<?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>9</ContextCount>
  <ElementCount>35</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>9</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>1</UnitCount>
  <MyReports>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>01001 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.americanbeaconfunds.com/role/DocumentAndEntityInformation1</Role>
      <ShortName>Document and Entity Information</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>01002 - Document - Risk/Return Summary (American Beacon Intermediate Bond Fund) {Unlabeled}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.americanbeaconfunds.com/role/RRSummary2</Role>
      <ShortName>Risk/Return Summary (American Beacon Intermediate Bond Fund)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>01005 - Disclosure - Risk/Return Detail Data (American Beacon Intermediate Bond Fund) {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.americanbeaconfunds.com/role/RRDetailData5</Role>
      <ShortName>Risk/Return Detail Data (American Beacon Intermediate Bond Fund)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.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>
    <Log type="Info">Element rr_AverageAnnualReturnYear10 had a mix of decimals attribute values: 3 4.</Log>
  </Logs>
  <InputFiles>
    <File>ck0000809593-20140519.xml</File>
    <File>ck0000809593-20140519.xsd</File>
    <File>ck0000809593-20140519_def.xml</File>
    <File>ck0000809593-20140519_lab.xml</File>
    <File>ck0000809593-20140519_pre.xml</File>
  </InputFiles>
  <SupplementalFiles>
    <File>BarChart1.jpg</File>
  </SupplementalFiles>
  <BaseTaxonomies />
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>false</HasCalculationLinkbase>
</FilingSummary>
