<?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>70</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>1</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>3</UnitCount>
  <MyReports>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>000010 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20140629/role/idr_DocumentDocumentAndEntityInformation</Role>
      <ShortName>Document and Entity Information</ShortName>
    </Report>
    <Report>
      <IsDefault>true</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>000020 - Statement - BALANCE SHEETS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20140629/role/idr_BALANCESHEETS</Role>
      <ShortName>BALANCE SHEETS</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>000030 - Statement - BALANCE SHEETS PARENTHETICAL</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20140629/role/idr_BALANCESHEETSPARENTHETICAL</Role>
      <ShortName>BALANCE SHEETS PARENTHETICAL</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>000040 - Statement - STATEMENTS OF OPERATIONS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20140629/role/idr_STATEMENTSOFOPERATIONS</Role>
      <ShortName>STATEMENTS OF OPERATIONS</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>000050 - Statement - STATEMENTS OF COMPREHENSIVE INCOME (LOSS)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20140629/role/idr_STATEMENTSOFCOMPREHENSIVEINCOMELOSS</Role>
      <ShortName>STATEMENTS OF COMPREHENSIVE INCOME (LOSS)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>000060 - Statement - STATEMENTS OF CASH FLOWS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20140629/role/idr_STATEMENTSOFCASHFLOWS</Role>
      <ShortName>STATEMENTS OF CASH FLOWS</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>000070 - Statement - STATEMENTS OF CASH FLOWS - CONTINUED</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20140629/role/idr_STATEMENTSOFCASHFLOWSCONTINUED</Role>
      <ShortName>STATEMENTS OF CASH FLOWS - CONTINUED</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>000080 - Disclosure - 1. Basis of Presentation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20140629/role/idr_Disclosure1BasisOfPresentation</Role>
      <ShortName>1. Basis of Presentation</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>000090 - Disclosure - 2. Investment in Local Partnerships</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20140629/role/idr_Disclosure2InvestmentInLocalPartnerships</Role>
      <ShortName>2. Investment in Local Partnerships</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>000100 - Disclosure - 3. Investment in Pemberwick Fund</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20140629/role/idr_Disclosure3InvestmentInPemberwickFund</Role>
      <ShortName>3. Investment in Pemberwick Fund</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>000110 - Disclosure - 4. Distributions To Partners</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20140629/role/idr_Disclosure4DistributionsToPartners</Role>
      <ShortName>4. Distributions To Partners</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>000120 - Disclosure - 5. Additional Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20140629/role/idr_Disclosure5AdditionalInformation</Role>
      <ShortName>5. Additional Information</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>000130 - Disclosure - 2. Investment in Local Partnerships: Capital Contributions (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20140629/role/idr_Disclosure2InvestmentInLocalPartnershipsCapitalContributionsDetails</Role>
      <ShortName>2. Investment in Local Partnerships: Capital Contributions (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>000140 - Disclosure - 2. Investment in Local Partnerships (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20140629/role/idr_Disclosure2InvestmentInLocalPartnershipsDetails</Role>
      <ShortName>2. Investment in Local Partnerships (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>000150 - Disclosure - 3. Investment in Pemberwick Fund (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20140629/role/idr_Disclosure3InvestmentInPemberwickFundDetails</Role>
      <ShortName>3. Investment in Pemberwick Fund (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>000160 - Disclosure - 4. Distributions To Partners (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20140629/role/idr_Disclosure4DistributionsToPartnersDetails</Role>
      <ShortName>4. Distributions To Partners (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">Process Flow-Through: 000020 - Statement - BALANCE SHEETS</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Jun. 29, 2013'</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Mar. 30, 2013'</Log>
    <Log type="Info">Process Flow-Through: 000030 - Statement - BALANCE SHEETS PARENTHETICAL</Log>
    <Log type="Info">Process Flow-Through: 000040 - Statement - STATEMENTS OF OPERATIONS</Log>
    <Log type="Info">Process Flow-Through: 000050 - Statement - STATEMENTS OF COMPREHENSIVE INCOME (LOSS)</Log>
    <Log type="Info">Process Flow-Through: 000060 - Statement - STATEMENTS OF CASH FLOWS</Log>
    <Log type="Info">Process Flow-Through: 000070 - Statement - STATEMENTS OF CASH FLOWS - CONTINUED</Log>
  </Logs>
  <InputFiles>
    <File>atciiix-20140629.xml</File>
    <File>atciiix-20140629.xsd</File>
    <File>atciiix-20140629_cal.xml</File>
    <File>atciiix-20140629_def.xml</File>
    <File>atciiix-20140629_lab.xml</File>
    <File>atciiix-20140629_pre.xml</File>
  </InputFiles>
  <SupplementalFiles />
  <BaseTaxonomies />
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
