Innovator U.S. Equity Buffer ETF - January Innovator U.S. Equity Power Buffer ETF - January Innovator U.S. Equity Ultra Buffer ETF - January Innovator U.S. Equity Buffer ETF - February Innovator U.S. Equity Power Buffer ETF - February Innovator U.S. Equity Ultra Buffer ETF - February Innovator U.S. Equity Buffer ETF - March Innovator U.S. Equity Power Buffer ETF - March Innovator U.S. Equity Ultra Buffer ETF - March Innovator U.S. Equity Buffer ETF - April Innovator U.S. Equity Power Buffer ETF - April Innovator U.S. Equity Ultra Buffer ETF - April Innovator U.S. Equity Buffer ETF - May Innovator U.S. Equity Power Buffer ETF - May Innovator U.S. Equity Ultra Buffer ETF - May Innovator U.S. Equity Buffer ETF - June Innovator U.S. Equity Power Buffer ETF - June Innovator U.S. Equity Ultra Buffer ETF - June Innovator U.S. Equity Buffer ETF - July Innovator U.S. Equity Power Buffer ETF - July Innovator U.S. Equity Ultra Buffer ETF - July Innovator U.S. Equity Buffer ETF - August Innovator U.S. Equity Power Buffer ETF - August Innovator U.S. Equity Ultra Buffer ETF - August Innovator U.S. Equity Buffer ETF - September Innovator U.S. Equity Power Buffer ETF - September Innovator U.S. Equity Ultra Buffer ETF - September Innovator U.S. Equity Buffer ETF - October Innovator U.S. Equity Power Buffer ETF - October Innovator U.S. Equity Ultra Buffer ETF - October Innovator U.S. Equity Buffer ETF - November Innovator U.S. Equity Power Buffer ETF - November Innovator U.S. Equity Ultra Buffer ETF - November Innovator U.S. Equity Buffer ETF - December Innovator U.S. Equity Power Buffer ETF - December Innovator U.S. Equity Ultra Buffer ETF - December Innovator U.S. Equity Buffer ETF - January Innovator U.S. Equity Power Buffer ETF - January Innovator U.S. Equity Ultra Buffer ETF - January Innovator U.S. Equity Buffer ETF - February Innovator U.S. Equity Power Buffer ETF - February Innovator U.S. Equity Ultra Buffer ETF - February Innovator U.S. Equity Buffer ETF - March Innovator U.S. Equity Power Buffer ETF - March Innovator U.S. Equity Ultra Buffer ETF - March Innovator U.S. Equity Buffer ETF - April Innovator U.S. Equity Power Buffer ETF - April Innovator U.S. Equity Ultra Buffer ETF - April Innovator U.S. Equity Buffer ETF - May Innovator U.S. Equity Power Buffer ETF - May Innovator U.S. Equity Ultra Buffer ETF - May Innovator U.S. Equity Buffer ETF - June Innovator U.S. Equity Power Buffer ETF - June Innovator U.S. Equity Ultra Buffer ETF - June Innovator U.S. Equity Buffer ETF - July Innovator U.S. Equity Power Buffer ETF - July Innovator U.S. Equity Ultra Buffer ETF - July Innovator U.S. Equity Buffer ETF - August Innovator U.S. Equity Power Buffer ETF - August Innovator U.S. Equity Ultra Buffer ETF - August Innovator U.S. Equity Buffer ETF - September Innovator U.S. Equity Power Buffer ETF - September Innovator U.S. Equity Ultra Buffer ETF - September Innovator U.S. Equity Buffer ETF - October Innovator U.S. Equity Power Buffer ETF - October Innovator U.S. Equity Ultra Buffer ETF - October Innovator U.S. Equity Buffer ETF - November Innovator U.S. Equity Power Buffer ETF - November Innovator U.S. Equity Ultra Buffer ETF - November Innovator U.S. Equity Buffer ETF - December Innovator U.S. Equity Power Buffer ETF - December Innovator U.S. Equity Ultra Buffer ETF - December 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) C000211458 Member C000190965 Member C000210832 Member S000063995 Member C000214098 Member S000067132 Member C000215175 Member Defined Outcome Strategy Risk Member C000215958 Member S000066828 Member S000065117 Member S000063477 Member C000205658 Member S000067827 Member S000058253 Member S000066061 Member C000214099 Member C000217572 Member C000205660 Member S000067131 Member C000219060 Member C000190964 Member C000213583 Member C000215959 Member S000068503 Member S000066060 Member C000210831 Member C000213581 Member S000065373 Member Derivatives Risk Member S000068076 Member Cyber Security Risk Member S000063994 Member C000211456 Member S000067826 Member C000207058 Member C000218119 Member S000065116 Member C000215177 Member S000066308 Member C000217571 Member C000219061 Member S000066826 Member S000063479 Member S000065372 Member S000068502 Member Tax Risk Member S000067133 Member S000058251 Member C000215957 Member S000068077 Member Underlying ETFRisk Member index_ SP_500_ Total_ Return_ Index_reflects_no_deduction_for_fees_expenses_or_taxes Member C000207057 Member C000218118 Member Concentration Risk Member S000065115 Member S000065371 Member Market Risk Member S000066062 Member C000210833 Member S000066309 Member S000063996 Member S000066307 Member C000219062 Member C000215176 Member C000205657 Member S000068075 Member C000211457 Member C000190966 Member Valuation Risk Member C000214097 Member C000207059 Member S000067825 Member C000218117 Member S000063478 Member S000066827 Member C000217573 Member S000058252 Member Risks Associated With ETFs Member C000213582 Member S000068504 Member index_ SP_500_ Price_ Return_ Index_reflects_no_deduction_for_fees_expenses_or_taxes Member