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<!-- EDGAR Online I-Metrix Xcelerate Instance Document, based on XBRL 2.1  http://www.edgar-online.com/ -->
<!-- Version:  6.19.4 -->
<!-- Round: 2 -->
<!-- Creation date: 2012-10-18T11:24:46Z -->
<!-- Copyright (c) 2005-2011 EDGAR Online, Inc. All Rights Reserved. -->
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  <dei:DocumentType contextRef="eol_0001474365-12-000122_STD_1_20121001_0" id="id_303144_2A6CBE55-6861-48CE-A9D4-F0596148EDE5_1_3">485BPOS</dei:DocumentType>
  <dei:DocumentPeriodEndDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0" id="id_303144_2A6CBE55-6861-48CE-A9D4-F0596148EDE5_1_5">2012-07-31</dei:DocumentPeriodEndDate>
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  <dei:DocumentEffectiveDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0" id="id_303144_2A6CBE55-6861-48CE-A9D4-F0596148EDE5_1_1">2012-10-01</dei:DocumentEffectiveDate>
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  <dei:AmendmentFlag contextRef="eol_0001474365-12-000122_STD_1_20121001_0" id="id_303144_2A6CBE55-6861-48CE-A9D4-F0596148EDE5_1_4">false</dei:AmendmentFlag>
  <dei:DocumentCreationDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0" id="id_303144_2A6CBE55-6861-48CE-A9D4-F0596148EDE5_1_0">2012-09-28</dei:DocumentCreationDate>
  <rr:ProspectusDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0" id="id_303144_2A6CBE55-6861-48CE-A9D4-F0596148EDE5_1_2">2012-10-01</rr:ProspectusDate>
  <rr:PortfolioTurnoverTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_26">&lt;tt&gt;The fund pays transaction costs, such as commissions, when it buys and sells &lt;br /&gt;securities (or "turns over" its portfolio). A higher portfolio turnover rate &lt;br /&gt;may indicate higher transaction costs and may result in higher taxes when fund &lt;br /&gt;shares are held in a taxable account. These costs, which are not reflected in &lt;br /&gt;annual fund operating expenses or in the example, affect the fund&apos;s investment &lt;br /&gt;results. During the most recent fiscal year, the fund&apos;s portfolio turnover rate &lt;br /&gt;was 14% of the average value of its portfolio.&lt;/tt&gt;</rr:PortfolioTurnoverTextBlock>
  <rr:ExpenseExampleWithRedemptionTableTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_93">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/ExpenseExample_S000845376Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:ExpenseExampleWithRedemptionTableTextBlock>
  <rr:BarChartTableTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_95">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/BarChartData_S000845376Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:BarChartTableTextBlock>
  <rr:ObjectivePrimaryTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_3">&lt;tt&gt;The fund&apos;s investment objective is to provide you with current income exempt&lt;br /&gt;from regular federal income tax, consistent with its maturity and quality&lt;br /&gt;standards described in the prospectus, and to preserve capital.&lt;/tt&gt;</rr:ObjectivePrimaryTextBlock>
  <rr:ExpenseExampleNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_19">&lt;tt&gt;This example is intended to help you compare the cost of investing in&lt;br /&gt;the fund with the cost of investing in other mutual funds.&lt;br /&gt; &lt;br /&gt;The example assumes that you invest $10,000 in the fund for the time periods&lt;br /&gt;indicated and then redeem all of your shares at the end of those periods. The&lt;br /&gt;example also assumes that your investment has a 5% return each year and that the&lt;br /&gt;fund&apos;s operating expenses remain the same.&lt;/tt&gt;</rr:ExpenseExampleNarrativeTextBlock>
  <rr:StrategyNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_29">&lt;tt&gt;Under normal circumstances, the fund will invest at least 80% of its assets in,&lt;br /&gt;or derive at least 80% of its income from, securities that are exempt from&lt;br /&gt;regular federal income tax and that do not subject you to federal alternative&lt;br /&gt;minimum tax. The fund may also invest up to 20% of its assets in securities that&lt;br /&gt;may subject you to federal alternative minimum tax. The fund invests primarily&lt;br /&gt;in municipal bonds rated AA- or better or Aa3 or better by Nationally Recognized&lt;br /&gt;Statistical Rating Organizations designated by the fund&apos;s investment adviser, or&lt;br /&gt;unrated but determined by the fund&apos;s investment adviser to be of equivalent&lt;br /&gt;quality. The fund may also invest in municipal bonds rated A- or better or A3 or&lt;br /&gt;better by Nationally Recognized Statistical Rating Organizations designated by&lt;br /&gt;the fund&apos;s investment adviser or unrated but determined by the fund&apos;s investment&lt;br /&gt;adviser to be of equivalent quality. Some of the securities in which the fund&lt;br /&gt;invests may have credit and liquidity support features, including guarantees and&lt;br /&gt;letters of credit. The fund&apos;s aggregate portfolio will have a dollar-weighted&lt;br /&gt;average maturity no greater than three years.&lt;br /&gt; &lt;br /&gt;In addition, the fund may invest significantly in municipal obligations of&lt;br /&gt;issuers in the same state, or engaged in the same types of projects or&lt;br /&gt;industries.&lt;br /&gt; &lt;br /&gt;The investment adviser uses a system of multiple portfolio counselors in&lt;br /&gt;managing the fund&apos;s assets. Under this approach, the portfolio of the fund is&lt;br /&gt;divided into segments managed by individual counselors who decide how their&lt;br /&gt;respective segments will be invested.&lt;br /&gt; &lt;br /&gt;The fund relies on the professional judgment of its investment adviser to make&lt;br /&gt;decisions about the fund&apos;s portfolio investments. The basic investment philosophy &lt;br /&gt;of the investment adviser is to seek to invest in attractively priced securities &lt;br /&gt;that, in its opinion, represent good, long-term investment opportunities. The &lt;br /&gt;investment adviser believes that an important way to accomplish this is by analyzing &lt;br /&gt;various factors, which may include the credit strength of the issuer, prices of &lt;br /&gt;similar securities issued by comparable issuers, anticipated changes in interest &lt;br /&gt;rates, general market conditions and other factors pertinent to the particular &lt;br /&gt;security being evaluated. Securities may be sold when the investment adviser &lt;br /&gt;believes that they no longer represent relatively attractive investment &lt;br /&gt;opportunities.&lt;/tt&gt;</rr:StrategyNarrativeTextBlock>
  <rr:RiskReturnHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_1">American Funds Short-Term Tax-Exempt Bond Fund&#174;</rr:RiskReturnHeading>
  <rr:ExpenseBreakpointDiscounts contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_6">You may qualify for sales charge discounts if you and your family invest, or agree
to invest in the future, at least $500,000 in American Funds.</rr:ExpenseBreakpointDiscounts>
  <rr:ExpenseExampleHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_18">Example</rr:ExpenseExampleHeading>
  <rr:PerformanceTableUsesHighestFederalRate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_61">After-tax returns are calculated using the highest individual federal
income tax rates in effect during each year of the periods shown and
do not reflect the impact of state and local taxes.</rr:PerformanceTableUsesHighestFederalRate>
  <rr:ObjectiveHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_2">Investment objective</rr:ObjectiveHeading>
  <rr:PerformancePastDoesNotIndicateFuture contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_39">Past investment results (before and after taxes) are not predictive of future investment results.</rr:PerformancePastDoesNotIndicateFuture>
  <rr:PerformanceAdditionalMarketIndex contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_37">The Lipper Short Municipal Debt Funds Average includes the fund and other funds that disclose investment objectives and/or strategies reasonably comparable to the fund&apos;s objective and/or strategies. The results below and on the following page for certain periods shown reflect the operation of the fund as a money market fund prior to its conversion on August 7, 2009 to a short-term tax-exempt bond fund.</rr:PerformanceAdditionalMarketIndex>
  <rr:RiskLoseMoney contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_32">You may lose money by investing in the fund.</rr:RiskLoseMoney>
  <rr:RiskHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_30">Principal risks</rr:RiskHeading>
  <rr:ShareholderFeesCaption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_8">Shareholder fees (fees paid directly from your investment)</rr:ShareholderFeesCaption>
  <rr:ExpenseExampleByYearCaption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_20">Although your actual costs may be higher or lower, based on these assumptions your costs would be:</rr:ExpenseExampleByYearCaption>
  <rr:PortfolioTurnoverRate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" unitRef="pure" decimals="2" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_27">0.14</rr:PortfolioTurnoverRate>
  <rr:PerformanceTableNotRelevantToTaxDeferred contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_62">Your actual after-tax returns depend on your individual tax situation and likely will differ from the results shown above.</rr:PerformanceTableNotRelevantToTaxDeferred>
  <rr:BarChartHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_40">Calender year total returns for Class A shares (Results do not include a
sales charge; if a sales charge were included, results would be lower.)</rr:BarChartHeading>
  <rr:BarChartDoesNotReflectSalesLoads contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_42">(Results do not include a sales charge; if a sales charge were included, results would be lower.)</rr:BarChartDoesNotReflectSalesLoads>
  <rr:BarChartAndPerformanceTableHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_34">Investment results</rr:BarChartAndPerformanceTableHeading>
  <rr:ExpenseBreakpointMinimumInvestmentRequiredAmount contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" unitRef="iso4217_USD" decimals="0" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_7">500000</rr:ExpenseBreakpointMinimumInvestmentRequiredAmount>
  <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_36">The following bar chart shows how the fund&apos;s investment results have
varied from year to year, and the following table shows how the fund&apos;s
average annual total returns for various periods compare with different
broad measures of market results.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
  <rr:BarChartClosingTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_59">&lt;tt&gt;Highest/Lowest quarterly returns during this period were:&lt;br /&gt;&lt;br /&gt;Highest&amp;#xA0;&amp;#xA0;1.29% (quarter ended September 30, 2010)&lt;br /&gt;&lt;br /&gt;Lowest&amp;#xA0;&amp;#xA0;-0.76% (quarter ended December 31, 2010)&lt;/tt&gt;</rr:BarChartClosingTextBlock>
  <rr:OperatingExpensesCaption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_13">Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)</rr:OperatingExpensesCaption>
  <rr:AverageAnnualReturnCaption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_64">Average annual total returns For the periods ended December 31, 2011 (with maximum sales charge): </rr:AverageAnnualReturnCaption>
  <rr:BarChartNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_41">&lt;tt&gt;The following bar chart shows how the fund&apos;s investment results have varied from&lt;br /&gt;year to year, and the following table shows how the fund&apos;s average annual total&lt;br /&gt;returns for various periods compare with different broad measures of market&lt;br /&gt;results.&lt;/tt&gt;</rr:BarChartNarrativeTextBlock>
  <rr:PortfolioTurnoverHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_25">Portfolio turnover</rr:PortfolioTurnoverHeading>
  <rr:RiskNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_31">&lt;tt&gt;This section describes the principal risks associated with the fund&apos;s principal&lt;br /&gt;investment strategies. You may lose money by investing in the fund. The&lt;br /&gt;likelihood of loss may be greater if you invest for a shorter period of time.&lt;br /&gt; &lt;br /&gt;Market conditions -- The prices of, and the income generated by, the securities&lt;br /&gt;held by the fund may decline due to market conditions and other factors,&lt;br /&gt;including those directly involving the issuers of securities held by the fund.&lt;br /&gt; &lt;br /&gt;Investing in bonds -- Rising interest rates will generally cause the prices of&lt;br /&gt;bonds and other debt securities to fall. Longer maturity debt securities may be&lt;br /&gt;subject to greater price fluctuations than shorter maturity debt securities. In&lt;br /&gt;addition, falling interest rates may cause an issuer to redeem, call or refinance &lt;br /&gt;a security before its stated maturity, which may result in the fund having to &lt;br /&gt;reinvest the proceeds in lower yielding securities.&lt;br /&gt; &lt;br /&gt;Bonds and other debt securities are subject to credit risk, which is the&lt;br /&gt;possibility that the credit strength of an issuer will weaken and/or an issuer&lt;br /&gt;of a debt security will fail to make timely payments of principal or interest&lt;br /&gt;and the security will go into default.&lt;br /&gt; &lt;br /&gt;Thinly traded securities -- There may be little trading in the secondary market&lt;br /&gt;for particular bonds or other debt securities, which may make them more&lt;br /&gt;difficult to value, acquire or sell.&lt;br /&gt; &lt;br /&gt;Credit and liquidity support -- Changes in the credit quality of banks and&lt;br /&gt;financial institutions providing credit and liquidity support features with&lt;br /&gt;respect to securities held by the fund could cause the values of these&lt;br /&gt;securities to decline.&lt;br /&gt; &lt;br /&gt;Investing in similar municipal bonds -- Investing significantly in municipal&lt;br /&gt;obligations of issuers in the same state or backed by revenues of similar &lt;br /&gt;types of projects or industries may make the fund more susceptible to certain&lt;br /&gt;economic, political or regulatory occurrences. As a result, the potential for&lt;br /&gt;fluctuations in the fund&apos;s share price may increase.&lt;br /&gt; &lt;br /&gt;Management -- The investment adviser to the fund actively manages the fund&apos;s&lt;br /&gt;investments. Consequently, the fund is subject to the risk that the methods &lt;br /&gt;and analyses employed by the investment adviser in this process may not produce &lt;br /&gt;the desired results. This could cause the fund to lose value or its investment&lt;br /&gt;results to lag relevant benchmarks or other funds with similar objectives.&lt;br /&gt; &lt;br /&gt;Your investment in the fund is not a bank deposit and is not insured or&lt;br /&gt;guaranteed by the Federal Deposit Insurance Corporation or any other&lt;br /&gt;governmental agency, entity or person. You should consider how this fund &lt;br /&gt;fits into your overall investment program.&lt;/tt&gt;</rr:RiskNarrativeTextBlock>
  <rr:ExpenseHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_4">Fees and expenses of the fund</rr:ExpenseHeading>
  <rr:PerformanceTableOneClassOfAfterTaxShown contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_63">After-tax returns are shown only for Class A shares;</rr:PerformanceTableOneClassOfAfterTaxShown>
  <rr:StrategyHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_28">Principal investment strategies</rr:StrategyHeading>
  <rr:PerformanceAvailabilityWebSiteAddress contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_38">americanfunds.com</rr:PerformanceAvailabilityWebSiteAddress>
  <rr:PerformanceNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_35">&lt;tt&gt;The following bar chart shows how the fund&apos;s investment results have varied from&lt;br /&gt;year to year, and the following table shows how the fund&apos;s average annual total&lt;br /&gt;returns for various periods compare with different broad measures of market&lt;br /&gt;results. This information provides some indication of the risks of investing in&lt;br /&gt;the fund. The Lipper Short Municipal Debt Funds Average includes the fund and&lt;br /&gt;other funds that disclose investment objectives and/or strategies reasonably&lt;br /&gt;comparable to the fund&apos;s objective and/or strategies. The results below and on&lt;br /&gt;the following page for certain periods shown reflect the operation of the fund&lt;br /&gt;as a money market fund prior to its conversion on August 7, 2009 to a short-term&lt;br /&gt;tax-exempt bond fund. Accordingly, results for such periods are not representative &lt;br /&gt;of the fund&apos;s results had the fund been operated as a short-term tax-exempt bond &lt;br /&gt;fund during the entire period. Past investment results (before and after taxes) &lt;br /&gt;are not predictive of future investment results. Updated information on the fund&apos;s &lt;br /&gt;investment results can be obtained by visiting americanfunds.com.&lt;/tt&gt;</rr:PerformanceNarrativeTextBlock>
  <rr:ExpenseNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_5">&lt;tt&gt;This table describes the fees and expenses that you may pay if you buy and hold&lt;br /&gt;shares of the fund. You may qualify for sales charge discounts if you and your&lt;br /&gt;family invest, or agree to invest in the future, at least $500,000 in American&lt;br /&gt;Funds. More information about these and other discounts is available from your&lt;br /&gt;financial professional and in the "Sales charge reductions and waivers" section&lt;br /&gt;on page 48 of the prospectus and on page 70 of the fund&apos;s statement of&lt;br /&gt;additional information.&lt;/tt&gt;</rr:ExpenseNarrativeTextBlock>
  <rr:AnnualFundOperatingExpensesTableTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_94">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/OperatingExpensesData_S000845376Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:AnnualFundOperatingExpensesTableTextBlock>
  <rr:PerformanceTableTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_96">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/PerformanceTableData_S000845376Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * column rr_PerformanceMeasureAxis compact * row primary compact *  ~&lt;/div&gt;</rr:PerformanceTableTextBlock>
  <rr:PerformanceTableNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_60">&lt;tt&gt;After-tax returns are shown only for Class A shares; after-tax returns for other&lt;br /&gt;share classes will vary. After-tax returns are calculated using the highest&lt;br /&gt;individual federal income tax rates in effect during each year of the periods&lt;br /&gt;shown and do not reflect the impact of state and local taxes. Your actual&lt;br /&gt;after-tax returns depend on your individual tax situation and likely will differ&lt;br /&gt;from the results shown above.&lt;/tt&gt;</rr:PerformanceTableNarrativeTextBlock>
  <rr:RiskNotInsuredDepositoryInstitution contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_33">Your investment in the fund is not a bank deposit and is not insured or guaranteed by
the Federal Deposit Insurance Corporation or any other governmental agency, entity
or person.</rr:RiskNotInsuredDepositoryInstitution>
  <rr:PerformanceTableFootnotesTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_91">&lt;tt&gt;Class A annualized 30-day yield at July 31, 2012: 0.36%&lt;br /&gt;(For current yield information, please call American&amp;#xA0;&amp;#xA0;&amp;#xA0;&lt;br /&gt;FundsLine&amp;#xAE; at 800/325-3590.)&lt;/tt&gt;</rr:PerformanceTableFootnotesTextBlock>
  <rr:ShareholderFeesTableTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1001_92">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/ShareholderFeesData_S000845376Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:ShareholderFeesTableTextBlock>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602440x-9984081" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_2001_84">Lipper Short Municipal Debt Funds Average (reflects no deductions for sales charges, account fees or taxes)</rr:AverageAnnualReturnLabel>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602440x-9984081" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_2001_85">0.0240</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602440x-9984081" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_2001_86">0.0252</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602440x-9984081" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_2001_87">0.0250</rr:AverageAnnualReturnYear10>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602440x-9984082" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_3001_81">Barclays Municipal Short 1-5 Years Index (reflects no deductions for sales charges, account fees, expenses or taxes)</rr:AverageAnnualReturnLabel>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602440x-9984082" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_3001_82">0.0345</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602440x-9984082" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_3001_83">0.0422</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602440x602366_602488x-9981406" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_4002_76">Share class A - After taxes on distributions and sale of fund shares</rr:AverageAnnualReturnLabel>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602440x602366_602488x-9981406" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_4002_77">0.0045</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602440x602366_602488x-9981406" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_4002_78">0.0142</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602440x602366_602488x-9981406" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_4002_79">0.0140</rr:AverageAnnualReturnYear10>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602440x602366_602488x-9981406" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_4002_80">1989-10-24</rr:AverageAnnualReturnInceptionDate>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602440x602395_602488x-9981406" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_5002_71">Share class A - After taxes on distributions</rr:AverageAnnualReturnLabel>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602440x602395_602488x-9981406" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_5002_72">0.0005</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602440x602395_602488x-9981406" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_5002_73">0.0142</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602440x602395_602488x-9981406" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_5002_74">0.0140</rr:AverageAnnualReturnYear10>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602440x602395_602488x-9981406" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_5002_75">1989-10-24</rr:AverageAnnualReturnInceptionDate>
  <dei:TradingSymbol contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981398" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1004_0">ASTFX</dei:TradingSymbol>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981398" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1004_9">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981398" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1004_65">Share class F-2 - Before taxes</rr:AverageAnnualReturnLabel>
  <rr:ExpenseExampleYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981398" unitRef="iso4217_USD" decimals="0" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1004_21">53</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981398" unitRef="iso4217_USD" decimals="0" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1004_22">167</rr:ExpenseExampleYear03>
  <rr:ExpenseExampleYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981398" unitRef="iso4217_USD" decimals="0" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1004_24">653</rr:ExpenseExampleYear10>
  <rr:RedemptionFeeOverRedemption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981398" unitRef="pure" decimals="2" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1004_12">0.00</rr:RedemptionFeeOverRedemption>
  <rr:ExpenseExampleYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981398" unitRef="iso4217_USD" decimals="0" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1004_23">291</rr:ExpenseExampleYear05>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981398" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1004_66">0.0268</rr:AverageAnnualReturnYear01>
  <rr:OtherExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981398" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1004_16">0.0014</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981398" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1004_14">0.0038</rr:ManagementFeesOverAssets>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981398" unitRef="pure" decimals="2" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1004_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981398" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1004_15">0.0000</rr:DistributionAndService12b1FeesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981398" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1004_17">0.0052</rr:ExpensesOverAssets>
  <rr:AverageAnnualReturnSinceInception contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981398" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1004_69">0.0233</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981398" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1004_70">2009-08-12</rr:AverageAnnualReturnInceptionDate>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981398" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1004_10">0.0000</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981399" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1003_0">FSTTX</dei:TradingSymbol>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981399" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1003_9">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981399" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1003_65">Share class F-1 - Before taxes</rr:AverageAnnualReturnLabel>
  <rr:ExpenseExampleYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981399" unitRef="iso4217_USD" decimals="0" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1003_21">80</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981399" unitRef="iso4217_USD" decimals="0" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1003_22">249</rr:ExpenseExampleYear03>
  <rr:ExpenseExampleYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981399" unitRef="iso4217_USD" decimals="0" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1003_24">966</rr:ExpenseExampleYear10>
  <rr:RedemptionFeeOverRedemption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981399" unitRef="pure" decimals="2" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1003_12">0.00</rr:RedemptionFeeOverRedemption>
  <rr:ExpenseExampleYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981399" unitRef="iso4217_USD" decimals="0" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1003_23">433</rr:ExpenseExampleYear05>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981399" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1003_66">0.0243</rr:AverageAnnualReturnYear01>
  <rr:OtherExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981399" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1003_16">0.0015</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981399" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1003_14">0.0038</rr:ManagementFeesOverAssets>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981399" unitRef="pure" decimals="2" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1003_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981399" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1003_15">0.0025</rr:DistributionAndService12b1FeesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981399" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1003_17">0.0078</rr:ExpensesOverAssets>
  <rr:AverageAnnualReturnSinceInception contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981399" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1003_69">0.0213</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981399" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1003_70">2009-08-27</rr:AverageAnnualReturnInceptionDate>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981399" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1003_10">0.0000</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981406" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1002_0">ASTEX</dei:TradingSymbol>
  <rr:AnnualReturn2002 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981406" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1002_43">0.0089</rr:AnnualReturn2002>
