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Transamerica Large Growth Annual Total Returns
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Retail Class [Member] | Transamerica Large Growth | R6        
Prospectus [Line Items]        
Annual Return [Percent] 19.24% 37.23% 43.61% (45.89%)