Label	Element	Value
Risk Return Abstract	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	TOUCHSTONE FUNDS GROUP TRUST
Prospectus Date	rr_ProspectusDate	Jan. 27, 2023
Touchstone Dividend Equity 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 Dividend Equity 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 Dividend Equity Fund (the “Fund”) seeks current income and 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 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 that you pay </span><span style="font-family:Arial;font-size:10.02pt;font-weight:bold;margin-left:10pt;">each year as a percentage of the 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 12% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	12.00%
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 equity securities of U.S. large-cap companies that have historically paid dividends. 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. For the purpose of the Fund’s 80% policy, a large capitalization company has a market capitalization within the range represented in the S&P 500 Index (between approximately $3.6 billion and $2.1 trillion as of December 31, 2022) at the time of purchase. These securities may be listed on an exchange or traded over-the-counter.In selecting securities for the Fund, the Fund’s sub-adviser, Fort Washington Investment Advisors, Inc. (the “Sub-Adviser”), seeks to invest in companies that:•Have historically paid consistent, growing dividends•Have sustainable competitive advantages that should result in excess profits to support future dividend payments•Trade at reasonable valuations compared to their intrinsic valueThe Sub-Adviser believes the unique approach results in a portfolio of high quality companies with sustainable competitive advantages that should pay reliable, growing dividends at reasonable valuations. The Sub-Adviser evaluates a company’s competitive advantage by assessing its barriers to entry. The barrier(s) to entry can be created through a cost advantage, economies of scale, high customer loyalty, or a government barrier (e.g., license or subsidy). The Sub-Adviser believes that the strongest barrier to entry is the combination of economies of scale and high customer loyalty.The Fund will generally hold 65 to 90 companies, with residual cash and equivalents expected to represent less than 10% of the Fund’s net assets. The Fund may, at times, hold fewer securities and a higher percentage of cash and equivalents when, among other reasons, the Sub-Adviser cannot find a sufficient number of securities that meets its purchase requirements.The Fund will generally sell a security if the security does not meet portfolio guidelines, if the security stops paying a dividend and future prospects of paying a dividend are limited, or if better opportunities exist based on the fundamentals and valuation of the business.
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.Dividend Risk: There is no guarantee that the companies in which the Fund invests will declare dividends in the future or that dividends, if declared, will remain at current levels or increase over time. Securities that pay dividends may be sensitive to changes in interest rates, and as interest rates rise or fall, the prices of such securities may fall.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.Value Investing Risk: Value investing presents the risk that the Fund’s security holdings may never reach their full intrinsic value because the market fails to recognize what the portfolio managers consider the true business value or because the portfolio managers have misjudged those values.
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 Fund commenced operations following the completion of the reorganization of each of the AIG Focused Dividend Strategy Fund and AIG Select Dividend Growth Fund, each a series of SunAmerica Series, Inc., into the Fund, which occurred on July 16, 2021 (the“Reorganization”). As a result of the Reorganization, the performance and accounting history of the AIG Focused Dividend Strategy Fund (the “Predecessor Fund”), as well as its assets and liabilities, were assumed by the Fund. Performance information included herein, including information on fees and expenses, prior to July 16, 2021 is that of the Predecessor Fund, which was managed by a different adviser using different investment strategies. The Fund’s performance shown below would have differed if Fort Washington Investment Advisors, Inc. (the Fund’s Sub-Adviser) had managed the Fund pursuant to its current strategies prior to July 16, 2021. The Predecessor Fund did not offer Institutional Class shares or Class R6 shares.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® Value 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="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="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="font-family:Times New Roman;font-size:6.5pt;position:relative;top:-4.25pt;">®</span><span style="font-family:Times New Roman;font-size:10pt;"> Value Index.</span>
Performance Availability Phone [Text]	rr_PerformanceAvailabilityPhone	<span style="font-family:Times New Roman;font-size:10pt;">1.800.543.0407</span>
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	<span style="font-family:Times New Roman;font-size:10pt;">TouchstoneInvestments.com</span>
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	<span style="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 Dividend Equity Fund — Class A Shares Total Return as of December 31</span>
Bar Chart Does Not Reflect Sales Loads [Text]	rr_BarChartDoesNotReflectSalesLoads	<span style="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:1st Quarter 201314.99%Worst Quarter:1st Quarter 2020(27.03)%
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="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 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="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 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.
