| Label | Element | Value |
|---|---|---|
| Innovator U.S. Equity Ultra Buffer ETF™ - December | SPDR S&P 500 ETF Trust, Expiration: 11/30/2026; Exercise Price: $6.82 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 100.60% |
| Innovator U.S. Equity Ultra Buffer ETF™ - December | SPDR S&P 500 ETF Trust, Expiration: 11/30/2026; Exercise Price: $649.22 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 2.20% |
| Innovator U.S. Equity Ultra Buffer ETF™ - December | SPDR S&P 500 ETF Trust, Expiration: 11/30/2026; Exercise Price: $444.20 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | (0.30%) |
| Innovator U.S. Equity Ultra Buffer ETF™ - December | SPDR S&P 500 ETF Trust, Expiration: 11/30/2026; Exercise Price: $765.66 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | (2.70%) |