| Label | Element | Value |
|---|---|---|
| Innovator U.S. Equity Ultra Buffer ETF™ - October | SPDR S&P 500 ETF Trust, Expiration: 09/30/2026; Exercise Price: $6.65 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 101.80% |
| Innovator U.S. Equity Ultra Buffer ETF™ - October | SPDR S&P 500 ETF Trust, Expiration: 09/30/2026; Exercise Price: $632.87 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 1.40% |
| Innovator U.S. Equity Ultra Buffer ETF™ - October | SPDR S&P 500 ETF Trust, Expiration: 09/30/2026; Exercise Price: $433.02 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | (0.20%) |
| Innovator U.S. Equity Ultra Buffer ETF™ - October | SPDR S&P 500 ETF Trust, Expiration: 09/30/2026; Exercise Price: $739.66 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | (3.20%) |