DBV TECHNOLOGIES S.A. (SEC Filing Page | XBRL Cloud Viewer | XBRL Instance)

Line Label Object Class Period Type Balance Report ElementName
1 1001 - Document - Document and Entity Information Network

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2 Implied Table Table

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3 Document and entity information [abstract] Abstract dbvt:DocumentAndEntityInformationAbstract
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 Filer Category Concept (Filer Category) For Period dei:EntityFilerCategory
16 Entity Emerging Growth Company Concept (Yes/No) For Period dei:EntityEmergingGrowthCompany
17 Entity Shell Company Concept (Yes/No) For Period dei:EntityShellCompany
18 Entity Common Stock, Shares Outstanding Concept (Shares) As Of dei:EntityCommonStockSharesOutstanding
19 1003 - Statement - Consolidated Statements of Financial Position Network

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 http://www.dbv-technologies.com/taxonomy/role/StatementOfFinancialPositionCurrentNonCurrent-210000
20 Implied Table Table

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21 Statement of financial position [abstract] Abstract ifrs-full:StatementOfFinancialPositionAbstract
22 ASSETS Abstract ifrs-full:AssetsAbstract
23 Non-Current assets Abstract ifrs-full:NoncurrentAssetsAbstract
24 Intangible assets Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsOtherThanGoodwill
25 Property, plant, and equipment Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
26 Other non-current financial assets Concept (Monetary) As Of Debit ifrs-full:OtherNoncurrentFinancialAssets
27 Total non-current assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssets
28 Current assets Abstract ifrs-full:CurrentAssetsAbstract
29 Inventories Concept (Monetary) As Of Debit ifrs-full:Inventories
30 Customer accounts receivable and related receivables Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherCurrentReceivables
31 Other current assets Concept (Monetary) As Of Debit ifrs-full:OtherCurrentAssets
32 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
33 Total current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
34 TOTAL ASSETS Concept (Monetary) As Of Debit ifrs-full:Assets
35 LIABILITIES AND SHAREHOLDERS' EQUITY Abstract ifrs-full:LiabilitiesAbstract
36 Shareholders' equity Abstract ifrs-full:EquityAbstract
37 Share Capital Concept (Monetary) As Of Credit ifrs-full:IssuedCapital
38 Premiums related to the Share Capital Concept (Monetary) As Of Credit ifrs-full:SharePremium
39 Reserves Concept (Monetary) As Of Credit ifrs-full:CapitalReserve
40 Net (loss) Concept (Monetary) As Of Credit dbvt:AdditionToEquityIncomeLoss
41 Total shareholders' equity Concept (Monetary) As Of Credit ifrs-full:Equity
42 Non-current liabilities Abstract ifrs-full:NoncurrentLiabilitiesAbstract
43 Long-term financial debt Concept (Monetary) As Of Credit ifrs-full:NoncurrentFinancialLiabilities
44 Non-current provisions Concept (Monetary) As Of Credit ifrs-full:NoncurrentProvisions
45 Other non-current liabilities Concept (Monetary) As Of Credit ifrs-full:OtherNoncurrentLiabilities
46 Total non-current liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentLiabilities
47 Current liabilities Abstract ifrs-full:CurrentLiabilitiesAbstract
48 Bank overdrafts Concept (Monetary) As Of Credit ifrs-full:BankOverdraftsClassifiedAsCashEquivalents
49 Short-term financial debt Concept (Monetary) As Of Credit ifrs-full:CurrentFinancialLiabilities
50 Current provisions Concept (Monetary) As Of Credit ifrs-full:CurrentProvisions
51 Supplier accounts payable Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayablesToTradeSuppliers
52 Other current liabilities Concept (Monetary) As Of Credit ifrs-full:OtherCurrentLiabilities
53 Total current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
54 TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY Concept (Monetary) As Of Credit ifrs-full:EquityAndLiabilities
55 1004 - Statement - Consolidated Statements of (Loss) Network

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56 Implied Table Table

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57 Profit or loss [abstract] Abstract ifrs-full:IncomeStatementAbstract
58 Operating income Abstract dbvt:OperatingIncomeAbstract
59 Revenues Concept (Monetary) For Period Credit ifrs-full:RevenueFromSaleOfGoods
60 Other income Concept (Monetary) For Period Credit ifrs-full:OtherRevenue
61 Total income Concept (Monetary) For Period Credit ifrs-full:Revenue
62 Operating expenses Abstract ifrs-full:ExpenseByNatureAbstract
63 Cost of goods sold Concept (Monetary) For Period Debit ifrs-full:CostOfMerchandiseSold
64 Research & Development Concept (Monetary) For Period Debit ifrs-full:ResearchAndDevelopmentExpense
65 Sales & Marketing Concept (Monetary) For Period Debit ifrs-full:SalesAndMarketingExpense
66 General & Administrative Concept (Monetary) For Period Debit ifrs-full:SellingGeneralAndAdministrativeExpense
67 Total expenses Concept (Monetary) For Period Debit ifrs-full:ExpenseByNature
68 Operating (loss) Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromOperatingActivities
69 Financial revenues Concept (Monetary) For Period Credit ifrs-full:FinanceIncome
70 Financial expenses Concept (Monetary) For Period Debit ifrs-full:FinanceCosts
71 Financial profit (loss) Concept (Monetary) For Period Credit ifrs-full:FinanceIncomeCost
72 Income tax Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
73 Net (loss) Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromContinuingOperations
74 Basic/diluted (loss) per share (€/share) Concept (Share) For Period ifrs-full:BasicAndDilutedEarningsLossPerShareFromContinuingOperations
75 1005 - Statement - Consolidated Statements of Comprehensive (Loss) Network

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76 Implied Table Table

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77 Statement of comprehensive income [abstract] Abstract ifrs-full:StatementOfComprehensiveIncomeAbstract
78 Net (loss) Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
79 Actuarial gains and losses on employee benefits, net of corporate tax Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans
80 Profit (loss) directly recognized in shareholders' equity Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax
81 Other comprehensive income Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax
82 Total comprehensive (loss) Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
83 1006 - Statement - Consolidated Statements of Cash Flows Network

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84 Implied Table Table

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85 Statement of cash flows [abstract] Abstract ifrs-full:StatementOfCashFlowsAbstract
86 Net (loss) for the period Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
87 Reconciliation of the net (loss) and the cash used operating activities: Abstract ifrs-full:AdjustmentsForReconcileProfitLossAbstract
88 Cash flows used in operating activities: Abstract ifrs-full:CashFlowsFromUsedInOperatingActivitiesAbstract
89 Amortization and provision Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForAmortisationExpense
90 Retirement pension obligations Concept (Monetary) For Period Debit ifrs-full:PostemploymentBenefitExpenseDefinedBenefitPlans
91 Expenses related to share-based payments Concept (Monetary) For Period Debit ifrs-full:ExpenseFromSharebasedPaymentTransactionsWithEmployees
92 Other elements Concept (Monetary) For Period Debit ifrs-full:OtherAdjustmentsForNoncashItems
93 Operating cash flows before change in working capital Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital
94 Inventories Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInInventories
95 Customer accounts receivable Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInTradeAccountReceivable
96 Other current assets Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInOtherCurrentAssets
97 Supplier accounts payable Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInTradeAccountPayable
98 Other current and non-current liabilities Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInOtherLiabilities
99 Change in working capital requirement Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseInWorkingCapital
100 Net cash flow used in operating activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperatingActivities
101 Cash flows used in investing activities: Abstract ifrs-full:CashFlowsFromUsedInInvestingActivitiesAbstract
102 Acquisitions of property, plant, and equipment Concept (Monetary) For Period Credit ifrs-full:PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities
103 Acquisitions of intangible assets Concept (Monetary) For Period Credit ifrs-full:PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities
104 Acquisitions of non-current financial assets Concept (Monetary) For Period Credit ifrs-full:PurchaseOfOtherLongtermAssetsClassifiedAsInvestingActivities
105 Net cash flows used in investing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInInvestingActivities
106 Cash flows provided by financing activities: Abstract ifrs-full:CashFlowsFromUsedInFinancingActivitiesAbstract
107 (Decrease) in conditional advances Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfBorrowingsClassifiedAsFinancingActivities
108 Treasury shares Concept (Monetary) For Period Credit ifrs-full:PaymentsToAcquireOrRedeemEntitysShares
109 Capital increases, net of transaction costs Concept (Monetary) For Period Debit ifrs-full:ProceedsFromIssuingShares
110 Other cash flows related to financing activities Concept (Monetary) For Period Debit ifrs-full:OtherInflowsOutflowsOfCashClassifiedAsFinancingActivities
111 Net cash flows provided by financing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInFinancingActivities
112 (Decrease) in cash Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges
113 Net Cash and cash equivalents at the beginning of the period Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
114 Impact of exchange rate fluctuations Concept (Monetary) For Period Debit ifrs-full:EffectOfExchangeRateChangesOnCashAndCashEquivalents
115 Net cash and cash equivalents at the close of the period Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
116 1007 - Statement - Consolidated Statements of Changes in Shareholder's Equity Network

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117 Statement of changes in equity [table] Table

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 ifrs-full:StatementOfChangesInEquityTable
118 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
119 Equity [member] Member ifrs-full:EquityMember
120 Share capital [Member] Member ifrs-full:IssuedCapitalMember
121 Share premium [Member] Member ifrs-full:SharePremiumMember
122 Reserve [Member] Member ifrs-full:OtherReservesMember
123 Profit (loss) [Member] Member ifrs-full:RetainedEarningsMember
124 Statement of changes in equity [line items] LineItems ifrs-full:StatementOfChangesInEquityLineItems
125 Beginning balance Concept (Monetary) As Of Credit ifrs-full:Equity
126 Beginning balance Concept (Shares) As Of ifrs-full:NumberOfSharesOutstanding
127 Net (loss) Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromContinuingOperations
128 Foreign exchange translation Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation
129 Profit (loss) directly recognized in shareholders' equity Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax
130 Total comprehensive (loss) Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
131 Allocation of prior (loss) Concept (Monetary) For Period Credit dbvt:AllocationOfPriorLoss
132 Increase in capital Concept (Monetary) For Period Credit ifrs-full:IssueOfEquity
133 Increase in capital, shares Concept (Shares) For Period ifrs-full:IncreaseDecreaseInNumberOfSharesOutstanding
134 Treasury shares Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughTreasuryShareTransactions
135 Issue of share warrants Concept (Monetary) For Period Debit dbvt:IssueOfShareWarrants
136 Share-based payments Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughSharebasedPaymentTransactions
137 Ending balance Concept (Monetary) As Of Credit ifrs-full:Equity
138 Ending balance Concept (Shares) As Of ifrs-full:NumberOfSharesOutstanding
139 1008 - Disclosure - The Company Network

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140 Implied Table Table

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141 Text block [abstract] Abstract dbvt:TextBlockAbstract
142 The Company Concept (Text Block (HTML)) For Period dbvt:DisclosureOfActivitiesOfCompanyExplanatory
143 1009 - Disclosure - General Information and Statement of Compliance Network

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144 Implied Table Table

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145 Text block [abstract] Abstract dbvt:TextBlockAbstract
146 General Information and Statement of Compliance Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfGeneralInformationAboutFinancialStatementsExplanatory
147 1010 - Disclosure - Accounting Principles Network

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148 Implied Table Table

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149 Text block [abstract] Abstract dbvt:TextBlockAbstract
150 Accounting Principles Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSummaryOfSignificantAccountingPoliciesExplanatory
151 1011 - Disclosure - Intangible Assets Network

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152 Implied Table Table

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153 Text block [abstract] Abstract dbvt:TextBlockAbstract
154 Intangible Assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfIntangibleAssetsExplanatory
155 1012 - Disclosure - Property, Plant, and Equipment Network

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156 Implied Table Table

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157 Text block [abstract] Abstract dbvt:TextBlockAbstract
158 Property, Plant, and Equipment Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfPropertyPlantAndEquipmentExplanatory
159 1013 - Disclosure - Non-Current Financial Assets Network

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160 Implied Table Table

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161 Text block [abstract] Abstract dbvt:TextBlockAbstract
162 Non-Current Financial Assets Concept (Text Block (HTML)) For Period dbvt:DisclosureOfNoncurrentFinancialAssetsExplanatory
163 1014 - Disclosure - Inventories and Work in Progress Network

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164 Implied Table Table

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165 Text block [abstract] Abstract dbvt:TextBlockAbstract
166 Inventories and Work in Progress Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInventoriesExplanatory
167 1015 - Disclosure - Customer Accounts Receivable and Other Current Assets Network

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168 Implied Table Table

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169 Text block [abstract] Abstract dbvt:TextBlockAbstract
170 Customer Accounts Receivable and Other Current Assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTradeAndOtherReceivablesExplanatory
171 1016 - Disclosure - Cash and Cash Equivalents Network

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172 Implied Table Table

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173 Text block [abstract] Abstract dbvt:TextBlockAbstract
174 Cash and Cash Equivalents Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCashAndCashEquivalentsExplanatory
175 1017 - Disclosure - Capital Network

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176 Implied Table Table

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177 Text block [abstract] Abstract dbvt:TextBlockAbstract
178 Capital Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory
179 1018 - Disclosure - Financial and Other Non-Current Liabilities Network

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180 Implied Table Table

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181 Text block [abstract] Abstract dbvt:TextBlockAbstract
182 Financial and Other Non-Current Liabilities Concept (Text Block (HTML)) For Period dbvt:DisclosureOfFinancialAndOtherNonCurrentLiabilitiesExplanatory
183 1019 - Disclosure - Non-Current Provisions Network

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184 Implied Table Table

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185 Text block [abstract] Abstract dbvt:TextBlockAbstract
186 Non-Current Provisions Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfProvisionsExplanatory
187 1020 - Disclosure - Supplier Accounts Receivable and Other Current Liabilities Network

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188 Implied Table Table

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189 Text block [abstract] Abstract dbvt:TextBlockAbstract
190 Supplier Accounts Receivable and Other Current Liabilities Concept (Text Block (HTML)) For Period dbvt:DisclosureOfSupplierAccountReceivableAndOtherCurrentLiabilitiesExplanatory
191 1021 - Disclosure - Financial Instruments Recognized in the Consolidated Statements of Financial Position and Related Effect on the Consolidated Statements of (Loss) Network

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192 Implied Table Table

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193 Text block [abstract] Abstract dbvt:TextBlockAbstract
194 Financial Instruments Recognized in the Consolidated Statements of Financial Position and Related Effect on the Consolidated Statements of (Loss) Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinancialInstrumentsExplanatory
195 1022 - Disclosure - Operating Income Network

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196 Implied Table Table

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197 Text block [abstract] Abstract dbvt:TextBlockAbstract
198 Operating Income Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherOperatingIncomeExplanatory
199 1023 - Disclosure - Operating Expenses Network

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200 Implied Table Table

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201 Text block [abstract] Abstract dbvt:TextBlockAbstract
202 Operating Expenses Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherOperatingExpenseExplanatory
203 1024 - Disclosure - Share-Based Payments Network

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204 Implied Table Table

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205 Text block [abstract] Abstract dbvt:TextBlockAbstract
206 Share-Based Payments Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSharebasedPaymentArrangementsExplanatory
207 1025 - Disclosure - Financial Revenue and Expenses Network

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208 Implied Table Table

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209 Text block [abstract] Abstract dbvt:TextBlockAbstract
210 Financial Revenue and Expenses Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinanceIncomeExpenseExplanatory
211 1026 - Disclosure - Income Tax Expense Network

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212 Implied Table Table

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213 Text block [abstract] Abstract dbvt:TextBlockAbstract
214 Income Tax Expense Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfIncomeTaxExplanatory
215 1027 - Disclosure - Commitments Network

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216 Implied Table Table

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217 Text block [abstract] Abstract dbvt:TextBlockAbstract
218 Commitments Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCommitmentsExplanatory
219 1028 - Disclosure - Relationships with Related Parties Network

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220 Implied Table Table

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221 Text block [abstract] Abstract dbvt:TextBlockAbstract
222 Relationships with Related Parties Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfRelatedPartyExplanatory
223 1029 - Disclosure - Earnings Per Share Network

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224 Implied Table Table

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225 Text block [abstract] Abstract dbvt:TextBlockAbstract
226 Earnings Per Share Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEarningsPerShareExplanatory
227 1030 - Disclosure - Management of Financial Risks Network

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228 Implied Table Table

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229 Text block [abstract] Abstract dbvt:TextBlockAbstract
230 Management of Financial Risks Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinancialRiskManagementExplanatory
231 1031 - Disclosure - Events After the Close of the Fiscal Year Network

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232 Implied Table Table

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233 Text block [abstract] Abstract dbvt:TextBlockAbstract
234 Events After the Close of the Fiscal Year Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNonadjustingEventsAfterReportingPeriodExplanatory
235 1032 - Disclosure - Accounting Principles (Policies) Network

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236 Implied Table Table

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237 Text block [abstract] Abstract dbvt:TextBlockAbstract
238 Going concern Concept (Text Block (HTML)) For Period dbvt:DescriptionOfAccountingPolicyForGoingConcernExplanatory
239 Intangible Assets Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForIntangibleAssetsOtherThanGoodwillExplanatory
240 Property, Plant, and Equipment Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory
241 Financial Assets Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForFinancialAssetsExplanatory
242 Recoverable Amount of the Intangible Assets and Property, Plant, and Equipment Concept (Text Block (HTML)) For Period dbvt:DescriptionOfAccountingPolicyForRecoverableAmountOfIntangibleAssetsAndPropertyPlantAndEquipmentExplanatory
243 Inventories and Work in Progress Concept (Text Block (HTML)) For Period dbvt:DescriptionOfAccountingPolicyForInventoriesAndWorkInProgressExplanatory
244 Share Capital Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForIssuedCapitalExplanatory
245 Payments in Shares Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForSharebasedPaymentTransactionsExplanatory
246 Recognition and measurement of Financial Liabilities Concept (Text Block (HTML)) For Period dbvt:DescriptionOfAccountingPolicyForRecognitionAndMeasurementOfFinancialLiabilitiesExplanatory
247 Subsidies and Conditional Advances Concept (Text Block (HTML)) For Period dbvt:DescriptionOfAccountingPolicyForSubsidiesAndConditionalAdvancesExplanatory
248 Provisions Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForProvisionsExplanatory
249 Revenue Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForRecognitionOfRevenue
250 Other Income Concept (Text Block (HTML)) For Period dbvt:DescriptionOfAccountingPolicyForOtherIncomeExplanatory
251 Rental Agreements Concept (Text Block (HTML)) For Period dbvt:DescriptionOfAccountingPolicyForRentalAgreementExplanatory
252 Taxes Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForIncomeTaxExplanatory
253 Segment Information Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForSegmentReportingExplanatory
254 Other Items in the Comprehensive (or Loss) Concept (Text Block (HTML)) For Period dbvt:DescriptionOfAccountingPolicyForOtherItemInTheComprehensiveExplanatory
255 Use of Estimates Concept (Text Block (HTML)) For Period dbvt:DescriptionOfAccountingPolicyForUseOfEstimatesExplanatory
256 Presentation of Financial Assets and Financial Liabilities Measured at Fair Value Concept (Text Block (HTML)) For Period dbvt:DescriptionOfAccountingPolicyForPresentationOfFinancialAssetsAndFinancialLiabilitiesMeasuredAtFairValueExplanatory
257 Subsequent events Concept (Text Block (HTML)) For Period dbvt:DescriptionOfAccountingPolicyForSubsequentEventsExplanatory
258 1033 - Disclosure - Accounting Principles (Tables) Network

