Label	Element	Value
Innovator Premium Income 15 Buffer ETF™ - April \| United States Treasury Bill [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Net Asset Value	oef_PctOfNav	96.20%
Innovator Premium Income 15 Buffer ETF™ - April \| United States Treasury Bill [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Net Asset Value	oef_PctOfNav	0.60%
Innovator Premium Income 15 Buffer ETF™ - April \| United States Treasury Bill [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Net Asset Value	oef_PctOfNav	0.60%
Innovator Premium Income 15 Buffer ETF™ - April \| 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™ - April \| 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™ - April \| 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™ - April \| 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™ - April \| 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™ - April \| 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™ - April \| United States Treasury Bill [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Net Asset Value	oef_PctOfNav	0.50%