XML 117 R77.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Supplier Accounts Receivable and Other Current Liabilities - Additional Information (Detail) | 12 Months Ended
--- | ---
Dec. 31, 2017 EUR (€)
Disclosure Of Supplier Accounts And Other Current Liabilities [Abstract] |
Supplier accounts payable and related payables | € 0
Supplier accounts and related payables term | 1 year

X
- Definition Disclosure of supplier accounts and other current liabilities. + References No definition available. + Details
Name: | dbvt_DisclosureOfSupplierAccountsAndOtherCurrentLiabilitiesAbstract
Namespace Prefix: | dbvt_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Supplier accounts and related payables term. + References No definition available. + Details
Name: | dbvt_SupplierAccountsAndRelatedPayablesTerm
Namespace Prefix: | dbvt_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Supplier accounts payable and related payables. + References No definition available. + Details
Name: | dbvt_SupplierAccountsPayableAndRelatedPayables
Namespace Prefix: | dbvt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant