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BBH Limited Duration Fund | BBH Limited Duration Fund  
Risk/Return: rr_RiskReturnAbstract  
Risk/Return, Heading rr_RiskReturnHeading

BBH LIMITED DURATION FUND SUMMARY
Investment Objective, Heading rr_ObjectiveHeading

INVESTMENT OBJECTIVE
Investment Objective, Primary rr_ObjectivePrimaryTextBlock

The investment objective of the BBH Limited Duration Fund (the “Fund”) is to provide maximum total return, consistent with preservation of capital and prudent investment management.
Expense, Heading rr_ExpenseHeading

FEES AND EXPENSES OF THE FUND
Expense, Narrative rr_ExpenseNarrativeTextBlock

The table below describes the fees and expenses that you may pay if you buy and hold the Fund's Class N and Class I shares.
Shareholder Fees, Caption rr_ShareholderFeesCaption

Shareholder Fees (Fees paid directly from your investment)
Operating Expenses, Caption rr_OperatingExpensesCaption

Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)
Expense Example, Heading rr_ExpenseExampleHeading

EXAMPLE
Expense Example, Narrative rr_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the Fund's Class N and Class I shares to the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund's Class N and Class I shares 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 operating expenses of the Fund's Class N and Class I shares remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Portfolio Turnover, Heading rr_PortfolioTurnoverHeading

Portfolio Turnover
Portfolio Turnover rr_PortfolioTurnoverTextBlock

The Fund 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 Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example above, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 46% of the average value of its portfolio.
Investment Strategy, Heading rr_StrategyHeading

PRINCIPAL INVESTMENT STRATEGIES
Investment Strategy, Narrative rr_StrategyNarrativeTextBlock

The Fund seeks to achieve its investment objective by investing in a well-diversified portfolio of durable, performing fixed income instruments. These investments will be primarily focused in notes and bonds issued by domestic and foreign corporations and financial institutions and U.S. Government, government agencies and government guaranteed issuers, as well as asset-backed securities. The Fund may purchase mortgage-backed securities, and sovereign debt when the investment adviser believes that the additional returns from these securities justify the risk of allocations to these asset classes.

The Fund may invest in money market instruments, repurchase agreements, commercial paper and derivative instruments, including futures, swaps and options, to meet its investment objective. The Fund will invest primarily in investment grade securities but may invest in securities rated below investment grade when the investment adviser believes that the additional income from these securities justifies the higher risk.
Risk, Heading rr_RiskHeading

PRINCIPAL RISKS OF THE FUND
Risk, Narrative rr_RiskNarrativeTextBlock

The principal risks of investing in the Fund and the circumstances reasonably likely to adversely affect an investment are listed in alphabetical order and described below. The share price of the Fund changes daily, based on market conditions and other factors. A shareholder may lose money by investing in the Fund. There can be no assurance that the Fund will achieve its investment objective.

Credit Risk:

Credit risk refers to the likelihood that an issuer, guarantor, or the counterparty to a derivative contract or repurchase agreement, will default on interest or principal payments. For asset-backed and commercial mortgage-backed securities, there is risk that the impairment of the value of the collateral underlying the security, such as non-payment of loans, will result in default on interest or principal payments. Credit risk is heightened to the extent the Fund invests in below investment grade securities.

Derivatives Risk:

Derivatives are financial contracts whose value depends on, or is derived from, the value of an underlying asset or index. Risks are different from, or possibly greater than, the risks associated with investing directly in securities and other traditional investments. Risks include liquidity risk, interest rate risk, market risk, credit risk, risk of mis-pricing or improper valuation and the risk of miscorrelation. The Fund could lose more than the principal amount invested.

Foreign Investment Risk:

Investing in securities of foreign-based companies 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 foreign investments more volatile and potentially less liquid than U.S. investments.

Interest Rate Risk:

Interest rate risk refers to the price fluctuation of a bond in response to changes in interest rates. Rising interest rates tend to cause the price of debt securities (especially those with longer maturities) and the Fund's share price to fall.

