v3.25.4
Label Element Value
AMERICAN MUTUAL FUND  
Prospectus [Line Items] oef_ProspectusLineItems  
Risk/Return [Heading] oef_RiskReturnHeading American Mutual Fund
Objective [Heading] oef_ObjectiveHeading Investment objectives
Objective, Primary [Text Block] oef_ObjectivePrimaryTextBlock

The fund strives for the balanced accomplishment of three objectives: current income, growth of capital and conservation of principal.
Expense Heading [Optional Text] oef_ExpenseHeading Fees and expenses of the fund
Expense Narrative [Text Block] oef_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy, hold and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. For example, in addition to the fees and expenses described below, you may also be required to pay brokerage commissions on purchases and sales of Class F-2, F-3, 529-F-2 or 529-F-3 shares of the fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in American Funds, Capital Group KKR Public-Private+ Funds, and/or Emerging Markets Equities Fund, Inc. (collectively “Capital Group Funds”) ($250,000 for Class 529-A shares). More information about these and other discounts is available from your financial professional, in the “Sales charge reductions and waivers” sections on page 34 of the prospectus and on page 70 of the fund’s statement of additional information, and in the sales charge waiver appendix to the prospectus.
Shareholder Fees Caption [Optional Text] oef_ShareholderFeesCaption Shareholder fees (fees paid directly from your investment)
Operating Expenses Caption [Optional Text] oef_OperatingExpensesCaption Annual fund operating expenses (expenses that you pay each year as a percentage of the net asset value of your investment)
Expenses Deferred Charges [Text Block] oef_ExpensesDeferredChargesTextBlock A contingent deferred sales charge of 1.00% applies on certain redemptions made within 18 months following purchases of $1 million or more made without an initial sales charge. Contingent deferred sales charge is calculated based on the lesser of the offering price and market value of shares being sold.
Expense Breakpoint Discounts [Text] oef_ExpenseBreakpointDiscounts You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in American Funds, Capital Group KKR Public-Private+ Funds, and/or Emerging Markets Equities Fund, Inc. (collectively “Capital Group Funds”) ($250,000 for Class 529-A shares).
Expense Breakpoint, Minimum Investment Required [Amount] oef_ExpenseBreakpointMinimumInvestmentRequiredAmount $ 25,000
Expense Example [Heading] oef_ExpenseExampleHeading Example
Expense Example Narrative [Text Block] oef_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds.

The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem or hold all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the fund’s operating expenses remain the same. You may be required to pay brokerage commissions on your purchases and sales of Class F-2, F-3, 529-F-2 or 529-F-3 shares of the fund, which are not reflected in the example.

Expense Example by, Year, Caption [Text] oef_ExpenseExampleByYearCaption Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, No Redemption, By Year, Caption [Text] oef_ExpenseExampleNoRedemptionByYearCaption For the share classes listed to the right, you would pay the following if you did not redeem your shares:
Portfolio Turnover [Heading] oef_PortfolioTurnoverHeading Portfolio turnover
Portfolio Turnover [Text Block] oef_PortfolioTurnoverTextBlock

The fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the fund’s investment results. During the most recent fiscal year, the fund’s portfolio turnover rate was 30% of the average value of its portfolio.
Portfolio Turnover, Rate oef_PortfolioTurnoverRate 30.00%
Strategy [Heading] oef_StrategyHeading Principal investment strategies
Strategy Narrative [Text Block] oef_StrategyNarrativeTextBlock

The fund seeks to invest primarily in common stocks of companies that are likely to participate in the growth of the American economy and whose dividends appear to be sustainable. The fund invests primarily in the United States and Canada.

The fund’s equity investments are limited to securities of companies that are included on its eligible list. When determining whether to include a security on the eligible list, the investment adviser principally considers whether a company is deemed to have a strong balance sheet and sustainable dividend payment prospects. Although the fund focuses on investments in medium to larger capitalization companies, the fund’s investments are not limited to a particular capitalization size.

The fund may also invest in bonds and other debt securities, including those issued by the U.S. government and by federal agencies and instrumentalities. Debt securities purchased by the fund are rated investment grade or better or determined by the fund’s investment adviser to be of equivalent quality.

The investment adviser uses a system of multiple portfolio managers in managing the fund’s assets. Under this approach, the portfolio of the fund is divided into segments managed by individual managers.

