v3.26.3
Average Annual Total Returns
 12 Months Ended 45 Months Ended
Oct. 31, 2025
Dec. 31, 2024
Dec. 31, 2024
Innovator U.S. Equity Accelerated ETF - Quarterly      
Prospectus [Line Items]      
Average Annual Return, Label [Optional Text] Return Before Taxes    
Average Annual Return, Percent   14.10% 10.99%
Performance Inception Date Mar. 31, 2021    
Innovator U.S. Equity Accelerated ETF - Quarterly | After Taxes on Distributions      
Prospectus [Line Items]      
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions    
Average Annual Return, Percent   14.10% 10.99%
Innovator U.S. Equity Accelerated ETF - Quarterly | 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   8.35% 8.74%
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   17.88% 13.78%
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   16.39% 12.13%