v3.25.2
Average Annual Total Returns
 3 Months Ended 12 Months Ended
Oct. 31, 2024
Dec. 31, 2023
Dec. 31, 2023
Innovator U.S. Equity 10 Buffer ETF - Quarterly      
Prospectus [Line Items]      
Average Annual Return, Label [Optional Text] Return Before Taxes    
Average Annual Return, Percent   12.82% 12.20%
Performance Inception Date Sep. 29, 2023    
Innovator U.S. Equity 10 Buffer ETF - Quarterly | After Taxes on Distributions      
Prospectus [Line Items]      
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions    
Average Annual Return, Percent   12.82% 12.20%
Innovator U.S. Equity 10 Buffer 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   9.80% 7.22%
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   30.48% 25.02%
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   28.64% 23.31%