The fund relies on the professional judgment of its investment adviser to make decisions about the fund’s portfolio investments. The basic investment philosophy of the investment adviser is to seek to invest in attractively valued companies that, in its opinion, represent good, long-term investment opportunities. Securities may be sold when the investment adviser believes that they no longer represent relatively attractive investment opportunities.
Bar Chart and Performance Table [Heading] oef_BarChartAndPerformanceTableHeading Investment results
Performance Narrative [Text Block] oef_PerformanceNarrativeTextBlock

The following bar chart shows how the fund’s investment results have varied from year to year, and the following table shows how the fund’s average annual total returns for various periods compare with a broad measure of securities market results and, if applicable, other measures of market results that reflect the fund’s investment universe. This information provides some indication of the risks of investing in the fund. Past investment results (before and after taxes) are not predictive of future investment results. Prior to October 30, 2020, certain fees, such as 12b-1 fees, were not charged on Class 529-F-1 shares. If these expenses had been deducted, results would have been lower. Updated information on the fund’s investment results can be obtained by visiting capitalgroup.com.
Performance Information Illustrates Variability of Returns [Text] oef_PerformanceInformationIllustratesVariabilityOfReturns The following bar chart shows how the fund’s investment results have varied from year to year, and the following table shows how the fund’s average annual total returns for various periods compare with a broad measure of securities market results and, if applicable, other measures of market results that reflect the fund’s investment universe.
Performance Availability Website Address [Text] oef_PerformanceAvailabilityWebSiteAddress capitalgroup.com
Performance Past Does Not Indicate Future [Text] oef_PerformancePastDoesNotIndicateFuture Past investment results (before and after taxes) are not predictive of future investment results.
Bar Chart [Heading] oef_BarChartHeading Calendar year total returns for Class F-2 shares (Class F-2 shares are not subject to sales charges.)
Bar Chart Narrative [Text Block] oef_BarChartNarrativeTextBlock

The following bar chart shows how the fund’s investment results have varied from year to year, and the following table shows how the fund’s average annual total returns for various periods compare with a broad measure of securities market results and, if applicable, other measures of market results that reflect the fund’s investment universe.
Bar Chart Does Not Reflect Sales Loads [Text] oef_BarChartDoesNotReflectSalesLoads (Class F-2 shares are not subject to sales charges.)
Bar Chart Closing [Text Block] oef_BarChartClosingTextBlock

Highest/Lowest quarterly results during this period were:

Highest 13.00% (quarter ended June 30, 2020)

Lowest -18.18% (quarter ended March 31, 2020)

The fund's total return for the nine months ended September 30, 2025, was 14.40%.
Year to Date Return, Label [Optional Text] oef_YearToDateReturnLabel The fund's total return for the nine months ended
Bar Chart, Year to Date Return, Date oef_BarChartYearToDateReturnDate Sep. 30, 2025
Bar Chart, Year to Date Return oef_BarChartYearToDateReturn 14.40%
Highest Quarterly Return, Label [Optional Text] oef_HighestQuarterlyReturnLabel Highest
Highest Quarterly Return, Date oef_BarChartHighestQuarterlyReturnDate Jun. 30, 2020
Highest Quarterly Return oef_BarChartHighestQuarterlyReturn 13.00%
Lowest Quarterly Return, Label [Optional Text] oef_LowestQuarterlyReturnLabel Lowest
Lowest Quarterly Return, Date oef_BarChartLowestQuarterlyReturnDate Mar. 31, 2020
Lowest Quarterly Return oef_BarChartLowestQuarterlyReturn (18.18%)
Performance Table Uses Highest Federal Rate oef_PerformanceTableUsesHighestFederalRate After-tax returns are calculated using the highest individual federal income tax rates in effect during each year of the periods shown and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred oef_PerformanceTableNotRelevantToTaxDeferred Your actual after-tax returns depend on your individual tax situation and likely will differ from the results shown above. In addition, after-tax returns are not relevant if you hold your fund shares through a tax-favored arrangement, such as a 401(k) plan, individual retirement account (IRA) or 529 college savings plan.
Performance Table One Class of after Tax Shown [Text] oef_PerformanceTableOneClassOfAfterTaxShown After-tax returns are shown only for Class F-2 shares; after-tax returns for other share classes will vary.
Performance Table Closing [Text Block] oef_PerformanceTableClosingTextBlock

