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    <dei:EntityInvCompanyType contextRef="P10_01_2025To03_31_2026" id="ixv-22760">N-1A</dei:EntityInvCompanyType>
    <dei:EntityRegistrantName contextRef="P10_01_2025To03_31_2026" id="ixv-24065">American Funds U.S. Government Money Market Fund</dei:EntityRegistrantName>
    <dei:DocumentPeriodEndDate contextRef="P10_01_2025To03_31_2026" id="ixv-24066">2026-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName
      contextRef="P10_01_2025To03_31_2026_C000075886MemberoefClassAxis"
      id="ixv-71">American Funds&#xae; U.S. Government Money Market Fund</oef:FundName>
    <oef:ClassName
      contextRef="P10_01_2025To03_31_2026_C000075886MemberoefClassAxis"
      id="ixv-24067">Class A</oef:ClassName>
    <dei:TradingSymbol
      contextRef="P10_01_2025To03_31_2026_C000075886MemberoefClassAxis"
      id="ixv-24068">AFAXX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075886MemberoefClassAxis"
      id="ixv-78">This semi-annual shareholder report contains important information about American Funds U.S. Government Money Market Fund&lt;div style="white-space: nowrap; letter-spacing: 0px; top: 0px;display:inline;"&gt;&#160;&lt;/div&gt;(the "fund") for the period from October 1, 2025 to March 31, 2026.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual
      contextRef="P10_01_2025To03_31_2026_C000075886MemberoefClassAxis"
      id="ixv-24069">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075886MemberoefClassAxis"
      id="ixv-80">You can find additional information about the fund at &lt;div style="text-decoration-line: underline; font-family: &amp;quot;Times New Roman&amp;quot;; color: rgb(0, 95, 158); font-size: 10pt; letter-spacing: -0.05pt; line-height: 15pt; top: 0px;display:inline;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;capitalgroup.com/mutual-fund-literature-A&lt;/div&gt;&lt;/div&gt;. You can also request this information by contacting us at &lt;br/&gt;(800) 421-4225.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite
      contextRef="P10_01_2025To03_31_2026_C000075886MemberoefClassAxis"
      id="ixv-24070">capitalgroup.com/mutual-fund-literature-A</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber
      contextRef="P10_01_2025To03_31_2026_C000075886MemberoefClassAxis"
      id="ixv-24071">(800) 421-4225</oef:AddlInfoPhoneNumber>
    <oef:ExpensesTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075886MemberoefClassAxis"
      id="ixv-86">&lt;div style="margin-top: 0; letter-spacing: normal; text-transform: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 13pt; color: rgb(0, 0, 0); margin-bottom: 0;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 13pt; color: rgb(0, 95, 158);font-weight:bolder;display:inline;width:100%;"&gt;What were the fund costs for the last six months?&lt;/div&gt; (based on a hypothetical $10,000 investment)&lt;/div&gt;&lt;table style="text-align:start; break-inside: avoid; table-layout: auto; width: 100%; border-collapse: collapse; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt; margin-bottom: 3pt;"&gt;&lt;tr style="break-after: avoid; border-bottom-style: none; border-bottom-width: initial; break-inside: avoid-page; background-color: rgb(0, 95, 158); border-right-color: rgb(255, 255, 255); border-right-style: solid; border-right-width: 0.5pt; height: 19.008pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 126.9pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Share class&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 171.072pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 0px; font-size: 10pt; line-height: 10pt; width: 267.948pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: none;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs paid as a percentage of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: 20pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 126.9pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;Class A&lt;/td&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 10pt; line-height: 10pt; text-align: center; width: 171.072pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;26&lt;/td&gt;&lt;td style="break-inside: avoid-page; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 267.948pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; vertical-align: bottom;"&gt;0.51&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;div style=";display:inline;vertical-align: super;font-size:9.2px"&gt;*&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;div style="margin-top: 0; font-weight: normal; font-family: 'Arial'; font-size: 8pt; line-height: 8.5pt; color: rgb(0, 0, 0); margin-bottom: 4pt;"&gt;*Annualized.&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="P10_01_2025To03_31_2026_C000075886MemberoefClassAxis"
      decimals="0"
      id="ixv-24072"
      unitRef="Unit_USD">26</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="P10_01_2025To03_31_2026_C000075886MemberoefClassAxis"
      decimals="INF"
      id="Fact_8002258"
      unitRef="Unit_pure">0.0051</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075886MemberoefClassAxis"
      id="ixv-113">&lt;div style="text-transform: none; margin-bottom: 2.0016pt; font-family: 'Times New Roman'; font-weight: bold; font-size: 11pt; line-height: 11pt; letter-spacing: normal; color: rgb(0, 95, 158); margin-top: 18pt;"&gt;Key fund statistics&lt;/div&gt;&lt;table style="text-align:start; width: 100%; border-collapse: collapse; break-inside: avoid;"&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto; border-top-color: rgb(153, 153, 153); border-top-style: solid; border-top-width: 0.5pt;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Fund net assets (in millions)&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;35,411&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Total number of portfolio holdings&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;157&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="PAsOn03_31_2026_C000075886MemberoefClassAxis"
      decimals="-6"
      id="ixv-24074"
      unitRef="Unit_USD">35411000000</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="PAsOn03_31_2026_C000075886MemberoefClassAxis"
      decimals="0"
      id="ixv-24075"
      unitRef="Unit_Holding">157</oef:HoldingsCount>
    <oef:HoldingsTableTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075886MemberoefClassAxis"
      id="ixv-126">&lt;div style="padding-left: 10pt; margin-bottom: 7.5pt; padding-right: 0;"&gt;&lt;div style="border-bottom-width: initial; border-bottom-style: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 0, 0); margin-bottom: 2.0016pt; padding-bottom: 0; border-bottom-color: initial; padding-left: 27pt; margin-top: 18pt;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 95, 158); margin-top: 10pt; margin-bottom: 3pt; padding-bottom: 0; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;font-weight:bolder;display:inline;"&gt;Portfolio holdings by asset type&lt;/div&gt;&#160;(percent of net assets)&lt;/div&gt;&lt;/div&gt;&lt;div style="padding-left: 10pt; padding-right: 0;"&gt;&lt;table style="text-align:start; border-collapse: collapse; break-inside: avoid; margin-left: 27pt; width: 91%; margin-bottom: 10pt;"&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Short-term securities:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bills&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;44.78&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Federal agency bills &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;37.95&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Repurchase agreements&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;13.13&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Bonds, notes &amp;amp; other debt instruments:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bonds &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;6.37&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Other assets less liabilities&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; width: 40pt; padding-right: 0; padding-left: 0; line-height: 9pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt;(2.23&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;)&lt;/div&gt;&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Total&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: double; border-bottom-width: 2pt;"&gt;100.00&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075886MemberoefClassAxis_USTreasuryBillsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24076"
      unitRef="Unit_pure">0.4478</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075886MemberoefClassAxis_FederalAgencyBillsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24077"
      unitRef="Unit_pure">0.3795</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075886MemberoefClassAxis_RepurchaseAgreementsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24078"
      unitRef="Unit_pure">0.1313</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075886MemberoefClassAxis_USTreasuryBondsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24079"
      unitRef="Unit_pure">0.0637</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075886MemberoefClassAxis_OtherAssetsLessLiabilitiesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24080"
      unitRef="Unit_pure">-0.0223</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075886MemberoefClassAxis"
      decimals="INF"
      id="ixv-24081"
      unitRef="Unit_pure">1</oef:PctOfNav>
    <oef:FundName
      contextRef="P10_01_2025To03_31_2026_C000075895MemberoefClassAxis"
      id="ixv-190">American Funds&#xae; U.S. Government Money Market Fund</oef:FundName>
    <oef:ClassName
      contextRef="P10_01_2025To03_31_2026_C000075895MemberoefClassAxis"
      id="ixv-24082">Class C</oef:ClassName>
    <dei:TradingSymbol
      contextRef="P10_01_2025To03_31_2026_C000075895MemberoefClassAxis"
      id="ixv-24083">AFCXX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075895MemberoefClassAxis"
      id="ixv-24084">This semi-annual shareholder report contains important information about American Funds U.S. Government Money Market Fund (the "fund") for the period from October 1, 2025 to March 31, 2026.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual
      contextRef="P10_01_2025To03_31_2026_C000075895MemberoefClassAxis"
      id="ixv-24085">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075895MemberoefClassAxis"
      id="ixv-199">You can find additional information about the fund at &lt;div style="text-decoration-line: underline; font-family: &amp;quot;Times New Roman&amp;quot;; color: rgb(0, 95, 158); font-size: 10pt; letter-spacing: -0.05pt; line-height: 15pt; top: 0px;display:inline;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;capitalgroup.com/mutual-fund-literature-C&lt;/div&gt;&lt;/div&gt;. You can also request this information by &lt;div style="display:inline;"&gt;contacting&lt;/div&gt; us at &lt;br/&gt;(800) 421-4225.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite
      contextRef="P10_01_2025To03_31_2026_C000075895MemberoefClassAxis"
      id="ixv-24086">capitalgroup.com/mutual-fund-literature-C</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber
      contextRef="P10_01_2025To03_31_2026_C000075895MemberoefClassAxis"
      id="ixv-24087">(800) 421-4225</oef:AddlInfoPhoneNumber>
    <oef:ExpensesTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075895MemberoefClassAxis"
      id="ixv-205">&lt;div style="margin-bottom: 6pt;"&gt;&lt;div style="margin-top: 0; letter-spacing: normal; text-transform: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 13pt; color: rgb(0, 0, 0); margin-bottom: 0;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 13pt; color: rgb(0, 95, 158);font-weight:bolder;display:inline;width:100%;"&gt;What were the fund costs for the last six months?&lt;/div&gt; (based on a hypothetical $10,000 investment)&lt;/div&gt;&lt;/div&gt;&lt;div style="margin-bottom: 4pt;"&gt;&lt;table style="text-align:start; break-inside: avoid; table-layout: auto; width: 100%; border-collapse: collapse; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt; margin-bottom: 3pt;"&gt;&lt;tr style="break-after: avoid; border-bottom-style: none; border-bottom-width: initial; break-inside: avoid-page; background-color: rgb(0, 95, 158); border-right-color: rgb(255, 255, 255); border-right-style: solid; border-right-width: 0.5pt; height: 19.008pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 126.9pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Share class&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 171.072pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 0px; font-size: 10pt; line-height: 10pt; width: 267.948pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: none;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs paid as a percentage of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: 20pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 126.9pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;Class C&lt;/td&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 10pt; line-height: 10pt; text-align: center; width: 171.072pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;30&lt;/td&gt;&lt;td style="break-inside: avoid-page; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 267.948pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; vertical-align: bottom;"&gt;0.60&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;div style=";display:inline;vertical-align: super;font-size:9.2px"&gt;*&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;div style="margin-top: 0; font-weight: normal; font-family: 'Arial'; font-size: 8pt; line-height: 8.5pt; color: rgb(0, 0, 0); margin-bottom: 4pt;"&gt;*Annualized.&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="P10_01_2025To03_31_2026_C000075895MemberoefClassAxis"
      decimals="0"
      id="ixv-24088"
      unitRef="Unit_USD">30</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="P10_01_2025To03_31_2026_C000075895MemberoefClassAxis"
      decimals="INF"
      id="Fact_8002266"
      unitRef="Unit_pure">0.006</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075895MemberoefClassAxis"
      id="ixv-232">&lt;div style="text-transform: none; margin-bottom: 2.0016pt; font-family: 'Times New Roman'; font-weight: bold; font-size: 11pt; line-height: 11pt; letter-spacing: normal; color: rgb(0, 95, 158); margin-top: 18pt;"&gt;Key fund statistics&lt;/div&gt;&lt;table style="text-align:start; width: 100%; border-collapse: collapse; break-inside: avoid;"&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto; border-top-color: rgb(153, 153, 153); border-top-style: solid; border-top-width: 0.5pt;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Fund net assets (in millions)&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;35,411&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Total number of portfolio holdings&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;157&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="PAsOn03_31_2026_C000075895MemberoefClassAxis"
      decimals="-6"
      id="ixv-24090"
      unitRef="Unit_USD">35411000000</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="PAsOn03_31_2026_C000075895MemberoefClassAxis"
      decimals="0"
      id="ixv-24091"
      unitRef="Unit_Holding">157</oef:HoldingsCount>
    <oef:HoldingsTableTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075895MemberoefClassAxis"
      id="ixv-247">&lt;div style="border-bottom-width: initial; border-bottom-style: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 0, 0); margin-bottom: 2.0016pt; padding-bottom: 0; border-bottom-color: initial; padding-left: 27pt; margin-top: 18pt;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 95, 158); margin-top: 10pt; margin-bottom: 3pt; padding-bottom: 0; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;font-weight:bolder;display:inline;"&gt;Portfolio holdings by asset type&lt;/div&gt;&#160;(percent of net assets)&lt;/div&gt;&lt;table style="text-align:start; border-collapse: collapse; break-inside: avoid; margin-left: 27pt; width: 91%; margin-bottom: 10pt;"&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Short-term securities:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bills&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;44.78&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Federal agency bills &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;37.95&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Repurchase agreements&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;13.13&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Bonds, notes &amp;amp; other debt instruments:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bonds &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;6.37&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Other assets less liabilities&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; width: 40pt; padding-right: 0; padding-left: 0; line-height: 9pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt;(2.23&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;)&lt;/div&gt;&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Total&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: double; border-bottom-width: 2pt;"&gt;100.00&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075895MemberoefClassAxis_USTreasuryBillsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24092"
      unitRef="Unit_pure">0.4478</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075895MemberoefClassAxis_FederalAgencyBillsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24093"
      unitRef="Unit_pure">0.3795</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075895MemberoefClassAxis_RepurchaseAgreementsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24094"
      unitRef="Unit_pure">0.1313</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075895MemberoefClassAxis_USTreasuryBondsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24095"
      unitRef="Unit_pure">0.0637</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075895MemberoefClassAxis_OtherAssetsLessLiabilitiesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24096"
      unitRef="Unit_pure">-0.0223</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075895MemberoefClassAxis"
      decimals="INF"
      id="ixv-24097"
      unitRef="Unit_pure">1</oef:PctOfNav>
    <oef:FundName
      contextRef="P10_01_2025To03_31_2026_C000189453MemberoefClassAxis"
      id="ixv-310">American Funds&#xae; U.S. Government Money Market Fund</oef:FundName>
    <oef:ClassName
      contextRef="P10_01_2025To03_31_2026_C000189453MemberoefClassAxis"
      id="ixv-24098">Class T</oef:ClassName>
    <dei:TradingSymbol
      contextRef="P10_01_2025To03_31_2026_C000189453MemberoefClassAxis"
      id="ixv-24099">TTMXX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock
      contextRef="P10_01_2025To03_31_2026_C000189453MemberoefClassAxis"
      id="ixv-24100">This semi-annual shareholder report contains important information about American Funds U.S. Government Money Market Fund (the "fund") for the period from October 1, 2025 to March 31, 2026.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual
      contextRef="P10_01_2025To03_31_2026_C000189453MemberoefClassAxis"
      id="ixv-24101">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock
      contextRef="P10_01_2025To03_31_2026_C000189453MemberoefClassAxis"
      id="ixv-317">You can find additional information about the fund at &lt;div style="text-decoration-line: underline; font-family: &amp;quot;Times New Roman&amp;quot;; color: rgb(0, 95, 158); font-size: 10pt; letter-spacing: -0.05pt; line-height: 15pt;display:inline;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;capitalgroup.com/mutual-fund-literature&lt;/div&gt;&lt;/div&gt;. You can also request this information by contacting us at &lt;br/&gt;(800) 421-4225.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite
      contextRef="P10_01_2025To03_31_2026_C000189453MemberoefClassAxis"
      id="ixv-24102">capitalgroup.com/mutual-fund-literature</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber
      contextRef="P10_01_2025To03_31_2026_C000189453MemberoefClassAxis"
      id="ixv-24103">(800) 421-4225</oef:AddlInfoPhoneNumber>
    <oef:ExpensesTextBlock
      contextRef="P10_01_2025To03_31_2026_C000189453MemberoefClassAxis"
      id="ixv-322">&lt;div style="margin-bottom: 6pt;"&gt;&lt;div style="margin-top: 0; letter-spacing: normal; text-transform: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 13pt; color: rgb(0, 0, 0); margin-bottom: 0;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 13pt; color: rgb(0, 95, 158);font-weight:bolder;display:inline;width:100%;"&gt;What were the fund costs for the last six months?&lt;/div&gt; (based on a hypothetical $10,000 investment)&lt;/div&gt;&lt;/div&gt;&lt;div style="margin-bottom: 4pt;"&gt;&lt;table style="text-align:start; break-inside: avoid; table-layout: auto; width: 100%; border-collapse: collapse; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt; margin-bottom: 3pt;"&gt;&lt;tr style="break-after: avoid; border-bottom-style: none; border-bottom-width: initial; break-inside: avoid-page; background-color: rgb(0, 95, 158); border-right-color: rgb(255, 255, 255); border-right-style: solid; border-right-width: 0.5pt; height: 19.008pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 126.9pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Share class&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 171.072pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 0px; font-size: 10pt; line-height: 10pt; width: 267.948pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: none;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs paid as a percentage of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: 20pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 126.9pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;Class T&lt;/td&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 10pt; line-height: 10pt; text-align: center; width: 171.072pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;18&lt;/td&gt;&lt;td style="break-inside: avoid-page; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 267.948pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; vertical-align: bottom;"&gt;0.36&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;div style=";display:inline;vertical-align: super;font-size:9.2px"&gt;*&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;div style="margin-top: 0; font-weight: normal; font-family: 'Arial'; font-size: 8pt; line-height: 8.5pt; color: rgb(0, 0, 0); margin-bottom: 4pt;"&gt;*Annualized.&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="P10_01_2025To03_31_2026_C000189453MemberoefClassAxis"
      decimals="0"
      id="ixv-24104"
      unitRef="Unit_USD">18</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="P10_01_2025To03_31_2026_C000189453MemberoefClassAxis"
      decimals="INF"
      id="Fact_8002274"
      unitRef="Unit_pure">0.0036</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock
      contextRef="P10_01_2025To03_31_2026_C000189453MemberoefClassAxis"
      id="ixv-349">&lt;div style="text-transform: none; margin-bottom: 2.0016pt; font-family: 'Times New Roman'; font-weight: bold; font-size: 11pt; line-height: 11pt; letter-spacing: normal; color: rgb(0, 95, 158); margin-top: 18pt;"&gt;Key fund statistics&lt;/div&gt;&lt;table style="text-align:start; width: 100%; border-collapse: collapse; break-inside: avoid;"&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto; border-top-color: rgb(153, 153, 153); border-top-style: solid; border-top-width: 0.5pt;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Fund net assets (in millions)&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;35,411&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Total number of portfolio holdings&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;157&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="PAsOn03_31_2026_C000189453MemberoefClassAxis"
      decimals="-6"
      id="ixv-24106"
      unitRef="Unit_USD">35411000000</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="PAsOn03_31_2026_C000189453MemberoefClassAxis"
      decimals="0"
      id="ixv-24107"
      unitRef="Unit_Holding">157</oef:HoldingsCount>
    <oef:HoldingsTableTextBlock
      contextRef="P10_01_2025To03_31_2026_C000189453MemberoefClassAxis"
      id="ixv-363">&lt;div style="border-bottom-width: initial; border-bottom-style: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 0, 0); margin-bottom: 2.0016pt; padding-bottom: 0; border-bottom-color: initial; padding-left: 27pt; margin-top: 18pt;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 95, 158); margin-top: 10pt; margin-bottom: 3pt; padding-bottom: 0; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;font-weight:bolder;display:inline;"&gt;Portfolio holdings by asset type&lt;/div&gt;&#160;(percent of net assets)&lt;/div&gt;&lt;table style="text-align:start; border-collapse: collapse; break-inside: avoid; margin-left: 27pt; width: 91%; margin-bottom: 10pt;"&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;div style="display:inline;"&gt;Short&lt;/div&gt;-term securities:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bills&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;44.78&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Federal agency bills &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;37.95&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Repurchase agreements&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;13.13&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Bonds, notes &amp;amp; other debt instruments:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bonds &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;6.37&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Other assets less liabilities&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; width: 40pt; padding-right: 0; padding-left: 0; line-height: 9pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt;(2.23&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;)&lt;/div&gt;&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Total&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: double; border-bottom-width: 2pt;"&gt;100.00&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000189453MemberoefClassAxis_USTreasuryBillsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24108"
