<?xml version="1.0" encoding="utf-8"?>
<FilingSummary xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <Version>2.4.0.6</Version>
  <ProcessingTime />
  <ReportFormat>Html</ReportFormat>
  <ContextCount>34</ContextCount>
  <ElementCount>93</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>4</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>6</UnitCount>
  <MyReports>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>00 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.currencyshares.com/role/DocumentDocumentAndEntityInformation</Role>
      <ShortName>Document and Entity Information</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>0110 - Statement - Statements of Financial Condition</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.currencyshares.com/role/StatementStatementsOfFinancialCondition</Role>
      <ShortName>Statements of Financial Condition</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>0111 - Statement - Statements of Financial Condition (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.currencyshares.com/role/StatementStatementsOfFinancialConditionParenthetical</Role>
      <ShortName>Statements of Financial Condition (Parenthetical)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>0120 - Statement - Statements of Income and Comprehensive Income</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.currencyshares.com/role/StatementStatementsOfIncomeAndComprehensiveIncome</Role>
      <ShortName>Statements of Income and Comprehensive Income</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>0130 - Statement - Statements of Changes in Shareholders' Equity</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.currencyshares.com/role/StatementStatementsOfChangesInShareholdersEquity</Role>
      <ShortName>Statements of Changes in Shareholders' Equity</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>0140 - Statement - Statements of Cash Flows</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.currencyshares.com/role/StatementStatementsOfCashFlows</Role>
      <ShortName>Statements of Cash Flows</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>0201 - Disclosure - Organization and Description of the Trust</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.currencyshares.com/role/DisclosureOrganizationAndDescriptionOfTrust</Role>
      <ShortName>Organization and Description of the Trust</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>0202 - Disclosure - Significant Accounting Policies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.currencyshares.com/role/DisclosureSignificantAccountingPolicies</Role>
      <ShortName>Significant Accounting Policies</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>0203 - Disclosure - Australian Dollar Deposits</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.currencyshares.com/role/DisclosureAustralianDollarDeposits</Role>
      <ShortName>Australian Dollar Deposits</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>0204 - Disclosure - Redeemable Capital Shares</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.currencyshares.com/role/DisclosureRedeemableCapitalShares</Role>
      <ShortName>Redeemable Capital Shares</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>0205 - Disclosure - Selected Quarterly Information (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.currencyshares.com/role/SelectedQuarterlyInformation</Role>
      <ShortName>Selected Quarterly Information (Unaudited)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>0206 - Disclosure - Sponsor's Fee</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.currencyshares.com/role/DisclosureSponsorSFee</Role>
      <ShortName>Sponsor's Fee</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>0207 - Disclosure - Related Parties</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.currencyshares.com/role/DisclosureRelatedParties</Role>
      <ShortName>Related Parties</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>0208 - Disclosure - Concentration Risk</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.currencyshares.com/role/DisclosureConcentrationRisk</Role>
      <ShortName>Concentration Risk</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>0209 - Disclosure - Commitments and Contingencies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.currencyshares.com/role/DisclosureCommitmentsAndContingencies</Role>
      <ShortName>Commitments and Contingencies</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>0402 - Disclosure - Significant Accounting Policies (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.currencyshares.com/role/SignificantAccountingPoliciesPolicies</Role>
      <ShortName>Significant Accounting Policies (Policies)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>0504 - Disclosure - Redeemable Capital Shares (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.currencyshares.com/role/RedeemableCapitalSharesTables</Role>
      <ShortName>Redeemable Capital Shares (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>0505 - Disclosure - Selected Quarterly Information (Unaudited) (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.currencyshares.com/role/SelectedQuarterlyInformationTables</Role>
      <ShortName>Selected Quarterly Information (Unaudited) (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>0601 - Disclosure - Organization and Description of the Trust (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.currencyshares.com/role/OrganizationAndDescriptionOfTrustDetailsTextual</Role>
      <ShortName>Organization and Description of the Trust (Details Textual)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>0602 - Disclosure - Significant Accounting Policies (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.currencyshares.com/role/SignificantAccountingPoliciesDetailsTextual</Role>
      <ShortName>Significant Accounting Policies (Details Textual)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>0603 - Disclosure - Australian Dollar Deposits (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.currencyshares.com/role/AustralianDollarDepositsDetailsTextual</Role>
      <ShortName>Australian Dollar Deposits (Details Textual)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>0604 - Disclosure - Redeemable Capital Shares (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.currencyshares.com/role/RedeemableCapitalSharesDetails</Role>
      <ShortName>Redeemable Capital Shares (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>06041 - Disclosure - Redeemable Capital Shares (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.currencyshares.com/role/RedeemableCapitalSharesDetailsTextual</Role>
      <ShortName>Redeemable Capital Shares (Details Textual)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>0605 - Disclosure - Selected Quarterly Information (Unaudited) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.currencyshares.com/role/SelectedQuarterlyInformationDetails</Role>
      <ShortName>Selected Quarterly Information (Unaudited) (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>0606 - Disclosure - Sponsor's Fee (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.currencyshares.com/role/SponsorsFeeDetailsTextual</Role>
      <ShortName>Sponsor's Fee (Details Textual)</ShortName>
    </Report>
    <Report>
      <IsDefault>true</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <Logs>
    <Log type="Info">Process Flow-Through: 0110 - Statement - Statements of Financial Condition</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Oct. 31, 2012
AUD'</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Oct. 31, 2011
AUD'</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Oct. 31, 2010
USD ($)'</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Oct. 31, 2010
AUD'</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Oct. 31, 2009
USD ($)'</Log>
    <Log type="Info">Process Flow-Through: 0111 - Statement - Statements of Financial Condition (Parenthetical)</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Oct. 31, 2010'</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Oct. 31, 2009'</Log>
    <Log type="Info">Process Flow-Through: 0120 - Statement - Statements of Income and Comprehensive Income</Log>
    <Log type="Info">Process Flow-Through: 0140 - Statement - Statements of Cash Flows</Log>
  </Logs>
  <InputFiles>
    <File>fxa-20121031.xml</File>
    <File>fxa-20121031.xsd</File>
    <File>fxa-20121031_cal.xml</File>
    <File>fxa-20121031_def.xml</File>
    <File>fxa-20121031_lab.xml</File>
    <File>fxa-20121031_pre.xml</File>
  </InputFiles>
  <SupplementalFiles />
  <BaseTaxonomies />
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
