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Label Element Value
Risk Return Abstract rr_RiskReturnAbstract  
Registrant Name dei_EntityRegistrantName TOUCHSTONE FUNDS GROUP TRUST
Prospectus Date rr_ProspectusDate Jan. 27, 2023
Touchstone Sands Capital Select Growth 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 Sands Capital Select Growth 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 Sands Capital Select Growth Fund (the “Fund”) seeks long-term capital appreciation.
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. An investor transacting in Class R6 shares, which do not have any front-end sales charge, contingent deferred sales charge, or other asset-based fee for sales or distribution, may be required to pay a commission to a broker for effecting such transactions on an agency basis. Such commissions are not reflected in the table or in the “Example” below.
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</span><span style="font-family:Times New Roman;font-size:9pt;font-style:italic;"> 29, 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 45% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 45.00%
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 common stocks of U.S. companies that the sub-adviser, Sands Capital Management, LLC (“Sands Capital”), believes have above-average potential for revenue or earnings growth. This is a non-fundamental investment policy that the Fund can change upon 60 days’ prior notice to shareholders. The Fund emphasizes investments in large capitalization growth companies. The weighted-average market capitalization of these companies is generally in excess of $25 billion, and the Fund generally does not invest in companies that have a market capitalization of less than $2 billion. The Fund will typically own between 25 and 35 companies.As an integral part of the evaluation of a company, Sands Capital considers corporate governance, social, and environmental practices (collectively, “ESG”) when it believes such practices may be material to the long-term shareowner value creation potential of the company. Sands Capital utilizes proprietary ESG-related research to enhance its evaluation of portfolio businesses. The relevance and materiality of ESG practices vary and are highly dependent on the region, country, industry, and company. Sands Capital’s analysis of these practices is integrated into the investment decision-making process to the extent it believes they may affect the sustainability of a company’s value-creation potential.The Fund is non-diversified and invests a significant percentage of its assets in the securities of a single company or in the securities of a smaller number of companies than a diversified fund. The Fund may invest a high percentage of its assets in specific sectors of the market in order to achieve a potentially greater investment return.
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.Equity Securities Risk: The Fund is subject to the risk that stock prices will fall over short or extended periods of time. Individual companies may report poor results or be negatively affected by industry and/or economic trends and developments, or as a result of irregular and/or unexpected trading activity among retail investors. The prices of securities issued by these companies may decline in response to such developments, which could result in a decline in the value of the Fund’s shares.•Large-Cap Risk: Large-cap companies may be unable to respond quickly to new competitive challenges, such as changes in technology and consumer tastes, and also may not be able to attain the high growth rate of successful smaller companies, especially during extended periods of economic expansion.Growth-Investing Risk: Growth-oriented funds may underperform when value investing is in favor, and growth stocks may be more volatile than other stocks because they are more sensitive to investor perceptions of the issuing company’s growth of earnings potential.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.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.ESG Investing Risk: The Fund’s sub-adviser considers ESG factors that it deems relevant or additive, along with other material factors and analysis, when selecting investments for Fund. The Fund’s ESG criteria may cause the Fund to forgo opportunities to buy certain securities, or forgo opportunities to gain exposure to certain industries, sectors, regions and municipalities. In addition, the Fund may be required to sell a security when it might otherwise be disadvantageous for it to do so.Non-Diversification Risk: The Fund is non-diversified, which means that it may invest a greater percentage of its assets than a diversified mutual fund in the securities of a limited number of issuers. The use of a non- diversified investment strategy may increase the volatility of the Fund’s investment performance, as the Fund may be more susceptible to risks associated with a single economic, political or regulatory event.Sector Focus Risk: A fund that focuses its investments in the securities of a particular market sector is subject to the risk that adverse circumstances will have a greater impact on the fund than a fund that does not focus its investments in a particular sector.
