM CONSOLIDATED STATEMENT OF FINANCIAL POSITION Statements 2 false false R3.htm 00200 - Statement - INTERIM CONSOLIDATED STATEMENTS OF LOSS AND OTHER COMPREHENSIVE LOSS Sheet http://www.nyxoah.com/20211231/role/StatementInterimConsolidatedStatementsOfLossAndOtherComprehensiveLoss INTERIM CONSOLIDATED STATEMENTS OF LOSS AND OTHER COMPREHENSIVE LOSS Statements 3 false false R4.htm 00300 - Statement - INTERIM CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY Sheet http://www.nyxoah.com/20211231/role/StatementInterimConsolidatedStatementsOfChangesInEquity INTERIM CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY Statements 4 false false R5.htm 00400 - Statement - INTERIM CONSOLIDATED STATEMENTS OF CASH FLOWS Sheet http://www.nyxoah.com/20211231/role/StatementInterimConsolidatedStatementsOfCashFlows INTERIM CONSOLIDATED STATEMENTS OF CASH FLOWS Statements 5 false false R6.htm 10101 - Disclosure - General information Sheet http://www.nyxoah.com/20211231/role/DisclosureGeneralInformation General information Notes 6 false false R7.htm 10201 - Disclosure - Material accounting policies Sheet http://www.nyxoah.com/20211231/role/DisclosureMaterialAccountingPolicies Material accounting policies Notes 7 false false R8.htm 10301 - Disclosure - Critical accounting estimates and assumptions Sheet http://www.nyxoah.com/20211231/role/DisclosureCriticalAccountingEstimatesAndAssumptions Critical accounting estimates and assumptions Notes 8 false false R9.htm 10401 - Disclosure - Segment reporting Sheet http://www.nyxoah.com/role/DisclosureSegmentReporting Segment reporting Notes 9 false false R10.htm 10501 - Disclosure - Fair Value Sheet http://www.nyxoah.com/role/DisclosureFairValue Fair Value Notes 10 false false R11.htm 10601 - Disclosure - Subsidiaries Sheet http://www.nyxoah.com/role/DisclosureSubsidiaries Subsidiaries Notes 11 false false R12.htm 10701 - Disclosure - Property, Plant and Equipment Sheet http://www.nyxoah.com/20211231/role/DisclosurePropertyPlantAndEquipment Property, Plant and Equipment Notes 12 false false R13.htm 10801 - Disclosure - Intangible assets Sheet http://www.nyxoah.com/20211231/role/DisclosureIntangibleAssets Intangible assets Notes 13 false false R14.htm 10901 - Disclosure - Right of use assets and lease liabilities Sheet http://www.nyxoah.com/20211231/role/DisclosureRightOfUseAssetsAndLeaseLiabilities Right of use assets and lease liabilities Notes 14 false false R15.htm 11001 - Disclosure - Other long-term receivables Sheet http://www.nyxoah.com/role/DisclosureOtherLongTermReceivables Other long-term receivables Notes 15 false false R16.htm 11101 - Disclosure - Inventory Sheet http://www.nyxoah.com/20211231/role/DisclosureInventory Inventory Notes 16 false false R17.htm 11201 - Disclosure - Trade receivables, Contract assets and Other receivables Sheet http://www.nyxoah.com/20211231/role/DisclosureTradeReceivablesContractAssetsAndOtherReceivables Trade receivables, Contract assets and Other receivables Notes 17 false false R18.htm 11301 - Disclosure - Other current assets Sheet http://www.nyxoah.com/20211231/role/DisclosureOtherCurrentAssets Other current assets Notes 18 false false R19.htm 11401 - Disclosure - Cash and cash equivalents Sheet http://www.nyxoah.com/20211231/role/DisclosureCashAndCashEquivalents Cash and cash equivalents Notes 19 false false R20.htm 11501 - Disclosure - Financial assets Sheet http://www.nyxoah.com/role/DisclosureFinancialAssets Financial assets Notes 20 false false R21.htm 11601 - Disclosure - Share