Innovator Premium Income 30 Barrier ETF - April Innovator Premium Income 30 Barrier ETF - April Defined Outcome Strategy Risk [Member] U.S. Treasury Security Risk [Member] Derivatives Risk [Member] Clearing Member Default Risk [Member] Counterparty Risk [Member] U.S. Equity Index Risk [Member] Correlation Risk [Member] Investment Objective Risk [Member] Cyber Security Risk [Member] Liquidity Risk [Member] Management Risk [Member] Market Risk [Member] Risks Associated with ETFs [Member] Tax Risk [Member] Valuation Risk [Member] S&P 500® Total Return Index (reflects no deduction for fees, expenses or taxes) S&P 500® Price Return Index (reflects no deduction for fees, expenses or taxes) Market Risk Member Investment Objective Risk Member USEquity Index Risk Member Management Risk Member Correlation Risk Member Valuation Risk Member Defined Outcome Strategy Risk Member Derivatives Risk Member S000080090 Member Tax Risk Member USTreasury Security Risk Member Cyber Security Risk Member C000241738 Member Risks Associated With ETFs Member index_ SP_500_ Total_ Return_ Index_reflects_no_deduction_for_fees_expenses_or_taxes Member Clearing Member Default Risk Member Counterparty Risk Member Liquidity Risk Member index_ SP_500_ Price_ Return_ Index_reflects_no_deduction_for_fees_expenses_or_taxes Member