<?xml version='1.0' encoding='UTF-8'?>
<FilingSummary>
  <Version>3.3.1.900</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>39</ContextCount>
  <ElementCount>75</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>29</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>2</UnitCount>
  <MyReports>
    <Report instance="bbht-20160307.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>0000 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.bbhfunds.com/role/DocumentAndEntityInformation</Role>
      <ShortName>Document and Entity Information</ShortName>
      <MenuCategory></MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="bbht-20160307.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>0001 - Document - Risk/Return Summary -  BBH CORE SELECT (Class N Shares) {Unlabeled}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.bbhfunds.com/role/RiskreturnSummary-BbhCoreSelectClassNSharesUnlabeled</Role>
      <ShortName>Risk/Return Summary -  BBH CORE SELECT (Class N Shares)</ShortName>
      <MenuCategory></MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="bbht-20160307.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>0008 - Disclosure - Risk/Return Detail Data - BBH CORE SELECT (Class N Shares) {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.bbhfunds.com/role/RiskreturnDetailData-BbhCoreSelectClassNSharesElements</Role>
      <ShortName>Risk/Return Detail Data - BBH CORE SELECT (Class N Shares)</ShortName>
      <MenuCategory></MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="bbht-20160307.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>0009 - Document - Risk/Return Summary - BBH CORE SELECT (Retail Class Shares) {Unlabeled}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.bbhfunds.com/role/RiskreturnSummary-BbhCoreSelectRetailClassSharesUnlabeled</Role>
      <ShortName>Risk/Return Summary - BBH CORE SELECT (Retail Class Shares)</ShortName>
      <MenuCategory></MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="bbht-20160307.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>0016 - Disclosure - Risk/Return Detail Data - BBH CORE SELECT (Retail Class Shares) {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.bbhfunds.com/role/RiskreturnDetailData-BbhCoreSelectRetailClassSharesElements</Role>
      <ShortName>Risk/Return Detail Data - BBH CORE SELECT (Retail Class Shares)</ShortName>
      <MenuCategory></MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="bbht-20160307.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>0017 - Document - Risk/Return Summary - BBH GLOBAL CORE SELECT (Class N Shares) {Unlabeled}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.bbhfunds.com/role/RiskreturnSummary-BbhGlobalCoreSelectClassNSharesUnlabeled</Role>
      <ShortName>Risk/Return Summary - BBH GLOBAL CORE SELECT (Class N Shares)</ShortName>
      <MenuCategory></MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="bbht-20160307.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>0024 - Document - Risk/Return Detail Data - BBH GLOBAL CORE SELECT (Class N Shares) {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.bbhfunds.com/role/RiskreturnDetailData-BbhGlobalCoreSelectClassNSharesElements</Role>
      <ShortName>Risk/Return Detail Data - BBH GLOBAL CORE SELECT (Class N Shares)</ShortName>
      <MenuCategory></MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="bbht-20160307.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>0025 - Document - Risk/Return Summary - BBH GLOBAL CORE SELECT (Retail Class Shares) {Unlabeled}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.bbhfunds.com/role/RiskreturnSummary-BbhGlobalCoreSelectRetailClassSharesUnlabeled</Role>
      <ShortName>Risk/Return Summary - BBH GLOBAL CORE SELECT (Retail Class Shares)</ShortName>
      <MenuCategory></MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="bbht-20160307.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>0032 - Disclosure - Risk/Return Detail Data - BBH GLOBAL CORE SELECT (Retail Class Shares) {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.bbhfunds.com/role/RiskreturnDetailData-BbhGlobalCoreSelectRetailClassSharesElements</Role>
      <ShortName>Risk/Return Detail Data - BBH GLOBAL CORE SELECT (Retail Class Shares)</ShortName>
      <MenuCategory></MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="bbht-20160307.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>0033 - Document - Risk/Return Summary - BBH INTERNATIONAL EQUITY FUND (Class N And Class I Shares) {Unlabeled}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.bbhfunds.com/role/RiskreturnSummary-BbhInternationalEquityFundClassNAndClassISharesUnlabeled</Role>
      <ShortName>Risk/Return Summary - BBH INTERNATIONAL EQUITY FUND (Class N And Class I Shares)</ShortName>
      <MenuCategory></MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="bbht-20160307.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>0040 - Disclosure - Risk/Return Detail Data - BBH INTERNATIONAL EQUITY FUND (Class N And Class I Shares) {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.bbhfunds.com/role/RiskreturnDetailData-BbhInternationalEquityFundClassNAndClassISharesElements</Role>
      <ShortName>Risk/Return Detail Data - BBH INTERNATIONAL EQUITY FUND (Class N And Class I Shares)</ShortName>
      <MenuCategory></MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="bbht-20160307.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>0041 - Document - Risk/Return Summary - BBH LIMITED DURATION FUND (Class N And Class I Shares) {Unlabeled}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.bbhfunds.com/role/RiskreturnSummary-BbhLimitedDurationFundClassNAndClassISharesUnlabeled</Role>
      <ShortName>Risk/Return Summary - BBH LIMITED DURATION FUND (Class N And Class I Shares)</ShortName>
      <MenuCategory></MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="bbht-20160307.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>0048 - Disclosure - Risk/Return Detail Data - BBH LIMITED DURATION FUND (Class N And Class I Shares) {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.bbhfunds.com/role/RiskreturnDetailData-BbhLimitedDurationFundClassNAndClassISharesElements</Role>
      <ShortName>Risk/Return Detail Data - BBH LIMITED DURATION FUND (Class N And Class I Shares)</ShortName>
      <MenuCategory></MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="bbht-20160307.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>true</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>0049 - Document - Risk/Return Summary - BBH INTERMEDIATE MUNICIPAL BOND FUND (Class N And Class I Shares) {Unlabeled}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.bbhfunds.com/role/RiskreturnSummary-BbhIntermediateMunicipalBondFundUnlabeled</Role>
      <ShortName>Risk/Return Summary - BBH INTERMEDIATE MUNICIPAL BOND FUND (Class N And Class I Shares)</ShortName>
      <MenuCategory></MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="bbht-20160307.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>0056 - Disclosure - Risk/Return Detail Data - BBH INTERMEDIATE MUNICIPAL BOND FUND (Class N And Class I Shares) {Elements}</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.bbhfunds.com/role/RiskreturnDetailData-BbhIntermediateMunicipalBondFundElements</Role>
      <ShortName>Risk/Return Detail Data - BBH INTERMEDIATE MUNICIPAL BOND FUND (Class N And Class I Shares)</ShortName>
      <MenuCategory></MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="bbht-20160307.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.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>
      <MenuCategory></MenuCategory>
      <Position>16</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File>bbht-20160307.xml</File>
    <File>bbht-20160307.xsd</File>
    <File>bbht-20160307_cal.xml</File>
    <File>bbht-20160307_def.xml</File>
    <File>bbht-20160307_lab.xml</File>
    <File>bbht-20160307_pre.xml</File>
  </InputFiles>
  <SupplementalFiles>
    <File>BarChart1.png</File>
    <File>BarChart2.png</File>
    <File>BarChart3.png</File>
    <File>BarChart4.png</File>
    <File>BarChart5.png</File>
    <File>BarChart6.png</File>
    <File>BarChart7.png</File>
  </SupplementalFiles>
  <BaseTaxonomies/>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
