v3.23.4
Label Element Value
Prospectus [Line Items] rr_ProspectusLineItems  
Document Type dei_DocumentType 485BPOS
Document Period End Date dei_DocumentPeriodEndDate Dec. 22, 2023
Entity Registrant Name dei_EntityRegistrantName FIRST AMERICAN FUNDS TRUST
Entity Central Index Key dei_EntityCentralIndexKey 0001890141
Entity Inv Company Type dei_EntityInvCompanyType N-1A
Amendment Flag dei_AmendmentFlag false
Document Creation Date dei_DocumentCreationDate Dec. 22, 2023
Document Effective Date dei_DocumentEffectiveDate Dec. 22, 2023
Prospectus Date rr_ProspectusDate Dec. 22, 2023
Government Obligations Fund | Class A Shares  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol FAAXX
Risk/Return [Heading] rr_RiskReturnHeading Government Obligations Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Government Obligations Fund’s objective is to seek maximum current income to the extent consistent with the preservation of capital and maintenance of liquidity.

Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following tables describe the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Maximum Cumulative Sales Charge (as a percentage of Offering Price) rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Shareholder Fee, Other rr_ShareholderFeeOther $ 15
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.10%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Component1 Other Expenses rr_Component1OtherExpensesOverAssets 0.25%
Component2 Other Expenses rr_Component2OtherExpensesOverAssets 0.15%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.75%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets none [1]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.75% [1]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2024
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

Example: This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and the fund’s operating expenses remain the same (except that the example incorporates the fund’s expense limitation arrangements for only the first year of each period presented). You would incur these hypothetical expenses whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 77
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 240
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 417
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 930
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Government Obligations Fund invests exclusively in short-term U.S. government securities, including repurchase agreements secured by U.S. government securities. U.S. government securities are bonds or other debt obligations issued or guaranteed as to principal and interest by the U.S. government or one of its agencies or instrumentalities. U.S. Treasury securities and some obligations of U.S. government agencies and instrumentalities are supported by the full faith and credit of the U.S. government. Other U.S. government securities are backed by the right of the issuer to borrow from the U.S. Treasury. Still others are supported only by the credit of the issuer or instrumentality.

Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the potential risks of investing in the fund. The fund’s past performance is not necessarily an indication of how the fund will perform in the future. Updated performance information is available online at www.firstamericanfunds.com or by calling 800 677-3863.

 

The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.

 

The performance shown in the bar chart and performance table is the performance of the fund’s predecessor entity, Government Obligations Fund, a series of First American Funds, Inc. (the “Predecessor Fund”), prior to the commencement of the fund’s operations. On December 22, 2023 the fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, the fund adopted the performance and financial history of the Predecessor Fund. The fund has the same investment objective, strategy, risks and investment adviser as the Predecessor Fund. As a result, the performance of the fund would have been substantially similar to that of the Predecessor Fund.

 

The bar chart shows the performance of the Predecessor Fund’s Class A shares which was adopted by the Class A shares of the fund for periods prior to the Reorganization. If the Predecessor Fund’s investment adviser had not waived or reimbursed certain Predecessor Fund expenses during these periods, the Predecessor Fund’s returns would have been lower.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart shows you the variability of the fund’s performance from year to year.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 677-3863
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.firstamericanfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund’s past performance is not necessarily an indication of how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading ANNUAL TOTAL RETURNS AS OF 12/31 EACH YEAR
Annual Return 2013 rr_AnnualReturn2013 0.01% [2]
Annual Return 2014 rr_AnnualReturn2014 0.01% [2]
Annual Return 2015 rr_AnnualReturn2015 0.01% [2]
Annual Return 2016 rr_AnnualReturn2016 0.01% [2]
Annual Return 2017 rr_AnnualReturn2017 0.21% [2]
Annual Return 2018 rr_AnnualReturn2018 1.12% [2]
Annual Return 2019 rr_AnnualReturn2019 1.50% [2]
Annual Return 2020 rr_AnnualReturn2020 0.18% [2]
Annual Return 2021 rr_AnnualReturn2021 0.01% [2]
Annual Return 2022 rr_AnnualReturn2022 1.09% [2]
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Best Quarter:

Quarter ended December 31, 2022

0.72%
     
Worst Quarter: Quarter ended March 31, 2022* 0.00%
     
*   Most recent quarter with this return during the period of the chart.
Year to Date Return, Label rr_YearToDateReturnLabel Total return for the period 1/1/2023 through 9/30/2023
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2023
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 3.17%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2022
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 0.72%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2022 [3]
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn none
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS AS OF 12/31/22
1 Year rr_AverageAnnualReturnYear01 1.09% [4]
5 Years rr_AverageAnnualReturnYear05 0.78% [4]
10 Years rr_AverageAnnualReturnYear10 0.41% [4]
Inception Date rr_AverageAnnualReturnInceptionDate Sep. 24, 2001 [4]
Government Obligations Fund | Class A Shares | Risk Lose Money [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock You could lose money by investing in the fund.
Government Obligations Fund | Class A Shares | Credit Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Credit Risk — The value of your investment might decline if the issuer of an obligation held by the fund defaults on the obligation or has its credit rating downgraded.

Government Obligations Fund | Class A Shares | Interest Rate Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Interest Rate Risk — The value of your investment might decline because of a sharp rise in interest rates that causes the value of the fund’s portfolio holdings to fall. During periods when interest rates are low or there are negative interest rates, the fund’s yield (and total return) also may be low or the fund may be unable to maintain positive returns.

Government Obligations Fund | Class A Shares | Market Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Market Risk — Market volatility, dramatic changes to interest rates, and otherwise unfavorable economic conditions resulting from major cybersecurity events, geopolitical events (including wars, such as Russia’s invasion of Ukraine, tensions in the Middle East, terror attacks, and disruptions to foreign economic and trade relationships), public health emergencies, among other events, may negatively impact the fund’s performance or impair the fund’s ability to achieve its investment objective.

Government Obligations Fund | Class A Shares | Liquidity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Liquidity Risk — The fund may not be able to sell a security in a timely manner or at a desired price, or may be unable to sell the security at all, because of a lack of demand in the market for the security.

Government Obligations Fund | Class A Shares | Redemption Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Redemption Risk — If there are unexpectedly high redemptions of fund shares, the fund might have to sell portfolio securities prior to their maturity, possibly at a loss.

Government Obligations Fund | Class A Shares | Repurchase Agreement Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Repurchase Agreement Risk — If the seller of a repurchase agreement defaults on its obligation to repurchase securities from the fund, the fund may incur costs in disposing of the collateral and may experience losses if there is any delay in its ability to do so.

Government Obligations Fund | Class A Shares | Income Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Income Risk — The level of income you receive from the fund will be affected by movements in short-term interest rates.

Government Obligations Fund | Class A Shares | Cybersecurity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Cybersecurity Risk — The fund may be subject to operational and informational security risks resulting from breaches in cybersecurity at the fund, the fund’s affiliates or service providers. A cybersecurity breach at an issuer of securities in which the fund invests may cause such securities to lose value.

Government Obligations Fund | Class A Shares | Regulatory Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Regulatory Risk — Changes to monetary policy by the Federal Reserve or other regulatory actions may impact the fund’s operations, universe of potential investment options, and return potential.

Government Obligations Fund | Class D Shares  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol FGDXX
Risk/Return [Heading] rr_RiskReturnHeading Government Obligations Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Government Obligations Fund’s objective is to seek maximum current income to the extent consistent with the preservation of capital and maintenance of liquidity.

Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following tables describe the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Maximum Cumulative Sales Charge (as a percentage of Offering Price) rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.10%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.15%
Component1 Other Expenses rr_Component1OtherExpensesOverAssets 0.25%
Component2 Other Expenses rr_Component2OtherExpensesOverAssets 0.10%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.60%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets none [5]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.60% [5]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2024
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

Example: This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and the fund’s operating expenses remain the same (except that the example incorporates the fund’s expense limitation arrangements for only the first year of each period presented). You would incur these hypothetical expenses whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 61
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 192
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 335
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 750
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Government Obligations Fund invests exclusively in short-term U.S. government securities, including repurchase agreements secured by U.S. government securities. U.S. government securities are bonds or other debt obligations issued or guaranteed as to principal and interest by the U.S. government or one of its agencies or instrumentalities. U.S. Treasury securities and some obligations of U.S. government agencies and instrumentalities are supported by the full faith and credit of the U.S. government. Other U.S. government securities are backed by the right of the issuer to borrow from the U.S. Treasury. Still others are supported only by the credit of the issuer or instrumentality.

Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the potential risks of investing in the fund. The fund’s past performance is not necessarily an indication of how the fund will perform in the future. Updated performance information is available online at www.firstamericanfunds.com or by calling 800 677-3863.

 

The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.

 

The performance shown in the bar chart and performance table is the performance of the fund’s predecessor entity, Government Obligations Fund, a series of First American Funds, Inc. (the “Predecessor Fund”), prior to the commencement of the fund’s operations. On December 22, 2023 the fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, the fund adopted the performance and financial history of the Predecessor Fund. The fund has the same investment objective, strategy, risks and investment adviser as the Predecessor Fund. As a result, the performance of the fund would have been substantially similar to that of the Predecessor Fund.

  

The bar chart shows the performance of the Predecessor Fund’s Class D shares which was adopted by the Class D shares of the fund for periods prior to the Reorganization. If the Predecessor Fund’s investment adviser had not waived or reimbursed certain Predecessor Fund expenses during these periods, the Predecessor Fund’s returns would have been lower.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart shows you the variability of the fund’s performance from year to year.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 677-3863
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.firstamericanfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund’s past performance is not necessarily an indication of how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading ANNUAL TOTAL RETURNS AS OF 12/31 EACH YEAR
Annual Return 2013 rr_AnnualReturn2013 0.01% [6]
Annual Return 2014 rr_AnnualReturn2014 0.01% [6]
Annual Return 2015 rr_AnnualReturn2015 0.01% [6]
Annual Return 2016 rr_AnnualReturn2016 0.01% [6]
Annual Return 2017 rr_AnnualReturn2017 0.33% [6]
Annual Return 2018 rr_AnnualReturn2018 1.28% [6]
Annual Return 2019 rr_AnnualReturn2019 1.65% [6]
Annual Return 2020 rr_AnnualReturn2020 0.21% [6]
Annual Return 2021 rr_AnnualReturn2021 0.01% [6]
Annual Return 2022 rr_AnnualReturn2022 1.18% [6]
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Best Quarter: Quarter ended December 31, 2022 0.75%
Worst Quarter: Quarter ended March 31, 2022* 0.00%

*   Most recent quarter with this return during the period of the chart.
Year to Date Return, Label rr_YearToDateReturnLabel Total return for the period 1/1/2023 through 9/30/2023
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2023
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 3.28%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2022
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 0.75%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2022 [7]
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn none
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS AS OF 12/31/22
1 Year rr_AverageAnnualReturnYear01 1.18% [8]
5 Years rr_AverageAnnualReturnYear05 0.86% [8]
10 Years rr_AverageAnnualReturnYear10 0.47% [8]
Inception Date rr_AverageAnnualReturnInceptionDate Jan. 21, 1995 [8]
Government Obligations Fund | Class D Shares | Risk Lose Money [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock You could lose money by investing in the fund.
Government Obligations Fund | Class D Shares | Credit Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Credit Risk — The value of your investment might decline if the issuer of an obligation held by the fund defaults on the obligation or has its credit rating downgraded.

Government Obligations Fund | Class D Shares | Interest Rate Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Interest Rate Risk — The value of your investment might decline because of a sharp rise in interest rates that causes the value of the fund’s portfolio holdings to fall. During periods when interest rates are low or there are negative interest rates, the fund’s yield (and total return) also may be low or the fund may be unable to maintain positive returns.

Government Obligations Fund | Class D Shares | Market Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Market Risk — Market volatility, dramatic changes to interest rates, and otherwise unfavorable economic conditions resulting from major cybersecurity events, geopolitical events (including wars, such as Russia’s invasion of Ukraine, tensions in the Middle East, terror attacks, and disruptions to foreign economic and trade relationships), public health emergencies, among other events, may negatively impact the fund’s performance or impair the fund’s ability to achieve its investment objective.

Government Obligations Fund | Class D Shares | Liquidity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Liquidity Risk — The fund may not be able to sell a security in a timely manner or at a desired price, or may be unable to sell the security at all, because of a lack of demand in the market for the security.

Government Obligations Fund | Class D Shares | Redemption Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Redemption Risk — If there are unexpectedly high redemptions of fund shares, the fund might have to sell portfolio securities prior to their maturity, possibly at a loss.

Government Obligations Fund | Class D Shares | Repurchase Agreement Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Repurchase Agreement Risk — If the seller of a repurchase agreement defaults on its obligation to repurchase securities from the fund, the fund may incur costs in disposing of the collateral and may experience losses if there is any delay in its ability to do so.

Government Obligations Fund | Class D Shares | Income Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Income Risk — The level of income you receive from the fund will be affected by movements in short-term interest rates.

Government Obligations Fund | Class D Shares | Cybersecurity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Cybersecurity Risk — The fund may be subject to operational and informational security risks resulting from breaches in cybersecurity at the fund, the fund’s affiliates or service providers. A cybersecurity breach at an issuer of securities in which the fund invests may cause such securities to lose value.

Government Obligations Fund | Class D Shares | Regulatory Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Regulatory Risk — Changes to monetary policy by the Federal Reserve or other regulatory actions may impact the fund’s operations, universe of potential investment options, and return potential.

Government Obligations Fund | Class P Shares  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol FPPXX
Risk/Return [Heading] rr_RiskReturnHeading Government Obligations Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Government Obligations Fund’s objective is to seek maximum current income to the extent consistent with the preservation of capital and maintenance of liquidity.

Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following tables describe the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Maximum Cumulative Sales Charge (as a percentage of Offering Price) rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.10%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets 0.10%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.20%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.02%) [9]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.18% [9]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2024
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

Example: This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and the fund’s operating expenses remain the same (except that the example incorporates the fund’s expense limitation arrangements for only the first year of each period presented). You would incur these hypothetical expenses whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 18
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 62
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 111
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 253
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Government Obligations Fund invests exclusively in short-term U.S. government securities, including repurchase agreements secured by U.S. government securities. U.S. government securities are bonds or other debt obligations issued or guaranteed as to principal and interest by the U.S. government or one of its agencies or instrumentalities. U.S. Treasury securities and some obligations of U.S. government agencies and instrumentalities are supported by the full faith and credit of the U.S. government. Other U.S. government securities are backed by the right of the issuer to borrow from the U.S. Treasury. Still others are supported only by the credit of the issuer or instrumentality.

Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the potential risks of investing in the fund. The fund’s past performance is not necessarily an indication of how the fund will perform in the future. Updated performance information is available online at www.firstamericanfunds.com or by calling 800 677-3863.

 

The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.

 

The performance shown in the bar chart and performance table is the performance of the fund's predecessor entity, Government Obligations Fund, a series of First American Funds, Inc. (the “Predecessor Fund”), prior to the commencement of the fund’s operations. On December 22, 2023 the fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, the fund adopted the performance and financial history of the Predecessor Fund. The fund has the same investment objective, strategy, risks and investment adviser as the Predecessor Fund. As a result, the performance of the fund would have been substantially similar to that of the Predecessor Fund.

 

The bar chart shows the performance of the Predecessor Fund’s Class P shares which was adopted by the Class P shares of the fund for periods prior to the Reorganization. If the Predecessor Fund’s investment adviser had not waived or reimbursed certain Predecessor Fund expenses during these periods, the Predecessor Fund’s returns would have been lower.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart shows you the variability of the fund’s performance from year to year.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 677-3863
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.firstamericanfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund’s past performance is not necessarily an indication of how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading ANNUAL TOTAL RETURNS AS OF 12/31 EACH YEAR
Annual Return 2018 rr_AnnualReturn2018 1.73% [10]
Annual Return 2019 rr_AnnualReturn2019 2.11% [10]
Annual Return 2020 rr_AnnualReturn2020 0.38% [10]
Annual Return 2021 rr_AnnualReturn2021 0.03% [10]
Annual Return 2022 rr_AnnualReturn2022 1.51% [10]
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Best Quarter: Quarter ended December 31, 2022 0.87%
Worst Quarter: Quarter ended March 31, 2022* 0.00%
*   Most recent quarter with this return during the period of the chart.
Year to Date Return, Label rr_YearToDateReturnLabel Total return for the period 1/1/2023 through 9/30/2023
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2023
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 3.62%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2022
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 0.87%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2022 [11]
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn none
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS AS OF 12/31/22
1 Year rr_AverageAnnualReturnYear01 1.51% [12]
5 Years rr_AverageAnnualReturnYear05 1.15% [12]
10 Years rr_AverageAnnualReturnYear10 1.15% [12]
Inception Date rr_AverageAnnualReturnInceptionDate Dec. 18, 2017 [12]
Government Obligations Fund | Class P Shares | Risk Lose Money [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock You could lose money by investing in the fund.
Government Obligations Fund | Class P Shares | Credit Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Credit Risk — The value of your investment might decline if the issuer of an obligation held by the fund defaults on the obligation or has its credit rating downgraded.

Government Obligations Fund | Class P Shares | Interest Rate Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Interest Rate Risk — The value of your investment might decline because of a sharp rise in interest rates that causes the value of the fund’s portfolio holdings to fall. During periods when interest rates are low or there are negative interest rates, the fund’s yield (and total return) also may be low or the fund may be unable to maintain positive returns.

Government Obligations Fund | Class P Shares | Market Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Market Risk — Market volatility, dramatic changes to interest rates, and otherwise unfavorable economic conditions resulting from major cybersecurity events, geopolitical events (including wars, such as Russia's invasion of Ukraine, tensions in the Middle East, terror attacks, and disruptions to foreign economic and trade relationships), public health emergencies, among other events, may negatively impact the fund's performance or impair the fund's ability to achieve its investment objective.

Government Obligations Fund | Class P Shares | Liquidity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Liquidity Risk — The fund may not be able to sell a security in a timely manner or at a desired price, or may be unable to sell the security at all, because of a lack of demand in the market for the security.

Government Obligations Fund | Class P Shares | Redemption Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Redemption Risk — If there are unexpectedly high redemptions of fund shares, the fund might have to sell portfolio securities prior to their maturity, possibly at a loss.

Government Obligations Fund | Class P Shares | Repurchase Agreement Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Repurchase Agreement Risk — If the seller of a repurchase agreement defaults on its obligation to repurchase securities from the fund, the fund may incur costs in disposing of the collateral and may experience losses if there is any delay in its ability to do so.

Government Obligations Fund | Class P Shares | Income Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Income Risk — The level of income you receive from the fund will be affected by movements in short-term interest rates.

Government Obligations Fund | Class P Shares | Cybersecurity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Cybersecurity Risk — The fund may be subject to operational and informational security risks resulting from breaches in cybersecurity at the fund, the fund’s affiliates or service providers. A cybersecurity breach at an issuer of securities in which the fund invests may cause such securities to lose value.

Government Obligations Fund | Class P Shares | Regulatory Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Regulatory Risk — Changes to monetary policy by the Federal Reserve or other regulatory actions may impact the fund’s operations, universe of potential investment options, and return potential.

Government Obligations Fund | Class T Shares  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol FTGXX
Risk/Return [Heading] rr_RiskReturnHeading Government Obligations Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Government Obligations Fund’s objective is to seek maximum current income to the extent consistent with the preservation of capital and maintenance of liquidity.

Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following tables describe the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Maximum Cumulative Sales Charge (as a percentage of Offering Price) rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.10%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Component1 Other Expenses rr_Component1OtherExpensesOverAssets 0.20%
Component2 Other Expenses rr_Component2OtherExpensesOverAssets 0.10%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.40%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets none [13]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.40% [13]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2024
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

Example: This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and the fund’s operating expenses remain the same (except that the example incorporates the fund’s expense limitation arrangements for only the first year of each period presented). You would incur these hypothetical expenses whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 41
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 128
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 224
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 505
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Government Obligations Fund invests exclusively in short-term U.S. government securities, including repurchase agreements secured by U.S. government securities. U.S. government securities are bonds or other debt obligations issued or guaranteed as to principal and interest by the U.S. government or one of its agencies or instrumentalities. U.S. Treasury securities and some obligations of U.S. government agencies and instrumentalities are supported by the full faith and credit of the U.S. government. Other U.S. government securities are backed by the right of the issuer to borrow from the U.S. Treasury. Still others are supported only by the credit of the issuer or instrumentality.

Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the potential risks of investing in the fund. The fund’s past performance is not necessarily an indication of how the fund will perform in the future. Updated performance information is available online at firstamericanfunds.com or by calling 800 677-3863.

 

The bar chart shows the fund’s Class T performance for the period indicated. The table illustrates the fund’s average annual total returns over the time periods indicated. The bar chart does not reflect sales loads as none are applicable to Class T shares.

 

The performance shown in the bar chart and performance table is the performance of the fund’s predecessor entity, Government Obligations Fund, a series of First American Funds, Inc. (the “Predecessor Fund”), prior to the commencement of the fund’s operations. On December 22, 2023 the fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, the fund adopted the performance and financial history of the Predecessor Fund. The fund has the same investment objective, strategy, risks and investment adviser as the Predecessor Fund. As a result, the performance of the fund would have been substantially similar to that of the Predecessor Fund.

 

The bar chart shows the performance of the Predecessor Fund’s Class T shares which was adopted by the Class T shares of the fund for periods prior to the Reorganization. If the Predecessor Fund’s investment adviser had not waived or reimbursed certain Predecessor Fund expenses during these periods, the Predecessor Fund’s returns would have been lower.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart shows the fund’s Class T performance for the period indicated.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 677-3863
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress firstamericanfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund’s past performance is not necessarily an indication of how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading ANNUAL TOTAL RETURNS AS OF 12/31 EACH YEAR
Annual Return 2021 rr_AnnualReturn2021 0.01% [14]
Annual Return 2022 rr_AnnualReturn2022 1.31% [14]
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Best Quarter: Quarter ended December 31, 2022 0.80%
Worst Quarter: Quarter ended March 31, 2022* 0.00%

*   Most recent quarter with this return during the period of the chart.

Year to Date Return, Label rr_YearToDateReturnLabel Total return for the period 1/1/2023 through 9/30/2023
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2023
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 3.44%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2022 [15]
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 0.80%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2022 [15]
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn none
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS AS OF 12/31/22
1 Year rr_AverageAnnualReturnYear01 1.31% [16]
Since Inception rr_AverageAnnualReturnSinceInception 0.58% [16]
Inception Date rr_AverageAnnualReturnInceptionDate Sep. 18, 2020 [16]
Government Obligations Fund | Class T Shares | Risk Lose Money [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock You could lose money by investing in the fund.
Government Obligations Fund | Class T Shares | Credit Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Credit Risk — The value of your investment might decline if the issuer of an obligation held by the fund defaults on the obligation or has its credit rating downgraded.

Government Obligations Fund | Class T Shares | Interest Rate Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Interest Rate Risk — The value of your investment might decline because of a sharp rise in interest rates that causes the value of the fund’s portfolio holdings to fall. During periods when interest rates are low or there are negative interest rates, the fund’s yield (and total return) also may be low or the fund may be unable to maintain positive returns.

Government Obligations Fund | Class T Shares | Market Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Market Risk — Market volatility, dramatic changes to interest rates, and otherwise unfavorable economic conditions resulting from major cybersecurity events, geopolitical events (including wars, such as Russia’s invasion of Ukraine, tensions in the Middle East, terror attacks, and disruptions to foreign economic and trade relationships), public health emergencies, among other events, may negatively impact the fund’s performance or impair the fund’s ability to achieve its investment objective.

Government Obligations Fund | Class T Shares | Liquidity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Liquidity Risk — The fund may not be able to sell a security in a timely manner or at a desired price, or may be unable to sell the security at all, because of a lack of demand in the market for the security.

Government Obligations Fund | Class T Shares | Redemption Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Redemption Risk — If there are unexpectedly high redemptions of fund shares, the fund might have to sell portfolio securities prior to their maturity, possibly at a loss.

Government Obligations Fund | Class T Shares | Repurchase Agreement Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Repurchase Agreement Risk — If the seller of a repurchase agreement defaults on its obligation to repurchase securities from the fund, the fund may incur costs in disposing of the collateral and may experience losses if there is any delay in its ability to do so.

Government Obligations Fund | Class T Shares | Income Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Income Risk — The level of income you receive from the fund will be affected by movements in short-term interest rates. 

Government Obligations Fund | Class T Shares | Cybersecurity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Cybersecurity Risk — The fund may be subject to operational and informational security risks resulting from breaches in cybersecurity at the fund, the fund’s affiliates or service providers. A cybersecurity breach at an issuer of securities in which the fund invests may cause such securities to lose value.

Government Obligations Fund | Class T Shares | Regulatory Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Regulatory Risk — Changes to monetary policy by the Federal Reserve or other regulatory actions may impact the fund’s operations, universe of potential investment options, and return potential.

Government Obligations Fund | Class U Shares  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol FGUXX
Risk/Return [Heading] rr_RiskReturnHeading Government Obligations Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Government Obligations Fund’s objective is to seek maximum current income to the extent consistent with the preservation of capital and maintenance of liquidity.

Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following tables describe the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Maximum Cumulative Sales Charge (as a percentage of Offering Price) rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.10%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets 0.10%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.20%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.08%) [17]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.12% [17]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2024
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

Example: This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and the fund’s operating expenses remain the same (except that the example incorporates the fund’s expense limitation arrangements for only the first year of each period presented). You would incur these hypothetical expenses whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 12
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 56
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 105
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 247
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Government Obligations Fund invests exclusively in short-term U.S. government securities, including repurchase agreements secured by U.S. government securities. U.S. government securities are bonds or other debt obligations issued or guaranteed as to principal and interest by the U.S. government or one of its agencies or instrumentalities. U.S. Treasury securities and some obligations of U.S. government agencies and instrumentalities are supported by the full faith and credit of the U.S. government. Other U.S. government securities are backed by the right of the issuer to borrow from the U.S. Treasury. Still others are supported only by the credit of the issuer or instrumentality.

Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the potential risks of investing in the fund. The fund’s past performance is not necessarily an indication of how the fund will perform in the future. Updated performance information is available online at www.firstamericanfunds.com or by calling 800 677-3863.

 

The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.

 

The performance shown in the bar chart and performance table is the performance of the fund’s predecessor entity, Government Obligations Fund, a series of First American Funds, Inc. (the “Predecessor Fund”), prior to the commencement of the fund’s operations. On December 22, 2023 the fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, the fund adopted the performance and financial history of the Predecessor Fund. The fund has the same investment objective, strategy, risks and investment adviser as the Predecessor Fund. As a result, the performance of the fund would have been substantially similar to that of the Predecessor Fund.

 

The bar chart shows the performance of the Predecessor Fund’s Class U shares which was adopted by the Class U shares of the fund for periods prior to the Reorganization. If the Predecessor Fund’s investment adviser had not waived or reimbursed certain Predecessor Fund expenses during these periods, the Predecessor Fund’s returns would have been lower.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart shows you the variability of the fund’s performance from year to year.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 677-3863
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.firstamericanfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund’s past performance is not necessarily an indication of how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading ANNUAL TOTAL RETURNS AS OF 12/31 EACH YEAR
Annual Return 2019 rr_AnnualReturn2019 2.14% [18]
Annual Return 2020 rr_AnnualReturn2020 0.41% [18]
Annual Return 2021 rr_AnnualReturn2021 0.03% [18]
Annual Return 2022 rr_AnnualReturn2022 1.53% [18]
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Best Quarter: Quarter ended December 31, 2022 0.88%
     
Worst Quarter: Quarter ended March 31, 2022* 0.01%
     
*   Most recent quarter with this return during the period of the chart.
Year to Date Return, Label rr_YearToDateReturnLabel Total return for the period 1/1/2023 through 9/30/2023
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2023
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 3.65%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2022
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 0.88%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2022 [19]
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn 0.01%
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS AS OF 12/31/22
1 Year rr_AverageAnnualReturnYear01 1.53% [20]
Since Inception rr_AverageAnnualReturnSinceInception 1.17% [20]
Inception Date rr_AverageAnnualReturnInceptionDate Feb. 26, 2018 [20]
Government Obligations Fund | Class U Shares | Risk Lose Money [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock You could lose money by investing in the fund.
Government Obligations Fund | Class U Shares | Credit Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Credit Risk — The value of your investment might decline if the issuer of an obligation held by the fund defaults on the obligation or has its credit rating downgraded.

Government Obligations Fund | Class U Shares | Interest Rate Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Interest Rate Risk — The value of your investment might decline because of a sharp rise in interest rates that causes the value of the fund’s portfolio holdings to fall. During periods when interest rates are low or there are negative interest rates, the fund’s yield (and total return) also may be low or the fund may be unable to maintain positive returns.

Government Obligations Fund | Class U Shares | Market Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Market Risk — Market volatility, dramatic changes to interest rates, and otherwise unfavorable economic conditions resulting from major cybersecurity events, geopolitical events (including wars, such as Russia's invasion of Ukraine, tensions in the Middle East, terror attacks, and disruptions to foreign economic and trade relationships), public health emergencies, among other events, may negatively impact the fund's performance or impair the fund's ability to achieve its investment objective.

Government Obligations Fund | Class U Shares | Liquidity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Liquidity Risk — The fund may not be able to sell a security in a timely manner or at a desired price, or may be unable to sell the security at all, because of a lack of demand in the market for the security.

Government Obligations Fund | Class U Shares | Redemption Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Redemption Risk — If there are unexpectedly high redemptions of fund shares, the fund might have to sell portfolio securities prior to their maturity, possibly at a loss.

Government Obligations Fund | Class U Shares | Repurchase Agreement Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Repurchase Agreement Risk — If the seller of a repurchase agreement defaults on its obligation to repurchase securities from the fund, the fund may incur costs in disposing of the collateral and may experience losses if there is any delay in its ability to do so.

Government Obligations Fund | Class U Shares | Income Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Income Risk — The level of income you receive from the fund will be affected by movements in short-term interest rates.

Government Obligations Fund | Class U Shares | Cybersecurity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Cybersecurity Risk — The fund may be subject to operational and informational security risks resulting from breaches in cybersecurity at the fund, the fund’s affiliates or service providers. A cybersecurity breach at an issuer of securities in which the fund invests may cause such securities to lose value.

Government Obligations Fund | Class U Shares | Regulatory Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Regulatory Risk — Changes to monetary policy by the Federal Reserve or other regulatory actions may impact the fund’s operations, universe of potential investment options, and return potential.

Government Obligations Fund | Class V Shares  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol FVIXX
Risk/Return [Heading] rr_RiskReturnHeading Government Obligations Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Government Obligations Fund’s objective is to seek maximum current income to the extent consistent with the preservation of capital and maintenance of liquidity.

Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following tables describe the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Maximum Cumulative Sales Charge (as a percentage of Offering Price) rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.10%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Component1 Other Expenses rr_Component1OtherExpensesOverAssets 0.10%
Component2 Other Expenses rr_Component2OtherExpensesOverAssets 0.10%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.30%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets none [21]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.30% [21]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2024
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

Example: This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and the fund’s operating expenses remain the same (except that the example incorporates the fund’s expense limitation arrangements for only the first year of each period presented). You would incur these hypothetical expenses whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 31
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 97
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 169
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 381
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Government Obligations Fund invests exclusively in short-term U.S. government securities, including repurchase agreements secured by U.S. government securities. U.S. government securities are bonds or other debt obligations issued or guaranteed as to principal and interest by the U.S. government or one of its agencies or instrumentalities. U.S. Treasury securities and some obligations of U.S. government agencies and instrumentalities are supported by the full faith and credit of the U.S. government. Other U.S. government securities are backed by the right of the issuer to borrow from the U.S. Treasury. Still others are supported only by the credit of the issuer or instrumentality.

Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the potential risks of investing in the fund. The fund’s past performance is not necessarily an indication of how the fund will perform in the future. Updated performance information is available online at www.firstamericanfunds.com or by calling 800 677-3863.

 

The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.

 

The performance shown in the bar chart and performance table is the performance of the fund’s predecessor entity, Government Obligations Fund, a series of First American Funds, Inc. (the “Predecessor Fund”), prior to the commencement of the fund’s operations. On December 22, 2023 the fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, the fund adopted the performance and financial history of the Predecessor Fund. The fund has the same investment objective, strategy, risks and investment adviser as the Predecessor Fund. As a result, the performance of the fund would have been substantially similar to that of the Predecessor Fund.

 

The bar chart shows the performance of the Predecessor Fund’s Class V shares which was adopted by the Class V shares of the fund for periods prior to the Reorganization. If the Predecessor Fund’s investment adviser had not waived or reimbursed certain Predecessor Fund expenses during these periods, the Predecessor Fund’s returns would have been lower.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart shows you the variability of the fund’s performance from year to year.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 677-3863
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.firstamericanfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund’s past performance is not necessarily an indication of how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading ANNUAL TOTAL RETURNS AS OF 12/31 EACH YEAR
Annual Return 2013 rr_AnnualReturn2013 0.01% [22]
Annual Return 2014 rr_AnnualReturn2014 0.01% [22]
Annual Return 2015 rr_AnnualReturn2015 0.01% [22]
Annual Return 2016 rr_AnnualReturn2016 0.11% [22]
Annual Return 2017 rr_AnnualReturn2017 0.63% [22]
Annual Return 2018 rr_AnnualReturn2018 1.58% [22]
Annual Return 2019 rr_AnnualReturn2019 1.96% [22]
Annual Return 2020 rr_AnnualReturn2020 0.30% [22]
Annual Return 2021 rr_AnnualReturn2021 0.01% [22]
Annual Return 2022 rr_AnnualReturn2022 1.38% [22]
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Best Quarter: Quarter ended December 31, 2022 0.83%
Worst Quarter: Quarter ended March 31, 2022* 0.00%
*   Most recent quarter with this return during the period of the chart.

Year to Date Return, Label rr_YearToDateReturnLabel Total return for the period 1/1/2023 through 9/30/2023
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2023
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 3.52%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2022
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 0.83%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2022 [23]
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn none
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS AS OF 12/31/22
1 Year rr_AverageAnnualReturnYear01 1.38% [24]
5 Years rr_AverageAnnualReturnYear05 1.04% [24]
10 Years rr_AverageAnnualReturnYear10 0.60% [24]
Inception Date rr_AverageAnnualReturnInceptionDate Mar. 31, 2006 [24]
Government Obligations Fund | Class V Shares | Risk Lose Money [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock You could lose money by investing in the fund.
Government Obligations Fund | Class V Shares | Credit Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Credit Risk — The value of your investment might decline if the issuer of an obligation held by the fund defaults on the obligation or has its credit rating downgraded.

Government Obligations Fund | Class V Shares | Interest Rate Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Interest Rate Risk — The value of your investment might decline because of a sharp rise in interest rates that causes the value of the fund’s portfolio holdings to fall. During periods when interest rates are low or there are negative interest rates, the fund’s yield (and total return) also may be low or the fund may be unable to maintain positive returns.

Government Obligations Fund | Class V Shares | Market Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Market Risk — Market volatility, dramatic changes to interest rates, and otherwise unfavorable economic conditions resulting from major cybersecurity events, geopolitical events (including wars, such as Russia’s invasion of Ukraine, tensions in the Middle East, terror attacks, and disruptions to foreign economic and trade relationships), public health emergencies, among other events, may negatively impact the fund’s performance or impair the fund’s ability to achieve its investment objective.

Government Obligations Fund | Class V Shares | Liquidity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Liquidity Risk — The fund may not be able to sell a security in a timely manner or at a desired price, or may be unable to sell the security at all, because of a lack of demand in the market for the security.

