Label	Element	Value
Risk Return Abstract	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	TOUCHSTONE FUNDS GROUP TRUST
Prospectus Date	rr_ProspectusDate	Jan. 27, 2023
Touchstone Ultra Short Duration Fixed Income Fund
Risk Return Abstract	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	<span style="color:#FFFFFF;font-family:Arial;font-size:14pt;margin-left:17pt;text-transform:uppercase;">Touchstone Ultra Short Duration Fixed Income Fund Summary</span>
Objective [Heading]	rr_ObjectiveHeading	<span style="color:#000000;font-family:Arial;font-size:12pt;font-weight:bold;text-decoration:underline;">The Fund’s Investment Goal</span>
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Touchstone Ultra Short Duration Fixed Income Fund (the “Fund”) seeks maximum total return consistent with the preservation of capital.
Expense [Heading]	rr_ExpenseHeading	<span style="color:#000000;font-family:Arial;font-size:12pt;font-weight:bold;text-decoration:underline;">The Fund’s Fees and Expenses</span>
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. You may qualify for sales charge discounts for Class A shares of Touchstone equity funds and Touchstone fixed income funds if you and your family invest, or agree to invest in the future, at least $25,000 or $50,000, respectively, in Touchstone funds. More information about these and other discounts is available from your financial professional, in the section titled “Choosing a Class of Shares” in the Fund’s prospectus and Statement of Additional Information (“SAI”) on pages 100 and 101, respectively, and in Appendix A–Intermediary-Specific Sales Charge Waivers and Discounts to the Fund's prospectus.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	<span style="font-family:Arial;font-size:10.02pt;font-weight:bold;margin-left:0.0pt;">Shareholder Fees (fees paid directly from your </span><span style="font-family:Arial;font-size:10.02pt;font-weight:bold;margin-left:10pt;">investment)</span>
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	<span style="font-family:Arial;font-size:10.02pt;font-weight:bold;margin-left:0.0pt;">Annual Fund Operating Expenses (expenses </span><span style="font-family:Arial;font-size:10.02pt;font-weight:bold;margin-left:10pt;">that you pay each year as a percentage of the </span><span style="font-family:Arial;font-size:10.02pt;font-weight:bold;margin-left:10pt;">value of your investment)</span>
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	<span style="font-family:Times New Roman;font-size:9pt;font-style:italic;">January 29, </span><span style="font-family:Times New Roman;font-size:9pt;font-style:italic;">2024</span>
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	<span style="font-family:Times New Roman;font-size:10pt;font-weight:bold;margin-left:0%;">Portfolio Turnover. </span>
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Fund pays transaction costs, such as brokerage commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in total annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 52% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	52.00%
Expense Breakpoint Discounts [Text]	rr_ExpenseBreakpointDiscounts	<span style="font-family:Times New Roman;font-size:10pt;"> You may qualify for sales charge discounts for Class A shares of Touchstone equity funds and Touchstone fixed income funds if you and your family invest, or agree to invest in the future, at least $25,000 or </span><span style="font-family:Times New Roman;font-size:10pt;">$50,000</span><span style="font-family:Times New Roman;font-size:10pt;">, respectively, in Touchstone funds.</span>
Expense Breakpoint, Minimum Investment Required [Amount]	rr_ExpenseBreakpointMinimumInvestmentRequiredAmount	$ 50,000
Expense Example [Heading]	rr_ExpenseExampleHeading	<span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;margin-left:0%;">Example. </span>
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then, except as indicated, redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year, that the Fund’s operating expenses remain the same and that all fee waivers or expense limits for the Fund will expire after one year. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example by, Year, Caption [Text]	rr_ExpenseExampleByYearCaption	<span style="font-family:Arial;font-size:10.02pt;font-weight:bold;">Assuming Redemption at End of Period</span>
Expense Example, No Redemption, By Year, Caption [Text]	rr_ExpenseExampleNoRedemptionByYearCaption	<span style="font-family:Arial;font-size:10.02pt;font-weight:bold;">Assuming</span><span style="font-family:Arial;font-size:10.02pt;font-weight:bold;">No Redemption</span>
Strategy [Heading]	rr_StrategyHeading	<span style="color:#000000;font-family:Arial;font-size:12pt;font-weight:bold;text-decoration:underline;">The Fund’s Principal Investment Strategies</span>
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	The Fund invests, under normal market conditions, at least 80% of its assets in fixed-income securities. This is a non-fundamental investment policy that can be changed by the Fund upon 60 days’ prior notice to shareholders. The Fund invests in a diversified portfolio of securities of different maturities including U.S. Treasury securities, U.S. government agency securities, securities of U.S. government-sponsored enterprises, corporate bonds (including those of foreign issuers), mortgage-backed securities, commercial mortgage-backed securities, asset-backed securities, municipal bonds, collateralized loan obligations and cash equivalent securities including repurchase agreements, commercial paper and variable rate demand notes.The Fund invests only in investment-grade debt securities. Investment-grade debt securities are those having a rating of BBB-/Baa3 or higher from