Investment Objectives and Goals - FT Vest Gold Strategy Quarterly Buffer ETF |
Dec. 31, 2024 |
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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 Gold Strategy Quarterly Buffer ETF (BGLD)</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 Gold Strategy Quarterly Buffer ETF (the “Fund”) is to seek to provide investors with returns (before fees and expenses) that match the price return of the SPDR® Gold Trust (the “Underlying ETF”), up to a predetermined upside cap of 11.51% while providing a buffer (before fees and expenses) against Underlying ETF losses between -5% and -15% over the period from March 2, 2026 through May 29, 2026. |