v3.26.1
Touchstone Sands Capital Emerging Markets Growth Fund Average Annual Total Returns
 12 Months Ended 60 Months Ended 120 Months Ended
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Bloomberg World ex US Large & Mid Cap Index (reflects no deduction for fees, expenses or taxes, except foreign withholding taxes on dividends)[Member]      
Prospectus [Line Items]      
Average Annual Return, Percent [1] 31.47% 7.59% 8.43%
Bloomberg Emerging Markets Large & Mid Cap Index (reflects no deduction for fees, expenses or taxes, except foreign withholding taxes on dividends)[Member]      
Prospectus [Line Items]      
Average Annual Return, Percent [2] 30.84% 3.83% 8.67%
MSCI Emerging Markets Index (reflects no deduction for fees, expenses or taxes, except foreign withholding taxes on dividends)[Member]      
Prospectus [Line Items]      
Average Annual Return, Percent 33.57% 4.20% 8.42%
Class A      
Prospectus [Line Items]      
Average Annual Return, Percent 13.96% (5.55%) 5.78%
Class C      
Prospectus [Line Items]      
Average Annual Return, Percent 18.19% (5.28%) 5.54%
Class Y      
Prospectus [Line Items]      
Average Annual Return, Percent 20.34% (4.28%) 6.64%
Class Y | After Taxes on Distributions      
Prospectus [Line Items]      
Average Annual Return, Percent 20.27% (4.37%) 6.56%
Class Y | After Taxes on Distributions and Sales      
Prospectus [Line Items]      
Average Annual Return, Percent 12.38% (3.15%) 5.38%
Institutional Class      
Prospectus [Line Items]      
Average Annual Return, Percent 20.40% (4.21%) 6.72%
Class R6      
Prospectus [Line Items]      
Average Annual Return, Percent [3] 20.50% (4.16%) 6.75%
[1] The Fund changed its broad-based securities market index to the Bloomberg World ex US Large & Mid Cap Index which is similarly representative of the overall securities market applicable to the Fund.
[2] The Fund changed its additional index to the Bloomberg Emerging Markets Large & Mid Cap Index which has similar investment objectives to the Fund.
[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.