v3.26.3
Average Annual Total Returns
 12 Months Ended 45 Months Ended
Oct. 31, 2025
Dec. 31, 2024
Dec. 31, 2024
Innovator Growth Accelerated ETF - Quarterly      
Prospectus [Line Items]      
Average Annual Return, Label [Optional Text] Return Before Taxes    
Average Annual Return, Percent   13.61% 9.61%
Performance Inception Date Mar. 31, 2021    
Innovator Growth 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   13.61% 9.61%
Innovator Growth 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   8.06% 7.60%
Nasdaq-100 Total Return Index (reflects no deduction for fees, expenses or taxes)      
Prospectus [Line Items]      
Average Annual Return, Label [Optional Text] Nasdaq-100 Total Return Index (reflects no deduction for fees, expenses or taxes)    
Average Annual Return, Percent   21.02% 15.73%
Nasdaq-100 Price Return Index (reflects no deduction for fees, expenses or taxes)      
Prospectus [Line Items]      
Average Annual Return, Label [Optional Text] Nasdaq-100 Price Return Index (reflects no deduction for fees, expenses or taxes)    
Average Annual Return, Percent   20.17% 14.82%