| Label | Element | Value |
|---|---|---|
| Innovator International Developed Power Buffer ETF™ - May | iShares MSCI EAFE ETF, Expiration: 04/30/2027; Exercise Price: $1.02 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 97.80% |
| Innovator International Developed Power Buffer ETF™ - May | iShares MSCI EAFE ETF, Expiration: 04/30/2027; Exercise Price: $102.32 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 6.70% |
| Innovator International Developed Power Buffer ETF™ - May | iShares MSCI EAFE ETF, Expiration: 04/30/2027; Exercise Price: $118.63 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | (1.90%) |
| Innovator International Developed Power Buffer ETF™ - May | iShares MSCI EAFE ETF, Expiration: 04/30/2027; Exercise Price: $86.97 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | (2.70%) |