v3.25.4
Transamerica Mid Cap Value Opportunities Expense Example, No Redemption - Retail Class [Member] - Transamerica Mid Cap Value Opportunities
Oct. 31, 2025
USD ($)
A  
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year $ 664
Expense Example, No Redemption, 3 Years 904
Expense Example, No Redemption, 5 Years 1,163
Expense Example, No Redemption, 10 Years 1,903
C  
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year 190
Expense Example, No Redemption, 3 Years 588
Expense Example, No Redemption, 5 Years 1,011
Expense Example, No Redemption, 10 Years 2,190
I  
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year 87
Expense Example, No Redemption, 3 Years 271
Expense Example, No Redemption, 5 Years 471
Expense Example, No Redemption, 10 Years 1,049
I2  
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year 77
Expense Example, No Redemption, 3 Years 240
Expense Example, No Redemption, 5 Years 417
Expense Example, No Redemption, 10 Years 930
R6  
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year 77
Expense Example, No Redemption, 3 Years 240
Expense Example, No Redemption, 5 Years 417
Expense Example, No Redemption, 10 Years $ 930