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<!-- EDGAR Online I-Metrix Xcelerate Instance Document, based on XBRL 2.1  http://www.edgar-online.com/ -->
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<!-- Creation date: 2013-01-04T21:11:16Z -->
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  <dei:DocumentPeriodEndDate contextRef="eol_0000051931-12-000971_STD_1_20130101_0" id="id_716109_C9BEE1F5-AA4F-450D-A0F5-1D532EC6239B_1_5">2012-10-31</dei:DocumentPeriodEndDate>
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  <dei:AmendmentFlag contextRef="eol_0000051931-12-000971_STD_1_20130101_0" id="id_716109_C9BEE1F5-AA4F-450D-A0F5-1D532EC6239B_1_4">false</dei:AmendmentFlag>
  <dei:DocumentCreationDate contextRef="eol_0000051931-12-000971_STD_1_20130101_0" id="id_716109_C9BEE1F5-AA4F-450D-A0F5-1D532EC6239B_1_0">2012-12-31</dei:DocumentCreationDate>
  <rr:ProspectusDate contextRef="eol_0000051931-12-000971_STD_1_20130101_0" id="id_716109_C9BEE1F5-AA4F-450D-A0F5-1D532EC6239B_1_2">2013-01-01</rr:ProspectusDate>
  <rr:PortfolioTurnoverTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1001_36">&lt;tt&gt;The fund may pay transaction costs, such as commissions, when it buys and &lt;br /&gt;sells securities (or "turns over" its portfolio). A higher portfolio turnover &lt;br /&gt;rate may indicate higher transaction costs. 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.&lt;/tt&gt;</rr:PortfolioTurnoverTextBlock>
  <rr:ExpenseExampleWithRedemptionTableTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1001_47">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/ExpenseExample_S000037540Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:ExpenseExampleWithRedemptionTableTextBlock>
  <rr:ObjectivePrimaryTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1001_3">&lt;tt&gt;The fund&apos;s investment objective is to provide current income, consistent with&lt;br /&gt;preservation of capital.&lt;/tt&gt;</rr:ObjectivePrimaryTextBlock>
  <rr:ExpenseExampleNarrativeTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1001_24">&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_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1001_38">&lt;tt&gt;The fund will attempt to achieve its investment objective by investing in a mix&lt;br /&gt;of American Funds bond funds. The fund will principally invest in funds that&lt;br /&gt;seek current income through bond investments.&lt;br /&gt; &lt;br /&gt;When determining in which bond funds to invest, the investment adviser will&lt;br /&gt;predominately seek exposure to higher quality bonds (rated A- or better or A3 &lt;br /&gt;or 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) with intermediate to short-term durations. &lt;br /&gt;The fund may, however, invest in underlying funds with exposure to lower quality, &lt;br /&gt;higher yielding securities rated BBB+ or below and Baa1 or below (including those &lt;br /&gt;rated BB+ or below and Ba1 or below) or unrated but determined by the fund&apos;s &lt;br /&gt;investment adviser to be of equivalent quality, and to bonds with longer durations.&lt;br /&gt; &lt;br /&gt;The underlying funds may hold securities issued and guaranteed by the U.S.&lt;br /&gt;government, securities issued by federal agencies and instrumentalities and&lt;br /&gt;securities backed by mortgages or other assets. The investment adviser anticipates &lt;br /&gt;that exposure to mortgage-backed securities and asset-backed securities may help &lt;br /&gt;the fund generate current income. The underlying funds may also invest in the debt &lt;br /&gt;securities of governments, agencies, corporations and other entities domiciled &lt;br /&gt;outside the United States.&lt;br /&gt; &lt;br /&gt;The fund&apos;s investment adviser seeks to create a combination of underlying &lt;br /&gt;funds that complement each other with a goal of achieving the fund&apos;s investment&lt;br /&gt;objective of providing current income, consistent with preservation of capital.&lt;br /&gt;In making this determination, the fund&apos;s investment adviser considers the&lt;br /&gt;historical volatility and returns of the underlying funds and how various&lt;br /&gt;combinations would have behaved in past market environments. Consideration is&lt;br /&gt;also given to, among other topics, current market conditions and the investment&lt;br /&gt;positions of the underlying funds.&lt;/tt&gt;</rr:StrategyNarrativeTextBlock>
  <rr:RiskReturnHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1001_1">American Funds College Enrollment FundSM</rr:RiskReturnHeading>
  <rr:ExpenseBreakpointDiscounts contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1001_6">You may qualify for a Class 529-A sales charge discount if you and your family
invest, or agree to invest in the future, at least $25,000 in American Funds.</rr:ExpenseBreakpointDiscounts>
  <rr:ExpenseExampleHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1001_23">Example</rr:ExpenseExampleHeading>
  <rr:PerformanceOneYearOrLess contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1001_45">Because the fund began investment operations on September 14, 2012, information
regarding investment results is not available as of the date of this prospectus.</rr:PerformanceOneYearOrLess>
  <rr:ObjectiveHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1001_2">Investment objective</rr:ObjectiveHeading>
  <rr:RiskLoseMoney contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1001_41">You may lose money by investing in the fund.</rr:RiskLoseMoney>
  <rr:RiskHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1001_39">Principal risks</rr:RiskHeading>
  <rr:ShareholderFeesCaption contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1001_8">Shareholder fees (fees paid directly from your investment)</rr:ShareholderFeesCaption>
  <rr:ExpenseExampleByYearCaption contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1001_25">Although your actual costs may be higher or lower, based on these assumptions your costs would be:</rr:ExpenseExampleByYearCaption>
  <rr:BarChartAndPerformanceTableHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1001_43">Investment results</rr:BarChartAndPerformanceTableHeading>
  <rr:ExpenseBreakpointMinimumInvestmentRequiredAmount contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285" unitRef="iso4217_USD" decimals="0" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1001_7">25000</rr:ExpenseBreakpointMinimumInvestmentRequiredAmount>
  <rr:OperatingExpensesCaption contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1001_14">Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)</rr:OperatingExpensesCaption>
  <rr:PortfolioTurnoverHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1001_35">Portfolio turnover</rr:PortfolioTurnoverHeading>
  <rr:RiskNarrativeTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_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;Investors in the fund should have a long-term perspective and be able to&lt;br /&gt;tolerate potentially sharp declines in value.&lt;br /&gt; &lt;br /&gt;Allocation risk - Investments in the fund are subject to risks related to the&lt;br /&gt;investment adviser&apos;s allocation choices. The selection of the underlying funds&lt;br /&gt;and the allocation of the fund&apos;s assets could cause the fund to lose value or&lt;br /&gt;its results to lag relevant benchmarks or other funds with similar objectives.&lt;br /&gt; &lt;br /&gt;Fund structure - The fund invests in underlying funds and incurs expenses&lt;br /&gt;related to the underlying funds. In addition, investors in the fund will incur&lt;br /&gt;fees to pay for certain expenses related to the operations of the fund. An&lt;br /&gt;investor holding the underlying funds directly and in the same proportions as&lt;br /&gt;the fund would incur lower overall expenses but would not receive the benefit &lt;br /&gt;of the portfolio management and other services provided by the fund.&lt;br /&gt; &lt;br /&gt;Because the fund&apos;s investments consist of underlying funds, the fund&apos;s risks are&lt;br /&gt;directly related to the risks of the underlying funds. For this reason, it is&lt;br /&gt;important to understand the risks associated with investing in the underlying&lt;br /&gt;funds.&lt;br /&gt; &lt;br /&gt;Market conditions - The prices of, and the income generated by, the common&lt;br /&gt;stocks, bonds and other securities held by the underlying funds may decline due&lt;br /&gt;to market conditions and other factors, including those directly involving the&lt;br /&gt;issuers of securities held by the underlying funds.&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 underlying 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. Credit risk is gauged, in part, by the&lt;br /&gt;credit ratings of the securities in which the underlying fund invests. However,&lt;br /&gt;ratings are only the opinions of the rating agencies issuing them and are not&lt;br /&gt;guarantees as to credit quality or an evaluation of market risk.&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 bonds rated Ba1 or BB+ or below by&lt;br /&gt;Nationally Recognized Statistical Rating Organizations or unrated but determined&lt;br /&gt;by the underlying fund&apos;s investment adviser to be of equivalent quality. Such&lt;br /&gt;securities are considered speculative and are sometimes referred to as "junk&lt;br /&gt;bonds." The value of the underlying funds may be similarly affected.&lt;br /&gt; &lt;br /&gt;Investing outside the United States - Securities of issuers domiciled outside&lt;br /&gt;the United States, or with significant operations outside the United States, &lt;br /&gt;may lose value because of adverse political, social, economic or market &lt;br /&gt;developments in the countries or regions in which the issuer operates. These &lt;br /&gt;securities may also lose value due to changes in foreign currency exchange rates &lt;br /&gt;against the U.S. dollar and/or currencies of other countries. Securities markets &lt;br /&gt;in certain countries may be more volatile and/or less liquid than those in the &lt;br /&gt;United States. Investments outside the United States may also be subject to &lt;br /&gt;different settlement and accounting practices and different regulatory, legal &lt;br /&gt;and reporting standards, and may be more difficult to value, than those in the&lt;br /&gt;United States. The risks of investing outside the United States may be&lt;br /&gt;heightened in connection with investments in emerging markets.&lt;br /&gt; &lt;br /&gt;Investing in mortgage-backed and asset-backed securities - Many types of bonds&lt;br /&gt;and other debt securities, including mortgage-backed/related securities, are&lt;br /&gt;subject to prepayment risk as well as the risks associated with investing in&lt;br /&gt;debt securities in general. If interest rates fall and the loans underlying&lt;br /&gt;these securities are prepaid faster than expected, the underlying fund may have&lt;br /&gt;to reinvest the prepaid principal in lower yielding securities, thus reducing&lt;br /&gt;the fund&apos;s income. Conversely, if interest rates increase and the loans&lt;br /&gt;underlying the securities are prepaid more slowly than expected, the expected&lt;br /&gt;duration of the securities may be extended, reducing the cash flow for potential&lt;br /&gt;reinvestment in higher yielding securities.&lt;br /&gt; &lt;br /&gt;Investing in U.S. government securities - Securities backed by the U.S. Treasury&lt;br /&gt;or the full faith and credit of the U.S. government are guaranteed only as to&lt;br /&gt;the timely payment of interest and principal when held to maturity. Accordingly,&lt;br /&gt;the current market values for these securities will fluctuate with changes in&lt;br /&gt;interest rates. Securities issued by government-sponsored entities and federal&lt;br /&gt;agencies and instrumentalities that are not backed by the full faith and credit&lt;br /&gt;of the U.S. government are neither issued nor guaranteed by the U.S. government.&lt;br /&gt; &lt;br /&gt;Investing in future delivery contracts - Contracts for future delivery of&lt;br /&gt;mortgage-related securities, such as to be announced contracts and mortgage&lt;br /&gt;dollar rolls, involve the fund selling mortgage-related securities and&lt;br /&gt;simultaneously contracting to repurchase similar securities for delivery at a&lt;br /&gt;future date at a predetermined price. This can increase the underlying fund&apos;s&lt;br /&gt;market exposure, and the market price of the securities the fund contracts to&lt;br /&gt;repurchase could drop below their purchase price. While the fund can preserve&lt;br /&gt;and generate capital through the use of such contracts by, for example,&lt;br /&gt;realizing the difference between the sale price and the future purchase price,&lt;br /&gt;the income generated by the fund may be reduced by engaging in such transactions. &lt;br /&gt;In addition, these transactions may increase the turnover rate of the fund.&lt;br /&gt; &lt;br /&gt;Management - The investment adviser to the fund and to the underlying funds&lt;br /&gt;actively manages each underlying fund&apos;s investments. Consequently, the underlying &lt;br /&gt;funds are subject to the risk that the methods and analyses employed by the &lt;br /&gt;investment adviser in this process may not produce the desired results. This could &lt;br /&gt;cause an underlying fund to lose value or its investment results to lag relevant &lt;br /&gt;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 investment &lt;br /&gt;program.&lt;/tt&gt;</rr:RiskNarrativeTextBlock>
  <rr:ExpenseHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1001_4">Fees and expenses of the fund</rr:ExpenseHeading>
  <rr:StrategyHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1001_37">Principal investment strategies</rr:StrategyHeading>
  <rr:PerformanceNarrativeTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1001_44">&lt;tt&gt;Because the fund began investment operations on September 14, 2012, information&lt;br /&gt;regarding investment results is not available as of the date of this prospectus.&lt;/tt&gt;</rr:PerformanceNarrativeTextBlock>
  <rr:ExpenseNarrativeTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_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 a Class 529-A sales charge discount if&lt;br /&gt;you and your family invest, or agree to invest in the future, at least $25,000&lt;br /&gt;in American Funds. More information about these and other discounts is available&lt;br /&gt;from your financial professional and in the "Sales charge reductions and&lt;br /&gt;waivers" section on page 51 of the prospectus and on page 65 of the fund&apos;s&lt;br /&gt;statement of additional information.&lt;/tt&gt;</rr:ExpenseNarrativeTextBlock>
  <rr:AnnualFundOperatingExpensesTableTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1001_49">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/OperatingExpensesData_S000037540Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:AnnualFundOperatingExpensesTableTextBlock>
  <rr:ExpenseExampleNoRedemptionByYearCaption contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1001_30">For the share classes listed below, you would pay the following if you did not redeem your shares:</rr:ExpenseExampleNoRedemptionByYearCaption>
  <rr:RiskNotInsuredDepositoryInstitution contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_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_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1001_48">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/ExpenseExampleNoRedemption_S000037540Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:ExpenseExampleNoRedemptionTableTextBlock>
  <rr:ShareholderFeesTableTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1001_46">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/ShareholderFeesData_S000037540Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:ShareholderFeesTableTextBlock>
  <dei:TradingSymbol contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978300" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1006_0">CENFX</dei:TradingSymbol>
  <rr:RedemptionFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978300" unitRef="iso4217_USD" decimals="0" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1006_12">0</rr:RedemptionFee>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978300" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1006_9">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:ExpenseExampleYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978300" unitRef="iso4217_USD" decimals="0" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1006_26">88</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978300" unitRef="iso4217_USD" decimals="0" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1006_27">290</rr:ExpenseExampleYear03>
  <rr:FeeWaiverOrReimbursementOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978300" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1006_20">-0.0017</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:ExpenseExampleYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978300" unitRef="iso4217_USD" decimals="0" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1006_29">1126</rr:ExpenseExampleYear10>
  <rr:ExpenseExampleYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978300" unitRef="iso4217_USD" decimals="0" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1006_28">508</rr:ExpenseExampleYear05>
  <rr:OtherExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978300" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1006_17">0.0041</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978300" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1006_15">0.0010</rr:ManagementFeesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978300" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1006_21">2013-12-31</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978300" unitRef="pure" decimals="2" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1006_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978300" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1006_16">0.0000</rr:DistributionAndService12b1FeesOverAssets>
  <rr:NetExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978300" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1006_22">0.0067</rr:NetExpensesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978300" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1006_19">0.0084</rr:ExpensesOverAssets>
  <rr:MaximumAccountFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978300" unitRef="iso4217_USD" decimals="0" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1006_13">10</rr:MaximumAccountFee>
  <rr:AcquiredFundFeesAndExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978300" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1006_18">0.0033</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978300" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1006_10">0.0000</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978301" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1005_0">CENEX</dei:TradingSymbol>
  <rr:RedemptionFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978301" unitRef="iso4217_USD" decimals="0" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1005_12">0</rr:RedemptionFee>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978301" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1005_9">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:ExpenseExampleYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978301" unitRef="iso4217_USD" decimals="0" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1005_26">133</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978301" unitRef="iso4217_USD" decimals="0" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1005_27">428</rr:ExpenseExampleYear03>
  <rr:FeeWaiverOrReimbursementOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978301" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1005_20">-0.0017</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:ExpenseExampleYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978301" unitRef="iso4217_USD" decimals="0" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1005_29">1632</rr:ExpenseExampleYear10>
  <rr:ExpenseExampleYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978301" unitRef="iso4217_USD" decimals="0" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1005_28">744</rr:ExpenseExampleYear05>
  <rr:OtherExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978301" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1005_17">0.0035</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978301" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1005_15">0.0010</rr:ManagementFeesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978301" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1005_21">2013-12-31</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978301" unitRef="pure" decimals="2" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1005_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978301" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1005_16">0.0050</rr:DistributionAndService12b1FeesOverAssets>
  <rr:NetExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978301" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1005_22">0.0111</rr:NetExpensesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978301" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1005_19">0.0128</rr:ExpensesOverAssets>
  <rr:MaximumAccountFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978301" unitRef="iso4217_USD" decimals="0" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1005_13">10</rr:MaximumAccountFee>
  <rr:AcquiredFundFeesAndExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978301" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1005_18">0.0033</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978301" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1005_10">0.0000</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978302" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1004_0">CENCX</dei:TradingSymbol>
  <rr:RedemptionFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978302" unitRef="iso4217_USD" decimals="0" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1004_12">0</rr:RedemptionFee>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978302" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1004_9">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:ExpenseExampleYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978302" unitRef="iso4217_USD" decimals="0" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1004_26">287</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleNoRedemptionYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978302" unitRef="iso4217_USD" decimals="0" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1004_31">187</rr:ExpenseExampleNoRedemptionYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978302" unitRef="iso4217_USD" decimals="0" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1004_27">592</rr:ExpenseExampleYear03>
  <rr:FeeWaiverOrReimbursementOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978302" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1004_20">-0.0017</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:ExpenseExampleYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978302" unitRef="iso4217_USD" decimals="0" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1004_29">2211</rr:ExpenseExampleYear10>
  <rr:ExpenseExampleYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978302" unitRef="iso4217_USD" decimals="0" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1004_28">1021</rr:ExpenseExampleYear05>
  <rr:OtherExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978302" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1004_17">0.0038</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978302" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1004_15">0.0010</rr:ManagementFeesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978302" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1004_21">2013-12-31</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:ExpenseExampleNoRedemptionYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978302" unitRef="iso4217_USD" decimals="0" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1004_34">2211</rr:ExpenseExampleNoRedemptionYear10>
  <rr:ExpenseExampleNoRedemptionYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978302" unitRef="iso4217_USD" decimals="0" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1004_32">592</rr:ExpenseExampleNoRedemptionYear03>
  <rr:ExpenseExampleNoRedemptionYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978302" unitRef="iso4217_USD" decimals="0" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1004_33">1021</rr:ExpenseExampleNoRedemptionYear05>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978302" unitRef="pure" decimals="2" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1004_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978302" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1004_16">0.0100</rr:DistributionAndService12b1FeesOverAssets>
  <rr:NetExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978302" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1004_22">0.0164</rr:NetExpensesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978302" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1004_19">0.0181</rr:ExpensesOverAssets>
  <rr:MaximumAccountFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978302" unitRef="iso4217_USD" decimals="0" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1004_13">10</rr:MaximumAccountFee>
  <rr:AcquiredFundFeesAndExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978302" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1004_18">0.0033</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978302" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1004_10">0.0100</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978303" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1003_0">CENBX</dei:TradingSymbol>
  <rr:RedemptionFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978303" unitRef="iso4217_USD" decimals="0" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1003_12">0</rr:RedemptionFee>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978303" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1003_9">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:ExpenseExampleYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978303" unitRef="iso4217_USD" decimals="0" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1003_26">693</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleNoRedemptionYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978303" unitRef="iso4217_USD" decimals="0" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1003_31">193</rr:ExpenseExampleNoRedemptionYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978303" unitRef="iso4217_USD" decimals="0" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1003_27">1010</rr:ExpenseExampleYear03>
  <rr:FeeWaiverOrReimbursementOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978303" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1003_20">-0.0017</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:ExpenseExampleYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978303" unitRef="iso4217_USD" decimals="0" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1003_29">2064</rr:ExpenseExampleYear10>
  <rr:ExpenseExampleYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978303" unitRef="iso4217_USD" decimals="0" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1003_28">1252</rr:ExpenseExampleYear05>
  <rr:OtherExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978303" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1003_17">0.0044</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978303" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1003_15">0.0010</rr:ManagementFeesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978303" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1003_21">2013-12-31</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:ExpenseExampleNoRedemptionYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978303" unitRef="iso4217_USD" decimals="0" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1003_34">2064</rr:ExpenseExampleNoRedemptionYear10>
  <rr:ExpenseExampleNoRedemptionYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978303" unitRef="iso4217_USD" decimals="0" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1003_32">610</rr:ExpenseExampleNoRedemptionYear03>
  <rr:ExpenseExampleNoRedemptionYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978303" unitRef="iso4217_USD" decimals="0" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1003_33">1052</rr:ExpenseExampleNoRedemptionYear05>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978303" unitRef="pure" decimals="2" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1003_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978303" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1003_16">0.0100</rr:DistributionAndService12b1FeesOverAssets>
  <rr:NetExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978303" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1003_22">0.0170</rr:NetExpensesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978303" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1003_19">0.0187</rr:ExpensesOverAssets>
  <rr:MaximumAccountFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978303" unitRef="iso4217_USD" decimals="0" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1003_13">10</rr:MaximumAccountFee>
  <rr:AcquiredFundFeesAndExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978303" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1003_18">0.0033</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978303" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1003_10">0.0500</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978304" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1002_0">CENAX</dei:TradingSymbol>
  <rr:RedemptionFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978304" unitRef="iso4217_USD" decimals="0" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1002_12">0</rr:RedemptionFee>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978304" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1002_9">0.0250</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:ExpenseExampleYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978304" unitRef="iso4217_USD" decimals="0" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1002_26">358</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978304" unitRef="iso4217_USD" decimals="0" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1002_27">602</rr:ExpenseExampleYear03>
  <rr:FeeWaiverOrReimbursementOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978304" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1002_20">-0.0017</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:ExpenseExampleYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978304" unitRef="iso4217_USD" decimals="0" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1002_29">1600</rr:ExpenseExampleYear10>
  <rr:ExpenseExampleYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978304" unitRef="iso4217_USD" decimals="0" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1002_28">862</rr:ExpenseExampleYear05>
  <rr:OtherExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978304" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1002_17">0.0038</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978304" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1002_15">0.0010</rr:ManagementFeesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978304" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1002_21">2013-12-31</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978304" unitRef="pure" decimals="2" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1002_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978304" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1002_16">0.0025</rr:DistributionAndService12b1FeesOverAssets>