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.

Issuer Risk:

The value of a security may decline for a number of reasons, which directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer's goods or services.

Leveraging Risk:

Leverage includes borrowing and reverse repurchase agreements and in some cases derivative contracts that may result in leverage to the Fund. Leverage risk is created when an investment exposes the Fund to a level of risk that exceeds the amount invested. Leveraging is speculative, tends to exaggerate the effect of any increase or decrease in the value of the Fund's securities and may cause the Fund to be more volatile.

Liquidity Risk:

Liquidity risk exists when a particular instrument is difficult to purchase or sell. Size of a transaction or illiquid markets may be factors.

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.

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.

Maturity Risk:

Interest rate risk, as discussed above, will generally affect the price of a fixed income security more if the security has a longer maturity.

Mortgage-Backed Securities Risk:

Borrowers may default on their mortgage obligations or the guarantees underlying the mortgage-backed securities. In addition, during periods of falling interest rates mortgage-backed securities may be called or prepaid, which may result in the Fund having to reinvest proceeds in other investments at a lower interest rate. A fund holding mortgage-related securities may exhibit additional volatility during periods of fluctuating interest rates.

Prepayment Risk:

The Fund's investments are subject to the risk that in times of declining interest rates, the Fund's higher yielding securities will be prepaid and the Fund will have to replace them with securities having a lower yield.

Shareholder Concentration 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.

Sovereign Debt Risk:

Bonds issued by foreign governments, sometimes referred to as “sovereign” debt, present risks not associated with investments in other types of bonds. The government or agency issuing the debt may be unable or unwilling to make interest payments and/or repay the principal owed. In such instance, the Fund may have limited recourse against the issuing government or agency.
Bar Chart and Performance Table, Heading rr_BarChartAndPerformanceTableHeading

FUND PERFORMANCE
Performance, Narrative rr_PerformanceNarrativeTextBlock

The Fund is a successor to a mutual fund, which was a series of BBH Fund, Inc. (the “Predecessor Fund”). Performance provided reflects the performance of the Predecessor Fund for periods prior to its reorganization into the Fund, as of the close of business on June 12, 2007. Prior to the reorganization, the Fund did not have any investment operations. Accordingly, the performance information provided in this Prospectus for the periods prior to that date is historical information of the Predecessor Fund, adjusted to reflect the Fund's anticipated expenses.

The following bar chart and table give an indication of the risks involved with an investment in the Fund. The bar chart shows changes in the performance of the Fund's Class I shares from year to year. The table shows how the average annual returns of the Fund's Class N and Class I shares for the periods indicated compared to a broad-based market index. One cannot invest directly in an index.

When you consider this information, please remember that the Fund's performance (before and after taxes) in past years is not necessarily an indication of how the Fund will perform in the future. Updated information on the Fund's performance can be obtained by visiting www.bbhfunds.com or can be obtained by phone at 1-800-575-1265.
Bar Chart, Heading rr_BarChartHeading

Total Return for Class I Shares* (% Per Calendar Year)

 [1]
Bar Chart, Closing rr_BarChartClosingTextBlock
Highest Performing Quarter:  4.75% in 4th quarter of 2008 
Lowest Performing Quarter:  (1.04)% in 2nd quarter of 2007 
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel
Highest Performing Quarter:
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Dec. 31, 2008
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 4.75%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel
Lowest Performing Quarter:
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Jun. 30, 2007
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (1.04%)
Performance Table, Heading rr_PerformanceTableHeading

Average Annual Total Returns (Through December 31, 2015)
Performance Table, Narrative rr_PerformanceTableNarrativeTextBlock

