Investment Risks |
Oct. 31, 2024 |
|---|---|
| BBH Select Series - Large Cap Fund | Risk Lose Money [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Investors in the Fund could lose money, including the possible loss of the entire principal amount of an investment, over short or long periods of time. |
| BBH Select Series - Large Cap Fund | Risk Nondiversified Status [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Because a non-diversified fund under the federal securities laws may invest in a relatively small number of issuers compared to a diversified fund, changes in the financial condition of individual issuers, as well as political, regulatory or economic occurrences affecting such issuers may cause greater fluctuation in the value of a non-diversified fund’s shares. However, the Fund intends to satisfy the asset diversification requirements for qualification as a regulated investment company (“RIC”) under Subchapter M of the Internal Revenue Code of 1986, as amended (the “Code”). |
| BBH Select Series - Large Cap Fund | Investment Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Investment Risk. Investors in the Fund could lose money, including the possible loss of the entire principal amount of an investment, over short or long periods of time. |
| BBH Select Series - Large Cap Fund | Market Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Market Risk. The price of a security may fall due to changing economic, political, regulatory or market conditions, or due to a company’s or issuer’s individual situation. Natural disasters, the spread of infectious illness and other public health emergencies, recession, terrorism and other unforeseeable events may lead to increased market volatility and may have adverse effects on world economies and markets generally. |
| BBH Select Series - Large Cap Fund | Equity Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Equity Securities Risk. Equity securities risk is the risk that prices of equity securities rise and fall daily due to factors affecting individual companies, particular industries or the equity market as a whole. |
| BBH Select Series - Large Cap Fund | Preferred Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Preferred Securities Risk. The Fund may invest in preferred securities which are equity interests in a company that entitle the holder to receive common stock, dividends and a fixed share of the proceeds resulting from a liquidation of the company, in preference to the holders of other securities. Preferred securities may pay fixed or adjustable rates of return. Preferred securities are subject to issuer-specific and market risks applicable generally to equity securities. In addition, a company’s preferred securities may pay dividends only after the company makes required payments on bonds and other debt. If a company experiences actual or perceived changes in its financial condition or prospects, the value of preferred securities may be more greatly affected than the value of bonds and other debt. |
| BBH Select Series - Large Cap Fund | Large Cap Company Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Large Cap Company Risk. Because the Fund invests in large cap company securities, it may underperform other funds during periods when the Fund’s large cap securities are out of favor. |
| BBH Select Series - Large Cap Fund | ETF Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | ETF Risk. The Fund is an ETF and is subject to the following risks: Trading Issues. Shares of the Fund trade on an exchange at market prices and may trade above (premium) or below (discount) their net asset value (“NAV”). An active trading market for the Fund’s shares may not develop or be maintained. Trading in shares may be halted due to market conditions or for reasons that, in the view of the Exchange, make trading in shares inadvisable, such as extraordinary market volatility. In addition, there can be no assurance that shares will continue to meet the listing requirements of the Exchange. Market Price Variance. The market price of the Fund’s shares will fluctuate in response to changes in NAV and supply and demand for shares and will include a “bid-ask spread” charged by the exchange specialists, market makers, or other participants that trade the particular security. There may be times when the market price and the NAV vary significantly and shares may trade at a premium or discount to NAV. Limited Authorized Participant, Market Makers, and Liquidity Providers. There may be a limited number of market makers and/or liquidity providers in the marketplace and the Fund has a limited number of institutions that may act as authorized participants on an agency basis (i.e., on behalf of other market participants). Only an authorized participant who has entered into an agreement with the Fund’s distributor may engage in creation or redemption transactions directly with the Fund, and none of those authorized participants is obligated to engage in creation and/or redemption transactions. To the extent that authorized participants, market makers, and liquidity providers exit the business or are unable to provide their services with respect to the Fund and no other entities are able to step forward to perform their functions, the Fund’s shares may trade at a premium or discount to NAV and possibly face trading halts or delisting. |
| BBH Select Series - Large Cap Fund | Non-Diversification Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Non-Diversification Risk. Because a non-diversified fund under the federal securities laws may invest in a relatively small number of issuers compared to a diversified fund, changes in the financial condition of individual issuers, as well as political, regulatory or economic occurrences affecting such issuers may cause greater fluctuation in the value of a non-diversified fund’s shares. However, the Fund intends to satisfy the asset diversification requirements for qualification as a regulated investment company (“RIC”) under Subchapter M of the Internal Revenue Code of 1986, as amended (the “Code”). |