Government Obligations Fund | Class V Shares | Redemption Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Redemption Risk — If there are unexpectedly high redemptions of fund shares, the fund might have to sell portfolio securities prior to their maturity, possibly at a loss.

Government Obligations Fund | Class V Shares | Repurchase Agreement Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Repurchase Agreement Risk — If the seller of a repurchase agreement defaults on its obligation to repurchase securities from the fund, the fund may incur costs in disposing of the collateral and may experience losses if there is any delay in its ability to do so.

Government Obligations Fund | Class V Shares | Income Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Income Risk — The level of income you receive from the fund will be affected by movements in short-term interest rates.

Government Obligations Fund | Class V Shares | Cybersecurity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Cybersecurity Risk — The fund may be subject to operational and informational security risks resulting from breaches in cybersecurity at the fund, the fund’s affiliates or service providers. A cybersecurity breach at an issuer of securities in which the fund invests may cause such securities to lose value.

Government Obligations Fund | Class V Shares | Regulatory Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Regulatory Risk — Changes to monetary policy by the Federal Reserve or other regulatory actions may impact the fund’s operations, universe of potential investment options, and return potential.

Government Obligations Fund | Class X Shares  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol FGXXX
Risk/Return [Heading] rr_RiskReturnHeading Government Obligations Fund 
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Government Obligations Fund’s objective is to seek maximum current income to the extent consistent with the preservation of capital and maintenance of liquidity.

Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following tables describe the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Maximum Cumulative Sales Charge (as a percentage of Offering Price) rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.10%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets 0.10%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.20%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.06%) [25]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.14% [25]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2024
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

Example: This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and the fund’s operating expenses remain the same (except that the example incorporates the fund’s expense limitation arrangements for only the first year of each period presented). You would incur these hypothetical expenses whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 14
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 58
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 107
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 249
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Government Obligations Fund invests exclusively in short-term U.S. government securities, including repurchase agreements secured by U.S. government securities. U.S. government securities are bonds or other debt obligations issued or guaranteed as to principal and interest by the U.S. government or one of its agencies or instrumentalities. U.S. Treasury securities and some obligations of U.S. government agencies and instrumentalities are supported by the full faith and credit of the U.S. government. Other U.S. government securities are backed by the right of the issuer to borrow from the U.S. Treasury. Still others are supported only by the credit of the issuer or instrumentality.

Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the potential risks of investing in the fund. The fund’s past performance is not necessarily an indication of how the fund will perform in the future. Updated performance information is available online at www.firstamericanfunds.com or by calling 800 677-3863.

 

The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual returns over the time periods indicated.

 

The performance shown in the bar chart and performance table is the performance of the fund’s predecessor entity, Government Obligations Fund, a series of First American Funds, Inc. (the “Predecessor Fund”), prior to the commencement of the fund’s operations. On December 22, 2023 the fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, the fund adopted the performance and financial history of the Predecessor Fund. The fund has the same investment objective, strategy, risks and investment adviser as the Predecessor Fund. As a result, the performance of the fund would have been substantially similar to that of the Predecessor Fund.

 

The bar chart shows the performance of the Predecessor Fund’s Class X shares which was adopted by the Class X shares of the fund for periods prior to the Reorganization. If the Predecessor Fund’s investment adviser had not waived or reimbursed certain Predecessor Fund expenses during these periods, the Predecessor Fund’s returns would have been lower.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual returns over the time periods indicated.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 677-3863
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.firstamericanfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund’s past performance is not necessarily an indication of how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading ANNUAL TOTAL RETURNS AS OF 12/31 EACH YEAR
Annual Return 2017 rr_AnnualReturn2017 0.79% [26]
Annual Return 2018 rr_AnnualReturn2018 1.74% [26]
Annual Return 2019 rr_AnnualReturn2019 2.12% [26]
Annual Return 2020 rr_AnnualReturn2020 0.40% [26]
Annual Return 2021 rr_AnnualReturn2021 0.03% [26]
Annual Return 2022 rr_AnnualReturn2022 1.52% [26]
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Best Quarter: Quarter ended December 31, 2022 0.87%
Worst Quarter: Quarter ended March 31, 2022* 0.01%

*   Most recent quarter with this return during the period of the chart.
Year to Date Return, Label rr_YearToDateReturnLabel Total return for the period 1/1/2023 through 9/30/2023
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2023
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 3.64%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2022
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 0.87%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2022 [27]
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn 0.01%
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS AS OF 12/31/22
1 Year rr_AverageAnnualReturnYear01 1.52% [28]
5 Years rr_AverageAnnualReturnYear05 1.16% [28]
10 Years rr_AverageAnnualReturnYear10 1.01% [28]
Inception Date rr_AverageAnnualReturnInceptionDate Apr. 05, 2016 [28]
Government Obligations Fund | Class X Shares | Risk Lose Money [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock You could lose money by investing in the fund.
Government Obligations Fund | Class X Shares | Credit Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Credit Risk — The value of your investment might decline if the issuer of an obligation held by the fund defaults on the obligation or has its credit rating downgraded.

Government Obligations Fund | Class X Shares | Interest Rate Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Interest Rate Risk — The value of your investment might decline because of a sharp rise in interest rates that causes the value of the fund’s portfolio holdings to fall. During periods when interest rates are low or there are negative interest rates, the fund’s yield (and total return) also may be low or the fund may be unable to maintain positive returns.

Government Obligations Fund | Class X Shares | Market Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Market Risk — Market volatility, dramatic changes to interest rates, and otherwise unfavorable economic conditions resulting from major cybersecurity events, geopolitical events (including wars, such as Russia’s invasion of Ukraine, tensions in the Middle East, terror attacks, and disruptions to foreign economic and trade relationships), public health emergencies, among other events, may negatively impact the fund’s performance or impair the fund’s ability to achieve its investment objective.

Government Obligations Fund | Class X Shares | Liquidity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Liquidity Risk — The fund may not be able to sell a security in a timely manner or at a desired price, or may be unable to sell the security at all, because of a lack of demand in the market for the security.

Government Obligations Fund | Class X Shares | Redemption Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Redemption Risk — If there are unexpectedly high redemptions of fund shares, the fund might have to sell portfolio securities prior to their maturity, possibly at a loss.

Government Obligations Fund | Class X Shares | Repurchase Agreement Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Repurchase Agreement Risk — If the seller of a repurchase agreement defaults on its obligation to repurchase securities from the fund, the fund may incur costs in disposing of the collateral and may experience losses if there is any delay in its ability to do so.

Government Obligations Fund | Class X Shares | Income Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Income Risk — The level of income you receive from the fund will be affected by movements in short-term interest rates. 

Government Obligations Fund | Class X Shares | Cybersecurity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Cybersecurity Risk — The fund may be subject to operational and informational security risks resulting from breaches in cybersecurity at the fund, the fund’s affiliates or service providers. A cybersecurity breach at an issuer of securities in which the fund invests may cause such securities to lose value.

Government Obligations Fund | Class X Shares | Regulatory Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Regulatory Risk — Changes to monetary policy by the Federal Reserve or other regulatory actions may impact the fund’s operations, universe of potential investment options, and return potential.

Government Obligations Fund | Class Y Shares  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol FGVXX
Risk/Return [Heading] rr_RiskReturnHeading Government Obligations Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Government Obligations Fund’s objective is to seek maximum current income to the extent consistent with the preservation of capital and maintenance of liquidity.

Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following tables describe the fees and expenses that you may pay if you buy, hold and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Maximum Cumulative Sales Charge (as a percentage of Offering Price) rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.10%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Component1 Other Expenses rr_Component1OtherExpensesOverAssets 0.25%
Component2 Other Expenses rr_Component2OtherExpensesOverAssets 0.10%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.45%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets none [29]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.45% [29]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2024
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

Example: This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and the fund’s operating expenses remain the same (except that the example incorporates the fund’s expense limitation arrangements for only the first year of each period presented). You would incur these hypothetical expenses whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 46
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 144
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 252
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 567
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Government Obligations Fund invests exclusively in short-term U.S. government securities, including repurchase agreements secured by U.S. government securities. U.S. government securities are bonds or other debt obligations issued or guaranteed as to principal and interest by the U.S. government or one of its agencies or instrumentalities. U.S. Treasury securities and some obligations of U.S. government agencies and instrumentalities are supported by the full faith and credit of the U.S. government. Other U.S. government securities are backed by the right of the issuer to borrow from the U.S. Treasury. Still others are supported only by the credit of the issuer or instrumentality.

Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the potential risks of investing in the fund. The fund’s past performance is not necessarily an indication of how the fund will perform in the future. Updated performance information is available online at www.firstamericanfunds.com or by calling 800 677-3863.

 

The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.

 

The performance shown in the bar chart and performance table is the performance of the fund’s predecessor entity, Government Obligations Fund, a series of First American Funds, Inc. (the “Predecessor Fund”), prior to the commencement of the fund’s operations. On December 22, 2023 the fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, the fund adopted the performance and financial history of the Predecessor Fund. The fund has the same investment objective, strategy, risks and investment adviser as the Predecessor Fund. As a result, the performance of the fund would have been substantially similar to that of the Predecessor Fund.

 

The bar chart shows the performance of the Predecessor Fund’s Class Y shares which was adopted by the Class Y shares of the fund for periods prior to the Reorganization. If the Predecessor Fund’s investment adviser had not waived or reimbursed certain Predecessor Fund expenses during these periods, the Predecessor Fund’s returns would have been lower.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 677-3863
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.firstamericanfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund’s past performance is not necessarily an indication of how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading ANNUAL TOTAL RETURNS AS OF 12/31 EACH YEAR
Annual Return 2013 rr_AnnualReturn2013 0.01% [30]
Annual Return 2014 rr_AnnualReturn2014 0.01% [30]
Annual Return 2015 rr_AnnualReturn2015 0.01% [30]
Annual Return 2016 rr_AnnualReturn2016 0.01% [30]
Annual Return 2017 rr_AnnualReturn2017 0.48% [30]
Annual Return 2018 rr_AnnualReturn2018 1.43% [30]
Annual Return 2019 rr_AnnualReturn2019 1.81% [30]
Annual Return 2020 rr_AnnualReturn2020 0.25% [30]
Annual Return 2021 rr_AnnualReturn2021 0.01% [30]
Annual Return 2022 rr_AnnualReturn2022 1.28% [30]
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Best Quarter: Quarter ended December 31, 2022 0.87%
     
Worst Quarter: Quarter ended March 31, 2022* 0.01%
     
*   Most recent quarter with this return during the period of the chart.
Year to Date Return, Label rr_YearToDateReturnLabel Total return for the period 1/1/2023 through 9/30/2023
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2023
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 3.40%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2022 [31]
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 0.87%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2022 [31]
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn 0.01%
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS AS OF 12/31/22
1 Year rr_AverageAnnualReturnYear01 1.52% [32]
5 Years rr_AverageAnnualReturnYear05 1.16% [32]
10 Years rr_AverageAnnualReturnYear10 1.01% [32]
Inception Date rr_AverageAnnualReturnInceptionDate Mar. 01, 1990 [32]
Government Obligations Fund | Class Y Shares | Risk Lose Money [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock You could lose money by investing in the fund.
Government Obligations Fund | Class Y Shares | Credit Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Credit Risk — The value of your investment might decline if the issuer of an obligation held by the fund defaults on the obligation or has its credit rating downgraded.

Government Obligations Fund | Class Y Shares | Interest Rate Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Interest Rate Risk — The value of your investment might decline because of a sharp rise in interest rates that causes the value of the fund’s portfolio holdings to fall. During periods when interest rates are low or there are negative interest rates, the fund’s yield (and total return) also may be low or the fund may be unable to maintain positive returns.

Government Obligations Fund | Class Y Shares | Market Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Market Risk — Market volatility, dramatic changes to interest rates, and otherwise unfavorable economic conditions resulting from major cybersecurity events, geopolitical events (including wars, such as Russia’s invasion of Ukraine, tensions in the Middle East, terror attacks, and disruptions to foreign economic and trade relationships), public health emergencies, among other events, may negatively impact the fund’s performance or impair the fund’s ability to achieve its investment objective.

Government Obligations Fund | Class Y Shares | Liquidity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Liquidity Risk — The fund may not be able to sell a security in a timely manner or at a desired price, or may be unable to sell the security at all, because of a lack of demand in the market for the security.

Government Obligations Fund | Class Y Shares | Redemption Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Redemption Risk — If there are unexpectedly high redemptions of fund shares, the fund might have to sell portfolio securities prior to their maturity, possibly at a loss.

Government Obligations Fund | Class Y Shares | Repurchase Agreement Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Repurchase Agreement Risk — If the seller of a repurchase agreement defaults on its obligation to repurchase securities from the fund, the fund may incur costs in disposing of the collateral and may experience losses if there is any delay in its ability to do so.

Government Obligations Fund | Class Y Shares | Income Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Income Risk — The level of income you receive from the fund will be affected by movements in short-term interest rates.

Government Obligations Fund | Class Y Shares | Cybersecurity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Cybersecurity Risk — The fund may be subject to operational and informational security risks resulting from breaches in cybersecurity at the fund, the fund’s affiliates or service providers. A cybersecurity breach at an issuer of securities in which the fund invests may cause such securities to lose value.

Government Obligations Fund | Class Y Shares | Regulatory Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Regulatory Risk — Changes to monetary policy by the Federal Reserve or other regulatory actions may impact the fund’s operations, universe of potential investment options, and return potential.

Government Obligations Fund | Class Z Shares  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol FGZXX
Risk/Return [Heading] rr_RiskReturnHeading Government Obligations Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Government Obligations Fund’s objective is to seek maximum current income to the extent consistent with the preservation of capital and maintenance of liquidity.

Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following tables describe the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Maximum Cumulative Sales Charge (as a percentage of Offering Price) rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.10%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets 0.10%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.20%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.02%) [33]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.18% [33]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2024
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

Example: This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and the fund’s operating expenses remain the same (except that the example incorporates the fund’s expense limitation arrangements for only the first year of each period presented). You would incur these hypothetical expenses whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 18
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 62
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 111
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 253
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Government Obligations Fund invests exclusively in short-term U.S. government securities, including repurchase agreements secured by U.S. government securities. U.S. government securities are bonds or other debt obligations issued or guaranteed as to principal and interest by the U.S. government or one of its agencies or instrumentalities. U.S. Treasury securities and some obligations of U.S. government agencies and instrumentalities are supported by the full faith and credit of the U.S. government. Other U.S. government securities are backed by the right of the issuer to borrow from the U.S. Treasury. Still others are supported only by the credit of the issuer or instrumentality.

Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the potential risks of investing in the fund. The fund’s past performance is not necessarily an indication of how the fund will perform in the future. Updated performance information is available online at www.firstamericanfunds.com or by calling 800 677-3863.

 

The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.

 

The performance shown in the bar chart and performance table is the performance of the fund’s predecessor entity, Government Obligations Fund, a series of First American Funds, Inc. (the “Predecessor Fund”), prior to the commencement of the fund’s operations. On December 22, 2023 the fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, the fund adopted the performance and financial history of the Predecessor Fund. The fund has the same investment objective, strategy, risks and investment adviser as the Predecessor Fund. As a result, the performance of the fund would have been substantially similar to that of the Predecessor Fund.

 

The bar chart shows the performance of the Predecessor Fund’s Class Z shares which was adopted by the Class Z shares of the fund for periods prior to the Reorganization. If the Predecessor Fund’s investment adviser had not waived or reimbursed certain Predecessor Fund expenses during these periods, the Predecessor Fund’s returns would have been lower.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart shows you the variability of the fund’s performance from year to year.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 677-3863
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.firstamericanfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund’s past performance is not necessarily an indication of how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading ANNUAL TOTAL RETURNS AS OF 12/31 EACH YEAR
Annual Return 2013 rr_AnnualReturn2013 0.01% [34]
Annual Return 2014 rr_AnnualReturn2014 0.01% [34]
Annual Return 2015 rr_AnnualReturn2015 0.01% [34]
Annual Return 2016 rr_AnnualReturn2016 0.23% [34]
Annual Return 2017 rr_AnnualReturn2017 0.75% [34]
Annual Return 2018 rr_AnnualReturn2018 1.70% [34]
Annual Return 2019 rr_AnnualReturn2019 2.08% [34]
Annual Return 2020 rr_AnnualReturn2020 0.37% [34]
Annual Return 2021 rr_AnnualReturn2021 0.02% [34]
Annual Return 2022 rr_AnnualReturn2022 1.48% [34]
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Best Quarter: Quarter ended December 31, 2022 0.86%
Worst Quarter: Quarter ended December 31, 2021* 0.00%

*   Most recent quarter with this return during the period of the chart.
Year to Date Return, Label rr_YearToDateReturnLabel Total return for the period 1/1/2023 through 9/30/2023
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2023
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 3.61%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2022
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 0.86%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2021 [35]
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn none
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS AS OF 12/31/22
1 Year rr_AverageAnnualReturnYear01 1.48% [36]
5 Years rr_AverageAnnualReturnYear05 1.13% [36]
10 Years rr_AverageAnnualReturnYear10 0.66% [36]
Inception Date rr_AverageAnnualReturnInceptionDate Dec. 01, 2003 [36]
Government Obligations Fund | Class Z Shares | Risk Lose Money [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock You could lose money by investing in the fund.
Government Obligations Fund | Class Z Shares | Credit Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Credit Risk — The value of your investment might decline if the issuer of an obligation held by the fund defaults on the obligation or has its credit rating downgraded.

Government Obligations Fund | Class Z Shares | Interest Rate Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Interest Rate Risk — The value of your investment might decline because of a sharp rise in interest rates that causes the value of the fund’s portfolio holdings to fall. During periods when interest rates are low or there are negative interest rates, the fund’s yield (and total return) also may be low or the fund may be unable to maintain positive returns.

Government Obligations Fund | Class Z Shares | Market Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Market Risk — Market volatility, dramatic changes to interest rates, and otherwise unfavorable economic conditions resulting from major cybersecurity events, geopolitical events (including wars, such as Russia’s invasion of Ukraine, tensions in the Middle East, terror attacks, and disruptions to foreign economic and trade relationships), public health emergencies, among other events, may negatively impact the fund’s performance or impair the fund’s ability to achieve its investment objective.

Government Obligations Fund | Class Z Shares | Liquidity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Liquidity Risk — The fund may not be able to sell a security in a timely manner or at a desired price, or may be unable to sell the security at all, because of a lack of demand in the market for the security.

Government Obligations Fund | Class Z Shares | Redemption Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Redemption Risk — If there are unexpectedly high redemptions of fund shares, the fund might have to sell portfolio securities prior to their maturity, possibly at a loss.

Government Obligations Fund | Class Z Shares | Repurchase Agreement Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Repurchase Agreement Risk — If the seller of a repurchase agreement defaults on its obligation to repurchase securities from the fund, the fund may incur costs in disposing of the collateral and may experience losses if there is any delay in its ability to do so.

Government Obligations Fund | Class Z Shares | Income Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Income Risk — The level of income you receive from the fund will be affected by movements in short-term interest rates. 

Government Obligations Fund | Class Z Shares | Cybersecurity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Cybersecurity Risk — The fund may be subject to operational and informational security risks resulting from breaches in cybersecurity at the fund, the fund’s affiliates or service providers. A cybersecurity breach at an issuer of securities in which the fund invests may cause such securities to lose value.

Government Obligations Fund | Class Z Shares | Regulatory Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Regulatory Risk — Changes to monetary policy by the Federal Reserve or other regulatory actions may impact the fund’s operations, universe of potential investment options, and return potential.

Retail Prime Obligations Fund | Class A Shares  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol FAPXX
Risk/Return [Heading] rr_RiskReturnHeading Retail Prime Obligations Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Retail Prime Obligations Fund’s objective is to seek maximum current income to the extent consistent with the preservation of capital and maintenance of liquidity.

Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following tables describe the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Maximum Cumulative Sales Charge (as a percentage of Offering Price) rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Shareholder Fee, Other rr_ShareholderFeeOther $ 15
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.10%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Component1 Other Expenses rr_Component1OtherExpensesOverAssets 0.25%
Component2 Other Expenses rr_Component2OtherExpensesOverAssets 0.17%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.77%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.02%) [37]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.75% [37]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2024
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

Example: This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and the fund’s operating expenses remain the same (except that the example incorporates the fund’s expense limitation arrangements for only the first year of each period presented). You would incur these hypothetical expenses whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 77
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 244
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 426
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 952
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Retail Prime Obligations Fund invests in high-quality short-term debt obligations, including:

 

●commercial paper;

●U.S. dollar-denominated obligations of domestic and foreign banks with total assets of at least $500 million (including fixed and variable rate certificates of deposit, time deposits, and bankers’ acceptances);

●non-convertible corporate debt securities;

●securities issued by the U.S. government or one of its agencies or instrumentalities;

●municipal securities, including variable rate demand notes, commercial paper, and municipal notes and other short-term municipal obligations;

●loan participation interests; and

●repurchase agreements.

 

The fund concentrates its investments in the banking industry. Therefore, under normal market conditions, the fund will invest more than 25% of its total assets in obligations issued by companies in the banking industry. The fund may, however, invest 25% or less of its total assets in this industry as a temporary defensive measure.

 

The adviser will only purchase (and hold) securities that it determines present minimal credit risk. If a security is no longer determined to present minimal credit risk, the adviser will make every attempt to sell the security, unless it has determined that it would not be in the best interest of the fund to dispose of the security at that time and, where necessary, has obtained the approval of the fund’s board of trustees to continue to hold the security.

Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the potential risks of investing in the fund. The fund’s past performance is not necessarily an indication of how the fund will perform in the future. Updated performance information is available online at www.firstamericanfunds.com or by calling 800 677-3863.

 

The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.

 

The performance shown in the bar chart and performance table is the performance of the fund’s predecessor entity, Retail Prime Obligations Fund, a series of First American Funds, Inc. (the “Predecessor Fund”), prior to the commencement of the fund’s operations. On December 22, 2023 the fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, the fund adopted the performance and financial history of the Predecessor Fund. The fund has the same investment objective, strategy, risks and investment adviser as the Predecessor Fund. As a result, the performance of the fund would have been substantially similar to that of the Predecessor Fund.

 

The bar chart shows the performance of the Predecessor Fund’s Class A shares which was adopted by the Class A shares of the fund for periods prior to the Reorganization. If the Predecessor Fund’s investment adviser had not waived or reimbursed certain Predecessor Fund expenses during these periods, the Predecessor Fund’s returns would have been lower.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart shows you the variability of the fund’s performance from year to year.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 677-3863
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.firstamericanfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund’s past performance is not necessarily an indication of how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading ANNUAL TOTAL RETURNS AS OF 12/31 EACH YEAR
Annual Return 2017 rr_AnnualReturn2017 0.46% [38]
Annual Return 2018 rr_AnnualReturn2018 1.41% [38]
Annual Return 2019 rr_AnnualReturn2019 1.84% [38]
Annual Return 2020 rr_AnnualReturn2020 0.28% [38]
Annual Return 2021 rr_AnnualReturn2021 0.01% [38]
Annual Return 2022 rr_AnnualReturn2022 1.23% [38]
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Best Quarter: Quarter ended December 31, 2022 0.78%
     
Worst Quarter: Quarter ended March 31, 2022* 0.00%
     
*   Most recent quarter with this return during the period of the chart.
Year to Date Return, Label rr_YearToDateReturnLabel Total return for the period 1/1/2023 through 9/30/2023
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2023
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 3.32%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2022
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 0.78%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2022 [39]
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn none
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS AS OF 12/31/22
1 Year rr_AverageAnnualReturnYear01 1.23% [40]
5 Years rr_AverageAnnualReturnYear05 0.95% [40]
10 Years rr_AverageAnnualReturnYear10 0.81% [40]
Inception Date rr_AverageAnnualReturnInceptionDate Jul. 18, 2016 [40]
Retail Prime Obligations Fund | Class A Shares | Risk Lose Money [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock You could lose money by investing in the fund.
Retail Prime Obligations Fund | Class A Shares | Credit Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Credit Risk — The value of your investment might decline if the issuer of an obligation held by the fund defaults on the obligation or has its credit rating downgraded.

Retail Prime Obligations Fund | Class A Shares | Interest Rate Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Interest Rate Risk — The value of your investment might decline because of a sharp rise in interest rates that causes the value of the fund’s portfolio holdings to fall. During periods when interest rates are low or there are negative interest rates, the fund’s yield (and total return) also may be low or the fund may be unable to maintain positive returns.

Retail Prime Obligations Fund | Class A Shares | Market Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Market Risk — Market volatility, dramatic changes to interest rates, and otherwise unfavorable economic conditions resulting from major cybersecurity events, geopolitical events (including wars, such as Russia’s invasion of Ukraine, tensions in the Middle East, terror attacks, and disruptions to foreign economic and trade relationships), public health emergencies, among other events, may negatively impact the fund’s performance or impair the fund’s ability to achieve its investment objective.

 

Retail Prime Obligations Fund | Class A Shares | Liquidity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Liquidity Risk — The fund may not be able to sell a security in a timely manner or at a desired price, or may be unable to sell the security at all, because of a lack of demand in the market for the security, or a liquidity provider defaults on its obligation to purchase the security when properly tendered by the fund.

Retail Prime Obligations Fund | Class A Shares | Redemption Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Redemption Risk — If there are unexpectedly high redemptions of fund shares, the fund might have to sell portfolio securities prior to their maturity, possibly at a loss.

Retail Prime Obligations Fund | Class A Shares | Repurchase Agreement Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Repurchase Agreement Risk — If the seller of a repurchase agreement defaults on its obligation to repurchase securities from the fund, the fund may incur costs in disposing of the securities purchased and may experience losses if the proceeds from the sale of the securities are less than the full repurchase price.

Retail Prime Obligations Fund | Class A Shares | Income Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Income Risk — The level of income you receive from the fund will be affected by movements in short-term interest rates.

Retail Prime Obligations Fund | Class A Shares | Cybersecurity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Cybersecurity Risk — The fund may be subject to operational and informational security risks resulting from breaches in cybersecurity at the fund, the fund’s affiliates or service providers. A cybersecurity breach at an issuer of securities in which the fund invests may cause such securities to lose value.

Retail Prime Obligations Fund | Class A Shares | Regulatory Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Regulatory Risk — Changes to monetary policy by the Federal Reserve or other regulatory actions may impact the fund’s operations, universe of potential investment options, and return potential.

Retail Prime Obligations Fund | Class A Shares | Banking Industry Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Banking Industry Risk — An adverse development in the banking industry (domestic or foreign) may affect the value of the fund’s investments more than if the fund were not invested to such a degree in the banking industry. Banks may be particularly susceptible to certain economic factors such as interest rate changes, adverse developments in the real estate market, fiscal, regulatory and monetary policy and general economic cycles.

Retail Prime Obligations Fund | Class A Shares | Foreign Security Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Foreign Security Risk — Securities of foreign issuers, even when dollar denominated and publicly traded in the United States, may involve risks not associated with the securities of domestic issuers. Uncertainty surrounding the sovereign debt of several European Union countries, as well as the continued existence of the European Union itself, has disrupted and may continue to disrupt markets in the United States and around the world. If a country changes its currency or leaves the European Union or if the European Union dissolves, the world’s securities markets likely will be significantly disrupted.

Retail Prime Obligations Fund | Class A Shares | Variable Rate Demand Note V R D N Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Variable Rate Demand Note (VRDN) Risk — Investments in VRDNs involve credit risk with respect to the issuer or financial institution providing the fund with the credit and liquidity support for the unconditional put option. While the fund invests only in VRDNs of high quality issuers, or which are supported by high quality financial institutions, it is still possible that an issuer or financial institution could default on its obligations.

Retail Prime Obligations Fund | Class A Shares | Municipal Security Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Municipal Security Risk — The value of municipal securities owned by the fund may be adversely affected by future changes in federal income tax laws, including rate reductions or the imposition of a flat tax, and adverse changes in the financial conditions of municipal securities issuers.

Retail Prime Obligations Fund | Class T Shares  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol FEIXX
Risk/Return [Heading] rr_RiskReturnHeading Retail Prime Obligations Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Retail Prime Obligations Fund’s objective is to seek maximum current income to the extent consistent with the preservation of capital and maintenance of liquidity.

Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following tables describe the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Maximum Cumulative Sales Charge (as a percentage of Offering Price) rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.10%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Component1 Other Expenses rr_Component1OtherExpensesOverAssets 0.20%
Component2 Other Expenses rr_Component2OtherExpensesOverAssets 0.12%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.42%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.02%) [41]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.40% [41]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2024
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

Example: This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and the fund’s operating expenses remain the same (except that the example incorporates the fund’s expense limitation arrangements for only the first year of each period presented). You would incur these hypothetical expenses whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 41
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 133
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 233
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 528
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Retail Prime Obligations Fund invests in high-quality short-term debt obligations, including:

 

●commercial paper;

●U.S. dollar-denominated obligations of domestic and foreign banks with total assets of at least $500 million (including fixed and variable rate certificates of deposit, time deposits, and bankers’ acceptances);

●non-convertible corporate debt securities;

●securities issued by the U.S. government or one of its agencies or instrumentalities;

●municipal securities, including variable rate demand notes, commercial paper, and municipal notes and other short-term municipal obligations;

●loan participation interests; and

●repurchase agreements.

 

The fund concentrates its investments in the banking industry. Therefore, under normal market conditions, the fund will invest more than 25% of its total assets in obligations issued by companies in the banking industry. The fund may, however, invest 25% or less of its total assets in this industry as a temporary defensive measure.

 

The adviser will only purchase (and hold) securities that it determines present minimal credit risk. If a security is no longer determined to present minimal credit risk, the adviser will make every attempt to sell the security, unless it has determined that it would not be in the best interest of the fund to dispose of the security at that time and, where necessary, has obtained the approval of the fund’s board of trustees to continue to hold the security.

Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the potential risks of investing in the fund. The fund’s past performance is not necessarily an indication of how the fund will perform in the future. Updated performance information is available online at www.firstamericanfunds.com or by calling 800 677-3863.

 

The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.

 

The performance shown in the bar chart and performance table is the performance of the fund’s predecessor entity, Retail Prime Obligations Fund, a series of First American Funds, Inc. (the “Predecessor Fund”), prior to the commencement of the fund’s operations. On December 22, 2023 the fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, the fund adopted the performance and financial history of the Predecessor Fund. The fund has the same investment objective, strategy, risks and investment adviser as the Predecessor Fund. As a result, the performance of the fund would have been substantially similar to that of the Predecessor Fund.

 

The bar chart shows the performance of the Predecessor Fund’s Class T shares which was adopted by the Class T shares of the fund for periods prior to the Reorganization. If the Predecessor Fund’s investment adviser had not waived or reimbursed certain Predecessor Fund expenses during these periods, the Predecessor Fund’s returns would have been lower.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart shows you the variability of the fund’s performance from year to year.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 677-3863
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.firstamericanfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund’s past performance is not necessarily an indication of how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading ANNUAL TOTAL RETURNS AS OF 12/31 EACH YEAR
Annual Return 2017 rr_AnnualReturn2017 0.81% [42]
Annual Return 2018 rr_AnnualReturn2018 1.73% [42]
Annual Return 2019 rr_AnnualReturn2019 2.01% [42]
Annual Return 2020 rr_AnnualReturn2020 0.36% [42]
Annual Return 2021 rr_AnnualReturn2021 0.01% [42]
Annual Return 2022 rr_AnnualReturn2022 1.47% [42]
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Best Quarter: Quarter ended December 31, 2022 0.87%
Worst Quarter: Quarter ended March 31, 2022* 0.00%

*   Most recent quarter with this return during the period of the chart.
Year to Date Return, Label rr_YearToDateReturnLabel Total return for the period 1/1/2023 through 9/30/2023
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2023
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 3.59%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2022
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 0.87%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2022 [43]
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn none
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS AS OF 12/31/22
1 Year rr_AverageAnnualReturnYear01 1.47% [44]
5 Years rr_AverageAnnualReturnYear05 1.11% [44]
Since Inception rr_AverageAnnualReturnSinceInception 1.01% [44]
Inception Date rr_AverageAnnualReturnInceptionDate Jul. 18, 2016 [44]
Retail Prime Obligations Fund | Class T Shares | Risk Lose Money [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock You could lose money by investing in the fund.
Retail Prime Obligations Fund | Class T Shares | Credit Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Credit Risk — The value of your investment might decline if the issuer of an obligation held by the fund defaults on the obligation or has its credit rating downgraded.

Retail Prime Obligations Fund | Class T Shares | Interest Rate Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Interest Rate Risk — The value of your investment might decline because of a sharp rise in interest rates that causes the value of the fund’s portfolio holdings to fall. During periods when interest rates are low or there are negative interest rates, the fund’s yield (and total return) also may be low or the fund may be unable to maintain positive returns.

Retail Prime Obligations Fund | Class T Shares | Market Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Market Risk — Market volatility, dramatic changes to interest rates, and otherwise unfavorable economic conditions resulting from major cybersecurity events, geopolitical events (including wars, such as Russia’s invasion of Ukraine, tensions in the Middle East, terror attacks, and disruptions to foreign economic and trade relationships), public health emergencies, among other events, may negatively impact the fund’s performance or impair the fund’s ability to achieve its investment objective.

Retail Prime Obligations Fund | Class T Shares | Liquidity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Liquidity Risk — The fund may not be able to sell a security in a timely manner or at a desired price, or may be unable to sell the security at all, because of a lack of demand in the market for the security, or a liquidity provider defaults on its obligation to purchase the security when properly tendered by the fund.

Retail Prime Obligations Fund | Class T Shares | Redemption Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Redemption Risk — If there are unexpectedly high redemptions of fund shares, the fund might have to sell portfolio securities prior to their maturity, possibly at a loss.

Retail Prime Obligations Fund | Class T Shares | Repurchase Agreement Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Repurchase Agreement Risk — If the seller of a repurchase agreement defaults on its obligation to repurchase securities from the fund, the fund may incur costs in disposing of the securities purchased and may experience losses if the proceeds from the sale of the securities are less than the full repurchase price.

Retail Prime Obligations Fund | Class T Shares | Income Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Income Risk — The level of income you receive from the fund will be affected by movements in short-term interest rates.

Retail Prime Obligations Fund | Class T Shares | Cybersecurity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Cybersecurity Risk — The fund may be subject to operational and informational security risks resulting from breaches in cybersecurity at the fund, the fund’s affiliates or service providers. A cybersecurity breach at an issuer of securities in which the fund invests may cause such securities to lose value. 

Retail Prime Obligations Fund | Class T Shares | Regulatory Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Regulatory Risk — Changes to monetary policy by the Federal Reserve or other regulatory actions may impact the fund’s operations, universe of potential investment options, and return potential.

Retail Prime Obligations Fund | Class T Shares | Banking Industry Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Banking Industry Risk — An adverse development in the banking industry (domestic or foreign) may affect the value of the fund’s investments more than if the fund were not invested to such a degree in the banking industry. Banks may be particularly susceptible to certain economic factors such as interest rate changes, adverse developments in the real estate market, fiscal, regulatory and monetary policy and general economic cycles.

Retail Prime Obligations Fund | Class T Shares | Foreign Security Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Foreign Security Risk — Securities of foreign issuers, even when dollar denominated and publicly traded in the United States, may involve risks not associated with the securities of domestic issuers. Uncertainty surrounding the sovereign debt of several European Union countries, as well as the continued existence of the European Union itself, has disrupted and may continue to disrupt markets in the United States and around the world. If a country changes its currency or leaves the European Union or if the European Union dissolves, the world’s securities markets likely will be significantly disrupted.

Retail Prime Obligations Fund | Class T Shares | Variable Rate Demand Note V R D N Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Variable Rate Demand Note (VRDN) Risk — Investments in VRDNs involve credit risk with respect to the issuer or financial institution providing the fund with the credit and liquidity support for the unconditional put option.

