Risk Return Summary [Abstract] Risk Return Summary [Abstract] Prospectus: Prospectus: Document Information, Document [Axis] Document Information, Document [Axis] Document [Domain] Document [Domain] Touchstone Core Bond Fund (Prospectus Summary) [Member] Touchstone Core Bond Fund (Prospectus Summary) Touchstone High Yield Fund (Prospectus Summary) [Member] Touchstone High Yield Fund (Prospectus Summary) Touchstone Money Market Fund (Prospectus Summary) [Member] Touchstone Money Market Fund (Prospectus Summary) Touchstone Institutional Money Market Fund (Prospectus Summary) [Member] Touchstone Institutional Money Market Fund (Prospectus Summary) Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] S000003086 [Member] Touchstone Core Bond Fund S000003086 [Member] S000003087 [Member] Touchstone High Yield Fund S000003087 [Member] S000003089 [Member] Touchstone Money Market Fund S000003089 [Member] S000003088 [Member] Touchstone Institutional Money Market Fund S000003088 [Member] Share Class [Axis] Share Class [Axis] Share Classes Share Classes C000008388 [Member] Class A C000008388 [Member] C000008389 [Member] Class C C000008389 [Member] C000109414 [Member] Institutional C000109414 [Member] C000109415 [Member] Class Y C000109415 [Member] C000008390 [Member] Class A C000008390 [Member] C000008392 [Member] Class C C000008392 [Member] C000047362 [Member] Class Y C000047362 [Member] C000112485 [Member] Institutional C000112485 [Member] Class A Class A Class A C000008395 [Member] Class S C000008395 [Member] C000008393 [Member] Institutional C000008393 [Member] Risk/Return: Risk/Return: Document Type Document Type Document Period End Date Document Period End Date Entity Registrant Name Registrant Name Entity Central Index Key Central Index Key Amendment Flag Amendment Flag Document Creation Date Document Creation Date Document Effective Date Document Effective Date Prospectus Date Prospectus Date Trading Symbol Trading Symbol Prospectus [Line Items] Prospectus [Line Items] Risk/Return [Heading] Risk/Return, Heading Objective [Heading] Investment Objective, Heading Objective, Primary [Text Block] Investment Objective, Primary Objective, Secondary [Text Block] Investment Objective, Secondary Expense [Heading] Expense, Heading Expense Narrative [Text Block] Expense, Narrative Shareholder Fees Caption [Text] Shareholder Fees, Caption Shareholder Fees [Table] Shareholder Fees [Table] Operating Expenses Caption [Text] Operating Expenses, Caption Annual Fund Operating Expenses [Table] Annual Fund Operating Expenses [Table] Expense Example [Heading] Expense Example, Heading Expense Example Narrative [Text Block] Expense Example, Narrative Expense Example by, Year, Caption [Text] Expense Example by, Year, Caption Expense Example, With Redemption [Table] Expense Example, With Redemption [Table] Expense Example, No Redemption, By Year, Caption [Text] Expense Example, No Redemption, By Year, Caption Expense Example, No Redemption [Table] Expense Example, No Redemption [Table] Portfolio Turnover [Heading] Portfolio Turnover, Heading Portfolio Turnover [Text Block] Portfolio Turnover Strategy [Heading] Investment Strategy, Heading Strategy Narrative [Text Block] Investment Strategy, Narrative Risk [Heading] Risk, Heading Risk Narrative [Text Block] Risk, Narrative Bar Chart and Performance Table [Heading] Bar Chart and Performance Table, Heading Performance Narrative [Text Block] Performance, Narrative Bar Chart [Heading] Bar Chart, Heading Bar Chart [Table] Bar Chart [Table] Bar Chart Closing [Text Block] Bar Chart, Closing Performance Table Narrative Performance Table Narrative Performance [Table] Performance [Table] Shareholder Fees: Shareholder Fees (fees paid directly from your investment) Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) Maximum Sales Charge Imposed on Purchases (as a percentage of offering price) Maximum Deferred Sales Charge (as a percentage of Offering Price) Maximum Deferred Sales Charge (as a percentage of original purchase price or the amount redeemed, whichever is less) Redemption Fee Wire Redemption Fee Redemption Fee Operating Expenses: Operating Expenses: Management Fees (as a percentage of Assets) Management Fees Distribution and Service (12b-1) Fees Distribution (12b-1) Fees Other Expenses (as a percentage of Assets): Other Expenses Other Expenses Acquired Fund Fees and Expenses Acquired Fund Fees and Expenses (AFFE) Expenses (as a percentage of Assets) Total Annual Fund Operating Expenses Total Expenses Fee Waiver or Reimbursement Fee Waiver and/or Expense Reimbursement Fee Waiver and/or Expense Reimbursement Net Expenses (as a percentage of Assets) Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement Net Expenses Expense Example: Expense Example: Expense Example, with Redemption, 1 Year Expense Example, With Redemption, 1 Year Expense Example, With Redemption, 1 Year Expense Example, with Redemption, 3 Years 3 Years Expense Example, With Redemption, 3 Years Expense Example, with Redemption, 5 Years 5 Years Expense Example, With Redemption, 5 Years Expense Example, with Redemption, 10 Years 10 Years Expense Example, With Redemption, 10 Years Expense Example, No Redemption: Expense Example, No Redemption: Expense Example, No Redemption, 1 Year Expense Example, No Redemption, 1 Year Expense Example, No Redemption, 1 Year Expense Example, No Redemption, 3 Years 3 Years Expense Example, No Redemption, 3 Years Expense Example, No Redemption, 5 Years Expense Example, No Redemption, 5 Years Expense Example, No Redemption, 5 Years Expense Example, No Redemption, 10 Years Expense Example, No Redemption, 10 Years Expense Example, No Redemption, 10 Years Bar Chart Table: Bar Chart Table: Annual Return 2003 Annual Return 2003 Annual Return 2004 Annual Return 2004 Annual Return 2005 Annual Return 2005 Annual Return 2006 Annual Return 2006 Annual Return 2007 Annual Return 2007 Annual Return 2008 Annual Return 2008 Annual Return 2009 Annual Return 2009 Annual Return 2010 Annual Return 2010 Annual Return 2011 Annual Return 2011 Annual Return 2012 Annual Return 2012 Performance Measure [Axis] Performance Measure [Axis] Before Taxes Before Taxes After Taxes on Distributions After Taxes on Distributions After Taxes on Distributions After Taxes on Distributions and Sales After Taxes on Distributions and Sale of Fund Shares After Taxes on Distributions and Sales Barclays Capital U.S. Aggregate Bond Index [Member] Barclays Capital U.S. Aggregate Bond Index Barclays Capital U.S. Aggregate Bond Index [Member] Average Annual Return: Average Annual Return: Label Average Annual Returns, Label 1 Year Average Annual Returns, 1 Year 5 Years Average Annual Returns, 5 Years 10 Years Average Annual Returns, 10 Years Since Inception Average Annual Returns, Since Inception Inception Date Average Annual Returns, Inception Date Fee Waiver or Reimbursement over Assets, Date of Termination Fee Waiver or Reimbursement over Assets, Date of Termination Portfolio Turnover, Rate Portfolio Turnover, Rate Expense Breakpoint Discounts [Text] Expense Breakpoint, Discounts Expense Breakpoint, Discounts Expense Breakpoint, Minimum Investment Required [Amount] Expense Breakpoint, Minimum Investment Required Amount Expenses Restated to Reflect Current [Text] Expenses Restated to Reflect Current Strategy Portfolio Concentration [Text] Strategy Portfolio Concentration Risk Lose Money [Text] Risk, Lose Money Risk Money Market Fund [Text] Risk Money Market Fund Risk Not Insured Depository Institution [Text] Risk Not Insured Depository Institution Performance Information Illustrates Variability of Returns [Text] Performance, Information Illustrates Variability of