Capital, Share Premium, Reserves Sheet http://www.nyxoah.com/20211231/role/DisclosureShareCapitalSharePremiumReserves Share Capital, Share Premium, Reserves Notes 21 false false R22.htm 11701 - Disclosure - Share-Based compensation Sheet http://www.nyxoah.com/20211231/role/DisclosureShareBasedCompensation Share-Based compensation Notes 22 false false R23.htm 11801 - Disclosure - Financial Debt Sheet http://www.nyxoah.com/20211231/role/DisclosureFinancialDebt Financial Debt Notes 23 false false R24.htm 11901 - Disclosure - Provisions Sheet http://www.nyxoah.com/role/DisclosureProvisions Provisions Notes 24 false false R25.htm 12001 - Disclosure - Trade payables Sheet http://www.nyxoah.com/20211231/role/DisclosureTradePayables Trade payables Notes 25 false false R26.htm 12101 - Disclosure - Income taxes and deferred taxes Sheet http://www.nyxoah.com/20211231/role/DisclosureIncomeTaxesAndDeferredTaxes Income taxes and deferred taxes Notes 26 false false R27.htm 12201 - Disclosure - Other liabilities Sheet http://www.nyxoah.com/20211231/role/DisclosureOtherLiabilities Other liabilities Notes 27 false false R28.htm 12301 - Disclosure - Foreign currency swaps and forwards Sheet http://www.nyxoah.com/role/DisclosureForeignCurrencySwapsAndForwards Foreign currency swaps and forwards Notes 28 false false R29.htm 12401 - Disclosure - Results of operation Sheet http://www.nyxoah.com/role/DisclosureResultsOfOperation Results of operation Notes 29 false false R30.htm 12501 - Disclosure - Employee Benefits Sheet http://www.nyxoah.com/20211231/role/DisclosureEmployeeBenefits Employee Benefits Notes 30 false false R31.htm 12601 - Disclosure - Financial income Sheet http://www.nyxoah.com/20211231/role/DisclosureFinancialIncome Financial income Notes 31 false false R32.htm 12701 - Disclosure - Financial Expense Sheet http://www.nyxoah.com/20211231/role/DisclosureFinancialExpense Financial Expense Notes 32 false false R33.htm 12801 - Disclosure - Earnings/ (Loss) Per Share (EPS) Sheet http://www.nyxoah.com/role/DisclosureEarningsLossPerShareEps Earnings/ (Loss) Per Share (EPS) Notes 33 false false R34.htm 12901 - Disclosure - Other commitments Sheet http://www.nyxoah.com/role/DisclosureOtherCommitments Other commitments Notes 34 false false R35.htm 13001 - Disclosure - Related Party Transactions Sheet http://www.nyxoah.com/role/DisclosureRelatedPartyTransactions Related Party Transactions Notes 35 false false R36.htm 13101 - Disclosure - Events after the Balance-Sheet Date Sheet http://www.nyxoah.com/role/DisclosureEventsAfterBalanceSheetDate Events after the Balance-Sheet Date Notes 36 false false R37.htm 20202 - Disclosure - Material accounting policies (Policies) Sheet http://www.nyxoah.com/20211231/role/DisclosureMaterialAccountingPoliciesPolicies Material accounting policies (Policies) Policies 37 false false R38.htm 30503 - Disclosure - Fair Value (Tables) Sheet http://www.nyxoah.com/role/DisclosureFairValueTables Fair Value (Tables) Tables http://www.nyxoah.com/role/DisclosureFairValue 38 false false R39.htm 30803 - Disclosure - Intangible assets (Tables) Sheet http://www.nyxoah.com/20211231/role/DisclosureIntangibleAssetsTables Intangible assets (Tables) Tables http://www.nyxoah.com/20211231/role/DisclosureIntangibleAssets 39 false false R40.htm 31003 - Disclosure - Other long-term receivables (Tables) Sheet http://www.nyxoah.com/role/DisclosureOtherLongTermReceivablesTables Other long-term receivables (Tables) Tables http://www.nyxoah.com/role/DisclosureOtherLongTermReceivables 