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

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses(expenses that you pay each year as a percentage of the value of your investment)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

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, affect the Fund’s performance.

During the most recent fiscal year, the portfolio turnover rate for the Fund was 33% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

33.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Acquired Fund Fees and Expenses are indirect fees and expenses that the Fund incurs from investing in the shares of other mutual funds, including money market funds and exchange traded funds. Please note that the amount of Total Annual Fund Operating Expenses shown in the above table will differ from the “Financial Highlights” section of the Prospectus, which reflects the operating expenses of the Fund and does not include indirect expenses such as Acquired Fund Fees and Expenses.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

The example below is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. This example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of each period. The example also assumes that your investment has a 5% annual return each year and that the Fund’s operating expenses remain the same.

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal conditions, Brown Advisory LLC (the “Adviser”) seeks to achieve the Fund’s investment objective by investing at least 80% of the value of its net assets (plus any borrowings for investment purposes) in equity securities of domestic companies. The Fund invests primarily in securities of medium and large market capitalization companies that the Adviser believes have exhibited an above average rate of earnings growth and that have prospects for above average, sustainable growth in the future. Medium and large market capitalization companies are, according to the Adviser, those companies with market capitalizations generally greater than $2 billion at the time of purchase. The Fund may also invest in companies that do not exhibit particularly strong earnings histories but have other attributes that may contribute to accelerated growth in the foreseeable future. Equity securities include domestic common and preferred stock, convertible debt securities, American Depositary Receipts (“ADRs”), real estate investment trusts (“REITs”) and exchange traded funds (“ETFs”). The Fund may also invest in private placements in these types of securities. The Fund invests primarily in ETFs that have an investment objective similar to the Fund’s or that otherwise are permitted investments with the Fund’s investment policies described herein. ADRs are equity securities traded on U.S. securities exchanges, which are generally issued by banks or trust companies to evidence ownership of foreign equity securities. The Fund may invest up to 15% of its net assets in foreign securities, including in emerging markets.

The Adviser may sell a security or reduce its position if:

•The investment thesis is violated;

•A more attractively priced security is found; or

•The security becomes overvalued relative to the long-term expectation.

In order to respond to adverse market, economic, political, or other conditions, the Fund may assume a temporary defensive position that is inconsistent with its investment objective and principal investment strategy and invest without limit in cash and prime quality cash equivalents such as prime commercial paper and other money market instruments. A defensive position, taken at the wrong time, may have an adverse impact on the Fund’s performance. The Fund may be unable to achieve its investment objective during the employment of a temporary defensive measure.

Strategy Portfolio Concentration [Text]

rr_StrategyPortfolioConcentration

The Fund may invest up to 15% of its net assets in foreign securities, including in emerging markets.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The following performance information provides some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund’s performance of Investor Shares from year-to-year. The table shows how the average annual returns of the Investor Shares, Advisor Shares and Institutional Shares for 1 year, 5 year, and 10 year periods compare to the Fund's primary broad-based market index and a secondary index provided to offer additional market perspective. In accordance with new regulatory requirements, the Fund has selected the Russell 1000® Index as the Fund’s new primary benchmark. The Fund’s former primary benchmark, the Russell 1000® Growth Index, is also included for comparison.

Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results. Updated performance information is available online at www.brownadvisory.com/mf/growth-equity-fund or by calling 800‑540‑6807 (toll free).

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The following performance information provides some indication of the risks of investing in the Fund.

Performance Additional Market Index [Text]

rr_PerformanceAdditionalMarketIndex

The table shows how the average annual returns of the Investor Shares, Advisor Shares and Institutional Shares for 1 year, 5 year, and 10 year periods compare to the Fund's primary broad-based market index and a secondary index provided to offer additional market perspective.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

800‑540‑6807

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.brownadvisory.com/mf/growth-equity-fund

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results.

Bar Chart [Heading]

rr_BarChartHeading

Brown Advisory Growth Equity Fund – Investor Shares Annual Total Returns

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

The Fund’s calendar year-to-date total return as of September 30, 2024 was 14.73%. During the periods shown in the chart, the highest quarterly return was 26.56% (for the quarter ended June 30, 2020) and the lowest quarterly return was -19.73% (for the quarter ended June 30, 2022).

Year to Date Return, Label

rr_YearToDateReturnLabel

year-to-date total return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2024

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

14.73%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

highest quarterly return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2020

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

26.56%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

lowest quarterly return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Jun. 30, 2022

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(19.73%)

Performance Table Heading

rr_PerformanceTableHeading

Brown Advisory Growth Equity Fund Average Annual Total Returns

Performance Table Market Index Changed

rr_PerformanceTableMarketIndexChanged

In accordance with new regulatory requirements, the Fund has selected the Russell 1000® Index as the Fund’s new primary benchmark. The Fund’s former primary benchmark, the Russell 1000® Growth Index, is also included for comparison.

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

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.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

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.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown for Investor Shares only. After-tax returns for Advisor Shares and Institutional Shares will vary.

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

Brown Advisory Growth Equity Fund | Risk Lose Money [Member]

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

As with all mutual funds, there is the risk that you could lose all or a portion of your investment in the Fund.

Brown Advisory Growth Equity Fund | Risk Not Insured Depository Institution [Member]

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Brown Advisory Growth Equity Fund | American Depositary Receipts (“ADRs”) And Global Depository Receipts (“GDRs”) Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

American Depositary Receipts (“ADRs”) and Global Depository Receipts (“GDRs”) Risk. ADRs and GDRs may be subject to some of the same risks as direct investment in foreign companies, which includes international trade, currency, political, regulatory and diplomatic risks. In a sponsored ADR arrangement, the foreign issuer assumes the obligation to pay some or all of the depositary’s transaction fees. Under an unsponsored ADR arrangement, the foreign issuer assumes no obligations and the depositary’s transaction fees are paid directly by the ADR holders. Because unsponsored ADR arrangements are organized independently and without the cooperation of the issuer of the underlying securities, available information concerning the foreign issuer may not be as current as for sponsored ADRs and voting rights with respect to the deposited securities are not passed through. GDRs can involve currency risk since, unlike ADRs, they may not be U.S. dollar-denominated.

Brown Advisory Growth Equity Fund | Convertible Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Convertible Securities Risk. The value of convertible securities tends to decline as interest rates rise and, because of the conversion feature, tends to vary with fluctuations in the market value of the underlying securities.

Brown Advisory Growth Equity Fund | Emerging Markets Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

reporting and recordkeeping requirements that are as robust as those in more developed countries, and therefore, material information about a company may be unavailable or unreliable, and U.S. regulators may be unable to enforce a company’s regulatory obligations. Emerging markets countries are also subject to potential expropriation or nationalization of private properties and other adverse political, economic and social events. Emerging markets countries are often particularly sensitive to market movements because their market prices tend to reflect speculative expectations. Low trading volumes may result in a lack of liquidity and in extreme price volatility. Investors should be able to tolerate sudden, sometimes substantial, fluctuations in the value of their investments. Emerging market countries may have policies that restrict investment by foreigners or that prevent foreign investors from withdrawing their money at will.

Brown Advisory Growth Equity Fund | Equity And General Market Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Equity and General Market Risk. Common stocks are susceptible to general stock market fluctuations and to volatile increases and decreases in value. The stock market may experience declines or stocks in the Fund’s portfolio may not increase their earnings at the rate anticipated. The Fund’s NAV and investment return will fluctuate based upon changes in the value of its portfolio securities. Markets may, in response to economic, political (including geopolitical), social or market developments, governmental actions or intervention, natural disasters, epidemics, pandemics or other external factors, experience periods of high volatility and reduced liquidity. During those periods, the Fund may experience high levels of shareholder redemptions, and may have to sell securities at times when the Fund would otherwise not do so, potentially at unfavorable prices. Certain securities, particularly fixed income securities, may be difficult to value during such periods.

Brown Advisory Growth Equity Fund | ETF Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

ETF Risk. ETFs may trade at a discount to the aggregate value of the underlying securities and although expense ratios for ETFs are generally low, frequent trading of ETFs by the Fund can generate brokerage expenses. Shareholders of the Fund will indirectly be subject to the fees and expenses of the individual ETFs in which the Fund invests.

Brown Advisory Growth Equity Fund | Foreign Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Foreign Securities Risk. The Fund may invest in foreign securities and is subject to risks associated with foreign markets, such as adverse political, social and economic developments such as war, political instability, hyperinflation, currency devaluations, and overdependence on particular industries; accounting standards or governmental supervision that is not consistent with that to which U.S. companies are subject; limited information about foreign companies; less liquidity and higher volatility in foreign markets and less protection to the shareholders in foreign markets. In addition, investments in certain foreign markets that have historically been considered stable may become more volatile and subject to increased risk due to ongoing developments and changing conditions in such markets. The value of the Fund’s foreign investments may also be affected by foreign tax laws, special U.S. tax considerations and restrictions on receiving the investment proceeds from a foreign country. Dividends or interest on, or proceeds from the sale or disposition of, foreign securities may be subject to non-U.S. withholding or other taxes. Economic sanctions could, among other things, effectively restrict or eliminate the Fund’s ability to purchase or sell securities or groups of securities for a substantial period of time, and may make the Fund’s investments in such securities harder to value.

Brown Advisory Growth Equity Fund | Growth Company Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Growth Company Risk. Securities of growth companies can be more sensitive to the company’s earnings and more volatile than the market in general.

Brown Advisory Growth Equity Fund | Large Capitalization Company Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Large Capitalization Company Risk. Large capitalization companies may be unable to respond quickly to new competitive challenges like changes in consumer tastes or innovative smaller competitors. Also, large capitalization companies are sometimes unable to attain the high growth rates of successful, smaller companies, especially during extended periods of economic expansion.

Brown Advisory Growth Equity Fund | Management Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Management Risk. The Fund may not meet its investment objective based on the Adviser’s success or failure to implement investment strategies for the Fund.

Brown Advisory Growth Equity Fund | Medium Capitalization Company Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Medium Capitalization Company Risk. Securities of medium sized companies may be more volatile and more difficult to liquidate during market down turns than securities of larger companies. Additionally the price of medium-sized companies may decline more in response to selling pressures.

Brown Advisory Growth Equity Fund | Private Placement Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Private Placement Risk. The Fund may invest in privately issued securities of domestic common and preferred stock, convertible debt securities, ADRs and REITs, including those which may be resold only in accordance with Rule 144A under the Securities Act of 1933, as amended. Privately issued securities are restricted securities that are not publicly traded. Delay or difficulty in selling such securities may result in a loss to the Fund.

Brown Advisory Growth Equity Fund | REIT And Real Estate Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

REIT and Real Estate Risk. The value of the Fund’s investments in REITs may change in response to changes in the real estate market such as declines in the value of real estate, lack of available capital or financing opportunities, and increases in property taxes or operating costs. In connection with the Fund’s investments in REITs, the Fund is also subject to risks associated with extended vacancies of properties or defaults by borrowers or tenants, particularly during periods of disruptions to business operations or an economic downturn.

Brown Advisory Growth Equity Fund | Russell 1000® Index (reflects no deduction for fees, expenses and taxes)

Prospectus [Line Items]

rr_ProspectusLineItems

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses and taxes)

Label

rr_AverageAnnualReturnLabel

Russell 1000® Index (reflects no deduction for fees, expenses and taxes)

1 Year

rr_AverageAnnualReturnYear01

26.53%

5 Years

rr_AverageAnnualReturnYear05

15.52%

10 Years

rr_AverageAnnualReturnYear10

11.80%

Brown Advisory Growth Equity Fund | Russell 1000® Growth Index (reflects no deduction for fees, expenses and taxes)

Prospectus [Line Items]

rr_ProspectusLineItems

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses and taxes)

Label

rr_AverageAnnualReturnLabel

Russell 1000® Growth Index (reflects no deduction for fees, expenses and taxes)

1 Year

rr_AverageAnnualReturnYear01

42.68%

5 Years

rr_AverageAnnualReturnYear05

19.50%

10 Years

rr_AverageAnnualReturnYear10

14.86%

Brown Advisory Growth Equity Fund | Institutional Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BAFGX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.59%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

none

Other Expenses

rr_Component2OtherExpensesOverAssets

0.09%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[1]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.69%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 70

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

221

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

384

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 859

Label

rr_AverageAnnualReturnLabel

–Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

33.99%

5 Years

rr_AverageAnnualReturnYear05

14.58%

10 Years

rr_AverageAnnualReturnYear10

11.62%

Brown Advisory Growth Equity Fund | Investor Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BIAGX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.59%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.15%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.09%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[1]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.84%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 86

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

268

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

466

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,037

Annual Return 2014

rr_AnnualReturn2014

6.18%

Annual Return 2015

rr_AnnualReturn2015

6.88%

Annual Return 2016

rr_AnnualReturn2016

(3.02%)

Annual Return 2017

rr_AnnualReturn2017

30.43%

Annual Return 2018

rr_AnnualReturn2018

5.01%

Annual Return 2019

rr_AnnualReturn2019

40.48%

Annual Return 2020

rr_AnnualReturn2020

32.37%

Annual Return 2021

rr_AnnualReturn2021

18.89%

Annual Return 2022

rr_AnnualReturn2022

(33.68%)

Annual Return 2023

rr_AnnualReturn2023

33.77%

Label

rr_AverageAnnualReturnLabel

–Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

33.77%

5 Years

rr_AverageAnnualReturnYear05

14.42%

10 Years

rr_AverageAnnualReturnYear10

11.45%

Brown Advisory Growth Equity Fund | Investor Shares | After Taxes on Distributions

Prospectus [Line Items]

rr_ProspectusLineItems

Label

rr_AverageAnnualReturnLabel

–Return After Taxes on Distributions

1 Year

rr_AverageAnnualReturnYear01

31.69%

5 Years

rr_AverageAnnualReturnYear05

12.52%

10 Years

rr_AverageAnnualReturnYear10

9.56%

Brown Advisory Growth Equity Fund | Investor Shares | After Taxes on Distributions and Sales

Prospectus [Line Items]

rr_ProspectusLineItems

Label

rr_AverageAnnualReturnLabel

–Return After Taxes on Distributions and Sale of Fund Shares

1 Year

rr_AverageAnnualReturnYear01

21.40%

5 Years

rr_AverageAnnualReturnYear05

11.50%

10 Years

rr_AverageAnnualReturnYear10

9.02%

Brown Advisory Growth Equity Fund | Advisor Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BAGAX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.59%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.15%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.09%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[1]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

1.09%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 111

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

347

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

601

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,329

Label

rr_AverageAnnualReturnLabel

–Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

33.41%

5 Years

rr_AverageAnnualReturnYear05

14.13%

10 Years

rr_AverageAnnualReturnYear10

11.17%

Brown Advisory Flexible Equity Fund

Prospectus [Line Items]

rr_ProspectusLineItems

Risk/Return [Heading]

rr_RiskReturnHeading

Brown Advisory Flexible Equity Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Brown Advisory Flexible Equity Fund (the “Fund”) seeks to achieve long-term growth of capital.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses(expenses that you pay each year as a percentage of the value of your investment)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

15.00%

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal conditions, Brown Advisory LLC (the “Adviser”) seeks to achieve the Fund’s investment objective by investing at least 80% of the value of its net assets (plus any borrowings for investment purposes) in a diversified portfolio of equity securities. The Fund invests primarily in securities of medium and large market capitalization companies that the Adviser believes have strong, or improving, long-term business characteristics and share prices that do not reflect these favorable fundamental attributes. Medium and large market capitalization companies are, according to the Adviser, those companies with market capitalizations generally greater than $2 billion at the time of purchase. Equity securities include domestic and foreign common and preferred stock, convertible debt securities, American Depositary Receipts (“ADRs”), real estate investment trusts (“REITs”), exchange traded funds (“ETFs”), and other types of investment companies. The Fund may also invest in private placements in these types of securities. The Fund may invest in ETFs and other types of investment companies that have an investment objective similar to the Fund’s or that otherwise are permitted investments with the Fund’s investment policies described herein. ADRs are equity securities traded on U.S. securities exchanges, which are generally issued by banks or trust companies to evidence ownership of foreign equity securities. The Fund may invest up to 15% of its net assets in foreign securities, including emerging markets.

The Adviser follows an investment philosophy referred to as “flexible equity.” Flexibility allows the Adviser to look at many types of opportunities expanding the bargain hunting concepts of value investing to a broad range of opportunities. The Adviser emphasizes individual security selection based on identifying long-term attractive businesses, i.e., those with significant desirable traits and few or no undesirable traits, when they are available at bargain prices. Desirable traits include favorable business economics supported by enduring competitive advantages, capable and trustworthy management, positive industry dynamics and sensible capital allocation. Bargain prices most often arise in the stock market due to short-term investor perceptions or temporary business challenges creating undue price declines and price recovery potential, or unrecognized favorable prospects within a business or changes for the better in company management or industry conditions.

With respect to 20% of its assets, the Fund may invest in investment grade securities or unrated securities determined by the Adviser to be of comparable quality.

The sale of a company’s equity securities may arise if the securities’ market price exceeds the Adviser’s estimate of intrinsic value, if the ratio of risk and rewards of continuing to own the company’s equity is no longer attractive, or if the Adviser needs to raise cash to purchase a more attractive investment opportunity, satisfy net redemptions, or other purposes.

Strategy Portfolio Concentration [Text]

rr_StrategyPortfolioConcentration

With respect to 20% of its assets, the Fund may invest in investment grade securities or unrated securities determined by the Adviser to be of comparable quality.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results. Updated performance information is available online at www.brownadvisory.com/mf/flexible-equity-fund or by calling 800‑540‑6807 (toll free).

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The following performance information provides some indication of the risks of investing in the Fund.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

800‑540‑6807

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.brownadvisory.com/mf/flexible-equity-fund

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results.

Bar Chart [Heading]

rr_BarChartHeading

Brown Advisory Flexible Equity Fund – Investor Shares Annual Total Returns

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

The Fund’s calendar year-to-date total return as of September 30, 2024 was 20.62%. During the periods shown in the chart, the highest quarterly return was 23.97% (for the quarter ended June 30, 2020) and the lowest quarterly return was -21.28% (for the quarter ended March 31, 2020).

Year to Date Return, Label

rr_YearToDateReturnLabel

year-to-date total return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2024

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

20.62%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

highest quarterly return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2020

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

23.97%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

lowest quarterly return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Mar. 31, 2020

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(21.28%)

Performance Table Heading

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Brown Advisory Flexible Equity Fund Average Annual Total Returns

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

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.

Performance Table Not Relevant to Tax Deferred

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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.

Performance Table One Class of after Tax Shown [Text]

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After-tax returns are shown for Investor Shares only. After-tax returns for Advisor Shares and Institutional Shares will vary.

Performance Table Closing [Text Block]

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Brown Advisory Flexible Equity Fund | Risk Lose Money [Member]

Prospectus [Line Items]

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Risk [Text Block]

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As with all mutual funds, there is the risk that you could lose all or a portion of your investment in the Fund.

Brown Advisory Flexible Equity Fund | Risk Not Insured Depository Institution [Member]

Prospectus [Line Items]

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Risk [Text Block]

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An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Brown Advisory Flexible Equity Fund | American Depositary Receipts (“ADRs”) And Global Depository Receipts (“GDRs”) Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory Flexible Equity Fund | Convertible Securities Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory Flexible Equity Fund | Debt/Fixed Income Securities Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Debt/Fixed Income Securities Risk. An increase in interest rates typically causes a fall in the value of the debt securities in which the Fund may invest. Conversely, a decrease in interest rates typically causes an increase in the value of debt securities in which the Fund may invest. The value of your investment in the Fund may change in response to changes in the credit ratings of the Fund’s portfolio of debt securities. Moreover, rising interest rates or lack of market participants may lead to decreased liquidity in the bond and loan markets, making it more difficult for the Fund to sell its holdings at a time when the Fund’s manager might wish to sell. Lower rated securities (“junk bonds”) are generally subject to greater risk of loss of your money than higher rated securities. Issuers may (increase) decrease prepayments of principal when interest rates (fall) increase, affecting the maturity of the debt security and causing the value of the security to decline.

Brown Advisory Flexible Equity Fund | Emerging Markets Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Emerging Markets Risk. The Fund may invest in emerging markets, which may carry more risk than investing in developed foreign markets. Risks associated with investing in emerging markets include limited information about companies in these countries, greater political and economic uncertainties compared to developed foreign markets, underdeveloped securities markets and legal systems, potentially high inflation rates, and the influence of foreign governments over the private sector. In addition, companies in emerging market countries may not be subject to accounting, auditing, financial reporting and recordkeeping requirements that are as robust as those in more developed countries, and therefore, material information about a company may be unavailable or unreliable, and U.S. regulators may be unable to enforce a company’s regulatory obligations. Emerging markets countries are also subject to potential expropriation or nationalization of private properties and other adverse political, economic and social events. Emerging markets countries are often particularly sensitive to market movements because their market prices tend to reflect speculative expectations. Low trading volumes may result in a lack of liquidity and in extreme price volatility. Investors should be able to tolerate sudden, sometimes substantial, fluctuations in the value of their investments. Emerging market countries may have policies that restrict investment by foreigners or that prevent foreign investors from withdrawing their money at will.

Brown Advisory Flexible Equity Fund | Equity And General Market Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory Flexible Equity Fund | ETF Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory Flexible Equity Fund | Foreign Securities Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory Flexible Equity Fund | Investments in Other Investment Companies Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory Flexible Equity Fund | Large Capitalization Company Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory Flexible Equity Fund | Management Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Management Risk. The Fund may not meet its investment objective based on the Adviser’s success or failure to implement investment strategies for the Fund.

Brown Advisory Flexible Equity Fund | Medium Capitalization Company Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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•Medium Capitalization Company Risk. Securities of medium sized companies may be more volatile and more difficult to liquidate during market down turns than securities of larger companies. Additionally the price of medium-sized companies may decline more in response to selling pressures.

Brown Advisory Flexible Equity Fund | Non-Investment Grade ("Junk Bond") Securities Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Non-Investment Grade ("Junk Bond") Securities Risk. Below investment grade debt securities (also known as “junk bonds”) are speculative and involve a greater risk of default and price change due to changes in the issuer’s creditworthiness. Junk bonds generally present additional risks compared to investment grade bonds and are typically less liquid, and therefore more difficult to value accurately or sell at an advantageous price or time and present more credit risk than investment grade securities. The market prices of these debt securities may fluctuate more than the market prices of investment grade debt securities and may decline significantly in periods of general economic difficulty.

Brown Advisory Flexible Equity Fund | Private Placement Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory Flexible Equity Fund | REIT And Real Estate Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory Flexible Equity Fund | Smaller Capitalization Company Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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•Smaller Capitalization Company Risk. Securities of smaller sized companies may be more volatile and more difficult to liquidate during market down turns than securities of larger companies. Additionally the price of smaller companies may decline more in response to selling pressures.

Brown Advisory Flexible Equity Fund | Value Company Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Value Company Risk. The stock of value companies can continue to be undervalued for long periods of time and not realize its expected value. The value of the Fund may decrease in response to the activities and financial prospects of an individual company.

Brown Advisory Flexible Equity Fund | S&P 500® Index (reflects no deduction for fees, expenses and taxes)

Prospectus [Line Items]

rr_ProspectusLineItems

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses and taxes)

Label

rr_AverageAnnualReturnLabel

S&P 500® Index (reflects no deduction for fees, expenses and taxes)

1 Year

rr_AverageAnnualReturnYear01

26.29%

5 Years

rr_AverageAnnualReturnYear05

15.69%

10 Years

rr_AverageAnnualReturnYear10

12.03%

Brown Advisory Flexible Equity Fund | Institutional Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BAFFX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.43%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

none

Other Expenses

rr_Component2OtherExpensesOverAssets

0.10%

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.53%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 54

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

170

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

296

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 665

Label

rr_AverageAnnualReturnLabel

– Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

34.68%

5 Years

rr_AverageAnnualReturnYear05

16.90%

10 Years

rr_AverageAnnualReturnYear10

12.10%

Brown Advisory Flexible Equity Fund | Investor Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BIAFX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.43%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.15%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.10%

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.68%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 69

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

218

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

379

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 847

Annual Return 2014

rr_AnnualReturn2014

12.73%

Annual Return 2015

rr_AnnualReturn2015

(2.95%)

Annual Return 2016

rr_AnnualReturn2016

9.37%

Annual Return 2017

rr_AnnualReturn2017

24.12%

Annual Return 2018

rr_AnnualReturn2018

(4.07%)

Annual Return 2019

rr_AnnualReturn2019

36.33%

Annual Return 2020

rr_AnnualReturn2020

19.85%

Annual Return 2021

rr_AnnualReturn2021

24.99%

Annual Return 2022

rr_AnnualReturn2022

(21.09%)

Annual Return 2023

rr_AnnualReturn2023

34.47%

Label

rr_AverageAnnualReturnLabel

– Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

34.47%

5 Years

rr_AverageAnnualReturnYear05

16.73%

10 Years

rr_AverageAnnualReturnYear10

11.93%

Brown Advisory Flexible Equity Fund | Investor Shares | After Taxes on Distributions

Prospectus [Line Items]

rr_ProspectusLineItems

Label

rr_AverageAnnualReturnLabel

– Return After Taxes on Distributions

1 Year

rr_AverageAnnualReturnYear01

33.63%

5 Years

rr_AverageAnnualReturnYear05

15.75%

10 Years

rr_AverageAnnualReturnYear10

11.31%

Brown Advisory Flexible Equity Fund | Investor Shares | After Taxes on Distributions and Sales

Prospectus [Line Items]

rr_ProspectusLineItems

Label

rr_AverageAnnualReturnLabel

– Return After Taxes on Distributions and Sale of Fund Shares

1 Year

rr_AverageAnnualReturnYear01

20.99%

5 Years

rr_AverageAnnualReturnYear05

13.38%

10 Years

rr_AverageAnnualReturnYear10

9.82%

Brown Advisory Flexible Equity Fund | Advisor Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BAFAX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.43%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.15%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.10%

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.93%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 95

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

296

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

515

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,143

Label

rr_AverageAnnualReturnLabel

– Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

34.16%

5 Years

rr_AverageAnnualReturnYear05

16.45%

10 Years

rr_AverageAnnualReturnYear10

11.65%

Brown Advisory Sustainable Growth Fund

Prospectus [Line Items]

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Risk/Return [Heading]

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Brown Advisory Sustainable Growth Fund

Objective [Heading]

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Investment Objective

Objective, Primary [Text Block]

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The Brown Advisory Sustainable Growth Fund (the “Fund”) seeks to achieve capital appreciation.

Expense [Heading]

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Fees and Expenses

Expense Narrative [Text Block]

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Shareholder Fees Caption [Text]

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Shareholder Fees(fees paid directly from your investment)

Operating Expenses Caption [Text]

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Annual Fund Operating Expenses(expenses that you pay each year as a percentage of the value of your investment)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

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performance. During the most recent fiscal year, the portfolio turnover rate for the Fund was 35% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

35.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

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Expense Example [Heading]

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Example

Expense Example Narrative [Text Block]

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Expense Example by, Year, Caption [Text]

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Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

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Principal Investment Strategies

Strategy Narrative [Text Block]

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The Brown Advisory Sustainable Growth Fund seeks to achieve capital appreciation. To achieve its objective, the Fund invests at least 80% of the value of its net assets (plus any borrowings for investment purposes) in equity securities of domestic companies that meet the sustainable investment criteria of the Fund, collectively the “Investment Criteria.” The Fund invests primarily in the securities of medium and large capitalization companies that Brown Advisory LLC (the “Adviser”) believes (1) have the fundamental strengths (strong financials and business models) to outperform their peers and deliver strong earnings growth over a market cycle, (2) effectively implement Sustainable Business Advantages (described below), and (3) have attractive valuations.

The Adviser seeks companies with strong business models and prospects for growth, strong cash flow generation, and a solid track record of execution, among other qualities. Through investment analysis the Adviser also seeks companies with Sustainable Business Advantages, defined as companies that use internal sustainability strategies to improve their financial position, including but not limited to, those strategies that lead to revenue growth, cost improvements, or enhanced franchise value. The Adviser also seeks companies that have strong risk management practices in place where sustainability-related risks may be present.

Additionally, while driving impact is not an input to the investment thesis, the Adviser often finds an overlap between Sustainable Business Advantage with positive sustainability outcomes.

The Adviser pursues strategic engagement with companies and other stakeholders in an effort to enhance due diligence and monitor the investment thesis.

The Adviser considers each proxy voting proposal related to holdings in the Fund on its own merits and an independent determination is made based on the relevant facts and circumstances, in accordance with the Adviser’s current Proxy Voting Policy.

Medium and large capitalization companies are, according to the Adviser, those companies with market capitalizations generally greater than $2 billion at time of purchase. The Fund may also invest a portion of the portfolio in equity securities of small market capitalization companies. The equity securities in which the Fund principally invests are common stocks. Furthermore, the Fund may invest up to 15% of assets in foreign securities (including American Depositary Receipts (“ADRs”)), which may include emerging markets securities. ADRs may be either sponsored or unsponsored. The Fund also may invest in real estate investment trusts (“REITs”).

The Adviser uses scenario analyses to assess the company’s valuation and potential for appreciation or downside risk.

The Adviser may sell a security or reduce its position for a number of reasons, including:

•The investment thesis is violated;

•A more attractively priced security is found; or

•The security becomes overvalued relative to the Adviser’s long-term expectations.

Strategy Portfolio Concentration [Text]

rr_StrategyPortfolioConcentration

Furthermore, the Fund may invest up to 15% of assets in foreign securities (including American Depositary Receipts (“ADRs”)), which may include emerging markets securities. ADRs may be either sponsored or unsponsored. The Fund also may invest in real estate investment trusts (“REITs”).

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Bar Chart and Performance Table [Heading]

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Performance Information

Performance Narrative [Text Block]

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The following performance information provides some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund’s performance of Investor Shares from year-to-year. The table shows how the average annual returns of the Investor Shares, Advisor Shares and Institutional Shares for the 1 year, 5 year, and 10 year periods compare to the Fund's primary broad-based market index and a secondary index provided to offer additional market perspective. In accordance with new regulatory requirements, the Fund has selected the Russell 1000® Index as the Fund’s new primary benchmark. The Fund’s former primary benchmark, the Russell 1000® Growth Index, is also included for comparison.

Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results. Updated performance information is available online at www.brownadvisory.com/mf/sustainable-growth-fund or by calling 800‑540‑6807 (toll free).

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The following performance information provides some indication of the risks of investing in the Fund.

Performance Additional Market Index [Text]

rr_PerformanceAdditionalMarketIndex

The table shows how the average annual returns of the Investor Shares, Advisor Shares and Institutional Shares for the 1 year, 5 year, and 10 year periods compare to the Fund's primary broad-based market index and a secondary index provided to offer additional market perspective.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

800‑540‑6807

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.brownadvisory.com/mf/sustainable-growth-fund

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results.

Bar Chart [Heading]

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Brown Advisory Sustainable Growth Fund – Investor Shares Annual Total Returns

Bar Chart Closing [Text Block]

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The Fund’s calendar year-to-date total return as of September 30, 2024 was 16.87%. During the period shown in the chart, the highest quarterly return was 28.71% (for the quarter ended June 30, 2020) and the lowest quarterly return was -18.85% (for the quarter ended June 30, 2022).

Year to Date Return, Label

rr_YearToDateReturnLabel

year-to-date total return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2024

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

16.87%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

highest quarterly return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2020

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

28.71%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

lowest quarterly return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Jun. 30, 2022

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(18.85%)

Performance Table Heading

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Brown Advisory Sustainable Growth Fund Average Annual Total Returns

Performance Table Market Index Changed

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Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

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.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

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.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown for Investor Shares only. After-tax returns for Advisor Shares and Institutional Shares will vary.

Performance Table Closing [Text Block]

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Brown Advisory Sustainable Growth Fund | Risk Lose Money [Member]

Prospectus [Line Items]

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Risk [Text Block]

rr_RiskTextBlock

As with all mutual funds, there is the risk that you could lose all or a portion of your investment in the Fund.

Brown Advisory Sustainable Growth Fund | Risk Not Insured Depository Institution [Member]

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

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An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Brown Advisory Sustainable Growth Fund | American Depositary Receipts (“ADRs”) And Global Depository Receipts (“GDRs”) Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory Sustainable Growth Fund | Emerging Markets Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable Growth Fund | Equity And General Market Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable Growth Fund | Foreign Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable Growth Fund | Growth Company Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

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•Growth Company Risk. Securities of growth companies can be more sensitive to the company’s earnings and more volatile than the market in general.

Brown Advisory Sustainable Growth Fund | Large Capitalization Company Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable Growth Fund | Management Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Management Risk. The Fund may not meet its investment objective based on the Adviser’s success or failure to implement investment strategies for the Fund.

Brown Advisory Sustainable Growth Fund | REIT And Real Estate Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable Growth Fund | Smaller And Medium Capitalization Company Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

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Smaller and Medium Capitalization Company Risk. Securities of smaller and medium sized companies may be more volatile and more difficult to liquidate during market down turns than securities of larger companies. Additionally the price of smaller companies may decline more in response to selling pressures.

Brown Advisory Sustainable Growth Fund | Sustainable Investing Policy Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Sustainable Investing Policy Risk. The Fund’s consideration of sustainability criteria could cause it to make or avoid investments that could result in the Fund underperforming similar funds that do not consider such sustainability criteria.

Brown Advisory Sustainable Growth Fund | Russell 1000® Index (reflects no deduction for fees, expenses and taxes)

Prospectus [Line Items]

rr_ProspectusLineItems

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses and taxes)

Label

rr_AverageAnnualReturnLabel

Russell 1000® Index (reflects no deduction for fees, expenses and taxes)

1 Year

rr_AverageAnnualReturnYear01

26.53%

5 Years

rr_AverageAnnualReturnYear05

15.52%

Since Inception

rr_AverageAnnualReturnSinceInception

11.80%

Brown Advisory Sustainable Growth Fund | Russell 1000® Growth Index (reflects no deduction for fees, expenses and taxes)

Prospectus [Line Items]

rr_ProspectusLineItems

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses and taxes)

Label

rr_AverageAnnualReturnLabel

Russell 1000® Growth Index (reflects no deduction for fees, expenses and taxes)

1 Year

rr_AverageAnnualReturnYear01

42.68%

5 Years

rr_AverageAnnualReturnYear05

19.50%

Since Inception

rr_AverageAnnualReturnSinceInception

14.86%

Brown Advisory Sustainable Growth Fund | Institutional Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BAFWX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.51%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

none

Other Expenses

rr_Component2OtherExpensesOverAssets

0.09%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[2]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.61%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 62

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

195

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

340

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 762

Label

rr_AverageAnnualReturnLabel

–Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

39.07%

5 Years

rr_AverageAnnualReturnYear05

18.61%

Since Inception

rr_AverageAnnualReturnSinceInception

14.87%

Brown Advisory Sustainable Growth Fund | Investor Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BIAWX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.51%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.15%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.09%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[2]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.76%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 78

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

243

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

422

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 942

Annual Return 2014

rr_AnnualReturn2014

6.24%

Annual Return 2015

rr_AnnualReturn2015

12.86%

Annual Return 2016

rr_AnnualReturn2016

5.52%

Annual Return 2017

rr_AnnualReturn2017

27.90%

Annual Return 2018

rr_AnnualReturn2018

4.45%

Annual Return 2019

rr_AnnualReturn2019

34.88%

Annual Return 2020

rr_AnnualReturn2020

38.88%

Annual Return 2021

rr_AnnualReturn2021

29.88%

Annual Return 2022

rr_AnnualReturn2022

(31.02%)

Annual Return 2023

rr_AnnualReturn2023

38.88%

Label

rr_AverageAnnualReturnLabel

–Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

38.88%

5 Years

rr_AverageAnnualReturnYear05

18.44%

Since Inception

rr_AverageAnnualReturnSinceInception

14.70%

Brown Advisory Sustainable Growth Fund | Investor Shares | After Taxes on Distributions

Prospectus [Line Items]

rr_ProspectusLineItems

Label

rr_AverageAnnualReturnLabel

–Return After Taxes on Distributions

1 Year

rr_AverageAnnualReturnYear01

38.88%

5 Years

rr_AverageAnnualReturnYear05

18.29%

Since Inception

rr_AverageAnnualReturnSinceInception

14.26%

Brown Advisory Sustainable Growth Fund | Investor Shares | After Taxes on Distributions and Sales

Prospectus [Line Items]

rr_ProspectusLineItems

Label

rr_AverageAnnualReturnLabel

–Return After Taxes on Distributions and Sale of Fund Shares

1 Year

rr_AverageAnnualReturnYear01

23.01%

5 Years

rr_AverageAnnualReturnYear05

15.01%

Since Inception

rr_AverageAnnualReturnSinceInception

12.25%

Brown Advisory Sustainable Growth Fund | Advisor Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BAWAX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.51%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.15%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.09%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[2]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

1.01%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 103

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

322

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

558

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,236

Label

rr_AverageAnnualReturnLabel

–Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

38.52%

5 Years

rr_AverageAnnualReturnYear05

18.14%

Since Inception

rr_AverageAnnualReturnSinceInception

14.41%

Brown Advisory Mid-Cap Growth Fund

Prospectus [Line Items]

rr_ProspectusLineItems

Risk/Return [Heading]

rr_RiskReturnHeading

Brown Advisory Mid-Cap Growth Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Brown Advisory Mid-Cap Growth Fund (the “Fund”) seeks to achieve long-term capital appreciation.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses(expenses that you pay each year as a percentage of the value of your investment)

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

October 31, 2025

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

63.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal conditions, the Adviser seeks to achieve the Fund’s investment objective by investing at least 80% of the value of its net assets (plus any borrowings for investment purposes) in equity securities of mid-cap domestic companies. The Adviser considers mid-cap companies to be those with market capitalizations that fall within the range of the market capitalizations of companies in the Russell Midcap® Growth Index. As of September 30, 2024, the range was from $1.8 billion to $83.3 billion dollars. Market capitalization is measured at the time of purchase. The Fund invests primarily in companies the Adviser believes have above average growth prospects.

The Adviser conducts an in-depth analysis of a company’s fundamentals to identify those companies it believes have the potential to compound earnings at an above-average rate for an extended period of time. The Fund invests primarily in companies the Adviser believes possess “3G” criteria: durable growth, sound governance, and scalable go-to-market strategies. In considering durable growth, the Adviser assesses whether there is a large and growing market, whether the company is a market leader and/or is gaining market share, and whether a company has a differentiated product offering. The Adviser examines a company’s governance characteristics including the strength of management, whether there is a shareholder-friendly board, and whether there is an aligned incentive system between management and shareholders. Finally, the Adviser evaluates whether a company’s go-to-market strategies will result in incremental revenue, high and/or rising margins, and the efficient use of capital.

Equity securities include domestic common and preferred stock, convertible debt securities, American Depositary Receipts (“ADRs”), real estate investment trusts (“REITs”), exchange traded funds (“ETFs”), and other types of investment companies. The Fund may also invest in private placements in these types of securities. The Fund may invest in ETFs and other types of investment companies that have an investment objective similar to the Fund’s or that otherwise are permitted investments with the Fund’s investment policies described herein. ADRs are equity securities traded on U.S. securities exchanges, which are generally issued by banks or trust companies to evidence ownership of foreign equity securities. The Fund may invest up to 20% of its net assets in foreign securities.

The Adviser may sell a security or reduce its position if it believes:

•The security subsequently fails to meet initial investment criteria;

•A more attractively priced security is found; or

•The security becomes overvalued relative to the long-term expectation.

Strategy Portfolio Concentration [Text]

rr_StrategyPortfolioConcentration

The Fund may invest up to 20% of its net assets in foreign securities.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The following performance information provides some indication of the risks of investing in the Fund. The chart shows changes in the Fund’s performance of Investor Shares from year-to-year. The table shows how the average annual returns of Investor Shares and Institutional Shares for the 1 year, 5 year, and since inception periods compare to the Fund's primary broad-based market index and a secondary index provided to offer additional market perspective. In accordance with new regulatory requirements, the Fund has selected the Russell 1000® Index as the Fund’s new primary benchmark. The Fund’s former primary benchmark, the Russell Midcap Growth Index, is also included for comparison.

Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results. Updated performance information is available online at www.brownadvisory.com/mf/mid-cap-growth-fund or by calling 800‑540‑6807 (toll free).

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The following performance information provides some indication of the risks of investing in the Fund.

Performance Additional Market Index [Text]

rr_PerformanceAdditionalMarketIndex

The table shows how the average annual returns of Investor Shares and Institutional Shares for the 1 year, 5 year, and since inception periods compare to the Fund's primary broad-based market index and a secondary index provided to offer additional market perspective.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

800‑540‑6807

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.brownadvisory.com/mf/mid-cap-growth-fund

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results.

Bar Chart [Heading]

rr_BarChartHeading

Brown Advisory Mid-Cap Growth Fund – Investor Shares Annual Total Returns

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

The Fund’s calendar year-to-date total return as of September 30, 2024 was 11.44%. During the period shown in the chart, the highest quarterly return was 29.58% (for the quarter ended June 30, 2020) and the lowest quarterly return was -22.60% (for the quarter ended March 31, 2020).

Year to Date Return, Label

rr_YearToDateReturnLabel

year-to-date total return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2024

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

11.44%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

highest quarterly return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2020

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

29.58%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

lowest quarterly return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Mar. 31, 2020

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(22.60%)

Performance Table Heading

rr_PerformanceTableHeading

Brown Advisory Mid-Cap Growth Fund Average Annual Total Returns

Performance Table Market Index Changed

rr_PerformanceTableMarketIndexChanged

In accordance with new regulatory requirements, the Fund has selected the Russell 1000® Index as the Fund’s new primary benchmark. The Fund’s former primary benchmark, the Russell Midcap Growth Index, is also included for comparison.

Performance Table Footnotes, Reason Performance Information for Class Different from Immediately Preceding Period [Text]

rr_PerformanceTableFootnotesReasonPerformanceInformationForClassDifferentFromImmediatelyPrecedingPeriod

Performance shown prior to inception of the Institutional Shares is based on the performance of Investor Shares, adjusted for the lower expenses applicable to Institutional Shares.

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

NOTE: The Mid-Cap Growth Fund offers two classes of shares. Investor Shares commenced operations on October 2, 2017, and Institutional Shares commenced operations on July 2, 2018. Performance shown prior to inception of the Institutional Shares is based on the performance of Investor Shares, adjusted for the lower expenses applicable to Institutional Shares.

Brown Advisory Mid-Cap Growth Fund | Risk Lose Money [Member]

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

As with all mutual funds, there is the risk that you could lose all or a portion of your investment in the Fund.

Brown Advisory Mid-Cap Growth Fund | Risk Not Insured Depository Institution [Member]

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Brown Advisory Mid-Cap Growth Fund | American Depositary Receipts (“ADRs”) And Global Depository Receipts (“GDRs”) Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Mid-Cap Growth Fund | Convertible Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Mid-Cap Growth Fund | Equity And General Market Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Mid-Cap Growth Fund | ETF Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Mid-Cap Growth Fund | Foreign Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Mid-Cap Growth Fund | Growth Company Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Growth Company Risk. Securities of growth companies can be more sensitive to the company’s earnings and more volatile than the market in general.

Brown Advisory Mid-Cap Growth Fund | Investments in Other Investment Companies Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Mid-Cap Growth Fund | Liquidity Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Liquidity Risk. Certain securities held by the Fund may be difficult (or impossible) to sell at the time and at the price the Adviser would like. As a result, the Fund may have to hold these securities longer than it would like and may forego other investment opportunities. There is the possibility that the Fund may lose money or be prevented from realizing capital gains if it cannot sell a security at a particular time and price.

Brown Advisory Mid-Cap Growth Fund | Management Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Management Risk. The Fund may not meet its investment objective based on the Adviser’s success or failure to implement investment strategies for the Fund.

Brown Advisory Mid-Cap Growth Fund | Medium Capitalization Company Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Medium Capitalization Company Risk. Securities of medium capitalization companies may be more volatile and more difficult to liquidate during market down turns than securities of larger companies. Additionally the price of medium-sized companies may decline more in response to selling pressures.

Brown Advisory Mid-Cap Growth Fund | Private Placement Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Mid-Cap Growth Fund | REIT And Real Estate Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Mid-Cap Growth Fund | Russell 1000® Index (reflects no deduction for fees, expenses and taxes)

Prospectus [Line Items]

rr_ProspectusLineItems

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses and taxes)

Label

rr_AverageAnnualReturnLabel

Russell 1000® Index (reflects no deduction for fees, expenses and taxes)

1 Year

rr_AverageAnnualReturnYear01

26.53%

5 Years

rr_AverageAnnualReturnYear05

15.52%

Since Inception

rr_AverageAnnualReturnSinceInception

12.43%

Inception Date

rr_AverageAnnualReturnInceptionDate

Oct. 02, 2017

Brown Advisory Mid-Cap Growth Fund | Russell Midcap® Growth Index (reflects no deduction for fees, expenses and taxes)

Prospectus [Line Items]

rr_ProspectusLineItems

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses and taxes)

Label

rr_AverageAnnualReturnLabel

Russell Midcap® Growth Index (reflects no deduction for fees, expenses and taxes)

1 Year

rr_AverageAnnualReturnYear01

25.87%

5 Years

rr_AverageAnnualReturnYear05

13.81%

Since Inception

rr_AverageAnnualReturnSinceInception

11.13%

Inception Date

rr_AverageAnnualReturnInceptionDate

Oct. 02, 2017

Brown Advisory Mid-Cap Growth Fund | Institutional Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BAFMX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.65%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

none

Other Expenses

rr_Component2OtherExpensesOverAssets

0.19%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[3]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.85%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.02%)

^[4]

Net Expenses (as a percentage of Assets)

rr_NetExpensesOverAssets

0.83%

^[4]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 85

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

269

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

469

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,047

Label

rr_AverageAnnualReturnLabel

–Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

23.21%

5 Years

rr_AverageAnnualReturnYear05

11.54%

Since Inception

rr_AverageAnnualReturnSinceInception

9.36%

Inception Date

rr_AverageAnnualReturnInceptionDate

Oct. 02, 2017

Brown Advisory Mid-Cap Growth Fund | Investor Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BMIDX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.65%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.15%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.19%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[3]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

1.00%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.02%)

^[4]

Net Expenses (as a percentage of Assets)

rr_NetExpensesOverAssets

0.98%

^[4]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 100

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

316

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

551

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,223

Annual Return 2018

rr_AnnualReturn2018

(1.72%)

Annual Return 2019

rr_AnnualReturn2019

38.10%

Annual Return 2020

rr_AnnualReturn2020

32.27%

Annual Return 2021

rr_AnnualReturn2021

6.34%

Annual Return 2022

rr_AnnualReturn2022

(28.25%)

Annual Return 2023

rr_AnnualReturn2023

22.97%

Label

rr_AverageAnnualReturnLabel

–Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

22.97%

5 Years

rr_AverageAnnualReturnYear05

11.38%

Since Inception

rr_AverageAnnualReturnSinceInception

9.19%

Brown Advisory Mid-Cap Growth Fund | Investor Shares | After Taxes on Distributions

Prospectus [Line Items]

rr_ProspectusLineItems

Label

rr_AverageAnnualReturnLabel

–Return After Taxes on Distributions

1 Year

rr_AverageAnnualReturnYear01

22.97%

5 Years

rr_AverageAnnualReturnYear05

10.37%

Since Inception

rr_AverageAnnualReturnSinceInception

8.33%

Brown Advisory Mid-Cap Growth Fund | Investor Shares | After Taxes on Distributions and Sales

Prospectus [Line Items]

rr_ProspectusLineItems

Label

rr_AverageAnnualReturnLabel

–Return After Taxes on Distributions and Sale of Fund Shares

1 Year

rr_AverageAnnualReturnYear01

13.60%

5 Years

rr_AverageAnnualReturnYear05

8.89%

Since Inception

rr_AverageAnnualReturnSinceInception

7.17%

Brown Advisory Mid-Cap Growth Fund | Advisor Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.65%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.15%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.19%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[3]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

1.25%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.02%)

^[4]

Net Expenses (as a percentage of Assets)

rr_NetExpensesOverAssets

1.23%

^[4]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 125

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

395

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

684

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,510

Inception Date

rr_AverageAnnualReturnInceptionDate

Oct. 02, 2017

Brown Advisory Small-Cap Growth Fund

Prospectus [Line Items]

rr_ProspectusLineItems

Risk/Return [Heading]

rr_RiskReturnHeading

Brown Advisory Small‑Cap Growth Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Brown Advisory Small-Cap Growth Fund (the “Fund”) seeks to achieve long-term capital appreciation by primarily investing in equity securities.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses(expenses that you pay each year as a percentage of the value of your investment)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

performance. During the most recent fiscal year, the portfolio turnover rate for the Fund was 28% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

28.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal conditions, Brown Advisory LLC (the “Adviser”) seeks to achieve the Fund’s investment objective by investing at least 80% of the value of its net assets (plus any borrowings for investment purposes) in equity securities of small domestic companies. Small companies, according to the Adviser, are companies whose market capitalizations are generally less than $6 billion or the maximum capitalization of companies in the Russell 2000® Growth Index (which was approximately $15.4 billion as of September 30, 2024), whichever is greater, at the time of purchase. The Fund invests primarily in companies the Adviser believes have above average growth prospects. The Adviser conducts an in-depth analysis of a company’s fundamentals to identify those companies it believes have the potential for long-term earnings growth that is not fully reflected in the security’s price.

Equity securities include domestic common and preferred stock, convertible debt securities, American Depositary Receipts (“ADRs”), real estate investment trusts (“REITs”) and exchange traded funds (“ETFs”). The Fund may also invest in private placements in these types of securities. The Fund invests primarily in ETFs that have an investment objective similar to the Fund’s or that otherwise are permitted investments with the Fund’s investment policies described herein. ADRs are equity securities traded on U.S. securities exchanges, which are generally issued by banks or trust companies to evidence ownership of foreign equity securities. The Fund may invest up to 20% of its net assets in foreign securities, including in emerging markets.

The Adviser may sell a security or reduce its position if it believes:

•The security subsequently fails to meet initial investment criteria;

•A more attractively priced security is found; or

•The security becomes overvalued relative to the long-term expectation.

Strategy Portfolio Concentration [Text]

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. The Fund may invest up to 20% of its net assets in foreign securities, including in emerging markets.

Risk [Heading]

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Principal Investment Risks

Bar Chart and Performance Table [Heading]

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Performance Information

Performance Narrative [Text Block]

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The following performance information provides some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund’s performance of Investor Shares from year-to-year. The table shows how the average annual returns of Investor Shares, Advisor Shares and Institutional Shares for 1 year, 5 year, and 10 year periods compare to the Fund's primary broad-based market index and a secondary index provided to offer additional market perspective. In accordance with new regulatory requirements, the Fund has selected the Russell 1000® Index as the Fund’s new primary benchmark. The Fund’s former primary benchmark, the Russell 2000® Growth Index, is also included for comparison.

Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results. Updated performance information is available online at www.brownadvisory.com/mf/small-cap-growth-fund or by calling 800‑540‑6807 (toll free).

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The following performance information provides some indication of the risks of investing in the Fund.

Performance Additional Market Index [Text]

rr_PerformanceAdditionalMarketIndex

The table shows how the average annual returns of Investor Shares, Advisor Shares and Institutional Shares for 1 year, 5 year, and 10 year periods compare to the Fund's primary broad-based market index and a secondary index provided to offer additional market perspective.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

800‑540‑6807

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.brownadvisory.com/mf/small-cap-growth-fund

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results.

Bar Chart [Heading]

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Brown Advisory Small-Cap Growth Fund – Investor Shares Annual Total Returns

Bar Chart Closing [Text Block]

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The Fund’s calendar year-to-date total return as of September 30, 2024 was 5.48%. During the periods shown in the chart, the highest quarterly return was 30.56% (for the quarter ended June 30, 2020) and the lowest quarterly return was -23.30% (for the quarter ended March 31, 2020).

Year to Date Return, Label

rr_YearToDateReturnLabel

year-to-date total return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2024

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

5.48%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

highest quarterly return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2020

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

30.56%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

lowest quarterly return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Mar. 31, 2020

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(23.30%)

Performance Table Heading

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Brown Advisory Small-Cap Growth Fund Average Annual Total Returns

Performance Table Does Reflect Sales Loads

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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.

Performance Table Market Index Changed

rr_PerformanceTableMarketIndexChanged

In accordance with new regulatory requirements, the Fund has selected the Russell 1000® Index as the Fund’s new primary benchmark. The Fund’s former primary benchmark, the Russell 2000® Growth Index, is also included for comparison.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

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.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown for Investor Shares only. After-tax returns for Advisor Shares and Institutional Shares will vary.

Performance Table Closing [Text Block]

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Brown Advisory Small-Cap Growth Fund | Risk Lose Money [Member]

Prospectus [Line Items]

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Risk [Text Block]

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As with all mutual funds, there is the risk that you could lose all or a portion of your investment in the Fund.

Brown Advisory Small-Cap Growth Fund | Risk Not Insured Depository Institution [Member]

Prospectus [Line Items]

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Risk [Text Block]

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An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Brown Advisory Small-Cap Growth Fund | American Depositary Receipts (“ADRs”) And Global Depository Receipts (“GDRs”) Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory Small-Cap Growth Fund | Convertible Securities Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory Small-Cap Growth Fund | Emerging Markets Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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securities markets and legal systems, potentially high inflation rates, and the influence of foreign governments over the private sector. In addition, companies in emerging market countries may not be subject to accounting, auditing, financial reporting and recordkeeping requirements that are as robust as those in more developed countries, and therefore, material information about a company may be unavailable or unreliable, and U.S. regulators may be unable to enforce a company’s regulatory obligations. Emerging markets countries are also subject to potential expropriation or nationalization of private properties and other adverse political, economic and social events. Emerging markets countries are often particularly sensitive to market movements because their market prices tend to reflect speculative expectations. Low trading volumes may result in a lack of liquidity and in extreme price volatility. Investors should be able to tolerate sudden, sometimes substantial, fluctuations in the value of their investments. Emerging market countries may have policies that restrict investment by foreigners or that prevent foreign investors from withdrawing their money at will.

Brown Advisory Small-Cap Growth Fund | Equity And General Market Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory Small-Cap Growth Fund | ETF Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory Small-Cap Growth Fund | Foreign Securities Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory Small-Cap Growth Fund | Growth Company Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Growth Company Risk. Securities of growth companies can be more sensitive to the company’s earnings and more volatile than the market in general.

Brown Advisory Small-Cap Growth Fund | Management Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Management Risk. The Fund may not meet its investment objective based on the Adviser’s success or failure to implement investment strategies for the Fund.

Brown Advisory Small-Cap Growth Fund | Private Placement Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory Small-Cap Growth Fund | REIT And Real Estate Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory Small-Cap Growth Fund | Smaller Company Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Smaller Company Risk. Securities of companies smaller than larger companies may be more volatile and as a result, the price of smaller companies may decline more in response to selling pressure.

Brown Advisory Small-Cap Growth Fund | Russell 1000® Index (reflects no deduction for fees, expenses and taxes)

Prospectus [Line Items]

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Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses and taxes)

Label

rr_AverageAnnualReturnLabel

Russell 1000® Index (reflects no deduction for fees, expenses and taxes)

1 Year

rr_AverageAnnualReturnYear01

26.53%

5 Years

rr_AverageAnnualReturnYear05

15.52%

10 Years

rr_AverageAnnualReturnYear10

11.80%

Brown Advisory Small-Cap Growth Fund | Russell 2000® Growth Index (reflects no deductions for fees, expenses and taxes)

Prospectus [Line Items]

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Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses and taxes)

Label

rr_AverageAnnualReturnLabel

Russell 2000® Growth Index (reflects no deduction for fees, expenses and taxes)

1 Year

rr_AverageAnnualReturnYear01

18.66%

5 Years

rr_AverageAnnualReturnYear05

9.22%

10 Years

rr_AverageAnnualReturnYear10

7.16%

Brown Advisory Small-Cap Growth Fund | Institutional Shares

Prospectus [Line Items]

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Trading Symbol

dei_TradingSymbol

BAFSX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.85%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

none

Other Expenses

rr_Component2OtherExpensesOverAssets

0.10%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.02%

^[5]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.97%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 99

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

309

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

536

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,190

Label

rr_AverageAnnualReturnLabel

–Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

12.56%

5 Years

rr_AverageAnnualReturnYear05

11.27%

10 Years

rr_AverageAnnualReturnYear10

8.56%

Brown Advisory Small-Cap Growth Fund | Investor Shares

Prospectus [Line Items]

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Trading Symbol

dei_TradingSymbol

BIASX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.85%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.15%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.10%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.02%

^[5]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

1.12%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 114

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

356

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

617

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,363

Annual Return 2014

rr_AnnualReturn2014

0.02%

Annual Return 2015

rr_AnnualReturn2015

8.05%

Annual Return 2016

rr_AnnualReturn2016

9.55%

Annual Return 2017

rr_AnnualReturn2017

16.91%

Annual Return 2018

rr_AnnualReturn2018

(4.36%)

Annual Return 2019

rr_AnnualReturn2019

33.49%

Annual Return 2020

rr_AnnualReturn2020

31.76%

Annual Return 2021

rr_AnnualReturn2021

7.44%

Annual Return 2022

rr_AnnualReturn2022

(20.34%)

Annual Return 2023

rr_AnnualReturn2023

12.43%

Label

rr_AverageAnnualReturnLabel

–Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

12.43%

5 Years

rr_AverageAnnualReturnYear05

11.10%

10 Years

rr_AverageAnnualReturnYear10

8.40%

Brown Advisory Small-Cap Growth Fund | Investor Shares | After Taxes on Distributions

Prospectus [Line Items]

rr_ProspectusLineItems

Label

rr_AverageAnnualReturnLabel

–Return After Taxes on Distributions

1 Year

rr_AverageAnnualReturnYear01

12.43%

5 Years

rr_AverageAnnualReturnYear05

9.90%

10 Years

rr_AverageAnnualReturnYear10

6.86%

Brown Advisory Small-Cap Growth Fund | Investor Shares | After Taxes on Distributions and Sales

Prospectus [Line Items]

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Label

rr_AverageAnnualReturnLabel

–Return After Taxes on Distributions and Sale of Fund Shares

1 Year

rr_AverageAnnualReturnYear01

7.36%

5 Years

rr_AverageAnnualReturnYear05

8.82%

10 Years

rr_AverageAnnualReturnYear10

6.44%

Brown Advisory Small-Cap Growth Fund | Advisor Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BASAX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.85%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.15%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.10%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.02%

^[5]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

1.37%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 139

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

434

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

750

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,646

Label

rr_AverageAnnualReturnLabel

–Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

12.06%

5 Years

rr_AverageAnnualReturnYear05

10.81%

10 Years

rr_AverageAnnualReturnYear10

8.13%

Brown Advisory Small‑Cap Fundamental Value Fund

Prospectus [Line Items]

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Risk/Return [Heading]

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Brown Advisory Small‑Cap Fundamental Value Fund

Objective [Heading]

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Investment Objective

Objective, Primary [Text Block]

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The Brown Advisory Small-Cap Fundamental Value Fund (the “Fund”) seeks to achieve long-term capital appreciation.

Expense [Heading]

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Fees and Expenses

Expense Narrative [Text Block]

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Shareholder Fees Caption [Text]

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Shareholder Fees(fees paid directly from your investment)

Operating Expenses Caption [Text]

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Annual Fund Operating Expenses(expenses that you pay each year as a percentage of the value of your investment)

Portfolio Turnover [Heading]

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Portfolio Turnover

Portfolio Turnover [Text Block]

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Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

44.00%

Expense Example [Heading]

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Example

Expense Example Narrative [Text Block]

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Expense Example by, Year, Caption [Text]

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Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

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Under normal conditions, Brown Advisory LLC (the “Adviser”) seeks to achieve the Fund’s investment objective by investing at least 80% of the value of its net assets (plus any borrowings for investment purposes) in equity securities of small capitalization companies. Equity securities include common stock, preferred stock, equity-equivalent securities such as convertible securities, stock futures contracts, equity options, other investment companies, American Depositary Receipts (“ADRs”), real estate investment trusts (“REITs”) and exchange traded funds (“ETFs”), and the Fund may also invest in private placements in these types of securities. Small companies, according to the Adviser, are companies whose market capitalizations are generally less than $6 billion or the maximum capitalization of companies in the Russell 2000® Value Index (which was approximately $15.4 billion as of September 30, 2024), whichever is greater, at the time of purchase. The Fund invests primarily in equity securities that trade in the U.S. securities markets and that the Adviser believes are undervalued, broadly defined as trading at a discount to the estimated economic value of a company’s underlying business. The Adviser uses a research-driven analysis that results in the Fund’s portfolio having an emphasis on out-of-favor or under-followed, cash-generating companies with sustainable business models, strong finances, competent management and a demonstrable record of profitability and self-funded growth. The Fund may also invest in cyclical companies or companies that have experienced a temporary setback if the valuation of the company is at an appropriate discount to the long-term earnings potential of the company. To a more limited extent, the Fund may invest up to 15% of its assets in foreign equity securities, including equity securities from emerging markets. With respect to 20% of its assets, the Fund may also invest in foreign or domestic debt securities, including up to 5% of its assets in distressed debt securities. The Fund may utilize options, futures contracts and options on futures. These investments will typically be made for investment purposes consistent with the Fund’s investment objective and may also be used to mitigate or hedge risks within the portfolio or for the temporary investment of cash balances. By investing in derivatives, the Fund attempts to achieve the economic equivalence it would achieve if it were to invest directly in the underlying security. Investments in derivatives may be counted towards the Fund’s 80% investment policy if they have economic characteristics similar to the other investments that are included in the Fund’s 80% investment policy. The Fund intends to use the mark-to-market value of such derivatives for purposes of complying with the Fund’s 80% investment policy.

The Fund invests primarily in ETFs that have an investment objective similar to the Fund’s or that otherwise are permitted investments with the Fund’s investment policies described herein. ADRs are equity securities traded on U.S. securities exchanges, which are generally issued by banks or trust companies to evidence ownership of foreign equity securities.

The Adviser may sell a security or reduce its position if:

•It has reached its target price;

•Its present reward to risk ratio is unattractive;

•It is overvalued; or

•The company’s fundamentals have deteriorated in a material, long-term manner.

Strategy Portfolio Concentration [Text]

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To a more limited extent, the Fund may invest up to 15% of its assets in foreign equity securities, including equity securities from emerging markets. With respect to 20% of its assets, the Fund may also invest in foreign or domestic debt securities, including up to 5% of its assets in distressed debt securities. The Fund may utilize options, futures contracts and options on futures. These investments will typically be made for investment purposes consistent with the Fund’s investment objective and may also be used to mitigate or hedge risks within the portfolio or for the temporary investment of cash balances. By investing in derivatives, the Fund attempts to achieve the economic equivalence it would achieve if it were to invest directly in the underlying security. Investments in derivatives may be counted towards the Fund’s 80% investment policy if they have economic characteristics similar to the other investments that are included in the Fund’s 80% investment policy. The Fund intends to use the mark-to-market value of such derivatives for purposes of complying with the Fund’s 80% investment policy.

Risk [Heading]

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Principal Investment Risks

Bar Chart and Performance Table [Heading]

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Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The following performance information provides some indication of the risks of investing in the Fund. The chart shows changes in the Fund’s performance of Investor Shares from year-to-year. The table shows how the average annual returns of Investor Shares, Advisor Shares and Institutional Shares for the 1 year, 5 year, and 10 year periods compare to the Fund's primary broad-based market index and a secondary index provided to offer additional market perspective. In accordance with new regulatory requirements, the Fund has selected the Russell 1000® Index as the Fund’s new primary benchmark. The Fund’s former primary benchmark, the Russell 2000® Value Index, is also included for comparison.

Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results. Updated performance information is available online at www.brownadvisory.com/mf/small-cap-fundamental-value-fund or by calling 800‑540‑6807 (toll free).

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The following performance information provides some indication of the risks of investing in the Fund.

Performance Additional Market Index [Text]

rr_PerformanceAdditionalMarketIndex

The table shows how the average annual returns of Investor Shares, Advisor Shares and Institutional Shares for the 1 year, 5 year, and 10 year periods compare to the Fund's primary broad-based market index and a secondary index provided to offer additional market perspective.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

800‑540‑6807

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.brownadvisory.com/mf/small-cap-fundamental-value-fund

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results.

Bar Chart [Heading]

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Brown Advisory Small-Cap Fundamental Value Fund – Investor Shares Annual Total Returns

Bar Chart Closing [Text Block]

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The Fund’s calendar year-to-date total return as of September 30, 2024 was 13.54%. During the periods shown in the chart, the highest quarterly return was 20.73% (for the quarter ended December 31, 2020) and the lowest quarterly return was -36.84% (for the quarter ended March 31, 2020).

Year to Date Return, Label

rr_YearToDateReturnLabel

year-to-date total return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2024

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

13.54%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

highest quarterly return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Dec. 31, 2020

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

20.73%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

lowest quarterly return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Mar. 31, 2020

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(36.84%)

Performance Table Heading

rr_PerformanceTableHeading

Brown Advisory Small-Cap Fundamental Value Fund Average Annual Total Returns

Performance Table Market Index Changed

rr_PerformanceTableMarketIndexChanged

In accordance with new regulatory requirements, the Fund has selected the Russell 1000® Index as the Fund’s new primary benchmark. The Fund’s former primary benchmark, the Russell 2000® Value Index, is also included for comparison.

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

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.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

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.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown for Investor Shares only. After-tax returns for Advisor Shares and Institutional Shares will vary.

Performance Table Closing [Text Block]

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Brown Advisory Small‑Cap Fundamental Value Fund | Risk Lose Money [Member]

Prospectus [Line Items]

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Risk [Text Block]

rr_RiskTextBlock

As with all mutual funds, there is the risk that you could lose all or a portion of your investment in the Fund.

Brown Advisory Small‑Cap Fundamental Value Fund | Risk Not Insured Depository Institution [Member]

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Brown Advisory Small‑Cap Fundamental Value Fund | American Depositary Receipts (“ADRs”) And Global Depository Receipts (“GDRs”) Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

deposited securities are not passed through. GDRs can involve currency risk since, unlike ADRs, they may not be U.S. dollar-denominated.

Brown Advisory Small‑Cap Fundamental Value Fund | Convertible Securities Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory Small‑Cap Fundamental Value Fund | Debt/Fixed Income Securities Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory Small‑Cap Fundamental Value Fund | Derivatives Risk Member

Prospectus [Line Items]

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Risk [Text Block]

rr_RiskTextBlock

Derivatives Risk. The risk that an investment in derivatives will not perform as anticipated, cannot be closed out at a favorable time or price, or will increase the Fund’s volatility; that derivatives may create investment leverage; that, when a derivative is used as a substitute or alternative to a direct cash investment, the transaction may not provide a return that corresponds precisely with that of the cash investment; that a derivative will not perform in the manner anticipated by the Adviser, which may result in losses that partially or completely offset gains in portfolio positions; or that, when used for hedging purposes, derivatives will not provide the anticipated protection, causing the Fund to lose money on both the derivatives transaction and the exposure the Fund sought to hedge. The risks of investing in derivative instruments also include leverage, liquidity, market, credit, operational and legal risks. Additionally, any derivatives held by the Fund will have counterparty associated risks, which are the risks that the other party to the derivative contract, which may be a derivatives exchange, will fail to make required payments or otherwise fail to comply with the terms of the contract. The Fund potentially could lose all or a large portion of its investment in the derivative instrument.

Brown Advisory Small‑Cap Fundamental Value Fund | Emerging Markets Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Small‑Cap Fundamental Value Fund | Equity And General Market Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Small‑Cap Fundamental Value Fund | ETF Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Small‑Cap Fundamental Value Fund | Foreign Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Small‑Cap Fundamental Value Fund | Investments in Other Investment Companies Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Investments in Other Investment Companies Risk. Shareholders of the Fund will indirectly be subject to the fees and expenses of the other investment companies in which the Fund invests, and these fees and expenses are in addition to the fees and expenses that Fund shareholders directly bear in connection with the Fund’s own operations. In addition, shareholders will be exposed to the investment risks associated with investments in the other investment companies.

Brown Advisory Small‑Cap Fundamental Value Fund | Management Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Management Risk. The Fund may not meet its investment objective based on the Adviser’s success or failure to implement investment strategies for the Fund.

Brown Advisory Small‑Cap Fundamental Value Fund | Non-Investment Grade ("Junk Bond") Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Small‑Cap Fundamental Value Fund | Private Placement Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Small‑Cap Fundamental Value Fund | REIT And Real Estate Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Small‑Cap Fundamental Value Fund | Smaller Company Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Smaller Company Risk. Securities of companies smaller than larger companies may be more volatile and as a result, the price of smaller companies may decline more in response to selling pressure.

Brown Advisory Small‑Cap Fundamental Value Fund | Value Company Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

•Value Company Risk. The stock of value companies can continue to be undervalued for long periods of time and not realize its expected value. The value of the Fund may decrease in response to the activities and financial prospects of an individual company.

Brown Advisory Small‑Cap Fundamental Value Fund | Russell 1000® Index (reflects no deduction for fees, expenses and taxes)

Prospectus [Line Items]

rr_ProspectusLineItems

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses and taxes)

Label

rr_AverageAnnualReturnLabel

Russell 1000® Index (reflects no deduction for fees, expenses and taxes)

1 Year

rr_AverageAnnualReturnYear01

26.53%

5 Years

rr_AverageAnnualReturnYear05

15.52%

10 Years

rr_AverageAnnualReturnYear10

11.80%

Brown Advisory Small‑Cap Fundamental Value Fund | Russell 2000 Value® Index (reflects no deduction for fees, expenses and taxes)

Prospectus [Line Items]

rr_ProspectusLineItems

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses and taxes)

Label

rr_AverageAnnualReturnLabel

Russell 2000® Value Index (reflects no deduction for fees, expenses and taxes)

1 Year

rr_AverageAnnualReturnYear01

14.65%

5 Years

rr_AverageAnnualReturnYear05

10.00%

10 Years

rr_AverageAnnualReturnYear10

6.76%

Brown Advisory Small‑Cap Fundamental Value Fund | Institutional Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BAUUX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.85%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

none

Other Expenses

rr_Component2OtherExpensesOverAssets

0.10%

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.95%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 97

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

303

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

525

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,166

Label

rr_AverageAnnualReturnLabel

–Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

16.17%

5 Years

rr_AverageAnnualReturnYear05

10.32%

10 Years

rr_AverageAnnualReturnYear10

6.91%

Brown Advisory Small‑Cap Fundamental Value Fund | Investor Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BIAUX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.85%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.15%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.10%

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

1.10%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 112

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

350

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

606

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,340

Annual Return 2014

rr_AnnualReturn2014

5.98%

Annual Return 2015

rr_AnnualReturn2015

(5.70%)

Annual Return 2016

rr_AnnualReturn2016

21.86%

Annual Return 2017

rr_AnnualReturn2017

12.20%

Annual Return 2018

rr_AnnualReturn2018

(13.29%)

Annual Return 2019

rr_AnnualReturn2019

23.99%

Annual Return 2020

rr_AnnualReturn2020

(5.70%)

Annual Return 2021

rr_AnnualReturn2021

31.11%

Annual Return 2022

rr_AnnualReturn2022

(8.77%)

Annual Return 2023

rr_AnnualReturn2023

16.00%

Label

rr_AverageAnnualReturnLabel

–Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

16.00%

5 Years

rr_AverageAnnualReturnYear05

10.16%

10 Years

rr_AverageAnnualReturnYear10

6.75%

Brown Advisory Small‑Cap Fundamental Value Fund | Investor Shares | After Taxes on Distributions

Prospectus [Line Items]

rr_ProspectusLineItems

Label

rr_AverageAnnualReturnLabel

–Return After Taxes on Distributions

1 Year

rr_AverageAnnualReturnYear01

14.40%

5 Years

rr_AverageAnnualReturnYear05

9.26%

10 Years

rr_AverageAnnualReturnYear10

5.67%

Brown Advisory Small‑Cap Fundamental Value Fund | Investor Shares | After Taxes on Distributions and Sales

Prospectus [Line Items]

rr_ProspectusLineItems

Label

rr_AverageAnnualReturnLabel

–Return After Taxes on Distributions and Sale of Fund Shares

1 Year

rr_AverageAnnualReturnYear01

10.55%

5 Years

rr_AverageAnnualReturnYear05

7.97%

10 Years

rr_AverageAnnualReturnYear10

5.19%

Brown Advisory Small‑Cap Fundamental Value Fund | Advisor Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BAUAX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.85%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.15%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.10%

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

1.35%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 137

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

428

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

739

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,624

Label

rr_AverageAnnualReturnLabel

–Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

15.72%

5 Years

rr_AverageAnnualReturnYear05

9.88%

10 Years

rr_AverageAnnualReturnYear10

6.48%

Brown Advisory Sustainable Small-Cap Core Fund

Prospectus [Line Items]

rr_ProspectusLineItems

Risk/Return [Heading]

rr_RiskReturnHeading

Brown Advisory Sustainable Small-Cap Core Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Brown Advisory Sustainable Small-Cap Core Fund (the “Fund”) seeks long-term capital appreciation by investing primarily in equity securities of small-cap companies.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses(expenses that you pay each year as a percentage of the value of your investment)

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

October 31, 2025

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

32.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Equity securities include domestic common and preferred stock, equity-equivalent securities such as convertible securities, stock futures contracts, equity options, other investment companies, American Depositary Receipts (“ADRs”), real estate investment trusts (“REITs”) and exchange traded funds (“ETFs”). The Fund may also invest in private placements in these types of securities. The Fund may invest in ETFs that have an investment objective similar to the Fund’s or that otherwise are permitted investments with the Fund’s investment policies described herein. ADRs are equity securities traded on U.S. securities exchanges, which are generally issued by banks or trust companies to evidence ownership of foreign equity securities. The Fund may invest up to 20% of its net assets in foreign securities, including in emerging markets.

The Fund will invest primarily in securities the Adviser believes have strong business fundamentals and attractive valuations. The Adviser seeks securities with established or improving sustainability characteristics, defined as companies that use internal sustainability strategies to improve their financial position. The Adviser seeks companies with low exposure to sustainability risks, or that have strong risk management practices in place where these risks may by present.

The Adviser pursues strategic engagement with companies and other stakeholders in an effort to enhance due diligence and monitor the investment thesis.

The Adviser considers each proxy voting proposal related to holdings in the Fund on its own merits and an independent determination is made based on the relevant facts and circumstances, in consideration of the Adviser’s current Proxy Voting Policy.

The Adviser may sell a security or reduce its position if it believes:

•The security subsequently fails to meet initial Investment Criteria;

•A more attractively priced security is found; or

•The security becomes overvalued relative to the long-term expectation.

Strategy Portfolio Concentration [Text]

rr_StrategyPortfolioConcentration

The Fund may invest up to 20% of its net assets in foreign securities, including in emerging markets.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The following performance information provides some indication of the risks of investing in the Fund. The chart shows the changes in the Fund’s performance of Investor Shares from year-to-year. The table shows how the average annual returns of Investor Shares and Institutional Shares for the 1 year and since inception periods compare to the Fund's primary broad-based market index and a secondary index provided to offer additional market perspective. In accordance with new regulatory requirements, the Fund has selected the Russell 1000® Index as the Fund’s new primary benchmark. The Fund’s former primary benchmark, the Russell 2000® Index, is also included for comparison.

Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results. Updated performance information is available online at https://www.brownadvisory.com/mf/funds/sustainable-small-cap-core-fund or by calling 800-540-6807 (toll free) or 414-203-9064.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The following performance information provides some indication of the risks of investing in the Fund.

Performance Additional Market Index [Text]

rr_PerformanceAdditionalMarketIndex

The table shows how the average annual returns of Investor Shares and Institutional Shares for the 1 year and since inception periods compare to the Fund's primary broad-based market index and a secondary index provided to offer additional market perspective.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

800-540-6807

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

https://www.brownadvisory.com/mf/funds/sustainable-small-cap-core-fund

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results.

Bar Chart [Heading]

rr_BarChartHeading

Brown Advisory Sustainable Small-Cap Core Fund– Investor Shares Annual Total Returns

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

The Fund’s calendar year-to-date total return as of September 30, 2024 was 8.55%. During the period shown in the chart, the highest quarterly return was 13.91% (for the quarter ended December 31, 2023) and the lowest quarterly return was -15.96% (for the quarter ended June 30, 2022).

Year to Date Return, Label

rr_YearToDateReturnLabel

year-to-date

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2024

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

8.55%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

highest quarterly return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Dec. 31, 2023

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

13.91%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

lowest quarterly return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Jun. 30, 2022

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(15.96%)

Performance Table Heading

rr_PerformanceTableHeading

Brown Advisory Sustainable Small-Cap Core FundAverage Annual Total Returns

Performance Table Market Index Changed

rr_PerformanceTableMarketIndexChanged

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

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.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

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.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown for Investor Shares only. After-tax returns for Institutional Shares will vary.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

In certain cases, the figure representing “Return after Taxes on Distributions and Sale of Fund Shares” may be higher than the other return figures for the same period, since a higher after-tax return results when a capital loss occurs upon redemption and provides an assumed tax deduction that benefits the investor.

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

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. In certain cases, the figure representing “Return after Taxes on Distributions and Sale of Fund Shares” may be higher than the other return figures for the same period, since a higher after-tax return results when a capital loss occurs upon redemption and provides an assumed tax deduction that benefits the investor. 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. After-tax returns are shown for Investor Shares only. After-tax returns for Institutional Shares will vary.

Brown Advisory Sustainable Small-Cap Core Fund | Risk Lose Money [Member]

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

As with all mutual funds, there is the risk that you could lose all or a portion of your investment in the Fund.

Brown Advisory Sustainable Small-Cap Core Fund | Risk Not Insured Depository Institution [Member]

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Brown Advisory Sustainable Small-Cap Core Fund | American Depositary Receipts (“ADRs”) And Global Depository Receipts (“GDRs”) Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable Small-Cap Core Fund | Convertible Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable Small-Cap Core Fund | Emerging Markets Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable Small-Cap Core Fund | Equity And General Market Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable Small-Cap Core Fund | ETF Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable Small-Cap Core Fund | Foreign Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable Small-Cap Core Fund | Investments in Other Investment Companies Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable Small-Cap Core Fund | Management Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Management Risk. The Fund may not meet its investment objective based on the Adviser’s success or failure to implement investment strategies for the Fund.

Brown Advisory Sustainable Small-Cap Core Fund | Private Placement Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable Small-Cap Core Fund | REIT And Real Estate Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable Small-Cap Core Fund | Smaller Company Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Smaller Company Risk. Securities of companies smaller than larger companies may be more volatile and as a result, the price of smaller companies may decline more in response to selling pressure.

Brown Advisory Sustainable Small-Cap Core Fund | Sustainable Investing Policy Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable Small-Cap Core Fund | Russell 1000® Index (reflects no deduction for fees, expenses and taxes)

Prospectus [Line Items]

rr_ProspectusLineItems

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses and taxes)

Label

rr_AverageAnnualReturnLabel

Russell 1000® Index (reflects no deduction for fees, expenses and taxes)

1 Year

rr_AverageAnnualReturnYear01

26.53%

Since Inception

rr_AverageAnnualReturnSinceInception

5.30%

Inception Date

rr_AverageAnnualReturnInceptionDate

Sep. 30, 2021

Brown Advisory Sustainable Small-Cap Core Fund | Russell 2000 Index (reflects no deduction for fees, expenses and taxes)

Prospectus [Line Items]

rr_ProspectusLineItems

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses and taxes)

Label

rr_AverageAnnualReturnLabel

Russell 2000® Index (reflects no deduction for fees, expenses and taxes)

1 Year

rr_AverageAnnualReturnYear01

16.93%

Since Inception

rr_AverageAnnualReturnSinceInception

(2.24%)

Inception Date

rr_AverageAnnualReturnInceptionDate

Sep. 30, 2021

Brown Advisory Sustainable Small-Cap Core Fund | Institutional Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BAFYX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.85%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

none

Other Expenses

rr_Component2OtherExpensesOverAssets

0.22%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[6]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

1.08%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.14%)

^[7]

Net Expenses (as a percentage of Assets)

rr_NetExpensesOverAssets

0.94%

^[7]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 96

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

330

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

582

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,305

Label

rr_AverageAnnualReturnLabel

–Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

17.53%

Since Inception

rr_AverageAnnualReturnSinceInception

(1.68%)

Brown Advisory Sustainable Small-Cap Core Fund | Investor Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BIAYX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.85%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.15%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.22%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[6]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

1.23%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.14%)

^[7]

Net Expenses (as a percentage of Assets)

rr_NetExpensesOverAssets

1.09%

^[7]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 111

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

376

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

662

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,476

Annual Return 2022

rr_AnnualReturn2022

(20.21%)

Annual Return 2023

rr_AnnualReturn2023

17.39%

Label

rr_AverageAnnualReturnLabel

–Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

17.39%

Since Inception

rr_AverageAnnualReturnSinceInception

(1.84%)

Inception Date

rr_AverageAnnualReturnInceptionDate

Sep. 30, 2021

Brown Advisory Sustainable Small-Cap Core Fund | Investor Shares | After Taxes on Distributions

Prospectus [Line Items]

rr_ProspectusLineItems

Label

rr_AverageAnnualReturnLabel

–Return After Taxes on Distributions

1 Year

rr_AverageAnnualReturnYear01

17.39%

Since Inception

rr_AverageAnnualReturnSinceInception

(1.84%)

Brown Advisory Sustainable Small-Cap Core Fund | Investor Shares | After Taxes on Distributions and Sales

Prospectus [Line Items]

rr_ProspectusLineItems

Label

rr_AverageAnnualReturnLabel

–Return After Taxes on Distributions and Sale of Fund Shares

1 Year

rr_AverageAnnualReturnYear01

10.30%

Since Inception

rr_AverageAnnualReturnSinceInception

(1.40%)

Brown Advisory Sustainable Small-Cap Core Fund | Advisor Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.85%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.15%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.22%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[6]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

1.48%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.14%)

^[7]

Net Expenses (as a percentage of Assets)

rr_NetExpensesOverAssets

1.34%

^[7]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 136

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

454

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

795

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,756

Brown Advisory Sustainable Small-Cap Core Fund | Institutional Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Inception Date

rr_AverageAnnualReturnInceptionDate

Sep. 30, 2021

Brown Advisory Sustainable Value Fund

Prospectus [Line Items]

rr_ProspectusLineItems

Risk/Return [Heading]

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Brown Advisory Sustainable Value Fund

Objective [Heading]

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Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Brown Advisory Sustainable Value Fund (the “Fund”) seeks to achieve long-term capital appreciation.

Expense [Heading]

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Fees and Expenses

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses(expenses that you pay each year as a percentage of the value of your investment)

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

October 31, 2025

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Expense Example [Heading]

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Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal conditions, Brown Advisory LLC (the “Adviser”) seeks to achieve the Fund’s investment objective by investing at least 80% of the value of its net assets (plus any borrowings for investment purposes) in equity securities that satisfy the Fund’s sustainable investment criteria. The Fund invests primarily in securities of large market capitalization companies that the Adviser deems to meet its “value” and “sustainable investment” criteria, collectively the “Investment Criteria” for the Fund. Large market capitalization companies are, according to the Adviser, those companies with market capitalizations generally greater than $3 billion at the time of purchase. The market capitalizations of the companies in the Fund’s portfolio changes over time; the Fund will not automatically sell or cease to purchase stock of a company it already owns just because the company’s market capitalization falls outside this range.

Equity securities include common stock, preferred stock, equity-equivalent securities such as convertible securities, stock futures contracts, equity options, other investment companies, American Depositary Receipts (“ADRs”), real estate investment trusts (“REITs”) and exchange traded funds (“ETFs”). The Fund may also invest in private placements in these types of securities. The Fund may invest in ETFs that have an investment objective similar to the Fund’s or that otherwise are permitted investments with the Fund’s investment policies described herein. ADRs are equity securities traded on U.S. securities exchanges, which are generally issued by banks or trust companies to evidence ownership of foreign equity securities. The Fund may invest up to 20% of its assets in foreign securities, including in emerging markets. Emerging market countries for these purposes consists of countries in Latin America, Asia, Eastern Europe, Africa and the Middle East, and include, among other countries, Brazil, China, Hong Kong, India, Indonesia and Taiwan.

The Adviser defines “value” as durable free cash flow businesses that exhibit capital discipline and trade at attractive free cashflow yields. The Fund invests primarily in equity securities that trade in the U.S. securities markets and that the Adviser believes are undervalued, broadly defined as trading at a discount to the estimated economic value of a company’s underlying business. The Adviser uses a research-driven analysis that results in the Fund’s portfolio having an emphasis on out-of-favor, cash-generating companies with durable business models, strong finances, competent management and a demonstrable record of prudent capital allocation. The Fund may also invest in cyclical companies or companies that have experienced a temporary setback if the valuation of the company is at an appropriate discount to the long-term earnings potential of the company.

The Adviser defines its sustainable investment criteria as companies that have sustainability characteristics that may improve their financial position and have strong management of sustainability-related risks. The Adviser looks for companies with Sustainable Cash Flow Advantage (“SCFA”) over time. SCFA is part of the broader research process. A majority of the Fund will consist of securities with established or emerging SCFA. SCFA’s have one or more of the following drivers:

•People: For example:

•Attraction, retention and internal promotion of employees drives cost savings while also creating a cultural advantage.

•Leadership on diversity, equity and inclusion has the potential to serve as both a mechanism for improved employee management and generation of revenue tied to innovation.

•Process: For example:

•Sound operations that promote a safe and healthy community can bolster franchise value, while also avoiding regulatory and reputational risk.

•Margin improvement through operations that save costs and resources, enabling meaningful reduction in carbon emissions and natural capital.

•Product: For example:

•Products or services that provide superior customer outcomes resulting in recurring revenue while also providing environmental and/or social solutions.

Additionally, the Adviser pursues strategic engagement with companies and other stakeholders in an effort to enhance due diligence and monitor the investment thesis, including emerging SCFA.

The Adviser considers each proxy voting proposal related to holdings in the Fund on its own merits and an independent determination is made based on the relevant facts and circumstances, in consideration of the Adviser’s current Proxy Voting Policy.

Strategy Portfolio Concentration [Text]

rr_StrategyPortfolioConcentration

The Fund may invest up to 20% of its assets in foreign securities, including in emerging markets. Emerging market countries for these purposes consists of countries in Latin America, Asia, Eastern Europe, Africa and the Middle East, and include, among other countries, Brazil, China, Hong Kong, India, Indonesia and Taiwan.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

Performance information for the Fund is not included because the Fund did not have one full calendar year of performance prior to the date of this prospectus. Performance information will be available in the prospectus once the Fund has at least one calendar year of performance. Updated performance information is available online at www.brownadvisory.com/mf/funds/sustainable-value-fund or by calling 800-540-6807 (toll free) or 414-203-9064.

Performance One Year or Less [Text]

rr_PerformanceOneYearOrLess

Performance information for the Fund is not included because the Fund did not have one full calendar year of performance prior to the date of this prospectus.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

800-540-6807

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.brownadvisory.com/mf/funds/sustainable-value-fund

Brown Advisory Sustainable Value Fund | Risk Lose Money [Member]

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

As with all mutual funds, there is the risk that you could lose all or a portion of your investment in the Fund.

Brown Advisory Sustainable Value Fund | Risk Not Insured Depository Institution [Member]

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Brown Advisory Sustainable Value Fund | American Depositary Receipts And Global Depository Receipts Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

American Depositary Receipts and Global Depository Receipts Risk. ADRs and GDRs may be subject to some of the same risks as direct investment in foreign companies, which includes international trade, currency, political, regulatory and diplomatic risks. In a sponsored ADR arrangement, the foreign issuer assumes the obligation to pay some or all of the depositary’s transaction fees. Under an unsponsored ADR arrangement, the foreign issuer assumes no obligations and the depositary’s transaction fees are paid directly by the ADR holders. Because unsponsored ADR arrangements are organized independently and without the cooperation of the issuer of the underlying securities, available information concerning the foreign issuer may not be as current as for sponsored ADRs and voting rights with respect to the deposited securities are not passed through. GDRs can involve currency risk since, unlike ADRs, they may not be U.S. dollar-denominated.

Brown Advisory Sustainable Value Fund | Convertible Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable Value Fund | Emerging Markets Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

speculative expectations. Low trading volumes may result in a lack of liquidity and in extreme price volatility. Investors should be able to tolerate sudden, sometimes substantial, fluctuations in the value of their investments. Emerging market countries may have policies that restrict investment by foreigners or that prevent foreign investors from withdrawing their money at will.

Brown Advisory Sustainable Value Fund | Equity And General Market Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable Value Fund | ETF Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable Value Fund | Foreign Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable Value Fund | Investments in Other Investment Companies Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable Value Fund | Large Capitalization Company Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Large Capitalization Company Risk. Large capitalization companies may be unable to respond quickly to new competitive challenges like changes in consumer tastes or innovative smaller competitors. In addition, large capitalization companies are sometimes unable to attain the high growth rates of successful, smaller companies, especially during extended periods of economic expansion.

Brown Advisory Sustainable Value Fund | Liquidity Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Liquidity Risk. Certain securities held by the Fund may be difficult (or impossible) to sell at the time and at the price the Fund would like. As a result, the Fund may have to hold these securities longer than it would like and may forego other investment opportunities. There is the possibility that the Fund may lose money or be prevented from realizing capital gains if it cannot sell a security at a particular time and price.

Brown Advisory Sustainable Value Fund | Management Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Management Risk. The Fund may not meet its investment objective based on the Adviser’s success or failure to implement investment strategies for the Fund.

Brown Advisory Sustainable Value Fund | New Fund Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

New Fund Risk. The Fund is new with a limited operating history and there can be no assurance that the Fund will grow to or maintain an economically viable size.

Brown Advisory Sustainable Value Fund | Private Placement Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Private Placement Risk. The Fund may invest in privately issued securities of foreign common and preferred stock, convertible debt securities, ADRs, REITs and ETFs, including those which may be resold only in accordance with Rule 144A under the Securities Act of 1933, as amended. Privately issued securities are restricted securities that are not publicly traded. Delay or difficulty in selling such securities may result in a loss to the Fund.

Brown Advisory Sustainable Value Fund | REIT And Real Estate Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable Value Fund | Sustainable Investing Policy Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable Value Fund | Valuation Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Valuation Risk. The prices provided by pricing services or independent dealers or the fair value determinations made by the Adviser may be different from the prices used by other mutual funds or from the prices at which securities are actually bought and sold. The prices of certain securities provided by pricing services may be subject to frequent and significant change, and will vary depending on the information that is available.

Brown Advisory Sustainable Value Fund | Value Company Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

•Value Company Risk. The stock of value companies can continue to be undervalued for long periods of time and not realize its expected value. The value of investing primarily in value-oriented securities may decrease in response to the activities and financial prospects of an individual company.

Brown Advisory Sustainable Value Fund | Institutional Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BASVX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.60%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

none

Other Expenses

rr_Component2OtherExpensesOverAssets

0.21%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[8]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.82%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.11%)

^[9]

Net Expenses (as a percentage of Assets)

rr_NetExpensesOverAssets

0.71%

^[9]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 73

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

251

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

444

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,003

Brown Advisory Sustainable Value Fund | Investor Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BISVX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.60%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.15%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.21%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[8]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.97%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.11%)

^[9]

Net Expenses (as a percentage of Assets)

rr_NetExpensesOverAssets

0.86%

^[9]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 88

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

298

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

526

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,180

Brown Advisory Sustainable Value Fund | Advisor Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.60%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.15%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.21%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[8]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

1.22%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.11%)

^[9]

Net Expenses (as a percentage of Assets)

rr_NetExpensesOverAssets

1.11%

^[9]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 113

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

376

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

660

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,468

Brown Advisory Global Leaders Fund

Prospectus [Line Items]

rr_ProspectusLineItems

Risk/Return [Heading]

rr_RiskReturnHeading

Brown Advisory Global Leaders Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Brown Advisory Global Leaders Fund (the “Fund”) seeks to achieve long-term capital appreciation by investing primarily in global equities.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses(expenses that you pay each year as a percentage of the value of your investment)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

performance. During the most recent fiscal year, the portfolio turnover rate for the Fund was 15% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

15.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal circumstances, the Fund aims to achieve its investment objective by investing at least 80% of the value of its net assets (plus any borrowings for investment purposes) in equity securities. The Fund also will, under normal market conditions: (1) invest at least 40% of its assets outside the United States, or if market conditions are not favorable, at least 30% of its assets outside the United States, and (2) hold securities of issuers located in at least three countries. The Fund determines where a company is located, and thus, whether a company is considered to be located outside the United States by considering whether: (i) it is organized under the laws of or maintains its principal office in a country located outside the United States; (ii) its securities are principally traded on trading markets in countries located outside the United States; (iii) it derives at least 50% of its total revenue or profits from either goods produced or services performed or sales made in countries located outside the United States; or (iv) it has at least 50% of its assets in countries located outside the United States. The Fund’s non-U.S. investments may include equity securities issued by companies that are established or operating in emerging market countries.

The equity securities in which the Fund may invest will include the equity securities of companies that Brown Advisory Limited (the “Sub-Adviser”) believes are leaders within their industry or country as demonstrated by an ability to deliver high relative return on invested capital over time. This typically can be attributable to, among other things, a strong competitive position and a defendable barrier to entry. These securities also typically use sustainability to compound a competitive advantage and have strong sustainability risk management practices. The equity securities in which the Fund may invest include common stock, preferred stock, equity-equivalent securities, such as stock futures contracts, equity options, other investment companies, American Depositary Receipts (“ADRs”), Global Depositary Receipts (“GDRs”), and exchange traded funds (“ETFs”). The equity securities in which the Fund may invest will generally be issued by mid- and large capitalization companies. Medium and large market capitalization companies are, according to the Sub-Adviser, those companies with market capitalizations generally greater than $2 billion at the time of purchase. In addition to those securities, the Fund may also invest in convertible bonds, Rule 144A securities, U.S. Treasury bills, fixed and/or floating rate U.S. Government securities, real estate investment trusts (“REITs”) and unlisted securities. The Fund may invest in derivatives instruments, such as options, futures contracts, including interest rate futures, and options on futures. These investments will typically be made for investment purposes consistent with the Fund’s investment objective and may also be used to mitigate or hedge risks within the portfolio or for the temporary investment of cash balances.

