FT Vest U.S. Equity Max Buffer ETF - November Average Annual Total Returns |
12 Months Ended | 14 Months Ended | 15 Months Ended | 17 Months Ended | 18 Months Ended | 21 Months Ended | ||||
|---|---|---|---|---|---|---|---|---|---|---|
May 31, 2026 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
|
| S&P 500® Index (reflects no deduction for fees, expenses or taxes)[Member] | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Average Annual Return, Percent | 17.88% | 16.41% | 15.19% | 16.11% | 16.82% | 17.92% | 19.06% | 17.38% | 18.32% | |
| FT Vest U.S. Equity Max Buffer ETF - November | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Average Annual Return, Percent | 7.32% | 6.94% | ||||||||
| Performance Inception Date | Nov. 15, 2024 | |||||||||
| FT Vest U.S. Equity Max Buffer ETF - November | After Taxes on Distributions | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Average Annual Return, Percent | 7.32% | 6.94% | ||||||||
| FT Vest U.S. Equity Max Buffer ETF - November | After Taxes on Distributions and Sales | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Average Annual Return, Percent | 4.33% | 5.29% | ||||||||