a Nationally Recognized Statistical Rating Organization (“NRSRO”) or, if a rating is not available, deemed to be of comparable quality by the sub-adviser, Fort Washington Investment Advisors, Inc. (“Fort Washington”). The Fund’s investment policies are based on credit ratings at the time of purchase.In selecting investments for the Fund, Fort Washington chooses fixed-income securities that it believes are attractively priced relative to the market or to similar instruments. In addition, Fort Washington considers the “effective duration” of the Fund’s entire portfolio. Effective duration is a measure of a security’s price volatility or the risk associated with changes in interest rates. While the Fund may invest in securities with any maturity or duration, Fort Washington seeks to maintain an effective duration for the Fund of one year or less under normal market conditions.The Fund may engage in frequent and active trading of securities as a part of its principal investment strategy.
Risk [Heading]	rr_RiskHeading	<span style="color:#000000;font-family:Arial;font-size:12pt;font-weight:bold;text-decoration:underline;">The Fund’s Principal Risks</span>
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	The Fund’s share price will fluctuate. You could lose money on your investment in the Fund and the Fund could also return less than other investments. Investments in the Fund are not bank guaranteed, are not deposits, and are not insured by the Federal Deposit Insurance Corporation or any other federal government agency. As with any mutual fund, there is no guarantee that the Fund will achieve its investment goal. You can find more information about the Fund’s investments and risks under the “Principal Investment Strategies and Risks” section of the Fund’s prospectus. The Fund is subject to the principal risks summarized below.Fixed-Income Risk: The market value of the Fund’s fixed-income securities responds to economic developments, particularly interest rate changes, as well as to perceptions about the creditworthiness of individual issuers, including governments. Generally, the Fund’s fixed-income securities will decrease in value if interest rates rise and increase in value if interest rates fall. Normally, the longer the maturity or duration of the fixed-income securities the Fund owns, the more sensitive the value of the Fund’s shares will be to changes in interest rates.•Asset-Backed Securities Risk: Asset-backed securities are fixed-income securities backed by other assets such as credit card, automobile or consumer loan receivables, retail installment loans, or participations in pools of leases. The values of these securities are sensitive to changes in the credit quality of the underlying collateral, the credit strength of any credit enhancement feature, changes in interest rates, and, at times, the financial condition of the issuer.•Credit Risk: The fixed-income securities in the Fund’s portfolio are subject to the possibility that a deterioration, whether sudden or gradual, in the financial condition of an issuer, or a deterioration in general economic conditions, could cause an issuer to fail to make timely payments of principal or interest, when due. This may cause the issuer’s securities to decline in value.•Interest Rate Risk: In general, when interest rates rise, the prices of debt securities fall, and when interest rates fall, the prices of debt securities rise. The price volatility of a debt security also depends on its maturity. Longer-term securities are generally more volatile, so the longer the average maturity or duration of these securities, the greater their price risk. Duration is a measure used to determine the sensitivity of a security’s price to changes in interest rates that incorporates a security’s yield, coupon, final maturity, and call features, among other characteristics. The longer a fixed-income security’s duration, the more sensitive it will be to changes in interest rates. Maturity, on the other hand, is the date on which a fixed-income security becomes due for payment of principal. Recent and potential future changes in government policy may affect interest rates.•Investment-Grade Debt Securities Risk: Investment-grade debt securities may be downgraded by a NRSRO to below-investment-grade status, which would increase the risk of holding these securities. Investment-grade debt securities rated in the lowest rating category by a NRSRO involve a higher degree of risk than fixed-income securities with higher credit ratings.•Mortgage-Backed Securities Risk: Mortgage-backed securities are fixed-income securities representing an interest in a pool of underlying mortgage loans. Mortgage-backed securities are sensitive to changes in interest rates, but may respond to these changes differently from other fixed-income securities due to the possibility of prepayment of the underlying mortgage loans. Mortgage-backed securities may fluctuate in price based on deterioration in the value of the collateral underlying the pool of mortgage loans, which may result in the collateral being worth less than the remaining principal amount owed on the mortgages in the pool.•Prepayment Risk: The risk that a debt security may be paid off and proceeds reinvested earlier than anticipated. Prepayment impacts both the interest rate sensitivity of the underlying asset, such as an asset-backed or mortgage-backed security and its cash flow projections. Therefore, prepayment risk may make it difficult to calculate the average duration of the Fund’s asset- or mortgage-backed securities which in turn would make it difficult to assess the interest rate risk of the Fund.