v3.24.3
Label Element Value
AMERICAN HIGH INCOME TRUST  
Prospectus [Line Items] oef_ProspectusLineItems  
Risk/Return [Heading] oef_RiskReturnHeading American High-Income Trust
Objective [Heading] oef_ObjectiveHeading Investment objectives
Objective, Primary [Text Block] oef_ObjectivePrimaryTextBlock

The fund’s primary investment objective is to provide you with a high level of current income.

Objective, Secondary [Text Block] oef_ObjectiveSecondaryTextBlock Its secondary investment objective is capital appreciation.
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 $100,000 in American 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 38 of the prospectus and on page 83 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 value of your investment)
Expenses Deferred Charges [Text Block] oef_ExpensesDeferredChargesTextBlock A contingent deferred sales charge of 0.75% for Class A shares and 1.00% for Class 529-A shares applies on certain redemptions made within 18 months following purchases of $500,000 or more for Class A and $1 million or more for Class 529-A 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 $100,000 in American Funds ($250,000 for Class 529-A shares).
Expense Breakpoint, Minimum Investment Required [Amount] oef_ExpenseBreakpointMinimumInvestmentRequiredAmount $ 100,000
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 39% of the average value of its portfolio.
Portfolio Turnover, Rate oef_PortfolioTurnoverRate 39.00%
Strategy [Heading] oef_StrategyHeading Principal investment strategies
Strategy Narrative [Text Block] oef_StrategyNarrativeTextBlock

The fund invests primarily in higher yielding and generally lower quality debt securities (rated Ba1 / BB+ or below by Nationally Recognized Statistical Rating Organizations or unrated but determined by the fund’s investment adviser to be of equivalent quality), including corporate loan obligations. Such securities are sometimes referred to as “junk bonds.” The fund may also invest a portion of its assets in securities tied economically to countries outside the United States.

The fund may also invest in futures contracts and swaps, which are types of derivatives. A derivative is a financial contract, the value of which is based on the value of an underlying financial asset (such as a stock, bond or currency), a reference rate or a market index.

The fund is designed for investors seeking a high level of current income and who are able to tolerate greater credit risk and price fluctuations than those that exist in funds investing in higher quality debt securities.

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 priced securities 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 other applicable measures of market results. 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 other applicable measures of market results.
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 other applicable measures of market results.
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 8.65% (quarter ended June 30, 2020)

 

Lowest -12.76% (quarter ended March 31, 2020)