After-tax returns are shown only for Class F-2 shares; after-tax returns for other share classes will vary. After-tax returns are calculated using the highest individual federal income tax rates in effect during each year of the periods shown and do not reflect the impact of state and local taxes. Your actual after-tax returns depend on your individual tax situation and likely will differ from the results shown above. In addition, after-tax returns are not relevant if you hold your fund shares through a tax-favored arrangement, such as a 401(k) plan, individual retirement account (IRA) or 529 college savings plan.
Average Annual Return, Caption [Optional Text] oef_AverageAnnualReturnCaption Average annual total returns For the periods ended December 31, 2024:
Thirty Day Yield Caption [Optional Text] oef_ThirtyDayYieldCaption Class F-2 annualized 30-day yield at October 31, 2025:
Thirty Day Yield Phone oef_ThirtyDayYieldPhone (800) 421-4225
Thirty Day Yield oef_ThirtyDayYield 1.75%
AMERICAN MUTUAL FUND | Risk Lose Money [Member]  
Prospectus [Line Items] oef_ProspectusLineItems  
Risk [Text Block] oef_RiskTextBlock You may lose money by investing in the fund.
AMERICAN MUTUAL FUND | Risk Not Insured Depository Institution [Member]  
Prospectus [Line Items] oef_ProspectusLineItems  
Risk [Text Block] oef_RiskTextBlock 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.
AMERICAN MUTUAL FUND | Market conditions [Member]  
Prospectus [Line Items] oef_ProspectusLineItems  
Risk [Text Block] oef_RiskTextBlock

Market conditions — The prices of, and the income generated by, the common stocks and other securities held by the fund may decline – sometimes rapidly or unpredictably – due to various factors, including events or conditions affecting the general economy or particular industries or companies; overall market changes; local, regional or global political, social or economic instability; governmental, governmental agency or central bank responses to economic conditions; levels of public debt and deficits; changes in inflation rates; and currency exchange rate, interest rate and commodity price fluctuations. These risks may be heightened in the case of smaller capitalization stocks.

Economies and financial markets throughout the world are highly interconnected. Economic, financial or political events, trading and tariff arrangements, wars, terrorism, cybersecurity events, natural disasters, public health emergencies (such as the spread of infectious disease), bank failures and other circumstances in one country or region, including actions taken by governmental or quasi-governmental authorities in response to any of the foregoing, could have impacts on global economies or markets. As a result, whether or not the fund invests in securities of issuers located in or with significant exposure to the countries affected, the value and liquidity of the fund’s investments may be negatively affected by developments in other countries and regions.
AMERICAN MUTUAL FUND | Issuer risks [Member]  
Prospectus [Line Items] oef_ProspectusLineItems  
Risk [Text Block] oef_RiskTextBlock

Issuer risks — The prices of, and the income generated by, securities held by the fund may decline in response to various factors directly related to the issuers of such securities, including reduced demand for an issuer’s goods or services, poor management performance, major litigation, investigations or other controversies related to the issuer, changes in the issuer’s financial condition or credit rating, changes in government regulations affecting the issuer or its competitive environment and strategic initiatives such as mergers, acquisitions or dispositions and the market response to any such initiatives. An individual security may also be affected by factors relating to the industry or sector of the issuer or the securities markets as a whole, and conversely an industry or sector or the securities markets may be affected by a change in financial condition or other event affecting a single issuer.
AMERICAN MUTUAL FUND | Investing in growth-oriented stocks [Member]  
Prospectus [Line Items] oef_ProspectusLineItems  
Risk [Text Block] oef_RiskTextBlock

Investing in growth-oriented stocks — Growth-oriented common stocks and other equity-type securities (such as preferred stocks, convertible preferred stocks and convertible bonds) may involve larger price swings and greater potential for loss than other types of investments.
AMERICAN MUTUAL FUND | Investing in income-oriented stocks [Member]  
Prospectus [Line Items] oef_ProspectusLineItems  
Risk [Text Block] oef_RiskTextBlock

Investing in income-oriented stocks — The value of the fund’s securities and income provided by the fund may be reduced by changes in the dividend policies of, and the capital resources available for dividend payments at, the companies in which the fund invests.
AMERICAN MUTUAL FUND | Investing in debt instruments [Member]  
Prospectus [Line Items] oef_ProspectusLineItems  
Risk [Text Block] oef_RiskTextBlock

Investing in debt instruments — The prices of, and the income generated by, bonds and other debt securities held by the fund may be affected by factors such as the interest rates, maturities and credit quality of these securities.

Rising interest rates will generally cause the prices of bonds and other debt securities to fall. Also, when interest rates rise, issuers of debt securities that may be prepaid at any time, such as mortgage- or other asset-backed securities, are less likely to refinance

existing debt securities, causing the average life of such securities to extend. A general change in interest rates may cause investors to sell debt securities on a large scale, which could also adversely affect the price and liquidity of debt securities and could also result in increased redemptions from the fund. Falling interest rates may cause an issuer to redeem, call or refinance a debt security before its stated maturity, which may result in the fund having to reinvest the proceeds in lower yielding securities. Longer maturity debt securities generally have greater sensitivity to changes in interest rates and may be subject to greater price fluctuations than shorter maturity debt securities.