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259 Implied Table Table

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260 Text block [abstract] Abstract dbvt:TextBlockAbstract
261 Summary of Depreciation Periods Concept (Text Block (HTML)) For Period dbvt:DisclosureOfPropertyPlantAndEquipmentEstimatedUsefulLifeExplanatory
262 1034 - Disclosure - Intangible Assets (Tables) Network

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263 Implied Table Table

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264 Text block [abstract] Abstract dbvt:TextBlockAbstract
265 Summary of Intangible Assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutIntangibleAssetsExplanatory
266 1035 - Disclosure - Property, Plant, and Equipment (Tables) Network

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267 Implied Table Table

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268 Text block [abstract] Abstract dbvt:TextBlockAbstract
269 Summary of Property, Plant, and Equipment Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory
270 1036 - Disclosure - Non-Current Financial Assets (Tables) Network

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271 Implied Table Table

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272 Text block [abstract] Abstract dbvt:TextBlockAbstract
273 Summary of Non-Current Financial Assets Concept (Text Block (HTML)) For Period dbvt:DisclosureOfDetailedInformationOfNonCurrentFinancialAssetsExplanatory
274 1037 - Disclosure - Inventories and Work in Progress (Tables) Network

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275 Implied Table Table

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276 Text block [abstract] Abstract dbvt:TextBlockAbstract
277 Summary of Inventories Concept (Text Block (HTML)) For Period dbvt:DisclosureOfInventoriesDetailedExplanatory
278 1038 - Disclosure - Customer Accounts Receivable and Other Current Assets (Tables) Network

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279 Implied Table Table

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280 Text block [abstract] Abstract dbvt:TextBlockAbstract
281 Summary of Customer Accounts Receivable and Related Receivables Concept (Text Block (HTML)) For Period dbvt:DisclosureOfTradeReceivablesExplanatory
282 Summary of Other Current Assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherCurrentAssetsExplanatory
283 Reconcilliation of Research Tax Credit Concept (Text Block (HTML)) For Period dbvt:DisclosureOfTaxCreditCarryforwardsExplanatory
284 1039 - Disclosure - Cash and Cash Equivalents (Tables) Network

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285 Implied Table Table

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286 Text block [abstract] Abstract dbvt:TextBlockAbstract
287 Summary of Cash and Cash Equivalents Concept (Text Block (HTML)) For Period dbvt:DisclosureOfDetailedInformationOfCashAndCashEquivalentsExplanatory
288 1040 - Disclosure - Capital (Tables) Network

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289 Implied Table Table

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290 Text block [abstract] Abstract dbvt:TextBlockAbstract
291 Summary of Historical Changes in the Share Capital of the Company Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfClassesOfShareCapitalExplanatory
292 Summary of Share Warrants and Employee Warrants Concept (Text Block (HTML)) For Period dbvt:DisclosureOfWarrantActivityExplanatory
293 1041 - Disclosure - Financial and Other Non-Current Liabilities (Tables) Network

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294 Implied Table Table

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295 Text block [abstract] Abstract dbvt:TextBlockAbstract
296 Summary of Debt Recorded on Statement of Financial Position Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsExplanatory
297 Summary of Due Dates of the Financial Liabilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinancialLiabilitiesExplanatory
298 1042 - Disclosure - Non-Current Provisions (Tables) Network

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299 Implied Table Table

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300 Text block [abstract] Abstract dbvt:TextBlockAbstract
301 Schedule of Non-Current Provisions Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEmployeeBenefitsExplanatory
302 Schedule of Commitments for Compensation Payable to Employees Upon Their Retirement Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetExplanatory
303 Schedule of Retirement Commitments Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsExplanatory
304 1043 - Disclosure - Supplier Accounts Receivable and Other Current Liabilities (Tables) Network

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305 Implied Table Table

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306 Text block [abstract] Abstract dbvt:TextBlockAbstract
307 Schedule of Other Current Liabilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherCurrentLiabilitiesExplanatory
308 1044 - Disclosure - Financial Instruments Recognized in the Consolidated Statements of Financial Position and Related Effect on the Consolidated Statements of (Loss) (Tables) Network

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309 Implied Table Table

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310 Text block [abstract] Abstract dbvt:TextBlockAbstract
311 Schedule of Financial Instruments Recognized in the Consolidated Statements of Financial Position and Related Effect on the Consolidated Statements of (Loss) Concept (Text Block (HTML)) For Period dbvt:DisclosureOfFinancialAssetsAndLiabilitiesExplanatory
312 1045 - Disclosure - Operating Income (Tables) Network

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313 Implied Table Table

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314 Text block [abstract] Abstract dbvt:TextBlockAbstract
315 Summary of Operating Income Concept (Text Block (HTML)) For Period dbvt:DisclosureOfOtherOperatingIncomeComponentsExplanatory
316 1046 - Disclosure - Operating Expenses (Tables) Network

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317 Implied Table Table

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318 Text block [abstract] Abstract dbvt:TextBlockAbstract
319 Summary of Research and Development Expense Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfResearchAndDevelopmentExpenseExplanatory
320 Summary of Sales And Marketing Expense Concept (Text Block (HTML)) For Period dbvt:DisclosureOfSalesAndMarketingExpenseExplanatory
321 Summary of General and Administrative Expense Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfGeneralAndAdministrativeExpenseExplanatory
322 Summary of Personnel Expense Concept (Text Block (HTML)) For Period dbvt:DisclosureOfPersonnelExpenseExplanatory
323 1047 - Disclosure - Share-Based Payments (Tables) Network

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324 Statement [table] Table

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325 Entity Listings, Exchange [Axis] Axis dei:EntityListingsExchangeAxis
326 Exchange [Domain] Member dei:ExchangeDomain
327 BSAX [member] Member dbvt:BSAXMember
328 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
329 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
330 BCE 4 [member] Member dbvt:BCEFourMember
331 BCE2010 [member] Member dbvt:BceTwoThousandTenMember
332 BSA [member] Member dbvt:BonsDeSouscriptiondActionsMember
333 Share Option [member] Member dbvt:ShareOptionMember
334 SO [Member] Member dbvt:StockOption1Member
335 Free Share [member] Member dbvt:FreeShareMember
336 BSA2010 [member] Member dbvt:BSATwoThousandTenMember
337 Statement [LineItems] LineItems dbvt:StatementLineItems
338 Summary Details of Share Based Payments Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementExplanatory
339 Summary Of Change in Number of Outstanding shares Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNumberAndWeightedAverageExercisePricesOfOtherEquityInstrumentsExplanatory
340 Summary Breakdown of the Closing Balance Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsExplanatory
341 Summary Of Change in Number of BCE4 Outstanding Concept (Text Block (HTML)) For Period dbvt:DisclosureOfChangesInNumberOfSharesOutstandingExplanatory
342 Summary of Number of Share Options Oustanding and Exercisable Concept (Text Block (HTML)) For Period dbvt:DisclosureOfReconciliationOfNumberOfSharesOutstandingExplanatory
343 Summary Of Breakdown of the Closing Balance Concept (Text Block (HTML)) For Period dbvt:DisclosureOfBreakdownClosingBalanceOfShareBasedPaymentArrangementExplanatory
344 Summary of Change in Number of Outstanding shares Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNumberAndWeightedAverageExercisePricesOfShareOptionsExplanatory
345 Summary Of Breakdown of the Closing Balance Concept (Text Block (HTML)) For Period dbvt:DisclosureOfBreakdownOfClosingBalanceInShareOptionsExplanatory
346 Disclosure of Change in Number of Share Options Outstanding Concept (Text Block (HTML)) For Period dbvt:DisclosureOfDetailInformationAboutChangesInNumberOfShareOptionsOutstandingExplanatory
347 1048 - Disclosure - Financial Revenue and Expenses (Tables) Network

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348 Implied Table Table

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349 Text block [abstract] Abstract dbvt:TextBlockAbstract
350 Summary of Financial Income and Expenses Concept (Text Block (HTML)) For Period dbvt:DisclosureOfDetailInformationAboutFinancialIncomeAndExpensesExplanatory
351 1049 - Disclosure - Income Tax Expense (Tables) Network

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352 Implied Table Table

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353 Text block [abstract] Abstract dbvt:TextBlockAbstract
354 Summary of Reconciliation of Effective and Nominal Tax Expense Concept (Text Block (HTML)) For Period dbvt:DisclosureOfReconciliationOfEffectiveAndApplicableIncomeTaxExpensesExplanatory
355 1050 - Disclosure - Commitments (Tables) Network

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356 Implied Table Table

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357 Text block [abstract] Abstract dbvt:TextBlockAbstract
358 Schedule of Future Rents and Charges Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfMaturityAnalysisOfOperatingLeasePaymentsExplanatory
359 1051 - Disclosure - Relationships with Related Parties (Tables) Network

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360 Implied Table Table

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361 Text block [abstract] Abstract dbvt:TextBlockAbstract
362 Summary of Relationships with Related Parties Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesExplanatory
363 Schedule of Amounts Payable to Related Parties Concept (Text Block (HTML)) For Period dbvt:DisclosureOfAmountPayablesToRelatedPartiesExplanatory
364 1052 - Disclosure - Earnings Per Share (Tables) Network

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365 Implied Table Table

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366 Text block [abstract] Abstract dbvt:TextBlockAbstract
367 Earnings Per Share Concept (Text Block (HTML)) For Period ifrs-full:EarningsPerShareExplanatory
368 1053 - Disclosure - The Company - Additional Information (Detail) Network

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369 Disclosure Of Company [table] Table

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370 Products and services [axis] Axis ifrs-full:ProductsAndServicesAxis
371 Products and services [member] Member ifrs-full:ProductsAndServicesMember
372 Viaskin Peanut [member] Member dbvt:ViaskinPeanutMember
373 Viaskin Milk [member] Member dbvt:ViaskinMilkMember
374 Range [axis] Axis ifrs-full:RangeAxis
375 Ranges [member] Member ifrs-full:RangesMember
376 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
377 Top of range [member] Member ifrs-full:TopOfRangeMember
378 Sale of stock [axis] Axis dbvt:SaleOfStockAxis
379 Sale of stock [domain] Member dbvt:SaleOfStockDomain
380 Public offering [member] Member dbvt:PublicOfferingMember
381 Concurrent private placement [member] Member dbvt:ConcurrentPrivatePlacementMember
382 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
383 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
384 American depositary receipts [member] Member dbvt:AmericanDepositaryReceiptsMember
385 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
386 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
387 Common Shares [member] Member ifrs-full:OrdinarySharesMember
388 Disclosure Of Company [Line items] LineItems dbvt:DisclosureOfCompanyLineItems
389 Age of patients evaluated Concept (xbrli:durationItemType) For Period dbvt:AgeOfPatientsEvaluated
390 Number of patients evaluated Concept (Integer) For Period dbvt:NumberOfPatientsEvaluated
391 Underwritten ordinary shares Concept (Shares) For Period dbvt:NumberOfSharesAvailableToUnderwriters
392 Shares issued Concept (Shares) As Of ifrs-full:NumberOfSharesIssued
393 Share offering price Concept (Share) For Period dbvt:ShareIssuePrice
394 Exchange rate Concept (Pure) As Of dbvt:ForeignExchangeRate
395 Number of additional shares issued Concept (Shares) As Of dbvt:AdditionalNumberOfSharesIssued
396 Proceeds from offering of shares Concept (Monetary) For Period Debit ifrs-full:ProceedsFromIssueOfOrdinaryShares
397 Number of directors after additions Concept (Integer) For Period dbvt:NumberOfDirectors
398 1054 - Disclosure - General Information and Statement of Compliance - Additional Information (Detail) Network

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399 Disclosure of subsidiaries [table] Table

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 ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesTable
400 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
401 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
402 US subsidiary [member] Member ifrs-full:SubsidiariesMember
403 Australian subsidiary [member] Member dbvt:AustralianSubsidiaryMember
404 Canadian subsidiary [member] Member dbvt:CanadianSubsidiaryMember
405 French subsidiary [member] Member dbvt:FrenchSubsidiaryMember
406 Range [axis] Axis ifrs-full:RangeAxis
407 Ranges [member] Member ifrs-full:RangesMember
408 Top of range [member] Member ifrs-full:TopOfRangeMember
409 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
410 Disclosure of subsidiaries [line items] LineItems ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
411 Proportion of ownership interest in subsidiary Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInSubsidiary
412 Increasing amount of financial liabilities Concept (Monetary) For Period Credit dbvt:FinancialLiabilitiesToAmortisedCost
413 1055 - Disclosure - Accounting Principles - Additional Information (Detail) Network

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414 Summary Of Significant Accounting Policies [table] Table

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415 Range [axis] Axis ifrs-full:RangeAxis
416 Ranges [member] Member ifrs-full:RangesMember
417 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
418 Top of range [member] Member ifrs-full:TopOfRangeMember
419 Classes of intangible assets other than goodwill [axis] Axis ifrs-full:ClassesOfIntangibleAssetsOtherThanGoodwillAxis
420 Intangible assets other than goodwill [member] Member ifrs-full:IntangibleAssetsOtherThanGoodwillMember
421 Software [member] Member ifrs-full:ComputerSoftwareMember
422 Disclosure of summary of significant accounting policies [line Items] LineItems dbvt:DisclosureOfSummaryOfSignificantAccountingPoliciesLineItems
423 Depreciation periods Concept (xbrli:durationItemType) For Period dbvt:IntangibleAssetsEstimatedUsefulLife
424 Number of hedging instruments held Concept (Decimal) For Period dbvt:NumberOfHedgingInstrumentsHeld
425 Research tax credit reimbursement Concept (Monetary) For Period Credit dbvt:ResearchTaxCreditAmount
426 Tax credit reimbursement to be requested Concept (Monetary) As Of Debit dbvt:ResearchTaxCreditReceivable
427 Potential development, clinical, commercial milestones payment receivable Concept (Monetary) As Of Debit dbvt:PotentialMilestoneReceivable
428 Non-refundable upfront payment Concept (Monetary) For Period Credit dbvt:UpfrontPayment
429 1056 - Disclosure - Accounting Principles - Summary of Depreciation Periods (Detail) Network

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

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431 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
432 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
433 Fixtures and improvements in structures [member] Member ifrs-full:FixturesAndFittingsMember
434 Research and development / production tools [member] Member dbvt:ResearchAndDevelopmentMember
435 Research equipment and technical facilities [member] Member dbvt:ResearchEquipmentAndTechnicalFacilitiesMember
436 Computer equipment [member] Member ifrs-full:ComputerEquipmentMember
437 Office equipment and furniture [member] Member dbvt:OfficeEquipmentAndFurnitureMember
438 Disclosure of detailed information about property, plant and equipment [line items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
439 Depreciation periods Concept (Text/String) For Period ifrs-full:UsefulLivesOrDepreciationRatesPropertyPlantAndEquipment
440 1057 - Disclosure - Intangible Assets - Summary of Intangible Assets (Detail) Network

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441 Disclosure of detailed information about intangible assets [table] Table

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442 Classes of intangible assets other than goodwill [axis] Axis ifrs-full:ClassesOfIntangibleAssetsOtherThanGoodwillAxis
443 Intangible assets other than goodwill [member] Member ifrs-full:IntangibleAssetsOtherThanGoodwillMember
444 Patents, licenses, trademarks [member] Member dbvt:PatentsLicensesAndTrademarksMember
445 Software [member] Member ifrs-full:ComputerSoftwareMember
446 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
447 Carrying amount [member] Member ifrs-full:CarryingAmountMember
448 Total, gross [member] Member ifrs-full:GrossCarryingAmountMember
449 Total accumulated amortization and depreciation [member] Member ifrs-full:AccumulatedDepreciationAndAmortisationMember
450 Disclosure of detailed information about intangible assets [line items] LineItems ifrs-full:DisclosureOfIntangibleAssetsLineItems
451 Intangible assets other than goodwill Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsOtherThanGoodwill
452 1058 - Disclosure - Intangible Assets - Additional Information (Detail) Network

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453 Implied Table Table

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454 Disclosure of detailed information about intangible assets [abstract] Abstract ifrs-full:DisclosureOfIntangibleAssetsAbstract
455 Impairment of assets Concept (Monetary) For Period Debit ifrs-full:ImpairmentLoss
456 1059 - Disclosure - Property, Plant, and Equipment - Summary of Property, Plant, and Equipment (Detail) Network

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

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 ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
458 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
459 Carrying amount [member] Member ifrs-full:CarryingAmountMember
460 Total, gross [member] Member ifrs-full:GrossCarryingAmountMember
461 Total accumulated amortization and depreciation [member] Member ifrs-full:AccumulatedDepreciationAndAmortisationMember
462 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
463 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
464 Laboratory equipment [member] Member dbvt:LaboratoryEquipmentMember
465 Building fixtures [member] Member dbvt:BuildingFixturesMember
466 Office equipment [member] Member ifrs-full:OfficeEquipmentMember
467 Computer equipment [member] Member ifrs-full:ComputerEquipmentMember
468 Property, plant, and equipment in progress [member] Member ifrs-full:ConstructionInProgressMember
469 Statement scenario [axis] Axis dbvt:StatementScenarioAxis
470 Statement scenario [member] Member dbvt:StatementScenarioMember
471 Scenario, Previously Reported [member] Member srt:ScenarioPreviouslyReportedMember
472 Disclosure of detailed information about property, plant and equipment [line items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
473 Property, plant, and equipment beginning balance Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
474 Increase in property, plant, and equipment Concept (Monetary) For Period Debit dbvt:IncreaseInPropertyPlantAndEquipment
475 Decrease in property, plant, and equipment Concept (Monetary) For Period Credit dbvt:DecreaseInPropertyPlantAndEquipment
476 Property, plant, and equipment ending balance Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
477 1060 - Disclosure - Non-Current Financial Assets - Summary of Non-Current Financial Assets (Detail) Network

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478 Disclosure of Non Financial Assets [table] Table

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479 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
480 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
481 Deposits [member] Member dbvt:Deposits1Member
482 Pledged securities [member] Member dbvt:PledgedSecuritiesMember
483 Liquidity contract [member] Member dbvt:LiquidityConctractMember
484 Disclosure of non financial assets. LineItems dbvt:DisclosureOfNonFinancialAssetsLineItems
485 Non-current financial assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentFinancialAssets
486 1061 - Disclosure - Non-Current Financial Assets - Additional Information (Detail) Network

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487 Disclosure of Non Financial Assets [table] Table

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488 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
489 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
490 Liquidity contract [member] Member dbvt:LiquidityConctractMember
491 Disclosure of non financial assets. LineItems dbvt:DisclosureOfNonFinancialAssetsLineItems
492 Number of treasury shares Concept (Shares) As Of dbvt:NumberOfTreasuryShares
493 1062 - Disclosure - Inventories and Work in Progress - Summary of Inventories (Detail) Network

