| Label | Element | Value |
|---|---|---|
| Innovator Buffer Step-Up Strategy ETF® | State Street SPDR S&P 500 ETF Trust, Expiration: 04/30/2027; Exercise Price: $7.23 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 98.90% |
| Innovator Buffer Step-Up Strategy ETF® | State Street SPDR S&P 500 ETF Trust, Expiration: 04/30/2027; Exercise Price: $718.70 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 5.80% |
| Innovator Buffer Step-Up Strategy ETF® | State Street SPDR S&P 500 ETF Trust, Expiration: 04/30/2027; Exercise Price: $841.84 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | (1.40%) |
| Innovator Buffer Step-Up Strategy ETF® | State Street SPDR S&P 500 ETF Trust, Expiration: 04/30/2027; Exercise Price: $654.02 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | (3.60%) |