<?xml version="1.0" encoding="utf-8"?>
<FilingSummary xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <Version>2.4.1.9</Version>
  <ProcessingTime />
  <ReportFormat>Html</ReportFormat>
  <ContextCount>42</ContextCount>
  <ElementCount>918</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>6</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>8</UnitCount>
  <MyReports>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>101 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/DocumentAndEntityInformation</Role>
      <ShortName>Document and Entity Information</ShortName>
    </Report>
    <Report>
      <IsDefault>true</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>102 - Statement - INTERIM CONDENSED CONSOLIDATED BALANCE SHEETS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/BalanceSheet</Role>
      <ShortName>INTERIM CONDENSED CONSOLIDATED BALANCE SHEETS</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>103 - Statement - INTERIM CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/BalanceSheetParenthetical</Role>
      <ShortName>INTERIM CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>104 - Statement - INTERIM CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/IncomeStatement</Role>
      <ShortName>INTERIM CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>105 - Statement - INTERIM CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/CashFlows</Role>
      <ShortName>INTERIM CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>106 - Statement - INTERIM CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/StockholdersEquity</Role>
      <ShortName>INTERIM CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>107 - Disclosure - Business Description and Basis of Presentation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/NotesToFinancialStatementsOrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock</Role>
      <ShortName>Business Description and Basis of Presentation</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>108 - Disclosure - Recent Accounting Pronouncements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/NotesToFinancialStatementsScheduleOfNewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock</Role>
      <ShortName>Recent Accounting Pronouncements</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>109 - Disclosure - Summary of Significant Accounting Policies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/NotesToFinancialStatementsSignificantAccountingPoliciesTextBlock</Role>
      <ShortName>Summary of Significant Accounting Policies</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>110 - Disclosure - Equipment</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/NotesToFinancialStatementsPropertyPlantAndEquipmentDisclosureTextBlock</Role>
      <ShortName>Equipment</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>111 - Disclosure - Promissory Notes Payable</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/NotesToFinancialStatementsDebtDisclosureTextBlock</Role>
      <ShortName>Promissory Notes Payable</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>112 - Disclosure - Non-interest Bearing Liabilities</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/NotesToFinancialStatementsConvertibleDebtTextBlock</Role>
      <ShortName>Non-interest Bearing Liabilities</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>113 - Disclosure - Capital Stock</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/NotesToFinancialStatementsStockholdersEquityNoteDisclosureTextBlock</Role>
      <ShortName>Capital Stock</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>114 - Disclosure - Lincoln Park Purchase Agreement</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/NotesToFinancialStatementsEquityLineOfCreditTextBlock</Role>
      <ShortName>Lincoln Park Purchase Agreement</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>115 - Disclosure - Related Party Transactions</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/NotesToFinancialStatementsRelatedPartyTransactionsDisclosureTextBlock</Role>
      <ShortName>Related Party Transactions</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>116 - Disclosure - Commitments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/NotesToFinancialStatementsCommitmentsDisclosureTextBlock</Role>
      <ShortName>Commitments</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>117 - Disclosure - Subsequent Events</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/NotesToFinancialStatementsSubsequentEventsTextBlock</Role>
      <ShortName>Subsequent Events</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>118 - Disclosure - Income Taxes</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/NotesToFinancialStatementsIncomeTaxDisclosureTextBlock</Role>
      <ShortName>Income Taxes</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>119 - Disclosure - Supplemental Cash Flow Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/NotesToFinancialStatementsCashFlowSupplementalDisclosuresTextBlock</Role>
      <ShortName>Supplemental Cash Flow Information</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>121 - Disclosure - Summary of Significant Accounting Policies (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/NotesToFinancialStatementsSignificantAccountingPoliciesTextBlockPolicies</Role>
      <ShortName>Summary of Significant Accounting Policies (Policies)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>122 - Disclosure - Summary of Significant Accounting Policies (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/NotesToFinancialStatementsSignificantAccountingPoliciesTextBlockTables</Role>