Touchstone Dividend 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	[1]
Management Fees	rr_ManagementFeesOverAssets	0.51%
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	1.00%
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	0.99%	[2]
1 Year	rr_ExpenseExampleYear01	$ 596
3 Years	rr_ExpenseExampleYear03	802
5 Years	rr_ExpenseExampleYear05	1,024
10 Years	rr_ExpenseExampleYear10	$ 1,663
2013	rr_AnnualReturn2013	39.91%
2014	rr_AnnualReturn2014	9.06%
2015	rr_AnnualReturn2015	(0.96%)
2016	rr_AnnualReturn2016	15.38%
2017	rr_AnnualReturn2017	20.24%
2018	rr_AnnualReturn2018	(11.29%)
2019	rr_AnnualReturn2019	19.86%
2020	rr_AnnualReturn2020	(6.05%)
2021	rr_AnnualReturn2021	19.46%
2022	rr_AnnualReturn2022	(5.74%)
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	<span style="color:#000000;font-family:Arial;font-size:10.02pt;">Best Quarter:</span>
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Mar. 31, 2013
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	14.99%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	<span style="color:#000000;font-family:Arial;font-size:10.02pt;">Worst Quarter:</span>
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Mar. 31, 2020
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(27.03%)
1 Year	rr_AverageAnnualReturnYear01	(10.44%)
5 Years	rr_AverageAnnualReturnYear05	1.18%
10 Years	rr_AverageAnnualReturnYear10	8.32%
SinceInception	rr_AverageAnnualReturnSinceInception		[3]
InceptionDate	rr_AverageAnnualReturnInceptionDate	Jun. 08, 1998
Touchstone Dividend 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	[1]
Management Fees	rr_ManagementFeesOverAssets	0.51%
Distribution and/or Shareholder Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	1.00%
Total Other Expenses	rr_OtherExpensesOverAssets	0.25%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.76%
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	1.69%	[2]
1 Year	rr_ExpenseExampleYear01	$ 272
3 Years	rr_ExpenseExampleYear03	547
5 Years	rr_ExpenseExampleYear05	948
10 Years	rr_ExpenseExampleYear10	2,067
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	172
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	547
Expense Example, No Redemption, 5 Years	rr_ExpenseExampleNoRedemptionYear05	948
Expense Example, No Redemption, 10 Years	rr_ExpenseExampleNoRedemptionYear10	$ 2,067
1 Year	rr_AverageAnnualReturnYear01	(7.28%)
5 Years	rr_AverageAnnualReturnYear05	1.72%
10 Years	rr_AverageAnnualReturnYear10	8.25%
SinceInception	rr_AverageAnnualReturnSinceInception		[3]
InceptionDate	rr_AverageAnnualReturnInceptionDate	Jun. 08, 1998
Touchstone Dividend 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	[1]
Management Fees	rr_ManagementFeesOverAssets	0.51%
Distribution and/or Shareholder Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Total Other Expenses	rr_OtherExpensesOverAssets	0.23%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.74%
Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	none	[2]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	rr_NetExpensesOverAssets	0.74%	[2]
1 Year	rr_ExpenseExampleYear01	$ 76
3 Years	rr_ExpenseExampleYear03	237
5 Years	rr_ExpenseExampleYear05	411
10 Years	rr_ExpenseExampleYear10	$ 918
1 Year	rr_AverageAnnualReturnYear01	(5.52%)	[4]
5 Years	rr_AverageAnnualReturnYear05	2.60%	[4]
10 Years	rr_AverageAnnualReturnYear10		[4]
SinceInception	rr_AverageAnnualReturnSinceInception	7.37%	[4]
InceptionDate	rr_AverageAnnualReturnInceptionDate	May 15, 2013	[4]
