Investment Risks - International Developed Markets Select Equity ETF	Oct. 31, 2025
Currency Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Currency Risk. Foreign currencies may experience steady or sudden devaluation relative to the U.S. dollar, adversely affecting the value of the Portfolio’s investments. Because the Portfolio’s net asset value is determined on the basis of U.S. dollars, if the local currency of a foreign market depreciates against the U.S. dollar, you may lose money even if the foreign market prices of the Portfolio’s holdings rise.
Foreign Investment Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Foreign Investment Risk. Securities issued by foreign entities involve risks not associated with U.S. investments. These risks include additional taxation, political, economic, social, geopolitical or diplomatic instability, and the above-mentioned possibility of changes in foreign currency exchange rates. There may also be less publicly-available information about a foreign issuer. Such risks may be magnified with respect to securities of issuers in frontier emerging markets.
Authorized Participant Concentration Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Authorized Participant Concentration Risk. The Portfolio may have a limited number of intermediaries that act as authorized participants and none of these authorized participants is or will be obligated to engage in creation or redemption transactions. To the extent that these intermediaries exit the business or are unable to or choose not to proceed with creation and/or redemption orders with respect to the Portfolio and no other authorized participant creates or redeems, Shares may trade at a discount to net asset value and possibly face trading halts and/or delisting. Authorized participant concentration risk may be heightened for ETFs that invest in securities issued by non‑U.S. issuers or other securities or instruments that have lower trading volumes.
Large Shareholder Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Large Shareholder Risk. Certain shareholders may from time to time own a substantial amount of the Portfolio’s shares. In addition, a third party investor, an Authorized Participant (as defined in the “Creations and Redemptions” section below), a market maker, or another entity may invest in the Portfolio and hold its investment for a limited period of time. There can be no assurance that any large shareholder would not redeem or sell its investment. To the extent effected in cash, redemptions of a large number of Portfolio shares could require the Portfolio to dispose of assets to meet the redemption requests, which can accelerate the realization of taxable income and/or capital gains and cause the Portfolio to make taxable distributions to its shareholders earlier than the Portfolio otherwise would have. In some circumstances, the Portfolio may hold a relatively large proportion of its assets in cash in anticipation of large redemptions (to the extent redemptions are effected in cash), diluting its investment returns. These large redemptions may also force the Portfolio to sell portfolio securities when it might not otherwise do so, which may negatively impact the Portfolio’s performance.
Market Trading Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Market Trading Risk. The net asset value (“NAV”) of the Portfolio and the value of your investment may fluctuate. Market prices of shares may fluctuate, in some cases significantly, in response to the Portfolio’s NAV, the intraday value of the Portfolio’s holdings and supply and demand for shares. The Portfolio faces numerous market trading risks, including disruptions to creations and redemptions, the existence of extreme market volatility or potential lack of an active trading market for shares. Any of these factors, among others, may result in shares trading at a significant premium or discount to net asset value, which will be reflected in the intraday bid/ask spreads and/or the closing price of shares as compared to net asset value. In addition, because liquidity in certain underlying securities may fluctuate, shares may trade at a larger premium or discount to net asset value than shares of other kinds of ETFs. Additionally, in stressed market conditions, the market for shares may become less liquid in response to deteriorating liquidity in the markets for the Portfolio’s underlying holdings. Where all or a portion of the Portfolio’s underlying securities trade in a market that is closed when the market in which the Portfolio’s shares are listed and trading is open, the market price of the Portfolio’s shares and the underlying value of those shares may differ and widen bid‑ask spreads or settlement times.
No Guarantee of Active Trading Market Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	No Guarantee of Active Trading Market Risk. There can be no assurance that an active trading market for Portfolio shares will develop or be maintained. Further, secondary markets may be subject to irregular trading activity, wide bid/ask spreads and extended trade settlement periods in stressed market conditions because market makers and authorized participants may step away from making a market in the shares and in executing creation and redemption orders, which could cause a material deviation in the Portfolio’s market price and its underlying net asset value.
Trading Issues Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Trading Issues Risk. Trading in Portfolio shares may be halted due to market conditions or for reasons that, in the view of the listing exchange, make trading in shares on the listing exchange inadvisable. In addition, trading in shares on the listing exchange is subject to trading halts caused by extraordinary market volatility pursuant to the listing exchange “circuit breaker” rules. In the event of a trading halt or unanticipated early closing of the listing exchange, a shareholder may be unable to purchase or sell shares of the Portfolio. There can be no assurance that the requirements of the listing exchange necessary to maintain the listing of the Portfolio will continue to be met or will remain unchanged.
Market Risks [Member]
Prospectus [Line Items]
Risk [Text Block]	Market Risk. The value of investments in the Portfolio may fluctuate suddenly and unexpectedly as a result of various market and economic factors, including those affecting individual companies, issuers or particular industries.
Risk Lose Money [Member]
Prospectus [Line Items]
Risk [Text Block]	The Portfolio is subject to numerous risks, any of which could cause an investor to lose money.