      unitRef="Unit_pure">0.4478</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000189453MemberoefClassAxis_FederalAgencyBillsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24109"
      unitRef="Unit_pure">0.3795</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000189453MemberoefClassAxis_RepurchaseAgreementsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24110"
      unitRef="Unit_pure">0.1313</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000189453MemberoefClassAxis_USTreasuryBondsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24111"
      unitRef="Unit_pure">0.0637</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000189453MemberoefClassAxis_OtherAssetsLessLiabilitiesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24112"
      unitRef="Unit_pure">-0.0223</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000189453MemberoefClassAxis"
      decimals="INF"
      id="ixv-24113"
      unitRef="Unit_pure">1</oef:PctOfNav>
    <oef:FundName
      contextRef="P10_01_2025To03_31_2026_C000075896MemberoefClassAxis"
      id="ixv-427">American Funds&#xae; U.S. Government Money Market Fund</oef:FundName>
    <oef:ClassName
      contextRef="P10_01_2025To03_31_2026_C000075896MemberoefClassAxis"
      id="ixv-24114">Class F-1</oef:ClassName>
    <dei:TradingSymbol
      contextRef="P10_01_2025To03_31_2026_C000075896MemberoefClassAxis"
      id="ixv-24115">AFFXX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075896MemberoefClassAxis"
      id="ixv-24116">This semi-annual shareholder report contains important information about American Funds U.S. Government Money Market Fund (the "fund") for the period from October 1, 2025 to March 31, 2026.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual
      contextRef="P10_01_2025To03_31_2026_C000075896MemberoefClassAxis"
      id="ixv-24117">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075896MemberoefClassAxis"
      id="ixv-434">You can find additional information about the fund at &lt;div style="text-decoration-line: underline; font-family: &amp;quot;Times New Roman&amp;quot;; color: rgb(0, 95, 158); font-size: 10pt; letter-spacing: -0.05pt; line-height: 15pt;display:inline;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;capitalgroup.com/mutual-fund-literature-F1&lt;/div&gt;&lt;/div&gt;. You can also request this information by contacting us at &lt;br/&gt;(800) 421-4225.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite
      contextRef="P10_01_2025To03_31_2026_C000075896MemberoefClassAxis"
      id="ixv-24118">capitalgroup.com/mutual-fund-literature-F1</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber
      contextRef="P10_01_2025To03_31_2026_C000075896MemberoefClassAxis"
      id="ixv-24119">(800) 421-4225</oef:AddlInfoPhoneNumber>
    <oef:ExpensesTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075896MemberoefClassAxis"
      id="ixv-439">&lt;div style="margin-bottom: 6pt;"&gt;&lt;div style="margin-top: 0; letter-spacing: normal; text-transform: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 13pt; color: rgb(0, 0, 0); margin-bottom: 0;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 13pt; color: rgb(0, 95, 158);font-weight:bolder;display:inline;width:100%;"&gt;What were the fund costs for the last six months?&lt;/div&gt; (based on a hypothetical $10,000 investment)&lt;/div&gt;&lt;/div&gt;&lt;div style="margin-bottom: 4pt;"&gt;&lt;table style="text-align:start; break-inside: avoid; table-layout: auto; width: 100%; border-collapse: collapse; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt; margin-bottom: 3pt;"&gt;&lt;tr style="break-after: avoid; border-bottom-style: none; border-bottom-width: initial; break-inside: avoid-page; background-color: rgb(0, 95, 158); border-right-color: rgb(255, 255, 255); border-right-style: solid; border-right-width: 0.5pt; height: 19.008pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 126.9pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Share class&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 171.072pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 0px; font-size: 10pt; line-height: 10pt; width: 267.948pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: none;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs paid as a percentage of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: 20pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 126.9pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;Class F-1&lt;/td&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 10pt; line-height: 10pt; text-align: center; width: 171.072pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;34&lt;/td&gt;&lt;td style="break-inside: avoid-page; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 267.948pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; vertical-align: bottom;"&gt;0.67&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;div style=";display:inline;vertical-align: super;font-size:9.2px"&gt;*&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;div style="margin-top: 0; font-weight: normal; font-family: 'Arial'; font-size: 8pt; line-height: 8.5pt; color: rgb(0, 0, 0); margin-bottom: 4pt;"&gt;*Annualized.&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="P10_01_2025To03_31_2026_C000075896MemberoefClassAxis"
      decimals="0"
      id="ixv-24120"
      unitRef="Unit_USD">34</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="P10_01_2025To03_31_2026_C000075896MemberoefClassAxis"
      decimals="INF"
      id="Fact_8002282"
      unitRef="Unit_pure">0.0067</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075896MemberoefClassAxis"
      id="ixv-466">&lt;div style="text-transform: none; margin-bottom: 2.0016pt; font-family: 'Times New Roman'; font-weight: bold; font-size: 11pt; line-height: 11pt; letter-spacing: normal; color: rgb(0, 95, 158); margin-top: 18pt;"&gt;Key fund statistics&lt;/div&gt;&lt;table style="text-align:start; width: 100%; border-collapse: collapse; break-inside: avoid;"&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto; border-top-color: rgb(153, 153, 153); border-top-style: solid; border-top-width: 0.5pt;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Fund net assets (in millions)&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;35,411&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Total number of portfolio holdings&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;157&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="PAsOn03_31_2026_C000075896MemberoefClassAxis"
      decimals="-6"
      id="ixv-24122"
      unitRef="Unit_USD">35411000000</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="PAsOn03_31_2026_C000075896MemberoefClassAxis"
      decimals="0"
      id="ixv-24123"
      unitRef="Unit_Holding">157</oef:HoldingsCount>
    <oef:HoldingsTableTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075896MemberoefClassAxis"
      id="ixv-480">&lt;div style="border-bottom-width: initial; border-bottom-style: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 0, 0); margin-bottom: 2.0016pt; padding-bottom: 0; border-bottom-color: initial; padding-left: 27pt; margin-top: 18pt;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 95, 158); margin-top: 10pt; margin-bottom: 3pt; padding-bottom: 0; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;font-weight:bolder;display:inline;"&gt;Portfolio &lt;div style="display:inline;"&gt;holdings&lt;/div&gt; by asset type&lt;/div&gt;&#160;(percent of net assets)&lt;/div&gt;&lt;table style="text-align:start; border-collapse: collapse; break-inside: avoid; margin-left: 27pt; width: 91%; margin-bottom: 10pt;"&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Short-term securities:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bills&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;44.78&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Federal agency bills &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;37.95&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Repurchase agreements&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;13.13&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Bonds, notes &amp;amp; other debt instruments:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bonds &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;6.37&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Other assets less liabilities&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; width: 40pt; padding-right: 0; padding-left: 0; line-height: 9pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt;(2.23&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;)&lt;/div&gt;&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Total&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: double; border-bottom-width: 2pt;"&gt;100.00&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075896MemberoefClassAxis_USTreasuryBillsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24124"
      unitRef="Unit_pure">0.4478</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075896MemberoefClassAxis_FederalAgencyBillsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24125"
      unitRef="Unit_pure">0.3795</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075896MemberoefClassAxis_RepurchaseAgreementsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24126"
      unitRef="Unit_pure">0.1313</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075896MemberoefClassAxis_USTreasuryBondsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24127"
      unitRef="Unit_pure">0.0637</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075896MemberoefClassAxis_OtherAssetsLessLiabilitiesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24128"
      unitRef="Unit_pure">-0.0223</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075896MemberoefClassAxis"
      decimals="INF"
      id="ixv-24129"
      unitRef="Unit_pure">1</oef:PctOfNav>
    <oef:FundName
      contextRef="P10_01_2025To03_31_2026_C000075897MemberoefClassAxis"
      id="ixv-544">American Funds&#xae; U.S. Government Money Market Fund</oef:FundName>
    <oef:ClassName
      contextRef="P10_01_2025To03_31_2026_C000075897MemberoefClassAxis"
      id="ixv-24130">Class F-2</oef:ClassName>
    <dei:TradingSymbol
      contextRef="P10_01_2025To03_31_2026_C000075897MemberoefClassAxis"
      id="ixv-24131">AFGXX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075897MemberoefClassAxis"
      id="ixv-551">This semi-annual shareholder report contains important information about American Funds U.S. Government Money Market Fund&lt;div style="white-space: nowrap;display:inline;"&gt;&#160;&lt;/div&gt;(the "fund") for the period from October 1, 2025 to March 31, 2026.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual
      contextRef="P10_01_2025To03_31_2026_C000075897MemberoefClassAxis"
      id="ixv-24132">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075897MemberoefClassAxis"
      id="ixv-553">You can find additional information about the fund at &lt;div style="text-decoration-line: underline; font-family: &amp;quot;Times New Roman&amp;quot;; color: rgb(0, 95, 158); font-size: 10pt; letter-spacing: -0.05pt; line-height: 15pt;display:inline;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;capitalgroup.com/mutual-fund-literature-F2&lt;/div&gt;&lt;/div&gt;. You can also request this information by contacting us at &lt;br/&gt;(800) 421-4225.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite
      contextRef="P10_01_2025To03_31_2026_C000075897MemberoefClassAxis"
      id="ixv-24133">capitalgroup.com/mutual-fund-literature-F2</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber
      contextRef="P10_01_2025To03_31_2026_C000075897MemberoefClassAxis"
      id="ixv-24134">(800) 421-4225</oef:AddlInfoPhoneNumber>
    <oef:ExpensesTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075897MemberoefClassAxis"
      id="ixv-558">&lt;div style="margin-bottom: 6pt;"&gt;&lt;div style="margin-top: 0; letter-spacing: normal; text-transform: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 13pt; color: rgb(0, 0, 0); margin-bottom: 0;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 13pt; color: rgb(0, 95, 158);font-weight:bolder;display:inline;width:100%;"&gt;What were the fund costs for the last six months?&lt;/div&gt; (based on a hypothetical $10,000 investment)&lt;/div&gt;&lt;/div&gt;&lt;div style="margin-bottom: 4pt;"&gt;&lt;table style="text-align:start; break-inside: avoid; table-layout: auto; width: 100%; border-collapse: collapse; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt; margin-bottom: 3pt;"&gt;&lt;tr style="break-after: avoid; border-bottom-style: none; border-bottom-width: initial; break-inside: avoid-page; background-color: rgb(0, 95, 158); border-right-color: rgb(255, 255, 255); border-right-style: solid; border-right-width: 0.5pt; height: 19.008pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 126.9pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Share class&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 171.072pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 0px; font-size: 10pt; line-height: 10pt; width: 267.948pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: none;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs paid as a percentage of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: 20pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 126.9pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;Class F-2&lt;/td&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 10pt; line-height: 10pt; text-align: center; width: 171.072pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;20&lt;/td&gt;&lt;td style="break-inside: avoid-page; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 267.948pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; vertical-align: bottom;"&gt;0.39&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;div style=";display:inline;vertical-align: super;font-size:9.2px"&gt;*&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;div style="margin-top: 0; font-weight: normal; font-family: 'Arial'; font-size: 8pt; line-height: 8.5pt; color: rgb(0, 0, 0); margin-bottom: 4pt;"&gt;*Annualized.&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="P10_01_2025To03_31_2026_C000075897MemberoefClassAxis"
      decimals="0"
      id="ixv-24135"
      unitRef="Unit_USD">20</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="P10_01_2025To03_31_2026_C000075897MemberoefClassAxis"
      decimals="INF"
      id="Fact_8002290"
      unitRef="Unit_pure">0.0039</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075897MemberoefClassAxis"
      id="ixv-585">&lt;div style="text-transform: none; margin-bottom: 2.0016pt; font-family: 'Times New Roman'; font-weight: bold; font-size: 11pt; line-height: 11pt; letter-spacing: normal; color: rgb(0, 95, 158); margin-top: 18pt;"&gt;Key fund statistics&lt;/div&gt;&lt;table style="text-align:start; width: 100%; border-collapse: collapse; break-inside: avoid;"&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto; border-top-color: rgb(153, 153, 153); border-top-style: solid; border-top-width: 0.5pt;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Fund net assets (in millions)&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;35,411&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Total number of portfolio holdings&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;157&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="PAsOn03_31_2026_C000075897MemberoefClassAxis"
      decimals="-6"
      id="ixv-24137"
      unitRef="Unit_USD">35411000000</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="PAsOn03_31_2026_C000075897MemberoefClassAxis"
      decimals="0"
      id="ixv-24138"
      unitRef="Unit_Holding">157</oef:HoldingsCount>
    <oef:HoldingsTableTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075897MemberoefClassAxis"
      id="ixv-599">&lt;div style="border-bottom-width: initial; border-bottom-style: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 0, 0); margin-bottom: 2.0016pt; padding-bottom: 0; border-bottom-color: initial; padding-left: 27pt; margin-top: 18pt;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 95, 158); margin-top: 10pt; margin-bottom: 3pt; padding-bottom: 0; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;font-weight:bolder;display:inline;"&gt;Portfolio holdings by as&lt;div style="display:inline;"&gt;set&lt;/div&gt; type&lt;/div&gt;&#160;(percent of net assets)&lt;/div&gt;&lt;table style="text-align:start; border-collapse: collapse; break-inside: avoid; margin-left: 27pt; width: 91%; margin-bottom: 10pt;"&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Short-term securities:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bills&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;44.78&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Federal agency bills &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;37.95&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Repurchase agreements&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;13.13&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Bonds, notes &amp;amp; other debt instruments:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bonds &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;6.37&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Other assets less liabilities&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; width: 40pt; padding-right: 0; padding-left: 0; line-height: 9pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt;(2.23&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;)&lt;/div&gt;&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Total&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: double; border-bottom-width: 2pt;"&gt;100.00&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075897MemberoefClassAxis_USTreasuryBillsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24139"
      unitRef="Unit_pure">0.4478</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075897MemberoefClassAxis_FederalAgencyBillsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24140"
      unitRef="Unit_pure">0.3795</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075897MemberoefClassAxis_RepurchaseAgreementsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24141"
      unitRef="Unit_pure">0.1313</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075897MemberoefClassAxis_USTreasuryBondsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24142"
      unitRef="Unit_pure">0.0637</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075897MemberoefClassAxis_OtherAssetsLessLiabilitiesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24143"
      unitRef="Unit_pure">-0.0223</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075897MemberoefClassAxis"
      decimals="INF"
      id="ixv-24144"
      unitRef="Unit_pure">1</oef:PctOfNav>
    <oef:FundName
      contextRef="P10_01_2025To03_31_2026_C000179955MemberoefClassAxis"
      id="ixv-663">American Funds&#xae; U.S. Government Money Market Fund</oef:FundName>
    <oef:ClassName
      contextRef="P10_01_2025To03_31_2026_C000179955MemberoefClassAxis"
      id="ixv-24145">Class F-3</oef:ClassName>
    <dei:TradingSymbol
      contextRef="P10_01_2025To03_31_2026_C000179955MemberoefClassAxis"
      id="ixv-24146">USGXX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock
      contextRef="P10_01_2025To03_31_2026_C000179955MemberoefClassAxis"
      id="ixv-24147">This semi-annual shareholder report contains important information about American Funds U.S. Government Money Market Fund (the "fund") for the period from October 1, 2025 to March 31, 2026.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual
      contextRef="P10_01_2025To03_31_2026_C000179955MemberoefClassAxis"
      id="ixv-24148">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock
      contextRef="P10_01_2025To03_31_2026_C000179955MemberoefClassAxis"
      id="ixv-670">You can find additional information about the fund at &lt;div style="text-decoration-line: underline; font-family: &amp;quot;Times New Roman&amp;quot;; color: rgb(0, 95, 158); font-size: 10pt; letter-spacing: -0.05pt; line-height: 15pt;display:inline;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;capitalgroup.com/mutual-fund-literature-F3&lt;/div&gt;&lt;/div&gt;. You can also request this information by contacting us at &lt;br/&gt;(800) 421-4225.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite
      contextRef="P10_01_2025To03_31_2026_C000179955MemberoefClassAxis"
      id="ixv-24149">capitalgroup.com/mutual-fund-literature-F3</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber
      contextRef="P10_01_2025To03_31_2026_C000179955MemberoefClassAxis"
      id="ixv-24150">(800) 421-4225</oef:AddlInfoPhoneNumber>
    <oef:ExpensesTextBlock
      contextRef="P10_01_2025To03_31_2026_C000179955MemberoefClassAxis"
      id="ixv-675">&lt;div style="margin-bottom: 6pt;"&gt;&lt;div style="margin-top: 0; letter-spacing: normal; text-transform: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 13pt; color: rgb(0, 0, 0); margin-bottom: 0;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 13pt; color: rgb(0, 95, 158);font-weight:bolder;display:inline;width:100%;"&gt;What were the fund costs for the last six months?&lt;/div&gt; (based on a hypothetical $10,000 investment)&lt;/div&gt;&lt;/div&gt;&lt;div style="margin-bottom: 4pt;"&gt;&lt;table style="text-align:start; break-inside: avoid; table-layout: auto; width: 100%; border-collapse: collapse; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt; margin-bottom: 3pt;"&gt;&lt;tr style="break-after: avoid; border-bottom-style: none; border-bottom-width: initial; break-inside: avoid-page; background-color: rgb(0, 95, 158); border-right-color: rgb(255, 255, 255); border-right-style: solid; border-right-width: 0.5pt; height: 19.008pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 126.9pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Share class&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 171.072pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 0px; font-size: 10pt; line-height: 10pt; width: 267.948pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: none;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs paid as a percentage of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: 20pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 126.9pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;Class F-3&lt;/td&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 10pt; line-height: 10pt; text-align: center; width: 171.072pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;16&lt;/td&gt;&lt;td style="break-inside: avoid-page; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 267.948pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; vertical-align: bottom;"&gt;0.31&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;div style=";display:inline;vertical-align: super;font-size:9.2px"&gt;*&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;div style="margin-top: 0; font-weight: normal; font-family: 'Arial'; font-size: 8pt; line-height: 8.5pt; color: rgb(0, 0, 0); margin-bottom: 4pt;"&gt;*Annualized.&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="P10_01_2025To03_31_2026_C000179955MemberoefClassAxis"
      decimals="0"
      id="ixv-24151"
      unitRef="Unit_USD">16</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="P10_01_2025To03_31_2026_C000179955MemberoefClassAxis"
      decimals="INF"
      id="Fact_8002298"
      unitRef="Unit_pure">0.0031</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock
      contextRef="P10_01_2025To03_31_2026_C000179955MemberoefClassAxis"
      id="ixv-702">&lt;div style="text-transform: none; margin-bottom: 2.0016pt; font-family: 'Times New Roman'; font-weight: bold; font-size: 11pt; line-height: 11pt; letter-spacing: normal; color: rgb(0, 95, 158); margin-top: 18pt;"&gt;Key fund statistics&lt;/div&gt;&lt;table style="text-align:start; width: 100%; border-collapse: collapse; break-inside: avoid;"&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto; border-top-color: rgb(153, 153, 153); border-top-style: solid; border-top-width: 0.5pt;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Fund net assets (in millions)&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;35,411&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Total number of portfolio holdings&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;157&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="PAsOn03_31_2026_C000179955MemberoefClassAxis"
      decimals="-6"
      id="ixv-24153"
      unitRef="Unit_USD">35411000000</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="PAsOn03_31_2026_C000179955MemberoefClassAxis"
      decimals="0"
      id="ixv-24154"
      unitRef="Unit_Holding">157</oef:HoldingsCount>
    <oef:HoldingsTableTextBlock
      contextRef="P10_01_2025To03_31_2026_C000179955MemberoefClassAxis"
      id="ixv-716">&lt;div style="border-bottom-width: initial; border-bottom-style: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 0, 0); margin-bottom: 2.0016pt; padding-bottom: 0; border-bottom-color: initial; padding-left: 27pt; margin-top: 18pt;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 95, 158); margin-top: 10pt; margin-bottom: 3pt; padding-bottom: 0; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;font-weight:bolder;display:inline;"&gt;Portfolio holdings by asset type&lt;/div&gt;&#160;(percent of net assets)&lt;/div&gt;&lt;table style="text-align:start; border-collapse: collapse; break-inside: avoid; margin-left: 27pt; width: 91%; margin-bottom: 10pt;"&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Short-&lt;div style="display:inline;"&gt;term&lt;/div&gt; securities:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bills&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;44.78&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Federal agency bills &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;37.95&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Repurchase agreements&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;13.13&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Bonds, notes &amp;amp; other debt instruments:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bonds &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;6.37&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Other assets less liabilities&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; width: 40pt; padding-right: 0; padding-left: 0; line-height: 9pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt;(2.23&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;)&lt;/div&gt;&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Total&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: double; border-bottom-width: 2pt;"&gt;100.00&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000179955MemberoefClassAxis_USTreasuryBillsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24155"