Retail Prime Obligations Fund | Class T Shares | Municipal Security Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Municipal Security Risk — The value of municipal securities owned by the fund may be adversely affected by future changes in federal income tax laws, including rate reductions or the imposition of a flat tax, and adverse changes in the financial conditions of municipal securities issuers.

Retail Prime Obligations Fund | Class V Shares  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol FPUXX
Risk/Return [Heading] rr_RiskReturnHeading Retail Prime Obligations Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Retail Prime Obligations Fund’s objective is to seek maximum current income to the extent consistent with the preservation of capital and maintenance of liquidity.

Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following tables describe the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Maximum Cumulative Sales Charge (as a percentage of Offering Price) rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.10%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Component1 Other Expenses rr_Component1OtherExpensesOverAssets 0.10%
Component2 Other Expenses rr_Component2OtherExpensesOverAssets 0.12%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.32%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.02%) [45]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.30% [45]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2024
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

Example: This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and the fund’s operating expenses remain the same (except that the example incorporates the fund’s expense limitation arrangements for only the first year of each period presented). You would incur these hypothetical expenses whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 31
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 101
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 178
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 404
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Retail Prime Obligations Fund invests in high-quality short-term debt obligations, including:

 

●commercial paper;

●U.S. dollar-denominated obligations of domestic and foreign banks with total assets of at least $500 million (including fixed and variable rate certificates of deposit, time deposits, and bankers’ acceptances);

●non-convertible corporate debt securities;

●securities issued by the U.S. government or one of its agencies or instrumentalities;

●municipal securities, including variable rate demand notes, commercial paper, and municipal notes and other short-term municipal obligations;

●loan participation interests; and

●repurchase agreements.

 

The fund concentrates its investments in the banking industry. Therefore, under normal market conditions, the fund will invest more than 25% of its total assets in obligations issued by companies in the banking industry. The fund may, however, invest 25% or less of its total assets in this industry as a temporary defensive measure.

 

The adviser will only purchase (and hold) securities that it determines present minimal credit risk. If a security is no longer determined to present minimal credit risk, the adviser will make every attempt to sell the security, unless it has determined that it would not be in the best interest of the fund to dispose of the security at that time and, where necessary, has obtained the approval of the fund’s board of trustees to continue to hold the security.

Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the potential risks of investing in the fund. The fund’s past performance is not necessarily an indication of how the fund will perform in the future. Updated performance information is available online at www.firstamericanfunds.com or by calling 800 677-3863.

 

The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.

 

The performance shown in the bar chart and performance table is the performance of the fund’s predecessor entity, Retail Prime Obligations Fund, a series of First American Funds, Inc. (the “Predecessor Fund”), prior to the commencement of the fund’s operations. On December 22, 2023 the fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, the fund adopted the performance and financial history of the Predecessor Fund. The fund has the same investment objective, strategy, risks and investment adviser as the Predecessor Fund. As a result, the performance of the fund would have been substantially similar to that of the Predecessor Fund.

 

The bar chart shows the performance of the Predecessor Fund’s Class V shares which was adopted by the Class V shares of the fund for periods prior to the Reorganization. If the Predecessor Fund’s investment adviser had not waived or reimbursed certain Predecessor Fund expenses during these periods, the Predecessor Fund’s returns would have been lower.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart shows you the variability of the fund’s performance from year to year.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 677-3863
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.firstamericanfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund’s past performance is not necessarily an indication of how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading ANNUAL TOTAL RETURNS AS OF 12/31 EACH YEAR
Annual Return 2017 rr_AnnualReturn2017 0.91% [46]
Annual Return 2018 rr_AnnualReturn2018 1.83% [46]
Annual Return 2019 rr_AnnualReturn2019 2.12% [46]
Annual Return 2020 rr_AnnualReturn2020 0.42% [46]
Annual Return 2021 rr_AnnualReturn2021 0.01% [46]
Annual Return 2022 rr_AnnualReturn2022 1.55% [46]
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Best Quarter: Quarter ended December 31, 2022 0.89%
Worst Quarter: Quarter ended December 31, 2021* 0.00%
* Most recent quarter with this return during the period of the chart.
Year to Date Return, Label rr_YearToDateReturnLabel Total return for the period 1/1/2023 through 9/30/2023
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2023
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 3.66%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2022
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 0.89%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2021 [47]
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn none
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS AS OF 12/31/22
1 Year rr_AverageAnnualReturnYear01 1.55% [48]
5 Years rr_AverageAnnualReturnYear05 1.18% [48]
Since Inception rr_AverageAnnualReturnSinceInception 1.09% [48]
Inception Date rr_AverageAnnualReturnInceptionDate Jul. 18, 2016 [48]
Retail Prime Obligations Fund | Class V Shares | Risk Lose Money [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock You could lose money by investing in the fund.
Retail Prime Obligations Fund | Class V Shares | Credit Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Credit Risk — The value of your investment might decline if the issuer of an obligation held by the fund defaults on the obligation or has its credit rating downgraded.

Retail Prime Obligations Fund | Class V Shares | Interest Rate Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Interest Rate Risk — The value of your investment might decline because of a sharp rise in interest rates that causes the value of the fund’s portfolio holdings to fall. During periods when interest rates are low or there are negative interest rates, the fund’s yield (and total return) also may be low or the fund may be unable to maintain positive returns.

Retail Prime Obligations Fund | Class V Shares | Market Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Market Risk — Market volatility, dramatic changes to interest rates, and otherwise unfavorable economic conditions resulting from major cybersecurity events, geopolitical events (including wars, such as Russia’s invasion of Ukraine, tensions in the Middle East, terror attacks, and disruptions to foreign economic and trade relationships), public health emergencies, among other events, may negatively impact the fund’s performance or impair the fund’s ability to achieve its investment objective.

Retail Prime Obligations Fund | Class V Shares | Liquidity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Liquidity Risk — The fund may not be able to sell a security in a timely manner or at a desired price, or may be unable to sell the security at all, because of a lack of demand in the market for the security, or a liquidity provider defaults on its obligation to purchase the security when properly tendered by the fund.

Retail Prime Obligations Fund | Class V Shares | Redemption Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Redemption Risk — If there are unexpectedly high redemptions of fund shares, the fund might have to sell portfolio securities prior to their maturity, possibly at a loss.

Retail Prime Obligations Fund | Class V Shares | Repurchase Agreement Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Repurchase Agreement Risk — If the seller of a repurchase agreement defaults on its obligation to repurchase securities from the fund, the fund may incur costs in disposing of the securities purchased and may experience losses if the proceeds from the sale of the securities are less than the full repurchase price.

Retail Prime Obligations Fund | Class V Shares | Income Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Income Risk — The level of income you receive from the fund will be affected by movements in short-term interest rates.

Retail Prime Obligations Fund | Class V Shares | Cybersecurity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Cybersecurity Risk — The fund may be subject to operational and informational security risks resulting from breaches in cybersecurity at the fund, the fund’s affiliates or service providers. A cybersecurity breach at an issuer of securities in which the fund invests may cause such securities to lose value. 

Retail Prime Obligations Fund | Class V Shares | Regulatory Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Regulatory Risk — Changes to monetary policy by the Federal Reserve or other regulatory actions may impact the fund’s operations, universe of potential investment options, and return potential.

Retail Prime Obligations Fund | Class V Shares | Banking Industry Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Banking Industry Risk — An adverse development in the banking industry (domestic or foreign) may affect the value of the fund’s investments more than if the fund were not invested to such a degree in the banking industry. Banks may be particularly susceptible to certain economic factors such as interest rate changes, adverse developments in the real estate market, fiscal, regulatory and monetary policy and general economic cycles.

Retail Prime Obligations Fund | Class V Shares | Foreign Security Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Foreign Security Risk — Securities of foreign issuers, even when dollar denominated and publicly traded in the United States, may involve risks not associated with the securities of domestic issuers. Uncertainty surrounding the sovereign debt of several European Union countries, as well as the continued existence of the European Union itself, has disrupted and may continue to disrupt markets in the United States and around the world. If a country changes its currency or leaves the European Union or if the European Union dissolves, the world’s securities markets likely will be significantly disrupted.

Retail Prime Obligations Fund | Class V Shares | Variable Rate Demand Note V R D N Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Variable Rate Demand Note (VRDN) Risk — Investments in VRDNs involve credit risk with respect to the issuer or financial institution providing the fund with the credit and liquidity support for the unconditional put option.

Retail Prime Obligations Fund | Class V Shares | Municipal Security Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Municipal Security Risk — The value of municipal securities owned by the fund may be adversely affected by future changes in federal income tax laws, including rate reductions or the imposition of a flat tax, and adverse changes in the financial conditions of municipal securities issuers.

Retail Prime Obligations Fund | Class X Shares  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol FXRXX
Risk/Return [Heading] rr_RiskReturnHeading Retail Prime Obligations Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Retail Prime Obligations Fund’s objective is to seek maximum current income to the extent consistent with the preservation of capital and maintenance of liquidity.

Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following tables describe the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Maximum Cumulative Sales Charge (as a percentage of Offering Price) rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.10%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets 0.12%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.22%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.08%) [49]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.14% [49]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2024
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

Example: This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and the fund’s operating expenses remain the same (except that the example incorporates the fund’s expense limitation arrangements for only the first year of each period presented). You would incur these hypothetical expenses whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 14
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 63
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 116
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 272
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Retail Prime Obligations Fund invests in high-quality short-term debt obligations, including:

 

●commercial paper;
●U.S. dollar-denominated obligations of domestic and foreign banks with total assets of at least $500 million (including fixed and variable rate certificates of deposit, time deposits, and bankers’ acceptances);
●non-convertible corporate debt securities;
●securities issued by the U.S. government or one of its agencies or instrumentalities;
●municipal securities, including variable rate demand notes, commercial paper, and municipal notes and other short-term municipal obligations;
●loan participation interests; and
●repurchase agreements.

 

The fund concentrates its investments in the banking industry. Therefore, under normal market conditions, the fund will invest more than 25% of its total assets in obligations issued by companies in the banking industry. The fund may, however, invest 25% or less of its total assets in this industry as a temporary defensive measure.

 

The adviser will only purchase (and hold) securities that it determines present minimal credit risk. If a security is no longer determined to present minimal credit risk, the adviser will make every attempt to sell the security, unless it has determined that it would not be in the best interest of the fund to dispose of the security at that time and, where necessary, has obtained the approval of the fund’s board of trustees to continue to hold the security.

Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the potential risks of investing in the fund. The fund’s past performance is not necessarily an indication of how the fund will perform in the future. Updated performance information is available online at www.firstamericanfunds.com or by calling 800 677-3863.

 

The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.

 

The performance shown in the bar chart and performance table is the performance of the fund’s predecessor entity, Retail Prime Obligations Fund, a series of First American Funds, Inc. (the “Predecessor Fund”), prior to the commencement of the fund’s operations. On December 22, 2023 the fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, the fund adopted the performance and financial history of the Predecessor Fund. The fund has the same investment objective, strategy, risks and investment adviser as the Predecessor Fund. As a result, the performance of the fund would have been substantially similar to that of the Predecessor Fund.

 

The bar chart shows the performance of the Predecessor Fund’s Class X shares which was adopted by the Class X shares of the fund for periods prior to the Reorganization. If the Predecessor Fund’s investment adviser had not waived or reimbursed certain Predecessor Fund expenses during these periods, the Predecessor Fund’s returns would have been lower.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 677-3863
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.firstamericanfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund’s past performance is not necessarily an indication of how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading ANNUAL TOTAL RETURNS AS OF 12/31 EACH YEAR
Annual Return 2017 rr_AnnualReturn2017 1.07% [50]
Annual Return 2018 rr_AnnualReturn2018 1.99% [50]
Annual Return 2019 rr_AnnualReturn2019 2.28% [50]
Annual Return 2020 rr_AnnualReturn2020 0.55% [50]
Annual Return 2021 rr_AnnualReturn2021 0.02% [50]
Annual Return 2022 rr_AnnualReturn2022 1.68% [50]
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Best Quarter: Quarter ended December 31, 2022 0.93%
Worst Quarter: Quarter ended December 31, 2021* 0.00%

*   Most recent quarter with this return during the period of the chart.

Year to Date Return, Label rr_YearToDateReturnLabel Total return for the period 1/1/2023 through 9/30/2023
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2023
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 3.79%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2022
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 0.93%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2021 [51]
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn none
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS AS OF 12/31/22
1 Year rr_AverageAnnualReturnYear01 1.68% [52]
5 Years rr_AverageAnnualReturnYear05 1.30% [52]
10 Years rr_AverageAnnualReturnYear10 1.23% [52]
Inception Date rr_AverageAnnualReturnInceptionDate Sep. 18, 2016 [52]
Retail Prime Obligations Fund | Class X Shares | Risk Lose Money [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock You could lose money by investing in the fund.
Retail Prime Obligations Fund | Class X Shares | Credit Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Credit Risk — The value of your investment might decline if the issuer of an obligation held by the fund defaults on the obligation or has its credit rating downgraded.

Retail Prime Obligations Fund | Class X Shares | Interest Rate Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Interest Rate Risk — The value of your investment might decline because of a sharp rise in interest rates that causes the value of the fund’s portfolio holdings to fall. During periods when interest rates are low or there are negative interest rates, the fund’s yield (and total return) also may be low or the fund may be unable to maintain positive returns.

Retail Prime Obligations Fund | Class X Shares | Market Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Market Risk — Market volatility, dramatic changes to interest rates, and otherwise unfavorable economic conditions resulting from major cybersecurity events, geopolitical events (including wars, such as Russia’s invasion of Ukraine, tensions in the Middle East, terror attacks, and disruptions to foreign economic and trade relationships), public health emergencies, among other events, may negatively impact the fund’s performance or impair the fund’s ability to achieve its investment objective.

Retail Prime Obligations Fund | Class X Shares | Liquidity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Liquidity Risk — The fund may not be able to sell a security in a timely manner or at a desired price, or may be unable to sell the security at all, because of a lack of demand in the market for the security, or a liquidity provider defaults on its obligation to purchase the security when properly tendered by the fund.

Retail Prime Obligations Fund | Class X Shares | Redemption Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Redemption Risk — If there are unexpectedly high redemptions of fund shares, the fund might have to sell portfolio securities prior to their maturity, possibly at a loss.

Retail Prime Obligations Fund | Class X Shares | Repurchase Agreement Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Repurchase Agreement Risk — If the seller of a repurchase agreement defaults on its obligation to repurchase securities from the fund, the fund may incur costs in disposing of the securities purchased and may experience losses if the proceeds from the sale of the securities are less than the full repurchase price.

Retail Prime Obligations Fund | Class X Shares | Income Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Income Risk — The level of income you receive from the fund will be affected by movements in short-term interest rates.

Retail Prime Obligations Fund | Class X Shares | Cybersecurity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Cybersecurity Risk — The fund may be subject to operational and informational security risks resulting from breaches in cybersecurity at the fund, the fund’s affiliates or service providers. A cybersecurity breach at an issuer of securities in which the fund invests may cause such securities to lose value. 

Retail Prime Obligations Fund | Class X Shares | Regulatory Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Regulatory Risk — Changes to monetary policy by the Federal Reserve or other regulatory actions may impact the fund’s operations, universe of potential investment options, and return potential.

Retail Prime Obligations Fund | Class X Shares | Banking Industry Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Banking Industry Risk — An adverse development in the banking industry (domestic or foreign) may affect the value of the fund’s investments more than if the fund were not invested to such a degree in the banking industry. Banks may be particularly susceptible to certain economic factors such as interest rate changes, adverse developments in the real estate market, fiscal, regulatory and monetary policy and general economic cycles.

Retail Prime Obligations Fund | Class X Shares | Foreign Security Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Foreign Security Risk — Securities of foreign issuers, even when dollar denominated and publicly traded in the United States, may involve risks not associated with the securities of domestic issuers. Uncertainty surrounding the sovereign debt of several European Union countries, as well as the continued existence of the European Union itself, has disrupted and may continue to disrupt markets in the United States and around the world. If a country changes its currency or leaves the European Union or if the European Union dissolves, the world’s securities markets likely will be significantly disrupted.

Retail Prime Obligations Fund | Class X Shares | Variable Rate Demand Note V R D N Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Variable Rate Demand Note (VRDN) Risk — Investments in VRDNs involve credit risk with respect to the issuer or financial institution providing the fund with the credit and liquidity support for the unconditional put option.

Retail Prime Obligations Fund | Class X Shares | Municipal Security Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Municipal Security Risk — The value of municipal securities owned by the fund may be adversely affected by future changes in federal income tax laws, including rate reductions or the imposition of a flat tax, and adverse changes in the financial conditions of municipal securities issuers.

Retail Prime Obligations Fund | Class Y Shares  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol FYRXX
Risk/Return [Heading] rr_RiskReturnHeading Retail Prime Obligations Fund continued
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Retail Prime Obligations Fund’s objective is to seek maximum current income to the extent consistent with the preservation of capital and maintenance of liquidity.

Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following tables describe the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Maximum Cumulative Sales Charge (as a percentage of Offering Price) rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.10%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Component1 Other Expenses rr_Component1OtherExpensesOverAssets 0.25%
Component2 Other Expenses rr_Component2OtherExpensesOverAssets 0.12%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.47%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.02%) [53]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.45% [53]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2024
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

Example: This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and the fund’s operating expenses remain the same (except that the example incorporates the fund’s expense limitation arrangements for only the first year of each period presented). You would incur these hypothetical expenses whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 46
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 149
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 261
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 590
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Retail Prime Obligations Fund invests in high-quality short-term debt obligations, including:

 

•commercial paper;

•U.S. dollar-denominated obligations of domestic and foreign banks with total assets of at least $500 million (including fixed and variable rate certificates of deposit, time deposits, and bankers’ acceptances);

•non-convertible corporate debt securities;

•securities issued by the U.S. government or one of its agencies or instrumentalities;

•municipal securities, including variable rate demand notes, commercial paper, and municipal notes and other short-term municipal obligations;

•loan participation interests; and

•repurchase agreements.

 

The fund concentrates its investments in the banking industry. Therefore, under normal market conditions, the fund will invest more than 25% of its total assets in obligations issued by companies in the banking industry. The fund may, however, invest 25% or less of its total assets in this industry as a temporary defensive measure.

 

The adviser will only purchase (and hold) securities that it determines present minimal credit risk. If a security is no longer determined to present minimal credit risk, the adviser will make every attempt to sell the security, unless it has determined that it would not be in the best interest of the fund to dispose of the security at that time and, where necessary, has obtained the approval of the fund’s board of trustees to continue to hold the security.

Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the potential risks of investing in the fund. The fund’s past performance is not necessarily an indication of how the fund will perform in the future. Updated performance information is available online at www.firstamericanfunds.com or by calling 800 677-3863.

 

The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.

 

The performance shown in the bar chart and performance table is the performance of the fund’s predecessor entity, Retail Prime Obligations Fund, a series of First American Funds, Inc. (the “Predecessor Fund”), prior to the commencement of the fund’s operations. On December 22, 2023 the fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, the fund adopted the performance and financial history of the Predecessor Fund. The fund has the same investment objective, strategy, risks and investment adviser as the Predecessor Fund. As a result, the performance of the fund would have been substantially similar to that of the Predecessor Fund.

 

The bar chart shows the performance of the Predecessor Fund’s Class Y shares which was adopted by the Class Y shares of the fund for periods prior to the Reorganization. If the Predecessor Fund’s investment adviser had not waived or reimbursed certain Predecessor Fund expenses during these periods, the Predecessor Fund’s returns would have been lower.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 677-3863
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.firstamericanfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund’s past performance is not necessarily an indication of how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading ANNUAL TOTAL RETURNS AS OF 12/31 EACH YEAR
Annual Return 2017 rr_AnnualReturn2017 0.76% [54]
Annual Return 2018 rr_AnnualReturn2018 1.67% [54]
Annual Return 2019 rr_AnnualReturn2019 1.96% [54]
Annual Return 2020 rr_AnnualReturn2020 0.34% [54]
Annual Return 2021 rr_AnnualReturn2021 0.01% [54]
Annual Return 2022 rr_AnnualReturn2022 1.43% [54]
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Best Quarter: Quarter ended December 31, 2022 0.86%
     
Worst Quarter: Quarter ended March 31, 2022* 0.00%
     
* Most recent quarter with this return during the period of the chart.
Year to Date Return, Label rr_YearToDateReturnLabel Total return for the period 1/1/2023 through 9/30/2023
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2023
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 3.55%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2022
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 0.86%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2022 [55]
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn none
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS AS OF 12/31/22
1 Year rr_AverageAnnualReturnYear01 1.43% [56]
5 Years rr_AverageAnnualReturnYear05 1.08% [56]
Since Inception rr_AverageAnnualReturnSinceInception 0.97% [56]
Inception Date rr_AverageAnnualReturnInceptionDate Jul. 18, 2016 [56]
Retail Prime Obligations Fund | Class Y Shares | Risk Lose Money [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock You could lose money by investing in the fund.
Retail Prime Obligations Fund | Class Y Shares | Credit Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Credit Risk — The value of your investment might decline if the issuer of an obligation held by the fund defaults on the obligation or has its credit rating downgraded.

Retail Prime Obligations Fund | Class Y Shares | Interest Rate Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Interest Rate Risk — The value of your investment might decline because of a sharp rise in interest rates that causes the value of the fund’s portfolio holdings to fall. During periods when interest rates are low or there are negative interest rates, the fund’s yield (and total return) also may be low or the fund may be unable to maintain positive returns.

Retail Prime Obligations Fund | Class Y Shares | Market Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Market Risk — Market volatility, dramatic changes to interest rates, and otherwise unfavorable economic conditions resulting from major cybersecurity events, geopolitical events (including wars, such as Russia’s invasion of Ukraine, tensions in the Middle East, terror attacks, and disruptions to foreign economic and trade relationships), public health emergencies, among other events, may negatively impact the fund’s performance or impair the fund’s ability to achieve its investment objective.

Retail Prime Obligations Fund | Class Y Shares | Liquidity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Liquidity Risk — The fund may not be able to sell a security in a timely manner or at a desired price, or may be unable to sell the security at all, because of a lack of demand in the market for the security, or a liquidity provider defaults on its obligation to purchase the security when properly tendered by the fund.

Retail Prime Obligations Fund | Class Y Shares | Redemption Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Redemption Risk — If there are unexpectedly high redemptions of fund shares, the fund might have to sell portfolio securities prior to their maturity, possibly at a loss.

Retail Prime Obligations Fund | Class Y Shares | Repurchase Agreement Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Repurchase Agreement Risk — If the seller of a repurchase agreement defaults on its obligation to repurchase securities from the fund, the fund may incur costs in disposing of the securities purchased and may experience losses if the proceeds from the sale of the securities are less than the full repurchase price.

Retail Prime Obligations Fund | Class Y Shares | Income Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Income Risk — The level of income you receive from the fund will be affected by movements in short-term interest rates.

Retail Prime Obligations Fund | Class Y Shares | Cybersecurity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Cybersecurity Risk — The fund may be subject to operational and informational security risks resulting from breaches in cybersecurity at the fund, the fund’s affiliates or service providers. A cybersecurity breach at an issuer of securities in which the fund invests may cause such securities to lose value.

Retail Prime Obligations Fund | Class Y Shares | Regulatory Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Regulatory Risk — Changes to monetary policy by the Federal Reserve or other regulatory actions may impact the fund’s operations, universe of potential investment options, and return potential.

Retail Prime Obligations Fund | Class Y Shares | Banking Industry Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Banking Industry Risk — An adverse development in the banking industry (domestic or foreign) may affect the value of the fund’s investments more than if the fund were not invested to such a degree in the banking industry. Banks may be particularly susceptible to certain economic factors such as interest rate changes, adverse developments in the real estate market, fiscal, regulatory and monetary policy and general economic cycles.

Retail Prime Obligations Fund | Class Y Shares | Foreign Security Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Foreign Security Risk — Securities of foreign issuers, even when dollar denominated and publicly traded in the United States, may involve risks not associated with the securities of domestic issuers. Uncertainty surrounding the sovereign debt of several European Union countries, as well as the continued existence of the European Union itself, has disrupted and may continue to disrupt markets in the United States and around the world. If a country changes its currency or leaves the European Union or if the European Union dissolves, the world’s securities markets likely will be significantly disrupted.

Retail Prime Obligations Fund | Class Y Shares | Variable Rate Demand Note V R D N Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Variable Rate Demand Note (VRDN) Risk — Investments in VRDNs involve credit risk with respect to the issuer or financial institution providing the fund with the credit and liquidity support for the unconditional put option.

Retail Prime Obligations Fund | Class Y Shares | Municipal Security Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Municipal Security Risk — The value of municipal securities owned by the fund may be adversely affected by future changes in federal income tax laws, including rate reductions or the imposition of a flat tax, and adverse changes in the financial conditions of municipal securities issuers.

Retail Prime Obligations Fund | Class Z Shares  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol FZRXX
Risk/Return [Heading] rr_RiskReturnHeading Retail Prime Obligations Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Retail Prime Obligations Fund’s objective is to seek maximum current income to the extent consistent with the preservation of capital and maintenance of liquidity.

Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following tables describe the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Maximum Cumulative Sales Charge (as a percentage of Offering Price) rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.10%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets 0.12%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.22%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.02%) [57]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.20% [57]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2024
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

Example: This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and the fund’s operating expenses remain the same (except that the example incorporates the fund’s expense limitation arrangements for only the first year of each period presented). You would incur these hypothetical expenses whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 20
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 69
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 122
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 278
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Retail Prime Obligations Fund invests in high-quality short-term debt obligations, including:

 

●commercial paper;

●U.S. dollar-denominated obligations of domestic and foreign banks with total assets of at least $500 million (including fixed and variable rate certificates of deposit, time deposits, and bankers’ acceptances);

●non-convertible corporate debt securities;

●securities issued by the U.S. government or one of its agencies or instrumentalities;

●municipal securities, including variable rate demand notes, commercial paper, and municipal notes and other short-term municipal obligations;

●loan participation interests; and

●repurchase agreements.

 

The fund concentrates its investments in the banking industry. Therefore, under normal market conditions, the fund will invest more than 25% of its total assets in obligations issued by companies in the banking industry. The fund may, however, invest 25% or less of its total assets in this industry as a temporary defensive measure.

 

The adviser will only purchase (and hold) securities that it determines present minimal credit risk. If a security is no longer determined to present minimal credit risk, the adviser will make every attempt to sell the security, unless it has determined that it would not be in the best interest of the fund to dispose of the security at that time and, where necessary, has obtained the approval of the fund’s board of trustees to continue to hold the security.

Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the potential risks of investing in the fund. The fund’s past performance is not necessarily an indication of how the fund will perform in the future. Updated performance information is available online at www.firstamericanfunds.com or by calling 800 677-3863.

 

The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.

 

The performance shown in the bar chart and performance table is the performance of the fund’s predecessor entity, Retail Prime Obligations Fund, a series of First American Funds, Inc. (the “Predecessor Fund”), prior to the commencement of the fund’s operations. On December 22, 2023 the fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, the fund adopted the performance and financial history of the Predecessor Fund. The fund has the same investment objective, strategy, risks and investment adviser as the Predecessor Fund. As a result, the performance of the fund would have been substantially similar to that of the Predecessor Fund.

 

The bar chart shows the performance of the Predecessor Fund’s Class Z shares which was adopted by the Class Z shares of the fund for periods prior to the Reorganization. If the Predecessor Fund’s investment adviser had not waived or reimbursed certain Predecessor Fund expenses during these periods, the Predecessor Fund’s returns would have been lower.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart shows you the variability of the fund’s performance from year to year.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 677-3863
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.firstamericanfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund’s past performance is not necessarily an indication of how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading ANNUAL TOTAL RETURNS AS OF 12/31 EACH YEAR
Annual Return 2017 rr_AnnualReturn2017 1.01% [58]
Annual Return 2018 rr_AnnualReturn2018 1.93% [58]
Annual Return 2019 rr_AnnualReturn2019 2.22% [58]
Annual Return 2020 rr_AnnualReturn2020 0.49% [58]
Annual Return 2021 rr_AnnualReturn2021 1.00% [58]
Annual Return 2022 rr_AnnualReturn2022 1.63% [58]
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Best Quarter: Quarter ended December 31, 2022 0.92%
Worst Quarter: Quarter ended December 31, 2021* 0.00%

*   Most recent quarter with this return during the period of the chart.
Year to Date Return, Label rr_YearToDateReturnLabel Total return for the period 1/1/2023 through 9/30/2023
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2023
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 3.74%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2022
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 0.92%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2021 [59]
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn none
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS AS OF 12/31/22
1 Year rr_AverageAnnualReturnYear01 1.63% [60]
5 Years rr_AverageAnnualReturnYear05 1.25% [60]
10 Years rr_AverageAnnualReturnYear10 1.16% [60]
Inception Date rr_AverageAnnualReturnInceptionDate Jul. 18, 2016 [60]
Retail Prime Obligations Fund | Class Z Shares | Risk Lose Money [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock You could lose money by investing in the fund.
Retail Prime Obligations Fund | Class Z Shares | Credit Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Credit Risk — The value of your investment might decline if the issuer of an obligation held by the fund defaults on the obligation or has its credit rating downgraded.

Retail Prime Obligations Fund | Class Z Shares | Interest Rate Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Interest Rate Risk — The value of your investment might decline because of a sharp rise in interest rates that causes the value of the fund’s portfolio holdings to fall. During periods when interest rates are low or there are negative interest rates, the fund’s yield (and total return) also may be low or the fund may be unable to maintain positive returns.

Retail Prime Obligations Fund | Class Z Shares | Market Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Market Risk — Market volatility, dramatic changes to interest rates, and otherwise unfavorable economic conditions resulting from major cybersecurity events, geopolitical events (including wars, such as Russia’s invasion of Ukraine, tensions in the Middle East, terror attacks, and disruptions to foreign economic and trade relationships), public health emergencies, among other events, may negatively impact the fund’s performance or impair the fund’s ability to achieve its investment objective.

Retail Prime Obligations Fund | Class Z Shares | Liquidity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Liquidity Risk — The fund may not be able to sell a security in a timely manner or at a desired price, or may be unable to sell the security at all, because of a lack of demand in the market for the security, or a liquidity provider defaults on its obligation to purchase the security when properly tendered by the fund.

Retail Prime Obligations Fund | Class Z Shares | Redemption Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Redemption Risk — If there are unexpectedly high redemptions of fund shares, the fund might have to sell portfolio securities prior to their maturity, possibly at a loss.

Retail Prime Obligations Fund | Class Z Shares | Repurchase Agreement Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Repurchase Agreement Risk — If the seller of a repurchase agreement defaults on its obligation to repurchase securities from the fund, the fund may incur costs in disposing of the securities purchased and may experience losses if the proceeds from the sale of the securities are less than the full repurchase price.

Retail Prime Obligations Fund | Class Z Shares | Income Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Income Risk — The level of income you receive from the fund will be affected by movements in short-term interest rates.

Retail Prime Obligations Fund | Class Z Shares | Cybersecurity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Cybersecurity Risk — The fund may be subject to operational and informational security risks resulting from breaches in cybersecurity at the fund, the fund’s affiliates or service providers. A cybersecurity breach at an issuer of securities in which the fund invests may cause such securities to lose value. 

Retail Prime Obligations Fund | Class Z Shares | Regulatory Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Regulatory Risk — Changes to monetary policy by the Federal Reserve or other regulatory actions may impact the fund’s operations, universe of potential investment options, and return potential.

Retail Prime Obligations Fund | Class Z Shares | Banking Industry Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Banking Industry Risk — An adverse development in the banking industry (domestic or foreign) may affect the value of the fund’s investments more than if the fund were not invested to such a degree in the banking industry. Banks may be particularly susceptible to certain economic factors such as interest rate changes, adverse developments in the real estate market, fiscal, regulatory and monetary policy and general economic cycles.

Retail Prime Obligations Fund | Class Z Shares | Foreign Security Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Foreign Security Risk — Securities of foreign issuers, even when dollar denominated and publicly traded in the United States, may involve risks not associated with the securities of domestic issuers. Uncertainty surrounding the sovereign debt of several European Union countries, as well as the continued existence of the European Union itself, has disrupted and may continue to disrupt markets in the United States and around the world. If a country changes its currency or leaves the European Union or if the European Union dissolves, the world’s securities markets likely will be significantly disrupted.

Retail Prime Obligations Fund | Class Z Shares | Variable Rate Demand Note V R D N Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Variable Rate Demand Note (VRDN) Risk — Investments in VRDNs involve credit risk with respect to the issuer or financial institution providing the fund with the credit and liquidity support for the unconditional put option.

Retail Prime Obligations Fund | Class Z Shares | Municipal Security Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Municipal Security Risk — The value of municipal securities owned by the fund may be adversely affected by future changes in federal income tax laws, including rate reductions or the imposition of a flat tax, and adverse changes in the financial conditions of municipal securities issuers.

Retail Tax Free Obligations Fund | Class A Shares  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol FTAXX
Risk/Return [Heading] rr_RiskReturnHeading Retail Tax Free Obligations Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Retail Tax Free Obligations Fund’s objective is to seek maximum current income exempt from federal income taxes consistent with the preservation of capital and maintenance of liquidity.

Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following tables describe the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Maximum Cumulative Sales Charge (as a percentage of Offering Price) rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Shareholder Fee, Other rr_ShareholderFeeOther $ 15
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.10%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Component1 Other Expenses rr_Component1OtherExpensesOverAssets 0.25%
Component2 Other Expenses rr_Component2OtherExpensesOverAssets 0.26%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.86%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.11%) [61]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.75% [61]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2024
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

Example: This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and the fund’s operating expenses remain the same (except that the example incorporates the fund’s expense limitation arrangements for only the first year of each period presented). You would incur these hypothetical expenses whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 77
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 263
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 466
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 1,051
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Under normal market conditions, Retail Tax Free Obligations Fund invests at least 80% of its total assets in high-quality, short-term municipal securities that pay interest that is exempt from federal income tax, including the federal alternative minimum tax. The municipal securities in which the fund invests include variable rate demand notes (VRDNs) and tender option bonds (TOBs), which are floating rate instruments that provide the fund with the option to put or tender the VRDN or TOB back to the issuer at par. VRDNs and TOBs typically have some form of external credit or liquidity support. The fund also may invest in other municipal securities, including commercial paper, municipal notes and other short-term municipal obligations.

 

Municipal securities are issued by state and local governments, and certain U.S. territorial possessions, to finance public infrastructure projects such as streets and highways, schools, water and sewer systems, hospitals, and airports. They also may be issued to refinance outstanding obligations as well as to obtain funds for general operating expenses and for loans to other public institutions and facilities. There are two principal classifications of municipal securities:

 

●general obligation bonds, which are backed by the full faith, credit, and taxing power of the issuer; and
●revenue bonds, which are payable only from the revenues generated by a specific project or from another specific revenue source.

 

Under normal market conditions, up to 20% of the fund’s total assets may be invested in taxable money market securities and municipal securities subject to the alternative minimum tax, although the fund does not currently intend to invest in municipal securities subject to the alternative minimum tax.

 

Because the fund refers to tax-free investments in its name, it has a fundamental investment policy that it will normally invest its assets so that at least 80% of the income that it distributes will be exempt from federal regular income tax, including the federal alternative minimum tax. This policy may not be changed without shareholder approval.

Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the potential risks of investing in the fund. The fund’s past performance is not necessarily an indication of how the fund will perform in the future. Updated performance information is available online at www.firstamericanfunds.com or by calling 800 677-3863.

 

The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.

 

The performance shown in the bar chart and performance table is the performance of the fund’s predecessor entity, Retail Tax Free Obligations Fund, a series of First American Funds, Inc. (the “Predecessor Fund”), prior to the commencement of the fund’s operations. On December 22, 2023 the fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, the fund adopted the performance and financial history of the Predecessor Fund. The fund has the same investment objective, strategy, risks and investment adviser as the Predecessor Fund. As a result, the performance of the fund would have been substantially similar to that of the Predecessor Fund.