  <rr:LowestQuarterlyReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981406" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1002_56">Lowest</rr:LowestQuarterlyReturnLabel>
  <rr:HighestQuarterlyReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981406" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1002_53">Highest</rr:HighestQuarterlyReturnLabel>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981406" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1002_9">0.0250</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:ThirtyDayYieldPhone contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981406" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1002_89">800/325-3590</rr:ThirtyDayYieldPhone>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981406" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1002_65">Share class A - Before taxes</rr:AverageAnnualReturnLabel>
  <rr:ExpenseExampleYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981406" unitRef="iso4217_USD" decimals="0" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1002_21">309</rr:ExpenseExampleYear01>
  <rr:BarChartHighestQuarterlyReturnDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981406" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1002_55">2010-09-30</rr:BarChartHighestQuarterlyReturnDate>
  <rr:ThirtyDayYield contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981406" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1002_90">0.0036</rr:ThirtyDayYield>
  <rr:ExpenseExampleYear03 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981406" unitRef="iso4217_USD" decimals="0" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1002_22">434</rr:ExpenseExampleYear03>
  <rr:BarChartLowestQuarterlyReturn contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981406" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1002_57">-0.0076</rr:BarChartLowestQuarterlyReturn>
  <rr:AnnualReturn2004 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981406" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1002_45">0.0066</rr:AnnualReturn2004>
  <rr:AnnualReturn2010 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981406" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1002_51">0.0190</rr:AnnualReturn2010>
  <rr:ExpenseExampleYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981406" unitRef="iso4217_USD" decimals="0" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1002_24">969</rr:ExpenseExampleYear10>
  <rr:RedemptionFeeOverRedemption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981406" unitRef="pure" decimals="2" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1002_12">0.00</rr:RedemptionFeeOverRedemption>
  <rr:ExpenseExampleYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981406" unitRef="iso4217_USD" decimals="0" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1002_23">571</rr:ExpenseExampleYear05>
  <rr:AnnualReturn2007 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981406" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1002_48">0.0318</rr:AnnualReturn2007>
  <rr:BarChartHighestQuarterlyReturn contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981406" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1002_54">0.0129</rr:BarChartHighestQuarterlyReturn>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981406" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1002_66">0.0005</rr:AverageAnnualReturnYear01>
  <rr:OtherExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981406" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1002_16">0.0006</rr:OtherExpensesOverAssets>
  <rr:AnnualReturn2008 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981406" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1002_49">0.0154</rr:AnnualReturn2008>
  <rr:ManagementFeesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981406" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1002_14">0.0038</rr:ManagementFeesOverAssets>
  <rr:BarChartLowestQuarterlyReturnDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981406" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1002_58">2010-12-31</rr:BarChartLowestQuarterlyReturnDate>
  <rr:AnnualReturn2009 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981406" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1002_50">0.0088</rr:AnnualReturn2009>
  <rr:AverageAnnualReturnYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981406" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1002_67">0.0142</rr:AverageAnnualReturnYear05>
  <rr:AnnualReturn2005 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981406" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1002_46">0.0193</rr:AnnualReturn2005>
  <rr:AnnualReturn2011 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981406" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1002_52">0.0262</rr:AnnualReturn2011>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981406" unitRef="pure" decimals="2" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1002_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:AnnualReturn2003 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981406" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1002_44">0.0046</rr:AnnualReturn2003>
  <rr:ThirtyDayYieldCaption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981406" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1002_88">Class A annualized 30-day yield at July 31, 2012:</rr:ThirtyDayYieldCaption>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981406" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1002_15">0.0015</rr:DistributionAndService12b1FeesOverAssets>
  <rr:AverageAnnualReturnYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981406" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1002_68">0.0140</rr:AverageAnnualReturnYear10>
  <rr:ExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981406" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1002_17">0.0059</rr:ExpensesOverAssets>
  <rr:AnnualReturn2006 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981406" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1002_47">0.0295</rr:AnnualReturn2006>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981406" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1002_70">1989-10-24</rr:AverageAnnualReturnInceptionDate>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981386_602238x-9981380_602488x-9981406" unitRef="pure" decimals="4" id="id_303144_3FC27CD6-D3CD-4EC3-909C-DB7D68855AA8_1002_10">0.0100</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <rr:PortfolioTurnoverTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_35">&lt;tt&gt;The fund pays transaction costs, such as commissions, when it buys and sells &lt;br /&gt;securities (or "turns over" its portfolio). A higher portfolio turnover rate &lt;br /&gt;may indicate higher transaction costs and may result in higher taxes when fund &lt;br /&gt;shares are held in a taxable account. These costs, which are not reflected in &lt;br /&gt;annual fund operating expenses or in the example, affect the fund&apos;s investment &lt;br /&gt;results. During the most recent fiscal year, the fund&apos;s portfolio turnover rate &lt;br /&gt;was 15% of the average value of its portfolio.&lt;/tt&gt;</rr:PortfolioTurnoverTextBlock>
  <rr:ExpenseExampleWithRedemptionTableTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_94">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/ExpenseExample_S000030189Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:ExpenseExampleWithRedemptionTableTextBlock>
  <rr:BarChartTableTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_92">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/BarChartData_S000030189Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:BarChartTableTextBlock>
  <rr:ObjectivePrimaryTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_3">&lt;tt&gt;The fund&apos;s primary investment objective is to provide you with a high level of&lt;br /&gt;current income exempt from regular federal, New York state and New York City&lt;br /&gt;income taxes.&lt;/tt&gt;</rr:ObjectivePrimaryTextBlock>
  <rr:ExpenseExampleNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_23">&lt;tt&gt;This example is intended to help you compare the cost of investing in&lt;br /&gt;the fund with the cost of investing in other mutual funds.&lt;br /&gt; &lt;br /&gt;The example assumes that you invest $10,000 in the fund for the time periods&lt;br /&gt;indicated and then redeem all of your shares at the end of those periods. The&lt;br /&gt;example also assumes that your investment has a 5% return each year and that the&lt;br /&gt;fund&apos;s operating expenses remain the same.&lt;/tt&gt;</rr:ExpenseExampleNarrativeTextBlock>
  <rr:StrategyNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_38">&lt;tt&gt;The fund seeks to achieve its objectives by primarily investing in municipal&lt;br /&gt;bonds issued by the state of New York and its agencies and municipalities.&lt;br /&gt;Consistent with the fund&apos;s objectives, the fund may also invest in municipal&lt;br /&gt;securities that are issued by jurisdictions outside New York. Municipal bonds&lt;br /&gt;are debt obligations generally issued to obtain funds for various public&lt;br /&gt;purposes, including the construction of public facilities.&lt;br /&gt; &lt;br /&gt;Under normal circumstances, the fund will invest at least 80% of its assets in,&lt;br /&gt;or derive at least 80% of its income from, securities that are exempt from&lt;br /&gt;regular federal, New York state and New York City income taxes and that do not&lt;br /&gt;subject you to federal alternative minimum tax. The fund may also invest up to&lt;br /&gt;20% of its assets in securities that subject you to federal alternative minimum&lt;br /&gt;tax. The fund is intended primarily for taxable residents of New York.&lt;br /&gt; &lt;br /&gt;The fund will invest primarily in debt securities rated BBB- or better or Baa3&lt;br /&gt;or better by Nationally Recognized Statistical Rating Organizations designated&lt;br /&gt;by the fund&apos;s investment adviser, or unrated but determined by the fund&apos;s&lt;br /&gt;investment adviser to be of equivalent quality. The fund also may invest in debt&lt;br /&gt;securities rated BB+ or below and Ba1 or below by Nationally Recognized&lt;br /&gt;Statistical Rating Organizations designated by the fund&apos;s investment adviser, or&lt;br /&gt;unrated but determined by the fund&apos;s investment adviser to be of equivalent&lt;br /&gt;quality. Such securities are sometimes referred to as "junk bonds." Some of the&lt;br /&gt;securities held by the fund may have credit and liquidity support features,&lt;br /&gt;including guarantees and letters of credit.&lt;br /&gt; &lt;br /&gt;The investment adviser uses a system of multiple portfolio counselors in&lt;br /&gt;managing the fund&apos;s assets. Under this approach, the portfolio of the fund is&lt;br /&gt;divided into segments managed by individual counselors who decide how their&lt;br /&gt;respective segments will be invested.&lt;br /&gt; &lt;br /&gt;The fund relies on the professional judgment of its investment adviser to make&lt;br /&gt;decisions about the fund&apos;s portfolio investments. The basic investment&lt;br /&gt;philosophy of the investment adviser is to seek to invest in attractively priced&lt;br /&gt;securities that, in its opinion, represent good, long-term investment&lt;br /&gt;opportunities. The investment adviser believes that an important way to&lt;br /&gt;accomplish this is by analyzing various factors, which may include the credit&lt;br /&gt;strength of the issuer, prices of similar securities issued by comparable&lt;br /&gt;issuers, anticipated changes in interest rates, general market conditions and&lt;br /&gt;other factors pertinent to the particular security being evaluated. Securities&lt;br /&gt;may be sold when the investment adviser believes that they no longer represent&lt;br /&gt;relatively attractive investment opportunities.&lt;/tt&gt;</rr:StrategyNarrativeTextBlock>
  <rr:RiskReturnHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_1">American Funds Tax-Exempt Fund of New York&#174;</rr:RiskReturnHeading>
  <rr:ObjectiveSecondaryTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_4">&lt;tt&gt;Its secondary objective is preservation of capital.&lt;/tt&gt;</rr:ObjectiveSecondaryTextBlock>
  <rr:ExpenseBreakpointDiscounts contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_7">You may qualify for sales charge discounts if you and your family invest, or
agree to invest in the future, at least $100,000 in American Funds.</rr:ExpenseBreakpointDiscounts>
  <rr:ExpenseExampleHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_22">Example</rr:ExpenseExampleHeading>
  <rr:PerformanceTableUsesHighestFederalRate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_61">After-tax returns are calculated using the highest individual federal income tax
rates in effect during each year of the periods shown and do not reflect the impact
of state and local taxes.</rr:PerformanceTableUsesHighestFederalRate>
  <rr:ObjectiveHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_2">Investment objectives</rr:ObjectiveHeading>
  <rr:PerformancePastDoesNotIndicateFuture contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_48">Past investment results (before and after taxes) are not predictive of future investment results.</rr:PerformancePastDoesNotIndicateFuture>
  <rr:PerformanceAdditionalMarketIndex contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_46">The Lipper New York Municipal Debt Funds Average includes the fund and other funds that
disclose investment objectives and/or strategies reasonably comparable to the fund&apos;s
objective and/or strategies.</rr:PerformanceAdditionalMarketIndex>
  <rr:RiskLoseMoney contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_41">You may lose money by investing in the fund.</rr:RiskLoseMoney>
  <rr:RiskHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_39">Principal risks</rr:RiskHeading>
  <rr:ShareholderFeesCaption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_9">Shareholder fees (fees paid directly from your investment)</rr:ShareholderFeesCaption>
  <rr:ExpenseExampleByYearCaption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_24">Although your actual costs may be higher or lower, based on these assumptions your costs would be:</rr:ExpenseExampleByYearCaption>
  <rr:PortfolioTurnoverRate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" unitRef="pure" decimals="2" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_36">0.15</rr:PortfolioTurnoverRate>
  <rr:PerformanceTableNotRelevantToTaxDeferred contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_62">Your actual after-tax returns depend on your individual tax situation and likely will differ from the results shown above.</rr:PerformanceTableNotRelevantToTaxDeferred>
  <rr:BarChartHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_49">Calendar year total returns for Class A shares (Results do not include a sales charge; if a sales charge were included, results would be lower.)</rr:BarChartHeading>
  <rr:BarChartDoesNotReflectSalesLoads contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_51">(Results do not include a sales charge; if a sales charge were included, results would be lower.)</rr:BarChartDoesNotReflectSalesLoads>
  <rr:BarChartAndPerformanceTableHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_43">Investment results</rr:BarChartAndPerformanceTableHeading>
  <rr:ExpenseBreakpointMinimumInvestmentRequiredAmount contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" unitRef="iso4217_USD" decimals="0" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_8">100000</rr:ExpenseBreakpointMinimumInvestmentRequiredAmount>
  <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_45">The following bar chart shows the fund&apos;s investment results for its first full
calendar year of operations, and the following table shows the fund&apos;s average
annual total returns for various periods compare with different broad measures
of market results.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
  <rr:BarChartClosingTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_59">&lt;tt&gt;Highest/Lowest quarterly results during the period were:&lt;br /&gt;&lt;br /&gt;Highest 3.99% (quarter ended September 30, 2011)&lt;br /&gt;&lt;br /&gt;Lowest 0.62% (quarter ended March 31, 2011)&lt;br /&gt;&lt;br /&gt;The fund&apos;s total return for the six months ended June 30, 2012,&lt;br /&gt;was 4.49%.&lt;/tt&gt;</rr:BarChartClosingTextBlock>
  <rr:OperatingExpensesCaption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_14">Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment) </rr:OperatingExpensesCaption>
  <rr:AverageAnnualReturnCaption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_64">Average annual total returns For the periods ended December 31, 2011 (with maximum sales charge):</rr:AverageAnnualReturnCaption>
  <rr:BarChartNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_50">&lt;tt&gt;The following bar chart shows the fund&apos;s investment results for its first full&lt;br /&gt;calendar year of operations, and the following table shows the fund&apos;s average&lt;br /&gt;annual total returns for various periods compare with different broad measures&lt;br /&gt;of market results.&lt;/tt&gt;</rr:BarChartNarrativeTextBlock>
  <rr:PortfolioTurnoverHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_34">Portfolio turnover</rr:PortfolioTurnoverHeading>
  <rr:RiskNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_40">&lt;tt&gt;This section describes the principal risks associated with the fund&apos;s principal&lt;br /&gt;investment strategies. You may lose money by investing in the fund. The&lt;br /&gt;likelihood of loss may be greater if you invest for a shorter period of time.&lt;br /&gt; &lt;br /&gt;Risks of investing in municipal bonds of issuers within the state of New York -&lt;br /&gt;Because the fund invests primarily in securities of issuers within the state of&lt;br /&gt;New York, the fund is more susceptible to factors adversely affecting issuers of&lt;br /&gt;New York securities than a comparable municipal bond mutual fund that does not&lt;br /&gt;concentrate in a single state. For example, such factors may include political&lt;br /&gt;policy changes, tax base erosion, state constitutional limits on tax increases,&lt;br /&gt;budget deficits and other financial or economic difficulties, and changes in the&lt;br /&gt;credit ratings assigned to New York&apos;s municipal issuers. New York&apos;s economy and&lt;br /&gt;finances may be especially vulnerable to changes in the performance of the&lt;br /&gt;financial services sector, which historically has been volatile. More detailed&lt;br /&gt;information about the risks of investing in New York municipal securities is&lt;br /&gt;contained in the statement of additional information.&lt;br /&gt; &lt;br /&gt;Market conditions -- The prices of, and the income generated by, the securities&lt;br /&gt;held by the fund may decline due to market conditions and other factors,&lt;br /&gt;including those directly involving the issuers of securities held by the fund.&lt;br /&gt; &lt;br /&gt;Investing in bonds -- Rising interest rates will generally cause the prices of&lt;br /&gt;bonds and other debt securities to fall. Longer maturity debt securities may be&lt;br /&gt;subject to greater price fluctuations than shorter maturity debt securities. In&lt;br /&gt;addition, falling interest rates may cause an issuer to redeem, call or&lt;br /&gt;refinance a security before its stated maturity, which may result in the fund&lt;br /&gt;having to reinvest the proceeds in lower yielding securities.&lt;br /&gt; &lt;br /&gt;Bonds and other debt securities are subject to credit risk, which is the&lt;br /&gt;possibility that the credit strength of an issuer will weaken and/or an issuer&lt;br /&gt;of a debt security will fail to make timely payments of principal or interest&lt;br /&gt;and the security will go into default.&lt;br /&gt; &lt;br /&gt;Thinly traded securities -- There may be little trading in the secondary market&lt;br /&gt;for particular bonds or other debt securities, which may make them more&lt;br /&gt;difficult to value, acquire or sell.&lt;br /&gt; &lt;br /&gt;Credit and liquidity support -- Changes in the credit quality of banks and&lt;br /&gt;financial institutions providing credit and liquidity support features with&lt;br /&gt;respect to securities held by the fund could cause the values of these&lt;br /&gt;securities to decline.&lt;br /&gt;&lt;br /&gt;Investing in lower rated bonds -- Lower rated bonds and other lower rated debt&lt;br /&gt;securities generally have higher rates of interest and involve greater risk of&lt;br /&gt;default or price declines due to changes in the issuer&apos;s creditworthiness than&lt;br /&gt;those of higher quality debt securities. The market prices of these securities&lt;br /&gt;may fluctuate more than the prices of higher quality debt securities and may&lt;br /&gt;decline significantly in periods of general economic difficulty. These risks &lt;br /&gt;may be increased with respect to investments in junk bonds.&lt;br /&gt; &lt;br /&gt;Investing in similar municipal bonds -- Investing significantly in municipal&lt;br /&gt;obligations of issuers in the same state or backed by revenues of similar &lt;br /&gt;types of projects or industries may make the fund more susceptible to certain&lt;br /&gt;economic, political or regulatory occurrences. As a result, the potential for&lt;br /&gt;fluctuations in the fund&apos;s share price may increase.&lt;br /&gt; &lt;br /&gt;Management -- The investment adviser to the fund actively manages the fund&apos;s&lt;br /&gt;investments. Consequently, the fund is subject to the risk that the methods &lt;br /&gt;and analyses employed by the investment adviser in this process may not produce &lt;br /&gt;the desired results. This could cause the fund to lose value or its investment&lt;br /&gt;results to lag relevant benchmarks or other funds with similar objectives.&lt;br /&gt; &lt;br /&gt;Your investment in the fund is not a bank deposit and is not insured or&lt;br /&gt;guaranteed by the Federal Deposit Insurance Corporation or any other&lt;br /&gt;governmental agency, entity or person. You should consider how this fund &lt;br /&gt;fits into your overall investment program.&lt;/tt&gt;</rr:RiskNarrativeTextBlock>
  <rr:ExpenseHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_5">Fees and expenses of the fund</rr:ExpenseHeading>
  <rr:PerformanceTableOneClassOfAfterTaxShown contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_63">After-tax returns are shown only for Class A shares; after-tax returns for other share classes will vary.</rr:PerformanceTableOneClassOfAfterTaxShown>
  <rr:StrategyHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_37">Principal investment strategies</rr:StrategyHeading>
  <rr:PerformanceAvailabilityWebSiteAddress contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_47">americanfunds.com</rr:PerformanceAvailabilityWebSiteAddress>
  <rr:PerformanceNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_44">&lt;tt&gt;The following bar chart shows the fund&apos;s investment results for its first full&lt;br /&gt;calendar year of operations, and the following table shows the fund&apos;s average&lt;br /&gt;annual total returns for various periods compare with different broad measures&lt;br /&gt;of market results. This information provides some indication of the risks of&lt;br /&gt;investing in the fund. The Lipper New York Municipal Debt Funds Average includes&lt;br /&gt;the fund and other funds that disclose investment objectives and/or strategies&lt;br /&gt;reasonably comparable to the fund&apos;s objective and/or strategies. Past investment&lt;br /&gt;results (before and after taxes) are not predictive of future investment results. &lt;br /&gt;Updated information on the fund&apos;s investment results can be obtained by visiting &lt;br /&gt;americanfunds.com.&lt;/tt&gt;</rr:PerformanceNarrativeTextBlock>
  <rr:ExpenseNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_6">&lt;tt&gt;This table describes the fees and expenses that you may pay if you buy and hold&lt;br /&gt;shares of the fund. You may qualify for sales charge discounts if you and your&lt;br /&gt;family invest, or agree to invest in the future, at least $100,000 in American&lt;br /&gt;Funds. More information about these and other discounts is available from your&lt;br /&gt;financial professional and in the "Sales charge reductions and waivers" section&lt;br /&gt;on page 48 of the prospectus and on page 70 of the fund&apos;s statement of&lt;br /&gt;additional information.&lt;/tt&gt;</rr:ExpenseNarrativeTextBlock>
  <rr:AnnualFundOperatingExpensesTableTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_96">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/OperatingExpensesData_S000030189Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:AnnualFundOperatingExpensesTableTextBlock>
  <rr:ExpenseExampleNoRedemptionByYearCaption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_29">For the share classes listed below, you would pay the following if you did not redeem your shares:</rr:ExpenseExampleNoRedemptionByYearCaption>
  <rr:PerformanceTableTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_97">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/PerformanceTableData_S000030189Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * column rr_PerformanceMeasureAxis compact * row primary compact *  ~&lt;/div&gt;</rr:PerformanceTableTextBlock>
  <rr:PerformanceTableNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_60">&lt;tt&gt;After-tax returns are shown only for Class A shares; after-tax returns for other&lt;br /&gt;share classes will vary. After-tax returns are calculated using the highest&lt;br /&gt;individual federal income tax rates in effect during each year of the periods&lt;br /&gt;shown and do not reflect the impact of state and local taxes. Your actual&lt;br /&gt;after-tax returns depend on your individual tax situation and likely will &lt;br /&gt;differ from the results shown above.&lt;/tt&gt;</rr:PerformanceTableNarrativeTextBlock>
  <rr:RiskNotInsuredDepositoryInstitution contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_42">Your investment in the fund is not a bank deposit and is not insured or guaranteed
by the Federal Deposit Insurance Corporation or any other governmental agency,
entity or person.</rr:RiskNotInsuredDepositoryInstitution>
  <rr:ExpenseExampleNoRedemptionTableTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_95">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/ExpenseExampleNoRedemption_S000030189Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:ExpenseExampleNoRedemptionTableTextBlock>
  <rr:PerformanceTableFootnotesTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_91">&lt;tt&gt;Class A annualized 30-day yield at July 31, 2012: 2.30%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&lt;br /&gt;(For current yield information, please call American FundsLine&amp;#xAE; &lt;br /&gt;at 800/325-3590.)&lt;/tt&gt;</rr:PerformanceTableFootnotesTextBlock>
  <rr:ShareholderFeesTableTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1001_93">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/ShareholderFeesData_S000030189Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:ShareholderFeesTableTextBlock>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602440x-9984083" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_2001_82">Lipper New York Municipal Debt Funds Average (reflects no deductions for sales charges, account fees or taxes)</rr:AverageAnnualReturnLabel>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602440x-9984083" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_2001_83">0.0969</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602440x-9984083" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_2001_84">0.0379</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602440x-9984083" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_2001_85">0.0447</rr:AverageAnnualReturnYear10>