      unitRef="Unit_pure">0.4478</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000179955MemberoefClassAxis_FederalAgencyBillsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24156"
      unitRef="Unit_pure">0.3795</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000179955MemberoefClassAxis_RepurchaseAgreementsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24157"
      unitRef="Unit_pure">0.1313</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000179955MemberoefClassAxis_USTreasuryBondsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24158"
      unitRef="Unit_pure">0.0637</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000179955MemberoefClassAxis_OtherAssetsLessLiabilitiesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24159"
      unitRef="Unit_pure">-0.0223</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000179955MemberoefClassAxis"
      decimals="INF"
      id="ixv-24160"
      unitRef="Unit_pure">1</oef:PctOfNav>
    <oef:FundName
      contextRef="P10_01_2025To03_31_2026_C000075898MemberoefClassAxis"
      id="ixv-780">American Funds&#xae; U.S. Government Money Market Fund</oef:FundName>
    <oef:ClassName
      contextRef="P10_01_2025To03_31_2026_C000075898MemberoefClassAxis"
      id="ixv-24161">Class 529-A</oef:ClassName>
    <dei:TradingSymbol
      contextRef="P10_01_2025To03_31_2026_C000075898MemberoefClassAxis"
      id="ixv-24162">AAFXX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075898MemberoefClassAxis"
      id="ixv-787">This semi-annual shareholder report contains &lt;div style="display:inline;"&gt;imp&lt;/div&gt;ortant information about American Funds U.S. Government Money Market Fund (the "fund") for the period from October 1, 2025 to March 31, 2026.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual
      contextRef="P10_01_2025To03_31_2026_C000075898MemberoefClassAxis"
      id="ixv-24163">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075898MemberoefClassAxis"
      id="ixv-789">You can find additional information about the fund at &lt;div style="text-decoration-line: underline; font-family: &amp;quot;Times New Roman&amp;quot;; color: rgb(0, 95, 158); font-size: 10pt; letter-spacing: -0.05pt; line-height: 15pt;display:inline;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;capitalgroup.com/mutual-fund-literature-529A&lt;/div&gt;&lt;/div&gt;. You can also request this information by contacting us at &lt;br/&gt;(800) 421-4225.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite
      contextRef="P10_01_2025To03_31_2026_C000075898MemberoefClassAxis"
      id="ixv-24164">capitalgroup.com/mutual-fund-literature-529A</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber
      contextRef="P10_01_2025To03_31_2026_C000075898MemberoefClassAxis"
      id="ixv-24165">(800) 421-4225</oef:AddlInfoPhoneNumber>
    <oef:ExpensesTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075898MemberoefClassAxis"
      id="ixv-794">&lt;div style="margin-bottom: 6pt;"&gt;&lt;div style="margin-top: 0; letter-spacing: normal; text-transform: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 13pt; color: rgb(0, 0, 0); margin-bottom: 0;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 13pt; color: rgb(0, 95, 158);font-weight:bolder;display:inline;width:100%;"&gt;What were the fund costs for the last six months?&lt;/div&gt; (based on a hypothetical $10,000 investment)&lt;/div&gt;&lt;/div&gt;&lt;div style="margin-bottom: 4pt;"&gt;&lt;table style="text-align:start; break-inside: avoid; table-layout: auto; width: 100%; border-collapse: collapse; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt; margin-bottom: 3pt;"&gt;&lt;tr style="break-after: avoid; border-bottom-style: none; border-bottom-width: initial; break-inside: avoid-page; background-color: rgb(0, 95, 158); border-right-color: rgb(255, 255, 255); border-right-style: solid; border-right-width: 0.5pt; height: 19.008pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 126.9pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Share class&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 171.072pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 0px; font-size: 10pt; line-height: 10pt; width: 267.948pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: none;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs paid as a percentage of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: 20pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 126.9pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;Class 529-A&lt;/td&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 10pt; line-height: 10pt; text-align: center; width: 171.072pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;28&lt;/td&gt;&lt;td style="break-inside: avoid-page; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 267.948pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; vertical-align: bottom;"&gt;0.56&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;div style=";display:inline;vertical-align: super;font-size:9.2px"&gt;*&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;div style="margin-top: 0; font-weight: normal; font-family: 'Arial'; font-size: 8pt; line-height: 8.5pt; color: rgb(0, 0, 0); margin-bottom: 4pt;"&gt;*Annualized.&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="P10_01_2025To03_31_2026_C000075898MemberoefClassAxis"
      decimals="0"
      id="ixv-24166"
      unitRef="Unit_USD">28</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="P10_01_2025To03_31_2026_C000075898MemberoefClassAxis"
      decimals="INF"
      id="Fact_8002306"
      unitRef="Unit_pure">0.0056</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075898MemberoefClassAxis"
      id="ixv-821">&lt;div style="text-transform: none; margin-bottom: 2.0016pt; font-family: 'Times New Roman'; font-weight: bold; font-size: 11pt; line-height: 11pt; letter-spacing: normal; color: rgb(0, 95, 158); margin-top: 18pt;"&gt;Key fund statistics&lt;/div&gt;&lt;table style="text-align:start; width: 100%; border-collapse: collapse; break-inside: avoid;"&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto; border-top-color: rgb(153, 153, 153); border-top-style: solid; border-top-width: 0.5pt;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Fund net assets (in millions)&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;35,411&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Total number of portfolio holdings&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;157&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="PAsOn03_31_2026_C000075898MemberoefClassAxis"
      decimals="-6"
      id="ixv-24168"
      unitRef="Unit_USD">35411000000</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="PAsOn03_31_2026_C000075898MemberoefClassAxis"
      decimals="0"
      id="ixv-24169"
      unitRef="Unit_Holding">157</oef:HoldingsCount>
    <oef:HoldingsTableTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075898MemberoefClassAxis"
      id="ixv-835">&lt;div style="border-bottom-width: initial; border-bottom-style: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 0, 0); margin-bottom: 2.0016pt; padding-bottom: 0; border-bottom-color: initial; padding-left: 27pt; margin-top: 18pt;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 95, 158); margin-top: 10pt; margin-bottom: 3pt; padding-bottom: 0; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;font-weight:bolder;display:inline;"&gt;Portfolio holdings by asset type&lt;/div&gt;&#160;(percent of net assets)&lt;/div&gt;&lt;table style="text-align:start; border-collapse: collapse; break-inside: avoid; margin-left: 27pt; width: 91%; margin-bottom: 10pt;"&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Short-term securities:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bills&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;44.78&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Federal agency bills &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;37.95&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Repurchase agreements&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;13.13&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Bonds, notes &amp;amp; other debt instruments:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bonds &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;6.37&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Other assets less liabilities&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; width: 40pt; padding-right: 0; padding-left: 0; line-height: 9pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt;(2.23&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;)&lt;/div&gt;&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Total&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: double; border-bottom-width: 2pt;"&gt;100.00&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075898MemberoefClassAxis_USTreasuryBillsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24170"
      unitRef="Unit_pure">0.4478</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075898MemberoefClassAxis_FederalAgencyBillsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24171"
      unitRef="Unit_pure">0.3795</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075898MemberoefClassAxis_RepurchaseAgreementsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24172"
      unitRef="Unit_pure">0.1313</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075898MemberoefClassAxis_USTreasuryBondsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24173"
      unitRef="Unit_pure">0.0637</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075898MemberoefClassAxis_OtherAssetsLessLiabilitiesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24174"
      unitRef="Unit_pure">-0.0223</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075898MemberoefClassAxis"
      decimals="INF"
      id="ixv-24175"
      unitRef="Unit_pure">1</oef:PctOfNav>
    <oef:FundName
      contextRef="P10_01_2025To03_31_2026_C000075900MemberoefClassAxis"
      id="ixv-898">American Funds&#xae; U.S. Government Money Market Fund</oef:FundName>
    <oef:ClassName
      contextRef="P10_01_2025To03_31_2026_C000075900MemberoefClassAxis"
      id="ixv-24176">Class 529-C</oef:ClassName>
    <dei:TradingSymbol
      contextRef="P10_01_2025To03_31_2026_C000075900MemberoefClassAxis"
      id="ixv-24177">CCFXX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075900MemberoefClassAxis"
      id="ixv-24178">This semi-annual shareholder report contains important information about American Funds U.S. Government Money Market Fund (the "fund") for the period from October 1, 2025 to March 31, 2026.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual
      contextRef="P10_01_2025To03_31_2026_C000075900MemberoefClassAxis"
      id="ixv-24179">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075900MemberoefClassAxis"
      id="ixv-905">You can find additional information about the fund at &lt;div style="text-decoration-line: underline; font-family: &amp;quot;Times New Roman&amp;quot;; color: rgb(0, 95, 158); font-size: 10pt; letter-spacing: -0.05pt; line-height: 15pt;display:inline;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;capitalgroup.com/mutual-fund-literature-529C&lt;/div&gt;&lt;/div&gt;. You can also request this information by contacting us at &lt;br/&gt;(800) 421-4225.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite
      contextRef="P10_01_2025To03_31_2026_C000075900MemberoefClassAxis"
      id="ixv-24180">capitalgroup.com/mutual-fund-literature-529C</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber
      contextRef="P10_01_2025To03_31_2026_C000075900MemberoefClassAxis"
      id="ixv-24181">(800) 421-4225</oef:AddlInfoPhoneNumber>
    <oef:ExpensesTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075900MemberoefClassAxis"
      id="ixv-910">&lt;div style="margin-bottom: 6pt;"&gt;&lt;div style="margin-top: 0; letter-spacing: normal; text-transform: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 13pt; color: rgb(0, 0, 0); margin-bottom: 0;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 13pt; color: rgb(0, 95, 158);font-weight:bolder;display:inline;width:100%;"&gt;What were the fund costs for the last six &lt;div style="display:inline;"&gt;months&lt;/div&gt;?&lt;/div&gt; (based on a hypothetical $10,000 investment)&lt;/div&gt;&lt;/div&gt;&lt;div style="margin-bottom: 4pt;"&gt;&lt;table style="text-align:start; break-inside: avoid; table-layout: auto; width: 100%; border-collapse: collapse; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt; margin-bottom: 3pt;"&gt;&lt;tr style="break-after: avoid; border-bottom-style: none; border-bottom-width: initial; break-inside: avoid-page; background-color: rgb(0, 95, 158); border-right-color: rgb(255, 255, 255); border-right-style: solid; border-right-width: 0.5pt; height: 19.008pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 126.9pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Share class&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 171.072pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 0px; font-size: 10pt; line-height: 10pt; width: 267.948pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: none;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs paid as a percentage of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: 20pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 126.9pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;Class 529-C&lt;/td&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 10pt; line-height: 10pt; text-align: center; width: 171.072pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;33&lt;/td&gt;&lt;td style="break-inside: avoid-page; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 267.948pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; vertical-align: bottom;"&gt;0.65&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;div style=";display:inline;vertical-align: super;font-size:9.2px"&gt;*&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;div style="margin-top: 0; font-weight: normal; font-family: 'Arial'; font-size: 8pt; line-height: 8.5pt; color: rgb(0, 0, 0); margin-bottom: 4pt;"&gt;*Annualized.&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="P10_01_2025To03_31_2026_C000075900MemberoefClassAxis"
      decimals="0"
      id="ixv-24182"
      unitRef="Unit_USD">33</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="P10_01_2025To03_31_2026_C000075900MemberoefClassAxis"
      decimals="INF"
      id="Fact_8002314"
      unitRef="Unit_pure">0.0065</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075900MemberoefClassAxis"
      id="ixv-938">&lt;div style="text-transform: none; margin-bottom: 2.0016pt; font-family: 'Times New Roman'; font-weight: bold; font-size: 11pt; line-height: 11pt; letter-spacing: normal; color: rgb(0, 95, 158); margin-top: 18pt;"&gt;Key fund statistics&lt;/div&gt;&lt;table style="text-align:start; width: 100%; border-collapse: collapse; break-inside: avoid;"&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto; border-top-color: rgb(153, 153, 153); border-top-style: solid; border-top-width: 0.5pt;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Fund net assets (in millions)&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;35,411&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Total number of portfolio holdings&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;157&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="PAsOn03_31_2026_C000075900MemberoefClassAxis"
      decimals="-6"
      id="ixv-24184"
      unitRef="Unit_USD">35411000000</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="PAsOn03_31_2026_C000075900MemberoefClassAxis"
      decimals="0"
      id="ixv-24185"
      unitRef="Unit_Holding">157</oef:HoldingsCount>
    <oef:HoldingsTableTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075900MemberoefClassAxis"
      id="ixv-952">&lt;div style="border-bottom-width: initial; border-bottom-style: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 0, 0); margin-bottom: 2.0016pt; padding-bottom: 0; border-bottom-color: initial; padding-left: 27pt; margin-top: 18pt;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 95, 158); margin-top: 10pt; margin-bottom: 3pt; padding-bottom: 0; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;font-weight:bolder;display:inline;"&gt;Portfolio holdings by asset type&lt;/div&gt;&#160;(percent of net assets)&lt;/div&gt;&lt;table style="text-align:start; border-collapse: collapse; break-inside: avoid; margin-left: 27pt; width: 91%; margin-bottom: 10pt;"&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Short-term securities:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bills&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;44.78&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Federal agency bills &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;37.95&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Repurchase agreements&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;13.13&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Bonds, notes &amp;amp; other debt instruments:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bonds &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;6.37&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Other assets less liabilities&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; width: 40pt; padding-right: 0; padding-left: 0; line-height: 9pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt;(2.23&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;)&lt;/div&gt;&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Total&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: double; border-bottom-width: 2pt;"&gt;100.00&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075900MemberoefClassAxis_USTreasuryBillsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24186"
      unitRef="Unit_pure">0.4478</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075900MemberoefClassAxis_FederalAgencyBillsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24187"
      unitRef="Unit_pure">0.3795</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075900MemberoefClassAxis_RepurchaseAgreementsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24188"
      unitRef="Unit_pure">0.1313</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075900MemberoefClassAxis_USTreasuryBondsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24189"
      unitRef="Unit_pure">0.0637</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075900MemberoefClassAxis_OtherAssetsLessLiabilitiesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24190"
      unitRef="Unit_pure">-0.0223</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075900MemberoefClassAxis"
      decimals="INF"
      id="ixv-24191"
      unitRef="Unit_pure">1</oef:PctOfNav>
    <oef:FundName
      contextRef="P10_01_2025To03_31_2026_C000075901MemberoefClassAxis"
      id="ixv-1016">American Funds&#xae; U.S. Government Money Market Fund</oef:FundName>
    <oef:ClassName
      contextRef="P10_01_2025To03_31_2026_C000075901MemberoefClassAxis"
      id="ixv-24192">Class 529-E</oef:ClassName>
    <dei:TradingSymbol
      contextRef="P10_01_2025To03_31_2026_C000075901MemberoefClassAxis"
      id="ixv-24193">EAFXX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075901MemberoefClassAxis"
      id="ixv-24194">This semi-annual shareholder report contains important information about American Funds U.S. Government Money Market Fund (the "fund") for the period from October 1, 2025 to March 31, 2026.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual
      contextRef="P10_01_2025To03_31_2026_C000075901MemberoefClassAxis"
      id="ixv-24195">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075901MemberoefClassAxis"
      id="ixv-1023">You can find additional information about the fund at &lt;div style="text-decoration-line: underline; font-family: &amp;quot;Times New Roman&amp;quot;; color: rgb(0, 95, 158); font-size: 10pt; letter-spacing: -0.05pt; line-height: 15pt;display:inline;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;capitalgroup.com/mutual-fund-literature-529E&lt;/div&gt;&lt;/div&gt;. You can also request this information by contacting us at &lt;br/&gt;(800) 421-4225.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite
      contextRef="P10_01_2025To03_31_2026_C000075901MemberoefClassAxis"
      id="ixv-24196">capitalgroup.com/mutual-fund-literature-529E</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber
      contextRef="P10_01_2025To03_31_2026_C000075901MemberoefClassAxis"
      id="ixv-24197">(800) 421-4225</oef:AddlInfoPhoneNumber>
    <oef:ExpensesTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075901MemberoefClassAxis"
      id="ixv-1028">&lt;div style="margin-bottom: 6pt;"&gt;&lt;div style="margin-top: 0; letter-spacing: normal; text-transform: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 13pt; color: rgb(0, 0, 0); margin-bottom: 0;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 13pt; color: rgb(0, 95, 158);font-weight:bolder;display:inline;width:100%;"&gt;What were the fund costs for the last six &lt;div style="display:inline;"&gt;months&lt;/div&gt;?&lt;/div&gt; (based on a hypothetical $10,000 investment)&lt;/div&gt;&lt;/div&gt;&lt;div style="margin-bottom: 4pt;"&gt;&lt;table style="text-align:start; break-inside: avoid; table-layout: auto; width: 100%; border-collapse: collapse; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt; margin-bottom: 3pt;"&gt;&lt;tr style="break-after: avoid; border-bottom-style: none; border-bottom-width: initial; break-inside: avoid-page; background-color: rgb(0, 95, 158); border-right-color: rgb(255, 255, 255); border-right-style: solid; border-right-width: 0.5pt; height: 19.008pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 126.9pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Share class&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 171.072pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 0px; font-size: 10pt; line-height: 10pt; width: 267.948pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: none;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs paid as a percentage of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: 20pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 126.9pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;Class 529-E&lt;/td&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 10pt; line-height: 10pt; text-align: center; width: 171.072pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;33&lt;/td&gt;&lt;td style="break-inside: avoid-page; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 267.948pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; vertical-align: bottom;"&gt;0.66&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;div style=";display:inline;vertical-align: super;font-size:9.2px"&gt;*&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;div style="margin-top: 0; font-weight: normal; font-family: 'Arial'; font-size: 8pt; line-height: 8.5pt; color: rgb(0, 0, 0); margin-bottom: 4pt;"&gt;*Annualized.&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="P10_01_2025To03_31_2026_C000075901MemberoefClassAxis"
      decimals="0"
      id="ixv-24198"
      unitRef="Unit_USD">33</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="P10_01_2025To03_31_2026_C000075901MemberoefClassAxis"
      decimals="INF"
      id="Fact_8002322"
      unitRef="Unit_pure">0.0066</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075901MemberoefClassAxis"
      id="ixv-1056">&lt;div style="text-transform: none; margin-bottom: 2.0016pt; font-family: 'Times New Roman'; font-weight: bold; font-size: 11pt; line-height: 11pt; letter-spacing: normal; color: rgb(0, 95, 158); margin-top: 18pt;"&gt;Key fund statistics&lt;/div&gt;&lt;table style="text-align:start; width: 100%; border-collapse: collapse; break-inside: avoid;"&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto; border-top-color: rgb(153, 153, 153); border-top-style: solid; border-top-width: 0.5pt;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Fund net assets (in &lt;div style="display:inline;"&gt;millions&lt;/div&gt;)&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;35,411&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Total number of portfolio holdings&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;157&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="PAsOn03_31_2026_C000075901MemberoefClassAxis"
      decimals="-6"
      id="ixv-24200"
      unitRef="Unit_USD">35411000000</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="PAsOn03_31_2026_C000075901MemberoefClassAxis"
      decimals="0"
      id="ixv-24201"
      unitRef="Unit_Holding">157</oef:HoldingsCount>
    <oef:HoldingsTableTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075901MemberoefClassAxis"
