| Label | Element | Value |
|---|---|---|
| Innovator U.S. Equity Buffer ETF™ - March | State Street SPDR S&P 500 ETF Trust, Expiration: 02/26/2027; Exercise Price: $6.87 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 100.30% |
| Innovator U.S. Equity Buffer ETF™ - March | State Street SPDR S&P 500 ETF Trust, Expiration: 02/26/2027; Exercise Price: $686.00 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 4.10% |
| Innovator U.S. Equity Buffer ETF™ - March | State Street SPDR S&P 500 ETF Trust, Expiration: 02/26/2027; Exercise Price: $802.47 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | (2.10%) |
| Innovator U.S. Equity Buffer ETF™ - March | State Street SPDR S&P 500 ETF Trust, Expiration: 02/26/2027; Exercise Price: $624.26 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | (2.50%) |