  <rr:NetExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978304" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1002_22">0.0089</rr:NetExpensesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978304" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1002_19">0.0106</rr:ExpensesOverAssets>
  <rr:MaximumAccountFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978304" unitRef="iso4217_USD" decimals="0" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1002_13">10</rr:MaximumAccountFee>
  <rr:AcquiredFundFeesAndExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978304" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1002_18">0.0033</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978292_602238x-9978285_602488x-9978304" unitRef="pure" decimals="4" id="id_716109_A05DB811-50C6-45D4-A175-D34977D4E759_1002_10">0.0100</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <rr:PortfolioTurnoverTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1001_36">&lt;tt&gt;The fund may pay transaction costs, such as commissions, when it buys and &lt;br /&gt;sells securities (or "turns over" its portfolio). A higher portfolio turnover &lt;br /&gt;rate may indicate higher transaction costs. 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.&lt;/tt&gt;</rr:PortfolioTurnoverTextBlock>
  <rr:ExpenseExampleWithRedemptionTableTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1001_47">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/ExpenseExample_S000037539Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:ExpenseExampleWithRedemptionTableTextBlock>
  <rr:ObjectivePrimaryTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1001_3">&lt;tt&gt;The fund will seek to achieve the following objectives to varying degrees:&lt;br /&gt;growth, income and preservation of capital, depending on the proximity to its&lt;br /&gt;target date. The target date is meant to roughly correspond to the year in which&lt;br /&gt;the fund beneficiary will start to withdraw funds to meet higher education&lt;br /&gt;expenses. The fund will increasingly emphasize income and preservation of&lt;br /&gt;capital by investing a greater portion of its assets in bond, equity-income and&lt;br /&gt;balanced funds as it approaches and passes its target date. In this way, the&lt;br /&gt;fund seeks to achieve an appropriate balance of total return and stability&lt;br /&gt;during different time periods.&lt;/tt&gt;</rr:ObjectivePrimaryTextBlock>
  <rr:ExpenseExampleNarrativeTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1001_24">&lt;tt&gt;This example is intended to help you compare the cost of investing in the fund &lt;br /&gt;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_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1001_38">&lt;tt&gt;The fund will attempt to achieve its investment objectives by investing in a &lt;br /&gt;mix of American Funds in different combinations and weightings. The underlying&lt;br /&gt;American Funds represent a variety of fund categories such as equity-income&lt;br /&gt;funds, balanced funds and bond funds. The fund categories represent differing&lt;br /&gt;investment objectives. For example, equity-income and balanced funds generally&lt;br /&gt;strive for income and growth through stocks and/or bond investments, while bond&lt;br /&gt;funds seek current income through bond investments.&lt;br /&gt; &lt;br /&gt;The investment adviser may periodically rebalance or modify the asset mix of &lt;br /&gt;the funds and change the underlying fund investments. According to its current&lt;br /&gt;investment approach, the percentage of the fund invested in different categories&lt;br /&gt;will change until the fund reaches its target date. Upon reaching its target&lt;br /&gt;date, the fund will be principally invested in fixed-income funds and may merge&lt;br /&gt;into the Enrollment Fund, which will also be principally invested in&lt;br /&gt;fixed-income funds.&lt;br /&gt; &lt;br /&gt;The fund&apos;s investment adviser periodically reviews the investment strategies and&lt;br /&gt;asset mix of the underlying funds. The investment adviser will also consider&lt;br /&gt;whether overall market conditions would favor a change in the exposure of the&lt;br /&gt;fund to various asset types or geographic regions. Based on these considerations, &lt;br /&gt;the investment adviser may make adjustments to underlying fund holdings by &lt;br /&gt;adjusting the percentage of individual underlying funds within the fund, or &lt;br /&gt;adding or removing underlying funds. The investment adviser may also determine &lt;br /&gt;not to change the underlying fund allocations, particularly in response to &lt;br /&gt;short-term market movements, if in its opinion the combination of underlying &lt;br /&gt;funds is appropriate to meet the fund&apos;s investment objective.&lt;br /&gt; &lt;br /&gt;With respect to its fixed-income investments, the underlying funds in which the&lt;br /&gt;fund invests may hold debt securities with a wide range of quality and maturities. &lt;br /&gt;The fund may invest in underlying funds with significant exposure to bonds rated &lt;br /&gt;BB+ or below and Ba1 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." Exposure to lower rated securities may help the fund achieve its&lt;br /&gt;objective of providing current income.&lt;br /&gt; &lt;br /&gt;The underlying funds may hold securities issued and guaranteed by the U.S.&lt;br /&gt;government, securities issued by federal agencies and instrumentalities and&lt;br /&gt;securities backed by mortgages or other assets. The underlying funds may also&lt;br /&gt;invest in the debt securities of governments, agencies, corporations and other&lt;br /&gt;entities domiciled outside the United States.&lt;br /&gt;&lt;br /&gt;The following chart illustrates the current investment approach of the fund by&lt;br /&gt;showing how its investment in the various fund categories will change over time.&lt;br /&gt; &lt;br /&gt;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;Current investment approach &lt;br /&gt;&lt;br /&gt;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;2030&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;2027&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;2024&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;2021&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;2018&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;2015&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;Enrollment&lt;br /&gt;&lt;br /&gt;Growth funds&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;20%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;15%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;10%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&lt;br /&gt;Growth-and-income funds&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;70%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;55%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;45%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;40%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;20%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&lt;br /&gt;Equity-income and balanced funds&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;10%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;10%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;15%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;20%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;10%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&lt;br /&gt;Bond funds&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;10%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;20%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;35%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;45%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;60%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;90%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;100%&lt;br /&gt;&lt;br /&gt;Years to distribution&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;15-18&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;12-15&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;9-12&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;6-9&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;3-6&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0-3&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;target date&lt;br /&gt;&lt;br /&gt;&lt;br /&gt;The investment adviser anticipates that the fund will invest its assets within a&lt;br /&gt;range that deviates no more than 10% above or below the investment approach set&lt;br /&gt;forth above. For example, a 20% target allocation to growth funds is not expected &lt;br /&gt;to be greater than 30% or less than 10%. The investment adviser will continuously &lt;br /&gt;monitor the fund and may make modifications to either the investment approach or &lt;br /&gt;the underlying fund allocations that the investment adviser believes could benefit &lt;br /&gt;shareholders.&lt;/tt&gt;</rr:StrategyNarrativeTextBlock>
  <rr:RiskReturnHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1001_1">American Funds College 2015 FundSM</rr:RiskReturnHeading>
  <rr:ExpenseBreakpointDiscounts contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1001_6">You may qualify for a Class 529-A sales charge discount if you and your family
invest, or agree to invest in the future, at least $25,000 in American Funds.</rr:ExpenseBreakpointDiscounts>
  <rr:ExpenseExampleHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1001_23">Example</rr:ExpenseExampleHeading>
  <rr:PerformanceOneYearOrLess contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1001_45">Because the fund began investment operations on September 14, 2012, information
regarding investment results is not available as of the date of this prospectus.</rr:PerformanceOneYearOrLess>
  <rr:ObjectiveHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1001_2">Investment objectives</rr:ObjectiveHeading>
  <rr:RiskLoseMoney contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1001_41">You may lose money by investing in the fund.</rr:RiskLoseMoney>
  <rr:RiskHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1001_39">Principal risks</rr:RiskHeading>
  <rr:ShareholderFeesCaption contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1001_8">Shareholder fees (fees paid directly from your investment) </rr:ShareholderFeesCaption>
  <rr:ExpenseExampleByYearCaption contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1001_25">Although your actual costs may be higher or lower, based on these assumptions your costs would be:</rr:ExpenseExampleByYearCaption>
  <rr:BarChartAndPerformanceTableHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1001_43">Investment results</rr:BarChartAndPerformanceTableHeading>
  <rr:ExpenseBreakpointMinimumInvestmentRequiredAmount contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286" unitRef="iso4217_USD" decimals="0" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1001_7">25000</rr:ExpenseBreakpointMinimumInvestmentRequiredAmount>
  <rr:OperatingExpensesCaption contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1001_14">Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)</rr:OperatingExpensesCaption>
  <rr:PortfolioTurnoverHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1001_35">Portfolio turnover</rr:PortfolioTurnoverHeading>
  <rr:RiskNarrativeTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_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;Investors in the fund should have a long-term perspective and be able to&lt;br /&gt;tolerate potentially sharp declines in value.&lt;br /&gt; &lt;br /&gt;Allocation risk - Investments in the fund are subject to risks related to the&lt;br /&gt;investment adviser&apos;s allocation choices. The selection of the underlying funds&lt;br /&gt;and the allocation of the fund&apos;s assets could cause the fund to lose value or&lt;br /&gt;its results to lag relevant benchmarks or other funds with similar objectives.&lt;br /&gt; &lt;br /&gt;Fund structure - The fund invests in underlying funds and incurs expenses&lt;br /&gt;related to the underlying funds. In addition, investors in the fund will incur&lt;br /&gt;fees to pay for certain expenses related to the operations of the fund. An&lt;br /&gt;investor holding the underlying funds directly and in the same proportions as&lt;br /&gt;the fund would incur lower overall expenses but would not receive the benefit &lt;br /&gt;of the portfolio management and other services provided by the fund.&lt;br /&gt; &lt;br /&gt;Because the fund&apos;s investments consist of underlying funds, the fund&apos;s risks are&lt;br /&gt;directly related to the risks of the underlying funds. For this reason, it is&lt;br /&gt;important to understand the risks associated with investing in the underlying&lt;br /&gt;funds.&lt;br /&gt; &lt;br /&gt;Market conditions - The prices of, and the income generated by, the common&lt;br /&gt;stocks, bonds and other securities held by the underlying funds may decline &lt;br /&gt;due to market conditions and other factors, including those directly involving &lt;br /&gt;the issuers of securities held by the underlying funds.&lt;br /&gt; &lt;br /&gt;Investing in stocks - Investing in stocks may involve larger price swings and&lt;br /&gt;greater potential for loss than other types of investments. As a result, the&lt;br /&gt;value of the underlying funds may be subject to sharp, short-term declines in&lt;br /&gt;value. Income provided by an underlying fund may be reduced by changes in the&lt;br /&gt;dividend policies of, and the capital resources available at, the companies in&lt;br /&gt;which the underlying fund invests.&lt;br /&gt; &lt;br /&gt;Investing in income-oriented stocks - Income provided by an underlying fund may&lt;br /&gt;be reduced by changes in the dividend policies of, and the capital resources&lt;br /&gt;available at, the companies in which the underlying fund invests.&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 &lt;br /&gt;be 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&lt;br /&gt;underlying fund 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. Credit risk is gauged, in part, by the&lt;br /&gt;credit ratings of the securities in which the underlying fund invests. However,&lt;br /&gt;ratings are only the opinions of the rating agencies issuing them and are not&lt;br /&gt;guarantees as to credit quality or an evaluation of market risk.&lt;br /&gt;&amp;#xA0;&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 may&lt;br /&gt;be increased with respect to investments in bonds rated Ba1 or BB+ or below by&lt;br /&gt;Nationally Recognized Statistical Rating Organizations or unrated but determined&lt;br /&gt;by the underlying fund&apos;s investment adviser to be of equivalent quality. Such&lt;br /&gt;securities are considered speculative and are sometimes referred to as "junk&lt;br /&gt;bonds." The value of the underlying funds may be similarly affected.&lt;br /&gt; &lt;br /&gt;Investing outside the United States - Securities of issuers domiciled outside&lt;br /&gt;the United States, or with significant operations outside the United States, &lt;br /&gt;may lose value because of adverse political, social, economic or market &lt;br /&gt;developments in the countries or regions in which the issuer operates. These &lt;br /&gt;securities may also lose value due to changes in foreign currency exchange rates &lt;br /&gt;against the U.S. dollar and/or currencies of other countries. Securities markets &lt;br /&gt;in certain countries may be more volatile and/or less liquid than those in the &lt;br /&gt;United States. Investments outside the United States may also be subject to &lt;br /&gt;different settlement and accounting practices and different regulatory, legal &lt;br /&gt;and reporting standards, and may be more difficult to value, than those in the&lt;br /&gt;United States. The risks of investing outside the United States may be&lt;br /&gt;heightened in connection with investments in emerging markets.&lt;br /&gt; &lt;br /&gt;Investing in emerging markets - Investing in emerging markets may involve risks&lt;br /&gt;in addition to and greater than those generally associated with investing in&lt;br /&gt;developed countries. For instance, developing countries may have less developed&lt;br /&gt;legal and accounting systems than those in developed countries. The governments&lt;br /&gt;of these countries may be less stable and more likely to impose capital controls, &lt;br /&gt;nationalize a company or industry, place restrictions on foreign ownership and &lt;br /&gt;on withdrawing sale proceeds of securities from the country, and/or impose punitive &lt;br /&gt;taxes that could adversely affect the prices of securities. In addition, the &lt;br /&gt;economies of these countries may be dependent on relatively few industries that &lt;br /&gt;are more susceptible to local and global changes. Securities markets in these &lt;br /&gt;countries can also be relatively small and have substantially lower trading &lt;br /&gt;volumes. As a result, securities issued in these countries may be more volatile &lt;br /&gt;and less liquid, and may be more difficult to value, than securities issued in &lt;br /&gt;countries with more developed economies and/or markets. Additionally, there may &lt;br /&gt;be increased settlement risks for transactions in local securities.&lt;br /&gt; &lt;br /&gt;Investing in mortgage-backed and asset-backed securities - Many types of bonds&lt;br /&gt;and other debt securities, including mortgage-backed/related securities, are&lt;br /&gt;subject to prepayment risk as well as the risks associated with investing in&lt;br /&gt;debt securities in general. If interest rates fall and the loans underlying&lt;br /&gt;these securities are prepaid faster than expected, the underlying fund may have&lt;br /&gt;to reinvest the prepaid principal in lower yielding securities, thus reducing&lt;br /&gt;the fund&apos;s income. Conversely, if interest rates increase and the loans&lt;br /&gt;underlying the securities are prepaid more slowly than expected, the expected&lt;br /&gt;duration of the securities may be extended, reducing the cash flow for potential&lt;br /&gt;reinvestment in higher yielding securities.&lt;br /&gt; &lt;br /&gt;Investing in U.S. government securities - Securities backed by the U.S. Treasury&lt;br /&gt;or the full faith and credit of the U.S. government are guaranteed only as to&lt;br /&gt;the timely payment of interest and principal when held to maturity. Accordingly,&lt;br /&gt;the current market values for these securities will fluctuate with changes in&lt;br /&gt;interest rates. Securities issued by government-sponsored entities and federal&lt;br /&gt;agencies and instrumentalities that are not backed by the full faith and credit&lt;br /&gt;of the U.S. government are neither issued nor guaranteed by the U.S. government.&lt;br /&gt; &lt;br /&gt;Investing in future delivery contracts - Contracts for future delivery of&lt;br /&gt;mortgage-related securities, such as to be announced contracts and mortgage&lt;br /&gt;dollar rolls, involve the fund selling mortgage-related securities and&lt;br /&gt;simultaneously contracting to repurchase similar securities for delivery at a&lt;br /&gt;future date at a predetermined price. This can increase the underlying fund&apos;s&lt;br /&gt;market exposure, and the market price of the securities the fund contracts to&lt;br /&gt;repurchase could drop below their purchase price. While the fund can preserve&lt;br /&gt;and generate capital through the use of such contracts by, for example,&lt;br /&gt;realizing the difference between the sale price and the future purchase price,&lt;br /&gt;the income generated by the fund may be reduced by engaging in such transactions. &lt;br /&gt;In addition, these transactions may increase the turnover rate of the fund.&lt;br /&gt; &lt;br /&gt;Management - The investment adviser to the fund and to the underlying funds&lt;br /&gt;actively manages each underlying fund&apos;s investments. Consequently, the&lt;br /&gt;underlying funds are subject to the risk that the methods and analyses employed&lt;br /&gt;by the investment adviser in this process may not produce the desired results.&lt;br /&gt;This could cause an underlying fund to lose value or its investment results to&lt;br /&gt;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 &lt;br /&gt;or 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_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1001_4">Fees and expenses of the fund</rr:ExpenseHeading>
  <rr:StrategyHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1001_37">Principal investment strategies</rr:StrategyHeading>
  <rr:PerformanceNarrativeTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1001_44">&lt;tt&gt;Because the fund began investment operations on September 14, 2012, information&lt;br /&gt;regarding investment results is not available as of the date of this prospectus.&lt;/tt&gt;</rr:PerformanceNarrativeTextBlock>
  <rr:ExpenseNarrativeTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_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 a Class 529-A sales charge discount if&lt;br /&gt;you and your family invest, or agree to invest in the future, at least $25,000&lt;br /&gt;in American Funds. More information about these and other discounts is available&lt;br /&gt;from your financial professional and in the "Sales charge reductions and&lt;br /&gt;waivers" section on page 51 of the prospectus and on page 65 of the fund&apos;s&lt;br /&gt;statement of additional information.&lt;/tt&gt;</rr:ExpenseNarrativeTextBlock>
  <rr:AnnualFundOperatingExpensesTableTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1001_49">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/OperatingExpensesData_S000037539Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:AnnualFundOperatingExpensesTableTextBlock>
  <rr:ExpenseExampleNoRedemptionByYearCaption contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1001_30">For the share classes listed below, you would pay the following if you did not redeem your shares:</rr:ExpenseExampleNoRedemptionByYearCaption>
  <rr:RiskNotInsuredDepositoryInstitution contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_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>
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  <dei:TradingSymbol contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978305" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1006_0">CFIFX</dei:TradingSymbol>
  <rr:RedemptionFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978305" unitRef="iso4217_USD" decimals="0" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1006_12">0</rr:RedemptionFee>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978305" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1006_9">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:ExpenseExampleYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978305" unitRef="iso4217_USD" decimals="0" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1006_26">85</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978305" unitRef="iso4217_USD" decimals="0" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1006_27">268</rr:ExpenseExampleYear03>
  <rr:FeeWaiverOrReimbursementOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978305" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1006_20">-0.0011</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:ExpenseExampleYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978305" unitRef="iso4217_USD" decimals="0" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1006_29">1025</rr:ExpenseExampleYear10>
  <rr:ExpenseExampleYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978305" unitRef="iso4217_USD" decimals="0" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1006_28">465</rr:ExpenseExampleYear05>
  <rr:OtherExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978305" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1006_17">0.0035</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978305" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1006_15">0.0010</rr:ManagementFeesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978305" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1006_21">2013-12-31</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978305" unitRef="pure" decimals="2" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1006_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978305" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1006_16">0.0000</rr:DistributionAndService12b1FeesOverAssets>
  <rr:NetExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978305" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1006_22">0.0064</rr:NetExpensesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978305" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1006_19">0.0075</rr:ExpensesOverAssets>
  <rr:MaximumAccountFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978305" unitRef="iso4217_USD" decimals="0" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1006_13">10</rr:MaximumAccountFee>
  <rr:AcquiredFundFeesAndExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978305" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1006_18">0.0030</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978305" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1006_10">0.0000</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978306" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1005_0">CFIEX</dei:TradingSymbol>
  <rr:RedemptionFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978306" unitRef="iso4217_USD" decimals="0" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1005_12">0</rr:RedemptionFee>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978306" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1005_9">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:ExpenseExampleYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978306" unitRef="iso4217_USD" decimals="0" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1005_26">130</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978306" unitRef="iso4217_USD" decimals="0" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1005_27">406</rr:ExpenseExampleYear03>
  <rr:FeeWaiverOrReimbursementOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978306" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1005_20">-0.0011</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:ExpenseExampleYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978306" unitRef="iso4217_USD" decimals="0" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1005_29">1535</rr:ExpenseExampleYear10>
  <rr:ExpenseExampleYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978306" unitRef="iso4217_USD" decimals="0" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1005_28">702</rr:ExpenseExampleYear05>
  <rr:OtherExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978306" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1005_17">0.0029</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978306" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1005_15">0.0010</rr:ManagementFeesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978306" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1005_21">2013-12-31</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978306" unitRef="pure" decimals="2" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1005_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978306" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1005_16">0.0050</rr:DistributionAndService12b1FeesOverAssets>
  <rr:NetExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978306" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1005_22">0.0108</rr:NetExpensesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978306" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1005_19">0.0119</rr:ExpensesOverAssets>
  <rr:MaximumAccountFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978306" unitRef="iso4217_USD" decimals="0" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1005_13">10</rr:MaximumAccountFee>
  <rr:AcquiredFundFeesAndExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978306" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1005_18">0.0030</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978306" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1005_10">0.0000</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978307" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1004_0">CFFCX</dei:TradingSymbol>
  <rr:RedemptionFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978307" unitRef="iso4217_USD" decimals="0" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1004_12">0</rr:RedemptionFee>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978307" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1004_9">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:ExpenseExampleYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978307" unitRef="iso4217_USD" decimals="0" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1004_26">283</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleNoRedemptionYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978307" unitRef="iso4217_USD" decimals="0" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1004_31">183</rr:ExpenseExampleNoRedemptionYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978307" unitRef="iso4217_USD" decimals="0" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1004_27">570</rr:ExpenseExampleYear03>
  <rr:FeeWaiverOrReimbursementOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978307" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1004_20">-0.0011</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:ExpenseExampleYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978307" unitRef="iso4217_USD" decimals="0" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1004_29">2120</rr:ExpenseExampleYear10>
  <rr:ExpenseExampleYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978307" unitRef="iso4217_USD" decimals="0" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1004_28">980</rr:ExpenseExampleYear05>
  <rr:OtherExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978307" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1004_17">0.0032</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978307" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1004_15">0.0010</rr:ManagementFeesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978307" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1004_21">2013-12-31</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:ExpenseExampleNoRedemptionYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978307" unitRef="iso4217_USD" decimals="0" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1004_34">2120</rr:ExpenseExampleNoRedemptionYear10>
  <rr:ExpenseExampleNoRedemptionYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978307" unitRef="iso4217_USD" decimals="0" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1004_32">570</rr:ExpenseExampleNoRedemptionYear03>
  <rr:ExpenseExampleNoRedemptionYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978307" unitRef="iso4217_USD" decimals="0" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1004_33">980</rr:ExpenseExampleNoRedemptionYear05>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978307" unitRef="pure" decimals="2" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1004_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978307" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1004_16">0.0100</rr:DistributionAndService12b1FeesOverAssets>
  <rr:NetExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978307" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1004_22">0.0161</rr:NetExpensesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978307" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1004_19">0.0172</rr:ExpensesOverAssets>
  <rr:MaximumAccountFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978307" unitRef="iso4217_USD" decimals="0" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1004_13">10</rr:MaximumAccountFee>
  <rr:AcquiredFundFeesAndExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978307" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1004_18">0.0030</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978307" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1004_10">0.0100</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978308" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1003_0">CFIBX</dei:TradingSymbol>