40 false false R41.htm 31103 - Disclosure - Inventory (Tables) Sheet http://www.nyxoah.com/20211231/role/DisclosureInventoryTables Inventory (Tables) Tables http://www.nyxoah.com/20211231/role/DisclosureInventory 41 false false R42.htm 31203 - Disclosure - Trade receivables, Contract assets and Other receivables (Tables) Sheet http://www.nyxoah.com/20211231/role/DisclosureTradeReceivablesContractAssetsAndOtherReceivablesTables Trade receivables, Contract assets and Other receivables (Tables) Tables http://www.nyxoah.com/20211231/role/DisclosureTradeReceivablesContractAssetsAndOtherReceivables 42 false false R43.htm 31303 - Disclosure - Other current assets (Tables) Sheet http://www.nyxoah.com/role/DisclosureOtherCurrentAssetsTables Other current assets (Tables) Tables http://www.nyxoah.com/20211231/role/DisclosureOtherCurrentAssets 43 false false R44.htm 31403 - Disclosure - Cash and cash equivalents (Tables) Sheet http://www.nyxoah.com/20211231/role/DisclosureCashAndCashEquivalentsTables Cash and cash equivalents (Tables) Tables http://www.nyxoah.com/20211231/role/DisclosureCashAndCashEquivalents 44 false false R45.htm 31603 - Disclosure - Share Capital, Share Premium, Reserves (Tables) Sheet http://www.nyxoah.com/20211231/role/DisclosureShareCapitalSharePremiumReservesTables Share Capital, Share Premium, Reserves (Tables) Tables http://www.nyxoah.com/20211231/role/DisclosureShareCapitalSharePremiumReserves 45 false false R46.htm 31703 - Disclosure - Share-Based compensation (Tables) Sheet http://www.nyxoah.com/20211231/role/DisclosureShareBasedCompensationTables Share-Based compensation (Tables) Tables http://www.nyxoah.com/20211231/role/DisclosureShareBasedCompensation 46 false false R47.htm 31803 - Disclosure - Financial Debt (Tables) Sheet http://www.nyxoah.com/20211231/role/DisclosureFinancialDebtTables Financial Debt (Tables) Tables http://www.nyxoah.com/20211231/role/DisclosureFinancialDebt 47 false false R48.htm 31903 - Disclosure - Provisions (Tables) Sheet http://www.nyxoah.com/role/DisclosureProvisionsTables Provisions (Tables) Tables http://www.nyxoah.com/role/DisclosureProvisions 48 false false R49.htm 32003 - Disclosure - Trade payables (Tables) Sheet http://www.nyxoah.com/20211231/role/DisclosureTradePayablesTables Trade payables (Tables) Tables http://www.nyxoah.com/20211231/role/DisclosureTradePayables 49 false false R50.htm 32103 - Disclosure - Income taxes and deferred taxes (Tables) Sheet http://www.nyxoah.com/20211231/role/DisclosureIncomeTaxesAndDeferredTaxesTables Income taxes and deferred taxes (Tables) Tables http://www.nyxoah.com/20211231/role/DisclosureIncomeTaxesAndDeferredTaxes 50 false false R51.htm 32203 - Disclosure - Other liabilities (Tables) Sheet http://www.nyxoah.com/20211231/role/DisclosureOtherLiabilitiesTables Other liabilities (Tables) Tables http://www.nyxoah.com/20211231/role/DisclosureOtherLiabilities 51 false false R52.htm 32303 - Disclosure - Foreign currency swaps and forwards (Tables) Sheet http://www.nyxoah.com/role/DisclosureForeignCurrencySwapsAndForwardsTables Foreign currency swaps and forwards (Tables) Tables http://www.nyxoah.com/role/DisclosureForeignCurrencySwapsAndForwards 52 false false R53.htm 32403 - Disclosure - Results of operation (Tables) Sheet http://www.nyxoah.com/role/DisclosureResultsOfOperationTables Results of operation (Tables) Tables http://www.nyxoah.com/role/DisclosureResultsOfOperation 53 false false R54.htm 32503 - Disclosure - Employee Benefits (Tables) Sheet