<?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>2.4.0.8</Version>
  <ProcessingTime />
  <ReportFormat>Html</ReportFormat>
  <ContextCount>196</ContextCount>
  <ElementCount>93</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>67</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>2</UnitCount>
  <MyReports>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>000000 - Document - Document and Entity Information {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DocumentDocumentandEntityInformationElements</Role>
      <ShortName>Document and Entity Information</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>000011 - Document - Risk/Return Summary {Unlabeled} - Fidelity Series Broad Market Opportunities Fund</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DocumentRiskReturnSummaryUnlabeledFidelitySeriesBroadMarketOpportunitiesFund</Role>
      <ShortName>Risk/Return Summary  - Fidelity Series Broad Market Opportunities Fund</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>000019 - Disclosure - Risk/Return Detail Data {Elements} - Fidelity Series Broad Market Opportunities Fund</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DisclosureRiskReturnDetailDataElementsFidelitySeriesBroadMarketOpportunitiesFund</Role>
      <ShortName>Risk/Return Detail Data  - Fidelity Series Broad Market Opportunities Fund</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>000021 - Document - Risk/Return Summary {Unlabeled} - Fidelity Asset Manager 20% Class A T B C</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DocumentRiskReturnSummaryUnlabeledFidelityAssetManager20ClassATBC</Role>
      <ShortName>Risk/Return Summary  - Fidelity Asset Manager 20% Class A T B C</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>000029 - Disclosure - Risk/Return Detail Data {Elements} - Fidelity Asset Manager 20% Class A T B C</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DisclosureRiskReturnDetailDataElementsFidelityAssetManager20ClassATBC</Role>
      <ShortName>Risk/Return Detail Data  - Fidelity Asset Manager 20% Class A T B C</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>000031 - Document - Risk/Return Summary {Unlabeled} - Fidelity Asset Manager 30% Class A T B C</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DocumentRiskReturnSummaryUnlabeledFidelityAssetManager30ClassATBC</Role>
      <ShortName>Risk/Return Summary  - Fidelity Asset Manager 30% Class A T B C</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>000039 - Disclosure - Risk/Return Detail Data {Elements} - Fidelity Asset Manager 30% Class A T B C</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DisclosureRiskReturnDetailDataElementsFidelityAssetManager30ClassATBC</Role>
      <ShortName>Risk/Return Detail Data  - Fidelity Asset Manager 30% Class A T B C</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>000041 - Document - Risk/Return Summary {Unlabeled} - Fidelity Asset Manager 40% Class A T B C</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DocumentRiskReturnSummaryUnlabeledFidelityAssetManager40ClassATBC</Role>
      <ShortName>Risk/Return Summary  - Fidelity Asset Manager 40% Class A T B C</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>000049 - Disclosure - Risk/Return Detail Data {Elements} - Fidelity Asset Manager 40% Class A T B C</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DisclosureRiskReturnDetailDataElementsFidelityAssetManager40ClassATBC</Role>
      <ShortName>Risk/Return Detail Data  - Fidelity Asset Manager 40% Class A T B C</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>000051 - Document - Risk/Return Summary {Unlabeled} - Fidelity Asset Manager 50% Class A T B C</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DocumentRiskReturnSummaryUnlabeledFidelityAssetManager50ClassATBC</Role>
      <ShortName>Risk/Return Summary  - Fidelity Asset Manager 50% Class A T B C</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>000059 - Disclosure - Risk/Return Detail Data {Elements} - Fidelity Asset Manager 50% Class A T B C</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DisclosureRiskReturnDetailDataElementsFidelityAssetManager50ClassATBC</Role>
      <ShortName>Risk/Return Detail Data  - Fidelity Asset Manager 50% Class A T B C</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>000061 - Document - Risk/Return Summary {Unlabeled} - Fidelity Asset Manager 60% Class A T B C</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DocumentRiskReturnSummaryUnlabeledFidelityAssetManager60ClassATBC</Role>
      <ShortName>Risk/Return Summary  - Fidelity Asset Manager 60% Class A T B C</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>000069 - Disclosure - Risk/Return Detail Data {Elements} - Fidelity Asset Manager 60% Class A T B C</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DisclosureRiskReturnDetailDataElementsFidelityAssetManager60ClassATBC</Role>
