| Label | Element | Value |
|---|---|---|
| Innovator U.S. Equity Buffer ETF™ - October | SPDR S&P 500 ETF Trust, Expiration: 09/30/2026; Exercise Price: $6.68 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 100.20% |
| Innovator U.S. Equity Buffer ETF™ - October | SPDR S&P 500 ETF Trust, Expiration: 09/30/2026; Exercise Price: $666.19 [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 2.00% |
| Innovator U.S. Equity Buffer ETF™ - October | SPDR S&P 500 ETF Trust, Expiration: 09/30/2026; Exercise Price: $606.24 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | (1.00%) |
| Innovator U.S. Equity Buffer ETF™ - October | SPDR S&P 500 ETF Trust, Expiration: 09/30/2026; Exercise Price: $768.64 (Short) [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | (1.50%) |