      <ShortName>Summary of Significant Accounting Policies (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>123 - Disclosure - Equipment (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/NotesToFinancialStatementsPropertyPlantAndEquipmentDisclosureTextBlockTables</Role>
      <ShortName>Equipment (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>124 - Disclosure - Promissory Notes Payable (Tables)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/NotesToFinancialStatementsDebtDisclosureTextBlockTables</Role>
      <ShortName>Promissory Notes Payable (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>125 - Disclosure - Non-interest Bearing Liabilities (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/NotesToFinancialStatementsConvertibleDebtTextBlockTables</Role>
      <ShortName>Non-interest Bearing Liabilities (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>127 - Disclosure - Commitments (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/NotesToFinancialStatementsCommitmentsDisclosureTextBlockTables</Role>
      <ShortName>Commitments (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>128 - Disclosure - Income Taxes (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/NotesToFinancialStatementsIncomeTaxDisclosureTextBlockTables</Role>
      <ShortName>Income Taxes (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>130 - Disclosure - Business Description and Basis of Presentation (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/DisclosureOrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlockDetails</Role>
      <ShortName>Business Description and Basis of Presentation (Narrative) (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>131 - Disclosure - Summary of Significant Accounting Policies (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/DisclosureSignificantAccountingPoliciesTextBlockDetails</Role>
      <ShortName>Summary of Significant Accounting Policies (Narrative) (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>132 - Disclosure - Promissory Notes Payable (Narrative) (Details)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/DisclosureDebtDisclosureTextBlockDetails</Role>
      <ShortName>Promissory Notes Payable (Narrative) (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>133 - Disclosure - Non-interest Bearing Liabilities (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/DisclosureConvertibleDebtTextBlockDetails</Role>
      <ShortName>Non-interest Bearing Liabilities (Narrative) (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>134 - Disclosure - Capital Stock (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/DisclosureStockholdersEquityNoteDisclosureTextBlockDetails</Role>
      <ShortName>Capital Stock (Narrative) (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>135 - Disclosure - Lincoln Park Purchase Agreement (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/DisclosureEquityLineOfCreditTextBlockDetails</Role>
      <ShortName>Lincoln Park Purchase Agreement (Narrative) (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>136 - Disclosure - Related Party Transactions (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/DisclosureRelatedPartyTransactionsDisclosureTextBlockDetails</Role>
      <ShortName>Related Party Transactions (Narrative) (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>137 - Disclosure - Commitments (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/DisclosureCommitmentsDisclosureTextBlockDetails</Role>
      <ShortName>Commitments (Narrative) (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>138 - Disclosure - Subsequent Events (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/DisclosureSubsequentEventsTextBlockDetails</Role>
      <ShortName>Subsequent Events (Narrative) (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>139 - Disclosure - Income Taxes (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/DisclosureIncomeTaxDisclosureTextBlockDetails</Role>
      <ShortName>Income Taxes (Narrative) (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>140 - Disclosure - Supplemental Cash Flow Information (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/DisclosureCashFlowSupplementalDisclosuresTextBlockDetails</Role>
      <ShortName>Supplemental Cash Flow Information (Narrative) (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>141 - Disclosure - Fair Value, Liabilities Measured on Recurring and Nonrecurring Basis (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/DisclosureFairValueLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTableTextBlockDetails</Role>
      <ShortName>Fair Value, Liabilities Measured on Recurring and Nonrecurring Basis (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>142 - Disclosure - Schedule of Property, Plant and Equipment (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/DisclosurePropertyPlantAndEquipmentTextBlockDetails</Role>
      <ShortName>Schedule of Property, Plant and Equipment (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>143 - Disclosure - Schedule of Debt (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/DisclosureScheduleOfDebtTableTextBlockDetails</Role>
      <ShortName>Schedule of Debt (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>144 - Disclosure - Schedule of promissory note settlements (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/DisclosureScheduleOfPromissoryNoteSettlementsTableTextBlockDetails</Role>
      <ShortName>Schedule of promissory note settlements (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>145 - Disclosure - Schedule of fair value of warrants assumption (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/DisclosureScheduleOfFairValueOfWarrantsAssumptionTableTextBlockDetails</Role>
      <ShortName>Schedule of fair value of warrants assumption (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>146 - Disclosure - Non-interest bearing liabilities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/DisclosureOtherLiabilitiesTableTextBlockDetails</Role>
