| Label | Element | Value |
|---|---|---|
| Innovator 20+ Year Treasury Bond 9 Buffer ETF™ - July | iShares 20+ Year Treasury Bond ETF, Expiration: 06/30/2026; Exercise Price: $0.88 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 96.50% |
| Innovator 20+ Year Treasury Bond 9 Buffer ETF™ - July | iShares 20+ Year Treasury Bond ETF, Expiration: 06/30/2026; Exercise Price: $88.28 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 3.70% |
| Innovator 20+ Year Treasury Bond 9 Buffer ETF™ - July | iShares 20+ Year Treasury Bond ETF, Expiration: 06/30/2026; Exercise Price: $131.23 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 0.00% |
| Innovator 20+ Year Treasury Bond 9 Buffer ETF™ - July | iShares 20+ Year Treasury Bond ETF, Expiration: 06/30/2026; Exercise Price: $80.33 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | (0.40%) |