  <rr:AverageAnnualReturnSinceInception contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602440x-9984083" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_2001_86">0.0390</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602440x-9984083" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_2001_87">2010-11-01</rr:AverageAnnualReturnInceptionDate>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602440x-9984085" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_3001_77">Barclays New York Municipal Funds Index (reflects no deductions for sales charges, account fees, expenses or taxes)</rr:AverageAnnualReturnLabel>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602440x-9984085" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_3001_78">0.0979</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602440x-9984085" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_3001_79">0.0526</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnSinceInception contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602440x-9984085" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_3001_80">0.0505</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602440x-9984085" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_3001_81">2010-11-01</rr:AverageAnnualReturnInceptionDate>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602440x602366_602488x-9981397" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_4002_73">Share class A - After taxes on distributions and sale of fund shares</rr:AverageAnnualReturnLabel>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602440x602366_602488x-9981397" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_4002_74">0.0548</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnSinceInception contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602440x602366_602488x-9981397" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_4002_75">0.0271</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602440x602366_602488x-9981397" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_4002_76">2010-11-01</rr:AverageAnnualReturnInceptionDate>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602440x602395_602488x-9981397" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_5002_69">Share class A - After taxes on distributions</rr:AverageAnnualReturnLabel>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602440x602395_602488x-9981397" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_5002_70">0.0672</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnSinceInception contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602440x602395_602488x-9981397" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_5002_71">0.0269</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602440x602395_602488x-9981397" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_5002_72">2010-11-01</rr:AverageAnnualReturnInceptionDate>
  <dei:TradingSymbol contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981393" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1006_0">NYAFX</dei:TradingSymbol>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981393" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1006_10">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981393" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1006_65">Share class F-2 - Before taxes</rr:AverageAnnualReturnLabel>
  <rr:ExpenseExampleYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981393" unitRef="iso4217_USD" decimals="0" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1006_25">54</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981393" unitRef="iso4217_USD" decimals="0" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1006_26">192</rr:ExpenseExampleYear03>
  <rr:FeeWaiverOrReimbursementOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981393" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1006_19">-0.0010</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:ExpenseExampleYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981393" unitRef="iso4217_USD" decimals="0" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1006_28">777</rr:ExpenseExampleYear10>
  <rr:RedemptionFeeOverRedemption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981393" unitRef="pure" decimals="2" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1006_13">0.00</rr:RedemptionFeeOverRedemption>
  <rr:ExpenseExampleYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981393" unitRef="iso4217_USD" decimals="0" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1006_27">341</rr:ExpenseExampleYear05>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981393" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1006_66">0.1098</rr:AverageAnnualReturnYear01>
  <rr:OtherExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981393" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1006_17">0.0025</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981393" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1006_15">0.0038</rr:ManagementFeesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981393" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1006_20">2013-09-30</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981393" unitRef="pure" decimals="2" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1006_12">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981393" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1006_16">0.0000</rr:DistributionAndService12b1FeesOverAssets>
  <rr:NetExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981393" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1006_21">0.0053</rr:NetExpensesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981393" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1006_18">0.0063</rr:ExpensesOverAssets>
  <rr:AverageAnnualReturnSinceInception contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981393" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1006_67">0.0620</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981393" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1006_68">2010-11-01</rr:AverageAnnualReturnInceptionDate>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981393" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1006_11">0.0000</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981394" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1005_0">NYAEX</dei:TradingSymbol>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981394" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1005_10">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981394" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1005_65">Share class F-1 - Before taxes</rr:AverageAnnualReturnLabel>
  <rr:ExpenseExampleYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981394" unitRef="iso4217_USD" decimals="0" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1005_25">77</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981394" unitRef="iso4217_USD" decimals="0" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1005_26">263</rr:ExpenseExampleYear03>
  <rr:FeeWaiverOrReimbursementOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981394" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1005_19">-0.0011</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:ExpenseExampleYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981394" unitRef="iso4217_USD" decimals="0" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1005_28">1051</rr:ExpenseExampleYear10>
  <rr:RedemptionFeeOverRedemption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981394" unitRef="pure" decimals="2" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1005_13">0.00</rr:RedemptionFeeOverRedemption>
  <rr:ExpenseExampleYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981394" unitRef="iso4217_USD" decimals="0" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1005_27">466</rr:ExpenseExampleYear05>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981394" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1005_66">0.1070</rr:AverageAnnualReturnYear01>
  <rr:OtherExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981394" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1005_17">0.0025</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981394" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1005_15">0.0038</rr:ManagementFeesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981394" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1005_20">2013-09-30</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981394" unitRef="pure" decimals="2" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1005_12">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981394" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1005_16">0.0023</rr:DistributionAndService12b1FeesOverAssets>
  <rr:NetExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981394" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1005_21">0.0075</rr:NetExpensesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981394" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1005_18">0.0086</rr:ExpensesOverAssets>
  <rr:AverageAnnualReturnSinceInception contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981394" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1005_67">0.0595</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981394" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1005_68">2010-11-01</rr:AverageAnnualReturnInceptionDate>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981394" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1005_11">0.0000</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981395" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1004_0">NYACX</dei:TradingSymbol>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981395" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1004_10">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981395" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1004_65">Share class C - Before taxes</rr:AverageAnnualReturnLabel>
  <rr:ExpenseExampleYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981395" unitRef="iso4217_USD" decimals="0" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1004_25">253</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleNoRedemptionYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981395" unitRef="iso4217_USD" decimals="0" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1004_30">153</rr:ExpenseExampleNoRedemptionYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981395" unitRef="iso4217_USD" decimals="0" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1004_26">499</rr:ExpenseExampleYear03>
  <rr:FeeWaiverOrReimbursementOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981395" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1004_19">-0.0012</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:ExpenseExampleYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981395" unitRef="iso4217_USD" decimals="0" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1004_28">1912</rr:ExpenseExampleYear10>
  <rr:RedemptionFeeOverRedemption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981395" unitRef="pure" decimals="2" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1004_13">0.00</rr:RedemptionFeeOverRedemption>
  <rr:ExpenseExampleYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981395" unitRef="iso4217_USD" decimals="0" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1004_27">870</rr:ExpenseExampleYear05>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981395" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1004_66">0.0889</rr:AverageAnnualReturnYear01>
  <rr:OtherExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981395" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1004_17">0.0024</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981395" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1004_15">0.0038</rr:ManagementFeesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981395" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1004_20">2013-09-30</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:ExpenseExampleNoRedemptionYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981395" unitRef="iso4217_USD" decimals="0" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1004_33">1912</rr:ExpenseExampleNoRedemptionYear10>
  <rr:ExpenseExampleNoRedemptionYear03 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981395" unitRef="iso4217_USD" decimals="0" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1004_31">499</rr:ExpenseExampleNoRedemptionYear03>
  <rr:ExpenseExampleNoRedemptionYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981395" unitRef="iso4217_USD" decimals="0" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1004_32">870</rr:ExpenseExampleNoRedemptionYear05>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981395" unitRef="pure" decimals="2" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1004_12">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981395" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1004_16">0.0100</rr:DistributionAndService12b1FeesOverAssets>
  <rr:NetExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981395" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1004_21">0.0150</rr:NetExpensesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981395" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1004_18">0.0162</rr:ExpensesOverAssets>
  <rr:AverageAnnualReturnSinceInception contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981395" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1004_67">0.0523</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981395" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1004_68">2010-11-01</rr:AverageAnnualReturnInceptionDate>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981395" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1004_11">0.0100</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981396" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1003_0">NYABX</dei:TradingSymbol>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981396" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1003_10">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981396" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1003_65">Share class B - Before taxes</rr:AverageAnnualReturnLabel>
  <rr:ExpenseExampleYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981396" unitRef="iso4217_USD" decimals="0" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1003_25">648</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleNoRedemptionYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981396" unitRef="iso4217_USD" decimals="0" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1003_30">148</rr:ExpenseExampleNoRedemptionYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981396" unitRef="iso4217_USD" decimals="0" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1003_26">888</rr:ExpenseExampleYear03>
  <rr:FeeWaiverOrReimbursementOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981396" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1003_19">-0.0014</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:ExpenseExampleYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981396" unitRef="iso4217_USD" decimals="0" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1003_28">1654</rr:ExpenseExampleYear10>
  <rr:RedemptionFeeOverRedemption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981396" unitRef="pure" decimals="2" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1003_13">0.00</rr:RedemptionFeeOverRedemption>
  <rr:ExpenseExampleYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981396" unitRef="iso4217_USD" decimals="0" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1003_27">1052</rr:ExpenseExampleYear05>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981396" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1003_66">0.0495</rr:AverageAnnualReturnYear01>
  <rr:OtherExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981396" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1003_17">0.0022</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981396" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1003_15">0.0038</rr:ManagementFeesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981396" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1003_20">2013-09-30</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:ExpenseExampleNoRedemptionYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981396" unitRef="iso4217_USD" decimals="0" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1003_33">1654</rr:ExpenseExampleNoRedemptionYear10>
  <rr:ExpenseExampleNoRedemptionYear03 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981396" unitRef="iso4217_USD" decimals="0" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1003_31">488</rr:ExpenseExampleNoRedemptionYear03>
  <rr:ExpenseExampleNoRedemptionYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981396" unitRef="iso4217_USD" decimals="0" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1003_32">852</rr:ExpenseExampleNoRedemptionYear05>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981396" unitRef="pure" decimals="2" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1003_12">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981396" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1003_16">0.0099</rr:DistributionAndService12b1FeesOverAssets>
  <rr:NetExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981396" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1003_21">0.0145</rr:NetExpensesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981396" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1003_18">0.0159</rr:ExpensesOverAssets>
  <rr:AverageAnnualReturnSinceInception contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981396" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1003_67">0.0181</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981396" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1003_68">2010-11-01</rr:AverageAnnualReturnInceptionDate>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981396" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1003_11">0.0500</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981397" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1002_0">NYAAX</dei:TradingSymbol>
  <rr:LowestQuarterlyReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981397" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1002_56">Lowest</rr:LowestQuarterlyReturnLabel>
  <rr:HighestQuarterlyReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981397" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1002_53">Highest</rr:HighestQuarterlyReturnLabel>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981397" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1002_10">0.0375</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:ThirtyDayYieldPhone contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981397" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1002_89">800/325-3590</rr:ThirtyDayYieldPhone>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981397" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1002_65">Share class A - Before taxes</rr:AverageAnnualReturnLabel>
  <rr:ExpenseExampleYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981397" unitRef="iso4217_USD" decimals="0" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1002_25">437</rr:ExpenseExampleYear01>
  <rr:BarChartHighestQuarterlyReturnDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981397" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1002_55">2011-09-30</rr:BarChartHighestQuarterlyReturnDate>
  <rr:ThirtyDayYield contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981397" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1002_90">0.0230</rr:ThirtyDayYield>
  <rr:ExpenseExampleYear03 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981397" unitRef="iso4217_USD" decimals="0" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1002_26">596</rr:ExpenseExampleYear03>
  <rr:BarChartLowestQuarterlyReturn contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981397" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1002_57">0.0062</rr:BarChartLowestQuarterlyReturn>
  <rr:FeeWaiverOrReimbursementOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981397" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1002_19">-0.0013</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:ExpenseExampleYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981397" unitRef="iso4217_USD" decimals="0" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1002_28">1270</rr:ExpenseExampleYear10>
  <rr:RedemptionFeeOverRedemption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981397" unitRef="pure" decimals="2" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1002_13">0.00</rr:RedemptionFeeOverRedemption>
  <rr:ExpenseExampleYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981397" unitRef="iso4217_USD" decimals="0" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1002_27">769</rr:ExpenseExampleYear05>
  <rr:BarChartHighestQuarterlyReturn contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981397" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1002_54">0.0399</rr:BarChartHighestQuarterlyReturn>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981397" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1002_66">0.0672</rr:AverageAnnualReturnYear01>
  <rr:OtherExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981397" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1002_17">0.0020</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981397" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1002_15">0.0038</rr:ManagementFeesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981397" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1002_20">2013-09-30</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:BarChartLowestQuarterlyReturnDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981397" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1002_58">2011-03-31</rr:BarChartLowestQuarterlyReturnDate>
  <rr:AnnualReturn2011 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981397" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1002_52">0.1092</rr:AnnualReturn2011>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981397" unitRef="pure" decimals="2" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1002_12">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:ThirtyDayYieldCaption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981397" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1002_88">Class A annualized 30-day yield at July 31, 2012:</rr:ThirtyDayYieldCaption>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981397" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1002_16">0.0018</rr:DistributionAndService12b1FeesOverAssets>
  <rr:NetExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981397" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1002_21">0.0063</rr:NetExpensesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981397" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1002_18">0.0076</rr:ExpensesOverAssets>
  <rr:AverageAnnualReturnSinceInception contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981397" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1002_67">0.0269</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981397" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1002_68">2010-11-01</rr:AverageAnnualReturnInceptionDate>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981387_602238x-9981381_602488x-9981397" unitRef="pure" decimals="4" id="id_303144_B474AB98-A4FF-47FD-A0CB-C4018A4FCB88_1002_11">0.0100</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <rr:PortfolioTurnoverTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_24">&lt;tt&gt;The fund pays transaction costs, such as commissions, when it buys and sells &lt;br /&gt;securities (or "turns over" its portfolio). A higher portfolio turnover rate &lt;br /&gt;may indicate higher transaction costs and may result in higher taxes when &lt;br /&gt;fund shares are held in a taxable account. These costs, which are not reflected &lt;br /&gt;in annual fund operating expenses or in the example, affect the fund&apos;s&lt;br /&gt;investment results. During the most recent fiscal year, the fund&apos;s portfolio&lt;br /&gt;turnover rate was 9% of the average value of its portfolio.&lt;/tt&gt;</rr:PortfolioTurnoverTextBlock>
  <rr:ExpenseExampleWithRedemptionTableTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_97">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/ExpenseExample_S000009237Member2 column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:ExpenseExampleWithRedemptionTableTextBlock>
  <rr:BarChartTableTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_95">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/BarChartData_S000009237Member2 column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:BarChartTableTextBlock>
  <rr:ObjectivePrimaryTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_2">&lt;tt&gt;The fund&apos;s investment objective is to provide you with current income that is&lt;br /&gt;exempt from regular federal income tax, consistent with the maturity and quality&lt;br /&gt;standards described in this prospectus, and preservation of capital.&lt;/tt&gt;</rr:ObjectivePrimaryTextBlock>
  <rr:ExpenseExampleNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_17">&lt;tt&gt;This example is intended to help you compare the cost of investing in&lt;br /&gt;the fund with the cost of investing in other mutual funds.&lt;br /&gt; &lt;br /&gt;The example assumes that you invest $10,000 in the fund for the time periods&lt;br /&gt;indicated and then redeem all of your shares at the end of those periods. The&lt;br /&gt;example also assumes that your investment has a 5% return each year and that the&lt;br /&gt;fund&apos;s operating expenses remain the same.&lt;/tt&gt;</rr:ExpenseExampleNarrativeTextBlock>
  <rr:StrategyNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_27">&lt;tt&gt;The fund invests primarily in municipal bonds. Under normal circumstances, the&lt;br /&gt;fund will invest at least 80% of its assets in, or derive at least 80% of its&lt;br /&gt;income from, securities that are exempt from regular federal income tax and that&lt;br /&gt;do not subject you to federal alternative minimum tax. The fund may also invest&lt;br /&gt;up to 20% of its assets in securities that may subject you to federal&lt;br /&gt;alternative minimum tax.&lt;br /&gt; &lt;br /&gt;The fund invests primarily in municipal bonds rated A- or better or A3 or better&lt;br /&gt;by Nationally Recognized Statistical Rating Organizations designated by the&lt;br /&gt;fund&apos;s investment adviser, or unrated but determined by the fund&apos;s investment&lt;br /&gt;adviser to be of equivalent quality. The fund may also invest in municipal bonds&lt;br /&gt;in the rating categories of BBB and Baa or unrated but determined by the fund&apos;s&lt;br /&gt;investment adviser to be of equivalent quality. Some of the securities in which&lt;br /&gt;the fund invests may have credit and liquidity support features, including&lt;br /&gt;guarantees and letters of credit. The dollar-weighted average maturity of the&lt;br /&gt;fund&apos;s portfolio is between three and 10 years.&lt;br /&gt; &lt;br /&gt;In addition, the fund may invest significantly in municipal obligations of&lt;br /&gt;issuers in the same state, or engaged in the same types of projects or&lt;br /&gt;industries.&lt;br /&gt;&lt;br /&gt;The investment adviser uses a system of multiple portfolio counselors in&lt;br /&gt;managing the fund&apos;s assets. Under this approach, the portfolio of the fund is&lt;br /&gt;divided into segments managed by individual counselors who decide how their&lt;br /&gt;respective segments will be invested.&lt;br /&gt; &lt;br /&gt;The fund relies on the professional judgment of its investment adviser to make&lt;br /&gt;decisions about the fund&apos;s portfolio investments. The basic investment philosophy &lt;br /&gt;of the investment adviser is to seek to invest in attractively priced securities &lt;br /&gt;that, in its opinion, represent good, long-term investment opportunities. The &lt;br /&gt;investment adviser believes that an important way to accomplish this is by analyzing &lt;br /&gt;various factors, which may include the credit strength of the issuer, prices of &lt;br /&gt;similar securities issued by comparable issuers, anticipated changes in interest rates, &lt;br /&gt;general market conditions and other factors pertinent to the particular security being &lt;br /&gt;evaluated. Securities may be sold when the investment adviser believes that they no &lt;br /&gt;longer represent relatively attractive investment opportunities.&lt;/tt&gt;</rr:StrategyNarrativeTextBlock>
  <rr:RiskReturnHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_0">Limited Term Tax-Exempt Bond Fund of America&#174;</rr:RiskReturnHeading>
  <rr:ExpenseExampleHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_16">Example</rr:ExpenseExampleHeading>
  <rr:PerformanceTableUsesHighestFederalRate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_59">After-tax returns are calculated using the highest individual federal income tax
rates in effect during each year of the periods shown and do not reflect the impact
of state and local taxes.</rr:PerformanceTableUsesHighestFederalRate>
  <rr:OtherExpensesNewFundBasedOnEstimates contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_15">Based on estimated amounts for a full fiscal year.</rr:OtherExpensesNewFundBasedOnEstimates>
  <rr:ObjectiveHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_1">Investment objective</rr:ObjectiveHeading>
  <rr:PerformancePastDoesNotIndicateFuture contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_37">Past investment results (before and after taxes) are not predictive of future investment results.</rr:PerformancePastDoesNotIndicateFuture>