Investment Risks - International Developed Markets Select Equity ETF

Oct. 31, 2025

Currency Risk. Foreign currencies may experience steady or sudden devaluation relative to the U.S. dollar, adversely affecting the value of the Portfolio’s investments. Because the Portfolio’s net asset value is determined on the basis of U.S. dollars, if the local currency of a foreign market depreciates against the U.S. dollar, you may lose money even if the foreign market prices of the Portfolio’s holdings rise.

Prospectus [Line Items]

Risk [Text Block]

Foreign Investment Risk. Securities issued by foreign entities involve risks not associated with U.S. investments. These risks include additional taxation, political, economic, social, geopolitical or diplomatic instability, and the above-mentioned possibility of changes in foreign currency exchange rates. There may also be less publicly-available information about a foreign issuer. Such risks may be magnified with respect to securities of issuers in frontier emerging markets.

Authorized Participant Concentration Risk [Member]

Prospectus [Line Items]

Risk [Text Block]

Authorized Participant Concentration Risk. The Portfolio may have a limited number of intermediaries that act as authorized participants and none of these authorized participants is or will be obligated to engage in creation or redemption transactions. To the extent that these intermediaries exit the business or are unable to or choose not to proceed with creation and/or redemption orders with respect to the Portfolio and no other authorized participant creates or redeems, Shares may trade at a discount to net asset value and possibly face trading halts and/or delisting. Authorized participant concentration risk may be heightened for ETFs that invest in securities issued by non‑U.S. issuers or other securities or instruments that have lower trading volumes.

Large Shareholder Risk [Member]

Prospectus [Line Items]

Risk [Text Block]

Large Shareholder Risk. Certain shareholders may from time to time own a substantial amount of the Portfolio’s shares. In addition, a third party investor, an Authorized Participant (as defined in the “Creations and Redemptions” section below), a market maker, or another entity may invest in the Portfolio and hold its investment for a limited period of time. There can be no assurance that any large shareholder would not redeem or sell its investment. To the extent effected in cash, redemptions of a large number of Portfolio shares could require the Portfolio to dispose of assets to meet the redemption requests, which can accelerate the realization of taxable income and/or capital gains and cause the Portfolio to make taxable distributions to its shareholders earlier than the Portfolio otherwise would have. In some circumstances, the Portfolio may hold a relatively large proportion of its assets in cash in anticipation of large redemptions (to the extent redemptions are effected in cash), diluting its investment returns. These large redemptions may also force the Portfolio to sell portfolio securities when it might not otherwise do so, which may negatively impact the Portfolio’s performance.

Market Trading Risk [Member]

Prospectus [Line Items]

Risk [Text Block]

Market Trading Risk. The net asset value (“NAV”) of the Portfolio and the value of your investment may fluctuate. Market prices of shares may fluctuate, in some cases significantly, in response to the Portfolio’s NAV, the intraday value of the Portfolio’s holdings and supply and demand for shares. The Portfolio faces numerous market trading risks, including disruptions to creations and redemptions, the existence of extreme market volatility or potential lack of an active trading market for shares. Any of these factors, among others, may result in shares trading at a significant premium or discount to net asset value, which will be reflected in the intraday bid/ask spreads and/or the closing price of shares as compared to net asset value. In addition, because liquidity in certain underlying securities may fluctuate, shares may trade at a larger premium or discount to net asset value than

shares of other kinds of ETFs. Additionally, in stressed market conditions, the market for shares may become less liquid in response to deteriorating liquidity in the markets for the Portfolio’s underlying holdings.

Where all or a portion of the Portfolio’s underlying securities trade in a market that is closed when the market in which the Portfolio’s shares are listed and trading is open, the market price of the Portfolio’s shares and the underlying value of those shares may differ and widen bid‑ask spreads or settlement times.

No Guarantee of Active Trading Market Risk [Member]

Prospectus [Line Items]

Risk [Text Block]

No Guarantee of Active Trading Market Risk. There can be no assurance that an active trading market for Portfolio shares will develop or be maintained. Further, secondary markets may be subject to irregular trading activity, wide bid/ask spreads and extended trade settlement periods in stressed market conditions because market makers and authorized participants may step away from making a market in the shares and in executing creation and redemption orders, which could cause a material deviation in the Portfolio’s market price and its underlying net asset value.

Trading Issues Risk [Member]

Prospectus [Line Items]

Risk [Text Block]

Trading Issues Risk. Trading in Portfolio shares may be halted due to market conditions or for reasons that, in the view of the listing exchange, make trading in shares on the listing exchange inadvisable. In addition, trading in shares on the listing exchange is subject to trading halts caused by extraordinary market volatility pursuant to the listing exchange “circuit breaker” rules. In the event of a trading halt or unanticipated early closing of the listing exchange, a shareholder may be unable to purchase or sell shares of the Portfolio. There can be no assurance that the requirements of the listing exchange necessary to maintain the listing of the Portfolio will continue to be met or will remain unchanged.

Market Risks [Member]

Prospectus [Line Items]

Risk [Text Block]

Market Risk. The value of investments in the Portfolio may fluctuate suddenly and unexpectedly as a result of various market and economic factors, including those affecting individual companies, issuers or particular industries.

Risk Lose Money [Member]

Prospectus [Line Items]

Risk [Text Block]

The Portfolio is subject to numerous risks, any of which could cause an investor to lose money.