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
Dec. 31, 2019
Innovator U.S. Equity Buffer ETF - January              
Prospectus [Line Items]              
Annual Return [Percent] 14.79% 17.22% 23.48% (11.21%) 13.98% 12.53% 21.37%
Innovator U.S. Equity Power Buffer ETF - January              
Prospectus [Line Items]              
Annual Return [Percent] 11.28% 13.48% 18.05% (5.22%) 8.87% 7.73% 13.05%
Innovator U.S. Equity Ultra Buffer ETF - January              
Prospectus [Line Items]              
Annual Return [Percent] 11.07% 13.16% 15.60% (5.73%) 5.91% 6.93% 11.12%
Innovator U.S. Equity Buffer ETF - February              
Prospectus [Line Items]              
Annual Return [Percent] 12.89% 17.48% 22.48% (6.63%) 17.92%    
Innovator U.S. Equity Power Buffer ETF - February              
Prospectus [Line Items]              
Annual Return [Percent] 10.52% 12.81% 15.08% (2.82%) 11.16%    
Innovator U.S. Equity Ultra Buffer ETF - February              
Prospectus [Line Items]              
Annual Return [Percent] 10.44% 13.04% 11.97% (5.97%) 7.33%    
Innovator U.S. Equity Buffer ETF - March              
Prospectus [Line Items]              
Annual Return [Percent] 14.88% 16.48% 23.20% (6.97%) 16.46%    
Innovator U.S. Equity Power Buffer ETF - March              
Prospectus [Line Items]              
Annual Return [Percent] 11.91% 12.73% 16.20% (2.66%) 10.47%    
Innovator U.S. Equity Ultra Buffer ETF - March              
Prospectus [Line Items]              
Annual Return [Percent] 11.80% 13.05% 12.54% (5.60%) 7.07%    
Innovator U.S. Equity Buffer ETF - April              
Prospectus [Line Items]              
Annual Return [Percent] 8.15% 16.11% 22.97% (6.68%) 12.09% 6.25%  
Innovator U.S. Equity Power Buffer ETF - April              
Prospectus [Line Items]              
Annual Return [Percent] 6.56% 12.49% 16.11% (4.23%) 7.39% 4.58%  
Innovator U.S. Equity Ultra Buffer ETF - April              
Prospectus [Line Items]              
Annual Return [Percent] 6.18% 12.58% 10.82% (5.62%) 4.97% (5.08%)  
Innovator U.S. Equity Buffer ETF - May              
Prospectus [Line Items]              
Annual Return [Percent] 11.05% 19.17% 16.76% (12.61%) 11.94%    
Innovator U.S. Equity Power Buffer ETF - May              
Prospectus [Line Items]              
Annual Return [Percent] 10.22% 14.16% 12.30% (8.38%) 7.57%    
Innovator U.S. Equity Ultra Buffer ETF - May              
Prospectus [Line Items]              
Annual Return [Percent] 8.58% 14.43% 12.54% (9.09%) 5.19%    
Innovator U.S. Equity Buffer ETF - June              
Prospectus [Line Items]              
Annual Return [Percent] 12.51% 16.48% 16.87% (11.46%) 10.62% 9.94%  
Innovator U.S. Equity Power Buffer ETF - June              
Prospectus [Line Items]              
Annual Return [Percent] 11.54% 12.54% 12.32% (7.57%) 6.68% 10.41%  
Innovator U.S. Equity Ultra Buffer ETF - June              
Prospectus [Line Items]              
Annual Return [Percent] 10.47% 12.61% 12.27% (8.80%) 4.74% 7.12%  
Innovator U.S. Equity Buffer ETF - July              
Prospectus [Line Items]              
Annual Return [Percent] 13.76% 18.87% 21.54% (7.25%) 10.72% 8.62% 18.07%
Innovator U.S. Equity Power Buffer ETF - July              
Prospectus [Line Items]              
Annual Return [Percent] 12.83% 13.88% 20.04% (2.07%) 6.70% 7.51% 12.88%
Innovator U.S. Equity Ultra Buffer ETF - July              
Prospectus [Line Items]              
Annual Return [Percent] 12.29% 13.97% 17.78% (6.74%) 4.43% 4.68% 12.74%
Innovator U.S. Equity Buffer ETF - August              
Prospectus [Line Items]              
Annual Return [Percent] 14.72% 21.32% 20.07% (10.19%) 12.04% 11.56%  
Innovator U.S. Equity Power Buffer ETF - August              
Prospectus [Line Items]              
Annual Return [Percent] 12.28% 15.55% 17.90% (6.85%) 7.28% 9.47%  
Innovator U.S. Equity Ultra Buffer ETF - August              
Prospectus [Line Items]              
Annual Return [Percent] 12.34% 15.67% 17.70% (10.60%) 4.91% 7.48%  
Innovator U.S. Equity Buffer ETF - September              
Prospectus [Line Items]              
Annual Return [Percent] 14.75% 17.11% 20.87% (9.08%) 14.51% 12.38%  
Innovator U.S. Equity Power Buffer ETF - September              
Prospectus [Line Items]              
Annual Return [Percent] 11.72% 12.56% 18.91% (3.84%) 8.77% 8.46%  
Innovator U.S. Equity Ultra Buffer ETF - September              
Prospectus [Line Items]              
Annual Return [Percent] 11.56% 12.44% 19.06% (8.19%) 5.85% 6.86%  
Innovator U.S. Equity Buffer ETF - October              
Prospectus [Line Items]              
Annual Return [Percent] 14.23% 12.47% 21.42% (8.16%) 14.75% 14.45% 18.37%
Innovator U.S. Equity Power Buffer ETF - October              
Prospectus [Line Items]              
Annual Return [Percent] 10.94% 9.52% 20.27% (1.09%) 9.13% 10.20% 12.72%
Innovator U.S. Equity Ultra Buffer ETF - October              
Prospectus [Line Items]              
Annual Return [Percent] 10.48% 9.12% 19.08% (4.39%) 5.83% 7.58% 11.32%
Innovator U.S. Equity Buffer ETF - November              
Prospectus [Line Items]              
Annual Return [Percent] 12.96% 12.71% 17.26% (9.44%) 10.38% 11.67%  
Innovator U.S. Equity Power Buffer ETF - November              
Prospectus [Line Items]              
Annual Return [Percent] 10.34% 9.98% 14.15% (2.35%) 6.73% 10.42%  
Innovator U.S. Equity Ultra Buffer ETF - November              
Prospectus [Line Items]              
Annual Return [Percent] 9.71% 9.58% 14.31% (6.18%) 4.55% 8.17%  
Innovator U.S. Equity Buffer ETF - December              
Prospectus [Line Items]              
Annual Return [Percent] 14.87% 12.60% 20.06% (9.26%) 14.94% 13.57%  
Innovator U.S. Equity Power Buffer ETF - December              
Prospectus [Line Items]              
Annual Return [Percent] 13.04% 9.29% 17.89% (6.13%) 9.64% 8.24%  
Innovator U.S. Equity Ultra Buffer ETF - December              
Prospectus [Line Items]              
Annual Return [Percent] 13.06% 9.43% 16.79% (9.33%) 6.39% 6.68%