| Label | Element | Value |
|---|---|---|
| Innovator U.S. Small Cap Power Buffer ETF™ - January | iShares MSCI Emerging Markets ETF, Expiration: 12/31/2026; Exercise Price: $2.46 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 104.40% |
| Innovator U.S. Small Cap Power Buffer ETF™ - January | iShares MSCI Emerging Markets ETF, Expiration: 12/31/2026; Exercise Price: $246.16 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 3.40% |
| Innovator U.S. Small Cap Power Buffer ETF™ - January | iShares MSCI Emerging Markets ETF, Expiration: 12/31/2026; Exercise Price: $209.24 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | (1.30%) |
| Innovator U.S. Small Cap Power Buffer ETF™ - January | iShares MSCI Emerging Markets ETF, Expiration: 12/31/2026; Exercise Price: $288.82 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | (6.70%) |