v3.25.2
Shareholder Report
12 Months Ended
Jun. 30, 2025
USD ($)
$ / shares
Shareholder Report [Line Items]  
Document Type N-CSR
Amendment Flag false
Registrant Name Brown Advisory Funds
Entity Central Index Key 0001548609
Entity Investment Company Type N-1A
Document Period End Date Jun. 30, 2025
Institutional Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory Growth Equity Fund
Class Name Institutional Shares
Trading Symbol BAFGX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory Growth Equity Fund (the“Fund”) for the period of  July 1, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Institutional Shares
$76
0.71%
Expenses Paid, Amount $ 76
Expense Ratio, Percent 0.71%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 12-month period ended June 30, 2025, the Fund underperformed its benchmark, the Russell 1000® Index.
WHAT FACTORS INFLUENCED PERFORMANCE
The Fund’s underperformance was driven primarily by the Information Technology sector, mainly due to not owning Broadcom. While we recognize the strength of Broadcom’s business model, we believe the company’s most compelling growth segments—such as data center optics and semi-custom data center silicon—are also core areas of expertise for Marvell, a current Fund holding. The Industrials sector was the best-performing sector both in absolute terms and relative to the benchmark, driven by Uber Technologies, a global mobility platform. The stock has traded sharply higher in 2025 as Uber continues to demonstrate strength in its core rideshare and delivery businesses.
POSITIONING
The Fund’s allocation to Communication Services shifted from an underweight to an overweight position during the period, primarily due to the addition of Meta Platforms, Trade Desk, and Netflix. The Fund’s exposure to Health Care decreased during the period as a result of exiting positions in Thermo Fisher Scientific, Edwards Lifesciences, and Align Technology. Align Technology continues to face subdued revenue growth as macroeconomic uncertainty weighs on consumers’ willingness to spend on discretionary items like teeth aligners, particularly in the adult category.
Top Contributors
Netflix, Inc.
NVIDIA Corporation
ServiceNow, Inc.
Uber Technologies, Inc.
Progressive Corporation
Top Detractors
Edwards Lifesciences Corporation
Trade Desk, Inc. Class A
Adobe Inc.
Align Technology, Inc.
West Pharmaceutical Services, Inc.
PERFORMANCE
The Fund delivered strong absolute performance during the period, underperforming the benchmark.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
ANNUAL AVERAGE TOTAL RETURN (%)
 
1 Year
5 Year
10 Year
Institutional Shares
14.50
9.93
13.01
Russell 1000® Index
15.66
16.30
13.35
Russell 1000® Growth Index
17.32
18.17
17.02
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/funds/growth-equity-fund for recent performance information.
Net Assets $ 644,860,049
Holdings Count | $ / shares 34
Advisory Fees Paid, Amount $ 5,213,858
Investment Company Portfolio Turnover 27.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$644,860,049
Number of Holdings
34
Net Advisory Fee
$5,213,858
Portfolio Turnover
27%
Holdings [Text Block]
Top Sectors*
(%)
Information Technology
34.1%
Industrials
16.0%
Communication Services
13.3%
Consumer Discretionary
10.3%
Health Care
9.3%
Financials
8.2%
Consumer Staples
4.1%
Real Estate
2.4%
Cash & Other
2.3%
Top 10 Issuers
(%)
NVIDIA Corp.
5.1%
Microsoft Corp.
4.5%
Amazon.com, Inc.
4.4%
Netflix, Inc.
4.2%
Meta Platforms, Inc.
4.2%
Costco Wholesale Corp.
4.1%
Uber Technologies, Inc.
4.1%
Hilton Worldwide Holdings, Inc.
3.9%
Mastercard, Inc.
3.8%
Intuit, Inc.
3.7%
[1]
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Investor Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory Growth Equity Fund
Class Name Investor Shares
Trading Symbol BIAGX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory Growth Equity Fund (the“Fund”) for the period of  July 1, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Investor Shares
$92
0.86%
Expenses Paid, Amount $ 92
Expense Ratio, Percent 0.86%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 12-month period ended June 30, 2025, the Fund underperformed its benchmark, the Russell 1000® Index.
WHAT FACTORS INFLUENCED PERFORMANCE
The Fund’s underperformance was driven primarily by the Information Technology sector, mainly due to not owning Broadcom. While we recognize the strength of Broadcom’s business model, we believe the company’s most compelling growth segments—such as data center optics and semi-custom data center silicon—are also core areas of expertise for Marvell, a current Fund holding. The Industrials sector was the best-performing sector both in absolute terms and relative to the benchmark, driven by Uber Technologies, a global mobility platform. The stock has traded sharply higher in 2025 as Uber continues to demonstrate strength in its core rideshare and delivery businesses.
POSITIONING
The Fund’s allocation to Communication Services shifted from an underweight to an overweight position during the period, primarily due to the addition of Meta Platforms, Trade Desk, and Netflix. The Fund’s exposure to Health Care decreased during the period as a result of exiting positions in Thermo Fisher Scientific, Edwards Lifesciences, and Align Technology. Align Technology continues to face subdued revenue growth as macroeconomic uncertainty weighs on consumers’ willingness to spend on discretionary items like teeth aligners, particularly in the adult category.
Top Contributors
Netflix, Inc.
NVIDIA Corporation
ServiceNow, Inc.
Uber Technologies, Inc.
Progressive Corporation
Top Detractors
Edwards Lifesciences Corporation
Trade Desk, Inc. Class A
Adobe Inc.
Align Technology, Inc.
West Pharmaceutical Services, Inc.
PERFORMANCE
The Fund delivered strong absolute performance during the period, underperforming the benchmark.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
ANNUAL AVERAGE TOTAL RETURN (%)
 
1 Year
5 Year
10 Year
Investor Shares
14.34
9.77
12.84
Russell 1000® Index
15.66
16.30
13.35
Russell 1000® Growth Index
17.32
18.17
17.02
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/funds/growth-equity-fund for recent performance information.
Net Assets $ 644,860,049
Holdings Count | $ / shares 34
Advisory Fees Paid, Amount $ 5,213,858
Investment Company Portfolio Turnover 27.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$644,860,049
Number of Holdings
34
Net Advisory Fee
$5,213,858
Portfolio Turnover
27%
Holdings [Text Block]
Top Sectors*
(%)
Information Technology
34.1%
Industrials
16.0%
Communication Services
13.3%
Consumer Discretionary
10.3%
Health Care
9.3%
Financials
8.2%
Consumer Staples
4.1%
Real Estate
2.4%
Cash & Other
2.3%
Top 10 Issuers
(%)
NVIDIA Corp.
5.1%
Microsoft Corp.
4.5%
Amazon.com, Inc.
4.4%
Netflix, Inc.
4.2%
Meta Platforms, Inc.
4.2%
Costco Wholesale Corp.
4.1%
Uber Technologies, Inc.
4.1%
Hilton Worldwide Holdings, Inc.
3.9%
Mastercard, Inc.
3.8%
Intuit, Inc.
3.7%
[2]
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Advisor Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory Growth Equity Fund
Class Name Advisor Shares
Trading Symbol BAGAX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory Growth Equity Fund (the“Fund”) for the period of  July 1, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Advisor Shares
$119
1.11%
Expenses Paid, Amount $ 119
Expense Ratio, Percent 1.11%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 12-month period ended June 30, 2025, the Fund underperformed its benchmark, the Russell 1000® Index.
WHAT FACTORS INFLUENCED PERFORMANCE
The Fund’s underperformance was driven primarily by the Information Technology sector, mainly due to not owning Broadcom. While we recognize the strength of Broadcom’s business model, we believe the company’s most compelling growth segments—such as data center optics and semi-custom data center silicon—are also core areas of expertise for Marvell, a current Fund holding. The Industrials sector was the best-performing sector both in absolute terms and relative to the benchmark, driven by Uber Technologies, a global mobility platform. The stock has traded sharply higher in 2025 as Uber continues to demonstrate strength in its core rideshare and delivery businesses.
POSITIONING
The Fund’s allocation to Communication Services shifted from an underweight to an overweight position during the period, primarily due to the addition of Meta Platforms, Trade Desk, and Netflix. The Fund’s exposure to Health Care decreased during the period as a result of exiting positions in Thermo Fisher Scientific, Edwards Lifesciences, and Align Technology. Align Technology continues to face subdued revenue growth as macroeconomic uncertainty weighs on consumers’ willingness to spend on discretionary items like teeth aligners, particularly in the adult category.
Top Contributors
Netflix, Inc.
NVIDIA Corporation
ServiceNow, Inc.
Uber Technologies, Inc.
Progressive Corporation
Top Detractors
Edwards Lifesciences Corporation
Trade Desk, Inc. Class A
Adobe Inc.
Align Technology, Inc.
West Pharmaceutical Services, Inc.
PERFORMANCE
The Fund delivered strong absolute performance during the period, underperforming the benchmark.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
ANNUAL AVERAGE TOTAL RETURN (%)
 
1 Year
5 Year
10 Year
Advisor Shares
14.04
9.50
12.56
Russell 1000® Index
15.66
16.30
13.35
Russell 1000® Growth Index
17.32
18.17
17.02
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/funds/growth-equity-fund for recent performance information.
Net Assets $ 644,860,049
Holdings Count | $ / shares 34
Advisory Fees Paid, Amount $ 5,213,858
Investment Company Portfolio Turnover 27.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$644,860,049
Number of Holdings
34
Net Advisory Fee
$5,213,858
Portfolio Turnover
27%
Holdings [Text Block]
Top Sectors*
(%)
Information Technology
34.1%
Industrials
16.0%
Communication Services
13.3%
Consumer Discretionary
10.3%
Health Care
9.3%
Financials
8.2%
Consumer Staples
4.1%
Real Estate
2.4%
Cash & Other
2.3%
Top 10 Issuers
(%)
NVIDIA Corp.
5.1%
Microsoft Corp.
4.5%
Amazon.com, Inc.
4.4%
Netflix, Inc.
4.2%
Meta Platforms, Inc.
4.2%
Costco Wholesale Corp.
4.1%
Uber Technologies, Inc.
4.1%
Hilton Worldwide Holdings, Inc.
3.9%
Mastercard, Inc.
3.8%
Intuit, Inc.
3.7%
[3]
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Institutional Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory Flexible Equity Fund
Class Name Institutional Shares
Trading Symbol BAFFX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory Flexible Equity Fund (the“Fund”) for the period of  July 1, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Institutional Shares
$56
0.52%
Expenses Paid, Amount $ 56
Expense Ratio, Percent 0.52%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 12-month period ended June 30, 2025, the Fund outperformed its benchmark, the S&P 500® Index.
While the market’s finish to the year was strong, the journey from start to finish was far from smooth. The period saw a sharp 19% drawdown from its February high on April 8th, primarily driven by fears of an all-out trade war. However, the S&P 500® Index recovered from its April low and the year ended at a new high.
WHAT FACTORS INFLUENCED PERFORMANCE
Sector allocation had a larger effect on the portfolio. The performance of the Fund was driven by Consumer Discretionary, Energy and Financials sectors. Meta Platforms, Amer Sports and Visa were top contributors. The Health Care sector was the Fund’s largest detractor. Within the sector, UnitedHealth Group detracted the most from the return.
POSITIONING
The Consumer Staples sector weighting increased with the addition of Mondelez International. The Energy sector weighting fell with the sale of Baker Hughes. The Health Care weighting was lower with the decline in the sector return and the elimination of Agilent Technologies and Merck & Co. The Industrials weighting was higher with the new investment in Old Dominion Freight Line as well as additions to existing holdings. In Real Estate, we eliminated SBA Communications bringing the sector weighting down to zero.
Top Contributors
Meta Platforms Inc Class A
Amer Sports, Inc.
Visa Inc. Class A
KKR & Co Inc
Taiwan Semiconductor Manufacturing Co., Ltd. Sponsored ADR
Top Detractors
UnitedHealth Group Incorporated
Elevance Health, Inc.
Adobe Inc.
Edwards Lifesciences Corporation
Illumina, Inc.
PERFORMANCE
The Fund’s return exceeded the S&P 500® Index.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
ANNUAL AVERAGE TOTAL RETURN (%)
 
1 Year
5 Year
10 Year
Institutional Shares
15.41
16.56
13.87
S&P 500® Index
15.16
16.64
13.65
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/funds/flexible-equity-fund for recent performance information.
Net Assets $ 1,031,226,798
Holdings Count | $ / shares 46
Advisory Fees Paid, Amount $ 4,143,680
Investment Company Portfolio Turnover 17.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$1,031,226,798
Number of Holdings
46
Net Advisory Fee
$4,143,680
Portfolio Turnover
17%
Holdings [Text Block]
Top Sectors*
(%)
Financials
27.1%
Information Technology
24.0%
Communication Services
12.1%
Consumer Discretionary
11.6%
Industrials
10.4%
Health Care
8.8%
Consumer Staples
2.1%
Energy
1.9%
Cash & Other
2.0%
Top 10 Issuers
(%)
Microsoft Corp.
7.3%
Meta Platforms, Inc.
6.1%
Alphabet, Inc.
4.8%
Visa, Inc.
4.7%
Mastercard, Inc.
4.4%
Taiwan Semiconductor Manufacturing Co., Ltd.
4.3%
Amazon.com, Inc.
4.3%
KKR & Co., Inc.
4.2%
Berkshire Hathaway, Inc.
3.6%
Intuit, Inc.
2.9%
[4]
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Investor Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory Flexible Equity Fund
Class Name Investor Shares
Trading Symbol BIAFX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory Flexible Equity Fund (the“Fund”) for the period of  July 1, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Investor Shares
$72
0.67%
Expenses Paid, Amount $ 72
Expense Ratio, Percent 0.67%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 12-month period ended June 30, 2025, the Fund outperformed its benchmark, the S&P 500® Index.
While the market’s finish to the year was strong, the journey from start to finish was far from smooth. The period saw a sharp 19% drawdown from its February high on April 8th, primarily driven by fears of an all-out trade war. However, the S&P 500® Index recovered from its April low and the year ended at a new high.
WHAT FACTORS INFLUENCED PERFORMANCE
Sector allocation had a larger effect on the portfolio. The performance of the Fund was driven by Consumer Discretionary, Energy and Financials sectors. Meta Platforms, Amer Sports and Visa were top contributors. The Health Care sector was the Fund’s largest detractor. Within the sector, UnitedHealth Group detracted the most from the return.
POSITIONING
The Consumer Staples sector weighting increased with the addition of Mondelez International. The Energy sector weighting fell with the sale of Baker Hughes. The Health Care weighting was lower with the decline in the sector return and the elimination of Agilent Technologies and Merck & Co. The Industrials weighting was higher with the new investment in Old Dominion Freight Line as well as additions to existing holdings. In Real Estate, we eliminated SBA Communications bringing the sector weighting down to zero.
Top Contributors
Meta Platforms Inc Class A
Amer Sports, Inc.
Visa Inc. Class A
KKR & Co Inc
Taiwan Semiconductor Manufacturing Co., Ltd. Sponsored ADR
Top Detractors
UnitedHealth Group Incorporated
Elevance Health, Inc.
Adobe Inc.
Edwards Lifesciences Corporation
Illumina, Inc.
PERFORMANCE
The Fund’s return exceeded the S&P 500® Index.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
ANNUAL AVERAGE TOTAL RETURN (%)
 
1 Year
5 Year
10 Year
Investor Shares
15.22
16.39
13.69
S&P 500® Index
15.16
16.64
13.65
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/funds/flexible-equity-fund for recent performance information.
Net Assets $ 1,031,226,798
Holdings Count | $ / shares 46
Advisory Fees Paid, Amount $ 4,143,680
Investment Company Portfolio Turnover 17.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$1,031,226,798
Number of Holdings
46
Net Advisory Fee
$4,143,680
Portfolio Turnover
17%
Holdings [Text Block]
Top Sectors*
(%)
Financials
27.1%
Information Technology
24.0%
Communication Services
12.1%
Consumer Discretionary
11.6%
Industrials
10.4%
Health Care
8.8%
Consumer Staples
2.1%
Energy
1.9%
Cash & Other
2.0%
Top 10 Issuers
(%)
Microsoft Corp.
7.3%
Meta Platforms, Inc.
6.1%
Alphabet, Inc.
4.8%
Visa, Inc.
4.7%
Mastercard, Inc.
4.4%
Taiwan Semiconductor Manufacturing Co., Ltd.
4.3%
Amazon.com, Inc.
4.3%
KKR & Co., Inc.
4.2%
Berkshire Hathaway, Inc.
3.6%
Intuit, Inc.
2.9%
[5]
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Advisor Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory Flexible Equity Fund
Class Name Advisor Shares
Trading Symbol BAFAX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory Flexible Equity Fund (the“Fund”) for the period of  July 1, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Advisor Shares
$99
0.92%
Expenses Paid, Amount $ 99
Expense Ratio, Percent 0.92%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 12-month period ended June 30, 2025, the Fund underperformed its benchmark, the S&P 500® Index.
While the market’s finish to the year was strong, the journey from start to finish was far from smooth. The period saw a sharp 19% drawdown from its February high on April 8th, primarily driven by fears of an all-out trade war. However, the S&P 500® Index recovered from its April low and the year ended at a new high.
WHAT FACTORS INFLUENCED PERFORMANCE
Sector allocation had a larger effect on the portfolio. The performance of the Fund was driven by Consumer Discretionary, Energy and Financials sectors. Meta Platforms, Amer Sports and Visa were top contributors. The Health Care sector was the Fund’s largest detractor. Within the sector, UnitedHealth Group detracted the most from the return.
POSITIONING
The Consumer Staples sector weighting increased with the addition of Mondelez International. The Energy sector weighting fell with the sale of Baker Hughes. The Health Care weighting was lower with the decline in the sector return and the elimination of Agilent Technologies and Merck & Co. The Industrials weighting was higher with the new investment in Old Dominion Freight Line as well as additions to existing holdings. In Real Estate, we eliminated SBA Communications bringing the sector weighting down to zero.
Top Contributors
Meta Platforms Inc Class A
Amer Sports, Inc.
Visa Inc. Class A
KKR & Co Inc
Taiwan Semiconductor Manufacturing Co., Ltd. Sponsored ADR
Top Detractors
UnitedHealth Group Incorporated
Elevance Health, Inc.
Adobe Inc.
Edwards Lifesciences Corporation
Illumina, Inc.
PERFORMANCE
The Fund’s return was less than the S&P 500® Index.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
ANNUAL AVERAGE TOTAL RETURN (%)
 