The Sub-Adviser seeks companies with emerging or mature Sustainable Business Advantages, defined as companies that use internal sustainability strategies to improve their financial position, including, but not limited to, those strategies that lead to revenue growth, cost improvements, or enhanced franchise value. The Sub-Adviser also seeks companies that have strong risk management practices in place where sustainability risks may be present. These considerations are included as part of the broader Investment Criteria for the Fund.

The Sub-Adviser considers each proxy voting proposal related to holdings in the Fund on its own merits and an independent determination is made based on the relevant facts and circumstances, in consideration of the Adviser’s current Proxy Voting Policy.

The Fund may sell its portfolio securities for a variety of reasons, such as to secure gains, limit losses, redeploy assets into more promising opportunities, or, in the Sub-Adviser's view, the investment is no longer attractive.

Strategy Portfolio Concentration [Text]

rr_StrategyPortfolioConcentration

Under normal circumstances, the Fund aims to achieve its investment objective by investing at least 80% of the value of its net assets (plus any borrowings for investment purposes) in equity securities. The Fund also will, under normal market conditions: (1) invest at least 40% of its assets outside the United States, or if market conditions are not favorable, at least 30% of its assets outside the United States, and (2) hold securities of issuers located in at least three countries. The Fund determines where a company is located, and thus, whether a company is considered to be located outside the United States by considering whether: (i) it is organized under the laws of or maintains its principal office in a country located outside the United States; (ii) its securities are principally traded on trading markets in countries located outside the United States; (iii) it derives at least 50% of its total revenue or profits from either goods produced or services performed or sales made in countries located outside the United States; or (iv) it has at least 50% of its assets in countries located outside the United States. The Fund’s non-U.S. investments may include equity securities issued by companies that are established or operating in emerging market countries.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks of the Fund

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results. Updated performance information is available online at www.brownadvisory.com/mf/global-leaders-fund or by calling 800‑540‑6807 (toll free).

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The following performance information provides some indication of the risks of investing in the Fund.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

800‑540‑6807

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.brownadvisory.com/mf/global-leaders-fund

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results.

Bar Chart [Heading]

rr_BarChartHeading

Brown Advisory Global Leaders Fund – Investor Shares Annual Total Returns

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

The Fund’s calendar year-to-date total return as of September 30, 2024 was 15.75%. During the period shown in the chart, the highest quarterly return was 18.98% (for the quarter ended June 30, 2020) and the lowest quarterly return was -18.78% (for the quarter ended March 31, 2020).

Year to Date Return, Label

rr_YearToDateReturnLabel

year-to-date total return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2024

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

15.75%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

highest quarterly return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2020

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

18.98%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

lowest quarterly return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Mar. 31, 2020

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(18.78%)

Performance Table Heading

rr_PerformanceTableHeading

Brown Advisory Global Leaders Fund Average Annual Total Returns

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

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.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. 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.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown for Investor Shares only. After-tax returns for Institutional Shares will vary.

Performance Table Footnotes, Reason Performance Information for Class Different from Immediately Preceding Period [Text]

rr_PerformanceTableFootnotesReasonPerformanceInformationForClassDifferentFromImmediatelyPrecedingPeriod

Performance shown prior to inception of the Institutional Shares is based on the performance of Investor Shares, adjusted for the lower expenses applicable to Institutional Shares.

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

NOTE: The Global Leaders Fund offers two classes of shares. Investor Shares commenced operations on July 1, 2015, and Institutional Shares commenced operations on October 31, 2018. Performance shown prior to inception of the Institutional Shares is based on the performance of Investor Shares, adjusted for the lower expenses applicable to Institutional Shares.

Brown Advisory Global Leaders Fund | Risk Lose Money [Member]

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

As with all mutual funds, there is the risk that you could lose all or a portion of your investment in the Fund.

Brown Advisory Global Leaders Fund | Risk Not Insured Depository Institution [Member]

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Brown Advisory Global Leaders Fund | American Depositary Receipts (“ADRs”) And Global Depository Receipts (“GDRs”) Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Global Leaders Fund | Convertible Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Global Leaders Fund | Currency And Exchange Rate Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Currency and Exchange Rate Risk. Investments in currencies, currency futures contracts, forward currency exchange contracts or similar instruments, as well as securities that are denominated in foreign currency, are subject to the risk that the value of a particular currency will change in relation to one or more other currencies. In addition, the Fund may engage in currency hedging transactions. Currency hedging transactions are subject to the risk that a result opposite expectations occurs (an expected decline turns into a rise and conversely) resulting in a loss to the Fund.

Brown Advisory Global Leaders Fund | Derivatives Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory Global Leaders Fund | Emerging Markets Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory Global Leaders Fund | Equity And General Market Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

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experience periods of high volatility and reduced liquidity. During those periods, the Fund may experience high levels of shareholder redemptions, and may have to sell securities at times when the Fund would otherwise not do so, potentially at unfavorable prices. Certain securities, particularly fixed income securities, may be difficult to value during such periods.

Brown Advisory Global Leaders Fund | ETF Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

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ETF Risk. ETFs may trade at a discount to the aggregate value of the underlying securities and frequent trading of ETFs by the Fund can generate brokerage expenses. Shareholders of the Fund will indirectly be subject to the fees and expenses of the individual ETFs in which the Fund invests and these fees and expenses are in addition to the fees and expenses that Fund shareholders directly bear in connection with the Fund’s own operations.

Brown Advisory Global Leaders Fund | Foreign Securities Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory Global Leaders Fund | Growth Company Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Growth Company Risk. Securities of growth companies can be more sensitive to the company’s earnings and more volatile than the market in general.

Brown Advisory Global Leaders Fund | Investments in Other Investment Companies Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory Global Leaders Fund | Large Capitalization Company Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

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Brown Advisory Global Leaders Fund | Liquidity Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Global Leaders Fund | Management Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

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Management Risk. The Fund may not meet its investment objective based on the Sub-Adviser’s success or failure to implement investment strategies for the Fund.

Brown Advisory Global Leaders Fund | Medium Capitalization Company Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

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Brown Advisory Global Leaders Fund | Private Placement Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Private Placement Risk. The Fund may invest in privately issued securities of foreign common and preferred stock, convertible debt securities, ADRs, real estate investment trusts (“REITs”) and ETFs, including those which may be resold only in accordance with Rule 144A under the Securities Act of 1933, as amended. Privately issued securities are restricted securities that are not publicly traded. Delay or difficulty in selling such securities may result in a loss to the Fund.

Brown Advisory Global Leaders Fund | REIT And Real Estate Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

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Brown Advisory Global Leaders Fund | Sustainable Investing Policy Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory Global Leaders Fund | U.S. Government Securities Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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U.S. Government Securities Risk. Although the Fund’s U.S. Government securities are considered to be among the safest investments, they are not guaranteed against price movements due to changing interest rates. Some obligations issued or guaranteed by U.S. Government agencies and instrumentalities, including, for example, Ginnie Mae pass-through certificates, are supported by the full faith and credit of the U.S. Treasury. Other obligations issued by or guaranteed by federal agencies, such as those securities issued by Fannie Mae, are supported by the discretionary authority of the U.S. Government to purchase certain obligations of the federal agency, while other obligations issued by or guaranteed by federal agencies, such as those of the Federal Home Loan Banks, are supported by the right of the issuer to borrow from the U.S. Treasury. While the U.S. Government provides financial support to such U.S. Government-sponsored federal agencies, no assurance can be given that the U.S. Government will always do so, since the U.S. Government is not so obligated by law. U.S. government securities not backed by the full faith and credit of the U.S. government involve credit risk that is greater than other types of U.S. government securities.

Brown Advisory Global Leaders Fund | Valuation Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory Global Leaders Fund | Value Company Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Value Company Risk. The stock of value companies can continue to be undervalued for long periods of time and not realize its expected value. The value of investing primarily in value-oriented securities may decrease in response to the activities and financial prospects of an individual company.

Brown Advisory Global Leaders Fund | MSCI All Country World Index (ACWI)(reflects no deduction for fees, expenses and taxes)

Prospectus [Line Items]

rr_ProspectusLineItems

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses and taxes)

Label

rr_AverageAnnualReturnLabel

MSCI All Country World Index (ACWI) (reflects no deduction for fees, expenses and taxes)

1 Year

rr_AverageAnnualReturnYear01

22.20%

5 Years

rr_AverageAnnualReturnYear05

11.72%

Since Inception

rr_AverageAnnualReturnSinceInception

8.45%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 01, 2015

Brown Advisory Global Leaders Fund | Institutional Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BAFLX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.65%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

none

Other Expenses

rr_Component2OtherExpensesOverAssets

0.10%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[10]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.76%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 78

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

243

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

422

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 942

Label

rr_AverageAnnualReturnLabel

–Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

26.17%

5 Years

rr_AverageAnnualReturnYear05

13.91%

Since Inception

rr_AverageAnnualReturnSinceInception

11.14%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 01, 2015

Brown Advisory Global Leaders Fund | Investor Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BIALX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.65%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.15%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.10%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[10]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.91%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 93

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

290

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

504

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,120

Annual Return 2016

rr_AnnualReturn2016

(1.34%)

Annual Return 2017

rr_AnnualReturn2017

33.99%

Annual Return 2018

rr_AnnualReturn2018

(2.58%)

Annual Return 2019

rr_AnnualReturn2019

33.95%

Annual Return 2020

rr_AnnualReturn2020

20.26%

Annual Return 2021

rr_AnnualReturn2021

16.67%

Annual Return 2022

rr_AnnualReturn2022

(19.66%)

Annual Return 2023

rr_AnnualReturn2023

26.00%

Label

rr_AverageAnnualReturnLabel

–Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

26.00%

5 Years

rr_AverageAnnualReturnYear05

13.73%

Since Inception

rr_AverageAnnualReturnSinceInception

10.97%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 01, 2015

Brown Advisory Global Leaders Fund | Investor Shares | After Taxes on Distributions

Prospectus [Line Items]

rr_ProspectusLineItems

Label

rr_AverageAnnualReturnLabel

–Return After Taxes on Distributions

1 Year

rr_AverageAnnualReturnYear01

25.89%

5 Years

rr_AverageAnnualReturnYear05

13.60%

Since Inception

rr_AverageAnnualReturnSinceInception

10.88%

Brown Advisory Global Leaders Fund | Investor Shares | After Taxes on Distributions and Sales

Prospectus [Line Items]

rr_ProspectusLineItems

Label

rr_AverageAnnualReturnLabel

–Return After Taxes on Distributions and Sale of Fund Shares

1 Year

rr_AverageAnnualReturnYear01

15.47%

5 Years

rr_AverageAnnualReturnYear05

11.02%

Since Inception

rr_AverageAnnualReturnSinceInception

9.01%

Brown Advisory Global Leaders Fund | Advisor Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.65%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.15%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.10%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[10]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

1.16%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 118

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

368

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

638

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,409

Brown Advisory Sustainable International Leaders Fund

Prospectus [Line Items]

rr_ProspectusLineItems

Risk/Return [Heading]

rr_RiskReturnHeading

Brown Advisory Sustainable International Leaders Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Brown Advisory Sustainable International Leaders Fund (the “Fund”) seeks to achieve long-term capital appreciation by investing primarily in international equities.

Expense [Heading]

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Fees and Expenses

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses(expenses that you pay each year as a percentage of the value of your investment)

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

October 31, 2025

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

27.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal circumstances, the Fund aims to achieve its investment objective by investing at least 80% of the value of its net assets (plus any borrowings for investment purposes) in equity securities that satisfy the Fund’s sustainable investment criteria and that Brown Advisory Limited (the “Sub-Adviser”) believes are leaders within their industry or country as demonstrated by an ability to deliver high relative return on invested capital over time, collectively the “Investment Criteria” for the Fund. This typically can be attributable to, among other things, a strong competitive position and a defendable barrier to entry. The sustainable investment criteria for the Fund includes securities that have strong management of sustainability-related risks with a significant majority also using sustainability to compound a competitive advantage. The Fund also will, under normal market conditions: (1) invest at least 80% of its assets outside the United States, or if market conditions are not favorable, at least 70% of its assets outside the United States, and (2) hold securities of issuers located in at least three countries (not including the United States). The Fund determines where a company is located, and thus, whether a company is considered to be located outside the United States by considering whether: (i) it is organized under the laws of or maintains its principal office in a country located outside the United States; (ii) its securities are principally traded on trading markets in countries located outside the United States; (iii) it derives at least 50% of its total revenue or profits from either goods produced or services performed or sales made in countries located outside the United States; or (iv) it has at least 50% of its assets in countries located outside the United States. The Fund’s non-U.S. investments may include equity securities issued by companies that are established or operating in emerging market countries. Emerging market companies for these purposes consist of companies in emerging market countries in Latin America, Asia, Eastern Europe, Africa, and the Middle East, and include, among other countries, Brazil, China, Hong Kong, India, Indonesia and Taiwan.

The equity securities in which the Fund may invest include common stock, preferred stock, equity-equivalent securities, such as stock futures contracts, equity options, other investment companies, American Depositary Receipts (“ADRs”), Global Depositary Receipts (“GDRs”), and exchange traded funds (“ETFs”). The equity securities in which the Fund may invest will generally be issued by mid- and large capitalization companies. Medium and large market capitalization companies are, according to the Sub-Adviser, those companies with market capitalizations generally greater than $2 billion at the time of purchase. In addition to those securities, the Fund may also invest in convertible bonds, Rule 144A securities, U.S. Treasury bills, fixed and/or floating rate U.S. Government securities, real estate investment trusts (“REITs”) and unlisted securities. The Fund may invest in derivatives instruments, such as options, futures contracts, including interest rate futures, and options on futures. These investments will typically be made for investment purposes consistent with the Fund’s investment objective and may also be used to mitigate or hedge risks within the portfolio or for the temporary investment of cash balances.

The Sub-Adviser leverages research that seeks to understand fundamental and sustainability characteristics for every security added to the portfolio. However, at the Sub-Adviser’s discretion, the Fund is permitted to make an investment without a written sustainable investment research assessment on file at the time of purchase, as long as the Sub-Adviser believes the security meets

the Fund’s sustainable investment criteria. The Sub-Adviser also leverages the resources of Brown Advisory LLC (the “Adviser”).

The Sub-Adviser pursues engagement with certain companies and other stakeholders in an effort to enhance due diligence and monitor the investment thesis.

Strategy Portfolio Concentration [Text]

rr_StrategyPortfolioConcentration

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The following performance information provides some indication of the risks of investing in the Fund. The bar chart shows the Fund’s performance of Investor Shares for one year. The table shows how the average annual returns of Investor Shares for the 1 year and since inception periods compare to the Fund's primary broad-based market index.

Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results. Updated performance information is available online at www.brownadvisory.com/mf/funds/sustainable-international-leaders-fund or by calling 800-540-6807 (toll free) or 414-203-9064.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The following performance information provides some indication of the risks of investing in the Fund.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

800-540-6807

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.brownadvisory.com/mf/funds/sustainable-international-leaders-fund

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results.

Bar Chart [Heading]

rr_BarChartHeading

Brown Advisory Sustainable International Leaders Fund– Investor Shares Annual Total Returns

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

The Fund’s calendar year-to-date total return as of September 30, 2024 was 10.14%. During the period shown in the chart, the highest quarterly return was 12.17% (for the quarter ended December 31, 2023) and the lowest quarterly return was -10.87% (for the quarter ended September 30, 2023).

Year to Date Return, Label

rr_YearToDateReturnLabel

year-to-date total return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2024

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

10.14%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

highest quarterly return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Dec. 31, 2023

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

12.17%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

lowest quarterly return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2023

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(10.87%)

Performance Table Heading

rr_PerformanceTableHeading

Brown Advisory Sustainable International Leaders FundAverage Annual Total Returns

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

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.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

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.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown for Investor Shares only. After-tax returns for Institutional Shares will vary.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

In certain cases, the figure representing “Return after Taxes on Distributions” may be higher than the other return figures for the same period, since a higher after-tax return results when a capital loss occurs upon redemption and provides an assumed tax deduction that benefits the investor.

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

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. In certain cases, the figure representing “Return after Taxes on Distributions” may be higher than the other return figures for the same period, since a higher after-tax return results when a capital loss occurs upon redemption and provides an assumed tax deduction that benefits the investor. 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. After-tax returns are shown for Investor Shares only. After-tax returns for Institutional Shares will vary.

Brown Advisory Sustainable International Leaders Fund | Risk Lose Money [Member]

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

As with all mutual funds, there is the risk that you could lose all or a portion of your investment in the Fund.

Brown Advisory Sustainable International Leaders Fund | Risk Not Insured Depository Institution [Member]

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Brown Advisory Sustainable International Leaders Fund | American Depositary Receipts (“ADRs”) And Global Depository Receipts (“GDRs”) Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable International Leaders Fund | Convertible Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable International Leaders Fund | Currency And Exchange Rate Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable International Leaders Fund | Derivatives Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Derivatives Risk. The risk that an investment in derivatives will not perform as anticipated, cannot be closed out at a favorable time or price, or will increase the Fund’s volatility; that derivatives may create investment leverage; that, when a derivative is used as a substitute or alternative to a direct cash investment, the transaction may not provide a return that corresponds precisely with that of the cash investment; that a derivative will not perform in the manner anticipated by the Sub-Adviser, which may result in losses that partially or completely offset gains in portfolio positions; or that, when used for hedging purposes, derivatives will not provide the anticipated protection, causing the Fund to lose money on both the derivatives transaction and the exposure the Fund sought to hedge. The risks of investing in derivative instruments also include leverage, liquidity, market, credit, operational and legal risks. Additionally, any derivatives held by the Fund will

have counterparty associated risks, which are the risks that the other party to the derivative contract, which may be a derivatives exchange, will fail to make required payments or otherwise fail to comply with the terms of the contract. The Fund potentially could lose all or a large portion of its investment in the derivative instrument.

Brown Advisory Sustainable International Leaders Fund | Emerging Markets Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable International Leaders Fund | Equity And General Market Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable International Leaders Fund | ETF Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable International Leaders Fund | Foreign Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable International Leaders Fund | Growth Company Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Growth Company Risk. Securities of growth companies can be more sensitive to the company’s earnings and more volatile than the market in general.

Brown Advisory Sustainable International Leaders Fund | Investments in Other Investment Companies Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable International Leaders Fund | Large Capitalization Company Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

sometimes unable to attain the high growth rates of successful, smaller companies, especially during extended periods of economic expansion.

Brown Advisory Sustainable International Leaders Fund | Liquidity Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

•Liquidity Risk. Certain securities held by the Fund may be difficult (or impossible) to sell at the time and at the price the Fund would like. As a result, the Fund may have to hold these securities longer than it would like and may forego other investment opportunities. There is the possibility that the Fund may lose money or be prevented from realizing capital gains if it cannot sell a security at a particular time and price.

Brown Advisory Sustainable International Leaders Fund | Management Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

•Management Risk. The Fund may not meet its investment objective based on the Sub-Adviser’s success or failure to implement investment strategies for the Fund.

Brown Advisory Sustainable International Leaders Fund | Medium Capitalization Company Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Medium Capitalization Company Risk. Securities of medium-sized companies held by the Fund may be more volatile and more difficult to liquidate during market down turns than securities of larger companies. Additionally the price of medium-sized companies may decline more in response to selling pressures.

Brown Advisory Sustainable International Leaders Fund | New Fund Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

New Fund Risk. The Fund is new with a limited operating history and there can be no assurance that the Fund will grow to or maintain an economically viable size.

Brown Advisory Sustainable International Leaders Fund | Private Placement Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable International Leaders Fund | REIT And Real Estate Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable International Leaders Fund | Sustainable Investing Policy Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable International Leaders Fund | U.S. Government Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable International Leaders Fund | Valuation Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Valuation Risk. The prices provided by pricing services or independent dealers or the fair value determinations made by the Sub-Adviser may be different from the prices used by other mutual funds or from the prices at which securities are actually bought and sold. The prices of certain securities provided by pricing services may be subject to frequent and significant change, and will vary depending on the information that is available.

Brown Advisory Sustainable International Leaders Fund | Value Company Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable International Leaders Fund | MSCI ACWI ex USA Index (reflects no deduction for fees, expenses and taxes)

Prospectus [Line Items]

rr_ProspectusLineItems

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses and taxes)

Label

rr_AverageAnnualReturnLabel

MSCI ACWI ex USA Index (reflects no deduction for fees, expenses and taxes)

1 Year

rr_AverageAnnualReturnYear01

15.62%

Since Inception

rr_AverageAnnualReturnSinceInception

1.55%

Inception Date

rr_AverageAnnualReturnInceptionDate

Feb. 28, 2022

Brown Advisory Sustainable International Leaders Fund | Institutional Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BAILX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.75%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

none

Other Expenses

rr_Component2OtherExpensesOverAssets

0.43%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[11]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

1.19%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.33%)

^[12]

Net Expenses (as a percentage of Assets)

rr_NetExpensesOverAssets

0.86%

^[12]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 88

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

345

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

623

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,414

1 Year

rr_AverageAnnualReturnYear01

15.97%

Since Inception

rr_AverageAnnualReturnSinceInception

2.99%

Inception Date

rr_AverageAnnualReturnInceptionDate

Feb. 28, 2022

Brown Advisory Sustainable International Leaders Fund | Investor Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BISLX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.75%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.15%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.43%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[11]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

1.34%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.33%)

^[12]

Net Expenses (as a percentage of Assets)

rr_NetExpensesOverAssets

1.01%

^[12]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 103

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

392

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

703

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,584

Annual Return 2023

rr_AnnualReturn2023

15.76%

1 Year

rr_AverageAnnualReturnYear01

15.76%

Since Inception

rr_AverageAnnualReturnSinceInception

2.76%

Inception Date

rr_AverageAnnualReturnInceptionDate

Feb. 28, 2022

Brown Advisory Sustainable International Leaders Fund | Investor Shares | After Taxes on Distributions

Prospectus [Line Items]

rr_ProspectusLineItems

1 Year

rr_AverageAnnualReturnYear01

15.78%

Since Inception

rr_AverageAnnualReturnSinceInception

2.77%

Brown Advisory Sustainable International Leaders Fund | Investor Shares | After Taxes on Distributions and Sales

Prospectus [Line Items]

rr_ProspectusLineItems

1 Year

rr_AverageAnnualReturnYear01

9.52%

Since Inception

rr_AverageAnnualReturnSinceInception

2.19%

Brown Advisory Sustainable International Leaders Fund | Advisor Class

Prospectus [Line Items]

rr_ProspectusLineItems

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.75%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.15%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.43%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[11]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

1.59%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.33%)

^[12]

Net Expenses (as a percentage of Assets)

rr_NetExpensesOverAssets

1.26%

^[12]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 128

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

470

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

835

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,861

Brown Advisory Intermediate Income Fund

Prospectus [Line Items]

rr_ProspectusLineItems

Risk/Return [Heading]

rr_RiskReturnHeading

Brown Advisory Intermediate Income Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Brown Advisory Intermediate Income Fund (the “Fund”) seeks to provide a high level of current income consistent with preservation of principal within an intermediate-term maturity structure.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses(expenses that you pay each year as a percentage of the value of your investment)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

27.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Acquired Fund Fees and Expenses are indirect fees and expenses that the Fund incurs from investing in the shares of other mutual funds, including money market funds and exchange traded funds. Please note that the amount of Total Annual Fund Operating Expenses shown in the above table will differ from the “Financial Highlights” section of the Prospectus which reflects the operating expenses of the Fund and does not include indirect expenses such as Acquired Fund Fees and Expenses.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal conditions, the Adviser seeks to achieve the Fund’s investment objective by investing at least 80% of the value of its net assets (plus any borrowings for investment purposes) in fixed income securities such as U.S Government securities, corporate fixed income securities, mortgage-backed and asset-backed securities. The fixed income securities in which the Fund may invest may also include municipal securities issued by states, U.S. territories, and possessions, general obligation securities and revenue securities. The foregoing may include municipal lease obligations and insured municipal securities. The Fund may also invest in other investment companies that invest in similar fixed income securities and the Fund may count such holdings towards the Fund’s 80% investment policy.

The Fund invests in fixed income securities that primarily have a maturity that is between 1 and 10 years and are rated in the top four rating categories of a Nationally Recognized Statistical Rating Organization, or unrated and deemed to be of comparable quality by the Adviser. Under normal circumstances, the Fund’s portfolio will have an average dollar weighted maturity between 3 and 10 years and an average duration of 2 to 5 years. Duration is a measurement of price sensitivity to interest rate changes.

The Fund may invest in derivatives instruments, such as options, futures contracts, including interest rate futures, and options on futures. These investments will typically be made for investment purposes consistent with the Fund’s investment objective and may also be used to mitigate or hedge risks within the portfolio or for the temporary investment of cash balances. These derivative instruments will be counted toward the Fund’s 80% policy to the extent they have economic characteristics similar to the securities included within that policy. The Fund intends to use the mark-to-market value of such derivatives for purposes of complying with the Fund’s 80% investment policy.

The Adviser may sell a fixed income security or reduce its position if:

• Revised economic forecasts or interest rate outlook requires a repositioning of the portfolio;

• The security subsequently fails to meet the investment criteria;

• A more attractive security is found; or

• The Adviser believes that the security has reached its appreciation potential.

Strategy Portfolio Concentration [Text]

rr_StrategyPortfolioConcentration

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The following performance information provides some indication of the risks of investing in the Fund. The chart shows changes in the Fund’s performance of Investor Shares from year-to-year. The table shows how the average annual returns of Investor Shares and Advisor Shares for 1 year, 5 year, and 10 year periods compare to the Fund's primary broad-based market index and a secondary index provided to offer additional market perspective. In accordance with new regulatory requirements, the Fund has selected the Bloomberg U.S. Aggregate Bond Index as the Fund’s new primary benchmark. The Fund’s former primary benchmark, the Bloomberg Intermediate U.S. Aggregate Bond Index, is also included for comparison.

Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results. Updated performance information is available online at www.brownadvisory.com/mf/intermediate-income-fund or by calling 800‑540‑6807 (toll free).

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The following performance information provides some indication of the risks of investing in the Fund.

Performance Additional Market Index [Text]

rr_PerformanceAdditionalMarketIndex

The table shows how the average annual returns of Investor Shares and Advisor Shares for 1 year, 5 year, and 10 year periods compare to the Fund's primary broad-based market index and a secondary index provided to offer additional market perspective.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

800‑540‑6807

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.brownadvisory.com/mf/intermediate-income-fund

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results.

Bar Chart [Heading]

rr_BarChartHeading

Brown Advisory Intermediate Income Fund – Investor Shares Annual Total Returns

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

The Fund’s calendar year-to-date total return as of September 30, 2024 was 4.45%. During the periods shown in the chart, the highest quarterly return was 5.61% (for the quarter ended June 30, 2020) and the lowest quarterly return was -4.22% (for the quarter ended March 31, 2022).

Year to Date Return, Label

rr_YearToDateReturnLabel

year-to-date total return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2024

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

4.45%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

highest quarterly return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2020

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

5.61%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

lowest quarterly return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Mar. 31, 2022

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(4.22%)

Performance Table Heading

rr_PerformanceTableHeading

Brown Advisory Intermediate Income Fund Average Annual Total Returns

Performance Table Market Index Changed

rr_PerformanceTableMarketIndexChanged

In accordance with new regulatory requirements, the Fund has selected the Bloomberg U.S. Aggregate Bond Index as the Fund’s new primary benchmark. The Fund’s former primary benchmark, the Bloomberg Intermediate U.S. Aggregate Bond Index, is also included for comparison.

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

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.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

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.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown for Investor Shares only. After-tax returns for Advisor Shares will vary.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

Brown Advisory Intermediate Income Fund | Risk Lose Money [Member]

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

As with all mutual funds, there is the risk that you could lose all or a portion of your investment in the Fund.

Brown Advisory Intermediate Income Fund | Risk Not Insured Depository Institution [Member]

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Brown Advisory Intermediate Income Fund | Credit Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Credit Risk. The value of your investment in the Fund may change in response to changes in the credit ratings of the Fund’s portfolio securities. Generally, investment risk and price volatility increase as a security’s credit rating declines. The financial condition of an issuer of a fixed income security held by a Fund may cause it to default or become unable or unwilling, or is perceived (whether by market participants, ratings agencies, pricing services or otherwise) as unable or unwilling to pay interest or principal due on the security.

Brown Advisory Intermediate Income Fund | Debt/Fixed Income Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Intermediate Income Fund | Derivatives Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Intermediate Income Fund | Interest Rate Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Interest Rate Risk. An increase in interest rates (or the expectation of an increase) typically causes a fall in the value of the fixed income securities in which the Fund may invest. The Federal Reserve has raised interest rates over recent periods and may continue to raise interest rates. In addition, changes in monetary policy may exacerbate the risks associated with changing interest rates. Interest rate increases may negatively impact the Fund’s performance or otherwise adversely impact the Fund.

Brown Advisory Intermediate Income Fund | Investments in Other Investment Companies Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Investments in Other Investment Companies Risk. Shareholders of the Fund will indirectly be subject to the fees and expenses of the other investment companies (principally, the Brown Advisory Mortgage Securities Fund) in which the Fund invests, and these fees and expenses are in addition to the fees and expenses that Fund shareholders directly bear in connection with the Fund’s own operations. In addition, shareholders will be exposed to the investment risks associated with investments in the other investment companies.

Brown Advisory Intermediate Income Fund | Liquidity Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Intermediate Income Fund | Management Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Management Risk. The Fund may not meet its investment objective based on the Adviser’s success or failure to implement investment strategies for the Fund.

Brown Advisory Intermediate Income Fund | Mortgage- And Asset-Backed Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Mortgage- and Asset-Backed Securities Risk. The Fund may invest in mortgage- and asset-backed securities, which represent “pools” of mortgages or other assets, including consumer loans or receivables held in trust. In a period of rising interest rates, these securities may exhibit additional volatility.

Brown Advisory Intermediate Income Fund | Municipal Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

may invest may be guaranteed or insured by a monoline insurance company or other financial institution. If a company insuring municipal securities in which the Fund invests experiences financial difficulties, the credit rating and price of the security may deteriorate. The Fund may invest more heavily in bonds from certain cities, states or regions than others, which may increase the Fund’s exposure to losses resulting from economic, social, public health, political, environmental or regulatory occurrences impacting these particular cities, states or regions.

Brown Advisory Intermediate Income Fund | Prepayment/Extension Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Prepayment/Extension Risk. Issuers may experience an acceleration in prepayments of mortgage loans or other receivables backing the issuers’ fixed income securities when interest rates decline, which can shorten the maturity of the security, force the Fund to invest in securities with lower interest rates, and reduce the Fund’s return. Issuers may decrease prepayments of principal when interest rates increase, extending the maturity of a fixed income security and causing the value of the security to decline.