      <ShortName>Non-interest bearing liabilities (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>147 - Disclosure - Schedule Of Convertible Debt (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/DisclosureScheduleOfConvertibleDebtTextBlockTableTextBlockDetails</Role>
      <ShortName>Schedule Of Convertible Debt (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>148 - Disclosure - Company Issuance of Share Purchase Warrants (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/DisclosureCompanyIssuanceOfSharePurchaseWarrantsTableTextBlockDetails</Role>
      <ShortName>Company Issuance of Share Purchase Warrants (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>149 - Disclosure - Fair Value of the Purchaser and Non-Purchaser Warrants at Issuance (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/DisclosureFairValueOfThePurchaserAndNonpurchaserWarrantsAtIssuanceTableTextBlockDetails</Role>
      <ShortName>Fair Value of the Purchaser and Non-Purchaser Warrants at Issuance (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>150 - Disclosure - Schedule of Fair Value of Liabilities Activity (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/DisclosureScheduleOfFairValueOfLiabilitiesActivityTableTextBlockDetails</Role>
      <ShortName>Schedule of Fair Value of Liabilities Activity (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>151 - Disclosure - Embedded conversion options and warrants (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/DisclosureEmbeddedConversionOptionsAndWarrantsTableTextBlockDetails</Role>
      <ShortName>Embedded conversion options and warrants (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>152 - Disclosure - Schedule of Stockholders' Equity Note, Warrants or Rights, Activity (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/DisclosureScheduleOfStockholdersEquityNoteWarrantsOrRightsActivityTextBlockDetails</Role>
      <ShortName>Schedule of Stockholders' Equity Note, Warrants or Rights, Activity (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>153 - Disclosure - Schedule of Stockholders' Equity Note, Warrants or Rights (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/DisclosureScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlockDetails</Role>
      <ShortName>Schedule of Stockholders' Equity Note, Warrants or Rights (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>154 - Disclosure - Schedule of Share-based Compensation, Stock Options, Activity (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/DisclosureScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlockDetails</Role>
      <ShortName>Schedule of Share-based Compensation, Stock Options, Activity (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>155 - Disclosure - Schedule of Nonvested Share Activity (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/DisclosureScheduleOfNonvestedShareActivityTableTextBlockDetails</Role>
      <ShortName>Schedule of Nonvested Share Activity (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>156 - Disclosure - Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/DisclosureScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlockDetails</Role>
      <ShortName>Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>157 - Disclosure - Schedule of Deferred Tax Assets and Liabilities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/DisclosureScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlockDetails</Role>
      <ShortName>Schedule of Deferred Tax Assets and Liabilities (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>158 - Disclosure - Schedule of Effective Income Tax Rate Reconciliation (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.anavex.com/taxonomy/role/DisclosureScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlockDetails</Role>
      <ShortName>Schedule of Effective Income Tax Rate Reconciliation (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <Logs>
    <Log type="Info">Columns in Cash Flows statement 'INTERIM CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)' have maximum duration 364 days and at least 26 values. Shorter duration columns must have at least one fourth (6) as many values. Column '1/1/2014 - 3/31/2014' is shorter (89 days) and has only 2 values, so it is being removed.</Log>
    <Log type="Info">Columns in Cash Flows statement 'INTERIM CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)' have maximum duration 364 days and at least 26 values. Shorter duration columns must have at least one fourth (6) as many values. Column '1/1/2015 - 3/31/2015' is shorter (89 days) and has only 2 values, so it is being removed.</Log>
    <Log type="Info">Process Flow-Through: 102 - Statement - INTERIM CONDENSED CONSOLIDATED BALANCE SHEETS</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Mar. 31, 2014'</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Sep. 30, 2012'</Log>
    <Log type="Info">Process Flow-Through: 103 - Statement - INTERIM CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical)</Log>
    <Log type="Info">Process Flow-Through: 104 - Statement - INTERIM CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS</Log>
    <Log type="Info">Process Flow-Through: 105 - Statement - INTERIM CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS</Log>
  </Logs>
  <InputFiles>
    <File>avxl-20150331.xml</File>
    <File>avxl-20150331.xsd</File>
    <File>avxl-20150331_cal.xml</File>
    <File>avxl-20150331_def.xml</File>
    <File>avxl-20150331_lab.xml</File>
    <File>avxl-20150331_pre.xml</File>
  </InputFiles>
  <SupplementalFiles />
  <BaseTaxonomies />
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
