Label	Element	Value
Innovator Premium Income 15 Buffer ETF™ - January \| United States Treasury Bill [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Net Asset Value	oef_PctOfNav	98.70%
Innovator Premium Income 15 Buffer ETF™ - January \| 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™ - January \| 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™ - January \| 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™ - January \| 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™ - January \| 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™ - January \| 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™ - January \| 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™ - January \| SPDR S&P 500 ETF Trust, Expiration: 12/31/2026; Exercise Price: $582.51 (Short) [Member]
Holdings [Line Items]	oef_HoldingsLineItems
Percent of Net Asset Value	oef_PctOfNav	(1.50%)