1 Year
5 Year
10 Year
Advisor Shares
14.93
16.09
13.41
S&P 500® Index
15.16
16.64
13.65
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/funds/flexible-equity-fund for recent performance information.
Net Assets $ 1,031,226,798
Holdings Count | $ / shares 46
Advisory Fees Paid, Amount $ 4,143,680
Investment Company Portfolio Turnover 17.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$1,031,226,798
Number of Holdings
46
Net Advisory Fee
$4,143,680
Portfolio Turnover
17%
Holdings [Text Block]
Top Sectors*
(%)
Financials
27.1%
Information Technology
24.0%
Communication Services
12.1%
Consumer Discretionary
11.6%
Industrials
10.4%
Health Care
8.8%
Consumer Staples
2.1%
Energy
1.9%
Cash & Other
2.0%
Top 10 Issuers
(%)
Microsoft Corp.
7.3%
Meta Platforms, Inc.
6.1%
Alphabet, Inc.
4.8%
Visa, Inc.
4.7%
Mastercard, Inc.
4.4%
Taiwan Semiconductor Manufacturing Co., Ltd.
4.3%
Amazon.com, Inc.
4.3%
KKR & Co., Inc.
4.2%
Berkshire Hathaway, Inc.
3.6%
Intuit, Inc.
2.9%
[6]
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Institutional Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory Sustainable Growth Fund
Class Name Institutional Shares
Trading Symbol BAFWX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory Sustainable Growth Fund (the“Fund”) for the period of  July 1, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Institutional Shares
$63
0.60%
Expenses Paid, Amount $ 63
Expense Ratio, Percent 0.60%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 12-month period ended June 30, 2025, the Fund underperformed its benchmark, the Russell 1000® Index.
WHAT FACTORS INFLUENCED PERFORMANCE
During the period, sector positioning had a positive effect on relative returns against the Russell 1000® Index, while stock selection was detractive. From a sector allocation perspective, the strategy benefited from its overweight in financials and lack of exposure to energy, which outweighed the negative effects of our underweight to communication services. Inclusive of stock selection and interaction, strong performance from our financials and information technology names was not enough to overcome weakness from our health care and communication services names. Within financials, our favorable positioning and stock selection within the insurance and asset management industries were a key driver of absolute returns, with PGR, AJG, KKR and ARES all among the top performers during the period. The strategy’s sector exposures result from bottom-up stock-picking, not sector preferences or macro inputs.
POSITIONING
Consistent with the strategy’s long-standing portfolio construction philosophy, we continued to balance exposure between durable and rapid growth companies while ensuring diversification by business model, end market, and growth theme. Trading activity increased  slightly, with ten name swaps and a number of strategic position re-sizing trades to  optimize the ratio of upside potential to downside risk at the security and portfolio  levels. We believe these trades represent upgrades to the portfolio that will better position the strategy for future success.
Top Contributors
NVIDIA Corporation
ServiceNow, Inc.
Visa Inc. Class A
Microsoft Corporation
Progressive Corporation
Top Detractors
Edwards Lifesciences Corporation
West Pharmaceutical Services, Inc.
Trade Desk, Inc. Class A
Danaher Corporation
Thermo Fisher Scientific Inc.
PERFORMANCE
The Fund’s underperformance was largely driven by weakness in our health care, consumer discretionary, and communication services names.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
ANNUAL AVERAGE TOTAL RETURN (%)
 
1 Year
5 Year
10 Year
Institutional Shares
11.02
14.21
16.07
Russell 1000® Index
15.66
16.30
13.35
Russell 1000® Growth Index
17.32
18.17
17.02
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/funds/sustainable-growth-fund for recent performance information.
Net Assets $ 9,027,770,024
Holdings Count | $ / shares 34
Advisory Fees Paid, Amount $ 47,705,230
Investment Company Portfolio Turnover 32.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$9,027,770,024
Number of Holdings
34
Net Advisory Fee
$47,705,230
Portfolio Turnover
32%
Holdings [Text Block]
Top Sectors*
(%)
Information Technology
45.4%
Financials
19.1%
Consumer Discretionary
11.7%
Industrials
10.9%
Health Care
6.3%
Communication Services
2.9%
Materials
1.7%
Cash & Other
2.0%
Top 10 Issuers
(%)
NVIDIA Corp.
8.8%
Microsoft Corp.
8.6%
Amazon.com, Inc.
7.4%
Intuit, Inc.
4.4%
Visa, Inc.
4.0%
KKR & Co., Inc.
3.9%
Marvell Technology, Inc.
3.5%
Progressive Corp.
3.4%
ServiceNow, Inc.
3.1%
Arthur J Gallagher & Co.
2.9%
[7]
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Investor Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory Sustainable Growth Fund
Class Name Investor Shares
Trading Symbol BIAWX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory Sustainable Growth Fund (the“Fund”) for the period of  July 1, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Investor Shares
$79
0.75%
Expenses Paid, Amount $ 79
Expense Ratio, Percent 0.75%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 12-month period ended June 30, 2025, the Fund underperformed its benchmark, the Russell 1000® Index.
WHAT FACTORS INFLUENCED PERFORMANCE
During the period, sector positioning had a positive effect on relative returns against the Russell 1000® Index, while stock selection was detractive. From a sector allocation perspective, the strategy benefited from its overweight in financials and lack of exposure to energy, which outweighed the negative effects of our underweight to communication services. Inclusive of stock selection and interaction, strong performance from our financials and information technology names was not enough to overcome weakness from our health care and communication services names. Within financials, our favorable positioning and stock selection within the insurance and asset management industries were a key driver of absolute returns, with PGR, AJG, KKR and ARES all among the top performers during the period. The strategy’s sector exposures result from bottom-up stock-picking, not sector preferences or macro inputs.
POSITIONING
Consistent with the strategy’s long-standing portfolio construction philosophy, we continued to balance exposure between durable and rapid growth companies while ensuring diversification by business model, end market, and growth theme. Trading activity increased  slightly, with ten name swaps and a number of strategic position re-sizing trades to  optimize the ratio of upside potential to downside risk at the security and portfolio  levels. We believe these trades represent upgrades to the portfolio that will better position the strategy for future success.
Top Contributors
NVIDIA Corporation
ServiceNow, Inc.
Visa Inc. Class A
Microsoft Corporation
Progressive Corporation
Top Detractors
Edwards Lifesciences Corporation
West Pharmaceutical Services, Inc.
Trade Desk, Inc. Class A
Danaher Corporation
Thermo Fisher Scientific Inc.
PERFORMANCE
The Fund’s underperformance was largely driven by weakness in our health care, consumer discretionary, and communication services names.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
ANNUAL AVERAGE TOTAL RETURN (%)
 
1 Year
5 Year
10 Year
Investor Shares
10.84
14.05
15.89
Russell 1000® Index
15.66
16.30
13.35
Russell 1000® Growth Index
17.32
18.17
17.02
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/funds/sustainable-growth-fund for recent performance information.
Net Assets $ 9,027,770,024
Holdings Count | $ / shares 34
Advisory Fees Paid, Amount $ 47,705,230
Investment Company Portfolio Turnover 32.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$9,027,770,024
Number of Holdings
34
Net Advisory Fee
$47,705,230
Portfolio Turnover
32%
Holdings [Text Block]
Top Sectors*
(%)
Information Technology
45.4%
Financials
19.1%
Consumer Discretionary
11.7%
Industrials
10.9%
Health Care
6.3%
Communication Services
2.9%
Materials
1.7%
Cash & Other
2.0%
Top 10 Issuers
(%)
NVIDIA Corp.
8.8%
Microsoft Corp.
8.6%
Amazon.com, Inc.
7.4%
Intuit, Inc.
4.4%
Visa, Inc.
4.0%
KKR & Co., Inc.
3.9%
Marvell Technology, Inc.
3.5%
Progressive Corp.
3.4%
ServiceNow, Inc.
3.1%
Arthur J Gallagher & Co.
2.9%
[8]
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Advisor Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory Sustainable Growth Fund
Class Name Advisor Shares
Trading Symbol BAWAX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory Sustainable Growth Fund (the“Fund”) for the period of  July 1, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Advisor Shares
$105
1.00%
Expenses Paid, Amount $ 105
Expense Ratio, Percent 1.00%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 12-month period ended June 30, 2025, the Fund underperformed its benchmark, the Russell 1000® Index.
WHAT FACTORS INFLUENCED PERFORMANCE
During the period, sector positioning had a positive effect on relative returns against the Russell 1000® Index, while stock selection was detractive. From a sector allocation perspective, the strategy benefited from its overweight in financials and lack of exposure to energy, which outweighed the negative effects of our underweight to communication services. Inclusive of stock selection and interaction, strong performance from our financials and information technology names was not enough to overcome weakness from our health care and communication services names. Within financials, our favorable positioning and stock selection within the insurance and asset management industries were a key driver of absolute returns, with PGR, AJG, KKR and ARES all among the top performers during the period. The strategy’s sector exposures result from bottom-up stock-picking, not sector preferences or macro inputs.
POSITIONING
Consistent with the strategy’s long-standing portfolio construction philosophy, we continued to balance exposure between durable and rapid growth companies while ensuring diversification by business model, end market, and growth theme. Trading activity increased  slightly, with ten name swaps and a number of strategic position re-sizing trades to  optimize the ratio of upside potential to downside risk at the security and portfolio  levels. We believe these trades represent upgrades to the portfolio that will better position the strategy for future success.
Top Contributors
NVIDIA Corporation
ServiceNow, Inc.
Visa Inc. Class A
Microsoft Corporation
Progressive Corporation
Top Detractors
Edwards Lifesciences Corporation
West Pharmaceutical Services, Inc.
Trade Desk, Inc. Class A
Danaher Corporation
Thermo Fisher Scientific Inc.
PERFORMANCE
The Fund’s underperformance was largely driven by weakness in our health care, consumer discretionary, and communication services names.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
ANNUAL AVERAGE TOTAL RETURN (%)
 
1 Year
5 Year
10 Year
Advisor Shares
10.59
13.76
15.60
Russell 1000® Index
15.66
16.30
13.35
Russell 1000® Growth Index
17.32
18.17
17.02
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/funds/sustainable-growth-fund for recent performance information.
Net Assets $ 9,027,770,024
Holdings Count | $ / shares 34
Advisory Fees Paid, Amount $ 47,705,230
Investment Company Portfolio Turnover 32.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$9,027,770,024
Number of Holdings
34
Net Advisory Fee
$47,705,230
Portfolio Turnover
32%
Holdings [Text Block]
Top Sectors*
(%)
Information Technology
45.4%
Financials
19.1%
Consumer Discretionary
11.7%
Industrials
10.9%
Health Care
6.3%
Communication Services
2.9%
Materials
1.7%
Cash & Other
2.0%
Top 10 Issuers
(%)
NVIDIA Corp.
8.8%
Microsoft Corp.
8.6%
Amazon.com, Inc.
7.4%
Intuit, Inc.
4.4%
Visa, Inc.
4.0%
KKR & Co., Inc.
3.9%
Marvell Technology, Inc.
3.5%
Progressive Corp.
3.4%
ServiceNow, Inc.
3.1%
Arthur J Gallagher & Co.
2.9%
[9]
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Institutional Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory Mid-Cap Growth Fund
Class Name Institutional Shares
Trading Symbol BAFMX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory Mid-Cap Growth Fund (the“Fund”) for the period of  July 1, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Institutional Shares
$89
0.82%
Expenses Paid, Amount $ 89
Expense Ratio, Percent 0.82%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 12-month period ended June 30, 2025, the Fund outperformed its benchmark, the Russell 1000® Index.
WHAT FACTORS INFLUENCED PERFORMANCE
The main factor influencing performance was stock selection. Our strategy invests in mid- and small-capitalization equities that have an opportunity to grow at an above average rate over the long-term. Due to our focus on smaller companies, we do not purchase large- or mega-cap stocks. Thus, we never considered some of the most impactful Russell 1000® constituents during the last year such as Nvidia, Broadcom, Meta, Tesla, or Netflix. Despite that tilt, contributions from holdings such as Roblox, DoorDash, and Vistra helped the Fund outpace the benchmark over the period.
POSITIONING
Our philosophy harnesses the power of compounding, focusing on “3G” businesses (durable Growth, sound Governance, scalable Go-to-market strategies) that have a higher than average probability of making the journey from small- or mid-cap to large-cap than most companies. Since we are more closely aligned with the mid-cap universe, we are meaningfully underweight Information Technology and Financials and considerably overweight Industrials and Healthcare when compared to the Russell 1000® Index.
Top Contributors
Roblox Corp. Class A
DoorDash, Inc. Class A
Vistra Corp.
Cheniere Energy, Inc.
Insulet Corporation
Top Detractors
DexCom, Inc.
West Pharmaceutical Services, Inc.
Edwards Lifesciences Corporation
Bio-Techne Corporation
Entegris, Inc.
PERFORMANCE
The Fund’s relative outperformance during the 12-month period ending June 30, 2025 was commendable considering its structural focus on mid-caps kept it out of the top-10 Russell 1000® contributors. Returns were driven by positive stock selection, mostly in the Consumer, Energy, and Utilities sectors.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
ANNUAL AVERAGE TOTAL RETURN (%)
 
1 Year
5 Year
Since Inception
(07/02/2018)
Institutional Shares
16.77
8.97
9.52
Russell 1000® Index
15.66
16.30
14.05
Russell Midcap® Growth Index
26.49
12.65
12.67
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/funds/mid-cap-growth-fund for recent performance information.
Net Assets $ 72,530,892
Holdings Count | $ / shares 59
Advisory Fees Paid, Amount $ 511,191
Investment Company Portfolio Turnover 73.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$72,530,892
Number of Holdings
59
Net Advisory Fee
$511,191
Portfolio Turnover
73%
Holdings [Text Block]
Top Sectors*
(%)
Information Technology
25.0%
Industrials
21.1%
Health Care
15.3%
Consumer Discretionary
11.6%
Financials
5.4%
Energy
4.6%
Utilities
3.7%
Communication Services
3.5%
Real Estate
2.7%
Cash & Other
7.1%
Top 10 Issuers
(%)
First American Government Obligations Fund
4.8%
Vistra Corp.
3.7%
Marvell Technology, Inc.
3.7%
West Pharmaceutical Services, Inc.
3.2%
Cheniere Energy, Inc.
3.2%
Hilton Worldwide Holdings, Inc.
3.0%
CoStar Group, Inc.
2.7%
HEICO Corp.
2.6%
Datadog, Inc.
2.6%
CCC Intelligent Solutions Holdings, Inc.
2.3%
[10]
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Investor Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory Mid-Cap Growth Fund
Class Name Investor Shares
Trading Symbol BMIDX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory Mid-Cap Growth Fund (the“Fund”) for the period of  July 1, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Investor Shares
$105
0.97%
Expenses Paid, Amount $ 105
Expense Ratio, Percent 0.97%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 12-month period ended June 30, 2025, the Fund outperformed its benchmark, the Russell 1000® Index.
WHAT FACTORS INFLUENCED PERFORMANCE
The main factor influencing performance was stock selection. Our strategy invests in mid- and small-capitalization equities that have an opportunity to grow at an above average rate over the long-term. Due to our focus on smaller companies, we do not purchase large- or mega-cap stocks. Thus, we never considered some of the most impactful Russell 1000® constituents during the last year such as Nvidia, Broadcom, Meta, Tesla, or Netflix. Despite that tilt, contributions from holdings such as Roblox, DoorDash, and Vistra helped the Fund outpace the benchmark over the period.
POSITIONING
Our philosophy harnesses the power of compounding, focusing on “3G” businesses (durable Growth, sound Governance, scalable Go-to-market strategies) that have a higher than average probability of making the journey from small- or mid-cap to large-cap than most companies. Since we are more closely aligned with the mid-cap universe, we are meaningfully underweight Information Technology and Financials and considerably overweight Industrials and Healthcare when compared to the Russell 1000® Index.
Top Contributors
Roblox Corp. Class A
DoorDash, Inc. Class A
Vistra Corp.
Cheniere Energy, Inc.
Insulet Corporation
Top Detractors
DexCom, Inc.
West Pharmaceutical Services, Inc.
Edwards Lifesciences Corporation
Bio-Techne Corporation
Entegris, Inc.
PERFORMANCE
The Fund’s relative outperformance during the 12-month period ending June 30, 2025 was commendable considering its structural focus on mid-caps kept it out of the top-10 Russell 1000® contributors. Returns were driven by positive stock selection, mostly in the Consumer, Energy, and Utilities sectors.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
ANNUAL AVERAGE TOTAL RETURN (%)
 
