Investment Objectives and Goals - FT Vest U.S. Equity Quarterly 15 Buffer ETF |
Aug. 05, 2026 |
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| Prospectus [Line Items] | |
| Risk/Return [Heading] | <span style="color:#000000;font-family:Arial;font-size:12.60pt;font-weight:bold;">FT Vest U.S. Equity Quarterly 15 Buffer ETF (SQBA)</span> |
| Objective [Heading] | <span style="color:#000000;font-family:Arial;font-size:9.90pt;font-weight:bold;">Investment Objective</span> |
| Objective, Primary [Text Block] | The investment objective of the FT Vest U.S. Equity Quarterly 15 Buffer ETF (the “Fund”) is to seek to provide investors with returns (before fees and expenses) that match the price return of the State Street® SPDR® S&P 500® ETF Trust (the "Underlying ETF"), up to a predetermined upside cap of ___% while providing a buffer (before fees and expenses) against the first 15% of Underlying ETF losses over the period from _______________ through _______________. |