 

The bar chart shows the performance of the Predecessor Fund’s Class A shares which was adopted by the Class A shares of the fund for periods prior to the Reorganization. If the Predecessor Fund’s investment adviser had not waived or reimbursed certain Predecessor Fund expenses during these periods, the Predecessor Fund’s returns would have been lower.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart shows you the variability of the fund’s performance from year to year.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 677-3863
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.firstamericanfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund’s past performance is not necessarily an indication of how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading ANNUAL TOTAL RETURNS AS OF 12/31 EACH YEAR
Annual Return 2013 rr_AnnualReturn2013 none [62]
Annual Return 2014 rr_AnnualReturn2014 none [62]
Annual Return 2015 rr_AnnualReturn2015 none [62]
Annual Return 2016 rr_AnnualReturn2016 0.01% [62]
Annual Return 2017 rr_AnnualReturn2017 0.12% [62]
Annual Return 2018 rr_AnnualReturn2018 0.68% [62]
Annual Return 2019 rr_AnnualReturn2019 0.75% [62]
Annual Return 2020 rr_AnnualReturn2020 0.23% [62]
Annual Return 2021 rr_AnnualReturn2021 0.01% [62]
Annual Return 2022 rr_AnnualReturn2022 0.59% [62]
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Best Quarter: Quarter ended December 31, 2022 0.44%
     
Worst Quarter: Quarter ended March 31, 2022* 0.00%
     
*   Most recent quarter with this return during the period of the chart.
Year to Date Return, Label rr_YearToDateReturnLabel Total return for the period 1/1/2023 through 9/30/2023
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2023
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 1.85%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2022
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 0.44%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2022 [63]
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn none
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS AS OF 12/31/22
1 Year rr_AverageAnnualReturnYear01 0.59% [64],[65]
5 Years rr_AverageAnnualReturnYear05 0.45% [64],[65]
10 Years rr_AverageAnnualReturnYear10 0.24% [64],[65]
Inception Date rr_AverageAnnualReturnInceptionDate Sep. 24, 2001 [64],[65]
Retail Tax Free Obligations Fund | Class A Shares | Risk Lose Money [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock You could lose money by investing in the fund.
Retail Tax Free Obligations Fund | Class A Shares | Credit Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Credit Risk — The value of your investment might decline if the issuer of an obligation held by the fund defaults on the obligation or has its credit rating downgraded.

Retail Tax Free Obligations Fund | Class A Shares | Interest Rate Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Interest Rate Risk — The value of your investment might decline because of a sharp rise in interest rates that causes the value of the fund’s portfolio holdings to fall. During periods when interest rates are low or there are negative interest rates, the fund’s yield (and total return) also may be low or the fund may be unable to maintain positive returns.

Retail Tax Free Obligations Fund | Class A Shares | Market Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Market Risk — Market volatility, dramatic changes to interest rates, and otherwise unfavorable economic conditions resulting from major cybersecurity events, geopolitical events(including wars, such as Russia’s invasion of Ukraine, tensions in the Middle East, terror attacks, and disruptions to foreign economic and trade relationships), public health emergencies, among other events, may negatively impact the fund’s performance or impair the fund’s ability to achieve its investment objective.

Retail Tax Free Obligations Fund | Class A Shares | Liquidity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Liquidity Risk — The fund may not be able to sell a security in a timely manner or at a desired price, or may be unable to sell the security at all, because of a lack of demand in the market for the security, or a liquidity provider defaults on its obligation to purchase the security when properly tendered by the fund.

Retail Tax Free Obligations Fund | Class A Shares | Redemption Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Redemption Risk — If there are unexpectedly high redemptions of fund shares, the fund might have to sell portfolio securities prior to their maturity, possibly at a loss.

Retail Tax Free Obligations Fund | Class A Shares | Income Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Income Risk — The level of income you receive from the fund will be affected by movements in short-term interest rates.

Retail Tax Free Obligations Fund | Class A Shares | Cybersecurity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Cybersecurity Risk — The fund may be subject to operational and informational security risks resulting from breaches in cybersecurity at the fund, the fund’s affiliates or service providers. A cybersecurity breach at an issuer of securities in which the fund invests may cause such securities to lose value.

Retail Tax Free Obligations Fund | Class A Shares | Regulatory Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Regulatory Risk — Changes to monetary policy by the Federal Reserve or other regulatory actions may impact the fund’s operations, universe of potential investment options, and return potential.

Retail Tax Free Obligations Fund | Class A Shares | Variable Rate Demand Note V R D N Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Variable Rate Demand Note (VRDN) and Tender Option Bond (TOB) Risk — Investments in VRDNs and TOBs involve credit risk with respect to the issuer or financial institutional providing the fund with the credit and liquidity support for the put or tender option.

Retail Tax Free Obligations Fund | Class A Shares | Municipal Security Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Municipal Security Risk — The value of municipal securities owned by the fund may be adversely affected by future changes in federal income tax laws, including rate reductions or the imposition of a flat tax, and adverse changes in the financial conditions of municipal securities issuers.

Retail Tax Free Obligations Fund | Class A Shares | Tax Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Tax Risk — In order to be tax-exempt, municipal securities generally must meet certain regulatory requirements. If a municipal security fails to meet these requirements, the interest received by the fund from its investment in the security and distributed to shareholders may be taxable.

Retail Tax Free Obligations Fund | Class T Shares  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol FTJXX
Risk/Return [Heading] rr_RiskReturnHeading Retail Tax Free Obligations Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Retail Tax Free Obligations Fund’s objective is to seek maximum current income exempt from federal income taxes consistent with the preservation of capital and maintenance of liquidity.

Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following tables describe the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Maximum Cumulative Sales Charge (as a percentage of Offering Price) rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.10%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Component1 Other Expenses rr_Component1OtherExpensesOverAssets 0.20%
Component2 Other Expenses rr_Component2OtherExpensesOverAssets 0.20%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.50%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.10%) [66]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.40% [66]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2024
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

Example: This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and the fund’s operating expenses remain the same (except that the example incorporates the fund’s expense limitation arrangements for only the first year of each period presented). You would incur these hypothetical expenses whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 41
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 150
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 270
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 619
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Under normal market conditions, Retail Tax Free Obligations Fund invests at least 80% of its total assets in high-quality, short-term municipal securities that pay interest that is exempt from federal income tax, including the federal alternative minimum tax. The municipal securities in which the fund invests include variable rate demand notes (VRDNs) and tender option bonds (TOBs), which are floating rate instruments that provide the fund with the option to put or tender the VRDN or TOB back to the issuer at par. VRDNs and TOBs typically have some form of external credit or liquidity support. The fund also may invest in other municipal securities, including commercial paper, municipal notes and other short-term municipal obligations.

 

Municipal securities are issued by state and local governments, and certain U.S. territorial possessions, to finance public infrastructure projects such as streets and highways, schools, water and sewer systems, hospitals, and airports. They also may be issued to refinance outstanding obligations as well as to obtain funds for general operating expenses and for loans to other public institutions and facilities. There are two principal classifications of municipal securities:

 

●general obligation bonds, which are backed by the full faith, credit, and taxing power of the issuer; and

●revenue bonds, which are payable only from the revenues generated by a specific project or from another specific revenue source.

 

Under normal market conditions, up to 20% of the fund’s total assets may be invested in taxable money market securities and municipal securities subject to the alternative minimum tax, although the fund does not currently intend to invest in municipal securities subject to the alternative minimum tax.

 

Because the fund refers to tax-free investments in its name, it has a fundamental investment policy that it will normally invest its assets so that at least 80% of the income that it distributes will be exempt from federal regular income tax, including the federal alternative minimum tax. This policy may not be changed without shareholder approval.

Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the potential risks of investing in the fund. The fund’s past performance is not necessarily an indication of how the fund will perform in the future. Updated performance information is available online at firstamericanfunds.com or by calling 800 677-3863.

 

The bar chart shows the fund’s Class T performance for the period indicated. The table illustrates the fund’s average annual total returns over the time periods indicated. The bar chart does not reflect sales loads as none are applicable to Class T shares.

 

The performance shown in the bar chart and performance table is the performance of the fund’s predecessor entity, Retail Tax Free Obligations Fund, a series of First American Funds, Inc. (the “Predecessor Fund”), prior to the commencement of the fund’s operations. On December 22, 2023 the fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, the fund adopted the performance and financial history of the Predecessor Fund. The fund has the same investment objective, strategy, risks and investment adviser as the Predecessor Fund. As a result, the performance of the fund would have been substantially similar to that of the Predecessor Fund.

 

The bar chart shows the performance of the Predecessor Fund’s Class T shares which was adopted by the Class T shares of the fund for periods prior to the Reorganization. If the Predecessor Fund’s investment adviser had not waived or reimbursed certain Predecessor Fund expenses during these periods, the Predecessor Fund’s returns would have been lower.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart shows the fund’s Class T performance for the period indicated.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 677-3863
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress firstamericanfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund’s past performance is not necessarily an indication of how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading ANNUAL TOTAL RETURNS AS OF 12/31 EACH YEAR
Annual Return 2021 rr_AnnualReturn2021 0.01% [67]
Annual Return 2022 rr_AnnualReturn2022 0.82% [67]
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

 

Best Quarter: Quarter ended December 31, 2022 0.52%
Worst Quarter: Quarter ended March 31, 2022* 0.00%

*   Most recent quarter with this return during the period of the chart.
Year to Date Return, Label rr_YearToDateReturnLabel Total return for the period 1/1/2023 through 9/30/2023
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2023
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 2.12%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2022
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 0.52%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2022 [68]
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn none
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS AS OF 12/31/22
1 Year rr_AverageAnnualReturnYear01 0.82% [69]
Since Inception rr_AverageAnnualReturnSinceInception 0.36% [69]
Inception Date rr_AverageAnnualReturnInceptionDate Sep. 18, 2020 [69]
Retail Tax Free Obligations Fund | Class T Shares | Risk Lose Money [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock You could lose money by investing in the fund.
Retail Tax Free Obligations Fund | Class T Shares | Credit Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Credit Risk — The value of your investment might decline if the issuer of an obligation held by the fund defaults on the obligation or has its credit rating downgraded.

Retail Tax Free Obligations Fund | Class T Shares | Interest Rate Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Interest Rate Risk — The value of your investment might decline because of a sharp rise in interest rates that causes the value of the fund’s portfolio holdings to fall. During periods when interest rates are low or there are negative interest rates, the fund’s yield (and total return) also may be low or the fund may be unable to maintain positive returns.

Retail Tax Free Obligations Fund | Class T Shares | Market Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Market Risk — Market volatility, dramatic changes to interest rates, and otherwise unfavorable economic conditions resulting from major cybersecurity events, geopolitical events (including wars, such as Russia’s invasion of Ukraine, tensions in the Middle East, terror attacks, and disruptions to foreign economic and trade relationships), public health emergencies, among other events, may negatively impact the fund’s performance or impair the fund’s ability to achieve its investment objective.

Retail Tax Free Obligations Fund | Class T Shares | Liquidity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Liquidity Risk — The fund may not be able to sell a security in a timely manner or at a desired price, or may be unable to sell the security at all, because of a lack of demand in the market for the security, or a liquidity provider defaults on its obligation to purchase the security when properly tendered by the fund.

Retail Tax Free Obligations Fund | Class T Shares | Redemption Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Redemption Risk — If there are unexpectedly high redemptions of fund shares, the fund might have to sell portfolio securities prior to their maturity, possibly at a loss.

Retail Tax Free Obligations Fund | Class T Shares | Income Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Income Risk — The level of income you receive from the fund will be affected by movements in short-term interest rates.

Retail Tax Free Obligations Fund | Class T Shares | Cybersecurity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Cybersecurity Risk — The fund may be subject to operational and informational security risks resulting from breaches in cybersecurity at the fund, the fund’s affiliates or service providers. A cybersecurity breach at an issuer of securities in which the fund invests may cause such securities to lose value.

Retail Tax Free Obligations Fund | Class T Shares | Regulatory Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Regulatory Risk — Changes to monetary policy by the Federal Reserve or other regulatory actions may impact the fund’s operations, universe of potential investment options, and return potential. 

Retail Tax Free Obligations Fund | Class T Shares | Variable Rate Demand Note V R D N Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Variable Rate Demand Note (VRDN) and Tender Option Bond (TOB) Risk — Investments in VRDNs and TOBs involve credit risk with respect to the issuer or financial institutional providing the fund with the credit and liquidity support for the put or tender option.

Retail Tax Free Obligations Fund | Class T Shares | Municipal Security Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Municipal Security Risk — The value of municipal securities owned by the fund may be adversely affected by future changes in federal income tax laws, including rate reductions or the imposition of a flat tax, and adverse changes in the financial conditions of municipal securities issuers.

Retail Tax Free Obligations Fund | Class T Shares | Tax Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Tax Risk — In order to be tax-exempt, municipal securities generally must meet certain regulatory requirements. If a municipal security fails to meet these requirements, the interest received by the fund from its investment in the security and distributed to shareholders may be taxable.

Retail Tax Free Obligations Fund | Class V Shares  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol FHIXX
Risk/Return [Heading] rr_RiskReturnHeading Retail Tax Free Obligations Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Retail Tax Free Obligations Fund’s objective is to seek maximum current income exempt from federal income taxes consistent with the preservation of capital and maintenance of liquidity.

Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following tables describe the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Maximum Cumulative Sales Charge (as a percentage of Offering Price) rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.10%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Component1 Other Expenses rr_Component1OtherExpensesOverAssets 0.10%
Component2 Other Expenses rr_Component2OtherExpensesOverAssets 0.18%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.41%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.11%) [70]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.30% [70]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2024
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

Example: This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and the fund’s operating expenses remain the same (except that the example incorporates the fund’s expense limitation arrangements for only the first year of each period presented). You would incur these hypothetical expenses whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 31
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 121
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 219
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 507
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Under normal market conditions, Retail Tax Free Obligations Fund invests at least 80% of its total assets in high-quality, short-term municipal securities that pay interest that is exempt from federal income tax, including the federal alternative minimum tax. The municipal securities in which the fund invests include variable rate demand notes (VRDNs) and tender option bonds (TOBs), which are floating rate instruments that provide the fund with the option to put or tender the VRDN or TOB back to the issuer at par. VRDNs and TOBs typically have some form of external credit or liquidity support. The fund also may invest in other municipal securities, including commercial paper, municipal notes and other short-term municipal obligations.

 

Municipal securities are issued by state and local governments, and certain U.S. territorial possessions, to finance public infrastructure projects such as streets and highways, schools, water and sewer systems, hospitals, and airports. They also may be issued to refinance outstanding obligations as well as to obtain funds for general operating expenses and for loans to other public institutions and facilities. There are two principal classifications of municipal securities:

 

●general obligation bonds, which are backed by the full faith, credit, and taxing power of the issuer; and

●revenue bonds, which are payable only from the revenues generated by a specific project or from another specific revenue source.

 

Under normal market conditions, up to 20% of the fund’s total assets may be invested in taxable money market securities and municipal securities subject to the alternative minimum tax, although the fund does not currently intend to invest in municipal securities subject to the alternative minimum tax.

 

Because the fund refers to tax-free investments in its name, it has a fundamental investment policy that it will normally invest its assets so that at least 80% of the income that it distributes will be exempt from federal regular income tax, including the federal alternative minimum tax. This policy may not be changed without shareholder approval.

Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the potential risks of investing in the fund. The fund’s past performance is not necessarily an indication of how the fund will perform in the future. Updated performance information is available online at www.firstamericanfunds.com or by calling 800 677-3863.

 

The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.

 

The performance shown in the bar chart and performance table is the performance of the fund’s predecessor entity, Retail Tax Free Obligations Fund, a series of First American Funds, Inc. (the “Predecessor Fund”), prior to the commencement of the fund’s operations. On December 22, 2023 the fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, the fund adopted the performance and financial history of the Predecessor Fund. The fund has the same investment objective, strategy, risks and investment adviser as the Predecessor Fund. As a result, the performance of the fund would have been substantially similar to that of the Predecessor Fund.

 

The bar chart shows the performance of the Predecessor Fund’s Class V shares which was adopted by the Class V shares of the fund for periods prior to the Reorganization. If the Predecessor Fund’s investment adviser had not waived or reimbursed certain Predecessor Fund expenses during these periods, the Predecessor Fund’s returns would have been lower.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 677-3863
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.firstamericanfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund’s past performance is not necessarily an indication of how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading ANNUAL TOTAL RETURNS AS OF 12/31 EACH YEAR
Annual Return 2013 rr_AnnualReturn2013 none [71]
Annual Return 2014 rr_AnnualReturn2014 none [71]
Annual Return 2015 rr_AnnualReturn2015 none [71]
Annual Return 2016 rr_AnnualReturn2016 0.18% [71]
Annual Return 2017 rr_AnnualReturn2017 0.56% [71]
Annual Return 2018 rr_AnnualReturn2018 1.14% [71]
Annual Return 2019 rr_AnnualReturn2019 1.20% [71]
Annual Return 2020 rr_AnnualReturn2020 0.38% [71]
Annual Return 2021 rr_AnnualReturn2021 0.01% [71]
Annual Return 2022 rr_AnnualReturn2022 0.90% [71]
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Best Quarter: Quarter ended December 31, 2022 0.55%
Worst Quarter: Quarter ended December 31, 2021* 0.00%
*   Most recent quarter with this return during the period of the chart.
Year to Date Return, Label rr_YearToDateReturnLabel Total return for the period 1/1/2023 through 9/30/2023
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2023
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 2.20%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2022
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 0.55%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2021 [72]
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn none
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS AS OF 12/31/22
1 Year rr_AverageAnnualReturnYear01 0.90% [73],[74]
5 Years rr_AverageAnnualReturnYear05 0.72% [73],[74]
10 Years rr_AverageAnnualReturnYear10 0.44% [73],[74]
Inception Date rr_AverageAnnualReturnInceptionDate Mar. 31, 2006 [73],[74]
Retail Tax Free Obligations Fund | Class V Shares | Risk Lose Money [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock You could lose money by investing in the fund.
Retail Tax Free Obligations Fund | Class V Shares | Credit Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Credit Risk — The value of your investment might decline if the issuer of an obligation held by the fund defaults on the obligation or has its credit rating downgraded.

Retail Tax Free Obligations Fund | Class V Shares | Interest Rate Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Interest Rate Risk — The value of your investment might decline because of a sharp rise in interest rates that causes the value of the fund’s portfolio holdings to fall. During periods when interest rates are low or there are negative interest rates, the fund’s yield (and total return) also may be low or the fund may be unable to maintain positive returns.

Retail Tax Free Obligations Fund | Class V Shares | Market Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Market Risk — Market volatility, dramatic changes to interest rates, and otherwise unfavorable economic conditions resulting from major cybersecurity events, geopolitical events (including wars, such as Russia’s invasion of Ukraine, tensions in the Middle East, terror attacks, and disruptions to foreign economic and trade relationships), public health emergencies, among other events, may negatively impact the fund’s performance or impair the fund’s ability to achieve its investment objective.

Retail Tax Free Obligations Fund | Class V Shares | Liquidity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Liquidity Risk — The fund may not be able to sell a security in a timely manner or at a desired price, or may be unable to sell the security at all, because of a lack of demand in the market for the security, or a liquidity provider defaults on its obligation to purchase the security when properly tendered by the fund.

Retail Tax Free Obligations Fund | Class V Shares | Redemption Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Redemption Risk — If there are unexpectedly high redemptions of fund shares, the fund might have to sell portfolio securities prior to their maturity, possibly at a loss.

Retail Tax Free Obligations Fund | Class V Shares | Income Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Income Risk — The level of income you receive from the fund will be affected by movements in short-term interest rates.

Retail Tax Free Obligations Fund | Class V Shares | Cybersecurity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Cybersecurity Risk — The fund may be subject to operational and informational security risks resulting from breaches in cybersecurity at the fund, the fund’s affiliates or service providers. A cybersecurity breach at an issuer of securities in which the fund invests may cause such securities to lose value.

Retail Tax Free Obligations Fund | Class V Shares | Regulatory Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Regulatory Risk — Changes to monetary policy by the Federal Reserve or other regulatory actions may impact the fund’s operations, universe of potential investment options, and return potential. 

Retail Tax Free Obligations Fund | Class V Shares | Variable Rate Demand Note V R D N Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Variable Rate Demand Note (VRDN) and Tender Option Bond (TOB) Risk — Investments in VRDNs and TOBs involve credit risk with respect to the issuer or financial institutional providing the fund with the credit and liquidity support for the put or tender option.

Retail Tax Free Obligations Fund | Class V Shares | Municipal Security Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Municipal Security Risk — The value of municipal securities owned by the fund may be adversely affected by future changes in federal income tax laws, including rate reductions or the imposition of a flat tax, and adverse changes in the financial conditions of municipal securities issuers.

Retail Tax Free Obligations Fund | Class V Shares | Tax Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Tax Risk — In order to be tax-exempt, municipal securities generally must meet certain regulatory requirements. If a municipal security fails to meet these requirements, the interest received by the fund from its investment in the security and distributed to shareholders may be taxable.

Retail Tax Free Obligations Fund | Class Y Shares  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol FFCXX
Risk/Return [Heading] rr_RiskReturnHeading Retail Tax Free Obligations Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Retail Tax Free Obligations Fund’s objective is to seek maximum current income exempt from federal income taxes consistent with the preservation of capital and maintenance of liquidity.

Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following tables describe the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Maximum Cumulative Sales Charge (as a percentage of Offering Price) rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.10%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Component1 Other Expenses rr_Component1OtherExpensesOverAssets 0.25%
Component2 Other Expenses rr_Component2OtherExpensesOverAssets 0.21%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.56%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.09%) [75]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.45% [75]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2024
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

Example: This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and the fund’s operating expenses remain the same (except that the example incorporates the fund’s expense limitation arrangements for only the first year of each period presented). You would incur these hypothetical expenses whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 46
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 168
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 302
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 691
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Under normal market conditions, Retail Tax Free Obligations Fund invests at least 80% of its total assets in high-quality, short-term municipal securities that pay interest that is exempt from federal income tax, including the federal alternative minimum tax. The municipal securities in which the fund invests include variable rate demand notes (VRDNs) and tender option bonds (TOBs), which are floating rate instruments that provide the fund with the option to put or tender the VRDN or TOB back to the issuer at par. VRDNs and TOBs typically have some form of external credit or liquidity support. The fund also may invest in other municipal securities, including commercial paper, municipal notes and other short-term municipal obligations.

 

Municipal securities are issued by state and local governments, and certain U.S. territorial possessions, to finance public infrastructure projects such as streets and highways, schools, water and sewer systems, hospitals, and airports. They also may be issued to refinance outstanding obligations as well as to obtain funds for general operating expenses and for loans to other public institutions and facilities. There are two principal classifications of municipal securities:

 

•general obligation bonds, which are backed by the full faith, credit, and taxing power of the issuer; and

•revenue bonds, which are payable only from the revenues generated by a specific project or from another specific revenue source.

 

Under normal market conditions, up to 20% of the fund’s total assets may be invested in taxable money market securities and municipal securities subject to the alternative minimum tax, although the fund does not currently intend to invest in municipal securities subject to the alternative minimum tax.

 

Because the fund refers to tax-free investments in its name, it has a fundamental investment policy that it will normally invest its assets so that at least 80% of the income that it distributes will be exempt from federal regular income tax, including the federal alternative minimum tax. This policy may not be changed without shareholder approval.

Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the potential risks of investing in the fund. The fund’s past performance is not necessarily an indication of how the fund will perform in the future. Updated performance information is available online at www.firstamericanfunds.com or by calling 800 677-3863.

 

The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.

 

The performance shown in the bar chart and performance table is the performance of the fund’s predecessor entity, Retail Tax Free Obligations Fund, a series of First American Funds, Inc. (the “Predecessor Fund”), prior to the commencement of the fund’s operations. On December 22, 2023 the fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, the fund adopted the performance and financial history of the Predecessor Fund. The fund has the same investment objective, strategy, risks and investment adviser as the Predecessor Fund. As a result, the performance of the fund would have been substantially similar to that of the Predecessor Fund.

 

The bar chart shows the performance of the Predecessor Fund’s Class Y shares which was adopted by the Class Y shares of the fund for periods prior to the Reorganization. If the Predecessor Fund’s investment adviser had not waived or reimbursed certain Predecessor Fund expenses during these periods, the Predecessor Fund’s returns would have been lower.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 677-3863
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.firstamericanfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund’s past performance is not necessarily an indication of how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading ANNUAL TOTAL RETURNS AS OF 12/31 EACH YEAR
Annual Return 2013 rr_AnnualReturn2013 none [76]
Annual Return 2014 rr_AnnualReturn2014 none [76]
Annual Return 2015 rr_AnnualReturn2015 0.09% [76]
Annual Return 2016 rr_AnnualReturn2016 0.41% [76]
Annual Return 2017 rr_AnnualReturn2017 0.98% [76]
Annual Return 2018 rr_AnnualReturn2018 1.05% [76]
Annual Return 2019 rr_AnnualReturn2019 0.32% [76]
Annual Return 2020 rr_AnnualReturn2020 0.32% [76]
Annual Return 2021 rr_AnnualReturn2021 0.01% [76]
Annual Return 2022 rr_AnnualReturn2022 0.78% [76]
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Best Quarter: Quarter ended December 31, 2022 0.51%
     
Worst Quarter: Quarter ended March 31, 2022* 0.00%
     
*   Most recent quarter with this return during the period of the chart.
Year to Date Return, Label rr_YearToDateReturnLabel Total return for the period 1/1/2023 through 9/30/2023
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2023
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 2.08%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2022
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 0.51%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2022 [77]
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn none
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS AS OF 12/31/22
1 Year rr_AverageAnnualReturnYear01 0.78% [78],[79]
5 Years rr_AverageAnnualReturnYear05 0.63% [78],[79]
10 Years rr_AverageAnnualReturnYear10 0.36% [78],[79]
Inception Date rr_AverageAnnualReturnInceptionDate Jan. 09, 1995 [78],[79]
Retail Tax Free Obligations Fund | Class Y Shares | Risk Lose Money [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock You could lose money by investing in the fund.
Retail Tax Free Obligations Fund | Class Y Shares | Credit Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Credit Risk — The value of your investment might decline if the issuer of an obligation held by the fund defaults on the obligation or has its credit rating downgraded.

Retail Tax Free Obligations Fund | Class Y Shares | Interest Rate Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Interest Rate Risk — The value of your investment might decline because of a sharp rise in interest rates that causes the value of the fund’s portfolio holdings to fall. During periods when interest rates are low or there are negative interest rates, the fund’s yield (and total return) also may be low or the fund may be unable to maintain positive returns.

Retail Tax Free Obligations Fund | Class Y Shares | Market Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Market Risk — Market volatility, dramatic changes to interest rates, and otherwise unfavorable economic conditions resulting from major cybersecurity events, geopolitical events (including wars, such as Russia’s invasion of Ukraine, tensions in the Middle East, terror attacks, and disruptions to foreign economic and trade relationships), public health emergencies, among other events, may negatively impact the fund’s performance or impair the fund’s ability to achieve its investment objective.

Retail Tax Free Obligations Fund | Class Y Shares | Liquidity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Liquidity Risk — The fund may not be able to sell a security in a timely manner or at a desired price, or may be unable to sell the security at all, because of a lack of demand in the market for the security, or a liquidity provider defaults on its obligation to purchase the security when properly tendered by the fund.

Retail Tax Free Obligations Fund | Class Y Shares | Redemption Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Redemption Risk — If there are unexpectedly high redemptions of fund shares, the fund might have to sell portfolio securities prior to their maturity, possibly at a loss.

Retail Tax Free Obligations Fund | Class Y Shares | Income Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Income Risk — The level of income you receive from the fund will be affected by movements in short-term interest rates.

Retail Tax Free Obligations Fund | Class Y Shares | Cybersecurity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Cybersecurity Risk — The fund may be subject to operational and informational security risks resulting from breaches in cybersecurity at the fund, the fund’s affiliates or service providers. A cybersecurity breach at an issuer of securities in which the fund invests may cause such securities to lose value.

Retail Tax Free Obligations Fund | Class Y Shares | Regulatory Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Regulatory Risk — Changes to monetary policy by the Federal Reserve or other regulatory actions may impact the fund’s operations, universe of potential investment options, and return potential.

Retail Tax Free Obligations Fund | Class Y Shares | Variable Rate Demand Note V R D N Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Variable Rate Demand Note (VRDN) and Tender Option Bond (TOB) Risk — Investments in VRDNs and TOBs involve credit risk with respect to the issuer or financial institutional providing the fund with the credit and liquidity support for the put or tender option.

Retail Tax Free Obligations Fund | Class Y Shares | Municipal Security Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Municipal Security Risk — The value of municipal securities owned by the fund may be adversely affected by future changes in federal income tax laws, including rate reductions or the imposition of a flat tax, and adverse changes in the financial conditions of municipal securities issuers.

Retail Tax Free Obligations Fund | Class Y Shares | Tax Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Tax Risk — In order to be tax-exempt, municipal securities generally must meet certain regulatory requirements. If a municipal security fails to meet these requirements, the interest received by the fund from its investment in the security and distributed to shareholders may be taxable.

Retail Tax Free Obligations Fund | Class Z Shares  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol FTZXX
Risk/Return [Heading] rr_RiskReturnHeading Retail Tax Free Obligations Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Retail Tax Free Obligations Fund’s objective is to seek maximum current income exempt from federal income taxes consistent with the preservation of capital and maintenance of liquidity.

Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following tables describe the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Maximum Cumulative Sales Charge (as a percentage of Offering Price) rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.10%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets 0.22%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.32%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.12%) [80]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.20% [80]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2024
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

Example: This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and the fund’s operating expenses remain the same (except that the example incorporates the fund’s expense limitation arrangements for only the first year of each period presented). You would incur these hypothetical expenses whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 20
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 91
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 168
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 394
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Under normal market conditions, Retail Tax Free Obligations Fund invests at least 80% of its total assets in high-quality, short-term municipal securities that pay interest that is exempt from federal income tax, including the federal alternative minimum tax. The municipal securities in which the fund invests include variable rate demand notes (VRDNs) and tender option bonds (TOBs), which are floating rate instruments that provide the fund with the option to put or tender the VRDN or TOB back to the issuer at par. VRDNs and TOBs typically have some form of external credit or liquidity support. The fund also may invest in other municipal securities, including commercial paper, municipal notes and other short-term municipal obligations.

 

Municipal securities are issued by state and local governments, and certain U.S. territorial possessions, to finance public infrastructure projects such as streets and highways, schools, water and sewer systems, hospitals, and airports. They also may be issued to refinance outstanding obligations as well as to obtain funds for general operating expenses and for loans to other public institutions and facilities. There are two principal classifications of municipal securities:

 

●general obligation bonds, which are backed by the full faith, credit, and taxing power of the issuer; and

●revenue bonds, which are payable only from the revenues generated by a specific project or from another specific revenue source.

 

Under normal market conditions, up to 20% of the fund’s total assets may be invested in taxable money market securities and municipal securities subject to the alternative minimum tax, although the fund does not currently intend to invest in municipal securities subject to the alternative minimum tax.

 

Because the fund refers to tax-free investments in its name, it has a fundamental investment policy that it will normally invest its assets so that at least 80% of the income that it distributes will be exempt from federal regular income tax, including the federal alternative minimum tax. This policy may not be changed without shareholder approval.

Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the potential risks of investing in the fund. The fund’s past performance is not necessarily an indication of how the fund will perform in the future. Updated performance information is available online at www.firstamericanfunds.com or by calling 800 677-3863.

 

The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.

 

The performance shown in the bar chart and performance table is the performance of the fund’s predecessor entity, Retail Tax Free Obligations Fund, a series of First American Funds, Inc. (the “Predecessor Fund”), prior to the commencement of the fund’s operations. On December 22, 2023 the fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, the fund adopted the performance and financial history of the Predecessor Fund. The fund has the same investment objective, strategy, risks and investment adviser as the Predecessor Fund. As a result, the performance of the fund would have been substantially similar to that of the Predecessor Fund.

  

The bar chart shows the performance of the Predecessor Fund’s Class Z shares which was adopted by the Class Z shares of the fund for periods prior to the Reorganization. If the Predecessor Fund’s investment adviser had not waived or reimbursed certain Predecessor Fund expenses during these periods, the Predecessor Fund’s returns would have been lower.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart shows you the variability of the fund’s performance from year to year.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 677-3863
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.firstamericanfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund’s past performance is not necessarily an indication of how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading ANNUAL TOTAL RETURNS AS OF 12/31 EACH YEAR
Annual Return 2013 rr_AnnualReturn2013 none [81]
Annual Return 2014 rr_AnnualReturn2014 none [81]
Annual Return 2015 rr_AnnualReturn2015 none [81]
Annual Return 2016 rr_AnnualReturn2016 0.26% [81]
Annual Return 2017 rr_AnnualReturn2017 0.66% [81]
Annual Return 2018 rr_AnnualReturn2018 1.24% [81]
Annual Return 2019 rr_AnnualReturn2019 1.30% [81]
Annual Return 2020 rr_AnnualReturn2020 0.44% [81]
Annual Return 2021 rr_AnnualReturn2021 0.01% [81]
Annual Return 2022 rr_AnnualReturn2022 0.98% [81]
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Best Quarter: Quarter ended December 31, 2022 0.58%
Worst Quarter: Quarter ended December 31, 2021* 0.00%
*   Most recent quarter with this return during the period of the chart.
Year to Date Return, Label rr_YearToDateReturnLabel Total return for the period 1/1/2023 through 9/30/2023
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2023
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 2.27%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2022
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 0.58%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2021 [82]
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn none
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS AS OF 12/31/22
1 Year rr_AverageAnnualReturnYear01 0.98% [83],[84]
5 Years rr_AverageAnnualReturnYear05 0.79% [83],[84]
10 Years rr_AverageAnnualReturnYear10 0.49% [83],[84]
Inception Date rr_AverageAnnualReturnInceptionDate Dec. 01, 2003 [83],[84]
Retail Tax Free Obligations Fund | Class Z Shares | Risk Lose Money [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock You could lose money by investing in the fund.
Retail Tax Free Obligations Fund | Class Z Shares | Credit Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Credit Risk — The value of your investment might decline if the issuer of an obligation held by the fund defaults on the obligation or has its credit rating downgraded.

Retail Tax Free Obligations Fund | Class Z Shares | Interest Rate Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Interest Rate Risk — The value of your investment might decline because of a sharp rise in interest rates that causes the value of the fund’s portfolio holdings to fall. During periods when interest rates are low or there are negative interest rates, the fund’s yield (and total return) also may be low or the fund may be unable to maintain positive returns.

Retail Tax Free Obligations Fund | Class Z Shares | Market Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Market Risk — Market volatility, dramatic changes to interest rates, and otherwise unfavorable economic conditions resulting from major cybersecurity events, geopolitical events (including wars, such as Russia’s invasion of Ukraine, tensions in the Middle East, terror attacks, and disruptions to foreign economic and trade relationships), public health emergencies, among other events, may negatively impact the fund’s performance or impair the fund’s ability to achieve its investment objective.

Retail Tax Free Obligations Fund | Class Z Shares | Liquidity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Liquidity Risk — The fund may not be able to sell a security in a timely manner or at a desired price, or may be unable to sell the security at all, because of a lack of demand in the market for the security, or a liquidity provider defaults on its obligation to purchase the security when properly tendered by the fund.

Retail Tax Free Obligations Fund | Class Z Shares | Redemption Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Redemption Risk — If there are unexpectedly high redemptions of fund shares, the fund might have to sell portfolio securities prior to their maturity, possibly at a loss.