      id="ixv-1071">&lt;div style="border-bottom-width: initial; border-bottom-style: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 0, 0); margin-bottom: 2.0016pt; padding-bottom: 0; border-bottom-color: initial; padding-left: 27pt; margin-top: 18pt;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 95, 158); margin-top: 10pt; margin-bottom: 3pt; padding-bottom: 0; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;font-weight:bolder;display:inline;"&gt;Portfolio holdings by asset type&lt;/div&gt;&#160;(percent of net assets)&lt;/div&gt;&lt;table style="text-align:start; border-collapse: collapse; break-inside: avoid; margin-left: 27pt; width: 91%; margin-bottom: 10pt;"&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Short-term securities:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bills&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;44.78&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Federal agency bills &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;37.95&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Repurchase agreements&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;13.13&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Bonds, notes &amp;amp; other debt instruments:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bonds &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;6.37&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Other assets less liabilities&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; width: 40pt; padding-right: 0; padding-left: 0; line-height: 9pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt;(2.23&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;)&lt;/div&gt;&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Total&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: double; border-bottom-width: 2pt;"&gt;100.00&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075901MemberoefClassAxis_USTreasuryBillsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24202"
      unitRef="Unit_pure">0.4478</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075901MemberoefClassAxis_FederalAgencyBillsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24203"
      unitRef="Unit_pure">0.3795</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075901MemberoefClassAxis_RepurchaseAgreementsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24204"
      unitRef="Unit_pure">0.1313</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075901MemberoefClassAxis_USTreasuryBondsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24205"
      unitRef="Unit_pure">0.0637</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075901MemberoefClassAxis_OtherAssetsLessLiabilitiesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24206"
      unitRef="Unit_pure">-0.0223</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075901MemberoefClassAxis"
      decimals="INF"
      id="ixv-24207"
      unitRef="Unit_pure">1</oef:PctOfNav>
    <oef:FundName
      contextRef="P10_01_2025To03_31_2026_C000189452MemberoefClassAxis"
      id="ixv-1134">American Funds&#xae; U.S. Government Money Market Fund</oef:FundName>
    <oef:ClassName
      contextRef="P10_01_2025To03_31_2026_C000189452MemberoefClassAxis"
      id="ixv-24208">Class 529-T</oef:ClassName>
    <dei:TradingSymbol
      contextRef="P10_01_2025To03_31_2026_C000189452MemberoefClassAxis"
      id="ixv-24209">TSIXX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock
      contextRef="P10_01_2025To03_31_2026_C000189452MemberoefClassAxis"
      id="ixv-24210">This semi-annual shareholder report contains important information about American Funds U.S. Government Money Market Fund (the "fund") for the period from October 1, 2025 to March 31, 2026.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual
      contextRef="P10_01_2025To03_31_2026_C000189452MemberoefClassAxis"
      id="ixv-24211">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock
      contextRef="P10_01_2025To03_31_2026_C000189452MemberoefClassAxis"
      id="ixv-1141">You can find additional information about the fund at &lt;div style="text-decoration-line: underline; font-family: &amp;quot;Times New Roman&amp;quot;; color: rgb(0, 95, 158); font-size: 10pt; letter-spacing: -0.05pt; line-height: 15pt;display:inline;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;capitalgroup.com/mutual-fund-literature&lt;/div&gt;&lt;/div&gt;. You can also request this information by contacting us at &lt;br/&gt;(800) 421-4225.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite
      contextRef="P10_01_2025To03_31_2026_C000189452MemberoefClassAxis"
      id="ixv-24212">capitalgroup.com/mutual-fund-literature</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber
      contextRef="P10_01_2025To03_31_2026_C000189452MemberoefClassAxis"
      id="ixv-24213">(800) 421-4225</oef:AddlInfoPhoneNumber>
    <oef:ExpensesTextBlock
      contextRef="P10_01_2025To03_31_2026_C000189452MemberoefClassAxis"
      id="ixv-1146">&lt;div style="margin-bottom: 6pt;"&gt;&lt;div style="margin-top: 0; letter-spacing: normal; text-transform: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 13pt; color: rgb(0, 0, 0); margin-bottom: 0;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 13pt; color: rgb(0, 95, 158);font-weight:bolder;display:inline;width:100%;"&gt;What were the fund costs for the last six months?&lt;/div&gt; (&lt;div style="display:inline;"&gt;based&lt;/div&gt; on a hypothetical $10,000 investment)&lt;/div&gt;&lt;/div&gt;&lt;div style="margin-bottom: 4pt;"&gt;&lt;table style="text-align:start; break-inside: avoid; table-layout: auto; width: 100%; border-collapse: collapse; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt; margin-bottom: 3pt;"&gt;&lt;tr style="break-after: avoid; border-bottom-style: none; border-bottom-width: initial; break-inside: avoid-page; background-color: rgb(0, 95, 158); border-right-color: rgb(255, 255, 255); border-right-style: solid; border-right-width: 0.5pt; height: 19.008pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 126.9pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Share class&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 171.072pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 0px; font-size: 10pt; line-height: 10pt; width: 267.948pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: none;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs paid as a percentage of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: 20pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 126.9pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;Class 529-T&lt;/td&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 10pt; line-height: 10pt; text-align: center; width: 171.072pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;22&lt;/td&gt;&lt;td style="break-inside: avoid-page; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 267.948pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; vertical-align: bottom;"&gt;0.43&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;div style=";display:inline;vertical-align: super;font-size:9.2px"&gt;*&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;div style="margin-top: 0; font-weight: normal; font-family: 'Arial'; font-size: 8pt; line-height: 8.5pt; color: rgb(0, 0, 0); margin-bottom: 4pt;"&gt;*Annualized.&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="P10_01_2025To03_31_2026_C000189452MemberoefClassAxis"
      decimals="0"
      id="ixv-24214"
      unitRef="Unit_USD">22</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="P10_01_2025To03_31_2026_C000189452MemberoefClassAxis"
      decimals="INF"
      id="Fact_8002330"
      unitRef="Unit_pure">0.0043</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock
      contextRef="P10_01_2025To03_31_2026_C000189452MemberoefClassAxis"
      id="ixv-1174">&lt;div style="text-transform: none; margin-bottom: 2.0016pt; font-family: 'Times New Roman'; font-weight: bold; font-size: 11pt; line-height: 11pt; letter-spacing: normal; color: rgb(0, 95, 158); margin-top: 18pt;"&gt;Key fund statistics&lt;/div&gt;&lt;table style="text-align:start; width: 100%; border-collapse: collapse; break-inside: avoid;"&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto; border-top-color: rgb(153, 153, 153); border-top-style: solid; border-top-width: 0.5pt;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Fund net assets (in millions)&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;35,411&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Total number of portfolio holdings&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;157&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="PAsOn03_31_2026_C000189452MemberoefClassAxis"
      decimals="-6"
      id="ixv-24216"
      unitRef="Unit_USD">35411000000</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="PAsOn03_31_2026_C000189452MemberoefClassAxis"
      decimals="0"
      id="ixv-24217"
      unitRef="Unit_Holding">157</oef:HoldingsCount>
    <oef:HoldingsTableTextBlock
      contextRef="P10_01_2025To03_31_2026_C000189452MemberoefClassAxis"
      id="ixv-1188">&lt;div style="border-bottom-width: initial; border-bottom-style: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 0, 0); margin-bottom: 2.0016pt; padding-bottom: 0; border-bottom-color: initial; padding-left: 27pt; margin-top: 18pt;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 95, 158); margin-top: 10pt; margin-bottom: 3pt; padding-bottom: 0; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;font-weight:bolder;display:inline;"&gt;Portfolio holdings by asset type&lt;/div&gt;&#160;(percent of net assets)&lt;/div&gt;&lt;table style="text-align:start; border-collapse: collapse; break-inside: avoid; margin-left: 27pt; width: 91%; margin-bottom: 10pt;"&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Short-term securities:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bills&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;44.78&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Federal agency bills &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;37.95&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Repurchase agreements&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;13.13&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Bonds, notes &amp;amp; other debt instruments:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bonds &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;6.37&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Other assets less liabilities&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; width: 40pt; padding-right: 0; padding-left: 0; line-height: 9pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt;(2.23&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;)&lt;/div&gt;&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Total&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: double; border-bottom-width: 2pt;"&gt;100.00&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000189452MemberoefClassAxis_USTreasuryBillsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24218"
      unitRef="Unit_pure">0.4478</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000189452MemberoefClassAxis_FederalAgencyBillsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24219"
      unitRef="Unit_pure">0.3795</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000189452MemberoefClassAxis_RepurchaseAgreementsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24220"
      unitRef="Unit_pure">0.1313</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000189452MemberoefClassAxis_USTreasuryBondsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24221"
      unitRef="Unit_pure">0.0637</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000189452MemberoefClassAxis_OtherAssetsLessLiabilitiesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24222"
      unitRef="Unit_pure">-0.0223</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000189452MemberoefClassAxis"
      decimals="INF"
      id="ixv-24223"
      unitRef="Unit_pure">1</oef:PctOfNav>
    <oef:FundName
      contextRef="P10_01_2025To03_31_2026_C000075887MemberoefClassAxis"
      id="ixv-1252">American Funds&#xae; U.S. Government Money Market Fund</oef:FundName>
    <oef:ClassName
      contextRef="P10_01_2025To03_31_2026_C000075887MemberoefClassAxis"
      id="ixv-24224">Class 529-F-1</oef:ClassName>
    <dei:TradingSymbol
      contextRef="P10_01_2025To03_31_2026_C000075887MemberoefClassAxis"
      id="ixv-24225">FARXX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075887MemberoefClassAxis"
      id="ixv-24226">This semi-annual shareholder report contains important information about American Funds U.S. Government Money Market Fund (the "fund") for the period from October 1, 2025 to March 31, 2026.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual
      contextRef="P10_01_2025To03_31_2026_C000075887MemberoefClassAxis"
      id="ixv-24227">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075887MemberoefClassAxis"
      id="ixv-1259">You can find additional information about the fund at &lt;div style="text-decoration-line: underline; font-family: &amp;quot;Times New Roman&amp;quot;; color: rgb(0, 95, 158); font-size: 10pt; letter-spacing: -0.05pt; line-height: 15pt;display:inline;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;capitalgroup.com/mutual-fund-literature-529F1&lt;/div&gt;&lt;/div&gt;. You can also request this information by contacting us at &lt;br/&gt;(800) 421-4225.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite
      contextRef="P10_01_2025To03_31_2026_C000075887MemberoefClassAxis"
      id="ixv-24228">capitalgroup.com/mutual-fund-literature-529F1</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber
      contextRef="P10_01_2025To03_31_2026_C000075887MemberoefClassAxis"
      id="ixv-24229">(800) 421-4225</oef:AddlInfoPhoneNumber>
    <oef:ExpensesTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075887MemberoefClassAxis"
      id="ixv-1264">&lt;div style="margin-bottom: 6pt;"&gt;&lt;div style="margin-top: 0; letter-spacing: normal; text-transform: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 13pt; color: rgb(0, 0, 0); margin-bottom: 0;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 13pt; color: rgb(0, 95, 158);font-weight:bolder;display:inline;width:100%;"&gt;What were the fund costs &lt;div style="display:inline;"&gt;for &lt;/div&gt;the last six months?&lt;/div&gt; (based on a hypothetical $10,000 investment)&lt;/div&gt;&lt;/div&gt;&lt;div style="margin-bottom: 4pt;"&gt;&lt;table style="text-align:start; break-inside: avoid; table-layout: auto; width: 100%; border-collapse: collapse; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt; margin-bottom: 3pt;"&gt;&lt;tr style="break-after: avoid; border-bottom-style: none; border-bottom-width: initial; break-inside: avoid-page; background-color: rgb(0, 95, 158); border-right-color: rgb(255, 255, 255); border-right-style: solid; border-right-width: 0.5pt; height: 19.008pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 126.9pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Share class&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 171.072pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 0px; font-size: 10pt; line-height: 10pt; width: 267.948pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: none;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs paid as a percentage of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: 20pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 126.9pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;Class 529-F-1&lt;/td&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 10pt; line-height: 10pt; text-align: center; width: 171.072pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;24&lt;/td&gt;&lt;td style="break-inside: avoid-page; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 267.948pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; vertical-align: bottom;"&gt;0.48&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;div style=";display:inline;vertical-align: super;font-size:9.2px"&gt;*&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;div style="margin-top: 0; font-weight: normal; font-family: 'Arial'; font-size: 8pt; line-height: 8.5pt; color: rgb(0, 0, 0); margin-bottom: 4pt;"&gt;*Annualized.&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="P10_01_2025To03_31_2026_C000075887MemberoefClassAxis"
      decimals="0"
      id="ixv-24230"
      unitRef="Unit_USD">24</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="P10_01_2025To03_31_2026_C000075887MemberoefClassAxis"
      decimals="INF"
      id="Fact_8002338"
      unitRef="Unit_pure">0.0048</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075887MemberoefClassAxis"
      id="ixv-1292">&lt;div style="text-transform: none; margin-bottom: 2.0016pt; font-family: 'Times New Roman'; font-weight: bold; font-size: 11pt; line-height: 11pt; letter-spacing: normal; color: rgb(0, 95, 158); margin-top: 18pt;"&gt;Key fund statistics&lt;/div&gt;&lt;table style="text-align:start; width: 100%; border-collapse: collapse; break-inside: avoid;"&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto; border-top-color: rgb(153, 153, 153); border-top-style: solid; border-top-width: 0.5pt;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Fund net assets (in millions)&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;35,411&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Total number of portfolio holdings&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;157&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="PAsOn03_31_2026_C000075887MemberoefClassAxis"
      decimals="-6"
      id="ixv-24232"
      unitRef="Unit_USD">35411000000</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="PAsOn03_31_2026_C000075887MemberoefClassAxis"
      decimals="0"
      id="ixv-24233"
      unitRef="Unit_Holding">157</oef:HoldingsCount>
    <oef:HoldingsTableTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075887MemberoefClassAxis"
      id="ixv-1306">&lt;div style="border-bottom-width: initial; border-bottom-style: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 0, 0); margin-bottom: 2.0016pt; padding-bottom: 0; border-bottom-color: initial; padding-left: 27pt; margin-top: 18pt;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 95, 158); margin-top: 10pt; margin-bottom: 3pt; padding-bottom: 0; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;font-weight:bolder;display:inline;"&gt;Portfolio holdings by asset type&lt;/div&gt;&#160;(percent of net assets)&lt;/div&gt;&lt;table style="text-align:start; border-collapse: collapse; break-inside: avoid; margin-left: 27pt; width: 91%; margin-bottom: 10pt;"&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Short-term securities:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bills&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;44.78&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Federal agency bills &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;37.95&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Repurchase agreements&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;13.13&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Bonds, notes &amp;amp; other debt instruments:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bonds &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;6.37&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Other assets less liabilities&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; width: 40pt; padding-right: 0; padding-left: 0; line-height: 9pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt;(2.23&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;)&lt;/div&gt;&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Total&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: double; border-bottom-width: 2pt;"&gt;100.00&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075887MemberoefClassAxis_USTreasuryBillsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24234"
      unitRef="Unit_pure">0.4478</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075887MemberoefClassAxis_FederalAgencyBillsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24235"
      unitRef="Unit_pure">0.3795</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075887MemberoefClassAxis_RepurchaseAgreementsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24236"
      unitRef="Unit_pure">0.1313</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075887MemberoefClassAxis_USTreasuryBondsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24237"
      unitRef="Unit_pure">0.0637</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075887MemberoefClassAxis_OtherAssetsLessLiabilitiesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24238"
      unitRef="Unit_pure">-0.0223</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075887MemberoefClassAxis"
      decimals="INF"
      id="ixv-24239"
      unitRef="Unit_pure">1</oef:PctOfNav>
    <oef:FundName
      contextRef="P10_01_2025To03_31_2026_C000224559MemberoefClassAxis"
      id="ixv-1370">American Funds&#xae; U.S. Government Money Market Fund</oef:FundName>
    <oef:ClassName
      contextRef="P10_01_2025To03_31_2026_C000224559MemberoefClassAxis"
      id="ixv-24240">Class 529-F-2</oef:ClassName>
    <dei:TradingSymbol
      contextRef="P10_01_2025To03_31_2026_C000224559MemberoefClassAxis"
      id="ixv-24241">FFFXX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock
      contextRef="P10_01_2025To03_31_2026_C000224559MemberoefClassAxis"
      id="ixv-24242">This semi-annual shareholder report contains important information about American Funds U.S. Government Money Market Fund (the "fund") for the period from October 1, 2025 to March 31, 2026.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual
      contextRef="P10_01_2025To03_31_2026_C000224559MemberoefClassAxis"
      id="ixv-24243">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock
      contextRef="P10_01_2025To03_31_2026_C000224559MemberoefClassAxis"
      id="ixv-1377">You can find additional information about the fund at &lt;div style="text-decoration-line: underline; font-family: &amp;quot;Times New Roman&amp;quot;; color: rgb(0, 95, 158); font-size: 10pt; letter-spacing: -0.05pt; line-height: 15pt;display:inline;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;capitalgroup.com/mutual-fund-literature-529F2&lt;/div&gt;&lt;/div&gt;. You can also request this information by contacting us at &lt;br/&gt;(800) 421-4225.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite
      contextRef="P10_01_2025To03_31_2026_C000224559MemberoefClassAxis"
      id="ixv-24244">capitalgroup.com/mutual-fund-literature-529F2</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber
      contextRef="P10_01_2025To03_31_2026_C000224559MemberoefClassAxis"
      id="ixv-24245">(800) 421-4225</oef:AddlInfoPhoneNumber>
    <oef:ExpensesTextBlock
      contextRef="P10_01_2025To03_31_2026_C000224559MemberoefClassAxis"
      id="ixv-1382">&lt;div style="margin-bottom: 6pt;"&gt;&lt;div style="margin-top: 0; letter-spacing: normal; text-transform: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 13pt; color: rgb(0, 0, 0); margin-bottom: 0;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 13pt; color: rgb(0, 95, 158);font-weight:bolder;display:inline;width:100%;"&gt;What were the fund &lt;div style="display:inline;"&gt;costs&lt;/div&gt; for the last six months?&lt;/div&gt; (based on a hypothetical $10,000 investment)&lt;/div&gt;&lt;/div&gt;&lt;div style="margin-bottom: 4pt;"&gt;&lt;table style="text-align:start; break-inside: avoid; table-layout: auto; width: 100%; border-collapse: collapse; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt; margin-bottom: 3pt;"&gt;&lt;tr style="break-after: avoid; border-bottom-style: none; border-bottom-width: initial; break-inside: avoid-page; background-color: rgb(0, 95, 158); border-right-color: rgb(255, 255, 255); border-right-style: solid; border-right-width: 0.5pt; height: 19.008pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 126.9pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Share class&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 171.072pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 0px; font-size: 10pt; line-height: 10pt; width: 267.948pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: none;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs paid as a percentage of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: 20pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 126.9pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;Class 529-F-2&lt;/td&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 10pt; line-height: 10pt; text-align: center; width: 171.072pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;21&lt;/td&gt;&lt;td style="break-inside: avoid-page; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 267.948pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; vertical-align: bottom;"&gt;0.42&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;div style=";display:inline;vertical-align: super;font-size:9.2px"&gt;*&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;div style="margin-top: 0; font-weight: normal; font-family: 'Arial'; font-size: 8pt; line-height: 8.5pt; color: rgb(0, 0, 0); margin-bottom: 4pt;"&gt;*Annualized.&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="P10_01_2025To03_31_2026_C000224559MemberoefClassAxis"
      decimals="0"
      id="ixv-24246"
      unitRef="Unit_USD">21</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="P10_01_2025To03_31_2026_C000224559MemberoefClassAxis"
      decimals="INF"
      id="Fact_8002496"
      unitRef="Unit_pure">0.0042</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock
      contextRef="P10_01_2025To03_31_2026_C000224559MemberoefClassAxis"
      id="ixv-1410">&lt;div style="text-transform: none; margin-bottom: 2.0016pt; font-family: 'Times New Roman'; font-weight: bold; font-size: 11pt; line-height: 11pt; letter-spacing: normal; color: rgb(0, 95, 158); margin-top: 18pt;"&gt;Key fund statistics&lt;/div&gt;&lt;table style="text-align:start; width: 100%; border-collapse: collapse; break-inside: avoid;"&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto; border-top-color: rgb(153, 153, 153); border-top-style: solid; border-top-width: 0.5pt;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Fund net assets (in millions)&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;35,411&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Total number of portfolio holdings&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;157&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="PAsOn03_31_2026_C000224559MemberoefClassAxis"
      decimals="-6"
      id="ixv-24248"
      unitRef="Unit_USD">35411000000</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="PAsOn03_31_2026_C000224559MemberoefClassAxis"