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494 Implied Table Table

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495 Disclosure of inventories [abstract] Abstract dbvt:DisclosureOfInventoriesAbstract
496 Inventories of raw materials Concept (Monetary) As Of Debit ifrs-full:RawMaterials
497 Work in progress Concept (Monetary) As Of Debit dbvt:InventoriesOfWorkInProgress
498 Allowance for inventory write-down (charged to income statement) Concept (Monetary) As Of Debit dbvt:AllowanceForInventoryWritedown
499 Total net value of the inventories Concept (Monetary) As Of Debit ifrs-full:Inventories
500 1063 - Disclosure - Inventories and Work in Progress - Additional Information (Detail) Network

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501 Implied Table Table

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502 Disclosure of inventories [abstract] Abstract dbvt:DisclosureOfInventoriesAbstract
503 Inventories of work in progress Concept (Monetary) As Of Debit ifrs-full:WorkInProgress
504 1064 - Disclosure - Customer Accounts Receivable and Other Current Assets - Summary of Customer Accounts Receivable and Related Receivables (Detail) Network

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505 Implied Table Table

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506 Trade and other receivables [abstract] Abstract ifrs-full:TradeAndOtherReceivablesAbstract
507 Accounts receivable Concept (Monetary) As Of Debit ifrs-full:CurrentTradeReceivables
508 Valuation allowance (charged to income statement) Concept (Monetary) As Of Credit dbvt:ValuationAllowanceCustomerAccountReceivable
509 Total net value of accounts receivable Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherCurrentReceivables
510 1065 - Disclosure - Customer Accounts Receivable and Other Current Assets - Additional Information (Detail) Network

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511 Implied Table Table

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512 Trade and other receivables [abstract] Abstract ifrs-full:TradeAndOtherReceivablesAbstract
513 Trade receivables payment terms Concept (Text/String) For Period ifrs-full:DescriptionOfSignificantPaymentTermsInContractsWithCustomers
514 Research tax credit current adjustment Concept (Monetary) For Period Debit dbvt:ResearchTaxCreditCurrentAdjustment
515 Research tax credit final reassessment received Concept (Monetary) For Period Credit dbvt:ResearchTaxCreditFinalReassessmentReceived
516 Research tax credit current adjustment reversed Concept (Monetary) For Period Credit dbvt:ResearchTaxCreditCurrentAdjustmentReversed
517 1066 - Disclosure - Customer Accounts Receivable and Other Current Assets - Summary of Other Current Assets (Detail) Network

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518 Implied Table Table

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519 Disclosure of accounts receivables [abstract] Abstract dbvt:DisclosureOfAccountsReceivablesAbstract
520 Research tax credit Concept (Monetary) As Of Debit dbvt:ResearchTaxCreditCurrent
521 Other tax claims Concept (Monetary) As Of Debit ifrs-full:CurrentReceivablesFromTaxesOtherThanIncomeTax
522 Other receivables Concept (Monetary) As Of Debit ifrs-full:OtherReceivables
523 Prepaid expenses Concept (Monetary) As Of Debit ifrs-full:CurrentPrepaidExpenses
524 Total Concept (Monetary) As Of Debit ifrs-full:OtherCurrentAssets
525 1067 - Disclosure - Customer Accounts Receivable and Other Current Assets - Reconciliation of Research Tax Credit (Detail) Network

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526 Implied Table Table

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527 Trade and other receivables [abstract] Abstract ifrs-full:TradeAndOtherReceivablesAbstract
528 Opening balance sheet receivable Concept (Monetary) As Of Debit dbvt:ResearchTaxCreditCurrent
529 + Operating revenue Concept (Monetary) For Period Debit dbvt:ResearchTaxCreditCurrentOperatingRevenue
530 + Other income Concept (Monetary) For Period Debit dbvt:ResearchTaxCreditCurrentOtherIncome
531 - Payment received Concept (Monetary) For Period Credit dbvt:ResearchTaxCreditCurrentPaymentReceived
532 - Adjustment Concept (Monetary) For Period Debit dbvt:ResearchTaxCreditCurrentAdjustment
533 Closing balance sheet receivable Concept (Monetary) As Of Debit dbvt:ResearchTaxCreditCurrent
534 1068 - Disclosure - Cash and Cash Equivalents - Summary of Cash and Cash Equivalents (Detail) Network

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535 Implied Table Table

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536 Cash and cash equivalents [abstract] Abstract ifrs-full:CashAndCashEquivalentsAbstract
537 Cash Concept (Monetary) As Of Debit ifrs-full:Cash
538 Cash equivalent term deposits Concept (Monetary) As Of Debit ifrs-full:ShorttermDepositsClassifiedAsCashEquivalents
539 Total cash and cash equivalent as reported in statement of financial position Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
540 Bank overdrafts Concept (Monetary) As Of Credit ifrs-full:BankOverdraftsClassifiedAsCashEquivalents
541 Total net cash and cash equivalents as reported in the statement of cash flow Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
542 1069 - Disclosure - Capital - Additional Information (Detail) Network

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 http://www.dbv-technologies.com/taxonomy/role/DisclosureCapitalAdditionalInformation
543 Disclosure of classes of share capital [table] Table

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 ifrs-full:DisclosureOfClassesOfShareCapitalTable
544 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
545 Assets [member] Member ifrs-full:ClassesOfAssetsMember
546 Public offering [member] Member dbvt:PublicOfferingMember
547 Concurrent private placement [member] Member dbvt:ConcurrentPrivatePlacementMember
548 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
549 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
550 Common Shares [member] Member ifrs-full:OrdinarySharesMember
551 American depositary receipts [member] Member dbvt:AmericanDepositaryReceiptsMember
552 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
553 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
554 Common Shares [member] Member ifrs-full:OrdinarySharesMember
555 American Depositary Shares [Member] Member dbvt:AmericanDepositarySharesMember
556 Sale of stock [axis] Axis dbvt:SaleOfStockAxis
557 Sale of stock [domain] Member dbvt:SaleOfStockDomain
558 Public offering [member] Member dbvt:PublicOfferingMember
559 Concurrent private placement [member] Member dbvt:ConcurrentPrivatePlacementMember
560 Disclosure of classes of share capital [line items] LineItems ifrs-full:DisclosureOfClassesOfShareCapitalLineItems
561 Share Capital Concept (Monetary) As Of Credit ifrs-full:IssuedCapital
562 Number of share authorised Concept (Shares) As Of ifrs-full:NumberOfSharesAuthorised
563 Number of share issued Concept (Shares) As Of ifrs-full:NumberOfSharesOutstanding
564 Par value per share Concept (Share) As Of ifrs-full:ParValuePerShare
565 Number of shares issued during period shares Concept (Shares) As Of ifrs-full:NumberOfSharesIssued
566 Number of ordinary shares per american depository shares Concept (Share) For Period dbvt:NumberOfEquitySharesPerAmericanDepositoryShares
567 Issuances relating to underwritten global offering Concept (Shares) For Period dbvt:NumberOfSharesAvailableToUnderwriters
568 Shares issued Concept (Shares) As Of dbvt:AdditionalNumberOfSharesIssued
569 Share offering price Concept (Share) For Period dbvt:ShareIssuePrice
570 Exchange rate Concept (Pure) As Of dbvt:ForeignExchangeRate
571 Offering expense discount Concept (Monetary) For Period Debit dbvt:OfferingExpenseDiscount
572 Fees and commission expense related to share capital Concept (Monetary) For Period Debit ifrs-full:FeeAndCommissionExpense
573 Share split ratio Concept (Pure) For Period dbvt:ReverseStockSplitConversionRatio
574 1070 - Disclosure - Capital - Summary of Historical Changes in the Share Capital of the Company (Detail) Network

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 http://www.dbv-technologies.com/taxonomy/role/DisclosureCapitalSummaryOfHistoricalChangesInTheShareCapitalOfTheCompany
575 Disclosure of classes of share capital [table] Table

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 ifrs-full:DisclosureOfClassesOfShareCapitalTable
576 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
577 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
578 Common Shares [member] Member ifrs-full:OrdinarySharesMember
579 Creation date [axis] Axis ifrs-full:CreationDateAxis
580 Default financial statements date [member] Member ifrs-full:DefaultFinancialStatementsDateMember
581 2/16/2016 [Member] Member dbvt:ShareCapitalIssuedOnFebruarySixteenTwoThousandAndSixteenMember
582 4/6/2016 [Member] Member dbvt:ShareCapitalIssuedOnAprilSixTwoThousandAndSixteenMember
583 5/27/2016 [Member] Member dbvt:ShareCapitalIssuedOnMayTwentySevenTwoThousandAndSixteenMember
584 6/3/2016 [Member] Member dbvt:ShareCapitalIssuedOnJuneThreeTwoThousandAndSixteenMember
585 6/6/2016 [Member] Member dbvt:ShareCapitalIssuedOnJuneSixTwoThousandAndSixteenMember
586 6/10/2016 [Member] Member dbvt:ShareCapitalIssuedOnJuneTenTwoThousandAndSixteenMember
587 7/18/2016 [Member] Member dbvt:ShareCapitalIssuedOnJulyEighteenTwoThousandAndSixteenMember
588 8/4/2016 [Member] Member dbvt:ShareCapitalIssuedOnAugustFourTwoThousandAndSixteenMember
589 8/24/2016 [Member] Member dbvt:ShareCapitalIssuedOnAugustTwentyFourTwoThousandAndSixteenMember
590 8/30/2016 [Member] Member dbvt:ShareCapitalIssuedOnAugustThirtyTwoThousandAndSixteenMember
591 8/31/2016 [Member] Member dbvt:ShareCapitalIssuedOnAugustThirtyOneTwoThousandAndSixteenMember
592 9/1/2016 [Member] Member dbvt:ShareCapitalIssuedOnSeptemberOneTwoThousandAndSixteenMember
593 9/2/2016 [Member] Member dbvt:ShareCapitalIssuedOnSeptemberTwoTwoThousandAndSixteenMember
594 9/5/2016 [Member] Member dbvt:ShareCapitalIssuedOnSeptemberFiveTwoThousandAndSixteenMember
595 9/6/2016 [Member] Member dbvt:ShareCapitalIssuedOnSeptemberSixTwoThousandAndSixteenMember
596 9/6/2016 [Member] Member dbvt:ShareCapitalIssuedOnSeptemberSixTwoThousandAndSixteenOneMember
597 9/8/2016 [Member] Member dbvt:ShareCapitalIssuedOnSeptemberEightTwoThousandAndSixteenMember
598 9/9/2016 [Member] Member dbvt:ShareCapitalIssuedOnSeptemberNineTwoThousandAndSixteenMember
599 9/12/2016 [Member] Member dbvt:ShareCapitalIssuedOnSeptemberTwelveTwoThousandAndSixteenMember
600 9/12/2016 [Member] Member dbvt:ShareCapitalIssuedOnSeptemberTwelveTwoThousandAndSixteenOneMember
601 11/25/2016 [Member] Member dbvt:ShareCapitalIssuedOnNovemberTwentyFiveTwoThousandAndSixteenMember
602 1/5/2016 [Member] Member dbvt:ShareCapitalIssuedOnJanuaryFiveTwoThousandAndSixteenMember
603 8/21/2016 [Member] Member dbvt:ShareCapitalIssuedOnAugustTwentyOneTwoThousandAndSixteenMember
604 02/03/2017 [member] Member dbvt:ShareCapitalIssuedOnFebruaryThreeTwoThousandAndSeventeenMember
605 05/16/2017 [member] Member dbvt:ShareCapitalIssuedOnMaySixteenTwoThousandAndSeventeenMember
606 07/12/2017 [member] Member dbvt:ShareCapitalIssuedOnJulyTwelveTwoThousandAndSeventeenMember
607 08/04/2017 [member] Member dbvt:ShareCapitalIssuedOnAugustFourTwoThousandAndSeventeenMember
608 09/14/2017 [member] Member dbvt:ShareCapitalIssuedOnSeptemberFourteenTwoThousandAndSeventeenMember
609 09/29/2017 [member] Member dbvt:ShareCapitalIssuedOnSeptemberTwentyNineTwoThousandAndSeventeenMember
610 09/30/2017 [member] Member dbvt:ShareCapitalIssuedOnSeptemberThirtyTwoThousandAndSeventeenMember
611 10/02/2017 [Member] Member dbvt:ShareCapitalIssuedOnOctoberTwoTwoThousandAndSeventeenMember
612 12/15/2017 [member] Member dbvt:ShareCapitalIssuedOnDecemberFifteenTwoThousandAndSeventeenMember
613 02/09/2017 [member] Member dbvt:ShareCapitalIssuedOnFebruaryNineTwoThousandAndSeventeenMember
614 Share Capital Issued On 1/8/2018 [member] Member dbvt:ShareCapitalIssuedOnJanuaryEightTwoThousandAndEighteenMember
615 Share capital issued on 1/9/2018 [member] Member dbvt:ShareCapitalIssuedOnJanuaryNineTwoThousandAndEighteenMember
616 Share capital issued on 1/16/2018 [member] Member dbvt:ShareCapitalIssuedOnJanuarySixteenTwoThousandAndEighteenMember
617 Share capital issued on 1/18/2018 [member] Member dbvt:ShareCapitalIssuedOnJanuaryEighteenTwoThousandAndEighteenMember
618 Share capital issued on 1/30/2018 [member] Member dbvt:ShareCapitalIssuedOnJanuaryThirtyTwoThousandAndEighteenMember
619 Share capital issued on 1/31/2018 [member] Member dbvt:ShareCapitalIssuedOnJanuaryThirtyOneTwoThousandAndEighteenMember
620 Share capital issued on 2/16/2018 [member] Member dbvt:ShareCapitalIssuedOnFebruarySixteenTwoThousandAndEighteenMember
621 Share capital issued on 3/13/2018 [member] Member dbvt:ShareCapitalIssuedOnMarchThirteenTwoThousandAndEighteenMember
622 Share capital issued on 3/23/2018 [member] Member dbvt:ShareCapitalIssuedOnMarchTwentyThreeTwoThousandAndEighteenMember
623 Share capital issued on 3/26/2018 [member] Member dbvt:ShareCapitalIssuedOnMarchTwentySixTwoThousandAndEighteenMember
624 Share capital issued on 4/5/2018 [member] Member dbvt:ShareCapitalIssuedOnAprilFiveTwoThousandAndEighteenMember
625 Share capital issued on 4/6/2018 [member] Member dbvt:ShareCapitalIssuedOnAprilSixTwoThousandAndEighteenMember
626 Share capital issued on April six two thousand and eighteen one [member] Member dbvt:ShareCapitalIssuedOnAprilSixTwoThousandAndEighteenOneMember
627 Share capital issued on 4/9/2018 [member] Member dbvt:ShareCapitalIssuedOnAprilNineTwoThousandAndEighteenMember
628 Share capital issued on 4/16/2018 [member] Member dbvt:ShareCapitalIssuedOnAprilSixteenTwoThousandAndEighteenMember
629 Share capital issued on 7/2/2018 [member] Member dbvt:ShareCapitalIssuedOnJulyTwoTwoThousandAndEighteenMember
630 Share capital issued on 8/21/2018 [member] Member dbvt:ShareCapitalIssuedOnAugustTwentyOneTwoThousandAndEighteenMember
631 Share capital issued on 7/5/2018 [member] Member dbvt:ShareCapitalIssuedOnJulyFiveTwoThousandAndEighteenMember
632 Share capital issued on 7/11/2018 [member] Member dbvt:ShareCapitalIssuedOnJulyElevenTwoThousandAndEighteenMember
633 Share capital issued on 8/16/2018 [member] Member dbvt:ShareCapitalIssuedOnAugustSixteenTwoThousandAndEighteenMember
634 Share capital issued on 9/1/2018 [member] Member dbvt:ShareCapitalIssuedOnSeptemberOneTwoThousandAndEighteenMember
635 Share capital issued on 12/9/2018 [member] Member dbvt:ShareCapitalIssuedOnDecemberNineTwoThousandAndEighteenMember
636 Share capital issued on 9/21/2018 [member] Member dbvt:ShareCapitalIssuedOnSeptemberTwentyOneTwoThousandAndEighteenMember
637 Share capital issued on 12/31/2018 [member] Member dbvt:ShareCapitalIssuedOnDecemberThirtyOneTwoThousandAndEighteenMember
638 Share capital issued on 10/27/2018 [member] Member dbvt:ShareCapitalIssuedOnOctoberTwentySevenTwoThousandAndEighteenMember
639 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
640 Equity [member] Member ifrs-full:EquityMember
641 Share capital [Member] Member ifrs-full:IssuedCapitalMember
642 Share premium [Member] Member ifrs-full:SharePremiumMember
643 Disclosure of classes of share capital [line items] LineItems ifrs-full:DisclosureOfClassesOfShareCapitalLineItems
644 Beginning balance Concept (Monetary) As Of Credit ifrs-full:Equity
645 Capital increase by incorporation of reserve Concept (Shares) For Period dbvt:CapitalIncreaseDecreaseByIncorporationOfReserve
646 Capital increase by incorporation of reserve Concept (Monetary) For Period Credit dbvt:IncreaseDecreaseInShareCapitalThroughIncorporationOfReserveDuringPeriodValue
647 Capital increase by issuance of common shares Concept (Monetary) For Period Credit dbvt:IncreaseDecreaseInShareCapitalThroughIssuanceOfShares
648 Fees charged to share premium Concept (Monetary) For Period Credit dbvt:FeesChargedToSharePremium
649 Issue of share subscription warrants Concept (Monetary) For Period Credit dbvt:IssueOfShareSubscriptionWarrantsForSharePremium
650 Ending balance Concept (Monetary) As Of Credit ifrs-full:Equity
651 Beginning balance Concept (Shares) As Of ifrs-full:NumberOfSharesOutstanding
652 Capital increase by issuance of common shares Concept (Shares) For Period ifrs-full:IncreaseDecreaseInNumberOfOrdinarySharesIssued
653 Capital increase by incorporation of reserve Concept (Shares) For Period dbvt:IncreaseDecreaseInShareCapitalThroughIncorporationOfReserveDuringPeriodShares
654 Issue of share subscription warrants Concept (Shares) For Period dbvt:IssueOfShareSubscriptionWarrantsDuringPeriodShares
655 Ending balance Concept (Shares) As Of ifrs-full:NumberOfSharesOutstanding
656 Capital increase by incorporation of reserve Concept (Share) For Period dbvt:ShareCapitalIncorporationOfReserveOfCommonStockParValue
657 Beginning balance, Nominal value Concept (Share) For Period dbvt:CommonStockParValuePerShareBeginningBalance
658 Issue of share subscription warrants, Nominal value Concept (Share) For Period dbvt:CommonStockParValueOfShareSubscriptionWarrants
659 Ending balance, Nominal value Concept (Share) As Of dbvt:CommonStockParValuePerShareEndingBalance
660 Capital increase by incorporation of reserve, Nominal value Concept (Share) For Period dbvt:ShareCapitalOfCommonStockParValue
661 1071 - Disclosure - Capital - Summary of Share Warrants and Employee Warrants (Detail) Network

