| Label | Element | Value |
|---|---|---|
| Innovator U.S. Equity Buffer ETF™ - January | SPDR S&P 500 ETF Trust, Expiration: 12/31/2026; Exercise Price: $6.83 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 100.00% |
| Innovator U.S. Equity Buffer ETF™ - January | SPDR S&P 500 ETF Trust, Expiration: 12/31/2026; Exercise Price: $681.93 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 3.50% |
| Innovator U.S. Equity Buffer ETF™ - January | SPDR S&P 500 ETF Trust, Expiration: 12/31/2026; Exercise Price: $794.23 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | (1.70%) |
| Innovator U.S. Equity Buffer ETF™ - January | SPDR S&P 500 ETF Trust, Expiration: 12/31/2026; Exercise Price: $620.56 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | (2.00%) |