http://www.nyxoah.com/20211231/role/DisclosureEmployeeBenefitsTables Employee Benefits (Tables) Tables http://www.nyxoah.com/20211231/role/DisclosureEmployeeBenefits 54 false false R55.htm 32603 - Disclosure - Financial income (Tables) Sheet http://www.nyxoah.com/20211231/role/DisclosureFinancialIncomeTables Financial income (Tables) Tables http://www.nyxoah.com/20211231/role/DisclosureFinancialIncome 55 false false R56.htm 32703 - Disclosure - Financial Expense (Tables) Sheet http://www.nyxoah.com/20211231/role/DisclosureFinancialExpenseTables Financial Expense (Tables) Tables http://www.nyxoah.com/20211231/role/DisclosureFinancialExpense 56 false false R57.htm 32803 - Disclosure - Earnings/ (Loss) Per Share (EPS) (Tables) Sheet http://www.nyxoah.com/role/DisclosureEarningsLossPerShareEpsTables Earnings/ (Loss) Per Share (EPS) (Tables) Tables http://www.nyxoah.com/role/DisclosureEarningsLossPerShareEps 57 false false R58.htm 33003 - Disclosure - Related Party Transactions (Tables) Sheet http://www.nyxoah.com/role/DisclosureRelatedPartyTransactionsTables Related Party Transactions (Tables) Tables http://www.nyxoah.com/role/DisclosureRelatedPartyTransactions 58 false false R59.htm 40201 - Disclosure - Material accounting policies (Details) Sheet http://www.nyxoah.com/role/DisclosureMaterialAccountingPoliciesDetails Material accounting policies (Details) Details http://www.nyxoah.com/20211231/role/DisclosureMaterialAccountingPoliciesPolicies 59 false false R60.htm 40401 - Disclosure - Segment Reporting (Details) Sheet http://www.nyxoah.com/role/DisclosureSegmentReportingDetails Segment Reporting (Details) Details 60 false false R61.htm 40501 - Disclosure - Fair value (Details) Sheet http://www.nyxoah.com/role/DisclosureFairValueDetails Fair value (Details) Details 61 false false R62.htm 40601 - Disclosure - Subsidiaries (Details) Sheet http://www.nyxoah.com/role/DisclosureSubsidiariesDetails Subsidiaries (Details) Details http://www.nyxoah.com/role/DisclosureSubsidiaries 62 false false R63.htm 40701 - Disclosure - Property, Plant and Equipment (Details) Sheet http://www.nyxoah.com/20211231/role/DisclosurePropertyPlantAndEquipmentDetails Property, Plant and Equipment (Details) Details http://www.nyxoah.com/20211231/role/DisclosurePropertyPlantAndEquipment 63 false false R64.htm 40801 - Disclosure - Intangible assets (Details) Sheet http://www.nyxoah.com/role/DisclosureIntangibleAssetsDetails Intangible assets (Details) Details http://www.nyxoah.com/20211231/role/DisclosureIntangibleAssetsTables 64 false false R65.htm 40802 - Disclosure - Intangible assets - Narrative (Details) Sheet http://www.nyxoah.com/20211231/role/DisclosureIntangibleAssetsNarrativeDetails Intangible assets - Narrative (Details) Details 65 false false R66.htm 40901 - Disclosure - Right of use assets and lease liabilities (Details) Sheet http://www.nyxoah.com/20211231/role/DisclosureRightOfUseAssetsAndLeaseLiabilitiesDetails Right of use assets and lease liabilities (Details) Details http://www.nyxoah.com/20211231/role/DisclosureRightOfUseAssetsAndLeaseLiabilities 66 false false R67.htm 41001 - Disclosure - Other long-term receivables (Details) Sheet http://www.nyxoah.com/role/DisclosureOtherLongTermReceivablesDetails Other long-term receivables (Details) Details http://www.nyxoah.com/role/DisclosureOtherLongTermReceivablesTables 67 false false R68.htm 41101 - Disclosure - Inventory (Details) Sheet http://www.nyxoah.com/role/DisclosureInventoryDetails Inventory (Details) Details http://www.nyxoah.com/20211231/role/DisclosureInventoryTables 