Brown Advisory Intermediate Income Fund | Private Placement Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Intermediate Income Fund | Rating Agencies Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Rating Agencies Risk. Ratings are not an absolute standard of quality, but rather general indicators that reflect only the view of the originating rating agencies from which an explanation of the significance of such ratings may be obtained. There is no assurance that a particular rating will continue for any given period of time or that any such rating will not be revised downward or withdrawn entirely if, in the judgment of the agency establishing the rating, circumstances so warrant. A downward revision or withdrawal of such ratings, or either of them, may have an effect on the liquidity or market price of the securities in which the Fund invests. The ratings of securitized assets may not adequately reflect the credit risk of those assets due to their structure.

Brown Advisory Intermediate Income Fund | U.S. Government Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

•U.S. Government Securities Risk. Although the Fund’s U.S. Government securities are considered to be among the safest investments, they are not guaranteed against price movements due to changing interest rates. Some obligations issued or guaranteed by U.S. Government agencies and instrumentalities, including, for example, Ginnie Mae pass-through certificates, are supported by the full faith and credit of the U.S. Treasury. Other obligations issued by or guaranteed by federal agencies, such as those securities issued by Fannie Mae, are supported by the discretionary authority of the U.S. Government to purchase certain obligations of the federal agency, while other obligations issued by or guaranteed by federal agencies, such as those of the Federal Home Loan Banks, are supported by the right of the issuer to borrow from the U.S. Treasury. While the U.S. Government provides financial support to such U.S. Government-sponsored federal agencies, no assurance can be given that the U.S. Government will always do so, since the U.S. Government is not so obligated by law. U.S. government securities not backed by the full faith and credit of the U.S. government involve credit risk that is greater than other types of U.S. government securities.

Brown Advisory Intermediate Income Fund | Bloomberg Intermediate US Aggregate Bond Index (reflects no deduction for fees, expenses and taxes)

Prospectus [Line Items]

rr_ProspectusLineItems

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses and taxes)

Label

rr_AverageAnnualReturnLabel

Bloomberg Intermediate U.S. Aggregate Bond Index (reflects no deduction for fees, expenses and taxes)

1 Year

rr_AverageAnnualReturnYear01

5.18%

5 Years

rr_AverageAnnualReturnYear05

1.14%

10 Years

rr_AverageAnnualReturnYear10

1.62%

Brown Advisory Intermediate Income Fund | Bloomberg US Aggregate Bond Index (reflects no deduction for fees, expenses and taxes)

Prospectus [Line Items]

rr_ProspectusLineItems

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses and taxes)

Label

rr_AverageAnnualReturnLabel

Bloomberg U.S. Aggregate Bond Index(reflects no deduction for fees, expenses and taxes)

1 Year

rr_AverageAnnualReturnYear01

5.53%

5 Years

rr_AverageAnnualReturnYear05

1.10%

10 Years

rr_AverageAnnualReturnYear10

1.81%

Brown Advisory Intermediate Income Fund | Institutional Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.30%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

none

Other Expenses

rr_Component2OtherExpensesOverAssets

0.18%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.06%

^[13]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.54%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.04%)

^[14]

Net Expenses (as a percentage of Assets)

rr_NetExpensesOverAssets

0.50%

^[14]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 51

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

160

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

280

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 628

Brown Advisory Intermediate Income Fund | Investor Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BIAIX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.30%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.05%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.18%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.06%

^[13]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.59%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.04%)

^[14]

Net Expenses (as a percentage of Assets)

rr_NetExpensesOverAssets

0.55%

^[14]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 56

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

176

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

307

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 689

Annual Return 2014

rr_AnnualReturn2014

3.67%

Annual Return 2015

rr_AnnualReturn2015

0.68%

Annual Return 2016

rr_AnnualReturn2016

2.24%

Annual Return 2017

rr_AnnualReturn2017

2.39%

Annual Return 2018

rr_AnnualReturn2018

0.41%

Annual Return 2019

rr_AnnualReturn2019

6.85%

Annual Return 2020

rr_AnnualReturn2020

5.42%

Annual Return 2021

rr_AnnualReturn2021

(1.20%)

Annual Return 2022

rr_AnnualReturn2022

(9.39%)

Annual Return 2023

rr_AnnualReturn2023

4.19%

Label

rr_AverageAnnualReturnLabel

–Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

4.19%

5 Years

rr_AverageAnnualReturnYear05

0.99%

10 Years

rr_AverageAnnualReturnYear10

1.43%

Brown Advisory Intermediate Income Fund | Investor Shares | After Taxes on Distributions

Prospectus [Line Items]

rr_ProspectusLineItems

Label

rr_AverageAnnualReturnLabel

–Return After Taxes on Distributions

1 Year

rr_AverageAnnualReturnYear01

2.94%

5 Years

rr_AverageAnnualReturnYear05

0.11%

10 Years

rr_AverageAnnualReturnYear10

0.52%

Brown Advisory Intermediate Income Fund | Investor Shares | After Taxes on Distributions and Sales

Prospectus [Line Items]

rr_ProspectusLineItems

Label

rr_AverageAnnualReturnLabel

–Return After Taxes on Distributions and Sale of Fund Shares

1 Year

rr_AverageAnnualReturnYear01

2.46%

5 Years

rr_AverageAnnualReturnYear05

0.41%

10 Years

rr_AverageAnnualReturnYear10

0.71%

Brown Advisory Intermediate Income Fund | Advisor Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BAIAX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.30%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.05%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.18%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.06%

^[13]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.84%

Fee Waiver or Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.04%)

^[14]

Net Expenses (as a percentage of Assets)

rr_NetExpensesOverAssets

0.80%

^[14]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 82

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

255

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

444

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 990

Label

rr_AverageAnnualReturnLabel

–Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

4.03%

5 Years

rr_AverageAnnualReturnYear05

0.74%

10 Years

rr_AverageAnnualReturnYear10

1.18%

Brown Advisory Sustainable Bond Fund

Prospectus [Line Items]

rr_ProspectusLineItems

Risk/Return [Heading]

rr_RiskReturnHeading

Brown Advisory Sustainable Bond Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Brown Advisory Sustainable Bond Fund (the “Fund”) seeks to provide a competitive total return consistent with preservation of principal while giving special consideration to certain sustainable investment criteria.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses(expenses that you pay each year as a percentage of the value of your investment)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

account. These costs, which are not reflected in annual fund operating expenses or in the Example, affect the Fund’s performance. During the most recent fiscal year, the portfolio turnover rate for the Fund was 251% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

251.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Acquired Fund Fees and Expenses are indirect fees and expenses that the Fund incurs from investing in the shares of other mutual funds, including money market funds and exchange traded funds. Please note that the amount of Total Annual Fund Operating Expenses shown in the above table will differ from the “Financial Highlights” section of the Prospectus which reflects the operating expenses of the Fund and does not include indirect expenses such as Acquired Fund Fees and Expenses.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal conditions, Brown Advisory LLC (the “Adviser”) seeks to achieve the Fund’s investment objective by investing at least 80% of the value of its net assets (plus any borrowings for investment purposes) in either fixed income securities of issuers that satisfy the Fund’s sustainable investment criteria or in securities where the use of the proceeds satisfy the Fund’s sustainable investment criteria, together, the “Investment Criteria” for the Fund. This 80% investment policy is non-fundamental and may be changed without the vote of shareholders. Shareholders will receive 60 days’ prior written notice of any changes to the Fund’s 80% investment policy. The Fund may invest in corporate fixed income securities, mortgage-backed and asset-backed securities, U.S Government securities and securities issued by foreign entities including foreign-sponsored governmental agencies. The fixed income securities in which the Fund may invest may also include municipal securities issued by states, U.S. territories and possessions, general obligation securities and revenue securities. The foregoing may include municipal lease obligations and insured municipal securities. The Fund may also invest in other investment companies that invest in similar fixed income securities and the Fund may count such holdings towards the Fund’s 80% investment policy. The Fund may also engage in “To Be Announced” transactions. Certain of the fixed income securities that the Fund may invest in are often commonly referred to as “labeled bonds.” Labeled bonds include, but are not limited to, “Green Bonds,” “Social Bonds,” “Sustainability Bonds,” or “Sustainability-Linked Bonds.”

The Fund invests in fixed income securities that primarily have a maturity that is between 0 and 30 years and are rated in the top four rating categories of a Nationally Recognized Statistical Rating Organization, or unrated and deemed to be of comparable quality by the Adviser. Under normal circumstances, the Fund’s portfolio will have an average dollar weighted maturity between 6 and 11 years and an average duration of 3 to 7 years. Duration is a measurement of price sensitivity to interest rate changes.

The Fund may invest up to 20% of its assets in high-yield securities (“junk bonds”), which are speculative in nature. The Fund may invest in securities denominated in non-U.S. currencies. The Fund may also invest in bank loans.

The Fund may invest in derivatives instruments, such as options, currency forwards, futures contracts, including interest rate futures, options on futures, interest rate swaps and credit default swaps. These investments will typically be made for investment purposes consistent with the Fund’s investment objective and may also be used to mitigate or hedge risks within the portfolio or for the temporary investment of cash balances. These positions may also be used to manage interest rate risk or to create synthetic exposure to particular credits. Investments in derivatives may be counted towards the Fund’s 80% investment policy if they have economic characteristics similar to the other investments that are included in the Fund’s 80% investment policy. The Fund intends to use the mark-to-market value of such derivatives for purposes of complying with the Fund’s 80% investment policy.

The Adviser utilizes sustainable investment analysis in connection with the Fund's investments in fixed income securities. As part of the research approach, the Adviser has a process to integrate, identify and consider the sustainable investment related risks and opportunities using a sustainable investment research assessment. The assessment may be conducted at the sector, issuer, shelf or security level. Not every investment will be covered at the issuer or security level. The Fund has access to this research and considers relevant sustainability issues. However, at the Adviser’s discretion, the Fund is permitted to make an investment without a written sustainable investment research assessment on file at the time of purchase, as long as the Adviser believes the security meets the Fund’s sustainable investment criteria.

The Fund’s sustainable investment criteria considers many factors including, but not limited to, any one or more of the following: clean and renewable energy, climate change and water conservation, waste management, natural resource stewardship, innovative efficiency solutions, labor management, community relations, supply chain management, customer well-being, stewardship of debt and capital, board governance and transparency, and business ethics.

The outcomes of the Adviser’s research may result in positive environmental and social impacts. While not a thematic fund, the nature of the Adviser’s research considers sustainable investment themes, such as any one or more of sustainable technology innovation, accessibility of essential services like healthcare, financial inclusion, and climate mitigation.

The Adviser pursues strategic engagement with issuers and other stakeholders in an effort to enhance due diligence and monitor the investment thesis.

Strategy Portfolio Concentration [Text]

rr_StrategyPortfolioConcentration

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results. Updated performance information is available online at www.brownadvisory.com/mf/sustainable-bond-fund or by calling 800‑540‑6807 (toll free).

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The following performance information provides some indication of the risks of investing in the Fund.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

800‑540‑6807

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.brownadvisory.com/mf/sustainable-bond-fund

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results.

Bar Chart [Heading]

rr_BarChartHeading

Brown Advisory Sustainable Bond Fund – Investor Shares Annual Total Returns

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

The Fund’s calendar year-to-date total return as of September 30, 2024 was 4.18%. During the period shown in the chart, the highest quarterly return was 6.54% (for the quarter ended June 30, 2020) and the lowest quarterly return was -5.14% (for the quarter ended March 31, 2022).

Year to Date Return, Label

rr_YearToDateReturnLabel

year-to-date total return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2024

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

4.18%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

highest quarterly return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2020

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

6.54%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

lowest quarterly return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Mar. 31, 2022

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(5.14%)

Performance Table Heading

rr_PerformanceTableHeading

Brown Advisory Sustainable Bond Fund Average Annual Total Returns

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

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.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

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.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown for Investor Shares only. After-tax returns for Institutional Shares will vary.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Performance Table Footnotes, Reason Performance Information for Class Different from Immediately Preceding Period [Text]

rr_PerformanceTableFootnotesReasonPerformanceInformationForClassDifferentFromImmediatelyPrecedingPeriod

Performance shown prior to inception of the Institutional Shares is based on the performance of Investor Shares, adjusted for the lower expenses applicable to Institutional Shares.

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

NOTE: The Sustainable Bond Fund offers two classes of shares. Investor Shares commenced operations on August 7, 2017, and Institutional Shares commenced operations on July 2, 2018. Performance shown prior to inception of the Institutional Shares is based on the performance of Investor Shares, adjusted for the lower expenses applicable to Institutional Shares.

Brown Advisory Sustainable Bond Fund | Risk Lose Money [Member]

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

As with all mutual funds, there is the risk that you could lose all or a portion of your investment in the Fund.

Brown Advisory Sustainable Bond Fund | Risk Not Insured Depository Institution [Member]

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Brown Advisory Sustainable Bond Fund | Credit Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Credit Risk. The value of your investment in the Fund may change in response to changes in the credit ratings of the Fund’s portfolio securities. Generally, investment risk and price volatility increase as a security’s credit rating declines. The financial condition of an issuer of a fixed income security held by the Fund may cause it to default or become unable or unwilling, or is perceived (whether by market participants, ratings agencies, pricing services or otherwise) as unable or unwilling to pay interest or principal due on the security.

Brown Advisory Sustainable Bond Fund | Currency And Exchange Rate Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable Bond Fund | Debt/Fixed Income Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable Bond Fund | Derivatives Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable Bond Fund | Foreign Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

certain foreign markets that have historically been considered stable may become more volatile and subject to increased risk due to ongoing developments and changing conditions in such markets. The value of the Fund’s foreign investments may also be affected by foreign tax laws, special U.S. tax considerations and restrictions on receiving the investment proceeds from a foreign country. Dividends or interest on, or proceeds from the sale or disposition of, foreign securities may be subject to non-U.S. withholding or other taxes. Economic sanctions could, among other things, effectively restrict or eliminate the Fund’s ability to purchase or sell securities or groups of securities for a substantial period of time, and may make the Fund’s investments in such securities harder to value.

Brown Advisory Sustainable Bond Fund | Interest Rate Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Interest Rate Risk. An increase (or the expectation of an increase) in interest rates typically causes a fall in the value of the fixed income securities in which the Fund may invest. The Federal Reserve has increased interest rates at significant levels over recent periods. In addition, changes in monetary policy may exacerbate the risks associated with changing interest rates. Interest rate increases may negatively impact the Fund’s performance or otherwise adversely impact the Fund.

Brown Advisory Sustainable Bond Fund | Investments in Other Investment Companies Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable Bond Fund | Liquidity Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Liquidity Risk. Certain fixed income securities held by the Fund may be difficult (or impossible) to sell at the time and at the price the Adviser would like. As a result, the Fund may have to hold these securities longer than it would like and may forego other investment opportunities. There is the possibility that the Fund may lose money or be prevented from realizing capital gains if it cannot sell a security at a particular time and price.

Brown Advisory Sustainable Bond Fund | Management Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Management Risk. The Fund may not meet its investment objective based on the Adviser’s success or failure to implement investment strategies for the Fund.

Brown Advisory Sustainable Bond Fund | Market Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Market Risk. The portfolio securities held by the Fund are susceptible to general market fluctuations and to volatile increases and decreases in value. The securities markets may experience declines and the portfolio holdings in the Fund’s portfolio may not increase their earnings at the rate anticipated. The Fund’s NAV and investment return will fluctuate based upon changes in the value of its portfolio securities.

Brown Advisory Sustainable Bond Fund | Mortgage- And Asset-Backed Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable Bond Fund | Municipal Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Municipal Securities Risk. Adverse economic or political factors in the municipal bond market, including changes in the tax law, could impact the Fund in a negative manner.

Brown Advisory Sustainable Bond Fund | Non-Investment Grade ("Junk Bond") Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Non-Investment Grade (“Junk Bond”) Securities Risk. Below investment grade debt securities (also known as “junk bonds”) are speculative and involve a greater risk of default and price change due to changes in the issuer’s creditworthiness. Junk bonds generally present additional risks compared to investment grade bonds and are typically less liquid, and therefore more difficult to value accurately or sell at an advantageous price or time and present more credit risk than investment grade securities. The market prices of these debt securities may fluctuate more than the market prices of investment grade debt securities and may decline significantly in periods of general economic difficulty.

Brown Advisory Sustainable Bond Fund | Portfolio Turnover Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Portfolio Turnover Risk. High portfolio turnover involves correspondingly greater expenses to a Fund, including brokerage commissions or dealer mark-ups and other transaction costs on the sale of securities and reinvestments in other securities. Higher portfolio turnover also may result in higher taxes when Fund shares are held in a taxable account.

Brown Advisory Sustainable Bond Fund | Prepayment/Extension Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable Bond Fund | Private Placement Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

•Private Placement Risk. The Fund may invest in privately issued securities of domestic common and preferred stock, convertible debt securities, ADRs and REITs, including those which may be resold only in accordance with Rule 144A under the Securities Act of 1933, as amended. Privately issued securities are restricted securities that are not publicly traded. Delay or difficulty in selling such securities may result in a loss to the Fund.

Brown Advisory Sustainable Bond Fund | Rating Agencies Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable Bond Fund | Sustainable Investing Policy Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable Bond Fund | To Be Announced (“TBA”) Transactions Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

To Be Announced (“TBA”) Transactions Risk. The Fund may enter into TBA transactions to purchase mortgage-related securities for a fixed price at a future date. TBA purchase commitments involve a risk of loss if the value of the security to be purchased declines prior to settlement date or if the counterparty does not deliver the securities as promised.

Brown Advisory Sustainable Bond Fund | U.S. Government Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable Bond Fund | Valuation Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Sustainable Bond Fund | Bloomberg US Aggregate Bond Index (reflects no deduction for fees, expenses and taxes)

Prospectus [Line Items]

rr_ProspectusLineItems

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses and taxes)

Label

rr_AverageAnnualReturnLabel

Bloomberg U.S. Aggregate Bond Index (reflects no deduction for fees, expenses and taxes)

1 Year

rr_AverageAnnualReturnYear01

5.53%

5 Years

rr_AverageAnnualReturnYear05

1.10%

Since Inception

rr_AverageAnnualReturnSinceInception

0.95%

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 07, 2017

Brown Advisory Sustainable Bond Fund | Institutional Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BAISX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.30%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

none

Other Expenses

rr_Component2OtherExpensesOverAssets

0.11%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.02%

^[15]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.43%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 44

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

138

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

241

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 542

Label

rr_AverageAnnualReturnLabel

–Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

3.47%

5 Years

rr_AverageAnnualReturnYear05

1.17%

Since Inception

rr_AverageAnnualReturnSinceInception

0.87%

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 07, 2017

Brown Advisory Sustainable Bond Fund | Investor Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BASBX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.30%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.05%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.11%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.02%

^[15]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.48%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 49

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

154

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

269

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 604

Annual Return 2018

rr_AnnualReturn2018

(0.57%)

Annual Return 2019

rr_AnnualReturn2019

8.90%

Annual Return 2020

rr_AnnualReturn2020

8.87%

Annual Return 2021

rr_AnnualReturn2021

(0.39%)

Annual Return 2022

rr_AnnualReturn2022

(13.45%)

Annual Return 2023

rr_AnnualReturn2023

3.41%

Label

rr_AverageAnnualReturnLabel

–Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

3.41%

5 Years

rr_AverageAnnualReturnYear05

1.12%

Since Inception

rr_AverageAnnualReturnSinceInception

0.82%

Inception Date

rr_AverageAnnualReturnInceptionDate

Aug. 07, 2017

Brown Advisory Sustainable Bond Fund | Investor Shares | After Taxes on Distributions

Prospectus [Line Items]

rr_ProspectusLineItems

Label

rr_AverageAnnualReturnLabel

–Return After Taxes on Distributions

1 Year

rr_AverageAnnualReturnYear01

1.86%

5 Years

rr_AverageAnnualReturnYear05

(0.13%)

Since Inception

rr_AverageAnnualReturnSinceInception

(0.36%)

Brown Advisory Sustainable Bond Fund | Investor Shares | After Taxes on Distributions and Sales

Prospectus [Line Items]

rr_ProspectusLineItems

Label

rr_AverageAnnualReturnLabel

–Return After Taxes on Distributions and Sale of Fund Shares

1 Year

rr_AverageAnnualReturnYear01

1.99%

5 Years

rr_AverageAnnualReturnYear05

0.42%

Since Inception

rr_AverageAnnualReturnSinceInception

0.19%

Brown Advisory Sustainable Bond Fund | Advisor Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.30%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.05%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.11%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.02%

^[15]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.73%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 75

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

233

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

406

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 906

Brown Advisory Maryland Bond Fund

Prospectus [Line Items]

rr_ProspectusLineItems

Risk/Return [Heading]

rr_RiskReturnHeading

Brown Advisory Maryland Bond Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Brown Advisory Maryland Bond Fund (the “Fund”) seeks to provide a high level of current income exempt from both Federal and Maryland State income taxes without undue risk.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses(expenses that you pay each year as a percentage of the value of your investment)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

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Portfolio Turnover, Rate

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22.00%

Expense Example [Heading]

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Example

Expense Example Narrative [Text Block]

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Expense Example by, Year, Caption [Text]

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Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

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Principal Investment Strategies

Strategy Narrative [Text Block]

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Under normal conditions, Brown Advisory LLC (the “Adviser”) seeks to achieve the Fund’s investment objective by investing at least 80% of the value of its net assets (plus any borrowings for investment purposes) in Maryland bonds, including bonds issued on behalf of the State of Maryland, its local governments and public financing authorities. This 80% policy cannot be changed without shareholder approval. The Fund may also invest in municipal securities issued by other states, U.S. territories, and possessions, U.S. Government securities, general obligation securities and revenue securities, including private activity bonds. The Adviser determines which securities to purchase by first evaluating whether a security falls within the credit guidelines set for the Fund by reviewing the ratings given by a Nationally Recognized Statistical Rating Organization (an “NRSRO”). The Adviser then determines the appropriate maturity date and coupon choice after analyzing the current and targeted portfolio structure, and whether or not the issue is fairly priced. The Fund is non-diversified which means that it may invest a significant portion of its assets in the securities of a single issuer or small number of issuers. Generally, the average weighted effective maturity of the Fund’s portfolio securities will be between 4 and 10 years. Normally, the Fund will invest at least 80% of its net assets in securities the interest of which is exempt from Federal and Maryland State income taxes, although such interest may be subject to the Federal alternative minimum tax (“AMT”). All capital gains are subject to Federal and state taxes. Municipal securities include municipal bonds, notes, and leases. Municipal leases are securities that permit government issuers to acquire property and equipment without the security being subject to constitutional and statutory requirements for the issuance of long-term fixed income securities.

The Adviser may sell a fixed income security or reduce its position if:

•Revised economic forecasts or interest rate outlook requires a repositioning of the portfolio;

•The security subsequently fails to meet the investment criteria;

•A more attractive security is found; or

•The Adviser believes that the security has reached its appreciated potential.

Strategy Portfolio Concentration [Text]

rr_StrategyPortfolioConcentration

Normally, the Fund will invest at least 80% of its net assets in securities the interest of which is exempt from Federal and Maryland State income taxes, although such interest may be subject to the Federal alternative minimum tax (“AMT”).

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Bar Chart and Performance Table [Heading]

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Performance Information

Performance Narrative [Text Block]

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The following performance information provides some indication of the risks of investing in the Fund. The chart shows changes in the Fund’s performance of Investor Shares from year-to-year. The table shows how the average annual returns of Investor Shares for 1 year, 5 year, and 10 year periods compare to the Fund's primary broad-based market index and a secondary index provided to offer additional market perspective. In accordance with new regulatory requirements, the Fund has selected the Bloomberg Municipal Bond Index as the Fund’s new primary benchmark. The Fund’s former primary benchmark, the Bloomberg 1-10 Year Blended Municipal Bond Index, is also included for comparison.

Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results. Updated performance information is available online at www.brownadvisory.com/mf/maryland-bond-fund or by calling 800‑540‑6807 (toll free).

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The following performance information provides some indication of the risks of investing in the Fund.

Performance Additional Market Index [Text]

rr_PerformanceAdditionalMarketIndex

The table shows how the average annual returns of Investor Shares for 1 year, 5 year, and 10 year periods compare to the Fund's primary broad-based market index and a secondary index provided to offer additional market perspective.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

800‑540‑6807

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.brownadvisory.com/mf/maryland-bond-fund

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results.

Bar Chart [Heading]

rr_BarChartHeading

Brown Advisory Maryland Bond Fund – Investor Shares Annual Total Returns

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

The Fund’s calendar year-to-date total return as of September 30, 2024 was 2.83%. During the periods shown in the chart, the highest quarterly return was 6.13% (for the quarter ended December 31, 2023) and the lowest quarterly return was -5.51% (for the quarter ended March 31, 2022).

Year to Date Return, Label

rr_YearToDateReturnLabel

year-to-date total return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2024

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

2.83%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

highest quarterly return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Dec. 31, 2023

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

6.13%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

lowest quarterly return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Mar. 31, 2022

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(5.51%)

Performance Table Heading

rr_PerformanceTableHeading

Brown Advisory Maryland Bond Fund Average Annual Total Returns

Performance Table Market Index Changed

rr_PerformanceTableMarketIndexChanged

In accordance with new regulatory requirements, the Fund has selected the Bloomberg Municipal Bond Index as the Fund’s new primary benchmark. The Fund’s former primary benchmark, the Bloomberg 1-10 Year Blended Municipal Bond Index, is also included for comparison.

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

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.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

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.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Performance Table Closing [Text Block]

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return figures for the same period, since a higher after-tax return results when a capital loss occurs upon redemption and provides an assumed tax deduction that benefits the investor. 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.

Brown Advisory Maryland Bond Fund | Risk Lose Money [Member]

Prospectus [Line Items]

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Risk [Text Block]

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As with all mutual funds, there is the risk that you could lose all or a portion of your investment in the Fund.

Brown Advisory Maryland Bond Fund | Risk Not Insured Depository Institution [Member]

Prospectus [Line Items]

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Risk [Text Block]

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An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Brown Advisory Maryland Bond Fund | Credit Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory Maryland Bond Fund | Debt/Fixed Income Securities Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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ratings of the Fund’s portfolio of debt securities. Moreover, rising interest rates or lack of market participants may lead to decreased liquidity in the bond and loan markets, making it more difficult for the Fund to sell its holdings at a time when the Fund’s manager might wish to sell. Lower rated securities (“junk bonds”) are generally subject to greater risk of loss of your money than higher rated securities. Issuers may (increase) decrease prepayments of principal when interest rates (fall) increase, affecting the maturity of the debt security and causing the value of the security to decline.

Brown Advisory Maryland Bond Fund | Derivatives Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory Maryland Bond Fund | Interest Rate Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory Maryland Bond Fund | Liquidity Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory Maryland Bond Fund | Management Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Management Risk. The Fund may not meet its investment objective based on the Adviser’s success or failure to implement investment strategies for the Fund.

Brown Advisory Maryland Bond Fund | Maryland Bonds And Municipal Securities Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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•Maryland Bonds and Municipal Securities Risk. Adverse economic or political factors in Maryland will affect the Fund’s NAV more than if the Fund invested in more geographically diverse investments. In addition, the State of Maryland and the State’s municipal issuers may also be adversely affected by the economic, social and health risks presented by the ongoing pandemic which could potentially produce a negative financial impact on the future economic fundamentals of issuers of Maryland municipal securities.

Brown Advisory Maryland Bond Fund | Municipal Securities Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Municipal Securities Risk. Adverse economic or political factors in the municipal bond market, including changes in the tax law, could impact the Fund in a negative manner.

Brown Advisory Maryland Bond Fund | Risk Nondiversified Status [Member]

Prospectus [Line Items]

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Risk [Text Block]

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Non-Diversification Risk. Investment by the Fund in securities of a limited number of issuers exposes the Fund to greater market risk and potential monetary losses than if its assets were diversified among the securities of a greater number of issuers.

Brown Advisory Maryland Bond Fund | Private Placement Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory Maryland Bond Fund | Tax Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Tax Risk. Municipal securities may decrease in value during times when tax rates are falling. The Fund’s investments are affected by changes in federal income tax rates applicable to, or the continuing federal tax-exempt status of, interest income on municipal obligations. Any proposed or actual changes in such rates or exempt status, therefore, can significantly affect the liquidity, marketability and supply and demand for municipal obligations, which would in turn affect the Fund’s ability to acquire and dispose of municipal obligations at desirable yield and price levels.

Brown Advisory Maryland Bond Fund | Valuation Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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•Valuation Risk. The prices provided by pricing services or independent dealers or the fair value determinations made by the Adviser may be different from the prices used by other mutual funds or from the prices at which securities are actually bought and sold. The prices of certain securities provided by pricing services may be subject to frequent and significant change, and will vary depending on the information that is available.

Brown Advisory Maryland Bond Fund | Bloomberg 1-10 Year Blended Municipal Bond Index (reflects no deduction for fees, expenses and taxes)

Prospectus [Line Items]

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Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses and taxes)

Label

rr_AverageAnnualReturnLabel

Bloomberg 1-10 Year Blended Municipal Bond Index (reflects no deduction for fees, expenses and taxes)

1 Year

rr_AverageAnnualReturnYear01

4.61%

5 Years

rr_AverageAnnualReturnYear05

1.96%

10 Years

rr_AverageAnnualReturnYear10

2.19%

Brown Advisory Maryland Bond Fund | Bloomberg Municipal Bond Index (reflects no deduction for fees, expenses and taxes)

Prospectus [Line Items]

rr_ProspectusLineItems

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses and taxes)

Label

rr_AverageAnnualReturnLabel

Bloomberg Municipal Bond Index(reflects no deduction for fees, expenses and taxes)

1 Year

rr_AverageAnnualReturnYear01

6.40%

5 Years

rr_AverageAnnualReturnYear05

2.25%

10 Years

rr_AverageAnnualReturnYear10

3.03%

Brown Advisory Maryland Bond Fund | Institutional Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.30%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

none

Other Expenses

rr_Component2OtherExpensesOverAssets

0.14%

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.44%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 45

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

141

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

246

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 555

Brown Advisory Maryland Bond Fund | Investor Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BIAMX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.30%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.05%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.14%

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.49%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 50

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

157

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

274

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 616

Annual Return 2014

rr_AnnualReturn2014

4.03%

Annual Return 2015

rr_AnnualReturn2015

1.66%

Annual Return 2016

rr_AnnualReturn2016

(0.07%)

Annual Return 2017

rr_AnnualReturn2017

3.91%

Annual Return 2018

rr_AnnualReturn2018

1.44%

Annual Return 2019

rr_AnnualReturn2019

6.70%

Annual Return 2020

rr_AnnualReturn2020

2.33%

Annual Return 2021

rr_AnnualReturn2021

1.62%

Annual Return 2022

rr_AnnualReturn2022

(7.58%)

Annual Return 2023

rr_AnnualReturn2023

5.74%

Label

rr_AverageAnnualReturnLabel

–Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

5.74%

5 Years

rr_AverageAnnualReturnYear05

1.63%

10 Years

rr_AverageAnnualReturnYear10

1.91%

Brown Advisory Maryland Bond Fund | Investor Shares | After Taxes on Distributions

Prospectus [Line Items]

rr_ProspectusLineItems

Label

rr_AverageAnnualReturnLabel

–Return After Taxes on Distributions

1 Year

rr_AverageAnnualReturnYear01

5.69%

5 Years

rr_AverageAnnualReturnYear05

1.61%

10 Years

rr_AverageAnnualReturnYear10

1.86%

Brown Advisory Maryland Bond Fund | Investor Shares | After Taxes on Distributions and Sales

Prospectus [Line Items]

rr_ProspectusLineItems

Label

rr_AverageAnnualReturnLabel

–Return After Taxes on Distributions and Sale of Fund Shares

1 Year

rr_AverageAnnualReturnYear01

4.61%

5 Years

rr_AverageAnnualReturnYear05

1.85%

10 Years

rr_AverageAnnualReturnYear10

2.00%

Brown Advisory Maryland Bond Fund | Advisor Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.30%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.05%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.14%

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.74%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 76

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

237

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

411

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 918

Brown Advisory Tax-Exempt Bond Fund

Prospectus [Line Items]

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Risk/Return [Heading]

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Brown Advisory Tax-Exempt Bond Fund

Objective [Heading]

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Investment Objective

Objective, Primary [Text Block]

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The Brown Advisory Tax-Exempt Bond Fund (the “Fund”) seeks to provide a high level of current income exempt from Federal income tax by investing primarily in intermediate-term investment grade municipal bonds.