  <rr:PerformanceAdditionalMarketIndex contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_35">The Lipper Intermediate Municipal Debt Funds Average includes the fund and other
funds that disclose investment objectives and/or strategies reasonably comparable
to the fund&apos;s objective and/or strategies.</rr:PerformanceAdditionalMarketIndex>
  <rr:RiskLoseMoney contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_30">You may lose money by investing in the fund.</rr:RiskLoseMoney>
  <rr:RiskHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_28">Principal risks</rr:RiskHeading>
  <rr:ShareholderFeesCaption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_5">Shareholder fees (fees paid directly from your investment)</rr:ShareholderFeesCaption>
  <rr:ExpenseExampleByYearCaption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_18">Although your actual costs may be higher or lower, based on these assumptions your costs would be:</rr:ExpenseExampleByYearCaption>
  <rr:PortfolioTurnoverRate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" unitRef="pure" decimals="2" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_25">0.09</rr:PortfolioTurnoverRate>
  <rr:PerformanceTableNotRelevantToTaxDeferred contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_60">Your actual after-tax returns depend on your individual tax situation and likely will differ from the results shown above.</rr:PerformanceTableNotRelevantToTaxDeferred>
  <rr:BarChartHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_38">Calendar year total returns for Class A shares (Results do not include a sales charge; if a sales charge were included, results would be lower.)</rr:BarChartHeading>
  <rr:BarChartDoesNotReflectSalesLoads contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_40">(Results do not include a sales charge; if a sales charge were included, results would be lower.)</rr:BarChartDoesNotReflectSalesLoads>
  <rr:BarChartAndPerformanceTableHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_32">Investment results</rr:BarChartAndPerformanceTableHeading>
  <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_34">The following bar chart shows how the fund&apos;s investment results have varied from
year to year, and the following table shows how the fund&apos;s average annual total
returns for various periods compare with different broad measures of market results.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
  <rr:BarChartClosingTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_57">&lt;tt&gt;Highest/Lowest quarterly results during the period were:&lt;br /&gt;&lt;br /&gt;Highest 5.60% (quarter ended &lt;br /&gt;September 30, 2009)&lt;br /&gt;&lt;br /&gt;Lowest -2.23% (quarter ended&lt;br /&gt;December 31, 2010)&lt;/tt&gt;</rr:BarChartClosingTextBlock>
  <rr:OperatingExpensesCaption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_10">Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)</rr:OperatingExpensesCaption>
  <rr:AverageAnnualReturnCaption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_62">Average annual total returns For the periods ended December 31, 2011 (with maximum sales charge):</rr:AverageAnnualReturnCaption>
  <rr:BarChartNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_39">&lt;tt&gt;The following bar chart shows how the fund&apos;s investment results have varied from&lt;br /&gt;year to year, and the following table shows how the fund&apos;s average annual total&lt;br /&gt;returns for various periods compare with different broad measures of market&lt;br /&gt;results.&lt;/tt&gt;</rr:BarChartNarrativeTextBlock>
  <rr:PortfolioTurnoverHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_23">Portfolio turnover</rr:PortfolioTurnoverHeading>
  <rr:RiskNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_29">&lt;tt&gt;This section describes the principal risks associated with the fund&apos;s principal&lt;br /&gt;investment strategies. You may lose money by investing in the fund. The&lt;br /&gt;likelihood of loss may be greater if you invest for a shorter period of time.&lt;br /&gt; &lt;br /&gt;Market conditions -- The prices of, and the income generated by, the securities&lt;br /&gt;held by the fund may decline due to market conditions and other factors,&lt;br /&gt;including those directly involving the issuers of securities held by the fund.&lt;br /&gt; &lt;br /&gt;Investing in bonds -- Rising interest rates will generally cause the prices of&lt;br /&gt;bonds and other debt securities to fall. Longer maturity debt securities may be&lt;br /&gt;subject to greater price fluctuations than shorter maturity debt securities. &lt;br /&gt;In addition, falling interest rates may cause an issuer to redeem, call or&lt;br /&gt;refinance a security before its stated maturity, which may result in the fund&lt;br /&gt;having to reinvest the proceeds in lower yielding securities.&lt;br /&gt; &lt;br /&gt;Bonds and other debt securities are subject to credit risk, which is the&lt;br /&gt;possibility that the credit strength of an issuer will weaken and/or an issuer&lt;br /&gt;of a debt security will fail to make timely payments of principal or interest&lt;br /&gt;and the security will go into default.&lt;br /&gt; &lt;br /&gt;Thinly traded securities -- There may be little trading in the secondary market&lt;br /&gt;for particular bonds or other debt securities, which may make them more&lt;br /&gt;difficult to value, acquire or sell.&lt;br /&gt; &lt;br /&gt;Credit and liquidity support -- Changes in the credit quality of banks and&lt;br /&gt;financial institutions providing credit and liquidity support features with&lt;br /&gt;respect to securities held by the fund could cause the values of these&lt;br /&gt;securities to decline.&lt;br /&gt;&lt;br /&gt;Investing in lower rated bonds -- Lower rated bonds and other lower rated debt&lt;br /&gt;securities generally have higher rates of interest and involve greater risk of&lt;br /&gt;default or price declines due to changes in the issuer&apos;s creditworthiness than&lt;br /&gt;those of higher quality debt securities. The market prices of these securities&lt;br /&gt;may fluctuate more than the prices of higher quality debt securities and may&lt;br /&gt;decline significantly in periods of general economic difficulty.&lt;br /&gt; &lt;br /&gt;Investing in similar municipal bonds -- Investing significantly in municipal&lt;br /&gt;obligations of issuers in the same state or backed by revenues of similar &lt;br /&gt;types of projects or industries may make the fund more susceptible to certain&lt;br /&gt;economic, political or regulatory occurrences. As a result, the potential for&lt;br /&gt;fluctuations in the fund&apos;s share price may increase.&lt;br /&gt; &lt;br /&gt;Management -- The investment adviser to the fund actively manages the fund&apos;s&lt;br /&gt;investments. Consequently, the fund is subject to the risk that the methods &lt;br /&gt;and analyses employed by the investment adviser in this process may not produce &lt;br /&gt;the desired results. This could cause the fund to lose value or its investment&lt;br /&gt;results to lag relevant benchmarks or other funds with similar objectives.&lt;br /&gt; &lt;br /&gt;Your investment in the fund is not a bank deposit and is not insured or&lt;br /&gt;guaranteed by the Federal Deposit Insurance Corporation or any other&lt;br /&gt;governmental agency, entity or person. You should consider how this fund &lt;br /&gt;fits into your overall investment program.&lt;/tt&gt;</rr:RiskNarrativeTextBlock>
  <rr:ExpenseHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_3">Fees and expenses of the fund</rr:ExpenseHeading>
  <rr:PerformanceTableOneClassOfAfterTaxShown contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_61">After-tax returns are shown only for Class A shares; after-tax returns for other share classes will vary.</rr:PerformanceTableOneClassOfAfterTaxShown>
  <rr:StrategyHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_26">Principal investment strategies</rr:StrategyHeading>
  <rr:PerformanceAvailabilityWebSiteAddress contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_36">americanfunds.com.</rr:PerformanceAvailabilityWebSiteAddress>
  <rr:PerformanceNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_33">&lt;tt&gt;The following bar chart shows how the fund&apos;s investment results have varied from&lt;br /&gt;year to year, and the following table shows how the fund&apos;s average annual total&lt;br /&gt;returns for various periods compare with different broad measures of market&lt;br /&gt;results. This information provides some indication of the risks of investing in&lt;br /&gt;the fund. The Lipper Intermediate Municipal Debt Funds Average includes the fund&lt;br /&gt;and other funds that disclose investment objectives and/or strategies reasonably&lt;br /&gt;comparable to the fund&apos;s objective and/or strategies. Past investment results&lt;br /&gt;(before and after taxes) are not predictive of future investment results.&lt;br /&gt;Updated information on the fund&apos;s investment results can be obtained by visiting&lt;br /&gt;americanfunds.com. Investment results for Class R-6 shares are not presented&lt;br /&gt;because the class had not commenced operations as of December 31, 2011. However,&lt;br /&gt;results for Class A shares are presented because Class A is the class of shares&lt;br /&gt;with the longest period of operation. Other share classes, including Class R-6&lt;br /&gt;shares, have different expenses and therefore different investment results.&lt;/tt&gt;</rr:PerformanceNarrativeTextBlock>
  <rr:ExpenseNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_4">&lt;tt&gt;This table describes the fees and expenses that you may pay if you buy and hold&lt;br /&gt;shares of the fund.&lt;/tt&gt;</rr:ExpenseNarrativeTextBlock>
  <rr:AnnualFundOperatingExpensesTableTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_98">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/OperatingExpensesData_S000009237Member2 column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:AnnualFundOperatingExpensesTableTextBlock>
  <rr:PerformanceTableTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_99">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/PerformanceTableData_S000009237Member2 column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * column rr_PerformanceMeasureAxis compact * row primary compact *  ~&lt;/div&gt;</rr:PerformanceTableTextBlock>
  <rr:PerformanceTableNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_58">&lt;tt&gt;After-tax returns are shown only for Class A shares; after-tax returns for other&lt;br /&gt;share classes will vary. After-tax returns are calculated using the highest&lt;br /&gt;individual federal income tax rates in effect during each year of the periods&lt;br /&gt;shown and do not reflect the impact of state and local taxes. Your actual&lt;br /&gt;after-tax returns depend on your individual tax situation and likely will differ&lt;br /&gt;from the results shown above.&lt;/tt&gt;</rr:PerformanceTableNarrativeTextBlock>
  <rr:RiskNotInsuredDepositoryInstitution contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_31">Your investment in the fund is not a bank deposit and is not insured or guaranteed
by the Federal Deposit Insurance Corporation or any other governmental agency, entity
or person.</rr:RiskNotInsuredDepositoryInstitution>
  <rr:PerformanceTableFootnotesTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_94">&lt;tt&gt;Class A annualized 30-day yield at July 31, 2012: 1.12%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&lt;br /&gt;(For current yield information, please call American FundsLine&amp;#xAE; &lt;br /&gt;at 800/325-3590.)&lt;/tt&gt;</rr:PerformanceTableFootnotesTextBlock>
  <rr:ShareholderFeesTableTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1001_96">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/ShareholderFeesData_S000009237Member2 column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:ShareholderFeesTableTextBlock>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602440x-9984086" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_2001_85">Lipper Intermediate Municipal Debt Funds Average (reflects no deductions for sales charges, account fees or taxes)</rr:AverageAnnualReturnLabel>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602440x-9984086" unitRef="pure" decimals="4" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_2001_86">0.0860</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602440x-9984086" unitRef="pure" decimals="4" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_2001_87">0.0449</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602440x-9984086" unitRef="pure" decimals="4" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_2001_88">0.0431</rr:AverageAnnualReturnYear10>
  <rr:AverageAnnualReturnSinceInception contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602440x-9984086" unitRef="pure" decimals="4" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_2001_89">0.0463</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602440x-9984086" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_2001_90">1993-10-06</rr:AverageAnnualReturnInceptionDate>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602440x-9984087" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_3001_79">Barclays Municipal Short-Intermediate 1-10 Years Index (reflects no deductions for sales charges, account fees, expenses or taxes)</rr:AverageAnnualReturnLabel>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602440x-9984087" unitRef="pure" decimals="4" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_3001_80">0.0676</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602440x-9984087" unitRef="pure" decimals="4" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_3001_81">0.0520</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602440x-9984087" unitRef="pure" decimals="4" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_3001_82">0.0460</rr:AverageAnnualReturnYear10>
  <rr:AverageAnnualReturnSinceInception contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602440x-9984087" unitRef="pure" decimals="4" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_3001_83">0.0484</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602440x-9984087" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_3001_84">1993-10-06</rr:AverageAnnualReturnInceptionDate>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602440x602366_602488x-9981391" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_4002_74">Share class A - After taxes on distributions and sale of fund shares</rr:AverageAnnualReturnLabel>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602440x602366_602488x-9981391" unitRef="pure" decimals="4" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_4002_75">0.0411</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602440x602366_602488x-9981391" unitRef="pure" decimals="4" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_4002_76">0.0380</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602440x602366_602488x-9981391" unitRef="pure" decimals="4" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_4002_77">0.0386</rr:AverageAnnualReturnYear10>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602440x602366_602488x-9981391" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_4002_78">1993-10-06</rr:AverageAnnualReturnInceptionDate>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602440x602395_602488x-9981391" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_5002_69">Share class A - After taxes on distributions</rr:AverageAnnualReturnLabel>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602440x602395_602488x-9981391" unitRef="pure" decimals="4" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_5002_70">0.0477</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602440x602395_602488x-9981391" unitRef="pure" decimals="4" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_5002_71">0.0391</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602440x602395_602488x-9981391" unitRef="pure" decimals="4" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_5002_72">0.0395</rr:AverageAnnualReturnYear10>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602440x602395_602488x-9981391" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_5002_73">1993-10-06</rr:AverageAnnualReturnInceptionDate>
  <rr:AnnualReturn2002 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602488x-9981391" unitRef="pure" decimals="4" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1002_41">0.0781</rr:AnnualReturn2002>
  <rr:LowestQuarterlyReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602488x-9981391" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1002_54">Lowest</rr:LowestQuarterlyReturnLabel>
  <rr:HighestQuarterlyReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602488x-9981391" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1002_51">Highest</rr:HighestQuarterlyReturnLabel>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602488x-9981391" unitRef="pure" decimals="2" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1002_6">0.00</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:ThirtyDayYieldPhone contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602488x-9981391" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1002_92">800/325-3590</rr:ThirtyDayYieldPhone>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602488x-9981391" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1002_63">Share class A - Before taxes</rr:AverageAnnualReturnLabel>
  <rr:ExpenseExampleYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602488x-9981391" unitRef="iso4217_USD" decimals="0" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1002_19">33</rr:ExpenseExampleYear01>
  <rr:BarChartHighestQuarterlyReturnDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602488x-9981391" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1002_53">2009-09-30</rr:BarChartHighestQuarterlyReturnDate>
  <rr:ThirtyDayYield contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602488x-9981391" unitRef="pure" decimals="4" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1002_93">0.0112</rr:ThirtyDayYield>
  <rr:ExpenseExampleYear03 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602488x-9981391" unitRef="iso4217_USD" decimals="0" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1002_20">103</rr:ExpenseExampleYear03>
  <rr:BarChartLowestQuarterlyReturn contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602488x-9981391" unitRef="pure" decimals="4" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1002_55">-0.0223</rr:BarChartLowestQuarterlyReturn>
  <rr:AnnualReturn2004 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602488x-9981391" unitRef="pure" decimals="4" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1002_43">0.0277</rr:AnnualReturn2004>
  <rr:AnnualReturn2010 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602488x-9981391" unitRef="pure" decimals="4" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1002_49">0.0364</rr:AnnualReturn2010>
  <rr:ExpenseExampleYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602488x-9981391" unitRef="iso4217_USD" decimals="0" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1002_22">406</rr:ExpenseExampleYear10>
  <rr:RedemptionFeeOverRedemption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602488x-9981391" unitRef="pure" decimals="2" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1002_9">0.00</rr:RedemptionFeeOverRedemption>
  <rr:ExpenseExampleYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602488x-9981391" unitRef="iso4217_USD" decimals="0" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1002_21">180</rr:ExpenseExampleYear05>
  <rr:AnnualReturn2007 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602488x-9981391" unitRef="pure" decimals="4" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1002_46">0.0324</rr:AnnualReturn2007>
  <rr:BarChartHighestQuarterlyReturn contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602488x-9981391" unitRef="pure" decimals="4" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1002_52">0.0560</rr:BarChartHighestQuarterlyReturn>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602488x-9981391" unitRef="pure" decimals="4" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1002_64">0.0477</rr:AverageAnnualReturnYear01>
  <rr:OtherExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602488x-9981391" unitRef="pure" decimals="4" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1002_13">0.0007</rr:OtherExpensesOverAssets>
  <rr:AnnualReturn2008 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602488x-9981391" unitRef="pure" decimals="4" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1002_47">-0.0131</rr:AnnualReturn2008>
  <rr:ManagementFeesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602488x-9981391" unitRef="pure" decimals="4" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1002_11">0.0025</rr:ManagementFeesOverAssets>
  <rr:BarChartLowestQuarterlyReturnDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602488x-9981391" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1002_56">2010-12-31</rr:BarChartLowestQuarterlyReturnDate>
  <rr:AnnualReturn2009 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602488x-9981391" unitRef="pure" decimals="4" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1002_48">0.0945</rr:AnnualReturn2009>
  <rr:AverageAnnualReturnYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602488x-9981391" unitRef="pure" decimals="4" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1002_65">0.0391</rr:AverageAnnualReturnYear05>
  <rr:AnnualReturn2005 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602488x-9981391" unitRef="pure" decimals="4" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1002_44">0.0157</rr:AnnualReturn2005>
  <rr:AnnualReturn2011 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602488x-9981391" unitRef="pure" decimals="4" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1002_50">0.0748</rr:AnnualReturn2011>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602488x-9981391" unitRef="pure" decimals="2" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1002_8">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:AnnualReturn2003 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602488x-9981391" unitRef="pure" decimals="4" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1002_42">0.0428</rr:AnnualReturn2003>
  <rr:ThirtyDayYieldCaption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602488x-9981391" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1002_91">Class A annualized 30-day yield at July 31, 2012:</rr:ThirtyDayYieldCaption>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602488x-9981391" unitRef="pure" decimals="2" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1002_12">0.00</rr:DistributionAndService12b1FeesOverAssets>
  <rr:AverageAnnualReturnYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602488x-9981391" unitRef="pure" decimals="4" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1002_66">0.0395</rr:AverageAnnualReturnYear10>
  <rr:ExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602488x-9981391" unitRef="pure" decimals="4" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1002_14">0.0032</rr:ExpensesOverAssets>
  <rr:AnnualReturn2006 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602488x-9981391" unitRef="pure" decimals="4" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1002_45">0.0361</rr:AnnualReturn2006>
  <rr:AverageAnnualReturnSinceInception contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602488x-9981391" unitRef="pure" decimals="4" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1002_67">0.0444</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602488x-9981391" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1002_68">1993-10-06</rr:AverageAnnualReturnInceptionDate>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981382_602488x-9981391" unitRef="pure" decimals="2" id="id_303144_F905CC65-4308-455A-A6E3-637BD05A532B_1002_7">0.00</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <rr:PortfolioTurnoverTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_31">&lt;tt&gt;The fund pays transaction costs, such as commissions, when it buys and sells &lt;br /&gt;securities (or "turns over" its portfolio). A higher portfolio turnover rate &lt;br /&gt;may indicate higher transaction costs and may result in higher taxes when fund &lt;br /&gt;shares are held in a taxable account. These costs, which are not reflected in &lt;br /&gt;annual fund operating expenses or in the example, affect the fund&apos;s investment &lt;br /&gt;results. During the most recent fiscal year, the fund&apos;s portfolio turnover rate &lt;br /&gt;was 9% of the average value of its portfolio.&lt;/tt&gt;</rr:PortfolioTurnoverTextBlock>
  <rr:ExpenseExampleWithRedemptionTableTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_104">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/ExpenseExample_S000009237Member1 column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:ExpenseExampleWithRedemptionTableTextBlock>
  <rr:BarChartTableTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_102">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/BarChartData_S000009237Member1 column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:BarChartTableTextBlock>
  <rr:ObjectivePrimaryTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_3">&lt;tt&gt;The fund&apos;s investment objective is to provide you with current income that is&lt;br /&gt;exempt from regular federal income tax, consistent with the maturity and quality&lt;br /&gt;standards described in this prospectus, and preservation of capital.&lt;/tt&gt;</rr:ObjectivePrimaryTextBlock>
  <rr:ExpenseExampleNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_19">&lt;tt&gt;This example is intended to help you compare the cost of investing in&lt;br /&gt;the fund with the cost of investing in other mutual funds.&lt;br /&gt; &lt;br /&gt;The example assumes that you invest $10,000 in the fund for the time periods&lt;br /&gt;indicated and then redeem all of your shares at the end of those periods. The&lt;br /&gt;example also assumes that your investment has a 5% return each year and that &lt;br /&gt;the fund&apos;s operating expenses remain the same.&lt;/tt&gt;</rr:ExpenseExampleNarrativeTextBlock>
  <rr:StrategyNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_34">&lt;tt&gt;The fund invests primarily in municipal bonds. Under normal circumstances, the&lt;br /&gt;fund will invest at least 80% of its assets in, or derive at least 80% of its&lt;br /&gt;income from, securities that are exempt from regular federal income tax and that&lt;br /&gt;do not subject you to federal alternative minimum tax. The fund may also invest&lt;br /&gt;up to 20% of its assets in securities that may subject you to federal&lt;br /&gt;alternative minimum tax.&lt;br /&gt; &lt;br /&gt;The fund invests primarily in municipal bonds rated A- or better or A3 or better&lt;br /&gt;by Nationally Recognized Statistical Rating Organizations designated by the&lt;br /&gt;fund&apos;s investment adviser, or unrated but determined by the fund&apos;s investment&lt;br /&gt;adviser to be of equivalent quality. The fund may also invest in municipal bonds&lt;br /&gt;in the rating categories of BBB and Baa or unrated but determined by the fund&apos;s&lt;br /&gt;investment adviser to be of equivalent quality. Some of the securities in which&lt;br /&gt;the fund invests may have credit and liquidity support features, including&lt;br /&gt;guarantees and letters of credit. The dollar-weighted average maturity of the&lt;br /&gt;fund&apos;s portfolio is between three and 10 years.&lt;br /&gt; &lt;br /&gt;In addition, the fund may invest significantly in municipal obligations of&lt;br /&gt;issuers in the same state, or engaged in the same types of projects or&lt;br /&gt;industries.&lt;br /&gt; &lt;br /&gt;The investment adviser uses a system of multiple portfolio counselors in&lt;br /&gt;managing the fund&apos;s assets. Under this approach, the portfolio of the fund &lt;br /&gt;is divided into segments managed by individual counselors who decide how their&lt;br /&gt;respective segments will be invested.&lt;br /&gt; &lt;br /&gt;The fund relies on the professional judgment of its investment adviser to make&lt;br /&gt;decisions about the fund&apos;s portfolio investments. The basic investment philosophy &lt;br /&gt;of the investment adviser is to seek to invest in attractively priced securities &lt;br /&gt;that, in its opinion, represent good, long-term investment opportunities. The &lt;br /&gt;investment adviser believes that an important way to accomplish this is by &lt;br /&gt;analyzing various factors, which may include the credit strength of the issuer, &lt;br /&gt;prices of similar securities issued by comparable issuers, anticipated changes &lt;br /&gt;in interest rates, general market conditions and other factors pertinent to the &lt;br /&gt;particular security being evaluated. Securities may be sold when the investment &lt;br /&gt;adviser believes that they no longer represent relatively attractive investment &lt;br /&gt;opportunities.&lt;/tt&gt;</rr:StrategyNarrativeTextBlock>
