| Label | Element | Value |
|---|---|---|
| Innovator U.S. Equity Buffer ETF™ - September | SPDR S&P 500 ETF Trust, Expiration: 08/31/2026; Exercise Price: $6.46 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 101.50% |
| Innovator U.S. Equity Buffer ETF™ - September | SPDR S&P 500 ETF Trust, Expiration: 08/31/2026; Exercise Price: $645.06 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 1.20% |
| Innovator U.S. Equity Buffer ETF™ - September | SPDR S&P 500 ETF Trust, Expiration: 08/31/2026; Exercise Price: $587.00 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | (0.60%) |
| Innovator U.S. Equity Buffer ETF™ - September | SPDR S&P 500 ETF Trust, Expiration: 08/31/2026; Exercise Price: $744.13 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | (2.40%) |