| BBH Select Series - Large Cap Fund | Non-U.S. Investment Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Non-U.S. Investment Risk. Investing in securities of companies based outside of the United States, including ADRs, involves risks not typically associated with investing in securities of companies organized and operated in the United States. These risks include adverse political, social and economic developments abroad, different kinds and levels of market and issuer regulations, and the different characteristics of overseas economies and markets. These factors can make non-U.S. investments more volatile and potentially less liquid than U.S. investments. Unsponsored ADRs do not trade on an exchange and therefore may be difficult to sell and investors do not have the benefits and voting rights that are extended to other shareholders. |
| BBH Select Series - Large Cap Fund | Management Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Management Risk. The Fund is actively managed, and its success depends upon the investment skills and analytical abilities of the Investment Adviser to develop and effectively implement strategies that achieve the Fund’s investment objective. Subjective decisions made by the Investment Adviser may cause the Fund to incur losses or to miss profit opportunities on which it may otherwise have capitalized. |
| BBH Select Series - Large Cap Fund | Large Shareholder Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Large Shareholder Risk. Asset allocation decisions, particularly large redemptions, made by an investment adviser whose discretionary clients make up a large percentage of the Fund’s shareholders may adversely impact remaining Fund shareholders. |
| BBH Select Series - Mid Cap Fund | Risk Lose Money [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Investors in the Fund could lose money, including the possible loss of the entire principal amount of an investment, over short or long periods of time. |
| BBH Select Series - Mid Cap Fund | Risk Nondiversified Status [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Because a non-diversified fund under the federal securities laws may invest in a relatively small number of issuers compared to a diversified fund, changes in the financial condition of individual issuers, as well as political, regulatory or economic occurrences affecting such issuers may cause greater fluctuation in the value of a non-diversified fund’s shares. However, the Fund intends to satisfy the asset diversification requirements for qualification as a regulated investment company (“RIC”) under Subchapter M of the Internal Revenue Code of 1986, as amended (the “Code”). |
| BBH Select Series - Mid Cap Fund | Mid Cap Company Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Mid Cap Company Risk. Mid cap companies, when compared to larger companies, may experience lower trade volume and could be subject to greater and less predictable price changes. Mid cap companies may also have limited management experience or depth, limited ability to generate or borrow capital needed for growth, limited products or services, or operate in less established markets. Therefore, mid cap securities may be subject to changing economic, market, and industry conditions and experience more volatility and less liquidity over short periods. |
| BBH Select Series - Mid Cap Fund | Investment Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Investment Risk. Investors in the Fund could lose money, including the possible loss of the entire principal amount of an investment, over short or long periods of time. |
| BBH Select Series - Mid Cap Fund | Market Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Market Risk. The price of a security may fall due to changing economic, political, regulatory or market conditions, or due to a company’s or issuer’s individual situation. Natural disasters, the spread of infectious illness and other public health emergencies, recession, terrorism and other unforeseeable events may lead to increased market volatility and may have adverse effects on world economies and markets generally. |
| BBH Select Series - Mid Cap Fund | Equity Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Equity Securities Risk. Equity securities risk is the risk that prices of equity securities rise and fall daily. Price movements may occur due to factors affecting individual companies, such as the issuance of an unfavorable earnings report, or other events affecting particular industries or the equity market as a whole. |
| BBH Select Series - Mid Cap Fund | Preferred Securities Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Preferred Securities Risk. The Fund may invest in preferred securities, which are equity interests in a company that entitle the holder to receive common stock, dividends and a fixed share of the proceeds resulting from a liquidation of the company, in preference to the holders of other securities. Preferred securities may pay fixed or adjustable rates of return. Preferred securities are subject to issuer-specific and market risks applicable generally to equity securities. In addition, a company’s preferred securities may pay dividends only after the company makes required payments to holders of its bonds and other debt. If a company experiences actual or perceived changes in its financial condition or prospects, the value of preferred securities may be more greatly affected than the value of bonds and other debt. |
| BBH Select Series - Mid Cap Fund | Large Cap Company Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Large Cap Company Risk. Because the Fund invests in large cap company securities, it may underperform other funds during periods when the Fund’s large cap securities are out of favor. |
| BBH Select Series - Mid Cap Fund | Small Cap Company Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Small Cap Company Risk. Small cap companies may have limited product lines or markets. They may be less financially secure than larger, more established companies and may depend on a more limited management group than larger capitalized companies. |
| BBH Select Series - Mid Cap Fund | ETF Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | ETF Risk. The Fund is an ETF and is subject to the following risks: Trading Issues. Shares of the Fund trade on an exchange at market prices and may trade above (premium) or below (discount) their net asset value (“NAV”). An active trading market for the Fund’s shares may not develop or be maintained. Trading in shares may be halted due to market conditions or for reasons that, in the view of the Exchange, make trading in shares inadvisable, such as extraordinary market volatility. In addition, there can be no assurance that shares will continue to meet the listing requirements of the Exchange. Market Price Variance. The market price of the Fund’s shares will fluctuate in response to changes in NAV and supply and demand for shares and will include a “bid-ask spread” charged by the exchange specialists, market makers, or other participants that trade the particular security. There may be times when the market price and the NAV vary significantly and shares may trade at a premium or discount to NAV. Limited Authorized Participant, Market Makers, and Liquidity Providers. There may be a limited number of market makers and/or liquidity providers in the marketplace and the Fund has a limited number of institutions that may act as authorized participants on an agency basis (i.e., on behalf of other market participants). Only an authorized participant who has entered into an agreement with the Fund’s distributor may engage in creation or redemption transactions directly with the Fund, and none of those authorized participants is obligated to engage in creation and/or redemption transactions. To the extent that authorized participants, market makers, and liquidity providers exit the business or are unable to provide their services with respect to the Fund and no other entities are able to step forward to perform their functions, the Fund’s shares may trade at a premium or discount to NAV and possibly face trading halts or delisting. |
| BBH Select Series - Mid Cap Fund | Non-Diversification Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Non-Diversification Risk. Because a non-diversified fund under the federal securities laws may invest in a relatively small number of issuers compared to a diversified fund, changes in the financial condition of individual issuers, as well as political, regulatory or economic occurrences affecting such issuers may cause greater fluctuation in the value of a non-diversified fund’s shares. However, the Fund intends to satisfy the asset diversification requirements for qualification as a regulated investment company (“RIC”) under Subchapter M of the Internal Revenue Code of 1986, as amended (the “Code”). |
| BBH Select Series - Mid Cap Fund | Non-U.S. Investment Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Non-U.S. Investment Risk. Investing in securities of companies based outside of the United States, including ADRs, involves risks not typically associated with investing in securities of companies organized and operated in the United States. These risks include adverse political, social and economic developments abroad, different kinds and levels of market and issuer regulations, and the different characteristics of overseas economies and markets. These factors can make non-U.S. investments more volatile and potentially less liquid than U.S. investments. Additionally, investments in non-U.S. securities may be denominated in currencies, other than the U.S. dollar, which are subject to changes in currency exchange rates. These fluctuations could offset investment gains or add to investment losses. Unsponsored ADRs do not trade on an exchange and therefore may be difficult to sell and investors do not have the benefits and voting rights that are extended to other shareholders. |
| BBH Select Series - Mid Cap Fund | Investments In Other Investment Companies Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Investments In Other Investment Companies Risk. Investments in other investment companies are subject to market and selection risk, as well as the specific risks associated with the investment companies’ portfolio securities. As a shareholder of another investment company, the Fund would bear, along with other shareholders, its pro rata portion of the other investment company’s expenses, including advisory fees. The shares of an investment company that trade on an exchange (for example, an ETF) may trade below their net asset value at a discount, which may adversely affect the Fund’s performance. |
| BBH Select Series - Mid Cap Fund | IPO Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | IPO Risk. IPOs are new issues of equity securities. Securities issued in IPOs have no trading history, and information about the companies may be available for very limited periods. In addition, the prices of securities sold in IPOs may be highly volatile or may decline shortly after the IPO. |
| BBH Select Series - Mid Cap Fund | Management Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Management Risk. The Fund is actively managed, and its success depends upon the investment skills and analytical abilities of the Investment Adviser to develop and effectively implement strategies that achieve the Fund’s investment objective. Subjective decisions made by the Investment Adviser may cause the Fund to incur losses or to miss profit opportunities on which it may otherwise have capitalized. |
| BBH Select Series - Mid Cap Fund | Large Shareholder Risk [Member] | |
| Prospectus [Line Items] | |
| Risk [Text Block] | Large Shareholder Risk. Asset allocation decisions, particularly large redemptions, made by an investment adviser whose discretionary clients make up a large percentage of the Fund’s shareholders may adversely impact remaining Fund shareholders. |