      decimals="0"
      id="ixv-24249"
      unitRef="Unit_Holding">157</oef:HoldingsCount>
    <oef:HoldingsTableTextBlock
      contextRef="P10_01_2025To03_31_2026_C000224559MemberoefClassAxis"
      id="ixv-1424">&lt;div style="border-bottom-width: initial; border-bottom-style: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 0, 0); margin-bottom: 2.0016pt; padding-bottom: 0; border-bottom-color: initial; padding-left: 27pt; margin-top: 18pt;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 95, 158); margin-top: 10pt; margin-bottom: 3pt; padding-bottom: 0; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;font-weight:bolder;display:inline;"&gt;Portfolio holdings by asset type&lt;/div&gt;&#160;(percent of net assets)&lt;/div&gt;&lt;table style="text-align:start; border-collapse: collapse; break-inside: avoid; margin-left: 27pt; width: 91%; margin-bottom: 10pt;"&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Short-term securities:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bills&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;44.78&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Federal agency bills &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;37.95&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Repurchase agreements&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;13.13&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Bonds, notes &amp;amp; other debt instruments:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bonds &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;6.37&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Other assets less liabilities&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; width: 40pt; padding-right: 0; padding-left: 0; line-height: 9pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt;(2.23&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;)&lt;/div&gt;&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Total&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: double; border-bottom-width: 2pt;"&gt;100.00&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000224559MemberoefClassAxis_USTreasuryBillsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24250"
      unitRef="Unit_pure">0.4478</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000224559MemberoefClassAxis_FederalAgencyBillsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24251"
      unitRef="Unit_pure">0.3795</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000224559MemberoefClassAxis_RepurchaseAgreementsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24252"
      unitRef="Unit_pure">0.1313</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000224559MemberoefClassAxis_USTreasuryBondsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24253"
      unitRef="Unit_pure">0.0637</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000224559MemberoefClassAxis_OtherAssetsLessLiabilitiesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24254"
      unitRef="Unit_pure">-0.0223</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000224559MemberoefClassAxis"
      decimals="INF"
      id="ixv-24255"
      unitRef="Unit_pure">1</oef:PctOfNav>
    <oef:FundName
      contextRef="P10_01_2025To03_31_2026_C000224560MemberoefClassAxis"
      id="ixv-1488">American Funds&#xae; U.S. Government Money Market Fund</oef:FundName>
    <oef:ClassName
      contextRef="P10_01_2025To03_31_2026_C000224560MemberoefClassAxis"
      id="ixv-24256">Class 529-F-3</oef:ClassName>
    <dei:TradingSymbol
      contextRef="P10_01_2025To03_31_2026_C000224560MemberoefClassAxis"
      id="ixv-24257">FMUXX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock
      contextRef="P10_01_2025To03_31_2026_C000224560MemberoefClassAxis"
      id="ixv-24258">This semi-annual shareholder report contains important information about American Funds U.S. Government Money Market Fund (the "fund") for the period from October 1, 2025 to March 31, 2026.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual
      contextRef="P10_01_2025To03_31_2026_C000224560MemberoefClassAxis"
      id="ixv-24259">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock
      contextRef="P10_01_2025To03_31_2026_C000224560MemberoefClassAxis"
      id="ixv-1495">You can find additional information about the fund at &lt;div style="text-decoration-line: underline; font-family: &amp;quot;Times New Roman&amp;quot;; color: rgb(0, 95, 158); font-size: 10pt; letter-spacing: -0.05pt; line-height: 15pt;display:inline;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;capitalgroup.com/mutual-fund-literature-529F3&lt;/div&gt;&lt;/div&gt;. You can also request this information by contacting us at &lt;br/&gt;(800) 421-4225.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite
      contextRef="P10_01_2025To03_31_2026_C000224560MemberoefClassAxis"
      id="ixv-24260">capitalgroup.com/mutual-fund-literature-529F3</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber
      contextRef="P10_01_2025To03_31_2026_C000224560MemberoefClassAxis"
      id="ixv-24261">(800) 421-4225</oef:AddlInfoPhoneNumber>
    <oef:ExpensesTextBlock
      contextRef="P10_01_2025To03_31_2026_C000224560MemberoefClassAxis"
      id="ixv-1500">&lt;div style="margin-bottom: 6pt;"&gt;&lt;div style="margin-top: 0; letter-spacing: normal; text-transform: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 13pt; color: rgb(0, 0, 0); margin-bottom: 0;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 13pt; color: rgb(0, 95, 158);font-weight:bolder;display:inline;width:100%;"&gt;What were the fund costs for the last six m&lt;div style="display:inline;"&gt;onth&lt;/div&gt;s?&lt;/div&gt; (based on a hypothetical $10,000 investment)&lt;/div&gt;&lt;/div&gt;&lt;div style="margin-bottom: 4pt;"&gt;&lt;table style="text-align:start; break-inside: avoid; table-layout: auto; width: 100%; border-collapse: collapse; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt; margin-bottom: 3pt;"&gt;&lt;tr style="break-after: avoid; border-bottom-style: none; border-bottom-width: initial; break-inside: avoid-page; background-color: rgb(0, 95, 158); border-right-color: rgb(255, 255, 255); border-right-style: solid; border-right-width: 0.5pt; height: 19.008pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 126.9pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Share class&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 171.072pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 0px; font-size: 10pt; line-height: 10pt; width: 267.948pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: none;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs paid as a percentage of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: 20pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 126.9pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;Class 529-F-3&lt;/td&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 10pt; line-height: 10pt; text-align: center; width: 171.072pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;18&lt;/td&gt;&lt;td style="break-inside: avoid-page; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 267.948pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; vertical-align: bottom;"&gt;0.36&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;div style=";display:inline;vertical-align: super;font-size:9.2px"&gt;*&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;div style="margin-top: 0; font-weight: normal; font-family: 'Arial'; font-size: 8pt; line-height: 8.5pt; color: rgb(0, 0, 0); margin-bottom: 4pt;"&gt;*Annualized.&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="P10_01_2025To03_31_2026_C000224560MemberoefClassAxis"
      decimals="0"
      id="ixv-24262"
      unitRef="Unit_USD">18</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="P10_01_2025To03_31_2026_C000224560MemberoefClassAxis"
      decimals="INF"
      id="Fact_8002504"
      unitRef="Unit_pure">0.0036</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock
      contextRef="P10_01_2025To03_31_2026_C000224560MemberoefClassAxis"
      id="ixv-1528">&lt;div style="text-transform: none; margin-bottom: 2.0016pt; font-family: 'Times New Roman'; font-weight: bold; font-size: 11pt; line-height: 11pt; letter-spacing: normal; color: rgb(0, 95, 158); margin-top: 18pt;"&gt;Key &lt;div style="display:inline;"&gt;fund&lt;/div&gt; statistics&lt;/div&gt;&lt;table style="text-align:start; width: 100%; border-collapse: collapse; break-inside: avoid;"&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto; border-top-color: rgb(153, 153, 153); border-top-style: solid; border-top-width: 0.5pt;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Fund net assets (in millions)&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;35,411&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Total number of portfolio holdings&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;157&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="PAsOn03_31_2026_C000224560MemberoefClassAxis"
      decimals="-6"
      id="ixv-24264"
      unitRef="Unit_USD">35411000000</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="PAsOn03_31_2026_C000224560MemberoefClassAxis"
      decimals="0"
      id="ixv-24265"
      unitRef="Unit_Holding">157</oef:HoldingsCount>
    <oef:HoldingsTableTextBlock
      contextRef="P10_01_2025To03_31_2026_C000224560MemberoefClassAxis"
      id="ixv-1543">&lt;div style="border-bottom-width: initial; border-bottom-style: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 0, 0); margin-bottom: 2.0016pt; padding-bottom: 0; border-bottom-color: initial; padding-left: 27pt; margin-top: 18pt;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 95, 158); margin-top: 10pt; margin-bottom: 3pt; padding-bottom: 0; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;font-weight:bolder;display:inline;"&gt;Portfolio holdings by asset type&lt;/div&gt;&#160;(percent of net assets)&lt;/div&gt;&lt;table style="text-align:start; border-collapse: collapse; break-inside: avoid; margin-left: 27pt; width: 91%; margin-bottom: 10pt;"&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Short-term securities:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bills&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;44.78&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Federal agency bills &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;37.95&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Repurchase agreements&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;13.13&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Bonds, notes &amp;amp; other debt instruments:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bonds &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;6.37&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Other assets less liabilities&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; width: 40pt; padding-right: 0; padding-left: 0; line-height: 9pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt;(2.23&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;)&lt;/div&gt;&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Total&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: double; border-bottom-width: 2pt;"&gt;100.00&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000224560MemberoefClassAxis_USTreasuryBillsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24266"
      unitRef="Unit_pure">0.4478</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000224560MemberoefClassAxis_FederalAgencyBillsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24267"
      unitRef="Unit_pure">0.3795</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000224560MemberoefClassAxis_RepurchaseAgreementsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24268"
      unitRef="Unit_pure">0.1313</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000224560MemberoefClassAxis_USTreasuryBondsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24269"
      unitRef="Unit_pure">0.0637</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000224560MemberoefClassAxis_OtherAssetsLessLiabilitiesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24270"
      unitRef="Unit_pure">-0.0223</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000224560MemberoefClassAxis"
      decimals="INF"
      id="ixv-24271"
      unitRef="Unit_pure">1</oef:PctOfNav>
    <oef:FundName
      contextRef="P10_01_2025To03_31_2026_C000202065MemberoefClassAxis"
      id="ixv-1606">American Funds&#xae; U.S. Government Money Market Fund</oef:FundName>
    <oef:ClassName
      contextRef="P10_01_2025To03_31_2026_C000202065MemberoefClassAxis"
      id="ixv-24272">Class ABLE-A</oef:ClassName>
    <dei:TradingSymbol
      contextRef="P10_01_2025To03_31_2026_C000202065MemberoefClassAxis"
      id="ixv-24273">AAZXX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock
      contextRef="P10_01_2025To03_31_2026_C000202065MemberoefClassAxis"
      id="ixv-24274">This semi-annual shareholder report contains important information about American Funds U.S. Government Money Market Fund (the "fund") for the period from October 1, 2025 to March 31, 2026.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual
      contextRef="P10_01_2025To03_31_2026_C000202065MemberoefClassAxis"
      id="ixv-24275">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock
      contextRef="P10_01_2025To03_31_2026_C000202065MemberoefClassAxis"
      id="ixv-1613">You can find additional information about the fund at &lt;div style="text-decoration-line: underline; font-family: &amp;quot;Times New Roman&amp;quot;; color: rgb(0, 95, 158); font-size: 10pt; letter-spacing: -0.05pt; line-height: 15pt;display:inline;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;capitalgroup.com/mutual-fund-literature-ABLEA&lt;/div&gt;&lt;/div&gt;. You can also request this information by contacting us at &lt;br/&gt;(800) 421-4225.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite
      contextRef="P10_01_2025To03_31_2026_C000202065MemberoefClassAxis"
      id="ixv-24276">capitalgroup.com/mutual-fund-literature-ABLEA</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber
      contextRef="P10_01_2025To03_31_2026_C000202065MemberoefClassAxis"
      id="ixv-24277">(800) 421-4225</oef:AddlInfoPhoneNumber>
    <oef:ExpensesTextBlock
      contextRef="P10_01_2025To03_31_2026_C000202065MemberoefClassAxis"
      id="ixv-1618">&lt;div style="margin-bottom: 6pt;"&gt;&lt;div style="margin-top: 0; letter-spacing: normal; text-transform: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 13pt; color: rgb(0, 0, 0); margin-bottom: 0;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 13pt; color: rgb(0, 95, 158);font-weight:bolder;display:inline;width:100%;"&gt;What were the fund costs for the last six months?&lt;/div&gt; (based on a &lt;div style="display:inline;"&gt;hypothetical&lt;/div&gt; $10,000 investment)&lt;/div&gt;&lt;/div&gt;&lt;div style="margin-bottom: 4pt;"&gt;&lt;table style="text-align:start; break-inside: avoid; table-layout: auto; width: 100%; border-collapse: collapse; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt; margin-bottom: 3pt;"&gt;&lt;tr style="break-after: avoid; border-bottom-style: none; border-bottom-width: initial; break-inside: avoid-page; background-color: rgb(0, 95, 158); border-right-color: rgb(255, 255, 255); border-right-style: solid; border-right-width: 0.5pt; height: 19.008pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 126.9pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Share class&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 171.072pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 0px; font-size: 10pt; line-height: 10pt; width: 267.948pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: none;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs paid as a percentage of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: 20pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 126.9pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;Class ABLE-A&lt;/td&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 10pt; line-height: 10pt; text-align: center; width: 171.072pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;23&lt;/td&gt;&lt;td style="break-inside: avoid-page; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 267.948pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; vertical-align: bottom;"&gt;0.46&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;div style=";display:inline;vertical-align: super;font-size:9.2px"&gt;*&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;div style="margin-top: 0; font-weight: normal; font-family: 'Arial'; font-size: 8pt; line-height: 8.5pt; color: rgb(0, 0, 0); margin-bottom: 4pt;"&gt;*Annualized.&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="P10_01_2025To03_31_2026_C000202065MemberoefClassAxis"
      decimals="0"
      id="ixv-24278"
      unitRef="Unit_USD">23</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="P10_01_2025To03_31_2026_C000202065MemberoefClassAxis"
      decimals="INF"
      id="Fact_8002512"
      unitRef="Unit_pure">0.0046</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock
      contextRef="P10_01_2025To03_31_2026_C000202065MemberoefClassAxis"
      id="ixv-1646">&lt;div style="text-transform: none; margin-bottom: 2.0016pt; font-family: 'Times New Roman'; font-weight: bold; font-size: 11pt; line-height: 11pt; letter-spacing: normal; color: rgb(0, 95, 158); margin-top: 18pt;"&gt;Key fund statistics&lt;/div&gt;&lt;table style="text-align:start; width: 100%; border-collapse: collapse; break-inside: avoid;"&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto; border-top-color: rgb(153, 153, 153); border-top-style: solid; border-top-width: 0.5pt;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Fund net assets (in millions)&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;35,411&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Total number of portfolio holdings&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;157&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="PAsOn03_31_2026_C000202065MemberoefClassAxis"
      decimals="-6"
      id="ixv-24280"
      unitRef="Unit_USD">35411000000</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="PAsOn03_31_2026_C000202065MemberoefClassAxis"
      decimals="0"
      id="ixv-24281"
      unitRef="Unit_Holding">157</oef:HoldingsCount>
    <oef:HoldingsTableTextBlock
      contextRef="P10_01_2025To03_31_2026_C000202065MemberoefClassAxis"
      id="ixv-1660">&lt;div style="border-bottom-width: initial; border-bottom-style: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 0, 0); margin-bottom: 2.0016pt; padding-bottom: 0; border-bottom-color: initial; padding-left: 27pt; margin-top: 18pt;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 95, 158); margin-top: 10pt; margin-bottom: 3pt; padding-bottom: 0; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;font-weight:bolder;display:inline;"&gt;&lt;div style="display:inline;"&gt;Portfolio&lt;/div&gt; holdings by asset type&lt;/div&gt;&#160;(percent of net assets)&lt;/div&gt;&lt;table style="text-align:start; border-collapse: collapse; break-inside: avoid; margin-left: 27pt; width: 91%; margin-bottom: 10pt;"&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Short-term securities:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bills&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;44.78&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Federal agency bills &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;37.95&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Repurchase agreements&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;13.13&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Bonds, notes &amp;amp; other debt instruments:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bonds &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;6.37&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Other assets less liabilities&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; width: 40pt; padding-right: 0; padding-left: 0; line-height: 9pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt;(2.23&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;)&lt;/div&gt;&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Total&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: double; border-bottom-width: 2pt;"&gt;100.00&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000202065MemberoefClassAxis_USTreasuryBillsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24282"
      unitRef="Unit_pure">0.4478</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000202065MemberoefClassAxis_FederalAgencyBillsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24283"
      unitRef="Unit_pure">0.3795</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000202065MemberoefClassAxis_RepurchaseAgreementsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24284"
      unitRef="Unit_pure">0.1313</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000202065MemberoefClassAxis_USTreasuryBondsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24285"
      unitRef="Unit_pure">0.0637</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000202065MemberoefClassAxis_OtherAssetsLessLiabilitiesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24286"
      unitRef="Unit_pure">-0.0223</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000202065MemberoefClassAxis"
      decimals="INF"
      id="ixv-24287"
      unitRef="Unit_pure">1</oef:PctOfNav>
    <oef:FundName
      contextRef="P10_01_2025To03_31_2026_C000224794MemberoefClassAxis"
      id="ixv-1724">American Funds&#xae; U.S. Government Money Market Fund</oef:FundName>
    <oef:ClassName
      contextRef="P10_01_2025To03_31_2026_C000224794MemberoefClassAxis"
      id="ixv-24288">Class ABLE-F-2</oef:ClassName>
    <dei:TradingSymbol
      contextRef="P10_01_2025To03_31_2026_C000224794MemberoefClassAxis"
      id="ixv-24289">ABZXX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock
      contextRef="P10_01_2025To03_31_2026_C000224794MemberoefClassAxis"
      id="ixv-24290">This semi-annual shareholder report contains important information about American Funds U.S. Government Money Market Fund (the "fund") for the period from October 1, 2025 to March 31, 2026.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual
      contextRef="P10_01_2025To03_31_2026_C000224794MemberoefClassAxis"
      id="ixv-24291">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock
      contextRef="P10_01_2025To03_31_2026_C000224794MemberoefClassAxis"
      id="ixv-1731">You can find additional information about the fund at &lt;div style="text-decoration-line: underline; font-family: &amp;quot;Times New Roman&amp;quot;; color: rgb(0, 95, 158); font-size: 10pt; letter-spacing: -0.05pt; line-height: 15pt;display:inline;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;capitalgroup.com/mutual-fund-literature-ABLEF2&lt;/div&gt;&lt;/div&gt;. You can also request this information by contacting us at &lt;br/&gt;(800) 421-4225.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite
      contextRef="P10_01_2025To03_31_2026_C000224794MemberoefClassAxis"
      id="ixv-24292">capitalgroup.com/mutual-fund-literature-ABLEF2</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber
      contextRef="P10_01_2025To03_31_2026_C000224794MemberoefClassAxis"
      id="ixv-24293">(800) 421-4225</oef:AddlInfoPhoneNumber>
    <oef:ExpensesTextBlock
      contextRef="P10_01_2025To03_31_2026_C000224794MemberoefClassAxis"
      id="ixv-1736">&lt;div style="margin-bottom: 6pt;"&gt;&lt;div style="margin-top: 0; letter-spacing: normal; text-transform: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 13pt; color: rgb(0, 0, 0); margin-bottom: 0;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 13pt; color: rgb(0, 95, 158);font-weight:bolder;display:inline;width:100%;"&gt;What were the fund costs for the last six months?&lt;/div&gt; (&lt;div style="display:inline;"&gt;based&lt;/div&gt; on a hypothetical $10,000 investment)&lt;/div&gt;&lt;/div&gt;&lt;div style="margin-bottom: 4pt;"&gt;&lt;table style="text-align:start; break-inside: avoid; table-layout: auto; width: 100%; border-collapse: collapse; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt; margin-bottom: 3pt;"&gt;&lt;tr style="break-after: avoid; border-bottom-style: none; border-bottom-width: initial; break-inside: avoid-page; background-color: rgb(0, 95, 158); border-right-color: rgb(255, 255, 255); border-right-style: solid; border-right-width: 0.5pt; height: 19.008pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 126.9pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Share class&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 171.072pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 0px; font-size: 10pt; line-height: 10pt; width: 267.948pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: none;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs paid as a percentage of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: 20pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 126.9pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;Class ABLE-F-2&lt;/td&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 10pt; line-height: 10pt; text-align: center; width: 171.072pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;18&lt;/td&gt;&lt;td style="break-inside: avoid-page; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 267.948pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; vertical-align: bottom;"&gt;0.35&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;div style=";display:inline;vertical-align: super;font-size:9.2px"&gt;*&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;div style="margin-top: 0; font-weight: normal; font-family: 'Arial'; font-size: 8pt; line-height: 8.5pt; color: rgb(0, 0, 0); margin-bottom: 4pt;"&gt;*Annualized.&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="P10_01_2025To03_31_2026_C000224794MemberoefClassAxis"
      decimals="0"
      id="ixv-24294"
      unitRef="Unit_USD">18</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="P10_01_2025To03_31_2026_C000224794MemberoefClassAxis"
      decimals="INF"
      id="Fact_8002520"
      unitRef="Unit_pure">0.0035</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock
      contextRef="P10_01_2025To03_31_2026_C000224794MemberoefClassAxis"
      id="ixv-1764">&lt;div style="text-transform: none; margin-bottom: 2.0016pt; font-family: 'Times New Roman'; font-weight: bold; font-size: 11pt; line-height: 11pt; letter-spacing: normal; color: rgb(0, 95, 158); margin-top: 18pt;"&gt;Key fund statistics&lt;/div&gt;&lt;table style="text-align:start; width: 100%; border-collapse: collapse; break-inside: avoid;"&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto; border-top-color: rgb(153, 153, 153); border-top-style: solid; border-top-width: 0.5pt;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Fund net assets (in millions)&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;35,411&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Total number of portfolio holdings&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;157&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="PAsOn03_31_2026_C000224794MemberoefClassAxis"
      decimals="-6"
      id="ixv-24296"
      unitRef="Unit_USD">35411000000</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="PAsOn03_31_2026_C000224794MemberoefClassAxis"
      decimals="0"
      id="ixv-24297"
      unitRef="Unit_Holding">157</oef:HoldingsCount>
    <oef:HoldingsTableTextBlock
      contextRef="P10_01_2025To03_31_2026_C000224794MemberoefClassAxis"
      id="ixv-1778">&lt;div style="border-bottom-width: initial; border-bottom-style: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 0, 0); margin-bottom: 2.0016pt; padding-bottom: 0; border-bottom-color: initial; padding-left: 27pt; margin-top: 18pt;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 95, 158); margin-top: 10pt; margin-bottom: 3pt; padding-bottom: 0; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;font-weight:bolder;display:inline;"&gt;Portfolio holdings by asset type&lt;/div&gt;&#160;(percent of net assets)&lt;/div&gt;&lt;table style="text-align:start; border-collapse: collapse; break-inside: avoid; margin-left: 27pt; width: 91%; margin-bottom: 10pt;"&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Short-term securities:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bills&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;44.78&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Federal agency bills &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;37.95&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Repurchase agreements&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;13.13&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Bonds, notes &amp;amp; other debt instruments:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bonds &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;6.37&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Other assets less liabilities&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; width: 40pt; padding-right: 0; padding-left: 0; line-height: 9pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt;(2.23&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;)&lt;/div&gt;&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Total&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: double; border-bottom-width: 2pt;"&gt;100.00&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000224794MemberoefClassAxis_USTreasuryBillsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24298"
      unitRef="Unit_pure">0.4478</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000224794MemberoefClassAxis_FederalAgencyBillsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24299"
      unitRef="Unit_pure">0.3795</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000224794MemberoefClassAxis_RepurchaseAgreementsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24300"
      unitRef="Unit_pure">0.1313</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000224794MemberoefClassAxis_USTreasuryBondsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24301"
      unitRef="Unit_pure">0.0637</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000224794MemberoefClassAxis_OtherAssetsLessLiabilitiesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24302"
      unitRef="Unit_pure">-0.0223</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000224794MemberoefClassAxis"
      decimals="INF"
      id="ixv-24303"
      unitRef="Unit_pure">1</oef:PctOfNav>
    <oef:FundName
      contextRef="P10_01_2025To03_31_2026_C000075888MemberoefClassAxis"
      id="ixv-1842">American Funds&#xae; U.S. Government Money Market Fund</oef:FundName>
    <oef:ClassName
      contextRef="P10_01_2025To03_31_2026_C000075888MemberoefClassAxis"
      id="ixv-24304">Class R-1</oef:ClassName>
    <dei:TradingSymbol
      contextRef="P10_01_2025To03_31_2026_C000075888MemberoefClassAxis"
      id="ixv-24305">RAAXX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075888MemberoefClassAxis"
      id="ixv-24306">This semi-annual shareholder report contains important information about American Funds U.S. Government Money Market Fund (the "fund") for the period from October 1, 2025 to March 31, 2026.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual
      contextRef="P10_01_2025To03_31_2026_C000075888MemberoefClassAxis"
      id="ixv-24307">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075888MemberoefClassAxis"
      id="ixv-1849">You can find additional information about the fund at &lt;div style="text-decoration-line: underline; font-family: &amp;quot;Times New Roman&amp;quot;; color: rgb(0, 95, 158); font-size: 10pt; letter-spacing: -0.05pt; line-height: 15pt;display:inline;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;capitalgroup.com/mutual-fund-literature-R1&lt;/div&gt;&lt;/div&gt;. You can also request this information by contacting us at &lt;br/&gt;(800) 421-4225.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite
      contextRef="P10_01_2025To03_31_2026_C000075888MemberoefClassAxis"
      id="ixv-24308">capitalgroup.com/mutual-fund-literature-R1</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber
      contextRef="P10_01_2025To03_31_2026_C000075888MemberoefClassAxis"
      id="ixv-24309">(800) 421-4225</oef:AddlInfoPhoneNumber>
    <oef:ExpensesTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075888MemberoefClassAxis"
      id="ixv-1854">&lt;div style="margin-bottom: 6pt;"&gt;&lt;div style="margin-top: 0; letter-spacing: normal; text-transform: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 13pt; color: rgb(0, 0, 0); margin-bottom: 0;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 13pt; color: rgb(0, 95, 158);font-weight:bolder;display:inline;width:100%;"&gt;What were the fund costs for the last six months?&lt;/div&gt; (&lt;div style="display:inline;"&gt;based&lt;/div&gt; on a hypothetical $10,000 investment)&lt;/div&gt;&lt;/div&gt;&lt;div style="margin-bottom: 4pt;"&gt;&lt;table style="text-align:start; break-inside: avoid; table-layout: auto; width: 100%; border-collapse: collapse; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt; margin-bottom: 3pt;"&gt;&lt;tr style="break-after: avoid; border-bottom-style: none; border-bottom-width: initial; break-inside: avoid-page; background-color: rgb(0, 95, 158); border-right-color: rgb(255, 255, 255); border-right-style: solid; border-right-width: 0.5pt; height: 19.008pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 126.9pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Share class&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 171.072pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 0px; font-size: 10pt; line-height: 10pt; width: 267.948pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: none;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs paid as a percentage of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: 20pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 126.9pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;Class R-1&lt;/td&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 10pt; line-height: 10pt; text-align: center; width: 171.072pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;19&lt;/td&gt;&lt;td style="break-inside: avoid-page; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 267.948pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; vertical-align: bottom;"&gt;0.37&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;div style=";display:inline;vertical-align: super;font-size:9.2px"&gt;*&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;div style="margin-top: 0; font-weight: normal; font-family: 'Arial'; font-size: 8pt; line-height: 8.5pt; color: rgb(0, 0, 0); margin-bottom: 4pt;"&gt;*Annualized.&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="P10_01_2025To03_31_2026_C000075888MemberoefClassAxis"
      decimals="0"
      id="ixv-24310"
      unitRef="Unit_USD">19</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="P10_01_2025To03_31_2026_C000075888MemberoefClassAxis"
      decimals="INF"
      id="Fact_8002528"
      unitRef="Unit_pure">0.0037</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075888MemberoefClassAxis"
      id="ixv-1882">&lt;div style="text-transform: none; margin-bottom: 2.0016pt; font-family: 'Times New Roman'; font-weight: bold; font-size: 11pt; line-height: 11pt; letter-spacing: normal; color: rgb(0, 95, 158); margin-top: 18pt;"&gt;Key fund &lt;div style="display:inline;"&gt;statistics&lt;/div&gt;&lt;/div&gt;&lt;table style="text-align:start; width: 100%; border-collapse: collapse; break-inside: avoid;"&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto; border-top-color: rgb(153, 153, 153); border-top-style: solid; border-top-width: 0.5pt;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Fund net assets (in millions)&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;35,411&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Total number of portfolio holdings&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;157&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="PAsOn03_31_2026_C000075888MemberoefClassAxis"
      decimals="-6"
      id="ixv-24312"
      unitRef="Unit_USD">35411000000</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="PAsOn03_31_2026_C000075888MemberoefClassAxis"
      decimals="0"
      id="ixv-24313"
      unitRef="Unit_Holding">157</oef:HoldingsCount>
    <oef:HoldingsTableTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075888MemberoefClassAxis"
      id="ixv-1897">&lt;div style="border-bottom-width: initial; border-bottom-style: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 0, 0); margin-bottom: 2.0016pt; padding-bottom: 0; border-bottom-color: initial; padding-left: 27pt; margin-top: 18pt;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 95, 158); margin-top: 10pt; margin-bottom: 3pt; padding-bottom: 0; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;font-weight:bolder;display:inline;"&gt;Portfolio holdings by asset type&lt;/div&gt;&#160;(percent of net assets)&lt;/div&gt;&lt;table style="text-align:start; border-collapse: collapse; break-inside: avoid; margin-left: 27pt; width: 91%; margin-bottom: 10pt;"&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Short-term securities:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bills&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;44.78&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Federal agency bills &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;37.95&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Repurchase agreements&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;13.13&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Bonds, notes &amp;amp; other debt instruments:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bonds &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;6.37&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Other assets less liabilities&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; width: 40pt; padding-right: 0; padding-left: 0; line-height: 9pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt;(2.23&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;)&lt;/div&gt;&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Total&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: double; border-bottom-width: 2pt;"&gt;100.00&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075888MemberoefClassAxis_USTreasuryBillsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24314"
      unitRef="Unit_pure">0.4478</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075888MemberoefClassAxis_FederalAgencyBillsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24315"
      unitRef="Unit_pure">0.3795</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075888MemberoefClassAxis_RepurchaseAgreementsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24316"
      unitRef="Unit_pure">0.1313</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075888MemberoefClassAxis_USTreasuryBondsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24317"
      unitRef="Unit_pure">0.0637</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075888MemberoefClassAxis_OtherAssetsLessLiabilitiesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24318"
      unitRef="Unit_pure">-0.0223</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075888MemberoefClassAxis"
      decimals="INF"
      id="ixv-24319"
      unitRef="Unit_pure">1</oef:PctOfNav>
    <oef:FundName
      contextRef="P10_01_2025To03_31_2026_C000075889MemberoefClassAxis"
      id="ixv-1960">American Funds&#xae; U.S. Government Money Market Fund</oef:FundName>
    <oef:ClassName
      contextRef="P10_01_2025To03_31_2026_C000075889MemberoefClassAxis"
      id="ixv-24320">Class R-2</oef:ClassName>
    <dei:TradingSymbol
      contextRef="P10_01_2025To03_31_2026_C000075889MemberoefClassAxis"
      id="ixv-24321">RABXX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075889MemberoefClassAxis"
      id="ixv-24322">This semi-annual shareholder report contains important information about American Funds U.S. Government Money Market Fund (the "fund") for the period from October 1, 2025 to March 31, 2026.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual
      contextRef="P10_01_2025To03_31_2026_C000075889MemberoefClassAxis"
      id="ixv-24323">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075889MemberoefClassAxis"
      id="ixv-1967">You can find additional information about the fund at &lt;div style="text-decoration-line: underline; font-family: &amp;quot;Times New Roman&amp;quot;; color: rgb(0, 95, 158); font-size: 10pt; letter-spacing: -0.05pt; line-height: 15pt;display:inline;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;capitalgroup.com/mutual-fund-literature-R2&lt;/div&gt;&lt;/div&gt;. You can also request this information by contacting us at &lt;br/&gt;(800) 421-4225.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite
      contextRef="P10_01_2025To03_31_2026_C000075889MemberoefClassAxis"
      id="ixv-24324">capitalgroup.com/mutual-fund-literature-R2</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber
      contextRef="P10_01_2025To03_31_2026_C000075889MemberoefClassAxis"
      id="ixv-24325">(800) 421-4225</oef:AddlInfoPhoneNumber>
    <oef:ExpensesTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075889MemberoefClassAxis"
      id="ixv-1972">&lt;div style="margin-bottom: 6pt;"&gt;&lt;div style="margin-top: 0; letter-spacing: normal; text-transform: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 13pt; color: rgb(0, 0, 0); margin-bottom: 0;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 13pt; color: rgb(0, 95, 158);font-weight:bolder;display:inline;width:100%;"&gt;What were the fund costs&lt;div style="display:inline;"&gt; for&lt;/div&gt; the last six months?&lt;/div&gt; (based on a &lt;div style="display:inline;"&gt;hypothetical&lt;/div&gt; $10,000 investment)&lt;/div&gt;&lt;/div&gt;&lt;div style="margin-bottom: 4pt;"&gt;&lt;table style="text-align:start; break-inside: avoid; table-layout: auto; width: 100%; border-collapse: collapse; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt; margin-bottom: 3pt;"&gt;&lt;tr style="break-after: avoid; border-bottom-style: none; border-bottom-width: initial; break-inside: avoid-page; background-color: rgb(0, 95, 158); border-right-color: rgb(255, 255, 255); border-right-style: solid; border-right-width: 0.5pt; height: 19.008pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 126.9pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Share class&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 171.072pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 0px; font-size: 10pt; line-height: 10pt; width: 267.948pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: none;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs paid as a percentage of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: 20pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 126.9pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;Class R-2&lt;/td&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 10pt; line-height: 10pt; text-align: center; width: 171.072pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;70&lt;/td&gt;&lt;td style="break-inside: avoid-page; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 267.948pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; vertical-align: bottom;"&gt;1.40&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;div style=";display:inline;vertical-align: super;font-size:9.2px"&gt;*&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;div style="margin-top: 0; font-weight: normal; font-family: 'Arial'; font-size: 8pt; line-height: 8.5pt; color: rgb(0, 0, 0); margin-bottom: 4pt;"&gt;*Annualized.&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="P10_01_2025To03_31_2026_C000075889MemberoefClassAxis"
      decimals="0"
      id="ixv-24326"
      unitRef="Unit_USD">70</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="P10_01_2025To03_31_2026_C000075889MemberoefClassAxis"
      decimals="INF"
      id="Fact_8002536"
      unitRef="Unit_pure">0.014</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075889MemberoefClassAxis"
      id="ixv-2001">&lt;div style="text-transform: none; margin-bottom: 2.0016pt; font-family: 'Times New Roman'; font-weight: bold; font-size: 11pt; line-height: 11pt; letter-spacing: normal; color: rgb(0, 95, 158); margin-top: 18pt;"&gt;Key fund statistics&lt;/div&gt;&lt;table style="text-align:start; width: 100%; border-collapse: collapse; break-inside: avoid;"&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto; border-top-color: rgb(153, 153, 153); border-top-style: solid; border-top-width: 0.5pt;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Fund net assets (in millions)&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;35,411&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Total number of portfolio holdings&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;157&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="PAsOn03_31_2026_C000075889MemberoefClassAxis"
      decimals="-6"
      id="ixv-24328"
      unitRef="Unit_USD">35411000000</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="PAsOn03_31_2026_C000075889MemberoefClassAxis"
      decimals="0"
      id="ixv-24329"
      unitRef="Unit_Holding">157</oef:HoldingsCount>
    <oef:HoldingsTableTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075889MemberoefClassAxis"
      id="ixv-2015">&lt;div style="border-bottom-width: initial; border-bottom-style: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 0, 0); margin-bottom: 2.0016pt; padding-bottom: 0; border-bottom-color: initial; padding-left: 27pt; margin-top: 18pt;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 95, 158); margin-top: 10pt; margin-bottom: 3pt; padding-bottom: 0; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;font-weight:bolder;display:inline;"&gt;Portfolio holdings by asset type&lt;/div&gt;&#160;(percent of net assets)&lt;/div&gt;&lt;table style="text-align:start; border-collapse: collapse; break-inside: avoid; margin-left: 27pt; width: 91%; margin-bottom: 10pt;"&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Short-term securities:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bills&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;44.78&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Federal agency bills &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;37.95&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Repurchase agreements&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;13.13&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Bonds, notes &amp;amp; other debt instruments:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bonds &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;6.37&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Other assets less liabilities&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; width: 40pt; padding-right: 0; padding-left: 0; line-height: 9pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt;(2.23&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;)&lt;/div&gt;&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Total&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: double; border-bottom-width: 2pt;"&gt;100.00&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075889MemberoefClassAxis_USTreasuryBillsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24330"
      unitRef="Unit_pure">0.4478</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075889MemberoefClassAxis_FederalAgencyBillsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24331"
      unitRef="Unit_pure">0.3795</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075889MemberoefClassAxis_RepurchaseAgreementsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24332"
      unitRef="Unit_pure">0.1313</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075889MemberoefClassAxis_USTreasuryBondsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24333"
      unitRef="Unit_pure">0.0637</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075889MemberoefClassAxis_OtherAssetsLessLiabilitiesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24334"
      unitRef="Unit_pure">-0.0223</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075889MemberoefClassAxis"
      decimals="INF"
      id="ixv-24335"
      unitRef="Unit_pure">1</oef:PctOfNav>
    <oef:FundName
      contextRef="P10_01_2025To03_31_2026_C000148462MemberoefClassAxis"
      id="ixv-2078">American Funds&#xae; U.S. Government Money Market Fund</oef:FundName>
    <oef:ClassName
      contextRef="P10_01_2025To03_31_2026_C000148462MemberoefClassAxis"
      id="ixv-24336">Class R-2E</oef:ClassName>
    <dei:TradingSymbol
      contextRef="P10_01_2025To03_31_2026_C000148462MemberoefClassAxis"
      id="ixv-24337">RBEXX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock
      contextRef="P10_01_2025To03_31_2026_C000148462MemberoefClassAxis"
      id="ixv-24338">This semi-annual shareholder report contains important information about American Funds U.S. Government Money Market Fund (the "fund") for the period from October 1, 2025 to March 31, 2026.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual
      contextRef="P10_01_2025To03_31_2026_C000148462MemberoefClassAxis"
      id="ixv-24339">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock
      contextRef="P10_01_2025To03_31_2026_C000148462MemberoefClassAxis"
      id="ixv-2086">You can find additional information about the fund at &lt;div style="text-decoration-line: underline; font-family: &amp;quot;Times New Roman&amp;quot;; color: rgb(0, 95, 158); font-size: 10pt; letter-spacing: -0.05pt; line-height: 15pt; top: 0px;display:inline;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;capitalgroup.com/mutual-fund-literature-R2E&lt;/div&gt;&lt;/div&gt;. You can also request this information by contacting us at &lt;br/&gt;(800) 421-4225.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite
      contextRef="P10_01_2025To03_31_2026_C000148462MemberoefClassAxis"
      id="ixv-24340">capitalgroup.com/mutual-fund-literature-R2E</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber
      contextRef="P10_01_2025To03_31_2026_C000148462MemberoefClassAxis"
      id="ixv-24341">(800) 421-4225</oef:AddlInfoPhoneNumber>
    <oef:ExpensesTextBlock
      contextRef="P10_01_2025To03_31_2026_C000148462MemberoefClassAxis"
      id="ixv-2091">&lt;div style="margin-bottom: 6pt;"&gt;&lt;div style="margin-top: 0; letter-spacing: normal; text-transform: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 13pt; color: rgb(0, 0, 0); margin-bottom: 0;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 13pt; color: rgb(0, 95, 158);font-weight:bolder;display:inline;width:100%;"&gt;What were the fund costs for the last six months?&lt;/div&gt; (based on a h&lt;div style="display:inline;"&gt;ypot&lt;/div&gt;hetical $10,000 investment)&lt;/div&gt;&lt;/div&gt;&lt;div style="margin-bottom: 4pt;"&gt;&lt;table style="text-align:start; break-inside: avoid; table-layout: auto; width: 100%; border-collapse: collapse; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt; margin-bottom: 3pt;"&gt;&lt;tr style="break-after: avoid; border-bottom-style: none; border-bottom-width: initial; break-inside: avoid-page; background-color: rgb(0, 95, 158); border-right-color: rgb(255, 255, 255); border-right-style: solid; border-right-width: 0.5pt; height: 19.008pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 126.9pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Share class&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 171.072pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 0px; font-size: 10pt; line-height: 10pt; width: 267.948pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: none;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs paid as a percentage of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: 20pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 126.9pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;Class R-2E&lt;/td&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 10pt; line-height: 10pt; text-align: center; width: 171.072pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;56&lt;/td&gt;&lt;td style="break-inside: avoid-page; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 267.948pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; vertical-align: bottom;"&gt;1.12&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;div style=";display:inline;vertical-align: super;font-size:9.2px"&gt;*&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;div style="margin-top: 0; font-weight: normal; font-family: 'Arial'; font-size: 8pt; line-height: 8.5pt; color: rgb(0, 0, 0); margin-bottom: 4pt;"&gt;*Annualized.&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="P10_01_2025To03_31_2026_C000148462MemberoefClassAxis"