  <rr:RiskReturnHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_1">Limited Term Tax-Exempt Bond Fund of America&#174;</rr:RiskReturnHeading>
  <rr:ExpenseBreakpointDiscounts contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_6">You may qualify for sales charge discounts if you and your family invest, or agree to
invest in the future, at least $500,000 in American Funds.</rr:ExpenseBreakpointDiscounts>
  <rr:ExpenseExampleHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_18">Example</rr:ExpenseExampleHeading>
  <rr:PerformanceTableUsesHighestFederalRate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_66">After-tax returns are calculated using the highest individual federal income tax
rates in effect during each year of the periods shown and do not reflect the impact
of state and local taxes.</rr:PerformanceTableUsesHighestFederalRate>
  <rr:ObjectiveHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_2">Investment objective</rr:ObjectiveHeading>
  <rr:PerformancePastDoesNotIndicateFuture contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_44">Past investment results (before and after taxes) are not predictive of future investment results.</rr:PerformancePastDoesNotIndicateFuture>
  <rr:PerformanceAdditionalMarketIndex contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_42">The Lipper Intermediate Municipal Debt Funds Average includes the fund and other
funds that disclose investment objectives and/or strategies reasonably comparable
to the fund&apos;s objective and/or strategies.</rr:PerformanceAdditionalMarketIndex>
  <rr:RiskLoseMoney contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_37">You may lose money by investing in the fund.</rr:RiskLoseMoney>
  <rr:RiskHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_35">Principal risks</rr:RiskHeading>
  <rr:ShareholderFeesCaption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_8">Shareholder fees (fees paid directly from your investment)</rr:ShareholderFeesCaption>
  <rr:ExpenseExampleByYearCaption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_20">Although your actual costs may be higher or lower, based on these assumptions your costs would be:</rr:ExpenseExampleByYearCaption>
  <rr:PortfolioTurnoverRate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" unitRef="pure" decimals="2" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_32">0.09</rr:PortfolioTurnoverRate>
  <rr:PerformanceTableNotRelevantToTaxDeferred contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_67">Your actual after-tax returns depend on your individual tax situation and likely will differ from the results shown above.</rr:PerformanceTableNotRelevantToTaxDeferred>
  <rr:BarChartHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_45">Calendar year total returns for Class A shares (Results do not include a sales charge; if a sales charge were included, results would be lower.)</rr:BarChartHeading>
  <rr:BarChartDoesNotReflectSalesLoads contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_47">(Results do not include a sales charges; if a sales charge were included, results would be lower.)</rr:BarChartDoesNotReflectSalesLoads>
  <rr:BarChartAndPerformanceTableHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_39">Investment results</rr:BarChartAndPerformanceTableHeading>
  <rr:ExpenseBreakpointMinimumInvestmentRequiredAmount contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" unitRef="iso4217_USD" decimals="0" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_7">500000</rr:ExpenseBreakpointMinimumInvestmentRequiredAmount>
  <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_41">The following bar chart shows how the fund&apos;s investment results have varied from
year to year, and the following table shows how the fund&apos;s average annual total
returns for various periods compare with different broad measures of market results.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
  <rr:BarChartClosingTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_64">&lt;tt&gt;Highest/Lowest quarterly results during this period were:&lt;br /&gt;&lt;br /&gt;Highest 5.60% (quarter ended September 30, 2009)&lt;br /&gt;&lt;br /&gt;Lowest -2.23% (quarter ended December 31, 2010)&lt;/tt&gt;</rr:BarChartClosingTextBlock>
  <rr:OperatingExpensesCaption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_13">Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)</rr:OperatingExpensesCaption>
  <rr:AverageAnnualReturnCaption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_69">Average annual total returns For the periods ended December 31, 2011 (with maximum sales charge):</rr:AverageAnnualReturnCaption>
  <rr:BarChartNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_46">&lt;tt&gt;The following bar chart shows how the fund&apos;s investment results have varied from&lt;br /&gt;year to year, and the following table shows how the fund&apos;s average annual total&lt;br /&gt;returns for various periods compare with different broad measures of market&lt;br /&gt;results.&lt;/tt&gt;</rr:BarChartNarrativeTextBlock>
  <rr:PortfolioTurnoverHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_30">Portfolio turnover</rr:PortfolioTurnoverHeading>
  <rr:RiskNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_36">&lt;tt&gt;This section describes the principal risks associated with the fund&apos;s principal&lt;br /&gt;investment strategies. You may lose money by investing in the fund. The&lt;br /&gt;likelihood of loss may be greater if you invest for a shorter period of time.&lt;br /&gt; &lt;br /&gt;Market conditions -- The prices of, and the income generated by, the securities&lt;br /&gt;held by the fund may decline due to market conditions and other factors, including &lt;br /&gt;those directly involving the issuers of securities held by the fund.&lt;br /&gt; &lt;br /&gt;Investing in bonds -- Rising interest rates will generally cause the prices of&lt;br /&gt;bonds and other debt securities to fall. Longer maturity debt securities may be&lt;br /&gt;subject to greater price fluctuations than shorter maturity debt securities. In&lt;br /&gt;addition, falling interest rates may cause an issuer to redeem, call or refinance &lt;br /&gt;a security before its stated maturity, which may result in the fund having to &lt;br /&gt;reinvest the proceeds in lower yielding securities.&lt;br /&gt; &lt;br /&gt;Bonds and other debt securities are subject to credit risk, which is the&lt;br /&gt;possibility that the credit strength of an issuer will weaken and/or an issuer&lt;br /&gt;of a debt security will fail to make timely payments of principal or interest&lt;br /&gt;and the security will go into default.&lt;br /&gt; &lt;br /&gt;Thinly traded securities -- There may be little trading in the secondary market&lt;br /&gt;for particular bonds or other debt securities, which may make them more&lt;br /&gt;difficult to value, acquire or sell.&lt;br /&gt; &lt;br /&gt;Credit and liquidity support -- Changes in the credit quality of banks and&lt;br /&gt;financial institutions providing credit and liquidity support features with&lt;br /&gt;respect to securities held by the fund could cause the values of these&lt;br /&gt;securities to decline.&lt;br /&gt; &lt;br /&gt;Investing in lower rated bonds -- Lower rated bonds and other lower rated debt&lt;br /&gt;securities generally have higher rates of interest and involve greater risk of&lt;br /&gt;default or price declines due to changes in the issuer&apos;s creditworthiness than&lt;br /&gt;those of higher quality debt securities. The market prices of these securities&lt;br /&gt;may fluctuate more than the prices of higher quality debt securities and may&lt;br /&gt;decline significantly in periods of general economic difficulty.&lt;br /&gt; &lt;br /&gt;Investing in similar municipal bonds -- Investing significantly in municipal&lt;br /&gt;obligations of issuers in the same state or backed by revenues of similar &lt;br /&gt;types of projects or industries may make the fund more susceptible to certain&lt;br /&gt;economic, political or regulatory occurrences. As a result, the potential for&lt;br /&gt;fluctuations in the fund&apos;s share price may increase.&lt;br /&gt; &lt;br /&gt;Management -- The investment adviser to the fund actively manages the fund&apos;s&lt;br /&gt;investments. Consequently, the fund is subject to the risk that the methods &lt;br /&gt;and analyses employed by the investment adviser in this process may not produce &lt;br /&gt;the desired results. This could cause the fund to lose value or its investment&lt;br /&gt;results to lag relevant benchmarks or other funds with similar objectives.&lt;br /&gt; &lt;br /&gt;Your investment in the fund is not a bank deposit and is not insured or&lt;br /&gt;guaranteed by the Federal Deposit Insurance Corporation or any other&lt;br /&gt;governmental agency, entity or person. You should consider how this fund &lt;br /&gt;fits into your overall investment program.&lt;/tt&gt;</rr:RiskNarrativeTextBlock>
  <rr:ExpenseHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_4">Fees and expenses of the fund</rr:ExpenseHeading>
  <rr:PerformanceTableOneClassOfAfterTaxShown contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_68">After-tax returns are shown only for Class A shares; after-tax returns for other share classes will vary.</rr:PerformanceTableOneClassOfAfterTaxShown>
  <rr:StrategyHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_33">Principal investment strategies</rr:StrategyHeading>
  <rr:PerformanceAvailabilityWebSiteAddress contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_43">americanfunds.com</rr:PerformanceAvailabilityWebSiteAddress>
  <rr:PerformanceNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_40">&lt;tt&gt;The following bar chart shows how the fund&apos;s investment results have varied from&lt;br /&gt;year to year, and the following table shows how the fund&apos;s average annual total&lt;br /&gt;returns for various periods compare with different broad measures of market&lt;br /&gt;results. This information provides some indication of the risks of investing in&lt;br /&gt;the fund. The Lipper Intermediate Municipal Debt Funds Average includes the fund&lt;br /&gt;and other funds that disclose investment objectives and/or strategies reasonably&lt;br /&gt;comparable to the fund&apos;s objective and/or strategies. Past investment results&lt;br /&gt;(before and after taxes) are not predictive of future investment results.&lt;br /&gt;Updated information on the fund&apos;s investment results can be obtained by &lt;br /&gt;visiting americanfunds.com.&lt;/tt&gt;</rr:PerformanceNarrativeTextBlock>
  <rr:ExpenseNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_5">&lt;tt&gt;This table describes the fees and expenses that you may pay if you buy and hold&lt;br /&gt;shares of the fund. You may qualify for sales charge discounts if you and your&lt;br /&gt;family invest, or agree to invest in the future, at least $500,000 in American&lt;br /&gt;Funds. More information about these and other discounts is available from your&lt;br /&gt;financial professional and in the "Sales charge reductions and waivers" section&lt;br /&gt;on page 48 of the prospectus and on page 70 of the fund&apos;s statement of&lt;br /&gt;additional information.&lt;/tt&gt;</rr:ExpenseNarrativeTextBlock>
  <rr:AnnualFundOperatingExpensesTableTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_106">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/OperatingExpensesData_S000009237Member1 column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:AnnualFundOperatingExpensesTableTextBlock>
  <rr:ExpenseExampleNoRedemptionByYearCaption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_25">For the share classes listed below, you would pay the following if you did not redeem your shares:</rr:ExpenseExampleNoRedemptionByYearCaption>
  <rr:PerformanceTableTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_107">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/PerformanceTableData_S000009237Member1 column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * column rr_PerformanceMeasureAxis compact * row primary compact *  ~&lt;/div&gt;</rr:PerformanceTableTextBlock>
  <rr:PerformanceTableNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_65">&lt;tt&gt;After-tax returns are shown only for Class A shares; after-tax returns for &lt;br /&gt;other share classes will vary. After-tax returns are calculated using the &lt;br /&gt;highest individual federal income tax rates in effect during each year of &lt;br /&gt;the periods shown and do not reflect the impact of state and local taxes. &lt;br /&gt;Your actual after-tax returns depend on your individual tax situation and &lt;br /&gt;likely will differ from the results shown above.&lt;/tt&gt;</rr:PerformanceTableNarrativeTextBlock>
  <rr:RiskNotInsuredDepositoryInstitution contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_38">Your investment in the fund is not a bank deposit and is not insured or guaranteed by
the Federal Deposit Insurance Corporation or any other governmental agency, entity or
person.</rr:RiskNotInsuredDepositoryInstitution>
  <rr:ExpenseExampleNoRedemptionTableTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_105">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/ExpenseExampleNoRedemption_S000009237Member1 column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:ExpenseExampleNoRedemptionTableTextBlock>
  <rr:PerformanceTableFootnotesTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_101">&lt;tt&gt;Class A annualized 30-day yield at July 31, 2012: 1.12%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&lt;br /&gt;(For current yield information, please call American FundsLine&amp;#xAE; &lt;br /&gt;at 800/325-3590.)&lt;/tt&gt;</rr:PerformanceTableFootnotesTextBlock>
  <rr:ShareholderFeesTableTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1001_103">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/ShareholderFeesData_S000009237Member1 column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:ShareholderFeesTableTextBlock>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602440x-9984086" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_2001_92">Lipper Intermediate Municipal Debt Funds Average (reflects no deductions for sales charges, account fees or taxes)</rr:AverageAnnualReturnLabel>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602440x-9984086" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_2001_93">0.0860</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602440x-9984086" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_2001_94">0.0449</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602440x-9984086" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_2001_95">0.0431</rr:AverageAnnualReturnYear10>
  <rr:AverageAnnualReturnSinceInception contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602440x-9984086" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_2001_96">0.0463</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602440x-9984086" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_2001_97">1993-10-06</rr:AverageAnnualReturnInceptionDate>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602440x-9984087" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_3001_86">Barclays Municipal Short-Intermediate 1-10 Years Index (reflects no deductions for sales charges, account fees, expenses or taxes)</rr:AverageAnnualReturnLabel>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602440x-9984087" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_3001_87">0.0676</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602440x-9984087" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_3001_88">0.0520</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602440x-9984087" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_3001_89">0.0460</rr:AverageAnnualReturnYear10>
  <rr:AverageAnnualReturnSinceInception contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602440x-9984087" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_3001_90">0.0484</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602440x-9984087" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_3001_91">1993-10-06</rr:AverageAnnualReturnInceptionDate>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602440x602366_602488x-9981405" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_4002_81">Share class A - After taxes on distributions and sale of fund shares</rr:AverageAnnualReturnLabel>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602440x602366_602488x-9981405" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_4002_82">0.0411</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602440x602366_602488x-9981405" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_4002_83">0.0380</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602440x602366_602488x-9981405" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_4002_84">0.0386</rr:AverageAnnualReturnYear10>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602440x602366_602488x-9981405" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_4002_85">1993-10-06</rr:AverageAnnualReturnInceptionDate>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602440x602395_602488x-9981405" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_5002_76">Share class A - After taxes on distributions</rr:AverageAnnualReturnLabel>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602440x602395_602488x-9981405" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_5002_77">0.0477</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602440x602395_602488x-9981405" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_5002_78">0.0391</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602440x602395_602488x-9981405" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_5002_79">0.0395</rr:AverageAnnualReturnYear10>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602440x602395_602488x-9981405" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_5002_80">1993-10-06</rr:AverageAnnualReturnInceptionDate>
  <dei:TradingSymbol contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981400" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1006_0">LTEFX</dei:TradingSymbol>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981400" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1006_9">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981400" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1006_70">Share classes F-2 - before taxes</rr:AverageAnnualReturnLabel>
  <rr:ExpenseExampleYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981400" unitRef="iso4217_USD" decimals="0" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1006_21">39</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981400" unitRef="iso4217_USD" decimals="0" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1006_22">122</rr:ExpenseExampleYear03>
  <rr:ExpenseExampleYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981400" unitRef="iso4217_USD" decimals="0" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1006_24">480</rr:ExpenseExampleYear10>
  <rr:RedemptionFeeOverRedemption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981400" unitRef="pure" decimals="2" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1006_12">0.00</rr:RedemptionFeeOverRedemption>
  <rr:ExpenseExampleYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981400" unitRef="iso4217_USD" decimals="0" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1006_23">213</rr:ExpenseExampleYear05>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981400" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1006_71">0.0772</rr:AverageAnnualReturnYear01>
  <rr:OtherExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981400" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1006_16">0.0013</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981400" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1006_14">0.0025</rr:ManagementFeesOverAssets>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981400" unitRef="pure" decimals="2" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1006_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981400" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1006_15">0.0000</rr:DistributionAndService12b1FeesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981400" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1006_17">0.0038</rr:ExpensesOverAssets>
  <rr:AverageAnnualReturnSinceInception contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981400" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1006_74">0.0534</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981400" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1006_75">2008-08-18</rr:AverageAnnualReturnInceptionDate>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981400" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1006_10">0.0000</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981402" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1005_0">LTXFX</dei:TradingSymbol>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981402" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1005_9">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981402" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1005_70">Share classes F-1 - before taxes</rr:AverageAnnualReturnLabel>
  <rr:ExpenseExampleYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981402" unitRef="iso4217_USD" decimals="0" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1005_21">66</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981402" unitRef="iso4217_USD" decimals="0" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1005_22">208</rr:ExpenseExampleYear03>
  <rr:ExpenseExampleYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981402" unitRef="iso4217_USD" decimals="0" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1005_24">810</rr:ExpenseExampleYear10>
  <rr:RedemptionFeeOverRedemption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981402" unitRef="pure" decimals="2" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1005_12">0.00</rr:RedemptionFeeOverRedemption>
  <rr:ExpenseExampleYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981402" unitRef="iso4217_USD" decimals="0" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1005_23">362</rr:ExpenseExampleYear05>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981402" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1005_71">0.0743</rr:AverageAnnualReturnYear01>
  <rr:OtherExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981402" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1005_16">0.0015</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981402" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1005_14">0.0025</rr:ManagementFeesOverAssets>
  <rr:AverageAnnualReturnYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981402" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1005_72">0.0441</rr:AverageAnnualReturnYear05>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981402" unitRef="pure" decimals="2" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1005_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981402" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1005_15">0.0025</rr:DistributionAndService12b1FeesOverAssets>
  <rr:AverageAnnualReturnYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981402" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1005_73">0.0416</rr:AverageAnnualReturnYear10>
  <rr:ExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981402" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1005_17">0.0065</rr:ExpensesOverAssets>
  <rr:AverageAnnualReturnSinceInception contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981402" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1005_74">0.0409</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981402" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1005_75">2001-03-15</rr:AverageAnnualReturnInceptionDate>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981402" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1005_10">0.0000</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981403" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1004_0">LTXCX</dei:TradingSymbol>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981403" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1004_9">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981403" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1004_70">Share classes C - before taxes</rr:AverageAnnualReturnLabel>
  <rr:ExpenseExampleYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981403" unitRef="iso4217_USD" decimals="0" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1004_21">236</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleNoRedemptionYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981403" unitRef="iso4217_USD" decimals="0" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1004_26">136</rr:ExpenseExampleNoRedemptionYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981403" unitRef="iso4217_USD" decimals="0" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1004_22">425</rr:ExpenseExampleYear03>
  <rr:ExpenseExampleYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981403" unitRef="iso4217_USD" decimals="0" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1004_24">1613</rr:ExpenseExampleYear10>
  <rr:RedemptionFeeOverRedemption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981403" unitRef="pure" decimals="2" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1004_12">0.00</rr:RedemptionFeeOverRedemption>
  <rr:ExpenseExampleYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981403" unitRef="iso4217_USD" decimals="0" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1004_23">734</rr:ExpenseExampleYear05>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981403" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1004_71">0.0569</rr:AverageAnnualReturnYear01>
  <rr:OtherExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981403" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1004_16">0.0009</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981403" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1004_14">0.0025</rr:ManagementFeesOverAssets>
  <rr:ExpenseExampleNoRedemptionYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981403" unitRef="iso4217_USD" decimals="0" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1004_29">1613</rr:ExpenseExampleNoRedemptionYear10>
  <rr:AverageAnnualReturnYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981403" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1004_72">0.0366</rr:AverageAnnualReturnYear05>
  <rr:ExpenseExampleNoRedemptionYear03 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981403" unitRef="iso4217_USD" decimals="0" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1004_27">425</rr:ExpenseExampleNoRedemptionYear03>
  <rr:ExpenseExampleNoRedemptionYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981403" unitRef="iso4217_USD" decimals="0" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1004_28">734</rr:ExpenseExampleNoRedemptionYear05>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981403" unitRef="pure" decimals="2" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1004_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981403" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1004_15">0.0100</rr:DistributionAndService12b1FeesOverAssets>
  <rr:AverageAnnualReturnYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981403" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1004_73">0.0341</rr:AverageAnnualReturnYear10>
  <rr:ExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981403" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1004_17">0.0134</rr:ExpensesOverAssets>
  <rr:AverageAnnualReturnSinceInception contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981403" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1004_74">0.0340</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981403" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1004_75">2001-03-15</rr:AverageAnnualReturnInceptionDate>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981403" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1004_10">0.0100</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981404" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1003_0">LTXBX</dei:TradingSymbol>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981404" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1003_9">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981404" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1003_70">Share classes B - before taxes</rr:AverageAnnualReturnLabel>