68 false false R69.htm 41201 - Disclosure - Trade receivables, Contract assets and Other receivables (Details) Sheet http://www.nyxoah.com/role/DisclosureTradeReceivablesContractAssetsAndOtherReceivablesDetails Trade receivables, Contract assets and Other receivables (Details) Details http://www.nyxoah.com/20211231/role/DisclosureTradeReceivablesContractAssetsAndOtherReceivablesTables 69 false false R70.htm 41202 - Disclosure - Trade receivables, Contract assets and Other receivables - Additional information (Details) Sheet http://www.nyxoah.com/20211231/role/DisclosureTradeReceivablesContractAssetsAndOtherReceivablesAdditionalInformationDetails Trade receivables, Contract assets and Other receivables - Additional information (Details) Details 70 false false R71.htm 41301 - Disclosure - Other current assets (Details) Sheet http://www.nyxoah.com/20211231/role/DisclosureOtherCurrentAssetsDetails Other current assets (Details) Details http://www.nyxoah.com/role/DisclosureOtherCurrentAssetsTables 71 false false R72.htm 41302 - Disclosure - Other current assets - Additional information (Details) Sheet http://www.nyxoah.com/role/DisclosureOtherCurrentAssetsAdditionalInformationDetails Other current assets - Additional information (Details) Details 72 false false R73.htm 41401 - Disclosure - Cash and cash equivalents (Details) Sheet http://www.nyxoah.com/role/DisclosureCashAndCashEquivalentsDetails Cash and cash equivalents (Details) Details http://www.nyxoah.com/20211231/role/DisclosureCashAndCashEquivalentsTables 73 false false R74.htm 41402 - Disclosure - Cash and cash equivalents - Additional information (Details) Sheet http://www.nyxoah.com/role/DisclosureCashAndCashEquivalentsAdditionalInformationDetails Cash and cash equivalents - Additional information (Details) Details 74 false false R75.htm 41501 - Disclosure - Financial assets (Details) Sheet http://www.nyxoah.com/role/DisclosureFinancialAssetsDetails Financial assets (Details) Details http://www.nyxoah.com/role/DisclosureFinancialAssets 75 false false R76.htm 41601 - Disclosure - Share Capital, Share Premium, Reserves - Capital and share premium (Details) Sheet http://www.nyxoah.com/role/DisclosureShareCapitalSharePremiumReservesCapitalAndSharePremiumDetails Share Capital, Share Premium, Reserves - Capital and share premium (Details) Details 76 false false R77.htm 41602 - Disclosure - Share Capital, Share Premium, Reserves (Details) Sheet http://www.nyxoah.com/role/DisclosureShareCapitalSharePremiumReservesDetails Share Capital, Share Premium, Reserves (Details) Details http://www.nyxoah.com/20211231/role/DisclosureShareCapitalSharePremiumReservesTables 77 false false R78.htm 41603 - Disclosure - Share Capital, Share Premium, Reserves - Other comprehensive income (Details) Sheet http://www.nyxoah.com/role/DisclosureShareCapitalSharePremiumReservesOtherComprehensiveIncomeDetails Share Capital, Share Premium, Reserves - Other comprehensive income (Details) Details 78 false false R79.htm 41701 - Disclosure - Share-Based compensation - Equity-settled share-based payment transactions (Details) Sheet http://www.nyxoah.com/20211231/role/DisclosureShareBasedCompensationEquitySettledShareBasedPaymentTransactionsDetails Share-Based compensation - Equity-settled share-based payment transactions (Details) Details 79 false false R80.htm 41702 - Disclosure - Share-Based compensation - Black and Scholes model (Details) Sheet http://www.nyxoah.com/20211231/role/DisclosureShareBasedCompensationBlackAndScholesModelDetails