Bonds and other debt securities are also subject to credit risk, which is the possibility that the credit strength of an issuer or guarantor will weaken or be perceived to be weaker, and/or an issuer of a debt security will fail to make timely payments of principal or interest and the security will go into default. Changes in actual or perceived creditworthiness may occur quickly. A downgrade or default affecting any of the fund’s securities could cause the value of the fund’s shares to decrease. Lower quality debt securities generally have higher rates of interest and may be subject to greater price fluctuations than higher quality debt securities. Credit risk is gauged, in part, by the credit ratings of the debt securities in which the fund invests. However, ratings are only the opinions of the rating agencies issuing them and are not guarantees as to credit quality or an evaluation of market risk. The fund’s investment adviser relies on its own credit analysts to research issuers and issues in assessing credit and default risks.
AMERICAN MUTUAL FUND | Management [Member]  
Prospectus [Line Items] oef_ProspectusLineItems  
Risk [Text Block] oef_RiskTextBlock

Management — The investment adviser to the fund actively manages the fund’s investments. Consequently, the fund is subject to the risk that the methods and analyses, including models, tools and data, employed by the investment adviser in this process may be flawed or incorrect and may not produce the desired results. This could cause the fund to lose value or its investment results to lag relevant benchmarks or other funds with similar objectives.
AMERICAN MUTUAL FUND | Class A  
Prospectus [Line Items] oef_ProspectusLineItems  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) oef_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 5.75%
Maximum Deferred Sales Charge (as a percentage of Offering Price) oef_MaximumDeferredSalesChargeOverOfferingPrice 1.00% [1]
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) oef_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther 0.00%
Redemption Fee (as a percentage of Amount Redeemed) oef_RedemptionFeeOverRedemption 0.00%
Management Fees (as a percentage of Assets) oef_ManagementFeesOverAssets 0.23%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.09%
Expenses (as a percentage of Assets) oef_ExpensesOverAssets 0.57%
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 630
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 747
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 875
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 1,248
AMERICAN MUTUAL FUND | Class R-1  
Prospectus [Line Items] oef_ProspectusLineItems  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) oef_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) oef_MaximumDeferredSalesChargeOverOfferingPrice 0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) oef_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther 0.00%
Redemption Fee (as a percentage of Amount Redeemed) oef_RedemptionFeeOverRedemption 0.00%
Management Fees (as a percentage of Assets) oef_ManagementFeesOverAssets 0.23%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 1.00%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.13%
Expenses (as a percentage of Assets) oef_ExpensesOverAssets 1.36%
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 138
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 431
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 745
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 1,635
AMERICAN MUTUAL FUND | Class R-2  
Prospectus [Line Items] oef_ProspectusLineItems  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) oef_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) oef_MaximumDeferredSalesChargeOverOfferingPrice 0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) oef_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther 0.00%
Redemption Fee (as a percentage of Amount Redeemed) oef_RedemptionFeeOverRedemption 0.00%
Management Fees (as a percentage of Assets) oef_ManagementFeesOverAssets 0.23%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 0.75%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.37%
Expenses (as a percentage of Assets) oef_ExpensesOverAssets 1.35%
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 137
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 428
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 739
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 1,624
AMERICAN MUTUAL FUND | Class R-3  
Prospectus [Line Items] oef_ProspectusLineItems  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) oef_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) oef_MaximumDeferredSalesChargeOverOfferingPrice 0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) oef_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther 0.00%
Redemption Fee (as a percentage of Amount Redeemed) oef_RedemptionFeeOverRedemption 0.00%
Management Fees (as a percentage of Assets) oef_ManagementFeesOverAssets 0.23%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 0.50%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.18%
Expenses (as a percentage of Assets) oef_ExpensesOverAssets 0.91%
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 93
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 290
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 504
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 1,120
AMERICAN MUTUAL FUND | Class R-4  
Prospectus [Line Items] oef_ProspectusLineItems  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) oef_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) oef_MaximumDeferredSalesChargeOverOfferingPrice 0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) oef_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther 0.00%
