v3.26.3
Expense Example - Innovator U.S. Small Cap 10 Buffer ETF - Quarterly - Innovator U.S. Small Cap 10 Buffer ETF - Quarterly
Oct. 31, 2025
USD ($)
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 81
Expense Example, with Redemption, 3 Years 252
Expense Example, with Redemption, 5 Years 439
Expense Example, with Redemption, 10 Years $ 978