Share-Based compensation - Black and Scholes model (Details) Details 80 false false R81.htm 41703 - Disclosure - Share-Based compensation - Equity-settled share-based payment transactions - RSU (Details) Sheet http://www.nyxoah.com/role/DisclosureShareBasedCompensationEquitySettledShareBasedPaymentTransactionsRsuDetails Share-Based compensation - Equity-settled share-based payment transactions - RSU (Details) Details 81 false false R82.htm 41801 - Disclosure - Financial Debt - Recoverable Cash Advances And Other Loans (Details) Sheet http://www.nyxoah.com/role/DisclosureFinancialDebtRecoverableCashAdvancesAndOtherLoansDetails Financial Debt - Recoverable Cash Advances And Other Loans (Details) Details 82 false false R83.htm 41802 - Disclosure - Financial Debt - Recoverable cash and cash advances received (Details) Sheet http://www.nyxoah.com/20211231/role/DisclosureFinancialDebtRecoverableCashAndCashAdvancesReceivedDetails Financial Debt - Recoverable cash and cash advances received (Details) Details 83 false false R84.htm 41803 - Disclosure - Financial Debt - Recoverable cash and cash advances overview (Details) Sheet http://www.nyxoah.com/role/DisclosureFinancialDebtRecoverableCashAndCashAdvancesOverviewDetails Financial Debt - Recoverable cash and cash advances overview (Details) Details 84 false false R85.htm 41804 - Disclosure - Financial debt - Changes in the recoverable cash advances (Details) Sheet http://www.nyxoah.com/20211231/role/DisclosureFinancialDebtChangesInRecoverableCashAdvancesDetails Financial debt - Changes in the recoverable cash advances (Details) Details 85 false false R86.htm 41805 - Disclosure - Financial Debt - Sensitivity analysis (Details) Sheet http://www.nyxoah.com/20211231/role/DisclosureFinancialDebtSensitivityAnalysisDetails Financial Debt - Sensitivity analysis (Details) Details 86 false false R87.htm 41806 - Disclosure - Financial Debt - Additional information (Details) Sheet http://www.nyxoah.com/20211231/role/DisclosureFinancialDebtAdditionalInformationDetails Financial Debt - Additional information (Details) Details 87 false false R88.htm 41807 - Disclosure - Financial Debt - Financial debt related to loan facility agreement and synthetic warrants agreement (Details) Sheet http://www.nyxoah.com/role/DisclosureFinancialDebtFinancialDebtRelatedToLoanFacilityAgreementAndSyntheticWarrantsAgreementDetails Financial Debt - Financial debt related to loan facility agreement and synthetic warrants agreement (Details) Details 88 false false R89.htm 41808 - Disclosure - Financial Debt - Change in loan facility, prepayment option and synthetic warrants (Details) Sheet http://www.nyxoah.com/role/DisclosureFinancialDebtChangeInLoanFacilityPrepaymentOptionAndSyntheticWarrantsDetails Financial Debt - Change in loan facility, prepayment option and synthetic warrants (Details) Details 89 false false R90.htm 41901 - Disclosure - Provisions (Details) Sheet http://www.nyxoah.com/role/DisclosureProvisionsDetails Provisions (Details) Details http://www.nyxoah.com/role/DisclosureProvisionsTables 90 false false R91.htm 42001 - Disclosure - Trade payables (Details) Sheet http://www.nyxoah.com/20211231/role/DisclosureTradePayablesDetails Trade payables (Details) Details http://www.nyxoah.com/20211231/role/DisclosureTradePayablesTables 91 false false R92.htm 42002 - Disclosure - Trade payables - Additional information (Details) Sheet http://www.nyxoah.com/20211231/role/DisclosureTradePayablesAdditionalInformationDetails Trade