First Trust Switzerland AlphaDEX Fund Annual Total Returns |
12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|
| First Trust Switzerland AlphaDEX Fund | First Trust Switzerland AlphaDEX Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 30.16% | (1.25%) | 22.07% | (20.88%) | 19.34% | 14.50% | 25.91% | (15.11%) | 31.26% | 4.21% |