| Label | Element | Value |
|---|---|---|
| Innovator Premium Income 20 Barrier ETF® - July | United States Treasury Bill [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 100.20% |
| Innovator Premium Income 20 Barrier ETF® - July | S&P 500 Index, Expiration: 06/30/2026; Exercise Price: $4,901.91 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 1.50% |
| Innovator Premium Income 20 Barrier ETF® - July | S&P 500 Mini Index, Expiration: 06/30/2026; Exercise Price: $496.39 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 0.00% |
| Innovator Premium Income 20 Barrier ETF® - July | S&P 500 Index, Expiration: 06/30/2026; Exercise Price: $4,963.96 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | (1.70%) |