payables - Additional information (Details) Details 92 false false R93.htm 42101 - Disclosure - Income taxes and deferred taxes (Details) Sheet http://www.nyxoah.com/20211231/role/DisclosureIncomeTaxesAndDeferredTaxesDetails Income taxes and deferred taxes (Details) Details http://www.nyxoah.com/20211231/role/DisclosureIncomeTaxesAndDeferredTaxesTables 93 false false R94.htm 42102 - Disclosure - Income taxes and deferred taxes - Additional information (Details) Sheet http://www.nyxoah.com/20211231/role/DisclosureIncomeTaxesAndDeferredTaxesAdditionalInformationDetails Income taxes and deferred taxes - Additional information (Details) Details 94 false false R95.htm 42201 - Disclosure - Other liabilities (Details) Sheet http://www.nyxoah.com/role/DisclosureOtherLiabilitiesDetails Other liabilities (Details) Details http://www.nyxoah.com/20211231/role/DisclosureOtherLiabilitiesTables 95 false false R96.htm 42202 - Disclosure - Other payables - Additional information (Details) Sheet http://www.nyxoah.com/20211231/role/DisclosureOtherPayablesAdditionalInformationDetails Other payables - Additional information (Details) Details 96 false false R97.htm 42301 - Disclosure - Foreign currency swaps and forwards - notional amounts (Details) Sheet http://www.nyxoah.com/role/DisclosureForeignCurrencySwapsAndForwardsNotionalAmountsDetails Foreign currency swaps and forwards - notional amounts (Details) Details 97 false false R98.htm 42302 - Disclosure - Foreign currency swaps and forwards - financial instruments Fair value (Details) Sheet http://www.nyxoah.com/20211231/role/DisclosureForeignCurrencySwapsAndForwardsFinancialInstrumentsFairValueDetails Foreign currency swaps and forwards - financial instruments Fair value (Details) Details 98 false false R99.htm 42303 - Disclosure - Foreign currency swaps and forwards - financial instruments (Details) Sheet http://www.nyxoah.com/20211231/role/DisclosureForeignCurrencySwapsAndForwardsFinancialInstrumentsDetails Foreign currency swaps and forwards - financial instruments (Details) Details 99 false false R100.htm 42401 - Disclosure - Results of operation - Revenue and Cost of goods sold (Details) Sheet http://www.nyxoah.com/role/DisclosureResultsOfOperationRevenueAndCostOfGoodsSoldDetails Results of operation - Revenue and Cost of goods sold (Details) Details 100 false false R101.htm 42402 - Disclosure - Results of operation - Operating expenses (Details) Sheet http://www.nyxoah.com/role/DisclosureResultsOfOperationOperatingExpensesDetails Results of operation - Operating expenses (Details) Details 101 false false R102.htm 42403 - Disclosure - Results of operation - Research and development expenses (Details) Sheet http://www.nyxoah.com/role/DisclosureResultsOfOperationResearchAndDevelopmentExpensesDetails Results of operation - Research and development expenses (Details) Details 102 false false R103.htm 42404 - Disclosure - Results of operation - Selling, General and Administrative expenses (Details) Sheet http://www.nyxoah.com/role/DisclosureResultsOfOperationSellingGeneralAndAdministrativeExpensesDetails Results of operation - Selling, General and Administrative expenses (Details) Details 103 false false R104.htm 42405 - Disclosure - Results of operation - Other operating expenses (Details) Sheet http://www.nyxoah.com/role/DisclosureResultsOfOperationOtherOperatingExpensesDetails Results of operation - Other operating expenses (Details) Details 104 false false R105.htm 42501 - Disclosure - Employee Benefits (Details) Sheet