v3.25.4
Average Annual Total Returns
 6 Months Ended 9 Months Ended 12 Months Ended 15 Months Ended 18 Months Ended 21 Months Ended
Oct. 31, 2025
Dec. 31, 2024
Dec. 31, 2024
Dec. 31, 2024
Dec. 31, 2024
Dec. 31, 2024
Dec. 31, 2024
Dec. 31, 2024
Dec. 31, 2024
Dec. 31, 2024
Innovator Premium Income 20 Barrier ETF - January                    
Prospectus [Line Items]                    
Average Annual Return, Label [Optional Text] Return Before Taxes                  
Average Annual Return, Percent       6.40% 6.72%          
Performance Inception Date Dec. 29, 2023                  
Innovator Premium Income 20 Barrier ETF - January | After Taxes on Distributions                    
Prospectus [Line Items]                    
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions                  
Average Annual Return, Percent       3.91% 4.17%          
Innovator Premium Income 20 Barrier ETF - January | After Taxes on Distributions and Sales                    
Prospectus [Line Items]                    
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions and Sale of Fund Shares                  
Average Annual Return, Percent       3.89% 4.14%          
Innovator Premium Income 30 Barrier ETF - January                    
Prospectus [Line Items]                    
Average Annual Return, Label [Optional Text] Return Before Taxes                  
Average Annual Return, Percent       5.23% 5.61%          
Performance Inception Date Dec. 29, 2023                  
Innovator Premium Income 30 Barrier ETF - January | After Taxes on Distributions                    
Prospectus [Line Items]                    
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions                  
Average Annual Return, Percent       3.26% 3.49%          
Innovator Premium Income 30 Barrier ETF - January | After Taxes on Distributions and Sales                    
Prospectus [Line Items]                    
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions and Sale of Fund Shares                  
Average Annual Return, Percent       3.23% 3.45%          
Innovator Premium Income 15 Buffer ETF - January                    
Prospectus [Line Items]                    
Average Annual Return, Label [Optional Text] Return Before Taxes                  
Average Annual Return, Percent       5.37%   5.70%        
Performance Inception Date Dec. 31, 2023                  
Innovator Premium Income 15 Buffer ETF - January | After Taxes on Distributions                    
Prospectus [Line Items]                    
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions                  
Average Annual Return, Percent       3.33%   3.77%        
Innovator Premium Income 15 Buffer ETF - January | After Taxes on Distributions and Sales                    
Prospectus [Line Items]                    
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions and Sale of Fund Shares                  
Average Annual Return, Percent       3.15%   3.53%        
Innovator Premium Income 20 Barrier ETF -- April                    
Prospectus [Line Items]                    
Average Annual Return, Label [Optional Text] Return Before Taxes                  
Average Annual Return, Percent       6.94%           7.62%
Performance Inception Date Mar. 31, 2023                  
Innovator Premium Income 20 Barrier ETF -- April | After Taxes on Distributions                    
Prospectus [Line Items]                    
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions                  
Average Annual Return, Percent       4.58%           5.00%
Innovator Premium Income 20 Barrier ETF -- April | After Taxes on Distributions and Sales                    
Prospectus [Line Items]                    
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions and Sale of Fund Shares                  
Average Annual Return, Percent       4.50%           4.88%
Innovator Premium Income 30 Barrier ETF - April                    
Prospectus [Line Items]                    
Average Annual Return, Label [Optional Text] Return Before Taxes                  
Average Annual Return, Percent       5.54%           6.31%
Performance Inception Date Mar. 31, 2023                  
Innovator Premium Income 30 Barrier ETF - April | After Taxes on Distributions                    
Prospectus [Line Items]                    
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions                  
Average Annual Return, Percent       3.52%           4.05%
Innovator Premium Income 30 Barrier ETF - April | After Taxes on Distributions and Sales                    
Prospectus [Line Items]                    
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions and Sale of Fund Shares                  
Average Annual Return, Percent       3.53%           3.98%
Innovator Premium Income 15 Buffer ETF - April                    
Prospectus [Line Items]                    
Average Annual Return, Label [Optional Text] Return Before Taxes                  
Average Annual Return, Percent     6.11% 5.79%            
Performance Inception Date Mar. 28, 2024                  
Innovator Premium Income 15 Buffer ETF - April | After Taxes on Distributions                    
Prospectus [Line Items]                    
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions                  
Average Annual Return, Percent     4.20% 3.87%            
Innovator Premium Income 15 Buffer ETF - April | After Taxes on Distributions and Sales                    
Prospectus [Line Items]                    
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions and Sale of Fund Shares                  
Average Annual Return, Percent     3.85% 3.40%            
Innovator Premium Income 20 Barrier ETF - July                    
Prospectus [Line Items]                    
Average Annual Return, Label [Optional Text] Return Before Taxes                  
Average Annual Return, Percent       7.09%         7.54%  
