| Label | Element | Value |
|---|---|---|
| Innovator Equity Defined Protection ETF® - 2 Yr to January 2028 | SPDR S&P 500 ETF Trust, Expiration: 12/31/2027; Exercise Price: $12.27 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 102.20% |
| Innovator Equity Defined Protection ETF® - 2 Yr to January 2028 | SPDR S&P 500 ETF Trust, Expiration: 12/31/2027; Exercise Price: $681.92 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 6.10% |
| Innovator Equity Defined Protection ETF® - 2 Yr to January 2028 | SPDR S&P 500 ETF Trust, Expiration: 12/31/2027; Exercise Price: $772.68 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | (8.50%) |