First Trust Developed Markets ex-US Small Cap 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 Developed Markets ex-US Small Cap AlphaDEX Fund | First Trust Developed Markets ex-US Small Cap AlphaDEX Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 49.71% | 3.14% | 11.13% | (15.00%) | 11.09% | 12.18% | 19.13% | (24.03%) | 36.23% | 2.96% |