•U.S. Government Securities Risk: Certain U.S. government securities are backed by the right of the issuer to borrow from the U.S. Treasury while others are supported only by the credit of the issuer or instrumentality. While the U.S. government is able to provide financial support to U.S. government-sponsored agencies or instrumentalities, no assurance can be given that it will always do so. Such securities are generally neither issued nor guaranteed by the U.S. Treasury.Management Risk: In managing the Fund’s portfolio, the Adviser engages one or more sub-advisers to make investment decisions for a portion of or the entire portfolio. There is a risk that the Adviser may be unable to identify and retain sub-advisers who achieve superior investment returns relative to other similar sub-advisers.Collateralized Loan Obligations Risk: Typically, collateralized loan obligations are privately offered and sold, and thus are not registered under the securities laws. As a result, the Fund may in certain circumstances characterize its investments in collateralized loan obligations as illiquid. Collateralized loan obligations are subject to the typical risks associated with debt instruments (i.e., interest rate risk and credit risk). Additional risks of collateralized loan obligations include the possibility that distributions from collateral securities will be insufficient to make interest or other payments, the potential for a decline in the quality of the collateral, and the possibility that the Fund may invest in a subordinate tranche of a collateralized loan obligation.Economic and Market Events Risk: Events in the U.S. and global financial markets, including actions taken by the U.S. Federal Reserve or foreign central banks to stimulate or stabilize economic growth, may at times, and for varying periods of time, result in unusually high market volatility, which could negatively impact the Fund’s performance and cause the Fund to experience illiquidity, shareholder redemptions, or other potentially adverse effects. Reduced liquidity in credit and fixed-income markets could negatively affect issuers worldwide. Financial institutions could suffer losses as interest rates rise or economic conditions deteriorate. In addition, the Funds' service providers are susceptible to operational and information or cyber security risks that could result in losses to a Fund and its shareholders. Cyber security breaches are either intentional or unintentional events that allow an unauthorized party to gain access to Fund assets, customer data, or proprietary information, or cause a Fund or Fund service provider to suffer data corruption or lose operational functionality. A cyber security breach could result in the loss or theft of customer data or funds, loss or theft of proprietary information or corporate data, physical damage to a computer or network system, or costs associated with system repairs, any of which could have a substantial impact on a Fund. Such incidents could affect issuers in which a Fund invests, thereby causing the Fund’s investments to lose value.Foreign Securities Risk: Investing in foreign securities poses additional risks since political and economic events unique in a country or region will affect those markets and their issuers, while such events may not necessarily affect the U.S. economy or issuers located in the United States. In addition, investments in foreign securities are generally denominated in foreign currency. As a result, changes in the value of those currencies compared to the U.S. dollar may affect (positively or negatively) the value of the Fund’s investments. There are also risks associated with foreign accounting standards, government regulation, market information, and clearance and settlement procedures. Foreign markets may be less liquid and more volatile than U.S. markets and offer less protection to investors.Municipal Securities Risk: The value of municipal securities may be affected by uncertainties in the municipal market related to legislation or litigation involving the taxation of municipal securities or the rights of municipal securities holders in the event of bankruptcy. In addition, a downturn in the national economy may negatively impact the economic performance of issuers of municipal securities, and may increase the likelihood that issuers of securities in which the Fund may invest may be unable to meet their obligations. Also, some municipal obligations may be backed by a letter of credit issued by a bank or other financial institution. Adverse developments affecting banks or other financial institutions could have a negative effect on the value of the Fund’s portfolio securities.Portfolio Turnover Risk: Frequent and active trading may result in greater expenses to the Fund, which may lower the Fund’s performance and may result in the realization of substantial capital gains, including net short-term capital gains. As a result, high portfolio turnover may reduce the Fund’s returns.Repurchase Agreement Risk: Under all repurchase agreements entered into by the Fund, the Fund’s custodian or its agent must take possession of the underlying collateral. However, if the counterparty defaults, the Fund could realize a loss on the sale of the underlying security to the extent that the proceeds of sale, including accrued interest, are less than the resale price provided in the agreement including interest. In addition, even though the Bankruptcy Code provides protection for most repurchase agreements, if the seller should be involved in bankruptcy or insolvency proceedings, the Fund may incur delay and costs in selling the underlying security or may suffer a loss of principal and interest if the Fund is treated as an unsecured creditor and is required to return the underlying security to the seller’s estate. Repurchase agreements are considered loans by the Fund.