1 Year
5 Year
Since Inception
(10/02/2017)
Investor Shares
16.70
8.82
10.29
Russell 1000® Index
15.66
16.30
13.94
Russell Midcap® Growth Index
26.49
12.65
13.09
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/funds/mid-cap-growth-fund for recent performance information.
Net Assets $ 72,530,892
Holdings Count | $ / shares 59
Advisory Fees Paid, Amount $ 511,191
Investment Company Portfolio Turnover 73.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$72,530,892
Number of Holdings
59
Net Advisory Fee
$511,191
Portfolio Turnover
73%
Holdings [Text Block]
Top Sectors*
(%)
Information Technology
25.0%
Industrials
21.1%
Health Care
15.3%
Consumer Discretionary
11.6%
Financials
5.4%
Energy
4.6%
Utilities
3.7%
Communication Services
3.5%
Real Estate
2.7%
Cash & Other
7.1%
Top 10 Issuers
(%)
First American Government Obligations Fund
4.8%
Vistra Corp.
3.7%
Marvell Technology, Inc.
3.7%
West Pharmaceutical Services, Inc.
3.2%
Cheniere Energy, Inc.
3.2%
Hilton Worldwide Holdings, Inc.
3.0%
CoStar Group, Inc.
2.7%
HEICO Corp.
2.6%
Datadog, Inc.
2.6%
CCC Intelligent Solutions Holdings, Inc.
2.3%
[11]
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Institutional Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory Small-Cap Growth Fund
Class Name Institutional Shares
Trading Symbol BAFSX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory Small-Cap Growth Fund (the“Fund”) for the period of  July 1, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Institutional Shares
$97
0.95%
Expenses Paid, Amount $ 97
Expense Ratio, Percent 0.95%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 12-month period ended June 30, 2025, the Fund underperformed its regulatory benchmark, the Russell 1000® Index.
WHAT FACTORS INFLUENCED PERFORMANCE
We are in a multi-year cycle where the largest companies have provided the strongest returns, and the main factor influencing performance remains our style and area of focus. Our strategy tends to look for small-capitalization equities that have an opportunity to grow at an above average rate over the long-term. Due to our focus on smaller companies, we do not purchase mid-cap or large-cap stocks. Thus, we never considered some of the most prolific contributors in the large-cap space such as Nvidia, Broadcom and other mega-cap technology names, along with a number of the best performers within the communication services and consumer discretionary sectors.
POSITIONING
Our philosophy harnesses the power of compounding, focusing on “3G” businesses (durable Growth, sound Governance, scalable Go-to-market strategies) that have a higher than average probability of making the journey from small-cap to mid-cap (and perhaps large-cap) than most companies. Since we are more closely aligned with the smaller capitalization universe, we are underweight financials and information technology and overweight industrials and health care.
Top Contributors
Curtiss-Wright Corporation
SiTime Corporation
Inari Medical, Inc.
Mirion Technologies, Inc. Class A
Encompass Health Corporation
Top Detractors
KinderCare Learning Companies Inc
Entegris, Inc.
Bruker Corporation
Bio-Techne Corporation
ChampionX Corporation
PERFORMANCE
The 12-month period ending June 30, 2025 was challenging due to our lack of ownership of any of the large-cap stocks that drove the Russell 1000® Index over this period.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
ANNUAL AVERAGE TOTAL RETURN (%)
 
1 Year
5 Year
10 Year
Institutional Shares
4.37
5.83
8.03
Russell 1000® Index
15.66
16.30
13.35
Russell 2000® Growth Index
9.73
7.42
7.14
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/funds/small-cap-growth-fund for recent performance information.
Net Assets $ 932,266,930
Holdings Count | $ / shares 75
Advisory Fees Paid, Amount $ 11,838,825
Investment Company Portfolio Turnover 28.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$932,266,930
Number of Holdings
75
Net Advisory Fee
$11,838,825
Portfolio Turnover
28%
Holdings [Text Block]
Top Sectors*
(%)
Industrials
30.1%
Information Technology
24.6%
Health Care
20.6%
Consumer Discretionary
6.4%
Energy
4.7%
Financials
4.4%
Communication Services
2.4%
Consumer Staples
2.1%
Real Estate
1.9%
Cash & Other
2.8%
Top 10 Issuers
(%)
CCC Intelligent Solutions Holdings, Inc.
4.0%
HealthEquity, Inc.
3.2%
Dynatrace, Inc.
3.2%
Bright Horizons Family Solutions, Inc.
3.2%
Waste Connections, Inc.
3.0%
Prosperity Bancshares, Inc.
2.9%
Curtiss-Wright Corp.
2.5%
StandardAero, Inc.
2.5%
Mirion Technologies, Inc.
2.5%
Encompass Health Corp.
2.5%
[12]
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Investor Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory Small-Cap Growth Fund
Class Name Investor Shares
Trading Symbol BIASX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory Small-Cap Growth Fund (the“Fund”) for the period of  July 1, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Investor Shares
$112
1.10%
Expenses Paid, Amount $ 112
Expense Ratio, Percent 1.10%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 12-month period ended June 30, 2025, the Fund underperformed its regulatory benchmark, the Russell 1000® Index.
WHAT FACTORS INFLUENCED PERFORMANCE
We are in a multi-year cycle where the largest companies have provided the strongest returns, and the main factor influencing performance remains our style and area of focus. Our strategy tends to look for small-capitalization equities that have an opportunity to grow at an above average rate over the long-term. Due to our focus on smaller companies, we do not purchase mid-cap or large-cap stocks. Thus, we never considered some of the most prolific contributors in the large-cap space such as Nvidia, Broadcom and other mega-cap technology names, along with a number of the best performers within the communication services and consumer discretionary sectors.
POSITIONING
Our philosophy harnesses the power of compounding, focusing on “3G” businesses (durable Growth, sound Governance, scalable Go-to-market strategies) that have a higher than average probability of making the journey from small-cap to mid-cap (and perhaps large-cap) than most companies. Since we are more closely aligned with the smaller capitalization universe, we are underweight financials and information technology and overweight industrials and health care.
Top Contributors
Curtiss-Wright Corporation
SiTime Corporation
Inari Medical, Inc.
Mirion Technologies, Inc. Class A
Encompass Health Corporation
Top Detractors
KinderCare Learning Companies Inc
Entegris, Inc.
Bruker Corporation
Bio-Techne Corporation
ChampionX Corporation
PERFORMANCE
The 12-month period ending June 30, 2025 was challenging due to our lack of ownership of any of the large-cap stocks that drove the Russell 1000® Index over this period.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
ANNUAL AVERAGE TOTAL RETURN (%)
 
1 Year
5 Year
10 Year
Investor Shares
4.24
5.68
7.87
Russell 1000® Index
15.66
16.30
13.35
Russell 2000® Growth Index
9.73
7.42
7.14
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/funds/small-cap-growth-fund for recent performance information.
Net Assets $ 932,266,930
Holdings Count | $ / shares 75
Advisory Fees Paid, Amount $ 11,838,825
Investment Company Portfolio Turnover 28.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$932,266,930
Number of Holdings
75
Net Advisory Fee
$11,838,825
Portfolio Turnover
28%
Holdings [Text Block]
Top Sectors*
(%)
Industrials
30.1%
Information Technology
24.6%
Health Care
20.6%
Consumer Discretionary
6.4%
Energy
4.7%
Financials
4.4%
Communication Services
2.4%
Consumer Staples
2.1%
Real Estate
1.9%
Cash & Other
2.8%
Top 10 Issuers
(%)
CCC Intelligent Solutions Holdings, Inc.
4.0%
HealthEquity, Inc.
3.2%
Dynatrace, Inc.
3.2%
Bright Horizons Family Solutions, Inc.
3.2%
Waste Connections, Inc.
3.0%
Prosperity Bancshares, Inc.
2.9%
Curtiss-Wright Corp.
2.5%
StandardAero, Inc.
2.5%
Mirion Technologies, Inc.
2.5%
Encompass Health Corp.
2.5%
[13]
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Advisor Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory Small-Cap Growth Fund
Class Name Advisor Shares
Trading Symbol BASAX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory Small-Cap Growth Fund (the“Fund”) for the period of  July 1, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Advisor Shares
$138
1.35%
Expenses Paid, Amount $ 138
Expense Ratio, Percent 1.35%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 12-month period ended June 30, 2025, the Fund underperformed its regulatory benchmark, the Russell 1000® Index.
WHAT FACTORS INFLUENCED PERFORMANCE
We are in a multi-year cycle where the largest companies have provided the strongest returns, and the main factor influencing performance remains our style and area of focus. Our strategy tends to look for small-capitalization equities that have an opportunity to grow at an above average rate over the long-term. Due to our focus on smaller companies, we do not purchase mid-cap or large-cap stocks. Thus, we never considered some of the most prolific contributors in the large-cap space such as Nvidia, Broadcom and other mega-cap technology names, along with a number of the best performers within the communication services and consumer discretionary sectors.
POSITIONING
Our philosophy harnesses the power of compounding, focusing on “3G” businesses (durable Growth, sound Governance, scalable Go-to-market strategies) that have a higher than average probability of making the journey from small-cap to mid-cap (and perhaps large-cap) than most companies. Since we are more closely aligned with the smaller capitalization universe, we are underweight financials and information technology and overweight industrials and health care.
Top Contributors
Curtiss-Wright Corporation
SiTime Corporation
Inari Medical, Inc.
Mirion Technologies, Inc. Class A
Encompass Health Corporation
Top Detractors
KinderCare Learning Companies Inc
Entegris, Inc.
Bruker Corporation
Bio-Techne Corporation
ChampionX Corporation
PERFORMANCE
The 12-month period ending June 30, 2025 was challenging due to our lack of ownership of any of the large-cap stocks that drove the Russell 1000® Index over this period.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
ANNUAL AVERAGE TOTAL RETURN (%)
 
1 Year
5 Year
10 Year
Advisor Shares
3.97
5.41
7.60
Russell 1000® Index
15.66
16.30
13.35
Russell 2000® Growth Index
9.73
7.42
7.14
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/funds/small-cap-growth-fund for recent performance information.
Net Assets $ 932,266,930
Holdings Count | $ / shares 75
Advisory Fees Paid, Amount $ 11,838,825
Investment Company Portfolio Turnover 28.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$932,266,930
Number of Holdings
75
Net Advisory Fee
$11,838,825
Portfolio Turnover
28%
Holdings [Text Block]
Top Sectors*
(%)
Industrials
30.1%
Information Technology
24.6%
Health Care
20.6%
Consumer Discretionary
6.4%
Energy
4.7%
Financials
4.4%
Communication Services
2.4%
Consumer Staples
2.1%
Real Estate
1.9%
Cash & Other
2.8%
Top 10 Issuers
(%)
CCC Intelligent Solutions Holdings, Inc.
4.0%
HealthEquity, Inc.
3.2%
Dynatrace, Inc.
3.2%
Bright Horizons Family Solutions, Inc.
3.2%
Waste Connections, Inc.
3.0%
Prosperity Bancshares, Inc.
2.9%
Curtiss-Wright Corp.
2.5%
StandardAero, Inc.
2.5%
Mirion Technologies, Inc.
2.5%
Encompass Health Corp.
2.5%
[14]
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Institutional Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory Small-Cap Fundamental Value Fund
Class Name Institutional Shares
Trading Symbol BAUUX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory Small-Cap Fundamental Value Fund (the“Fund”) for the period of  July 1, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Institutional Shares
$97
0.95%
Expenses Paid, Amount $ 97
Expense Ratio, Percent 0.95%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 12-month period ended June 30, 2025, the Fund underperformed its regulatory benchmark, the Russell 1000® Index.
WHAT FACTORS INFLUENCED PERFORMANCE
Positive contribution to Fund performance was mainly driven by the financials and utilities sectors while the communication services and health care sectors were the biggest detractors. The largest individual contributor to performance was Talen Energy Corp (TLN) and the largest individual detractor to performance was Cable One, Inc. (CABO).
POSITIONING
We were active during the period and invested in fifteen new companies and exited from sixteen companies. We also had two additions and deletions during the period. The additions during the period were diversified across most economic sectors. A notable addition to the communication services sector in the second quarter of 2025 was Cars.com (CARS). CARS assists consumers navigating the new and used car market. The company’s business revenue model is based on monthly subscriptions from over 19,000 dealers along with advertising revenues from original equipment manufacturers “OEMS” and dealers. The company’s valuation is down recently due to negative sentiment in the auto sector. CARS trades at approximately 6x EBITDA and has begun to use its significant cash flow to repurchase its shares.
Top Contributors
Talen Energy Corp
Bancorp Inc
OSI Systems, Inc.
Hanover Insurance Group, Inc.
Curtiss-Wright Corporation
Top Detractors
Cable One, Inc.
Orion S.A.
Acadia Healthcare Company, Inc.
Avanos Medical, Inc.
Expro Group Holdings N.V.
PERFORMANCE
The Fund posted positive returns and underperformed its regulatory benchmark, Russell 1000® Index, during the period.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
ANNUAL AVERAGE TOTAL RETURN (%)
 
1 Year
5 Year
10 Year
Institutional Shares
3.93
13.33
6.99
Russell 1000® Index
15.66
16.30
13.35
Russell 2000® Value Index
5.54
12.47
6.72
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/funds/small-cap-fundamental-value-fund for recent performance information.
Net Assets $ 1,177,998,140
Holdings Count | $ / shares 65
Advisory Fees Paid, Amount $ 11,566,211
Investment Company Portfolio Turnover 39.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$1,177,998,140
Number of Holdings
65
Net Advisory Fee
$11,566,211
Portfolio Turnover
39%
Holdings [Text Block]
Top Sectors*
(%)
Financials
30.6%
Consumer Discretionary
11.8%
Industrials
9.5%
Information Technology
8.3%
Communication Services
7.2%
Materials
7.0%
Utilities
6.2%
Energy
5.6%
Real Estate
4.7%
Cash & Other
9.1%
Top 10 Issuers
(%)
Talen Energy Corp.
4.1%
First American Government Obligations Fund
3.8%
Signet Jewelers Ltd.
3.0%
Bancorp, Inc.
2.9%
NCR Atleos Corp.
2.9%
Eastern Bankshares, Inc.
2.4%
Eagle Materials, Inc.
2.4%
John Wiley & Sons, Inc.
2.3%
Old National Bancorp
2.3%
Nomad Foods Ltd.
2.2%
[15]
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Investor Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory Small-Cap Fundamental Value Fund
Class Name Investor Shares
Trading Symbol BIAUX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory Small-Cap Fundamental Value Fund (the“Fund”) for the period of  July 1, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Investor Shares
$112
1.10%
Expenses Paid, Amount $ 112
Expense Ratio, Percent 1.10%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 12-month period ended June 30, 2025, the Fund underperformed its regulatory benchmark, the Russell 1000® Index.
WHAT FACTORS INFLUENCED PERFORMANCE
Positive contribution to Fund performance was mainly driven by the financials and utilities sectors while the communication services and health care sectors were the biggest detractors. The largest individual contributor to performance was Talen Energy Corp (TLN) and the largest individual detractor to performance was Cable One, Inc. (CABO).
POSITIONING
We were active during the period and invested in fifteen new companies and exited from sixteen companies. We also had two additions and deletions during the period. The additions during the period were diversified across most economic sectors. A notable addition to the communication services sector in the second quarter of 2025 was Cars.com (CARS). CARS assists consumers navigating the new and used car market. The company’s business revenue model is based on monthly subscriptions from over 19,000 dealers along with advertising revenues from original equipment manufacturers “OEMS” and dealers. The company’s valuation is down recently due to negative sentiment in the auto sector. CARS trades at approximately 6x EBITDA and has begun to use its significant cash flow to repurchase its shares.
Top Contributors
Talen Energy Corp
Bancorp Inc
OSI Systems, Inc.
Hanover Insurance Group, Inc.
Curtiss-Wright Corporation
Top Detractors
Cable One, Inc.
Orion S.A.
Acadia Healthcare Company, Inc.
Avanos Medical, Inc.
Expro Group Holdings N.V.
PERFORMANCE
The Fund posted positive returns and underperformed its regulatory benchmark, Russell 1000® Index, during the period.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
ANNUAL AVERAGE TOTAL RETURN (%)
 
1 Year
5 Year
10 Year
Investor Shares
3.78
13.16
6.83
Russell 1000® Index
15.66
16.30
13.35
Russell 2000® Value Index
5.54
12.47
6.72
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/funds/small-cap-fundamental-value-fund for recent performance information.
Net Assets $ 1,177,998,140
Holdings Count | $ / shares 65
Advisory Fees Paid, Amount $ 11,566,211
Investment Company Portfolio Turnover 39.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$1,177,998,140
Number of Holdings
65
Net Advisory Fee
$11,566,211
Portfolio Turnover
39%
Holdings [Text Block]
Top Sectors*
(%)
Financials
30.6%
Consumer Discretionary
11.8%
Industrials
9.5%
Information Technology
8.3%
Communication Services
7.2%
Materials
7.0%
Utilities
6.2%
Energy
5.6%
Real Estate
4.7%
Cash & Other
9.1%
Top 10 Issuers
(%)
Talen Energy Corp.
4.1%
First American Government Obligations Fund
3.8%
Signet Jewelers Ltd.
3.0%
Bancorp, Inc.
2.9%
NCR Atleos Corp.
2.9%
Eastern Bankshares, Inc.
2.4%
Eagle Materials, Inc.
2.4%
John Wiley & Sons, Inc.
2.3%
Old National Bancorp
2.3%
Nomad Foods Ltd.
2.2%
[16]
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Advisor Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory Small-Cap Fundamental Value Fund
Class Name Advisor Shares
Trading Symbol BAUAX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory Small-Cap Fundamental Value Fund (the“Fund”) for the period of  July 1, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Advisor Shares
$137
1.35%
Expenses Paid, Amount $ 137
Expense Ratio, Percent 1.35%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 12-month period ended June 30, 2025, the Fund underperformed its regulatory benchmark, the Russell 1000® Index.
WHAT FACTORS INFLUENCED PERFORMANCE
Positive contribution to Fund performance was mainly driven by the financials and utilities sectors while the communication services and health care sectors were the biggest detractors. The largest individual contributor to performance was Talen Energy Corp (TLN) and the largest individual detractor to performance was Cable One, Inc. (CABO).
POSITIONING
We were active during the period and invested in fifteen new companies and exited from sixteen companies. We also had two additions and deletions during the period. The additions during the period were diversified across most economic sectors. A notable addition to the communication services sector in the second quarter of 2025 was Cars.com (CARS). CARS assists consumers navigating the new and used car market. The company’s business revenue model is based on monthly subscriptions from over 19,000 dealers along with advertising revenues from original equipment manufacturers “OEMS” and dealers. The company’s valuation is down recently due to negative sentiment in the auto sector. CARS trades at approximately 6x EBITDA and has begun to use its significant cash flow to repurchase its shares.
Top Contributors
Talen Energy Corp
Bancorp Inc
OSI Systems, Inc.
Hanover Insurance Group, Inc.
Curtiss-Wright Corporation
Top Detractors
Cable One, Inc.
Orion S.A.
Acadia Healthcare Company, Inc.
Avanos Medical, Inc.
Expro Group Holdings N.V.
PERFORMANCE
The Fund posted positive returns and underperformed its regulatory benchmark, Russell 1000® Index, during the period.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
ANNUAL AVERAGE TOTAL RETURN (%)
 
