Average Annual Total Returns |
12 Months Ended | 59 Months Ended | |
|---|---|---|---|
Dec. 31, 2024 |
Dec. 31, 2025 |
Dec. 31, 2025 |
|
| LBMA Gold Price (reflects no deduction for fees, expenses or taxes)[Member] | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 25.53% | 9.01% | |
| S&P 500® Index (reflects no deduction for fees, expenses or taxes)[Member] | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 25.02% | 13.03% | |
| FT Vest Gold Strategy Quarterly Buffer ETF | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 21.87% | 6.34% | |
| Performance Inception Date | Jan. 20, 2021 | ||
| FT Vest Gold Strategy Quarterly Buffer ETF | After Taxes on Distributions | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 11.95% | 2.98% | |
| FT Vest Gold Strategy Quarterly Buffer ETF | After Taxes on Distributions and Sales | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 12.97% | 3.44% |