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 http://www.dbv-technologies.com/taxonomy/role/DisclosureCapitalSummaryOfShareWarrantsAndEmployeeWarrants
662 Disclosure of classes of share capital [table] Table

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 ifrs-full:DisclosureOfClassesOfShareCapitalTable
663 Creation date [axis] Axis ifrs-full:CreationDateAxis
664 Default financial statements date [member] Member ifrs-full:DefaultFinancialStatementsDateMember
665 12/07/2007 [Member] Member dbvt:DecemberSevenTwoThousandSevenMember
666 1/21/2009 [Member] Member dbvt:JanuaryTwentyOneTwoThousandNineMember
667 6/25/2010 [Member] Member dbvt:JuneTwentyFiveTwoThousandTenMember
668 1/28/2011 [Member] Member dbvt:JanuaryTwentyEightTwoThousandElevenMember
669 6/24/2011 [Member] Member dbvt:JuneTwentyFourTwoThousandElevenMember
670 11/22/2011 [Member] Member dbvt:NovemberTwentyTwoTwoThousandElevenMember
671 1/17/2012 [Member] Member dbvt:JanuarySeventeenTwoThousandTwelveMember
672 4/2/2012 [Member] Member dbvt:AprilTwoTwoThousandTwelveMember
673 7/25/2012 [Member] Member dbvt:JulyTwentyFiveTwoThousandTwelveMember
674 9/25/2012 [Member] Member dbvt:SeptemberTwentyFiveTwoThousandTwelveMember
675 11/28/2012 [Member] Member dbvt:NovemberTwentyEightTwoThousandTwelveMember
676 7/25/2013 [Member] Member dbvt:JulyTwentyFiveTwoThousandThirteenMember
677 9/12/2013 [Member] Member dbvt:SeptemberTwelveTwoThousandThirteenMember
678 9/18/2013 [Member] Member dbvt:SeptemberEighteenTwoThousandThirteenMember
679 6/3/2014 [Member] Member dbvt:JuneThreeTwoThousandFourteenMember
680 3/24/2015 [Member] Member dbvt:MarchTwentyFourTwoThousandFifteenMember
681 6/23/2015 [Member] Member dbvt:JuneTwentyThreeTwoThousandFifteenMember
682 9/30/2015 [Member] Member dbvt:SeptemberThirtyTwoThousandFifteenMember
683 11/19/2015 [Member] Member dbvt:NovemberNinteenTwoThousandFifteenMember
684 12/15/2015 [Member] Member dbvt:DecemberFifteenTwoThousandFifteenMember
685 1/4/2016 [Member] Member dbvt:JanuaryFourTwoThousandSixteenMember
686 4/6/2016 [Member] Member dbvt:AprilSixTwoThousandSixteenMember
687 4/21/2016 [Member] Member dbvt:AprilTwentyOneTwoThousandSixteenMember
688 5/2/2016 [Member] Member dbvt:MayTwoTwoThousandSixteenMember
689 6/21/2016 [Member] Member dbvt:JuneTwentyOneTwoThousandSixteenMember
690 8/1/2016 [Member] Member dbvt:AugustOneTwoThousandSixteenMember
691 9/15/2016 [Member] Member dbvt:SeptemberFifteenTwoThousandSixteenMember
692 10/17/2016 [Member] Member dbvt:OctoberSeventeenTwoThousandSixteenMember
693 10/27/2016 [Member] Member dbvt:OctoberTwentySevenTwoThousandSixteenMember
694 11/15/2016 [Member] Member dbvt:NovemberFifteenTwoThousandSixteenMember
695 12/9/2016 [Member] Member dbvt:DecemberNineTwoThousandSixteenMember
696 9/17/2018 [member] Member dbvt:SeptemberSeventeenTwoThousandEighteenMember
697 10/15/2018 [member] Member dbvt:OctoberFifteenTwoThousandEighteenMember
698 11/1/2018 [member] Member dbvt:NovemberOneTwoThousandEighteenMember
699 11/15/2018 [member] Member dbvt:NovemberFifteenTwoThousandEighteenMember
700 11/29/2018 [member] Member dbvt:NovemberTwentyNineTwoThousandEighteenMember
701 12/12/2018 [member] Member dbvt:DecemberTwelveTwoThousandEighteenMember
702 12/12/2018 one [member] Member dbvt:DecemberTwelveTwoThousandEighteenOneMember
703 12/17/2018 [member] Member dbvt:DecemberSeventeenTwoThousandEighteenMember
704 12/15/2016 [member] Member dbvt:DecemberFifteenTwoThousandAndSixteenMember
705 1/16/2017 [member] Member dbvt:JanuarySixteenTwoThousandAndSeventeenMember
706 3/14/2017 [member] Member dbvt:MarchFourteenTwoThousandSeventeenMember
707 3/17/2017 [member] Member dbvt:MarchSeventeenTwoThousandSeventeenMember
708 4/18/2017 [member] Member dbvt:AprilEighteenTwoThousandSeventeenMember
709 4/22/2017 [member] Member dbvt:AprilTwentyTwoThousandSeventeenMember
710 6/15/2017 [member] Member dbvt:JuneFifteenTwoThousandSeventeenMember
711 7/17/2017 [member] Member dbvt:JulySeventeenTwoThousandSeventeenMember
712 9/15/2017 [member] Member dbvt:SeptemberFifteenTwoThousandSeventeenMember
713 12/5/2017 [member] Member dbvt:DecemberFiveTwoThousandAndSeventeenMember
714 12/15/2017 [member] Member dbvt:DecemberFifteenTwoThousandAndSeventeenMember
715 1/15/2018 [member] Member dbvt:JanuaryFifteenTwoThousandEighteenMember
716 4/16/2018 [member] Member dbvt:AprilSixteenTwoThousandEighteenMember
717 5/16/2018 [member] Member dbvt:MaySixteenTwoThousandEighteenMember
718 6/15/2018 [member] Member dbvt:JuneFifteenTwoThousandEighteenMember
719 6/22/2018 [member] Member dbvt:JuneTwentyTwoTwoThousandEighteenMember
720 6/22/2018 [member] Member dbvt:JuneTwentyTwoTwoThousandEighteenOneMember
721 7/2/2018 [member] Member dbvt:JulyTwoTwoThousandEighteenMember
722 7/16/2018 [member] Member dbvt:JulySixteenTwoThousandEighteenMember
723 8/15/2018 [member] Member dbvt:AugustFifteenTwoThousandEighteenMember
724 9/6/2018 [member] Member dbvt:SeptemberSixTwoThousandEighteenMember
725 6/9/2018 [member] Member dbvt:JuneNineTwoThousandEighteenMember
726 3/15/2017 [member] Member dbvt:MarchFifteenTwoThousandSeventeenMember
727 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
728 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
729 BSA [Member] Member dbvt:ShareWarrantsMember
730 BSA/BSPCE [Member] Member dbvt:ShareAndEmployeeWarrantsMember
731 BSPCE [Member] Member dbvt:EmployeeWarrantsMember
732 AGA [Member] Member dbvt:PerformanceShareMember
733 SO [Member] Member dbvt:StockOption1Member
734 Share Option [member] Member dbvt:ShareOptionMember
735 Disclosure of classes of share capital [line items] LineItems ifrs-full:DisclosureOfClassesOfShareCapitalLineItems
736 Number of warrants issued Concept (Shares) As Of dbvt:NumberOfWarrantsIssued
737 Number of warrants null and void Concept (Shares) For Period dbvt:NumberOfWarrantsForfeited
738 Number of warrants null and outstanding Concept (Shares) As Of dbvt:NumberOfWarrantsOutstanding
739 Maximum number of shares to be issued Concept (Shares) As Of ifrs-full:NumberOfSharesIssued
740 Strike price per share Concept (Share) For Period dbvt:ExercisePricesPerShare
741 1072 - Disclosure - Financial and Other Non-Current Liabilities - Additional Information (Detail) Network

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

*

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 ifrs-full:DisclosureOfFinancialInstrumentsTable
743 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
744 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
745 3rd OSEO contract [member] Member dbvt:ThirdOseoAdvanceMember
746 4th OSEO contract [member] Member dbvt:FourthOseoAdvanceMember
747 BPI advance [member] Member dbvt:BpiAdvanceMember
748 COFACE [member] Member dbvt:CofaceAdvanceMember
749 Range [axis] Axis ifrs-full:RangeAxis
750 Ranges [member] Member ifrs-full:RangesMember
751 Top of range [member] Member ifrs-full:TopOfRangeMember
752 Statement scenario [axis] Axis dbvt:StatementScenarioAxis
753 Statement scenario [member] Member dbvt:StatementScenarioMember
754 Scenario Forecast [member] Member dbvt:ScenarioForecastMember
755 Collaboration arrangements [axis] Axis dbvt:CollaborationArrangementsAxis
756 Collaboration arrangements [domain] Member dbvt:CollaborationArrangementsDomain
757 Collaborative research and clinical development [member] Member dbvt:CollaborativeResearchAndClinicalDevelopmentMember
758 Disclosure of Detailed Information About Financial Instruments [line items] LineItems ifrs-full:DisclosureOfFinancialInstrumentsLineItems
759 Advances repayable at nominal value Concept (Percent) For Period dbvt:PercentageOfBorrowingsRepayableAtNominalValue
760 Number of advance contracts Concept (Integer) For Period dbvt:NumberOfAdvanceContracts
761 Income earned on termination of contract Concept (Monetary) For Period Credit dbvt:IncomeOnTerminationOfAdvanceContracts
762 Cash collected from conditional advance Concept (Monetary) For Period Credit dbvt:DebtSecuritiesAvailableUnderAgreement
763 Cash collected from conditional advance Concept (Monetary) For Period Debit ifrs-full:ProceedsFromBorrowingsClassifiedAsFinancingActivities
764 Repayment of conditional advance Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfBorrowingsClassifiedAsFinancingActivities
765 Borrowings repaid Concept (Monetary) For Period Debit dbvt:BorrowingsFixedRepaymentAmount
766 Number of installment payments Concept (Integer) For Period dbvt:NumberOfQuarterlyInstalments
767 Installment payment start date Concept (Date) For Period dbvt:DateOfFirstInstallmentPayment
768 Borrowings paid in installments Concept (Monetary) As Of Debit dbvt:BorrowingsRepaymentInstallmentAmount
769 Borrowings Concept (Monetary) As Of Credit ifrs-full:Borrowings
770 Annual interest rate on advance Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
771 Conditional advance, including interest to be paid Concept (Monetary) As Of Credit dbvt:LoansAndBorrowingsIncludingInterestPayable
772 Number of quarterly repayments Concept (Integer) For Period dbvt:NumberOfQuarterlyInstallments
773 Proportion of revenue to be paid in advance by the company Concept (Percent) For Period ifrs-full:PercentageOfEntitysRevenue
774 Agreement termination date Concept (Text/String) For Period dbvt:ContractTerminationDate
775 Non-current part of deferred revenue Concept (Monetary) As Of Credit ifrs-full:DeferredIncomeClassifiedAsNoncurrent
776 1073 - Disclosure - Financial and Other Non-Current Liabilities - Summary of Debt Recorded on Statement of Financial Position (Detail) (Detail) Network

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777 Disclosure of detailed information about borrowings [table] Table

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 ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
778 Statement scenario [axis] Axis dbvt:StatementScenarioAxis
779 Statement scenario [member] Member dbvt:StatementScenarioMember
780 Scenario, Previously Reported [member] Member srt:ScenarioPreviouslyReportedMember
781 Range [axis] Axis ifrs-full:RangeAxis
782 Ranges [member] Member ifrs-full:RangesMember
783 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
784 Top of range [member] Member ifrs-full:TopOfRangeMember
785 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
786 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
787 3rd OSEO contract [member] Member dbvt:ThirdOseoAdvanceMember
788 4th OSEO contract [member] Member dbvt:FourthOseoAdvanceMember
789 BPI advance [member] Member dbvt:BpiAdvanceMember
790 COFACE [member] Member dbvt:CofaceAdvanceMember
791 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
792 Beginning balance Concept (Monetary) As Of Credit ifrs-full:Borrowings
793 Receipts Concept (Monetary) For Period Debit ifrs-full:ProceedsFromBorrowingsClassifiedAsFinancingActivities
794 Repayments Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfBorrowingsClassifiedAsFinancingActivities
795 Other transactions Concept (Monetary) For Period Credit dbvt:IncreaseDecreaseFromOtherBorrowingsTransactions
796 Ending balance Concept (Monetary) As Of Credit ifrs-full:Borrowings
797 Of which - Non-current portion Concept (Monetary) As Of Credit ifrs-full:LongtermBorrowings
798 Of which - Current portion Concept (Monetary) As Of Credit ifrs-full:ShorttermBorrowings
799 Stated interest rate Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
800 Discount rate Concept (Percent) As Of dbvt:DebtDiscountRate
801 Maturity (in years) Concept (Text/String) For Period ifrs-full:BorrowingsMaturity
802 1074 - Disclosure - Financial and Other Non-Current Liabilities - Summary of Due Dates of the Financial Liabilities (Detail) Network

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803 Disclosure of financial liabilities [table] Table

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 ifrs-full:DisclosureOfFinancialLiabilitiesTable
804 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
805 Carrying amount [member] Member ifrs-full:CarryingAmountMember
806 Total, gross [member] Member ifrs-full:GrossCarryingAmountMember
807 Maturity [axis] Axis ifrs-full:MaturityAxis
808 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
809 Not later than one year [member] Member ifrs-full:NotLaterThanOneYearMember
810 Later than one year and not later than five years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanFiveYearsMember
811 More than five years [member] Member ifrs-full:LaterThanFiveYearsMember
812 Disclosure of financial liabilities [line items] LineItems ifrs-full:DisclosureOfFinancialLiabilitiesLineItems
813 Non-current conditional advances Concept (Monetary) As Of Credit ifrs-full:LongtermBorrowings
814 Non-current financial rent debts Concept (Monetary) As Of Credit dbvt:NoncurrentFinancialRentDebts
815 Other non-current liabilities Concept (Monetary) As Of Credit ifrs-full:OtherNoncurrentFinancialLiabilities
816 Current conditional advances Concept (Monetary) As Of Credit ifrs-full:ShorttermBorrowings
817 Current financial rent debts Concept (Monetary) As Of Credit dbvt:CurrentFinancialRentDebts
818 Other current liabilities Concept (Monetary) As Of Credit ifrs-full:OtherCurrentFinancialLiabilities
819 Supplier accounts payable and related payables Concept (Monetary) As Of Credit dbvt:SupplierAccountsPayableAndRelatedPayables
820 Total financial liabilities Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilities
821 1075 - Disclosure - Non-Current Provisions - Schedule of Non-Current Provisions (Detail) Network

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822 Implied Table Table

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 implied:Table
823 Disclosure of other provisions [abstract] Abstract ifrs-full:DisclosureOfOtherProvisionsAbstract
824 Pension retirement obligations Concept (Monetary) As Of Credit ifrs-full:NoncurrentProvisionsForEmployeeBenefits
825 Total Concept (Monetary) As Of Credit ifrs-full:NoncurrentProvisions
826 1076 - Disclosure - Non-Current Provisions - Schedule of Commitments for Compensation Payable to Employees Upon Their Retirement (Detail) Network

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827 Implied Table Table

*

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 implied:Table
828 Disclosure of Retirement Benefits [abstract] Abstract dbvt:DisclosureOfRetirementBenefitsAbstract
829 Beginning balance Concept (Monetary) As Of Credit ifrs-full:NoncurrentProvisions
830 Costs of services rendered (operating expense) Concept (Monetary) For Period Debit ifrs-full:ServicesExpense
831 Interest expense (financial expense) Concept (Monetary) For Period Debit ifrs-full:InterestExpense
832 Benefit paid Concept (Monetary) For Period Debit ifrs-full:BenefitsPaidOrPayable
833 Actuarial losses Concept (Monetary) For Period Debit ifrs-full:ActuarialGainsLossesArisingFromChangesInFinancialAssumptionsNetDefinedBenefitLiabilityAsset
834 Ending balance Concept (Monetary) As Of Credit ifrs-full:NoncurrentProvisions
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839 Salary increases Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreases
840 Discount rate Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfDiscountRates
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850 1080 - Disclosure - Supplier Accounts Receivable and Other Current Liabilities - Schedule of Other Current Liabilities (Details) (Detail) Network

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854 Tax liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentTaxLiabilitiesCurrent
855 Other debts Concept (Monetary) As Of Credit dbvt:OtherDebtsCurrent
856 Deferred revenues Concept (Monetary) As Of Credit ifrs-full:DeferredIncomeClassifiedAsCurrent
857 Total Concept (Monetary) As Of Credit ifrs-full:OtherCurrentLiabilities
858 1081 - Disclosure - Financial Instruments Recognized in the Consolidated Statements of Financial Position and Related Effect on the Consolidated Statements of (Loss) - Schedule of Financial Instruments Recognized in the Consolidated Statements of Financial Position and Related Effect on the Consolidated Statements of (Loss) (Detail) Network

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890 1082 - Disclosure - Operating Income - Summary of Operating Income (Detail) Network

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896 Other operating income Concept (Monetary) For Period Credit dbvt:OtherOperatingIncome1
897 Total income Concept (Monetary) For Period Credit ifrs-full:Revenue
898 1083 - Disclosure - Operating Expenses - Summary of Research and Development (Detail) Network

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903 Small equipments and other supplies Concept (Monetary) For Period Debit dbvt:SmallEquipmentsAndOtherSuppliesResearchAndDevelopmentExpenses
904 Rental Concept (Monetary) For Period Debit ifrs-full:RentalExpense
905 Conferences, travel expenses Concept (Monetary) For Period Debit ifrs-full:TravelExpense
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907 Others Concept (Monetary) For Period Debit ifrs-full:OtherExpenseByFunction
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909 1084 - Disclosure - Operating Expenses - Summary of Sales and Marketing Expenses (Detail) Network

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914 Communication and travel expenses Concept (Monetary) For Period Debit dbvt:CommunicationAndTravelExpenses
915 Others Concept (Monetary) For Period Debit ifrs-full:OtherExpenseByNature
916 Total sales and marketing expenses Concept (Monetary) For Period Debit ifrs-full:SalesAndMarketingExpense
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918 Implied Table Table

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922 Rental Concept (Monetary) For Period Debit dbvt:RentalGeneralAndAdministrativeExpense
923 Insurance policies Concept (Monetary) For Period Debit dbvt:InsurancePoliciesGeneralAndAdministrativeExpenses
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925 Depreciation and amortization Concept (Monetary) For Period Debit dbvt:DepreciationAndAmortizationGeneralAndAdministrativeExpenses
926 Others Concept (Monetary) For Period Debit dbvt:OtherGeneralAndAdministrativeExpenses
927 Total general and administrative expenses Concept (Monetary) For Period Debit ifrs-full:SellingGeneralAndAdministrativeExpense
928 1086 - Disclosure - Operating Expenses - Additional Information (Detail) Network

