| Label | Element | Value |
|---|---|---|
| Innovator U.S. Equity Ultra Buffer ETF™ - September | SPDR S&P 500 ETF Trust, Expiration: 08/31/2026; Exercise Price: $6.44 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 103.70% |
| Innovator U.S. Equity Ultra Buffer ETF™ - September | SPDR S&P 500 ETF Trust, Expiration: 08/31/2026; Exercise Price: $612.80 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 0.80% |
| Innovator U.S. Equity Ultra Buffer ETF™ - September | SPDR S&P 500 ETF Trust, Expiration: 08/31/2026; Exercise Price: $419.28 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | (0.10%) |
| Innovator U.S. Equity Ultra Buffer ETF™ - September | SPDR S&P 500 ETF Trust, Expiration: 08/31/2026; Exercise Price: $717.17 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | (4.70%) |