Redemption Fee (as a percentage of Amount Redeemed) oef_RedemptionFeeOverRedemption 0.00%
Management Fees (as a percentage of Assets) oef_ManagementFeesOverAssets 0.23%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.14%
Expenses (as a percentage of Assets) oef_ExpensesOverAssets 0.62%
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 63
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 199
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 346
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 774
AMERICAN MUTUAL FUND | Class R-5  
Prospectus [Line Items] oef_ProspectusLineItems  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) oef_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) oef_MaximumDeferredSalesChargeOverOfferingPrice 0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) oef_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther 0.00%
Redemption Fee (as a percentage of Amount Redeemed) oef_RedemptionFeeOverRedemption 0.00%
Management Fees (as a percentage of Assets) oef_ManagementFeesOverAssets 0.23%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 0.00%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.09%
Expenses (as a percentage of Assets) oef_ExpensesOverAssets 0.32%
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 33
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 103
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 180
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 406
AMERICAN MUTUAL FUND | Class C  
Prospectus [Line Items] oef_ProspectusLineItems  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) oef_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) oef_MaximumDeferredSalesChargeOverOfferingPrice 1.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) oef_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther 0.00%
Redemption Fee (as a percentage of Amount Redeemed) oef_RedemptionFeeOverRedemption 0.00%
Management Fees (as a percentage of Assets) oef_ManagementFeesOverAssets 0.23%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 1.00%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.10%
Expenses (as a percentage of Assets) oef_ExpensesOverAssets 1.33%
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 235
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 421
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 729
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 1,392
Expense Example, No Redemption, 1 Year oef_ExpenseExampleNoRedemptionYear01 135
Expense Example, No Redemption, 3 Years oef_ExpenseExampleNoRedemptionYear03 421
Expense Example, No Redemption, 5 Years oef_ExpenseExampleNoRedemptionYear05 729
Expense Example, No Redemption, 10 Years oef_ExpenseExampleNoRedemptionYear10 $ 1,392
AMERICAN MUTUAL FUND | Class F-1  
Prospectus [Line Items] oef_ProspectusLineItems  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) oef_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) oef_MaximumDeferredSalesChargeOverOfferingPrice 0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) oef_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther 0.00%
Redemption Fee (as a percentage of Amount Redeemed) oef_RedemptionFeeOverRedemption 0.00%
Management Fees (as a percentage of Assets) oef_ManagementFeesOverAssets 0.23%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.16%
Expenses (as a percentage of Assets) oef_ExpensesOverAssets 0.64%
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 65
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 205
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 357
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 798
AMERICAN MUTUAL FUND | Class 529-A  
Prospectus [Line Items] oef_ProspectusLineItems  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) oef_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 3.50%
Maximum Deferred Sales Charge (as a percentage of Offering Price) oef_MaximumDeferredSalesChargeOverOfferingPrice 1.00% [1]
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) oef_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther 0.00%
Redemption Fee (as a percentage of Amount Redeemed) oef_RedemptionFeeOverRedemption 0.00%
Management Fees (as a percentage of Assets) oef_ManagementFeesOverAssets 0.23%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 0.23%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.14%
Expenses (as a percentage of Assets) oef_ExpensesOverAssets 0.60%
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 409
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 535
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 673
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 1,074
AMERICAN MUTUAL FUND | Class 529-C  
Prospectus [Line Items] oef_ProspectusLineItems  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) oef_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) oef_MaximumDeferredSalesChargeOverOfferingPrice 1.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) oef_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther 0.00%
Redemption Fee (as a percentage of Amount Redeemed) oef_RedemptionFeeOverRedemption 0.00%
Management Fees (as a percentage of Assets) oef_ManagementFeesOverAssets 0.23%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 1.00%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.14%
Expenses (as a percentage of Assets) oef_ExpensesOverAssets 1.37%
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 239
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 434
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 750
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 1,150
Expense Example, No Redemption, 1 Year oef_ExpenseExampleNoRedemptionYear01 139
Expense Example, No Redemption, 3 Years oef_ExpenseExampleNoRedemptionYear03 434
Expense Example, No Redemption, 5 Years oef_ExpenseExampleNoRedemptionYear05 750
