Label	Element	Value
Risk Return Abstract	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	TOUCHSTONE FUNDS GROUP TRUST
Prospectus Date	rr_ProspectusDate	Aug. 31, 2023
Touchstone Sands Capital International Growth Equity Fund
Risk Return Abstract	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	<span style="color:#FFFFFF;font-family:Arial Narrow;font-size:14pt;margin-left:17pt;text-transform:uppercase;">Touchstone Sands Capital International Growth Equity Fund Summary</span>
Objective [Heading]	rr_ObjectiveHeading	<span style="color:#000000;font-family:Arial Narrow;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 International Growth Equity Fund (formerly, Touchstone International ESG Equity Fund) (the “Fund”) seeks long-term capital appreciation.
Expense [Heading]	rr_ExpenseHeading	<span style="color:#000000;font-family:Arial Narrow;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 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 19 and 41, 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="color:#000000;font-family:Arial Narrow;font-size:10.02pt;font-weight:bold;margin-left:0.0pt;">Shareholder Fees (fees paid directly from your investment)</span>
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	<span style="color:#000000;font-family:Arial Narrow;font-size:10.02pt;font-weight:bold;margin-left:0.0pt;">Annual Fund Operating Expenses (expenses that you pay </span><span style="color:#000000;font-family:Arial Narrow;font-size:10.02pt;font-weight:bold;margin-left:10pt;">each year as a percentage of the value of your investment)</span>
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	<span style="color:#000000;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 32% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	32.00%
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="color:#000000;font-family:Arial Narrow;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="color:#000000;font-family:Arial Narrow;font-size:10.02pt;font-weight:bold;">Assuming</span><span style="color:#000000;font-family:Arial Narrow;font-size:10.02pt;font-weight:bold;">No Redemption</span>
Strategy [Heading]	rr_StrategyHeading	<span style="color:#000000;font-family:Arial Narrow;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 (including borrowings for investment purposes) in equity and equity-related securities issued by companies in foreign countries. The Fund’s 80% policy is a non-fundamental investment policy that can be changed by the Fund upon 60 days’ prior notice to shareholders. The Fund invests primarily in a portfolio of equity securities such as common stock, preferred stock, and depositary receipts. The Fund will generally consider qualifying investments to be in companies of any size that are organized under the laws of, or maintain their principal place of business in a foreign country; have securities that are principally traded in such countries; or derive at least 50% of revenues or profits from, or have at least 50% of their productive assets, as determined by the Fund’s sub-adviser, Sands Capital Management, LLC (“Sands Capital”), in such countries. The Fund generally invests in a concentrated portfolio of 25 to 40 issuers, with position sizes weighted by the conviction Sands Capital has in the investment opportunity. Issuers are selected through fundamental research undertaken by Sands Capital.The Fund may also invest up to 30% of its assets in issuers in emerging market or frontier market countries. The Fund classifies emerging markets countries as those countries not included in the MSCI World Index, a developed market index. As of June 30, 2023, the countries in the MSCI World Index included: Australia, Austria, Belgium, Canada, Denmark, Finland, France, Germany, Hong Kong, Ireland, Israel, Italy, Japan, the Netherlands, New Zealand, Norway, Portugal, Singapore, Spain, Sweden, Switzerland, the United Kingdom, and the United States. The country composition of the MSCI World Index can change over time. Frontier markets are those emerging market countries that have the smallest, least mature economies and least developed capital markets.In selecting securities for the Fund, Sands Capital utilizes proprietary, fundamental, business-focused research to identify companies for investment that it believes have the capacity to generate sustainable, above-average growth over a five-year time horizon. This “bottom-up” approach to investment selection focuses on a company’s long-term business fundamentals, as opposed to sector or regional allocations. Therefore, the Fund may overweight certain geographies or sectors and may underweight other geographies or sectors relative to the stated benchmark. Sands Capital seeks to identify leading growth businesses that meet the following criteria:•Sustainable above-average earnings growth•Leadership position in a promising business space•Significant competitive advantage/unique business franchise•Clear mission and value-added focus•Financial strength•Rational valuation relative to the market and business prospectsAs part of the evaluation of a company, Sands Capital may consider 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 a company’s value creation potential.Sands Capital generally intends for the Fund’s investments to be held for an average term of three to five years, although the Fund may hold any investment for any length of time. Sands Capital generally considers selling a security when it no longer meets the investment criteria outlined above, for risk management purposes, or if a more attractive investment opportunity presents itself.