      decimals="0"
      id="ixv-24342"
      unitRef="Unit_USD">56</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="P10_01_2025To03_31_2026_C000148462MemberoefClassAxis"
      decimals="INF"
      id="Fact_8002544"
      unitRef="Unit_pure">0.0112</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock
      contextRef="P10_01_2025To03_31_2026_C000148462MemberoefClassAxis"
      id="ixv-2119">&lt;div style="text-transform: none; margin-bottom: 2.0016pt; font-family: 'Times New Roman'; font-weight: bold; font-size: 11pt; line-height: 11pt; letter-spacing: normal; color: rgb(0, 95, 158); margin-top: 18pt;"&gt;Key fund statistics&lt;/div&gt;&lt;table style="text-align:start; width: 100%; border-collapse: collapse; break-inside: avoid;"&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto; border-top-color: rgb(153, 153, 153); border-top-style: solid; border-top-width: 0.5pt;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Fund net assets (in millions)&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;35,411&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Total number of portfolio holdings&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;157&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="PAsOn03_31_2026_C000148462MemberoefClassAxis"
      decimals="-6"
      id="ixv-24344"
      unitRef="Unit_USD">35411000000</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="PAsOn03_31_2026_C000148462MemberoefClassAxis"
      decimals="0"
      id="ixv-24345"
      unitRef="Unit_Holding">157</oef:HoldingsCount>
    <oef:HoldingsTableTextBlock
      contextRef="P10_01_2025To03_31_2026_C000148462MemberoefClassAxis"
      id="ixv-2133">&lt;div style="border-bottom-width: initial; border-bottom-style: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 0, 0); margin-bottom: 2.0016pt; padding-bottom: 0; border-bottom-color: initial; padding-left: 27pt; margin-top: 18pt;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 95, 158); margin-top: 10pt; margin-bottom: 3pt; padding-bottom: 0; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;font-weight:bolder;display:inline;"&gt;Portfolio &lt;div style="display:inline;"&gt;holdings&lt;/div&gt; by asset type&lt;/div&gt;&#160;(percent of net assets)&lt;/div&gt;&lt;table style="text-align:start; border-collapse: collapse; break-inside: avoid; margin-left: 27pt; width: 91%; margin-bottom: 10pt;"&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Short-term securities:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bills&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;44.78&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Federal agency bills &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;37.95&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Repurchase agreements&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;13.13&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Bonds, notes &amp;amp; other debt instruments:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bonds &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;6.37&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Other assets less liabilities&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; width: 40pt; padding-right: 0; padding-left: 0; line-height: 9pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt;(2.23&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;)&lt;/div&gt;&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Total&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: double; border-bottom-width: 2pt;"&gt;100.00&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000148462MemberoefClassAxis_USTreasuryBillsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24346"
      unitRef="Unit_pure">0.4478</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000148462MemberoefClassAxis_FederalAgencyBillsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24347"
      unitRef="Unit_pure">0.3795</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000148462MemberoefClassAxis_RepurchaseAgreementsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24348"
      unitRef="Unit_pure">0.1313</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000148462MemberoefClassAxis_USTreasuryBondsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24349"
      unitRef="Unit_pure">0.0637</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000148462MemberoefClassAxis_OtherAssetsLessLiabilitiesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24350"
      unitRef="Unit_pure">-0.0223</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000148462MemberoefClassAxis"
      decimals="INF"
      id="ixv-24351"
      unitRef="Unit_pure">1</oef:PctOfNav>
    <oef:FundName
      contextRef="P10_01_2025To03_31_2026_C000075890MemberoefClassAxis"
      id="ixv-2197">American Funds&#xae; U.S. Government Money Market Fund</oef:FundName>
    <oef:ClassName
      contextRef="P10_01_2025To03_31_2026_C000075890MemberoefClassAxis"
      id="ixv-24352">Class R-3</oef:ClassName>
    <dei:TradingSymbol
      contextRef="P10_01_2025To03_31_2026_C000075890MemberoefClassAxis"
      id="ixv-24353">RACXX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075890MemberoefClassAxis"
      id="ixv-24354">This semi-annual shareholder report contains important information about American Funds U.S. Government Money Market Fund (the "fund") for the period from October 1, 2025 to March 31, 2026.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual
      contextRef="P10_01_2025To03_31_2026_C000075890MemberoefClassAxis"
      id="ixv-24355">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075890MemberoefClassAxis"
      id="ixv-2204">You can find additional information about the fund at &lt;div style="text-decoration-line: underline; font-family: &amp;quot;Times New Roman&amp;quot;; color: rgb(0, 95, 158); font-size: 10pt; letter-spacing: -0.05pt; line-height: 15pt; top: 0px;display:inline;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;capitalgroup.com/mutual-fund-literature-R3&lt;/div&gt;&lt;/div&gt;. You can also request this information by contacting us at &lt;br/&gt;(800) 421-4225.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite
      contextRef="P10_01_2025To03_31_2026_C000075890MemberoefClassAxis"
      id="ixv-24356">capitalgroup.com/mutual-fund-literature-R3</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber
      contextRef="P10_01_2025To03_31_2026_C000075890MemberoefClassAxis"
      id="ixv-24357">(800) 421-4225</oef:AddlInfoPhoneNumber>
    <oef:ExpensesTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075890MemberoefClassAxis"
      id="ixv-2209">&lt;div style="margin-bottom: 6pt;"&gt;&lt;div style="margin-top: 0; letter-spacing: normal; text-transform: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 13pt; color: rgb(0, 0, 0); margin-bottom: 0;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 13pt; color: rgb(0, 95, 158);font-weight:bolder;display:inline;width:100%;"&gt;What were the fund costs for the last six months?&lt;/div&gt; (based on a hypothetical $10,000 investment)&lt;/div&gt;&lt;/div&gt;&lt;div style="margin-bottom: 4pt;"&gt;&lt;table style="text-align:start; break-inside: avoid; table-layout: auto; width: 100%; border-collapse: collapse; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt; margin-bottom: 3pt;"&gt;&lt;tr style="break-after: avoid; border-bottom-style: none; border-bottom-width: initial; break-inside: avoid-page; background-color: rgb(0, 95, 158); border-right-color: rgb(255, 255, 255); border-right-style: solid; border-right-width: 0.5pt; height: 19.008pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 126.9pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Share class&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 171.072pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 0px; font-size: 10pt; line-height: 10pt; width: 267.948pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: none;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs paid as a percentage of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: 20pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 126.9pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;Class R-3&lt;/td&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 10pt; line-height: 10pt; text-align: center; width: 171.072pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;48&lt;/td&gt;&lt;td style="break-inside: avoid-page; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 267.948pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; vertical-align: bottom;"&gt;0.95&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;div style=";display:inline;vertical-align: super;font-size:9.2px"&gt;*&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;div style="margin-top: 0; font-weight: normal; font-family: 'Arial'; font-size: 8pt; line-height: 8.5pt; color: rgb(0, 0, 0); margin-bottom: 4pt;"&gt;*Annualized.&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="P10_01_2025To03_31_2026_C000075890MemberoefClassAxis"
      decimals="0"
      id="ixv-24358"
      unitRef="Unit_USD">48</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="P10_01_2025To03_31_2026_C000075890MemberoefClassAxis"
      decimals="INF"
      id="Fact_8002552"
      unitRef="Unit_pure">0.0095</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075890MemberoefClassAxis"
      id="ixv-2236">&lt;div style="text-transform: none; margin-bottom: 2.0016pt; font-family: 'Times New Roman'; font-weight: bold; font-size: 11pt; line-height: 11pt; letter-spacing: normal; color: rgb(0, 95, 158); margin-top: 18pt;"&gt;Key fund statistics&lt;/div&gt;&lt;table style="text-align:start; width: 100%; border-collapse: collapse; break-inside: avoid;"&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto; border-top-color: rgb(153, 153, 153); border-top-style: solid; border-top-width: 0.5pt;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Fund net assets (in millions)&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;35,411&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Total number of portfolio holdings&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;157&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="PAsOn03_31_2026_C000075890MemberoefClassAxis"
      decimals="-6"
      id="ixv-24360"
      unitRef="Unit_USD">35411000000</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="PAsOn03_31_2026_C000075890MemberoefClassAxis"
      decimals="0"
      id="ixv-24361"
      unitRef="Unit_Holding">157</oef:HoldingsCount>
    <oef:HoldingsTableTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075890MemberoefClassAxis"
      id="ixv-2250">&lt;div style="border-bottom-width: initial; border-bottom-style: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 0, 0); margin-bottom: 2.0016pt; padding-bottom: 0; border-bottom-color: initial; padding-left: 27pt; margin-top: 18pt;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 95, 158); margin-top: 10pt; margin-bottom: 3pt; padding-bottom: 0; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;font-weight:bolder;display:inline;"&gt;&lt;div style="display:inline;"&gt;Portfolio &lt;/div&gt;holdings by asset type&lt;/div&gt;&#160;(percent of net assets)&lt;/div&gt;&lt;table style="text-align:start; border-collapse: collapse; break-inside: avoid; margin-left: 27pt; width: 91%; margin-bottom: 10pt;"&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Short-term securities:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bills&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;44.78&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Federal agency bills &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;37.95&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Repurchase agreements&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;13.13&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Bonds, notes &amp;amp; other debt instruments:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bonds &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;6.37&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Other assets less liabilities&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; width: 40pt; padding-right: 0; padding-left: 0; line-height: 9pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt;(2.23&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;)&lt;/div&gt;&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Total&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: double; border-bottom-width: 2pt;"&gt;100.00&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075890MemberoefClassAxis_USTreasuryBillsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24362"
      unitRef="Unit_pure">0.4478</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075890MemberoefClassAxis_FederalAgencyBillsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24363"
      unitRef="Unit_pure">0.3795</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075890MemberoefClassAxis_RepurchaseAgreementsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24364"
      unitRef="Unit_pure">0.1313</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075890MemberoefClassAxis_USTreasuryBondsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24365"
      unitRef="Unit_pure">0.0637</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075890MemberoefClassAxis_OtherAssetsLessLiabilitiesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24366"
      unitRef="Unit_pure">-0.0223</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075890MemberoefClassAxis"
      decimals="INF"
      id="ixv-24367"
      unitRef="Unit_pure">1</oef:PctOfNav>
    <oef:FundName
      contextRef="P10_01_2025To03_31_2026_C000075891MemberoefClassAxis"
      id="ixv-2315">American Funds&#xae; U.S. Government Money Market Fund</oef:FundName>
    <oef:ClassName
      contextRef="P10_01_2025To03_31_2026_C000075891MemberoefClassAxis"
      id="ixv-24368">Class R-4</oef:ClassName>
    <dei:TradingSymbol
      contextRef="P10_01_2025To03_31_2026_C000075891MemberoefClassAxis"
      id="ixv-24369">RADXX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075891MemberoefClassAxis"
      id="ixv-24370">This semi-annual shareholder report contains important information about American Funds U.S. Government Money Market Fund (the "fund") for the period from October 1, 2025 to March 31, 2026.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual
      contextRef="P10_01_2025To03_31_2026_C000075891MemberoefClassAxis"
      id="ixv-24371">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075891MemberoefClassAxis"
      id="ixv-2322">You can find additional information about the fund at &lt;div style="text-decoration-line: underline; font-family: &amp;quot;Times New Roman&amp;quot;; color: rgb(0, 95, 158); font-size: 10pt; letter-spacing: -0.05pt; line-height: 15pt; top: 0px;display:inline;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;capitalgroup.com/mutual-fund-literature-R4&lt;/div&gt;&lt;/div&gt;. You can also request this information by contacting us at &lt;br/&gt;(800) 421-4225.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite
      contextRef="P10_01_2025To03_31_2026_C000075891MemberoefClassAxis"
      id="ixv-24372">capitalgroup.com/mutual-fund-literature-R4</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber
      contextRef="P10_01_2025To03_31_2026_C000075891MemberoefClassAxis"
      id="ixv-24373">(800) 421-4225</oef:AddlInfoPhoneNumber>
    <oef:ExpensesTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075891MemberoefClassAxis"
      id="ixv-2327">&lt;div style="margin-bottom: 6pt;"&gt;&lt;div style="margin-top: 0; letter-spacing: normal; text-transform: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 13pt; color: rgb(0, 0, 0); margin-bottom: 0;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 13pt; color: rgb(0, 95, 158);font-weight:bolder;display:inline;width:100%;"&gt;What were the &lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;fund &lt;/div&gt;costs for the last six months?&lt;/div&gt; (based on a hypothetical $10,000 investment)&lt;/div&gt;&lt;/div&gt;&lt;div style="margin-bottom: 4pt;"&gt;&lt;table style="text-align:start; break-inside: avoid; table-layout: auto; width: 100%; border-collapse: collapse; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt; margin-bottom: 3pt;"&gt;&lt;tr style="break-after: avoid; border-bottom-style: none; border-bottom-width: initial; break-inside: avoid-page; background-color: rgb(0, 95, 158); border-right-color: rgb(255, 255, 255); border-right-style: solid; border-right-width: 0.5pt; height: 19.008pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 126.9pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Share class&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 171.072pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 0px; font-size: 10pt; line-height: 10pt; width: 267.948pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: none;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs paid as a percentage of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: 20pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 126.9pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;Class R-4&lt;/td&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 10pt; line-height: 10pt; text-align: center; width: 171.072pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;33&lt;/td&gt;&lt;td style="break-inside: avoid-page; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 267.948pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; vertical-align: bottom;"&gt;0.66&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;div style=";display:inline;vertical-align: super;font-size:9.2px"&gt;*&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;div style="margin-top: 0; font-weight: normal; font-family: 'Arial'; font-size: 8pt; line-height: 8.5pt; color: rgb(0, 0, 0); margin-bottom: 4pt;"&gt;*Annualized.&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="P10_01_2025To03_31_2026_C000075891MemberoefClassAxis"
      decimals="0"
      id="ixv-24374"
      unitRef="Unit_USD">33</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="P10_01_2025To03_31_2026_C000075891MemberoefClassAxis"
      decimals="INF"
      id="Fact_8002560"
      unitRef="Unit_pure">0.0066</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075891MemberoefClassAxis"
      id="ixv-2355">&lt;div style="text-transform: none; margin-bottom: 2.0016pt; font-family: 'Times New Roman'; font-weight: bold; font-size: 11pt; line-height: 11pt; letter-spacing: normal; color: rgb(0, 95, 158); margin-top: 18pt;"&gt;Key fund statistics&lt;/div&gt;&lt;table style="text-align:start; width: 100%; border-collapse: collapse; break-inside: avoid;"&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto; border-top-color: rgb(153, 153, 153); border-top-style: solid; border-top-width: 0.5pt;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Fund net assets (in millions)&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;35,411&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Total number of portfolio holdings&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;157&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="PAsOn03_31_2026_C000075891MemberoefClassAxis"
      decimals="-6"
      id="ixv-24376"
      unitRef="Unit_USD">35411000000</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="PAsOn03_31_2026_C000075891MemberoefClassAxis"
      decimals="0"
      id="ixv-24377"
      unitRef="Unit_Holding">157</oef:HoldingsCount>
    <oef:HoldingsTableTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075891MemberoefClassAxis"
      id="ixv-2369">&lt;div style="border-bottom-width: initial; border-bottom-style: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 0, 0); margin-bottom: 2.0016pt; padding-bottom: 0; border-bottom-color: initial; padding-left: 27pt; margin-top: 18pt;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 95, 158); margin-top: 10pt; margin-bottom: 3pt; padding-bottom: 0; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;font-weight:bolder;display:inline;"&gt;Portfolio holdings by asset type&lt;/div&gt;&#160;(percent of net assets)&lt;/div&gt;&lt;table style="text-align:start; border-collapse: collapse; break-inside: avoid; margin-left: 27pt; width: 91%; margin-bottom: 10pt;"&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Short-term securities:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bills&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;44.78&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Federal agency bills &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;37.95&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Repurchase agreements&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;13.13&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Bonds, notes &amp;amp; other debt instruments:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bonds &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;6.37&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Other assets less liabilities&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; width: 40pt; padding-right: 0; padding-left: 0; line-height: 9pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt;(2.23&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;)&lt;/div&gt;&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Total&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: double; border-bottom-width: 2pt;"&gt;100.00&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075891MemberoefClassAxis_USTreasuryBillsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24378"
      unitRef="Unit_pure">0.4478</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075891MemberoefClassAxis_FederalAgencyBillsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24379"
      unitRef="Unit_pure">0.3795</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075891MemberoefClassAxis_RepurchaseAgreementsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24380"
      unitRef="Unit_pure">0.1313</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075891MemberoefClassAxis_USTreasuryBondsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24381"
      unitRef="Unit_pure">0.0637</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075891MemberoefClassAxis_OtherAssetsLessLiabilitiesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24382"
      unitRef="Unit_pure">-0.0223</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075891MemberoefClassAxis"
      decimals="INF"
      id="ixv-24383"
      unitRef="Unit_pure">1</oef:PctOfNav>
    <oef:FundName
      contextRef="P10_01_2025To03_31_2026_C000164807MemberoefClassAxis"
      id="ixv-2433">American Funds&#xae; U.S. Government Money Market Fund</oef:FundName>
    <oef:ClassName
      contextRef="P10_01_2025To03_31_2026_C000164807MemberoefClassAxis"
      id="ixv-24384">Class R-5E</oef:ClassName>
    <dei:TradingSymbol
      contextRef="P10_01_2025To03_31_2026_C000164807MemberoefClassAxis"
      id="ixv-24385">RAGXX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock
      contextRef="P10_01_2025To03_31_2026_C000164807MemberoefClassAxis"
      id="ixv-24386">This semi-annual shareholder report contains important information about American Funds U.S. Government Money Market Fund (the "fund") for the period from October 1, 2025 to March 31, 2026.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual
      contextRef="P10_01_2025To03_31_2026_C000164807MemberoefClassAxis"
      id="ixv-24387">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock
      contextRef="P10_01_2025To03_31_2026_C000164807MemberoefClassAxis"
      id="ixv-2440">You can find additional information about the fund at &lt;div style="text-decoration-line: underline; font-family: &amp;quot;Times New Roman&amp;quot;; color: rgb(0, 95, 158); font-size: 10pt; letter-spacing: -0.05pt; line-height: 15pt; top: 0px;display:inline;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;capitalgroup.com/mutual-fund-literature-R5E&lt;/div&gt;&lt;/div&gt;. You can also request this information by contacting us at &lt;br/&gt;(800) 421-4225.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite
      contextRef="P10_01_2025To03_31_2026_C000164807MemberoefClassAxis"
      id="ixv-24388">capitalgroup.com/mutual-fund-literature-R5E</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber
      contextRef="P10_01_2025To03_31_2026_C000164807MemberoefClassAxis"
      id="ixv-24389">(800) 421-4225</oef:AddlInfoPhoneNumber>
    <oef:ExpensesTextBlock
      contextRef="P10_01_2025To03_31_2026_C000164807MemberoefClassAxis"
      id="ixv-2445">&lt;div style="margin-bottom: 6pt;"&gt;&lt;div style="margin-top: 0; letter-spacing: normal; text-transform: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 13pt; color: rgb(0, 0, 0); margin-bottom: 0;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 13pt; color: rgb(0, 95, 158);font-weight:bolder;display:inline;width:100%;"&gt;What were the fund costs for the last six months?&lt;/div&gt; (based on a &lt;div style="display:inline;"&gt;hypoth&lt;/div&gt;etical $10,000 investment)&lt;/div&gt;&lt;/div&gt;&lt;div style="margin-bottom: 4pt;"&gt;&lt;table style="text-align:start; break-inside: avoid; table-layout: auto; width: 100%; border-collapse: collapse; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt; margin-bottom: 3pt;"&gt;&lt;tr style="break-after: avoid; border-bottom-style: none; border-bottom-width: initial; break-inside: avoid-page; background-color: rgb(0, 95, 158); border-right-color: rgb(255, 255, 255); border-right-style: solid; border-right-width: 0.5pt; height: 19.008pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 126.9pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Share class&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 171.072pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 0px; font-size: 10pt; line-height: 10pt; width: 267.948pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: none;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs paid as a percentage of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: 20pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 126.9pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;Class R-5E&lt;/td&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 10pt; line-height: 10pt; text-align: center; width: 171.072pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;23&lt;/td&gt;&lt;td style="break-inside: avoid-page; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 267.948pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; vertical-align: bottom;"&gt;0.45&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;div style=";display:inline;vertical-align: super;font-size:9.2px"&gt;*&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;div style="margin-top: 0; font-weight: normal; font-family: 'Arial'; font-size: 8pt; line-height: 8.5pt; color: rgb(0, 0, 0); margin-bottom: 4pt;"&gt;*Annualized.&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="P10_01_2025To03_31_2026_C000164807MemberoefClassAxis"