  <rr:ExpenseExampleYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981404" unitRef="iso4217_USD" decimals="0" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1003_21">632</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleNoRedemptionYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981404" unitRef="iso4217_USD" decimals="0" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1003_26">132</rr:ExpenseExampleNoRedemptionYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981404" unitRef="iso4217_USD" decimals="0" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1003_22">812</rr:ExpenseExampleYear03>
  <rr:ExpenseExampleYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981404" unitRef="iso4217_USD" decimals="0" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1003_24">1375</rr:ExpenseExampleYear10>
  <rr:RedemptionFeeOverRedemption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981404" unitRef="pure" decimals="2" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1003_12">0.00</rr:RedemptionFeeOverRedemption>
  <rr:ExpenseExampleYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981404" unitRef="iso4217_USD" decimals="0" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1003_23">913</rr:ExpenseExampleYear05>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981404" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1003_71">0.0174</rr:AverageAnnualReturnYear01>
  <rr:OtherExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981404" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1003_16">0.0005</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981404" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1003_14">0.0025</rr:ManagementFeesOverAssets>
  <rr:ExpenseExampleNoRedemptionYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981404" unitRef="iso4217_USD" decimals="0" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1003_29">1375</rr:ExpenseExampleNoRedemptionYear10>
  <rr:AverageAnnualReturnYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981404" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1003_72">0.0336</rr:AverageAnnualReturnYear05>
  <rr:ExpenseExampleNoRedemptionYear03 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981404" unitRef="iso4217_USD" decimals="0" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1003_27">412</rr:ExpenseExampleNoRedemptionYear03>
  <rr:ExpenseExampleNoRedemptionYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981404" unitRef="iso4217_USD" decimals="0" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1003_28">713</rr:ExpenseExampleNoRedemptionYear05>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981404" unitRef="pure" decimals="2" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1003_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981404" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1003_15">0.0100</rr:DistributionAndService12b1FeesOverAssets>
  <rr:AverageAnnualReturnYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981404" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1003_73">0.0363</rr:AverageAnnualReturnYear10>
  <rr:ExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981404" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1003_17">0.0130</rr:ExpensesOverAssets>
  <rr:AverageAnnualReturnSinceInception contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981404" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1003_74">0.0409</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981404" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1003_75">2000-03-15</rr:AverageAnnualReturnInceptionDate>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981404" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1003_10">0.0500</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981405" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1002_0">LTEBX</dei:TradingSymbol>
  <rr:AnnualReturn2002 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981405" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1002_48">0.0781</rr:AnnualReturn2002>
  <rr:LowestQuarterlyReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981405" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1002_61">Lowest</rr:LowestQuarterlyReturnLabel>
  <rr:HighestQuarterlyReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981405" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1002_58">Highest</rr:HighestQuarterlyReturnLabel>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981405" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1002_9">0.0250</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:ThirtyDayYieldPhone contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981405" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1002_99">800/325-3590</rr:ThirtyDayYieldPhone>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981405" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1002_70">Share class A - Before taxes </rr:AverageAnnualReturnLabel>
  <rr:ExpenseExampleYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981405" unitRef="iso4217_USD" decimals="0" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1002_21">310</rr:ExpenseExampleYear01>
  <rr:BarChartHighestQuarterlyReturnDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981405" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1002_60">2009-09-30</rr:BarChartHighestQuarterlyReturnDate>
  <rr:ThirtyDayYield contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981405" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1002_100">0.0112</rr:ThirtyDayYield>
  <rr:ExpenseExampleYear03 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981405" unitRef="iso4217_USD" decimals="0" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1002_22">437</rr:ExpenseExampleYear03>
  <rr:BarChartLowestQuarterlyReturn contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981405" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1002_62">-0.0223</rr:BarChartLowestQuarterlyReturn>
  <rr:AnnualReturn2004 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981405" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1002_50">0.0277</rr:AnnualReturn2004>
  <rr:AnnualReturn2010 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981405" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1002_56">0.0364</rr:AnnualReturn2010>
  <rr:ExpenseExampleYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981405" unitRef="iso4217_USD" decimals="0" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1002_24">981</rr:ExpenseExampleYear10>
  <rr:RedemptionFeeOverRedemption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981405" unitRef="pure" decimals="2" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1002_12">0.00</rr:RedemptionFeeOverRedemption>
  <rr:ExpenseExampleYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981405" unitRef="iso4217_USD" decimals="0" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1002_23">576</rr:ExpenseExampleYear05>
  <rr:AnnualReturn2007 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981405" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1002_53">0.0324</rr:AnnualReturn2007>
  <rr:BarChartHighestQuarterlyReturn contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981405" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1002_59">0.0560</rr:BarChartHighestQuarterlyReturn>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981405" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1002_71">0.0477</rr:AverageAnnualReturnYear01>
  <rr:OtherExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981405" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1002_16">0.0005</rr:OtherExpensesOverAssets>
  <rr:AnnualReturn2008 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981405" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1002_54">-0.0131</rr:AnnualReturn2008>
  <rr:ManagementFeesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981405" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1002_14">0.0025</rr:ManagementFeesOverAssets>
  <rr:BarChartLowestQuarterlyReturnDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981405" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1002_63">2010-12-31</rr:BarChartLowestQuarterlyReturnDate>
  <rr:AnnualReturn2009 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981405" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1002_55">0.0945</rr:AnnualReturn2009>
  <rr:AverageAnnualReturnYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981405" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1002_72">0.0391</rr:AverageAnnualReturnYear05>
  <rr:AnnualReturn2005 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981405" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1002_51">0.0157</rr:AnnualReturn2005>
  <rr:AnnualReturn2011 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981405" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1002_57">0.0748</rr:AnnualReturn2011>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981405" unitRef="pure" decimals="2" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1002_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:AnnualReturn2003 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981405" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1002_49">0.0428</rr:AnnualReturn2003>
  <rr:ThirtyDayYieldCaption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981405" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1002_98">Class A annualized 30-day yield at July 31, 2012:</rr:ThirtyDayYieldCaption>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981405" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1002_15">0.0030</rr:DistributionAndService12b1FeesOverAssets>
  <rr:AverageAnnualReturnYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981405" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1002_73">0.0395</rr:AverageAnnualReturnYear10>
  <rr:ExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981405" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1002_17">0.0060</rr:ExpensesOverAssets>
  <rr:AnnualReturn2006 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981405" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1002_52">0.0361</rr:AnnualReturn2006>
  <rr:AverageAnnualReturnSinceInception contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981405" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1002_74">0.0444</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981405" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1002_75">1993-10-06</rr:AverageAnnualReturnInceptionDate>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981388_602238x-9981383_602488x-9981405" unitRef="pure" decimals="4" id="id_303144_29D4A3C1-1F11-4988-8D46-3120D7D6DC6A_1002_10">0.0100</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <rr:PortfolioTurnoverTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1001_23">&lt;tt&gt;The fund pays transaction costs, such as commissions, when it buys and sells &lt;br /&gt;securities (or "turns over" its portfolio). A higher portfolio turnover rate &lt;br /&gt;may indicate higher transaction costs and may result in higher taxes when &lt;br /&gt;fund shares are held in a taxable account. These costs, which are not reflected &lt;br /&gt;in annual fund operating expenses or in the example, affect the fund&apos;s investment &lt;br /&gt;results. During the most recent fiscal year, the fund&apos;s portfolio turnover rate &lt;br /&gt;was 20% of the average value of its portfolio.&lt;/tt&gt;</rr:PortfolioTurnoverTextBlock>
  <rr:ExpenseExampleWithRedemptionTableTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1001_104">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/ExpenseExample_S000009229Member2 column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:ExpenseExampleWithRedemptionTableTextBlock>
  <rr:BarChartTableTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1001_102">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/BarChartData_S000009229Member2 column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:BarChartTableTextBlock>
  <rr:ObjectivePrimaryTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1001_2">&lt;tt&gt;The fund&apos;s investment objective is to provide you with a high level of current&lt;br /&gt;income exempt from regular federal income tax.&lt;/tt&gt;</rr:ObjectivePrimaryTextBlock>
  <rr:ExpenseExampleNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1001_16">&lt;tt&gt;This example is intended to help you compare the cost of investing in the &lt;br /&gt;fund with the cost of investing in other mutual funds.&lt;br /&gt; &lt;br /&gt;The example assumes that you invest $10,000 in the fund for the time periods&lt;br /&gt;indicated and then redeem all of your shares at the end of those periods. The&lt;br /&gt;example also assumes that your investment has a 5% return each year and that &lt;br /&gt;the fund&apos;s operating expenses remain the same.&lt;/tt&gt;</rr:ExpenseExampleNarrativeTextBlock>
  <rr:StrategyNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1001_26">&lt;tt&gt;In seeking to achieve its objective, the fund may forego opportunities that&lt;br /&gt;would result in capital gains and may accept prudent risks to capital value, &lt;br /&gt;in each case to take advantage of opportunities for higher current income.&lt;br /&gt; &lt;br /&gt;Under normal circumstances, the fund will invest at least 80% of its assets &lt;br /&gt;in, or derive at least 80% of its income from, securities that are exempt &lt;br /&gt;from regular federal income tax. The fund may invest, without limitation, in&lt;br /&gt;securities that may subject you to federal alternative minimum tax. The fund&lt;br /&gt;invests a significant portion of its portfolio in municipal bonds rated BBB+ &lt;br /&gt;or below or Baa1 or below by Nationally Recognized Statistical Rating &lt;br /&gt;Organizations designated by the fund&apos;s investment adviser, or unrated but &lt;br /&gt;determined by the fund&apos;s investment adviser to be of equivalent quality. &lt;br /&gt;Securities rated BB+ or below and Ba1 or below are sometimes referred to as &lt;br /&gt;"junk bonds." Some of the securities in which the fund invests may have credit &lt;br /&gt;and liquidity support features, including guarantees and letters of credit.&lt;br /&gt; &lt;br /&gt;In addition, the fund may invest significantly in municipal obligations of&lt;br /&gt;issuers in the same state, or engaged in the same types of projects or&lt;br /&gt;industries.&lt;br /&gt;&lt;br /&gt;The investment adviser uses a system of multiple portfolio counselors in&lt;br /&gt;managing the fund&apos;s assets. Under this approach, the portfolio of the fund is&lt;br /&gt;divided into segments managed by individual counselors who decide how their&lt;br /&gt;respective segments will be invested.&lt;br /&gt; &lt;br /&gt;The fund relies on the professional judgment of its investment adviser to make&lt;br /&gt;decisions about the fund&apos;s portfolio investments. The basic investment philosophy &lt;br /&gt;of the investment adviser is to seek to invest in attractively priced securities &lt;br /&gt;that, in its opinion, represent good, long-term investment opportunities. The &lt;br /&gt;investment adviser believes that an important way to accomplish this is by &lt;br /&gt;analyzing various factors, which may include the credit strength of the issuer, &lt;br /&gt;prices of similar securities issued by comparable issuers, anticipated changes &lt;br /&gt;in interest rates, general market conditions and other factors pertinent to the &lt;br /&gt;particular security being evaluated. Securities may be sold when the investment &lt;br /&gt;adviser believes that they no longer represent relatively attractive investment &lt;br /&gt;opportunities.&lt;/tt&gt;</rr:StrategyNarrativeTextBlock>
  <rr:RiskReturnHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1001_0">American High-Income Municipal Bond Fund&#174;</rr:RiskReturnHeading>
  <rr:ExpenseExampleHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1001_15">Example</rr:ExpenseExampleHeading>
  <rr:PerformanceTableUsesHighestFederalRate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1001_61">After-tax returns are calculated using the highest individual federal
income tax rates in effect during each year of the periods shown and
do not reflect the impact of state and local taxes.</rr:PerformanceTableUsesHighestFederalRate>
  <rr:ObjectiveHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1001_1">Investment objective</rr:ObjectiveHeading>
  <rr:PerformancePastDoesNotIndicateFuture contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1001_36">Past investment results (before and after taxes) are not predictive of future investment results.</rr:PerformancePastDoesNotIndicateFuture>
  <rr:PerformanceAdditionalMarketIndex contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1001_34">The Barclays High Yield Municipal Bond Index is a market-value-weighted index composed of municipal bonds rated below BBB/Baa. The Lipper High Yield Municipal Debt Funds Average includes the fund and other funds that disclose investment objectives and/or strategies reasonably comparable to the fund&apos;s objective and/or strategies.</rr:PerformanceAdditionalMarketIndex>
  <rr:RiskLoseMoney contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1001_29">You may lose money by investing in the fund.</rr:RiskLoseMoney>
  <rr:RiskHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1001_27">Principal risks</rr:RiskHeading>
  <rr:ShareholderFeesCaption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1001_5">Shareholder fees (fees paid directly from your investment)</rr:ShareholderFeesCaption>
  <rr:ExpenseExampleByYearCaption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1001_17">Although your actual costs may be higher or lower, based on these assumptions your costs would be:</rr:ExpenseExampleByYearCaption>
  <rr:PortfolioTurnoverRate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384" unitRef="pure" decimals="2" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1001_24">0.20</rr:PortfolioTurnoverRate>
  <rr:PerformanceTableNotRelevantToTaxDeferred contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1001_62">Your actual after-tax returns depend on your individual tax situation and likely will differ from the results shown above.</rr:PerformanceTableNotRelevantToTaxDeferred>
  <rr:BarChartHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1001_37">Calendar year total returns for Class A Shares (Results do not include a
sales charge; if a sales charge were included, results would be lower.)</rr:BarChartHeading>
  <rr:BarChartDoesNotReflectSalesLoads contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1001_39">Results do not include a sales charge; if a sales charge were included, results would be lower.)</rr:BarChartDoesNotReflectSalesLoads>
  <rr:BarChartAndPerformanceTableHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1001_31">Investment results</rr:BarChartAndPerformanceTableHeading>
  <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1001_33">The following bar chart shows how the fund&apos;s investment results have varied
from year to year, and the following table shows how the fund&apos;s average
annual total returns for various periods compare with different broad measures
of market results.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
  <rr:BarChartClosingTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1001_59">&lt;tt&gt;Highest/Lowest quarterly results during this period were.&lt;br /&gt;&lt;br /&gt;Highest&amp;#xA0;&amp;#xA0;11.55% (quarter ended September 30, 2009)&lt;br /&gt;&lt;br /&gt;Lowest&amp;#xA0;&amp;#xA0;-13.96% (quarter ended December 31, 2008)&lt;br /&gt;&lt;br /&gt;The fund&apos;s total return for the six months ended &lt;br /&gt;June 30, 2012 was 7.99%.&lt;/tt&gt;</rr:BarChartClosingTextBlock>
  <rr:OperatingExpensesCaption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1001_10">Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)</rr:OperatingExpensesCaption>
  <rr:AverageAnnualReturnCaption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1001_64">Average annual total returns For the periods ended December 31, 2011 (with maximum sales charge):</rr:AverageAnnualReturnCaption>
  <rr:BarChartNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1001_38">&lt;tt&gt;The following bar chart shows how the fund&apos;s investment results have varied from&lt;br /&gt;year to year, and the following table shows how the fund&apos;s average annual total&lt;br /&gt;returns for various periods compare with different broad measures of market&lt;br /&gt;results.&lt;/tt&gt;</rr:BarChartNarrativeTextBlock>
  <rr:PortfolioTurnoverHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1001_22">Portfolio turnover</rr:PortfolioTurnoverHeading>
  <rr:RiskNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1001_28">&lt;tt&gt;This section describes the principal risks associated with the fund&apos;s principal&lt;br /&gt;investment strategies. You may lose money by investing in the fund. The likelihood &lt;br /&gt;of loss may be greater if you invest for a shorter period of time.&lt;br /&gt; &lt;br /&gt;Market conditions -- The prices of, and the income generated by, the securities&lt;br /&gt;held by the fund may decline due to market conditions and other factors,&lt;br /&gt;including those directly involving the issuers of securities held by the fund.&lt;br /&gt; &lt;br /&gt;Investing in bonds -- Rising interest rates will generally cause the prices of&lt;br /&gt;bonds and other debt securities to fall. Longer maturity debt securities may be&lt;br /&gt;subject to greater price fluctuations than shorter maturity debt securities. &lt;br /&gt;In addition, falling interest rates may cause an issuer to redeem, call or &lt;br /&gt;refinance a security before its stated maturity, which may result in the fund &lt;br /&gt;having to reinvest the proceeds in lower yielding securities.&lt;br /&gt; &lt;br /&gt;Bonds and other debt securities are subject to credit risk, which is the&lt;br /&gt;possibility that the credit strength of an issuer will weaken and/or an issuer&lt;br /&gt;of a debt security will fail to make timely payments of principal or interest&lt;br /&gt;and the security will go into default.&lt;br /&gt; &lt;br /&gt;Thinly traded securities -- There may be little trading in the secondary market&lt;br /&gt;for particular bonds or other debt securities, which may make them more&lt;br /&gt;difficult to value, acquire or sell.&lt;br /&gt; &lt;br /&gt;Credit and liquidity support -- Changes in the credit quality of banks and&lt;br /&gt;financial institutions providing credit and liquidity support features with&lt;br /&gt;respect to securities held by the fund could cause the values of these&lt;br /&gt;securities to decline.&lt;br /&gt;&amp;#xA0;&amp;#xA0;&lt;br /&gt;Investing in lower rated bonds -- Lower rated bonds and other lower rated debt&lt;br /&gt;securities generally have higher rates of interest and involve greater risk of&lt;br /&gt;default or price declines due to changes in the issuer&apos;s creditworthiness than&lt;br /&gt;those of higher quality debt securities. The market prices of these securities&lt;br /&gt;may fluctuate more than the prices of higher quality debt securities and may&lt;br /&gt;decline significantly in periods of general economic difficulty. These risks &lt;br /&gt;may be increased with respect to investments in junk bonds.&lt;br /&gt; &lt;br /&gt;Investing in similar municipal bonds -- Investing significantly in municipal&lt;br /&gt;obligations of issuers in the same state or backed by revenues of similar types&lt;br /&gt;of projects or industries may make the fund more susceptible to certain economic, &lt;br /&gt;political or regulatory occurrences. As a result, the potential for fluctuations &lt;br /&gt;in the fund&apos;s share price may increase.&lt;br /&gt; &lt;br /&gt;Management -- The investment adviser to the fund actively manages the fund&apos;s&lt;br /&gt;investments. Consequently, the fund is subject to the risk that the methods and&lt;br /&gt;analyses employed by the investment adviser in this process may not produce the&lt;br /&gt;desired results. This could cause the fund to lose value or its investment&lt;br /&gt;results to lag relevant benchmarks or other funds with similar objectives.&lt;br /&gt; &lt;br /&gt;Your investment in the fund is not a bank deposit and is not insured or guaranteed &lt;br /&gt;by the Federal Deposit Insurance Corporation or any other governmental agency, &lt;br /&gt;entity or person. You should consider how this fund fits into your overall &lt;br /&gt;investment program.&lt;/tt&gt;</rr:RiskNarrativeTextBlock>
  <rr:ExpenseHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1001_3">Fees and expenses of the fund</rr:ExpenseHeading>
  <rr:PerformanceTableOneClassOfAfterTaxShown contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1001_63">After-tax returns are shown only for Class A shares;</rr:PerformanceTableOneClassOfAfterTaxShown>
  <rr:StrategyHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1001_25">Principal investment strategies</rr:StrategyHeading>
  <rr:PerformanceAvailabilityWebSiteAddress contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1001_35">americanfunds.com</rr:PerformanceAvailabilityWebSiteAddress>
  <rr:PerformanceNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1001_32">&lt;tt&gt;The following bar chart shows how the fund&apos;s investment results have varied from&lt;br /&gt;year to year, and the following table shows how the fund&apos;s average annual total&lt;br /&gt;returns for various periods compare with different broad measures of market&lt;br /&gt;results. This information provides some indication of the risks of investing in&lt;br /&gt;the fund. The Barclays High Yield Municipal Bond Index is a market-value-weighted &lt;br /&gt;index composed of municipal bonds rated below BBB/Baa. The Lipper High Yield &lt;br /&gt;Municipal Debt Funds Average includes the fund and other funds that disclose &lt;br /&gt;investment objectives and/or strategies reasonably comparable to the fund&apos;s &lt;br /&gt;objective and/or strategies. Past investment results (before and after taxes) &lt;br /&gt;are not predictive of future investment results. Updated information on the &lt;br /&gt;fund&apos;s investment results can be obtained by visiting americanfunds.com. &lt;br /&gt;Investment results for Class R-6 shares are not presented because the class &lt;br /&gt;had not commenced operations as of December 31, 2011. However, results for &lt;br /&gt;Class A shares are presented because Class A is the class of shares with the &lt;br /&gt;longest period of operation. Other share classes, including Class R-6 shares, &lt;br /&gt;have different expenses and therefore different investment results.&lt;/tt&gt;</rr:PerformanceNarrativeTextBlock>
  <rr:ExpenseNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1001_4">&lt;tt&gt;This table describes the fees and expenses that you may pay if you buy and hold&lt;br /&gt;shares of the fund.&lt;/tt&gt;</rr:ExpenseNarrativeTextBlock>
  <rr:AnnualFundOperatingExpensesTableTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1001_105">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/OperatingExpensesData_S000009229Member2 column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:AnnualFundOperatingExpensesTableTextBlock>
  <rr:PerformanceTableTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1001_106">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/PerformanceTableData_S000009229Member2 column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * column rr_PerformanceMeasureAxis compact * row primary compact *  ~&lt;/div&gt;</rr:PerformanceTableTextBlock>
  <rr:PerformanceTableNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1001_60">&lt;tt&gt;After-tax returns are shown only for Class A shares; after-tax returns for other&lt;br /&gt;share classes will vary. After-tax returns are calculated using the highest&lt;br /&gt;individual federal income tax rates in effect during each year of the periods&lt;br /&gt;shown and do not reflect the impact of state and local taxes. Your actual&lt;br /&gt;after-tax returns depend on your individual tax situation and likely will differ&lt;br /&gt;from the results shown above.&lt;/tt&gt;</rr:PerformanceTableNarrativeTextBlock>
  <rr:RiskNotInsuredDepositoryInstitution contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1001_30">Your investment in the fund is not a bank deposit and is not insured or
guaranteed by the Federal Deposit Insurance Corporation or any other
governmental agency, entity or person.</rr:RiskNotInsuredDepositoryInstitution>
  <rr:PerformanceTableFootnotesTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1001_101">&lt;tt&gt;Class A annualized 30-day yield at July 31, 2012: 3.39%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&lt;br /&gt;(For current yield information, please call American FundsLine&amp;#xAE; &lt;br /&gt;at 800/325-3590.)&lt;/tt&gt;</rr:PerformanceTableFootnotesTextBlock>
