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Document and Entity Information (USD $)
 12 Months Ended
Sep. 30, 2014
Dec. 15, 2014
Mar. 31, 2014
Document Type 10-K    
Amendment Flag false    
Document Period End Date Sep. 30, 2014    
Trading Symbol avxl    
Entity Registrant Name ANAVEX LIFE SCIENCES CORP.    
Entity Central Index Key 0001314052    
Current Fiscal Year End Date --09-30    
Entity Filer Category Smaller Reporting Company    
Entity Common Stock, Shares Outstanding   54,684,905dei_EntityCommonStockSharesOutstanding  
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Well Known Seasoned Issuer No    
Entity Public Float     $ 14,865,420dei_EntityPublicFloat
Document Fiscal Year Focus 2014    
Document Fiscal Period Focus FY