Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

Document and Entity Information - USD ($)
12 Months Ended
Aug. 31, 2020
Oct. 14, 2020
Feb. 29, 2020
Document and Entity Information [Abstract]      
Entity Registrant Name Lexaria Bioscience Corp.    
Entity Central Index Key 0001348362    
Current Fiscal Year End Date --08-31    
Entity Filer Category Non-accelerated Filer    
Entity Common Stock, Shares Outstanding   90,044,312  
Entity Public Float     $ 21,566,496
Document Type 10-K    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Document Period End Date Aug. 31, 2020    
Amendment Flag false    
Document Fiscal Year Focus 2020    
Document Fiscal Period Focus FY    
Entity Small Business true    
Entity Emerging Growth Company false    
Entity Current Reporting Status Yes    
Entity Shell Company false    
Entity Interactive Data Current Yes