Risk [Heading]	rr_RiskHeading	<span style="color:#000000;font-family:Arial Narrow;font-size:12pt;font-weight:bold;text-decoration:underline;">The Fund’s Principal Risks</span>
Risk [Text Block]	rr_RiskTextBlock	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.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	<span style="color:#000000;font-family:Arial Narrow;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 MSCI All Country World ex-USA 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.On August 31, 2023, the Fund changed its name from the Touchstone International ESG Equity Fund to the Touchstone Sands Capital International Growth Equity Fund. The Fund also changed its principal investment strategies and its sub-adviser from Rockefeller & Co. LLC (“Rockefeller”) to Sands Capital, the Fund’s current sub-adviser, on August 31, 2023. The Fund’s performance shown below might have differed materially if Sands Capital had managed the Fund pursuant to its current principal investment strategies prior to August 31, 2023. In addition, on August 23, 2019, the Fund changed its sub-adviser from Miller/Howard Investments, Inc. (“Miller/Howard”) to Rockefeller.  Performance presented prior to August 23, 2019 is attributable to Miller/Howard.
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 MSCI All Country World ex-USA 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="color:#000000;font-family:Arial Narrow;font-size:10pt;font-weight:bold;">Touchstone Sands Capital International Growth Equity Fund — Class A 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 202017.65Worst Quarter:1st Quarter 2020(23.44
Performance Table Heading	rr_PerformanceTableHeading	<span style="color:#000000;font-family:Arial Narrow;font-size:10.02pt;font-weight:bold;margin-left:0.0pt;">Average Annual Total Returns</span><span style="color:#000000;font-family:Arial Narrow;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="color:#000000;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="color:#000000;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="color:#000000;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="color:#000000;font-family:Times New Roman;font-size:10pt;">The after-tax returns shown in the table are for Class A shares only. The after-tax returns for other classes of shares offered by the Fund will differ from the Class A shares’ after-tax returns. </span>
Performance Table Explanation after Tax Higher	rr_PerformanceTableExplanationAfterTaxHigher	<span style="color:#000000;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="color:#000000;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 A shares only. The after-tax returns for other classes of shares offered by the Fund will differ from the Class A 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.Class R6 shares commenced operations on August 31, 2023 and do not have a full calendar year of performance. Class R6 shares would have had substantially similar annual returns to Class A, Class C, Class Y and Institutional Class shares because the shares are invested in the same portfolio of securities and the annual returns differ only to the extent that the share classes do not have the same shareholder fees and operating expenses.The inception date of Institutional Class shares was August 23, 2019. Institutional Class shares’ performance was calculated using the historical performance of Class A shares for the periods prior to August 23, 2019. Performance for these periods has been restated to reflect the impact of the fees and expenses applicable to Institutional Class shares.
Touchstone Sands Capital International Growth Equity Fund | Equity Securities Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	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.
Touchstone Sands Capital International Growth Equity Fund | Preferred Stock Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	•Preferred Stock Risk: In the event an issuer is liquidated or declares bankruptcy, the claims of owners of bonds take precedence over the claims of those who own preferred and common stock. If interest rates rise, the fixed dividend on preferred stocks may be less attractive, causing the price of preferred stocks to decline.
Touchstone Sands Capital International Growth Equity Fund | Foreign Securities Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	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.
