| Label | Element | Value |
|---|---|---|
| Innovator U.S. Equity Buffer ETF™ - November | SPDR S&P 500 ETF Trust, Expiration: 10/30/2026; Exercise Price: $6.83 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 99.30% |
| Innovator U.S. Equity Buffer ETF™ - November | SPDR S&P 500 ETF Trust, Expiration: 10/30/2026; Exercise Price: $682.07 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 2.70% |
| Innovator U.S. Equity Buffer ETF™ - November | SPDR S&P 500 ETF Trust, Expiration: 10/30/2026; Exercise Price: $802.17 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | (0.80%) |
| Innovator U.S. Equity Buffer ETF™ - November | SPDR S&P 500 ETF Trust, Expiration: 10/30/2026; Exercise Price: $620.67 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | (1.40%) |