| Label | Element | Value |
|---|---|---|
| Innovator U.S. Small Cap Power Buffer ETF™ - April | iShares Russell 2000 ETF, Expiration: 03/31/2027; Exercise Price: $2.48 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 104.00% |
| Innovator U.S. Small Cap Power Buffer ETF™ - April | iShares Russell 2000 ETF, Expiration: 03/31/2027; Exercise Price: $248.00 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 4.30% |
| Innovator U.S. Small Cap Power Buffer ETF™ - April | iShares Russell 2000 ETF, Expiration: 03/31/2027; Exercise Price: $210.80 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | (2.00%) |
| Innovator U.S. Small Cap Power Buffer ETF™ - April | iShares Russell 2000 ETF, Expiration: 03/31/2027; Exercise Price: $298.79 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | (6.50%) |