  <rr:RedemptionFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978308" unitRef="iso4217_USD" decimals="0" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1003_12">0</rr:RedemptionFee>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978308" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1003_9">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:ExpenseExampleYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978308" unitRef="iso4217_USD" decimals="0" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1003_26">690</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleNoRedemptionYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978308" unitRef="iso4217_USD" decimals="0" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1003_31">190</rr:ExpenseExampleNoRedemptionYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978308" unitRef="iso4217_USD" decimals="0" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1003_27">988</rr:ExpenseExampleYear03>
  <rr:FeeWaiverOrReimbursementOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978308" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1003_20">-0.0011</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:ExpenseExampleYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978308" unitRef="iso4217_USD" decimals="0" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1003_29">1972</rr:ExpenseExampleYear10>
  <rr:ExpenseExampleYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978308" unitRef="iso4217_USD" decimals="0" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1003_28">1211</rr:ExpenseExampleYear05>
  <rr:OtherExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978308" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1003_17">0.0038</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978308" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1003_15">0.0010</rr:ManagementFeesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978308" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1003_21">2013-12-31</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:ExpenseExampleNoRedemptionYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978308" unitRef="iso4217_USD" decimals="0" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1003_34">1972</rr:ExpenseExampleNoRedemptionYear10>
  <rr:ExpenseExampleNoRedemptionYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978308" unitRef="iso4217_USD" decimals="0" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1003_32">588</rr:ExpenseExampleNoRedemptionYear03>
  <rr:ExpenseExampleNoRedemptionYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978308" unitRef="iso4217_USD" decimals="0" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1003_33">1011</rr:ExpenseExampleNoRedemptionYear05>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978308" unitRef="pure" decimals="2" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1003_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978308" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1003_16">0.0100</rr:DistributionAndService12b1FeesOverAssets>
  <rr:NetExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978308" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1003_22">0.0167</rr:NetExpensesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978308" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1003_19">0.0178</rr:ExpensesOverAssets>
  <rr:MaximumAccountFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978308" unitRef="iso4217_USD" decimals="0" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1003_13">10</rr:MaximumAccountFee>
  <rr:AcquiredFundFeesAndExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978308" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1003_18">0.0030</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978308" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1003_10">0.0500</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978309" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1002_0">CFFAX</dei:TradingSymbol>
  <rr:RedemptionFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978309" unitRef="iso4217_USD" decimals="0" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1002_12">0</rr:RedemptionFee>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978309" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1002_9">0.0425</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:ExpenseExampleYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978309" unitRef="iso4217_USD" decimals="0" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1002_26">529</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978309" unitRef="iso4217_USD" decimals="0" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1002_27">750</rr:ExpenseExampleYear03>
  <rr:FeeWaiverOrReimbursementOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978309" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1002_20">-0.0011</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:ExpenseExampleYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978309" unitRef="iso4217_USD" decimals="0" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1002_29">1658</rr:ExpenseExampleYear10>
  <rr:ExpenseExampleYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978309" unitRef="iso4217_USD" decimals="0" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1002_28">986</rr:ExpenseExampleYear05>
  <rr:OtherExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978309" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1002_17">0.0032</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978309" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1002_15">0.0010</rr:ManagementFeesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978309" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1002_21">2013-12-31</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978309" unitRef="pure" decimals="2" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1002_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978309" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1002_16">0.0025</rr:DistributionAndService12b1FeesOverAssets>
  <rr:NetExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978309" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1002_22">0.0086</rr:NetExpensesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978309" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1002_19">0.0097</rr:ExpensesOverAssets>
  <rr:MaximumAccountFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978309" unitRef="iso4217_USD" decimals="0" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1002_13">10</rr:MaximumAccountFee>
  <rr:AcquiredFundFeesAndExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978309" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1002_18">0.0030</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978293_602238x-9978286_602488x-9978309" unitRef="pure" decimals="4" id="id_716109_60AF1EF1-95CC-47C4-BBEA-F1C498332C1F_1002_10">0.0100</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <rr:PortfolioTurnoverTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1001_36">&lt;tt&gt;The fund may pay transaction costs, such as commissions, when it buys and &lt;br /&gt;sells securities (or "turns over" its portfolio). A higher portfolio turnover &lt;br /&gt;rate may indicate higher transaction costs. 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.&lt;/tt&gt;</rr:PortfolioTurnoverTextBlock>
  <rr:ExpenseExampleWithRedemptionTableTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1001_47">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/ExpenseExample_S000037538Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:ExpenseExampleWithRedemptionTableTextBlock>
  <rr:ObjectivePrimaryTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1001_3">&lt;tt&gt;The fund will seek to achieve the following objectives to varying degrees:&lt;br /&gt;growth, income and preservation of capital, depending on the proximity to &lt;br /&gt;its target date. The target date is meant to roughly correspond to the year &lt;br /&gt;in which the fund beneficiary will start to withdraw funds to meet higher &lt;br /&gt;education expenses. The fund will increasingly emphasize income and preservation &lt;br /&gt;of capital by investing a greater portion of its assets in bond, equity-income &lt;br /&gt;and balanced funds as it approaches and passes its target date. In this way, &lt;br /&gt;the fund seeks to achieve an appropriate balance of total return and stability&lt;br /&gt;during different time periods.&lt;/tt&gt;</rr:ObjectivePrimaryTextBlock>
  <rr:ExpenseExampleNarrativeTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1001_24">&lt;tt&gt;This example is intended to help you compare the cost of investing in the fund &lt;br /&gt;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_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1001_38">&lt;tt&gt;The fund will attempt to achieve its investment objectives by investing in a &lt;br /&gt;mix of American Funds in different combinations and weightings. The underlying&lt;br /&gt;American Funds represent a variety of fund categories such as growth-and-income&lt;br /&gt;funds, equity-income funds, balanced funds and bond funds. The fund categories&lt;br /&gt;represent differing investment objectives. For example, growth-and-income funds&lt;br /&gt;seek long-term growth-and-income primarily through investments in stocks.&lt;br /&gt;Equity-income and balanced funds generally strive for income and growth through&lt;br /&gt;stocks and/or bond investments, while bond funds seek current income through&lt;br /&gt;bond investments.&lt;br /&gt; &lt;br /&gt;The investment adviser may periodically rebalance or modify the asset mix of &lt;br /&gt;the funds and change the underlying fund investments. According to its current&lt;br /&gt;investment approach, the percentage of the fund invested in different categories&lt;br /&gt;will change until the fund reaches its target date. Upon reaching its target&lt;br /&gt;date, the fund will be principally invested in fixed-income funds and may merge&lt;br /&gt;into the Enrollment Fund, which will also be principally invested in fixed-income &lt;br /&gt;funds.&lt;br /&gt; &lt;br /&gt;The fund&apos;s investment adviser periodically reviews the investment strategies &lt;br /&gt;and asset mix of the underlying funds. The investment adviser will also consider&lt;br /&gt;whether overall market conditions would favor a change in the exposure of the&lt;br /&gt;fund to various asset types or geographic regions. Based on these considerations, &lt;br /&gt;the investment adviser may make adjustments to underlying fund holdings by &lt;br /&gt;adjusting the percentage of individual underlying funds within the fund, or &lt;br /&gt;adding or removing underlying funds. The investment adviser may also determine &lt;br /&gt;not to change the underlying fund allocations, particularly in response to &lt;br /&gt;short-term market movements, if in its opinion the combination of underlying &lt;br /&gt;funds is appropriate to meet the fund&apos;s investment objective.&lt;br /&gt; &lt;br /&gt;With respect to its fixed-income investments, the underlying funds in which the&lt;br /&gt;fund invests may hold debt securities with a wide range of quality and maturities. &lt;br /&gt;The fund may invest in underlying funds with significant exposure to bonds rated &lt;br /&gt;BB+ or below and Ba1 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." Exposure to lower rated securities may help the fund achieve &lt;br /&gt;its objective of providing current income.&lt;br /&gt; &lt;br /&gt;The underlying funds may hold securities issued and guaranteed by the U.S.&lt;br /&gt;government, securities issued by federal agencies and instrumentalities and&lt;br /&gt;securities backed by mortgages or other assets. The underlying funds may &lt;br /&gt;also invest in the debt securities of governments, agencies, corporations &lt;br /&gt;and other entities domiciled outside the United States.&lt;br /&gt;&amp;#xA0;&amp;#xA0;&lt;br /&gt;The following chart illustrates the current investment approach of the fund by&lt;br /&gt;showing how its investment in the various fund categories will change over time.&lt;br /&gt; &lt;br /&gt;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;Current investment approach &lt;br /&gt;&lt;br /&gt;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;2030&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;2027&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;2024&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;2021&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;2018&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;2015&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;Enrollment&lt;br /&gt;&lt;br /&gt;Growth funds&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;20%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;15%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;10%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&lt;br /&gt;Growth-and-income funds&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;70%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;55%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;45%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;40%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;20%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&lt;br /&gt;Equity-income and balanced funds&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;10%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;10%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;15%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;20%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;10%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&lt;br /&gt;Bond funds&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;10%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;20%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;35%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;45%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;60%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;90%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;100%&lt;br /&gt;&lt;br /&gt;Years to distribution&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;15-18&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;12-15&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;9-12&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;6-9&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;3-6&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0-3&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;target date&lt;br /&gt;&lt;br /&gt;&lt;br /&gt;The investment adviser anticipates that the fund will invest its assets within &lt;br /&gt;a range that deviates no more than 10% above or below the investment approach&lt;br /&gt;set forth above. For example, a 20% target allocation to growth funds is not&lt;br /&gt;expected to be greater than 30% or less than 10%. The investment adviser will&lt;br /&gt;continuously monitor the fund and may make modifications to either the&lt;br /&gt;investment approach or the underlying fund allocations that the investment&lt;br /&gt;adviser believes could benefit shareholders.&lt;/tt&gt;</rr:StrategyNarrativeTextBlock>
  <rr:RiskReturnHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1001_1">American Funds College 2018 FundSM</rr:RiskReturnHeading>
  <rr:ExpenseBreakpointDiscounts contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1001_6">You may qualify for a Class 529-A sales charge discount if you and your
family invest, or agree to invest in the future, at least $25,000 in
American Funds.</rr:ExpenseBreakpointDiscounts>
  <rr:ExpenseExampleHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1001_23">Example</rr:ExpenseExampleHeading>
  <rr:PerformanceOneYearOrLess contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1001_45">Because the fund began investment operations on September 14, 2012, information
regarding investment results is not available as of the date of this prospectus.</rr:PerformanceOneYearOrLess>
  <rr:ObjectiveHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1001_2">Investment objectives</rr:ObjectiveHeading>
  <rr:RiskLoseMoney contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1001_41">You may lose money by investing in the fund.</rr:RiskLoseMoney>
  <rr:RiskHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1001_39">Principal risks</rr:RiskHeading>
  <rr:ShareholderFeesCaption contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1001_8">Shareholder fees (fees paid directly from your investment)</rr:ShareholderFeesCaption>
  <rr:ExpenseExampleByYearCaption contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1001_25">Although your actual costs may be higher or lower, based on these assumptions your costs would be:</rr:ExpenseExampleByYearCaption>
  <rr:BarChartAndPerformanceTableHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1001_43">Investment results</rr:BarChartAndPerformanceTableHeading>
  <rr:ExpenseBreakpointMinimumInvestmentRequiredAmount contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287" unitRef="iso4217_USD" decimals="0" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1001_7">25000</rr:ExpenseBreakpointMinimumInvestmentRequiredAmount>
  <rr:OperatingExpensesCaption contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1001_14">Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment) </rr:OperatingExpensesCaption>
  <rr:PortfolioTurnoverHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1001_35">Portfolio turnover</rr:PortfolioTurnoverHeading>
  <rr:RiskNarrativeTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_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;Investors in the fund should have a long-term perspective and be able to&lt;br /&gt;tolerate potentially sharp declines in value.&lt;br /&gt; &lt;br /&gt;Allocation risk - Investments in the fund are subject to risks related to the&lt;br /&gt;investment adviser&apos;s allocation choices. The selection of the underlying funds&lt;br /&gt;and the allocation of the fund&apos;s assets could cause the fund to lose value or&lt;br /&gt;its results to lag relevant benchmarks or other funds with similar objectives.&lt;br /&gt; &lt;br /&gt;Fund structure - The fund invests in underlying funds and incurs expenses&lt;br /&gt;related to the underlying funds. In addition, investors in the fund will incur&lt;br /&gt;fees to pay for certain expenses related to the operations of the fund. An&lt;br /&gt;investor holding the underlying funds directly and in the same proportions as&lt;br /&gt;the fund would incur lower overall expenses but would not receive the benefit &lt;br /&gt;of the portfolio management and other services provided by the fund.&lt;br /&gt; &lt;br /&gt;Because the fund&apos;s investments consist of underlying funds, the fund&apos;s risks are&lt;br /&gt;directly related to the risks of the underlying funds. For this reason, it is&lt;br /&gt;important to understand the risks associated with investing in the underlying&lt;br /&gt;funds.&lt;br /&gt; &lt;br /&gt;Market conditions - The prices of, and the income generated by, the common&lt;br /&gt;stocks, bonds and other securities held by the underlying funds may decline &lt;br /&gt;due to market conditions and other factors, including those directly involving &lt;br /&gt;the issuers of securities held by the underlying funds.&lt;br /&gt; &lt;br /&gt;Investing in stocks - Investing in stocks may involve larger price swings and&lt;br /&gt;greater potential for loss than other types of investments. As a result, the&lt;br /&gt;value of the underlying funds may be subject to sharp, short-term declines in&lt;br /&gt;value. Income provided by an underlying fund may be reduced by changes in the&lt;br /&gt;dividend policies of, and the capital resources available at, the companies in&lt;br /&gt;which the underlying fund invests.&lt;br /&gt; &lt;br /&gt;Investing in growth-oriented stocks - Growth-oriented stocks may involve larger&lt;br /&gt;price swings and greater potential for loss than other types of investments.&lt;br /&gt; &lt;br /&gt;Investing in income-oriented stocks - Income provided by an underlying fund may&lt;br /&gt;be reduced by changes in the dividend policies of, and the capital resources&lt;br /&gt;available at, the companies in which the underlying fund invests.&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&lt;br /&gt;underlying fund 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. Credit risk is gauged, in part, by the&lt;br /&gt;credit ratings of the securities in which the underlying fund invests. However,&lt;br /&gt;ratings are only the opinions of the rating agencies issuing them and are not&lt;br /&gt;guarantees as to credit quality or an evaluation of market risk.&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 may&lt;br /&gt;be increased with respect to investments in bonds rated Ba1 or BB+ or below by&lt;br /&gt;Nationally Recognized Statistical Rating Organizations or unrated but determined&lt;br /&gt;by the underlying fund&apos;s investment adviser to be of equivalent quality. Such&lt;br /&gt;securities are considered speculative and are sometimes referred to as "junk&lt;br /&gt;bonds." The value of the underlying funds may be similarly affected.&lt;br /&gt; &lt;br /&gt;Investing in small companies - Investing in smaller companies may pose&lt;br /&gt;additional risks. For example, it is often more difficult to value or dispose &lt;br /&gt;of small company stocks and more difficult to obtain information about smaller&lt;br /&gt;companies than about larger companies. In addition, the prices of these stocks&lt;br /&gt;may be more volatile than stocks of larger, more established companies.&lt;br /&gt; &lt;br /&gt;Investing outside the United States - Securities of issuers domiciled outside&lt;br /&gt;the United States, or with significant operations outside the United States, may&lt;br /&gt;lose value because of adverse political, social, economic or market developments&lt;br /&gt;in the countries or regions in which the issuer operates. These securities may&lt;br /&gt;also lose value due to changes in foreign currency exchange rates against the&lt;br /&gt;U.S. dollar and/or currencies of other countries. Securities markets in certain&lt;br /&gt;countries may be more volatile and/or less liquid than those in the United&lt;br /&gt;States. Investments outside the United States may also be subject to different&lt;br /&gt;settlement and accounting practices and different regulatory, legal and&lt;br /&gt;reporting standards, and may be more difficult to value, than those in the&lt;br /&gt;United States. The risks of investing outside the United States may be&lt;br /&gt;heightened in connection with investments in emerging markets.&lt;br /&gt; &lt;br /&gt;Investing in emerging markets - Investing in emerging markets may involve risks&lt;br /&gt;in addition to and greater than those generally associated with investing in&lt;br /&gt;developed countries. For instance, developing countries may have less developed&lt;br /&gt;legal and accounting systems than those in developed countries. The governments&lt;br /&gt;of these countries may be less stable and more likely to impose capital controls, &lt;br /&gt;nationalize a company or industry, place restrictions on foreign ownership and &lt;br /&gt;on withdrawing sale proceeds of securities from the country, and/or impose &lt;br /&gt;punitive taxes that could adversely affect the prices of securities. In addition, &lt;br /&gt;the economies of these countries may be dependent on relatively few industries &lt;br /&gt;that are more susceptible to local and global changes. Securities markets in &lt;br /&gt;these countries can also be relatively small and have substantially lower trading &lt;br /&gt;volumes. As a result, securities issued in these countries may be more volatile &lt;br /&gt;and less liquid, and may be more difficult to value, than securities issued in &lt;br /&gt;countries with more developed economies and/or markets. Additionally, there may &lt;br /&gt;be increased settlement risks for transactions in local securities.&lt;br /&gt; &lt;br /&gt;Investing in mortgage-backed and asset-backed securities - Many types of bonds&lt;br /&gt;and other debt securities, including mortgage-backed/related securities, are&lt;br /&gt;subject to prepayment risk as well as the risks associated with investing in&lt;br /&gt;debt securities in general. If interest rates fall and the loans underlying&lt;br /&gt;these securities are prepaid faster than expected, the underlying fund may have&lt;br /&gt;to reinvest the prepaid principal in lower yielding securities, thus reducing&lt;br /&gt;the fund&apos;s income. Conversely, if interest rates increase and the loans&lt;br /&gt;underlying the securities are prepaid more slowly than expected, the expected&lt;br /&gt;duration of the securities may be extended, reducing the cash flow for potential&lt;br /&gt;reinvestment in higher yielding securities.&lt;br /&gt; &lt;br /&gt;Investing in U.S. government securities - Securities backed by the U.S. Treasury&lt;br /&gt;or the full faith and credit of the U.S. government are guaranteed only as to&lt;br /&gt;the timely payment of interest and principal when held to maturity. Accordingly,&lt;br /&gt;the current market values for these securities will fluctuate with changes in&lt;br /&gt;interest rates. Securities issued by government-sponsored entities and federal&lt;br /&gt;agencies and instrumentalities that are not backed by the full faith and credit&lt;br /&gt;of the U.S. government are neither issued nor guaranteed by the U.S. government.&lt;br /&gt; &lt;br /&gt;Investing in future delivery contracts - Contracts for future delivery of&lt;br /&gt;mortgage-related securities, such as to be announced contracts and mortgage&lt;br /&gt;dollar rolls, involve the fund selling mortgage-related securities and&lt;br /&gt;simultaneously contracting to repurchase similar securities for delivery at a&lt;br /&gt;future date at a predetermined price. This can increase the underlying fund&apos;s&lt;br /&gt;market exposure, and the market price of the securities the fund contracts to&lt;br /&gt;repurchase could drop below their purchase price. While the fund can preserve&lt;br /&gt;and generate capital through the use of such contracts by, for example, realizing &lt;br /&gt;the difference between the sale price and the future purchase price, the income &lt;br /&gt;generated by the fund may be reduced by engaging in such transactions. In addition, &lt;br /&gt;these transactions may increase the turnover rate of the fund.&lt;br /&gt; &lt;br /&gt;Management - The investment adviser to the fund and to the underlying funds&lt;br /&gt;actively manages each underlying fund&apos;s investments. Consequently, the&lt;br /&gt;underlying funds are subject to the risk that the methods and analyses employed&lt;br /&gt;by the investment adviser in this process may not produce the desired results.&lt;br /&gt;This could cause an underlying fund to lose value or its investment results to&lt;br /&gt;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_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1001_4">Fees and expenses of the fund</rr:ExpenseHeading>
  <rr:StrategyHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1001_37">Principal investment strategies</rr:StrategyHeading>
  <rr:PerformanceNarrativeTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1001_44">&lt;tt&gt;Because the fund began investment operations on September 14, 2012, information&lt;br /&gt;regarding investment results is not available as of the date of this prospectus.&lt;/tt&gt;</rr:PerformanceNarrativeTextBlock>
  <rr:ExpenseNarrativeTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_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 a Class 529-A sales charge discount if&lt;br /&gt;you and your family invest, or agree to invest in the future, at least $25,000&lt;br /&gt;in American Funds. More information about these and other discounts is available&lt;br /&gt;from your financial professional and in the "Sales charge reductions and&lt;br /&gt;waivers" section on page 51 of the prospectus and on page 65 of the fund&apos;s&lt;br /&gt;statement of additional information.&lt;/tt&gt;</rr:ExpenseNarrativeTextBlock>
  <rr:AnnualFundOperatingExpensesTableTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1001_49">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/OperatingExpensesData_S000037538Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:AnnualFundOperatingExpensesTableTextBlock>
  <rr:ExpenseExampleNoRedemptionByYearCaption contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1001_30">For the share classes listed below, you would pay the following if you did not redeem your shares:</rr:ExpenseExampleNoRedemptionByYearCaption>
  <rr:RiskNotInsuredDepositoryInstitution contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_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_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1001_48">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/ExpenseExampleNoRedemption_S000037538Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:ExpenseExampleNoRedemptionTableTextBlock>
  <rr:ShareholderFeesTableTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1001_46">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/ShareholderFeesData_S000037538Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:ShareholderFeesTableTextBlock>
  <dei:TradingSymbol contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978310" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1006_0">CNEFX</dei:TradingSymbol>
  <rr:RedemptionFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978310" unitRef="iso4217_USD" decimals="0" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1006_12">0</rr:RedemptionFee>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978310" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1006_9">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:ExpenseExampleYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978310" unitRef="iso4217_USD" decimals="0" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1006_26">85</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978310" unitRef="iso4217_USD" decimals="0" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1006_27">266</rr:ExpenseExampleYear03>
  <rr:FeeWaiverOrReimbursementOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978310" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1006_20">-0.0010</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:ExpenseExampleYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978310" unitRef="iso4217_USD" decimals="0" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1006_29">1014</rr:ExpenseExampleYear10>
  <rr:ExpenseExampleYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978310" unitRef="iso4217_USD" decimals="0" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1006_28">460</rr:ExpenseExampleYear05>
  <rr:OtherExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978310" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1006_17">0.0034</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978310" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1006_15">0.0010</rr:ManagementFeesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978310" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1006_21">2013-12-31</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978310" unitRef="pure" decimals="2" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1006_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978310" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1006_16">0.0000</rr:DistributionAndService12b1FeesOverAssets>
  <rr:NetExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978310" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1006_22">0.0064</rr:NetExpensesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978310" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1006_19">0.0074</rr:ExpensesOverAssets>
  <rr:MaximumAccountFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978310" unitRef="iso4217_USD" decimals="0" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1006_13">10</rr:MaximumAccountFee>
  <rr:AcquiredFundFeesAndExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978310" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1006_18">0.0030</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978310" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1006_10">0.0000</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978311" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1005_0">CNEEX</dei:TradingSymbol>
  <rr:RedemptionFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978311" unitRef="iso4217_USD" decimals="0" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1005_12">0</rr:RedemptionFee>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978311" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1005_9">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:ExpenseExampleYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978311" unitRef="iso4217_USD" decimals="0" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1005_26">130</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978311" unitRef="iso4217_USD" decimals="0" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1005_27">404</rr:ExpenseExampleYear03>
  <rr:FeeWaiverOrReimbursementOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978311" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1005_20">-0.0010</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:ExpenseExampleYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978311" unitRef="iso4217_USD" decimals="0" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1005_29">1525</rr:ExpenseExampleYear10>
  <rr:ExpenseExampleYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978311" unitRef="iso4217_USD" decimals="0" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1005_28">697</rr:ExpenseExampleYear05>
  <rr:OtherExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978311" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1005_17">0.0028</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978311" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1005_15">0.0010</rr:ManagementFeesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978311" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1005_21">2013-12-31</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978311" unitRef="pure" decimals="2" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1005_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978311" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1005_16">0.0050</rr:DistributionAndService12b1FeesOverAssets>
  <rr:NetExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978311" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1005_22">0.0108</rr:NetExpensesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978311" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1005_19">0.0118</rr:ExpensesOverAssets>
  <rr:MaximumAccountFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978311" unitRef="iso4217_USD" decimals="0" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1005_13">10</rr:MaximumAccountFee>
  <rr:AcquiredFundFeesAndExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978311" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1005_18">0.0030</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978311" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1005_10">0.0000</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978312" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1004_0">CNECX</dei:TradingSymbol>
  <rr:RedemptionFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978312" unitRef="iso4217_USD" decimals="0" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1004_12">0</rr:RedemptionFee>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978312" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1004_9">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:ExpenseExampleYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978312" unitRef="iso4217_USD" decimals="0" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1004_26">283</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleNoRedemptionYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978312" unitRef="iso4217_USD" decimals="0" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1004_31">183</rr:ExpenseExampleNoRedemptionYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978312" unitRef="iso4217_USD" decimals="0" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1004_27">568</rr:ExpenseExampleYear03>
  <rr:FeeWaiverOrReimbursementOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978312" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1004_20">-0.0010</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:ExpenseExampleYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978312" unitRef="iso4217_USD" decimals="0" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1004_29">2110</rr:ExpenseExampleYear10>
  <rr:ExpenseExampleYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978312" unitRef="iso4217_USD" decimals="0" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1004_28">976</rr:ExpenseExampleYear05>
  <rr:OtherExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978312" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1004_17">0.0031</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978312" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1004_15">0.0010</rr:ManagementFeesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978312" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1004_21">2013-12-31</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:ExpenseExampleNoRedemptionYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978312" unitRef="iso4217_USD" decimals="0" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1004_34">2110</rr:ExpenseExampleNoRedemptionYear10>
  <rr:ExpenseExampleNoRedemptionYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978312" unitRef="iso4217_USD" decimals="0" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1004_32">568</rr:ExpenseExampleNoRedemptionYear03>
  <rr:ExpenseExampleNoRedemptionYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978312" unitRef="iso4217_USD" decimals="0" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1004_33">976</rr:ExpenseExampleNoRedemptionYear05>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978312" unitRef="pure" decimals="2" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1004_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978312" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1004_16">0.0100</rr:DistributionAndService12b1FeesOverAssets>
  <rr:NetExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978312" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1004_22">0.0161</rr:NetExpensesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978312" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1004_19">0.0171</rr:ExpensesOverAssets>
  <rr:MaximumAccountFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978312" unitRef="iso4217_USD" decimals="0" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1004_13">10</rr:MaximumAccountFee>
  <rr:AcquiredFundFeesAndExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978312" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1004_18">0.0030</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978312" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1004_10">0.0100</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978313" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1003_0">CNEBX</dei:TradingSymbol>
  <rr:RedemptionFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978313" unitRef="iso4217_USD" decimals="0" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1003_12">0</rr:RedemptionFee>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978313" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1003_9">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:ExpenseExampleYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978313" unitRef="iso4217_USD" decimals="0" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1003_26">690</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleNoRedemptionYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978313" unitRef="iso4217_USD" decimals="0" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1003_31">190</rr:ExpenseExampleNoRedemptionYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978313" unitRef="iso4217_USD" decimals="0" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1003_27">986</rr:ExpenseExampleYear03>
  <rr:FeeWaiverOrReimbursementOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978313" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1003_20">-0.0010</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:ExpenseExampleYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978313" unitRef="iso4217_USD" decimals="0" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1003_29">1962</rr:ExpenseExampleYear10>
  <rr:ExpenseExampleYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978313" unitRef="iso4217_USD" decimals="0" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1003_28">1207</rr:ExpenseExampleYear05>
  <rr:OtherExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978313" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1003_17">0.0037</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978313" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1003_15">0.0010</rr:ManagementFeesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978313" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1003_21">2013-12-31</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:ExpenseExampleNoRedemptionYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978313" unitRef="iso4217_USD" decimals="0" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1003_34">1962</rr:ExpenseExampleNoRedemptionYear10>
  <rr:ExpenseExampleNoRedemptionYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978313" unitRef="iso4217_USD" decimals="0" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1003_32">586</rr:ExpenseExampleNoRedemptionYear03>
  <rr:ExpenseExampleNoRedemptionYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978313" unitRef="iso4217_USD" decimals="0" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1003_33">1007</rr:ExpenseExampleNoRedemptionYear05>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978313" unitRef="pure" decimals="2" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1003_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978313" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1003_16">0.0100</rr:DistributionAndService12b1FeesOverAssets>
  <rr:NetExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978313" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1003_22">0.0167</rr:NetExpensesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978313" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1003_19">0.0177</rr:ExpensesOverAssets>
  <rr:MaximumAccountFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978313" unitRef="iso4217_USD" decimals="0" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1003_13">10</rr:MaximumAccountFee>
  <rr:AcquiredFundFeesAndExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978313" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1003_18">0.0030</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978313" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1003_10">0.0500</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978314" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1002_0">CNEAX</dei:TradingSymbol>
  <rr:RedemptionFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978314" unitRef="iso4217_USD" decimals="0" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1002_12">0</rr:RedemptionFee>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978314" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1002_9">0.0425</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:ExpenseExampleYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978314" unitRef="iso4217_USD" decimals="0" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1002_26">529</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978314" unitRef="iso4217_USD" decimals="0" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1002_27">748</rr:ExpenseExampleYear03>
  <rr:FeeWaiverOrReimbursementOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978314" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1002_20">-0.0010</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:ExpenseExampleYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978314" unitRef="iso4217_USD" decimals="0" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1002_29">1648</rr:ExpenseExampleYear10>
  <rr:ExpenseExampleYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978314" unitRef="iso4217_USD" decimals="0" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1002_28">982</rr:ExpenseExampleYear05>
  <rr:OtherExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978314" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1002_17">0.0031</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978314" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1002_15">0.0010</rr:ManagementFeesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978314" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1002_21">2013-12-31</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978314" unitRef="pure" decimals="2" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1002_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978314" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1002_16">0.0025</rr:DistributionAndService12b1FeesOverAssets>
  <rr:NetExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978314" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1002_22">0.0086</rr:NetExpensesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978314" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1002_19">0.0096</rr:ExpensesOverAssets>
  <rr:MaximumAccountFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978314" unitRef="iso4217_USD" decimals="0" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1002_13">10</rr:MaximumAccountFee>
  <rr:AcquiredFundFeesAndExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978314" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1002_18">0.0030</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978294_602238x-9978287_602488x-9978314" unitRef="pure" decimals="4" id="id_716109_A61E4174-DB6B-4003-B583-80D36D8A8D34_1002_10">0.0100</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <rr:PortfolioTurnoverTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1001_36">&lt;tt&gt;The fund may pay transaction costs, such as commissions, when it buys and &lt;br /&gt;sells securities (or "turns over" its portfolio). A higher portfolio turnover &lt;br /&gt;rate may indicate higher transaction costs. 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.&lt;/tt&gt;</rr:PortfolioTurnoverTextBlock>
  <rr:ExpenseExampleWithRedemptionTableTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1001_47">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/ExpenseExample_S000037537Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:ExpenseExampleWithRedemptionTableTextBlock>
  <rr:ObjectivePrimaryTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1001_3">&lt;tt&gt;The fund will seek to achieve the following objectives to varying degrees:&lt;br /&gt;growth, income and preservation of capital, depending on the proximity to its&lt;br /&gt;target date. The target date is meant to roughly correspond to the year in which&lt;br /&gt;the fund beneficiary will start to withdraw funds to meet higher education&lt;br /&gt;expenses. The fund will increasingly emphasize income and preservation of&lt;br /&gt;capital by investing a greater portion of its assets in bond, equity-income and&lt;br /&gt;balanced funds as it approaches and passes its target date. In this way, the&lt;br /&gt;fund seeks to achieve an appropriate balance of total return and stability&lt;br /&gt;during different time periods.&lt;/tt&gt;</rr:ObjectivePrimaryTextBlock>
  <rr:ExpenseExampleNarrativeTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1001_24">&lt;tt&gt;This example is intended to help you compare the cost of investing in the fund &lt;br /&gt;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_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1001_38">&lt;tt&gt;The fund will attempt to achieve its investment objectives by investing in a mix&lt;br /&gt;of American Funds in different combinations and weightings. The underlying&lt;br /&gt;American Funds represent a variety of fund categories such as growth-and-income&lt;br /&gt;funds, equity-income funds, balanced funds and bond funds. The fund categories&lt;br /&gt;represent differing investment objectives. For example, growth-and-income funds&lt;br /&gt;seek long-term growth-and-income primarily through investments in stocks.&lt;br /&gt;Equity-income and balanced funds generally strive for income and growth through&lt;br /&gt;stocks and/or bond investments, while bond funds seek current income through&lt;br /&gt;bond investments.&lt;br /&gt; &lt;br /&gt;The investment adviser may periodically rebalance or modify the asset mix of the&lt;br /&gt;funds and change the underlying fund investments. According to its current&lt;br /&gt;investment approach, the percentage of the fund invested in different categories&lt;br /&gt;will change until the fund reaches its target date. Upon reaching its target&lt;br /&gt;date, the fund will be principally invested in fixed-income funds and may merge&lt;br /&gt;into the Enrollment Fund, which will also be principally invested in&lt;br /&gt;fixed-income funds.&lt;br /&gt; &lt;br /&gt;The fund&apos;s investment adviser periodically reviews the investment strategies and&lt;br /&gt;asset mix of the underlying funds. The investment adviser will also consider&lt;br /&gt;whether overall market conditions would favor a change in the exposure of the&lt;br /&gt;fund to various asset types or geographic regions. Based on these considerations, &lt;br /&gt;the investment adviser may make adjustments to underlying fund holdings by &lt;br /&gt;adjusting the percentage of individual underlying funds within the fund, or &lt;br /&gt;adding or removing underlying funds. The investment adviser may also determine &lt;br /&gt;not to change the underlying fund allocations, particularly in response to &lt;br /&gt;short-term market movements, if in its opinion the combination of underlying &lt;br /&gt;funds is appropriate to meet the fund&apos;s investment objective.&lt;br /&gt; &lt;br /&gt;With respect to its fixed-income investments, the underlying funds in which &lt;br /&gt;the fund invests may hold debt securities with a wide range of quality and &lt;br /&gt;maturities. The fund may invest in underlying funds with significant exposure &lt;br /&gt;to bonds rated BB+ or below and Ba1 or below by Nationally Recognized Statistical &lt;br /&gt;Rating 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." Exposure to lower rated securities may help the fund achieve its&lt;br /&gt;objective of providing current income.&lt;br /&gt; &lt;br /&gt;The underlying funds may hold securities issued and guaranteed by the U.S.&lt;br /&gt;government, securities issued by federal agencies and instrumentalities and&lt;br /&gt;securities backed by mortgages or other assets. The underlying funds may also&lt;br /&gt;invest in the debt securities of governments, agencies, corporations and other&lt;br /&gt;entities domiciled outside the United States.&lt;br /&gt;&amp;#xA0;&amp;#xA0;&lt;br /&gt;The following chart illustrates the current investment approach of the fund by&lt;br /&gt;showing how its investment in the various fund categories will change over time.&lt;br /&gt; &lt;br /&gt;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;Current investment approach&lt;br /&gt;&lt;br /&gt;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;2030&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;2027&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;2024&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;2021&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;2018&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;2015&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;Enrollment&lt;br /&gt;&lt;br /&gt;Growth funds&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;20%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;15%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;10%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&lt;br /&gt;Growth-and-income funds&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;70%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;55%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;45%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;40%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;20%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&lt;br /&gt;Equity-income and balanced funds&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;10%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;10%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;15%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;20%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;10%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&lt;br /&gt;Bond funds&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;10%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;20%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;35%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;45%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;60%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;90%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;100%&lt;br /&gt;&lt;br /&gt;Years to distribution&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;15-18&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;12-15&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;9-12&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;6-9&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;3-6&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0-3&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;target date&lt;br /&gt;&lt;br /&gt;&lt;br /&gt;The investment adviser anticipates that the fund will invest its assets within a&lt;br /&gt;range that deviates no more than 10% above or below the investment approach set&lt;br /&gt;forth above. For example, a 20% target allocation to growth funds is not expected &lt;br /&gt;to be greater than 30% or less than 10%. The investment adviser will continuously &lt;br /&gt;monitor the fund and may make modifications to either the investment approach or &lt;br /&gt;the underlying fund allocations that the investment adviser believes could benefit &lt;br /&gt;shareholders.&lt;/tt&gt;</rr:StrategyNarrativeTextBlock>
  <rr:RiskReturnHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1001_1">American Funds College 2021 FundSM</rr:RiskReturnHeading>
  <rr:ExpenseBreakpointDiscounts contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1001_6">You may qualify for a Class 529-A sales charge discount if you and your family
invest, or agree to invest in the future, at least $25,000 in American Funds.</rr:ExpenseBreakpointDiscounts>
  <rr:ExpenseExampleHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1001_23">Example</rr:ExpenseExampleHeading>
  <rr:PerformanceOneYearOrLess contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1001_45">Because the fund began investment operations on September 14, 2012, information
regarding investment results is not available as of the date of this prospectus.</rr:PerformanceOneYearOrLess>
  <rr:ObjectiveHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1001_2">Investment objectives</rr:ObjectiveHeading>
  <rr:RiskLoseMoney contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1001_41">You may lose money by investing in the fund. </rr:RiskLoseMoney>
  <rr:RiskHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1001_39">Principal risks</rr:RiskHeading>
  <rr:ShareholderFeesCaption contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1001_8">Shareholder fees (fees paid directly from your investment)</rr:ShareholderFeesCaption>
  <rr:ExpenseExampleByYearCaption contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1001_25">Although your actual costs may be higher or lower, based on these assumptions your costs would be:</rr:ExpenseExampleByYearCaption>
  <rr:BarChartAndPerformanceTableHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1001_43">Investment results</rr:BarChartAndPerformanceTableHeading>
  <rr:ExpenseBreakpointMinimumInvestmentRequiredAmount contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288" unitRef="iso4217_USD" decimals="0" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1001_7">25000</rr:ExpenseBreakpointMinimumInvestmentRequiredAmount>
  <rr:OperatingExpensesCaption contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1001_14">Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment) </rr:OperatingExpensesCaption>
  <rr:PortfolioTurnoverHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1001_35">Portfolio turnover</rr:PortfolioTurnoverHeading>
  <rr:RiskNarrativeTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_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;Investors in the fund should have a long-term perspective and be able to&lt;br /&gt;tolerate potentially sharp declines in value.&lt;br /&gt; &lt;br /&gt;Allocation risk - Investments in the fund are subject to risks related to the&lt;br /&gt;investment adviser&apos;s allocation choices. The selection of the underlying funds&lt;br /&gt;and the allocation of the fund&apos;s assets could cause the fund to lose value or&lt;br /&gt;its results to lag relevant benchmarks or other funds with similar objectives.&lt;br /&gt; &lt;br /&gt;Fund structure - The fund invests in underlying funds and incurs expenses&lt;br /&gt;related to the underlying funds. In addition, investors in the fund will incur&lt;br /&gt;fees to pay for certain expenses related to the operations of the fund. An&lt;br /&gt;investor holding the underlying funds directly and in the same proportions as&lt;br /&gt;the fund would incur lower overall expenses but would not receive the benefit &lt;br /&gt;of the portfolio management and other services provided by the fund.&lt;br /&gt; &lt;br /&gt;Because the fund&apos;s investments consist of underlying funds, the fund&apos;s risks are&lt;br /&gt;directly related to the risks of the underlying funds. For this reason, it is&lt;br /&gt;important to understand the risks associated with investing in the underlying&lt;br /&gt;funds.&lt;br /&gt; &lt;br /&gt;Market conditions - The prices of, and the income generated by, the common&lt;br /&gt;stocks, bonds and other securities held by the underlying funds may decline &lt;br /&gt;due to market conditions and other factors, including those directly involving &lt;br /&gt;the issuers of securities held by the underlying funds.&lt;br /&gt; &lt;br /&gt;Investing in stocks - Investing in stocks may involve larger price swings and&lt;br /&gt;greater potential for loss than other types of investments. As a result, the&lt;br /&gt;value of the underlying funds may be subject to sharp, short-term declines in&lt;br /&gt;value. Income provided by an underlying fund may be reduced by changes in the&lt;br /&gt;dividend policies of, and the capital resources available at, the companies in&lt;br /&gt;which the underlying fund invests.&lt;br /&gt; &lt;br /&gt;Investing in growth-oriented stocks - Growth-oriented stocks may involve larger&lt;br /&gt;price swings and greater potential for loss than other types of investments.&lt;br /&gt; &lt;br /&gt;Investing in income-oriented stocks - Income provided by an underlying fund may&lt;br /&gt;be reduced by changes in the dividend policies of, and the capital resources&lt;br /&gt;available at, the companies in which the underlying fund invests.&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&lt;br /&gt;underlying fund 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. Credit risk is gauged, in part, by the&lt;br /&gt;credit ratings of the securities in which the underlying fund invests. However,&lt;br /&gt;ratings are only the opinions of the rating agencies issuing them and are not&lt;br /&gt;guarantees as to credit quality or an evaluation of market risk.&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 bonds rated Ba1 or BB+ or below by&lt;br /&gt;Nationally Recognized Statistical Rating Organizations or unrated but determined&lt;br /&gt;by the underlying fund&apos;s investment adviser to be of equivalent quality. Such&lt;br /&gt;securities are considered speculative and are sometimes referred to as "junk&lt;br /&gt;bonds." The value of the underlying funds may be similarly affected.&lt;br /&gt; &lt;br /&gt;Investing in small companies - Investing in smaller companies may pose&lt;br /&gt;additional risks. For example, it is often more difficult to value or dispose &lt;br /&gt;of small company stocks and more difficult to obtain information about smaller&lt;br /&gt;companies than about larger companies. In addition, the prices of these stocks&lt;br /&gt;may be more volatile than stocks of larger, more established companies.&lt;br /&gt; &lt;br /&gt;Investing outside the United States - Securities of issuers domiciled outside&lt;br /&gt;the United States, or with significant operations outside the United States, may&lt;br /&gt;lose value because of adverse political, social, economic or market developments&lt;br /&gt;in the countries or regions in which the issuer operates. These securities may&lt;br /&gt;also lose value due to changes in foreign currency exchange rates against the&lt;br /&gt;U.S. dollar and/or currencies of other countries. Securities markets in certain&lt;br /&gt;countries may be more volatile and/or less liquid than those in the United&lt;br /&gt;States. Investments outside the United States may also be subject to different&lt;br /&gt;settlement and accounting practices and different regulatory, legal and&lt;br /&gt;reporting standards, and may be more difficult to value, than those in the&lt;br /&gt;United States. The risks of investing outside the United States may be&lt;br /&gt;heightened in connection with investments in emerging markets.&lt;br /&gt; &lt;br /&gt;Investing in emerging markets - Investing in emerging markets may involve risks&lt;br /&gt;in addition to and greater than those generally associated with investing in&lt;br /&gt;developed countries. For instance, developing countries may have less developed&lt;br /&gt;legal and accounting systems than those in developed countries. The governments&lt;br /&gt;of these countries may be less stable and more likely to impose capital controls, &lt;br /&gt;nationalize a company or industry, place restrictions on foreign ownership and &lt;br /&gt;on withdrawing sale proceeds of securities from the country, and/or impose &lt;br /&gt;punitive taxes that could adversely affect the prices of securities. In addition, &lt;br /&gt;the economies of these countries may be dependent on relatively few industries &lt;br /&gt;that are more susceptible to local and global changes. Securities markets in &lt;br /&gt;these countries can also be relatively small and have substantially lower trading &lt;br /&gt;volumes. As a result, securities issued in these countries may be more volatile &lt;br /&gt;and less liquid, and may be more difficult to value, than securities issued in &lt;br /&gt;countries with more developed economies and/or markets. Additionally, there may &lt;br /&gt;be increased settlement risks for transactions in local securities.&lt;br /&gt; &lt;br /&gt;Investing in mortgage-backed and asset-backed securities - Many types of bonds&lt;br /&gt;and other debt securities, including mortgage-backed/related securities, are&lt;br /&gt;subject to prepayment risk as well as the risks associated with investing in&lt;br /&gt;debt securities in general. If interest rates fall and the loans underlying&lt;br /&gt;these securities are prepaid faster than expected, the underlying fund may have&lt;br /&gt;to reinvest the prepaid principal in lower yielding securities, thus reducing&lt;br /&gt;the fund&apos;s income. Conversely, if interest rates increase and the loans&lt;br /&gt;underlying the securities are prepaid more slowly than expected, the expected&lt;br /&gt;duration of the securities may be extended, reducing the cash flow for potential&lt;br /&gt;reinvestment in higher yielding securities.&lt;br /&gt; &lt;br /&gt;Investing in U.S. government securities - Securities backed by the U.S. Treasury&lt;br /&gt;or the full faith and credit of the U.S. government are guaranteed only as to&lt;br /&gt;the timely payment of interest and principal when held to maturity. Accordingly,&lt;br /&gt;the current market values for these securities will fluctuate with changes in&lt;br /&gt;interest rates. Securities issued by government-sponsored entities and federal&lt;br /&gt;agencies and instrumentalities that are not backed by the full faith and credit&lt;br /&gt;of the U.S. government are neither issued nor guaranteed by the U.S. government.&lt;br /&gt; &lt;br /&gt;Investing in future delivery contracts - Contracts for future delivery of&lt;br /&gt;mortgage-related securities, such as to be announced contracts and mortgage&lt;br /&gt;dollar rolls, involve the fund selling mortgage-related securities and&lt;br /&gt;simultaneously contracting to repurchase similar securities for delivery at a&lt;br /&gt;future date at a predetermined price. This can increase the underlying fund&apos;s&lt;br /&gt;market exposure, and the market price of the securities the fund contracts to&lt;br /&gt;repurchase could drop below their purchase price. While the fund can preserve&lt;br /&gt;and generate capital through the use of such contracts by, for example,&lt;br /&gt;realizing the difference between the sale price and the future purchase price,&lt;br /&gt;the income generated by the fund may be reduced by engaging in such transactions. &lt;br /&gt;In addition, these transactions may increase the turnover rate of the fund.&lt;br /&gt; &lt;br /&gt;Management - The investment adviser to the fund and to the underlying funds&lt;br /&gt;actively manages each underlying fund&apos;s investments. Consequently, the underlying &lt;br /&gt;funds are subject to the risk that the methods and analyses employed by the &lt;br /&gt;investment adviser in this process may not produce the desired results. This &lt;br /&gt;could cause an underlying fund to lose value or its investment results to lag &lt;br /&gt;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_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1001_4">Fees and expenses of the fund</rr:ExpenseHeading>