Touchstone Sands Capital International Growth Equity Fund | Depositary Receipts Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	•Depositary Receipts Risk: Foreign receipts, which include American Depositary Receipts, Global Depositary Receipts, and European Depositary Receipts, are securities that evidence ownership interests in a security or a pool of securities issued by a foreign issuer. The risks of depositary receipts include many risks associated with investing directly in foreign securities.
Touchstone Sands Capital International Growth Equity Fund | Emerging Markets Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	•Emerging Markets Risk: Emerging markets may be more likely to experience political turmoil or rapid changes in market or economic conditions than more developed countries. In addition, the financial stability of issuers (including governments) in emerging market countries may be more precarious than that of issuers in other countries.
Touchstone Sands Capital International Growth Equity Fund | Frontier Markets Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	•Frontier Markets Risk: Frontier markets have similar risks to emerging markets, except that these risks are often magnified in a frontier market due to its smaller and less developed economy. As a result, frontier markets may experience greater changes in market or economic conditions, financial stability, price volatility, currency fluctuations, and other risks inherent in foreign securities.
Touchstone Sands Capital International Growth Equity Fund | Growth-Investing Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	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.
Touchstone Sands Capital International Growth Equity Fund | Management Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	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.
Touchstone Sands Capital International Growth Equity Fund | Economic and Market Events Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	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.
Touchstone Sands Capital International Growth Equity Fund | Sector Focus Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	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.
Touchstone Sands Capital International Growth Equity Fund | ESG Investing Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	ESG Investing Risk: The Fund's sub-adviser may consider ESG factors that it deems relevant or additive, along with other material factors and analysis, when selecting investments for the 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 countries. In addition, the Fund may be required to sell a security when it might otherwise be disadvantageous for it to do so.
Touchstone Sands Capital International Growth Equity Fund | Cyber Security Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Cyber Security Risk: 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 the Fund. The Fund has established risk management systems reasonably designed to seek to reduce the risks associated with cyber-events. However, there is no guarantee that the Fund will be able to prevent or mitigate the impact of any or all cyber-events.
Touchstone Sands Capital International Growth Equity 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
Management Fees	rr_ManagementFeesOverAssets	0.65%
Distribution and/or Shareholder Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other Expenses	rr_OtherExpensesOverAssets	0.69%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.59%
Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.42%)	[1]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	rr_NetExpensesOverAssets	1.17%	[1]
1 Year	rr_ExpenseExampleYear01	$ 613
3 Years	rr_ExpenseExampleYear03	938
5 Years	rr_ExpenseExampleYear05	1,285
10 Years	rr_ExpenseExampleYear10	$ 2,261
2013	rr_AnnualReturn2013	21.68%
2014	rr_AnnualReturn2014	11.34%
2015	rr_AnnualReturn2015	(10.50%)
2016	rr_AnnualReturn2016	17.42%
2017	rr_AnnualReturn2017	12.43%
2018	rr_AnnualReturn2018	(9.45%)
2019	rr_AnnualReturn2019	23.21%
2020	rr_AnnualReturn2020	12.70%
2021	rr_AnnualReturn2021	10.74%
2022	rr_AnnualReturn2022	(20.80%)
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	<span style="color:#000000;font-family:Arial Narrow;font-size:10.02pt;">Best Quarter:</span>
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2020
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	17.65%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	<span style="color:#000000;font-family:Arial Narrow;font-size:10.02pt;">Worst Quarter:</span>
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Mar. 31, 2020
