First Trust Mid Cap Core 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 Mid Cap Core AlphaDEX Fund | First Trust Mid Cap Core AlphaDEX Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 12.35% | 20.43% | (13.75%) | 25.03% | 16.14% | 26.86% | (11.10%) | 17.61% | 18.67% | (8.09%) |