The fund's total return for the nine months ended September 30, 2024, was 9.36%.
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, 2024
Bar Chart, Year to Date Return oef_BarChartYearToDateReturn 9.36%
Highest Quarterly Return, Label [Optional Text] oef_HighestQuarterlyReturnLabel Highest
Highest Quarterly Return, Date oef_BarChartHighestQuarterlyReturnDate Jun. 30, 2020
Highest Quarterly Return oef_BarChartHighestQuarterlyReturn 8.65%
Lowest Quarterly Return, Label [Optional Text] oef_LowestQuarterlyReturnLabel Lowest
Lowest Quarterly Return, Date oef_BarChartLowestQuarterlyReturnDate Mar. 31, 2020
Lowest Quarterly Return oef_BarChartLowestQuarterlyReturn (12.76%)
Performance Table Market Index Changed oef_PerformanceTableMarketIndexChanged Effective July 24, 2024, the fund’s primary benchmark changed from the Bloomberg U.S. Corporate High Yield 2% Issuer Capped Index (“the Previous Primary Benchmark”) to the Bloomberg U.S. Aggregate Index, a broad-based index that represents the overall applicable securities market, as required by the U.S. Securities and Exchange Commission (“SEC”). The Previous Primary Benchmark provides a means to compare the fund’s results to a benchmark that the investment adviser believes is more representative of the fund’s investment universe. There is no change in the fund’s investment strategies as a result of the benchmark change.
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, 2023:
Thirty Day Yield Caption [Optional Text] oef_ThirtyDayYieldCaption Class F-2 annualized 30-day yield at September 30, 2024:
Thirty Day Yield Phone oef_ThirtyDayYieldPhone (800) 421-4225
Thirty Day Yield oef_ThirtyDayYield 6.62%
AMERICAN HIGH INCOME TRUST | Risk Lose Money [Member]  
Prospectus [Line Items] oef_ProspectusLineItems  
Risk [Text Block] oef_RiskTextBlock You may lose money by investing in the fund.
AMERICAN HIGH INCOME TRUST | Risk Not Insured [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 HIGH INCOME TRUST | Market conditions [Member]  
Prospectus [Line Items] oef_ProspectusLineItems  
Risk [Text Block] oef_RiskTextBlock Market conditions — The prices of, and the income generated by, the 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.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 HIGH INCOME TRUST | 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 HIGH INCOME TRUST | 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 HIGH INCOME TRUST | Investing in lower rated debt instruments [Member]  
Prospectus [Line Items] oef_ProspectusLineItems  
Risk [Text Block] oef_RiskTextBlock Investing in lower rated debt instruments — Lower rated bonds and other lower rated debt securities generally have higher rates of interest and involve greater risk of default or price declines due to changes in the issuer’s creditworthiness than those of higher quality debt securities. The market prices of these securities may fluctuate more than the prices of higher quality debt securities and may decline significantly in periods of general economic difficulty. These risks may be increased with respect to investments in junk bonds.
AMERICAN HIGH INCOME TRUST | Liquidity risk [Member]  
Prospectus [Line Items] oef_ProspectusLineItems  
Risk [Text Block] oef_RiskTextBlock Liquidity risk — Certain fund holdings may be or may become difficult or impossible to sell, particularly during times of market turmoil. Liquidity may be impacted by the lack of an active market for a holding, legal or contractual restrictions on resale, or the reduced number and capacity of market participants to make a market in such holding. Market prices for less liquid or illiquid holdings may be volatile or difficult to determine, and reduced liquidity may have an adverse impact on the market price of such holdings. Additionally, the sale of less liquid or illiquid holdings may involve substantial delays (including delays in settlement) and additional costs and the fund may be unable to sell such holdings when necessary to meet its liquidity needs or to try to limit losses, or may be forced to sell at a loss.
AMERICAN HIGH INCOME TRUST | Investing in derivatives [Member]  
Prospectus [Line Items] oef_ProspectusLineItems  
Risk [Text Block] oef_RiskTextBlock Investing in derivatives — The use of derivatives involves a variety of risks, which may be different from, or greater than, the risks associated with investing in traditional securities, such as stocks and bonds. Changes in the value of a derivative may not correlate perfectly with, and may be more sensitive to market events than, the underlying asset, rate or index, and a derivative instrument may cause the fund to lose significantly more than its initial investment. Derivatives may be difficult to value, difficult for the fund to buy or sell at an opportune time or price and difficult, or even impossible, to terminate or otherwise offset. The fund’s use of derivatives may result in losses to the fund, and investing in derivatives may reduce the fund’s returns and increase the fund’s price volatility. The fund’s counterparty to a derivative transaction (including, if applicable, the fund’s clearing broker, the derivatives exchange or the clearinghouse) may be unable or unwilling to honor its financial obligations in respect of the transaction. In certain cases, the fund may be hindered or delayed in exercising remedies against or closing out derivative instruments with a counterparty, which may result in additional losses. Derivatives are also subject to operational risk (such as documentation issues, settlement issues and systems failures) and legal risk (such as insufficient documentation, insufficient capacity or authority of a counterparty, and issues with the legality or enforceability of a contract).
AMERICAN HIGH INCOME TRUST | Investing outside the United States [Member]  
Prospectus [Line Items] oef_ProspectusLineItems  
