<?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>46</ContextCount>
  <ElementCount>173</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>11</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>4</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/20130330/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/20130330/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/20130330/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/20130330/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/20130330/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 CHANGES IN PARTNERS' EQUITY (DEFICIT)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_STATEMENTSOFCHANGESINPARTNERSEQUITYDEFICIT</Role>
      <ShortName>STATEMENTS OF CHANGES IN PARTNERS' EQUITY (DEFICIT)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>000070 - Statement - STATEMENTS OF CASH FLOWS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_STATEMENTSOFCASHFLOWS</Role>
      <ShortName>STATEMENTS OF CASH FLOWS</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>000080 - Statement - STATEMENTS OF CASH FLOWS - CONTINUED</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_STATEMENTSOFCASHFLOWSCONTINUED</Role>
      <ShortName>STATEMENTS OF CASH FLOWS - CONTINUED</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>000090 - Disclosure - 1. Organization, Purpose and Summary of Significant Accounting Policies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_Disclosure1OrganizationPurposeAndSummaryOfSignificantAccountingPolicies</Role>
      <ShortName>1. Organization, Purpose and Summary of Significant Accounting Policies</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>000100 - Disclosure - 2. Capital Contributions</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_Disclosure2CapitalContributions</Role>
      <ShortName>2. Capital Contributions</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>000110 - Disclosure - 3. Cash and Cash Equivalents</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_Disclosure3CashAndCashEquivalents</Role>
      <ShortName>3. Cash and Cash Equivalents</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>000120 - Disclosure - 4. Investment in Pemberwick Fund</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_Disclosure4InvestmentInPemberwickFund</Role>
      <ShortName>4. Investment in Pemberwick Fund</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>000130 - Disclosure - 5. Investment in Bond</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_Disclosure5InvestmentInBond</Role>
      <ShortName>5. Investment in Bond</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>000140 - Disclosure - 6. Investment in Local Partnerships</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_Disclosure6InvestmentInLocalPartnerships</Role>
      <ShortName>6. Investment in Local Partnerships</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>000150 - Disclosure - 7. Transactions With General Partner and Affiliates</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_Disclosure7TransactionsWithGeneralPartnerAndAffiliates</Role>
      <ShortName>7. Transactions With General Partner and Affiliates</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>000160 - Disclosure - 8. Taxable Income (Loss)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_Disclosure8TaxableIncomeLoss</Role>
      <ShortName>8. Taxable Income (Loss)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>000170 - Disclosure - 9. Fair Value of Financial Instruments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_Disclosure9FairValueOfFinancialInstruments</Role>
      <ShortName>9. Fair Value of Financial Instruments</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>000180 - Disclosure - 1. Organization, Purpose and Summary of Significant Accounting Policies: Basis of Accounting and Fiscal Year (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_Disclosure1OrganizationPurposeAndSummaryOfSignificantAccountingPoliciesBasisOfAccountingAndFiscalYearPolicies</Role>
      <ShortName>1. Organization, Purpose and Summary of Significant Accounting Policies: Basis of Accounting and Fiscal Year (Policies)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>000190 - Disclosure - 1. Organization, Purpose and Summary of Significant Accounting Policies: Cash and Cash Equivalents (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_Disclosure1OrganizationPurposeAndSummaryOfSignificantAccountingPoliciesCashAndCashEquivalentsPolicies</Role>
      <ShortName>1. Organization, Purpose and Summary of Significant Accounting Policies: Cash and Cash Equivalents (Policies)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>000200 - Disclosure - 1. Organization, Purpose and Summary of Significant Accounting Policies: Fair Value Measurements (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_Disclosure1OrganizationPurposeAndSummaryOfSignificantAccountingPoliciesFairValueMeasurementsPolicies</Role>
      <ShortName>1. Organization, Purpose and Summary of Significant Accounting Policies: Fair Value Measurements (Policies)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>000210 - Disclosure - 1. Organization, Purpose and Summary of Significant Accounting Policies: Income Taxes (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_Disclosure1OrganizationPurposeAndSummaryOfSignificantAccountingPoliciesIncomeTaxesPolicies</Role>