Retail Tax Free Obligations Fund | Class Z Shares | Income Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Income Risk — The level of income you receive from the fund will be affected by movements in short-term interest rates.

Retail Tax Free Obligations Fund | Class Z Shares | Cybersecurity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Cybersecurity Risk — The fund may be subject to operational and informational security risks resulting from breaches in cybersecurity at the fund, the fund’s affiliates or service providers. A cybersecurity breach at an issuer of securities in which the fund invests may cause such securities to lose value.

Retail Tax Free Obligations Fund | Class Z Shares | Regulatory Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Regulatory Risk — Changes to monetary policy by the Federal Reserve or other regulatory actions may impact the fund’s operations, universe of potential investment options, and return potential.

Retail Tax Free Obligations Fund | Class Z Shares | Variable Rate Demand Note V R D N Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Variable Rate Demand Note (VRDN) and Tender Option Bond (TOB) Risk — Investments in VRDNs and TOBs involve credit risk with respect to the issuer or financial institutional providing the fund with the credit and liquidity support for the put or tender option.

Retail Tax Free Obligations Fund | Class Z Shares | Municipal Security Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Municipal Security Risk — The value of municipal securities owned by the fund may be adversely affected by future changes in federal income tax laws, including rate reductions or the imposition of a flat tax, and adverse changes in the financial conditions of municipal securities issuers.

Retail Tax Free Obligations Fund | Class Z Shares | Tax Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Tax Risk — In order to be tax-exempt, municipal securities generally must meet certain regulatory requirements. If a municipal security fails to meet these requirements, the interest received by the fund from its investment in the security and distributed to shareholders may be taxable.

Treasury Obligations Fund | Class A Shares  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol FATXX
Risk/Return [Heading] rr_RiskReturnHeading Treasury Obligations Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Treasury Obligations Fund’s objective is to seek maximum current income consistent with the preservation of capital and maintenance of liquidity.

Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following tables describe the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Maximum Cumulative Sales Charge (as a percentage of Offering Price) rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Shareholder Fee, Other rr_ShareholderFeeOther $ 15
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.10%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Component1 Other Expenses rr_Component1OtherExpensesOverAssets 0.25%
Component2 Other Expenses rr_Component2OtherExpensesOverAssets 0.15%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.75%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets none [85]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.75% [85]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2024
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

Example: This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and the fund’s operating expenses remain the same (except that the example incorporates the fund’s expense limitation arrangements for only the first year of each period presented). You would incur these hypothetical expenses whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 77
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 240
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 417
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 930
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Under normal market conditions, Treasury Obligations Fund invests exclusively in short-term U.S. Treasury obligations, including repurchase agreements secured by U.S. Treasury obligations. The U.S. Treasury obligations in which the fund invests include U.S. Treasury bonds, notes, and bills. These types of Treasury securities are essentially the same except for differences in interest rates, maturities, and dates of issuance. U.S. Treasury obligations are backed by the full faith and credit of the U.S. government.

Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the potential risks of investing in the fund. The fund’s past performance is not necessarily an indication of how the fund will perform in the future. Updated performance information is available online at www.firstamericanfunds.com or by calling 800 677-3863.

 

The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.

 

The performance shown in the bar chart and performance table is the performance of the fund’s predecessor entity, Treasury Obligations Fund, a series of First American Funds, Inc. (the “Predecessor Fund”), prior to the commencement of the fund’s operations. On December 22, 2023 the fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, the fund adopted the performance and financial history of the Predecessor Fund. The fund has the same investment objective, strategy, risks and investment adviser as the Predecessor Fund. As a result, the performance of the fund would have been substantially similar to that of the Predecessor Fund.

 

The bar chart shows the performance of the Predecessor Fund’s Class A shares which was adopted by the Class A shares of the fund for periods prior to the Reorganization. If the Predecessor Fund’s investment adviser had not waived or reimbursed certain Predecessor Fund expenses during these periods, the Predecessor Fund’s returns would have been lower.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart shows you the variability of the fund’s performance from year to year
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 677-3863
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.firstamericanfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund’s past performance is not necessarily an indication of how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading ANNUAL TOTAL RETURNS AS OF 12/31 EACH YEAR
Annual Return 2013 rr_AnnualReturn2013 none [86]
Annual Return 2014 rr_AnnualReturn2014 none [86]
Annual Return 2015 rr_AnnualReturn2015 none [86]
Annual Return 2016 rr_AnnualReturn2016 none [86]
Annual Return 2017 rr_AnnualReturn2017 0.21% [86]
Annual Return 2018 rr_AnnualReturn2018 1.13% [86]
Annual Return 2019 rr_AnnualReturn2019 1.49% [86]
Annual Return 2020 rr_AnnualReturn2020 0.18% [86]
Annual Return 2021 rr_AnnualReturn2021 0.01% [86]
Annual Return 2022 rr_AnnualReturn2022 1.13% [86]
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Best Quarter: Quarter ended December 31, 2022 0.74%
     
Worst Quarter: Quarter ended March 31, 2022* 0.00%
     
*   Most recent quarter with this return during the period of the chart.
Year to Date Return, Label rr_YearToDateReturnLabel Total return for the period 1/1/2023 through 9/30/2023
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2023
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 3.21%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2022
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 0.74%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2022 [87]
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn none
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS AS OF 12/31/22
1 Year rr_AverageAnnualReturnYear01 1.13% [88]
5 Years rr_AverageAnnualReturnYear05 0.79% [88]
10 Years rr_AverageAnnualReturnYear10 0.41% [88]
Inception Date rr_AverageAnnualReturnInceptionDate Sep. 24, 2001 [88]
Treasury Obligations Fund | Class A Shares | Risk Lose Money [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock You could lose money by investing in the fund.
Treasury Obligations Fund | Class A Shares | Credit Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Credit Risk — The value of your investment might decline if the issuer of an obligation held by the fund defaults on the obligation or has its credit rating downgraded.

Treasury Obligations Fund | Class A Shares | Interest Rate Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Interest Rate Risk — The value of your investment might decline because of a sharp rise in interest rates that causes the value of the fund’s portfolio holdings to fall. During periods when interest rates are low or there are negative interest rates, the fund’s yield (and total return) also may be low or the fund may be unable to maintain positive returns.

Treasury Obligations Fund | Class A Shares | Market Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Market Risk — Market volatility, dramatic changes to interest rates, and otherwise unfavorable economic conditions resulting from major cybersecurity events, geopolitical events (including wars, such as Russia’s invasion of Ukraine, tensions in the Middle East, terror attacks, and disruptions to foreign economic and trade relationships), public health emergencies, among other events, may negatively impact the fund’s performance or impair the fund’s ability to achieve its investment objective.

Treasury Obligations Fund | Class A Shares | Liquidity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Liquidity Risk — The fund may not be able to sell a security in a timely manner or at a desired price, or may be unable to sell the security at all, because of a lack of demand in the market for the security.

Treasury Obligations Fund | Class A Shares | Redemption Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Redemption Risk — If there are unexpectedly high redemptions of fund shares, the fund might have to sell portfolio securities prior to their maturity, possibly at a loss.

Treasury Obligations Fund | Class A Shares | Repurchase Agreement Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Repurchase Agreement Risk — If the seller of a repurchase agreement defaults on its obligation to repurchase securities from the fund, the fund may incur costs in disposing of the collateral and may experience losses if there is any delay in its ability to do so.

Treasury Obligations Fund | Class A Shares | Income Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Income Risk — The level of income you receive from the fund will be affected by movements in short-term interest rates.

Treasury Obligations Fund | Class A Shares | Cybersecurity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Cybersecurity Risk — The fund may be subject to operational and informational security risks resulting from breaches in cybersecurity at the fund, the fund’s affiliates or service providers. A cybersecurity breach at an issuer of securities in which the fund invests may cause such securities to lose value.

Treasury Obligations Fund | Class A Shares | Regulatory Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Regulatory Risk — Changes to monetary policy by the Federal Reserve or other regulatory actions may impact the fund’s operations, universe of potential investment options, and return potential.

Treasury Obligations Fund | Class D Shares  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol FTDXX
Risk/Return [Heading] rr_RiskReturnHeading Treasury Obligations Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Treasury Obligations Fund’s objective is to seek maximum current income consistent with the preservation of capital and maintenance of liquidity.

Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following tables describe the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Maximum Cumulative Sales Charge (as a percentage of Offering Price) rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.10%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.15%
Component1 Other Expenses rr_Component1OtherExpensesOverAssets 0.25%
Component2 Other Expenses rr_Component2OtherExpensesOverAssets 0.10%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.60%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets none [89]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.60% [89]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2024
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

Example: This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and the fund’s operating expenses remain the same (except that the example incorporates the fund’s expense limitation arrangements for only the first year of each period presented). You would incur these hypothetical expenses whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 61
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 192
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 335
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 750
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Under normal market conditions, Treasury Obligations Fund invests exclusively in short-term U.S. Treasury obligations, including repurchase agreements secured by U.S. Treasury obligations. The U.S. Treasury obligations in which the fund invests include U.S. Treasury bonds, notes, and bills. These types of Treasury securities are essentially the same except for differences in interest rates, maturities, and dates of issuance. U.S. Treasury obligations are backed by the full faith and credit of the U.S. government.

Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the potential risks of investing in the fund. The fund’s past performance is not necessarily an indication of how the fund will perform in the future. Updated performance information is available online at www.firstamericanfunds.com or by calling 800 677-3863.

 

The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.

 

The performance shown in the bar chart and performance table is the performance of the fund’s predecessor entity, Treasury Obligations Fund, a series of First American Funds, Inc. (the “Predecessor Fund”), prior to the commencement of the fund’s operations. As of December 22, 2023 the fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, the fund adopted the performance and financial history of the Predecessor Fund. The fund has the same investment objective, strategy, risks and investment adviser as the Predecessor Fund. As a result, the performance of the fund would have been substantially similar to that of the Predecessor Fund.

  

The bar chart shows the performance of the Predecessor Fund’s Class D shares which was adopted by the Class D shares of the fund for periods prior to the Reorganization. If the Predecessor Fund’s investment adviser had not waived or reimbursed certain Predecessor Fund expenses during these periods, the Predecessor Fund’s returns would have been lower.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart shows you the variability of the fund’s performance from year to year.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 677-3863
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.firstamericanfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund’s past performance is not necessarily an indication of how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading ANNUAL TOTAL RETURNS AS OF 12/31 EACH YEAR
Annual Return 2013 rr_AnnualReturn2013 none [90]
Annual Return 2014 rr_AnnualReturn2014 none [90]
Annual Return 2015 rr_AnnualReturn2015 none [90]
Annual Return 2016 rr_AnnualReturn2016 none [90]
Annual Return 2017 rr_AnnualReturn2017 0.33% [90]
Annual Return 2018 rr_AnnualReturn2018 1.29% [90]
Annual Return 2019 rr_AnnualReturn2019 1.64% [90]
Annual Return 2020 rr_AnnualReturn2020 0.21% [90]
Annual Return 2021 rr_AnnualReturn2021 0.01% [90]
Annual Return 2022 rr_AnnualReturn2022 1.23% [90]
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Best Quarter: Quarter ended December 31, 2022 0.78%
Worst Quarter: Quarter ended March 31, 2022* 0.00%

*   Most recent quarter with this return during the period of the chart.

Year to Date Return, Label rr_YearToDateReturnLabel Total return for the period 1/1/2023 through 9/30/2023
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2023
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 3.32%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2022
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 0.78%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2022 [91]
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn none
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS AS OF 12/31/22
1 Year rr_AverageAnnualReturnYear01 1.23% [92]
5 Years rr_AverageAnnualReturnYear05 0.87% [92]
10 Years rr_AverageAnnualReturnYear10 0.47% [92]
Inception Date rr_AverageAnnualReturnInceptionDate Oct. 04, 1993 [92]
Treasury Obligations Fund | Class D Shares | Risk Lose Money [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock You could lose money by investing in the fund.
Treasury Obligations Fund | Class D Shares | Credit Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Credit Risk — The value of your investment might decline if the issuer of an obligation held by the fund defaults on the obligation or has its credit rating downgraded.

Treasury Obligations Fund | Class D Shares | Interest Rate Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Interest Rate Risk — The value of your investment might decline because of a sharp rise in interest rates that causes the value of the fund’s portfolio holdings to fall. During periods when interest rates are low or there are negative interest rates, the fund’s yield (and total return) also may be low or the fund may be unable to maintain positive returns.

Treasury Obligations Fund | Class D Shares | Market Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Market Risk — Market volatility, dramatic changes to interest rates, and otherwise unfavorable economic conditions resulting from major cybersecurity events, geopolitical events (including wars, such as Russia’s invasion of Ukraine, tensions in the Middle East, terror attacks, and disruptions to foreign economic and trade relationships), public health emergencies, among other events, may negatively impact the fund’s performance or impair the fund’s ability to achieve its investment objective.

Treasury Obligations Fund | Class D Shares | Liquidity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Liquidity Risk — The fund may not be able to sell a security in a timely manner or at a desired price, or may be unable to sell the security at all, because of a lack of demand in the market for the security.

Treasury Obligations Fund | Class D Shares | Redemption Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Redemption Risk — If there are unexpectedly high redemptions of fund shares, the fund might have to sell portfolio securities prior to their maturity, possibly at a loss.

Treasury Obligations Fund | Class D Shares | Repurchase Agreement Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Repurchase Agreement Risk — If the seller of a repurchase agreement defaults on its obligation to repurchase securities from the fund, the fund may incur costs in disposing of the collateral and may experience losses if there is any delay in its ability to do so.

Treasury Obligations Fund | Class D Shares | Income Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Income Risk — The level of income you receive from the fund will be affected by movements in short-term interest rates.

Treasury Obligations Fund | Class D Shares | Cybersecurity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Cybersecurity Risk — The fund may be subject to operational and informational security risks resulting from breaches in cybersecurity at the fund, the fund’s affiliates or service providers. A cybersecurity breach at an issuer of securities in which the fund invests may cause such securities to lose value.

Treasury Obligations Fund | Class D Shares | Regulatory Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Regulatory Risk — Changes to monetary policy by the Federal Reserve or other regulatory actions may impact the fund’s operations, universe of potential investment options, and return potential.

Treasury Obligations Fund | Class P Shares  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol FUPXX
Risk/Return [Heading] rr_RiskReturnHeading Treasury Obligations Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Treasury Obligations Fund’s objective is to seek maximum current income consistent with the preservation of capital and maintenance of liquidity.

Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following tables describe the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Maximum Cumulative Sales Charge (as a percentage of Offering Price) rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.10%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets 0.10%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.20%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.02%) [93]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.18% [93]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2024
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

Example: This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and the fund’s operating expenses remain the same (except that the example incorporates the fund’s expense limitation arrangements for only the first year of each period presented). You would incur these hypothetical expenses whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 18
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 62
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 111
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 253
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Under normal market conditions, Treasury Obligations Fund invests exclusively in short-term U.S. Treasury obligations, including repurchase agreements secured by U.S. Treasury obligations. The U.S. Treasury obligations in which the fund invests include U.S. Treasury bonds, notes, and bills. These types of Treasury securities are essentially the same except for differences in interest rates, maturities, and dates of issuance. U.S. Treasury obligations are backed by the full faith and credit of the U.S. government.

Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the potential risks of investing in the fund. The fund’s past performance is not necessarily an indication of how the fund will perform in the future. Updated performance information is available online at www.firstamericanfunds.com or by calling 800 677-3863.

 

The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.

 

The performance shown in the bar chart and performance table is the performance of the fund’s predecessor entity, Treasury Obligations Fund, a series of First American Funds, Inc. (the “Predecessor Fund”), prior to the commencement of the fund’s operations. On December 22, 2023 the fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, the fund adopted the performance and financial history of the Predecessor Fund. The fund has the same investment objective, strategy, risks and investment adviser as the Predecessor Fund. As a result, the performance of the fund would have been substantially similar to that of the Predecessor Fund.

 

The bar chart shows the performance of the Predecessor Fund’s Class P shares which was adopted by the Class P shares of the fund for periods prior to the Reorganization. If the Predecessor Fund’s investment adviser had not waived or reimbursed certain Predecessor Fund expenses during these periods, the Predecessor Fund’s returns would have been lower.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart shows you the variability of the fund’s performance from year to year.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 677-3863
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.firstamericanfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund’s past performance is not necessarily an indication of how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading ANNUAL TOTAL RETURNS AS OF 12/31 EACH YEAR
Annual Return 2018 rr_AnnualReturn2018 1.74% [94]
Annual Return 2019 rr_AnnualReturn2019 2.10% [94]
Annual Return 2020 rr_AnnualReturn2020 0.37% [94]
Annual Return 2021 rr_AnnualReturn2021 0.02% [94]
Annual Return 2022 rr_AnnualReturn2022 1.57% [94]
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Best Quarter: Quarter ended December 31, 2022 0.89%
Worst Quarter: Quarter ended December 31, 2021* 0.00%
*   Most recent quarter with this return during the period of the chart.
Year to Date Return, Label rr_YearToDateReturnLabel Total return for the period 1/1/2023 through 9/30/2023
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2023
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 3.67%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2022
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 0.89%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2021 [95]
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn none
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS AS OF 12/31/22
1 Year rr_AverageAnnualReturnYear01 1.57% [96]
5 Years rr_AverageAnnualReturnYear05 1.16% [96]
Since Inception rr_AverageAnnualReturnSinceInception 1.16% [96]
Inception Date rr_AverageAnnualReturnInceptionDate Dec. 18, 2017 [96]
Treasury Obligations Fund | Class P Shares | Risk Lose Money [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock You could lose money by investing in the fund.
Treasury Obligations Fund | Class P Shares | Credit Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Credit Risk — The value of your investment might decline if the issuer of an obligation held by the fund defaults on the obligation or has its credit rating downgraded.

Treasury Obligations Fund | Class P Shares | Interest Rate Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Interest Rate Risk — The value of your investment might decline because of a sharp rise in interest rates that causes the value of the fund’s portfolio holdings to fall. During periods when interest rates are low or there are negative interest rates, the fund’s yield (and total return) also may be low or the fund may be unable to maintain positive returns.

Treasury Obligations Fund | Class P Shares | Market Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Market Risk — Market volatility, dramatic changes to interest rates, and otherwise unfavorable economic conditions resulting from major cybersecurity events, geopolitical events (including wars, such as Russia’s invasion of Ukraine, tensions in the Middle East, terror attacks, and disruptions to foreign economic and trade relationships), public health emergencies, among other events, may negatively impact the fund’s performance or impair the fund’s ability to achieve its investment objective.

Treasury Obligations Fund | Class P Shares | Liquidity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Liquidity Risk — The fund may not be able to sell a security in a timely manner or at a desired price, or may be unable to sell the security at all, because of a lack of demand in the market for the security.

Treasury Obligations Fund | Class P Shares | Redemption Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Redemption Risk — If there are unexpectedly high redemptions of fund shares, the fund might have to sell portfolio securities prior to their maturity, possibly at a loss.

Treasury Obligations Fund | Class P Shares | Repurchase Agreement Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Repurchase Agreement Risk — If the seller of a repurchase agreement defaults on its obligation to repurchase securities from the fund, the fund may incur costs in disposing of the collateral and may experience losses if there is any delay in its ability to do so.

Treasury Obligations Fund | Class P Shares | Income Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Income Risk — The level of income you receive from the fund will be affected by movements in short-term interest rates.

Treasury Obligations Fund | Class P Shares | Cybersecurity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Cybersecurity Risk — The fund may be subject to operational and informational security risks resulting from breaches in cybersecurity at the fund, the fund’s affiliates or service providers. A cybersecurity breach at an issuer of securities in which the fund invests may cause such securities to lose value.

Treasury Obligations Fund | Class P Shares | Regulatory Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Regulatory Risk — Changes to monetary policy by the Federal Reserve or other regulatory actions may impact the fund’s operations, universe of potential investment options, and return potential.

Treasury Obligations Fund | Class T Shares  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol FTTXX
Risk/Return [Heading] rr_RiskReturnHeading Treasury Obligations Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Treasury Obligations Fund’s objective is to seek maximum current income consistent with the preservation of capital and maintenance of liquidity.

Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following tables describe the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Maximum Cumulative Sales Charge (as a percentage of Offering Price) rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.10%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Component1 Other Expenses rr_Component1OtherExpensesOverAssets 0.20%
Component2 Other Expenses rr_Component2OtherExpensesOverAssets 0.10%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.40%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets none [97]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.40% [97]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2024
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

Example: This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and the fund’s operating expenses remain the same (except that the example incorporates the fund’s expense limitation arrangements for only the first year of each period presented). You would incur these hypothetical expenses whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 41
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 128
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 224
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 505
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Under normal market conditions, Treasury Obligations Fund invests exclusively in short-term U.S. Treasury obligations, including repurchase agreements secured by U.S. Treasury obligations. The U.S. Treasury obligations in which the fund invests include U.S. Treasury bonds, notes, and bills. These types of Treasury securities are essentially the same except for differences in interest rates, maturities, and dates of issuance. U.S. Treasury obligations are backed by the full faith and credit of the U.S. government.

Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the potential risks of investing in the fund. The fund’s past performance is not necessarily an indication of how the fund will perform in the future. Updated performance information is available online at firstamericanfunds.com or by calling 800 677-3863.

 

The bar chart shows the fund’s Class T performance for the period indicated. The table illustrates the fund’s average annual total returns over the time periods indicated. The bar chart does not reflect sales loads as none are applicable to Class T shares.

 

The performance shown in the bar chart and performance table is the performance of the fund’s predecessor entity, Treasury Obligations Fund, a series of First American Funds, Inc. (the “Predecessor Fund”), prior to the commencement of the fund’s operations. On December 22, 2023 the fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, the fund adopted the performance and financial history of the Predecessor Fund. The fund has the same investment objective, strategy, risks and investment adviser as the Predecessor Fund. As a result, the performance of the fund would have been substantially similar to that of the Predecessor Fund.

  

The bar chart shows the performance of the Predecessor Fund’s Class T shares which was adopted by the Class T shares of the fund for periods prior to the Reorganization. If the Predecessor Fund’s investment adviser had not waived or reimbursed certain Predecessor Fund expenses during these periods, the Predecessor Fund’s returns would have been lower.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart shows the fund’s Class T performance for the period indicated.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 677-3863
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress firstamericanfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund’s past performance is not necessarily an indication of how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading ANNUAL TOTAL RETURNS AS OF 12/31 EACH YEAR
Annual Return 2021 rr_AnnualReturn2021 0.01% [98]
Annual Return 2022 rr_AnnualReturn2022 1.37% [98]
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Best Quarter: Quarter ended December 31, 2022 0.83%
Worst Quarter: Quarter ended March 31, 2022* 0.00%

*   Most recent quarter with this return during the period of the chart.
Year to Date Return, Label rr_YearToDateReturnLabel Total return for the period 1/1/2023 through 9/30/2023
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2023
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 3.48%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2022
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 0.83%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2022 [99]
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn none
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS AS OF 12/31/22
1 Year rr_AverageAnnualReturnYear01 1.37% [100]
Since Inception rr_AverageAnnualReturnSinceInception 0.60% [100]
Inception Date rr_AverageAnnualReturnInceptionDate Sep. 18, 2020 [100]
Treasury Obligations Fund | Class T Shares | Risk Lose Money [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock You could lose money by investing in the fund.
Treasury Obligations Fund | Class T Shares | Credit Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Credit Risk — The value of your investment might decline if the issuer of an obligation held by the fund defaults on the obligation or has its credit rating downgraded.

Treasury Obligations Fund | Class T Shares | Interest Rate Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Interest Rate Risk — The value of your investment might decline because of a sharp rise in interest rates that causes the value of the fund’s portfolio holdings to fall. During periods when interest rates are low or there are negative interest rates, the fund’s yield (and total return) also may be low or the fund may be unable to maintain positive returns.

Treasury Obligations Fund | Class T Shares | Market Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Market Risk — Market volatility, dramatic changes to interest rates, and otherwise unfavorable economic conditions resulting from major cybersecurity events, geopolitical events (including wars, such as Russia’s invasion of Ukraine, tensions in the Middle East, terror attacks, and disruptions to foreign economic and trade relationships), public health emergencies, among other events, may negatively impact the fund’s performance or impair the fund’s ability to achieve its investment objective.

Treasury Obligations Fund | Class T Shares | Liquidity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Liquidity Risk — The fund may not be able to sell a security in a timely manner or at a desired price, or may be unable to sell the security at all, because of a lack of demand in the market for the security.

Treasury Obligations Fund | Class T Shares | Redemption Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Redemption Risk — If there are unexpectedly high redemptions of fund shares, the fund might have to sell portfolio securities prior to their maturity, possibly at a loss.

Treasury Obligations Fund | Class T Shares | Repurchase Agreement Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Repurchase Agreement Risk — If the seller of a repurchase agreement defaults on its obligation to repurchase securities from the fund, the fund may incur costs in disposing of the collateral and may experience losses if there is any delay in its ability to do so.

Treasury Obligations Fund | Class T Shares | Income Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Income Risk — The level of income you receive from the fund will be affected by movements in short-term interest rates. 

Treasury Obligations Fund | Class T Shares | Cybersecurity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Cybersecurity Risk — The fund may be subject to operational and informational security risks resulting from breaches in cybersecurity at the fund, the fund’s affiliates or service providers. A cybersecurity breach at an issuer of securities in which the fund invests may cause such securities to lose value.

Treasury Obligations Fund | Class T Shares | Regulatory Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Regulatory Risk — Changes to monetary policy by the Federal Reserve or other regulatory actions may impact the fund’s operations, universe of potential investment options, and return potential.

Treasury Obligations Fund | Class V Shares  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol FLIXX
Risk/Return [Heading] rr_RiskReturnHeading Treasury Obligations Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Treasury Obligations Fund’s objective is to seek maximum current income consistent with the preservation of capital and maintenance of liquidity.

Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following tables describe the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Maximum Cumulative Sales Charge (as a percentage of Offering Price) rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.10%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Component1 Other Expenses rr_Component1OtherExpensesOverAssets 0.10%
Component2 Other Expenses rr_Component2OtherExpensesOverAssets 0.10%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.30%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets none [101]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.30% [101]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2024
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

Example: This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and the fund’s operating expenses remain the same (except that the example incorporates the fund’s expense limitation arrangements for only the first year of each period presented). You would incur these hypothetical expenses whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 31
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 97
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 169
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 381
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Under normal market conditions, Treasury Obligations Fund invests exclusively in short-term U.S. Treasury obligations, including repurchase agreements secured by U.S. Treasury obligations. The U.S. Treasury obligations in which the fund invests include U.S. Treasury bonds, notes, and bills. These types of Treasury securities are essentially the same except for differences in interest rates, maturities, and dates of issuance. U.S. Treasury obligations are backed by the full faith and credit of the U.S. government.

Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the potential risks of investing in the fund. The fund’s past performance is not necessarily an indication of how the fund will perform in the future. Updated performance information is available online at www.firstamericanfunds.com or by calling 800 677-3863.

 

The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.

 

The performance shown in the bar chart and performance table is the performance of the fund’s predecessor entity, Treasury Obligations Fund, a series of First American Funds, Inc. (the “Predecessor Fund”), prior to the commencement of the fund’s operations. On December 22, 2023 the fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, the fund adopted the performance and financial history of the Predecessor Fund. The fund has the same investment objective, strategy, risks and investment adviser as the Predecessor Fund. As a result, the performance of the fund would have been substantially similar to that of the Predecessor Fund.

 

The bar chart shows the performance of the Predecessor Fund’s Class V shares which was adopted by the Class V shares of the fund for periods prior to the Reorganization. If the Predecessor Fund’s investment adviser had not waived or reimbursed certain Predecessor Fund expenses during these periods, the Predecessor Fund’s returns would have been lower.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 677-3863
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.firstamericanfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund’s past performance is not necessarily an indication of how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading ANNUAL TOTAL RETURNS AS OF 12/31 EACH YEAR
Annual Return 2013 rr_AnnualReturn2013 none [102]
Annual Return 2014 rr_AnnualReturn2014 none [102]
Annual Return 2015 rr_AnnualReturn2015 none [102]
Annual Return 2016 rr_AnnualReturn2016 0.09% [102]
Annual Return 2017 rr_AnnualReturn2017 0.63% [102]
Annual Return 2018 rr_AnnualReturn2018 1.59% [102]
Annual Return 2019 rr_AnnualReturn2019 1.95% [102]
Annual Return 2020 rr_AnnualReturn2020 0.28% [102]
Annual Return 2021 rr_AnnualReturn2021 0.01% [102]
Annual Return 2022 rr_AnnualReturn2022 1.44% [102]
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Best Quarter: Quarter ended December 31, 2022 0.85%
Worst Quarter: Quarter ended December 31, 2021* 0.00%
*   Most recent quarter with this return during the period of the chart.
Year to Date Return, Label rr_YearToDateReturnLabel Total return for the period 1/1/2023 through 9/30/2023
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2023
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 3.55%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2022
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 0.85%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2021 [103]
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn none
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS AS OF 12/31/22
1 Year rr_AverageAnnualReturnYear01 1.44% [104]
5 Years rr_AverageAnnualReturnYear05 1.05% [104]
10 Years rr_AverageAnnualReturnYear10 0.60% [104]
Inception Date rr_AverageAnnualReturnInceptionDate Mar. 31, 2006 [104]
Treasury Obligations Fund | Class V Shares | Risk Lose Money [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock You could lose money by investing in the fund.
Treasury Obligations Fund | Class V Shares | Credit Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Credit Risk — The value of your investment might decline if the issuer of an obligation held by the fund defaults on the obligation or has its credit rating downgraded.

Treasury Obligations Fund | Class V Shares | Interest Rate Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Interest Rate Risk — The value of your investment might decline because of a sharp rise in interest rates that causes the value of the fund’s portfolio holdings to fall. During periods when interest rates are low or there are negative interest rates, the fund’s yield (and total return) also may be low or the fund may be unable to maintain positive returns.

Treasury Obligations Fund | Class V Shares | Market Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Market Risk — Market volatility, dramatic changes to interest rates, and otherwise unfavorable economic conditions resulting from major cybersecurity events, geopolitical events (including wars, such as Russia’s invasion of Ukraine, tensions in the Middle East, terror attacks, and disruptions to foreign economic and trade relationships), public health emergencies, among other events, may negatively impact the fund’s performance or impair the fund’s ability to achieve its investment objective.

Treasury Obligations Fund | Class V Shares | Liquidity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Liquidity Risk — The fund may not be able to sell a security in a timely manner or at a desired price, or may be unable to sell the security at all, because of a lack of demand in the market for the security.

Treasury Obligations Fund | Class V Shares | Redemption Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Redemption Risk — If there are unexpectedly high redemptions of fund shares, the fund might have to sell portfolio securities prior to their maturity, possibly at a loss.

Treasury Obligations Fund | Class V Shares | Repurchase Agreement Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Repurchase Agreement Risk — If the seller of a repurchase agreement defaults on its obligation to repurchase securities from the fund, the fund may incur costs in disposing of the collateral and may experience losses if there is any delay in its ability to do so.

Treasury Obligations Fund | Class V Shares | Income Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Income Risk — The level of income you receive from the fund will be affected by movements in short-term interest rates. 

Treasury Obligations Fund | Class V Shares | Cybersecurity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Cybersecurity Risk — The fund may be subject to operational and informational security risks resulting from breaches in cybersecurity at the fund, the fund’s affiliates or service providers.

A cybersecurity breach at an issuer of securities in which the fund invests may cause such securities to lose value.

Treasury Obligations Fund | Class V Shares | Regulatory Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Regulatory Risk — Changes to monetary policy by the Federal Reserve or other regulatory actions may impact the fund’s operations, universe of potential investment options, and return potential.

Treasury Obligations Fund | Class X Shares  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol FXFXX
Risk/Return [Heading] rr_RiskReturnHeading Treasury Obligations Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Treasury Obligations Fund’s objective is to seek maximum current income consistent with the preservation of capital and maintenance of liquidity.

Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following tables describe the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Maximum Cumulative Sales Charge (as a percentage of Offering Price) rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.10%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets 0.10%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.20%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.06%) [105]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.14% [105]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2024
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

Example: This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and the fund’s operating expenses remain the same (except that the example incorporates the fund’s expense limitation arrangements for only the first year of each period presented). You would incur these hypothetical expenses whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 14
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 58
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 107
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 249
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Under normal market conditions, Treasury Obligations Fund invests exclusively in short-term U.S. Treasury obligations, including repurchase agreements secured by U.S. Treasury obligations. The U.S. Treasury obligations in which the fund invests include U.S. Treasury bonds, notes, and bills. These types of Treasury securities are essentially the same except for differences in interest rates, maturities, and dates of issuance. U.S. Treasury obligations are backed by the full faith and credit of the U.S. government.

Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the potential risks of investing in the fund. The fund’s past performance is not necessarily an indication of how the fund will perform in the future. Updated performance information is available online at www.firstamericanfunds.com or by calling 800 677-3863.

 

The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.

 

The performance shown in the bar chart and performance table is the performance of the fund’s predecessor entity, Treasury Obligations Fund, a series of First American Funds, Inc. (the “Predecessor Fund”), prior to the commencement of the fund’s operations. On December 22, 2023 the fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, the fund adopted the performance and financial history of the Predecessor Fund. The fund has the same investment objective, strategy, risks and investment adviser as the Predecessor Fund. As a result, the performance of the fund would have been substantially similar to that of the Predecessor Fund.

 

The bar chart shows the performance of the Predecessor Fund’s Class X shares which was adopted by the Class X shares of the fund for periods prior to the Reorganization. If the Predecessor Fund’s investment adviser had not waived or reimbursed certain Predecessor Fund expenses during these periods, the Predecessor Fund’s returns would have been lower.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 677-3863
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.firstamericanfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund’s past performance is not necessarily an indication of how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading ANNUAL TOTAL RETURNS AS OF 12/31 EACH YEAR
Annual Return 2017 rr_AnnualReturn2017 0.79% [106]
Annual Return 2018 rr_AnnualReturn2018 1.75% [106]
Annual Return 2019 rr_AnnualReturn2019 2.11% [106]
Annual Return 2020 rr_AnnualReturn2020 0.38% [106]
Annual Return 2021 rr_AnnualReturn2021 0.02% [106]
Annual Return 2022 rr_AnnualReturn2022 1.57% [106]
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Best Quarter: Quarter ended December 31, 2022 0.90%
Worst Quarter: Quarter ended December 31, 2021* 0.00%

*   Most recent quarter with this return during the period of the chart.

Year to Date Return, Label rr_YearToDateReturnLabel Total return for the period 1/1/2023 through 9/30/2023
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2023
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 3.68%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2022
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 0.90%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2021 [107]
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn none
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS AS OF 12/31/22
1 Year rr_AverageAnnualReturnYear01 1.57% [108]
5 Years rr_AverageAnnualReturnYear05 1.16% [108]
10 Years rr_AverageAnnualReturnYear10 1.01% [108]
Inception Date rr_AverageAnnualReturnInceptionDate Apr. 05, 2016 [108]
Treasury Obligations Fund | Class X Shares | Risk Lose Money [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock You could lose money by investing in the fund.
Treasury Obligations Fund | Class X Shares | Credit Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Credit Risk — The value of your investment might decline if the issuer of an obligation held by the fund defaults on the obligation or has its credit rating downgraded.

Treasury Obligations Fund | Class X Shares | Interest Rate Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Interest Rate Risk — The value of your investment might decline because of a sharp rise in interest rates that causes the value of the fund’s portfolio holdings to fall. During periods when interest rates are low or there are negative interest rates, the fund’s yield (and total return) also may be low or the fund may be unable to maintain positive returns.

