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Investment objective 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. 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 81 of the fund’s statement of additional information, and in the sales charge waiver appendix to the prospectus. Fees and expenses 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. 100000 Shareholder fees (fees paid directly from your investment) 0.0375 0.035 0 0 0 0.025 0.025 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0075 0.01 0.01 0.01 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment) 0.0024 0.0024 0.0024 0.0024 0.0024 0.0024 0.0024 0.0025 0.01 0.0025 0.0025 0 0 0.0023 0.0023 0.0023 0.0024 0.0016 0.0016 0.0004 0.0027 0.0072 0.0147 0.0073 0.0065 0.004 0.0028 0.0074 -0.0002 -0.0002 -0.0002 -0.0002 -0.0002 -0.0002 -0.0002 0.007 0.0145 0.0071 0.0063 0.0038 0.0026 0.0072 0.0024 0.0024 0.0024 0.0024 0.0024 0.0024 0.0024 0.01 0.005 0.0025 0.0025 0 0 0.01 0.0028 0.0021 0.0029 0.0022 0.002 0.001 0.0017 0.0152 0.0095 0.0078 0.0071 0.0044 0.0034 0.0141 -0.0002 -0.0002 -0.0002 -0.0002 -0.0002 -0.0002 -0.0002 0.015 0.0093 0.0076 0.0069 0.0042 0.0032 0.0139 0.0024 0.0024 0.0024 0.0024 0.0024 0.0024 0.0024 0.0075 0.006 0.005 0.0025 0 0 0 0.0039 0.0025 0.002 0.0015 0.002 0.0011 0.0004 0.0138 0.0109 0.0094 0.0064 0.0044 0.0035 0.0028 -0.0002 -0.0002 -0.0002 -0.0002 -0.0002 -0.0002 -0.0002 0.0136 0.0107 0.0092 0.0062 0.0042 0.0033 0.0026 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. 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. Restated to reflect current fees. 2024-11-01 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 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. The example reflects the fee waiver described above through the expiration date of such waiver and total annual fund operating expenses thereafter. 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. Example Although your actual costs may be higher or lower, based on these assumptions your costs would be: 444 248 321 64 39 27 421 253 95 326 70 43 33 142 595 463 476 206 126 88 576 478 301 491 225 139 107 444 759 801 644 360 222 155 745 827 524 671 393 244 189 769 1234 1552 1132 809 503 354 1234 1315 1165 1190 881 553 429 1689 For the share classes listed to the right, you would pay the following if you did not redeem your shares: 138 109 94 63 43 34 27 148 153 435 345 298 203 139 110 88 463 478 753 599 518 355 244 195 155 801 827 1656 1327 1153 796 553 441 354 1552 1315 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 1185% of the average value of its portfolio. Portfolio turnover 11.85 Normally at least 80% of the fund’s assets are invested in mortgage-related securities, including securities collateralized by mortgage loans and contracts for future delivery of such securities (such as to be announced contracts and mortgage dollar rolls). The fund invests primarily in mortgage-related securities that are sponsored or guaranteed by the U.S. government, such as securities issued by government-sponsored entities that are not backed by the full faith and credit of the U.S. government, and nongovernment mortgage-related securities that are rated in the Aaa or AAA rating category (by Nationally Recognized Statistical Rating Organizations designated by the fund’s investment adviser) or unrated but determined to be of equivalent quality by the fund’s investment adviser. The fund may also invest in debt issued by federal agencies. In the case of to be announced contracts, each contract for future delivery is normally of short duration. 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 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. Principal investment strategies Principal risks You may lose money by investing in the fund. Investing in mortgage-related and other asset-backed securities — Mortgage-related securities, such as mortgage-backed securities, and other asset-backed securities, include debt obligations that represent interests in pools of mortgages or other income-bearing assets, such as consumer loans or receivables. While such securities are subject to the risks associated with investments in debt instruments generally (for example, credit, extension and interest rate risks), they are also subject to other and different risks. Mortgage-backed and other asset-backed securities are subject to changes in the payment patterns of borrowers of the underlying debt, potentially increasing the volatility of the securities and the fund’s net asset value. When interest rates fall, borrowers are more likely to refinance or prepay their debt before its stated maturity. This may result in the fund having to reinvest the proceeds in lower yielding securities, effectively reducing the fund’s income. Conversely, if interest rates rise and borrowers repay their debt more slowly than expected, the time in which the mortgage-backed and other asset-backed securities are paid off could be extended, reducing the fund’s cash available for reinvestment in higher yielding securities. Mortgage-backed securities are also subject to the risk that underlying borrowers will be unable to meet their obligations and the value of property that secures the mortgages may decline in value and be insufficient, upon foreclosure, to repay the associated loans. Investments in asset-backed securities are subject to similar risks. 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; 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. 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. 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 which 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. 