      decimals="0"
      id="ixv-24390"
      unitRef="Unit_USD">23</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="P10_01_2025To03_31_2026_C000164807MemberoefClassAxis"
      decimals="INF"
      id="Fact_8002568"
      unitRef="Unit_pure">0.0045</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock
      contextRef="P10_01_2025To03_31_2026_C000164807MemberoefClassAxis"
      id="ixv-2473">&lt;div style="text-transform: none; margin-bottom: 2.0016pt; font-family: 'Times New Roman'; font-weight: bold; font-size: 11pt; line-height: 11pt; letter-spacing: normal; color: rgb(0, 95, 158); margin-top: 18pt;"&gt;Key fund statistics&lt;/div&gt;&lt;table style="text-align:start; width: 100%; border-collapse: collapse; break-inside: avoid;"&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto; border-top-color: rgb(153, 153, 153); border-top-style: solid; border-top-width: 0.5pt;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Fund net assets (in millions)&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;35,411&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Total number of portfolio holdings&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;157&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="PAsOn03_31_2026_C000164807MemberoefClassAxis"
      decimals="-6"
      id="ixv-24392"
      unitRef="Unit_USD">35411000000</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="PAsOn03_31_2026_C000164807MemberoefClassAxis"
      decimals="0"
      id="ixv-24393"
      unitRef="Unit_Holding">157</oef:HoldingsCount>
    <oef:HoldingsTableTextBlock
      contextRef="P10_01_2025To03_31_2026_C000164807MemberoefClassAxis"
      id="ixv-2487">&lt;div style="border-bottom-width: initial; border-bottom-style: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 0, 0); margin-bottom: 2.0016pt; padding-bottom: 0; border-bottom-color: initial; padding-left: 27pt; margin-top: 18pt;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 95, 158); margin-top: 10pt; margin-bottom: 3pt; padding-bottom: 0; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;font-weight:bolder;display:inline;"&gt;Portfolio holdings by asset type&lt;/div&gt;&#160;(percent of net assets)&lt;/div&gt;&lt;table style="text-align:start; border-collapse: collapse; break-inside: avoid; margin-left: 27pt; width: 91%; margin-bottom: 10pt;"&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Short-term securities:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bills&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;44.78&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Federal agency bills &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;37.95&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Repurchase agreements&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;13.13&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Bonds, notes &amp;amp; other debt instruments:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bonds &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;6.37&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Other assets less liabilities&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; width: 40pt; padding-right: 0; padding-left: 0; line-height: 9pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt;(2.23&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;)&lt;/div&gt;&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Total&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: double; border-bottom-width: 2pt;"&gt;100.00&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000164807MemberoefClassAxis_USTreasuryBillsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24394"
      unitRef="Unit_pure">0.4478</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000164807MemberoefClassAxis_FederalAgencyBillsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24395"
      unitRef="Unit_pure">0.3795</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000164807MemberoefClassAxis_RepurchaseAgreementsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24396"
      unitRef="Unit_pure">0.1313</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000164807MemberoefClassAxis_USTreasuryBondsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24397"
      unitRef="Unit_pure">0.0637</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000164807MemberoefClassAxis_OtherAssetsLessLiabilitiesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24398"
      unitRef="Unit_pure">-0.0223</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000164807MemberoefClassAxis"
      decimals="INF"
      id="ixv-24399"
      unitRef="Unit_pure">1</oef:PctOfNav>
    <oef:FundName
      contextRef="P10_01_2025To03_31_2026_C000075892MemberoefClassAxis"
      id="ixv-2551">American Funds&#xae; U.S. Government Money Market Fund</oef:FundName>
    <oef:ClassName
      contextRef="P10_01_2025To03_31_2026_C000075892MemberoefClassAxis"
      id="ixv-24400">Class R-5</oef:ClassName>
    <dei:TradingSymbol
      contextRef="P10_01_2025To03_31_2026_C000075892MemberoefClassAxis"
      id="ixv-24401">RAEXX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075892MemberoefClassAxis"
      id="ixv-24402">This semi-annual shareholder report contains important information about American Funds U.S. Government Money Market Fund (the "fund") for the period from October 1, 2025 to March 31, 2026.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual
      contextRef="P10_01_2025To03_31_2026_C000075892MemberoefClassAxis"
      id="ixv-24403">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075892MemberoefClassAxis"
      id="ixv-2558">You can find additional information about the fund at &lt;div style="text-decoration-line: underline; font-family: &amp;quot;Times New Roman&amp;quot;; color: rgb(0, 95, 158); font-size: 10pt; letter-spacing: -0.05pt; line-height: 15pt; top: 0px;display:inline;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;capitalgroup.com/mutual-fund-literature-R5&lt;/div&gt;&lt;/div&gt;. You can also request this information by contacting us at &lt;br/&gt;(800) 421-4225.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite
      contextRef="P10_01_2025To03_31_2026_C000075892MemberoefClassAxis"
      id="ixv-24404">capitalgroup.com/mutual-fund-literature-R5</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber
      contextRef="P10_01_2025To03_31_2026_C000075892MemberoefClassAxis"
      id="ixv-24405">(800) 421-4225</oef:AddlInfoPhoneNumber>
    <oef:ExpensesTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075892MemberoefClassAxis"
      id="ixv-2563">&lt;div style="margin-bottom: 6pt;"&gt;&lt;div style="margin-top: 0; letter-spacing: normal; text-transform: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 13pt; color: rgb(0, 0, 0); margin-bottom: 0;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 13pt; color: rgb(0, 95, 158);font-weight:bolder;display:inline;width:100%;"&gt;What were the fund c&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;os&lt;/div&gt;ts for the last six months?&lt;/div&gt; (based on a hypothetical $10,000 investment)&lt;/div&gt;&lt;/div&gt;&lt;div style="margin-bottom: 4pt;"&gt;&lt;table style="text-align:start; break-inside: avoid; table-layout: auto; width: 100%; border-collapse: collapse; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt; margin-bottom: 3pt;"&gt;&lt;tr style="break-after: avoid; border-bottom-style: none; border-bottom-width: initial; break-inside: avoid-page; background-color: rgb(0, 95, 158); border-right-color: rgb(255, 255, 255); border-right-style: solid; border-right-width: 0.5pt; height: 19.008pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 126.9pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Share class&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 171.072pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 0px; font-size: 10pt; line-height: 10pt; width: 267.948pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: none;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs paid as a percentage of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: 20pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 126.9pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;Class R-5&lt;/td&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 10pt; line-height: 10pt; text-align: center; width: 171.072pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;18&lt;/td&gt;&lt;td style="break-inside: avoid-page; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 267.948pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; vertical-align: bottom;"&gt;0.36&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;div style=";display:inline;vertical-align: super;font-size:9.2px"&gt;*&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;div style="margin-top: 0; font-weight: normal; font-family: 'Arial'; font-size: 8pt; line-height: 8.5pt; color: rgb(0, 0, 0); margin-bottom: 4pt;"&gt;*Annualized.&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="P10_01_2025To03_31_2026_C000075892MemberoefClassAxis"
      decimals="0"
      id="ixv-24406"
      unitRef="Unit_USD">18</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="P10_01_2025To03_31_2026_C000075892MemberoefClassAxis"
      decimals="INF"
      id="Fact_8002576"
      unitRef="Unit_pure">0.0036</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075892MemberoefClassAxis"
      id="ixv-2591">&lt;div style="text-transform: none; margin-bottom: 2.0016pt; font-family: 'Times New Roman'; font-weight: bold; font-size: 11pt; line-height: 11pt; letter-spacing: normal; color: rgb(0, 95, 158); margin-top: 18pt;"&gt;Key fund statistics&lt;/div&gt;&lt;table style="text-align:start; width: 100%; border-collapse: collapse; break-inside: avoid;"&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto; border-top-color: rgb(153, 153, 153); border-top-style: solid; border-top-width: 0.5pt;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Fund net assets (in millions)&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;35,411&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Total number of portfolio holdings&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;157&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="PAsOn03_31_2026_C000075892MemberoefClassAxis"
      decimals="-6"
      id="ixv-24408"
      unitRef="Unit_USD">35411000000</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="PAsOn03_31_2026_C000075892MemberoefClassAxis"
      decimals="0"
      id="ixv-24409"
      unitRef="Unit_Holding">157</oef:HoldingsCount>
    <oef:HoldingsTableTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075892MemberoefClassAxis"
      id="ixv-2605">&lt;div style="border-bottom-width: initial; border-bottom-style: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 0, 0); margin-bottom: 2.0016pt; padding-bottom: 0; border-bottom-color: initial; padding-left: 27pt; margin-top: 18pt;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 95, 158); margin-top: 10pt; margin-bottom: 3pt; padding-bottom: 0; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;font-weight:bolder;display:inline;"&gt;Portfolio holdings by asset type&lt;/div&gt;&#160;(percent of net assets)&lt;/div&gt;&lt;table style="text-align:start; border-collapse: collapse; break-inside: avoid; margin-left: 27pt; width: 91%; margin-bottom: 10pt;"&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Short-term securities:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bills&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;44.78&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Federal agency bills &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;37.95&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Repurchase agreements&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;13.13&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Bonds, notes &amp;amp; other debt instruments:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bonds &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;6.37&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Other assets less liabilities&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; width: 40pt; padding-right: 0; padding-left: 0; line-height: 9pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt;(2.23&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;)&lt;/div&gt;&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;Total&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: double; border-bottom-width: 2pt;"&gt;100.00&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075892MemberoefClassAxis_USTreasuryBillsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24410"
      unitRef="Unit_pure">0.4478</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075892MemberoefClassAxis_FederalAgencyBillsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24411"
      unitRef="Unit_pure">0.3795</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075892MemberoefClassAxis_RepurchaseAgreementsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24412"
      unitRef="Unit_pure">0.1313</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075892MemberoefClassAxis_USTreasuryBondsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24413"
      unitRef="Unit_pure">0.0637</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075892MemberoefClassAxis_OtherAssetsLessLiabilitiesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24414"
      unitRef="Unit_pure">-0.0223</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075892MemberoefClassAxis"
      decimals="INF"
      id="ixv-24415"
      unitRef="Unit_pure">1</oef:PctOfNav>
    <oef:FundName
      contextRef="P10_01_2025To03_31_2026_C000075893MemberoefClassAxis"
      id="ixv-2669">American Funds&#xae; U.S. Government Money Market Fund</oef:FundName>
    <oef:ClassName
      contextRef="P10_01_2025To03_31_2026_C000075893MemberoefClassAxis"
      id="ixv-24416">Class R-6</oef:ClassName>
    <dei:TradingSymbol
      contextRef="P10_01_2025To03_31_2026_C000075893MemberoefClassAxis"
      id="ixv-24417">RAFXX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075893MemberoefClassAxis"
      id="ixv-24418">This semi-annual shareholder report contains important information about American Funds U.S. Government Money Market Fund (the "fund") for the period from October 1, 2025 to March 31, 2026.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual
      contextRef="P10_01_2025To03_31_2026_C000075893MemberoefClassAxis"
      id="ixv-24419">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075893MemberoefClassAxis"
      id="ixv-2676">You can find additional information about the fund at &lt;div style="text-decoration-line: underline; font-family: &amp;quot;Times New Roman&amp;quot;; color: rgb(0, 95, 158); font-size: 10pt; letter-spacing: -0.05pt; line-height: 15pt; top: 0px;display:inline;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;capitalgroup.com/mutual-fund-literature-R6&lt;/div&gt;&lt;/div&gt;. You can also request this information by contacting us at &lt;br/&gt;(800) 421-4225.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite
      contextRef="P10_01_2025To03_31_2026_C000075893MemberoefClassAxis"
      id="ixv-24420">capitalgroup.com/mutual-fund-literature-R6</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber
      contextRef="P10_01_2025To03_31_2026_C000075893MemberoefClassAxis"
      id="ixv-24421">(800) 421-4225</oef:AddlInfoPhoneNumber>
    <oef:ExpensesTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075893MemberoefClassAxis"
      id="ixv-2681">&lt;div style="margin-bottom: 6pt;"&gt;&lt;div style="margin-top: 0; letter-spacing: normal; text-transform: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 13pt; color: rgb(0, 0, 0); margin-bottom: 0;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 13pt; color: rgb(0, 95, 158);font-weight:bolder;display:inline;width:100%;"&gt;What were the fund costs &lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;for&lt;/div&gt; the last six months?&lt;/div&gt; (based on a hypothetical $10,000 investment)&lt;/div&gt;&lt;/div&gt;&lt;div style="margin-bottom: 4pt;"&gt;&lt;table style="text-align:start; break-inside: avoid; table-layout: auto; width: 100%; border-collapse: collapse; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt; margin-bottom: 3pt;"&gt;&lt;tr style="break-after: avoid; border-bottom-style: none; border-bottom-width: initial; break-inside: avoid-page; background-color: rgb(0, 95, 158); border-right-color: rgb(255, 255, 255); border-right-style: solid; border-right-width: 0.5pt; height: 19.008pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 126.9pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Share class&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 6pt; font-size: 10pt; line-height: 10pt; width: 171.072pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: 0.5pt solid rgb(255, 255, 255);"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;td style="break-inside: avoid-page; padding: 3pt 0px; font-size: 10pt; line-height: 10pt; width: 267.948pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-align: center; vertical-align: middle; color: rgb(255, 255, 255); border-right: none;"&gt;&lt;div style="font-weight:bolder;display:inline;"&gt;Costs paid as a percentage of a $10,000 investment&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: 20pt; border-bottom-color: initial;"&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 126.9pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;Class R-6&lt;/td&gt;&lt;td style="break-inside: avoid-page; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 10pt; line-height: 10pt; text-align: center; width: 171.072pt; color: rgb(0, 0, 0); padding-right: 6pt; padding-left: 6pt; vertical-align: bottom;"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;16&lt;/td&gt;&lt;td style="break-inside: avoid-page; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-size: 10pt; line-height: 10pt; font-family: 'Arial'; text-align: center; width: 267.948pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; vertical-align: bottom;"&gt;0.31&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;div style=";display:inline;vertical-align: super;font-size:9.2px"&gt;*&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;&lt;div style="margin-top: 0; font-weight: normal; font-family: 'Arial'; font-size: 8pt; line-height: 8.5pt; color: rgb(0, 0, 0); margin-bottom: 4pt;"&gt;*Annualized.&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="P10_01_2025To03_31_2026_C000075893MemberoefClassAxis"
      decimals="0"
      id="ixv-24422"
      unitRef="Unit_USD">16</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="P10_01_2025To03_31_2026_C000075893MemberoefClassAxis"
      decimals="INF"
      id="Fact_8002584"
      unitRef="Unit_pure">0.0031</oef:ExpenseRatioPct>
    <oef:AddlFundStatisticsTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075893MemberoefClassAxis"
      id="ixv-2709">&lt;div style="text-transform: none; margin-bottom: 2.0016pt; font-family: 'Times New Roman'; font-weight: bold; font-size: 11pt; line-height: 11pt; letter-spacing: normal; color: rgb(0, 95, 158); margin-top: 18pt;"&gt;Key fund statistics&lt;/div&gt;&lt;table style="text-align:start; width: 100%; border-collapse: collapse; break-inside: avoid;"&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto; border-top-color: rgb(153, 153, 153); border-top-style: solid; border-top-width: 0.5pt;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Fund net assets (in millions)&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;&lt;div style="float: none; letter-spacing: 0px; top: 0px;display:inline;"&gt;$&lt;/div&gt;35,411&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; border-bottom-color: rgb(153, 153, 153); height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0); font-family: 'Arial'; text-align: left; width: 70%; font-weight: normal;"&gt;Total number of portfolio holdings&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 0; padding-right: 0; font-family: 'Arial'; font-size: 9pt; line-height: 9pt; color: rgb(0, 0, 0);"&gt;157&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="PAsOn03_31_2026_C000075893MemberoefClassAxis"
      decimals="-6"
      id="ixv-24424"
      unitRef="Unit_USD">35411000000</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="PAsOn03_31_2026_C000075893MemberoefClassAxis"
      decimals="0"
      id="ixv-24425"
      unitRef="Unit_Holding">157</oef:HoldingsCount>
    <oef:HoldingsTableTextBlock
      contextRef="P10_01_2025To03_31_2026_C000075893MemberoefClassAxis"
      id="ixv-2723">&lt;div style="border-bottom-width: initial; border-bottom-style: none; font-family: 'Arial'; font-weight: normal; font-size: 10pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 0, 0); margin-bottom: 2.0016pt; padding-bottom: 0; border-bottom-color: initial; padding-left: 27pt; margin-top: 18pt;"&gt;&lt;div style="font-family: 'Times New Roman'; font-size: 11pt; line-height: 11pt; letter-spacing: normal; text-transform: none; text-align: left; color: rgb(0, 95, 158); margin-top: 10pt; margin-bottom: 3pt; padding-bottom: 0; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial;font-weight:bolder;display:inline;"&gt;Portfolio holdings by asset type&lt;/div&gt;&#160;(percent of net assets)&lt;/div&gt;&lt;table style="text-align:start; border-collapse: collapse; break-inside: avoid; margin-left: 27pt; width: 91%; margin-bottom: 10pt;"&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Short-term securities:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bills&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;44.78&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Federal agency bills &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;37.95&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;Repurchase agreements&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;13.13&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;Bonds, notes &amp;amp; other debt instruments:&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-right: 0; padding-bottom: 3pt; padding-left: 0; line-height: 9pt;"&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; padding-left: 8pt; text-align: left; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; line-height: 9pt;"&gt;U.S. Treasury bonds &amp;amp; notes&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-weight: normal; padding-top: 3pt; padding-bottom: 3pt; font-family: 'Arial'; font-size: 9pt; color: rgb(0, 0, 0); padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt;"&gt;6.37&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Other assets less liabilities&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; width: 40pt; padding-right: 0; padding-left: 0; line-height: 9pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: solid; border-bottom-width: 0.5pt;"&gt;(2.23&lt;div style="letter-spacing: 0px; top: 0px;display:inline;"&gt;)&lt;/div&gt;&lt;div style="visibility: hidden; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; height: auto;"&gt;&lt;td style="break-inside: avoid-page; vertical-align: middle; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; text-align: left; padding-right: 0; padding-left: 0; line-height: 9pt;"&gt;Total&lt;/td&gt;&lt;td style="break-inside: avoid-page; text-align: right; vertical-align: middle; white-space: nowrap; font-family: 'Arial'; font-weight: normal; font-size: 9pt; color: rgb(0, 0, 0); padding-top: 3pt; padding-bottom: 3pt; padding-right: 0; padding-left: 0; line-height: 9pt; width: 40pt; border-bottom-color: rgb(153, 153, 153); border-bottom-style: double; border-bottom-width: 2pt;"&gt;100.00&lt;div style="visibility: visible; letter-spacing: 0px; top: 0px;display:inline;"&gt;%&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075893MemberoefClassAxis_USTreasuryBillsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24426"
      unitRef="Unit_pure">0.4478</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075893MemberoefClassAxis_FederalAgencyBillsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24427"
      unitRef="Unit_pure">0.3795</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075893MemberoefClassAxis_RepurchaseAgreementsMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24428"
      unitRef="Unit_pure">0.1313</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075893MemberoefClassAxis_USTreasuryBondsAndNotesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24429"
      unitRef="Unit_pure">0.0637</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075893MemberoefClassAxis_OtherAssetsLessLiabilitiesMemberusgaapInvestmentTypeAxis"
      decimals="INF"
      id="ixv-24430"
      unitRef="Unit_pure">-0.0223</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="PAsOn03_31_2026_C000075893MemberoefClassAxis"
      decimals="INF"
      id="ixv-24431"
      unitRef="Unit_pure">1</oef:PctOfNav>
    <link:footnoteLink
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        <link:footnote id="FN_26415" xlink:label="FN_26415" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US">Annualized.</link:footnote>
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