      <ShortName>1. Organization, Purpose and Summary of Significant Accounting Policies: Income Taxes (Policies)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>000220 - Disclosure - 1. Organization, Purpose and Summary of Significant Accounting Policies: Use of Estimates (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_Disclosure1OrganizationPurposeAndSummaryOfSignificantAccountingPoliciesUseOfEstimatesPolicies</Role>
      <ShortName>1. Organization, Purpose and Summary of Significant Accounting Policies: Use of Estimates (Policies)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>000230 - Disclosure - 1. Organization, Purpose and Summary of Significant Accounting Policies: Reclassifications (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_Disclosure1OrganizationPurposeAndSummaryOfSignificantAccountingPoliciesReclassificationsPolicies</Role>
      <ShortName>1. Organization, Purpose and Summary of Significant Accounting Policies: Reclassifications (Policies)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>000240 - Disclosure - 6. Investment in Local Partnerships: Local Partnership Interests Owned as of March 30, 2013 (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_Disclosure6InvestmentInLocalPartnershipsLocalPartnershipInterestsOwnedAsOfMarch302013Tables</Role>
      <ShortName>6. Investment in Local Partnerships: Local Partnership Interests Owned as of March 30, 2013 (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>000250 - Disclosure - 6. Investment in Local Partnerships: The Partnership and American Tax Credit Properties II L.P. ('ATCP II') together, in the aggregate, own a 99% Local Partnership Interest in the following Local Partnerships (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_Disclosure6InvestmentInLocalPartnershipsThePartnershipAndAmericanTaxCreditPropertiesIILPATCPIITogetherInTheAggregateOwnA99LocalPartnershipInterestInTheFollowingLocalPartnershipsTables</Role>
      <ShortName>6. Investment in Local Partnerships: The Partnership and American Tax Credit Properties II L.P. ('ATCP II') together, in the aggregate, own a 99% Local Partnership Interest in the following Local Partnerships (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>000260 - Disclosure - 6. Investment in Local Partnerships: Combined Balance Sheets of the Local Partnerships (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_Disclosure6InvestmentInLocalPartnershipsCombinedBalanceSheetsOfTheLocalPartnershipsTables</Role>
      <ShortName>6. Investment in Local Partnerships: Combined Balance Sheets of the Local Partnerships (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>000270 - Disclosure - 6. Investment in Local Partnerships: Combined Statements of Operations of the Local Partnerships (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_Disclosure6InvestmentInLocalPartnershipsCombinedStatementsOfOperationsOfTheLocalPartnershipsTables</Role>
      <ShortName>6. Investment in Local Partnerships: Combined Statements of Operations of the Local Partnerships (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>000280 - Disclosure - 8. Taxable Income (Loss): Reconciliation of Financial Statement Net Income (Loss) to the Tax Return Income (Loss) (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_Disclosure8TaxableIncomeLossReconciliationOfFinancialStatementNetIncomeLossToTheTaxReturnIncomeLossTables</Role>
      <ShortName>8. Taxable Income (Loss): Reconciliation of Financial Statement Net Income (Loss) to the Tax Return Income (Loss) (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>000290 - Disclosure - 8. Taxable Income (Loss): Differences Between Investment in Local Partnerships for Tax and Financial Reporting Purposes (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_Disclosure8TaxableIncomeLossDifferencesBetweenInvestmentInLocalPartnershipsForTaxAndFinancialReportingPurposesTables</Role>
      <ShortName>8. Taxable Income (Loss): Differences Between Investment in Local Partnerships for Tax and Financial Reporting Purposes (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>000300 - Disclosure - 2. Capital Contributions (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_Disclosure2CapitalContributionsDetails</Role>
      <ShortName>2. Capital Contributions (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>000310 - Disclosure - 3. Cash and Cash Equivalents (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_Disclosure3CashAndCashEquivalentsDetails</Role>
      <ShortName>3. Cash and Cash Equivalents (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>000320 - Disclosure - 4. Investment in Pemberwick Fund (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_Disclosure4InvestmentInPemberwickFundDetails</Role>
      <ShortName>4. Investment in Pemberwick Fund (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>000330 - Disclosure - 4. Investment in Pemberwick Fund: Advisor's Fee (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_Disclosure4InvestmentInPemberwickFundAdvisorSFeeDetails</Role>
      <ShortName>4. Investment in Pemberwick Fund: Advisor's Fee (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>000340 - Disclosure - 6. Investment in Local Partnerships: Other (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_Disclosure6InvestmentInLocalPartnershipsOtherDetails</Role>
      <ShortName>6. Investment in Local Partnerships: Other (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>000350 - Disclosure - 6. Investment in Local Partnerships (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_Disclosure6InvestmentInLocalPartnershipsDetails</Role>