Expense Example, No Redemption, 10 Years oef_ExpenseExampleNoRedemptionYear10 $ 1,150
AMERICAN MUTUAL FUND | Class 529-E  
Prospectus [Line Items] oef_ProspectusLineItems  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) oef_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) oef_MaximumDeferredSalesChargeOverOfferingPrice 0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) oef_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther 0.00%
Redemption Fee (as a percentage of Amount Redeemed) oef_RedemptionFeeOverRedemption 0.00%
Management Fees (as a percentage of Assets) oef_ManagementFeesOverAssets 0.23%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 0.50%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.12%
Expenses (as a percentage of Assets) oef_ExpensesOverAssets 0.85%
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 87
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 271
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 471
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 1,049
AMERICAN MUTUAL FUND | Class 529-F-1  
Prospectus [Line Items] oef_ProspectusLineItems  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) oef_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) oef_MaximumDeferredSalesChargeOverOfferingPrice 0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) oef_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther 0.00%
Redemption Fee (as a percentage of Amount Redeemed) oef_RedemptionFeeOverRedemption 0.00%
Management Fees (as a percentage of Assets) oef_ManagementFeesOverAssets 0.23%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.21%
Expenses (as a percentage of Assets) oef_ExpensesOverAssets 0.69%
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 70
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 221
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 384
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 859
AMERICAN MUTUAL FUND | Class F-2  
Prospectus [Line Items] oef_ProspectusLineItems  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) oef_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) oef_MaximumDeferredSalesChargeOverOfferingPrice 0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) oef_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther 0.00%
Redemption Fee (as a percentage of Amount Redeemed) oef_RedemptionFeeOverRedemption 0.00%
Management Fees (as a percentage of Assets) oef_ManagementFeesOverAssets 0.23%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 0.00%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.15%
Expenses (as a percentage of Assets) oef_ExpensesOverAssets 0.38%
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 39
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 122
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 213
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 480
AMERICAN MUTUAL FUND | Class R-6  
Prospectus [Line Items] oef_ProspectusLineItems  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) oef_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) oef_MaximumDeferredSalesChargeOverOfferingPrice 0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) oef_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther 0.00%
Redemption Fee (as a percentage of Amount Redeemed) oef_RedemptionFeeOverRedemption 0.00%
Management Fees (as a percentage of Assets) oef_ManagementFeesOverAssets 0.23%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 0.00%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.04%
Expenses (as a percentage of Assets) oef_ExpensesOverAssets 0.27%
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 28
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 87
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 152
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 343
AMERICAN MUTUAL FUND | Class R-2E  
Prospectus [Line Items] oef_ProspectusLineItems  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) oef_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) oef_MaximumDeferredSalesChargeOverOfferingPrice 0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) oef_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther 0.00%
Redemption Fee (as a percentage of Amount Redeemed) oef_RedemptionFeeOverRedemption 0.00%
Management Fees (as a percentage of Assets) oef_ManagementFeesOverAssets 0.23%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 0.60%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.24%
Expenses (as a percentage of Assets) oef_ExpensesOverAssets 1.07%
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 109
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 340
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 590
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 1,306
AMERICAN MUTUAL FUND | Class R-5E  
Prospectus [Line Items] oef_ProspectusLineItems  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) oef_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) oef_MaximumDeferredSalesChargeOverOfferingPrice 0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) oef_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther 0.00%
Redemption Fee (as a percentage of Amount Redeemed) oef_RedemptionFeeOverRedemption 0.00%
Management Fees (as a percentage of Assets) oef_ManagementFeesOverAssets 0.23%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 0.00%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.19%
Expenses (as a percentage of Assets) oef_ExpensesOverAssets 0.42%
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 43
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 135
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 235
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 530
AMERICAN MUTUAL FUND | Class F-3  