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(23.44%)
1 Year	rr_AverageAnnualReturnYear01	(24.75%)
5 Years	rr_AverageAnnualReturnYear05	0.77%
10 Years	rr_AverageAnnualReturnYear10	5.22%
Touchstone Sands Capital International Growth Equity 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
Management Fees	rr_ManagementFeesOverAssets	0.65%
Distribution and/or Shareholder Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other Expenses	rr_OtherExpensesOverAssets	1.07%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	2.72%
Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.77%)	[1]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	rr_NetExpensesOverAssets	1.95%	[1]
1 Year	rr_ExpenseExampleYear01	$ 298
3 Years	rr_ExpenseExampleYear03	771
5 Years	rr_ExpenseExampleYear05	1,371
10 Years	rr_ExpenseExampleYear10	2,995
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	198
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	771
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	1,371
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	$ 2,995
1 Year	rr_AverageAnnualReturnYear01	(22.20%)
5 Years	rr_AverageAnnualReturnYear05	1.24%
10 Years	rr_AverageAnnualReturnYear10	5.22%
Touchstone Sands Capital International Growth Equity 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
Management Fees	rr_ManagementFeesOverAssets	0.65%
Distribution and/or Shareholder Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.65%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.30%
Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.40%)	[1]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	rr_NetExpensesOverAssets	0.90%	[1]
1 Year	rr_ExpenseExampleYear01	$ 92
3 Years	rr_ExpenseExampleYear03	373
5 Years	rr_ExpenseExampleYear05	675
10 Years	rr_ExpenseExampleYear10	$ 1,533
1 Year	rr_AverageAnnualReturnYear01	(20.49%)
5 Years	rr_AverageAnnualReturnYear05	2.28%
10 Years	rr_AverageAnnualReturnYear10	6.15%
Touchstone Sands Capital International Growth Equity 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
Management Fees	rr_ManagementFeesOverAssets	0.65%
Distribution and/or Shareholder Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.53%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.18%
Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.32%)	[1]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	rr_NetExpensesOverAssets	0.86%	[1]
1 Year	rr_ExpenseExampleYear01	$ 88
3 Years	rr_ExpenseExampleYear03	343
5 Years	rr_ExpenseExampleYear05	618
10 Years	rr_ExpenseExampleYear10	$ 1,403
1 Year	rr_AverageAnnualReturnYear01	(20.50%)
5 Years	rr_AverageAnnualReturnYear05	2.29%
10 Years	rr_AverageAnnualReturnYear10	6.16%
Touchstone Sands Capital International Growth Equity 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
Management Fees	rr_ManagementFeesOverAssets	0.65%
Distribution and/or Shareholder Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.51%	[2]
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.16%
Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(0.34%)	[1]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	rr_NetExpensesOverAssets	0.82%	[1]
1 Year	rr_ExpenseExampleYear01	$ 84
3 Years	rr_ExpenseExampleYear03	335
5 Years	rr_ExpenseExampleYear05	606
10 Years	rr_ExpenseExampleYear10	$ 1,379
Touchstone Sands Capital International Growth Equity Fund | Return After Taxes on Distributions | Class A
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	(24.97%)
5 Years	rr_AverageAnnualReturnYear05	(1.04%)
10 Years	rr_AverageAnnualReturnYear10	3.57%
Touchstone Sands Capital International Growth Equity Fund | Return After Taxes on Distributions and Sale of Shares | Class A
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	(14.18%)
5 Years	rr_AverageAnnualReturnYear05	0.72%
10 Years	rr_AverageAnnualReturnYear10	4.10%
Touchstone Sands Capital International Growth Equity Fund | MSCI All Country World ex-USA Index (reflects no deductions for fees, expenses or taxes)
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	(16.00%)
5 Years	rr_AverageAnnualReturnYear05	0.88%
10 Years	rr_AverageAnnualReturnYear10	3.80%

[1] 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 1.17%, 1.95%, 0.90%, 0.86% and 0.82%  of average daily net assets for Class A, Class C, Class Y, Institutional Class, and Class R6 shares, respectively. This contractual expense limitation is effective through September 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.

[2] Other Expenses for Class R6 shares are estimated based on fees and expenses incurred by Institutional Class shares of the Fund and expenses of similar Touchstone Funds. Class R6 shares commenced operations on August 31, 2023.