Treasury Obligations Fund | Class X Shares | Market Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Market Risk — Market volatility, dramatic changes to interest rates, and otherwise unfavorable economic conditions resulting from major cybersecurity events, geopolitical events (including wars, such as Russia’s invasion of Ukraine, tensions in the Middle East, terror attacks, and disruptions to foreign economic and trade relationships), public health emergencies, among other events, may negatively impact the fund’s performance or impair the fund’s ability to achieve its investment objective.

Treasury Obligations Fund | Class X Shares | Liquidity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Liquidity Risk — The fund may not be able to sell a security in a timely manner or at a desired price, or may be unable to sell the security at all, because of a lack of demand in the market for the security.

Treasury Obligations Fund | Class X Shares | Redemption Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Redemption Risk — If there are unexpectedly high redemptions of fund shares, the fund might have to sell portfolio securities prior to their maturity, possibly at a loss.

Treasury Obligations Fund | Class X Shares | Repurchase Agreement Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Repurchase Agreement Risk — If the seller of a repurchase agreement defaults on its obligation to repurchase securities from the fund, the fund may incur costs in disposing of the collateral and may experience losses if there is any delay in its ability to do so.

Treasury Obligations Fund | Class X Shares | Income Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Income Risk — The level of income you receive from the fund will be affected by movements in short-term interest rates. 

Treasury Obligations Fund | Class X Shares | Cybersecurity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Cybersecurity Risk — The fund may be subject to operational and informational security risks resulting from breaches in cybersecurity at the fund, the fund’s affiliates or service providers.

A cybersecurity breach at an issuer of securities in which the fund invests may cause such securities to lose value.

Treasury Obligations Fund | Class X Shares | Regulatory Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Regulatory Risk — Changes to monetary policy by the Federal Reserve or other regulatory actions may impact the fund’s operations, universe of potential investment options, and return potential.

Treasury Obligations Fund | Class Y Shares  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol FOCXX
Risk/Return [Heading] rr_RiskReturnHeading Treasury Obligations Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Treasury Obligations Fund’s objective is to seek maximum current income consistent with the preservation of capital and maintenance of liquidity.

Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following tables describe the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Maximum Cumulative Sales Charge (as a percentage of Offering Price) rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.10%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Component1 Other Expenses rr_Component1OtherExpensesOverAssets 0.25%
Component2 Other Expenses rr_Component2OtherExpensesOverAssets 0.10%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.45%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets none [109]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.45% [109]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2024
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

Example: This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and the fund’s operating expenses remain the same (except that the example incorporates the fund’s expense limitation arrangements for only the first year of each period presented). You would incur these hypothetical expenses whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 46
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 144
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 252
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 567
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Under normal market conditions, Treasury Obligations Fund invests exclusively in short-term U.S. Treasury obligations, including repurchase agreements secured by U.S. Treasury obligations. The U.S. Treasury obligations in which the fund invests include U.S. Treasury bonds, notes, and bills. These types of Treasury securities are essentially the same except for differences in interest rates, maturities, and dates of issuance. U.S. Treasury obligations are backed by the full faith and credit of the U.S. government.

Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the potential risks of investing in the fund. The fund’s past performance is not necessarily an indication of how the fund will perform in the future. Updated performance information is available online at www.firstamericanfunds.com or by calling 800 677-3863.

 

The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.

 

The performance shown in the bar chart and performance table is the performance of the fund’s predecessor entity, Treasury Obligations Fund, a series of First American Funds, Inc. (the “Predecessor Fund”), prior to the commencement of the fund’s operations. On December 22, 2023 the fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, the fund adopted the performance and financial history of the Predecessor Fund. The fund has the same investment objective, strategy, risks and investment adviser as the Predecessor Fund. As a result, the performance of the fund would have been substantially similar to that of the Predecessor Fund.

 

The bar chart shows the performance of the Predecessor Fund’s Class Y shares which was adopted by the Class Y shares of the fund for periods prior to the Reorganization. If the Predecessor Fund’s investment adviser had not waived or reimbursed certain Predecessor Fund expenses during these periods, the Predecessor Fund’s returns would have been lower.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart shows you the variability of the fund’s performance from year to year.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 677-3863
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.firstamericanfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund’s past performance is not necessarily an indication of how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading ANNUAL TOTAL RETURNS AS OF 12/31 EACH YEAR
Annual Return 2013 rr_AnnualReturn2013 none [110]
Annual Return 2014 rr_AnnualReturn2014 none [110]
Annual Return 2015 rr_AnnualReturn2015 none [110]
Annual Return 2016 rr_AnnualReturn2016 0.01% [110]
Annual Return 2017 rr_AnnualReturn2017 0.48% [110]
Annual Return 2018 rr_AnnualReturn2018 1.44% [110]
Annual Return 2019 rr_AnnualReturn2019 1.80% [110]
Annual Return 2020 rr_AnnualReturn2020 0.24% [110]
Annual Return 2021 rr_AnnualReturn2021 0.01% [110]
Annual Return 2022 rr_AnnualReturn2022 1.33% [110]
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Best Quarter: Quarter ended December 31, 2022 0.82%
     
Worst Quarter: Quarter ended March 31, 2022* 0.00%
     
* Most recent quarter with this return during the period of the chart.
Year to Date Return, Label rr_YearToDateReturnLabel Total return for the period 1/1/2023 through 9/30/2023
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2023
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 3.44%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2022
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 0.82%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2022 [111]
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn none
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS AS OF 12/31/22
1 Year rr_AverageAnnualReturnYear01 1.33% [112]
5 Years rr_AverageAnnualReturnYear05 0.91% [112]
10 Years rr_AverageAnnualReturnYear10 0.53% [112]
Inception Date rr_AverageAnnualReturnInceptionDate Jan. 24, 1995 [112]
Treasury Obligations Fund | Class Y Shares | Risk Lose Money [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock You could lose money by investing in the fund.
Treasury Obligations Fund | Class Y Shares | Credit Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Credit Risk — The value of your investment might decline if the issuer of an obligation held by the fund defaults on the obligation or has its credit rating downgraded.

Treasury Obligations Fund | Class Y Shares | Interest Rate Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Interest Rate Risk — The value of your investment might decline because of a sharp rise in interest rates that causes the value of the fund’s portfolio holdings to fall. During periods when interest rates are low or there are negative interest rates, the fund’s yield (and total return) also may be low or the fund may be unable to maintain positive returns.

Treasury Obligations Fund | Class Y Shares | Market Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Market Risk — Market volatility, dramatic changes to interest rates, and otherwise unfavorable economic conditions resulting from major cybersecurity events, geopolitical events (including wars, such as Russia’s invasion of Ukraine, tensions in the Middle East, terror attacks, and disruptions to foreign economic and trade relationships), public health emergencies, among other events, may negatively impact the fund’s performance or impair the fund’s ability to achieve its investment objective.

Treasury Obligations Fund | Class Y Shares | Liquidity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Liquidity Risk — The fund may not be able to sell a security in a timely manner or at a desired price, or may be unable to sell the security at all, because of a lack of demand in the market for the security.

Treasury Obligations Fund | Class Y Shares | Redemption Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Redemption Risk — If there are unexpectedly high redemptions of fund shares, the fund might have to sell portfolio securities prior to their maturity, possibly at a loss.

Treasury Obligations Fund | Class Y Shares | Repurchase Agreement Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Repurchase Agreement Risk — If the seller of a repurchase agreement defaults on its obligation to repurchase securities from the fund, the fund may incur costs in disposing of the collateral and may experience losses if there is any delay in its ability to do so.

Treasury Obligations Fund | Class Y Shares | Income Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Income Risk — The level of income you receive from the fund will be affected by movements in short-term interest rates.

Treasury Obligations Fund | Class Y Shares | Cybersecurity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Cybersecurity Risk — The fund may be subject to operational and informational security risks resulting from breaches in cybersecurity at the fund, the fund’s affiliates or service providers. A cybersecurity breach at an issuer of securities in which the fund invests may cause such securities to lose value.

Treasury Obligations Fund | Class Y Shares | Regulatory Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Regulatory Risk — Changes to monetary policy by the Federal Reserve or other regulatory actions may impact the fund’s operations, universe of potential investment options, and return potential.

Treasury Obligations Fund | Class Z Shares  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol FUZXX
Risk/Return [Heading] rr_RiskReturnHeading Treasury Obligations Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Treasury Obligations Fund’s objective is to seek maximum current income consistent with the preservation of capital and maintenance of liquidity.

Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following tables describe the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Maximum Cumulative Sales Charge (as a percentage of Offering Price) rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.10%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets 0.10%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.20%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.02%) [113]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.18% [113]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2024
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

Example: This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and the fund’s operating expenses remain the same (except that the example incorporates the fund’s expense limitation arrangements for only the first year of each period presented). You would incur these hypothetical expenses whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 18
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 62
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 111
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 253
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Under normal market conditions, Treasury Obligations Fund invests exclusively in short-term U.S. Treasury obligations, including repurchase agreements secured by U.S. Treasury obligations. The U.S. Treasury obligations in which the fund invests include U.S. Treasury bonds, notes, and bills. These types of Treasury securities are essentially the same except for differences in interest rates, maturities, and dates of issuance. U.S. Treasury obligations are backed by the full faith and credit of the U.S. government.

Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the potential risks of investing in the fund. The fund’s past performance is not necessarily an indication of how the fund will perform in the future. Updated performance information is available online at www.firstamericanfunds.com or by calling 800 677-3863.

 

The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.

 

The performance shown in the bar chart and performance table is the performance of the fund’s predecessor entity, Treasury Obligations Fund, a series of First American Funds, Inc. (the “Predecessor Fund”), prior to the commencement of the fund’s operations. On December 22, 2023 the fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, the fund adopted the performance and financial history of the Predecessor Fund. The fund has the same investment objective, strategy, risks and investment adviser as the Predecessor Fund. As a result, the performance of the fund would have been substantially similar to that of the Predecessor Fund.

 

The bar chart shows the performance of the Predecessor Fund’s Class Z shares which was adopted by the Class Z shares of the fund for periods prior to the Reorganization. If the Predecessor Fund’s investment adviser had not waived or reimbursed certain Predecessor Fund expenses during these periods, the Predecessor Fund’s returns would have been lower.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart shows you the variability of the fund’s performance from year to year.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 677-3863
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.firstamericanfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund’s past performance is not necessarily an indication of how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading ANNUAL TOTAL RETURNS AS OF 12/31 EACH YEAR
Annual Return 2013 rr_AnnualReturn2013 none [114]
Annual Return 2014 rr_AnnualReturn2014 none [114]
Annual Return 2015 rr_AnnualReturn2015 none [114]
Annual Return 2016 rr_AnnualReturn2016 0.20% [114]
Annual Return 2017 rr_AnnualReturn2017 0.75% [114]
Annual Return 2018 rr_AnnualReturn2018 1.71% [114]
Annual Return 2019 rr_AnnualReturn2019 2.07% [114]
Annual Return 2020 rr_AnnualReturn2020 0.35% [114]
Annual Return 2021 rr_AnnualReturn2021 0.02% [114]
Annual Return 2022 rr_AnnualReturn2022 1.54% [114]
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Best Quarter: Quarter ended December 31, 2022 0.89%
Worst Quarter: Quarter ended December 31, 2021* 0.00%
*   Most recent quarter with this return during the period of the chart.
Year to Date Return, Label rr_YearToDateReturnLabel Total return for the period 1/1/2023 through 9/30/2023
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2023
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 3.65%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2022
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 0.89%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2021 [115]
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn none
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS AS OF 12/31/22
1 Year rr_AverageAnnualReturnYear01 1.54% [116]
5 Years rr_AverageAnnualReturnYear05 1.13% [116]
10 Years rr_AverageAnnualReturnYear10 0.66% [116]
Inception Date rr_AverageAnnualReturnInceptionDate Dec. 01, 2003 [116]
Treasury Obligations Fund | Class Z Shares | Risk Lose Money [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock You could lose money by investing in the fund.
Treasury Obligations Fund | Class Z Shares | Credit Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Credit Risk — The value of your investment might decline if the issuer of an obligation held by the fund defaults on the obligation or has its credit rating downgraded.

Treasury Obligations Fund | Class Z Shares | Interest Rate Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Interest Rate Risk — The value of your investment might decline because of a sharp rise in interest rates that causes the value of the fund’s portfolio holdings to fall. During periods when interest rates are low or there are negative interest rates, the fund’s yield (and total return) also may be low or the fund may be unable to maintain positive returns.

Treasury Obligations Fund | Class Z Shares | Market Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Market Risk — Market volatility, dramatic changes to interest rates, and otherwise unfavorable economic conditions resulting from major cybersecurity events, geopolitical events (including wars, such as Russia’s invasion of Ukraine, tensions in the Middle East, terror attacks, and disruptions to foreign economic and trade relationships), public health emergencies, among other events, may negatively impact the fund’s performance or impair the fund’s ability to achieve its investment objective.

Treasury Obligations Fund | Class Z Shares | Liquidity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Liquidity Risk — The fund may not be able to sell a security in a timely manner or at a desired price, or may be unable to sell the security at all, because of a lack of demand in the market for the security.

Treasury Obligations Fund | Class Z Shares | Redemption Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Redemption Risk — If there are unexpectedly high redemptions of fund shares, the fund might have to sell portfolio securities prior to their maturity, possibly at a loss.

Treasury Obligations Fund | Class Z Shares | Repurchase Agreement Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Repurchase Agreement Risk — If the seller of a repurchase agreement defaults on its obligation to repurchase securities from the fund, the fund may incur costs in disposing of the collateral and may experience losses if there is any delay in its ability to do so.

Treasury Obligations Fund | Class Z Shares | Income Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Income Risk — The level of income you receive from the fund will be affected by movements in short-term interest rates.

Treasury Obligations Fund | Class Z Shares | Cybersecurity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Cybersecurity Risk — The fund may be subject to operational and informational security risks resulting from breaches in cybersecurity at the fund, the fund’s affiliates or service providers. A cybersecurity breach at an issuer of securities in which the fund invests may cause such securities to lose value.

Treasury Obligations Fund | Class Z Shares | Regulatory Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Regulatory Risk — Changes to monetary policy by the Federal Reserve or other regulatory actions may impact the fund’s operations, universe of potential investment options, and return potential.

U.S. Treasury Money Market Fund | Class A Shares  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol FOEXX
Risk/Return [Heading] rr_RiskReturnHeading U.S. Treasury Money Market Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

U.S. Treasury Money Market Fund’s objective is to seek maximum current income consistent with the preservation of capital and maintenance of liquidity.

Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following tables describe the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Maximum Cumulative Sales Charge (as a percentage of Offering Price) rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Shareholder Fee, Other rr_ShareholderFeeOther $ 15
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.10%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Component1 Other Expenses rr_Component1OtherExpensesOverAssets 0.25%
Component2 Other Expenses rr_Component2OtherExpensesOverAssets 0.16%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.76%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.01%) [117]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.75% [117]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2024
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

Example: This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and the fund’s operating expenses remain the same (except that the example incorporates the fund’s expense limitation arrangements for only the first year of each period presented). You would incur these hypothetical expenses whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 77
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 242
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 421
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 941
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

U.S. Treasury Money Market Fund invests exclusively in direct obligations of the U.S. Treasury. The U.S. Treasury obligations in which the fund invests include U.S. Treasury bonds, notes, and bills. These types of Treasury securities are essentially the same except for differences in interest rates, maturities, and dates of issuance. U.S. Treasury obligations are backed by the full faith and credit of the U.S. government.

Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the potential risks of investing in the fund. The fund’s past performance is not necessarily an indication of how the fund will perform in the future. Updated performance information is available online at www.firstamericanfunds.com or by calling 800 677-3863.

 

The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.

 

The performance shown in the bar chart and performance table is the performance of the fund’s predecessor entity, U.S. Treasury Money Market Fund, a series of First American Funds, Inc. (the “Predecessor Fund”), prior to the commencement of the fund’s operations. On December 22, 2023 the fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, the fund adopted the performance and financial history of the Predecessor Fund. The fund has the same investment objective, strategy, risks and investment adviser as the Predecessor Fund. As a result, the performance of the fund would have been substantially similar to that of the Predecessor Fund.

 

The bar chart shows the performance of the Predecessor Fund’s Class A shares which was adopted by the Class A shares of the fund for periods prior to the Reorganization. If the Predecessor Fund’s investment adviser had not waived or reimbursed certain Predecessor Fund expenses during these periods, the Predecessor Fund’s returns would have been lower.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart shows you the variability of the fund’s performance from year to year.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 677-3863
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.firstamericanfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund’s past performance is not necessarily an indication of how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading ANNUAL TOTAL RETURNS AS OF 12/31 EACH YEAR
Annual Return 2013 rr_AnnualReturn2013 none [118]
Annual Return 2014 rr_AnnualReturn2014 none [118]
Annual Return 2015 rr_AnnualReturn2015 none [118]
Annual Return 2016 rr_AnnualReturn2016 none [118]
Annual Return 2017 rr_AnnualReturn2017 0.17% [118]
Annual Return 2018 rr_AnnualReturn2018 1.11% [118]
Annual Return 2019 rr_AnnualReturn2019 1.44% [118]
Annual Return 2020 rr_AnnualReturn2020 0.17% [118]
Annual Return 2021 rr_AnnualReturn2021 none [118]
Annual Return 2022 rr_AnnualReturn2022 1.02% [118]
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Best Quarter: Quarter ended December 31, 2022 0.71%
     
Worst Quarter: Quarter ended March 31, 2022* 0.00%
     
*   Most recent quarter with this return during the period of the chart.
Year to Date Return, Label rr_YearToDateReturnLabel Total return for the period 1/1/2023 through 9/30/2023
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2023
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 3.11%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2022
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 0.71%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2022 [119]
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn none
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS AS OF 12/31/22
1 Year rr_AverageAnnualReturnYear01 1.02% [120]
5 Years rr_AverageAnnualReturnYear05 0.75% [120]
10 Years rr_AverageAnnualReturnYear10 0.39% [120]
Inception Date rr_AverageAnnualReturnInceptionDate Oct. 25, 2004 [120]
U.S. Treasury Money Market Fund | Class A Shares | Risk Lose Money [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock You could lose money by investing in the fund.
U.S. Treasury Money Market Fund | Class A Shares | Credit Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Credit Risk — The value of your investment might decline if the issuer of an obligation held by the fund defaults on the obligation or has its credit rating downgraded.

U.S. Treasury Money Market Fund | Class A Shares | Interest Rate Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Interest Rate Risk — The value of your investment might decline because of a sharp rise in interest rates that causes the value of the fund’s portfolio holdings to fall. During periods when interest rates are low or there are negative interest rates, the fund’s yield (and total return) also may be low or the fund may be unable to maintain positive returns.

U.S. Treasury Money Market Fund | Class A Shares | Market Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Market Risk — Market volatility, dramatic changes to interest rates, and otherwise unfavorable economic conditions resulting from major cybersecurity events, geopolitical events (including wars, such as Russia’s invasion of Ukraine, tensions in the Middle East, terror attacks, and disruptions to foreign economic and trade relationships), public health emergencies, among other events, may negatively impact the fund’s performance or impair the fund’s ability to achieve its investment objective.

U.S. Treasury Money Market Fund | Class A Shares | Liquidity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Liquidity Risk — The fund may not be able to sell a security in a timely manner or at a desired price, or may be unable to sell the security at all, because of a lack of demand in the market for the security.

U.S. Treasury Money Market Fund | Class A Shares | Redemption Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Redemption Risk — If there are unexpectedly high redemptions of fund shares, the fund might have to sell portfolio securities prior to their maturity, possibly at a loss.

U.S. Treasury Money Market Fund | Class A Shares | Income Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Income Risk — The level of income you receive from the fund will be affected by movements in short-term interest rates.

U.S. Treasury Money Market Fund | Class A Shares | Cybersecurity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Cybersecurity Risk — The fund may be subject to operational and informational security risks resulting from breaches in cybersecurity at the fund, the fund’s affiliates or service providers. A cybersecurity breach at an issuer of securities in which the fund invests may cause such securities to lose value.

U.S. Treasury Money Market Fund | Class A Shares | Regulatory Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Regulatory Risk — Changes to monetary policy by the Federal Reserve or other regulatory actions may impact the fund’s operations, universe of potential investment options, and return potential.

U.S. Treasury Money Market Fund | Class D Shares  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol FODXX
Risk/Return [Heading] rr_RiskReturnHeading U.S. Treasury Money Market Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

U.S. Treasury Money Market Fund’s objective is to seek maximum current income consistent with the preservation of capital and maintenance of liquidity.

Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following tables describe the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Maximum Cumulative Sales Charge (as a percentage of Offering Price) rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.10%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.15%
Component1 Other Expenses rr_Component1OtherExpensesOverAssets 0.25%
Component2 Other Expenses rr_Component2OtherExpensesOverAssets 0.11%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.61%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.01%) [121]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.60% [121]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2024
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

Example: This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and the fund’s operating expenses remain the same (except that the example incorporates the fund’s expense limitation arrangements for only the first year of each period presented). You would incur these hypothetical expenses whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 61
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 194
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 339
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 761
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

U.S. Treasury Money Market Fund invests exclusively in direct obligations of the U.S. Treasury. The U.S. Treasury obligations in which the fund invests include U.S. Treasury bonds, notes, and bills. These types of Treasury securities are essentially the same except for differences in interest rates, maturities, and dates of issuance. U.S. Treasury obligations are backed by the full faith and credit of the U.S. government.

Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the potential risks of investing in the fund. The fund’s past performance is not necessarily an indication of how the fund will perform in the future. Updated performance information is available online at www.firstamericanfunds.com or by calling 800 677-3863.

 

The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.

 

The performance shown in the bar chart and performance table is the performance of the fund’s predecessor entity, U.S. Treasury Money Market Fund, a series of First American Funds, Inc. (the “Predecessor Fund”), prior to the commencement of the fund’s operations. On December 22, 2023 the fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, the fund adopted the performance and financial history of the Predecessor Fund. The fund has the same investment objective, strategy, risks and investment adviser as the Predecessor Fund. As a result, the performance of the fund would have been substantially similar to that of the Predecessor Fund.

  

The bar chart shows the performance of the Predecessor Fund’s Class D shares which was adopted by the Class D shares of the fund for periods prior to the Reorganization. If the Predecessor Fund’s investment adviser had not waived or reimbursed certain Predecessor Fund expenses during these periods, the Predecessor Fund’s returns would have been lower.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart shows you the variability of the fund’s performance from year to year.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 677-3863
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.firstamericanfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund’s past performance is not necessarily an indication of how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading ANNUAL TOTAL RETURNS AS OF 12/31 EACH YEAR
Annual Return 2013 rr_AnnualReturn2013 none [122]
Annual Return 2014 rr_AnnualReturn2014 none [122]
Annual Return 2015 rr_AnnualReturn2015 none [122]
Annual Return 2016 rr_AnnualReturn2016 none [122]
Annual Return 2017 rr_AnnualReturn2017 0.29% [122]
Annual Return 2018 rr_AnnualReturn2018 1.26% [122]
Annual Return 2019 rr_AnnualReturn2019 1.59% [122]
Annual Return 2020 rr_AnnualReturn2020 0.21% [122]
Annual Return 2021 rr_AnnualReturn2021 none [122]
Annual Return 2022 rr_AnnualReturn2022 1.11% [122]
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Best Quarter: Quarter ended December 31, 2022 0.75%
Worst Quarter: Quarter ended March 31, 2022* 0.00%

*   Most recent quarter with this return during the period of the chart.

Year to Date Return, Label rr_YearToDateReturnLabel Total return for the period 1/1/2023 through 9/30/2023
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2023
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 3.23%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2022
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 0.75%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2022 [123]
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn none
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS AS OF 12/31/22
1 Year rr_AverageAnnualReturnYear01 1.11% [124]
5 Years rr_AverageAnnualReturnYear05 0.83% [124]
10 Years rr_AverageAnnualReturnYear10 0.44% [124]
Inception Date rr_AverageAnnualReturnInceptionDate Oct. 25, 2004 [124]
U.S. Treasury Money Market Fund | Class D Shares | Risk Lose Money [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock You could lose money by investing in the fund.
U.S. Treasury Money Market Fund | Class D Shares | Credit Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Credit Risk — The value of your investment might decline if the issuer of an obligation held by the fund defaults on the obligation or has its credit rating downgraded.

U.S. Treasury Money Market Fund | Class D Shares | Interest Rate Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Interest Rate Risk — The value of your investment might decline because of a sharp rise in interest rates that causes the value of the fund’s portfolio holdings to fall. During periods when interest rates are low or there are negative interest rates, the fund’s yield (and total return) also may be low or the fund may be unable to maintain positive returns.

U.S. Treasury Money Market Fund | Class D Shares | Market Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Market Risk — Market volatility, dramatic changes to interest rates, and otherwise unfavorable economic conditions resulting from major cybersecurity events, geopolitical events (including wars, such as Russia’s invasion of Ukraine, tensions in the Middle East, terror attacks, and disruptions to foreign economic and trade relationships), public health emergencies, among other events, may negatively impact the fund’s performance or impair the fund’s ability to achieve its investment objective.

U.S. Treasury Money Market Fund | Class D Shares | Liquidity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Liquidity Risk — The fund may not be able to sell a security in a timely manner or at a desired price, or may be unable to sell the security at all, because of a lack of demand in the market for the security.

U.S. Treasury Money Market Fund | Class D Shares | Redemption Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Redemption Risk — If there are unexpectedly high redemptions of fund shares, the fund might have to sell portfolio securities prior to their maturity, possibly at a loss.

U.S. Treasury Money Market Fund | Class D Shares | Income Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Income Risk — The level of income you receive from the fund will be affected by movements in short-term interest rates.

U.S. Treasury Money Market Fund | Class D Shares | Cybersecurity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Cybersecurity Risk — The fund may be subject to operational and informational security risks resulting from breaches in cybersecurity at the fund, the fund’s affiliates or service providers. A cybersecurity breach at an issuer of securities in which the fund invests may cause such securities to lose value.

U.S. Treasury Money Market Fund | Class D Shares | Regulatory Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Regulatory Risk — Changes to monetary policy by the Federal Reserve or other regulatory actions may impact the fund’s operations, universe of potential investment options, and return potential.

U.S. Treasury Money Market Fund | Class T Shares  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol FTKXX
Risk/Return [Heading] rr_RiskReturnHeading U.S. Treasury Money Market Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

U.S. Treasury Money Market Fund’s objective is to seek maximum current income consistent with the preservation of capital and maintenance of liquidity.

Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following tables describe the fees and expenses that you may pay if you buy, hold and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Maximum Cumulative Sales Charge (as a percentage of Offering Price) rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.10%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Component1 Other Expenses rr_Component1OtherExpensesOverAssets 0.20%
Component2 Other Expenses rr_Component2OtherExpensesOverAssets 0.11%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.41%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.01%) [125]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.40% [125]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2024
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

Example: This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and the fund’s operating expenses remain the same (except that the example incorporates the fund’s expense limitation arrangements for only the first year of each period presented). You would incur these hypothetical expenses whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 41
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 131
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 229
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 517
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

U.S. Treasury Money Market Fund invests exclusively in direct obligations of the U.S. Treasury. The U.S. Treasury obligations in which the fund invests include U.S. Treasury bonds, notes, and bills. These types of Treasury securities are essentially the same except for differences in interest rates, maturities, and dates of issuance. U.S. Treasury obligations are backed by the full faith and credit of the U.S. government.

Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the potential risks of investing in the fund. The fund’s past performance is not necessarily an indication of how the fund will perform in the future. Updated performance information is available online at firstamericanfunds.com or by calling 800 677-3863.

 

The bar chart shows the fund’s Class T performance for the period indicated. The table illustrates the fund’s average annual total returns over the time periods indicated. The bar chart does not reflect sales loads as none are applicable to Class T shares.

 

The performance shown in the bar chart and performance table is the performance of the fund’s predecessor entity, U.S. Treasury Money Market Fund, a series of First American Funds, Inc. (the “Predecessor Fund”), prior to the commencement of the fund’s operations. On December 22, 2023 the fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, the fund adopted the performance and financial history of the Predecessor Fund. The fund has the same investment objective, strategy, risks and investment adviser as the Predecessor Fund. As a result, the performance of the fund would have been substantially similar to that of the Predecessor Fund.

  

The bar chart shows the performance of the Predecessor Fund’s Class T shares which was adopted by the Class T shares of the fund for periods prior to the Reorganization. If the Predecessor Fund’s investment adviser had not waived or reimbursed certain Predecessor Fund expenses during these periods, the Predecessor Fund’s returns would have been lower.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart shows the fund’s Class T performance for the period indicated.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 677-3863
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress firstamericanfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund’s past performance is not necessarily an indication of how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading ANNUAL TOTAL RETURNS AS OF 12/31 EACH YEAR
Annual Return 2021 rr_AnnualReturn2021 none [126]
Annual Return 2022 rr_AnnualReturn2022 1.25% [126]
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Best Quarter: Quarter ended December 31, 2022 0.80%
Worst Quarter: Quarter ended March 31, 2022* 0.00%

*   Most recent quarter with this return during the period of the chart.
Year to Date Return, Label rr_YearToDateReturnLabel Total return for the period 1/1/2023 through 9/30/2023
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2023
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 3.38%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2022
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 0.80%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2022 [127]
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn none
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS AS OF 12/31/22
1 Year rr_AverageAnnualReturnYear01 1.25% [128]
Since Inception rr_AverageAnnualReturnSinceInception 0.55% [128]
Inception Date rr_AverageAnnualReturnInceptionDate Sep. 18, 2020 [128]
U.S. Treasury Money Market Fund | Class T Shares | Risk Lose Money [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock You could lose money by investing in the fund.
U.S. Treasury Money Market Fund | Class T Shares | Credit Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Credit Risk — The value of your investment might decline if the issuer of an obligation held by the fund defaults on the obligation or has its credit rating downgraded.

U.S. Treasury Money Market Fund | Class T Shares | Interest Rate Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Interest Rate Risk — The value of your investment might decline because of a sharp rise in interest rates that causes the value of the fund’s portfolio holdings to fall. During periods when interest rates are low or there are negative interest rates, the fund’s yield (and total return) also may be low or the fund may be unable to maintain positive returns.

U.S. Treasury Money Market Fund | Class T Shares | Market Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Market Risk — Market volatility, dramatic changes to interest rates, and otherwise unfavorable economic conditions resulting from major cybersecurity events, geopolitical events (including wars, such as Russia’s invasion of Ukraine, tensions in the Middle East, terror attacks, and disruptions to foreign economic and trade relationships), public health emergencies, among other events, may negatively impact the fund’s performance or impair the fund’s ability to achieve its investment objective.

U.S. Treasury Money Market Fund | Class T Shares | Liquidity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Liquidity Risk — The fund may not be able to sell a security in a timely manner or at a desired price, or may be unable to sell the security at all, because of a lack of demand in the market for the security.

U.S. Treasury Money Market Fund | Class T Shares | Redemption Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Redemption Risk — If there are unexpectedly high redemptions of fund shares, the fund might have to sell portfolio securities prior to their maturity, possibly at a loss.

U.S. Treasury Money Market Fund | Class T Shares | Income Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Income Risk — The level of income you receive from the fund will be affected by movements in short-term interest rates.

U.S. Treasury Money Market Fund | Class T Shares | Cybersecurity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Cybersecurity Risk — The fund may be subject to operational and informational security risks resulting from breaches in cybersecurity at the fund, the fund’s affiliates or service providers. A cybersecurity breach at an issuer of securities in which the fund invests may cause such securities to lose value.

U.S. Treasury Money Market Fund | Class T Shares | Regulatory Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Regulatory Risk — Changes to monetary policy by the Federal Reserve or other regulatory actions may impact the fund’s operations, universe of potential investment options, and return potential.

U.S. Treasury Money Market Fund | Class V Shares  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol FUIXX
Risk/Return [Heading] rr_RiskReturnHeading U.S. Treasury Money Market Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

U.S. Treasury Money Market Fund’s objective is to seek maximum current income consistent with the preservation of capital and maintenance of liquidity.

Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following tables describe the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Maximum Cumulative Sales Charge (as a percentage of Offering Price) rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.10%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Component1 Other Expenses rr_Component1OtherExpensesOverAssets 0.10%
Component2 Other Expenses rr_Component2OtherExpensesOverAssets 0.11%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.31%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.01%) [129]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.30% [129]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2024
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

Example: This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and the fund’s operating expenses remain the same (except that the example incorporates the fund’s expense limitation arrangements for only the first year of each period presented). You would incur these hypothetical expenses whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 31
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 99
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 173
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 392
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

U.S. Treasury Money Market Fund invests exclusively in direct obligations of the U.S. Treasury. The U.S. Treasury obligations in which the fund invests include U.S. Treasury bonds, notes, and bills. These types of Treasury securities are essentially the same except for differences in interest rates, maturities, and dates of issuance. U.S. Treasury obligations are backed by the full faith and credit of the U.S. government.

Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the potential risks of investing in the fund. The fund’s past performance is not necessarily an indication of how the fund will perform in the future. Updated performance information is available online at www.firstamericanfunds.com or by calling 800 677-3863.

 

The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.

 

The performance shown in the bar chart and performance table is the performance of the fund’s predecessor entity, U.S. Treasury Money Market Fund, a series of First American Funds, Inc. (the “Predecessor Fund”), prior to the commencement of the fund’s operations. On December 22, 2023 the fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, the fund adopted the performance and financial history of the Predecessor Fund. The fund has the same investment objective, strategy, risks and investment adviser as the Predecessor Fund. As a result, the performance of the fund would have been substantially similar to that of the Predecessor Fund.

 

The bar chart shows the performance of the Predecessor Fund’s Class V shares which was adopted by the Class V shares of the fund for periods prior to the Reorganization. If the Predecessor Fund’s investment adviser had not waived or reimbursed certain Predecessor Fund expenses during these periods, the Predecessor Fund’s returns would have been lower.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 677-3863
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.firstamericanfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund’s past performance is not necessarily an indication of how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading ANNUAL TOTAL RETURNS AS OF 12/31 EACH YEAR
Annual Return 2013 rr_AnnualReturn2013 none [130]
Annual Return 2014 rr_AnnualReturn2014 none [130]
Annual Return 2015 rr_AnnualReturn2015 none [130]
Annual Return 2016 rr_AnnualReturn2016 0.04% [130]
Annual Return 2017 rr_AnnualReturn2017 0.58% [130]
Annual Return 2018 rr_AnnualReturn2018 1.57% [130]
Annual Return 2019 rr_AnnualReturn2019 1.90% [130]
Annual Return 2020 rr_AnnualReturn2020 0.29% [130]
Annual Return 2021 rr_AnnualReturn2021 none [130]
Annual Return 2022 rr_AnnualReturn2022 1.33% [130]
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Best Quarter: Quarter ended December 31, 2022 0.83%
Worst Quarter: Quarter ended March 31, 2022* 0.00%
*   Most recent quarter with this return during the period of the chart.
Year to Date Return, Label rr_YearToDateReturnLabel Total return for the period 1/1/2023 through 9/30/2023
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2023
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 3.46%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2022
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 0.83%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2022 [131]
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn none
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS AS OF 12/31/22
1 Year rr_AverageAnnualReturnYear01 1.33% [132]
5 Years rr_AverageAnnualReturnYear05 1.01% [132]
10 Years rr_AverageAnnualReturnYear10 0.57% [132]
Inception Date rr_AverageAnnualReturnInceptionDate Mar. 31, 2006 [132]
U.S. Treasury Money Market Fund | Class V Shares | Risk Lose Money [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock You could lose money by investing in the fund.
U.S. Treasury Money Market Fund | Class V Shares | Credit Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Credit Risk — The value of your investment might decline if the issuer of an obligation held by the fund defaults on the obligation or has its credit rating downgraded.

