Institutional Class Z [Member] 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 |
|
| Institutional Z | Harding Loevner Frontier Emerging Markets Portfolio | Institutional Class Z | ||||||||
| Prospectus [Line Items] | ||||||||
| Annual Return [Percent] | 17.13% | 9.05% | 10.90% | (18.81%) | 10.62% | 0.34% | 11.26% | (15.22%) |