Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

Document and Entity Information - shares
9 Months Ended
Aug. 31, 2019
Oct. 13, 2019
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Aug. 31, 2019  
Entity Registrant Name Security Devices International Inc.  
Entity Central Index Key 0001354866  
Current Fiscal Year End Date --11-30  
Entity Filer Category Non-accelerated Filer  
Entity Common Stock, Shares Outstanding   104,177,837
Entity Current Reporting Status Yes  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q3  
Entity Small Business true  
Entity Emerging Growth Company false  
Entity Ex Transition Period false  
Entity Interactive Data Current Yes  
Entity File Number 333-132456  
Entity Tax Identification Number 71-1050654  
Entity Address, Address Line One 107 Audubon Road, Bldg 2, Suite 201  
Entity Address, City or Town Wakefield  
Entity Address, State or Province MA  
Entity Address, Postal Zip Code 01880  
City Area Code 978  
Local Phone Number 868-5011  
Document Quarterly Report true  
Document Transition Report false  
Entity Incorporation, State or Country Code DE  
Entity Shell Company false  
Trading Symbol SDZ.CN  
Title of 12(b) Security Common Stock, par value $0.001 per share  
OTHER OTC [Member]    
Trading Symbol SDEV  
Title of 12(b) Security Common Stock, par value $0.001 per share