1 Year
5 Year
10 Year
Advisor Shares
3.50
12.87
6.56
Russell 1000® Index
15.66
16.30
13.35
Russell 2000® Value Index
5.54
12.47
6.72
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/funds/small-cap-fundamental-value-fund for recent performance information.
Net Assets $ 1,177,998,140
Holdings Count | $ / shares 65
Advisory Fees Paid, Amount $ 11,566,211
Investment Company Portfolio Turnover 39.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$1,177,998,140
Number of Holdings
65
Net Advisory Fee
$11,566,211
Portfolio Turnover
39%
Holdings [Text Block]
Top Sectors*
(%)
Financials
30.6%
Consumer Discretionary
11.8%
Industrials
9.5%
Information Technology
8.3%
Communication Services
7.2%
Materials
7.0%
Utilities
6.2%
Energy
5.6%
Real Estate
4.7%
Cash & Other
9.1%
Top 10 Issuers
(%)
Talen Energy Corp.
4.1%
First American Government Obligations Fund
3.8%
Signet Jewelers Ltd.
3.0%
Bancorp, Inc.
2.9%
NCR Atleos Corp.
2.9%
Eastern Bankshares, Inc.
2.4%
Eagle Materials, Inc.
2.4%
John Wiley & Sons, Inc.
2.3%
Old National Bancorp
2.3%
Nomad Foods Ltd.
2.2%
[17]
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Institutional Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory Sustainable Small-Cap Core Fund
Class Name Institutional Shares
Trading Symbol BAFYX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory Sustainable Small-Cap Core Fund (the“Fund”) for the period of  July 1, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Institutional Shares
$96
0.93%
Expenses Paid, Amount $ 96
Expense Ratio, Percent 0.93%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 12-month period ended June 30, 2025, the Fund underperformed its regulatory benchmark, the Russell 1000® Index.
WHAT FACTORS INFLUENCED PERFORMANCE
Positive contribution to Fund performance was primarily driven by stock selection in the financials and industrials sector, while the consumer discretionary sector was the biggest detractor. The largest individual contributor to performance was Talen Energy Corp (TLN) and the largest individual detractor to performance was KinderCare Learning Companies Inc (KLC).
POSITIONING
We were active during the 12-month period and invested in 24 new companies and exited from 20 companies.  Two companies were bought and sold in the quarter. Activity was broad based across sectors, but most heavily focused within the health care, industrials, and information technology sectors. A notable addition to the information technology sector during the period was Mirion Technologies. Mirion Technologies leverages their expertise in ionizing radiation technology to measure the presence of radioactive material in medical diagnostics, nuclear energy, military nuclear threat prevention settings, and deliver radiation therapies to treat cancer. Mirion has high levels of recurring revenue for their nuclear radiation detection, test, and measurement products which are required in any setting where radiation is present. They are benefitting from the growth of nuclear power globally and the increasing use of radiation therapies to treat cancer and other diseases.
Top Contributors
Talen Energy Corp
Bancorp Inc
Encompass Health Corporation
Inari Medical, Inc.
Mirion Technologies, Inc. Class A
Top Detractors
KinderCare Learning Companies Inc
Onto Innovation, Inc.
Vaxcyte, Inc.
Biohaven Ltd.
Cable One, Inc.
PERFORMANCE
Small cap indices continued to face unprecedented underperformance relative to large cap indices during the 12-month period, resulting in the fund underperforming compared to its regulatory benchmark.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
ANNUAL AVERAGE TOTAL RETURN (%)
 
1 Year
Since Inception
(09/30/2021)
Institutional Shares
6.96
1.09
Russell 1000® Index
15.66
11.11
Russell 2000® Index
7.68
1.08
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/funds/sustainable-small-cap-core-fund for recent performance information.
Net Assets $ 99,422,927
Holdings Count | $ / shares 74
Advisory Fees Paid, Amount $ 664,803
Investment Company Portfolio Turnover 43.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$99,422,927
Number of Holdings
74
Net Advisory Fee
$664,803
Portfolio Turnover
43%
Holdings [Text Block]
Top Sectors*
(%)
Industrials
19.8%
Financials
19.0%
Health Care
15.8%
Information Technology
14.5%
Consumer Discretionary
9.3%
Real Estate
5.0%
Consumer Staples
3.2%
Utilities
3.2%
Communication Services
3.0%
Cash & Other
7.2%
Top 10 Issuers
(%)
First American Government Obligations Fund
4.5%
Talen Energy Corp.
3.2%
Bancorp, Inc.
2.9%
Encompass Health Corp.
2.4%
SPX Technologies, Inc.
2.3%
Eastern Bankshares, Inc.
2.2%
Old National Bancorp
2.0%
Valmont Industries, Inc.
2.0%
EnPro, Inc.
1.9%
Bright Horizons Family Solutions, Inc.
1.9%
[18]
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Investor Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory Sustainable Small-Cap Core Fund
Class Name Investor Shares
Trading Symbol BIAYX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory Sustainable Small-Cap Core Fund (the“Fund”) for the period of  July 1, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Investor Shares
$112
1.08%
Expenses Paid, Amount $ 112
Expense Ratio, Percent 1.08%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 12-month period ended June 30, 2025, the Fund underperformed its regulatory benchmark, the Russell 1000® Index.
WHAT FACTORS INFLUENCED PERFORMANCE
Positive contribution to Fund performance was primarily driven by stock selection in the financials and industrials sector, while the consumer discretionary sector was the biggest detractor. The largest individual contributor to performance was Talen Energy Corp (TLN) and the largest individual detractor to performance was KinderCare Learning Companies Inc (KLC).
POSITIONING
We were active during the 12-month period and invested in 24 new companies and exited from 20 companies.  Two companies were bought and sold in the quarter. Activity was broad based across sectors, but most heavily focused within the health care, industrials, and information technology sectors. A notable addition to the information technology sector during the period was Mirion Technologies. Mirion Technologies leverages their expertise in ionizing radiation technology to measure the presence of radioactive material in medical diagnostics, nuclear energy, military nuclear threat prevention settings, and deliver radiation therapies to treat cancer. Mirion has high levels of recurring revenue for their nuclear radiation detection, test, and measurement products which are required in any setting where radiation is present. They are benefitting from the growth of nuclear power globally and the increasing use of radiation therapies to treat cancer and other diseases.
Top Contributors
Talen Energy Corp
Bancorp Inc
Encompass Health Corporation
Inari Medical, Inc.
Mirion Technologies, Inc. Class A
Top Detractors
KinderCare Learning Companies Inc
Onto Innovation, Inc.
Vaxcyte, Inc.
Biohaven Ltd.
Cable One, Inc.
PERFORMANCE
Small cap indices continued to face unprecedented underperformance relative to large cap indices during the 12-month period, resulting in the fund underperforming compared to its regulatory benchmark.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
ANNUAL AVERAGE TOTAL RETURN (%)
 
1 Year
Since Inception
(09/30/2021)
Investor Shares
6.74
0.91
Russell 1000® Index
15.66
11.11
Russell 2000® Index
7.68
1.08
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/funds/sustainable-small-cap-core-fund for recent performance information.
Net Assets $ 99,422,927
Holdings Count | $ / shares 74
Advisory Fees Paid, Amount $ 664,803
Investment Company Portfolio Turnover 43.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$99,422,927
Number of Holdings
74
Net Advisory Fee
$664,803
Portfolio Turnover
43%
Holdings [Text Block]
Top Sectors*
(%)
Industrials
19.8%
Financials
19.0%
Health Care
15.8%
Information Technology
14.5%
Consumer Discretionary
9.3%
Real Estate
5.0%
Consumer Staples
3.2%
Utilities
3.2%
Communication Services
3.0%
Cash & Other
7.2%
Top 10 Issuers
(%)
First American Government Obligations Fund
4.5%
Talen Energy Corp.
3.2%
Bancorp, Inc.
2.9%
Encompass Health Corp.
2.4%
SPX Technologies, Inc.
2.3%
Eastern Bankshares, Inc.
2.2%
Old National Bancorp
2.0%
Valmont Industries, Inc.
2.0%
EnPro, Inc.
1.9%
Bright Horizons Family Solutions, Inc.
1.9%
[19]
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Institutional Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory Sustainable Value Fund
Class Name Institutional Shares
Trading Symbol BASVX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory Sustainable Value Fund (the“Fund”) for the period of  July 1, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Institutional Shares
$75
0.70%
Expenses Paid, Amount $ 75
Expense Ratio, Percent 0.70%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 12-month period ended June 30, 2025, the Fund underperformed its benchmark, the Russell 1000® Index.
WHAT FACTORS INFLUENCED PERFORMANCE
Health Care, Utilities, and Real Estate were the leading contributors to performance during the period. Energy, Information Technology, and Communication Services were the leading sources of underperformance. Our overweight to health care hurt as the sector lagged the benchmark returns, but this was offset by our strong stock selection. Energy was a detractor to performance during the period as our exposure to oilfield services underperformed other areas of energy such as exploration & production. We were pleased that our performance over the last year was driven by stock selection across the portfolio as opposed to sector allocation.
POSITIONING
During the period, we added five new companies and eliminated six companies. The new additions included two in Health Care, one in Financials, one in Information Technology, and one in Consumer Discretionary. The eliminations included three in Health Care, one in Financials, one in Consumer Discretionary, and one in Information Technology. We remain overweight in Health Care, Financials and Materials and are underweight Information Technology and Consumer Discretionary. We continue to look for high quality businesses that generate consistent high levels of free cash flow, possess a Sustainable Free Cash Flow Advantage, exhibit capital discipline and trade at attractive valuations.
Top Contributors
Constellation Energy Corporation
Cardinal Health, Inc.
T-Mobile US, Inc.
CRH public limited company
Trane Technologies plc
Top Detractors
Weatherford International plc
Schlumberger Limited
Elevance Health, Inc.
ChampionX Corporation
Merck & Co., Inc.
PERFORMANCE
The Fund posted positive returns and underperformed its regulatory benchmark during the period.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
ANNUAL AVERAGE TOTAL RETURN (%)
 
1 Year
Since Inception
(02/28/2023)
Institutional Shares
13.76
15.85
Russell 1000® Index
15.66
22.47
Russell 1000® Value Index
13.70
13.06
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/funds/sustainable-value-fund for recent performance information.
Net Assets $ 158,641,914
Holdings Count | $ / shares 42
Advisory Fees Paid, Amount $ 717,079
Investment Company Portfolio Turnover 29.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$158,641,914
Number of Holdings
42
Net Advisory Fee
$717,079
Portfolio Turnover
29%
Holdings [Text Block]
Top Sectors*
(%)
Financials
22.1%
Health Care
17.5%
Information Technology
12.3%
Industrials
11.5%
Communication Services
7.9%
Energy
4.9%
Consumer Staples
4.7%
Materials
4.5%
Consumer Discretionary
4.3%
Cash & Other
10.3%
Top 10 Issuers
(%)
First American Government Obligations Fund
5.3%
CRH PLC
4.5%
Ferguson Enterprises, Inc.
4.2%
Sanofi SA
4.1%
Cardinal Health, Inc.
4.1%
American International Group, Inc.
3.8%
Unilever PLC
3.8%
Bank of America Corp.
3.7%
Constellation Energy Corp.
3.5%
Willis Towers Watson PLC
3.5%
[20]
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Investor Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory Sustainable Value Fund
Class Name Investor Shares
Trading Symbol BISVX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory Sustainable Value Fund (the“Fund”) for the period of  July 1, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Investor Shares
$91
0.85%
Expenses Paid, Amount $ 91
Expense Ratio, Percent 0.85%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 12-month period ended June 30, 2025, the Fund underperformed its benchmark, the Russell 1000® Index.
WHAT FACTORS INFLUENCED PERFORMANCE
Health Care, Utilities, and Real Estate were the leading contributors to performance during the period. Energy, Information Technology, and Communication Services were the leading sources of underperformance. Our overweight to health care hurt as the sector lagged the benchmark returns, but this was offset by our strong stock selection. Energy was a detractor to performance during the period as our exposure to oilfield services underperformed other areas of energy such as exploration & production. We were pleased that our performance over the last year was driven by stock selection across the portfolio as opposed to sector allocation.
POSITIONING
During the period, we added five new companies and eliminated six companies. The new additions included two in Health Care, one in Financials, one in Information Technology, and one in Consumer Discretionary. The eliminations included three in Health Care, one in Financials, one in Consumer Discretionary, and one in Information Technology. We remain overweight in Health Care, Financials and Materials and are underweight Information Technology and Consumer Discretionary. We continue to look for high quality businesses that generate consistent high levels of free cash flow, possess a Sustainable Free Cash Flow Advantage, exhibit capital discipline and trade at attractive valuations.
Top Contributors
Constellation Energy Corporation
Cardinal Health, Inc.
T-Mobile US, Inc.
CRH public limited company
Trane Technologies plc
Top Detractors
Weatherford International plc
Schlumberger Limited
Elevance Health, Inc.
ChampionX Corporation
Merck & Co., Inc.
PERFORMANCE
The Fund posted positive returns and underperformed its regulatory benchmark during the period.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
ANNUAL AVERAGE TOTAL RETURN (%)
 
1 Year
Since Inception
(02/28/2023)
Investor Shares
13.60
15.61
Russell 1000® Index
15.66
22.47
Russell 1000® Value Index
13.70
13.06
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/funds/sustainable-value-fund for recent performance information.
Net Assets $ 158,641,914
Holdings Count | $ / shares 42
Advisory Fees Paid, Amount $ 717,079
Investment Company Portfolio Turnover 29.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$158,641,914
Number of Holdings
42
Net Advisory Fee
$717,079
Portfolio Turnover
29%
Holdings [Text Block]
Top Sectors*
(%)
Financials
22.1%
Health Care
17.5%
Information Technology
12.3%
Industrials
11.5%
Communication Services
7.9%
Energy
4.9%
Consumer Staples
4.7%
Materials
4.5%
Consumer Discretionary
4.3%
Cash & Other
10.3%
Top 10 Issuers
(%)
First American Government Obligations Fund
5.3%
CRH PLC
4.5%
Ferguson Enterprises, Inc.
4.2%
Sanofi SA
4.1%
Cardinal Health, Inc.
4.1%
American International Group, Inc.
3.8%
Unilever PLC
3.8%
Bank of America Corp.
3.7%
Constellation Energy Corp.
3.5%
Willis Towers Watson PLC
3.5%
[21]
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Institutional Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory Global Leaders Fund
Class Name Institutional Shares
Trading Symbol BAFLX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory Global Leaders Fund (the“Fund”) for the period of  July 1, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Institutional Shares
$81
0.75%
Expenses Paid, Amount $ 81
Expense Ratio, Percent 0.75%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 12-month period ended June 30, 2025, the Fund outperformed its benchmark, the MSCI All Country World Index (ACWI).
WHAT FACTORS INFLUENCED PERFORMANCE
Outperformance was driven primarily by financials, consumer discretionary and industrials. Financials performed strongly in the face of volatility (e.g. Deutsche Boerse, B3), delivering counter-cyclical ballast to the portfolio. Industrials contributed to relative performance, particularly through the ongoing contribution of aerospace. Health Care contributed negatively, and we have exited two health care companies during the reporting period. Technology performed strongly in absolute terms. The Fund delivered downside capture during the market weakness in early 2025. While not an explicit target, we aim to identify companies that can help insulate our investors in bad times so we can compound a smaller loss thereafter.
POSITIONING
We are looking for high-quality companies with superior customer outcomes that we believe are able to pass on prices and generate high levels of recurring revenue while requiring low leverage. Sector and country diversification is an output of investment selection and capital allocation. During the year we added Rentokil and Experian. We exited TJX Companies, Adobe and Coloplast. We initiated and exited Illumina following an unusually short holding period due to a combination of supply-side and demand-side risks impacting our thesis.
Top Contributors
Deutsche Boerse AG
GE Aerospace
Safran SA
Mastercard Incorporated Class A
London Stock Exchange Group plc
Top Detractors
Illumina, Inc.
Adobe Inc.
Alphabet Inc. Class C
Edwards Lifesciences Corporation
Zoetis, Inc. Class A
PERFORMANCE
The Fund delivered absolute positive performance during the reporting period, outperforming the benchmark.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
ANNUAL AVERAGE TOTAL RETURN (%)
 