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929 Implied Table Table

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936 Social security contributions Concept (Monetary) For Period Debit ifrs-full:SocialSecurityContributions
937 Expenses for pension commitments Concept (Monetary) For Period Debit dbvt:ExpensesForPensionCommitments
938 Employer contribution to bonus shares Concept (Monetary) For Period Credit ifrs-full:EmployerContributions
939 Share-based payments Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForSharebasedPayments
940 Total Concept (Monetary) For Period Debit dbvt:PersonnelExpenses
941 1088 - Disclosure - Share-Based Payments - Additional Information (Detail) Network

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946 BSA [member] Member dbvt:BonsDeSouscriptiondActionsMember
947 BSA 2 [member] Member dbvt:BonsDeSouscriptiondActionsBsaTwoMember
948 Bons De Createurs D Entreprise Bce Four [member] Member dbvt:BonsDeCreateursEntrepriseBceFourMember
949 BSA 2010 [member] Member dbvt:BonsDeSouscriptiondActionsBSATwentyTenMember
950 BSAX [member] Member dbvt:BonsDeSouscriptiondActionsBSAXMember
951 BSPCE2010 [member] Member dbvt:BonsDeSouscriptionDePartsDeCreateurEntrepriseBspceTwentyTenMember
952 OPTIONS 2013 [member] Member dbvt:StockOptionsTwoThousandThirteenMember
953 Free shares [member] Member dbvt:FreeSharesMember
954 Options [member] Member dbvt:OptionsMember
955 BCE 4 [member] Member dbvt:BCEFourMember
956 BSA [member] Member dbvt:BSAMember
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958 BCE2010 [member] Member dbvt:BceTwoThousandTenMember
959 Share Option [member] Member dbvt:ShareOptionMember
960 Creation date [axis] Axis ifrs-full:CreationDateAxis
961 Default financial statements date [member] Member ifrs-full:DefaultFinancialStatementsDateMember
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963 Date of Grant 1/17/2012 [member] Member dbvt:GrantDateTwoMember
964 Date of Grant 9/25/2012 [member] Member dbvt:GrantDateThreeMember
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966 Date of Grant 6/3/2014 [member] Member dbvt:GrantDateFiveMember
967 Date of Grant 03/24/2015 [member] Member dbvt:GrantDateSixMember
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969 Date of Grant 12/15/2015 [member] Member dbvt:GrantDateEightMember
970 Date of Grant 06/21/2016 [member] Member dbvt:GrantDateNineMember
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974 Grant Date Six A [member] Member dbvt:GrantDateSixAMember
975 Grant Date Six B [member] Member dbvt:GrantDateSixBMember
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978 BSAX [member] Member dbvt:BSAXMember
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980 Ranges [member] Member ifrs-full:RangesMember
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987 First Anniversary [member] Member dbvt:FirstAnniversaryMember
988 Second Anniversary [member] Member dbvt:SecondAnniversaryMember
989 Third Anniversary [member] Member dbvt:ThirdAnniversaryMember
990 Fourth Anniversary [member] Member dbvt:FourthAnniversaryMember
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992 Share-based Payment Arrangement Tranche Two [member] Member dbvt:SharebasedPaymentArrangementTrancheTwoMember
993 Maturity [axis] Axis ifrs-full:MaturityAxis
994 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
995 Not later than one year [member] Member ifrs-full:NotLaterThanOneYearMember
996 Later Than One Year and Not Later Than Two Years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
997 Later Than Two Years and Not Later Than Three Years [member] Member ifrs-full:LaterThanTwoYearsAndNotLaterThanThreeYearsMember
998 Later Than Three Years and Not Later Than Four Years [member] Member ifrs-full:LaterThanThreeYearsAndNotLaterThanFourYearsMember
999 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
1000 Share-based payment arrangement shares issued on authorization Concept (Shares) For Period dbvt:SharebasedPaymentArrangementSharesIssuedOnAuthorization
1001 Number of options granted Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsGrantedInSharebasedPaymentArrangement
1002 Date of grant (Board of Directors) Concept (Text/String) For Period ifrs-full:DateOfGrantOfSharebasedPaymentArrangement
1003 Share based payment arrangement, vesting percentage Concept (Percent) For Period dbvt:SharebasedPaymentArrangementVestingRightsPercentage
1004 Share based payment arrangement, vesting period Concept (xbrli:durationItemType) For Period dbvt:ShareBasedPaymentArrangementVestingPeriod
1005 Share based payment arrangement, shares exercised Concept (Decimal) For Period ifrs-full:NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement
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1009 Share based payment arrangement, vesting percentage Concept (Text/String) For Period ifrs-full:DescriptionOfVestingRequirementsForSharebasedPaymentArrangement
1010 Share based payment arrangement, shares exercised Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsExercisedInSharebasedPaymentArrangement
1011 1089 - Disclosure - Share-Based Payments - Summary of Details of Share Based Payment Arrangement BSA (Detail) Network

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1012 Disclosure of terms and conditions of share-based payment arrangement [table] Table

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1016 BSA2010 [member] Member dbvt:BSATwoThousandTenMember
1017 Creation date [axis] Axis ifrs-full:CreationDateAxis
1018 Default financial statements date [member] Member ifrs-full:DefaultFinancialStatementsDateMember
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1021 Date of Grant 6/3/2014 [member] Member dbvt:GrantDateFiveMember
1022 Date of Grant 03/24/2015 [member] Member dbvt:GrantDateSixMember
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1024 Date of Grant 12/15/2015 [member] Member dbvt:GrantDateEightMember
1025 Date of Grant 06/21/2016 [member] Member dbvt:GrantDateNineMember
1026 Date of Grant 12/7/2007 [member] Member dbvt:GrantDateOneMember
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1028 Date of Grant 12/9/2016 [member] Member dbvt:GrantDateTenMember
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1036 Share-based Payment Arrangement Tranche Four [member] Member dbvt:SharebasedPaymentArrangementTrancheFourMember
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1039 Plan expiration date Concept (Text/String) For Period dbvt:ShareBasedPaymentArrangementPlanExpirationDate
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1042 Exercise price (in euros) Concept (Monetary) For Period ifrs-full:WeightedAverageExercisePriceOfOtherEquityInstrumentsGrantedInSharebasedPaymentArrangement
1043 Grant date share fair value (in euros) Concept (Monetary) As Of Credit ifrs-full:WeightedAverageFairValueAtMeasurementDateShareOptionsGranted
1044 Expected volatility Concept (Percent) For Period ifrs-full:DescriptionOfExpectedVolatilityShareOptionsGranted
1045 Average life of BSA (in years) Concept (Decimal) For Period ifrs-full:DescriptionOfOptionLifeShareOptionsGranted
1046 Discount rate Concept (Percent) For Period dbvt:ShareBasedPaymentArrangementNonOptionsGrantedDiscountRate
1047 Expected dividends Concept (Percent) For Period ifrs-full:ExpectedDividendAsPercentageShareOptionsGranted
1048 Fair value per BSA (in euros) Concept (Share) For Period dbvt:ShareBasedPaymentArrangementOtherEquityInstrumentsFairValuePerShare
1049 Grant date share fair value (in euros) Concept (Share) For Period dbvt:ShareBasedPaymentArrangementOtherEquityInstrumentsGrantsInPeriodWeightedAverageGrantDateFairValue
1050 Vesting period (years) Concept (xbrli:durationItemType) For Period dbvt:ShareBasedPaymentArrangementShareOptionsVestingPeriod
1051 Number of options granted Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsGrantedInSharebasedPaymentArrangement
1052 Share entitlement per BSA Concept (Shares) For Period dbvt:NumberOfSharesEntitled
1053 Exercise price (in euros) Concept (Decimal) For Period ifrs-full:NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement
1054 Grant date share fair value (in euros) Concept (Monetary) As Of Credit ifrs-full:WeightedAverageFairValueAtMeasurementDateOtherEquityInstrumentsGranted
1055 Discount rate Concept (Percent) For Period dbvt:ShareBasedPaymentArrangementOptionsGrantedDiscountRate
1056 Fair value per BSA (in euros) Concept (Share) For Period dbvt:ShareBasedPaymentArrangementFairValuePerShareGranted
1057 1090 - Disclosure - Share-Based Payments - Summary of Details of Share Based Payment Arrangement BSA (Parenthetical) (Detail) Network

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1058 Disclosure of terms and conditions of share-based payment arrangement [table] Table

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1059 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
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1061 BSA [member] Member dbvt:BonsDeSouscriptiondActionsMember
1062 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
1063 Description of price per share entitlement Concept (Text/String) For Period dbvt:DescriptionOfShareBasedPaymentArrangementShareEntitlement
1064 1091 - Disclosure - Share-Based Payments - Summary of Change in BSA Outstanding Number (Detail) Network

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1065 Disclosure of terms and conditions of share-based payment arrangement [table] Table

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1066 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
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1068 BSA [member] Member dbvt:BonsDeSouscriptiondActionsMember
1069 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
1070 Balance at beginning of period Concept (Decimal) As Of ifrs-full:NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
1071 Granted during the period Concept (Decimal) For Period ifrs-full:NumberOfInstrumentsOtherEquityInstrumentsGranted
1072 Forfeited during the period Concept (Decimal) For Period ifrs-full:NumberOfOtherEquityInstrumentsForfeitedInSharebasedPaymentArrangement
1073 Exercised during the period Concept (Decimal) For Period ifrs-full:NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement
1074 Expired during the period Concept (Decimal) For Period ifrs-full:NumberOfOtherEquityInstrumentsExpiredInSharebasedPaymentArrangement
1075 Balance at end of period Concept (Decimal) As Of ifrs-full:NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
1076 1092 - Disclosure - Share-Based Payments - Schedule of Breakdown of the Closing Balance BSA (Detail) Network

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1077 Disclosure of terms and conditions of share-based payment arrangement [table] Table

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1078 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
1079 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
1080 Bons de souscriptiond actions 2010 [member] Member dbvt:BonsDeSouscriptiondActionsTwoThousandTenMember
1081 BSA [member] Member dbvt:BonsDeSouscriptiondActionsMember
1082 Range [axis] Axis ifrs-full:RangeAxis
1083 Ranges [member] Member ifrs-full:RangesMember
1084 Exercise price 65 [member] Member dbvt:ExercisePriceOneMember
1085 Exercise price 8.59 [member] Member dbvt:ExercisePriceThreeMember
1086 Exercise price 8.1 [Member] Member dbvt:ExercisePriceFourMember
1087 Exercise price18.79 [member] Member dbvt:ExercisePriceFiveMember
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1089 Exercise price 66.06 [member] Member dbvt:ExercisePriceEightMember
1090 Exercise price 64.14 [member] Member dbvt:ExercisePriceNineMember
1091 Exercise price 52.97 [member] Member dbvt:ExercisePriceTenMember
1092 Exercise price 69.75 [member] Member dbvt:ExercisePriceElevenMember
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1094 Exercise Price Thirteen [Member] Member dbvt:ExercisePriceThirteenMember
1095 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
1096 Outstanding Concept (Decimal) As Of ifrs-full:NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
1097 Exercisable Concept (Decimal) As Of ifrs-full:NumberOfOtherEquityInstrumentsExercisableInSharebasedPaymentArrangement
1098 1093 - Disclosure - Share-Based Payments - Schedule of Breakdown of the Closing Balance (Detail) Network

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1099 Disclosure of terms and conditions of share-based payment arrangement [table] Table

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1100 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
1101 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
1102 Bons de souscriptiond actions 2010 [member] Member dbvt:BonsDeSouscriptiondActionsTwoThousandTenMember
1103 BSA [member] Member dbvt:BonsDeSouscriptiondActionsMember
1104 Range [axis] Axis ifrs-full:RangeAxis
1105 Ranges [member] Member ifrs-full:RangesMember
1106 Exercise price 65 [member] Member dbvt:ExercisePriceOneMember
1107 Exercise price 5.13 [member] Member dbvt:ExercisePriceTwoMember
1108 Exercise price 8.59 [member] Member dbvt:ExercisePriceThreeMember
1109 Exercise price 8.1 [Member] Member dbvt:ExercisePriceFourMember
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1111 Exercise price 43.00 [member] Member dbvt:ExercisePriceSixMember
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1113 Exercise price 64.14 [member] Member dbvt:ExercisePriceNineMember
1114 Exercise price 52.97 [member] Member dbvt:ExercisePriceTenMember
1115 Exercise price 69.75 [member] Member dbvt:ExercisePriceElevenMember
1116 Exercise price 59.05 [member] Member dbvt:ExercisePriceTwelveMember
1117 Exercise Price Thirteen [Member] Member dbvt:ExercisePriceThirteenMember
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1119 Exercise price Concept (Share) As Of dbvt:ExercisePriceOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
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 http://www.dbv-technologies.com/taxonomy/role/DisclosureShareBasedPaymentsSummaryDetailsOfBCE4
1121 Disclosure of terms and conditions of share-based payment arrangement [table] Table

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 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
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1123 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1124 Not later than one year [member] Member ifrs-full:NotLaterThanOneYearMember
1125 Later Than One Year and Not Later Than Two Years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
1126 Later Than Two Years and Not Later Than Three Years [member] Member ifrs-full:LaterThanTwoYearsAndNotLaterThanThreeYearsMember
1127 Later Than Three Years and Not Later Than Four Years [member] Member ifrs-full:LaterThanThreeYearsAndNotLaterThanFourYearsMember
1128 Later Than Four Years and Not Later Than Five Years [member] Member ifrs-full:LaterThanFourYearsAndNotLaterThanFiveYearsMember
1129 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
1130 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
1131 BCE 4 [member] Member dbvt:BCEFourMember
1132 Valuation techniques used in fair value measurement [axis] Axis ifrs-full:ValuationTechniquesUsedInFairValueMeasurementAxis
1133 Valuation techniques [member] Member ifrs-full:ValuationTechniquesMember
1134 Black and Scholes Method [member] Member dbvt:BlackAndScholesMethodMember
1135 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
1136 Date of grant (Board of Directors) Concept (Text/String) For Period ifrs-full:DateOfGrantOfSharebasedPaymentArrangement
1137 Vesting period (years) Concept (xbrli:durationItemType) For Period dbvt:VestingPeriod
1138 Plan expiration date Concept (Text/String) For Period dbvt:ShareBasedPaymentArrangementPlanExpirationDate
1139 Number of options granted Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsGrantedInSharebasedPaymentArrangement
1140 Share entitlement per BCE4 Concept (Percent) For Period dbvt:ShareBasedPaymentShareEntitlementPerWarrant
1141 Exercise price (in euros) Concept (Monetary) For Period ifrs-full:ExercisePriceShareOptionsGranted
1142 Grant date share fair value (in euros) Concept (Monetary) As Of Credit ifrs-full:WeightedAverageFairValueAtMeasurementDateOtherEquityInstrumentsGranted
1143 Expected volatility Concept (Percent) For Period ifrs-full:DescriptionOfExpectedVolatilityShareOptionsGranted
1144 Average life of BCE4 (in years) Concept (Decimal) For Period ifrs-full:DescriptionOfOptionLifeShareOptionsGranted
1145 Discount rate Concept (Percent) For Period dbvt:ShareBasedPaymentDiscountRate
1146 Expected dividends Concept (Percent) For Period ifrs-full:ExpectedDividendAsPercentageShareOptionsGranted
1147 Performance conditions Concept (Percent) For Period dbvt:ShareBasedPaymentPerformanceConditions
1148 Fair value per BCE4 (in euros) Concept (Percent) For Period dbvt:ShareBasedPaymentFairValuePerWarrant
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 http://www.dbv-technologies.com/taxonomy/role/DisclosureShareBasedPaymentsSummaryDetailsOfBCE4Parenthetical
1150 Disclosure of terms and conditions of share-based payment arrangement [table] Table

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 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
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1153 BCE 4 [member] Member dbvt:BCEFourMember
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1155 Description of price per share entitlement Concept (Text/String) For Period dbvt:DescriptionOfShareBasedPaymentArrangementShareEntitlement
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*

 http://www.dbv-technologies.com/taxonomy/role/DisclosureShareBasedPaymentsSummaryOfChangeInNumberOfBCE2Outstanding
1157 Disclosure of terms and conditions of share-based payment arrangement [table] Table

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 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
1158 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
1159 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
1160 BCE 4 [member] Member dbvt:BCEFourMember
1161 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
1162 Balance at beginning of period Concept (Decimal) As Of ifrs-full:NumberOfOutstandingShareOptions
1163 Granted during the period Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsGrantedInSharebasedPaymentArrangement
1164 Forfeited during the period Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsForfeitedInSharebasedPaymentArrangement
1165 Exercised during the period Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsExercisedInSharebasedPaymentArrangement
1166 Expired during the period Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsExpiredInSharebasedPaymentArrangement
1167 Balance at end of period Concept (Decimal) As Of ifrs-full:NumberOfOutstandingShareOptions
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*

 http://www.dbv-technologies.com/taxonomy/role/DisclosureShareBasedPaymentsScheduleOfBreakdownOfTheClosingBalanceBCE4
1169 Disclosure of terms and conditions of share-based payment arrangement [table] Table

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 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
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1171 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
1172 BCE 4 [member] Member dbvt:BCEFourMember
1173 Ranges of exercise prices for outstanding share options [axis] Axis ifrs-full:RangesOfExercisePricesForOutstandingShareOptionsAxis
1174 Ranges of exercise prices for outstanding share options [member] Member ifrs-full:RangesOfExercisePricesForOutstandingShareOptionsMember
1175 Exercise price 65 [member] Member dbvt:ExercisePriceOneMember
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1177 Outstanding Concept (Decimal) As Of ifrs-full:NumberOfOutstandingShareOptions
1178 Exercisable Concept (Decimal) As Of ifrs-full:NumberOfShareOptionsExercisableInSharebasedPaymentArrangement
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 http://www.dbv-technologies.com/taxonomy/role/DisclosureShareBasedPaymentsSummaryOfDetailsOfShareBasedPaymentArrangementBSA2010
1180 Disclosure of terms and conditions of share-based payment arrangement [table] Table