Risk Lose Money [Text]	rr_RiskLoseMoney	<span style="font-family:Times New Roman;font-size:10pt;">You could lose money on your investment in the Fund and the Fund could also return less than other investments.</span>
Risk Not Insured Depository Institution [Text]	rr_RiskNotInsuredDepositoryInstitution	<span style="font-family:Times New Roman;font-size:10pt;"> Investments in the Fund are not bank guaranteed, are not deposits, and are not insured by the Federal Deposit Insurance Corporation or any other federal government agency.</span>
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	<span style="color:#000000;font-family:Arial;font-size:12pt;font-weight:bold;text-decoration:underline;">The Fund’s Performance</span>
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The bar chart and performance table below illustrate some indication of the risks and volatility of an investment in the Fund by showing changes in the Fund’s performance from calendar year to calendar year and by showing how the Fund’s average annual total returns for one year, five years, and ten years compare with the ICE BofA 3-Month U.S. Treasury Bill Index and ICE BofA 1-Year U.S. Treasury Note Index. The bar chart does not reflect any sales charges, which would reduce your return.The performance table reflects any applicable sales charges. Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future. More recent performance information is available at no cost by visiting TouchstoneInvestments.com or by calling 1.800.543.0407.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	<span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:0%;">The bar chart and performance table below illustrate some indication of the risks and volatility of an investment in the Fund by showing </span><span style="color:#000000;font-family:Times New Roman;font-size:10pt;">changes in the Fund’s performance from calendar year to calendar year and by showing how the Fund’s average annual total returns for one year, five years, and ten years compare with the ICE BofA 3-Month U.S. Treasury Bill Index and ICE BofA 1-Year U.S. Treasury Note Index.</span>
Performance Availability Phone [Text]	rr_PerformanceAvailabilityPhone	<span style="color:#000000;font-family:Times New Roman;font-size:10pt;">1.800.543.0407</span>
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	<span style="color:#000000;font-family:Times New Roman;font-size:10pt;">TouchstoneInvestments.com</span>
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	<span style="color:#000000;font-family:Times New Roman;font-size:10pt;"> Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</span>
Bar Chart [Heading]	rr_BarChartHeading	<span style="font-family:Arial;font-size:10pt;font-weight:bold;">Touchstone Ultra Short Duration Fixed Income Fund — Class Z Shares Total Return as of December 31</span>
Bar Chart Does Not Reflect Sales Loads [Text]	rr_BarChartDoesNotReflectSalesLoads	<span style="color:#000000;font-family:Times New Roman;font-size:10pt;"> The bar chart does not reflect any sales charges, which would reduce your return.</span>
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Best Quarter:2nd Quarter 20202.47%Worst Quarter:1st Quarter 2020(2.48)%
Performance Table Heading	rr_PerformanceTableHeading	<span style="font-family:Arial;font-size:10.02pt;font-weight:bold;margin-left:0.0pt;">Average Annual Total Returns</span><span style="font-family:Arial;font-size:10.02pt;font-weight:bold;margin-left:0.0pt;">For the periods ended December 31, 2022</span>
Performance Table Does Reflect Sales Loads	rr_PerformanceTableDoesReflectSalesLoads	<span style="color:#000000;font-family:Times New Roman;font-size:10pt;">The performance table reflects any applicable sales charges.</span>
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	<span style="font-family:Times New Roman;font-size:10pt;margin-left:0%;">After-tax returns are calculated using the highest individual marginal federal income tax rates in effect on a given distribution reinvestment </span><span style="font-family:Times New Roman;font-size:10pt;">date and do not reflect the impact of state and local taxes. Your actual after- tax returns may differ from those shown and depend on your tax situation.</span>