1 Year
5 Year
Since Inception
(10/31/2018)
Institutional Shares
16.95
13.64
13.88
MSCI All Country World Index (ACWI)
16.17
13.65
11.96
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/funds/global-leaders-fund for recent performance information.
Net Assets $ 2,417,663,440
Holdings Count | $ / shares 34
Advisory Fees Paid, Amount $ 13,850,998
Investment Company Portfolio Turnover 22.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$2,417,663,440
Number of Holdings
34
Net Advisory Fee
$13,850,998
Portfolio Turnover
22%
Holdings [Text Block]
Top Sectors*
(%)
Financials
32.8%
Information Technology
22.7%
Industrials
18.9%
Health Care
8.1%
Communication Services
5.4%
Consumer Discretionary
4.5%
Consumer Staples
3.9%
Materials
1.5%
Cash & Other
2.2%
Top 10 Issuers
(%)
Microsoft Corp.
9.4%
London Stock Exchange Group PLC
4.9%
Deutsche Boerse AG
4.6%
Visa, Inc.
4.3%
Unilever PLC
3.9%
Mastercard, Inc.
3.8%
Intuit, Inc.
3.8%
Safran SA
3.3%
Alphabet, Inc.
3.3%
HDFC Bank Ltd.
3.2%
Top 10 Countries
(%)
United States
54.2%
United Kingdom
12.9%
Germany
6.7%
Netherlands
4.6%
France
3.3%
India
3.2%
Switzerland
3.0%
China
2.8%
Brazil
2.8%
Taiwan
2.5%
[22]
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Investor Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory Global Leaders Fund
Class Name Investor Shares
Trading Symbol BIALX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory Global Leaders Fund (the“Fund”) for the period of  July 1, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Investor Shares
$98
0.90%
Expenses Paid, Amount $ 98
Expense Ratio, Percent 0.90%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 12-month period ended June 30, 2025, the Fund outperformed its benchmark, the MSCI All Country World Index (ACWI).
WHAT FACTORS INFLUENCED PERFORMANCE
Outperformance was driven primarily by financials, consumer discretionary and industrials. Financials performed strongly in the face of volatility (e.g. Deutsche Boerse, B3), delivering counter-cyclical ballast to the portfolio. Industrials contributed to relative performance, particularly through the ongoing contribution of aerospace. Health Care contributed negatively, and we have exited two health care companies during the reporting period. Technology performed strongly in absolute terms. The Fund delivered downside capture during the market weakness in early 2025. While not an explicit target, we aim to identify companies that can help insulate our investors in bad times so we can compound a smaller loss thereafter.
POSITIONING
We are looking for high-quality companies with superior customer outcomes that we believe are able to pass on prices and generate high levels of recurring revenue while requiring low leverage. Sector and country diversification is an output of investment selection and capital allocation. During the year we added Rentokil and Experian. We exited TJX Companies, Adobe and Coloplast. We initiated and exited Illumina following an unusually short holding period due to a combination of supply-side and demand-side risks impacting our thesis.
Top Contributors
Deutsche Boerse AG
GE Aerospace
Safran SA
Mastercard Incorporated Class A
London Stock Exchange Group plc
Top Detractors
Illumina, Inc.
Adobe Inc.
Alphabet Inc. Class C
Edwards Lifesciences Corporation
Zoetis, Inc. Class A
PERFORMANCE
The Fund delivered absolute positive performance during the reporting period, outperforming the benchmark.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
ANNUAL AVERAGE TOTAL RETURN (%)
 
1 Year
5 Year
Since Inception
(07/01/2015)
Investor Shares
16.78
13.45
11.98
MSCI All Country World Index (ACWI)
16.17
13.65
9.93
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/funds/global-leaders-fund for recent performance information.
Net Assets $ 2,417,663,440
Holdings Count | $ / shares 34
Advisory Fees Paid, Amount $ 13,850,998
Investment Company Portfolio Turnover 22.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$2,417,663,440
Number of Holdings
34
Net Advisory Fee
$13,850,998
Portfolio Turnover
22%
Holdings [Text Block]
Top Sectors*
(%)
Financials
32.8%
Information Technology
22.7%
Industrials
18.9%
Health Care
8.1%
Communication Services
5.4%
Consumer Discretionary
4.5%
Consumer Staples
3.9%
Materials
1.5%
Cash & Other
2.2%
Top 10 Issuers
(%)
Microsoft Corp.
9.4%
London Stock Exchange Group PLC
4.9%
Deutsche Boerse AG
4.6%
Visa, Inc.
4.3%
Unilever PLC
3.9%
Mastercard, Inc.
3.8%
Intuit, Inc.
3.8%
Safran SA
3.3%
Alphabet, Inc.
3.3%
HDFC Bank Ltd.
3.2%
Top 10 Countries
(%)
United States
54.2%
United Kingdom
12.9%
Germany
6.7%
Netherlands
4.6%
France
3.3%
India
3.2%
Switzerland
3.0%
China
2.8%
Brazil
2.8%
Taiwan
2.5%
[23]
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Institutional Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory Sustainable International Leaders Fund
Class Name Institutional Shares
Trading Symbol BAILX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory Sustainable International Leaders Fund (the“Fund”) for the period of  July 1, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Institutional Shares
$92
0.85%
Expenses Paid, Amount $ 92
Expense Ratio, Percent 0.85%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 12-month period ended June 30, 2025, the Fund underperformed its benchmark, the MSCI ACWI ex USA Index.
WHAT FACTORS INFLUENCED PERFORMANCE
Underperformance was driven primarily by Industrials and Information Technology. Within Technology it was mainly the exposure to semiconductor end markets that are still recovering from cyclical lows (eg. NXP Semiconductor; certain ASML end markets) that detracted from performance. Health Care was the largest relative, positive contributor to performance while Financials delivered the largest contribution to absolute returns. The main driver being the counter-cyclical revenue drivers of financial market infrastructure companies (eg. Deutsche Boerse, B3) that benefited from the market volatility in 2025.
POSITIONING
International equity indices outperformed both global and U.S. indices over the reporting period and especially since the beginning of 2025. The Fund benefited from its regional exposure with the largest allocation being to Europe. During the year we added Richemont, Amadeus IT, AstraZeneca, Anta Sports, SAP and Taiwan Semiconductor Manufacturing. We exited Coloplast. We look for competitively advantaged businesses that earn high returns on invested capital (ROIC), are run by capable management teams and are attractively valued, have the ability to generate attractive through-the-cycle shareholder returns. Sector and country diversification is an output of stock picking.
Top Contributors
Deutsche Boerse AG
Safran SA
Airbus SE
B3 SA - Brasil, Bolsa, Balcao
CTS Eventim AG & Co. KGaA
Top Detractors
LVMH Moet Hennessy Louis Vuitton SE
Rentokil Initial plc
NXP Semiconductors NV
Diageo plc
ASML Holding NV
PERFORMANCE
The Fund delivered absolute positive performance during the reporting period, underperforming the benchmark.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
ANNUAL AVERAGE TOTAL RETURN (%)
 
1 Year
Since Inception
(02/28/2022)
Institutional Shares
15.64
6.92
MSCI ACWI ex USA Index
17.72
7.68
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/funds/sustainable-international-leaders-fund for recent performance information.
Net Assets $ 42,021,685
Holdings Count | $ / shares 35
Advisory Fees Paid, Amount $ 163,359
Investment Company Portfolio Turnover 47.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$42,021,685
Number of Holdings
35
Net Advisory Fee
$163,359
Portfolio Turnover
47%
Holdings [Text Block]
Top Sectors*
(%)
Industrials
31.2%
Financials
24.7%
Consumer Discretionary
16.1%
Information Technology
13.2%
Health Care
6.5%
Communication Services
2.9%
Consumer Staples
2.6%
Cash & Other
2.8%
Top 10 Issuers
(%)
Deutsche Boerse AG
6.4%
London Stock Exchange Group PLC
5.2%
Howden Joinery Group PLC
4.7%
Experian PLC
4.3%
Airbus SE
4.1%
HDFC Bank Ltd.
3.8%
AIA Group Ltd.
3.8%
Wolters Kluwer NV
3.7%
Rentokil Initial PLC
3.5%
Taiwan Semiconductor Manufacturing Co., Ltd.
3.4%
Top 10 Countries
(%)
United Kingdom
27.4%
Germany
10.3%
France
10.2%
United States
8.2%
Netherlands
6.7%
China
5.1%
India
5.1%
Switzerland
3.9%
Japan
3.5%
Taiwan
3.4%
[24]
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Investor Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory Sustainable International Leaders Fund
Class Name Investor Shares
Trading Symbol BISLX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory Sustainable International Leaders Fund (the“Fund”) for the period of  July 1, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Investor Shares
$108
1.00%
Expenses Paid, Amount $ 108
Expense Ratio, Percent 1.00%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 12-month period ended June 30, 2025, the Fund underperformed its benchmark, the MSCI ACWI ex USA Index.
WHAT FACTORS INFLUENCED PERFORMANCE
Underperformance was driven primarily by Industrials and Information Technology. Within Technology it was mainly the exposure to semiconductor end markets that are still recovering from cyclical lows (eg. NXP Semiconductor; certain ASML end markets) that detracted from performance. Health Care was the largest relative, positive contributor to performance while Financials delivered the largest contribution to absolute returns. The main driver being the counter-cyclical revenue drivers of financial market infrastructure companies (eg. Deutsche Boerse, B3) that benefited from the market volatility in 2025.
POSITIONING
International equity indices outperformed both global and U.S. indices over the reporting period and especially since the beginning of 2025. The Fund benefited from its regional exposure with the largest allocation being to Europe. During the year we added Richemont, Amadeus IT, AstraZeneca, Anta Sports, SAP and Taiwan Semiconductor Manufacturing. We exited Coloplast. We look for competitively advantaged businesses that earn high returns on invested capital (ROIC), are run by capable management teams and are attractively valued, have the ability to generate attractive through-the-cycle shareholder returns. Sector and country diversification is an output of stock picking.
Top Contributors
Deutsche Boerse AG
Safran SA
Airbus SE
B3 SA - Brasil, Bolsa, Balcao
CTS Eventim AG & Co. KGaA
Top Detractors
LVMH Moet Hennessy Louis Vuitton SE
Rentokil Initial plc
NXP Semiconductors NV
Diageo plc
ASML Holding NV
PERFORMANCE
The Fund delivered absolute positive performance during the reporting period, underperforming the benchmark.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
ANNUAL AVERAGE TOTAL RETURN (%)
 
1 Year
Since Inception
(02/28/2022)
Investor Shares
15.49
6.71
MSCI ACWI ex USA Index
17.72
7.68
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/funds/sustainable-international-leaders-fund for recent performance information.
Net Assets $ 42,021,685
Holdings Count | $ / shares 35
Advisory Fees Paid, Amount $ 163,359
Investment Company Portfolio Turnover 47.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$42,021,685
Number of Holdings
35
Net Advisory Fee
$163,359
Portfolio Turnover
47%
Holdings [Text Block]
Top Sectors*
(%)
Industrials
31.2%
Financials
24.7%
Consumer Discretionary
16.1%
Information Technology
13.2%
Health Care
6.5%
Communication Services
2.9%
Consumer Staples
2.6%
Cash & Other
2.8%
Top 10 Issuers
(%)
Deutsche Boerse AG
6.4%
London Stock Exchange Group PLC
5.2%
Howden Joinery Group PLC
4.7%
Experian PLC
4.3%
Airbus SE
4.1%
HDFC Bank Ltd.
3.8%
AIA Group Ltd.
3.8%
Wolters Kluwer NV
3.7%
Rentokil Initial PLC
3.5%
Taiwan Semiconductor Manufacturing Co., Ltd.
3.4%
Top 10 Countries
(%)
United Kingdom
27.4%
Germany
10.3%
France
10.2%
United States
8.2%
Netherlands
6.7%
China
5.1%
India
5.1%
Switzerland
3.9%
Japan
3.5%
Taiwan
3.4%
[25]
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Investor Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory Intermediate Income Fund
Class Name Investor Shares
Trading Symbol BIAIX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory Intermediate Income Fund (the“Fund”) for the period of  July 1, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Investor Shares
$55
0.53%
Expenses Paid, Amount $ 55
Expense Ratio, Percent 0.53%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 12-month period ending June 30, 2025, the Fund outperformed its regulatory benchmark, the Bloomberg U.S. Aggregate Bond Index.
WHAT FACTORS INFLUENCED PERFORMANCE
Although we experienced periods of risk aversion during the period, there was a decidedly robust bid for risk assets, especially after the tariff announcement. Positive contributions to performance were led by an overweight position in corporate credit during a period of compressing spreads. Security selection within corporate bonds was additive throughout the period as well given our downside focused research efforts. Our ongoing overweight in asset-backed bonds was additive as securitized credit outperformed mortgage bonds in a volatile interest rate environment. Active yield curve management resulted in mixed performance results as our mild yield curve steepening posture detracted at times as expected policy accommodation wax and waned.
POSITIONING
We maintained a mildly overweight duration profile over the entirety of the period, adjusting as dictated by incoming economic data. The Fund added to its overweight allocation to corporate bonds, market value and spread duration, based on elevated yields and ongoing strong corporate fundamentals. We continued to maintain a mildly overweight position in agency-backed mortgage bonds due to relatively attractive spreads and overall yields.
PERFORMANCE
The Fund outperformed its regulatory benchmark for the reported period. Exposure to spread sectors were additive as the economy continued to perform. This performance was further bolstered by strong corporate bond selection as fundamentals remained strong and spreads tightened markedly, especially after a bout of weakness post-tariff announcement. The primary detractors were duration positioning and mortgage bonds in a volatile interest rate environment.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
ANNUAL AVERAGE TOTAL RETURN (%)
 
1 Year
5 Year
10 Year
Investor Shares
6.24
0.13
1.64
Bloomberg U.S. Aggregate Bond Index
6.08
-0.73
1.76
Bloomberg Intermediate U.S. Aggregate Bond Index
6.69
0.23
1.80
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/funds/intermediate-income-fund for recent performance information.
Net Assets $ 128,582,672
Holdings Count | $ / shares 119
Advisory Fees Paid, Amount $ 370,608
Investment Company Portfolio Turnover 50.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$128,582,672
Number of Holdings
119
Net Advisory Fee
$370,608
Portfolio Turnover
50%
Holdings [Text Block]
Security Type
(%)
Agency Residential Mortgage-Backed Securities
32.6%
U.S. Treasury Securities
30.8%
Corporate Bonds
27.5%
Asset-Backed Securities
4.4%
Agency Commercial Mortgage-Backed Securities
1.8%
Money Market Funds
0.9%
Non-Agency Residential Mortgage-Backed Securities
0.5%
Non-Agency Commercial Mortgage-Backed Securities
0.5%
Futures Contracts
0.0%
Cash & Other
1.0%
Top 10 Issuers
(%)
United States Treasury Note
30.8%
Federal National Mortgage Association
17.8%
Federal Home Loan Mortgage Corp.
11.4%
Ginnie Mae II Pool
5.1%
Waste Connections, Inc.
1.5%
Verizon Master Trust
1.0%
AerCap Ireland Capital DAC / AerCap Global Aviation Trust
1.0%
Prologis LP
1.0%
Analog Devices, Inc.
1.0%
Kroger Co.
1.0%
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Advisor Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory Intermediate Income Fund
Class Name Advisor Shares
Trading Symbol BAIAX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory Intermediate Income Fund (the“Fund”) for the period of  July 1, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Advisor Shares
$80
0.78%
Expenses Paid, Amount $ 80
Expense Ratio, Percent 0.78%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 12-month period ending June 30, 2025, the Fund underperformed its regulatory benchmark, the Bloomberg U.S. Aggregate Bond Index.
WHAT FACTORS INFLUENCED PERFORMANCE
Although we experienced periods of risk aversion during the period, there was a decidedly robust bid for risk assets, especially after the tariff announcement. Positive contributions to performance were led by an overweight position in corporate credit during a period of compressing spreads. Security selection within corporate bonds was additive throughout the period as well given our downside focused research efforts. Our ongoing overweight in asset-backed bonds was additive as securitized credit outperformed mortgage bonds in a volatile interest rate environment. Active yield curve management resulted in mixed performance results as our mild yield curve steepening posture detracted at times as expected policy accommodation wax and waned.
POSITIONING
We maintained a mildly overweight duration profile over the entirety of the period, adjusting as dictated by incoming economic data. The Fund added to its overweight allocation to corporate bonds, market value and spread duration, based on elevated yields and ongoing strong corporate fundamentals. We continued to maintain a mildly overweight position in agency-backed mortgage bonds due to relatively attractive spreads and overall yields.
PERFORMANCE
The Fund underperformed its regulatory benchmark for the reported period. Exposure to spread sectors were additive as the economy continued to perform. This performance was further bolstered by strong corporate bond selection as fundamentals remained strong and spreads tightened markedly, especially after a bout of weakness post-tariff announcement. The primary detractors were duration positioning and mortgage bonds in a volatile interest rate environment.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
ANNUAL AVERAGE TOTAL RETURN (%)
 
1 Year
5 Year
10 Year
Advisor Shares
5.89
-0.14
1.38
Bloomberg U.S. Aggregate Bond Index
6.08
-0.73
1.76
Bloomberg Intermediate U.S. Aggregate Bond Index
6.69
0.23
1.80
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/funds/intermediate-income-fund for recent performance information.
Net Assets $ 128,582,672
Holdings Count | $ / shares 119
Advisory Fees Paid, Amount $ 370,608
Investment Company Portfolio Turnover 50.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$128,582,672
Number of Holdings
119
Net Advisory Fee
$370,608
Portfolio Turnover
50%
Holdings [Text Block]
Security Type
(%)
Agency Residential Mortgage-Backed Securities
32.6%
U.S. Treasury Securities
30.8%
Corporate Bonds
27.5%
Asset-Backed Securities
4.4%
Agency Commercial Mortgage-Backed Securities
1.8%
Money Market Funds
0.9%
Non-Agency Residential Mortgage-Backed Securities
0.5%
Non-Agency Commercial Mortgage-Backed Securities
0.5%
Futures Contracts
0.0%
Cash & Other
1.0%
Top 10 Issuers
(%)
United States Treasury Note
30.8%
Federal National Mortgage Association
17.8%
Federal Home Loan Mortgage Corp.
11.4%
Ginnie Mae II Pool
5.1%
Waste Connections, Inc.
1.5%
Verizon Master Trust
1.0%
AerCap Ireland Capital DAC / AerCap Global Aviation Trust
1.0%
Prologis LP
1.0%
Analog Devices, Inc.
1.0%
Kroger Co.
1.0%
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Institutional Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory Sustainable Bond Fund
Class Name Institutional Shares
Trading Symbol BAISX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory Sustainable Bond Fund (the“Fund”) for the period of  July 1, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Institutional Shares
$42
0.41%
Expenses Paid, Amount $ 42
Expense Ratio, Percent 0.41%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 12-month period ended June 30, 2025, the Fund underperformed its regulatory benchmark, the Bloomberg U.S. Aggregate Bond Index.
WHAT FACTORS INFLUENCED PERFORMANCE
Although we experienced periods of risk aversion during the period, there was a decidedly robust bid for risk assets, especially after the tariff announcement. Positive contributors to performance were led by our overweight position in corporate credit and generally positive security selection. Our ongoing overweight in asset-backed bonds was also additive as securitized credit outperformed mortgage bonds in a volatile interest rate environment. Active yield curve management resulted in mixed performance results as our mild yield curve steepening posture detracted at times as expected policy accommodation wax and waned.
POSITIONING
We maintained an overweight position in corporate credit, by market value, during the period, while tactically increasing spread duration over time. Given the tumult in the mortgage bond market, we moved to an overweight position to capitalize on elevate yields and spreads from a high-quality sector. Toward the end of the period, we reduced our duration overweight which was reflective of recent sticky inflation data and continued full employment. We did maintain a yield curve steepening bias as well as an underweight to the longest key rates given the ongoing sizable deficit projections.
PERFORMANCE
The Fund underperformed its regulatory benchmark for the reported period. The primary detractors were duration positioning and mortgage bonds in a volatile interest rate environment. This was offset, partially, through an overweight in corporate credit and asset-backed bonds during a period of compressing spreads, particularly after a bout of weakness post tariff-announcement.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
ANNUAL AVERAGE TOTAL RETURN (%)
 