      <ShortName>6. Investment in Local Partnerships (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>000360 - Disclosure - 6. Investment in Local Partnerships: Orange City Plaza, Limited Partnership ('Orange City') (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_Disclosure6InvestmentInLocalPartnershipsOrangeCityPlazaLimitedPartnershipOrangeCityDetails</Role>
      <ShortName>6. Investment in Local Partnerships: Orange City Plaza, Limited Partnership ('Orange City') (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>000370 - Disclosure - 6. Investment in Local Partnerships: Queen Lane (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_Disclosure6InvestmentInLocalPartnershipsQueenLaneDetails</Role>
      <ShortName>6. Investment in Local Partnerships: Queen Lane (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>000380 - Disclosure - 6. Investment in Local Partnerships: Partnership losses in excess of investment (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_Disclosure6InvestmentInLocalPartnershipsPartnershipLossesInExcessOfInvestmentDetails</Role>
      <ShortName>6. Investment in Local Partnerships: Partnership losses in excess of investment (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>000390 - Disclosure - 6. Investment in Local Partnerships: Combined Balance Sheets of the Local Partnerships (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_Disclosure6InvestmentInLocalPartnershipsCombinedBalanceSheetsOfTheLocalPartnershipsDetails</Role>
      <ShortName>6. Investment in Local Partnerships: Combined Balance Sheets of the Local Partnerships (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>000400 - Disclosure - 6. Investment in Local Partnerships: Combined Statements of Operations of the Local Partnerships (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_Disclosure6InvestmentInLocalPartnershipsCombinedStatementsOfOperationsOfTheLocalPartnershipsDetails</Role>
      <ShortName>6. Investment in Local Partnerships: Combined Statements of Operations of the Local Partnerships (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>000410 - Disclosure - 7. Transactions With General Partner and Affiliates (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_Disclosure7TransactionsWithGeneralPartnerAndAffiliatesDetails</Role>
      <ShortName>7. Transactions With General Partner and Affiliates (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>000420 - Disclosure - 7. Transactions With General Partner and Affiliates: Unpaid Management and Additional Management Fees (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_Disclosure7TransactionsWithGeneralPartnerAndAffiliatesUnpaidManagementAndAdditionalManagementFeesDetails</Role>
      <ShortName>7. Transactions With General Partner and Affiliates: Unpaid Management and Additional Management Fees (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>000430 - Disclosure - 7. Transactions With General Partner and Affiliates: Unpaid Administration and Additional Administration Fees (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_Disclosure7TransactionsWithGeneralPartnerAndAffiliatesUnpaidAdministrationAndAdditionalAdministrationFeesDetails</Role>
      <ShortName>7. Transactions With General Partner and Affiliates: Unpaid Administration and Additional Administration Fees (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>000440 - Disclosure - 7. Transactions With General Partner and Affiliates: Chestnut Park property management services (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_Disclosure7TransactionsWithGeneralPartnerAndAffiliatesChestnutParkPropertyManagementServicesDetails</Role>
      <ShortName>7. Transactions With General Partner and Affiliates: Chestnut Park property management services (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>000450 - Disclosure - 8. Taxable Income (Loss): Reconciliation of Financial Statement Net Income (Loss) to the Tax Return Income (Loss) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_Disclosure8TaxableIncomeLossReconciliationOfFinancialStatementNetIncomeLossToTheTaxReturnIncomeLossDetails</Role>
      <ShortName>8. Taxable Income (Loss): Reconciliation of Financial Statement Net Income (Loss) to the Tax Return Income (Loss) (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>000460 - Disclosure - 8. Taxable Income (Loss): Differences Between Investment in Local Partnerships for Tax and Financial Reporting Purposes (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://atciiixbrl.com/20130330/role/idr_Disclosure8TaxableIncomeLossDifferencesBetweenInvestmentInLocalPartnershipsForTaxAndFinancialReportingPurposesDetails</Role>
      <ShortName>8. Taxable Income (Loss): Differences Between Investment in Local Partnerships for Tax and Financial Reporting Purposes (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 'Mar. 30, 2011'</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Mar. 30, 2010'</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: 000070 - Statement - STATEMENTS OF CASH FLOWS</Log>
    <Log type="Info">Process Flow-Through: 000080 - Statement - STATEMENTS OF CASH FLOWS - CONTINUED</Log>
  </Logs>
  <InputFiles>
    <File>atciiix-20130330.xml</File>
    <File>atciiix-20130330.xsd</File>
    <File>atciiix-20130330_cal.xml</File>
    <File>atciiix-20130330_def.xml</File>
    <File>atciiix-20130330_lab.xml</File>
    <File>atciiix-20130330_pre.xml</File>
  </InputFiles>
  <SupplementalFiles />
  <BaseTaxonomies />
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