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	<span style="font-family:Times New Roman;font-size:10pt;"> The after-tax returns do not apply to shares held in an individual retirement account (“IRA”), 401(k), or other tax-advantaged account.</span>
Performance Table One Class of after Tax Shown [Text]	rr_PerformanceTableOneClassOfAfterTaxShown	<span style="font-family:Times New Roman;font-size:10pt;"> The after-tax returns shown in the table are for Class Z shares only. The after-tax returns for other classes of shares offered by the Fund will differ from the Class Z shares’ after-tax returns. </span>
Performance Table Explanation after Tax Higher	rr_PerformanceTableExplanationAfterTaxHigher	<span style="font-family:Times New Roman;font-size:10pt;">The Return After Taxes on Distributions and Sale of Fund Shares may be greater </span><span style="font-family:Times New Roman;font-size:10pt;">than other returns for the same period due to a tax benefit of realizing a capital loss on the sale of Fund shares.</span>
Performance Table Narrative	rr_PerformanceTableNarrativeTextBlock	After-tax returns are calculated using the highest individual marginal federal income tax rates in effect on a given distribution reinvestment date and do not reflect the impact of state and local taxes. Your actual after- tax returns may differ from those shown and depend on your tax situation. The after-tax returns do not apply to shares held in an individual retirement account (“IRA”), 401(k), or other tax-advantaged account. The after-tax returns shown in the table are for Class Z shares only. The after-tax returns for other classes of shares offered by the Fund will differ from the Class Z shares’ after-tax returns. The Return After Taxes on Distributions and Sale of Fund Shares may be greater than other returns for the same period due to a tax benefit of realizing a capital loss on the sale of Fund shares.The inception date of Class S shares was October 27, 2017. Class S shares’ performance was calculated using the historical performance of Class Y shares for the periods prior to October 27, 2017. Performance for these periods has been restated to reflect the impact of the fees and expenses applicable to Class S shares.
Touchstone Ultra Short Duration Fixed Income Fund | Class A
Risk Return Abstract	rr_RiskReturnAbstract
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	2.00%
Maximum Deferred Sales Charge (Load) (as a percentage of original purchase price or the amount redeemed, whichever is less)	rr_MaximumDeferredSalesChargeOverOther	none
Wire Redemption Fee	rr_RedemptionFee	$ 15	[1]
Management Fees	rr_ManagementFeesOverAssets	0.25%
Distribution and/or Shareholder Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Total Other Expenses	rr_OtherExpensesOverAssets	0.24%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.74%
Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.05%)	[2]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	rr_NetExpensesOverAssets	0.69%	[2]
1 Year	rr_ExpenseExampleYear01	$ 269
3 Years	rr_ExpenseExampleYear03	427
5 Years	rr_ExpenseExampleYear05	598
10 Years	rr_ExpenseExampleYear10	$ 1,095
1 Year	rr_AverageAnnualReturnYear01	(1.92%)
5 Years	rr_AverageAnnualReturnYear05	0.81%
10 Years	rr_AverageAnnualReturnYear10	0.84%
Touchstone Ultra Short Duration Fixed Income Fund | Class C
Risk Return Abstract	rr_RiskReturnAbstract
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum Deferred Sales Charge (Load) (as a percentage of original purchase price or the amount redeemed, whichever is less)	rr_MaximumDeferredSalesChargeOverOther	1.00%
Wire Redemption Fee	rr_RedemptionFee	$ 15	[1]
Management Fees	rr_ManagementFeesOverAssets	0.25%
Distribution and/or Shareholder Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.75%
Total Other Expenses	rr_OtherExpensesOverAssets	0.48%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.48%
Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.29%)	[2]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	rr_NetExpensesOverAssets	1.19%	[2]
1 Year	rr_ExpenseExampleYear01	$ 221
