FT Vest Emerging Markets Buffer ETF - December Average Annual Total Returns |
12 Months Ended | 15 Months Ended | ||
|---|---|---|---|---|
May 31, 2026 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
|
| MSCI Emerging Markets Index (reflects no deduction for fees, expenses or taxes)[Member] | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 32.90% | 33.57% | 22.83% | |
| FT Vest Emerging Markets Buffer ETF - December | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 20.33% | 21.43% | ||
| Performance Inception Date | Dec. 20, 2024 | |||
| FT Vest Emerging Markets Buffer ETF - December | After Taxes on Distributions | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 20.33% | 21.43% | ||
| FT Vest Emerging Markets Buffer ETF - December | After Taxes on Distributions and Sales | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 15.50% | 12.69% | ||