v3.26.1
Average Annual Total Returns
 12 Months Ended 42 Months Ended
Oct. 31, 2025
Dec. 31, 2024
Dec. 31, 2024
Innovator Growth Accelerated Plus ETF - July      
Prospectus [Line Items]      
Average Annual Return, Label [Optional Text] Return Before Taxes    
Average Annual Return, Percent   20.95% 10.07%
Performance Inception Date Jun. 30, 2021    
Innovator Growth Accelerated Plus ETF - July | After Taxes on Distributions      
Prospectus [Line Items]      
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions    
Average Annual Return, Percent   20.95% 10.07%
Innovator Growth Accelerated Plus 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   12.40% 7.96%
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% 13.91%
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% 13.01%