Touchstone Small Cap Fund Shareholder Fees - Touchstone Small Cap Fund	Sep. 30, 2025 USD ($)
Class A
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	5.00%
Maximum Deferred Sales Charge (as a percentage)	0.00%
Redemption Fee	$ (15)
Class C
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage)	1.00%
Redemption Fee	$ (15)
Class Y
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage)	0.00%
Redemption Fee	$ (15)
Institutional Class
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage)	0.00%
Redemption Fee	$ (15)
Class R6
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage)	0.00%
Redemption Fee	$ (15)