XML 100 R60.htm IDEA: XBRL DOCUMENT v3.8.0.1

Non-Current Financial Assets - Additional Information (Detail)	Dec. 31, 2017 shares
Disclosure of non financial assets.
Number of shares outstanding	24,990,822
Liquidity contract [member]
Disclosure of non financial assets.
Number of treasury shares	4,939

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- Definition

Disclosure of non financial assets [Line Items]

+ References

No definition available.

+ Details

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Namespace Prefix:	dbvt_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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- Definition

Number of treasury shares.

+ References

No definition available.

+ Details

Name:	dbvt_NumberOfTreasuryShares
Namespace Prefix:	dbvt_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

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- Definition

The number of shares that have been authorised and issued, reduced by treasury shares held. [Refer: Treasury shares]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 79
-Subparagraph a
-Clause iv
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_79_a_iv&doctype=Standard
-URIDate 2017-03-09

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

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- Details

Name:	ifrs-full_ClassesOfFinancialAssetsAxis=dbvt_LiquidityConctractMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: