| Label | Element | Value |
|---|---|---|
| Innovator U.S. Equity Buffer ETF™ - February | State Street SPDR S&P 500 ETF Trust, Expiration: 01/29/2027; Exercise Price: $6.93 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 99.70% |
| Innovator U.S. Equity Buffer ETF™ - February | State Street SPDR S&P 500 ETF Trust, Expiration: 01/29/2027; Exercise Price: $691.98 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 4.00% |
| Innovator U.S. Equity Buffer ETF™ - February | State Street SPDR S&P 500 ETF Trust, Expiration: 01/29/2027; Exercise Price: $806.91 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | (1.60%) |
| Innovator U.S. Equity Buffer ETF™ - February | State Street SPDR S&P 500 ETF Trust, Expiration: 01/29/2027; Exercise Price: $629.71 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | (2.40%) |