v3.26.1
Average Annual Total Returns
 5 Months Ended 12 Months Ended
Oct. 31, 2025
Dec. 31, 2024
Dec. 31, 2024
Innovator Growth-100 Power Buffer ETF - August      
Prospectus [Line Items]      
Average Annual Return, Label [Optional Text] Return Before Taxes    
Average Annual Return, Percent   14.78% 14.80%
Performance Inception Date Jul. 31, 2024    
Innovator Growth-100 Power Buffer ETF - August | After Taxes on Distributions      
Prospectus [Line Items]      
Average Annual Return, Label [Optional Text] Return After Taxes on Distributions    
Average Annual Return, Percent   14.78% 14.80%
Innovator Growth-100 Power Buffer ETF - August | 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   11.34% 8.76%
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   21.47% 21.02%
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   20.57% 20.17%