Performance Inception Date Jun. 30, 2023                  
Innovator Premium Income 20 Barrier ETF - July | After Taxes on Distributions                    
Prospectus [Line Items]                    
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions                  
Average Annual Return, Percent       4.51%         4.93%  
Innovator Premium Income 20 Barrier ETF - July | After Taxes on Distributions and Sales                    
Prospectus [Line Items]                    
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions and Sale of Fund Shares                  
Average Annual Return, Percent       4.53%         4.80%  
Innovator Premium Income 30 Barrier ETF - July                    
Prospectus [Line Items]                    
Average Annual Return, Label [Optional Text] Return Before Taxes                  
Average Annual Return, Percent       5.87%         6.43%  
Performance Inception Date Jun. 30, 2023                  
Innovator Premium Income 30 Barrier ETF - July | After Taxes on Distributions                    
Prospectus [Line Items]                    
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions                  
Average Annual Return, Percent       3.71%         4.12%  
Innovator Premium Income 30 Barrier ETF - July | After Taxes on Distributions and Sales                    
Prospectus [Line Items]                    
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions and Sale of Fund Shares                  
Average Annual Return, Percent       3.72%         4.03%  
Innovator Premium Income 15 Buffer ETF - July                    
Prospectus [Line Items]                    
Average Annual Return, Label [Optional Text] Return Before Taxes                  
Average Annual Return, Percent   6.17%   5.80%            
Performance Inception Date Jun. 28, 2024                  
Innovator Premium Income 15 Buffer ETF - July | After Taxes on Distributions                    
Prospectus [Line Items]                    
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions                  
Average Annual Return, Percent   4.23%   3.86%            
Innovator Premium Income 15 Buffer ETF - July | After Taxes on Distributions and Sales                    
Prospectus [Line Items]                    
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions and Sale of Fund Shares                  
Average Annual Return, Percent   3.88%   3.40%            
Innovator Premium Income 20 Barrier ETF - October                    
Prospectus [Line Items]                    
Average Annual Return, Label [Optional Text] Return Before Taxes                  
Average Annual Return, Percent       6.73%     7.39%      
Performance Inception Date Sep. 29, 2023                  
Innovator Premium Income 20 Barrier ETF - October | After Taxes on Distributions                    
Prospectus [Line Items]                    
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions                  
Average Annual Return, Percent       4.38%     4.79%      
Innovator Premium Income 20 Barrier ETF - October | After Taxes on Distributions and Sales                    
Prospectus [Line Items]                    
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions and Sale of Fund Shares                  
Average Annual Return, Percent       4.29%     4.69%      
Innovator Premium Income 30 Barrier ETF - October                    
Prospectus [Line Items]                    
Average Annual Return, Label [Optional Text] Return Before Taxes                  
Average Annual Return, Percent       5.71%     6.23%      
Performance Inception Date Sep. 29, 2023                  
Innovator Premium Income 30 Barrier ETF - October | After Taxes on Distributions                    
Prospectus [Line Items]                    
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions                  
Average Annual Return, Percent       3.77%     3.98%      
Innovator Premium Income 30 Barrier ETF - October | After Taxes on Distributions and Sales                    
Prospectus [Line Items]                    
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions and Sale of Fund Shares                  
Average Annual Return, Percent       3.58%     3.89%      
Innovator Premium Income 15 Buffer ETF - October                    
Prospectus [Line Items]                    
Average Annual Return, Label [Optional Text] Return Before Taxes                  
Average Annual Return, Percent       5.60%       6.23%    
Performance Inception Date Oct. 02, 2023                  
Innovator Premium Income 15 Buffer ETF - October | After Taxes on Distributions                    
Prospectus [Line Items]                    
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions                  
Average Annual Return, Percent       3.42%       4.21%    
Innovator Premium Income 15 Buffer ETF - October | After Taxes on Distributions and Sales                    
Prospectus [Line Items]                    
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions and Sale of Fund Shares                  
Average Annual Return, Percent       3.28%       3.90%    
S&P 500® Total Return Index (reflects no deduction for fees, expenses or taxes)                    
Prospectus [Line Items]                    
Average Annual Return, Label [Optional Text] S&P 500® Total Return Index (reflects no deduction for fees, expenses or taxes)                  
Average Annual Return, Percent   17.66% 17.72% 17.88% 21.33% 21.33% 24.74% 24.74% 20.41% 22.06%
S&P 500® Price Return Index (reflects no deduction for fees, expenses or taxes)                    
Prospectus [Line Items]                    
Average Annual Return, Label [Optional Text] S&P 500® Price Return Index (reflects no deduction for fees, expenses or taxes)                  
Average Annual Return, Percent   16.15% 16.20% 16.39% 19.74% 19.74% 23.05% 23.05% 18.76% 20.36%