v3.25.2
Average Annual Total Returns
 12 Months Ended 60 Months Ended 65 Months Ended
Oct. 31, 2024
Dec. 31, 2023
Dec. 31, 2023
Dec. 31, 2023
Innovator U.S. Equity Power Buffer ETF - July        
Prospectus [Line Items]        
Average Annual Return, Label [Optional Text] Return Before Taxes      
Average Annual Return, Percent   13.88% 8.96% 8.14%
Performance Inception Date Aug. 07, 2018      
Innovator U.S. Equity Power 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   13.88% 8.96% 8.08%
Innovator U.S. Equity Power 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   8.22% 7.09% 6.45%
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   25.02% 14.53% 13.83%
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   23.31% 12.73% 11.93%