  <rr:StrategyHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1001_37">Principal investment strategies</rr:StrategyHeading>
  <rr:PerformanceNarrativeTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1001_44">&lt;tt&gt;Because the fund began investment operations on September 14, 2012, information&lt;br /&gt;regarding investment results is not available as of the date of this prospectus.&lt;/tt&gt;</rr:PerformanceNarrativeTextBlock>
  <rr:ExpenseNarrativeTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_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 a Class 529-A sales charge discount if&lt;br /&gt;you and your family invest, or agree to invest in the future, at least $25,000&lt;br /&gt;in American Funds. More information about these and other discounts is available&lt;br /&gt;from your financial professional and in the "Sales charge reductions and&lt;br /&gt;waivers" section on page 51 of the prospectus and on page 65 of the fund&apos;s&lt;br /&gt;statement of additional information.&lt;/tt&gt;</rr:ExpenseNarrativeTextBlock>
  <rr:AnnualFundOperatingExpensesTableTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1001_49">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/OperatingExpensesData_S000037537Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:AnnualFundOperatingExpensesTableTextBlock>
  <rr:ExpenseExampleNoRedemptionByYearCaption contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1001_30">For the share classes listed below, you would pay the following if you did not redeem your shares:</rr:ExpenseExampleNoRedemptionByYearCaption>
  <rr:RiskNotInsuredDepositoryInstitution contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_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_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1001_48">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/ExpenseExampleNoRedemption_S000037537Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:ExpenseExampleNoRedemptionTableTextBlock>
  <rr:ShareholderFeesTableTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1001_46">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/ShareholderFeesData_S000037537Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:ShareholderFeesTableTextBlock>
  <dei:TradingSymbol contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978315" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1006_0">CTOFX</dei:TradingSymbol>
  <rr:RedemptionFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978315" unitRef="iso4217_USD" decimals="0" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1006_12">0</rr:RedemptionFee>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978315" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1006_9">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:ExpenseExampleYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978315" unitRef="iso4217_USD" decimals="0" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1006_26">92</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978315" unitRef="iso4217_USD" decimals="0" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1006_27">288</rr:ExpenseExampleYear03>
  <rr:FeeWaiverOrReimbursementOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978315" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1006_20">-0.0010</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:ExpenseExampleYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978315" unitRef="iso4217_USD" decimals="0" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1006_29">1097</rr:ExpenseExampleYear10>
  <rr:ExpenseExampleYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978315" unitRef="iso4217_USD" decimals="0" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1006_28">498</rr:ExpenseExampleYear05>
  <rr:OtherExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978315" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1006_17">0.0033</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978315" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1006_15">0.0010</rr:ManagementFeesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978315" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1006_21">2013-12-31</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978315" unitRef="pure" decimals="2" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1006_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978315" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1006_16">0.0000</rr:DistributionAndService12b1FeesOverAssets>
  <rr:NetExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978315" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1006_22">0.0071</rr:NetExpensesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978315" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1006_19">0.0081</rr:ExpensesOverAssets>
  <rr:MaximumAccountFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978315" unitRef="iso4217_USD" decimals="0" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1006_13">10</rr:MaximumAccountFee>
  <rr:AcquiredFundFeesAndExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978315" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1006_18">0.0038</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978315" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1006_10">0.0000</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978316" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1005_0">CTOEX</dei:TradingSymbol>
  <rr:RedemptionFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978316" unitRef="iso4217_USD" decimals="0" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1005_12">0</rr:RedemptionFee>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978316" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1005_9">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:ExpenseExampleYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978316" unitRef="iso4217_USD" decimals="0" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1005_26">137</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978316" unitRef="iso4217_USD" decimals="0" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1005_27">426</rr:ExpenseExampleYear03>
  <rr:FeeWaiverOrReimbursementOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978316" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1005_20">-0.0010</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:ExpenseExampleYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978316" unitRef="iso4217_USD" decimals="0" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1005_29">1604</rr:ExpenseExampleYear10>
  <rr:ExpenseExampleYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978316" unitRef="iso4217_USD" decimals="0" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1005_28">734</rr:ExpenseExampleYear05>
  <rr:OtherExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978316" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1005_17">0.0027</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978316" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1005_15">0.0010</rr:ManagementFeesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978316" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1005_21">2013-12-31</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978316" unitRef="pure" decimals="2" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1005_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978316" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1005_16">0.0050</rr:DistributionAndService12b1FeesOverAssets>
  <rr:NetExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978316" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1005_22">0.0115</rr:NetExpensesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978316" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1005_19">0.0125</rr:ExpensesOverAssets>
  <rr:MaximumAccountFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978316" unitRef="iso4217_USD" decimals="0" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1005_13">10</rr:MaximumAccountFee>
  <rr:AcquiredFundFeesAndExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978316" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1005_18">0.0038</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978316" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1005_10">0.0000</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978317" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1004_0">CTOCX</dei:TradingSymbol>
  <rr:RedemptionFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978317" unitRef="iso4217_USD" decimals="0" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1004_12">0</rr:RedemptionFee>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978317" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1004_9">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:ExpenseExampleYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978317" unitRef="iso4217_USD" decimals="0" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1004_26">291</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleNoRedemptionYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978317" unitRef="iso4217_USD" decimals="0" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1004_31">191</rr:ExpenseExampleNoRedemptionYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978317" unitRef="iso4217_USD" decimals="0" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1004_27">589</rr:ExpenseExampleYear03>
  <rr:FeeWaiverOrReimbursementOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978317" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1004_20">-0.0010</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:ExpenseExampleYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978317" unitRef="iso4217_USD" decimals="0" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1004_29">2184</rr:ExpenseExampleYear10>
  <rr:ExpenseExampleYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978317" unitRef="iso4217_USD" decimals="0" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1004_28">1012</rr:ExpenseExampleYear05>
  <rr:OtherExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978317" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1004_17">0.0030</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978317" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1004_15">0.0010</rr:ManagementFeesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978317" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1004_21">2013-12-31</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:ExpenseExampleNoRedemptionYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978317" unitRef="iso4217_USD" decimals="0" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1004_34">2184</rr:ExpenseExampleNoRedemptionYear10>
  <rr:ExpenseExampleNoRedemptionYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978317" unitRef="iso4217_USD" decimals="0" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1004_32">589</rr:ExpenseExampleNoRedemptionYear03>
  <rr:ExpenseExampleNoRedemptionYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978317" unitRef="iso4217_USD" decimals="0" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1004_33">1012</rr:ExpenseExampleNoRedemptionYear05>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978317" unitRef="pure" decimals="2" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1004_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978317" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1004_16">0.0100</rr:DistributionAndService12b1FeesOverAssets>
  <rr:NetExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978317" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1004_22">0.0168</rr:NetExpensesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978317" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1004_19">0.0178</rr:ExpensesOverAssets>
  <rr:MaximumAccountFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978317" unitRef="iso4217_USD" decimals="0" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1004_13">10</rr:MaximumAccountFee>
  <rr:AcquiredFundFeesAndExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978317" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1004_18">0.0038</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978317" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1004_10">0.0100</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978318" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1003_0">CTOBX</dei:TradingSymbol>
  <rr:RedemptionFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978318" unitRef="iso4217_USD" decimals="0" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1003_12">0</rr:RedemptionFee>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978318" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1003_9">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:ExpenseExampleYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978318" unitRef="iso4217_USD" decimals="0" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1003_26">697</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleNoRedemptionYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978318" unitRef="iso4217_USD" decimals="0" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1003_31">197</rr:ExpenseExampleNoRedemptionYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978318" unitRef="iso4217_USD" decimals="0" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1003_27">1008</rr:ExpenseExampleYear03>
  <rr:FeeWaiverOrReimbursementOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978318" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1003_20">-0.0010</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:ExpenseExampleYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978318" unitRef="iso4217_USD" decimals="0" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1003_29">2038</rr:ExpenseExampleYear10>
  <rr:ExpenseExampleYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978318" unitRef="iso4217_USD" decimals="0" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1003_28">1243</rr:ExpenseExampleYear05>
  <rr:OtherExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978318" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1003_17">0.0036</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978318" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1003_15">0.0010</rr:ManagementFeesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978318" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1003_21">2013-12-31</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:ExpenseExampleNoRedemptionYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978318" unitRef="iso4217_USD" decimals="0" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1003_34">2038</rr:ExpenseExampleNoRedemptionYear10>
  <rr:ExpenseExampleNoRedemptionYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978318" unitRef="iso4217_USD" decimals="0" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1003_32">608</rr:ExpenseExampleNoRedemptionYear03>
  <rr:ExpenseExampleNoRedemptionYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978318" unitRef="iso4217_USD" decimals="0" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1003_33">1043</rr:ExpenseExampleNoRedemptionYear05>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978318" unitRef="pure" decimals="2" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1003_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978318" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1003_16">0.0100</rr:DistributionAndService12b1FeesOverAssets>
  <rr:NetExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978318" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1003_22">0.0174</rr:NetExpensesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978318" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1003_19">0.0184</rr:ExpensesOverAssets>
  <rr:MaximumAccountFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978318" unitRef="iso4217_USD" decimals="0" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1003_13">10</rr:MaximumAccountFee>
  <rr:AcquiredFundFeesAndExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978318" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1003_18">0.0038</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978318" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1003_10">0.0500</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978319" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1002_0">CTOAX</dei:TradingSymbol>
  <rr:RedemptionFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978319" unitRef="iso4217_USD" decimals="0" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1002_12">0</rr:RedemptionFee>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978319" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1002_9">0.0425</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:ExpenseExampleYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978319" unitRef="iso4217_USD" decimals="0" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1002_26">536</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978319" unitRef="iso4217_USD" decimals="0" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1002_27">769</rr:ExpenseExampleYear03>
  <rr:FeeWaiverOrReimbursementOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978319" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1002_20">-0.0010</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:ExpenseExampleYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978319" unitRef="iso4217_USD" decimals="0" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1002_29">1725</rr:ExpenseExampleYear10>
  <rr:ExpenseExampleYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978319" unitRef="iso4217_USD" decimals="0" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1002_28">1018</rr:ExpenseExampleYear05>
  <rr:OtherExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978319" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1002_17">0.0030</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978319" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1002_15">0.0010</rr:ManagementFeesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978319" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1002_21">2013-12-31</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978319" unitRef="pure" decimals="2" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1002_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978319" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1002_16">0.0025</rr:DistributionAndService12b1FeesOverAssets>
  <rr:NetExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978319" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1002_22">0.0093</rr:NetExpensesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978319" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1002_19">0.0103</rr:ExpensesOverAssets>
  <rr:MaximumAccountFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978319" unitRef="iso4217_USD" decimals="0" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1002_13">10</rr:MaximumAccountFee>
  <rr:AcquiredFundFeesAndExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978319" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1002_18">0.0038</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978295_602238x-9978288_602488x-9978319" unitRef="pure" decimals="4" id="id_716109_81E74993-2B77-4E78-A55C-5E247E30BAA1_1002_10">0.0100</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <rr:PortfolioTurnoverTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1001_36">&lt;tt&gt;The fund may pay transaction costs, such as commissions, when it buys and &lt;br /&gt;sells securities (or "turns over" its portfolio). A higher portfolio turnover &lt;br /&gt;rate may indicate higher transaction costs. 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.&lt;/tt&gt;</rr:PortfolioTurnoverTextBlock>
  <rr:ExpenseExampleWithRedemptionTableTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1001_47">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/ExpenseExample_S000037536Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:ExpenseExampleWithRedemptionTableTextBlock>
  <rr:ObjectivePrimaryTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1001_3">&lt;tt&gt;The fund will seek to achieve the following objectives to varying degrees:&lt;br /&gt;growth, income and preservation of capital, depending on the proximity to its&lt;br /&gt;target date. The target date is meant to roughly correspond to the year in which&lt;br /&gt;the fund beneficiary will start to withdraw funds to meet higher education&lt;br /&gt;expenses. The fund will increasingly emphasize income and preservation of&lt;br /&gt;capital by investing a greater portion of its assets in bond, equity-income and&lt;br /&gt;balanced funds as it approaches and passes its target date. In this way, the&lt;br /&gt;fund seeks to achieve an appropriate balance of total return and stability&lt;br /&gt;during different time periods.&lt;/tt&gt;</rr:ObjectivePrimaryTextBlock>
  <rr:ExpenseExampleNarrativeTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1001_24">&lt;tt&gt;This example is intended to help you compare the cost of investing in the fund &lt;br /&gt;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_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1001_38">&lt;tt&gt;The fund will attempt to achieve its investment objectives by investing in a &lt;br /&gt;mix of American Funds in different combinations and weightings. The underlying&lt;br /&gt;American Funds represent a variety of fund categories such as growth funds,&lt;br /&gt;growth-and-income funds, equity-income funds, balanced funds and bond funds. &lt;br /&gt;The fund categories represent differing investment objectives. For example, &lt;br /&gt;growth funds seek long-term growth primarily through investing in both U.S. &lt;br /&gt;stocks and stocks of issuers domiciled outside the U.S. Growth-and-income &lt;br /&gt;funds seek long-term growth-and-income primarily through investments in stocks.&lt;br /&gt;Equity-income and balanced funds generally strive for income and growth through&lt;br /&gt;stocks and/or bond investments, while bond funds seek current income through&lt;br /&gt;bond investments.&lt;br /&gt; &lt;br /&gt;The investment adviser may periodically rebalance or modify the asset mix of &lt;br /&gt;the funds and change the underlying fund investments. According to its current&lt;br /&gt;investment approach, the percentage of the fund invested in different categories&lt;br /&gt;will change until the fund reaches its target date. Upon reaching its target&lt;br /&gt;date, the fund will be principally invested in fixed-income funds and may merge&lt;br /&gt;into the Enrollment Fund, which will also be principally invested in&lt;br /&gt;fixed-income funds.&lt;br /&gt; &lt;br /&gt;The fund&apos;s investment adviser periodically reviews the investment strategies and&lt;br /&gt;asset mix of the underlying funds. The investment adviser will also consider&lt;br /&gt;whether overall market conditions would favor a change in the exposure of the&lt;br /&gt;fund to various asset types or geographic regions. Based on these considerations, &lt;br /&gt;the investment adviser may make adjustments to underlying fund holdings by &lt;br /&gt;adjusting the percentage of individual underlying funds within the fund, or &lt;br /&gt;adding or removing underlying funds. The investment adviser may also determine &lt;br /&gt;not to change the underlying fund allocations, particularly in response to &lt;br /&gt;short-term market movements, if in its opinion the combination of underlying &lt;br /&gt;funds is appropriate to meet the fund&apos;s investment objective.&lt;br /&gt; &lt;br /&gt;With respect to its fixed-income investments, the underlying funds in which &lt;br /&gt;the fund invests may hold debt securities with a wide range of quality and &lt;br /&gt;maturities. The fund may invest in underlying funds with significant exposure &lt;br /&gt;to bonds 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, &lt;br /&gt;or unrated but determined by the fund&apos;s investment adviser to be of equivalent &lt;br /&gt;quality. Securities rated BB+ or below and Ba1 or below are sometimes referred &lt;br /&gt;to as "junk bonds." Exposure to lower rated securities may help the fund achieve &lt;br /&gt;its objective of providing current income.&lt;br /&gt; &lt;br /&gt;The underlying funds may hold securities issued and guaranteed by the U.S.&lt;br /&gt;government, securities issued by federal agencies and instrumentalities and&lt;br /&gt;securities backed by mortgages or other assets. The underlying funds may also&lt;br /&gt;invest in the debt securities of governments, agencies, corporations and other&lt;br /&gt;entities domiciled outside the United States.&lt;br /&gt;&amp;#xA0;&amp;#xA0;&lt;br /&gt;The following chart illustrates the current investment approach of the fund by&lt;br /&gt;showing how its investment in the various fund categories will change over time.&lt;br /&gt; &lt;br /&gt;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;Current investment approach &lt;br /&gt;&lt;br /&gt;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;2030&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;2027&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;2024&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;2021&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;2018&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;2015&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;Enrollment&lt;br /&gt;&lt;br /&gt;Growth funds&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;20%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;15%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;10%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&lt;br /&gt;Growth-and-income funds&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;70%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;55%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;45%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;40%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;20%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&lt;br /&gt;Equity-income and balanced funds&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;10%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;10%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;15%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;20%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;10%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&lt;br /&gt;Bond funds&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;10%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;20%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;35%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;45%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;60%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;90%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;100%&lt;br /&gt;&lt;br /&gt;Years to distribution&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;15-18&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;12-15&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;9-12&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;6-9&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;3-6&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0-3&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;target date&lt;br /&gt;&lt;br /&gt;&lt;br /&gt;The investment adviser anticipates that the fund will invest its assets within a&lt;br /&gt;range that deviates no more than 10% above or below the investment approach set&lt;br /&gt;forth above. For example, a 20% target allocation to growth funds is not&lt;br /&gt;expected to be greater than 30% or less than 10%. The investment adviser will&lt;br /&gt;continuously monitor the fund and may make modifications to either the&lt;br /&gt;investment approach or the underlying fund allocations that the investment&lt;br /&gt;adviser believes could benefit shareholders.&lt;/tt&gt;</rr:StrategyNarrativeTextBlock>
  <rr:RiskReturnHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1001_1">American Funds College 2024 FundSM</rr:RiskReturnHeading>
  <rr:ExpenseBreakpointDiscounts contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1001_6">You may qualify for a Class 529-A sales charge discount if you and your family
invest, or agree to invest in the future, at least $25,000 in American Funds.</rr:ExpenseBreakpointDiscounts>
  <rr:ExpenseExampleHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1001_23">Example</rr:ExpenseExampleHeading>
  <rr:PerformanceOneYearOrLess contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1001_45">Because the fund began investment operations on September 14, 2012, information
regarding investment results is not available as of the date of this prospectus.</rr:PerformanceOneYearOrLess>
  <rr:ObjectiveHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1001_2">Investment objectives</rr:ObjectiveHeading>
  <rr:RiskLoseMoney contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1001_41">You may lose money by investing in the fund. </rr:RiskLoseMoney>
  <rr:RiskHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1001_39">Principal risks</rr:RiskHeading>
  <rr:ShareholderFeesCaption contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1001_8">Shareholder fees (fees paid directly from your investment)</rr:ShareholderFeesCaption>
  <rr:ExpenseExampleByYearCaption contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1001_25">Although your actual costs may be higher or lower, based on these assumptions your costs would be:</rr:ExpenseExampleByYearCaption>
  <rr:BarChartAndPerformanceTableHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1001_43">Investment results</rr:BarChartAndPerformanceTableHeading>