3 Years	rr_ExpenseExampleYear03	439
5 Years	rr_ExpenseExampleYear05	780
10 Years	rr_ExpenseExampleYear10	1,744
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	121
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	439
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	780
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	$ 1,744
1 Year	rr_AverageAnnualReturnYear01	(1.37%)
5 Years	rr_AverageAnnualReturnYear05	0.74%
10 Years	rr_AverageAnnualReturnYear10	0.65%
Touchstone Ultra Short Duration Fixed Income Fund | Class S
Risk Return Abstract	rr_RiskReturnAbstract
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum Deferred Sales Charge (Load) (as a percentage of original purchase price or the amount redeemed, whichever is less)	rr_MaximumDeferredSalesChargeOverOther	none
Wire Redemption Fee	rr_RedemptionFee	$ 15	[1]
Management Fees	rr_ManagementFeesOverAssets	0.25%
Distribution and/or Shareholder Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.50%
Total Other Expenses	rr_OtherExpensesOverAssets	0.24%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.99%
Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.05%)	[2]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	rr_NetExpensesOverAssets	0.94%	[2]
1 Year	rr_ExpenseExampleYear01	$ 96
3 Years	rr_ExpenseExampleYear03	310
5 Years	rr_ExpenseExampleYear05	542
10 Years	rr_ExpenseExampleYear10	$ 1,208
1 Year	rr_AverageAnnualReturnYear01	(0.25%)
5 Years	rr_AverageAnnualReturnYear05	0.99%
10 Years	rr_AverageAnnualReturnYear10	0.79%
Touchstone Ultra Short Duration Fixed Income Fund | Class Y
Risk Return Abstract	rr_RiskReturnAbstract
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum Deferred Sales Charge (Load) (as a percentage of original purchase price or the amount redeemed, whichever is less)	rr_MaximumDeferredSalesChargeOverOther	none
Wire Redemption Fee	rr_RedemptionFee	$ 15	[1]
Management Fees	rr_ManagementFeesOverAssets	0.25%
Distribution and/or Shareholder Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Total Other Expenses	rr_OtherExpensesOverAssets	0.25%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.50%
Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.06%)	[2]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	rr_NetExpensesOverAssets	0.44%	[2]
1 Year	rr_ExpenseExampleYear01	$ 45
3 Years	rr_ExpenseExampleYear03	154
5 Years	rr_ExpenseExampleYear05	274
10 Years	rr_ExpenseExampleYear10	$ 622
1 Year	rr_AverageAnnualReturnYear01	0.36%
5 Years	rr_AverageAnnualReturnYear05	1.49%
10 Years	rr_AverageAnnualReturnYear10	1.31%
Touchstone Ultra Short Duration Fixed Income Fund | Class Z
Risk Return Abstract	rr_RiskReturnAbstract
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum Deferred Sales Charge (Load) (as a percentage of original purchase price or the amount redeemed, whichever is less)	rr_MaximumDeferredSalesChargeOverOther	none
Wire Redemption Fee	rr_RedemptionFee	$ 15	[1]
Management Fees	rr_ManagementFeesOverAssets	0.25%
Distribution and/or Shareholder Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Total Other Expenses	rr_OtherExpensesOverAssets	0.29%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.79%
Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.10%)	[2]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	rr_NetExpensesOverAssets	0.69%	[2]
1 Year	rr_ExpenseExampleYear01	$ 70
3 Years	rr_ExpenseExampleYear03	242
5 Years	rr_ExpenseExampleYear05	429
10 Years	rr_ExpenseExampleYear10	$ 969
2013	rr_AnnualReturn2013	0.54%
2014	rr_AnnualReturn2014	0.59%
2015	rr_AnnualReturn2015	0.40%
2016	rr_AnnualReturn2016	1.51%
2017	rr_AnnualReturn2017	1.31%
2018	rr_AnnualReturn2018	1.64%
2019	rr_AnnualReturn2019	3.07%
2020	rr_AnnualReturn2020	1.21%
2021	rr_AnnualReturn2021	0.21%
2022	rr_AnnualReturn2022	none
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	<span style="font-family:Arial;font-size:10.02pt;">Best Quarter:</span>
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2020
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	2.47%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	<span style="font-family:Arial;font-size:10.02pt;">Worst Quarter:</span>
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Mar. 31, 2020