      <ShortName>Risk/Return Detail Data  - Fidelity Asset Manager 60% Class A T B C</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>000071 - Document - Risk/Return Summary {Unlabeled} - Fidelity Asset Manager 70% Class A T B C</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DocumentRiskReturnSummaryUnlabeledFidelityAssetManager70ClassATBC</Role>
      <ShortName>Risk/Return Summary  - Fidelity Asset Manager 70% Class A T B C</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>000079 - Disclosure - Risk/Return Detail Data {Elements} - Fidelity Asset Manager 70% Class A T B C</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DisclosureRiskReturnDetailDataElementsFidelityAssetManager70ClassATBC</Role>
      <ShortName>Risk/Return Detail Data  - Fidelity Asset Manager 70% Class A T B C</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>000081 - Document - Risk/Return Summary {Unlabeled} - Fidelity Asset Manager 85% Class A T B C</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DocumentRiskReturnSummaryUnlabeledFidelityAssetManager85ClassATBC</Role>
      <ShortName>Risk/Return Summary  - Fidelity Asset Manager 85% Class A T B C</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>000089 - Disclosure - Risk/Return Detail Data {Elements} - Fidelity Asset Manager 85% Class A T B C</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DisclosureRiskReturnDetailDataElementsFidelityAssetManager85ClassATBC</Role>
      <ShortName>Risk/Return Detail Data  - Fidelity Asset Manager 85% Class A T B C</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R65.htm</HtmlFileName>
      <LongName>000091 - Document - Risk/Return Summary {Unlabeled} - Fidelity Asset Manager 20% Institutional Class</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DocumentRiskReturnSummaryUnlabeledFidelityAssetManager20InstitutionalClass</Role>
      <ShortName>Risk/Return Summary  - Fidelity Asset Manager 20% Institutional Class</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R71.htm</HtmlFileName>
      <LongName>000099 - Disclosure - Risk/Return Detail Data {Elements} - Fidelity Asset Manager 20% Institutional Class</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DisclosureRiskReturnDetailDataElementsFidelityAssetManager20InstitutionalClass</Role>
      <ShortName>Risk/Return Detail Data  - Fidelity Asset Manager 20% Institutional Class</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R72.htm</HtmlFileName>
      <LongName>000101 - Document - Risk/Return Summary {Unlabeled} - Fidelity Asset Manager 30% Institutional Class</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DocumentRiskReturnSummaryUnlabeledFidelityAssetManager30InstitutionalClass</Role>
      <ShortName>Risk/Return Summary  - Fidelity Asset Manager 30% Institutional Class</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R78.htm</HtmlFileName>
      <LongName>000109 - Disclosure - Risk/Return Detail Data {Elements} - Fidelity Asset Manager 30% Institutional Class</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DisclosureRiskReturnDetailDataElementsFidelityAssetManager30InstitutionalClass</Role>
      <ShortName>Risk/Return Detail Data  - Fidelity Asset Manager 30% Institutional Class</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R79.htm</HtmlFileName>
      <LongName>000111 - Document - Risk/Return Summary {Unlabeled} - Fidelity Asset Manager 40% Institutional Class</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DocumentRiskReturnSummaryUnlabeledFidelityAssetManager40InstitutionalClass</Role>
      <ShortName>Risk/Return Summary  - Fidelity Asset Manager 40% Institutional Class</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R85.htm</HtmlFileName>
      <LongName>000119 - Disclosure - Risk/Return Detail Data {Elements} - Fidelity Asset Manager 40% Institutional Class</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DisclosureRiskReturnDetailDataElementsFidelityAssetManager40InstitutionalClass</Role>
      <ShortName>Risk/Return Detail Data  - Fidelity Asset Manager 40% Institutional Class</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R86.htm</HtmlFileName>
      <LongName>000121 - Document - Risk/Return Summary {Unlabeled} - Fidelity Asset Manager 50% Institutional Class</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DocumentRiskReturnSummaryUnlabeledFidelityAssetManager50InstitutionalClass</Role>
      <ShortName>Risk/Return Summary  - Fidelity Asset Manager 50% Institutional Class</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R92.htm</HtmlFileName>