  <rr:ExpenseBreakpointMinimumInvestmentRequiredAmount contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289" unitRef="iso4217_USD" decimals="0" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1001_7">25000</rr:ExpenseBreakpointMinimumInvestmentRequiredAmount>
  <rr:OperatingExpensesCaption contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1001_14">Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)</rr:OperatingExpensesCaption>
  <rr:PortfolioTurnoverHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1001_35">Portfolio turnover</rr:PortfolioTurnoverHeading>
  <rr:RiskNarrativeTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_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;Investors in the fund should have a long-term perspective and be able to&lt;br /&gt;tolerate potentially sharp declines in value.&lt;br /&gt; &lt;br /&gt;Allocation risk - Investments in the fund are subject to risks related to the&lt;br /&gt;investment adviser&apos;s allocation choices. The selection of the underlying funds&lt;br /&gt;and the allocation of the fund&apos;s assets could cause the fund to lose value or&lt;br /&gt;its results to lag relevant benchmarks or other funds with similar objectives.&lt;br /&gt; &lt;br /&gt;Fund structure - The fund invests in underlying funds and incurs expenses&lt;br /&gt;related to the underlying funds. In addition, investors in the fund will incur&lt;br /&gt;fees to pay for certain expenses related to the operations of the fund. An&lt;br /&gt;investor holding the underlying funds directly and in the same proportions as&lt;br /&gt;the fund would incur lower overall expenses but would not receive the benefit &lt;br /&gt;of the portfolio management and other services provided by the fund.&lt;br /&gt; &lt;br /&gt;Because the fund&apos;s investments consist of underlying funds, the fund&apos;s risks are&lt;br /&gt;directly related to the risks of the underlying funds. For this reason, it is&lt;br /&gt;important to understand the risks associated with investing in the underlying&lt;br /&gt;funds.&lt;br /&gt; &lt;br /&gt;Market conditions - The prices of, and the income generated by, the common&lt;br /&gt;stocks, bonds and other securities held by the underlying funds may decline due&lt;br /&gt;to market conditions and other factors, including those directly involving the&lt;br /&gt;issuers of securities held by the underlying funds.&lt;br /&gt; &lt;br /&gt;Investing in stocks - Investing in stocks may involve larger price swings and&lt;br /&gt;greater potential for loss than other types of investments. As a result, the&lt;br /&gt;value of the underlying funds may be subject to sharp, short-term declines in&lt;br /&gt;value. Income provided by an underlying fund may be reduced by changes in the&lt;br /&gt;dividend policies of, and the capital resources available at, the companies in&lt;br /&gt;which the underlying fund invests.&lt;br /&gt; &lt;br /&gt;Investing in growth-oriented stocks - Growth-oriented stocks may involve larger&lt;br /&gt;price swings and greater potential for loss than other types of investments.&lt;br /&gt; &lt;br /&gt;Investing in income-oriented stocks - Income provided by an underlying fund may&lt;br /&gt;be reduced by changes in the dividend policies of, and the capital resources&lt;br /&gt;available at, the companies in which the underlying fund invests.&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&lt;br /&gt;underlying fund 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. Credit risk is gauged, in part, by the&lt;br /&gt;credit ratings of the securities in which the underlying fund invests. However,&lt;br /&gt;ratings are only the opinions of the rating agencies issuing them and are not&lt;br /&gt;guarantees as to credit quality or an evaluation of market risk.&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 bonds rated Ba1 or BB+ or below by&lt;br /&gt;Nationally Recognized Statistical Rating Organizations or unrated but determined&lt;br /&gt;by the underlying fund&apos;s investment adviser to be of equivalent quality. Such&lt;br /&gt;securities are considered speculative and are sometimes referred to as "junk&lt;br /&gt;bonds." The value of the underlying funds may be similarly affected.&lt;br /&gt; &lt;br /&gt;Investing in small companies - Investing in smaller companies may pose&lt;br /&gt;additional risks. For example, it is often more difficult to value or dispose &lt;br /&gt;of small company stocks and more difficult to obtain information about smaller&lt;br /&gt;companies than about larger companies. In addition, the prices of these stocks&lt;br /&gt;may be more volatile than stocks of larger, more established companies.&lt;br /&gt; &lt;br /&gt;Investing outside the United States - Securities of issuers domiciled outside&lt;br /&gt;the United States, or with significant operations outside the United States, may&lt;br /&gt;lose value because of adverse political, social, economic or market developments&lt;br /&gt;in the countries or regions in which the issuer operates. These securities may&lt;br /&gt;also lose value due to changes in foreign currency exchange rates against the&lt;br /&gt;U.S. dollar and/or currencies of other countries. Securities markets in certain&lt;br /&gt;countries may be more volatile and/or less liquid than those in the United&lt;br /&gt;States. Investments outside the United States may also be subject to different&lt;br /&gt;settlement and accounting practices and different regulatory, legal and&lt;br /&gt;reporting standards, and may be more difficult to value, than those in the&lt;br /&gt;United States. The risks of investing outside the United States may be&lt;br /&gt;heightened in connection with investments in emerging markets.&lt;br /&gt; &lt;br /&gt;Investing in emerging markets - Investing in emerging markets may involve risks&lt;br /&gt;in addition to and greater than those generally associated with investing in&lt;br /&gt;developed countries. For instance, developing countries may have less developed&lt;br /&gt;legal and accounting systems than those in developed countries. The governments&lt;br /&gt;of these countries may be less stable and more likely to impose capital controls, &lt;br /&gt;nationalize a company or industry, place restrictions on foreign ownership and &lt;br /&gt;on withdrawing sale proceeds of securities from the country, and/or impose &lt;br /&gt;punitive taxes that could adversely affect the prices of securities. In addition, &lt;br /&gt;the economies of these countries may be dependent on relatively few industries &lt;br /&gt;that are more susceptible to local and global changes. Securities markets in &lt;br /&gt;these countries can also be relatively small and have substantially lower trading &lt;br /&gt;volumes. As a result, securities issued in these countries may be more volatile &lt;br /&gt;and less liquid, and may be more difficult to value, than securities issued in &lt;br /&gt;countries with more developed economies and/or markets. Additionally, there may &lt;br /&gt;be increased settlement risks for transactions in local securities.&lt;br /&gt; &lt;br /&gt;Investing in mortgage-backed and asset-backed securities - Many types of bonds&lt;br /&gt;and other debt securities, including mortgage-backed/related securities, are&lt;br /&gt;subject to prepayment risk as well as the risks associated with investing in&lt;br /&gt;debt securities in general. If interest rates fall and the loans underlying&lt;br /&gt;these securities are prepaid faster than expected, the underlying fund may have&lt;br /&gt;to reinvest the prepaid principal in lower yielding securities, thus reducing&lt;br /&gt;the fund&apos;s income. Conversely, if interest rates increase and the loans&lt;br /&gt;underlying the securities are prepaid more slowly than expected, the expected&lt;br /&gt;duration of the securities may be extended, reducing the cash flow for potential&lt;br /&gt;reinvestment in higher yielding securities.&lt;br /&gt; &lt;br /&gt;Investing in U.S. government securities - Securities backed by the U.S. Treasury&lt;br /&gt;or the full faith and credit of the U.S. government are guaranteed only as to&lt;br /&gt;the timely payment of interest and principal when held to maturity. Accordingly,&lt;br /&gt;the current market values for these securities will fluctuate with changes in&lt;br /&gt;interest rates. Securities issued by government-sponsored entities and federal&lt;br /&gt;agencies and instrumentalities that are not backed by the full faith and credit&lt;br /&gt;of the U.S. government are neither issued nor guaranteed by the U.S. government.&lt;br /&gt; &lt;br /&gt;Management - The investment adviser to the fund and to the underlying funds&lt;br /&gt;actively manages each underlying fund&apos;s investments. Consequently, the&lt;br /&gt;underlying funds are subject to the risk that the methods and analyses employed&lt;br /&gt;by the investment adviser in this process may not produce the desired results.&lt;br /&gt;This could cause an underlying fund to lose value or its investment results to&lt;br /&gt;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_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1001_4">Fees and expenses of the fund</rr:ExpenseHeading>
  <rr:StrategyHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1001_37">Principal investment strategies</rr:StrategyHeading>
  <rr:PerformanceNarrativeTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1001_44">&lt;tt&gt;Because the fund began investment operations on September 14, 2012, information&lt;br /&gt;regarding investment results is not available as of the date of this prospectus.&lt;/tt&gt;</rr:PerformanceNarrativeTextBlock>
  <rr:ExpenseNarrativeTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_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 a Class 529-A sales charge discount if&lt;br /&gt;you and your family invest, or agree to invest in the future, at least $25,000&lt;br /&gt;in American Funds. More information about these and other discounts is available&lt;br /&gt;from your financial professional and in the "Sales charge reductions and waivers" &lt;br /&gt;section on page 51 of the prospectus and on page 65 of the fund&apos;s statement of &lt;br /&gt;additional information.&lt;/tt&gt;</rr:ExpenseNarrativeTextBlock>
  <rr:AnnualFundOperatingExpensesTableTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1001_49">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/OperatingExpensesData_S000037536Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:AnnualFundOperatingExpensesTableTextBlock>
  <rr:ExpenseExampleNoRedemptionByYearCaption contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1001_30">For the share classes listed below, you would pay the following if you did not redeem your shares:</rr:ExpenseExampleNoRedemptionByYearCaption>
  <rr:RiskNotInsuredDepositoryInstitution contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_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_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1001_48">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/ExpenseExampleNoRedemption_S000037536Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:ExpenseExampleNoRedemptionTableTextBlock>
  <rr:ShareholderFeesTableTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1001_46">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/ShareholderFeesData_S000037536Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:ShareholderFeesTableTextBlock>
  <dei:TradingSymbol contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978320" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1006_0">CTFFX</dei:TradingSymbol>
  <rr:RedemptionFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978320" unitRef="iso4217_USD" decimals="0" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1006_12">0</rr:RedemptionFee>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978320" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1006_9">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:ExpenseExampleYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978320" unitRef="iso4217_USD" decimals="0" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1006_26">93</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978320" unitRef="iso4217_USD" decimals="0" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1006_27">291</rr:ExpenseExampleYear03>
  <rr:FeeWaiverOrReimbursementOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978320" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1006_20">-0.0010</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:ExpenseExampleYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978320" unitRef="iso4217_USD" decimals="0" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1006_29">1109</rr:ExpenseExampleYear10>
  <rr:ExpenseExampleYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978320" unitRef="iso4217_USD" decimals="0" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1006_28">504</rr:ExpenseExampleYear05>
  <rr:OtherExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978320" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1006_17">0.0034</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978320" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1006_15">0.0010</rr:ManagementFeesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978320" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1006_21">2013-12-31</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978320" unitRef="pure" decimals="2" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1006_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978320" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1006_16">0.0000</rr:DistributionAndService12b1FeesOverAssets>
  <rr:NetExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978320" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1006_22">0.0072</rr:NetExpensesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978320" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1006_19">0.0082</rr:ExpensesOverAssets>
  <rr:MaximumAccountFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978320" unitRef="iso4217_USD" decimals="0" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1006_13">10</rr:MaximumAccountFee>
  <rr:AcquiredFundFeesAndExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978320" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1006_18">0.0038</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978320" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1006_10">0.0000</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978321" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1005_0">CTFEX</dei:TradingSymbol>
  <rr:RedemptionFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978321" unitRef="iso4217_USD" decimals="0" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1005_12">0</rr:RedemptionFee>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978321" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1005_9">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:ExpenseExampleYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978321" unitRef="iso4217_USD" decimals="0" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1005_26">138</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978321" unitRef="iso4217_USD" decimals="0" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1005_27">429</rr:ExpenseExampleYear03>
  <rr:FeeWaiverOrReimbursementOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978321" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1005_20">-0.0010</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:ExpenseExampleYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978321" unitRef="iso4217_USD" decimals="0" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1005_29">1615</rr:ExpenseExampleYear10>
  <rr:ExpenseExampleYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978321" unitRef="iso4217_USD" decimals="0" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1005_28">740</rr:ExpenseExampleYear05>
  <rr:OtherExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978321" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1005_17">0.0028</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978321" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1005_15">0.0010</rr:ManagementFeesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978321" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1005_21">2013-12-31</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978321" unitRef="pure" decimals="2" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1005_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978321" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1005_16">0.0050</rr:DistributionAndService12b1FeesOverAssets>
  <rr:NetExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978321" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1005_22">0.0116</rr:NetExpensesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978321" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1005_19">0.0126</rr:ExpensesOverAssets>
  <rr:MaximumAccountFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978321" unitRef="iso4217_USD" decimals="0" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1005_13">10</rr:MaximumAccountFee>
  <rr:AcquiredFundFeesAndExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978321" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1005_18">0.0038</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978321" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1005_10">0.0000</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978322" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1004_0">CTFCX</dei:TradingSymbol>
  <rr:RedemptionFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978322" unitRef="iso4217_USD" decimals="0" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1004_12">0</rr:RedemptionFee>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978322" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1004_9">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:ExpenseExampleYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978322" unitRef="iso4217_USD" decimals="0" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1004_26">292</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleNoRedemptionYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978322" unitRef="iso4217_USD" decimals="0" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1004_31">192</rr:ExpenseExampleNoRedemptionYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978322" unitRef="iso4217_USD" decimals="0" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1004_27">592</rr:ExpenseExampleYear03>
  <rr:FeeWaiverOrReimbursementOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978322" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1004_20">-0.0010</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:ExpenseExampleYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978322" unitRef="iso4217_USD" decimals="0" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1004_29">2195</rr:ExpenseExampleYear10>
  <rr:ExpenseExampleYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978322" unitRef="iso4217_USD" decimals="0" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1004_28">1017</rr:ExpenseExampleYear05>
  <rr:OtherExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978322" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1004_17">0.0031</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978322" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1004_15">0.0010</rr:ManagementFeesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978322" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1004_21">2013-12-31</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:ExpenseExampleNoRedemptionYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978322" unitRef="iso4217_USD" decimals="0" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1004_34">2195</rr:ExpenseExampleNoRedemptionYear10>
  <rr:ExpenseExampleNoRedemptionYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978322" unitRef="iso4217_USD" decimals="0" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1004_32">592</rr:ExpenseExampleNoRedemptionYear03>
  <rr:ExpenseExampleNoRedemptionYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978322" unitRef="iso4217_USD" decimals="0" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1004_33">1017</rr:ExpenseExampleNoRedemptionYear05>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978322" unitRef="pure" decimals="2" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1004_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978322" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1004_16">0.0100</rr:DistributionAndService12b1FeesOverAssets>
  <rr:NetExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978322" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1004_22">0.0169</rr:NetExpensesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978322" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1004_19">0.0179</rr:ExpensesOverAssets>
  <rr:MaximumAccountFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978322" unitRef="iso4217_USD" decimals="0" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1004_13">10</rr:MaximumAccountFee>
  <rr:AcquiredFundFeesAndExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978322" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1004_18">0.0038</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978322" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1004_10">0.0100</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978323" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1003_0">CCFBX</dei:TradingSymbol>
  <rr:RedemptionFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978323" unitRef="iso4217_USD" decimals="0" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1003_12">0</rr:RedemptionFee>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978323" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1003_9">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:ExpenseExampleYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978323" unitRef="iso4217_USD" decimals="0" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1003_26">698</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleNoRedemptionYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978323" unitRef="iso4217_USD" decimals="0" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1003_31">198</rr:ExpenseExampleNoRedemptionYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978323" unitRef="iso4217_USD" decimals="0" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1003_27">1011</rr:ExpenseExampleYear03>
  <rr:FeeWaiverOrReimbursementOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978323" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1003_20">-0.0010</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:ExpenseExampleYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978323" unitRef="iso4217_USD" decimals="0" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1003_29">2048</rr:ExpenseExampleYear10>
  <rr:ExpenseExampleYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978323" unitRef="iso4217_USD" decimals="0" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1003_28">1248</rr:ExpenseExampleYear05>
  <rr:OtherExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978323" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1003_17">0.0037</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978323" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1003_15">0.0010</rr:ManagementFeesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978323" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1003_21">2013-12-31</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:ExpenseExampleNoRedemptionYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978323" unitRef="iso4217_USD" decimals="0" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1003_34">2048</rr:ExpenseExampleNoRedemptionYear10>
  <rr:ExpenseExampleNoRedemptionYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978323" unitRef="iso4217_USD" decimals="0" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1003_32">611</rr:ExpenseExampleNoRedemptionYear03>
  <rr:ExpenseExampleNoRedemptionYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978323" unitRef="iso4217_USD" decimals="0" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1003_33">1048</rr:ExpenseExampleNoRedemptionYear05>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978323" unitRef="pure" decimals="2" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1003_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978323" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1003_16">0.0100</rr:DistributionAndService12b1FeesOverAssets>
  <rr:NetExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978323" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1003_22">0.0175</rr:NetExpensesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978323" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1003_19">0.0185</rr:ExpensesOverAssets>
  <rr:MaximumAccountFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978323" unitRef="iso4217_USD" decimals="0" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1003_13">10</rr:MaximumAccountFee>
  <rr:AcquiredFundFeesAndExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978323" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1003_18">0.0038</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978323" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1003_10">0.0500</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978324" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1002_0">CFTAX</dei:TradingSymbol>
  <rr:RedemptionFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978324" unitRef="iso4217_USD" decimals="0" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1002_12">0</rr:RedemptionFee>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978324" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1002_9">0.0425</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:ExpenseExampleYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978324" unitRef="iso4217_USD" decimals="0" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1002_26">537</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978324" unitRef="iso4217_USD" decimals="0" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1002_27">772</rr:ExpenseExampleYear03>
  <rr:FeeWaiverOrReimbursementOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978324" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1002_20">-0.0010</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:ExpenseExampleYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978324" unitRef="iso4217_USD" decimals="0" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1002_29">1736</rr:ExpenseExampleYear10>
  <rr:ExpenseExampleYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978324" unitRef="iso4217_USD" decimals="0" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1002_28">1023</rr:ExpenseExampleYear05>
  <rr:OtherExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978324" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1002_17">0.0031</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978324" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1002_15">0.0010</rr:ManagementFeesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978324" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1002_21">2013-12-31</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978324" unitRef="pure" decimals="2" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1002_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978324" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1002_16">0.0025</rr:DistributionAndService12b1FeesOverAssets>
  <rr:NetExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978324" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1002_22">0.0094</rr:NetExpensesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978324" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1002_19">0.0104</rr:ExpensesOverAssets>
  <rr:MaximumAccountFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978324" unitRef="iso4217_USD" decimals="0" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1002_13">10</rr:MaximumAccountFee>
  <rr:AcquiredFundFeesAndExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978324" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1002_18">0.0038</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978296_602238x-9978289_602488x-9978324" unitRef="pure" decimals="4" id="id_716109_3AF48D73-FE72-4C5F-89DF-9923761284A2_1002_10">0.0100</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <rr:PortfolioTurnoverTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1001_36">&lt;tt&gt;The fund may pay transaction costs, such as commissions, when it buys and &lt;br /&gt;sells securities (or "turns over" its portfolio). A higher portfolio turnover &lt;br /&gt;rate may indicate higher transaction costs. 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.&lt;/tt&gt;</rr:PortfolioTurnoverTextBlock>
  <rr:ExpenseExampleWithRedemptionTableTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1001_47">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/ExpenseExample_S000037535Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:ExpenseExampleWithRedemptionTableTextBlock>
  <rr:ObjectivePrimaryTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1001_3">&lt;tt&gt;The fund will seek to achieve the following objectives to varying degrees:&lt;br /&gt;growth, income and preservation of capital, depending on the proximity to &lt;br /&gt;its target date. The target date is meant to roughly correspond to the year &lt;br /&gt;in which the fund beneficiary will start to withdraw funds to meet higher &lt;br /&gt;education expenses. The fund will increasingly emphasize income and &lt;br /&gt;preservation of capital by investing a greater portion of its assets in bond, &lt;br /&gt;equity-income and balanced funds as it approaches and passes its target date. &lt;br /&gt;In this way, the fund seeks to achieve an appropriate balance of total return &lt;br /&gt;and stability during different time periods.&lt;/tt&gt;</rr:ObjectivePrimaryTextBlock>
  <rr:ExpenseExampleNarrativeTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1001_24">&lt;tt&gt;This example is intended to help you compare the cost of investing in the fund &lt;br /&gt;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_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1001_38">&lt;tt&gt;The fund will attempt to achieve its investment objectives by investing in a mix&lt;br /&gt;of American Funds in different combinations and weightings. The underlying&lt;br /&gt;American Funds represent a variety of fund categories such as growth funds,&lt;br /&gt;growth-and-income funds, equity-income funds, balanced funds and bond funds. The&lt;br /&gt;fund categories represent differing investment objectives. For example, growth&lt;br /&gt;funds seek long-term growth primarily through investing in both U.S. stocks and&lt;br /&gt;stocks of issuers domiciled outside the U.S. Growth-and-income funds seek&lt;br /&gt;long-term growth-and-income primarily through investments in stocks. Equity-income &lt;br /&gt;and balanced funds generally strive for income and growth through stocks and/or &lt;br /&gt;bond investments, while bond funds seek current income through bond investments.&lt;br /&gt; &lt;br /&gt;The investment adviser may periodically rebalance or modify the asset mix of the&lt;br /&gt;funds and change the underlying fund investments. According to its current&lt;br /&gt;investment approach, the percentage of the fund invested in different categories&lt;br /&gt;will change until the fund reaches its target date. Upon reaching its target&lt;br /&gt;date, the fund will be principally invested in fixed-income funds and may merge&lt;br /&gt;into the Enrollment Fund, which will also be principally invested in&lt;br /&gt;fixed-income funds.&lt;br /&gt; &lt;br /&gt;The fund&apos;s investment adviser periodically reviews the investment strategies and&lt;br /&gt;asset mix of the underlying funds. The investment adviser will also consider&lt;br /&gt;whether overall market conditions would favor a change in the exposure of the&lt;br /&gt;fund to various asset types or geographic regions. Based on these considerations, &lt;br /&gt;the investment adviser may make adjustments to underlying fund holdings by &lt;br /&gt;adjusting the percentage of individual underlying funds within the fund, or &lt;br /&gt;adding or removing underlying funds. The investment adviser may also determine &lt;br /&gt;not to change the underlying fund allocations, particularly in response to &lt;br /&gt;short-term market movements, if in its opinion the combination of underlying &lt;br /&gt;funds is appropriate to meet the fund&apos;s investment objective.&lt;br /&gt; &lt;br /&gt;With respect to its fixed-income investments, the underlying funds in which &lt;br /&gt;the fund invests may hold debt securities with a wide range of quality and &lt;br /&gt;maturities. The fund may invest in underlying funds with significant exposure &lt;br /&gt;to bonds rated BB+ or below and Ba1 or below by Nationally Recognized Statistical &lt;br /&gt;Rating 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." Exposure to lower rated securities may help the fund achieve its&lt;br /&gt;objective of providing current income.&lt;br /&gt; &lt;br /&gt;The underlying funds may hold securities issued and guaranteed by the U.S.&lt;br /&gt;government, securities issued by federal agencies and instrumentalities and&lt;br /&gt;securities backed by mortgages or other assets. The underlying funds may also&lt;br /&gt;invest in the debt securities of governments, agencies, corporations and other&lt;br /&gt;entities domiciled outside the United States.&lt;br /&gt;&amp;#xA0;&amp;#xA0;&lt;br /&gt;The following chart illustrates the current investment approach of the fund by&lt;br /&gt;showing how its investment in the various fund categories will change over time.&lt;br /&gt; &lt;br /&gt;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;Current investment approach &lt;br /&gt;&lt;br /&gt;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;2030&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;2027&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;2024&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;2021&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;2018&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;2015&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;Enrollment&lt;br /&gt;&lt;br /&gt;Growth funds&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;20%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;15%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;10%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&lt;br /&gt;Growth-and-income funds&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;70%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;55%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;45%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;40%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;20%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&lt;br /&gt;Equity-income and balanced funds&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;10%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;10%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;15%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;20%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;10%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&lt;br /&gt;Bond funds&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;10%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;20%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;35%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;45%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;60%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;90%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;100%&lt;br /&gt;&lt;br /&gt;Years to distribution&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;15-18&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;12-15&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;9-12&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;6-9&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;3-6&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0-3&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;target date&lt;br /&gt;&lt;br /&gt;The investment adviser anticipates that the fund will invest its assets within a&lt;br /&gt;range that deviates no more than 10% above or below the investment approach set&lt;br /&gt;forth above. For example, a 20% target allocation to growth funds is not expected &lt;br /&gt;to be greater than 30% or less than 10%. The investment adviser will continuously &lt;br /&gt;monitor the fund and may make modifications to either the investment approach or &lt;br /&gt;the underlying fund allocations that the investment adviser believes could benefit &lt;br /&gt;shareholders.&lt;/tt&gt;</rr:StrategyNarrativeTextBlock>
  <rr:RiskReturnHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1001_1">American Funds College 2027 FundSM</rr:RiskReturnHeading>
  <rr:ExpenseBreakpointDiscounts contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1001_6">You may qualify for a Class 529-A sales charge discount if you and your
family invest, or agree to invest in the future, at least $25,000 in
American Funds.</rr:ExpenseBreakpointDiscounts>
  <rr:ExpenseExampleHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1001_23">Example</rr:ExpenseExampleHeading>
  <rr:PerformanceOneYearOrLess contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1001_45">Because the fund began investment operations on September 14, 2012, information
regarding investment results is not available as of the date of this prospectus.</rr:PerformanceOneYearOrLess>
  <rr:ObjectiveHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1001_2">Investment objective</rr:ObjectiveHeading>
  <rr:RiskLoseMoney contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1001_41">You may lose money by investing in the fund.</rr:RiskLoseMoney>
  <rr:RiskHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1001_39">Principal risks</rr:RiskHeading>
  <rr:ShareholderFeesCaption contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1001_8">Shareholder fees (fees paid directly from your investment) </rr:ShareholderFeesCaption>
  <rr:ExpenseExampleByYearCaption contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1001_25">Although your actual costs may be higher or lower, based on these assumptions your costs would be:</rr:ExpenseExampleByYearCaption>
  <rr:BarChartAndPerformanceTableHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1001_43">Investment results</rr:BarChartAndPerformanceTableHeading>
  <rr:ExpenseBreakpointMinimumInvestmentRequiredAmount contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290" unitRef="iso4217_USD" decimals="0" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1001_7">25000</rr:ExpenseBreakpointMinimumInvestmentRequiredAmount>
  <rr:OperatingExpensesCaption contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1001_14">Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)</rr:OperatingExpensesCaption>
  <rr:PortfolioTurnoverHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1001_35">Portfolio turnover</rr:PortfolioTurnoverHeading>
  <rr:RiskNarrativeTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_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;Investors in the fund should have a long-term perspective and be able to&lt;br /&gt;tolerate potentially sharp declines in value.&lt;br /&gt; &lt;br /&gt;Allocation risk - Investments in the fund are subject to risks related to the&lt;br /&gt;investment adviser&apos;s allocation choices. The selection of the underlying funds&lt;br /&gt;and the allocation of the fund&apos;s assets could cause the fund to lose value or&lt;br /&gt;its results to lag relevant benchmarks or other funds with similar objectives.&lt;br /&gt; &lt;br /&gt;Fund structure - The fund invests in underlying funds and incurs expenses&lt;br /&gt;related to the underlying funds. In addition, investors in the fund will incur&lt;br /&gt;fees to pay for certain expenses related to the operations of the fund. An&lt;br /&gt;investor holding the underlying funds directly and in the same proportions as&lt;br /&gt;the fund would incur lower overall expenses but would not receive the benefit &lt;br /&gt;of the portfolio management and other services provided by the fund.&lt;br /&gt; &lt;br /&gt;Because the fund&apos;s investments consist of underlying funds, the fund&apos;s risks are&lt;br /&gt;directly related to the risks of the underlying funds. For this reason, it is&lt;br /&gt;important to understand the risks associated with investing in the underlying&lt;br /&gt;funds.&lt;br /&gt; &lt;br /&gt;Market conditions - The prices of, and the income generated by, the common&lt;br /&gt;stocks, bonds and other securities held by the underlying funds may decline due&lt;br /&gt;to market conditions and other factors, including those directly involving the&lt;br /&gt;issuers of securities held by the underlying funds.&lt;br /&gt; &lt;br /&gt;Investing in stocks - Investing in stocks may involve larger price swings and&lt;br /&gt;greater potential for loss than other types of investments. As a result, the&lt;br /&gt;value of the underlying funds may be subject to sharp, short-term declines in&lt;br /&gt;value. Income provided by an underlying fund may be reduced by changes in the&lt;br /&gt;dividend policies of, and the capital resources available at, the companies in&lt;br /&gt;which the underlying fund invests.&lt;br /&gt; &lt;br /&gt;Investing in growth-oriented stocks - Growth-oriented stocks may involve larger&lt;br /&gt;price swings and greater potential for loss than other types of investments.&lt;br /&gt; &lt;br /&gt;Investing in income-oriented stocks - Income provided by an underlying fund may&lt;br /&gt;be reduced by changes in the dividend policies of, and the capital resources&lt;br /&gt;available at, the companies in which the underlying fund invests.&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 underlying 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. Credit risk is gauged, in part, by the&lt;br /&gt;credit ratings of the securities in which the underlying fund invests. However,&lt;br /&gt;ratings are only the opinions of the rating agencies issuing them and are not&lt;br /&gt;guarantees as to credit quality or an evaluation of market risk.&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 bonds rated Ba1 or BB+ or &lt;br /&gt;below by Nationally Recognized Statistical Rating Organizations or unrated &lt;br /&gt;but determined by the underlying fund&apos;s investment adviser to be of equivalent &lt;br /&gt;quality. Such securities are considered speculative and are sometimes referred &lt;br /&gt;to as "junk bonds." The value of the underlying funds may be similarly affected.&lt;br /&gt; &lt;br /&gt;Investing in small companies - Investing in smaller companies may pose additional &lt;br /&gt;risks. For example, it is often more difficult to value or dispose of small &lt;br /&gt;company stocks and more difficult to obtain information about smaller companies &lt;br /&gt;than about larger companies. In addition, the prices of these stocks may be more &lt;br /&gt;volatile than stocks of larger, more established companies.&lt;br /&gt; &lt;br /&gt;Investing outside the United States - Securities of issuers domiciled outside&lt;br /&gt;the United States, or with significant operations outside the United States, &lt;br /&gt;may lose value because of adverse political, social, economic or market &lt;br /&gt;developments in the countries or regions in which the issuer operates. These &lt;br /&gt;securities may also lose value due to changes in foreign currency exchange &lt;br /&gt;rates against the U.S. dollar and/or currencies of other countries. Securities &lt;br /&gt;markets in certain countries may be more volatile and/or less liquid than those &lt;br /&gt;in the United States. Investments outside the United States may also be subject &lt;br /&gt;to different settlement and accounting practices and different regulatory, legal &lt;br /&gt;and reporting standards, and may be more difficult to value, than those in the&lt;br /&gt;United States. The risks of investing outside the United States may be heightened &lt;br /&gt;in connection with investments in emerging markets.&lt;br /&gt; &lt;br /&gt;Investing in emerging markets - Investing in emerging markets may involve risks&lt;br /&gt;in addition to and greater than those generally associated with investing in&lt;br /&gt;developed countries. For instance, developing countries may have less developed&lt;br /&gt;legal and accounting systems than those in developed countries. The governments&lt;br /&gt;of these countries may be less stable and more likely to impose capital controls, &lt;br /&gt;nationalize a company or industry, place restrictions on foreign ownership and &lt;br /&gt;on withdrawing sale proceeds of securities from the country, and/or impose &lt;br /&gt;punitive taxes that could adversely affect the prices of securities. In addition, &lt;br /&gt;the economies of these countries may be dependent on relatively few industries &lt;br /&gt;that are more susceptible to local and global changes. Securities markets in &lt;br /&gt;these countries can also be relatively small and have substantially lower trading &lt;br /&gt;volumes. As a result, securities issued in these countries may be more volatile &lt;br /&gt;and less liquid, and may be more difficult to value, than securities issued in &lt;br /&gt;countries with more developed economies and/or markets. Additionally, there may &lt;br /&gt;be increased settlement risks for transactions in local securities.&lt;br /&gt; &lt;br /&gt;Management - The investment adviser to the fund and to the underlying funds&lt;br /&gt;actively manages each underlying fund&apos;s investments. Consequently, the&lt;br /&gt;underlying funds are subject to the risk that the methods and analyses employed&lt;br /&gt;by the investment adviser in this process may not produce the desired results.&lt;br /&gt;This could cause an underlying fund to lose value or its investment results to&lt;br /&gt;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 governmental &lt;br /&gt;agency, 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_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1001_4">Fees and expenses of the fund</rr:ExpenseHeading>
  <rr:StrategyHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1001_37">Principal investment strategies</rr:StrategyHeading>
  <rr:PerformanceNarrativeTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1001_44">&lt;tt&gt;Because the fund began investment operations on September 14, 2012, information&lt;br /&gt;regarding investment results is not available as of the date of this prospectus.&lt;/tt&gt;</rr:PerformanceNarrativeTextBlock>
  <rr:ExpenseNarrativeTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_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 a Class 529-A sales charge discount if&lt;br /&gt;you and your family invest, or agree to invest in the future, at least $25,000&lt;br /&gt;in American Funds. More information about these and other discounts is available&lt;br /&gt;from your financial professional and in the "Sales charge reductions and&lt;br /&gt;waivers" section on page 51 of the prospectus and on page 65 of the fund&apos;s&lt;br /&gt;statement of additional information.&lt;/tt&gt;</rr:ExpenseNarrativeTextBlock>
  <rr:AnnualFundOperatingExpensesTableTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1001_49">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/OperatingExpensesData_S000037535Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:AnnualFundOperatingExpensesTableTextBlock>
  <rr:ExpenseExampleNoRedemptionByYearCaption contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1001_30">For the share classes listed below, you would pay the following if you did not redeem your shares:</rr:ExpenseExampleNoRedemptionByYearCaption>
  <rr:RiskNotInsuredDepositoryInstitution contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_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_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1001_48">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/ExpenseExampleNoRedemption_S000037535Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:ExpenseExampleNoRedemptionTableTextBlock>
  <rr:ShareholderFeesTableTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1001_46">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/ShareholderFeesData_S000037535Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:ShareholderFeesTableTextBlock>
  <dei:TradingSymbol contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978325" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1005_0">CTSEX</dei:TradingSymbol>
  <rr:RedemptionFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978325" unitRef="iso4217_USD" decimals="0" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1005_12">0</rr:RedemptionFee>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978325" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1005_9">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:ExpenseExampleYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978325" unitRef="iso4217_USD" decimals="0" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1005_26">141</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978325" unitRef="iso4217_USD" decimals="0" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1005_27">442</rr:ExpenseExampleYear03>
  <rr:FeeWaiverOrReimbursementOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978325" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1005_20">-0.0012</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:ExpenseExampleYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978325" unitRef="iso4217_USD" decimals="0" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1005_29">1670</rr:ExpenseExampleYear10>
  <rr:ExpenseExampleYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978325" unitRef="iso4217_USD" decimals="0" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1005_28">764</rr:ExpenseExampleYear05>
  <rr:OtherExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978325" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1005_17">0.0030</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978325" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1005_15">0.0010</rr:ManagementFeesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978325" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1005_21">2013-12-31</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978325" unitRef="pure" decimals="2" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1005_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978325" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1005_16">0.0050</rr:DistributionAndService12b1FeesOverAssets>
  <rr:NetExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978325" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1005_22">0.0119</rr:NetExpensesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978325" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1005_19">0.0131</rr:ExpensesOverAssets>
  <rr:MaximumAccountFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978325" unitRef="iso4217_USD" decimals="0" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1005_13">10</rr:MaximumAccountFee>
  <rr:AcquiredFundFeesAndExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978325" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1005_18">0.0041</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978325" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1005_10">0.0000</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978326" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1004_0">CTSCX</dei:TradingSymbol>
  <rr:RedemptionFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978326" unitRef="iso4217_USD" decimals="0" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1004_12">0</rr:RedemptionFee>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978326" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1004_9">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:ExpenseExampleYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978326" unitRef="iso4217_USD" decimals="0" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1004_26">295</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleNoRedemptionYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978326" unitRef="iso4217_USD" decimals="0" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1004_31">195</rr:ExpenseExampleNoRedemptionYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978326" unitRef="iso4217_USD" decimals="0" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1004_27">606</rr:ExpenseExampleYear03>
  <rr:FeeWaiverOrReimbursementOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978326" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1004_20">-0.0012</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:ExpenseExampleYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978326" unitRef="iso4217_USD" decimals="0" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1004_29">2247</rr:ExpenseExampleYear10>
  <rr:ExpenseExampleYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978326" unitRef="iso4217_USD" decimals="0" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1004_28">1041</rr:ExpenseExampleYear05>
  <rr:OtherExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978326" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1004_17">0.0033</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978326" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1004_15">0.0010</rr:ManagementFeesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978326" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1004_21">2013-12-31</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:ExpenseExampleNoRedemptionYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978326" unitRef="iso4217_USD" decimals="0" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1004_34">2247</rr:ExpenseExampleNoRedemptionYear10>
  <rr:ExpenseExampleNoRedemptionYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978326" unitRef="iso4217_USD" decimals="0" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1004_32">606</rr:ExpenseExampleNoRedemptionYear03>
  <rr:ExpenseExampleNoRedemptionYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978326" unitRef="iso4217_USD" decimals="0" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1004_33">1041</rr:ExpenseExampleNoRedemptionYear05>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978326" unitRef="pure" decimals="2" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1004_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978326" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1004_16">0.0100</rr:DistributionAndService12b1FeesOverAssets>
  <rr:NetExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978326" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1004_22">0.0172</rr:NetExpensesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978326" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1004_19">0.0184</rr:ExpensesOverAssets>
  <rr:MaximumAccountFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978326" unitRef="iso4217_USD" decimals="0" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1004_13">10</rr:MaximumAccountFee>
  <rr:AcquiredFundFeesAndExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978326" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1004_18">0.0041</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978326" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1004_10">0.0100</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978327" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1003_0">CTSBX</dei:TradingSymbol>
  <rr:RedemptionFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978327" unitRef="iso4217_USD" decimals="0" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1003_12">0</rr:RedemptionFee>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978327" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1003_9">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:ExpenseExampleYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978327" unitRef="iso4217_USD" decimals="0" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1003_26">701</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleNoRedemptionYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978327" unitRef="iso4217_USD" decimals="0" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1003_31">201</rr:ExpenseExampleNoRedemptionYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978327" unitRef="iso4217_USD" decimals="0" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1003_27">1024</rr:ExpenseExampleYear03>
  <rr:FeeWaiverOrReimbursementOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978327" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1003_20">-0.0012</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:ExpenseExampleYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978327" unitRef="iso4217_USD" decimals="0" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1003_29">2100</rr:ExpenseExampleYear10>
  <rr:ExpenseExampleYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978327" unitRef="iso4217_USD" decimals="0" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1003_28">1272</rr:ExpenseExampleYear05>
  <rr:OtherExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978327" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1003_17">0.0039</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978327" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1003_15">0.0010</rr:ManagementFeesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978327" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1003_21">2013-12-31</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:ExpenseExampleNoRedemptionYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978327" unitRef="iso4217_USD" decimals="0" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1003_34">2100</rr:ExpenseExampleNoRedemptionYear10>
  <rr:ExpenseExampleNoRedemptionYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978327" unitRef="iso4217_USD" decimals="0" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1003_32">624</rr:ExpenseExampleNoRedemptionYear03>
  <rr:ExpenseExampleNoRedemptionYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978327" unitRef="iso4217_USD" decimals="0" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1003_33">1072</rr:ExpenseExampleNoRedemptionYear05>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978327" unitRef="pure" decimals="2" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1003_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978327" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1003_16">0.0100</rr:DistributionAndService12b1FeesOverAssets>
  <rr:NetExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978327" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1003_22">0.0178</rr:NetExpensesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978327" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1003_19">0.0190</rr:ExpensesOverAssets>
  <rr:MaximumAccountFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978327" unitRef="iso4217_USD" decimals="0" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1003_13">10</rr:MaximumAccountFee>
  <rr:AcquiredFundFeesAndExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978327" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1003_18">0.0041</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978327" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1003_10">0.0500</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978328" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1002_0">CSTAX</dei:TradingSymbol>
  <rr:RedemptionFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978328" unitRef="iso4217_USD" decimals="0" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1002_12">0</rr:RedemptionFee>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978328" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1002_9">0.0425</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:ExpenseExampleYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978328" unitRef="iso4217_USD" decimals="0" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1002_26">540</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978328" unitRef="iso4217_USD" decimals="0" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1002_27">785</rr:ExpenseExampleYear03>
  <rr:FeeWaiverOrReimbursementOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978328" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1002_20">-0.0012</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:ExpenseExampleYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978328" unitRef="iso4217_USD" decimals="0" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1002_29">1789</rr:ExpenseExampleYear10>
  <rr:ExpenseExampleYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978328" unitRef="iso4217_USD" decimals="0" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1002_28">1047</rr:ExpenseExampleYear05>
  <rr:OtherExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978328" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1002_17">0.0033</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978328" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1002_15">0.0010</rr:ManagementFeesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978328" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1002_21">2013-12-31</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978328" unitRef="pure" decimals="2" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1002_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978328" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1002_16">0.0025</rr:DistributionAndService12b1FeesOverAssets>
  <rr:NetExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978328" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1002_22">0.0097</rr:NetExpensesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978328" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1002_19">0.0109</rr:ExpensesOverAssets>
  <rr:MaximumAccountFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978328" unitRef="iso4217_USD" decimals="0" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1002_13">10</rr:MaximumAccountFee>
  <rr:AcquiredFundFeesAndExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978328" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1002_18">0.0041</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978328" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1002_10">0.0100</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978329" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1006_0">CTSFX</dei:TradingSymbol>
  <rr:RedemptionFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978329" unitRef="iso4217_USD" decimals="0" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1006_12">0</rr:RedemptionFee>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978329" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1006_9">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:ExpenseExampleYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978329" unitRef="iso4217_USD" decimals="0" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1006_26">96</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978329" unitRef="iso4217_USD" decimals="0" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1006_27">305</rr:ExpenseExampleYear03>
  <rr:FeeWaiverOrReimbursementOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978329" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1006_20">-0.0012</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:ExpenseExampleYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978329" unitRef="iso4217_USD" decimals="0" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1006_29">1166</rr:ExpenseExampleYear10>
  <rr:ExpenseExampleYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978329" unitRef="iso4217_USD" decimals="0" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1006_28">529</rr:ExpenseExampleYear05>
