First Trust Developed Markets ex-US 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 AlphaDEX Fund | First Trust Developed Markets ex-US AlphaDEX Fund | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 51.78% | 7.02% | 13.89% | (18.57%) | 10.70% | 4.61% | 16.56% | (19.52%) | 33.57% | 3.55% |