Average Annual Total Returns |
12 Months Ended | 30 Months Ended | |
|---|---|---|---|
Aug. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2023 |
|
| S&P 500® Index (reflects no deduction for fees, expenses or taxes)[Member] | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 26.29% | 5.12% | |
| FT Vest U.S. Equity Enhance & Moderate Buffer ETF - June | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 14.93% | 7.05% | |
| Performance Inception Date | Jul. 12, 2021 | ||
| FT Vest U.S. Equity Enhance & Moderate Buffer ETF - June | After Taxes on Distributions | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 14.93% | 7.05% | |
| FT Vest U.S. Equity Enhance & Moderate Buffer ETF - June | After Taxes on Distributions and Sales | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 8.84% | 5.44% |