XML 11 R1.htm IDEA: XBRL DOCUMENT v3.21.2
Cover Page - shares
 9 Months Ended
Sep. 30, 2021
Oct. 26, 2021
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Sep. 30, 2021  
Document Fiscal Year Focus 2021  
Document Fiscal Period Focus Q3  
Entity Registrant Name DBV TECHNOLOGIES S.A.  
Entity Central Index Key 0001613780  
Entity File Number 001-36697  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status Yes  
Entity Address, Postal Zip Code 92120  
Entity Filer Category Non-accelerated Filer  
Entity Interactive Data Current Yes  
Entity Common Stock, Shares Outstanding   55,011,687
Document Quarterly Report true  
Document Transition Report false  
Entity Shell Company false  
Entity Emerging Growth Company false  
Entity Address, Country FR  
Entity Small Business true  
Entity Incorporation, State or Country Code I0  
Entity Address, Address Line One 177-181 avenue Pierre Brossolette  
Entity Address, City or Town Montrouge  
City Area Code 33  
Local Phone Number 1 55 42 78 78  
Entity Tax Identification Number 00-0000000  
American Depositary Share [Member]    
Document Information [Line Items]    
Title of 12(b) Security American Depositary Shares, each representing one-half of one ordinary share, nominal value €0.10 per share  
Trading Symbol DBVT  
Security Exchange Name NASDAQ  
Ordinary Shares [Member]    
Document Information [Line Items]    
Title of 12(b) Security Ordinary shares, nominal value €0.10 per share  
No Trading Symbol Flag true  
Security Exchange Name NASDAQ