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>
Risk Nondiversified Status [Text] rr_RiskNondiversifiedStatus <span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;margin-left:0%;">Non-Diversification Risk:</span><span style="color:#000000;font-family:Times New Roman;font-size:10pt;"> The Fund is non-diversified, which means that it may invest a greater percentage of its assets than a diversified mutual fund in the securities of a limited number of issuers. The use of a non- diversified investment strategy may increase the volatility of the Fund’s investment performance, as the Fund may be more susceptible to risks associated with a single economic, political or regulatory event.</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 Russell 1000® Growth 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 Russell 1000</span><span style="color:#000000;font-family:Times New Roman;font-size:6.5pt;position:relative;top:-4.25pt;">®</span><span style="color:#000000;font-family:Times New Roman;font-size:10pt;"> Growth 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 Sands Capital Select Growth 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 202037.63%Worst Quarter:2nd Quarter 2022(34.13)%
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 R6 and Institutional Class shares was September 1, 2020. Class R6 and Institutional Class shares’ performance was calculated using the historical performance of Class Z shares for the periods prior to September 1, 2020. Performance for these periods has been restated to reflect the impact of the fees and expenses applicable to Class R6 and Institutional Class shares.
Touchstone Sands Capital Select Growth Fund | Class A  
Risk Return Abstract rr_RiskReturnAbstract  
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 5.00%
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 0.60%
Distribution and/or Shareholder Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Liquidity Provider Expense rr_Component2OtherExpensesOverAssets 0.04%
Other Operating Expenses rr_Component3OtherExpensesOverAssets 0.24%
Total Other Expenses rr_OtherExpensesOverAssets 0.28%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.13%
Fee Waiver and/or Expense Reimbursement rr_FeeWaiverOrReimbursementOverAssets none [2]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement rr_NetExpensesOverAssets 1.13% [2]
1 Year rr_ExpenseExampleYear01 $ 609
3 Years rr_ExpenseExampleYear03 841
5 Years rr_ExpenseExampleYear05 1,091
10 Years rr_ExpenseExampleYear10 $ 1,806
1 Year rr_AverageAnnualReturnYear01 (53.04%)
5 Years rr_AverageAnnualReturnYear05 2.75%
10 Years rr_AverageAnnualReturnYear10 7.79%
Touchstone Sands Capital Select Growth 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 0.60%
Distribution and/or Shareholder Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Liquidity Provider Expense rr_Component2OtherExpensesOverAssets 0.04%
Other Operating Expenses rr_Component3OtherExpensesOverAssets 0.30%
Total Other Expenses rr_OtherExpensesOverAssets 0.34%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.94%
Fee Waiver and/or Expense Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.16%) [2]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement rr_NetExpensesOverAssets 1.78% [2]
1 Year rr_ExpenseExampleYear01 $ 281
3 Years rr_ExpenseExampleYear03 594
5 Years rr_ExpenseExampleYear05 1,032
10 Years rr_ExpenseExampleYear10 2,251
Expense Example, No Redemption, 1 Year rr_ExpenseExampleNoRedemptionYear01 181
Expense Example, No Redemption, 3 Years rr_ExpenseExampleNoRedemptionYear03 594
Expense Example, No Redemption, 5 Years rr_ExpenseExampleNoRedemptionYear05 1,032
Expense Example, No Redemption, 10 Years rr_ExpenseExampleNoRedemptionYear10 $ 2,251
1 Year rr_AverageAnnualReturnYear01 (51.36%)
5 Years rr_AverageAnnualReturnYear05 3.20%
10 Years rr_AverageAnnualReturnYear10 7.79%
Touchstone Sands Capital Select Growth 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 0.60%
Distribution and/or Shareholder Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Liquidity Provider Expense rr_Component2OtherExpensesOverAssets 0.04%
Other Operating Expenses rr_Component3OtherExpensesOverAssets 0.24%
Total Other Expenses rr_OtherExpensesOverAssets 0.28%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.88%
Fee Waiver and/or Expense Reimbursement rr_FeeWaiverOrReimbursementOverAssets none [2]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement rr_NetExpensesOverAssets 0.88% [2]
1 Year rr_ExpenseExampleYear01 $ 90
3 Years rr_ExpenseExampleYear03 281
5 Years rr_ExpenseExampleYear05 488
10 Years rr_ExpenseExampleYear10 $ 1,084
1 Year rr_AverageAnnualReturnYear01 (50.42%)
5 Years rr_AverageAnnualReturnYear05 4.23%