The Fund's performance figures assume that all distributions were reinvested in the Fund. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor's tax situation and may differ from those shown. After-tax returns for Class I Shares will differ from those shown for Class N Shares. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
BBH Limited Duration Fund | BBH Limited Duration Fund | Barclays Capital U.S. 1-3 Year Treasury Bond Index  
Risk/Return: rr_RiskReturnAbstract  
Index No Deduction for Fees, Expenses, Taxes rr_IndexNoDeductionForFeesExpensesTaxes
(reflects no deduction for fees, expenses or taxes)
1 Year rr_AverageAnnualReturnYear01 0.56%
5 Years rr_AverageAnnualReturnYear05 0.71%
10 Years rr_AverageAnnualReturnYear10 2.44%
BBH Limited Duration Fund | BBH Limited Duration Fund | Class N Shares  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of Offering Price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (Load) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Maximum Sales Charge (Load) Imposed on Reinvested Dividends rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther none
Redemption Fee (as a percentage of amount redeemed, if applicable) rr_RedemptionFeeOverRedemption none
Exchange Fee rr_ExchangeFeeOverRedemption none
Management fees rr_ManagementFeesOverAssets 0.26%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.22%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.48%
1 Year rr_ExpenseExampleYear01 $ 49
3 Years rr_ExpenseExampleYear03 154
5 Years rr_ExpenseExampleYear05 269
10 Years rr_ExpenseExampleYear10 $ 604
1 Year rr_AverageAnnualReturnYear01 0.09%
5 Years rr_AverageAnnualReturnYear05 1.18%
10 Years rr_AverageAnnualReturnYear10 2.68%
BBH Limited Duration Fund | BBH Limited Duration Fund | Class N Shares | Return After Taxes on Distributions  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 (0.71%)
5 Years rr_AverageAnnualReturnYear05 0.49%
10 Years rr_AverageAnnualReturnYear10 1.67%
BBH Limited Duration Fund | BBH Limited Duration Fund | Class N Shares | Return After Taxes on Distributions and Sale of Fund Shares  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 0.05%
5 Years rr_AverageAnnualReturnYear05 0.63%
10 Years rr_AverageAnnualReturnYear10 1.69%
BBH Limited Duration Fund | BBH Limited Duration Fund | Class I Shares  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of Offering Price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (Load) rr_MaximumDeferredSalesChargeOverOfferingPrice none
Maximum Sales Charge (Load) Imposed on Reinvested Dividends rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther none
Redemption Fee (as a percentage of amount redeemed, if applicable) rr_RedemptionFeeOverRedemption none
Exchange Fee rr_ExchangeFeeOverRedemption none
Management fees rr_ManagementFeesOverAssets 0.26%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.02%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.28%
1 Year rr_ExpenseExampleYear01 $ 29
3 Years rr_ExpenseExampleYear03 90
5 Years rr_ExpenseExampleYear05 157
10 Years rr_ExpenseExampleYear10 $ 355
Annual Return 2006 rr_AnnualReturn2006 3.95%
Annual Return 2007 rr_AnnualReturn2007 3.09%
Annual Return 2008 rr_AnnualReturn2008 4.41%
Annual Return 2009 rr_AnnualReturn2009 5.96%
Annual Return 2010 rr_AnnualReturn2010 4.37%
Annual Return 2011 rr_AnnualReturn2011 0.77%
Annual Return 2012 rr_AnnualReturn2012 3.57%
Annual Return 2013 rr_AnnualReturn2013 1.25%
Annual Return 2014 rr_AnnualReturn2014 0.88%
Annual Return 2015 rr_AnnualReturn2015 0.39%
1 Year rr_AverageAnnualReturnYear01 0.39%
5 Years rr_AverageAnnualReturnYear05 1.36%
10 Years rr_AverageAnnualReturnYear10 2.85%
[1] Historically, the Fund has presented information for its Class N shares in this table. Due to a transition of a majority of the Fund's Shareholders into Class I shares during 2015, the Fund has instead elected to provide information for Class I shares in this year's prospectus. The Fund's Class N shares have a higher overall expense ratio and, as a result, performance would be lower.