| Label | Element | Value |
|---|---|---|
| Innovator U.S. Equity Buffer ETF™ - August | SPDR S&P 500 ETF Trust, Expiration: 07/31/2026; Exercise Price: $6.33 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 101.90% |
| Innovator U.S. Equity Buffer ETF™ - August | SPDR S&P 500 ETF Trust, Expiration: 07/31/2026; Exercise Price: $632.09 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 0.70% |
| Innovator U.S. Equity Buffer ETF™ - August | SPDR S&P 500 ETF Trust, Expiration: 07/31/2026; Exercise Price: $575.19 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | (0.40%) |
| Innovator U.S. Equity Buffer ETF™ - August | SPDR S&P 500 ETF Trust, Expiration: 07/31/2026; Exercise Price: $732.01 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | (2.50%) |