Innovator U.S. Equity Power Buffer ETF - August Innovator U.S. Equity Power Buffer ETF - August Defined Outcome Strategy Risk [Member] Derivatives Risk [Member] Underlying ETF Risk [Member] Concentration Risk [Member] Cyber Security 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 Valuation Risk Member Defined Outcome Strategy Risk Member Derivatives Risk Member Tax Risk Member Cyber Security Risk Member Underlying ETFRisk Member Risks Associated With ETFs Member index_ SP_500_ Total_ Return_ Index_reflects_no_deduction_for_fees_expenses_or_taxes Member Concentration Risk Member S000066061 Member C000213582 Member index_ SP_500_ Price_ Return_ Index_reflects_no_deduction_for_fees_expenses_or_taxes Member