10 Years rr_AverageAnnualReturnYear10 8.70%
Touchstone Sands Capital Select Growth 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 0.60%
Distribution and/or Shareholder Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.24%
Liquidity Provider Expense rr_Component2OtherExpensesOverAssets 0.04%
Other Operating Expenses rr_Component3OtherExpensesOverAssets 0.31%
Total Other Expenses rr_OtherExpensesOverAssets 0.35%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.19%
Fee Waiver and/or Expense Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.01%) [2]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement rr_NetExpensesOverAssets 1.18% [2]
1 Year rr_ExpenseExampleYear01 $ 120
3 Years rr_ExpenseExampleYear03 377
5 Years rr_ExpenseExampleYear05 653
10 Years rr_ExpenseExampleYear10 $ 1,442
2013 rr_AnnualReturn2013 40.60%
2014 rr_AnnualReturn2014 7.90%
2015 rr_AnnualReturn2015 (0.02%)
2016 rr_AnnualReturn2016 (9.05%)
2017 rr_AnnualReturn2017 34.22%
2018 rr_AnnualReturn2018 5.33%
2019 rr_AnnualReturn2019 32.34%
2020 rr_AnnualReturn2020 69.23%
2021 rr_AnnualReturn2021 4.03%
2022 rr_AnnualReturn2022 (50.56%)
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 37.63%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel <span style="font-family:Arial;font-size:10.02pt;">Worst Quarter:</span>
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Jun. 30, 2022
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (34.13%)
1 Year rr_AverageAnnualReturnYear01 (50.56%)
5 Years rr_AverageAnnualReturnYear05 3.94%
10 Years rr_AverageAnnualReturnYear10 8.43%
Touchstone Sands Capital Select Growth 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 0.60%
Distribution and/or Shareholder Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Liquidity Provider Expense rr_Component2OtherExpensesOverAssets 0.04%
Other Operating Expenses rr_Component3OtherExpensesOverAssets 0.19%
Total Other Expenses rr_OtherExpensesOverAssets 0.23%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.83%
Fee Waiver and/or Expense Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.01%) [2]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement rr_NetExpensesOverAssets 0.82% [2]
1 Year rr_ExpenseExampleYear01 $ 84
3 Years rr_ExpenseExampleYear03 264
5 Years rr_ExpenseExampleYear05 460
10 Years rr_ExpenseExampleYear10 $ 1,024
1 Year rr_AverageAnnualReturnYear01 (50.37%)
5 Years rr_AverageAnnualReturnYear05 4.13%
10 Years rr_AverageAnnualReturnYear10 8.53%
Touchstone Sands Capital Select Growth Fund | Class R6  
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 0.60%
Distribution and/or Shareholder Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Liquidity Provider Expense rr_Component2OtherExpensesOverAssets 0.04%
Other Operating Expenses rr_Component3OtherExpensesOverAssets 0.15%
Total Other Expenses rr_OtherExpensesOverAssets 0.19%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.79%
Fee Waiver and/or Expense Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.03%) [2]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement rr_NetExpensesOverAssets 0.76% [2]
1 Year rr_ExpenseExampleYear01 $ 78
3 Years rr_ExpenseExampleYear03 249
5 Years rr_ExpenseExampleYear05 436
10 Years rr_ExpenseExampleYear10 $ 975
1 Year rr_AverageAnnualReturnYear01 (50.37%) [3]
5 Years rr_AverageAnnualReturnYear05 4.13% [3]
10 Years rr_AverageAnnualReturnYear10 8.53% [3]
Touchstone Sands Capital Select Growth Fund | Return After Taxes on Distributions | Class Z  
Risk Return Abstract rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 (50.56%)
5 Years rr_AverageAnnualReturnYear05 0.80%
10 Years rr_AverageAnnualReturnYear10 5.55%
Touchstone Sands Capital Select Growth Fund | Return After Taxes on Distributions and Sale of Shares | Class Z  
Risk Return Abstract rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 (29.93%)
5 Years rr_AverageAnnualReturnYear05 3.69%
10 Years rr_AverageAnnualReturnYear10 6.94%
Touchstone Sands Capital Select Growth Fund | Russell 1000® Growth Index (reflects no deductions for fees, expenses or taxes)  
Risk Return Abstract rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 (29.14%)
5 Years rr_AverageAnnualReturnYear05 10.96%
10 Years rr_AverageAnnualReturnYear10 14.10%
[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 1.13%, 1.74%, 0.90%, 1.14%, 0.78%, and 0.72% of average daily net assets for Classes A, C, Y, Z, Institutional Class and Class R6 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 the Adviser 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.
[3] An investor transacting in Class R6 shares may be required to pay a commission to a broker for effecting such transactions on an agency basis. Such commissions will not be reflected in the table.