Touchstone Small Cap Fund Annual Fund Operating Expenses - Touchstone Small Cap Fund |
Sep. 30, 2025 |
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| Prospectus [Line Items] | ||||||||
| Fee Waiver or Reimbursement over Assets, Date of Termination | <span style="color:#000000;font-family:Times New Roman;font-size:9pt;font-style:italic;">July 29, 2027</span> | |||||||
| Class A | ||||||||
| Prospectus [Line Items] | ||||||||
| Management Fees (as a percentage of Assets) | 0.85% | |||||||
| Distribution and Service (12b-1) Fees | 0.25% | |||||||
| Component2 Other Expenses | 0.01% | |||||||
| Component3 Other Expenses | 0.42% | |||||||
| Other Expenses (as a percentage of Assets): | 0.43% | |||||||
| Expenses (as a percentage of Assets) | 1.53% | |||||||
| Fee Waiver or Reimbursement | (0.28%) | [1] | ||||||
| Net Expenses (as a percentage of Assets) | 1.25% | [1] | ||||||
| Class C | ||||||||
| Prospectus [Line Items] | ||||||||
| Management Fees (as a percentage of Assets) | 0.85% | |||||||
| Distribution and Service (12b-1) Fees | 1.00% | |||||||
| Component2 Other Expenses | 0.01% | |||||||
| Component3 Other Expenses | 0.91% | |||||||
| Other Expenses (as a percentage of Assets): | 0.92% | |||||||
| Expenses (as a percentage of Assets) | 2.77% | |||||||
| Fee Waiver or Reimbursement | (0.82%) | [1] | ||||||
| Net Expenses (as a percentage of Assets) | 1.95% | [1],[2] | ||||||
| Class Y | ||||||||
| Prospectus [Line Items] | ||||||||
| Management Fees (as a percentage of Assets) | 0.85% | |||||||
| Distribution and Service (12b-1) Fees | 0.00% | |||||||
| Component2 Other Expenses | 0.01% | |||||||
| Component3 Other Expenses | 0.32% | |||||||
| Other Expenses (as a percentage of Assets): | 0.33% | |||||||
| Expenses (as a percentage of Assets) | 1.18% | |||||||
| Fee Waiver or Reimbursement | (0.18%) | [1] | ||||||
| Net Expenses (as a percentage of Assets) | 1.00% | [1] | ||||||
| Institutional Class | ||||||||
| Prospectus [Line Items] | ||||||||
| Management Fees (as a percentage of Assets) | 0.85% | |||||||
| Distribution and Service (12b-1) Fees | 0.00% | |||||||
| Component2 Other Expenses | 0.01% | |||||||
| Component3 Other Expenses | 0.23% | |||||||
| Other Expenses (as a percentage of Assets): | 0.24% | |||||||
| Expenses (as a percentage of Assets) | 1.09% | |||||||
| Fee Waiver or Reimbursement | (0.17%) | [1] | ||||||
| Net Expenses (as a percentage of Assets) | 0.92% | [1] | ||||||
| Class R6 | ||||||||
| Prospectus [Line Items] | ||||||||
| Management Fees (as a percentage of Assets) | 0.85% | |||||||
| Distribution and Service (12b-1) Fees | 0.00% | |||||||
| Component2 Other Expenses | 0.01% | |||||||
| Component3 Other Expenses | 0.23% | [3] | ||||||
| Other Expenses (as a percentage of Assets): | 0.24% | |||||||
| Expenses (as a percentage of Assets) | 1.09% | |||||||
| Fee Waiver or Reimbursement | (0.25%) | [1] | ||||||
| Net Expenses (as a percentage of Assets) | 0.84% | [1] | ||||||
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