Expense [Heading]

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Fees and Expenses

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses(expenses that you pay each year as a percentage of the value of your investment)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

performance. During the most recent fiscal year, the portfolio turnover rate for the Fund was 57% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

57.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

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Expense Example [Heading]

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Example

Expense Example Narrative [Text Block]

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Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

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Under normal circumstances, the Fund will invest at least 80% of the value of its net assets (plus any borrowings for investment purposes) in securities the interest of which is exempt from Federal income taxes and that do not subject shareholders to the federal alternative minimum tax (“AMT”). This 80% policy cannot be changed without shareholder approval. The Fund may invest up to 20% of its assets in securities that may fully subject shareholders to Federal income tax, including the AMT. In addition, all capital gains are subject to Federal and state taxes. The Fund may also invest more than 25% of its total assets in municipal bonds that are related in such a way that an economic, business or political development or change affecting one such security could also affect the other securities (for example, securities whose issuers are located in the same state).

Under normal conditions, Brown Advisory LLC (the “Adviser”) seeks to achieve the Fund’s investment objective by investing in municipal securities issued by states, U.S. territories, and possessions, U.S. Government securities, general obligation securities and revenue securities, including private activity bonds. Municipal securities include state and local general obligation bonds, essential service revenue issues (principally, water and sewer, transportation, public power, combined utilities and public universities), pre-refunded bonds and municipal leases. Municipal leases are securities that permit government issuers to acquire property and equipment without the security being subject to constitutional and statutory requirements for the issuance of long-term fixed income securities. To enhance yield, the Fund may also invest in selective enterprise revenue and/or private activity issues. The repayment of principal and interest on some of the municipal securities in which the Fund may invest may be guaranteed or insured by a monoline insurance company or other financial institution. The Fund also may invest in other investment companies, principally money market funds.

The Adviser determines which securities to purchase by first evaluating whether a security falls within the credit guidelines set for the Fund by reviewing the ratings given by a Nationally Recognized Statistical Rating Organization (an “NRSRO”). Under the credit guidelines, the Fund will hold at least 80% of its net assets in investment grade municipal debt securities, as rated by an NRSRO when purchased, or if unrated, determined by the Adviser to be of comparable quality. The credit guidelines provide that the Fund may also hold up to 20% of its total assets in securities rated below investment grade by an NRSRO or, if not rated, determined to be of equivalent quality by the Adviser. Securities that are rated below investment grade by NRSROs are commonly referred to as “junk bonds.” Such lower rated securities and other municipal securities may become illiquid due to events relating to the issuer of the securities, market events, economic conditions or investor perceptions. If NRSROs assign different ratings to the same security, the Fund will use the higher rating for purposes of determining the security’s credit quality.

The Adviser then determines the appropriate maturity date and coupon choice after analyzing the current and targeted portfolio structure, and whether or not the issue is fairly priced. Generally, the average weighted effective maturity of the Fund’s portfolio securities will be between 4 and 10 years.

In determining the municipal securities in which the Fund may invest, the Adviser will use a process for researching securities for purchase that is based on credit research and involves due diligence on each issuer, state, municipality and sector relating to a municipal security.

The Adviser may sell a security or reduce its position if:

•Revised economic forecasts or interest rate outlook requires a repositioning of the portfolio;

•The security subsequently fails to meet the investment criteria;

•A more attractive security is found; or

•The Adviser believes that the security has reached its appreciated potential.

Strategy Portfolio Concentration [Text]

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Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Bar Chart and Performance Table [Heading]

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Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The following performance information provides some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund’s performance of Investor Shares from year-to-year. The table shows how the average annual returns of the Investor Shares and Institutional Shares for the 1 year, 5 year, and 10 year periods compare to the Fund's primary broad-based market index and a secondary index provided to offer additional market perspective. In accordance with new regulatory requirements, the Fund has selected the Bloomberg Municipal Bond Index as the Fund’s new primary benchmark. The Fund’s former primary benchmark, the Bloomberg 1-10 Year Blended Municipal Bond Index, is also included for comparison.

Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results. Updated performance information is available online at www.brownadvisory.com/mf/tax-exempt-bond-fund or by calling 800‑540‑6807 (toll free).

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The following performance information provides some indication of the risks of investing in the Fund.

Performance Additional Market Index [Text]

rr_PerformanceAdditionalMarketIndex

The table shows how the average annual returns of the Investor Shares and Institutional Shares for the 1 year, 5 year, and 10 year periods compare to the Fund's primary broad-based market index and a secondary index provided to offer additional market perspective.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

800‑540‑6807

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.brownadvisory.com/mf/tax-exempt-bond-fund

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results.

Bar Chart [Heading]

rr_BarChartHeading

Brown Advisory Tax-Exempt Bond Fund – Investor Shares Annual Total Returns

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

The Fund’s calendar year-to-date total return as of September 30, 2024 was 3.25%. During the period shown in the chart, the highest quarterly return was 5.98% (for the quarter ended December 31, 2023) and the lowest quarterly return was -6.27% (for the quarter ended March 31, 2022).

Year to Date Return, Label

rr_YearToDateReturnLabel

year-to-date total return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2024

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

3.25%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

highest quarterly return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Dec. 31, 2023

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

5.98%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

lowest quarterly return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Mar. 31, 2022

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(6.27%)

Performance Table Heading

rr_PerformanceTableHeading

Brown Advisory Tax-Exempt Bond Fund Average Annual Total Returns

Performance Table Market Index Changed

rr_PerformanceTableMarketIndexChanged

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

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.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

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.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown for Investor Shares only. After-tax returns for Institutional Shares will vary.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Performance Table Footnotes, Reason Performance Information for Class Different from Immediately Preceding Period [Text]

rr_PerformanceTableFootnotesReasonPerformanceInformationForClassDifferentFromImmediatelyPrecedingPeriod

Performance shown prior to inception of the Institutional Shares is based on the performance of Investor Shares, adjusted for the lower expenses applicable to Institutional Shares.

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

NOTE: The Tax-Exempt Bond Fund offers two classes of shares. Investor Shares commenced operations on June 29, 2012, and Institutional Shares commenced operations on July 2, 2018. Performance shown prior to inception of the Institutional Shares is based on the performance of Investor Shares, adjusted for the lower expenses applicable to Institutional Shares.

Brown Advisory Tax-Exempt Bond Fund | Risk Lose Money [Member]

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

As with all mutual funds, there is the risk that you could lose all or a portion of your investment in the Fund.

Brown Advisory Tax-Exempt Bond Fund | Risk Not Insured Depository Institution [Member]

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Brown Advisory Tax-Exempt Bond Fund | Credit Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Credit Risk. The value of your investment in the Fund may change in response to changes in the credit ratings of the Fund’s portfolio securities. Individual issues of municipal obligations may be subject to the credit risk of the municipality. Therefore, the issuer may experience unanticipated financial problems and may be unable to meet its payment obligations. Municipal obligations held by the Fund may be adversely affected by political and economic conditions and developments (for example, legislation reducing federal and/or state aid to local governments). Generally, investment risk and price volatility increase as a security’s credit rating declines. Credit ratings are essentially opinions of the credit quality of an issuer and may prove to be inaccurate.

Brown Advisory Tax-Exempt Bond Fund | Debt/Fixed Income Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Tax-Exempt Bond Fund | Derivatives Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Tax-Exempt Bond Fund | Interest Rate Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Tax-Exempt Bond Fund | Investments in Other Investment Companies Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Investments in Other Investment Companies Risk. Shareholders of the Fund will indirectly be subject to the fees and expenses of the other investment companies (principally, money market funds) in which the Fund invests, and these fees and expenses are in addition to the fees and expenses that Fund shareholders directly bear in connection with the Fund’s own operations. In addition, shareholders will be exposed to the investment risks associated with investments in the other investment companies.

Brown Advisory Tax-Exempt Bond Fund | Liquidity Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Tax-Exempt Bond Fund | Management Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Management Risk. The Fund may not meet its investment objective based on the Adviser’s success or failure to implement investment strategies for the Fund.

Brown Advisory Tax-Exempt Bond Fund | Maturity Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Maturity Risk. Generally, a bond with a longer maturity will entail greater interest rate risk but have a higher yield. Conversely, a bond with a shorter maturity will entail less interest rate risk but have a lower yield.

Brown Advisory Tax-Exempt Bond Fund | Municipal Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Municipal Securities Risk. Changes in economic, business or political conditions relating to a particular state, or states, or type of projects may have a disproportionate impact on the Fund. Municipalities continue to experience difficulties in the current economic and political environment. National governmental actions, such as the elimination of tax-exempt status, also could affect performance. In addition, a municipality or municipal project that relies directly or indirectly on national governmental funding mechanisms may be negatively affected by the national government’s current budgetary constraints. Municipal obligations that the Fund may acquire include municipal lease obligations, which are issued by a state or local government or authority to acquire land and a wide variety of equipment and facilities. If the funds are not appropriated for the following year’s lease payments, then the lease may terminate, with the possibility of default on the lease obligation and significant loss to the Fund. The repayment of principal and interest on some of the municipal securities in which the Fund may invest may be guaranteed or insured by a monoline insurance company or other financial institution. If a company insuring municipal securities in which the Fund invests experiences financial difficulties, the credit rating and price of the security may deteriorate. The credit and quality of private activity bonds are usually related to the credit of the corporate user of the facilities and therefore such bonds are subject to the risks of the corporate user. The Fund may invest more heavily in bonds from certain cities, states or regions than others, which may increase the Fund’s exposure to losses resulting from economic, political, or regulatory occurrences impacting these particular cities, states or regions.

Brown Advisory Tax-Exempt Bond Fund | Private Placement Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Tax-Exempt Bond Fund | Tax Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Tax-Exempt Bond Fund | Valuation Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Tax-Exempt Bond Fund | Bloomberg 1-10 Year Blended Municipal Bond Index (reflects no deduction for fees, expenses and taxes)

Prospectus [Line Items]

rr_ProspectusLineItems

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses and taxes)

Label

rr_AverageAnnualReturnLabel

Bloomberg 1-10 Year Blended Municipal Bond Index (reflects no deduction for fees, expenses and taxes)

1 Year

rr_AverageAnnualReturnYear01

4.61%

5 Years

rr_AverageAnnualReturnYear05

1.96%

Since Inception

rr_AverageAnnualReturnSinceInception

2.19%

Brown Advisory Tax-Exempt Bond Fund | Bloomberg Municipal Bond Index (reflects no deduction for fees, expenses and taxes)

Prospectus [Line Items]

rr_ProspectusLineItems

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses and taxes)

Label

rr_AverageAnnualReturnLabel

Bloomberg Municipal Bond Index(reflects no deduction for fees, expenses and taxes)

1 Year

rr_AverageAnnualReturnYear01

6.40%

5 Years

rr_AverageAnnualReturnYear05

2.25%

Since Inception

rr_AverageAnnualReturnSinceInception

3.03%

Brown Advisory Tax-Exempt Bond Fund | Institutional Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BTEIX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.30%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

none

Other Expenses

rr_Component2OtherExpensesOverAssets

0.10%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[16]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.41%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 42

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

132

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

230

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 518

Label

rr_AverageAnnualReturnLabel

–Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

7.10%

5 Years

rr_AverageAnnualReturnYear05

2.25%

Since Inception

rr_AverageAnnualReturnSinceInception

2.60%

Brown Advisory Tax-Exempt Bond Fund | Investor Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BIAEX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.30%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.05%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.10%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[16]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.46%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 47

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

148

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

258

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 579

Annual Return 2014

rr_AnnualReturn2014

5.53%

Annual Return 2015

rr_AnnualReturn2015

1.41%

Annual Return 2016

rr_AnnualReturn2016

0.62%

Annual Return 2017

rr_AnnualReturn2017

4.92%

Annual Return 2018

rr_AnnualReturn2018

2.16%

Annual Return 2019

rr_AnnualReturn2019

7.48%

Annual Return 2020

rr_AnnualReturn2020

3.42%

Annual Return 2021

rr_AnnualReturn2021

2.79%

Annual Return 2022

rr_AnnualReturn2022

(8.87%)

Annual Return 2023

rr_AnnualReturn2023

7.16%

Label

rr_AverageAnnualReturnLabel

–Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

7.16%

5 Years

rr_AverageAnnualReturnYear05

2.22%

Since Inception

rr_AverageAnnualReturnSinceInception

2.56%

Brown Advisory Tax-Exempt Bond Fund | Investor Shares | After Taxes on Distributions

Prospectus [Line Items]

rr_ProspectusLineItems

Label

rr_AverageAnnualReturnLabel

–Return After Taxes on Distributions

1 Year

rr_AverageAnnualReturnYear01

7.03%

5 Years

rr_AverageAnnualReturnYear05

2.14%

Since Inception

rr_AverageAnnualReturnSinceInception

2.52%

Brown Advisory Tax-Exempt Bond Fund | Investor Shares | After Taxes on Distributions and Sales

Prospectus [Line Items]

rr_ProspectusLineItems

Label

rr_AverageAnnualReturnLabel

–Return After Taxes on Distributions and Sale of Fund Shares

1 Year

rr_AverageAnnualReturnYear01

5.74%

5 Years

rr_AverageAnnualReturnYear05

2.36%

Since Inception

rr_AverageAnnualReturnSinceInception

2.61%

Brown Advisory Tax-Exempt Bond Fund | Advisor Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.30%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.05%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.10%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[16]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.71%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 73

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

227

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

395

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 883

Brown Advisory Tax-Exempt Sustainable Bond Fund

Prospectus [Line Items]

rr_ProspectusLineItems

Risk/Return [Heading]

rr_RiskReturnHeading

Brown Advisory Tax-Exempt Sustainable Bond Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Brown Advisory Tax-Exempt Sustainable Bond Fund (the “Fund”) seeks to provide a high level of current income exempt from Federal income tax by investing primarily in intermediate-term investment grade municipal bonds while giving special consideration to certain sustainable investment criteria.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses(expenses that you pay each year as a percentage of the value of your investment)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

50.00%

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal circumstances, the Fund will invest at least 80% of the value of its net assets (plus any borrowings for investment purposes) in fixed income securities the interest of which is exempt from Federal income taxes, that do not subject shareholders to the federal alternative minimum tax (“AMT”), and that have either a bond issuer or a use of proceeds of the bond issuance that satisfies the Fund’s sustainable investment criteria, together the “Investment Criteria” of the Fund. This 80% policy cannot be changed without shareholder approval. The Fund may invest up to 20% of its assets in securities that may fully subject shareholders to Federal income tax, including the AMT. In addition, all capital gains are subject to Federal and state taxes. The Fund may also invest more than 25% of its total assets in municipal bonds that are related in such a way that an economic, business or political development or change affecting one such security could also affect the other securities (for example, securities whose issuers are located in the same state). Certain of the fixed income securities that the Fund may invest in are often referred to as “labeled bonds.” Labeled bonds include, but are not limited to, “Green Bonds”, “Social Bonds”, “Sustainability Bonds,” or “Sustainability-Linked Bonds”.

Under normal conditions, Brown Advisory LLC (the “Adviser”) seeks to achieve the Fund’s investment objective by investing in municipal securities issued by states, U.S. territories, and possessions, U.S. Government securities, general obligation securities and revenue securities, including private activity bonds. Municipal securities include state and local general obligation bonds, essential service revenue issues (principally, water and sewer, transportation, public power, combined utilities and public universities), pre-refunded bonds and municipal leases. The Fund may also invest in private placements in these types of securities. Municipal leases are securities that permit government issuers to acquire property and equipment without the security being subject to constitutional and statutory requirements for the issuance of long-term fixed income securities. To enhance yield, the Fund may also invest in selective enterprise revenue and/or private activity issues. The repayment of principal and interest on some of the municipal securities in which the Fund may invest may be guaranteed or insured by a monoline insurance company (a bond insurer) or other financial institution. The Fund also may invest in other investment companies, principally money market funds.

In determining the municipal securities in which the Fund may invest, the Adviser will use a process for researching securities for purchase that is based on intensive credit research and involves extensive due diligence on each issuer, state, municipality and sector relating to a municipal security.

The Adviser utilizes sustainable investment analysis in connection with the Fund's investments in fixed-income securities. As part of the research approach, the Adviser has a process to integrate, identify and consider the sustainable investment related risks and opportunities using a sustainable investment research assessment. The assessment may be conducted at the sector, issuer or security level. Not every investment will be covered at the issuer or security level. The Fund has access to this research and considers relevant sustainability issues. However, at the Adviser’s discretion, the Fund is permitted to make an investment without a written sustainable investment research assessment on file at the time of purchase, as long as the Adviser believes the security meets the Fund’s sustainable investment criteria.

The Fund's sustainable investment criteria considers many factors including, but not limited to, any one or more of the following: clean and renewable energy, climate change and water conservation, efficient mass transit, innovative efficiency solutions, economic impact, access to affordable healthcare and community health promotion, access to education opportunities, stewardship of debt and capital, and board governance and transparency.

The outcomes of the Adviser’s research may result in positive environmental and social impacts. While not a thematic fund, the nature of the Adviser's research considers sustainable investment themes, such as any one or more of responsible water management, accessibility of essential services like healthcare, transportation, education, and climate mitigation.

The Adviser pursues strategic engagement with issuers and other stakeholders in an effort to enhance due diligence and monitor the investment thesis.

Strategy Portfolio Concentration [Text]

rr_StrategyPortfolioConcentration

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The following performance information provides some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund’s performance of Investor Shares from year-to-year. The table shows how the average annual returns of Investor Shares for the 1 year and since inception periods compare to the Fund's primary broad-based market index and a secondary index provided to offer additional market perspective. In accordance with new regulatory requirements, the Fund has selected the Bloomberg Municipal Bond Index as the Fund’s new primary benchmark. The Fund’s former primary benchmark, the Bloomberg 1-10 Year Blended Municipal Bond Index, is also included for comparison.

Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results. Updated performance information is available online at www.https://www.brownadvisory.com/mf/funds/tax-exempt-sustainable-bond-fund or by calling 800‑540‑6807 (toll free).

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The following performance information provides some indication of the risks of investing in the Fund.

Performance Additional Market Index [Text]

rr_PerformanceAdditionalMarketIndex

The table shows how the average annual returns of Investor Shares for the 1 year and since inception periods compare to the Fund's primary broad-based market index and a secondary index provided to offer additional market perspective.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

800‑540‑6807

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.https://www.brownadvisory.com/mf/funds/tax-exempt-sustainable-bond-fund

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results.

Bar Chart [Heading]

rr_BarChartHeading

Brown Advisory Tax-Exempt Sustainable Bond Fund – Investor Shares Annual Total Returns

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

The Fund’s calendar year-to-date total return as of September 30, 2024 was 3.05%. During the period shown in the chart, the highest quarterly return was 5.79% (for the quarter ended December 31, 2023) and the lowest quarterly return was -6.42% (for the quarter ended March 31, 2022).

Year to Date Return, Label

rr_YearToDateReturnLabel

year-to-date total return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2024

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

3.05%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

highest quarterly return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Dec. 31, 2023

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

5.79%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

lowest quarterly return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Mar. 31, 2022

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(6.42%)

Performance Table Heading

rr_PerformanceTableHeading

Brown Advisory Tax-Exempt Sustainable Bond Fund Average Annual Total Returns

Performance Table Market Index Changed

rr_PerformanceTableMarketIndexChanged

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

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.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

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.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

Brown Advisory Tax-Exempt Sustainable Bond Fund | Risk Lose Money [Member]

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

As with all mutual funds, there is the risk that you could lose all or a portion of your investment in the Fund.

Brown Advisory Tax-Exempt Sustainable Bond Fund | Risk Not Insured Depository Institution [Member]

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Brown Advisory Tax-Exempt Sustainable Bond Fund | Credit Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Tax-Exempt Sustainable Bond Fund | Debt/Fixed Income Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Tax-Exempt Sustainable Bond Fund | Derivatives Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Adviser, which may result in losses that partially or completely offset gains in portfolio positions; or that, when used for hedging purposes, derivatives will not provide the anticipated protection, causing the Fund to lose money on both the derivatives transaction and the exposure the Fund sought to hedge. The risks of investing in derivative instruments also include leverage, liquidity, market, credit, operational and legal risks. Additionally, any derivatives held by the Fund will have counterparty associated risks, which are the risks that the other party to the derivative contract, which may be a derivatives exchange, will fail to make required payments or otherwise fail to comply with the terms of the contract. The Fund potentially could lose all or a large portion of its investment in the derivative instrument.

Brown Advisory Tax-Exempt Sustainable Bond Fund | Interest Rate Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Interest Rate Risk. An increase (or the expectation of an increase) in interest rates typically causes a fall in the value of the fixed income securities in which the Fund may invest. The Federal Reserve has increased interest rates at significant levels over recent periods. In addition, changes in monetary policy may exacerbate the risks associated with changing interest rates. Any additional interest rate increases may negatively impact the Fund’s performance or otherwise adversely impact the Fund.

Brown Advisory Tax-Exempt Sustainable Bond Fund | Investments in Other Investment Companies Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Tax-Exempt Sustainable Bond Fund | Liquidity Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Tax-Exempt Sustainable Bond Fund | Management Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Management Risk. The Fund may not meet its investment objective based on the Adviser’s success or failure to implement investment strategies for the Fund.

Brown Advisory Tax-Exempt Sustainable Bond Fund | Maturity Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Tax-Exempt Sustainable Bond Fund | Municipal Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Municipal Securities Risk. Changes in economic, business or political conditions relating to a particular state, or states, or type of projects may have a disproportionate impact on the Fund. Municipalities continue to experience difficulties in the current economic and political environment. National governmental actions, such as the elimination of tax-exempt status, also could affect performance. In addition, a municipality or municipal project that relies directly or indirectly on national governmental funding mechanisms may be negatively affected by the national government’s current budgetary constraints. Municipal obligations that the Fund may acquire include municipal lease obligations, which are issued by a state or local government or authority to acquire land and a wide variety of equipment and facilities. If the funds are not appropriated for the following year’s lease payments, then the lease may terminate, with the possibility of default on the lease obligation and significant loss to the Fund. The repayment of principal and interest on some of the municipal securities in which the Fund may invest may be guaranteed or insured by a monoline insurance company (a bond insurer) or other financial institution. If a company insuring municipal securities in which the Fund invests experiences financial difficulties, the credit rating and price of the security may deteriorate. The credit and quality of private activity bonds are usually related to the credit of the corporate user of the facilities and therefore such bonds are subject to the risks of the corporate user. The Fund may invest more heavily in bonds from certain cities, states or regions than others, which may increase the Fund’s exposure to losses resulting from economic, social, public health, political, environmental or regulatory occurrences impacting these particular cities, states or regions.

Brown Advisory Tax-Exempt Sustainable Bond Fund | Non-Investment Grade ("Junk Bond") Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Tax-Exempt Sustainable Bond Fund | Private Placement Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Private Placement Risk. The Fund may invest in privately issued securities, including those which may be resold only in accordance with Rule 144A under the Securities Act of 1933, as amended. Privately issued securities are restricted securities that are not publicly traded. Delay or difficulty in selling such securities may result in a loss to the Fund.

Brown Advisory Tax-Exempt Sustainable Bond Fund | Rating Agencies Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Tax-Exempt Sustainable Bond Fund | Sustainable Investing Policy Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Tax-Exempt Sustainable Bond Fund | Tax Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Tax-Exempt Sustainable Bond Fund | Valuation Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Tax-Exempt Sustainable Bond Fund | Bloomberg 1-10 Year Blended Municipal Bond Index (reflects no deduction for fees, expenses and taxes)

Prospectus [Line Items]

rr_ProspectusLineItems

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses and taxes)

Label

rr_AverageAnnualReturnLabel

Bloomberg 1-10 Year Blended Municipal Bond Index (reflects no deduction for fees, expenses and taxes)

1 Year

rr_AverageAnnualReturnYear01

4.61%

Since Inception

rr_AverageAnnualReturnSinceInception

1.13%

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 02, 2019

Brown Advisory Tax-Exempt Sustainable Bond Fund | Bloomberg Municipal Bond Index (reflects no deduction for fees, expenses and taxes)

Prospectus [Line Items]

rr_ProspectusLineItems

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses and taxes)

Label

rr_AverageAnnualReturnLabel

Bloomberg Municipal Bond Index(reflects no deduction for fees, expenses and taxes)

1 Year

rr_AverageAnnualReturnYear01

6.40%

Since Inception

rr_AverageAnnualReturnSinceInception

1.06%

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 02, 2019

Brown Advisory Tax-Exempt Sustainable Bond Fund | Institutional Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.30%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

none

Other Expenses

rr_Component2OtherExpensesOverAssets

0.13%

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.43%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 44

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

138

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

241

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 542

Brown Advisory Tax-Exempt Sustainable Bond Fund | Investor Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BITEX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.30%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.05%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.13%

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.48%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 49

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

154

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

269

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 604

Annual Return 2020

rr_AnnualReturn2020

2.07%

Annual Return 2021

rr_AnnualReturn2021

2.55%

Annual Return 2022

rr_AnnualReturn2022

(8.81%)

Annual Return 2023

rr_AnnualReturn2023

4.96%

Label

rr_AverageAnnualReturnLabel

–Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

4.96%

Since Inception

rr_AverageAnnualReturnSinceInception

0.09%

Inception Date

rr_AverageAnnualReturnInceptionDate

Dec. 02, 2019

Brown Advisory Tax-Exempt Sustainable Bond Fund | Investor Shares | After Taxes on Distributions

Prospectus [Line Items]

rr_ProspectusLineItems

Label

rr_AverageAnnualReturnLabel

–Return After Taxes on Distributions

1 Year

rr_AverageAnnualReturnYear01

4.84%

Since Inception

rr_AverageAnnualReturnSinceInception

(0.04%)

Brown Advisory Tax-Exempt Sustainable Bond Fund | Investor Shares | After Taxes on Distributions and Sales

Prospectus [Line Items]

rr_ProspectusLineItems

Label

rr_AverageAnnualReturnLabel

–Return After Taxes on Distributions and Sale of Fund Shares

1 Year

rr_AverageAnnualReturnYear01

4.23%

Since Inception

rr_AverageAnnualReturnSinceInception

0.46%

Brown Advisory Tax-Exempt Sustainable Bond Fund | Advisor Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.30%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.05%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.13%

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.73%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 75

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

233

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

406

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 906

Brown Advisory Mortgage Securities Fund

Prospectus [Line Items]

rr_ProspectusLineItems

Risk/Return [Heading]

rr_RiskReturnHeading

Brown Advisory Mortgage Securities Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Brown Advisory Mortgage Securities Fund (the “Fund”) seeks to maximize total return consistent with preservation of capital.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses(expenses that you pay each year as a percentage of the value of your investment)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

performance. During the most recent fiscal year, the portfolio turnover rate for the Fund was 335% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

335.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal conditions, Brown Advisory LLC (the “Adviser”) seeks to achieve the Fund’s investment objective by investing at least 80% of the value of its net assets (plus any borrowings for investment purposes) in investment grade mortgage-related securities. Mortgage-related securities consist of mortgage-backed securities (“MBS”) such as residential mortgage-backed securities (“RMBS”), commercial mortgage-backed securities (“CMBS”), stripped mortgage-backed securities (“SMBS”), collateralized mortgage obligations (“CMOs”), inverse floating rate obligations and other similar types of securities representing an interest in or that are secured by mortgages. The Fund may also engage in “To Be Announced” transactions and it may invest in municipal housing bonds and other investment companies. The Fund invests in securities of various maturities and durations.

The Fund will hold at least 80% of its net assets in investment grade mortgage-related securities, that is, securities rated in the top four ratings categories as rated at the time of purchase by a Nationally Recognized Statistical Rating Organization (an “NRSRO”), or if unrated, as determined by the Adviser to be of comparable quality. The Fund may also hold up to 20% of its total assets in securities that are rated below investment grade by an NRSRO or, if not rated, determined to be of equivalent quality by the Adviser. Securities that are rated below investment grade by independent rating agencies are commonly referred to as “junk bonds.” If independent rating agencies assign different ratings to the same security, the Fund will use the higher rating for purposes of determining the security’s credit quality.

As part of the Fund’s research approach, the Adviser has a process to integrate, identify and consider the sustainable investment related risks and opportunities using a sustainable investment research assessment. The Fund’s sustainable investment criteria considers many factors including, but not limited to, any one or more of the following: affordable housing, climate change, resource efficiency (energy and water), lending practices, and community development.

The Adviser may sell a security or reduce its position if:

•Revised economic outlook requires a repositioning of the portfolio or alters the risk/reward of a given security

•Changes in a security’s composition, such as faster or slower prepayments than expected, alter its risk/reward balance to an unfavorable position

•A more attractive security is found or

•The Adviser believes the security has reached its appreciation potential.

Strategy Portfolio Concentration [Text]

rr_StrategyPortfolioConcentration

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The following performance information provides some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund’s performance of Investor Shares from year-to-year. The table shows how the average annual returns of the Investor Shares and Institutional Shares for the 1 year, 5 year, and 10 year periods compare to the Fund's primary broad-based market index and a secondary index provided to offer additional market perspective. In accordance with new regulatory requirements, the Fund has selected the Bloomberg U.S. Aggregate Bond Index as the Fund’s new primary benchmark. The Fund’s former primary benchmark, the Bloomberg Mortgage Backed Securities Index, is also included for comparison.

Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results. Updated performance information is available online at www.brownadvisory.com/mf/mortgage-securities-fund or by calling 800‑540‑6807 (toll free).

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The following performance information provides some indication of the risks of investing in the Fund.

Performance Additional Market Index [Text]

rr_PerformanceAdditionalMarketIndex

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

800‑540‑6807

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.brownadvisory.com/mf/mortgage-securities-fund

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results.

Bar Chart [Heading]

rr_BarChartHeading

Brown Advisory Mortgage Securities Fund – Investor Shares Annual Total Returns

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

The Fund’s calendar year-to-date total return as of September 30, 2024 was 4.47%. During the period shown in the chart, the highest quarterly return was 6.62% (for the quarter ended December 31, 2023) and the lowest quarterly return was -4.91% (for the quarter ended September 30, 2022).

Year to Date Return, Label

rr_YearToDateReturnLabel

year-to-date total return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2024

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

4.47%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

highest quarterly return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Dec. 31, 2023

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

6.62%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

lowest quarterly return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2022

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(4.91%)

Performance Table Heading

rr_PerformanceTableHeading

Brown Advisory Mortgage Securities Fund Average Annual Total Returns

Performance Table Market Index Changed

rr_PerformanceTableMarketIndexChanged

In accordance with new regulatory requirements, the Fund has selected the Bloomberg U.S. Aggregate Bond Index as the Fund’s new primary benchmark. The Fund’s former primary benchmark, the Bloomberg Mortgage Backed Securities Index, is also included for comparison.

