v3.26.1
Voya US Stock Index Portfolio Average Annual Total Returns
 12 Months Ended 60 Months Ended 120 Months Ended
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Class ADV        
Prospectus [Line Items]        
Average Annual Return, Percent   16.91% 13.50% 13.91%
Performance Inception Date May 28, 2009      
Class ADV | Russell 3000® Index[Member]        
Prospectus [Line Items]        
Average Annual Return, Percent [1]   17.15% 13.15% 14.29%
Class ADV | S&P 500® Index[Member]        
Prospectus [Line Items]        
Average Annual Return, Percent [1]   17.88% 14.42% 14.82%
Class I        
Prospectus [Line Items]        
Average Annual Return, Percent   17.53% 14.10% 14.51%
Performance Inception Date May 03, 2004      
Class I | Russell 3000® Index[Member]        
Prospectus [Line Items]        
Average Annual Return, Percent [1]   17.15% 13.15% 14.29%
Class I | S&P 500® Index[Member]        
Prospectus [Line Items]        
Average Annual Return, Percent [1]   17.88% 14.42% 14.82%
Class S        
Prospectus [Line Items]        
Average Annual Return, Percent   17.23% 13.83% 14.23%
Performance Inception Date Apr. 30, 2007      
Class S | Russell 3000® Index[Member]        
Prospectus [Line Items]        
Average Annual Return, Percent [1]   17.15% 13.15% 14.29%
Class S | S&P 500® Index[Member]        
Prospectus [Line Items]        
Average Annual Return, Percent [1]   17.88% 14.42% 14.82%
Class S2        
Prospectus [Line Items]        
Average Annual Return, Percent   17.08% 13.65% 14.05%
Performance Inception Date Aug. 01, 2007      
Class S2 | Russell 3000® Index[Member]        
Prospectus [Line Items]        
Average Annual Return, Percent [1]   17.15% 13.15% 14.29%
Class S2 | S&P 500® Index[Member]        
Prospectus [Line Items]        
Average Annual Return, Percent [1]   17.88% 14.42% 14.82%
[1] The index returns do not reflect deductions for fees, expenses, or taxes.