  <rr:OtherExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978329" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1006_17">0.0036</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978329" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1006_15">0.0010</rr:ManagementFeesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978329" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1006_21">2013-12-31</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978329" unitRef="pure" decimals="2" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1006_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978329" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1006_16">0.0000</rr:DistributionAndService12b1FeesOverAssets>
  <rr:NetExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978329" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1006_22">0.0075</rr:NetExpensesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978329" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1006_19">0.0087</rr:ExpensesOverAssets>
  <rr:MaximumAccountFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978329" unitRef="iso4217_USD" decimals="0" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1006_13">10</rr:MaximumAccountFee>
  <rr:AcquiredFundFeesAndExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978329" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1006_18">0.0041</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978297_602238x-9978290_602488x-9978329" unitRef="pure" decimals="4" id="id_716109_EE1E19B7-261A-4A5F-876A-5C6C8D13090A_1006_10">0.0000</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <rr:PortfolioTurnoverTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1001_36">&lt;tt&gt;The fund may pay transaction costs, such as commissions, when it buys and &lt;br /&gt;sells securities (or "turns over" its portfolio). A higher portfolio turnover &lt;br /&gt;rate may indicate higher transaction costs. 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.&lt;/tt&gt;</rr:PortfolioTurnoverTextBlock>
  <rr:ExpenseExampleWithRedemptionTableTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1001_47">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/ExpenseExample_S000037534Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:ExpenseExampleWithRedemptionTableTextBlock>
  <rr:ObjectivePrimaryTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1001_3">&lt;tt&gt;The fund will seek to achieve the following objectives to varying degrees:&lt;br /&gt;growth, income and preservation of capital, depending on the proximity to &lt;br /&gt;its target date. The target date is meant to roughly correspond to the year &lt;br /&gt;in which the fund beneficiary will start to withdraw funds to meet higher &lt;br /&gt;education expenses. The fund will increasingly emphasize income and &lt;br /&gt;preservation of capital by investing a greater portion of its assets in &lt;br /&gt;bond, equity-income and balanced funds as it approaches and passes its &lt;br /&gt;target date. In this way, the fund seeks to achieve an appropriate balance &lt;br /&gt;of total return and stability during different time periods.&lt;/tt&gt;</rr:ObjectivePrimaryTextBlock>
  <rr:ExpenseExampleNarrativeTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1001_24">&lt;tt&gt;This example is intended to help you compare the cost of investing in the fund &lt;br /&gt;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_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1001_38">&lt;tt&gt;The fund will attempt to achieve its investment objectives by investing in &lt;br /&gt;a mix of American Funds in different combinations and weightings. The &lt;br /&gt;underlying American Funds represent a variety of fund categories such as &lt;br /&gt;growth funds, growth-and-income funds, equity-income funds, balanced funds &lt;br /&gt;and bond funds. The fund categories represent differing investment objectives. &lt;br /&gt;For example, growth funds seek long-term growth primarily through investing &lt;br /&gt;in both U.S. stocks and stocks of issuers domiciled outside the U.S. &lt;br /&gt;Growth-and-income funds seek long-term growth-and-income primarily through &lt;br /&gt;investments in stocks. Equity-income and balanced funds generally strive for &lt;br /&gt;income and growth through stocks and/or bond investments, while bond funds &lt;br /&gt;seek current income through bond investments.&lt;br /&gt; &lt;br /&gt;The investment adviser may periodically rebalance or modify the asset mix of &lt;br /&gt;the funds and change the underlying fund investments. According to its current&lt;br /&gt;investment approach, the percentage of the fund invested in different categories&lt;br /&gt;will change until the fund reaches its target date. Upon reaching its target&lt;br /&gt;date, the fund will be principally invested in fixed-income funds and may merge&lt;br /&gt;into the Enrollment Fund, which will also be principally invested in&lt;br /&gt;fixed-income funds.&lt;br /&gt; &lt;br /&gt;The fund&apos;s investment adviser periodically reviews the investment strategies and&lt;br /&gt;asset mix of the underlying funds. The investment adviser will also consider&lt;br /&gt;whether overall market conditions would favor a change in the exposure of the&lt;br /&gt;fund to various asset types or geographic regions. Based on these considerations, &lt;br /&gt;the investment adviser may make adjustments to underlying fund holdings by &lt;br /&gt;adjusting the percentage of individual underlying funds within the fund, or &lt;br /&gt;adding or removing underlying funds. The investment adviser may also determine &lt;br /&gt;not to change the underlying fund allocations, particularly in response to &lt;br /&gt;short-term market movements, if in its opinion the combination of underlying &lt;br /&gt;funds is appropriate to meet the fund&apos;s investment objective.&lt;br /&gt; &lt;br /&gt;With respect to its fixed-income investments, the underlying funds in which the&lt;br /&gt;fund invests may hold debt securities with a wide range of quality and maturities. &lt;br /&gt;The fund may invest in underlying funds with significant exposure to bonds rated &lt;br /&gt;BB+ or below and Ba1 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." Exposure to lower rated securities may help the fund achieve its&lt;br /&gt;objective of providing current income.&lt;br /&gt; &lt;br /&gt;The underlying funds may hold securities issued and guaranteed by the U.S.&lt;br /&gt;government, securities issued by federal agencies and instrumentalities and&lt;br /&gt;securities backed by mortgages or other assets. The underlying funds may also&lt;br /&gt;invest in the debt securities of governments, agencies, corporations and other&lt;br /&gt;entities domiciled outside the United States.&lt;br /&gt;&amp;#xA0;&amp;#xA0;&lt;br /&gt;The following chart illustrates the current investment approach of the fund by&lt;br /&gt;showing how its investment in the various fund categories will change over time.&lt;br /&gt; &lt;br /&gt;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;Current investment approach&lt;br /&gt;&lt;br /&gt;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;2030&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;2027&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;2024&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;2021&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;2018&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;2015&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;Enrollment&lt;br /&gt;&lt;br /&gt;Growth funds&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;20%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;15%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;10%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&lt;br /&gt;Growth-and-income funds&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;70%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;55%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;45%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;40%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;20%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&lt;br /&gt;Equity-income and balanced funds&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;10%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;10%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;15%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;20%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;10%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0%&lt;br /&gt;Bond funds&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;10%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;20%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;35%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;45%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;60%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;90%&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;100%&lt;br /&gt;&lt;br /&gt;Years to distribution&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;15-18&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;12-15&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;9-12&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;6-9&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;3-6&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;0-3&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;&amp;#xA0;target date&lt;br /&gt;&lt;br /&gt;The investment adviser anticipates that the fund will invest its assets within a&lt;br /&gt;range that deviates no more than 10% above or below the investment approach set&lt;br /&gt;forth above. For example, a 20% target allocation to growth funds is not expected &lt;br /&gt;to be greater than 30% or less than 10%. The investment adviser will continuously &lt;br /&gt;monitor the fund and may make modifications to either the investment approach or &lt;br /&gt;the underlying fund allocations that the investment adviser believes could benefit &lt;br /&gt;shareholders.&lt;/tt&gt;</rr:StrategyNarrativeTextBlock>
  <rr:RiskReturnHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1001_1">American Funds College 2030 FundSM</rr:RiskReturnHeading>
  <rr:ExpenseBreakpointDiscounts contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1001_6">You may qualify for a Class 529-A sales charge discount if you and your
family invest, or agree to invest in the future, at least $25,000 in
American Funds.</rr:ExpenseBreakpointDiscounts>
  <rr:ExpenseExampleHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1001_23">Example</rr:ExpenseExampleHeading>
  <rr:PerformanceOneYearOrLess contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1001_45">Because the fund began investment operations on September 14, 2012, information
regarding investment results is not available as of the date of this prospectus.</rr:PerformanceOneYearOrLess>
  <rr:ObjectiveHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1001_2">Investment objective</rr:ObjectiveHeading>
  <rr:RiskLoseMoney contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1001_41">You may lose money by investing in the fund.</rr:RiskLoseMoney>
  <rr:RiskHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1001_39">Principal risks</rr:RiskHeading>
  <rr:ShareholderFeesCaption contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1001_8">Shareholder fees (fees paid directly from your investment)</rr:ShareholderFeesCaption>
  <rr:ExpenseExampleByYearCaption contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1001_25">Although your actual costs may be higher or lower, based on these assumptions your costs would be:</rr:ExpenseExampleByYearCaption>
  <rr:BarChartAndPerformanceTableHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1001_43">Investment results</rr:BarChartAndPerformanceTableHeading>
  <rr:ExpenseBreakpointMinimumInvestmentRequiredAmount contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291" unitRef="iso4217_USD" decimals="0" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1001_7">25000</rr:ExpenseBreakpointMinimumInvestmentRequiredAmount>
  <rr:OperatingExpensesCaption contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1001_14">Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment) </rr:OperatingExpensesCaption>
  <rr:PortfolioTurnoverHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1001_35">Portfolio turnover</rr:PortfolioTurnoverHeading>
  <rr:RiskNarrativeTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_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;Investors in the fund should have a long-term perspective and be able to&lt;br /&gt;tolerate potentially sharp declines in value.&lt;br /&gt; &lt;br /&gt;Allocation risk - Investments in the fund are subject to risks related to the&lt;br /&gt;investment adviser&apos;s allocation choices. The selection of the underlying funds&lt;br /&gt;and the allocation of the fund&apos;s assets could cause the fund to lose value or&lt;br /&gt;its results to lag relevant benchmarks or other funds with similar objectives.&lt;br /&gt; &lt;br /&gt;Fund structure - The fund invests in underlying funds and incurs expenses&lt;br /&gt;related to the underlying funds. In addition, investors in the fund will incur&lt;br /&gt;fees to pay for certain expenses related to the operations of the fund. An&lt;br /&gt;investor holding the underlying funds directly and in the same proportions as&lt;br /&gt;the fund would incur lower overall expenses but would not receive the benefit &lt;br /&gt;of the portfolio management and other services provided by the fund.&lt;br /&gt; &lt;br /&gt;Because the fund&apos;s investments consist of underlying funds, the fund&apos;s risks are&lt;br /&gt;directly related to the risks of the underlying funds. For this reason, it is&lt;br /&gt;important to understand the risks associated with investing in the underlying&lt;br /&gt;funds.&lt;br /&gt; &lt;br /&gt;Market conditions - The prices of, and the income generated by, the common&lt;br /&gt;stocks, bonds and other securities held by the underlying funds may decline &lt;br /&gt;due to market conditions and other factors, including those directly involving &lt;br /&gt;the issuers of securities held by the underlying funds.&lt;br /&gt; &lt;br /&gt;Investing in stocks - Investing in stocks may involve larger price swings and&lt;br /&gt;greater potential for loss than other types of investments. As a result, the&lt;br /&gt;value of the underlying funds may be subject to sharp, short-term declines in&lt;br /&gt;value. Income provided by an underlying fund may be reduced by changes in the&lt;br /&gt;dividend policies of, and the capital resources available at, the companies in&lt;br /&gt;which the underlying fund invests.&lt;br /&gt; &lt;br /&gt;Investing in growth-oriented stocks - Growth-oriented stocks may involve larger&lt;br /&gt;price swings and greater potential for loss than other types of investments.&lt;br /&gt; &lt;br /&gt;Investing in income-oriented stocks - Income provided by an underlying fund may&lt;br /&gt;be reduced by changes in the dividend policies of, and the capital resources&lt;br /&gt;available at, the companies in which the underlying fund invests.&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&lt;br /&gt;underlying fund 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. Credit risk is gauged, in part, by the&lt;br /&gt;credit ratings of the securities in which the underlying fund invests. However,&lt;br /&gt;ratings are only the opinions of the rating agencies issuing them and are not&lt;br /&gt;guarantees as to credit quality or an evaluation of market risk.&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 bonds rated Ba1 or BB+ or below &lt;br /&gt;by Nationally Recognized Statistical Rating Organizations or unrated but &lt;br /&gt;determined by the underlying fund&apos;s investment adviser to be of equivalent &lt;br /&gt;quality. Such securities are considered speculative and are sometimes referred &lt;br /&gt;to as "junk bonds." The value of the underlying funds may be similarly affected.&lt;br /&gt; &lt;br /&gt;Investing in small companies - Investing in smaller companies may pose additional &lt;br /&gt;risks. For example, it is often more difficult to value or dispose of small &lt;br /&gt;company stocks and more difficult to obtain information about smaller companies &lt;br /&gt;than about larger companies. In addition, the prices of these stocks may be more &lt;br /&gt;volatile than stocks of larger, more established companies.&lt;br /&gt; &lt;br /&gt;Investing outside the United States - Securities of issuers domiciled outside&lt;br /&gt;the United States, or with significant operations outside the United States, &lt;br /&gt;may lose value because of adverse political, social, economic or market &lt;br /&gt;developments in the countries or regions in which the issuer operates. These &lt;br /&gt;securities may also lose value due to changes in foreign currency exchange rates &lt;br /&gt;against the U.S. dollar and/or currencies of other countries. Securities markets &lt;br /&gt;in certain countries may be more volatile and/or less liquid than those in the &lt;br /&gt;United States. Investments outside the United States may also be subject to &lt;br /&gt;different settlement and accounting practices and different regulatory, legal &lt;br /&gt;and reporting standards, and may be more difficult to value, than those in the&lt;br /&gt;United States. The risks of investing outside the United States may be&lt;br /&gt;heightened in connection with investments in emerging markets.&lt;br /&gt; &lt;br /&gt;Investing in emerging markets - Investing in emerging markets may involve risks&lt;br /&gt;in addition to and greater than those generally associated with investing in&lt;br /&gt;developed countries. For instance, developing countries may have less developed&lt;br /&gt;legal and accounting systems than those in developed countries. The governments&lt;br /&gt;of these countries may be less stable and more likely to impose capital controls, &lt;br /&gt;nationalize a company or industry, place restrictions on foreign ownership and &lt;br /&gt;on withdrawing sale proceeds of securities from the country, and/or impose &lt;br /&gt;punitive taxes that could adversely affect the prices of securities. In addition, &lt;br /&gt;the economies of these countries may be dependent on relatively few industries &lt;br /&gt;that are more susceptible to local and global changes. Securities markets in &lt;br /&gt;these countries can also be relatively small and have substantially lower trading &lt;br /&gt;volumes. As a result, securities issued in these countries may be more volatile &lt;br /&gt;and less liquid, and may be more difficult to value, than securities issued in &lt;br /&gt;countries with more developed economies and/or markets. Additionally, there may &lt;br /&gt;be increased settlement risks for transactions in local securities.&lt;br /&gt; &lt;br /&gt;Management - The investment adviser to the fund and to the underlying funds&lt;br /&gt;actively manages each underlying fund&apos;s investments. Consequently, the underlying &lt;br /&gt;funds are subject to the risk that the methods and analyses employed by the &lt;br /&gt;investment adviser in this process may not produce the desired results. This could &lt;br /&gt;cause an underlying fund to lose value or its investment results to lag relevant &lt;br /&gt;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 investment &lt;br /&gt;program.&lt;/tt&gt;</rr:RiskNarrativeTextBlock>
  <rr:ExpenseHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1001_4">Fees and expenses of the fund</rr:ExpenseHeading>
  <rr:StrategyHeading contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1001_37">Principal investment strategies</rr:StrategyHeading>
  <rr:PerformanceNarrativeTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1001_44">&lt;tt&gt;Because the fund began investment operations on September 14, 2012, information&lt;br /&gt;regarding investment results is not available as of the date of this prospectus.&lt;/tt&gt;</rr:PerformanceNarrativeTextBlock>
  <rr:ExpenseNarrativeTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_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 a Class 529-A sales charge discount if&lt;br /&gt;you and your family invest, or agree to invest in the future, at least $25,000&lt;br /&gt;in American Funds. More information about these and other discounts is available&lt;br /&gt;from your financial professional and in the "Sales charge reductions and waivers" &lt;br /&gt;section on page 51 of the prospectus and on page 65 of the fund&apos;s statement of &lt;br /&gt;additional information.&lt;/tt&gt;</rr:ExpenseNarrativeTextBlock>
  <rr:AnnualFundOperatingExpensesTableTextBlock contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1001_49">&lt;div style="display:none"&gt;~ http://www.americanfunds.com/role/OperatingExpensesData_S000037534Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:AnnualFundOperatingExpensesTableTextBlock>
  <rr:ExpenseExampleNoRedemptionByYearCaption contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1001_30">For the share classes listed below, you would pay the following if you did not redeem your shares:</rr:ExpenseExampleNoRedemptionByYearCaption>
  <rr:RiskNotInsuredDepositoryInstitution contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_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>
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  <dei:TradingSymbol contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978330" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1006_0">CTHFX</dei:TradingSymbol>
  <rr:RedemptionFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978330" unitRef="iso4217_USD" decimals="0" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1006_12">0</rr:RedemptionFee>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978330" unitRef="pure" decimals="4" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1006_9">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:ExpenseExampleYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978330" unitRef="iso4217_USD" decimals="0" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1006_26">96</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978330" unitRef="iso4217_USD" decimals="0" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1006_27">305</rr:ExpenseExampleYear03>
  <rr:FeeWaiverOrReimbursementOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978330" unitRef="pure" decimals="4" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1006_20">-0.0012</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:ExpenseExampleYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978330" unitRef="iso4217_USD" decimals="0" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1006_29">1166</rr:ExpenseExampleYear10>
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  <rr:ManagementFeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978330" unitRef="pure" decimals="4" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1006_15">0.0010</rr:ManagementFeesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978330" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1006_21">2013-12-31</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978330" unitRef="pure" decimals="2" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1006_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978330" unitRef="pure" decimals="4" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1006_16">0.0000</rr:DistributionAndService12b1FeesOverAssets>
  <rr:NetExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978330" unitRef="pure" decimals="4" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1006_22">0.0075</rr:NetExpensesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978330" unitRef="pure" decimals="4" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1006_19">0.0087</rr:ExpensesOverAssets>
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  <rr:AcquiredFundFeesAndExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978330" unitRef="pure" decimals="4" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1006_18">0.0041</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978330" unitRef="pure" decimals="4" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1006_10">0.0000</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978331" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1005_0">CTHEX</dei:TradingSymbol>
  <rr:RedemptionFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978331" unitRef="iso4217_USD" decimals="0" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1005_12">0</rr:RedemptionFee>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978331" unitRef="pure" decimals="4" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1005_9">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:ExpenseExampleYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978331" unitRef="iso4217_USD" decimals="0" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1005_26">141</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978331" unitRef="iso4217_USD" decimals="0" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1005_27">442</rr:ExpenseExampleYear03>
  <rr:FeeWaiverOrReimbursementOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978331" unitRef="pure" decimals="4" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1005_20">-0.0012</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:ExpenseExampleYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978331" unitRef="iso4217_USD" decimals="0" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1005_29">1670</rr:ExpenseExampleYear10>
  <rr:ExpenseExampleYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978331" unitRef="iso4217_USD" decimals="0" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1005_28">764</rr:ExpenseExampleYear05>
  <rr:OtherExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978331" unitRef="pure" decimals="4" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1005_17">0.0030</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978331" unitRef="pure" decimals="4" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1005_15">0.0010</rr:ManagementFeesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978331" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1005_21">2013-12-31</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978331" unitRef="pure" decimals="2" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1005_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978331" unitRef="pure" decimals="4" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1005_16">0.0050</rr:DistributionAndService12b1FeesOverAssets>
  <rr:NetExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978331" unitRef="pure" decimals="4" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1005_22">0.0119</rr:NetExpensesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978331" unitRef="pure" decimals="4" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1005_19">0.0131</rr:ExpensesOverAssets>
  <rr:MaximumAccountFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978331" unitRef="iso4217_USD" decimals="0" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1005_13">10</rr:MaximumAccountFee>
  <rr:AcquiredFundFeesAndExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978331" unitRef="pure" decimals="4" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1005_18">0.0041</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978331" unitRef="pure" decimals="4" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1005_10">0.0000</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978332" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1004_0">CTYCX</dei:TradingSymbol>
  <rr:RedemptionFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978332" unitRef="iso4217_USD" decimals="0" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1004_12">0</rr:RedemptionFee>
  <rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978332" unitRef="pure" decimals="4" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1004_9">0.0000</rr:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
  <rr:ExpenseExampleYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978332" unitRef="iso4217_USD" decimals="0" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1004_26">295</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleNoRedemptionYear01 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978332" unitRef="iso4217_USD" decimals="0" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1004_31">195</rr:ExpenseExampleNoRedemptionYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978332" unitRef="iso4217_USD" decimals="0" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1004_27">606</rr:ExpenseExampleYear03>
  <rr:FeeWaiverOrReimbursementOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978332" unitRef="pure" decimals="4" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1004_20">-0.0012</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:ExpenseExampleYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978332" unitRef="iso4217_USD" decimals="0" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1004_29">2247</rr:ExpenseExampleYear10>
  <rr:ExpenseExampleYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978332" unitRef="iso4217_USD" decimals="0" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1004_28">1041</rr:ExpenseExampleYear05>
  <rr:OtherExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978332" unitRef="pure" decimals="4" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1004_17">0.0033</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978332" unitRef="pure" decimals="4" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1004_15">0.0010</rr:ManagementFeesOverAssets>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978332" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1004_21">2013-12-31</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:ExpenseExampleNoRedemptionYear10 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978332" unitRef="iso4217_USD" decimals="0" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1004_34">2247</rr:ExpenseExampleNoRedemptionYear10>
  <rr:ExpenseExampleNoRedemptionYear03 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978332" unitRef="iso4217_USD" decimals="0" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1004_32">606</rr:ExpenseExampleNoRedemptionYear03>
  <rr:ExpenseExampleNoRedemptionYear05 contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978332" unitRef="iso4217_USD" decimals="0" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1004_33">1041</rr:ExpenseExampleNoRedemptionYear05>
  <rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978332" unitRef="pure" decimals="2" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1004_11">0.00</rr:MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978332" unitRef="pure" decimals="4" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1004_16">0.0100</rr:DistributionAndService12b1FeesOverAssets>
  <rr:NetExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978332" unitRef="pure" decimals="4" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1004_22">0.0172</rr:NetExpensesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978332" unitRef="pure" decimals="4" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1004_19">0.0184</rr:ExpensesOverAssets>
  <rr:MaximumAccountFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978332" unitRef="iso4217_USD" decimals="0" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1004_13">10</rr:MaximumAccountFee>
  <rr:AcquiredFundFeesAndExpensesOverAssets contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978332" unitRef="pure" decimals="4" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1004_18">0.0041</rr:AcquiredFundFeesAndExpensesOverAssets>
  <rr:MaximumDeferredSalesChargeOverOfferingPrice contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978332" unitRef="pure" decimals="4" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1004_10">0.0100</rr:MaximumDeferredSalesChargeOverOfferingPrice>
  <dei:TradingSymbol contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978333" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1003_0">CTHBX</dei:TradingSymbol>
  <rr:RedemptionFee contextRef="eol_0000051931-12-000971_STD_1_20130101_0_602228x-9978298_602238x-9978291_602488x-9978333" unitRef="iso4217_USD" decimals="0" id="id_716109_EC388CDC-67C5-40B8-960F-713B5B6369C0_1003_12">0</rr:RedemptionFee>
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