Prospectus [Line Items] oef_ProspectusLineItems  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) oef_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) oef_MaximumDeferredSalesChargeOverOfferingPrice 0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) oef_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther 0.00%
Redemption Fee (as a percentage of Amount Redeemed) oef_RedemptionFeeOverRedemption 0.00%
Management Fees (as a percentage of Assets) oef_ManagementFeesOverAssets 0.23%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 0.00%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.04%
Expenses (as a percentage of Assets) oef_ExpensesOverAssets 0.27%
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 28
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 87
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 152
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 343
AMERICAN MUTUAL FUND | Class 529-T  
Prospectus [Line Items] oef_ProspectusLineItems  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) oef_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 2.50%
Maximum Deferred Sales Charge (as a percentage of Offering Price) oef_MaximumDeferredSalesChargeOverOfferingPrice 0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) oef_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther 0.00%
Redemption Fee (as a percentage of Amount Redeemed) oef_RedemptionFeeOverRedemption 0.00%
Management Fees (as a percentage of Assets) oef_ManagementFeesOverAssets 0.23%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.14%
Expenses (as a percentage of Assets) oef_ExpensesOverAssets 0.62%
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 312
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 444
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 587
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 1,005
AMERICAN MUTUAL FUND | Class T  
Prospectus [Line Items] oef_ProspectusLineItems  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) oef_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 2.50%
Maximum Deferred Sales Charge (as a percentage of Offering Price) oef_MaximumDeferredSalesChargeOverOfferingPrice 0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) oef_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther 0.00%
Redemption Fee (as a percentage of Amount Redeemed) oef_RedemptionFeeOverRedemption 0.00%
Management Fees (as a percentage of Assets) oef_ManagementFeesOverAssets 0.23%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.09%
Expenses (as a percentage of Assets) oef_ExpensesOverAssets 0.57%
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 307
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 428
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 560
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 946
AMERICAN MUTUAL FUND | Class 529-F-2  
Prospectus [Line Items] oef_ProspectusLineItems  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) oef_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) oef_MaximumDeferredSalesChargeOverOfferingPrice 0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) oef_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther 0.00%
Redemption Fee (as a percentage of Amount Redeemed) oef_RedemptionFeeOverRedemption 0.00%
Management Fees (as a percentage of Assets) oef_ManagementFeesOverAssets 0.23%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 0.00%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.13%
Expenses (as a percentage of Assets) oef_ExpensesOverAssets 0.36%
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 37
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 116
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 202
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 456
AMERICAN MUTUAL FUND | Class 529-F-3  
Prospectus [Line Items] oef_ProspectusLineItems  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) oef_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) oef_MaximumDeferredSalesChargeOverOfferingPrice 0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) oef_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther 0.00%
Redemption Fee (as a percentage of Amount Redeemed) oef_RedemptionFeeOverRedemption 0.00%
Management Fees (as a percentage of Assets) oef_ManagementFeesOverAssets 0.23%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 0.00%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.09%
Expenses (as a percentage of Assets) oef_ExpensesOverAssets 0.32%
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 33
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 103
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 180
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 406
S&P 500 Index (reflects no deductions for sales charges, account fees, expenses or U.S. federal income taxes)  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 25.02%
Average Annual Return, Percent oef_AvgAnnlRtrPct 14.53%
Average Annual Return, Percent oef_AvgAnnlRtrPct 13.10%
Average Annual Return, Percent oef_AvgAnnlRtrPct 11.90%
Class A  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 8.33%
Average Annual Return, Percent oef_AvgAnnlRtrPct 8.18%
Average Annual Return, Percent oef_AvgAnnlRtrPct 8.71%
Average Annual Return, Percent oef_AvgAnnlRtrPct 11.38%
Performance Inception Date oef_PerfInceptionDate Feb. 21, 1950
Class R-1  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 14.06%
Average Annual Return, Percent oef_AvgAnnlRtrPct 8.62%
Average Annual Return, Percent oef_AvgAnnlRtrPct 8.48%
Average Annual Return, Percent oef_AvgAnnlRtrPct 7.58%
Performance Inception Date oef_PerfInceptionDate Jun. 11, 2002
Class R-2  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 14.09%
Average Annual Return, Percent oef_AvgAnnlRtrPct 8.63%
Average Annual Return, Percent oef_AvgAnnlRtrPct 8.50%