1 Year
5 Year
Since Inception
(07/02/2018)
Institutional Shares
5.68
-0.73
1.65
Bloomberg U.S. Aggregate Bond Index
6.08
-0.73
1.79
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/funds/sustainable-bond-fund for recent performance information.
Net Assets $ 575,811,377
Holdings Count | $ / shares 169
Advisory Fees Paid, Amount $ 1,734,450
Investment Company Portfolio Turnover 104.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$575,811,377
Number of Holdings
169
Net Advisory Fee
$1,734,450
Portfolio Turnover
104%
Holdings [Text Block]
Security Type
(%)
Corporate Bonds
37.3%
Agency Residential Mortgage-Backed Securities
29.4%
U.S. Treasury Securities
21.2%
Foreign Government Agency Issues
5.1%
Asset-Backed Securities
4.8%
Money Market Funds
2.1%
Non-Agency Commercial Mortgage-Backed Securities
1.6%
Municipal Bonds
0.9%
U.S. Treasury Bills
0.1%
Cash & Other
-2.5%
Top 10 Issuers
(%)
Federal National Mortgage Association
13.6%
United States Treasury Note
12.0%
Ginnie Mae II Pool
7.3%
Federal Home Loan Mortgage Corp.
6.8%
Kreditanstalt fuer Wiederaufbau
6.4%
United States Treasury Bond
5.1%
European Investment Bank
5.1%
United States Treasury STRIP
4.0%
First American Government Obligations Fund
2.1%
BX Trust
1.6%
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Investor Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory Sustainable Bond Fund
Class Name Investor Shares
Trading Symbol BASBX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory Sustainable Bond Fund (the“Fund”) for the period of  July 1, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Investor Shares
$47
0.46%
Expenses Paid, Amount $ 47
Expense Ratio, Percent 0.46%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 12-month period ended June 30, 2025, the Fund underperformed its regulatory benchmark, the Bloomberg U.S. Aggregate Bond Index.
WHAT FACTORS INFLUENCED PERFORMANCE
Although we experienced periods of risk aversion during the period, there was a decidedly robust bid for risk assets, especially after the tariff announcement. Positive contributors to performance were led by our overweight position in corporate credit and generally positive security selection. Our ongoing overweight in asset-backed bonds was also additive as securitized credit outperformed mortgage bonds in a volatile interest rate environment. Active yield curve management resulted in mixed performance results as our mild yield curve steepening posture detracted at times as expected policy accommodation wax and waned.
POSITIONING
We maintained an overweight position in corporate credit, by market value, during the period, while tactically increasing spread duration over time. Given the tumult in the mortgage bond market, we moved to an overweight position to capitalize on elevate yields and spreads from a high-quality sector. Toward the end of the period, we reduced our duration overweight which was reflective of recent sticky inflation data and continued full employment. We did maintain a yield curve steepening bias as well as an underweight to the longest key rates given the ongoing sizable deficit projections.
PERFORMANCE
The Fund underperformed its regulatory benchmark for the reported period. The primary detractors were duration positioning and mortgage bonds in a volatile interest rate environment. This was offset, partially, through an overweight in corporate credit and asset-backed bonds during a period of compressing spreads, particularly after a bout of weakness post tariff-announcement.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
ANNUAL AVERAGE TOTAL RETURN (%)
 
1 Year
5 Year
Since Inception
(08/07/2017)
Investor Shares
5.75
-0.76
1.27
Bloomberg U.S. Aggregate Bond Index
6.08
-0.73
1.44
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/funds/sustainable-bond-fund for recent performance information.
Net Assets $ 575,811,377
Holdings Count | $ / shares 169
Advisory Fees Paid, Amount $ 1,734,450
Investment Company Portfolio Turnover 104.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$575,811,377
Number of Holdings
169
Net Advisory Fee
$1,734,450
Portfolio Turnover
104%
Holdings [Text Block]
Security Type
(%)
Corporate Bonds
37.3%
Agency Residential Mortgage-Backed Securities
29.4%
U.S. Treasury Securities
21.2%
Foreign Government Agency Issues
5.1%
Asset-Backed Securities
4.8%
Money Market Funds
2.1%
Non-Agency Commercial Mortgage-Backed Securities
1.6%
Municipal Bonds
0.9%
U.S. Treasury Bills
0.1%
Cash & Other
-2.5%
Top 10 Issuers
(%)
Federal National Mortgage Association
13.6%
United States Treasury Note
12.0%
Ginnie Mae II Pool
7.3%
Federal Home Loan Mortgage Corp.
6.8%
Kreditanstalt fuer Wiederaufbau
6.4%
United States Treasury Bond
5.1%
European Investment Bank
5.1%
United States Treasury STRIP
4.0%
First American Government Obligations Fund
2.1%
BX Trust
1.6%
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Investor Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory Maryland Bond Fund
Class Name Investor Shares
Trading Symbol BIAMX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory Maryland Bond Fund (the“Fund”) for the period of  July 1, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Investor Shares
$48
0.48%
Expenses Paid, Amount $ 48
Expense Ratio, Percent 0.48%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 12-month period ended June 30, 2025, the Fund outperformed its regulatory benchmark, the Bloomberg Municipal Bond Index.
WHAT FACTORS INFLUENCED PERFORMANCE
Positive contributions to relative performance were led by active yield curve positioning and individual security selection, during a period of elevated interest rate volatility. The municipal yield curve steepened dramatically over the past year as short-term municipal bond yields fell, while longer-maturity municipal bond yields rose. The Fund’s active yield curve positioning benefitted relative and absolute returns during the period as we added exposure to longer-duration bonds as the curve steepened. The Fund also benefitted from an overweight in ultra-short duration floating-rate, and short-callable bonds which helped provide downside protection during a volatile interest rate environment. Bond selection was also additive to performance as many of our active sector and individual credit overweights outperformed the broad market.
POSITIONING
We tactically added to a duration barbell with an overweight to ultra-short duration bonds, and large weightings to longer duration bonds. We maintained an overweight in revenue-backed municipal sectors and added tactically to Local GOs, Transportation, and Housing Revenue, while trimming our positions in Higher Education and Healthcare.
PERFORMANCE
The Fund outperformed its benchmark in a volatile market. Much of our outperformance was driven by downside protection, particularly during the first half of 2025 as longer maturity municipal bond yields rose sharply. This performance was further bolstered by solid credit selection and active duration management for the entire period.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
ANNUAL AVERAGE TOTAL RETURN (%)
 
1 Year
5 Year
10 Year
Investor Shares
1.70
0.83
1.74
Bloomberg Municipal Bond Index
1.11
0.51
2.20
Bloomberg Municipal 1-15 Year Index
2.63
0.86
2.13
Bloomberg 1-10 Year Blended Municipal Bond Index
3.47
0.96
1.96
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/funds/maryland-bond-fund for recent performance information.
Net Assets $ 164,283,859
Holdings Count | $ / shares 66
Advisory Fees Paid, Amount $ 505,391
Investment Company Portfolio Turnover 46.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$164,283,859
Number of Holdings
66
Net Advisory Fee
$505,391
Portfolio Turnover
46%
Holdings [Text Block]
Security Type
(%)
Municipal Bonds
97.3%
Money Market Funds
1.8%
Cash & Other
0.9%
Industry
(%)
Revenue Bonds
78.0%
General Obligation Bonds
19.3%
Cash & Other
2.7%
Top 10 Issuers
(%)
Maryland Economic Development Corporation
11.5%
County of Frederick MD
10.1%
State of Maryland Department of Transportation
8.0%
Maryland Stadium Authority
6.7%
MedStar Health
5.8%
University of Maryland Medical System
5.2%
Maryland Community Development Administration
4.6%
State of Maryland
4.5%
Main Street Natural Gas, Inc.
3.4%
Miami-Dade County Expressway Authority
3.1%
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Institutional Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory Tax Exempt Bond Fund
Class Name Institutional Shares
Trading Symbol BTEIX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory Tax Exempt Bond Fund (the“Fund”) for the period of  July 1, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Institutional Shares
$42
0.41%
Expenses Paid, Amount $ 42
Expense Ratio, Percent 0.41%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 12-month period ended June 30, 2025, the Fund outperformed its regulatory benchmark, the Bloomberg Municipal Bond Index.
WHAT FACTORS INFLUENCED PERFORMANCE
Positive contributions to relative performance were led by active yield curve positioning and individual security selection, during a period of elevated interest rate volatility. The municipal yield curve steepened dramatically over the past year as short-term municipal bond yields fell, while longer-maturity municipal bond yields rose. The Fund’s active yield curve positioning benefitted relative and absolute returns during the period as we added exposure to longer-duration bonds as the curve steepened. The Fund also benefitted from an overweight in ultra-short duration floating-rate, and short-callable bonds which helped mitigate risk during a volatile interest rate environment. Bond selection was also additive to performance as many of our active sector and individual credit overweights outperformed the broad market.
POSITIONING
We tactically added to a duration barbell with an overweight to ultra-short duration bonds, and large weightings to longer duration bonds. We maintained an overweight in revenue-backed municipal sectors and added tactically to Prepaid Gas, Airports, and Housing Revenue, while trimming our positions in Higher Education and Healthcare.
PERFORMANCE
The Fund outperformed its benchmark in a volatile market. Much of our outperformance was driven by mitigating risk, particularly during the first half of 2025 as longer maturity municipal bond yields rose sharply. This performance was further bolstered by solid credit selection and active duration management for the entire period.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
ANNUAL AVERAGE TOTAL RETURN (%)
 
1 Year
5 Year
Since Inception
(07/02/2018)
Institutional Shares
2.44
1.58
2.27
Bloomberg Municipal Bond Index
1.11
0.51
1.93
Bloomberg Municipal 1-15 Year Index
2.63
0.86
2.07
Bloomberg 1-10 Year Blended Municipal Bond Index
3.47
0.96
2.00
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/funds/tax-exempt-bond-fund for recent performance information.
Net Assets $ 1,019,941,148
Holdings Count | $ / shares 169
Advisory Fees Paid, Amount $ 3,041,771
Investment Company Portfolio Turnover 40.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$1,019,941,148
Number of Holdings
169
Net Advisory Fee
$3,041,771
Portfolio Turnover
40%
Holdings [Text Block]
Top 10 States
(%)
Texas
11.5%
New York
9.9%
Alabama
8.5%
Florida
8.2%
Illinois
5.5%
Georgia
5.1%
Wisconsin
5.0%
California
4.2%
New Jersey
3.3%
Kentucky
3.1%
Top 10 Issuers
(%)
Black Belt Energy Gas District
4.7%
Public Finance Authority
3.5%
Miami-Dade County Florida Expressway Authority
3.4%
Main Street Natural Gas, Inc.
3.3%
Texas Municipal Gas Acquisition and Supply Corp. II
3.2%
Kentucky Public Energy Authority
3.1%
Tobacco Settlement Financing Corp.
2.8%
First American Government Obligations Fund
2.7%
Southeast Energy Authority A Cooperative District
2.7%
New Jersey Transportation Trust Fund Authority
2.4%
Security Type
(%)
Municipal Bonds
98.9%
Money Market Funds
2.7%
Cash & Other
-1.6%
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Investor Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory Tax Exempt Bond Fund
Class Name Investor Shares
Trading Symbol BIAEX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory Tax Exempt Bond Fund (the“Fund”) for the period of  July 1, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Investor Shares
$47
0.46%
Expenses Paid, Amount $ 47
Expense Ratio, Percent 0.46%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 12-month period ended June 30, 2025, the Fund outperformed its regulatory benchmark, the Bloomberg Municipal Bond Index.
WHAT FACTORS INFLUENCED PERFORMANCE
Positive contributions to relative performance were led by active yield curve positioning and individual security selection, during a period of elevated interest rate volatility. The municipal yield curve steepened dramatically over the past year as short-term municipal bond yields fell, while longer-maturity municipal bond yields rose. The Fund’s active yield curve positioning benefitted relative and absolute returns during the period as we added exposure to longer-duration bonds as the curve steepened. The Fund also benefitted from an overweight in ultra-short duration floating-rate, and short-callable bonds which helped mitigate risk during a volatile interest rate environment. Bond selection was also additive to performance as many of our active sector and individual credit overweights outperformed the broad market.
POSITIONING
We tactically added to a duration barbell with an overweight to ultra-short duration bonds, and large weightings to longer duration bonds. We maintained an overweight in revenue-backed municipal sectors and added tactically to Prepaid Gas, Airports, and Housing Revenue, while trimming our positions in Higher Education and Healthcare.
PERFORMANCE
The Fund outperformed its benchmark in a volatile market. Much of our outperformance was driven by mitigating risk, particularly during the first half of 2025 as longer maturity municipal bond yields rose sharply. This performance was further bolstered by solid credit selection and active duration management for the entire period.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
ANNUAL AVERAGE TOTAL RETURN (%)
 
1 Year
5 Year
10 Year
Investor Shares
2.28
1.51
2.39
Bloomberg Municipal Bond Index
1.11
0.51
2.20
Bloomberg Municipal 1–15 Year Index
2.63
0.86
2.13
Bloomberg 1-10 Year Blended Municipal Bond Index
3.47
0.96
1.96
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/funds/tax-exempt-bond-fund for recent performance information.
Net Assets $ 1,019,941,148
Holdings Count | $ / shares 169
Advisory Fees Paid, Amount $ 3,041,771
Investment Company Portfolio Turnover 40.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$1,019,941,148
Number of Holdings
169
Net Advisory Fee
$3,041,771
Portfolio Turnover
40%
Holdings [Text Block]
Top 10 States
(%)
Texas
11.5%
New York
9.9%
Alabama
8.5%
Florida
8.2%
Illinois
5.5%
Georgia
5.1%
Wisconsin
5.0%
California
4.2%
New Jersey
3.3%
Kentucky
3.1%
Top 10 Issuers
(%)
Black Belt Energy Gas District
4.7%
Public Finance Authority
3.5%
Miami-Dade County Florida Expressway Authority
3.4%
Main Street Natural Gas, Inc.
3.3%
Texas Municipal Gas Acquisition and Supply Corp. II
3.2%
Kentucky Public Energy Authority
3.1%
Tobacco Settlement Financing Corp.
2.8%
First American Government Obligations Fund
2.7%
Southeast Energy Authority A Cooperative District
2.7%
New Jersey Transportation Trust Fund Authority
2.4%
Security Type
(%)
Municipal Bonds
98.9%
Money Market Funds
2.7%
Cash & Other
-1.6%
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Investor Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory Tax-Exempt Sustainable Bond Fund
Class Name Investor Shares
Trading Symbol BITEX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory Tax-Exempt Sustainable Bond Fund (the“Fund”) for the period of  July 1, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Investor Shares
$48
0.47%
Expenses Paid, Amount $ 48
Expense Ratio, Percent 0.47%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 12-month period ended June 30, 2025, the Fund outperformed its regulatory benchmark, the Bloomberg Municipal Bond Index.
WHAT FACTORS INFLUENCED PERFORMANCE
Positive contributions to relative performance were led by active yield curve positioning and individual security selection, during a period of elevated interest rate volatility. The municipal yield curve steepened dramatically over the past year as short-term municipal bond yields fell, while longer-maturity municipal bond yields rose. The Fund’s active yield curve positioning benefitted relative and absolute returns during the period as we added exposure to longer-duration bonds as the curve steepened. The Fund also benefitted from an overweight in ultra-short duration floating-rate, and short-callable bonds which helped provide risk mitigation during a volatile interest rate environment. Bond selection was also additive to performance as many of our active sector and individual credit overweights outperformed the broad market.
POSITIONING
We tactically added to a duration barbell with an overweight to ultra-short duration bonds, and large weightings to longer duration bonds. We maintained an overweight in revenue-backed municipal sectors and added tactically to Prepaid Power, Airports, and Affordable Housing, while trimming our positions in Higher Education and Healthcare.
PERFORMANCE
The Fund outperformed its benchmark in a volatile market. Much of our outperformance was driven by mitigating risk, particularly during the first half of 2025 as longer maturity municipal bond yields rose sharply. This performance was further bolstered by solid credit selection and active duration management for the entire period.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
ANNUAL AVERAGE TOTAL RETURN (%)
 
