Fees and Expenses - International Developed Markets Select Equity ETF	Oct. 31, 2025
Prospectus [Line Items]
Expense Heading [Optional Text]	Portfolio Fees and Expenses
Expense Narrative [Text Block]	This table describes the fees and expenses that you may pay if you buy, hold and sell shares of the Portfolio. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.
Other Expenses, New Fund, Based on Estimates [Text]	“Other Expenses” are based on estimated amounts for the first fiscal year.
Operating Expenses Caption [Optional Text]	Annual Portfolio Operating Expenses(Expenses that You Pay Each Year as a Percentage of the Value of Your Investment)
Expense Example [Heading]	Example:
Expense Example Narrative [Text Block]	This example is intended to help you compare the cost of investing in the Portfolio with the cost of investing in other funds. The example assumes that you invest $10,000 in the Portfolio for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Portfolio’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Portfolio Turnover [Heading]	Portfolio Turnover
Portfolio Turnover [Text Block]	The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Portfolio shares are held in a taxable account. These costs, which are not reflected in annual portfolio operating expenses or in the example, affect the Portfolio’s performance. During the most recent fiscal year, the Portfolio’s portfolio turnover rate, which was the portfolio turnover rate of the Portfolio’s predecessor portfolio, Harding Loevner International Developed Markets Equity Portfolio (the “Predecessor Portfolio”) was 28% of the average value of its portfolio.
Portfolio Turnover, Rate	28.00%

Fees and Expenses - International Developed Markets Select Equity ETF

Oct. 31, 2025

Portfolio Fees and Expenses

This table describes the fees and expenses that you may pay if you buy, hold and sell shares of the Portfolio. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

Other Expenses, New Fund, Based on Estimates [Text]

“Other Expenses” are based on estimated amounts for the first fiscal year.

Operating Expenses Caption [Optional Text]

Annual Portfolio Operating Expenses(Expenses that You Pay Each Year as a Percentage of the Value of Your Investment)

Expense Example [Heading]

Example:

Expense Example Narrative [Text Block]

This example is intended to help you compare the cost of investing in the Portfolio with the cost of investing in other funds. The example assumes that you invest $10,000 in the Portfolio for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Portfolio’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Portfolio Turnover [Heading]

Portfolio Turnover

Portfolio Turnover [Text Block]

The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Portfolio shares are held in a taxable account. These costs, which are not reflected in annual portfolio operating expenses or in the example, affect the Portfolio’s performance. During the most recent fiscal year, the Portfolio’s portfolio turnover rate, which was the portfolio turnover rate of the Portfolio’s predecessor portfolio, Harding Loevner International Developed Markets Equity Portfolio (the “Predecessor Portfolio”) was 28% of the average value of its portfolio.

Portfolio Turnover, Rate

28.00%