| Label | Element | Value |
|---|---|---|
| Innovator U.S. Equity Ultra Buffer ETF™ - January | SPDR S&P 500 ETF Trust, Expiration: 12/31/2026; Exercise Price: $6.81 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 101.20% |
| Innovator U.S. Equity Ultra Buffer ETF™ - January | SPDR S&P 500 ETF Trust, Expiration: 12/31/2026; Exercise Price: $647.82 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 2.60% |
| Innovator U.S. Equity Ultra Buffer ETF™ - January | SPDR S&P 500 ETF Trust, Expiration: 12/31/2026; Exercise Price: $443.25 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | (0.40%) |
| Innovator U.S. Equity Ultra Buffer ETF™ - January | SPDR S&P 500 ETF Trust, Expiration: 12/31/2026; Exercise Price: $759.66 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | (3.60%) |