Touchstone Dividend 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	[1]
Management Fees	rr_ManagementFeesOverAssets	0.51%
Distribution and/or Shareholder Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Total Other Expenses	rr_OtherExpensesOverAssets	1.29%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.80%
Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(1.13%)	[2]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	rr_NetExpensesOverAssets	0.67%	[2]
1 Year	rr_ExpenseExampleYear01	$ 68
3 Years	rr_ExpenseExampleYear03	456
5 Years	rr_ExpenseExampleYear05	869
10 Years	rr_ExpenseExampleYear10	$ 2,023
1 Year	rr_AverageAnnualReturnYear01	(5.50%)
5 Years	rr_AverageAnnualReturnYear05
10 Years	rr_AverageAnnualReturnYear10
SinceInception	rr_AverageAnnualReturnSinceInception	2.06%
InceptionDate	rr_AverageAnnualReturnInceptionDate	Jul. 19, 2021
Touchstone Dividend 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	[1]
Management Fees	rr_ManagementFeesOverAssets	0.51%
Distribution and/or Shareholder Service (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Total Other Expenses	rr_OtherExpensesOverAssets	1.25%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.76%
Fee Waiver and/or Expense Reimbursement	rr_FeeWaiverOrReimbursementOverAssets	(1.11%)	[2]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	rr_NetExpensesOverAssets	0.65%	[2]
1 Year	rr_ExpenseExampleYear01	$ 66
3 Years	rr_ExpenseExampleYear03	446
5 Years	rr_ExpenseExampleYear05	850
10 Years	rr_ExpenseExampleYear10	$ 1,981
1 Year	rr_AverageAnnualReturnYear01	(5.38%)	[5]
5 Years	rr_AverageAnnualReturnYear05		[5]
10 Years	rr_AverageAnnualReturnYear10		[5]
SinceInception	rr_AverageAnnualReturnSinceInception	0.85%	[5]
InceptionDate	rr_AverageAnnualReturnInceptionDate	Aug. 02, 2021	[5]
Touchstone Dividend Equity Fund | Return After Taxes on Distributions | Class A
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	(11.73%)
5 Years	rr_AverageAnnualReturnYear05	(0.19%)
10 Years	rr_AverageAnnualReturnYear10	6.61%
SinceInception	rr_AverageAnnualReturnSinceInception		[3]
InceptionDate	rr_AverageAnnualReturnInceptionDate
Touchstone Dividend Equity Fund | Return After Taxes on Distributions and Sale of Shares | Class A
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	(5.62%)
5 Years	rr_AverageAnnualReturnYear05	0.70%
10 Years	rr_AverageAnnualReturnYear10	6.40%
SinceInception	rr_AverageAnnualReturnSinceInception		[3]
InceptionDate	rr_AverageAnnualReturnInceptionDate
Touchstone Dividend Equity Fund | Russell 1000® Value Index (reflects no deduction for fees, expenses or taxes)
Risk Return Abstract	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	(7.54%)
5 Years	rr_AverageAnnualReturnYear05	6.67%
10 Years	rr_AverageAnnualReturnYear10	10.29%
SinceInception	rr_AverageAnnualReturnSinceInception	6.86%
InceptionDate	rr_AverageAnnualReturnInceptionDate

[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 0.99%, 1.69%, 0.77%, 0.67% and 0.65%  of average daily net assets for Classes A, C, Y, 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] Since Inception returns are not shown for classes with greater then ten years of performance history.

[4] Class Y shares of the Fund assumed the performance history of Class W shares of the Predecessor Fund. The inception date of Class W shares of the Predecessor Fund was May 15, 2013.

[5] 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.