  <rr:ShareholderFeesTableTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1001_103">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/ShareholderFeesData_S000009229Member2 column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:ShareholderFeesTableTextBlock>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602440x-9984149" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_2001_92">Lipper High Yield Municipal Debt Funds Average (reflects no deductions for sales charges, account fees or taxes)</rr:AverageAnnualReturnLabel>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602440x-9984149" unitRef="pure" decimals="4" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_2001_93">0.0994</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602440x-9984149" unitRef="pure" decimals="4" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_2001_94">0.0165</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602440x-9984149" unitRef="pure" decimals="4" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_2001_95">0.0416</rr:AverageAnnualReturnYear10>
  <rr:AverageAnnualReturnSinceInception contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602440x-9984149" unitRef="pure" decimals="4" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_2001_96">0.0493</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602440x-9984149" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_2001_97">1994-09-26</rr:AverageAnnualReturnInceptionDate>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602440x-9984160" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_3001_87">Barclays High Yield Municipal Bond Index (reflects no deductions for sales charges, account fees, expenses or taxes)</rr:AverageAnnualReturnLabel>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602440x-9984160" unitRef="pure" decimals="4" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_3001_88">0.0925</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602440x-9984160" unitRef="pure" decimals="4" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_3001_89">0.0220</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602440x-9984160" unitRef="pure" decimals="4" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_3001_90">0.0551</rr:AverageAnnualReturnYear10>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602440x-9984160" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_3001_91">1994-09-26</rr:AverageAnnualReturnInceptionDate>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602440x-9984166" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_4001_81">Barclays Municipal Bond Index (reflects no deductions for sales charges, account fees, expenses or taxes)</rr:AverageAnnualReturnLabel>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602440x-9984166" unitRef="pure" decimals="4" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_4001_82">0.1070</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602440x-9984166" unitRef="pure" decimals="4" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_4001_83">0.0522</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602440x-9984166" unitRef="pure" decimals="4" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_4001_84">0.0538</rr:AverageAnnualReturnYear10>
  <rr:AverageAnnualReturnSinceInception contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602440x-9984166" unitRef="pure" decimals="4" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_4001_85">0.0599</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602440x-9984166" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_4001_86">1994-09-26</rr:AverageAnnualReturnInceptionDate>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602440x602366_602488x-9981392" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_5002_76">Share class A - After taxes on distributions and sale of fund shares</rr:AverageAnnualReturnLabel>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602440x602366_602488x-9981392" unitRef="pure" decimals="4" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_5002_77">0.0547</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602440x602366_602488x-9981392" unitRef="pure" decimals="4" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_5002_78">0.0222</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602440x602366_602488x-9981392" unitRef="pure" decimals="4" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_5002_79">0.0394</rr:AverageAnnualReturnYear10>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602440x602366_602488x-9981392" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_5002_80">1994-09-26</rr:AverageAnnualReturnInceptionDate>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602440x602395_602488x-9981392" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_6002_71">Share class A - After taxes on distributions</rr:AverageAnnualReturnLabel>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602440x602395_602488x-9981392" unitRef="pure" decimals="4" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_6002_72">0.0575</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602440x602395_602488x-9981392" unitRef="pure" decimals="4" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_6002_73">0.0183</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602440x602395_602488x-9981392" unitRef="pure" decimals="4" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_6002_74">0.0382</rr:AverageAnnualReturnYear10>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602440x602395_602488x-9981392" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_6002_75">1994-09-26</rr:AverageAnnualReturnInceptionDate>
  <rr:AnnualReturn2002 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602488x-9981392" unitRef="pure" decimals="4" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1002_40">0.0624</rr:AnnualReturn2002>
  <rr:LowestQuarterlyReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602488x-9981392" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1002_56">Lowest</rr:LowestQuarterlyReturnLabel>
  <rr:HighestQuarterlyReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602488x-9981392" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1002_53">Highest</rr:HighestQuarterlyReturnLabel>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602488x-9981392" unitRef="pure" decimals="2" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1002_6">0.00</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:ThirtyDayYieldPhone contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602488x-9981392" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1002_99">800/325-3590</rr:ThirtyDayYieldPhone>
  <rr:BarChartYearToDateReturnDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602488x-9981392" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1002_52">2012-06-30</rr:BarChartYearToDateReturnDate>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602488x-9981392" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1002_65">Share class A - Before taxes</rr:AverageAnnualReturnLabel>
  <rr:ExpenseExampleYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602488x-9981392" unitRef="iso4217_USD" decimals="0" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1002_18">39</rr:ExpenseExampleYear01>
  <rr:BarChartHighestQuarterlyReturnDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602488x-9981392" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1002_55">2009-09-30</rr:BarChartHighestQuarterlyReturnDate>
  <rr:ThirtyDayYield contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602488x-9981392" unitRef="pure" decimals="4" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1002_100">0.0339</rr:ThirtyDayYield>
  <rr:ExpenseExampleYear03 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602488x-9981392" unitRef="iso4217_USD" decimals="0" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1002_19">122</rr:ExpenseExampleYear03>
  <rr:BarChartLowestQuarterlyReturn contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602488x-9981392" unitRef="pure" decimals="4" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1002_57">0.1396</rr:BarChartLowestQuarterlyReturn>
  <rr:AnnualReturn2004 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602488x-9981392" unitRef="pure" decimals="4" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1002_42">0.0566</rr:AnnualReturn2004>
  <rr:AnnualReturn2010 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602488x-9981392" unitRef="pure" decimals="4" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1002_48">0.0408</rr:AnnualReturn2010>
  <rr:ExpenseExampleYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602488x-9981392" unitRef="iso4217_USD" decimals="0" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1002_21">480</rr:ExpenseExampleYear10>
  <rr:ExpenseExampleYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602488x-9981392" unitRef="iso4217_USD" decimals="0" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1002_20">213</rr:ExpenseExampleYear05>
  <rr:AnnualReturn2007 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602488x-9981392" unitRef="pure" decimals="4" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1002_45">-0.0081</rr:AnnualReturn2007>
  <rr:BarChartHighestQuarterlyReturn contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602488x-9981392" unitRef="pure" decimals="4" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1002_54">0.1155</rr:BarChartHighestQuarterlyReturn>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602488x-9981392" unitRef="pure" decimals="4" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1002_66">0.0575</rr:AverageAnnualReturnYear01>
  <rr:OtherExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602488x-9981392" unitRef="pure" decimals="4" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1002_13">0.0004</rr:OtherExpensesOverAssets>
  <rr:AnnualReturn2008 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602488x-9981392" unitRef="pure" decimals="4" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1002_46">-0.1940</rr:AnnualReturn2008>
  <rr:ManagementFeesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602488x-9981392" unitRef="pure" decimals="4" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1002_11">0.0034</rr:ManagementFeesOverAssets>
  <rr:BarChartLowestQuarterlyReturnDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602488x-9981392" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1002_58">2008-12-31</rr:BarChartLowestQuarterlyReturnDate>
  <rr:AnnualReturn2009 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602488x-9981392" unitRef="pure" decimals="4" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1002_47">0.2444</rr:AnnualReturn2009>
  <rr:AverageAnnualReturnYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602488x-9981392" unitRef="pure" decimals="4" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1002_67">0.0183</rr:AverageAnnualReturnYear05>
  <rr:AnnualReturn2005 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602488x-9981392" unitRef="pure" decimals="4" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1002_43">0.0468</rr:AnnualReturn2005>
  <rr:YearToDateReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602488x-9981392" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1002_50">The fund&apos;s total return</rr:YearToDateReturnLabel>
  <rr:ExchangeFeeOverRedemption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602488x-9981392" unitRef="pure" decimals="2" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1002_9">0.00</rr:ExchangeFeeOverRedemption>
  <rr:AnnualReturn2011 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602488x-9981392" unitRef="pure" decimals="4" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1002_49">0.0990</rr:AnnualReturn2011>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602488x-9981392" unitRef="pure" decimals="2" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1002_8">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:AnnualReturn2003 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602488x-9981392" unitRef="pure" decimals="4" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1002_41">0.0624</rr:AnnualReturn2003>
  <rr:ThirtyDayYieldCaption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602488x-9981392" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1002_98">Class A annualized 30-day yield at July 31, 2012:</rr:ThirtyDayYieldCaption>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602488x-9981392" unitRef="pure" decimals="2" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1002_12">0.00</rr:DistributionAndService12b1FeesOverAssets>
  <rr:AverageAnnualReturnYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602488x-9981392" unitRef="pure" decimals="4" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1002_68">0.0382</rr:AverageAnnualReturnYear10>
  <rr:ExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602488x-9981392" unitRef="pure" decimals="4" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1002_14">0.0038</rr:ExpensesOverAssets>
  <rr:AnnualReturn2006 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602488x-9981392" unitRef="pure" decimals="4" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1002_44">0.0638</rr:AnnualReturn2006>
  <rr:AverageAnnualReturnSinceInception contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602488x-9981392" unitRef="pure" decimals="4" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1002_69">0.0514</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602488x-9981392" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1002_70">1994-09-26</rr:AverageAnnualReturnInceptionDate>
  <rr:BarChartYearToDateReturn contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602488x-9981392" unitRef="pure" decimals="4" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1002_51">0.0799</rr:BarChartYearToDateReturn>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981384_602488x-9981392" unitRef="pure" decimals="2" id="id_303144_872B57AB-AFD5-48A4-B2DE-A6E36AB74BAC_1002_7">0.00</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <rr:PortfolioTurnoverTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_31">&lt;tt&gt;The fund pays transaction costs, such as commissions, when it buys and sells &lt;br /&gt;securities (or "turns over" its portfolio). A higher portfolio turnover rate &lt;br /&gt;may indicate higher transaction costs and may result in higher taxes when &lt;br /&gt;fund shares are held in a taxable account. These costs, which are not reflected &lt;br /&gt;in annual fund operating expenses or in the example, affect the fund&apos;s investment &lt;br /&gt;results. During the most recent fiscal year, the fund&apos;s portfolio turnover rate &lt;br /&gt;was 20% of the average value of its portfolio.&lt;/tt&gt;</rr:PortfolioTurnoverTextBlock>
  <rr:ExpenseExampleWithRedemptionTableTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_112">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/ExpenseExample_S000009229Member1 column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:ExpenseExampleWithRedemptionTableTextBlock>
  <rr:BarChartTableTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_110">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/BarChartData_S000009229Member1 column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:BarChartTableTextBlock>
  <rr:ObjectivePrimaryTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_3">&lt;tt&gt;The fund&apos;s investment objective is to provide you with a high level of current&lt;br /&gt;income exempt from regular federal income tax.&lt;/tt&gt;</rr:ObjectivePrimaryTextBlock>
  <rr:ExpenseExampleNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_19">&lt;tt&gt;This example is intended to help you compare the cost of investing in the &lt;br /&gt;fund with the cost of investing in other mutual funds.&lt;br /&gt;&lt;br /&gt;The example assumes that you invest $10,000 in the fund for the time periods&lt;br /&gt;indicated and then redeem all of your shares at the end of those periods. The&lt;br /&gt;example also assumes that your investment has a 5% return each year and that &lt;br /&gt;the fund&apos;s operating expenses remain the same.&lt;/tt&gt;</rr:ExpenseExampleNarrativeTextBlock>
  <rr:StrategyNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_34">&lt;tt&gt;In seeking to achieve its objective, the fund may forego opportunities that&lt;br /&gt;would result in capital gains and may accept prudent risks to capital value, &lt;br /&gt;in each case to take advantage of opportunities for higher current income.&lt;br /&gt; &lt;br /&gt;Under normal circumstances, the fund will invest at least 80% of its assets in,&lt;br /&gt;or derive at least 80% of its income from, securities that are exempt from&lt;br /&gt;regular federal income tax. The fund may invest, without limitation, in&lt;br /&gt;securities that may subject you to federal alternative minimum tax. The fund &lt;br /&gt;invests a significant portion of its portfolio in municipal bonds rated BBB+ or&lt;br /&gt;below or Baa1 or below by Nationally Recognized Statistical Rating Organizations&lt;br /&gt;designated by the fund&apos;s investment adviser, or unrated but determined by the&lt;br /&gt;fund&apos;s investment adviser to be of equivalent quality. Securities rated BB+ or&lt;br /&gt;below and Ba1 or below are sometimes referred to as "junk bonds." Some of the&lt;br /&gt;securities in which the fund invests may have credit and liquidity support&lt;br /&gt;features, including guarantees and letters of credit.&lt;br /&gt; &lt;br /&gt;In addition, the fund may invest significantly in municipal obligations of&lt;br /&gt;issuers in the same state, or engaged in the same types of projects or&lt;br /&gt;industries.&lt;br /&gt; &lt;br /&gt;The investment adviser uses a system of multiple portfolio counselors in&lt;br /&gt;managing the fund&apos;s assets. Under this approach, the portfolio of the fund is&lt;br /&gt;divided into segments managed by individual counselors who decide how their&lt;br /&gt;respective segments will be invested.&lt;br /&gt; &lt;br /&gt;The fund relies on the professional judgment of its investment adviser to make&lt;br /&gt;decisions about the fund&apos;s portfolio investments. The basic investment philosophy &lt;br /&gt;of the investment adviser is to seek to invest in attractively priced securities &lt;br /&gt;that, in its opinion, represent good, long-term investment opportunities. The &lt;br /&gt;investment adviser believes that an important way to accomplish this is by &lt;br /&gt;analyzing various factors, which may include the credit strength of the issuer, &lt;br /&gt;prices of similar securities issued by comparable issuers, anticipated changes &lt;br /&gt;in interest rates, general market conditions and other factors pertinent to the &lt;br /&gt;particular security being evaluated. Securities may be sold when the investment &lt;br /&gt;adviser believes that they no longer represent relatively attractive investment &lt;br /&gt;opportunities.&lt;/tt&gt;</rr:StrategyNarrativeTextBlock>
  <rr:RiskReturnHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_1">American High-Income Municipal Bond Fund&#174;</rr:RiskReturnHeading>
  <rr:ExpenseBreakpointDiscounts contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_6">You may qualify for sales charge discounts if you and your family invest,
or agree to invest in the future, at least $100,000 in American Funds.</rr:ExpenseBreakpointDiscounts>
  <rr:ExpenseExampleHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_18">Example</rr:ExpenseExampleHeading>
  <rr:PerformanceTableUsesHighestFederalRate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_69">After-tax returns are calculated using the highest individual federal income tax rates in effect during each year of the periods shown and do not reflect the impact of state and local taxes.</rr:PerformanceTableUsesHighestFederalRate>
  <rr:ObjectiveHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_2">Investment objective</rr:ObjectiveHeading>
  <rr:PerformancePastDoesNotIndicateFuture contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_44">Past investment results (before and after taxes) are not predictive of future investment results.</rr:PerformancePastDoesNotIndicateFuture>
  <rr:PerformanceAdditionalMarketIndex contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_42">The Barclays High Yield Municipal Bond Index is a market-value-weighted index composed of municipal bonds rated below BBB/Baa. The Lipper High Yield Municipal Debt Funds Average includes the fund and other funds that disclose investment objectives and/or strategies reasonably comparable to the fund&apos;s objective and/or strategies.</rr:PerformanceAdditionalMarketIndex>
  <rr:RiskLoseMoney contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_37">You may lose money by investing in the fund.</rr:RiskLoseMoney>
  <rr:RiskHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_35">Principal risks</rr:RiskHeading>
  <rr:ShareholderFeesCaption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_8">Shareholder fees (fees paid directly from your investment)</rr:ShareholderFeesCaption>
  <rr:ExpenseExampleByYearCaption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_20">Although your actual costs may be higher or lower, based on these assumptions your costs would be:</rr:ExpenseExampleByYearCaption>
  <rr:PortfolioTurnoverRate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" unitRef="pure" decimals="2" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_32">0.20</rr:PortfolioTurnoverRate>
  <rr:PerformanceTableNotRelevantToTaxDeferred contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_70">Your actual after-tax returns depend on your individual tax situation and likely will differ from the results shown above.</rr:PerformanceTableNotRelevantToTaxDeferred>
  <rr:BarChartHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_45">Calendar year total returns for Class A shares (Results do not include a sales charge; if a sales charge were included, results would be lower.)</rr:BarChartHeading>
  <rr:BarChartDoesNotReflectSalesLoads contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_47">(Results do not include a sales charge; if a sales charge were included, results would be lower.)</rr:BarChartDoesNotReflectSalesLoads>
  <rr:BarChartAndPerformanceTableHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_39">Investment results</rr:BarChartAndPerformanceTableHeading>
  <rr:ExpenseBreakpointMinimumInvestmentRequiredAmount contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" unitRef="iso4217_USD" decimals="0" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_7">100000</rr:ExpenseBreakpointMinimumInvestmentRequiredAmount>
  <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_41">The following bar chart shows how the fund&apos;s investment results have varied from
year to year, and the following table shows how the fund&apos;s average annual total
returns for various periods compare with different broad measures of market results.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
  <rr:BarChartClosingTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_67">&lt;tt&gt;Highest/Lowest quarterly results during this period were:&lt;br /&gt;&lt;br /&gt;Highest&amp;#xA0;&amp;#xA0;11.55% (quarter ended September 30, 2009)&lt;br /&gt;&lt;br /&gt;Lowest&amp;#xA0;&amp;#xA0;-13.96% (quarter ended December 31, 2008)&lt;br /&gt;&lt;br /&gt;The fund&apos;s total return for the six month ended&lt;br /&gt;June 30, 2012, was 7.99%.&lt;/tt&gt;</rr:BarChartClosingTextBlock>
  <rr:OperatingExpensesCaption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_13">Annual fund operating expenses (expenses that you pay each year as a percentage of the   value of your investment)</rr:OperatingExpensesCaption>
  <rr:AverageAnnualReturnCaption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_72">Average annual total returns For the periods ended December 31, 2011 (with maximum sales charge): </rr:AverageAnnualReturnCaption>
  <rr:BarChartNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_46">&lt;tt&gt;The following bar chart shows how the fund&apos;s investment results have varied from&lt;br /&gt;year to year, and the following table shows how the fund&apos;s average annual total&lt;br /&gt;returns for various periods compare with different broad measures of market&lt;br /&gt;results.&lt;/tt&gt;</rr:BarChartNarrativeTextBlock>
  <rr:PortfolioTurnoverHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_30">Portfolio turnover</rr:PortfolioTurnoverHeading>
  <rr:RiskNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_36">&lt;tt&gt;This section describes the principal risks associated with the fund&apos;s principal&lt;br /&gt;investment strategies. You may lose money by investing in the fund. The&lt;br /&gt;likelihood of loss may be greater if you invest for a shorter period of time.&lt;br /&gt; &lt;br /&gt;Market conditions -- The prices of, and the income generated by, the securities&lt;br /&gt;held by the fund may decline due to market conditions and other factors,&lt;br /&gt;including those directly involving the issuers of securities held by the fund.&lt;br /&gt; &lt;br /&gt;Investing in bonds -- Rising interest rates will generally cause the prices of&lt;br /&gt;bonds and other debt securities to fall. Longer maturity debt securities may be&lt;br /&gt;subject to greater price fluctuations than shorter maturity debt securities. In&lt;br /&gt;addition, falling interest rates may cause an issuer to redeem, call or refinance &lt;br /&gt;a security before its stated maturity, which may result in the fund having to &lt;br /&gt;reinvest the proceeds in lower yielding securities.&lt;br /&gt; &lt;br /&gt;Bonds and other debt securities are subject to credit risk, which is the&lt;br /&gt;possibility that the credit strength of an issuer will weaken and/or an issuer&lt;br /&gt;of a debt security will fail to make timely payments of principal or interest&lt;br /&gt;and the security will go into default.&lt;br /&gt; &lt;br /&gt;Thinly traded securities -- There may be little trading in the secondary market&lt;br /&gt;for particular bonds or other debt securities, which may make them more difficult &lt;br /&gt;to value, acquire or sell.&lt;br /&gt; &lt;br /&gt;Credit and liquidity support -- Changes in the credit quality of banks and&lt;br /&gt;financial institutions providing credit and liquidity support features with&lt;br /&gt;respect to securities held by the fund could cause the values of these&lt;br /&gt;securities to decline.&lt;br /&gt; &lt;br /&gt;Investing in lower rated bonds -- Lower rated bonds and other lower rated debt&lt;br /&gt;securities generally have higher rates of interest and involve greater risk of&lt;br /&gt;default or price declines due to changes in the issuer&apos;s creditworthiness than&lt;br /&gt;those of higher quality debt securities. The market prices of these securities&lt;br /&gt;may fluctuate more than the prices of higher quality debt securities and may&lt;br /&gt;decline significantly in periods of general economic difficulty. These risks may&lt;br /&gt;be increased with respect to investments in junk bonds.&lt;br /&gt; &lt;br /&gt;Investing in similar municipal bonds -- Investing significantly in municipal&lt;br /&gt;obligations of issuers in the same state or backed by revenues of similar types&lt;br /&gt;of projects or industries may make the fund more susceptible to certain&lt;br /&gt;economic, political or regulatory occurrences. As a result, the potential for&lt;br /&gt;fluctuations in the fund&apos;s share price may increase.&lt;br /&gt; &lt;br /&gt;Management -- The investment adviser to the fund actively manages the fund&apos;s&lt;br /&gt;investments. Consequently, the fund is subject to the risk that the methods and&lt;br /&gt;analyses employed by the investment adviser in this process may not produce the&lt;br /&gt;desired results. This could cause the fund to lose value or its investment&lt;br /&gt;results to lag relevant benchmarks or other funds with similar objectives.&lt;br /&gt; &lt;br /&gt;Your investment in the fund is not a bank deposit and is not insured or guaranteed &lt;br /&gt;by the Federal Deposit Insurance Corporation or any other governmental agency, &lt;br /&gt;entity or person. You should consider how this fund fits into your overall &lt;br /&gt;investment program.&lt;/tt&gt;</rr:RiskNarrativeTextBlock>
  <rr:ExpenseHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_4">Fees and expenses of the fund</rr:ExpenseHeading>
  <rr:PerformanceTableOneClassOfAfterTaxShown contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_71">After-tax returns are shown only for Class A shares;</rr:PerformanceTableOneClassOfAfterTaxShown>
  <rr:StrategyHeading contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_33">Principal investment strategies</rr:StrategyHeading>
  <rr:PerformanceAvailabilityWebSiteAddress contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_43">americanfunds.com</rr:PerformanceAvailabilityWebSiteAddress>
