Label	Element	Value
Innovator Premium Income 15 Buffer ETF™ - October \| United States Treasury Bill [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Net Asset Value	oef_PctOfNav	99.00%
Innovator Premium Income 15 Buffer ETF™ - October \| United States Treasury Bill [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Net Asset Value	oef_PctOfNav	0.50%
Innovator Premium Income 15 Buffer ETF™ - October \| United States Treasury Bill [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Net Asset Value	oef_PctOfNav	0.40%
Innovator Premium Income 15 Buffer ETF™ - October \| United States Treasury Bill [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Net Asset Value	oef_PctOfNav	0.40%
Innovator Premium Income 15 Buffer ETF™ - October \| United States Treasury Bill [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Net Asset Value	oef_PctOfNav	0.40%
Innovator Premium Income 15 Buffer ETF™ - October \| SPDR S&P 500 ETF Trust, Expiration: 09/30/2026; Exercise Price: $566.27 (Short) [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Net Asset Value	oef_PctOfNav	(0.70%)