First Trust Mid Cap Growth 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 Growth AlphaDEX Fund | First Trust Mid Cap Growth AlphaDEX Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 18.27% | 21.06% | (23.82%) | 13.38% | 36.90% | 32.57% | (7.36%) | 24.92% | 9.42% | (1.20%) |