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(2.48%)
1 Year	rr_AverageAnnualReturnYear01	none
5 Years	rr_AverageAnnualReturnYear05	1.22%
10 Years	rr_AverageAnnualReturnYear10	1.04%
Touchstone Ultra Short Duration Fixed Income Fund | Institutional Class
Risk Return Abstract	rr_RiskReturnAbstract
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum Deferred Sales Charge (Load) (as a percentage of original purchase price or the amount redeemed, whichever is less)	rr_MaximumDeferredSalesChargeOverOther	none
Wire Redemption Fee	rr_RedemptionFee	$ 15	[1]
Management Fees	rr_ManagementFeesOverAssets	0.25%
Distribution and/or Shareholder Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Total Other Expenses	rr_OtherExpensesOverAssets	0.21%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.46%
Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.07%)	[2]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	rr_NetExpensesOverAssets	0.39%	[2]
1 Year	rr_ExpenseExampleYear01	$ 40
3 Years	rr_ExpenseExampleYear03	141
5 Years	rr_ExpenseExampleYear05	251
10 Years	rr_ExpenseExampleYear10	$ 572
1 Year	rr_AverageAnnualReturnYear01	0.30%
5 Years	rr_AverageAnnualReturnYear05	1.52%
10 Years	rr_AverageAnnualReturnYear10	1.33%
Touchstone Ultra Short Duration Fixed Income Fund | Return After Taxes on Distributions | Class Z
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	(0.80%)
5 Years	rr_AverageAnnualReturnYear05	0.47%
10 Years	rr_AverageAnnualReturnYear10	0.36%
Touchstone Ultra Short Duration Fixed Income Fund | Return After Taxes on Distributions and Sale of Shares | Class Z
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	none
5 Years	rr_AverageAnnualReturnYear05	0.61%
10 Years	rr_AverageAnnualReturnYear10	0.50%
Touchstone Ultra Short Duration Fixed Income Fund | ICE BofA 3-Month U.S. Treasury Bill Index (reflects no deductions for fees, expenses or taxes)
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	1.46%
5 Years	rr_AverageAnnualReturnYear05	1.26%
10 Years	rr_AverageAnnualReturnYear10	0.76%
Touchstone Ultra Short Duration Fixed Income Fund | ICE BofA 1-Year U.S. Treasury Note Index (reflects no deductions for fees, expenses or taxes)
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	(1.02%)
5 Years	rr_AverageAnnualReturnYear05	1.09%
10 Years	rr_AverageAnnualReturnYear10	0.74%

[1] Up to $15.

[2] Touchstone Advisors, Inc. (the “Adviser” or “Touchstone Advisors”) and Touchstone Funds Group Trust (the “Trust”) have entered into a contractual expense limitation agreement whereby Touchstone Advisors will waive a portion of its fees or reimburse certain Fund expenses (excluding dividend and interest expenses relating to short sales; interest; taxes; brokerage commissions and other transaction costs; portfolio transaction and investment related expenses, including expenses associated with the Fund's liquidity providers; other expenditures which are capitalized in accordance with U.S. generally accepted accounting principles; the cost of “Acquired Fund Fees and Expenses”, if any; and other extraordinary expenses not incurred in the ordinary course of business) in order to limit annual Fund operating expenses to 0.69%, 1.19%, 0.94%, 0.44%, 0.69%, and 0.39% of average daily net assets for Classes A, C, S, Y, Z and Institutional Class shares, respectively. This contractual expense limitation is effective through January 29, 2024, but can be terminated by a vote of the Board of Trustees of the Trust (the “Board”) if it deems the termination to be beneficial to the Fund’s shareholders. The terms of the contractual expense limitation agreement provide that Touchstone Advisors is entitled to recoup, subject to approval by the Board, such amounts waived or reimbursed for a period of up to three years from the date on which Touchstone Advisors reduced its compensation or assumed expenses for the Fund. The Fund will make repayments to the Adviser only if such repayment does not cause the annual Fund operating expenses (after the repayment is taken into account) to exceed both (1) the expense cap in place when such amounts were waived or reimbursed and (2) the Fund’s current expense limitation.