1 Year
5 Year
Since Inception
(12/02/2019)
Investor Shares
2.15
0.67
0.53
Bloomberg Municipal Bond Index
1.11
0.51
0.90
Bloomberg Municipal 1-15 Year Index
2.63
0.86
1.23
Bloomberg 1-10 Year Blended Municipal Bond Index
3.47
0.96
1.30
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/funds/tax-exempt-sustainable-bond-fund for recent performance information.
Net Assets $ 291,746,440
Holdings Count | $ / shares 104
Advisory Fees Paid, Amount $ 873,602
Investment Company Portfolio Turnover 37.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$291,746,440
Number of Holdings
104
Net Advisory Fee
$873,602
Portfolio Turnover
37%
Holdings [Text Block]
Top 10 States
(%)
California
17.0%
New York
10.5%
Texas
8.3%
Illinois
6.1%
Maryland
5.8%
Wisconsin
5.7%
Colorado
4.1%
Florida
3.4%
Indiana
3.3%
Utah
3.3%
Top 10 Issuers
(%)
California Community Choice Financing Authority
8.7%
California Earthquake Authority
5.6%
Maryland Health & Higher Educational Facilities Authority
4.0%
New York Transportation Development Corp.
3.4%
Utah Housing Corp.
3.3%
First American Government Obligations Fund
2.7%
New York Liberty Development Corp.
2.7%
Northside Independent School District
2.6%
New Jersey Economic Development Authority
2.4%
York County South Carolina Fort Mill School District No. 4
2.3%
Security Type
(%)
Municipal Bonds
97.2%
Money Market Funds
2.7%
Cash & Other
0.1%
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Institutional Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory Mortgage Securities Fund
Class Name Institutional Shares
Trading Symbol BAFZX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory Mortgage Securities Fund (the“Fund”) for the period of  July 1, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Institutional Shares
$46
0.45%
Expenses Paid, Amount $ 46
Expense Ratio, Percent 0.45%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 12-month period ended June 30, 2025, the Fund outperformed its regulatory benchmark, the Bloomberg U.S. Aggregate Bond Index.
WHAT FACTORS INFLUENCED PERFORMANCE
Despite periods of volatility, spreads on risk assets generally ended the period in a stronger position as demand for risk remained robust. Similarly, interest rate volatility managed to decline over the period and elevated interest rates constrained prepayment activity, enabling the mortgage sector to produce tighter spreads and positive excess returns relative to Treasuries and risk-free assets. Our significant allocations to agency-backed mortgage securities, in addition to asset-backed and commercial mortgage-backed credit, were key contributors to the Fund’s outperformance relative to the benchmark. Additionally, our active duration and yield curve management benefitted performance. On the other hand, our underweight to shorter term mortgages detracted from performance as these securities outperformed during the period.
POSITIONING
We continued to add to mortgage basis over the past year as we believe that agency-backed mortgages continue to offer compelling carry and relative value. We also maintain an overweight to asset-backed and commercial mortgage-backed securitized credit. We maintain a slight overall duration overweight, but remain underweight the longest points on the yield curve as inflation and longer-term deficit risks remain present.
Top Contributors
US Duration Position, US IG Credit
Top Detractors
Non-US Sovereign Debt, Agency Mortgages, Structured Products
PERFORMANCE
The Fund delivered positive returns and outperformed its regulatory benchmark over the reported period. Exposure to spread sectors and selection within these sectors supported performance as risk assets broadly ended the year in a better position.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
ANNUAL AVERAGE TOTAL RETURN (%)
 
1 Year
5 Year
10 Year
Institutional Shares
6.29
-0.15
1.56
Bloomberg U.S. Aggregate Bond Index
6.08
-0.73
1.76
Bloomberg Mortgage Backed Securities Index
6.52
-0.60
1.30
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/funds/mortgage-securities-fund for recent performance information.
Net Assets $ 289,676,716
Holdings Count | $ / shares 340
Advisory Fees Paid, Amount $ 870,085
Investment Company Portfolio Turnover 221.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$289,676,716
Number of Holdings
340
Net Advisory Fee
$870,085
Portfolio Turnover
221%
Holdings [Text Block]
Security Type
(%)
Agency Residential Mortgage-Backed Securities
98.2%
Money Market Funds
4.6%
Asset-Backed Securities
4.6%
Agency Commercial Mortgage-Backed Securities
3.6%
Non-Agency Commercial Mortgage-Backed Securities
1.0%
Municipal Bonds
0.1%
Futures Contracts
-0.2%
Cash & Other
-11.9%
Top 10 Issuers
(%)
Federal National Mortgage Association
56.4%
Federal Home Loan Mortgage Corp.
27.2%
Ginnie Mae II Pool
13.7%
First American Government Obligations Fund
4.6%
Government National Mortgage Association
3.3%
Verizon Master Trust
1.0%
BX Trust
1.0%
Toyota Auto Receivables Owner Trust
0.7%
Ford Credit Auto Owner Trust
0.7%
Fannie Mae Grantor Trust
0.7%
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Investor Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory Mortgage Securities Fund
Class Name Investor Shares
Trading Symbol BIAZX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory Mortgage Securities Fund (the“Fund”) for the period of  July 1, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Investor Shares
$52
0.50%
Expenses Paid, Amount $ 52
Expense Ratio, Percent 0.50%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 12-month period ended June 30, 2025, the Fund outperformed its regulatory benchmark, the Bloomberg U.S. Aggregate Bond Index.
WHAT FACTORS INFLUENCED PERFORMANCE
Despite periods of volatility, spreads on risk assets generally ended the period in a stronger position as demand for risk remained robust. Similarly, interest rate volatility managed to decline over the period and elevated interest rates constrained prepayment activity, enabling the mortgage sector to produce tighter spreads and positive excess returns relative to Treasuries and risk-free assets. Our significant allocations to agency-backed mortgage securities, in addition to asset-backed and commercial mortgage-backed credit, were key contributors to the Fund’s outperformance relative to the benchmark. Additionally, our active duration and yield curve management benefitted performance. On the other hand, our underweight to shorter term mortgages detracted from performance as these securities outperformed during the period.
POSITIONING
We continued to add to mortgage basis over the past year as we believe that agency-backed mortgages continue to offer compelling carry and relative value. We also maintain an overweight to asset-backed and commercial mortgage-backed securitized credit. We maintain a slight overall duration overweight, but remain underweight the longest points on the yield curve as inflation and longer-term deficit risks remain present.
PERFORMANCE
The Fund delivered positive returns and outperformed its regulatory benchmark over the reported period. Exposure to spread sectors and selection within these sectors supported performance as risk assets broadly ended the year in a better position.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
ANNUAL AVERAGE TOTAL RETURN (%)
 
1 Year
5 Year
10 Year
Investor Shares
6.10
-0.21
1.52
Bloomberg U.S. Aggregate Bond Index
6.08
-0.73
1.76
Bloomberg Mortgage Backed Securities Index
6.52
-0.60
1.30
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/funds/mortgage-securities-fund for recent performance information.
Net Assets $ 289,676,716
Holdings Count | $ / shares 340
Advisory Fees Paid, Amount $ 870,085
Investment Company Portfolio Turnover 221.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$289,676,716
Number of Holdings
340
Net Advisory Fee
$870,085
Portfolio Turnover
221%
Holdings [Text Block]
Security Type
(%)
Agency Residential Mortgage-Backed Securities
98.2%
Money Market Funds
4.6%
Asset-Backed Securities
4.6%
Agency Commercial Mortgage-Backed Securities
3.6%
Non-Agency Commercial Mortgage-Backed Securities
1.0%
Municipal Bonds
0.1%
Futures Contracts
-0.2%
Cash & Other
-11.9%
Top 10 Issuers
(%)
Federal National Mortgage Association
56.4%
Federal Home Loan Mortgage Corp.
27.2%
Ginnie Mae II Pool
13.7%
First American Government Obligations Fund
4.6%
Government National Mortgage Association
3.3%
Verizon Master Trust
1.0%
BX Trust
1.0%
Toyota Auto Receivables Owner Trust
0.7%
Ford Credit Auto Owner Trust
0.7%
Fannie Mae Grantor Trust
0.7%
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Institutional Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory - WMC Strategic European Equity Fund
Class Name Institutional Shares
Trading Symbol BAFHX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory - WMC Strategic European Equity Fund (the“Fund”) for the period of  July 1, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Institutional Shares
$125
1.04%
Expenses Paid, Amount $ 125
Expense Ratio, Percent 1.04%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 12-month period ended June 30, 2025, the Fund outperformed its benchmark, the MSCI Europe Index.
WHAT FACTORS INFLUENCED PERFORMANCE
Strong security selection was the key driver of relative outperformance. Particularly, the positive stock selection results in Industrials, Health Care, and Consumer Staples contributed to relative returns. Weaker stock selection in Communication Services detracted from performance. Sector allocation, a result of our bottom-up stock selection process, also added to relative returns. Positive allocation effects driven by our overweight in Industrials and underweight in Health Care was partially offset by our underweight position in Financials and lack of exposure to Utilities detracted from performance. At the issuer level, our top two relative contributors were our overweight position in Rheinmetall and not holding Novo Nordisk, while our top two relative detractors were our overweight position in Bunzl and out-of-benchmark allocation to Vistry Group.
POSITIONING
We remain overweight industrials and consumer staples, with large underweights to information technology and consumer discretionary. We continue to hold a zero weight in Utilities. We will continue to use volatility to opportunistically adjust our positioning. We think the portfolio is well positioned, despite potential for near term volatility.
Top Contributors
Rheinmetall AG
British American Tobacco p.l.c.
Erste Group Bank AG
Technip Energies NV
AIB Group plc
Top Detractors
Vistry Group PLC
Heineken NV
Glencore plc
Bunzl plc
RS Group PLC
PERFORMANCE
The Fund posted positive active returns driven by positive bottom-up stock selection and positive allocation effects.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
ANNUAL AVERAGE TOTAL RETURN (%)
 
1 Year
5 Year
10 Year
Institutional Shares
40.15
17.19
10.70
MSCI Europe Index
18.38
12.38
6.78
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/funds/wmc-strategic-european-equity-fund for recent performance information.
Net Assets $ 684,062,760
Holdings Count | $ / shares 66
Advisory Fees Paid, Amount $ 3,714,220
Investment Company Portfolio Turnover 47.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$684,062,760
Number of Holdings
66
Net Advisory Fee
$3,714,220
Portfolio Turnover
47%
Holdings [Text Block]
Top Sectors*
(%)
Industrials
29.6%
Financials
20.3%
Consumer Staples
13.3%
Health Care
10.7%
Materials
6.5%
Communication Services
4.5%
Consumer Discretionary
4.2%
Information Technology
3.1%
Energy
2.8%
Cash & Other
5.0%
Top 10 Issuers
(%)
British American Tobacco PLC
4.7%
First American Government Obligations Fund
4.0%
AIB Group PLC
3.4%
Smiths Group PLC
3.3%
Unilever PLC
3.0%
Haleon PLC
3.0%
Bunzl PLC
2.8%
Technip Energies NV
2.7%
Erste Group Bank AG
2.7%
Publicis Groupe SA
2.7%
Top 10 Countries
(%)
United Kingdom
27.0%
France
13.3%
Germany
13.1%
Ireland
6.5%
Switzerland
6.4%
United States
5.0%
Belgium
4.9%
Denmark
4.3%
Spain
3.9%
Austria
3.6%
[26]
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Investor Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory - WMC Strategic European Equity Fund
Class Name Investor Shares
Trading Symbol BIAHX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory - WMC Strategic European Equity Fund (the“Fund”) for the period of  July 1, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Investor Shares
$143
1.19%
Expenses Paid, Amount $ 143
Expense Ratio, Percent 1.19%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 12-month period ended June 30, 2025, the Fund outperformed its benchmark, the MSCI Europe Index.
WHAT FACTORS INFLUENCED PERFORMANCE
Strong security selection was the key driver of relative outperformance. Particularly, the positive stock selection results in Industrials, Health Care, and Consumer Staples contributed to relative returns. Weaker stock selection in Communication Services detracted from performance. Sector allocation, a result of our bottom-up stock selection process, also added to relative returns. Positive allocation effects driven by our overweight in Industrials and underweight in Health Care was partially offset by our underweight position in Financials and lack of exposure to Utilities detracted from performance. At the issuer level, our top two relative contributors were our overweight position in Rheinmetall and not holding Novo Nordisk, while our top two relative detractors were our overweight position in Bunzl and out-of-benchmark allocation to Vistry Group.
POSITIONING
We remain overweight industrials and consumer staples, with large underweights to information technology and consumer discretionary. We continue to hold a zero weight in Utilities. We will continue to use volatility to opportunistically adjust our positioning. We think the portfolio is well positioned, despite potential for near term volatility.
Top Contributors
Rheinmetall AG
British American Tobacco p.l.c.
Erste Group Bank AG
Technip Energies NV
AIB Group plc
Top Detractors
Vistry Group PLC
Heineken NV
Glencore plc
Bunzl plc
RS Group PLC
PERFORMANCE
The Fund posted positive active returns driven by positive bottom-up stock selection and positive allocation effects.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
ANNUAL AVERAGE TOTAL RETURN (%)
 
1 Year
5 Year
10 Year
Investor Shares
40.04
17.03
10.54
MSCI Europe Index
18.38
12.38
6.78
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/funds/wmc-strategic-european-equity-fund for recent performance information.
Net Assets $ 684,062,760
Holdings Count | $ / shares 66
Advisory Fees Paid, Amount $ 3,714,220
Investment Company Portfolio Turnover 47.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$684,062,760
Number of Holdings
66
Net Advisory Fee
$3,714,220
Portfolio Turnover
47%
Holdings [Text Block]
Top Sectors*
(%)
Industrials
29.6%
Financials
20.3%
Consumer Staples
13.3%
Health Care
10.7%
Materials
6.5%
Communication Services
4.5%
Consumer Discretionary
4.2%
Information Technology
3.1%
Energy
2.8%
Cash & Other
5.0%
Top 10 Issuers
(%)
British American Tobacco PLC
4.7%
First American Government Obligations Fund
4.0%
AIB Group PLC
3.4%
Smiths Group PLC
3.3%
Unilever PLC
3.0%
Haleon PLC
3.0%
Bunzl PLC
2.8%
Technip Energies NV
2.7%
Erste Group Bank AG
2.7%
Publicis Groupe SA
2.7%
Top 10 Countries
(%)
United Kingdom
27.0%
France
13.3%
Germany
13.1%
Ireland
6.5%
Switzerland
6.4%
United States
5.0%
Belgium
4.9%
Denmark
4.3%
Spain
3.9%
Austria
3.6%
[27]
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Advisor Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory - WMC Strategic European Equity Fund
Class Name Advisor Shares
Trading Symbol BAHAX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory - WMC Strategic European Equity Fund (the“Fund”) for the period of  July 1, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Advisor Shares
$173
1.44%
Expenses Paid, Amount $ 173
Expense Ratio, Percent 1.44%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 12-month period ended June 30, 2025, the Fund outperformed its benchmark, the MSCI Europe Index.
WHAT FACTORS INFLUENCED PERFORMANCE
Strong security selection was the key driver of relative outperformance. Particularly, the positive stock selection results in Industrials, Health Care, and Consumer Staples contributed to relative returns. Weaker stock selection in Communication Services detracted from performance. Sector allocation, a result of our bottom-up stock selection process, also added to relative returns. Positive allocation effects driven by our overweight in Industrials and underweight in Health Care was partially offset by our underweight position in Financials and lack of exposure to Utilities detracted from performance. At the issuer level, our top two relative contributors were our overweight position in Rheinmetall and not holding Novo Nordisk, while our top two relative detractors were our overweight position in Bunzl and out-of-benchmark allocation to Vistry Group.
POSITIONING
We remain overweight industrials and consumer staples, with large underweights to information technology and consumer discretionary. We continue to hold a zero weight in Utilities. We will continue to use volatility to opportunistically adjust our positioning. We think the portfolio is well positioned, despite potential for near term volatility.
Top Contributors
Rheinmetall AG
British American Tobacco p.l.c.
Erste Group Bank AG
Technip Energies NV
AIB Group plc
Top Detractors
Vistry Group PLC
Heineken NV
Glencore plc
Bunzl plc
RS Group PLC
PERFORMANCE
The Fund posted positive active returns driven by positive bottom-up stock selection and positive allocation effects.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
ANNUAL AVERAGE TOTAL RETURN (%)
 
1 Year
5 Year
10 Year
Advisor Shares
39.65
16.73
10.26
MSCI Europe Index
18.38
12.38
6.78
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/funds/wmc-strategic-european-equity-fund for recent performance information.
Net Assets $ 684,062,760
Holdings Count | $ / shares 66
Advisory Fees Paid, Amount $ 3,714,220
Investment Company Portfolio Turnover 47.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$684,062,760
Number of Holdings
66
Net Advisory Fee
$3,714,220
Portfolio Turnover
47%
Holdings [Text Block]
Top Sectors*
(%)
Industrials
29.6%
Financials
20.3%
Consumer Staples
13.3%
Health Care
10.7%
Materials
6.5%
Communication Services
4.5%
Consumer Discretionary
4.2%
Information Technology
3.1%
Energy
2.8%
Cash & Other
5.0%
Top 10 Issuers
(%)
British American Tobacco PLC
4.7%
First American Government Obligations Fund
4.0%
AIB Group PLC
3.4%
Smiths Group PLC
3.3%
Unilever PLC
3.0%
Haleon PLC
3.0%
Bunzl PLC
2.8%
Technip Energies NV
2.7%
Erste Group Bank AG
2.7%
Publicis Groupe SA
2.7%
Top 10 Countries
(%)
United Kingdom
27.0%
France
13.3%
Germany
13.1%
Ireland
6.5%
Switzerland
6.4%
United States
5.0%
Belgium
4.9%
Denmark
4.3%
Spain
3.9%
Austria
3.6%
[28]
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Institutional Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory - Beutel Goodman Large-Cap Value Fund
Class Name Institutional Shares
Trading Symbol BVALX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory - Beutel Goodman Large-Cap Value Fund (the“Fund”) for the period of  July 1, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Institutional Shares
$55
0.54%
Expenses Paid, Amount $ 55
Expense Ratio, Percent 0.54%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 12-month period ended June 30, 2025, the Fund underperformed its benchmark, the Russell 1000® Index.
WHAT FACTORS INFLUENCED PERFORMANCE
Relative underperformance was driven primarily by stock selection in the Communication Services, Health Care, Information Technology and Consumer Discretionary sectors. Stock selection in Materials and an underweight in Industrials also dragged on performance. Having no exposure to the underperforming Energy sector was the main contributor to relative performance during the period.
POSITIONING
During the period, we exited Fund positions in Gentex Corp., Polaris Inc., Tempur Sealy International Inc. (which recently changed its name to Somnigroup International Inc.), Kellanova and Biogen Inc.
We initiated new Fund positions in  Elevance Health Inc., Medtronic plc and Chubb Limited.
Top Contributors
Kellanova
eBay Inc.
American Express Company
BlackRock, Inc.
Westinghouse Air Brake Technologies Corporation
Top Detractors
Merck & Co., Inc.
Biogen Inc.
Polaris Inc.
Campbell’s Company
Harley-Davidson, Inc.
PERFORMANCE
The Fund posted positive returns during the period, which will likely be remembered in large part for the events surrounding “Liberation Day”. The April 2 announcement, which ushered in a new era for global trade, introduced a 10% global baseline tariff as well as higher reciprocal tariffs targeting countries with large trade deficits with the United States. This led to a broad sell-off in equity markets before the U.S. government announced a 90-day moratorium on
tariffs for most countries. Although the baseline 10% tariff was maintained, the pause drove a market reversal, with equities rebounding through to the end of the period.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
ANNUAL AVERAGE TOTAL RETURN (%)
 