Risk [Text Block] oef_RiskTextBlock Investing outside the United States — Securities of issuers domiciled outside the United States or with significant operations or revenues outside the United States, and securities tied economically to countries outside the United States, may lose value because of adverse political, social, economic or market developments (including social instability, regional conflicts, terrorism and war) in the countries or regions in which the issuers are domiciled, operate or generate revenue or to which the securities are tied economically. These securities may also lose value due to changes in foreign currency exchange rates against the U.S. dollar and/or currencies of other countries. Issuers of these securities may be more susceptible to actions of foreign governments, such as nationalization, currency blockage or the imposition of price controls, sanctions, or punitive taxes, each of which could adversely impact the value of these securities. Securities markets in certain countries may be more volatile and/or less liquid than those in the United States. Investments outside the United States may also be subject to different regulatory, legal, accounting, auditing, financial reporting and recordkeeping requirements, and may be more difficult to value, than those in the United States. In addition, the value of investments outside the United States may be reduced by foreign taxes, including foreign withholding taxes on interest and dividends. Further, there may be increased risks of delayed settlement of securities purchased or sold by the fund, which could impact the liquidity of the fund’s portfolio. The risks of investing outside the United States may be heightened in connection with investments in emerging markets.
AMERICAN HIGH INCOME TRUST | 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 HIGH INCOME TRUST | 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 0.28%
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 1.42%
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 145
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 449
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 776
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 1,702
AMERICAN HIGH INCOME TRUST | 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 0.28%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 0.75%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.38%
Expenses (as a percentage of Assets) oef_ExpensesOverAssets 1.41%
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 144
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 446
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 771
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 1,691
AMERICAN HIGH INCOME TRUST | 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 0.28%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 0.50%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.19%
Expenses (as a percentage of Assets) oef_ExpensesOverAssets 0.97%
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 99
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 309
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 536
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 1,190
AMERICAN HIGH INCOME TRUST | 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 0.28%
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 0.67%
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 68
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 214
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 373
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 835
AMERICAN HIGH INCOME TRUST | 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 0.28%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 0.00%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.10%
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 HIGH INCOME TRUST | 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 0.28%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 0.99%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.18%
Expenses (as a percentage of Assets) oef_ExpensesOverAssets 1.45%
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 248
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 459
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 792
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 1,537
Expense Example, No Redemption, 1 Year oef_ExpenseExampleNoRedemptionYear01 148
Expense Example, No Redemption, 3 Years oef_ExpenseExampleNoRedemptionYear03 459
Expense Example, No Redemption, 5 Years oef_ExpenseExampleNoRedemptionYear05 792
Expense Example, No Redemption, 10 Years oef_ExpenseExampleNoRedemptionYear10 $ 1,537
AMERICAN HIGH INCOME TRUST | 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 0.28%
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 0.74%
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 76
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 237
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 411
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 918
AMERICAN HIGH INCOME TRUST | 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 0.28%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 0.23%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.23%
Expenses (as a percentage of Assets) oef_ExpensesOverAssets 0.74%
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 423
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 578
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 747
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 1,236
AMERICAN HIGH INCOME TRUST | 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 0.28%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 0.99%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.23%
Expenses (as a percentage of Assets) oef_ExpensesOverAssets 1.50%
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 253
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 474
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 818
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 1,307
Expense Example, No Redemption, 1 Year oef_ExpenseExampleNoRedemptionYear01 153
Expense Example, No Redemption, 3 Years oef_ExpenseExampleNoRedemptionYear03 474
Expense Example, No Redemption, 5 Years oef_ExpenseExampleNoRedemptionYear05 818
Expense Example, No Redemption, 10 Years oef_ExpenseExampleNoRedemptionYear10 $ 1,307
AMERICAN HIGH INCOME TRUST | 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 0.28%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 0.50%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.15%