Average Annual Return, Percent oef_AvgAnnlRtrPct 7.41%
Performance Inception Date oef_PerfInceptionDate May 31, 2002
Class R-3  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 14.57%
Average Annual Return, Percent oef_AvgAnnlRtrPct 9.10%
Average Annual Return, Percent oef_AvgAnnlRtrPct 8.98%
Average Annual Return, Percent oef_AvgAnnlRtrPct 8.04%
Performance Inception Date oef_PerfInceptionDate Jun. 06, 2002
Class R-4  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 14.92%
Average Annual Return, Percent oef_AvgAnnlRtrPct 9.43%
Average Annual Return, Percent oef_AvgAnnlRtrPct 9.31%
Average Annual Return, Percent oef_AvgAnnlRtrPct 8.53%
Performance Inception Date oef_PerfInceptionDate Jun. 27, 2002
Class R-5  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 15.26%
Average Annual Return, Percent oef_AvgAnnlRtrPct 9.76%
Average Annual Return, Percent oef_AvgAnnlRtrPct 9.64%
Average Annual Return, Percent oef_AvgAnnlRtrPct 8.49%
Performance Inception Date oef_PerfInceptionDate May 15, 2002
Class C  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 13.11%
Average Annual Return, Percent oef_AvgAnnlRtrPct 8.65%
Average Annual Return, Percent oef_AvgAnnlRtrPct 8.69%
Average Annual Return, Percent oef_AvgAnnlRtrPct 7.96%
Performance Inception Date oef_PerfInceptionDate Mar. 15, 2001
Class F-1  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 14.89%
Average Annual Return, Percent oef_AvgAnnlRtrPct 9.41%
Average Annual Return, Percent oef_AvgAnnlRtrPct 9.29%
Average Annual Return, Percent oef_AvgAnnlRtrPct 8.19%
Performance Inception Date oef_PerfInceptionDate Mar. 15, 2001
Class 529-A  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 10.91%
Average Annual Return, Percent oef_AvgAnnlRtrPct 8.65%
Average Annual Return, Percent oef_AvgAnnlRtrPct 8.91%
Average Annual Return, Percent oef_AvgAnnlRtrPct 8.18%
Performance Inception Date oef_PerfInceptionDate Feb. 19, 2002
Class 529-C  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 13.06%
Average Annual Return, Percent oef_AvgAnnlRtrPct 8.60%
Average Annual Return, Percent oef_AvgAnnlRtrPct 8.88%
Average Annual Return, Percent oef_AvgAnnlRtrPct 8.10%
Performance Inception Date oef_PerfInceptionDate Feb. 20, 2002
Class 529-E  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 14.65%
Average Annual Return, Percent oef_AvgAnnlRtrPct 9.17%
Average Annual Return, Percent oef_AvgAnnlRtrPct 9.04%
Average Annual Return, Percent oef_AvgAnnlRtrPct 7.76%
Performance Inception Date oef_PerfInceptionDate Mar. 07, 2002
Class 529-F-1  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 15.13%
Average Annual Return, Percent oef_AvgAnnlRtrPct 9.63%
Average Annual Return, Percent oef_AvgAnnlRtrPct 9.52%
Average Annual Return, Percent oef_AvgAnnlRtrPct 9.31%
Performance Inception Date oef_PerfInceptionDate Sep. 17, 2002
Class F-2  
Prospectus [Line Items] oef_ProspectusLineItems  
Annual Return [Percent] oef_AnnlRtrPct (2.66%)
Annual Return [Percent] oef_AnnlRtrPct 14.38%
Annual Return [Percent] oef_AnnlRtrPct 17.87%
Annual Return [Percent] oef_AnnlRtrPct (1.88%)
Annual Return [Percent] oef_AnnlRtrPct 21.97%
Annual Return [Percent] oef_AnnlRtrPct 4.98%
Annual Return [Percent] oef_AnnlRtrPct 25.20%
Annual Return [Percent] oef_AnnlRtrPct (4.30%)
Annual Return [Percent] oef_AnnlRtrPct 9.61%
Annual Return [Percent] oef_AnnlRtrPct 15.20%
Average Annual Return, Percent oef_AvgAnnlRtrPct 15.20%
Average Annual Return, Percent oef_AvgAnnlRtrPct 9.69%
Average Annual Return, Percent oef_AvgAnnlRtrPct 9.57%
Average Annual Return, Percent oef_AvgAnnlRtrPct 9.74%
Performance Inception Date oef_PerfInceptionDate Aug. 05, 2008
Class F-2 | After Taxes on Distributions  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 13.52%
Average Annual Return, Percent oef_AvgAnnlRtrPct 8.53%
Average Annual Return, Percent oef_AvgAnnlRtrPct 8.24%
Class F-2 | After Taxes on Distributions and Sales  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 10.20%
Average Annual Return, Percent oef_AvgAnnlRtrPct 7.53%
Average Annual Return, Percent oef_AvgAnnlRtrPct 7.49%
Class R-6  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 15.30%
Average Annual Return, Percent oef_AvgAnnlRtrPct 9.81%
Average Annual Return, Percent oef_AvgAnnlRtrPct 9.69%
Average Annual Return, Percent oef_AvgAnnlRtrPct 12.32%
Performance Inception Date oef_PerfInceptionDate May 01, 2009
Class R-2E  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 14.39%
Average Annual Return, Percent oef_AvgAnnlRtrPct 8.94%
Average Annual Return, Percent oef_AvgAnnlRtrPct 8.83%
Average Annual Return, Percent oef_AvgAnnlRtrPct 8.98%
Performance Inception Date oef_PerfInceptionDate Aug. 29, 2014
Class R-5E  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 15.14%
Average Annual Return, Percent oef_AvgAnnlRtrPct 9.66%
Average Annual Return, Percent oef_AvgAnnlRtrPct 10.55%
Performance Inception Date oef_PerfInceptionDate Nov. 20, 2015
Class F-3  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 15.31%
Average Annual Return, Percent oef_AvgAnnlRtrPct 9.82%
Average Annual Return, Percent oef_AvgAnnlRtrPct 10.56%
Performance Inception Date oef_PerfInceptionDate Jan. 27, 2017
Class 529-F-2  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 15.23%
Average Annual Return, Percent oef_AvgAnnlRtrPct 13.43%
Performance Inception Date oef_PerfInceptionDate Oct. 30, 2020
Class 529-F-3  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 15.26%
Average Annual Return, Percent oef_AvgAnnlRtrPct 13.47%
Performance Inception Date oef_PerfInceptionDate Oct. 30, 2020
[1] A contingent deferred sales charge of 1.00% applies on certain redemptions made within 18 months following purchases of $1 million or more made without an initial sales charge. Contingent deferred sales charge is calculated based on the lesser of the offering price and market value of shares being sold.