Average Annual Total Returns |
12 Months Ended | 41 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% | 13.77% | |
| FT Vest U.S. Equity Deep Buffer ETF - July | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 17.98% | 5.58% | |
| Performance Inception Date | Jul. 17, 2020 | ||
| FT Vest U.S. Equity Deep Buffer ETF - July | After Taxes on Distributions | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 17.98% | 5.58% | |
| FT Vest U.S. Equity Deep Buffer ETF - July | After Taxes on Distributions and Sales | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 10.64% | 4.32% |