Expenses (as a percentage of Assets) oef_ExpensesOverAssets 0.93%
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 95
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 296
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 515
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 1,143
AMERICAN HIGH INCOME TRUST | 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 0.28%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.26%
Expenses (as a percentage of Assets) oef_ExpensesOverAssets 0.79%
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 81
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 252
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 439
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 978
AMERICAN HIGH INCOME TRUST | 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 0.28%
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 0.43%
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 44
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 138
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 241
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 542
AMERICAN HIGH INCOME TRUST | 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 0.28%
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 0.32%
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 HIGH INCOME TRUST | 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 0.28%
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 1.12%
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 114
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 356
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 617
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 1,363
AMERICAN HIGH INCOME TRUST | 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 0.28%
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 0.47%
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 48
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 151
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 263
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 591
AMERICAN HIGH INCOME TRUST | 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 0.28%
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 0.32%
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 HIGH INCOME TRUST | 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 0.28%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.22%
Expenses (as a percentage of Assets) oef_ExpensesOverAssets 0.75%
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 325
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 484
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 657
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 1,157
AMERICAN HIGH INCOME TRUST | 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 0.28%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 0.25%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.17%
Expenses (as a percentage of Assets) oef_ExpensesOverAssets 0.70%
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 320
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 468
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 630
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 1,099
AMERICAN HIGH INCOME TRUST | 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 0.28%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 0.00%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.10%
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 HIGH INCOME TRUST | 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 0.28%
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 0.43%
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 44
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 138
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 241
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 542
AMERICAN HIGH INCOME TRUST | Class A  
Prospectus [Line Items] oef_ProspectusLineItems  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) oef_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 3.75%
Maximum Deferred Sales Charge (as a percentage of Offering Price) oef_MaximumDeferredSalesChargeOverOfferingPrice 0.75% [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 0.28%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 0.26%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.18%
Expenses (as a percentage of Assets) oef_ExpensesOverAssets 0.72%
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 446
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 597
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 761
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 1,236
Bloomberg U.S. Aggregate 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 5.53% [2]
Average Annual Return, Percent oef_AvgAnnlRtrPct 1.10% [2]
Average Annual Return, Percent oef_AvgAnnlRtrPct 1.81% [2]
Average Annual Return, Percent oef_AvgAnnlRtrPct 2.88% [2]
Bloomberg U.S. Corporate High Yield 2% Issuer Capped 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 13.44% [2]
Average Annual Return, Percent oef_AvgAnnlRtrPct 5.35% [2]
Average Annual Return, Percent oef_AvgAnnlRtrPct 4.59% [2]
Average Annual Return, Percent oef_AvgAnnlRtrPct 7.03% [2]
Class R-1  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 11.28%
Average Annual Return, Percent oef_AvgAnnlRtrPct 4.91%
Average Annual Return, Percent oef_AvgAnnlRtrPct 3.31%
Average Annual Return, Percent oef_AvgAnnlRtrPct 6.01%
Performance Inception Date oef_PerfInceptionDate Jul. 11, 2002
Class R-2  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 11.29%
Average Annual Return, Percent oef_AvgAnnlRtrPct 4.93%
Average Annual Return, Percent oef_AvgAnnlRtrPct 3.32%
Average Annual Return, Percent oef_AvgAnnlRtrPct 5.68%
Performance Inception Date oef_PerfInceptionDate Jun. 18, 2002
Class R-3  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 11.77%
Average Annual Return, Percent oef_AvgAnnlRtrPct 5.40%
Average Annual Return, Percent oef_AvgAnnlRtrPct 3.79%
Average Annual Return, Percent oef_AvgAnnlRtrPct 6.22%
Performance Inception Date oef_PerfInceptionDate Jun. 21, 2002
Class R-4  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 12.11%