http://www.nyxoah.com/role/DisclosureEmployeeBenefitsDetails Employee Benefits (Details) Details http://www.nyxoah.com/20211231/role/DisclosureEmployeeBenefitsTables 105 false false R106.htm 42502 - Disclosure - Employee Benefits - Analysis of expenses (Details) Sheet http://www.nyxoah.com/20211231/role/DisclosureEmployeeBenefitsAnalysisOfExpensesDetails Employee Benefits - Analysis of expenses (Details) Details 106 false false R107.htm 42601 - Disclosure - Financial income (Details) Sheet http://www.nyxoah.com/20211231/role/DisclosureFinancialIncomeDetails Financial income (Details) Details http://www.nyxoah.com/20211231/role/DisclosureFinancialIncomeTables 107 false false R108.htm 42602 - Disclosure - Financial income - Additional information (Details) Sheet http://www.nyxoah.com/20211231/role/DisclosureFinancialIncomeAdditionalInformationDetails Financial income - Additional information (Details) Details 108 false false R109.htm 42701 - Disclosure - Financial Expense (Details) Sheet http://www.nyxoah.com/20211231/role/DisclosureFinancialExpenseDetails Financial Expense (Details) Details http://www.nyxoah.com/20211231/role/DisclosureFinancialExpenseTables 109 false false R110.htm 42702 - Disclosure - Financial Expense - Additional information (Details) Sheet http://www.nyxoah.com/role/DisclosureFinancialExpenseAdditionalInformationDetails Financial Expense - Additional information (Details) Details 110 false false R111.htm 42801 - Disclosure - Earnings/ (Loss) Per Share (EPS) (Details) Sheet http://www.nyxoah.com/20211231/role/DisclosureEarningsLossPerShareEpsDetails Earnings/ (Loss) Per Share (EPS) (Details) Details http://www.nyxoah.com/role/DisclosureEarningsLossPerShareEpsTables 111 false false R112.htm 42802 - Disclosure - Earnings/ (Loss) Per Share (EPS) - Basic and diluted (Details) Sheet http://www.nyxoah.com/20211231/role/DisclosureEarningsLossPerShareEpsBasicAndDilutedDetails Earnings/ (Loss) Per Share (EPS) - Basic and diluted (Details) Details http://www.nyxoah.com/role/DisclosureEarningsLossPerShareEpsTables 112 false false R113.htm 42901 - Disclosure - Other commitments (Details) Sheet http://www.nyxoah.com/role/DisclosureOtherCommitmentsDetails Other commitments (Details) Details http://www.nyxoah.com/role/DisclosureOtherCommitments 113 false false R114.htm 43001 - Disclosure - Related Party Transactions - Remuneration of key management (Details) Sheet http://www.nyxoah.com/role/DisclosureRelatedPartyTransactionsRemunerationOfKeyManagementDetails Related Party Transactions - Remuneration of key management (Details) Details 114 false false R115.htm 43002 - Disclosure - Related Party Transactions - Transactions with non-executive directors and shareholders (Details) Sheet http://www.nyxoah.com/20211231/role/DisclosureRelatedPartyTransactionsTransactionsWithNonExecutiveDirectorsAndShareholdersDetails Related Party Transactions - Transactions with non-executive directors and shareholders (Details) Details 115 false false R116.htm 43003 - Disclosure - Related Party Transactions - Additional information (Details) Sheet http://www.nyxoah.com/role/DisclosureRelatedPartyTransactionsAdditionalInformationDetails Related Party Transactions - Additional information (Details) Details 116 false false All Reports Book All Reports nyxh-20250630.xsd nyxh-20250630_cal.xml nyxh-20250630_def.xml nyxh-20250630_lab.xml nyxh-20250630_pre.xml nyxh-20250630x6k.htm nyxh-20250630xex99d2.htm http://xbrl.sec.gov/dei/2024 https://xbrl.ifrs.org/taxonomy/2024-03-27/ifrs-full true true