Returns Performance Availability Phone [Text] Performance, Availability Phone Number Performance Availability Website Address [Text] Performance, Availability Website Address Performance Past Does Not Indicate Future [Text] Performance, Past Does Not Indicate Future Bar Chart Does Not Reflect Sales Loads [Text] Bar Chart, Does Not Reflect Sales Loads Year to Date Return, Label Year to Date Return, Label Bar Chart, Year to Date Return, Date Bar Chart, Year to Date Return, Date Bar Chart, Year to Date Return Bar Chart, Year to Date Return Highest Quarterly Return, Label Label Highest Quarterly Return, Label Highest Quarterly Return, Date Highest Quarterly Return, Date Highest Quarterly Return Highest Quarterly Return Lowest Quarterly Return, Label Label Lowest Quarterly Return, Label Lowest Quarterly Return, Date Lowest Quarterly Return, Date Lowest Quarterly Return Lowest Quarterly Return Index No Deduction for Fees, Expenses, Taxes [Text] Index No Deduction for Fees, Expenses, Taxes Performance Table Uses Highest Federal Rate Performance Table, Uses Highest Federal Rate Performance Table Not Relevant to Tax Deferred Performance Table, Not Relevant to Tax Deferred Performance Table One Class of after Tax Shown [Text] Performance Table, One Class of after Tax Shown Caption Average Annual Returns, Caption Merrill Lynch U.S. High Yield Cash Pay Index [Member] Merrill Lynch U.S. High Yield Cash Pay Index Merrill Lynch U.S. High Yield Cash Pay Index [Member] Expense Footnotes [Text Block] Expenses Deferred Charges [Text Block] Expenses Range of Exchange Fees [Text Block] Expense Example by Year [Heading] Expense Example, No Redemption Narrative [Text Block] Expense Example Footnotes [Text Block] Expense Example Closing [Text Block] Risk Footnotes [Text Block] Risk Closing [Text Block] Bar Chart Narrative [Text Block] Bar Chart Footnotes [Text Block] Performance Table Heading Market Index Performance [Table] Performance Table Footnotes Performance Table Closing [Text Block] Performance Table, Closing Operating Expenses Column [Text] Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) Expense Example, By Year, Column [Text] Column Expense Example, No Redemption, By Year, Column [Text] Column Annual Return Caption [Text] Caption Annual Return, Column [Text] Column Annual Return, Inception Date Inception Date Annual Return 2000 Annual Return 2001 Annual Return 2002 Annual Return 2013 Shareholder Fees Column [Text] Maximum Deferred Sales Charge (as a percentage) Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) Redemption Fee (as a percentage of Amount Redeemed) Redemption Fee (as a percentage of Amount Redeemed) Exchange Fee (as a percentage of Amount Redeemed) Exchange Fee Maximum Account Fee (as a percentage of Assets) Maximum Account Fee Shareholder Fee, Other Distribution or Similar (Non 12b-1) Fees Component1 Other Expenses Component2 Other Expenses Component3 Other Expenses Expense Exchange Traded Fund Commissions [Text] Expenses Represent Both Master and Feeder [Text] Expenses Explanation of Nonrecurring Account Fee [Text] Other Expenses, New Fund, Based on Estimates [Text] Acquired Fund Fees and Expenses, Based on Estimates [Text] Expenses Other Expenses Had Extraordinary Expenses Been Included [Text] Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text] Risk Nondiversified Status [Text] Risk Nondiversified Status Risk Caption Performance One Year or Less [Text] Performance Additional Market Index [Text] Bar Chart, Returns for Class Not Offered in Prospectus [Text] Bar Chart, Reason Selected Class Different from Immediately Preceding Period [Text] Performance Table Does Reflect Sales Loads Performance Table, Does Reflect Sales Loads Performance Table Market Index Changed Performance Table Explanation after Tax Higher Performance Table, Explanation after Tax Higher