Average Annual Return, Percent oef_AvgAnnlRtrPct 5.72%
Average Annual Return, Percent oef_AvgAnnlRtrPct 4.11%
Average Annual Return, Percent oef_AvgAnnlRtrPct 6.84%
Performance Inception Date oef_PerfInceptionDate Jul. 19, 2002
Class R-5  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 12.43%
Average Annual Return, Percent oef_AvgAnnlRtrPct 6.03%
Average Annual Return, Percent oef_AvgAnnlRtrPct 4.42%
Average Annual Return, Percent oef_AvgAnnlRtrPct 6.58%
Performance Inception Date oef_PerfInceptionDate May 15, 2002
Class C  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 10.23%
Average Annual Return, Percent oef_AvgAnnlRtrPct 4.91%
Average Annual Return, Percent oef_AvgAnnlRtrPct 3.46%
Average Annual Return, Percent oef_AvgAnnlRtrPct 5.71%
Performance Inception Date oef_PerfInceptionDate Mar. 15, 2001
Class F-1  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 12.04%
Average Annual Return, Percent oef_AvgAnnlRtrPct 5.67%
Average Annual Return, Percent oef_AvgAnnlRtrPct 4.07%
Average Annual Return, Percent oef_AvgAnnlRtrPct 5.97%
Performance Inception Date oef_PerfInceptionDate Mar. 15, 2001
Class 529-A  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 8.09%
Average Annual Return, Percent oef_AvgAnnlRtrPct 4.90%
Average Annual Return, Percent oef_AvgAnnlRtrPct 3.67%
Average Annual Return, Percent oef_AvgAnnlRtrPct 6.05%
Performance Inception Date oef_PerfInceptionDate Feb. 19, 2002
Class 529-C  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 10.17%
Average Annual Return, Percent oef_AvgAnnlRtrPct 4.86%
Average Annual Return, Percent oef_AvgAnnlRtrPct 3.65%
Average Annual Return, Percent oef_AvgAnnlRtrPct 6.02%
Performance Inception Date oef_PerfInceptionDate Feb. 19, 2002
Class 529-E  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 11.81%
Average Annual Return, Percent oef_AvgAnnlRtrPct 5.46%
Average Annual Return, Percent oef_AvgAnnlRtrPct 3.84%
Average Annual Return, Percent oef_AvgAnnlRtrPct 5.87%
Performance Inception Date oef_PerfInceptionDate Mar. 15, 2002
Class 529-F-1  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 12.24%
Average Annual Return, Percent oef_AvgAnnlRtrPct 5.87%
Average Annual Return, Percent oef_AvgAnnlRtrPct 4.27%
Average Annual Return, Percent oef_AvgAnnlRtrPct 7.00%
Performance Inception Date oef_PerfInceptionDate Sep. 16, 2002
Class F-2  
Prospectus [Line Items] oef_ProspectusLineItems  
Annual Return [Percent] oef_AnnlRtrPct 0.75%
Annual Return [Percent] oef_AnnlRtrPct (7.22%)
Annual Return [Percent] oef_AnnlRtrPct 16.59%
Annual Return [Percent] oef_AnnlRtrPct 6.94%
Annual Return [Percent] oef_AnnlRtrPct (1.61%)
Annual Return [Percent] oef_AnnlRtrPct 12.12%
Annual Return [Percent] oef_AnnlRtrPct 7.29%
Annual Return [Percent] oef_AnnlRtrPct 8.61%
Annual Return [Percent] oef_AnnlRtrPct (8.93%)
Annual Return [Percent] oef_AnnlRtrPct 12.38%
Average Annual Return, Percent oef_AvgAnnlRtrPct 12.38%
Average Annual Return, Percent oef_AvgAnnlRtrPct 5.98%
Average Annual Return, Percent oef_AvgAnnlRtrPct 4.37%
Average Annual Return, Percent oef_AvgAnnlRtrPct 6.00%
Performance Inception Date oef_PerfInceptionDate Aug. 04, 2008
Class F-2 | After Taxes on Distributions  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 9.27%
Average Annual Return, Percent oef_AvgAnnlRtrPct 3.44%
Average Annual Return, Percent oef_AvgAnnlRtrPct 1.78%
Class F-2 | After Taxes on Distributions and Sales  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 7.23%
Average Annual Return, Percent oef_AvgAnnlRtrPct 3.49%
Average Annual Return, Percent oef_AvgAnnlRtrPct 2.14%
Class R-6  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 12.49%
Average Annual Return, Percent oef_AvgAnnlRtrPct 6.09%
Average Annual Return, Percent oef_AvgAnnlRtrPct 4.48%
Average Annual Return, Percent oef_AvgAnnlRtrPct 7.72%
Performance Inception Date oef_PerfInceptionDate May 01, 2009
Class R-2E  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 11.60%
Average Annual Return, Percent oef_AvgAnnlRtrPct 5.24%
Average Annual Return, Percent oef_AvgAnnlRtrPct 3.51%
Performance Inception Date oef_PerfInceptionDate Aug. 29, 2014
Class R-5E  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 12.33%
Average Annual Return, Percent oef_AvgAnnlRtrPct 5.93%
Average Annual Return, Percent oef_AvgAnnlRtrPct 5.88%
Performance Inception Date oef_PerfInceptionDate Nov. 20, 2015
Class F-3  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 12.50%
Average Annual Return, Percent oef_AvgAnnlRtrPct 6.09%
Average Annual Return, Percent oef_AvgAnnlRtrPct 4.92%
Performance Inception Date oef_PerfInceptionDate Jan. 27, 2017
Class 529-F-3  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 12.42%
Average Annual Return, Percent oef_AvgAnnlRtrPct 5.59%
Performance Inception Date oef_PerfInceptionDate Oct. 30, 2020
Class 529-F-2  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 12.39%
Average Annual Return, Percent oef_AvgAnnlRtrPct 5.55%
Performance Inception Date oef_PerfInceptionDate Oct. 30, 2020
Class A  
Prospectus [Line Items] oef_ProspectusLineItems  
Average Annual Return, Percent oef_AvgAnnlRtrPct 7.88%
Average Annual Return, Percent oef_AvgAnnlRtrPct 4.89%
Average Annual Return, Percent oef_AvgAnnlRtrPct 3.71%
Average Annual Return, Percent oef_AvgAnnlRtrPct 7.18%
Performance Inception Date oef_PerfInceptionDate Feb. 19, 1988
[1] A contingent deferred sales charge of 0.75% for Class A shares and 1.00% for Class 529-A shares applies on certain redemptions made within 18 months following purchases of $500,000 or more for Class A and $1 million or more for Class 529-A 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.
[2] Effective July 24, 2024, the fund’s primary benchmark changed from the Bloomberg U.S. Corporate High Yield 2% Issuer Capped Index (“the Previous Primary Benchmark”) to the Bloomberg U.S. Aggregate Index, a broad-based index that represents the overall applicable securities market, as required by the U.S. Securities and Exchange Commission (“SEC”). The Previous Primary Benchmark provides a means to compare the fund’s results to a benchmark that the investment adviser believes is more representative of the fund’s investment universe. There is no change in the fund’s investment strategies as a result of the benchmark change.