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. Investing in securities backed by the U.S. government — Securities backed by the U.S. Treasury or the full faith and credit of the U.S. government are guaranteed only as to the timely payment of interest and principal when held to maturity. Accordingly, the current market values for these securities will fluctuate with changes in interest rates and the credit rating of the U.S. government. Securities issued by U.S. government-sponsored entities and federal agencies and instrumentalities that are not backed by the full faith and credit of the U.S. government are neither issued nor guaranteed by the U.S. government. U.S. government securities are subject to market risk, interest rate risk and credit risk. Investing in future delivery contracts — The fund may enter into contracts, such as to-be-announced contracts and mortgage dollar rolls, that involve the fund selling mortgage-related securities and simultaneously contracting to repurchase similar securities for delivery at a future date at a predetermined price. This can increase the fund’s market exposure, and the market price of the securities that the fund contracts to repurchase could drop below their purchase price. While the fund can preserve and generate capital through the use of such contracts by, for example, realizing the difference between the sale price and the future purchase price, the income generated by the fund may be reduced by engaging in such transactions. In addition, these transactions increase the turnover rate of the fund. Investing in inflation-linked bonds — The values of inflation-linked bonds generally fluctuate in response to changes in real interest rates — i.e., rates of interest after factoring in inflation. A rise in real interest rates may cause the prices of inflation-linked securities to fall, while a decline in real interest rates may cause the prices to increase. Inflation-linked bonds may experience greater losses than other debt securities with similar durations when real interest rates rise faster than nominal interest rates. There can be no assurance that the value of an inflation-linked security will be directly correlated to changes in interest rates; for example, if interest rates rise for reasons other than inflation, the increase may not be reflected in the security’s inflation measure. Investing in inflation-linked bonds may also reduce the fund’s distributable income during periods of deflation. If prices for goods and services decline throughout the economy, the principal and income on inflation-linked securities may decline and result in losses to the fund. 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). 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. 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. 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. The Lipper Intermediate U.S. Government Funds Average includes mutual funds that disclose investment objectives and/or strategies reasonably comparable to those of the fund. The Lipper GNMA Funds Average includes funds that disclose investment objectives and/or strategies reasonably comparable to those of 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. Investment results 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. The Lipper Intermediate U.S. Government Funds Average includes mutual funds that disclose investment objectives and/or strategies reasonably comparable to those of the fund. The Lipper GNMA Funds Average includes funds that disclose investment objectives and/or strategies reasonably comparable to those of the fund. Past investment results (before and after taxes) are not predictive of future investment results. capitalgroup.com Average annual total returns For the periods ended December 31, 2022: 2010-11-01 2010-11-01 2010-11-01 2010-11-01 -0.0985 0.0035 0.011 0.0154 -0.106 -0.0064 0.0016 -0.0582 -0.0009 0.0046 2010-11-01 -0.1351 -0.007 0.0044 0.0097 2010-11-01 -0.116 -0.0069 0.0018 0.0076 2010-11-01 -0.1009 0.0007 0.0082 0.0128 2017-01-27 -0.0974 0.0045 0.0062 2010-11-01 -0.133 -0.0069 0.0039 0.0092 2010-11-01 -0.1166 -0.0074 0.0035 0.0089 2010-11-01 -0.1032 -0.002 0.0053 0.0098 2010-11-01 -0.099 0.0025 0.0099 0.0144 2020-10-30 -0.0987 -0.0465 2020-10-30 -0.0979 -0.0455 2010-11-01 -0.1068 -0.0069 0.0027 0.0071 2010-11-01 -0.1068 -0.0066 0.0007 0.0056 2014-08-29 -0.1036 -0.0032 0.0047 2010-11-01 -0.1027 -0.0025 0.0052 0.0099 2010-11-01 -0.1006 0.001 0.0087 0.0132 2015-11-20 -0.098 0.0029 0.0072 2010-11-01 -0.0979 0.0039 0.0114 0.0159 2010-11-01 -0.0974 0.0046 0.0121 0.0165 -0.1181 -0.0053 0.0074 0.0126 -0.1108 -0.0031 0.003 0.0082 -0.1077 -0.0076 0.001 0.0076 Class F-2 annualized 30-day yield at August 31, 2023 0.0456 (800) 421-4225 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. 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. ~ http://www.americanfunds.com/20231101/role/ScheduleShareholderFees20001 column dei_LegalEntityAxis compact ck0001496998_S000030190Member row primary compact * ~ ~ http://www.americanfunds.com/20231101/role/ScheduleAnnualFundOperatingExpenses20002 column dei_LegalEntityAxis compact ck0001496998_S000030190Member row primary compact * ~ ~ http://www.americanfunds.com/20231101/role/ScheduleExpenseExample20003 column dei_LegalEntityAxis compact ck0001496998_S000030190Member row primary compact * ~ ~ http://www.americanfunds.com/20231101/role/ScheduleExpenseExampleNoRedemption20004 column dei_LegalEntityAxis compact ck0001496998_S000030190Member row primary compact * ~ -0.0185 0.0542 0.0211 0.0221 0.0149 0.0086 0.0506 0.0690 -0.0036 -0.0985 ~ http://www.americanfunds.com/20231101/role/ScheduleAnnualTotalReturnsBarChart20005 column dei_LegalEntityAxis compact ck0001496998_S000030190Member row primary compact * ~ ~ http://www.americanfunds.com/20231101/role/ScheduleAverageAnnualReturnsTransposed20006 column dei_LegalEntityAxis compact ck0001496998_S000030190Member column rr_PerformanceMeasureAxis compact * row primary compact * ~ Calendar year total returns for Class F-2 shares (Class F-2 shares are not subject to sales charges.) 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. Highest 0.0441 2020-03-31 Lowest -0.0498 2022-09-30 The fund's total return for the nine months ended -0.0258 2023-09-30 Highest/Lowest quarterly results during this period were:   Highest 4.41% (quarter ended March 31, 2020)   Lowest -4.98% (quarter ended September 30, 2022)   The fund's total return for the nine months ended September 30, 2023, was -2.58%. (Class F-2 shares are not subject to sales charges.) false 2023-11-01 2023-08-31 485BPOS 0001496998 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. Restated to reflect current fees. The investment adviser is currently waiving a portion of its management fee. This waiver will be in effect through at least November 1, 2024. The adviser may elect at its discretion to extend, modify or terminate the waiver at that time.