| Label | Element | Value |
|---|---|---|
| Innovator U.S. Equity Buffer ETF™ - June | SPDR S&P 500 ETF Trust, Expiration: 05/29/2026; Exercise Price: $5.91 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 105.50% |
| Innovator U.S. Equity Buffer ETF™ - June | SPDR S&P 500 ETF Trust, Expiration: 05/29/2026; Exercise Price: $589.40 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 0.10% |
| Innovator U.S. Equity Buffer ETF™ - June | SPDR S&P 500 ETF Trust, Expiration: 05/29/2026; Exercise Price: $536.34 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 0.00% |
| Innovator U.S. Equity Buffer ETF™ - June | SPDR S&P 500 ETF Trust, Expiration: 05/29/2026; Exercise Price: $685.28 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | (5.80%) |