| Label | Element | Value |
|---|---|---|
| Innovator U.S. Small Cap 10 Buffer ETF™ - Quarterly | iShares Russell 2000 ETF, Expiration: 06/30/2026; Exercise Price: $0.62 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 106.90% |
| Innovator U.S. Small Cap 10 Buffer ETF™ - Quarterly | iShares Russell 2000 ETF, Expiration: 06/30/2026; Exercise Price: $248.00 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 0.80% |
| Innovator U.S. Small Cap 10 Buffer ETF™ - Quarterly | iShares Russell 2000 ETF, Expiration: 06/30/2026; Exercise Price: $223.20 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | (0.30%) |
| Innovator U.S. Small Cap 10 Buffer ETF™ - Quarterly | iShares Russell 2000 ETF, Expiration: 06/30/2026; Exercise Price: $263.97 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | (7.50%) |