v3.25.2
Average Annual Total Returns
 12 Months Ended 33 Months Ended
Oct. 31, 2024
Dec. 31, 2023
Dec. 31, 2023
Innovator Growth Accelerated ETF - Quarterly      
Prospectus [Line Items]      
Average Annual Return, Label [Optional Text] Return Before Taxes    
Average Annual Return, Percent   31.45% 8.57%
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   31.45% 8.57%
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   18.62% 6.70%
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   25.88% 14.36%
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   24.88% 13.43%