U.S. Treasury Money Market Fund | Class V Shares | Interest Rate Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Interest Rate Risk — The value of your investment might decline because of a sharp rise in interest rates that causes the value of the fund’s portfolio holdings to fall. During periods when interest rates are low or there are negative interest rates, the fund’s yield (and total return) also may be low or the fund may be unable to maintain positive returns.

U.S. Treasury Money Market Fund | Class V Shares | Market Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Market Risk — Market volatility, dramatic changes to interest rates, and otherwise unfavorable economic conditions resulting from major cybersecurity events, geopolitical events (including wars, such as Russia’s invasion of Ukraine, tensions in the Middle East, terror attacks, and disruptions to foreign economic and trade relationships), public health emergencies, among other events, may negatively impact the fund’s performance or impair the fund’s ability to achieve its investment objective.

U.S. Treasury Money Market Fund | Class V Shares | Liquidity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Liquidity Risk — The fund may not be able to sell a security in a timely manner or at a desired price, or may be unable to sell the security at all, because of a lack of demand in the market for the security.

U.S. Treasury Money Market Fund | Class V Shares | Redemption Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Redemption Risk — If there are unexpectedly high redemptions of fund shares, the fund might have to sell portfolio securities prior to their maturity, possibly at a loss.

U.S. Treasury Money Market Fund | Class V Shares | Income Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Income Risk — The level of income you receive from the fund will be affected by movements in short-term interest rates.

U.S. Treasury Money Market Fund | Class V Shares | Cybersecurity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Cybersecurity Risk — The fund may be subject to operational and informational security risks resulting from breaches in cybersecurity at the fund, the fund’s affiliates or service providers. A cybersecurity breach at an issuer of securities in which the fund invests may cause such securities to lose value.

U.S. Treasury Money Market Fund | Class V Shares | Regulatory Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Regulatory Risk — Changes to monetary policy by the Federal Reserve or other regulatory actions may impact the fund’s operations, universe of potential investment options, and return potential.

U.S. Treasury Money Market Fund | Class Y Shares  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol FOYXX
Risk/Return [Heading] rr_RiskReturnHeading U.S. Treasury Money Market Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

U.S. Treasury Money Market Fund’s objective is to seek maximum current income consistent with the preservation of capital and maintenance of liquidity.

Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following tables describe the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Maximum Cumulative Sales Charge (as a percentage of Offering Price) rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.10%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Component1 Other Expenses rr_Component1OtherExpensesOverAssets 0.25%
Component2 Other Expenses rr_Component2OtherExpensesOverAssets 0.11%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.46%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.01%) [133]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.45% [133]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2024
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

Example: This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and the fund’s operating expenses remain the same (except that the example incorporates the fund’s expense limitation arrangements for only the first year of each period presented). You would incur these hypothetical expenses whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 46
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 147
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 257
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 578
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

U.S. Treasury Money Market Fund invests exclusively in direct obligations of the U.S. Treasury. The U.S. Treasury obligations in which the fund invests include U.S. Treasury bonds, notes, and bills. These types of Treasury securities are essentially the same except for differences in interest rates, maturities, and dates of issuance. U.S. Treasury obligations are backed by the full faith and credit of the U.S. government.

Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the potential risks of investing in the fund. The fund’s past performance is not necessarily an indication of how the fund will perform in the future. Updated performance information is available online at www.firstamericanfunds.com or by calling 800 677-3863.

 

The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.

 

The performance shown in the bar chart and performance table is the performance of the fund’s predecessor entity, U.S. Treasury Money Market Fund, a series of First American Funds, Inc. (the “Predecessor Fund”), prior to the commencement of the fund’s operations. On December 22, 2023 the fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, the fund adopted the performance and financial history of the Predecessor Fund. The fund has the same investment objective, strategy, risks and investment adviser as the Predecessor Fund. As a result, the performance of the fund would have been substantially similar to that of the Predecessor Fund.

 

The bar chart shows the performance of the Predecessor Fund’s Class Y shares which was adopted by the Class Y shares of the fund for periods prior to the Reorganization. If the Predecessor Fund’s investment adviser had not waived or reimbursed certain Predecessor Fund expenses during these periods, the Predecessor Fund’s returns would have been lower.

Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 677-3863
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.firstamericanfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund’s past performance is not necessarily an indication of how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading ANNUAL TOTAL RETURNS AS OF 12/31 EACH YEAR
Annual Return 2013 rr_AnnualReturn2013 none [134]
Annual Return 2014 rr_AnnualReturn2014 none [134]
Annual Return 2015 rr_AnnualReturn2015 none [134]
Annual Return 2016 rr_AnnualReturn2016 none [134]
Annual Return 2017 rr_AnnualReturn2017 0.43% [134]
Annual Return 2018 rr_AnnualReturn2018 1.42% [134]
Annual Return 2019 rr_AnnualReturn2019 1.75% [134]
Annual Return 2020 rr_AnnualReturn2020 0.25% [134]
Annual Return 2021 rr_AnnualReturn2021 none [134]
Annual Return 2022 rr_AnnualReturn2022 1.22% [134]
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Best Quarter: Quarter ended December 31, 2022 0.79%
     
Worst Quarter: Quarter ended March 31, 2022* 0.00%
     
* Most recent quarter with this return during the period of the chart.
Year to Date Return, Label rr_YearToDateReturnLabel Total return for the period 1/1/2023 through 9/30/2023
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2023
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 3.34%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2022
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 0.79%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2022 [135]
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn none
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS AS OF 12/31/22
1 Year rr_AverageAnnualReturnYear01 1.22% [136]
5 Years rr_AverageAnnualReturnYear05 0.92% [136]
10 Years rr_AverageAnnualReturnYear10 0.50% [136]
Inception Date rr_AverageAnnualReturnInceptionDate Oct. 25, 2004 [136]
U.S. Treasury Money Market Fund | Class Y Shares | Risk Lose Money [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock You could lose money by investing in the fund.
U.S. Treasury Money Market Fund | Class Y Shares | Credit Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Credit Risk — The value of your investment might decline if the issuer of an obligation held by the fund defaults on the obligation or has its credit rating downgraded.

U.S. Treasury Money Market Fund | Class Y Shares | Interest Rate Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Interest Rate Risk — The value of your investment might decline because of a sharp rise in interest rates that causes the value of the fund’s portfolio holdings to fall. During periods when interest rates are low or there are negative interest rates, the fund’s yield (and total return) also may be low or the fund may be unable to maintain positive returns.

U.S. Treasury Money Market Fund | Class Y Shares | Market Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Market Risk — Market volatility, dramatic changes to interest rates, and otherwise unfavorable economic conditions resulting from major cybersecurity events, geopolitical events (including wars, such as Russia’s invasion of Ukraine, tensions in the Middle East, terror attacks, and disruptions to foreign economic and trade relationships), public health emergencies, among other events, may negatively impact the fund’s performance or impair the fund’s ability to achieve its investment objective.

U.S. Treasury Money Market Fund | Class Y Shares | Liquidity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Liquidity Risk — The fund may not be able to sell a security in a timely manner or at a desired price, or may be unable to sell the security at all, because of a lack of demand in the market for the security.

U.S. Treasury Money Market Fund | Class Y Shares | Redemption Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Redemption Risk — If there are unexpectedly high redemptions of fund shares, the fund might have to sell portfolio securities prior to their maturity, possibly at a loss.

U.S. Treasury Money Market Fund | Class Y Shares | Income Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Income Risk — The level of income you receive from the fund will be affected by movements in short-term interest rates.

U.S. Treasury Money Market Fund | Class Y Shares | Cybersecurity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Cybersecurity Risk — The fund may be subject to operational and informational security risks resulting from breaches in cybersecurity at the fund, the fund’s affiliates or service providers. A cybersecurity breach at an issuer of securities in which the fund invests may cause such securities to lose value.

U.S. Treasury Money Market Fund | Class Y Shares | Regulatory Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Regulatory Risk — Changes to monetary policy by the Federal Reserve or other regulatory actions may impact the fund’s operations, universe of potential investment options, and return potential.

U.S. Treasury Money Market Fund | Class Z Shares  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol FOZXX
Risk/Return [Heading] rr_RiskReturnHeading U.S. Treasury Money Market Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

U.S. Treasury Money Market Fund’s objective is to seek maximum current income consistent with the preservation of capital and maintenance of liquidity.

Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following tables describe the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Maximum Cumulative Sales Charge (as a percentage of Offering Price) rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.10%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets 0.11%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.21%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.01%) [137]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.20% [137]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2024
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

Example: This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and the fund’s operating expenses remain the same (except that the example incorporates the fund’s expense limitation arrangements for only the first year of each period presented). You would incur these hypothetical expenses whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 20
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 67
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 117
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 267
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

U.S. Treasury Money Market Fund invests exclusively in direct obligations of the U.S. Treasury. The U.S. Treasury obligations in which the fund invests include U.S. Treasury bonds, notes, and bills. These types of Treasury securities are essentially the same except for differences in interest rates, maturities, and dates of issuance. U.S. Treasury obligations are backed by the full faith and credit of the U.S. government.

Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the potential risks of investing in the fund. The fund’s past performance is not necessarily an indication of how the fund will perform in the future. Updated performance information is available online at www.firstamericanfunds.com or by calling 800 677-3863.

 

The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.

 

The performance shown in the bar chart and performance table is the performance of the fund’s predecessor entity, U.S. Treasury Money Market Fund, a series of First American Funds, Inc. (the “Predecessor Fund”), prior to the commencement of the fund’s operations. On December 22, 2023 the fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, the fund adopted the performance and financial history of the Predecessor Fund. The fund has the same investment objective, strategy, risks and investment adviser as the Predecessor Fund. As a result, the performance of the fund would have been substantially similar to that of the Predecessor Fund.

  

The bar chart shows the performance of the Predecessor Fund’s Class Z shares which was adopted by the Class Z shares of the fund for periods prior to the Reorganization. If the Predecessor Fund’s investment adviser had not waived or reimbursed certain Predecessor Fund expenses during these periods, the Predecessor Fund’s returns would have been lower.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart shows you the variability of the fund’s performance from year to year.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 677-3863
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.firstamericanfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund’s past performance is not necessarily an indication of how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading ANNUAL TOTAL RETURNS AS OF 12/31 EACH YEAR
Annual Return 2013 rr_AnnualReturn2013 none [138]
Annual Return 2014 rr_AnnualReturn2014 none [138]
Annual Return 2015 rr_AnnualReturn2015 none [138]
Annual Return 2016 rr_AnnualReturn2016 0.13% [138]
Annual Return 2017 rr_AnnualReturn2017 0.68% [138]
Annual Return 2018 rr_AnnualReturn2018 1.67% [138]
Annual Return 2019 rr_AnnualReturn2019 2.00% [138]
Annual Return 2020 rr_AnnualReturn2020 0.35% [138]
Annual Return 2021 rr_AnnualReturn2021 0.01% [138]
Annual Return 2022 rr_AnnualReturn2022 1.41% [138]
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Best Quarter: Quarter ended December 31, 2022 0.85%
Worst Quarter: Quarter ended December 31, 2021* 0.00%
*   Most recent quarter with this return during the period of the chart.
Year to Date Return, Label rr_YearToDateReturnLabel Total return for the period 1/1/2023 through 9/30/2023
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2023
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 3.53%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2022
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 0.85%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2021 [139]
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn none
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS AS OF 12/31/22
1 Year rr_AverageAnnualReturnYear01 1.41% [140]
5 Years rr_AverageAnnualReturnYear05 1.08% [140]
10 Years rr_AverageAnnualReturnYear10 0.62% [140]
Inception Date rr_AverageAnnualReturnInceptionDate Oct. 25, 2004 [140]
U.S. Treasury Money Market Fund | Class Z Shares | Risk Lose Money [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock You could lose money by investing in the fund.
U.S. Treasury Money Market Fund | Class Z Shares | Credit Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Credit Risk — The value of your investment might decline if the issuer of an obligation held by the fund defaults on the obligation or has its credit rating downgraded.

U.S. Treasury Money Market Fund | Class Z Shares | Interest Rate Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Interest Rate Risk — The value of your investment might decline because of a sharp rise in interest rates that causes the value of the fund’s portfolio holdings to fall. During periods when interest rates are low or there are negative interest rates, the fund’s yield (and total return) also may be low or the fund may be unable to maintain positive returns.

U.S. Treasury Money Market Fund | Class Z Shares | Market Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Market Risk — Market volatility, dramatic changes to interest rates, and otherwise unfavorable economic conditions resulting from major cybersecurity events, geopolitical events (including wars, such as Russia’s invasion of Ukraine, tensions in the Middle East, terror attacks, and disruptions to foreign economic and trade relationships), public health emergencies, among other events, may negatively impact the fund’s performance or impair the fund’s ability to achieve its investment objective.

U.S. Treasury Money Market Fund | Class Z Shares | Liquidity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Liquidity Risk — The fund may not be able to sell a security in a timely manner or at a desired price, or may be unable to sell the security at all, because of a lack of demand in the market for the security.

U.S. Treasury Money Market Fund | Class Z Shares | Redemption Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Redemption Risk — If there are unexpectedly high redemptions of fund shares, the fund might have to sell portfolio securities prior to their maturity, possibly at a loss.

U.S. Treasury Money Market Fund | Class Z Shares | Income Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Income Risk — The level of income you receive from the fund will be affected by movements in short-term interest rates.

U.S. Treasury Money Market Fund | Class Z Shares | Cybersecurity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Cybersecurity Risk — The fund may be subject to operational and informational security risks resulting from breaches in cybersecurity at the fund, the fund’s affiliates or service providers. A cybersecurity breach at an issuer of securities in which the fund invests may cause such securities to lose value.

U.S. Treasury Money Market Fund | Class Z Shares | Regulatory Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Regulatory Risk — Changes to monetary policy by the Federal Reserve or other regulatory actions may impact the fund’s operations, universe of potential investment options, and return potential. 

Institutional Prime Obligations Fund | Class T Shares  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol FIUXX
Risk/Return [Heading] rr_RiskReturnHeading Institutional Prime Obligations Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Institutional Prime Obligations Fund’s objective is to seek maximum current income to the extent consistent with the preservation of capital and maintenance of liquidity.

Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following tables describe the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Maximum Cumulative Sales Charge (as a percentage of Offering Price) rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.10%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Component1 Other Expenses rr_Component1OtherExpensesOverAssets 0.20%
Component2 Other Expenses rr_Component2OtherExpensesOverAssets 0.14%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.44%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.04%) [141]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.40% [141]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2024
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

Example: This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and the fund’s operating expenses remain the same (except that the example incorporates the fund’s expense limitation arrangements for only the first year of each period presented). You would incur these hypothetical expenses whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 41
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 137
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 242
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 551
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Institutional Prime Obligations Fund invests in high-quality short-term debt obligations, including:

 

●commercial paper;

●U.S. dollar-denominated obligations of domestic and foreign banks with total assets of at least $500 million (including fixed and variable rate certificates of deposit, time deposits, and bankers’ acceptances);

●non-convertible corporate debt securities;

●securities issued by the U.S. government or one of its agencies or instrumentalities;

●municipal securities, including variable rate demand notes, commercial paper, and municipal notes and other short-term municipal obligations;

●loan participation interests; and

●repurchase agreements.

 

The fund concentrates its investments in the banking industry. Therefore, under normal market conditions, the fund will invest more than 25% of its total assets in obligations issued by companies in the banking industry. The fund may, however, invest 25% or less of its total assets in this industry as a temporary defensive measure.

 

The adviser will only purchase (and hold) securities that it determines present minimal credit risk. If a security is no longer determined to present minimal credit risk, the adviser will make every attempt to sell the security, unless it has determined that it would not be in the best interest of the fund to dispose of the security at that time and, where necessary, has obtained the approval of the fund’s board of trustees to continue to hold the security.

Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the potential risks of investing in the fund. The fund’s past performance is not necessarily an indication of how the fund will perform in the future. Updated performance information is available online at www.firstamericanfunds.com or by calling 800 677-3863.

 

The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.

 

The performance shown in the bar chart and performance table is the performance of the fund’s predecessor entity, Institutional Prime Obligations Fund, a series of First American Funds, Inc. (the “Predecessor Fund”), prior to the commencement of the fund’s operations. On December 22, 2023 the fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, the fund adopted the performance and financial history of the Predecessor Fund. The fund has the same investment objective, strategy, risks and investment adviser as the Predecessor Fund. As a result, the performance of the fund would have been substantially similar to that of the Predecessor Fund.

 

The bar chart shows the performance of the Predecessor Fund’s Class T shares which was adopted by the Class T shares of the fund for periods prior to the Reorganization. If the Predecessor Fund’s investment adviser had not waived or reimbursed certain Predecessor Fund expenses during these periods, the Predecessor Fund’s returns would have been lower.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart shows you the variability of the fund’s performance from year to year.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 677-3863
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.firstamericanfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund’s past performance is not necessarily an indication of how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading ANNUAL TOTAL RETURNS AS OF 12/31 EACH YEAR
Annual Return 2013 rr_AnnualReturn2013 0.01% [142]
Annual Return 2014 rr_AnnualReturn2014 0.02% [142]
Annual Return 2015 rr_AnnualReturn2015 0.02% [142]
Annual Return 2016 rr_AnnualReturn2016 0.10% [142]
Annual Return 2017 rr_AnnualReturn2017 0.77% [142]
Annual Return 2018 rr_AnnualReturn2018 1.70% [142]
Annual Return 2019 rr_AnnualReturn2019 2.02% [142]
Annual Return 2020 rr_AnnualReturn2020 0.34% [142]
Annual Return 2021 rr_AnnualReturn2021 none [142]
Annual Return 2022 rr_AnnualReturn2022 1.47% [142]
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Best Quarter: Quarter ended December 31, 2022 0.88%
Worst Quarter: Quarter ended March 31, 2022* (0.01)%

*   Most recent quarter with this return during the period of the chart.
Year to Date Return, Label rr_YearToDateReturnLabel Total return for the period 1/1/2023 through 9/30/2023
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2023
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 3.59%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2022
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 0.88%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2022 [143]
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (0.01%)
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS AS OF 12/31/22
1 Year rr_AverageAnnualReturnYear01 1.47% [144],[145]
5 Years rr_AverageAnnualReturnYear05 1.10% [144],[145]
10 Years rr_AverageAnnualReturnYear10 0.64% [144],[145]
Inception Date rr_AverageAnnualReturnInceptionDate Sep. 24, 2001 [144],[145]
Institutional Prime Obligations Fund | Class T Shares | Risk Lose Money [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock You could lose money by investing in the fund.
Institutional Prime Obligations Fund | Class T Shares | Credit Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Credit Risk — The value of your investment might decline if the issuer of an obligation held by the fund defaults on the obligation or has its credit rating downgraded.

Institutional Prime Obligations Fund | Class T Shares | Interest Rate Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Interest Rate Risk — The value of your investment might decline because of a sharp rise in interest rates that causes the value of the fund’s portfolio holdings to fall. During periods when interest rates are low or there are negative interest rates, the fund’s yield (and total return) also may be low or the fund may be unable to maintain positive returns.

Institutional Prime Obligations Fund | Class T Shares | Market Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Market Risk — Market volatility, dramatic changes to interest rates, and otherwise unfavorable economic conditions resulting from major cybersecurity events, geopolitical events (including wars, such as Russia’s invasion of Ukraine, tensions in the Middle East, terror attacks, and disruptions to foreign economic and trade relationships), public health emergencies, among other events, may negatively impact the fund’s performance or impair the fund’s ability to achieve its investment objective.

Institutional Prime Obligations Fund | Class T Shares | Liquidity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Liquidity Risk — The fund may not be able to sell a security in a timely manner or at a desired price, or may be unable to sell the security at all, because of a lack of demand in the market for the security, or a liquidity provider defaults on its obligation to purchase the security when properly tendered by the fund.

Institutional Prime Obligations Fund | Class T Shares | Redemption Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Redemption Risk — If there are unexpectedly high redemptions of fund shares, the fund might have to sell portfolio securities prior to their maturity, possibly at a loss.

Institutional Prime Obligations Fund | Class T Shares | Repurchase Agreement Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Repurchase Agreement Risk — If the seller of a repurchase agreement defaults on its obligation to repurchase securities from the fund, the fund may incur costs in disposing of the securities purchased and may experience losses if the proceeds from the sale of the securities are less than the full repurchase price.

Institutional Prime Obligations Fund | Class T Shares | Income Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Income Risk — The level of income you receive from the fund will be affected by movements in short-term interest rates.

Institutional Prime Obligations Fund | Class T Shares | Cybersecurity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Cybersecurity Risk — The fund may be subject to operational and informational security risks resulting from breaches in cybersecurity at the fund, the fund’s affiliates or service providers. A cybersecurity breach at an issuer of securities in which the fund invests may cause such securities to lose value. 

Institutional Prime Obligations Fund | Class T Shares | Regulatory Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Regulatory Risk — Changes to monetary policy by the Federal Reserve or other regulatory actions may impact the fund’s operations, universe of potential investment options, and return potential.

Institutional Prime Obligations Fund | Class T Shares | Banking Industry Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Banking Industry Risk — An adverse development in the banking industry (domestic or foreign) may affect the value of the fund’s investments more than if the fund were not invested to such a degree in the banking industry. Banks may be particularly susceptible to certain economic factors such as interest rate changes, adverse developments in the real estate market, fiscal, regulatory and monetary policy and general economic cycles.

Institutional Prime Obligations Fund | Class T Shares | Foreign Security Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Foreign Security Risk — Securities of foreign issuers, even when dollar denominated and publicly traded in the United States, may involve risks not associated with the securities of domestic issuers. Uncertainty surrounding the sovereign debt of several European Union countries, as well as the continued existence of the European Union itself, has disrupted and may continue to disrupt markets in the United States and around the world. If a country changes its currency or leaves the European Union or if the European Union dissolves, the world’s securities markets likely will be significantly disrupted.

Institutional Prime Obligations Fund | Class T Shares | Variable Rate Demand Note V R D N Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Variable Rate Demand Note (VRDN) Risk — Investments in VRDNs involve credit risk with respect to the issuer or financial institution providing the fund with the credit and liquidity support for the unconditional put option. While the fund invests only in VRDNs of high quality issuers, or which are supported by high quality financial institutions, it is still possible that an issuer or financial institution could default on its obligations.

Institutional Prime Obligations Fund | Class T Shares | Municipal Security Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Municipal Security Risk — The value of municipal securities owned by the fund may be adversely affected by future changes in federal income tax laws, including rate reductions or the imposition of a flat tax, and adverse changes in the financial conditions of municipal securities issuers.

Institutional Prime Obligations Fund | Class V Shares  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol FPIXX
Risk/Return [Heading] rr_RiskReturnHeading Institutional Prime Obligations Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Institutional Prime Obligations Fund’s objective is to seek maximum current income to the extent consistent with the preservation of capital and maintenance of liquidity.

Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following tables describe the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Maximum Cumulative Sales Charge (as a percentage of Offering Price) rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.10%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Component1 Other Expenses rr_Component1OtherExpensesOverAssets 0.10%
Component2 Other Expenses rr_Component2OtherExpensesOverAssets 0.14%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.34%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.04%) [146]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.30% [146]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2024
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

Example: This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and the fund’s operating expenses remain the same (except that the example incorporates the fund’s expense limitation arrangements for only the first year of each period presented). You would incur these hypothetical expenses whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 31
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 105
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 187
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 427
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Institutional Prime Obligations Fund invests in high-quality short-term debt obligations, including:

 

●commercial paper;

●U.S. dollar-denominated obligations of domestic and foreign banks with total assets of at least $500 million (including fixed and variable rate certificates of deposit, time deposits, and bankers’ acceptances);

●non-convertible corporate debt securities;

●securities issued by the U.S. government or one of its agencies or instrumentalities;

●municipal securities, including variable rate demand notes, commercial paper, and municipal notes and other short-term municipal obligations;

●loan participation interests; and

●repurchase agreements.

 

The fund concentrates its investments in the banking industry. Therefore, under normal market conditions, the fund will invest more than 25% of its total assets in obligations issued by companies in the banking industry. The fund may, however, invest 25% or less of its total assets in this industry as a temporary defensive measure.

 

The adviser will only purchase (and hold) securities that it determines present minimal credit risk. If a security is no longer determined to present minimal credit risk, the adviser will make every attempt to sell the security, unless it has determined that it would not be in the best interest of the fund to dispose of the security at that time and, where necessary, has obtained the approval of the fund’s board of trustees to continue to hold the security.

Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the potential risks of investing in the fund. The fund’s past performance is not necessarily an indication of how the fund will perform in the future. Updated performance information is available online at www.firstamericanfunds.com or by calling 800 677-3863.

 

The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.

 

The performance shown in the bar chart and performance table is the performance of the fund’s predecessor entity, Institutional Prime Obligations Fund, a series of First American Funds, Inc. (the “Predecessor Fund”), prior to the commencement of the fund’s operations. On December 22, 2023 the fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, the fund adopted the performance and financial history of the Predecessor Fund. The fund has the same investment objective, strategy, risks and investment adviser as the Predecessor Fund. As a result, the performance of the fund would have been substantially similar to that of the Predecessor Fund.

 

The bar chart shows the performance of the Predecessor Fund’s Class V shares which was adopted by the Class V shares of the fund for periods prior to the Reorganization. If the Predecessor Fund’s investment adviser had not waived or reimbursed certain Predecessor Fund expenses during these periods, the Predecessor Fund’s returns would have been lower.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart shows you the variability of the fund’s performance from year to year.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 677-3863
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.firstamericanfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund’s past performance is not necessarily an indication of how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading ANNUAL TOTAL RETURNS AS OF 12/31 EACH YEAR
Annual Return 2013 rr_AnnualReturn2013 0.01% [147]
Annual Return 2014 rr_AnnualReturn2014 0.02% [147]
Annual Return 2015 rr_AnnualReturn2015 0.02% [147]
Annual Return 2016 rr_AnnualReturn2016 0.19% [147]
Annual Return 2017 rr_AnnualReturn2017 0.86% [147]
Annual Return 2018 rr_AnnualReturn2018 1.81% [147]
Annual Return 2019 rr_AnnualReturn2019 2.12% [147]
Annual Return 2020 rr_AnnualReturn2020 0.39% [147]
Annual Return 2021 rr_AnnualReturn2021 none [147]
Annual Return 2022 rr_AnnualReturn2022 1.56% [147]
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Best Quarter: Quarter ended December 31, 2022 0.91%
Worst Quarter: Quarter ended March 31, 2022* (0.01)%
*   Most recent quarter with this return during the period of the chart.
Year to Date Return, Label rr_YearToDateReturnLabel Total return for the period 1/1/2023 through 9/30/2023
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2023
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 3.65%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2022
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 0.91%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2022 [148]
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (0.01%)
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS AS OF 12/31/22
1 Year rr_AverageAnnualReturnYear01 1.56% [149],[150]
5 Years rr_AverageAnnualReturnYear05 1.17% [149],[150]
10 Years rr_AverageAnnualReturnYear10 0.69% [149],[150]
Inception Date rr_AverageAnnualReturnInceptionDate Mar. 31, 2006 [149],[150]
Institutional Prime Obligations Fund | Class V Shares | Risk Lose Money [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock You could lose money by investing in the fund.
Institutional Prime Obligations Fund | Class V Shares | Credit Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Credit Risk — The value of your investment might decline if the issuer of an obligation held by the fund defaults on the obligation or has its credit rating downgraded.

Institutional Prime Obligations Fund | Class V Shares | Interest Rate Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Interest Rate Risk — The value of your investment might decline because of a sharp rise in interest rates that causes the value of the fund’s portfolio holdings to fall. During periods when interest rates are low or there are negative interest rates, the fund’s yield (and total return) also may be low or the fund may be unable to maintain positive returns.

Institutional Prime Obligations Fund | Class V Shares | Market Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Market Risk — Market volatility, dramatic changes to interest rates, and otherwise unfavorable economic conditions resulting from major cybersecurity events, geopolitical events (including wars, such as Russia’s invasion of Ukraine, tensions in the Middle East, terror attacks, and disruptions to foreign economic and trade relationships), public health emergencies, among other events, may negatively impact the fund’s performance or impair the fund’s ability to achieve its investment objective.

Institutional Prime Obligations Fund | Class V Shares | Liquidity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Liquidity Risk — The fund may not be able to sell a security in a timely manner or at a desired price, or may be unable to sell the security at all, because of a lack of demand in the market for the security, or a liquidity provider defaults on its obligation to purchase the security when properly tendered by the fund.

Institutional Prime Obligations Fund | Class V Shares | Redemption Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Redemption Risk — If there are unexpectedly high redemptions of fund shares, the fund might have to sell portfolio securities prior to their maturity, possibly at a loss.

Institutional Prime Obligations Fund | Class V Shares | Repurchase Agreement Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Repurchase Agreement Risk — If the seller of a repurchase agreement defaults on its obligation to repurchase securities from the fund, the fund may incur costs in disposing of the securities purchased and may experience losses if the proceeds from the sale of the securities are less than the full repurchase price.

Institutional Prime Obligations Fund | Class V Shares | Income Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Income Risk — The level of income you receive from the fund will be affected by movements in short-term interest rates.

Institutional Prime Obligations Fund | Class V Shares | Cybersecurity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Cybersecurity Risk — The fund may be subject to operational and informational security risks resulting from breaches in cybersecurity at the fund, the fund’s affiliates or service providers. A cybersecurity breach at an issuer of securities in which the fund invests may cause such securities to lose value.

Institutional Prime Obligations Fund | Class V Shares | Regulatory Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Regulatory Risk — Changes to monetary policy by the Federal Reserve or other regulatory actions may impact the fund’s operations, universe of potential investment options, and return potential.

Institutional Prime Obligations Fund | Class V Shares | Banking Industry Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Banking Industry Risk — An adverse development in the banking industry (domestic or foreign) may affect the value of the fund’s investments more than if the fund were not invested to such a degree in the banking industry. Banks may be particularly susceptible to certain economic factors such as interest rate changes, adverse developments in the real estate market, fiscal, regulatory and monetary policy and general economic cycles.

Institutional Prime Obligations Fund | Class V Shares | Foreign Security Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Foreign Security Risk — Securities of foreign issuers, even when dollar denominated and publicly traded in the United States, may involve risks not associated with the securities of domestic issuers. Uncertainty surrounding the sovereign debt of several European Union countries, as well as the continued existence of the European Union itself, has disrupted and may continue to disrupt markets in the United States and around the world. If a country changes its currency or leaves the European Union or if the European Union dissolves, the world’s securities markets likely will be significantly disrupted.

Institutional Prime Obligations Fund | Class V Shares | Variable Rate Demand Note V R D N Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Variable Rate Demand Note (VRDN) Risk — Investments in VRDNs involve credit risk with respect to the issuer or financial institution providing the fund with the credit and liquidity support for the unconditional put option.

Institutional Prime Obligations Fund | Class V Shares | Municipal Security Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Municipal Security Risk — The value of municipal securities owned by the fund may be adversely affected by future changes in federal income tax laws, including rate reductions or the imposition of a flat tax, and adverse changes in the financial conditions of municipal securities issuers.

Institutional Prime Obligations Fund | Class Y Shares  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol FAIXX
Risk/Return [Heading] rr_RiskReturnHeading Institutional Prime Obligations Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Institutional Prime Obligations Fund’s objective is to seek maximum current income to the extent consistent with the preservation of capital and maintenance of liquidity.

Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following tables describe the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Maximum Cumulative Sales Charge (as a percentage of Offering Price) rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.10%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Component1 Other Expenses rr_Component1OtherExpensesOverAssets 0.25%
Component2 Other Expenses rr_Component2OtherExpensesOverAssets 0.14%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.49%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.04%) [151]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.45% [151]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2024
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

Example: This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and the fund’s operating expenses remain the same (except that the example incorporates the fund’s expense limitation arrangements for only the first year of each period presented). You would incur these hypothetical expenses whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 46
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 153
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 270
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 612
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Institutional Prime Obligations Fund invests in high-quality short-term debt obligations, including:

 

•commercial paper;

•U.S. dollar-denominated obligations of domestic and foreign banks with total assets of at least $500 million (including fixed and variable rate certificates of deposit, time deposits, and bankers’ acceptances);

•non-convertible corporate debt securities;

•securities issued by the U.S. government or one of its agencies or instrumentalities;

•municipal securities, including variable rate demand notes, commercial paper, and municipal notes and other short-term municipal obligations;

•loan participation interests; and

•repurchase agreements.

 

The fund concentrates its investments in the banking industry. Therefore, under normal market conditions, the fund will invest more than 25% of its total assets in obligations issued by companies in the banking industry. The fund may, however, invest 25% or less of its total assets in this industry as a temporary defensive measure.

 

The adviser will only purchase (and hold) securities that it determines present minimal credit risk. If a security is no longer determined to present minimal credit risk, the adviser will make every attempt to sell the security, unless it has determined that it would not be in the best interest of the fund to dispose of the security at that time and, where necessary, has obtained the approval of the fund’s board of trustees to continue to hold the security.

Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the potential risks of investing in the fund. The fund’s past performance is not necessarily an indication of how the fund will perform in the future. Updated performance information is available online at www.firstamericanfunds.com or by calling 800 677-3863.

 

The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.

 

The performance shown in the bar chart and performance table is the performance of the fund’s predecessor entity, Institutional Prime Obligations Fund, a series of First American Funds, Inc. (the “Predecessor Fund”), prior to the commencement of the fund’s operations. On December 22, 2023 the fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, the fund adopted the performance and financial history of the Predecessor Fund. The fund has the same investment objective, strategy, risks and investment adviser as the Predecessor Fund. As a result, the performance of the fund would have been substantially similar to that of the Predecessor Fund.

 

The bar chart shows the performance of the Predecessor Fund’s Class Y shares which was adopted by the Class Y shares of the fund for periods prior to the Reorganization. If the Predecessor Fund’s investment adviser had not waived or reimbursed certain Predecessor Fund expenses during these periods, the Predecessor Fund’s returns would have been lower.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 677-3863
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.firstamericanfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund’s past performance is not necessarily an indication of how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading ANNUAL TOTAL RETURNS AS OF 12/31 EACH YEAR
Annual Return 2013 rr_AnnualReturn2013 0.01% [152]
Annual Return 2014 rr_AnnualReturn2014 0.02% [152]
Annual Return 2015 rr_AnnualReturn2015 0.02% [152]
Annual Return 2016 rr_AnnualReturn2016 0.06% [152]
Annual Return 2017 rr_AnnualReturn2017 0.72% [152]
Annual Return 2018 rr_AnnualReturn2018 1.65% [152]
Annual Return 2019 rr_AnnualReturn2019 1.97% [152]
Annual Return 2020 rr_AnnualReturn2020 0.31% [152]
Annual Return 2021 rr_AnnualReturn2021 none [152]
Annual Return 2022 rr_AnnualReturn2022 1.44% [152]
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Best Quarter: Quarter ended December 31, 2022 0.79%
     
Worst Quarter: Quarter ended March 31, 2022* 0.00%
     
* Most recent quarter with this return during the period of the chart.
Year to Date Return, Label rr_YearToDateReturnLabel Total return for the period 1/1/2023 through 9/30/2023
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2023
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 3.54%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2022
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 0.79%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Mar. 31, 2022 [153]
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn none
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS AS OF 12/31/22
1 Year rr_AverageAnnualReturnYear01 1.28% [154],[155]
5 Years rr_AverageAnnualReturnYear05 0.95% [154],[155]
10 Years rr_AverageAnnualReturnYear10 0.53% [154],[155]
Inception Date rr_AverageAnnualReturnInceptionDate Mar. 01, 1990 [154],[155]
Institutional Prime Obligations Fund | Class Y Shares | Risk Lose Money [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock You could lose money by investing in the fund.
Institutional Prime Obligations Fund | Class Y Shares | Credit Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Credit Risk — The value of your investment might decline if the issuer of an obligation held by the fund defaults on the obligation or has its credit rating downgraded.

