Institutional [Member] Expense Example - Institutional - Harding Loevner International Equity Portfolio - Institutional Class	Oct. 31, 2025 USD ($)
Prospectus [Line Items]
Expense Example, with Redemption, 1 Year	$ 85
Expense Example, with Redemption, 3 Years	265
Expense Example, with Redemption, 5 Years	460
Expense Example, with Redemption, 10 Years	$ 1,025

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