First Trust Health Care AlphaDEX Fund Annual Total Returns |
12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
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 |
Dec. 31, 2015 |
|
| First Trust Health Care AlphaDEX Fund | First Trust Health Care AlphaDEX Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 1.10% | (4.50%) | (12.21%) | 15.18% | 27.85% | 22.31% | (1.26%) | 21.78% | (5.20%) | 0.23% |