Institutional Prime Obligations Fund | Class Y Shares | Interest Rate Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Interest Rate Risk — The value of your investment might decline because of a sharp rise in interest rates that causes the value of the fund’s portfolio holdings to fall. During periods when interest rates are low or there are negative interest rates, the fund’s yield (and total return) also may be low or the fund may be unable to maintain positive returns.

Institutional Prime Obligations Fund | Class Y Shares | Market Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Market Risk — Market volatility, dramatic changes to interest rates, and otherwise unfavorable economic conditions resulting from major cybersecurity events, geopolitical events (including wars, such as Russia’s invasion of Ukraine, tensions in the Middle East, terror attacks, and disruptions to foreign economic and trade relationships), public health emergencies, among other events, may negatively impact the fund’s performance or impair the fund’s ability to achieve its investment objective.

Institutional Prime Obligations Fund | Class Y Shares | Liquidity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Liquidity Risk — The fund may not be able to sell a security in a timely manner or at a desired price, or may be unable to sell the security at all, because of a lack of demand in the market for the security, or a liquidity provider defaults on its obligation to purchase the security when properly tendered by the fund.

Institutional Prime Obligations Fund | Class Y Shares | Redemption Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Redemption Risk — If there are unexpectedly high redemptions of fund shares, the fund might have to sell portfolio securities prior to their maturity, possibly at a loss.

Institutional Prime Obligations Fund | Class Y Shares | Repurchase Agreement Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Repurchase Agreement Risk — If the seller of a repurchase agreement defaults on its obligation to repurchase securities from the fund, the fund may incur costs in disposing of the securities purchased and may experience losses if the proceeds from the sale of the securities are less than the full repurchase price.

Institutional Prime Obligations Fund | Class Y Shares | Income Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Income Risk — The level of income you receive from the fund will be affected by movements in short-term interest rates.

Institutional Prime Obligations Fund | Class Y Shares | Cybersecurity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Cybersecurity Risk — The fund may be subject to operational and informational security risks resulting from breaches in cybersecurity at the fund, the fund’s affiliates or service providers. A cybersecurity breach at an issuer of securities in which the fund invests may cause such securities to lose value.

Institutional Prime Obligations Fund | Class Y Shares | Regulatory Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Regulatory Risk — Changes to monetary policy by the Federal Reserve or other regulatory actions may impact the fund’s operations, universe of potential investment options, and return potential.

Institutional Prime Obligations Fund | Class Y Shares | Banking Industry Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Banking Industry Risk — An adverse development in the banking industry (domestic or foreign) may affect the value of the fund’s investments more than if the fund were not invested to such a degree in the banking industry. Banks may be particularly susceptible to certain economic factors such as interest rate changes, adverse developments in the real estate market, fiscal, regulatory and monetary policy and general economic cycles.

Institutional Prime Obligations Fund | Class Y Shares | Foreign Security Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Foreign Security Risk — Securities of foreign issuers, even when dollar denominated and publicly traded in the United States, may involve risks not associated with the securities of domestic issuers. Uncertainty surrounding the sovereign debt of several European Union countries, as well as the continued existence of the European Union itself, has disrupted and may continue to disrupt markets in the United States and around the world. If a country changes its currency or leaves the European Union or if the European Union dissolves, the world’s securities markets likely will be significantly disrupted.

Institutional Prime Obligations Fund | Class Y Shares | Variable Rate Demand Note V R D N Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Variable Rate Demand Note (VRDN) Risk — Investments in VRDNs involve credit risk with respect to the issuer or financial institution providing the fund with the credit and liquidity support for the unconditional put option.

Institutional Prime Obligations Fund | Class Y Shares | Municipal Security Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Municipal Security Risk — The value of municipal securities owned by the fund may be adversely affected by future changes in federal income tax laws, including rate reductions or the imposition of a flat tax, and adverse changes in the financial conditions of municipal securities issuers.

Institutional Prime Obligations Fund | Class Z Shares  
Prospectus [Line Items] rr_ProspectusLineItems  
Trading Symbol dei_TradingSymbol FPZXX
Risk/Return [Heading] rr_RiskReturnHeading Institutional Prime Obligations Fund
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

Institutional Prime Obligations Fund’s objective is to seek maximum current income to the extent consistent with the preservation of capital and maintenance of liquidity.

Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock

The following tables describe the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Maximum Cumulative Sales Charge (as a percentage of Offering Price) rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Maximum Deferred Sales Charge (as a percentage of Offering Price) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.10%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets 0.14%
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.24%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.04%) [156]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.20% [156]
Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2024
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock

Example: This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and the fund’s operating expenses remain the same (except that the example incorporates the fund’s expense limitation arrangements for only the first year of each period presented). You would incur these hypothetical expenses whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 20
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 73
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 131
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 302
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Institutional Prime Obligations Fund invests in high-quality short-term debt obligations, including:

 

●commercial paper;

●U.S. dollar-denominated obligations of domestic and foreign banks with total assets of at least $500 million (including fixed and variable rate certificates of deposit, time deposits, and bankers’ acceptances);

●non-convertible corporate debt securities;

●securities issued by the U.S. government or one of its agencies or instrumentalities;

●municipal securities, including variable rate demand notes, commercial paper, and municipal notes and other short-term municipal obligations;

●loan participation interests; and

●repurchase agreements.

 

The fund concentrates its investments in the banking industry. Therefore, under normal market conditions, the fund will invest more than 25% of its total assets in obligations issued by companies in the banking industry. The fund may, however, invest 25% or less of its total assets in this industry as a temporary defensive measure.

 

The adviser will only purchase (and hold) securities that it determines present minimal credit risk. If a security is no longer determined to present minimal credit risk, the adviser will make every attempt to sell the security, unless it has determined that it would not be in the best interest of the fund to dispose of the security at that time and, where necessary, has obtained the approval of the fund’s board of trustees to continue to hold the security.

Risk [Heading] rr_RiskHeading Principal Risks
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Fund Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the potential risks of investing in the fund. The fund’s past performance is not necessarily an indication of how the fund will perform in the future. Updated performance information is available online at www.firstamericanfunds.com or by calling 800 677-3863.

 

The bar chart shows you the variability of the fund’s performance from year to year. The table illustrates the fund’s average annual total returns over the time periods indicated.

 

The performance shown in the bar chart and performance table is the performance of the fund’s predecessor entity, Institutional Prime Obligations Fund, a series of First American Funds, Inc. (the “Predecessor Fund”), prior to the commencement of the fund’s operations. On December 22, 2023 the fund acquired all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, the fund adopted the performance and financial history of the Predecessor Fund. The fund has the same investment objective, strategy, risks and investment adviser as the Predecessor Fund. As a result, the performance of the fund would have been substantially similar to that of the Predecessor Fund.

 

The bar chart shows the performance of the Predecessor Fund’s Class Z shares which was adopted by the Class Z shares of the fund for periods prior to the Reorganization. If the Predecessor Fund’s investment adviser had not waived or reimbursed certain Predecessor Fund expenses during these periods, the Predecessor Fund’s returns would have been lower.

Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart shows you the variability of the fund’s performance from year to year.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 800 677-3863
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.firstamericanfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The fund’s past performance is not necessarily an indication of how the fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading ANNUAL TOTAL RETURNS AS OF 12/31 EACH YEAR
Annual Return 2013 rr_AnnualReturn2013 0.01% [157]
Annual Return 2014 rr_AnnualReturn2014 0.02% [157]
Annual Return 2015 rr_AnnualReturn2015 0.04% [157]
Annual Return 2016 rr_AnnualReturn2016 0.29% [157]
Annual Return 2017 rr_AnnualReturn2017 0.98% [157]
Annual Return 2018 rr_AnnualReturn2018 1.97% [157]
Annual Return 2019 rr_AnnualReturn2019 2.28% [157]
Annual Return 2020 rr_AnnualReturn2020 0.50% [157]
Annual Return 2021 rr_AnnualReturn2021 0.05% [157]
Annual Return 2022 rr_AnnualReturn2022 1.64% [157]
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock

Best Quarter: Quarter ended December 31, 2022 0.94%
Worst Quarter: Quarter ended December 31, 2020* 0.00%

*   Most recent quarter with this return during the period of the chart.
Year to Date Return, Label rr_YearToDateReturnLabel Total return for the period 1/1/2023 through 9/30/2023
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2023
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 3.73%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2022
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 0.94%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2020 [158]
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn none
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS AS OF 12/31/22
1 Year rr_AverageAnnualReturnYear01 1.64% [159],[160]
5 Years rr_AverageAnnualReturnYear05 1.28% [159],[160]
10 Years rr_AverageAnnualReturnYear10 0.77% [159],[160]
Inception Date rr_AverageAnnualReturnInceptionDate Aug. 01, 2003 [159],[160]
Institutional Prime Obligations Fund | Class Z Shares | Risk Lose Money [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock You could lose money by investing in the fund.
Institutional Prime Obligations Fund | Class Z Shares | Credit Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Credit Risk — The value of your investment might decline if the issuer of an obligation held by the fund defaults on the obligation or has its credit rating downgraded.

Institutional Prime Obligations Fund | Class Z Shares | Interest Rate Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Interest Rate Risk — The value of your investment might decline because of a sharp rise in interest rates that causes the value of the fund’s portfolio holdings to fall. During periods when interest rates are low or there are negative interest rates, the fund’s yield (and total return) also may be low or the fund may be unable to maintain positive returns.

Institutional Prime Obligations Fund | Class Z Shares | Market Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Market Risk — Market volatility, dramatic changes to interest rates, and otherwise unfavorable economic conditions resulting from major cybersecurity events, geopolitical events (including wars, such as Russia’s invasion of Ukraine, tensions in the Middle East, terror attacks, and disruptions to foreign economic and trade relationships), public health emergencies, among other events, may negatively impact the fund’s performance or impair the fund’s ability to achieve its investment objective.

Institutional Prime Obligations Fund | Class Z Shares | Liquidity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Liquidity Risk — The fund may not be able to sell a security in a timely manner or at a desired price, or may be unable to sell the security at all, because of a lack of demand in the market for the security, or a liquidity provider defaults on its obligation to purchase the security when properly tendered by the fund.

Institutional Prime Obligations Fund | Class Z Shares | Redemption Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Redemption Risk — If there are unexpectedly high redemptions of fund shares, the fund might have to sell portfolio securities prior to their maturity, possibly at a loss.

Institutional Prime Obligations Fund | Class Z Shares | Repurchase Agreement Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Repurchase Agreement Risk — If the seller of a repurchase agreement defaults on its obligation to repurchase securities from the fund, the fund may incur costs in disposing of the securities purchased and may experience losses if the proceeds from the sale of the securities are less than the full repurchase price.

Institutional Prime Obligations Fund | Class Z Shares | Income Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Income Risk — The level of income you receive from the fund will be affected by movements in short-term interest rates.

Institutional Prime Obligations Fund | Class Z Shares | Cybersecurity Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Cybersecurity Risk — The fund may be subject to operational and informational security risks resulting from breaches in cybersecurity at the fund, the fund’s affiliates or service providers. A cybersecurity breach at an issuer of securities in which the fund invests may cause such securities to lose value. 

Institutional Prime Obligations Fund | Class Z Shares | Regulatory Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Regulatory Risk — Changes to monetary policy by the Federal Reserve or other regulatory actions may impact the fund’s operations, universe of potential investment options, and return potential.

Institutional Prime Obligations Fund | Class Z Shares | Banking Industry Risk [Member]  
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Risk [Text Block] rr_RiskTextBlock

Banking Industry Risk — An adverse development in the banking industry (domestic or foreign) may affect the value of the fund’s investments more than if the fund were not invested to such a degree in the banking industry. Banks may be particularly susceptible to certain economic factors such as interest rate changes, adverse developments in the real estate market, fiscal, regulatory and monetary policy and general economic cycles.

Institutional Prime Obligations Fund | Class Z Shares | Foreign Security Risk [Member]  
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Risk [Text Block] rr_RiskTextBlock

Foreign Security Risk — Securities of foreign issuers, even when dollar denominated and publicly traded in the United States, may involve risks not associated with the securities of domestic issuers. Uncertainty surrounding the sovereign debt of several European Union countries, as well as the continued existence of the European Union itself, has disrupted and may continue to disrupt markets in the United States and around the world. If a country changes its currency or leaves the European Union or if the European Union dissolves, the world’s securities markets likely will be significantly disrupted.

Institutional Prime Obligations Fund | Class Z Shares | Variable Rate Demand Note V R D N Risk [Member]  
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Risk [Text Block] rr_RiskTextBlock

Variable Rate Demand Note (VRDN) Risk — Investments in VRDNs involve credit risk with respect to the issuer or financial institution providing the fund with the credit and liquidity support for the unconditional put option.

Institutional Prime Obligations Fund | Class Z Shares | Municipal Security Risk [Member]  
Prospectus [Line Items] rr_ProspectusLineItems  
Risk [Text Block] rr_RiskTextBlock

Municipal Security Risk — The value of municipal securities owned by the fund may be adversely affected by future changes in federal income tax laws, including rate reductions or the imposition of a flat tax, and adverse changes in the financial conditions of municipal securities issuers.

[1] The adviser has contractually agreed to waive fees and reimburse other fund expenses through December 31, 2024, so that total annual fund operating expenses, after waivers, do not exceed 0.75%. These fee waivers and expense reimbursements may be terminated at any time after December 31, 2024 at the discretion of the adviser. Prior to that time, such waivers and reimbursements may not be terminated without the approval of the fund’s board of directors.
[2] Total return for the period 1/1/23 through 9/30/23 was 3.17%.
[3] Most recent quarter with this return during the period of the chart.
[4] Total return for the period 1/1/2023 through 9/30/2023 was 3.17%.
[5] The adviser has contractually agreed to waive fees and reimburse other fund expenses through December 31, 2024, so that total annual fund operating expenses, after waivers, do not exceed 0.60%. These fee waivers and expense reimbursements may be terminated at any time after December 31, 2024 at the discretion of the adviser. Prior to that time, such waivers and reimbursements may not be terminated without the approval of the fund’s board of directors.
[6] Total return for the period 1/1/2023 through 9/30/2023 was 3.28%.
[7] Most recent quarter with this return during the period of the chart.
[8] Total return for the period 1/1/2023 through 9/30/2023 was 3.28%.
[9] The adviser has contractually agreed to waive fees and reimburse other fund expenses through December 31, 2024, so that total annual fund operating expenses, after waivers, do not exceed 0.18%. These fee waivers and expense reimbursements may be terminated at any time after December 31, 2024 at the discretion of the adviser. Prior to that time, such waivers and reimbursements may not be terminated without the approval of the fund’s board of directors.
[10] Total return for the period 1/1/2023 through 9/30/2023 was 3.62%.
[11] Most recent quarter with this return during the period of the chart.
[12] Total return for the period 1/1/2023 through 9/30/2023 was 3.62%.
[13] The adviser has contractually agreed to waive fees and reimburse other fund expenses through December 31, 2024, so that total annual fund operating expenses, after waivers, do not exceed 0.40%. These fee waivers and expense reimbursements may be terminated at any time after December 31, 2024 at the discretion of the adviser. Prior to that time, such waivers and reimbursements may not be terminated without the approval of the fund’s board of directors.
[14] Total return for the period 1/1/2023 through 9/30/2023 was 3.44%.
[15] Most recent quarter with this return during the period of the chart.
[16] Total return for the period 1/1/2023 through 9/30/2023 was 3.44%.
[17] The adviser has contractually agreed to waive fees and reimburse other fund expenses through December 31, 2024, so that the total annual fund operating expenses, after waivers, do not exceed 0.12%. These fee waivers and expense reimbursements may be terminated at any time after December 31, 2024 at the discretion of the adviser. Prior to that time, such waivers and reimbursements may not be terminated without the approval of the fund’s board of trustees.
[18] Total return for the period 1/1/2023 through 9/30/2023 was 3.65%.
[19] Most recent quarter with this return during the period of the chart.
[20] Total return for the period 1/1/2023 through 9/30/2023 was 3.65%.
[21] The adviser has contractually agreed to waive fees and reimburse other fund expenses through December 31, 2024, so that total annual fund operating expenses, after waivers, do not exceed 0.30%. These fee waivers and expense reimbursements may be terminated at any time after December 31, 2024 at the discretion of the adviser. Prior to that time, such waivers and reimbursements may not be terminated without the approval of the fund’s board of trustees.
[22] Total return for the period 1/1/2023 through 9/30/2023 was 3.52%.
[23] Most recent quarter with this return during the period of the chart.
[24] Total return for the period 1/1/2023 through 9/30/2023 was 3.52%.
[25] The adviser has contractually agreed to waive fees and reimburse other fund expenses through December 31, 2024, so that total annual fund operating expenses, after waivers, do not exceed 0.14%. These fee waivers and expense reimbursements may be terminated at any time after December 31, 2024 at the discretion of the adviser. Prior to that time, such waivers and reimbursements may not be terminated without the approval of the fund’s board of trustees.
[26] Total return for the period 1/1/2023 through 9/30/2023 was 3.64%.
[27] Most recent quarter with this return during the period of the chart.
[28] Total return for the period 1/1/2023 through 9/30/2023 was 3.64%.
[29] The adviser has contractually agreed to waive fees and reimburse other fund expenses through December 31, 2024, so that total annual fund operating expenses, after waivers, do not exceed 0.45%. These fee waivers and expense reimbursements may be terminated at any time after December 31, 2024 at the discretion of the adviser. Prior to that time, such waivers and reimbursements may not be terminated without the approval of the fund’s board of directors.
[30] Total return for the period 1/1/2023 through 9/30/2023 was 3.40%.
[31] Most recent quarter with this return during the period of the chart.
[32] Total return for the period 1/1/2023 through 9/30/2023 was 3.40%.
[33] The adviser has contractually agreed to waive fees and reimburse other fund expenses through December 31, 2024, so that total annual fund operating expenses, after waivers, do not exceed 0.18%. These fee waivers and expense reimbursements may be terminated at any time after December 31, 2024 at the discretion of the adviser. Prior to that time, such waivers and reimbursements may not be terminated without the approval of the fund’s board of directors.
[34] Total return for the period 1/1/2023 through 9/30/2023 was 3.61%.
[35] Most recent quarter with this return during the period of the chart.
[36] Total return for the period 1/1/2023 through 9/30/2023 was 3.61%.
[37] The adviser has contractually agreed to waive fees and reimburse other fund expenses through December 31, 2024, so that total annual fund operating expenses, after waivers, do not exceed 0.75%. These fee waivers and expense reimbursements may be terminated at any time after December 31, 2024 at the discretion of the adviser. Prior to that time, such waivers and reimbursements may not be terminated without the approval of the fund’s board of trustees.
[38] Total return for the period 1/1/2023 through 9/30/2023 was 3.32%.
[39] Most recent quarter with this return during the period of the chart.
[40] Total return for the period 1/1/2023 through 9/30/2023 was 3.32%.
[41] The adviser has contractually agreed to waive fees and reimburse other fund expenses through December 31, 2024, so that total annual fund operating expenses, after waivers, do not exceed 0.40%. These fee waivers and expense reimbursements may be terminated at any time after December 31, 2024 at the discretion of the adviser. Prior to that time, such waivers and reimbursements may not be terminated without the approval of the fund’s board of trustees.
[42] Total return for the period 1/1/2023 through 9/30/2023 was 3.59%.
[43] Most recent quarter with this return during the period of the chart.
[44] Total return for the period 1/1/2023 through 9/30/2023 was 3.59%.
[45] The adviser has contractually agreed to waive fees and reimburse other fund expenses through December 31, 2024, so that total annual fund operating expenses, after waivers, do not exceed 0.30%. These fee waivers and expense reimbursements may be terminated at any time after December 31, 2024 at the discretion of the adviser. Prior to that time, such waivers and reimbursements may not be terminated without the approval of the fund’s board of trustees.
[46] Total return for the period 1/1/2023 through 9/30/2023 was 3.66%.
[47] Most recent quarter with this return during the period of the chart.
[48] Total return for the period 1/1/2023 through 9/30/2023 was 3.66%.
[49] The adviser has contractually agreed to waive fees and reimburse other fund expenses through December 31, 2024, so that total annual fund operating expenses, after waivers, do not exceed 0.14%. These fee waivers and expense reimbursements may be terminated at any time after December 31, 2024 at the discretion of the adviser. Prior to that time, such waivers and reimbursements may not be terminated without the approval of the fund’s board of trustees.
[50] Total return for the period 1/1/2023 through 9/30/2023 was 3.79%.
[51] Most recent quarter with this return during the period of the chart.
[52] Total return for the period 1/1/2023 through 9/30/2023 was 3.79%.
[53] The adviser has contractually agreed to waive fees and reimburse other fund expenses through December 31, 2024, so that total annual fund operating expenses, after waivers, do not exceed 0.45%. These fee waivers and expense reimbursements may be terminated at any time after December 31, 2024 at the discretion of the adviser. Prior to that time, such waivers and reimbursements may not be terminated without the approval of the fund’s board of directors.
[54] Total return for the period 1/1/2023 through 9/30/2023 was 3.55%.
[55] Most recent quarter with this return during the period of the chart.
[56] Total return for the period 1/1/2023 through 9/30/2023 was 3.55%.
[57] The adviser has contractually agreed to waive fees and reimburse other fund expenses through December 31, 2024, so that total annual fund operating expenses, after waivers, do not exceed 0.20%. These fee waivers and expense reimbursements may be terminated at any time after December 31, 2024, at the discretion of the adviser. Prior to that time, such waivers and reimbursements may not be terminated without the approval of the fund’s board of directors.
[58] Total return for the period 1/1/2023 through 9/30/2023 was 3.74%.
[59] Most recent quarter with this return during the period of the chart.
[60] Total return for the period 1/1/2023 through 9/30/2023 was 3.74%.
[61] The adviser has contractually agreed to waive fees and reimburse other fund expenses through December 31, 2024, so that total annual fund operating expenses, after waivers, do not exceed 0.75%. These fee waivers and expense reimbursements may be terminated at any time after December 31, 2024 at the discretion of the adviser. Prior to that time, such waivers and reimbursements may not be terminated without the approval of the fund’s board of trustees.
[62] Total return for the period 1/1/2023 through 9/30/2023 was 1.85%.
[63] Most recent quarter with this return during the period of the chart.
[64] Total return for the period 1/1/2023 through 9/30/2023 was 1.85%.
[65] Prior to October 14, 2016, the fund was named Tax Free Obligations Fund.
[66] The adviser has contractually agreed to waive fees and reimburse other fund expenses through December 31, 2024, so that total annual fund operating expenses, after waivers, do not exceed 0.40%. These fee waivers and expense reimbursements may be terminated at any time after December 31, 2024 at the discretion of the adviser. Prior to that time, such waivers and reimbursements may not be terminated without the approval of the fund’s board of trustees.
[67] Total return for the period 1/1/2023 through 9/30/2023 was 2.12%.
[68] Most recent quarter with this return during the period of the chart.
[69] Total return for the period 1/1/2023 through 9/30/2023 was 2.12%.
[70] The adviser has contractually agreed to waive fees and reimburse other fund expenses through December 31, 2024, so that total annual fund operating expenses, after waivers, do not exceed 0.30%. These fee waivers and expense reimbursements may be terminated at any time after December 31, 2024 at the discretion of the adviser. Prior to that time, such waivers and reimbursements may not be terminated without the approval of the fund’s board of trustees.
[71] Total return for the period 1/1/2023 through 9/30/2023 was 2.20%.
[72] Most recent quarter with this return during the period of the chart.
[73] Total return for the period 1/1/2023 through 9/30/2023 was 2.20%.
[74] Prior to October 14, 2016, the fund was named Tax Free Obligations Fund.
[75] The adviser has contractually agreed to waive fees and reimburse other fund expenses through December 31, 2024, so that total annual fund operating expenses, after waivers, do not exceed 0.45%. These fee waivers and expense reimbursements may be terminated at any time after December 31, 2024 at the discretion of the adviser. Prior to that time, such waivers and reimbursements may not be terminated without the approval of the fund’s board of directors.
[76] Total return for the period 1/1/2023 through 9/30/2023 was 2.08%.
[77] Most recent quarter with this return during the period of the chart.
[78] Total return for the period 1/1/2023 through 9/30/2023 was 2.08%.
[79] Prior to October 14, 2016, the fund was named Tax Free Obligations Fund.
[80] The adviser has contractually agreed to waive fees and reimburse other fund expenses through December 31, 2024, so that total annual fund operating expenses, after waivers, do not exceed 0.20%. These fee waivers and expense reimbursements may be terminated at any time after December 31, 2024, at the discretion of the adviser. Prior to that time, such waivers and reimbursements may not be terminated without the approval of the fund’s board of directors.
[81] Total return for the period 1/1/2023 through 9/30/2023 was 2.27%.
[82] Most recent quarter with this return during the period of the chart.
[83] Total return for the period 1/1/2023 through 9/30/2023 was 2.27%.
[84] Prior to October 14, 2016, the fund was named Tax Free Obligations Fund.
[85] The adviser has contractually agreed to waive fees and reimburse other fund expenses through December 31, 2024, so that total annual fund operating expenses, after waivers, do not exceed 0.75%. These fee waivers and expense reimbursements may be terminated at any time after December 31, 2024 at the discretion of the adviser. Prior to that time, such waivers and reimbursements may not be terminated without the approval of the fund’s board of trustees.
[86] Total return for the period 1/1/2023 through 9/30/2023 was 3.21%.
[87] Most recent quarter with this return during the period of the chart.
[88] Total return for the period 1/1/2023 through 9/30/2023 was 3.21%.
[89] The adviser has contractually agreed to waive fees and reimburse other fund expenses through December 31, 2024, so that total annual fund operating expenses, after waivers, do not exceed 0.60%. These fee waivers and expense reimbursements may be terminated at any time after December 31, 2024 at the discretion of the adviser. Prior to that time, such waivers and reimbursements may not be terminated without the approval of the fund’s board of directors.
[90] Total return for the period 1/1/2023 through 9/30/2023 was 3.32%.
[91] Most recent quarter with this return during the period of the chart.
[92] Total return for the period 1/1/2023 through 9/30/2023 was 3.32%.
[93] The adviser has contractually agreed to waive fees and reimburse other fund expenses through December 31, 2024, so that total annual fund operating expenses, after waivers, do not exceed 0.18%. These fee waivers and expense reimbursements may be terminated at any time after December 31, 2024, at the discretion of the adviser. Prior to that time, such waivers and reimbursements may not be terminated without the approval of the fund’s board of trustees.
[94] Total return for the period 1/1/2023 through 9/30/2023 was 3.67%.
[95] Most recent quarter with this return during the period of the chart.
[96] Total return for the period 1/1/2023 through 9/30/2023 was 3.67%.
[97] The adviser has contractually agreed to waive fees and reimburse other fund expenses through December 31, 2024, so that total annual fund operating expenses, after waivers, do not exceed 0.40%. These fee waivers and expense reimbursements may be terminated at any time after December 31, 2024 at the discretion of the adviser. Prior to that time, such waivers and reimbursements may not be terminated without the approval of the fund’s board of trustees.
[98] Total return for the period 1/1/2023 through 9/30/2023 was 3.48%.
[99] Most recent quarter with this return during the period of the chart.
[100] Total return for the period 1/1/2023 through 9/30/2023 was 3.48%.
[101] The adviser has contractually agreed to waive fees and reimburse other fund expenses through December 31, 2024, so that total annual fund operating expenses, after waivers, do not exceed 0.30%. These fee waivers and expense reimbursements may be terminated at any time after December 31, 2024 at the discretion of the adviser. Prior to that time, such waivers and reimbursements may not be terminated without the approval of the fund’s board of trustees.
[102] Total return for the period 1/1/2023 through 9/30/2023 was 3.55%.
[103] Most recent quarter with this return during the period of the chart.
[104] Total return for the period 1/1/2023 through 9/30/2023 was 3.55%.
[105] The adviser has contractually agreed to waive fees and reimburse other fund expenses through December 31, 2024, so that total annual fund operating expenses, after waivers, do not exceed 0.14%. These fee waivers and expense reimbursements may be terminated at any time after December 31, 2024 at the discretion of the adviser. Prior to that time, such waivers and reimbursements may not be terminated without the approval of the fund’s board of trustees.
[106] Total return for the period 1/1/2023 through 9/30/2023 was 3.68%.
[107] Most recent quarter with this return during the period of the chart.
[108] Total return for the period 1/1/2023 through 9/30/2023 was 3.68%.
[109] The adviser has contractually agreed to waive fees and reimburse other fund expenses through December 31, 2024, so that total annual fund operating expenses, after waivers, do not exceed 0.45%. These fee waivers and expense reimbursements may be terminated at any time after December 31, 2024 at the discretion of the adviser. Prior to that time, such waivers and reimbursements may not be terminated without the approval of the fund’s board of directors.
[110] Total return for the period 1/1/2023 through 9/30/2023 was 3.44%.
[111] Most recent quarter with this return during the period of the chart.
[112] Total return for the period 1/1/2023 through 9/30/2023 was 3.44%.
[113] The adviser has contractually agreed to waive fees and reimburse other fund expenses through December 31, 2024, so that total annual fund operating expenses, after waivers, do not exceed 0.18%. These fee waivers and expense reimbursements may be terminated at any time after December 31, 2024, at the discretion of the adviser. Prior to that time, such waivers and reimbursements may not be terminated without the approval of the fund’s board of directors.
[114] Total return for the period 1/1/2023 through 9/30/2023 was 3.65%.
[115] Most recent quarter with this return during the period of the chart.
[116] Total return for the period 1/1/2023 through 9/30/2023 was 3.65%.
[117] The adviser has contractually agreed to waive fees and reimburse other fund expenses through December 31, 2024, so that total annual fund operating expenses, after waivers, do not exceed 0.75%. These fee waivers and expense reimbursements may be terminated at any time after December 31, 2024 at the discretion of the adviser. Prior to that time, such waivers and reimbursements may not be terminated without the approval of the fund’s board of trustees.
[118] Total return for the period 1/1/2023 through 9/30/2023 was 3.11%.
[119] Most recent quarter with this return during the period of the chart.
[120] Total return for the period 1/1/2023 through 9/30/2023 was 3.11%.
[121] The adviser has contractually agreed to waive fees and reimburse other fund expenses through December 31, 2024, so that total annual fund operating expenses, after waivers, do not exceed 0.60%. These fee waivers and expense reimbursements may be terminated at any time after December 31, 2024 at the discretion of the adviser. Prior to that time, such waivers and reimbursements may not be terminated without the approval of the fund’s board of trustees.
[122] Total return for the period 1/1/2023 through 9/30/2023 was 3.23%.
[123] Most recent quarter with this return during the period of the chart.
[124] Total return for the period 1/1/2023 through 9/30/2023 was 3.23%.
[125] The adviser has contractually agreed to waive fees and reimburse other fund expenses through December 31, 2024, so that total annual fund operating expenses, after waivers, do not exceed 0.40%. These fee waivers and expense reimbursements may be terminated at any time after December 31, 2024 at the discretion of the adviser. Prior to that time, such waivers and reimbursements may not be terminated without the approval of the fund’s board of trustees.
[126] Total return for the period 1/1/2023 through 9/30/2023 was 3.38%.
[127] Most recent quarter with this return during the period of the chart.
[128] Total return for the period 1/1/2023 through 9/30/2023 was 3.38%.
[129] The adviser has contractually agreed to waive fees and reimburse other fund expenses through December 31, 2024, so that total annual fund operating expenses, after waivers, do not exceed 0.30%. These fee waivers and expense reimbursements may be terminated at any time after December 31, 2024 at the discretion of the adviser. Prior to that time, such waivers and reimbursements may not be terminated without the approval of the fund’s board of trustees.
[130] Total return for the period 1/1/2023 through 9/30/2023 was 3.46%.
[131] Most recent quarter with this return during the period of the chart.
[132] Total return for the period 1/1/2023 through 9/30/2023 was 3.46%.
[133] The adviser has contractually agreed to waive fees and reimburse other fund expenses through December 31, 2024, so that total annual fund operating expenses, after waivers, do not exceed 0.45%. These fee waivers and expense reimbursements may be terminated at any time after December 31, 2024 at the discretion of the adviser. Prior to that time, such waivers and reimbursements may not be terminated without the approval of the fund’s board of directors.
[134] Total return for the period 1/1/2023 through 9/30/2023 was 3.34%.
[135] Most recent quarter with this return during the period of the chart.
[136] Total return for the period 1/1/2023 through 9/30/2023 was 3.34%.
[137] The adviser has contractually agreed to waive fees and reimburse other fund expenses through December 31, 2024, so that total annual fund operating expenses, after waivers, do not exceed 0.20%. These fee waivers and expense reimbursements may be terminated at any time after December 31, 2024, at the discretion of the adviser. Prior to that time, such waivers and reimbursements may not be terminated without the approval of the fund’s board of directors.
[138] Total return for the period 1/1/2023 through 9/30/2023 was 3.53%.
[139] Most recent quarter with this return during the period of the chart.
[140] Total return for the period 1/1/2023 through 9/30/2023 was 3.53%.
[141] The adviser has contractually agreed to waive fees and reimburse other fund expenses through December 31, 2024, so that total annual fund operating expenses, after waivers, do not exceed 0.40%. These fee waivers and expense reimbursements may be terminated at any time after December 31, 2024 at the discretion of the adviser. Prior to that time, such waivers and reimbursements may not be terminated without the approval of the fund’s board of trustees.
[142] Total return for the period 1/1/2023 through 9/30/2023 was 3.59%.
[143] Most recent quarter with this return during the period of the chart.
[144] Total return for the period 1/1/2023 through 9/30/2023 was 3.59%.
[145] Prior to October 14, 2016, the fund was named Prime Obligations Fund.
[146] The adviser has contractually agreed to waive fees and reimburse other fund expenses through December 31, 2024, so that total annual fund operating expenses, after waivers, do not exceed 0.30%. These fee waivers and expense reimbursements may be terminated at any time after December 31, 2024 at the discretion of the adviser. Prior to that time, such waivers and reimbursements may not be terminated without the approval of the fund’s board of trustees.
[147] Total return for the period 1/1/2023 through 9/30/2023 was 3.65%.
[148] Most recent quarter with this return during the period of the chart.
[149] Total return for the period 1/1/2023 through 9/30/2023 was 3.65%.
[150] Prior to October 14, 2016, the fund was named Prime Obligations Fund.
[151] The adviser has contractually agreed to waive fees and reimburse other fund expenses through December 31, 2024, so that total annual fund operating expenses, after waivers, do not exceed 0.45%. These fee waivers and expense reimbursements may be terminated at any time after December 31, 2024 at the discretion of the adviser. Prior to that time, such waivers and reimbursements may not be terminated without the approval of the fund’s board of directors.
[152] Total return for the period 1/1/2023 through 9/30/2023 was 3.54%.
[153] Most recent quarter with this return during the period of the chart.
[154] Total return for the period 1/1/2023 through 9/30/2023 was 3.54%.
[155] Prior to October 14, 2016, the fund was named Prime Obligations Fund.
[156] The adviser has contractually agreed to waive fees and reimburse other fund expenses through December 31, 2024, so that total annual fund operating expenses, after waivers, do not exceed 0.20%. These fee waivers and expense reimbursements may be terminated at any time after December 31, 2024, at the discretion of the adviser. Prior to that time, such waivers and reimbursements may not be terminated without the approval of the fund’s board of directors.
[157] Total return for the period 1/1/2023 through 9/30/2023 was 3.73%.
[158] Most recent quarter with this return during the period of the chart.
[159] Total return for the period 1/1/2023 through 9/30/2023 was 3.73%.
[160] Prior to October 14, 2016, the fund was named Prime Obligations Fund.