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 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
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1182 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1183 Not later than one year [member] Member ifrs-full:NotLaterThanOneYearMember
1184 Later Than One Year and Not Later Than Two Years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
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1186 Later Than Three Years and Not Later Than Four Years [member] Member ifrs-full:LaterThanThreeYearsAndNotLaterThanFourYearsMember
1187 0.9 Year [member] Member dbvt:ZeroPointNineYearMember
1188 1.9 Year [member] Member dbvt:OnePointNineYearMember
1189 2.9 Year [member] Member dbvt:TwoPointNineYearMember
1190 3.9 Year [member] Member dbvt:ThreePointNineYearMember
1191 0.5 Year [member] Member dbvt:ZeroPointFiveYearMember
1192 1.5 Year [member] Member dbvt:OnePointFiveYearMember
1193 2.5 Year [member] Member dbvt:TwoPointFiveYearMember
1194 3.5 Year [member] Member dbvt:ThreePointFiveYearMember
1195 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
1196 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
1197 BSA2010 [member] Member dbvt:BSATwoThousandTenMember
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1199 Vesting period (years) Concept (xbrli:durationItemType) For Period dbvt:ShareBasedPaymentArrangementShareOptionsVestingPeriod
1200 Plan expiration date Concept (Text/String) For Period dbvt:ShareBasedPaymentArrangementPlanExpirationDate
1201 Number of options granted Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsGrantedInSharebasedPaymentArrangement
1202 Share entitlement per BSA Concept (Shares) For Period dbvt:NumberOfSharesEntitled
1203 Exercise price (in euros) Concept (Decimal) For Period ifrs-full:NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement
1204 Grant date share fair value (in euros) Concept (Monetary) As Of Credit ifrs-full:WeightedAverageFairValueAtMeasurementDateOtherEquityInstrumentsGranted
1205 Expected volatility Concept (Percent) For Period ifrs-full:DescriptionOfExpectedVolatilityShareOptionsGranted
1206 Average life of BSA (in years) Concept (Decimal) For Period ifrs-full:DescriptionOfOptionLifeShareOptionsGranted
1207 Discount rate Concept (Percent) For Period dbvt:ShareBasedPaymentArrangementOptionsGrantedDiscountRate
1208 Expected dividends Concept (Percent) For Period ifrs-full:ExpectedDividendAsPercentageShareOptionsGranted
1209 Performance conditions Concept (Text/String) For Period dbvt:PerformanceConditions
1210 Fair value per BSA (in euros) Concept (Share) For Period dbvt:ShareBasedPaymentArrangementFairValuePerShareGranted
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 http://www.dbv-technologies.com/taxonomy/role/DisclosureShareBasedPaymentsShareBasedPaymentsSummaryOfChangeInNumberOfBSA2010Outstanding
1212 Disclosure of terms and conditions of share-based payment arrangement [table] Table

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 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
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1215 BSA2010 [member] Member dbvt:BSATwoThousandTenMember
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1217 Balance at beginning of period Concept (Decimal) As Of ifrs-full:NumberOfOutstandingShareOptions
1218 Granted during the period Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsGrantedInSharebasedPaymentArrangement
1219 Forfeited during the period Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsForfeitedInSharebasedPaymentArrangement
1220 Exercised during the period Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsExercisedInSharebasedPaymentArrangement
1221 Expired during the period Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsExpiredInSharebasedPaymentArrangement
1222 Balance at end of period Concept (Decimal) As Of ifrs-full:NumberOfOutstandingShareOptions
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 http://www.dbv-technologies.com/taxonomy/role/DisclosureShareBasedPaymentsShareBasedPaymentsDisclosureOfDetailsOfBreakdownOfTheClosingBalanceBSA2010
1224 Disclosure of terms and conditions of share-based payment arrangement [table] Table

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 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
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1226 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
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1230 Exercisable Concept (Decimal) As Of ifrs-full:NumberOfShareOptionsExercisableInSharebasedPaymentArrangement
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 http://www.dbv-technologies.com/taxonomy/role/DisclosureShareBasedPaymentsShareBasedPaymentsDisclosureOfDetailsOfBreakdownOfTheClosingBalanceBSA2010Parenthetical
1232 Disclosure of terms and conditions of share-based payment arrangement [table] Table

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 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
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1234 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
1235 BSA2010 [member] Member dbvt:BSATwoThousandTenMember
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1237 Exercise price Concept (Monetary) As Of ifrs-full:ExercisePriceOfOutstandingShareOptions
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*

 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
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1242 Not later than one year [member] Member ifrs-full:NotLaterThanOneYearMember
1243 Later Than One Year and Not Later Than Two Years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
1244 Later Than Two Years and Not Later Than Three Years [member] Member ifrs-full:LaterThanTwoYearsAndNotLaterThanThreeYearsMember
1245 Later Than Three Years and Not Later Than Four Years [member] Member ifrs-full:LaterThanThreeYearsAndNotLaterThanFourYearsMember
1246 Entity Listings, Exchange [Axis] Axis dei:EntityListingsExchangeAxis
1247 Exchange [Domain] Member dei:ExchangeDomain
1248 BSAX [member] Member dbvt:BSAXMember
1249 Valuation techniques used in fair value measurement [axis] Axis ifrs-full:ValuationTechniquesUsedInFairValueMeasurementAxis
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1251 Option pricing model [member] Member ifrs-full:OptionPricingModelMember
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1253 Vesting period (years) Concept (xbrli:durationItemType) For Period dbvt:VestingPeriod
1254 Plan expiration date Concept (Text/String) For Period dbvt:ShareBasedPaymentArrangementPlanExpirationDate
1255 Number of BSAX granted Concept (Monetary) For Period ifrs-full:WeightedAverageSharePriceShareOptionsGranted
1256 Share entitlement per BSAX Concept (Share) For Period dbvt:ShareBasedPaymentArrangementShareEntitlementPerShareOptionGranted
1257 Exercise price (in euros) Concept (Monetary) For Period ifrs-full:ExercisePriceShareOptionsGranted
1258 Grant date share fair value (in euros) Concept (Monetary) As Of Credit ifrs-full:WeightedAverageFairValueAtMeasurementDateOtherEquityInstrumentsGranted
1259 Expected volatility Concept (Percent) For Period ifrs-full:DescriptionOfExpectedVolatilityShareOptionsGranted
1260 Average life of BSAX (in years) Concept (Decimal) For Period ifrs-full:DescriptionOfOptionLifeShareOptionsGranted
1261 Discount rate Concept (Percent) For Period dbvt:DiscountRate
1262 Expected dividends Concept (Percent) For Period ifrs-full:ExpectedDividendAsPercentageShareOptionsGranted
1263 Performance conditions Concept (Text/String) For Period dbvt:PerformanceConditions
1264 Fair value per BSAX (in euros) Concept (Share) As Of dbvt:FairValuePricePerShare
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*

 http://www.dbv-technologies.com/taxonomy/role/DisclosureShareBasedPaymentsSummaryOfChangeInNumberOfBSAXOutstanding
1266 Disclosure of terms and conditions of share-based payment arrangement [table] Table

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 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
1267 Entity Listings, Exchange [Axis] Axis dei:EntityListingsExchangeAxis
1268 Exchange [Domain] Member dei:ExchangeDomain
1269 BSAX [member] Member dbvt:BSAXMember
1270 Statement scenario [axis] Axis dbvt:StatementScenarioAxis
1271 Statement scenario [member] Member dbvt:StatementScenarioMember
1272 Scenario, Previously Reported [member] Member srt:ScenarioPreviouslyReportedMember
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1274 Balance at beginning of period Concept (Decimal) As Of ifrs-full:NumberOfOutstandingShareOptions
1275 Granted during the period Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsGrantedInSharebasedPaymentArrangement
1276 Forfeited during the period Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsForfeitedInSharebasedPaymentArrangement
1277 Exercised during the period Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsExercisedInSharebasedPaymentArrangement
1278 Expired during the period Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsExpiredInSharebasedPaymentArrangement
1279 Balance at end of period Concept (Decimal) As Of ifrs-full:NumberOfOutstandingShareOptions
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 http://www.dbv-technologies.com/taxonomy/role/DisclosureShareBasedPaymentsDisclosureOfDetailsOfBreakdownOfTheClosingBalanceBSAX
1281 Disclosure of terms and conditions of share-based payment arrangement [table] Table

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 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
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1287 Exercisable Concept (Decimal) As Of ifrs-full:NumberOfShareOptionsExercisableInSharebasedPaymentArrangement
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 http://www.dbv-technologies.com/taxonomy/role/DisclosureShareBasedPaymentsDisclosureOfDetailsOfBreakdownOfTheClosingBalanceBSAXParenthetical
1289 Disclosure of terms and conditions of share-based payment arrangement [table] Table

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 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
1290 Entity Listings, Exchange [Axis] Axis dei:EntityListingsExchangeAxis
1291 Exchange [Domain] Member dei:ExchangeDomain
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1294 Exercise price Concept (Monetary) For Period ifrs-full:ExercisePriceShareOptionsGranted
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 http://www.dbv-technologies.com/taxonomy/role/DisclosureShareBasedPaymentsSummaryOfDetailsOfShareBasedPaymentArrangementBCE2010
1296 Disclosure of terms and conditions of share-based payment arrangement [table] Table

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 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
1297 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
1298 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
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1300 Maturity [axis] Axis ifrs-full:MaturityAxis
1301 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1302 Not later than one year [member] Member ifrs-full:NotLaterThanOneYearMember
1303 Later Than One Year and Not Later Than Two Years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
1304 Later Than Two Years and Not Later Than Three Years [member] Member ifrs-full:LaterThanTwoYearsAndNotLaterThanThreeYearsMember
1305 Later Than Three Years and Not Later Than Four Years [member] Member ifrs-full:LaterThanThreeYearsAndNotLaterThanFourYearsMember
1306 Creation date [axis] Axis ifrs-full:CreationDateAxis
1307 Default financial statements date [member] Member ifrs-full:DefaultFinancialStatementsDateMember
1308 Date of Grant 12/7/2007 [member] Member dbvt:GrantDateOneMember
1309 Date of Grant 1/17/2012 [member] Member dbvt:GrantDateTwoMember
1310 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
1311 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
1312 Board of Director [member] Member dbvt:BoardOfDirectorMember
1313 Valuation techniques used in fair value measurement [axis] Axis ifrs-full:ValuationTechniquesUsedInFairValueMeasurementAxis
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1315 Black and Scholes Method [member] Member dbvt:BlackAndScholesMethodMember
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1318 Plan expiration date Concept (Text/String) For Period dbvt:ShareBasedPaymentArrangementPlanExpirationDate
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1320 Share entitlement per BCE2010(1) Concept (Share) For Period dbvt:ShareBasedPaymentArrangementShareEntitlementPerShareOptionGranted
1321 Exercise price Concept (Monetary) For Period ifrs-full:WeightedAverageExercisePriceOfOtherEquityInstrumentsGrantedInSharebasedPaymentArrangement
1322 Valuation method used Abstract dbvt:ValuationMethodUsedAbstract
1323 Grant date share fair value Concept (Monetary) As Of Credit ifrs-full:WeightedAverageFairValueAtMeasurementDateShareOptionsGranted
1324 Expected volatility Concept (Percent) For Period ifrs-full:DescriptionOfExpectedVolatilityShareOptionsGranted
1325 Average life of BCE2010 Concept (Decimal) For Period ifrs-full:DescriptionOfOptionLifeShareOptionsGranted
1326 Discount rate(2) Concept (Percent) For Period dbvt:ShareBasedPaymentArrangementNonOptionsGrantedDiscountRate
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1328 Fair value per BCE2010 Concept (Share) For Period dbvt:ShareBasedPaymentArrangementOtherEquityInstrumentsFairValuePerShare
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 http://www.dbv-technologies.com/taxonomy/role/DisclosureShareBasedPaymentsSummaryOfDetailsOfShareBasedPaymentArrangementBCE2010Parenthetical
1330 Disclosure of terms and conditions of share-based payment arrangement [table] Table

*

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 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
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 http://www.dbv-technologies.com/taxonomy/role/DisclosureShareBasedPaymentsSummaryOfChangeInNumberOfBCE2010Outstanding
1337 Disclosure of terms and conditions of share-based payment arrangement [table] Table

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 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
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1343 Granted during the period Concept (Decimal) For Period ifrs-full:NumberOfInstrumentsOtherEquityInstrumentsGranted
1344 Forfeited during the period Concept (Decimal) For Period ifrs-full:NumberOfOtherEquityInstrumentsForfeitedInSharebasedPaymentArrangement
1345 Exercised during the period Concept (Decimal) For Period ifrs-full:NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement
1346 Expired during the period Concept (Decimal) For Period ifrs-full:NumberOfOtherEquityInstrumentsExpiredInSharebasedPaymentArrangement
1347 Balance at end of period Concept (Decimal) As Of ifrs-full:NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
1348 1109 - Disclosure - Share-Based Payments - Disclosure of Details of Breakdown of the Closing Balance BCE 2010 (Detail) Network

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 http://www.dbv-technologies.com/taxonomy/role/DisclosureShareBasedPaymentsDisclosureOfDetailsOfBreakdownOfTheClosingBalanceBCE2010
1349 Disclosure of terms and conditions of share-based payment arrangement [table] Table

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 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
1350 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
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1355 Exercisable Concept (Decimal) As Of ifrs-full:NumberOfOtherEquityInstrumentsExercisableInSharebasedPaymentArrangement
1356 Exercise price, Exercisable Concept (Monetary) As Of ifrs-full:WeightedAverageExercisePriceOfShareOptionsExercisableInSharebasedPaymentArrangement
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 http://www.dbv-technologies.com/taxonomy/role/DisclosureShareBasedPaymentsDisclosureOfDetailsOfBreakdownOfTheClosingBalanceBCE2010Parenthetical
1358 Disclosure of terms and conditions of share-based payment arrangement [table] Table

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*

 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
1359 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
1360 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
1361 BCE2010 [member] Member dbvt:BceTwoThousandTenMember
1362 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
1363 Exercise price, outstanding Concept (Monetary) As Of ifrs-full:WeightedAverageExercisePriceOfShareOptionsOutstandingInSharebasedPaymentArrangement
1364 1111 - Disclosure - Share-Based Payment - Additional information (Detail) Network

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*

 http://www.dbv-technologies.com/taxonomy/role/DisclosureShareBasedPaymentAdditionalInformation
1365 Disclosure of terms and conditions of share-based payment arrangement [table] Table

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 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
1366 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
1367 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
1368 Share Option [member] Member dbvt:ShareOptionMember
1369 Range [axis] Axis ifrs-full:RangeAxis
1370 Ranges [member] Member ifrs-full:RangesMember
1371 Top of range [member] Member ifrs-full:TopOfRangeMember
1372 Creation date [axis] Axis ifrs-full:CreationDateAxis
1373 Default financial statements date [member] Member ifrs-full:DefaultFinancialStatementsDateMember
1374 Date of Grant 11/19/2015 [member] Member dbvt:GrantDateSevenMember
1375 Date of Grant 12/15/2015 [member] Member dbvt:GrantDateEightMember
1376 Date of Grant 06/21/2016 [member] Member dbvt:GrantDateNineMember
1377 2018 grant date eight [member] Member dbvt:TwoThousandEighteenGrantDateEightMember
1378 2018 grant date nine [member] Member dbvt:TwoThousandEighteenGrantDateNineMember
1379 Maturity [axis] Axis ifrs-full:MaturityAxis
1380 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1381 Not later than one year [member] Member ifrs-full:NotLaterThanOneYearMember
1382 Later Than One Year and Not Later Than Two Years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
1383 24 months [Member] Member dbvt:TwoYearMember
1384 Later Than Two Years and Not Later Than Three Years [member] Member ifrs-full:LaterThanTwoYearsAndNotLaterThanThreeYearsMember
1385 36 months [Member] Member dbvt:ThreeYearMember
1386 Later Than Three Years and Not Later Than Four Years [member] Member ifrs-full:LaterThanThreeYearsAndNotLaterThanFourYearsMember
1387 48 months [Member] Member dbvt:FourYearMember
1388 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
1389 Share based payment arrangement, date of grant Concept (Text/String) For Period ifrs-full:DateOfGrantOfSharebasedPaymentArrangement
1390 Share based payment arrangement, shares exercised Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsExercisedInSharebasedPaymentArrangement
1391 Share based payment arrangement, vesting percentage Concept (Percent) For Period dbvt:SharebasedPaymentArrangementVestingRightsPercentage
1392 Vesting period (years) Concept (xbrli:durationItemType) For Period dbvt:ShareBasedPaymentArrangementVestingPeriod
1393 Number of options granted Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsGrantedInSharebasedPaymentArrangement
1394 1112 - Disclosure - Share-Based Payments - Summary of Details of Share Based Payment Arrangement SO (Detail) Network

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*

 http://www.dbv-technologies.com/taxonomy/role/DisclosureShareBasedPaymentsSummaryOfDetailsOfShareBasedPaymentArrangementSO
1395 Disclosure of terms and conditions of share-based payment arrangement [table] Table

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*

 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
1396 Range [axis] Axis ifrs-full:RangeAxis
1397 Ranges [member] Member ifrs-full:RangesMember
1398 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
1399 Top of range [member] Member ifrs-full:TopOfRangeMember
1400 Creation date [axis] Axis ifrs-full:CreationDateAxis
1401 Default financial statements date [member] Member ifrs-full:DefaultFinancialStatementsDateMember
1402 Grant Date 9/18/2013 [member] Member dbvt:GrantDateThirtyFiveMember
1403 Date of Grant 6/3/2014 [member] Member dbvt:GrantDateFiveMember
1404 Grant Date 6/23/2015 [member] Member dbvt:GrantDateThirtySixMember
1405 Date of Grant 11/19/2015 [member] Member dbvt:GrantDateSevenMember
1406 Grant Date 1/4/2016 [member] Member dbvt:GrantDateThirtySevenMember
1407 Grant Date 4/21/16 [member] Member dbvt:GrantDateThirtyEightMember
1408 Grant Date 5/2/16 [member] Member dbvt:GrantDateThirtyNineMember
1409 Date of Grant 06/21/2016 [member] Member dbvt:GrantDateNineMember
1410 Grant Date 8/1/2016 [member] Member dbvt:GrantDateFortyMember
1411 Grant Date 9/15/2016 [member] Member dbvt:GrantDateFortyOneMember
1412 Grant Date 10/17/2016 [member] Member dbvt:GrantDateFortyTwoMember
1413 Grant Date 11/15/2016 [member] Member dbvt:GrantDateFortyFourMember
1414 Date of Grant 12/9/2016 [member] Member dbvt:GrantDateTenMember
1415 Grant Date 12/15/2016 [member] Member dbvt:GrantDateFortyNineMember
1416 Grant Date 6/22/2018 [member] Member dbvt:GrantDateThirtyOneMember
1417 Grant Date 7/16/2018 [member] Member dbvt:GrantDateTwentyFiveMember
1418 Grant Date 8/15/2018 [member] Member dbvt:GrantDateTwentySixMember
1419 Grant Date 9/17/2018 [member] Member dbvt:GrantDateTwentySevenMember
1420 Grant Date 10/15/2018 [member] Member dbvt:GrantDateTwentyEightMember
1421 Grant Date 11/15/2018 [member] Member dbvt:GrantDateTwentyNineMember
1422 Grant Date 12/17/2018 [member] Member dbvt:GrantDateThirtyMember
1423 Grant Date 6/9/2018 [member] Member dbvt:GrantDateThirtyFourMember
1424 Grant Date 11/29/2018 [member] Member dbvt:GrantDateThirtyTwoMember
1425 Grant Date 12/12/2018 [member] Member dbvt:GrantDateThirtyThreeMember
1426 Date of Grant 1/16/2017 [member] Member dbvt:GrantDateFiftyMember
1427 Grant Date 3/15/2017 [member] Member dbvt:GrantDateThirteenMember
1428 Date of Grant 4/18/2017 [member] Member dbvt:GrantDateFiftyOneMember
1429 Date of Grant 06/15/2017 [member] Member dbvt:GrantDateElevenMember
1430 Grant Date 6/15/2017 [member] Member dbvt:GrantDateSixteenMember
1431 Date of Grant 7/17/2017 [member] Member dbvt:GrantDateFiftyTwoMember
1432 Grant Date 9/15/2017 [member] Member dbvt:GrantDateSeventeenMember
1433 Grant Date 12/5/2017 [member] Member dbvt:GrantDateTwentyFourMember
1434 Grant Date 12/15/2017 [member] Member dbvt:GrantDateEighteenMember
1435 Grant Date 1/15/2018 [member] Member dbvt:GrantDateNineteenMember
1436 Grant Date 4/16/2018 [member] Member dbvt:GrantDateTwentyOneMember
1437 Grant Date 5/15/2018 [member] Member dbvt:GrantDateTwentyTwoMember
1438 Grant Date 6/15/2018 [member] Member dbvt:GrantDateTwentyThreeMember
1439 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
1440 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
1441 Share Option [member] Member dbvt:ShareOptionMember
1442 Valuation techniques used in fair value measurement [axis] Axis ifrs-full:ValuationTechniquesUsedInFairValueMeasurementAxis
1443 Valuation techniques [member] Member ifrs-full:ValuationTechniquesMember
1444 Black and Scholes Method [member] Member dbvt:BlackAndScholesMethodMember
1445 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
1446 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
1447 Board of Director [member] Member dbvt:BoardOfDirectorMember
1448 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
1449 Vesting period (years) Concept (xbrli:durationItemType) For Period dbvt:ShareBasedPaymentArrangementVestingPeriod
1450 Grant date share fair value Concept (Monetary) As Of Credit ifrs-full:WeightedAverageFairValueAtMeasurementDateShareOptionsGranted
1451 Expected volatility Concept (Percent) For Period ifrs-full:DescriptionOfExpectedVolatilityShareOptionsGranted
1452 Expected volatility Concept (Percent) For Period dbvt:DescriptionOfExpectedVolatilityOtherEquityInstrumentsGranted
1453 Average life of SO Concept (Decimal) For Period ifrs-full:DescriptionOfOptionLifeShareOptionsGranted
1454 Discount rate Concept (Percent) For Period dbvt:ShareBasedPaymentArrangementOptionsGrantedDiscountRate
1455 Expected dividends Concept (Percent) For Period ifrs-full:ExpectedDividendAsPercentageShareOptionsGranted
1456 Fair value per SO Concept (Share) For Period dbvt:ShareBasedPaymentArrangementFairValuePerShareGranted
1457 Plan expiration date Concept (Text/String) For Period dbvt:ShareBasedPaymentArrangementPlanExpirationDate
1458 Number of options granted Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsGrantedInSharebasedPaymentArrangement
1459 Share entitlement per SO Concept (Share) For Period dbvt:ShareBasedPaymentArrangementShareEntitlementPerShareOptionGranted
1460 Exercise price Concept (Monetary) For Period ifrs-full:WeightedAverageExercisePriceOfShareOptionsGrantedInSharebasedPaymentArrangement
1461 1113 - Disclosure - Share-Based Payments - Disclosure of Change in Number of Share Options Outstanding (Detail) Network

