v3.26.1
Expense Example, No Redemption - Touchstone Non-US Equity Fund - Class C
Mar. 31, 2026
USD ($)
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year $ 195
Expense Example, No Redemption, 3 Years 668
Expense Example, No Redemption, 5 Years 1,167
Expense Example, No Redemption, 10 Years $ 2,540