| Label | Element | Value |
|---|---|---|
| Innovator International Developed Power Buffer ETF™ - April | iShares MSCI EAFE ETF, Expiration: 03/31/2027; Exercise Price: $0.97 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 100.00% |
| Innovator International Developed Power Buffer ETF™ - April | iShares MSCI EAFE ETF, Expiration: 03/31/2027; Exercise Price: $97.13 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 4.80% |
| Innovator International Developed Power Buffer ETF™ - April | iShares MSCI EAFE ETF, Expiration: 03/31/2027; Exercise Price: $82.56 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | (2.20%) |
| Innovator International Developed Power Buffer ETF™ - April | iShares MSCI EAFE ETF, Expiration: 03/31/2027; Exercise Price: $113.64 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | (2.70%) |