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 http://www.dbv-technologies.com/taxonomy/role/DisclosureShareBasedPaymentsDisclosureOfChangeInNumberOfShareOptionsOutstanding
1462 Disclosure of terms and conditions of share-based payment arrangement [table] Table

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*

 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
1463 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
1464 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
1465 Share Option [member] Member dbvt:ShareOptionMember
1466 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
1467 Balance at beginning of period Concept (Decimal) As Of ifrs-full:NumberOfOutstandingShareOptions
1468 Granted during the period Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsGrantedInSharebasedPaymentArrangement
1469 Forfeited during the period Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsForfeitedInSharebasedPaymentArrangement
1470 Exercised during the period Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsExercisedInSharebasedPaymentArrangement
1471 Expired during the period Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsExpiredInSharebasedPaymentArrangement
1472 Balance at end of period Concept (Decimal) As Of ifrs-full:NumberOfOutstandingShareOptions
1473 1114 - Disclosure - Share-Based Payments - Disclosure of Details of Breakdown of the Closing Balance SO (Detail) Network

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 http://www.dbv-technologies.com/taxonomy/role/DisclosureShareBasedPaymentsDisclosureOfDetailsOfBreakdownOfTheClosingBalanceSO
1474 Disclosure of terms and conditions of share-based payment arrangement [table] Table

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*

 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
1475 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
1476 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
1477 Share Option [member] Member dbvt:ShareOptionMember
1478 Ranges of exercise prices for outstanding share options [axis] Axis ifrs-full:RangesOfExercisePricesForOutstandingShareOptionsAxis
1479 Ranges of exercise prices for outstanding share options [member] Member ifrs-full:RangesOfExercisePricesForOutstandingShareOptionsMember
1480 Exercise Price of Euro 7.57 [member] Member dbvt:ExercisePriceSevenPointFiveSevenMember
1481 Exercise Price of Euro 19.01 [member] Member dbvt:ExercisePriceNineteenPointZeroOneMember
1482 Exercise Price of Euro 48.90 [member] Member dbvt:ExercisePriceFortyEightPointNineZeroMember
1483 Exercise Price of Euro 66.06 [Member] Member dbvt:ExercisePriceSixtySixPointZeroSixMember
1484 Exercise Price of Euro 65.68 [member] Member dbvt:ExercisePriceSixtyFivePointSixEightMember
1485 Exercise Price of Euro 62.82 [member] Member dbvt:ExercisePriceSixtyTwoPointEightTwoMember
1486 Exercise Price of Euro 59.04 [member] Member dbvt:ExercisePriceFiftyNinePointZeroFourMember
1487 Exercise Price of Euro 53.96 [member] Member dbvt:ExercisePriceFiftyThreePointNineSixMember
1488 Exercise Price of Euro 62.24 [member] Member dbvt:ExercisePriceSixtyTwoPointTwoFourMember
1489 Exercise Price of Euro 62.80 [member] Member dbvt:ExercisePriceSixtyTwoPointEightZeroMember
1490 Exercise Price of Euro 64.39 [member] Member dbvt:ExercisePriceSixtyFourPointThreeNineMember
1491 Exercise Price of Euro 68.33 [member] Member dbvt:ExercisePriceSixtyEightPointThreeThreeMember
1492 Exercise Price of Euro 69.75 [member] Member dbvt:ExercisePriceSixtyNinePointSevenFiveMember
1493 Exercise price of Euro 66.35 [member] Member dbvt:ExercisePriceSixtySixPointThreeFiveMember
1494 Exercise price of Euro 66.11 [Member] Member dbvt:ExercisePriceSixtySixPointOneOneMember
1495 Exercise price of Euro 66.25 [Member] Member dbvt:ExercisePriceSixtySixPointTwoFiveMember
1496 Exercise price of Euro 60.77 [Member] Member dbvt:ExercisePriceSixtyPointSevenSevenMember
1497 Exercise price of Euro 59.05 [Member] Member dbvt:ExercisePriceFiftyNinePointZeroFiveMember
1498 Exercise price of Euro 60.54 [Member] Member dbvt:ExercisePriceSixtyPointFiveFourMember
1499 Exercise price of Euro 71.61 [member] Member dbvt:ExercisePriceSeventyOnePointSixOneMember
1500 Exercise price of Euro 74.22 [member] Member dbvt:ExercisePriceSeventyFourPointTwoTwoMember
1501 Exercise price of Euro 39.00 [member] Member dbvt:ExercisePriceThirtyNinePointZeroZeroMember
1502 Exercise price of Euro 38.18 [member] Member dbvt:ExercisePriceThirtyEightPointOneEightMember
1503 Exercise price forty three point six zero [member] Member dbvt:ExercisePriceFortyThreePointSixZeroMember
1504 Exercise price thirty eight point six four [member] Member dbvt:ExercisePriceThirtyEightPointSixFourMember
1505 Exercise price forty point eighty four [member] Member dbvt:ExercisePriceFortyPointEightyFourMember
1506 Exercise price thirty eight point nine two [member] Member dbvt:ExercisePriceThirtyEightPointNineTwoMember
1507 Exercise price thirty seven point two two [member] Member dbvt:ExercisePriceThirtySevenPointTwoTwoMember
1508 Exercise price thirty three point eight one [member] Member dbvt:ExercisePriceThirtyThreePointEightOneMember
1509 Exercise price thirty two point nine zero [member] Member dbvt:ExercisePriceThirtyTwoPointNineZeroMember
1510 Exercise price thirty six point nine six [member] Member dbvt:ExercisePriceThirtySixPointNineSixMember
1511 Exercise price forty point nine four [member] Member dbvt:ExercisePriceFortyPointNineFourMember
1512 Exercise price thirty seven point two eight [member] Member dbvt:ExercisePriceThirtySevenPointTwoEightMember
1513 Exercise price thirty two point five seven [member] Member dbvt:ExercisePriceThirtyTwoPointFiveSevenMember
1514 Exercise price thirty point zero two [member] Member dbvt:ExercisePriceThirtyPointZeroTwoMember
1515 Exercise price twenty seven point nine six [member] Member dbvt:ExercisePriceTwentySevenPointNineSixMember
1516 Exercise price thirty seven point two four [member] Member dbvt:ExercisePriceThirtySevenPointTwoFourMember
1517 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
1518 Outstanding Concept (Decimal) As Of ifrs-full:NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
1519 Exercisable Concept (Decimal) As Of ifrs-full:NumberOfOtherEquityInstrumentsExercisableInSharebasedPaymentArrangement
1520 Exercise price, outstanding Concept (Monetary) As Of ifrs-full:WeightedAverageExercisePriceOfShareOptionsOutstandingInSharebasedPaymentArrangement
1521 Exercise price, Exercisable Concept (Monetary) As Of ifrs-full:WeightedAverageExercisePriceOfShareOptionsExercisableInSharebasedPaymentArrangement
1522 1115 - Disclosure - Disclosure - Share-Based Payments - Summary of Details of Share Based Payment Arrangement Free Shares (Detail) Network

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 http://www.dbv-technologies.com/taxonomy/role/DisclosureDisclosureShareBasedPaymentsSummaryOfDetailsOfShareBasedPaymentArrangementFreeShares
1523 Disclosure of terms and conditions of share-based payment arrangement [table] Table

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*

 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
1524 Creation date [axis] Axis ifrs-full:CreationDateAxis
1525 Default financial statements date [member] Member ifrs-full:DefaultFinancialStatementsDateMember
1526 Date of Grant 4/2/2012 [member] Member dbvt:GrantDateFiftyFourMember
1527 Date of Grant 7/25/2012 [member] Member dbvt:GrantDateFiftyFiveMember
1528 Date of Grant 11/28/2015 [Member] Member dbvt:GrantDateFiftySixMember
1529 Date of Grant 07/25/2013 & 09/12/2013 [Member] Member dbvt:GrantDateFiftyThreeMember
1530 Date of Grant 6/3/2014 [member] Member dbvt:GrantDateFiveMember
1531 Grant Date 4/6/2016 [member] Member dbvt:GrantDateFortySixMember
1532 Date of Grant 06/21/2016 [member] Member dbvt:GrantDateNineMember
1533 Grant Date 8/16/2016 [member] Member dbvt:GrantDateFortyFiveMember
1534 Grant Date 9/1/2016 [member] Member dbvt:GrantDateFortySevenMember
1535 Grant Date 10/27/2016 [member] Member dbvt:GrantDateFortyEightMember
1536 Date of Grant 12/9/2016 [member] Member dbvt:GrantDateTenMember
1537 Grant Date 3/14/2017 [member] Member dbvt:GrantDateSixtyOneMember
1538 Grant Date 4/20/2017 [member] Member dbvt:GrantDateSixtyTwoMember
1539 Grant Date 6/22/2018 [member] Member dbvt:GrantDateThirtyOneMember
1540 Grant Date 6/9/2018 [member] Member dbvt:GrantDateThirtyFourMember
1541 Grant Date 1/11/2018 [member] Member dbvt:GrantDateFiftyEightMember
1542 Grant Date 12/12/2018 [member] Member dbvt:GrantDateThirtyThreeMember
1543 Grant Date 12/17/2018 and 12/12/2018 [member] Member dbvt:GrantDateFiftyNineMember
1544 Date of Grant 9/30/2015 [member] Member dbvt:GrantDateFiftySevenMember
1545 Date of Grant 11/19/2015 [member] Member dbvt:GrantDateSevenMember
1546 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
1547 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
1548 Free Share [member] Member dbvt:FreeShareMember
1549 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
1550 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
1551 Board of Director [member] Member dbvt:BoardOfDirectorMember
1552 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
1553 Vesting period (years) Concept (xbrli:durationItemType) For Period dbvt:ShareBasedPaymentArrangementVestingPeriod
1554 Number of options granted Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsGrantedInSharebasedPaymentArrangement
1555 Share entitlement per free share Concept (Share) For Period dbvt:ShareBasedPaymentArrangementShareEntitlementPerShareOptionGranted
1556 Grant date share fair value Concept (Monetary) As Of Credit ifrs-full:WeightedAverageFairValueAtMeasurementDateShareOptionsGranted
1557 Expected dividends Concept (Percent) For Period ifrs-full:ExpectedDividendAsPercentageShareOptionsGranted
1558 Performance conditions Concept (Text/String) For Period dbvt:ShareBasedPaymentArrangementPerformanceConditions
1559 Expected turnover during the vesting period Concept (Percent) For Period dbvt:SharebasedPaymentArrangementVestingRightsPercentage
1560 Number of free shares granted Concept (Decimal) For Period ifrs-full:NumberOfInstrumentsOtherEquityInstrumentsGranted
1561 Share entitlement per free share Concept (Share) For Period dbvt:ShareBasedPaymentArrangementShareEntitlementPerNonOptionGranted
1562 Grant date share fair value Concept (Share) For Period dbvt:WeightedAverageSharePriceOtherEquityInstrumentsGranted
1563 Expected dividends Concept (Percent) For Period dbvt:ExpectedDividendAsPercentageOtherEquityInstrumentsGranted
1564 Expected turnover during the vesting period Concept (Percent) For Period dbvt:ExpectedTurnoverDuringTheVestingPeriod
1565 Lockup period Concept (xbrli:durationItemType) For Period dbvt:ShareBasedPaymentArrangementLockupPeriod
1566 1116 - Disclosure - Disclosure - Share-Based Payments - Summary of Details of Share Based Payment Arrangement Free Shares (Parenthetical) (Detail) Network

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 http://www.dbv-technologies.com/taxonomy/role/DisclosureDisclosureShareBasedPaymentsSummaryOfDetailsOfShareBasedPaymentArrangementFreeSharesParenthetical
1567 Disclosure of terms and conditions of share-based payment arrangement [table] Table

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*

 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
1568 Creation date [axis] Axis ifrs-full:CreationDateAxis
1569 Default financial statements date [member] Member ifrs-full:DefaultFinancialStatementsDateMember
1570 Grant Date One And Two [member] Member dbvt:GrantDateOneAndTwoMember
1571 Grant date eight, nine, ten and eleven [member] Member dbvt:GrantDateEightNineTenAndElevenMember
1572 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
1573 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
1574 Free Share [member] Member dbvt:FreeShareMember
1575 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
1576 Acquisition of free shares upon achievement of performance criteria, description Concept (Text/String) For Period ifrs-full:DescriptionOfWhenEntityTypicallySatisfiesPerformanceObligations
1577 1118 - Disclosure - Share-Based Payments - Summary of Details of Free Shares (Parenthetical) (Detail) Network

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 http://www.dbv-technologies.com/taxonomy/role/DisclosureShareBasedPaymentsSummaryOfDetailsOfFreeSharesParenthetical
1578 Disclosure of terms and conditions of share-based payment arrangement [table] Table

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 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
1579 Creation date [axis] Axis ifrs-full:CreationDateAxis
1580 Default financial statements date [member] Member ifrs-full:DefaultFinancialStatementsDateMember
1581 Date of Grant 07/25/2013 & 09/12/2013 [Member] Member dbvt:GrantDateFiftyThreeMember
1582 Date of Grant 6/3/2014 [member] Member dbvt:GrantDateFiveMember
1583 Date of Grant 9/30/2015 and 12/15/2015 [member] Member dbvt:GrantDateSixtyMember
1584 Grant date twelve and thirteen [member] Member dbvt:GrantDateTwelveAndThirteenMember
1585 Grant Date Fourteen And Fifteen [member] Member dbvt:GrantDateFourteenAndFifteenMember
1586 Grant Date One And Two [member] Member dbvt:GrantDateOneAndTwoMember
1587 Grant date eight, nine, ten and eleven [member] Member dbvt:GrantDateEightNineTenAndElevenMember
1588 Products and services [axis] Axis ifrs-full:ProductsAndServicesAxis
1589 Products and services [member] Member ifrs-full:ProductsAndServicesMember
1590 Inclusion Of 100th Patient In VIPES Phase II Study [member] Member dbvt:InclusionOf100thPatientInVIPESPhaseIIStudyMember
1591 Achievement Of Principal Evaluation Criterion In VIPES Phase II Study [Member] Member dbvt:AchievementOfPrincipalEvaluationCriterionInVIPESPhaseIIStudyMember
1592 Adoption Of 2013 Free Share Allocation Plan [member] Member dbvt:AdoptionOfTwoThousandThirteenFreeShareAllocationPlanMember
1593 Inclusion Of First Patient In Viaskin Milk Phase II Study [member] Member dbvt:InclusionOfFirstPatientInViaskinMilkPhaseIIStudyMember
1594 On achievement of phase three Pepites trial for Viaskin Peanut [Member] Member dbvt:OnAchievementOfPhaseThreePepitesTrialForViaskinPeanutMember
1595 Viaskin Peanut [Member] Member dbvt:PhaseIIITrialOfViaskinPeanutMember
1596 Phase I I I Pepites Trial For Viaskin Peanut [member] Member dbvt:PhaseIIIPepitesTrialForViaskinPeanutMember
1597 Viaskin Peanut [member] Member dbvt:ViaskinPeanutMember
1598 Phase II Miles Trial For Viaskin Milk [member] Member dbvt:PhaseIIMilesTrialForViaskinMilkMember
1599 Viaskin Platform [member] Member dbvt:ViaskinPlatformMember
1600 Viaskin Milk [member] Member dbvt:ViaskinMilkMember
1601 Range [axis] Axis ifrs-full:RangeAxis
1602 Ranges [member] Member ifrs-full:RangesMember
1603 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
1604 Top of range [member] Member ifrs-full:TopOfRangeMember
1605 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
1606 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
1607 Free Share [member] Member dbvt:FreeShareMember
1608 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
1609 Acquisition of shares on achievement of performance criteria Concept (Text/String) For Period dbvt:ProporationOfSharesThatCouldBeAcquiredInBusinessCombinationDescription
1610 Vesting period (years) Concept (xbrli:durationItemType) For Period dbvt:ShareBasedPaymentArrangementVestingPeriod
1611 Acquisition of free shares upon achievement of performance criteria, description Concept (Text/String) For Period ifrs-full:DescriptionOfWhenEntityTypicallySatisfiesPerformanceObligations
1612 Percentage increase in share price Concept (Percent) For Period dbvt:PercentageIncreaseInSharePrice
1613 Number of consecutive days Concept (Integer) For Period dbvt:NumberOfConsecutiveDays
1614 Age of patients evaluated Concept (xbrli:durationItemType) For Period dbvt:AgeOfPatientsEvaluated
1615 Acquisition of shares on achievement of performance criteria Concept (Shares) As Of dbvt:NumberOfSharesAcquiredInBusinessCombination
1616 1119 - Disclosure - Share-Based Payments - Change in Number of Free Shares Outstanding (Detail) Network