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

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.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

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.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown for Investor Shares only. After-tax returns for Institutional Shares will vary.

Performance Table Explanation after Tax Higher

rr_PerformanceTableExplanationAfterTaxHigher

Performance Table Footnotes, Reason Performance Information for Class Different from Immediately Preceding Period [Text]

rr_PerformanceTableFootnotesReasonPerformanceInformationForClassDifferentFromImmediatelyPrecedingPeriod

Performance shown prior to inception of the Institutional Shares is based on the performance of Investor Shares, adjusted for the lower expenses applicable to Institutional Shares.

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

NOTE: The Mortgage Securities Fund offers two classes of shares. Investor Shares commenced operations on December 26, 2013 and Institutional Shares commenced operations on May 13, 2014. Performance shown prior to inception of the

Institutional Shares is based on the performance of Investor Shares, adjusted for the lower expenses applicable to Institutional Shares.

Brown Advisory Mortgage Securities Fund | Risk Lose Money [Member]

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

As with all mutual funds, there is the risk that you could lose all or a portion of your investment in the Fund.

Brown Advisory Mortgage Securities Fund | Risk Not Insured Depository Institution [Member]

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Brown Advisory Mortgage Securities Fund | Credit Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

financial condition of an issuer of a fixed income security held by a Fund may cause it to default or become unable or unwilling, or is perceived (whether by market participants, ratings agencies, pricing services or otherwise) as unable or unwilling to pay interest or principal due on the security.

Brown Advisory Mortgage Securities Fund | Debt/Fixed Income Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Mortgage Securities Fund | Derivatives Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Mortgage Securities Fund | Interest Rate Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Mortgage Securities Fund | Investments in Other Investment Companies Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Mortgage Securities Fund | Liquidity Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Mortgage Securities Fund | Management Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Management Risk. The Fund may not meet its investment objective based on the Adviser’s success or failure to implement investment strategies for the Fund.

Brown Advisory Mortgage Securities Fund | Market Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Market Risk. The portfolio securities held by the Fund are susceptible to general market fluctuations and to volatile increases and decreases in value. The securities markets may experience declines and the holdings in the Fund’s portfolio may not increase their earnings at the rate anticipated.

Brown Advisory Mortgage Securities Fund | Mortgage-Related Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Mortgage-Related Securities Risk. Mortgage-related securities are subject to prepayment risk as well as the risks associated with investing in debt securities in general. If interest rates fall and the loans underlying these securities are prepaid faster than expected, the Fund may have to reinvest the prepaid principal in lower yielding securities, thus reducing the Fund’s income. Conversely, if interest rates increase and the loans underlying the securities are prepaid more slowly than expected, the expected duration of the securities may be extended, reducing the cash flow for potential reinvestment in higher yielding securities.

Brown Advisory Mortgage Securities Fund | Municipal Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Municipal Securities Risk. Adverse economic or political factors in the municipal bond market, including changes in the tax law, could impact the Fund in a negative manner.

Brown Advisory Mortgage Securities Fund | Non-Investment Grade ("Junk Bond") Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Mortgage Securities Fund | Portfolio Turnover Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Mortgage Securities Fund | Prepayment/Extension Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Mortgage Securities Fund | Private Placement Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Mortgage Securities Fund | Rating Agencies Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Mortgage Securities Fund | Sustainable Investing Policy Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Mortgage Securities Fund | To Be Announced (“TBA”) Transactions Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Mortgage Securities Fund | U.S. Government Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Mortgage Securities Fund | Valuation Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Mortgage Securities Fund | Bloomberg US Aggregate Bond Index (reflects no deduction for fees, expenses and taxes)

Prospectus [Line Items]

rr_ProspectusLineItems

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses and taxes)

Label

rr_AverageAnnualReturnLabel

Bloomberg U.S. Aggregate Bond Index(reflects no deduction for fees, expenses and taxes)

1 Year

rr_AverageAnnualReturnYear01

5.53%

5 Years

rr_AverageAnnualReturnYear05

1.10%

Since Inception

rr_AverageAnnualReturnSinceInception

1.81%

Brown Advisory Mortgage Securities Fund | Bloomberg Mortgage Backed Securities Index (reflects no deduction for fees, expenses and taxes)

Prospectus [Line Items]

rr_ProspectusLineItems

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses and taxes)

Label

rr_AverageAnnualReturnLabel

Bloomberg Mortgage Backed Securities Index (reflects no deduction for fees, expenses and taxes)

1 Year

rr_AverageAnnualReturnYear01

5.05%

5 Years

rr_AverageAnnualReturnYear05

0.25%

Since Inception

rr_AverageAnnualReturnSinceInception

1.38%

Brown Advisory Mortgage Securities Fund | Institutional Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BAFZX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.30%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

none

Other Expenses

rr_Component2OtherExpensesOverAssets

0.15%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[17]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.46%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 47

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

148

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

258

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 579

Label

rr_AverageAnnualReturnLabel

–Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

4.28%

5 Years

rr_AverageAnnualReturnYear05

0.96%

Since Inception

rr_AverageAnnualReturnSinceInception

1.57%

Brown Advisory Mortgage Securities Fund | Investor Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BIAZX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.30%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.05%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.15%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[17]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.51%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 52

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

164

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

285

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 640

Annual Return 2014

rr_AnnualReturn2014

4.02%

Annual Return 2015

rr_AnnualReturn2015

2.29%

Annual Return 2016

rr_AnnualReturn2016

1.24%

Annual Return 2017

rr_AnnualReturn2017

2.35%

Annual Return 2018

rr_AnnualReturn2018

0.73%

Annual Return 2019

rr_AnnualReturn2019

6.93%

Annual Return 2020

rr_AnnualReturn2020

5.49%

Annual Return 2021

rr_AnnualReturn2021

(0.30%)

Annual Return 2022

rr_AnnualReturn2022

(10.64%)

Annual Return 2023

rr_AnnualReturn2023

4.34%

Label

rr_AverageAnnualReturnLabel

–Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

4.34%

5 Years

rr_AverageAnnualReturnYear05

0.95%

Since Inception

rr_AverageAnnualReturnSinceInception

1.53%

Brown Advisory Mortgage Securities Fund | Investor Shares | After Taxes on Distributions

Prospectus [Line Items]

rr_ProspectusLineItems

Label

rr_AverageAnnualReturnLabel

–Return After Taxes on Distributions

1 Year

rr_AverageAnnualReturnYear01

2.77%

5 Years

rr_AverageAnnualReturnYear05

0.15%

Since Inception

rr_AverageAnnualReturnSinceInception

0.53%

Brown Advisory Mortgage Securities Fund | Investor Shares | After Taxes on Distributions and Sales

Prospectus [Line Items]

rr_ProspectusLineItems

Label

rr_AverageAnnualReturnLabel

–Return After Taxes on Distributions and Sale of Fund Shares

1 Year

rr_AverageAnnualReturnYear01

2.54%

5 Years

rr_AverageAnnualReturnYear05

0.39%

Since Inception

rr_AverageAnnualReturnSinceInception

0.74%

Brown Advisory Mortgage Securities Fund | Advisor Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.30%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.05%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.15%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[17]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.76%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 78

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

243

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

422

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 942

Brown Advisory WMC Strategic European Equity Fund

Prospectus [Line Items]

rr_ProspectusLineItems

Risk/Return [Heading]

rr_RiskReturnHeading

Brown Advisory – WMC Strategic European Equity Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Brown Advisory − WMC Strategic European Equity Fund (the “Fund”) seeks to achieve total return by investing principally in equity securities issued by companies established or operating in Europe.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses(expenses that you pay each year as a percentage of the value of your investment)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

41.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal conditions, the Brown Advisory − WMC Strategic European Equity Fund seeks to achieve its investment objective by investing at least 80% of the value of its net assets (plus any borrowings for investment purposes) in equity securities of companies which are domiciled in or exercise the predominant part of their economic activity in Europe – defined as countries included in the MSCI Europe Index.

In determining whether a company is domiciled in or exercises the predominant part of its economic activity in Europe, the Fund will consider any one of the following four factors when making its determination: (i) country of organization; (ii) primary securities trading market; (iii) location of assets; or (iv) country where the company derives at least half of its revenue or profits. As of September 30, 2024, the following countries were included in the MSCI Europe Index: Austria, Belgium, Denmark, Finland, France, Germany, Ireland, Italy, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom.

The Fund may purchase equity securities of companies of any size capitalization. Equity securities in which the Fund may invest include common stock, preferred stock, equity-equivalent securities such as stock futures contracts or convertible securities, equity options, other investment companies, American Depositary Receipts (“ADRs”), Global Depositary Receipts (“GDRs”), real estate investment trusts (“REITs”), initial public offerings (“IPOs”), and exchange traded funds (“ETFs”).

The Fund may invest up to 20% of its net assets in securities of companies that are established or operating in countries that are considered to be outside of Europe, which may include less developed and emerging markets countries as well as other developed market countries.

The Fund may utilize options, futures contracts, currency forwards, swaps and options on futures. These investments will typically be made for investment purposes consistent with the Fund’s investment objective and may also be used to mitigate or hedge risks within the portfolio or for the temporary investment of cash balances. The Fund may also invest in participatory notes which are instruments that are used to replicate the performance of certain underlying issuers and markets. By investing in derivatives, the Fund attempts to achieve the economic equivalence it would achieve if it were to invest directly in the underlying security. Investments in derivatives may be counted towards the Fund’s 80% investment policy if they have economic characteristics similar to the other investments that are included in the Fund’s 80% investment policy. The Fund intends to use the mark-to-market value of such derivatives for purposes of complying with the Fund’s 80% investment policy.

The Fund may sell its portfolio securities for a variety of reasons, such as to secure gains, limit losses, or redeploy assets into more promising opportunities.

Strategy Portfolio Concentration [Text]

rr_StrategyPortfolioConcentration

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Bar Chart and Performance Table [Heading]

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Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results. Updated performance information is available online at www.brownadvisory.com/mf/wmc-strategic-european-equity-fund or by calling 800-540-6807 (toll free).

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The following performance information provides some indication of the risks of investing in the Fund.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

800-540-6807

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.brownadvisory.com/mf/wmc-strategic-european-equity-fund

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results.

Bar Chart [Heading]

rr_BarChartHeading

Brown Advisory – WMC Strategic European Equity Fund – Investor Shares Annual Total Returns

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

The Fund’s calendar year-to-date total return as of September 30, 2024 was 18.74%. During the period shown in the chart, the highest quarterly return was 21.67% (for the quarter ended December 31, 2022) and the lowest quarterly return was -22.13% (for the quarter ended March 31, 2020).

Year to Date Return, Label

rr_YearToDateReturnLabel

year-to-date total return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2024

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

18.74%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

highest quarterly return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Dec. 31, 2022

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

21.67%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

lowest quarterly return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Mar. 31, 2020

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(22.13%)

Performance Table Heading

rr_PerformanceTableHeading

Brown Advisory – WMC Strategic European Equity Fund Average Annual Total Returns

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

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.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

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.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown for Investor Shares only. After-tax returns for Advisor Shares and Institutional Shares will vary.

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

Brown Advisory WMC Strategic European Equity Fund | Risk Lose Money [Member]

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

As with all mutual funds, there is the risk that you could lose all or a portion of your investment in the Fund.

Brown Advisory WMC Strategic European Equity Fund | Risk Not Insured Depository Institution [Member]

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

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An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Brown Advisory WMC Strategic European Equity Fund | American Depositary Receipts (“ADRs”) And Global Depository Receipts (“GDRs”) Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

political, regulatory and diplomatic risks. In a sponsored ADR arrangement, the foreign issuer assumes the obligation to pay some or all of the depositary’s transaction fees. Under an unsponsored ADR arrangement, the foreign issuer assumes no obligations and the depositary’s transaction fees are paid directly by the ADR holders. Because unsponsored ADR arrangements are organized independently and without the cooperation of the issuer of the underlying securities, available information concerning the foreign issuer may not be as current as for sponsored ADRs and voting rights with respect to the deposited securities are not passed through. GDRs can involve currency risk since, unlike ADRs, they may not be U.S. dollar-denominated.

Brown Advisory WMC Strategic European Equity Fund | Convertible Securities Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory WMC Strategic European Equity Fund | Credit Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory WMC Strategic European Equity Fund | Currency And Exchange Rate Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory WMC Strategic European Equity Fund | Derivatives Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

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Brown Advisory WMC Strategic European Equity Fund | Emerging Markets Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

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Brown Advisory WMC Strategic European Equity Fund | Equity And General Market Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

developments, governmental actions or intervention, natural disasters, epidemics, pandemics or other external factors, experience periods of high volatility and reduced liquidity. During those periods, the Fund may experience high levels of shareholder redemptions, and may have to sell securities at times when the Fund would otherwise not do so, potentially at unfavorable prices. Certain securities, particularly fixed income securities, may be difficult to value during such periods.

Brown Advisory WMC Strategic European Equity Fund | ETF Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory WMC Strategic European Equity Fund | European Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

European Securities Risk. Because a significant portion of the assets of the Fund are invested in European securities, the Fund’s performance is expected to be impacted by the political, social and economic environment within Europe. As such, the Fund’s performance may be more volatile than the performance of funds that are more geographically diverse.

Brown Advisory WMC Strategic European Equity Fund | Foreign Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

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Brown Advisory WMC Strategic European Equity Fund | Investments in Other Investment Companies Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory WMC Strategic European Equity Fund | Large Capitalization Company Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

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Brown Advisory WMC Strategic European Equity Fund | Large Investor Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Large Investor Risk. Ownership of shares of the Fund may be concentrated in one or more large investors. These investors may redeem shares in substantial quantities or on a frequent basis, which may negatively impact the Fund’s performance, may increase realized capital gains, may accelerate the realization of taxable income to other shareholders and may potentially limit the use of available capital loss carryforwards or certain other losses to offset any future realized capital gains. Large investor redemption activity also may increase the Fund’s brokerage and other expenses.

Brown Advisory WMC Strategic European Equity Fund | Liquidity Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory WMC Strategic European Equity Fund | Management Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Management Risk. The Fund may not meet its investment objective based on the Sub-Adviser’s success or failure to implement investment strategies for the Fund.

Brown Advisory WMC Strategic European Equity Fund | REIT And Real Estate Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory WMC Strategic European Equity Fund | Smaller And Medium Capitalization Company Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory WMC Strategic European Equity Fund | Valuation Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory WMC Strategic European Equity Fund | MSCI Europe Index (reflects no deduction for fees, expenses and taxes)

Prospectus [Line Items]

rr_ProspectusLineItems

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses and taxes)

Label

rr_AverageAnnualReturnLabel

MSCI Europe Index (reflects no deduction for fees, expenses and taxes)

1 Year

rr_AverageAnnualReturnYear01

19.89%

5 Years

rr_AverageAnnualReturnYear05

9.09%

Since Inception

rr_AverageAnnualReturnSinceInception

4.13%

Brown Advisory WMC Strategic European Equity Fund | Institutional Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BAFHX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.90%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

none

Other Expenses

rr_Component2OtherExpensesOverAssets

0.15%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[18]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

1.06%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 108

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

337

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

585

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,294

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

19.51%

5 Years

rr_AverageAnnualReturnYear05

10.77%

Since Inception

rr_AverageAnnualReturnSinceInception

6.20%

Brown Advisory WMC Strategic European Equity Fund | Investor Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BIAHX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.90%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.15%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.15%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[18]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

1.21%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 123

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

384

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

665

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,466

Annual Return 2014

rr_AnnualReturn2014

(5.09%)

Annual Return 2015

rr_AnnualReturn2015

6.05%

Annual Return 2016

rr_AnnualReturn2016

(2.28%)

Annual Return 2017

rr_AnnualReturn2017

32.36%

Annual Return 2018

rr_AnnualReturn2018

(16.49%)

Annual Return 2019

rr_AnnualReturn2019

23.52%

Annual Return 2020

rr_AnnualReturn2020

11.29%

Annual Return 2021

rr_AnnualReturn2021

14.60%

Annual Return 2022

rr_AnnualReturn2022

(11.96%)

Annual Return 2023

rr_AnnualReturn2023

19.36%

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

19.36%

5 Years

rr_AverageAnnualReturnYear05

10.61%

Since Inception

rr_AverageAnnualReturnSinceInception

6.05%

Brown Advisory WMC Strategic European Equity Fund | Investor Shares | After Taxes on Distributions

Prospectus [Line Items]

rr_ProspectusLineItems

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

1 Year

rr_AverageAnnualReturnYear01

19.23%

5 Years

rr_AverageAnnualReturnYear05

9.49%

Since Inception

rr_AverageAnnualReturnSinceInception

5.24%

Brown Advisory WMC Strategic European Equity Fund | Investor Shares | After Taxes on Distributions and Sales

Prospectus [Line Items]

rr_ProspectusLineItems

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

1 Year

rr_AverageAnnualReturnYear01

11.87%

5 Years

rr_AverageAnnualReturnYear05

8.45%

Since Inception

rr_AverageAnnualReturnSinceInception

4.84%

Brown Advisory WMC Strategic European Equity Fund | Advisor Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BAHAX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.90%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.15%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.15%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[18]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

1.46%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 149

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

462

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

797

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,746

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

19.12%

5 Years

rr_AverageAnnualReturnYear05

10.33%

Since Inception

rr_AverageAnnualReturnSinceInception

5.79%

Brown Advisory Emerging Markets Select Fund

Prospectus [Line Items]

rr_ProspectusLineItems

Risk/Return [Heading]

rr_RiskReturnHeading

Brown Advisory Emerging Markets Select Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Brown Advisory Emerging Markets Select Fund (the “Fund”) seeks to achieve total return by investing principally in equity securities issued by companies established or operating in emerging markets.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses(expenses that you pay each year as a percentage of the value of your investment)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

performance. During the most recent fiscal year, the portfolio turnover rate for the Fund was 70% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

70.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Acquired Fund Fees and Expenses are indirect fees and expenses that the Fund incurs from investing in the shares of other mutual funds, including money market funds and exchange traded funds. Please note that the amount of Total Annual Fund Operating Expenses shown in the above table will differ from the “Financial Highlights” section of the Prospectus which reflects the operating expenses of the Fund and does not include indirect expenses such as Acquired Fund Fees and Expenses.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal conditions, the Fund seeks to achieve its investment objective by investing at least 80% of the value of its net assets (plus any borrowings for investment purposes) in equity securities issued by companies that are established or operating in emerging market countries. These will consist of companies in emerging market countries in Latin America, Asia, Eastern Europe, Africa, and the Middle East. The Fund intends to invest primarily in the following countries (others may be added as markets in other countries develop):

•Asia: China, Hong Kong, India, Indonesia, Malaysia, Pakistan, Philippines, Singapore, South Korea, Sri Lanka, Taiwan, Thailand, and Vietnam.

•Latin America: Argentina, Belize, Brazil, Chile, Colombia, Mexico, Panama, Peru, and Venezuela.

•Eastern Europe: Croatia, Czech Republic, Estonia, Hungary, Kazakhstan, Latvia, Lithuania, Poland, Romania, Russia, Slovakia, Slovenia, Turkey, and Ukraine.

•Africa and the Middle East: Bahrain, Botswana, Egypt, Israel, Jordan, Kenya, Kuwait, Lebanon, Mauritius, Morocco, Nigeria, Oman, Qatar, Saudi Arabia, South Africa, Tunisia, United Arab Emirates, and Zimbabwe.

The Fund may purchase equity securities of companies of any size capitalization. Equity securities in which the Fund may invest include common stock, preferred stock, equity-equivalent securities such as convertible securities, stock futures contracts, equity options, other investment companies, American Depositary Receipts (“ADRs”), European Depositary Receipts (“EDRs”), Global Depositary Receipts (“GDRs”), Non-Voting Depositary Receipts (“NVDRs”), real estate investment trusts (“REITs”) and exchange traded funds (“ETFs”), initial public offerings (“IPOs”), and the Fund may also invest in fixed income securities and private placements.

The Fund considers a company to be established or operating in emerging market countries if: (i) it is organized under the laws of or maintains its principal office in an emerging market country; (ii) its securities are principally traded on trading markets in emerging markets countries; (iii) it derives at least 50% of its total revenue or profits from either goods or services produced or sales made in emerging markets countries; or (iv) it has at least 50% of its assets in emerging market countries.

The Fund may utilize rights, warrants, options, futures contracts and options on futures. These investments will typically be made for investment purposes consistent with the Fund’s investment objective and may also be used to mitigate or hedge risks within the portfolio or for the temporary investment of cash balances. The Fund may also invest in Contracts for Difference or participatory notes which are instruments that are used to replicate the performance of certain underlying issuers and markets. By investing in derivatives, the Fund attempts to achieve the economic equivalence it would achieve if it were to invest directly in the underlying security. Investments in derivatives may be counted towards the Fund’s 80% investment policy if they have economic characteristics similar to the other investments that are included in the Fund’s 80% investment policy. The Fund intends to use the mark-to-market value of such derivatives for purposes of complying with the Fund’s 80% investment policy.

The Fund may invest up to 20% of its net assets in fixed income securities.

The Fund may sell its portfolio securities for a variety of reasons, such as to secure gains, limit losses, or redeploy assets into more promising opportunities.

Strategy Portfolio Concentration [Text]

rr_StrategyPortfolioConcentration

The Fund may invest up to 20% of its net assets in securities of companies that are established or operating in countries that are considered to be outside of emerging markets, which may include other less developed countries as well as developed market countries. Such less developed countries share many similar attributes with emerging markets countries, however, their markets are not yet considered to be as developed as those in the emerging markets.The Fund may utilize rights, warrants, options, futures contracts and options on futures. These investments will typically be made for investment purposes consistent with the Fund’s investment objective and may also be used to mitigate or hedge risks within the portfolio or for the temporary investment of cash balances. The Fund may also invest in Contracts for Difference or participatory notes which are instruments that are used to replicate the performance of certain underlying issuers and markets. By investing in derivatives, the Fund attempts to achieve the economic equivalence it would achieve if it were to invest directly in the underlying security. Investments in derivatives may be counted towards the Fund’s 80% investment policy if they have economic characteristics similar to the other investments that are included in the Fund’s 80% investment policy. The Fund intends to use the mark-to-market value of such derivatives for purposes of complying with the Fund’s 80% investment policy. The Fund may invest up to 20% of its net assets in fixed income securities.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The following performance information provides some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund’s performance of Investor Shares from year-to-year. The table shows how the average annual returns of the Investor Shares, Advisor Shares and Institutional Shares for the 1 year, 5 year, and 10 year periods compare to the Fund's primary broad-based market index. Prior to February 23, 2019, the Fund engaged a different, sole investment sub-adviser and operated subject to different principal investment strategies. As a result, the performance prior to February 23, 2019 is attributable to the former investment sub-adviser and different principal investment strategies.

Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results. Updated performance information is available online at www.brownadvisory.com/mf/emerging-markets-select-fund or by calling 800‑540‑6807 (toll free).

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The following performance information provides some indication of the risks of investing in the Fund.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

800‑540‑6807

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.brownadvisory.com/mf/emerging-markets-select-fund

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results.

Bar Chart [Heading]

rr_BarChartHeading

Brown Advisory Emerging Markets Select Fund – Investor Shares Annual Total Returns

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

The Fund’s calendar year-to-date total return as of September 30, 2024 was 16.40%. During the period shown in the chart, the highest quarterly return was 21.39% (for the quarter ended December 31, 2020) and the lowest quarterly return was -24.85% (for the quarter ended March 31, 2020).

Year to Date Return, Label

rr_YearToDateReturnLabel

year-to-date total return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2024

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

16.40%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

highest quarterly return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Dec. 31, 2020

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

21.39%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

lowest quarterly return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Mar. 31, 2020

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(24.85%)

Performance Table Heading

rr_PerformanceTableHeading

Brown Advisory Emerging Markets Select Fund Average Annual Total Returns

Performance Table Does Reflect Sales Loads

rr_PerformanceTableDoesReflectSalesLoads

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.

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

Actual after-tax returns depend on an investor’s tax situation and may differ from those shown.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

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.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown for Investor Shares only. After-tax returns for Advisor Shares and Institutional Shares will vary.

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

Brown Advisory Emerging Markets Select Fund | Risk Lose Money [Member]

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

As with all mutual funds, there is the risk that you could lose all or a portion of your investment in the Fund.

Brown Advisory Emerging Markets Select Fund | Risk Not Insured Depository Institution [Member]

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Brown Advisory Emerging Markets Select Fund | American Depositary Receipts (“ADRs”) And Global Depository Receipts (“GDRs”) Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Emerging Markets Select Fund | Convertible Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

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Brown Advisory Emerging Markets Select Fund | Credit Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Emerging Markets Select Fund | Currency And Exchange Rate Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Emerging Markets Select Fund | Derivatives Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

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Brown Advisory Emerging Markets Select Fund | Emerging Markets Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

sensitive to market movements because their market prices tend to reflect speculative expectations. Low trading volumes may result in a lack of liquidity and in extreme price volatility. Investors should be able to tolerate sudden, sometimes substantial, fluctuations in the value of their investments. Emerging market countries may have policies that restrict investment by foreigners or that prevent foreign investors from withdrawing their money at will.

Brown Advisory Emerging Markets Select Fund | Equity And General Market Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Emerging Markets Select Fund | ETF Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Emerging Markets Select Fund | Foreign Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Emerging Markets Select Fund | Geographic Focus Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Geographic Focus Risk. To the extent that the Fund focuses its investments in a particular geographic region or country, the Fund may be subject to increased currency, political, regulatory and other risks relating to such region or country. As a result, the Fund may be subject to greater price volatility and risk of loss than a fund holding more geographically diverse investments.

Brown Advisory Emerging Markets Select Fund | Investments in Other Investment Companies Risk Member

Prospectus [Line Items]

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Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Emerging Markets Select Fund | Large Capitalization Company Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory Emerging Markets Select Fund | Liquidity Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Emerging Markets Select Fund | Management Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Management Risk. The Fund may not meet its investment objective based on the Sub-Advisers' success or failure to implement investment strategies for the Fund.

Brown Advisory Emerging Markets Select Fund | Private Placement Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

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Brown Advisory Emerging Markets Select Fund | REIT And Real Estate Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

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Brown Advisory Emerging Markets Select Fund | Smaller And Medium Capitalization Company Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory Emerging Markets Select Fund | Valuation Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory Emerging Markets Select Fund | MSCI Emerging Markets Index (reflects no deduction for fees, expenses and taxes)

Prospectus [Line Items]

rr_ProspectusLineItems

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses and taxes)

Label

rr_AverageAnnualReturnLabel

MSCI Emerging Markets Index(reflects no deduction for fees, expenses and taxes)

1 Year

rr_AverageAnnualReturnYear01

9.83%

5 Years

rr_AverageAnnualReturnYear05

3.68%

Since Inception

rr_AverageAnnualReturnSinceInception

2.66%

Brown Advisory Emerging Markets Select Fund | Institutional Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BAFQX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.90%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

none

Other Expenses

rr_Component2OtherExpensesOverAssets

0.19%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[19]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

1.10%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 112

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

350

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

606

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,340

Label

rr_AverageAnnualReturnLabel

–Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

10.69%

5 Years

rr_AverageAnnualReturnYear05

5.78%

Since Inception

rr_AverageAnnualReturnSinceInception

2.56%

Brown Advisory Emerging Markets Select Fund | Investor Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BIAQX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.90%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.15%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.19%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[19]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

1.25%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 127

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

397

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

686

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,511

Annual Return 2014

rr_AnnualReturn2014

(0.34%)

Annual Return 2015

rr_AnnualReturn2015

(12.32%)

Annual Return 2016

rr_AnnualReturn2016

4.61%

Annual Return 2017

rr_AnnualReturn2017

32.77%

Annual Return 2018

rr_AnnualReturn2018

(20.51%)

Annual Return 2019

rr_AnnualReturn2019

16.75%

Annual Return 2020

rr_AnnualReturn2020

18.34%

Annual Return 2021

rr_AnnualReturn2021

1.55%

Annual Return 2022

rr_AnnualReturn2022

(15.21%)

Annual Return 2023

rr_AnnualReturn2023

10.54%

Label

rr_AverageAnnualReturnLabel

–Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

10.54%

5 Years

rr_AverageAnnualReturnYear05

5.63%

Since Inception

rr_AverageAnnualReturnSinceInception

2.41%

Brown Advisory Emerging Markets Select Fund | Investor Shares | After Taxes on Distributions

Prospectus [Line Items]

rr_ProspectusLineItems

Label

rr_AverageAnnualReturnLabel

–Return After Taxes on Distributions

1 Year

rr_AverageAnnualReturnYear01

10.18%

5 Years

rr_AverageAnnualReturnYear05

5.59%

Since Inception

rr_AverageAnnualReturnSinceInception

2.35%

Brown Advisory Emerging Markets Select Fund | Investor Shares | After Taxes on Distributions and Sales

Prospectus [Line Items]

rr_ProspectusLineItems

Label

rr_AverageAnnualReturnLabel

–Return After Taxes on Distributions and Sale of Fund Shares

1 Year

rr_AverageAnnualReturnYear01

6.59%

5 Years

rr_AverageAnnualReturnYear05

4.58%

Since Inception

rr_AverageAnnualReturnSinceInception

2.09%

Brown Advisory Emerging Markets Select Fund | Advisor Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BAQAX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.90%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.15%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.19%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[19]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

1.50%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 153

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

474

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

818

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,791

Label

rr_AverageAnnualReturnLabel

–Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

10.27%

5 Years

rr_AverageAnnualReturnYear05

5.35%

Since Inception

rr_AverageAnnualReturnSinceInception

2.14%

Brown Advisory Beutel Goodman Large-Cap Value Fund

Prospectus [Line Items]

rr_ProspectusLineItems

Risk/Return [Heading]

rr_RiskReturnHeading

Brown Advisory – Beutel Goodman Large-Cap Value Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Brown Advisory – Beutel Goodman Large-Cap Value Fund (the “Fund”) seeks to achieve capital appreciation.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees(fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses(expenses that you pay each year as a percentage of the value of your investment)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

performance. During the most recent fiscal year, the portfolio turnover rate for the Fund was 24% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

24.00%

Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]

rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees

Acquired Fund Fees and Expenses are indirect fees and expenses that the Fund incurs from investing in the shares of other mutual funds, including money market funds and exchange traded funds. Please note that the amount of Total Annual Fund Operating Expenses shown in the above table will differ from the “Financial Highlights” section of the Prospectus which reflects the operating expenses of the Fund and does not include indirect expenses such as Acquired Fund Fees and Expenses.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal conditions, the Fund seeks to achieve its investment objective by investing at least 80% of the value of its net assets (plus any borrowings for investment purposes) in equity securities of large-cap companies. The Fund considers large-cap companies to be those with market capitalizations greater than $5 billion at the time of purchase.

The Fund seeks to invest in companies at discounts to their business value, which the Fund considers to be the present value of sustainable free cash flow. To identify these investment opportunities, the Fund employs a disciplined, bottom-up investment process highlighted by rigorous, internally-generated fundamental research. Accordingly, investments are made only when the Fund believes there is a sufficient discount to business value to mitigate the loss of capital in the event of adverse circumstances.

Equity securities in which the Fund may invest include common and preferred stock, convertible debt securities, American Depositary Receipts (“ADRs”), real estate investment trusts (“REITs”), exchange traded funds (“ETFs”), and other types of investment companies. The Fund may also invest in private placements in these types of securities. The Fund may invest in ETFs and other types of investment companies that have an investment objective similar to the Fund’s or that otherwise are permitted investments with the Fund’s investment policies described herein. ADRs are equity securities traded on U.S. securities exchanges, which are generally issued by banks or trust companies to evidence ownership of foreign equity securities. The Fund may invest up to 20% of its net assets in foreign securities. The Fund is non-diversified, which means that it may invest a significant portion of its assets in the securities of a single issuer or small number of issuers.

