v3.26.3
Voya Large-Cap Growth Fund Average Annual Total Returns
 12 Months Ended 33 Months Ended 60 Months Ended 120 Months Ended
May 31, 2026
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Russell 3000® Index[Member]          
Prospectus [Line Items]          
Average Annual Return, Percent [1]   17.15% 22.83%    
Class A C I R R6 and W Shares [Member] | Class A          
Prospectus [Line Items]          
Average Annual Return, Percent   8.34%   10.66% 14.18%
Performance Inception Date Jul. 21, 1997        
Class A C I R R6 and W Shares [Member] | Class A | After Taxes on Distributions          
Prospectus [Line Items]          
Average Annual Return, Percent   4.66%   7.61% 11.60%
Class A C I R R6 and W Shares [Member] | Class A | After Taxes on Distributions and Sales          
Prospectus [Line Items]          
Average Annual Return, Percent   7.41%   7.58% 10.95%
Class A C I R R6 and W Shares [Member] | Class A | Russell 3000® Index[Member]          
Prospectus [Line Items]          
Average Annual Return, Percent [2]   17.15%   13.15% 14.29%
Class A C I R R6 and W Shares [Member] | Class A | Russell 1000® Growth Index[Member]          
Prospectus [Line Items]          
Average Annual Return, Percent [2]   18.56%   15.32% 18.13%
Class A C I R R6 and W Shares [Member] | Class C          
Prospectus [Line Items]          
Average Annual Return, Percent   13.19%   11.13% 14.16%
Performance Inception Date Jul. 21, 1997        
Class A C I R R6 and W Shares [Member] | Class C | Russell 3000® Index[Member]          
Prospectus [Line Items]          
Average Annual Return, Percent [2]   17.15%   13.15% 14.29%
Class A C I R R6 and W Shares [Member] | Class C | Russell 1000® Growth Index[Member]          
Prospectus [Line Items]          
Average Annual Return, Percent [2]   18.56%   15.32% 18.13%
Class A C I R R6 and W Shares [Member] | Class I          
Prospectus [Line Items]          
Average Annual Return, Percent   15.34%   12.36% 15.26%
Performance Inception Date Jan. 08, 2002        
Class A C I R R6 and W Shares [Member] | Class I | Russell 3000® Index[Member]          
Prospectus [Line Items]          
Average Annual Return, Percent [2]   17.15%   13.15% 14.29%
Class A C I R R6 and W Shares [Member] | Class I | Russell 1000® Growth Index[Member]          
Prospectus [Line Items]          
Average Annual Return, Percent [2]   18.56%   15.32% 18.13%
Class A C I R R6 and W Shares [Member] | Class R          
Prospectus [Line Items]          
Average Annual Return, Percent   14.67%   11.72% 14.58%
Performance Inception Date May 30, 2014        
Class A C I R R6 and W Shares [Member] | Class R | Russell 3000® Index[Member]          
Prospectus [Line Items]          
Average Annual Return, Percent [2]   17.15%   13.15% 14.29%
Class A C I R R6 and W Shares [Member] | Class R | Russell 1000® Growth Index[Member]          
Prospectus [Line Items]          
Average Annual Return, Percent [2]   18.56%   15.32% 18.13%
Class A C I R R6 and W Shares [Member] | Class R6          
Prospectus [Line Items]          
Average Annual Return, Percent   15.35%   12.39% 15.31%
Performance Inception Date Jun. 02, 2015        
Class A C I R R6 and W Shares [Member] | Class R6 | Russell 3000® Index[Member]          
Prospectus [Line Items]          
Average Annual Return, Percent [2]   17.15%   13.15% 14.29%
Class A C I R R6 and W Shares [Member] | Class R6 | Russell 1000® Growth Index[Member]          
Prospectus [Line Items]          
Average Annual Return, Percent [2]   18.56%   15.32% 18.13%
Class A C I R R6 and W Shares [Member] | Class W          
Prospectus [Line Items]          
Average Annual Return, Percent   15.23%   12.28% 15.15%
Performance Inception Date Jul. 21, 1997        
Class A C I R R6 and W Shares [Member] | Class W | Russell 3000® Index[Member]          
Prospectus [Line Items]          
Average Annual Return, Percent [2]   17.15%   13.15% 14.29%
Class A C I R R6 and W Shares [Member] | Class W | Russell 1000® Growth Index[Member]          
Prospectus [Line Items]          
Average Annual Return, Percent [2]   18.56%   15.32% 18.13%
[1] The index returns do not reflect deductions for fees, expenses, or taxes.
[2] The index returns do not reflect deductions for fees, expenses, or taxes.