| Label | Element | Value |
|---|---|---|
| Innovator U.S. Small Cap Power Buffer ETF™ - September | iShares Russell 2000 ETF, Expiration: 08/31/2026; Exercise Price: $2.35 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 105.50% |
| Innovator U.S. Small Cap Power Buffer ETF™ - September | iShares Russell 2000 ETF, Expiration: 08/31/2026; Exercise Price: $235.17 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 1.20% |
| Innovator U.S. Small Cap Power Buffer ETF™ - September | iShares Russell 2000 ETF, Expiration: 08/31/2026; Exercise Price: $199.89 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | (0.40%) |
| Innovator U.S. Small Cap Power Buffer ETF™ - September | iShares Russell 2000 ETF, Expiration: 08/31/2026; Exercise Price: $275.62 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | (6.50%) |