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 http://www.dbv-technologies.com/taxonomy/role/DisclosureShareBasedPaymentsChangeInNumberOfFreeSharesOutstanding
1617 Changes In Number Of Shares Outstanding [table] Table

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 dbvt:ChangesInNumberOfSharesOutstandingTable
1618 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
1619 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
1620 Free Share [member] Member dbvt:FreeShareMember
1621 Changes In Number Of Shares Outstanding [line items] LineItems dbvt:ChangesInNumberOfSharesOutstandingLineItems
1622 Balance at beginning of period Concept (Decimal) As Of ifrs-full:NumberOfOutstandingShareOptions
1623 Granted during the period Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsGrantedInSharebasedPaymentArrangement
1624 Forfeited during the period Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsForfeitedInSharebasedPaymentArrangement
1625 Exercised during the period Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsExercisedInSharebasedPaymentArrangement
1626 Expired during the period Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsExpiredInSharebasedPaymentArrangement
1627 Balance at end of period Concept (Decimal) As Of ifrs-full:NumberOfOutstandingShareOptions
1628 1120 - Disclosure - Financial Revenue and Expenses - Summary of Financial Income and Expenses (Detail) Network

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 http://www.dbv-technologies.com/taxonomy/role/DisclosureFinancialRevenueAndExpensesSummaryOfFinancialIncomeAndExpenses
1629 Disclosure Of Detail Information About Financial Income And Expenses [table] Table

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 dbvt:DisclosureOfDetailInformationAboutFinancialIncomeAndExpensesTable
1630 Statement scenario [axis] Axis dbvt:StatementScenarioAxis
1631 Statement scenario [member] Member dbvt:StatementScenarioMember
1632 Scenario, Previously Reported [member] Member srt:ScenarioPreviouslyReportedMember
1633 Disclosure Of Detail Information About Financial Income And Expenses [line items] LineItems dbvt:DisclosureOfDetailInformationAboutFinancialIncomeAndExpensesLineItems
1634 Financial revenues Concept (Monetary) For Period Credit ifrs-full:FinanceIncome
1635 Financial expenses Concept (Monetary) For Period Debit ifrs-full:FinanceCosts
1636 Total Concept (Monetary) For Period Credit ifrs-full:FinanceIncomeCost
1637 1121 - Disclosure - Income Tax Expense - Additional Information (Detail) Network

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 http://www.dbv-technologies.com/taxonomy/role/DisclosureIncomeTaxExpenseAdditionalInformation
1638 Disclosure Of Reconciliation Of Effective And Applicable Income Tax Expenses [table] Table

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*

 dbvt:DisclosureOfReconciliationOfEffectiveAndApplicableIncomeTaxExpensesTable
1639 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
1640 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
1641 French (Member) Member country:FR
1642 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
1643 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
1644 Parent [member] Member ifrs-full:ParentMember
1645 Disclosure of reconciliation of effective and applicable income tax expenses [line items] LineItems dbvt:DisclosureOfReconciliationOfEffectiveAndApplicableIncomeTaxExpensesLineItems
1646 Effective income tax rate Concept (Percent) For Period dbvt:EffectiveIncomeTaxRate
1647 Deferred tax assets Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssets
1648 Amount of losses carried forward Concept (Monetary) For Period Debit dbvt:IncomeTaxExpenseBenefitRecognisedInProfitLossTaxLossesCarryforwards
1649 1122 - Disclosure - Income Tax Expense - Summary of Reconciliation of Effective and Nominal Tax Expense (Detail) Network

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 http://www.dbv-technologies.com/taxonomy/role/DisclosureIncomeTaxExpenseSummaryOfReconciliationOfEffectiveAndNominalTaxExpense
1650 Implied Table Table

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*

 implied:Table
1651 Major components of tax expense (income) [abstract] Abstract ifrs-full:MajorComponentsOfTaxExpenseIncomeAbstract
1652 (Loss) before taxes Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
1653 Theoretical group tax rate Concept (Percent) For Period ifrs-full:ApplicableTaxRate
1654 Nominal tax expense Concept (Monetary) For Period Debit ifrs-full:TaxExpenseIncomeAtApplicableTaxRate
1655 Permanent differences Concept (Monetary) For Period Credit dbvt:IncreaseDecreaseInTaxBenefitArisingFromPermanentDifferences
1656 Research tax credit Concept (Monetary) For Period Credit dbvt:IncreaseDecreaseInTaxEffectArisingFromResearchTaxCredits
1657 Share-based compensation Concept (Monetary) For Period Debit dbvt:IncreaseDecreaseTaxBenefitArisingFromShareBasedCompensationExpense
1658 Non recognition of deferred tax assets related to tax losses and temporary differences Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDeferredTaxExpense
1659 Other differences Concept (Monetary) For Period Debit ifrs-full:OtherTaxEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome
1660 Effective tax expenses Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
1661 Effective tax rate Concept (Percent) For Period ifrs-full:AverageEffectiveTaxRate
1662 1123 - Disclosure - Commitments - Additional Information (Detail) Network

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 http://www.dbv-technologies.com/taxonomy/role/DisclosureCommitmentsAdditionalInformation
1663 Disclosure Of Commitments [table] Table

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 dbvt:DisclosureOfCommitmentsTable
1664 Credit Facility 1 [axis] Axis dbvt:CreditFacility1Axis
1665 Credit Facility 1 [domain] Member dbvt:CreditFacility1Domain
1666 Facility [member] Member dbvt:FacilityMember
1667 Second Facility [member] Member dbvt:SecondFacilityMember
1668 Commercial Facility [member] Member dbvt:CommercialFacilityMember
1669 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
1670 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
1671 North america [member] Member srt:NorthAmericaMember
1672 Bagneux [member] Member dbvt:BagneuxMember
1673 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
1674 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
1675 Office equipment and vehicles [member] Member dbvt:OfficeEquipmentAndVehiclesMember
1676 Maturity [axis] Axis ifrs-full:MaturityAxis
1677 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1678 Not later than one year [member] Member ifrs-full:NotLaterThanOneYearMember
1679 Later Than One Year and Not Later Than Two Years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
1680 Later Than Two Years and Not Later Than Three Years [member] Member ifrs-full:LaterThanTwoYearsAndNotLaterThanThreeYearsMember
1681 Property, plant and equipment by operating lease status [axis] Axis ifrs-full:PropertyPlantAndEquipmentByOperatingLeaseStatusAxis
1682 Property, plant and equipment by operating lease status [member] Member ifrs-full:PropertyPlantAndEquipmentByOperatingLeaseStatusMember
1683 Property, plant and equipment subject to operating leases [member] Member ifrs-full:PropertyPlantAndEquipmentSubjectToOperatingLeasesMember
1684 Investment type [axis] Axis dbvt:InvestmentTypeAxis
1685 Investment type [member] Member dbvt:InvestmentTypeMember
1686 Monetary market fund [member] Member dbvt:MonetaryMarketFundMember
1687 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
1688 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
1689 Letter of credit 1 [member] Member dbvt:LetterOfCredit1Member
1690 CIC banking institution [member] Member dbvt:CICBankingInstitutionMember
1691 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
1692 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
1693 Rental agreements [member] Member dbvt:RentalAgreementsMember
1694 Other agreements [member] Member dbvt:OtherAgreementsMember
1695 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1696 Carrying amount [member] Member ifrs-full:CarryingAmountMember
1697 Contract Research Organizations [member] Member dbvt:ContractResearchOrganizationsMember
1698 Range [axis] Axis ifrs-full:RangeAxis
1699 Ranges [member] Member ifrs-full:RangesMember
1700 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
1701 Top of range [member] Member ifrs-full:TopOfRangeMember
1702 Products and services [axis] Axis ifrs-full:ProductsAndServicesAxis
1703 Products and services [member] Member ifrs-full:ProductsAndServicesMember
1704 Viaskin Peanuts And Viaskin Milk Products [member] Member dbvt:ViaskinPeanutsAndViaskinMilkProductsMember
1705 Disclosure of commitments [line items] LineItems dbvt:DisclosureOfCommitmentsLineItems
1706 Office and laboratory space Concept (num:areaItemType) For Period dbvt:AreaOfOfficeAndLaboratorySpace
1707 Number of facilities Concept (Integer) As Of dbvt:NumberOfFacilities
1708 Lease agreement date Concept (Date) For Period dbvt:LeaseAgreementDate
1709 Leases expires period Concept (Text/String) For Period dbvt:LeasesExpirationPeriod
1710 Area of office and laboratory space Concept (num:areaItemType) For Period dbvt:AreaOfSubleaseOfficeAndLaboratorySpace
1711 Subleases expiration period Concept (Date) For Period dbvt:SubleasesExpirationPeriod
1712 Additional initial Period of sublease Concept (xbrli:durationItemType) For Period dbvt:AdditionalInitialPeriodOfSublease
1713 Lease commenced period Concept (Text/String) For Period dbvt:LeaseCommencedPeriod
1714 Lease extension period Concept (xbrli:durationItemType) For Period dbvt:LeaseExtensionPeriod
1715 Future rental payments Concept (Monetary) As Of Credit ifrs-full:MinimumLeasePaymentsPayableUnderNoncancellableOperatingLease
1716 Guarantee for ordinary rental agreements of the premises Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseInExposureToCreditRiskOnLoanCommitmentsAndFinancialGuaranteeContracts
1717 Sum of term deposit Concept (Monetary) For Period Credit dbvt:TermDeposit
1718 Term deposit period Concept (xbrli:durationItemType) For Period dbvt:TermDepositPeriod
1719 Maximum collateral foreign exchange pledged security Concept (Monetary) As Of Credit dbvt:MaximumCollateralForeignExchangePledgedSecurity
1720 Launching value of clinical studies Concept (Monetary) For Period Credit dbvt:LaunchingValueOfClinicalStudies
1721 Remaining value of clinical studies Concept (Monetary) For Period Debit dbvt:RemainingValueOfClinicalStudies
1722 1124 - Disclosure - Commitments - Schedule of Future Rents and Charges (Detail) Network

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*

 http://www.dbv-technologies.com/taxonomy/role/DisclosureCommitmentsScheduleOfFutureRentsAndCharges
1723 Disclosure of finance lease and operating lease by lessee [table] Table

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*

 ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeTable
1724 Maturity [axis] Axis ifrs-full:MaturityAxis
1725 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1726 Not later than one year [member] Member ifrs-full:NotLaterThanOneYearMember
1727 Later Than One Year and Not Later Than Two Years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
1728 Later Than Two Years and Not Later Than Three Years [member] Member ifrs-full:LaterThanTwoYearsAndNotLaterThanThreeYearsMember
1729 Later Than Three Years and Not Later Than Four Years [member] Member ifrs-full:LaterThanThreeYearsAndNotLaterThanFourYearsMember
1730 Later Than Four Years and Not Later Than Five Years [member] Member ifrs-full:LaterThanFourYearsAndNotLaterThanFiveYearsMember
1731 Later than five years and not later than six years [member] Member dbvt:LaterThanFiveYearsAndNotLaterThanSixYearsMember
1732 Later than six years and not later than seven years [member] Member dbvt:LaterThanSixYearsAndNotLaterThanSevenYearsMember
1733 Later than seven years and not later than eight years [member] Member dbvt:LaterThanSevenYearsAndNotLaterThanEightYearsMember
1734 Later than eight years and not later than nine years [member] Member dbvt:LaterThanEightYearsAndNotLaterThanNineYearsMember
1735 Later than nine years and not later than ten years [member] Member dbvt:LaterThanNineYearsAndNotLaterThanTenYearsMember
1736 Later than ten years [member] Member ifrs-full:LaterThanTenYearsMember
1737 Disclosure of finance lease and operating lease by lessee [line items] LineItems ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeLineItems
1738 Amount of future rents and charges Concept (Monetary) As Of Credit ifrs-full:MinimumLeasePaymentsPayableUnderNoncancellableOperatingLease
1739 1125 - Disclosure - Relationships with Related Parties - Additional Information (Detail) Network

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 http://www.dbv-technologies.com/taxonomy/role/DisclosureRelationshipsWithRelatedPartiesAdditionalInformation
1740 Disclosure of transactions between related parties [table] Table

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 ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesTable
1741 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
1742 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
1743 Commercial strategy consulting works [member] Member dbvt:CommercialStrategyConsultingWorksMember
1744 Disclosure of transactions between related parties [line items] LineItems ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
1745 Compensation awarded to corporate officers and executive committee Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensation
1746 Payment of severance Concept (Monetary) As Of Credit dbvt:PaymentOfSeveranceToEmployees
1747 Commercial deployment expense Concept (Monetary) For Period Debit dbvt:CommercialDeploymentExpense
1748 1126 - Disclosure - Relationships with Related Parties - Summary of Relationships with Related Parties (Detail) Network

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 http://www.dbv-technologies.com/taxonomy/role/DisclosureRelationshipsWithRelatedPartiesSummaryOfRelationshipsWithRelatedParties
1749 Disclosure of transactions between related parties [table] Table

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 ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesTable
1750 Title of individual 1 [axis] Axis dbvt:TitleOfIndividual1Axis
1751 Government Grants [domain] Member dbvt:GovernmentGrantsDomain
1752 Corporate Officers [member] Member dbvt:CorporateOfficersMember
1753 Members of the Board of Directors [member] Member dbvt:BoardOfDirectorsMember
1754 Directors Fees [member] Member dbvt:DirectorsFeesMember
1755 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
1756 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
1757 Executive Committee [member] Member dbvt:ExecutiveCommitteeMember
1758 Disclosure of transactions between related parties [line items] LineItems ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
1759 Related party compensation Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensation
1760 Share-based payments to members of the Board of Directors Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationSharebasedPayment
1761 1127 - Disclosure - Relationships with Related Parties - Schedule of Amounts Payable to Related Parties (Detail) Network

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 http://www.dbv-technologies.com/taxonomy/role/DisclosureRelationshipsWithRelatedPartiesScheduleOfAmountsPayableToRelatedParties
1762 Disclosure of amount payables to related parties [table] Table

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 dbvt:DisclosureOfAmountPayablesToRelatedPartiesTable
1763 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
1764 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
1765 Compensation [member] Member dbvt:CompensationToRelatedPartyMember
1766 Pension obligation [member] Member dbvt:PensionObligationMember
1767 Title of individual 1 [axis] Axis dbvt:TitleOfIndividual1Axis
1768 Government Grants [domain] Member dbvt:GovernmentGrantsDomain
1769 Directors Fees [member] Member dbvt:DirectorsFeesMember
1770 Disclosure of amount payables to related parties [line items] LineItems dbvt:DisclosureOfAmountPayablesToRelatedPartiesLineItems
1771 Amounts Payable Concept (Monetary) As Of Credit ifrs-full:AmountsPayableRelatedPartyTransactions
1772 1128 - Disclosure - Earnings Per Share - Additional Information (Detail) Network

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 http://www.dbv-technologies.com/taxonomy/role/DisclosureEarningsPerShareAdditionalInformation
1773 Earnings per share [table] Table

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 ifrs-full:EarningsPerShareTable
1774 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
1775 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
1776 Common Shares [member] Member ifrs-full:OrdinarySharesMember
1777 Earnings per share [line items] LineItems ifrs-full:EarningsPerShareLineItems
1778 Weighted average number of shares outstanding Concept (Shares) For Period ifrs-full:WeightedAverageShares
1779 Description of types of warranties Concept (Text/String) For Period ifrs-full:DescriptionOfTypesOfWarrantiesAndRelatedObligations
1780 Anti-dilutive instruments Concept (Shares) For Period dbvt:AntidilutiveSharesOfInstrumentsWithPotentialFutureDilutiveEffectNotIncludedInCalculationOfDilutedEarningsShares
1781 1129 - Disclosure - Earnings Per Share - Summary of Earnings Per Share (Detail) Network

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 http://www.dbv-technologies.com/taxonomy/role/DisclosureEarningsPerShareSummaryOfEarningsPerShare
1782 Implied Table Table

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 implied:Table
1783 Earnings per share [abstract] Abstract ifrs-full:EarningsPerShareAbstract
1784 Net income of the reporting period Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromContinuingOperations
1785 Adjusted weighted average number of outstanding shares Concept (Shares) For Period ifrs-full:AdjustedWeightedAverageShares
1786 Basic / Diluted earnings per share (€/share) Concept (Share) For Period ifrs-full:BasicAndDilutedEarningsLossPerShareFromContinuingOperations
1787 1130 - Disclosure - Management of Financial Risks - Additional Information (Detail) Network

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 http://www.dbv-technologies.com/taxonomy/role/DisclosureManagementOfFinancialRisksAdditionalInformation
1788 Disclosure Of Financial Risk Management [table] Table

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 dbvt:DisclosureOfFinancialRiskManagementTable
1789 Range [axis] Axis ifrs-full:RangeAxis
1790 Ranges [member] Member ifrs-full:RangesMember
1791 Top of range [member] Member ifrs-full:TopOfRangeMember
1792 Disclosure Of Financial Risk Management [line items] LineItems dbvt:DisclosureOfFinancialRiskManagementLineItems
1793 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
1794 Operating losses and cash out flows from operation Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromContinuingOperations
1795 Accumulated deficit and reserves Concept (Monetary) As Of Credit ifrs-full:RetainedEarnings
1796 Net cash used in operating activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperatingActivities
1797 Percentage of purchases and other external expenses made in U.S. dollars Concept (Percent) For Period dbvt:PercentageOfPurchasesAndOtherExternalExpensesMadeInUsDollars
1798 1131 - Disclosure - Events After the Close of the Fiscal Year - Additional Information (Detail) Network

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 http://www.dbv-technologies.com/taxonomy/role/DisclosureEventsAfterTheCloseOfTheFiscalYearAdditionalInformation
1799 Disclosure of non-adjusting events after reporting period [table] Table

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 ifrs-full:DisclosureOfNonadjustingEventsAfterReportingPeriodTable
1800 Range [axis] Axis ifrs-full:RangeAxis
1801 Ranges [member] Member ifrs-full:RangesMember
1802 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
1803 Top of range [member] Member ifrs-full:TopOfRangeMember
1804 Non-adjusting events after reporting period [axis] Axis ifrs-full:NonadjustingEventsAfterReportingPeriodAxis
1805 Non-adjusting events after reporting period [member] Member ifrs-full:NonadjustingEventsMember
1806 Events after reporting period [member] Member dbvt:EventsAfterReportingPeriodMember
1807 Disclosure of non-adjusting events after reporting period [line items] LineItems ifrs-full:DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems
1808 Peanut allergy treatment covering age as per BLA Concept (Integer) For Period dbvt:PeanutAllergyTreatmentCoveringAge
1809 Number of Board of directors Concept (Integer) For Period dbvt:NumberOfBoardOfDirectors

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