      <LongName>000129 - Disclosure - Risk/Return Detail Data {Elements} - Fidelity Asset Manager 50% Institutional Class</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DisclosureRiskReturnDetailDataElementsFidelityAssetManager50InstitutionalClass</Role>
      <ShortName>Risk/Return Detail Data  - Fidelity Asset Manager 50% Institutional Class</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R93.htm</HtmlFileName>
      <LongName>000131 - Document - Risk/Return Summary {Unlabeled} - Fidelity Asset Manager 60% Institutional Class</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DocumentRiskReturnSummaryUnlabeledFidelityAssetManager60InstitutionalClass</Role>
      <ShortName>Risk/Return Summary  - Fidelity Asset Manager 60% Institutional Class</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R99.htm</HtmlFileName>
      <LongName>000139 - Disclosure - Risk/Return Detail Data {Elements} - Fidelity Asset Manager 60% Institutional Class</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DisclosureRiskReturnDetailDataElementsFidelityAssetManager60InstitutionalClass</Role>
      <ShortName>Risk/Return Detail Data  - Fidelity Asset Manager 60% Institutional Class</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R100.htm</HtmlFileName>
      <LongName>000141 - Document - Risk/Return Summary {Unlabeled} - Fidelity Asset Manager 70% Institutional Class</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DocumentRiskReturnSummaryUnlabeledFidelityAssetManager70InstitutionalClass</Role>
      <ShortName>Risk/Return Summary  - Fidelity Asset Manager 70% Institutional Class</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R106.htm</HtmlFileName>
      <LongName>000149 - Disclosure - Risk/Return Detail Data {Elements} - Fidelity Asset Manager 70% Institutional Class</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DisclosureRiskReturnDetailDataElementsFidelityAssetManager70InstitutionalClass</Role>
      <ShortName>Risk/Return Detail Data  - Fidelity Asset Manager 70% Institutional Class</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R107.htm</HtmlFileName>
      <LongName>000151 - Document - Risk/Return Summary {Unlabeled} - Fidelity Asset Manager 85% Institutional Class</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DocumentRiskReturnSummaryUnlabeledFidelityAssetManager85InstitutionalClass</Role>
      <ShortName>Risk/Return Summary  - Fidelity Asset Manager 85% Institutional Class</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R113.htm</HtmlFileName>
      <LongName>000159 - Disclosure - Risk/Return Detail Data {Elements} - Fidelity Asset Manager 85% Institutional Class</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DisclosureRiskReturnDetailDataElementsFidelityAssetManager85InstitutionalClass</Role>
      <ShortName>Risk/Return Detail Data  - Fidelity Asset Manager 85% Institutional Class</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R114.htm</HtmlFileName>
      <LongName>000161 - Document - Risk/Return Summary {Unlabeled} - Fidelity Asset Manager 20%</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DocumentRiskReturnSummaryUnlabeledFidelityAssetManager20</Role>
      <ShortName>Risk/Return Summary  - Fidelity Asset Manager 20%</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R120.htm</HtmlFileName>
      <LongName>000169 - Disclosure - Risk/Return Detail Data {Elements} - Fidelity Asset Manager 20%</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DisclosureRiskReturnDetailDataElementsFidelityAssetManager20</Role>
      <ShortName>Risk/Return Detail Data  - Fidelity Asset Manager 20%</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R121.htm</HtmlFileName>
      <LongName>000171 - Document - Risk/Return Summary {Unlabeled} - Fidelity Asset Manager 30%</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DocumentRiskReturnSummaryUnlabeledFidelityAssetManager30</Role>
      <ShortName>Risk/Return Summary  - Fidelity Asset Manager 30%</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R127.htm</HtmlFileName>
      <LongName>000179 - Disclosure - Risk/Return Detail Data {Elements} - Fidelity Asset Manager 30%</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DisclosureRiskReturnDetailDataElementsFidelityAssetManager30</Role>
      <ShortName>Risk/Return Detail Data  - Fidelity Asset Manager 30%</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R128.htm</HtmlFileName>
      <LongName>000181 - Document - Risk/Return Summary {Unlabeled} - Fidelity Asset Manager 40%</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DocumentRiskReturnSummaryUnlabeledFidelityAssetManager40</Role>
      <ShortName>Risk/Return Summary  - Fidelity Asset Manager 40%</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R134.htm</HtmlFileName>
