v3.25.4
Annual Total Returns
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Innovator Emerging Markets Power Buffer ETF - January            
Prospectus [Line Items]            
Annual Return [Percent] 14.41% 3.12% 5.17% (8.31%) (1.13%) 11.86%
Innovator Emerging Markets Power Buffer ETF - April            
Prospectus [Line Items]            
Annual Return [Percent] 14.94% 2.99% 8.01% (4.90%)    
Innovator Emerging Markets Power Buffer ETF - July            
Prospectus [Line Items]            
Annual Return [Percent] 20.33% 4.61% 2.52% (11.05%) (2.16%) 1.26%
Innovator Emerging Markets Power Buffer ETF - October            
Prospectus [Line Items]            
Annual Return [Percent] 21.97% 9.75% 6.28% (10.77%)    
Innovator Growth-100 Power Buffer ETF - January            
Prospectus [Line Items]            
Annual Return [Percent] 14.25% 15.35% 20.75% (18.79%) 11.72% 8.78%
Innovator Growth-100 Power Buffer ETF - April            
Prospectus [Line Items]            
Annual Return [Percent] 6.62% 13.27% 30.56% (12.06%) 8.90%  
Innovator Growth-100 Power Buffer ETF - June            
Prospectus [Line Items]            
Annual Return [Percent] 15.54%          
Innovator Growth-100 Power Buffer ETF - July            
Prospectus [Line Items]            
Annual Return [Percent] 15.80% 13.89% 29.56% (11.41%) 7.42%  
Innovator Growth-100 Power Buffer ETF - August            
Prospectus [Line Items]            
Annual Return [Percent] 14.80%          
Innovator Growth-100 Power Buffer ETF - September            
Prospectus [Line Items]            
Annual Return [Percent] 13.88%          
Innovator Growth-100 Power Buffer ETF - October            
Prospectus [Line Items]            
Annual Return [Percent] 12.68% 12.06% 30.83% (13.51%) 12.02% 11.60%
Innovator Growth-100 Power Buffer ETF - November            
Prospectus [Line Items]            
Annual Return [Percent] 11.09%          
Innovator Growth-100 Power Buffer ETF - December            
Prospectus [Line Items]            
Annual Return [Percent] 13.60%          
Innovator International Developed Power Buffer ETF - January            
Prospectus [Line Items]            
Annual Return [Percent] 19.40% (0.49%) 13.93% (2.40%) 6.75% 4.70%
Innovator International Developed Power Buffer ETF - February            
Prospectus [Line Items]            
Annual Return [Percent] 19.96%          
Innovator International Developed Power Buffer ETF - March            
Prospectus [Line Items]            
Annual Return [Percent] 18.87%          
Innovator International Developed Power Buffer ETF - April            
Prospectus [Line Items]            
Annual Return [Percent] 15.39% 3.81% 7.82% (7.82%)    
Innovator International Developed Power Buffer ETF - May            
Prospectus [Line Items]            
Annual Return [Percent] none          
Innovator International Developed Power Buffer ETF - June            
Prospectus [Line Items]            
Annual Return [Percent] 18.69%          
Innovator International Developed Power Buffer ETF - July            
Prospectus [Line Items]            
Annual Return [Percent] 21.18% 1.73% 14.42% (2.92%) 1.83% 1.02%
Innovator International Developed Power Buffer ETF - August            
Prospectus [Line Items]            
Annual Return [Percent] 17.58%          
Innovator International Developed Power Buffer ETF - September            
Prospectus [Line Items]            
Annual Return [Percent] 18.25% 5.31%        
Innovator International Developed Power Buffer ETF - October            
Prospectus [Line Items]            
Annual Return [Percent] 18.79% 4.93% 17.71% (6.05%)    
Innovator International Developed Power Buffer ETF - November            
Prospectus [Line Items]            
Annual Return [Percent] 20.24% 5.58%        
Innovator International Developed Power Buffer ETF - December            
Prospectus [Line Items]            
Annual Return [Percent] 21.90% 2.34%        
Innovator U.S. Small Cap Power Buffer ETF - January            
Prospectus [Line Items]            
Annual Return [Percent] 10.61% 9.30% 14.32% (7.41%) 11.76% 8.40%
Innovator U.S. Small Cap Power Buffer ETF - April            
Prospectus [Line Items]            
Annual Return [Percent] 7.68% 12.44% 14.84% (8.06%) 3.00%  
Innovator U.S. Small Cap Power Buffer ETF - June            
Prospectus [Line Items]            
Annual Return [Percent] 4.23%          
Innovator U.S. Small Cap Power Buffer ETF - July            
Prospectus [Line Items]            
Annual Return [Percent] 8.24% 8.55% 11.72% (8.47%) 2.11%  
Innovator U.S. Small Cap Power Buffer ETF - August            
Prospectus [Line Items]            
Annual Return [Percent] 6.08%          
Innovator U.S. Small Cap Power Buffer ETF - September            
Prospectus [Line Items]            
Annual Return [Percent] 9.10%          
Innovator U.S. Small Cap Power Buffer ETF - October            
Prospectus [Line Items]            
Annual Return [Percent] 10.43% 10.99% 9.21% (7.82%) 5.49% 2.51%
Innovator U.S. Small Cap Power Buffer ETF - November            
Prospectus [Line Items]            
Annual Return [Percent] 12.29%          
Innovator U.S. Small Cap Power Buffer ETF - December            
Prospectus [Line Items]            
Annual Return [Percent] 7.17%