The Fund may utilize options, futures contracts and options on futures. These investments will typically be made for investment purposes consistent with the Fund’s investment objective and may also be used to mitigate or hedge risks within the portfolio or for the temporary investment of cash balances. By investing in derivatives, the Fund attempts to achieve the economic equivalence it would achieve if it were to invest directly in the underlying security. Investments in derivatives may be counted towards the Fund’s 80% investment policy if they have economic characteristics similar to the other investments that are included in the Fund’s 80% investment policy. The Fund intends to use the mark-to-market value of such derivatives for purposes of complying with the Fund’s 80% investment policy.

The Fund may sell a security or reduce its position if it believes:

•The security subsequently fails to meet initial investment criteria;

•A more attractively priced security is found; or

•The security becomes overvalued relative to the long-term expectation.

Strategy Portfolio Concentration [Text]

rr_StrategyPortfolioConcentration

The Fund may invest up to 20% of its net assets in foreign securities.

Risk [Heading]

rr_RiskHeading

Principal Investment Risks

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance Information

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The following performance information provides some indication of the risks of investing in the Fund. The chart shows changes in the Fund’s performance of Institutional Shares from year-to-year. The table shows how the average annual returns of Institutional Shares and Investor Shares for the 1 year, 5 year, and since inception periods compare to the Fund's primary broad-based market index and a secondary index provided to offer additional market perspective. In accordance with new regulatory requirements, the Fund has selected the Russell 1000® Index as the Fund’s new primary benchmark. The Fund’s former primary benchmark, the Russell 1000® Value Index, is also included for comparison.

Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results. Updated performance information is available online at www.brownadvisory.com/mf/beutel-goodman-large-cap-value-fund or by calling 800-540-6807 (toll free) or 414-203-9064.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The following performance information provides some indication of the risks of investing in the Fund.

Performance Additional Market Index [Text]

rr_PerformanceAdditionalMarketIndex

The table shows how the average annual returns of Institutional Shares and Investor Shares for the 1 year, 5 year, and since inception periods compare to the Fund's primary broad-based market index and a secondary index provided to offer additional market perspective.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

800-540-6807

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.brownadvisory.com/mf/beutel-goodman-large-cap-value-fund

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

Performance information represents only past performance, before and after taxes, and does not necessarily indicate future results.

Bar Chart [Heading]

rr_BarChartHeading

Brown Advisory - Beutel Goodman Large-Cap Value Fund – Institutional Shares Annual Total Return

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

The Fund’s calendar year-to-date total return as of September 30, 2024 was 17.46%. During the period shown in the chart, the highest quarterly return was 16.91% (for the quarter ended December 31, 2022) and the lowest quarterly return was -20.42% (for the quarter ended March 31, 2020).

Year to Date Return, Label

rr_YearToDateReturnLabel

year-to-date total return

Bar Chart, Year to Date Return, Date

rr_BarChartYearToDateReturnDate

Sep. 30, 2024

Bar Chart, Year to Date Return

rr_BarChartYearToDateReturn

17.46%

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

highest quarterly return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Dec. 31, 2022

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

16.91%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

lowest quarterly return

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Mar. 31, 2020

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(20.42%)

Performance Table Heading

rr_PerformanceTableHeading

Brown Advisory - Beutel Goodman Large-Cap Value Fund Average Annual Total Returns

Performance Table Market Index Changed

rr_PerformanceTableMarketIndexChanged

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

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.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

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.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown for Institutional Shares only. After-tax returns for Investor Shares will vary.

Performance Table Footnotes, Reason Performance Information for Class Different from Immediately Preceding Period [Text]

rr_PerformanceTableFootnotesReasonPerformanceInformationForClassDifferentFromImmediatelyPrecedingPeriod

Performance shown prior to inception of the Investor Shares is based on the performance of Institutional Shares, adjusted for the higher expenses applicable to Investor Shares.

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

NOTE: The Fund offers two classes of shares. Institutional Shares commenced operations on February 13, 2018, and Investor Shares commenced operations on June 30, 2021. Performance shown prior to inception of the Investor Shares is based on the performance of Institutional Shares, adjusted for the higher expenses applicable to Investor Shares.

Brown Advisory Beutel Goodman Large-Cap Value Fund | Risk Lose Money [Member]

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

As with all mutual funds, there is the risk that you could lose all or a portion of your investment in the Fund.

Brown Advisory Beutel Goodman Large-Cap Value Fund | Risk Not Insured Depository Institution [Member]

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Brown Advisory Beutel Goodman Large-Cap Value Fund | American Depositary Receipts (“ADRs”) Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

American Depositary Receipts (“ADRs”) Risk. ADRs may be subject to some of the same risks as direct investment in foreign companies, which includes international trade, currency, political, regulatory and diplomatic risks. In a sponsored ADR arrangement, the foreign issuer assumes the obligation to pay some or all of the depositary’s transaction fees. Under an unsponsored ADR arrangement, the foreign issuer assumes no obligations and the depositary’s transaction fees are paid directly by the ADR holders. Because unsponsored ADR arrangements are organized independently and without the cooperation of the issuer of the underlying securities, available information concerning the foreign issuer may not be as current as for sponsored ADRs and voting rights with respect to the deposited securities are not passed through.

Brown Advisory Beutel Goodman Large-Cap Value Fund | Convertible Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Beutel Goodman Large-Cap Value Fund | Derivatives Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Beutel Goodman Large-Cap Value Fund | Equity And General Market Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Beutel Goodman Large-Cap Value Fund | ETF Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Beutel Goodman Large-Cap Value Fund | Foreign Securities Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Beutel Goodman Large-Cap Value Fund | Investments in Other Investment Companies Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Beutel Goodman Large-Cap Value Fund | Large Capitalization Company Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Beutel Goodman Large-Cap Value Fund | Management Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Management Risk. The Fund may not meet its investment objective based on the Sub-Adviser’s success or failure to implement investment strategies for the Fund.

Brown Advisory Beutel Goodman Large-Cap Value Fund | Risk Nondiversified Status [Member]

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Non-Diversification Risk. Investment by the Fund in securities of a limited number of issuers exposes it to greater market risk and potential monetary losses than if its assets were diversified among the securities of a greater number of issuers.

Brown Advisory Beutel Goodman Large-Cap Value Fund | Private Placement Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Beutel Goodman Large-Cap Value Fund | REIT And Real Estate Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Beutel Goodman Large-Cap Value Fund | Value Company Risk Member

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Brown Advisory Beutel Goodman Large-Cap Value Fund | Russell 1000® Index (reflects no deduction for fees, expenses and taxes)

Prospectus [Line Items]

rr_ProspectusLineItems

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses and taxes)

Label

rr_AverageAnnualReturnLabel

Russell 1000® Index (reflects no deduction for fees, expenses and taxes)

1 Year

rr_AverageAnnualReturnYear01

26.53%

5 Years

rr_AverageAnnualReturnYear05

15.52%

Since Inception

rr_AverageAnnualReturnSinceInception

12.18%

Inception Date

rr_AverageAnnualReturnInceptionDate

Feb. 13, 2018

Brown Advisory Beutel Goodman Large-Cap Value Fund | Russell 1000® Value Index (reflects no deduction for fees, expenses and taxes)

Prospectus [Line Items]

rr_ProspectusLineItems

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

(reflects no deduction for fees, expenses and taxes)

Label

rr_AverageAnnualReturnLabel

Russell 1000® Value Index (reflects no deduction for fees, expenses and taxes)

1 Year

rr_AverageAnnualReturnYear01

11.46%

5 Years

rr_AverageAnnualReturnYear05

10.91%

Since Inception

rr_AverageAnnualReturnSinceInception

8.00%

Inception Date

rr_AverageAnnualReturnInceptionDate

Feb. 13, 2018

Brown Advisory Beutel Goodman Large-Cap Value Fund | Institutional Shares

Prospectus [Line Items]

rr_ProspectusLineItems

Trading Symbol

dei_TradingSymbol

BVALX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.45%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

none

Other Expenses

rr_Component2OtherExpensesOverAssets

0.09%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[20]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.55%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 56

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

176

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

307

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 689

Annual Return 2019

rr_AnnualReturn2019

29.90%

Annual Return 2020

rr_AnnualReturn2020

11.51%

Annual Return 2021

rr_AnnualReturn2021

14.74%

Annual Return 2022

rr_AnnualReturn2022

2.05%

Annual Return 2023

rr_AnnualReturn2023

12.29%

Label

rr_AverageAnnualReturnLabel

–Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

12.29%

5 Years

rr_AverageAnnualReturnYear05

13.75%

Since Inception

rr_AverageAnnualReturnSinceInception

10.05%

Inception Date

rr_AverageAnnualReturnInceptionDate

Feb. 13, 2018

Brown Advisory Beutel Goodman Large-Cap Value Fund | Institutional Shares | After Taxes on Distributions

Prospectus [Line Items]

rr_ProspectusLineItems

Label

rr_AverageAnnualReturnLabel

–Return After Taxes on Distributions

1 Year

rr_AverageAnnualReturnYear01

11.83%

5 Years

rr_AverageAnnualReturnYear05

12.59%

Since Inception

rr_AverageAnnualReturnSinceInception

8.98%

Brown Advisory Beutel Goodman Large-Cap Value Fund | Institutional Shares | After Taxes on Distributions and Sales

Prospectus [Line Items]

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Label

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–Return After Taxes on Distributions and Sale of Fund Shares

1 Year

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7.61%

5 Years

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10.77%

Since Inception

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7.76%

Brown Advisory Beutel Goodman Large-Cap Value Fund | Investor Shares

Prospectus [Line Items]

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Trading Symbol

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BIAVX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

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none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.45%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.15%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.09%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[20]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.70%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 72

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

224

Expense Example, with Redemption, 5 Years

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390

Expense Example, with Redemption, 10 Years

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$ 871

Label

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–Return Before Taxes

1 Year

rr_AverageAnnualReturnYear01

12.12%

5 Years

rr_AverageAnnualReturnYear05

13.58%

Since Inception

rr_AverageAnnualReturnSinceInception

9.89%

Brown Advisory Beutel Goodman Large-Cap Value Fund | Advisor Shares

Prospectus [Line Items]

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Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.45%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.15%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.09%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[20]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.95%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 97

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

303

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

525

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

$ 1,166

Brown Advisory WMC Japan Equity Fund

Prospectus [Line Items]

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Risk/Return [Heading]

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BROWN ADVISORY - WMC JAPAN EQUITY FUND

Objective [Heading]

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Investment Objective

Objective, Primary [Text Block]

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The Brown Advisory - WMC Japan Equity Fund (the “Fund”) seeks to achieve total return by investing principally in equity securities of companies which are domiciled in or exercise the predominant part of their economic activity in Japan.

Expense [Heading]

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Fees and Expenses

Expense Narrative [Text Block]

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Shareholder Fees Caption [Text]

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Shareholder Fees(fees paid directly from your investment)

Operating Expenses Caption [Text]

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Annual Fund Operating Expenses(expenses that you pay each year as a percentage of the value of your investment)

Portfolio Turnover [Heading]

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Portfolio Turnover

Portfolio Turnover [Text Block]

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

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“Other Expenses” are estimated for the current fiscal year.

Acquired Fund Fees and Expenses, Based on Estimates [Text]

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Expense Example [Heading]

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Example

Expense Example Narrative [Text Block]

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Expense Example by, Year, Caption [Text]

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Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

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Principal Investment Strategies

Strategy Narrative [Text Block]

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Under normal conditions, the Brown Advisory - WMC Japan Equity Fund seeks to achieve its investment objective by investing at least 80% of the value of its net assets (plus any borrowings for investment purposes) in equity securities of companies which are domiciled in or exercise the predominant part of their economic activity in Japan.

In determining whether a company is domiciled in or exercises the predominant part of its economic activity in Japan, the Fund will consider any one of the following four factors when making its determination: (i) country of organization; (ii) primary securities trading market; (iii) location of assets with respect to at least half of the company’s assets; or (iv) country where the company derives at least half of its revenue or profits.

The Fund may invest up to 20% of its net assets in securities of companies that are established or operating in countries outside of Japan, which may include less developed and emerging markets countries as well as other developed market countries.

The Fund may utilize options, futures contracts, currency forwards, swaps and options on futures. These investments will typically be made for investment purposes consistent with the Fund’s investment objective and may also be used to mitigate or hedge risks within the portfolio or for the temporary investment of cash balances. It is expected that the Fund will generally not hedge the portfolio’s Japanese yen exposure. However, the Fund reserves the right to partially or fully hedge the portfolio’s Japanese yen exposure in order to manage risk. The Fund may also opportunistically reduce equity exposure using futures contracts. In addition, the Fund may invest in participatory notes which are instruments that are used to replicate the performance of certain underlying issuers and markets. By investing in derivatives, the Fund attempts to achieve the economic equivalence it would achieve if it were to invest directly in the underlying security. Investments in derivatives may be counted towards the Fund’s 80% investment policy if they have economic characteristics similar to the other investments that are included in the Fund’s 80% investment policy.

The Fund may sell its portfolio securities for a variety of reasons, such as to secure gains, limit losses, or redeploy assets into more promising opportunities.

In order to respond to adverse market, economic, political or other conditions, the Fund may assume a temporary defensive position that is inconsistent with its investment objective and principal investment strategies and invest, without limitation, in cash or prime quality cash equivalents. A defensive position, taken at the wrong time, may have an adverse impact on the Fund’s performance. The Fund may be unable to achieve its investment objective during the employment of a temporary defensive measure.

Strategy Portfolio Concentration [Text]

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Risk [Heading]

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Principal Investment Risks

Bar Chart and Performance Table [Heading]

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Performance Information

Performance Narrative [Text Block]

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Performance information for the Fund is not included because the Fund did not have a full calendar year of performance prior to the date of this Prospectus. Performance information will be available once the Fund has at least one calendar year of performance. Updated performance information is available online at www.brownadvisory.com/mf/wmc-japan-equity-fund or by calling 800-540-6807 (toll free) or 414-203-9064.

Performance Information Illustrates Variability of Returns [Text]

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Performance information for the Fund is not included because the Fund did not have a full calendar year of performance prior to the date of this Prospectus.

Performance One Year or Less [Text]

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Performance information will be available once the Fund has at least one calendar year of performance.

Performance Availability Phone [Text]

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800-540-6807

Performance Availability Website Address [Text]

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www.brownadvisory.com/mf/wmc-japan-equity-fund

Brown Advisory WMC Japan Equity Fund | Risk Lose Money [Member]

Prospectus [Line Items]

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Risk [Text Block]

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As with all mutual funds, there is the risk that you could lose all or a portion of your investment in the Fund.

Brown Advisory WMC Japan Equity Fund | Risk Not Insured Depository Institution [Member]

Prospectus [Line Items]

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Risk [Text Block]

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An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Brown Advisory WMC Japan Equity Fund | American Depositary Receipts (“ADRs”) And Global Depository Receipts (“GDRs”) Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory WMC Japan Equity Fund | Convertible Securities Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory WMC Japan Equity Fund | Currency And Exchange Rate Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory WMC Japan Equity Fund | Derivatives Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory WMC Japan Equity Fund | Emerging Markets Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory WMC Japan Equity Fund | Equity And General Market Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory WMC Japan Equity Fund | ETF Risk Member

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Risk [Text Block]

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Brown Advisory WMC Japan Equity Fund | Foreign Securities Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory WMC Japan Equity Fund | Investments in Other Investment Companies Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory WMC Japan Equity Fund | Japanese Securities Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Japanese Securities Risk. Because a significant portion of the assets of the Fund are invested in Japanese securities, the Fund’s performance is expected to be closely tied to the political, social and economic conditions within Japan. The Japanese economy has at times in the past been negatively affected by government intervention and protectionism, a deflationary macroeconomic environment, a heavy reliance on international trade and natural disasters. These factors, as well as an aging population, increases in government debt and changes to fiscal, monetary, or trade policies, may affect Japanese markets and the Fund’s performance. As such, the Fund’s performance may be more volatile than the performance of funds that are more geographically diverse.

Brown Advisory WMC Japan Equity Fund | Large Capitalization Company Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Large Capitalization Company Risk. Large capitalization companies may be unable to respond quickly to new competitive challenges like changes in consumer tastes or innovative smaller competitors. In addition, large capitalization companies are sometimes unable to attain the high growth rates of successful, smaller companies, especially during extended periods of economic expansion.

Brown Advisory WMC Japan Equity Fund | Large Investor Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Brown Advisory WMC Japan Equity Fund | Liquidity Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Liquidity Risk: Certain securities held by the Fund may be difficult (or impossible) to sell at the time and at the price the Fund would like. As a result, the Fund may have to hold these securities longer than it would like and may forego other investment opportunities. There is the possibility that the Fund may lose money or be prevented from realizing capital gains if it cannot sell a security at a particular time and price.

Brown Advisory WMC Japan Equity Fund | Management Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Management Risk. The Fund may not meet its investment objective based on the Adviser’s success or failure to implement investment strategies for the Fund.

Brown Advisory WMC Japan Equity Fund | Medium Capitalization Company Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Medium Capitalization Company Risk. Securities of medium sized companies may be more volatile and more difficult to liquidate during market down turns than securities of larger companies. Additionally, the price of medium-sized companies may decline more in response to selling pressures.

Brown Advisory WMC Japan Equity Fund | New Fund Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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New Fund Risk. The Fund is new with a limited operating history and there can be no assurance that the Fund will grow to or maintain an economically viable size.

Brown Advisory WMC Japan Equity Fund | REIT And Real Estate Risk Member

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Risk [Text Block]

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Brown Advisory WMC Japan Equity Fund | Smaller Company Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Smaller Company Risk. Securities of companies smaller than larger companies may be more volatile and as a result, the price of smaller companies may decline more in response to selling pressure.

Brown Advisory WMC Japan Equity Fund | Valuation Risk Member

Prospectus [Line Items]

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Risk [Text Block]

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Valuation Risk. The prices provided by pricing services or independent dealers or the fair value determinations made by the Adviser may be different from the prices used by other mutual funds or from the prices at which securities are actually bought and sold. The prices of certain securities provided by pricing services may be subject to frequent and significant change and will vary depending on the information that is available.

Brown Advisory WMC Japan Equity Fund | Advisor Shares

Prospectus [Line Items]

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Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.80%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.15%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.18%

^[21]

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[22]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

1.39%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 142

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

$ 440

Brown Advisory WMC Japan Equity Fund | Institutional Shares

Prospectus [Line Items]

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Trading Symbol

dei_TradingSymbol

BAFJX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.80%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

none

Other Expenses

rr_Component2OtherExpensesOverAssets

0.18%

^[21]

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[22]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

0.99%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 101

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

$ 315

Brown Advisory WMC Japan Equity Fund | Investor Shares

Prospectus [Line Items]

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Trading Symbol

dei_TradingSymbol

BIJEX

Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (as a percentage of Offering Price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Redemption Fee (as a percentage of Amount Redeemed)

rr_RedemptionFeeOverRedemption

(1.00%)

Exchange Fee (as a percentage of Amount Redeemed)

rr_ExchangeFeeOverRedemption

1.00%

Management Fees (as a percentage of Assets)

rr_ManagementFeesOverAssets

0.80%

Distribution and Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Shareholder Servicing Fees

rr_Component1OtherExpensesOverAssets

0.15%

Other Expenses

rr_Component2OtherExpensesOverAssets

0.18%

^[21]

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

^[22]

Expenses (as a percentage of Assets)

rr_ExpensesOverAssets

1.14%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

$ 116

Expense Example, with Redemption, 3 Years

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$ 362

[1]	Acquired Fund Fees and Expenses are indirect fees and expenses that the Fund incurs from investing in the shares of other mutual funds, including money market funds and exchange traded funds. Please note that the amount of Total Annual Fund Operating Expenses shown in the above table will differ from the “Financial Highlights” section of the Prospectus, which reflects the operating expenses of the Fund and does not include indirect expenses such as Acquired Fund Fees and Expenses.
[2]	Acquired Fund Fees and Expenses are indirect fees and expenses that the Fund incurs from investing in the shares of other mutual funds, including money market funds and exchange traded funds. Please note that the amount of Total Annual Fund Operating Expenses shown in the above table will differ from the “Financial Highlights” section of the Prospectus, which reflects the operating expenses of the Fund and does not include indirect expenses such as Acquired Fund Fees and Expenses.
[3]	Acquired Fund Fees and Expenses are indirect fees and expenses that the Fund incurs from investing in the shares of other mutual funds, including money market funds and exchange traded funds. Please note that the amount of Total Annual Fund Operating Expenses shown in the above table will differ from the “Financial Highlights” section of the Prospectus, which reflects the operating expenses of the Fund and does not include indirect expenses such as Acquired Fund Fees and Expenses.
[4]	Brown Advisory LLC (the “Adviser”) has contractually agreed to waive its fees and/or reimburse certain expenses (exclusive of any front-end or contingent deferred sales loads, taxes, interest, brokerage commissions, acquired fund fees and expenses, expenses incurred in connection with any merger or reorganization and extraordinary expenses) in order to limit the Total Annual Fund Operating Expenses after Fee Waiver and/or Expense Reimbursement for Institutional Shares, Investor Shares and Advisor Shares to 0.82%, 0.97% and 1.22%, respectively, of the Fund’s average daily net assets through October 31, 2025. The Fund may have Total Annual Fund Operating Expenses after Fee Waiver and/or Expense Reimbursement higher than these expense caps as a result of any acquired fund fees and expenses or other expenses that are excluded from the calculation. The contractual waivers and expense reimbursements may be changed or eliminated at any time by the Board of Trustees, on behalf of the Fund, upon 60 days written notice to the Adviser. The contractual waivers and expense reimbursements may not be terminated by the Adviser without the consent of the Board of Trustees. The Adviser may recoup any waived amount from the Fund pursuant to this agreement if such reimbursement does not cause the Fund to exceed existing expense limitations or the limitations in place at the time the reduction was originally made and the reimbursement is made within three years after the date on which the Adviser incurred the expense.
[5]	Acquired Fund Fees and Expenses are indirect fees and expenses that the Fund incurs from investing in the shares of other mutual funds, including money market funds and exchange traded funds. Please note that the amount of Total Annual Fund Operating Expenses shown in the above table will differ from the “Financial Highlights” section of the Prospectus, which reflects the operating expenses of the Fund and does not include indirect expenses such as Acquired Fund Fees and Expenses.
[6]	Acquired Fund Fees and Expenses are indirect fees and expenses that the Fund incurs from investing in the shares of other mutual funds, including money market funds and exchange traded funds. Please note that the amount of Total Annual Fund Operating Expenses shown in the above table will differ from the “Financial Highlights” section of the Prospectus, which reflects the operating expenses of the Fund and does not include indirect expenses such as Acquired Fund Fees and Expenses.
[7]	Brown Advisory LLC (the "Adviser") has contractually agreed to waive its fees and/or reimburse certain expenses (exclusive of any front-end or contingent deferred sales loads, taxes, interest, brokerage commissions, acquired fund fees and expenses, expenses incurred in connection with any merger or reorganization and extraordinary expenses) in order to limit the Total Annual Fund Operating Expenses after Fee Waiver and/or Expense Reimbursement for Institutional Shares, Investor Shares and Advisor Shares to 0.93%, 1.08% and 1.33%, respectively, of the Fund’s average daily net assets through October 31, 2025. The Fund may have Total Annual Fund Operating Expenses after Fee Waiver and/or Expense Reimbursement higher than these expense caps as a result of any acquired fund fees and expenses or other expenses that are excluded from the calculation. The contractual waivers and expense reimbursements may be changed or eliminated at any time by the Board of Trustees, on behalf of the Fund, upon 60 days written notice to the Adviser. The contractual waivers and expense reimbursements may not be terminated by the Adviser without the consent of the Board of Trustees. The Adviser may recoup any waived amount from the Fund pursuant to this agreement if such reimbursement does not cause the Fund to exceed existing expense limitations or the limitations in place at the time the reduction was originally made and the reimbursement is made within three years after the date on which the Adviser incurred the expense.
[8]	Acquired Fund Fees and Expenses are indirect fees and expenses that the Fund incurs from investing in the shares of other mutual funds, including money market funds and exchange traded funds. Please note that the amount of Total Annual Fund Operating Expenses shown in the above table will differ from the “Financial Highlights” section of the Prospectus, which reflects the operating expenses of the Fund and does not include indirect expenses such as Acquired Fund Fees and Expenses.
[9]	Brown Advisory LLC (the "Adviser") has contractually agreed to waive its fees and/or reimburse certain expenses (exclusive of any front-end or contingent deferred sales loads, taxes, interest, brokerage commissions, acquired fund fees and expenses, expenses incurred in connection with any merger or reorganization and extraordinary expenses) in order to limit the Total Annual Fund Operating Expenses after Fee Waiver and/or Expense Reimbursement for Institutional Shares, Investor Shares and Advisor Shares to 0.70%, 0.85% and 1.10%, respectively, of the Fund’s average daily net assets through October 31, 2025. The Fund may have Total Annual Fund Operating Expenses after Fee Waiver and/or Expense Reimbursement higher than these expense caps as a result of any acquired fund fees and expenses or other expenses that are excluded from the calculation. The contractual waivers and expense reimbursements may be changed or eliminated at any time by the Board of Trustees, on behalf of the Fund, upon 60 days written notice to the Adviser. The contractual waivers and expense reimbursements may not be terminated by the Adviser without the consent of the Board of Trustees. The Adviser may recoup any waived amount from the Fund pursuant to this agreement if such reimbursement does not cause the Fund to exceed existing expense limitations or the limitations in place at the time the reduction was originally made and the reimbursement is made within three years after the date on which the Adviser incurred the expense.
[10]	Acquired Fund Fees and Expenses are indirect fees and expenses that the Fund incurs from investing in the shares of other mutual funds, including money market funds and exchange traded funds. Please note that the amount of Total Annual Fund Operating Expenses shown in the above table will differ from the “Financial Highlights” section of the Prospectus, which reflects the operating expenses of the Fund and does not include indirect expenses such as Acquired Fund Fees and Expenses.
[11]	Acquired Fund Fees and Expenses are indirect fees and expenses that the Fund incurs from investing in the shares of other mutual funds, including money market funds and exchange traded funds. Please note that the amount of Total Annual Fund Operating Expenses shown in the above table will differ from the “Financial Highlights” section of the Prospectus, which reflects the operating expenses of the Fund and does not include indirect expenses such as Acquired Fund Fees and Expenses.
[12]	Brown Advisory LLC (the "Adviser") has contractually agreed to waive its fees and/or reimburse certain expenses (exclusive of any front-end or contingent deferred sales loads, taxes, interest, brokerage commissions, acquired fund fees and expenses, expenses incurred in connection with any merger or reorganization and extraordinary expenses) in order to limit the Total Annual Fund Operating Expenses after Fee Waiver and/or Expense Reimbursement for Institutional Shares, Investor Shares and Advisor Shares to 0.85%, 1.00% and 1.25%, respectively, of the Fund’s average daily net assets through October 31, 2025. The Fund may have Total Annual Fund Operating Expenses after Fee Waiver and/or Expense Reimbursement higher than these expense caps as a result of any acquired fund fees and expenses or other expenses that are excluded from the calculation. The contractual waivers and expense reimbursements may be changed or eliminated at any time by the Board of Trustees, on behalf of the Fund, upon 60 days written notice to the Adviser. The contractual waivers and expense reimbursements may not be terminated by the Adviser without the consent of the Board of Trustees. The Adviser may recoup any waived amount from the Fund pursuant to this agreement if such reimbursement does not cause the Fund to exceed existing expense limitations or the limitations in place at the time the reduction was originally made and the reimbursement is made within three years after the date on which the Adviser incurred the expense.
[13]	Acquired Fund Fees and Expenses are indirect fees and expenses that the Fund incurs from investing in the shares of other mutual funds, including money market funds and exchange traded funds. Please note that the amount of Total Annual Fund Operating Expenses shown in the above table will differ from the “Financial Highlights” section of the Prospectus which reflects the operating expenses of the Fund and does not include indirect expenses such as Acquired Fund Fees and Expenses.
[14]	Brown Advisory LLC (the “Adviser”) has contractually agreed to waive all or any portion of the advisory fee that would otherwise be paid by the Fund to the Adviser in an amount equal to the separate advisory fee indirectly paid by the Fund to the Brown Advisory Mortgage Securities Fund. The contractual waiver may be changed or eliminated at any time by the Board of Trustees, on behalf of the Fund, upon 60 days written notice to the Adviser. The contractual waivers may not be terminated by the Adviser without the consent of the Board of Trustees.
[15]	Acquired Fund Fees and Expenses are indirect fees and expenses that the Fund incurs from investing in the shares of other mutual funds, including money market funds and exchange traded funds. Please note that the amount of Total Annual Fund Operating Expenses shown in the above table will differ from the “Financial Highlights” section of the Prospectus which reflects the operating expenses of the Fund and does not include indirect expenses such as Acquired Fund Fees and Expenses.
[16]	Acquired Fund Fees and Expenses are indirect fees and expenses that the Fund incurs from investing in the shares of other mutual funds, including money market funds and exchange traded funds. Please note that the amount of Total Annual Fund Operating Expenses shown in the above table will differ from the “Financial Highlights” section of the Prospectus, which reflects the operating expenses of the Fund and does not include indirect expenses such as Acquired Fund Fees and Expenses.
[17]	Acquired Fund Fees and Expenses are indirect fees and expenses that the Fund incurs from investing in the shares of other mutual funds, including money market funds and exchange traded funds. Please note that the amount of Total Annual Fund Operating Expenses shown in the above table will differ from the “Financial Highlights” section of the Prospectus, which reflects the operating expenses of the Fund and does not include indirect expenses such as Acquired Fund Fees and Expenses.
[18]	Acquired Fund Fees and Expenses are indirect fees and expenses that the Fund incurs from investing in the shares of other mutual funds, including money market funds and exchange traded funds. Please note that the amount of Total Annual Fund Operating Expenses shown in the above table will differ from the “Financial Highlights” section of the Prospectus, which reflects the operating expenses of the Fund and does not include indirect expenses such as Acquired Fund Fees and Expenses.
[19]	Acquired Fund Fees and Expenses are indirect fees and expenses that the Fund incurs from investing in the shares of other mutual funds, including money market funds and exchange traded funds. Please note that the amount of Total Annual Fund Operating Expenses shown in the above table will differ from the “Financial Highlights” section of the Prospectus which reflects the operating expenses of the Fund and does not include indirect expenses such as Acquired Fund Fees and Expenses.
[20]	Acquired Fund Fees and Expenses are indirect fees and expenses that the Fund incurs from investing in the shares of other mutual funds, including money market funds and exchange traded funds. Please note that the amount of Total Annual Fund Operating Expenses shown in the above table will differ from the “Financial Highlights” section of the Prospectus which reflects the operating expenses of the Fund and does not include indirect expenses such as Acquired Fund Fees and Expenses.
[21]	“Other Expenses” are estimated for the current fiscal year.
[22]	Acquired Fund Fees and Expenses are indirect fees and expenses that the Fund incurs from investing in the shares of other mutual funds, including money market funds and exchange traded funds, and are estimated for the current fiscal year.