      <LongName>000189 - Disclosure - Risk/Return Detail Data {Elements} - Fidelity Asset Manager 40%</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DisclosureRiskReturnDetailDataElementsFidelityAssetManager40</Role>
      <ShortName>Risk/Return Detail Data  - Fidelity Asset Manager 40%</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R135.htm</HtmlFileName>
      <LongName>000191 - Document - Risk/Return Summary {Unlabeled} - Fidelity Asset Manager 50%</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DocumentRiskReturnSummaryUnlabeledFidelityAssetManager50</Role>
      <ShortName>Risk/Return Summary  - Fidelity Asset Manager 50%</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R141.htm</HtmlFileName>
      <LongName>000199 - Disclosure - Risk/Return Detail Data {Elements} - Fidelity Asset Manager 50%</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DisclosureRiskReturnDetailDataElementsFidelityAssetManager50</Role>
      <ShortName>Risk/Return Detail Data  - Fidelity Asset Manager 50%</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R142.htm</HtmlFileName>
      <LongName>000201 - Document - Risk/Return Summary {Unlabeled} - Fidelity Asset Manager 60%</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DocumentRiskReturnSummaryUnlabeledFidelityAssetManager60</Role>
      <ShortName>Risk/Return Summary  - Fidelity Asset Manager 60%</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R148.htm</HtmlFileName>
      <LongName>000209 - Disclosure - Risk/Return Detail Data {Elements} - Fidelity Asset Manager 60%</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DisclosureRiskReturnDetailDataElementsFidelityAssetManager60</Role>
      <ShortName>Risk/Return Detail Data  - Fidelity Asset Manager 60%</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R149.htm</HtmlFileName>
      <LongName>000211 - Document - Risk/Return Summary {Unlabeled} - Fidelity Asset Manager 70%</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DocumentRiskReturnSummaryUnlabeledFidelityAssetManager70</Role>
      <ShortName>Risk/Return Summary  - Fidelity Asset Manager 70%</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R155.htm</HtmlFileName>
      <LongName>000219 - Disclosure - Risk/Return Detail Data {Elements} - Fidelity Asset Manager 70%</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DisclosureRiskReturnDetailDataElementsFidelityAssetManager70</Role>
      <ShortName>Risk/Return Detail Data  - Fidelity Asset Manager 70%</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R156.htm</HtmlFileName>
      <LongName>000221 - Document - Risk/Return Summary {Unlabeled} - Fidelity Asset Manager 85%</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DocumentRiskReturnSummaryUnlabeledFidelityAssetManager85</Role>
      <ShortName>Risk/Return Summary  - Fidelity Asset Manager 85%</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R162.htm</HtmlFileName>
      <LongName>000229 - Disclosure - Risk/Return Detail Data {Elements} - Fidelity Asset Manager 85%</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fidelity.com/role/DisclosureRiskReturnDetailDataElementsFidelityAssetManager85</Role>
      <ShortName>Risk/Return Detail Data  - Fidelity Asset Manager 85%</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R163.htm</HtmlFileName>
      <LongName>040000 - Disclosure - Risk/Return Detail Data {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/rr/role/RiskReturnDetailData</Role>
      <ShortName>Risk/Return Detail Data</ShortName>
    </Report>
    <Report>
      <IsDefault>true</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <Logs />
  <InputFiles>
    <File>fcst-20131127.xml</File>
    <File>fcst-20131127.xsd</File>
    <File>fcst-20131127_cal.xml</File>
    <File>fcst-20131127_def.xml</File>
    <File>fcst-20131127_lab.xml</File>
    <File>fcst-20131127_pre.xml</File>
  </InputFiles>
  <SupplementalFiles>
    <File>BarChart1.jpg</File>
    <File>BarChart2.jpg</File>
    <File>BarChart3.jpg</File>
    <File>BarChart4.jpg</File>
    <File>BarChart5.jpg</File>
    <File>BarChart6.jpg</File>
    <File>BarChart7.jpg</File>
    <File>BarChart8.jpg</File>
    <File>BarChart9.jpg</File>
    <File>BarChart10.jpg</File>
    <File>BarChart11.jpg</File>
    <File>BarChart12.jpg</File>
    <File>BarChart13.jpg</File>
    <File>BarChart14.jpg</File>
    <File>BarChart15.jpg</File>
    <File>BarChart16.jpg</File>
    <File>BarChart17.jpg</File>
    <File>BarChart18.jpg</File>
    <File>BarChart19.jpg</File>
    <File>BarChart20.jpg</File>
    <File>BarChart21.jpg</File>
    <File>BarChart22.jpg</File>
  </SupplementalFiles>
  <BaseTaxonomies />
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