  <rr:PerformanceNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_40">&lt;tt&gt;The following bar chart shows how the fund&apos;s investment results have varied from&lt;br /&gt;year to year, and the following table shows how the fund&apos;s average annual total&lt;br /&gt;returns for various periods compare with different broad measures of market&lt;br /&gt;results. This information provides some indication of the risks of investing in&lt;br /&gt;the fund. The Barclays High Yield Municipal Bond Index is a market-value-weighted &lt;br /&gt;index composed of municipal bonds rated below BBB/Baa. The Lipper High Yield &lt;br /&gt;Municipal Debt Funds Average includes the fund and other funds that disclose &lt;br /&gt;investment objectives and/or strategies reasonably comparable to the fund&apos;s &lt;br /&gt;objective and/or strategies. Past investment results (before and after taxes) &lt;br /&gt;are not predictive of future investment results. Updated information on the &lt;br /&gt;fund&apos;s investment results can be obtained by visiting americanfunds.com.&lt;/tt&gt;</rr:PerformanceNarrativeTextBlock>
  <rr:ExpenseNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_5">&lt;tt&gt;This table describes the fees and expenses that you may pay if you buy and hold&lt;br /&gt;shares of the fund. You may qualify for sales charge discounts if you and your&lt;br /&gt;family invest, or agree to invest in the future, at least $100,000 in American&lt;br /&gt;Funds. More information about these and other discounts is available from your&lt;br /&gt;financial professional and in the "Sales charge reductions and waivers" section&lt;br /&gt;on page 48 of the prospectus and on page 70 of the fund&apos;s statement of&lt;br /&gt;additional information.&lt;/tt&gt;</rr:ExpenseNarrativeTextBlock>
  <rr:AnnualFundOperatingExpensesTableTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_114">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/OperatingExpensesData_S000009229Member1 column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:AnnualFundOperatingExpensesTableTextBlock>
  <rr:ExpenseExampleNoRedemptionByYearCaption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_25">For the share classes listed below, you would pay the following if you did not redeem your shares:</rr:ExpenseExampleNoRedemptionByYearCaption>
  <rr:PerformanceTableTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_115">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/PerformanceTableData_S000009229Member1 column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * column rr_PerformanceMeasureAxis compact * row primary compact *  ~&lt;/div&gt;</rr:PerformanceTableTextBlock>
  <rr:PerformanceTableNarrativeTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_68">&lt;tt&gt;After-tax returns are shown only for Class A shares; after-tax returns for other&lt;br /&gt;share classes will vary. After-tax returns are calculated using the highest&lt;br /&gt;individual federal income tax rates in effect during each year of the periods&lt;br /&gt;shown and do not reflect the impact of state and local taxes. Your actual&lt;br /&gt;after-tax returns depend on your individual tax situation and likely will differ&lt;br /&gt;from the results shown above.&lt;/tt&gt;</rr:PerformanceTableNarrativeTextBlock>
  <rr:RiskNotInsuredDepositoryInstitution contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_38">Your investment in the fund is not a bank deposit and is not insured or
guaranteed by the Federal Deposit Insurance Corporation or any other
governmental agency, entity or person.</rr:RiskNotInsuredDepositoryInstitution>
  <rr:ExpenseExampleNoRedemptionTableTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_113">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/ExpenseExampleNoRedemption_S000009229Member1 column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:ExpenseExampleNoRedemptionTableTextBlock>
  <rr:PerformanceTableFootnotesTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_109">&lt;tt&gt;Class A annualized 30-day yield at July 31, 2012: 3.39%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&lt;br /&gt;(For current yield information, please call American FundsLine&amp;#xAE; &lt;br /&gt;at 800/325-3590.)&lt;/tt&gt;</rr:PerformanceTableFootnotesTextBlock>
  <rr:ShareholderFeesTableTextBlock contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1001_111">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/ShareholderFeesData_S000009229Member1 column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:ShareholderFeesTableTextBlock>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602440x-9984149" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_2001_100">Lipper High Yield Municipal Debt Funds Average (reflects no deductions for sales charges, account fees or taxes)</rr:AverageAnnualReturnLabel>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602440x-9984149" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_2001_101">0.0994</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602440x-9984149" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_2001_102">0.0165</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602440x-9984149" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_2001_103">0.0416</rr:AverageAnnualReturnYear10>
  <rr:AverageAnnualReturnSinceInception contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602440x-9984149" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_2001_104">0.0493</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602440x-9984149" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_2001_105">1994-09-26</rr:AverageAnnualReturnInceptionDate>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602440x-9984160" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_3001_95">Barclays High Yield Municipal Bond Index (reflects no deductions for sales charges, account fees, expenses or taxes)</rr:AverageAnnualReturnLabel>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602440x-9984160" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_3001_96">0.0925</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602440x-9984160" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_3001_97">0.0220</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602440x-9984160" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_3001_98">0.0551</rr:AverageAnnualReturnYear10>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602440x-9984160" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_3001_99">1994-09-26</rr:AverageAnnualReturnInceptionDate>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602440x-9984166" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_4001_89">Barclays Municipal Bond Index (reflects no deductions for sales charges, account fees, expenses or taxes)</rr:AverageAnnualReturnLabel>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602440x-9984166" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_4001_90">0.1070</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602440x-9984166" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_4001_91">0.0522</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602440x-9984166" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_4001_92">0.0538</rr:AverageAnnualReturnYear10>
  <rr:AverageAnnualReturnSinceInception contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602440x-9984166" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_4001_93">0.0599</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602440x-9984166" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_4001_94">1994-09-26</rr:AverageAnnualReturnInceptionDate>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602440x602366_602488x-9981410" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_5002_84">Share class A - After taxes on distributions and sale of fund shares</rr:AverageAnnualReturnLabel>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602440x602366_602488x-9981410" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_5002_85">0.0547</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602440x602366_602488x-9981410" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_5002_86">0.0222</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602440x602366_602488x-9981410" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_5002_87">0.0394</rr:AverageAnnualReturnYear10>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602440x602366_602488x-9981410" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_5002_88">1994-09-26</rr:AverageAnnualReturnInceptionDate>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602440x602395_602488x-9981410" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_6002_79">Share class A - After taxes on distributions</rr:AverageAnnualReturnLabel>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602440x602395_602488x-9981410" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_6002_80">0.0575</rr:AverageAnnualReturnYear01>
  <rr:AverageAnnualReturnYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602440x602395_602488x-9981410" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_6002_81">0.0183</rr:AverageAnnualReturnYear05>
  <rr:AverageAnnualReturnYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602440x602395_602488x-9981410" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_6002_82">0.0382</rr:AverageAnnualReturnYear10>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602440x602395_602488x-9981410" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_6002_83">1994-09-26</rr:AverageAnnualReturnInceptionDate>
  <dei:TradingSymbol contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981401" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1006_0">AHMFX</dei:TradingSymbol>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981401" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1006_9">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981401" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1006_73">Share class F-2 - Before taxes</rr:AverageAnnualReturnLabel>
  <rr:ExpenseExampleYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981401" unitRef="iso4217_USD" decimals="0" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1006_21">50</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981401" unitRef="iso4217_USD" decimals="0" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1006_22">157</rr:ExpenseExampleYear03>
  <rr:ExpenseExampleYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981401" unitRef="iso4217_USD" decimals="0" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1006_24">616</rr:ExpenseExampleYear10>
  <rr:RedemptionFeeOverRedemption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981401" unitRef="pure" decimals="2" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1006_12">0.00</rr:RedemptionFeeOverRedemption>
  <rr:ExpenseExampleYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981401" unitRef="iso4217_USD" decimals="0" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1006_23">274</rr:ExpenseExampleYear05>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981401" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1006_74">0.1009</rr:AverageAnnualReturnYear01>
  <rr:OtherExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981401" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1006_16">0.0015</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981401" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1006_14">0.0034</rr:ManagementFeesOverAssets>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981401" unitRef="pure" decimals="2" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1006_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981401" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1006_15">0.0000</rr:DistributionAndService12b1FeesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981401" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1006_17">0.0049</rr:ExpensesOverAssets>
  <rr:AverageAnnualReturnSinceInception contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981401" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1006_77">0.0493</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981401" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1006_78">2008-08-12</rr:AverageAnnualReturnInceptionDate>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981401" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1006_10">0.0000</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981407" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1005_0">ABHFX</dei:TradingSymbol>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981407" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1005_9">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981407" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1005_73">Share class F-1 - Before taxes</rr:AverageAnnualReturnLabel>
  <rr:ExpenseExampleYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981407" unitRef="iso4217_USD" decimals="0" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1005_21">78</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981407" unitRef="iso4217_USD" decimals="0" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1005_22">243</rr:ExpenseExampleYear03>
  <rr:ExpenseExampleYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981407" unitRef="iso4217_USD" decimals="0" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1005_24">942</rr:ExpenseExampleYear10>
  <rr:RedemptionFeeOverRedemption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981407" unitRef="pure" decimals="2" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1005_12">0.00</rr:RedemptionFeeOverRedemption>
  <rr:ExpenseExampleYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981407" unitRef="iso4217_USD" decimals="0" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1005_23">422</rr:ExpenseExampleYear05>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981407" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1005_74">0.0978</rr:AverageAnnualReturnYear01>
  <rr:OtherExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981407" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1005_16">0.0017</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981407" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1005_14">0.0034</rr:ManagementFeesOverAssets>
  <rr:AverageAnnualReturnYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981407" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1005_75">0.0254</rr:AverageAnnualReturnYear05>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981407" unitRef="pure" decimals="2" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1005_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981407" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1005_15">0.0025</rr:DistributionAndService12b1FeesOverAssets>
  <rr:AverageAnnualReturnYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981407" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1005_76">0.0414</rr:AverageAnnualReturnYear10>
  <rr:ExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981407" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1005_17">0.0076</rr:ExpensesOverAssets>
  <rr:AverageAnnualReturnSinceInception contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981407" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1005_77">0.0418</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981407" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1005_78">2001-03-19</rr:AverageAnnualReturnInceptionDate>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981407" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1005_10">0.0000</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981408" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1004_0">AHICX</dei:TradingSymbol>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981408" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1004_9">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981408" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1004_73">Share class C - Before taxes</rr:AverageAnnualReturnLabel>
  <rr:ExpenseExampleYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981408" unitRef="iso4217_USD" decimals="0" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1004_21">249</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleNoRedemptionYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981408" unitRef="iso4217_USD" decimals="0" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1004_26">149</rr:ExpenseExampleNoRedemptionYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981408" unitRef="iso4217_USD" decimals="0" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1004_22">462</rr:ExpenseExampleYear03>
  <rr:ExpenseExampleYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981408" unitRef="iso4217_USD" decimals="0" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1004_24">1746</rr:ExpenseExampleYear10>
  <rr:RedemptionFeeOverRedemption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981408" unitRef="pure" decimals="2" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1004_12">0.00</rr:RedemptionFeeOverRedemption>
  <rr:ExpenseExampleYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981408" unitRef="iso4217_USD" decimals="0" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1004_23">797</rr:ExpenseExampleYear05>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981408" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1004_74">0.0802</rr:AverageAnnualReturnYear01>
  <rr:OtherExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981408" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1004_16">0.0012</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981408" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1004_14">0.0034</rr:ManagementFeesOverAssets>
  <rr:ExpenseExampleNoRedemptionYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981408" unitRef="iso4217_USD" decimals="0" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1004_29">1746</rr:ExpenseExampleNoRedemptionYear10>
  <rr:AverageAnnualReturnYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981408" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1004_75">0.0182</rr:AverageAnnualReturnYear05>
  <rr:ExpenseExampleNoRedemptionYear03 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981408" unitRef="iso4217_USD" decimals="0" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1004_27">462</rr:ExpenseExampleNoRedemptionYear03>
  <rr:ExpenseExampleNoRedemptionYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981408" unitRef="iso4217_USD" decimals="0" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1004_28">797</rr:ExpenseExampleNoRedemptionYear05>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981408" unitRef="pure" decimals="2" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1004_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981408" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1004_15">0.0100</rr:DistributionAndService12b1FeesOverAssets>
  <rr:AverageAnnualReturnYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981408" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1004_76">0.0339</rr:AverageAnnualReturnYear10>
  <rr:ExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981408" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1004_17">0.0146</rr:ExpensesOverAssets>
  <rr:AverageAnnualReturnSinceInception contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981408" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1004_77">0.0350</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981408" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1004_78">2001-03-15</rr:AverageAnnualReturnInceptionDate>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981408" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1004_10">0.0100</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981409" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1003_0">ABHMX</dei:TradingSymbol>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981409" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1003_9">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981409" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1003_73">Share class B - Before taxes</rr:AverageAnnualReturnLabel>
  <rr:ExpenseExampleYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981409" unitRef="iso4217_USD" decimals="0" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1003_21">645</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleNoRedemptionYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981409" unitRef="iso4217_USD" decimals="0" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1003_26">145</rr:ExpenseExampleNoRedemptionYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981409" unitRef="iso4217_USD" decimals="0" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1003_22">849</rr:ExpenseExampleYear03>
  <rr:ExpenseExampleYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981409" unitRef="iso4217_USD" decimals="0" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1003_24">1500</rr:ExpenseExampleYear10>
  <rr:RedemptionFeeOverRedemption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981409" unitRef="pure" decimals="2" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1003_12">0.00</rr:RedemptionFeeOverRedemption>
  <rr:ExpenseExampleYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981409" unitRef="iso4217_USD" decimals="0" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1003_23">976</rr:ExpenseExampleYear05>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981409" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1003_74">0.0407</rr:AverageAnnualReturnYear01>
  <rr:OtherExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981409" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1003_16">0.0008</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981409" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1003_14">0.0034</rr:ManagementFeesOverAssets>
  <rr:ExpenseExampleNoRedemptionYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981409" unitRef="iso4217_USD" decimals="0" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1003_29">1500</rr:ExpenseExampleNoRedemptionYear10>
  <rr:AverageAnnualReturnYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981409" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1003_75">0.0154</rr:AverageAnnualReturnYear05>
  <rr:ExpenseExampleNoRedemptionYear03 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981409" unitRef="iso4217_USD" decimals="0" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1003_27">449</rr:ExpenseExampleNoRedemptionYear03>
  <rr:ExpenseExampleNoRedemptionYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981409" unitRef="iso4217_USD" decimals="0" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1003_28">776</rr:ExpenseExampleNoRedemptionYear05>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981409" unitRef="pure" decimals="2" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1003_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981409" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1003_15">0.0100</rr:DistributionAndService12b1FeesOverAssets>
  <rr:AverageAnnualReturnYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981409" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1003_76">0.0363</rr:AverageAnnualReturnYear10>
  <rr:ExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981409" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1003_17">0.0142</rr:ExpensesOverAssets>
  <rr:AverageAnnualReturnSinceInception contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981409" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1003_77">0.0417</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981409" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1003_78">2000-03-15</rr:AverageAnnualReturnInceptionDate>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981409" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1003_10">0.0500</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_0">AMHIX</dei:TradingSymbol>
  <rr:AnnualReturn2002 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_48">0.0624</rr:AnnualReturn2002>
  <rr:LowestQuarterlyReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_64">Lowest</rr:LowestQuarterlyReturnLabel>
  <rr:HighestQuarterlyReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_61">Highest</rr:HighestQuarterlyReturnLabel>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_9">0.0375</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:ThirtyDayYieldPhone contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_107">800/325-3590</rr:ThirtyDayYieldPhone>
  <rr:BarChartYearToDateReturnDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_60">2012-06-30</rr:BarChartYearToDateReturnDate>
  <rr:AverageAnnualReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_73">Share class A - Before taxes</rr:AverageAnnualReturnLabel>
  <rr:ExpenseExampleYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" unitRef="iso4217_USD" decimals="0" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_21">442</rr:ExpenseExampleYear01>
  <rr:BarChartHighestQuarterlyReturnDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_63">2009-09-30</rr:BarChartHighestQuarterlyReturnDate>
  <rr:ThirtyDayYield contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_108">0.0339</rr:ThirtyDayYield>
  <rr:ExpenseExampleYear03 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" unitRef="iso4217_USD" decimals="0" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_22">584</rr:ExpenseExampleYear03>
  <rr:BarChartLowestQuarterlyReturn contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_65">-0.1396</rr:BarChartLowestQuarterlyReturn>
  <rr:AnnualReturn2004 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_50">0.0566</rr:AnnualReturn2004>
  <rr:AnnualReturn2010 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_56">0.0408</rr:AnnualReturn2010>
  <rr:ExpenseExampleYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" unitRef="iso4217_USD" decimals="0" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_24">1190</rr:ExpenseExampleYear10>
  <rr:RedemptionFeeOverRedemption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" unitRef="pure" decimals="2" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_12">0.00</rr:RedemptionFeeOverRedemption>
  <rr:ExpenseExampleYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" unitRef="iso4217_USD" decimals="0" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_23">739</rr:ExpenseExampleYear05>
  <rr:AnnualReturn2007 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_53">-0.0081</rr:AnnualReturn2007>
  <rr:BarChartHighestQuarterlyReturn contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_62">0.1155</rr:BarChartHighestQuarterlyReturn>
  <rr:AverageAnnualReturnYear01 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_74">0.0575</rr:AverageAnnualReturnYear01>
  <rr:OtherExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_16">0.0008</rr:OtherExpensesOverAssets>
  <rr:AnnualReturn2008 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_54">-0.1940</rr:AnnualReturn2008>
  <rr:ManagementFeesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_14">0.0034</rr:ManagementFeesOverAssets>
  <rr:BarChartLowestQuarterlyReturnDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_66">2008-12-31</rr:BarChartLowestQuarterlyReturnDate>
  <rr:AnnualReturn2009 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_55">0.2444</rr:AnnualReturn2009>
  <rr:AverageAnnualReturnYear05 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_75">0.0183</rr:AverageAnnualReturnYear05>
  <rr:AnnualReturn2005 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_51">0.0468</rr:AnnualReturn2005>
  <rr:YearToDateReturnLabel contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_58">The fund&apos;s total return</rr:YearToDateReturnLabel>
  <rr:AnnualReturn2011 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_57">0.0990</rr:AnnualReturn2011>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" unitRef="pure" decimals="2" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:AnnualReturn2003 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_49">0.0624</rr:AnnualReturn2003>
  <rr:ThirtyDayYieldCaption contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_106">Class A annualized 30-day yield at July 31, 2012:</rr:ThirtyDayYieldCaption>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_15">0.0026</rr:DistributionAndService12b1FeesOverAssets>
  <rr:AverageAnnualReturnYear10 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_76">0.0382</rr:AverageAnnualReturnYear10>
  <rr:ExpensesOverAssets contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_17">0.0068</rr:ExpensesOverAssets>
  <rr:AnnualReturn2006 contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_52">0.0638</rr:AnnualReturn2006>
  <rr:AverageAnnualReturnSinceInception contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_77">0.0514</rr:AverageAnnualReturnSinceInception>
  <rr:AverageAnnualReturnInceptionDate contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_78">1994-09-26</rr:AverageAnnualReturnInceptionDate>
  <rr:BarChartYearToDateReturn contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_59">0.0799</rr:BarChartYearToDateReturn>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0001474365-12-000122_STD_1_20121001_0_602228x-9981389_602238x-9981385_602488x-9981410" unitRef="pure" decimals="4" id="id_303144_E467CA70-288B-4229-987D-E390D6C69166_1002_10">0.0100</rr:MaximumDeferredSalesChargeOverOfferingPrice>
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