1 Year
5 Year
Since Inception
(02/13/2018)
Institutional Shares
1.94
11.99
9.44
Russell 1000® Index
15.66
16.30
13.82
Russell 1000® Value Index
13.70
13.93
9.14
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/funds/beutel-goodman-large-cap-value-fund for recent performance information.
Net Assets $ 1,668,425,758
Holdings Count | $ / shares 28
Advisory Fees Paid, Amount $ 8,604,338
Investment Company Portfolio Turnover 27.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$1,668,425,758
Number of Holdings
28
Net Advisory Fee
$8,604,338
Portfolio Turnover
27%
Holdings [Text Block]
Top Sectors*
(%)
Financials
20.6%
Information Technology
19.1%
Health Care
18.4%
Industrials
10.7%
Communication Services
10.0%
Consumer Discretionary
7.0%
Consumer Staples
6.9%
Materials
4.7%
Cash & Other
2.6%
Top 10 Issuers
(%)
Gen Digital, Inc.
5.1%
American Express Co.
5.1%
QUALCOMM, Inc.
4.9%
eBay, Inc.
4.9%
Merck & Co., Inc.
4.8%
PPG Industries, Inc.
4.7%
Medtronic PLC
4.7%
Comcast Corp.
4.6%
Westinghouse Air Brake Technologies Corp.
4.6%
Amdocs Ltd.
4.6%
[29]
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Investor Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory - Beutel Goodman Large-Cap Value Fund
Class Name Investor Shares
Trading Symbol BIAVX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory - Beutel Goodman Large-Cap Value Fund (the“Fund”) for the period of  July 1, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Investor Shares
$70
0.69%
Expenses Paid, Amount $ 70
Expense Ratio, Percent 0.69%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 12-month period ended June 30, 2025, the Fund underperformed its benchmark, the Russell 1000® Index.
WHAT FACTORS INFLUENCED PERFORMANCE
Relative underperformance was driven primarily by stock selection in the Communication Services, Health Care, Information Technology and Consumer Discretionary sectors. Stock selection in Materials and an underweight in Industrials also dragged on performance. Having no exposure to the underperforming Energy sector was the main contributor to relative performance during the period.
POSITIONING
During the period, we exited Fund positions in Gentex Corp., Polaris Inc., Tempur Sealy International Inc. (which recently changed its name to Somnigroup International Inc.), Kellanova and Biogen Inc.
We initiated new Fund positions in  Elevance Health Inc., Medtronic plc and Chubb Limited.
Top Contributors
Kellanova
eBay Inc.
American Express Company
BlackRock, Inc.
Westinghouse Air Brake Technologies Corporation
Top Detractors
Merck & Co., Inc.
Biogen Inc.
Polaris Inc.
Campbell’s Company
Harley-Davidson, Inc.
PERFORMANCE
The Fund posted positive returns during the period, which will likely be remembered in large part for the events surrounding “Liberation Day”. The April 2 announcement, which ushered in a new era for global trade, introduced a 10% global baseline tariff as well as higher reciprocal tariffs targeting countries with large trade deficits with the United States. This led to a broad sell-off in equity markets before the U.S. government announced a 90-day moratorium on
tariffs for most countries. Although the baseline 10% tariff was maintained, the pause drove a market reversal, with equities rebounding through to the end of the period.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
ANNUAL AVERAGE TOTAL RETURN (%)
 
1 Year
Since Inception
(06/30/2021)
Investor Shares
1.74
5.73
Russell 1000® Index
15.66
10.43
Russell 1000® Value Index
13.70
7.51
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/funds/beutel-goodman-large-cap-value-fund for recent performance information.
Net Assets $ 1,668,425,758
Holdings Count | $ / shares 28
Advisory Fees Paid, Amount $ 8,604,338
Investment Company Portfolio Turnover 27.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$1,668,425,758
Number of Holdings
28
Net Advisory Fee
$8,604,338
Portfolio Turnover
27%
Holdings [Text Block]
Top Sectors*
(%)
Financials
20.6%
Information Technology
19.1%
Health Care
18.4%
Industrials
10.7%
Communication Services
10.0%
Consumer Discretionary
7.0%
Consumer Staples
6.9%
Materials
4.7%
Cash & Other
2.6%
Top 10 Issuers
(%)
Gen Digital, Inc.
5.1%
American Express Co.
5.1%
QUALCOMM, Inc.
4.9%
eBay, Inc.
4.9%
Merck & Co., Inc.
4.8%
PPG Industries, Inc.
4.7%
Medtronic PLC
4.7%
Comcast Corp.
4.6%
Westinghouse Air Brake Technologies Corp.
4.6%
Amdocs Ltd.
4.6%
[30]
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Institutional Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory-WMC Japan Equity Fund
Class Name Institutional Shares
Trading Symbol BAFJX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory-WMC Japan Equity Fund (the“Fund”) for the period of  September 30, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment*
Costs paid as a percentage of a $10,000 investment*
Institutional Shares
$78
1.00%
[31]
Expenses Paid, Amount $ 78
Expense Ratio, Percent 1.00%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 9-month period ended June 30, 2025, the Fund outperformed its benchmark, the TOPIX Index.
WHAT FACTORS INFLUENCED PERFORMANCE
Security selection was the primary driver of relative outperformance. Strong selection in Information Technology and Materials was partially offset by selection in Communication Services and Consumer Discretionary. Sector allocation, a result of our bottom-up stock selection process, however, detracted from returns. Allocation effect was driven by our overweight to Materials and underweight to Communication Services, but partially offset by our underweight to Consumer Staples and Consumer Discretionary.
POSITIONING
Over the 9-month period, we increased our exposure the most to Materials, Real Estate and Health Care, while rotating away from Consumer Discretionary and Industrials. At the sector level, our largest overweight were Materials, Health Care and Real Estate. We were most underweight to Industrials, Communication Services and Consumer Staples.
Top Contributors
Sony Group Corporation
Mitsubishi UFJ Financial Group, Inc.
TechnoPro Holdings Inc.
THK Co., Ltd.
Shionogi & Co., Ltd.
Top Detractors
Daiichi Sankyo Company, Limited
Shin-Etsu Chemical Co Ltd
MISUMI Group Inc.
Astellas Pharma Inc.
dip Corporation
PERFORMANCE
Following a challenging ’24 (we struggled in a narrow large cap, momentum rally), in 1H ’25 our strategy generated alpha amid volatile market environments (1Q: reversal of ’24 factor pattern, 2Q: resurgence of risk-momentum rally driven by domestic/thematics areas). Our engagement led value realization (shareholder return improvement, takeovers, etc.) on the back of accelerating shareholder activism, contributed positively to alpha.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
Cumulative TOTAL RETURN (%)
 
Since Inception
(09/30/2024)
Institutional Shares
8.90
TOPIX Index
8.15
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/wmc-japan-equity-fund for recent performance information.
Net Assets $ 306,307,899
Holdings Count | $ / shares 79
Advisory Fees Paid, Amount $ 917,513
Investment Company Portfolio Turnover 73.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$306,307,899
Number of Holdings
79
Net Advisory Fee
$917,513
Portfolio Turnover
73%
Holdings [Text Block]
Top Sectors*
(%)
Industrials
18.1%
Materials
16.8%
Consumer Discretionary
14.5%
Financials
13.9%
Information Technology
10.8%
Health Care
10.5%
Real Estate
5.6%
Communication Services
4.1%
Consumer Staples
2.4%
Cash & Other
3.3%
Top 10 Issuers
(%)
First American Government Obligations Fund
4.1%
KDDI Corp.
3.1%
Shin-Etsu Chemical Co. Ltd.
3.0%
Daiichi Sankyo Co. Ltd.
2.7%
Sony Group Corp.
2.6%
Tokyo Electron Ltd.
2.6%
Sumitomo Mitsui Trust Group, Inc.
2.5%
Asahi Group Holdings Ltd.
2.4%
Dai-ichi Life Holdings, Inc.
2.3%
Shionogi & Co. Ltd.
2.2%
Top Countries
(%)
Japan
96.7%
United States
4.1%
[32]
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
Investor Shares  
Shareholder Report [Line Items]  
Fund Name Brown Advisory-WMC Japan Equity Fund
Class Name Investor Shares
Trading Symbol BIJEX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about the Brown Advisory-WMC Japan Equity Fund (the“Fund”) for the period of  September 30, 2024, to June 30, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://www.brownadvisory.com/mf/how-to-invest. You can also request this information by contacting us at 1-800-540-6807.
Additional Information Phone Number 1-800-540-6807
Additional Information Website https://www.brownadvisory.com/mf/how-to-invest
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE PAST YEAR? (based on a hypothetical $10,000 investment)
Class Name
Costs of a $10,000 investment*
Costs paid as a percentage of a $10,000 investment*
Investor Shares
$90
1.15%
[33]
Expenses Paid, Amount $ 90
Expense Ratio, Percent 1.15%
Factors Affecting Performance [Text Block]
HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?
For the 9-month period ended June 30, 2025, the Fund outperformed its benchmark, the TOPIX Index.
WHAT FACTORS INFLUENCED PERFORMANCE
Security selection was the primary driver of relative outperformance. Strong selection in Information Technology and Materials was partially offset by selection in Communication Services and Consumer Discretionary. Sector allocation, a result of our bottom-up stock selection process, however, detracted from returns. Allocation effect was driven by our overweight to Materials and underweight to Communication Services, but partially offset by our underweight to Consumer Staples and Consumer Discretionary.
POSITIONING
Over the 9-month period, we increased our exposure the most to Materials, Real Estate and Health Care, while rotating away from Consumer Discretionary and Industrials. At the sector level, our largest overweight were Materials, Health Care and Real Estate. We were most underweight to Industrials, Communication Services and Consumer Staples.
Top Contributors
Sony Group Corporation
Mitsubishi UFJ Financial Group, Inc.
TechnoPro Holdings Inc.
THK Co., Ltd.
Shionogi & Co., Ltd.
Top Detractors
Daiichi Sankyo Company, Limited
Shin-Etsu Chemical Co Ltd
MISUMI Group Inc.
Astellas Pharma Inc.
dip Corporation
PERFORMANCE
Following a challenging ’24 (we struggled in a narrow large cap, momentum rally), in 1H ’25 our strategy generated alpha amid volatile market environments (1Q: reversal of ’24 factor pattern, 2Q: resurgence of risk-momentum rally driven by domestic/thematics areas). Our engagement led value realization (shareholder return improvement, takeovers, etc.) on the back of accelerating shareholder activism, contributed positively to alpha.
Performance Past Does Not Indicate Future [Text] The Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]
image
Average Annual Return [Table Text Block]
Cumulative TOTAL RETURN (%)
 
Since Inception
(09/30/2024)
Investor Shares
8.80
TOPIX Index
8.15
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block]
Visit https://www.brownadvisory.com/mf/wmc-japan-equity-fund for recent performance information.
Net Assets $ 306,307,899
Holdings Count | $ / shares 79
Advisory Fees Paid, Amount $ 917,513
Investment Company Portfolio Turnover 73.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Net Assets
$306,307,899
Number of Holdings
79
Net Advisory Fee
$917,513
Portfolio Turnover
73%
Holdings [Text Block]
Top Sectors*
(%)
Industrials
18.1%
Materials
16.8%
Consumer Discretionary
14.5%
Financials
13.9%
Information Technology
10.8%
Health Care
10.5%
Real Estate
5.6%
Communication Services
4.1%
Consumer Staples
2.4%
Cash & Other
3.3%
Top 10 Issuers
(%)
First American Government Obligations Fund
4.1%
KDDI Corp.
3.1%
Shin-Etsu Chemical Co. Ltd.
3.0%
Daiichi Sankyo Co. Ltd.
2.7%
Sony Group Corp.
2.6%
Tokyo Electron Ltd.
2.6%
Sumitomo Mitsui Trust Group, Inc.
2.5%
Asahi Group Holdings Ltd.
2.4%
Dai-ichi Life Holdings, Inc.
2.3%
Shionogi & Co. Ltd.
2.2%
Top Countries
(%)
Japan
96.7%
United States
4.1%
[34]
Updated Prospectus Web Address https://www.brownadvisory.com/mf/how-to-invest
[1]
* The Global Industry Classification Standard (GICS®) was developed by and is the exclusive property of MSCI, Inc. and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI, Inc. and S&P and has been licensed for use by the Administrator, U.S. Bancorp Fund Services, LLC.
[2]
* The Global Industry Classification Standard (GICS®) was developed by and is the exclusive property of MSCI, Inc. and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI, Inc. and S&P and has been licensed for use by the Administrator, U.S. Bancorp Fund Services, LLC.
[3]
* The Global Industry Classification Standard (GICS®) was developed by and is the exclusive property of MSCI, Inc. and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI, Inc. and S&P and has been licensed for use by the Administrator, U.S. Bancorp Fund Services, LLC.
[4]
* The Global Industry Classification Standard (GICS®) was developed by and is the exclusive property of MSCI, Inc. and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI, Inc. and S&P and has been licensed for use by the Administrator, U.S. Bancorp Fund Services, LLC.
[5]
* The Global Industry Classification Standard (GICS®) was developed by and is the exclusive property of MSCI, Inc. and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI, Inc. and S&P and has been licensed for use by the Administrator, U.S. Bancorp Fund Services, LLC.
[6]
* The Global Industry Classification Standard (GICS®) was developed by and is the exclusive property of MSCI, Inc. and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI, Inc. and S&P and has been licensed for use by the Administrator, U.S. Bancorp Fund Services, LLC.
[7]
* The Global Industry Classification Standard (GICS®) was developed by and is the exclusive property of MSCI, Inc. and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI, Inc. and S&P and has been licensed for use by the Administrator, U.S. Bancorp Fund Services, LLC.
[8]
* The Global Industry Classification Standard (GICS®) was developed by and is the exclusive property of MSCI, Inc. and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI, Inc. and S&P and has been licensed for use by the Administrator, U.S. Bancorp Fund Services, LLC.
[9]
* The Global Industry Classification Standard (GICS®) was developed by and is the exclusive property of MSCI, Inc. and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI, Inc. and S&P and has been licensed for use by the Administrator, U.S. Bancorp Fund Services, LLC.
[10]
* The Global Industry Classification Standard (GICS®) was developed by and is the exclusive property of MSCI, Inc. and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI, Inc. and S&P and has been licensed for use by the Administrator, U.S. Bancorp Fund Services, LLC.
[11]
* The Global Industry Classification Standard (GICS®) was developed by and is the exclusive property of MSCI, Inc. and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI, Inc. and S&P and has been licensed for use by the Administrator, U.S. Bancorp Fund Services, LLC.
[12]
* The Global Industry Classification Standard (GICS®) was developed by and is the exclusive property of MSCI, Inc. and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI, Inc. and S&P and has been licensed for use by the Administrator, U.S. Bancorp Fund Services, LLC.
[13]
* The Global Industry Classification Standard (GICS®) was developed by and is the exclusive property of MSCI, Inc. and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI, Inc. and S&P and has been licensed for use by the Administrator, U.S. Bancorp Fund Services, LLC.
[14]
* The Global Industry Classification Standard (GICS®) was developed by and is the exclusive property of MSCI, Inc. and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI, Inc. and S&P and has been licensed for use by the Administrator, U.S. Bancorp Fund Services, LLC.
[15]
* The Global Industry Classification Standard (GICS®) was developed by and is the exclusive property of MSCI, Inc. and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI, Inc. and S&P and has been licensed for use by the Administrator, U.S. Bancorp Fund Services, LLC.
[16]
* The Global Industry Classification Standard (GICS®) was developed by and is the exclusive property of MSCI, Inc. and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI, Inc. and S&P and has been licensed for use by the Administrator, U.S. Bancorp Fund Services, LLC.
[17]
* The Global Industry Classification Standard (GICS®) was developed by and is the exclusive property of MSCI, Inc. and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI, Inc. and S&P and has been licensed for use by the Administrator, U.S. Bancorp Fund Services, LLC.
[18]
* The Global Industry Classification Standard (GICS®) was developed by and is the exclusive property of MSCI, Inc. and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI, Inc. and S&P and has been licensed for use by the Administrator, U.S. Bancorp Fund Services, LLC.
[19]
* The Global Industry Classification Standard (GICS®) was developed by and is the exclusive property of MSCI, Inc. and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI, Inc. and S&P and has been licensed for use by the Administrator, U.S. Bancorp Fund Services, LLC.
[20]
* The Global Industry Classification Standard (GICS®) was developed by and is the exclusive property of MSCI, Inc. and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI, Inc. and S&P and has been licensed for use by the Administrator, U.S. Bancorp Fund Services, LLC.
[21]
* The Global Industry Classification Standard (GICS®) was developed by and is the exclusive property of MSCI, Inc. and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI, Inc. and S&P and has been licensed for use by the Administrator, U.S. Bancorp Fund Services, LLC.
[22]
* The Global Industry Classification Standard (GICS®) was developed by and is the exclusive property of MSCI, Inc. and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI, Inc. and S&P and has been licensed for use by the Administrator, U.S. Bancorp Fund Services, LLC.
[23]
* The Global Industry Classification Standard (GICS®) was developed by and is the exclusive property of MSCI, Inc. and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI, Inc. and S&P and has been licensed for use by the Administrator, U.S. Bancorp Fund Services, LLC.
[24]
* The Global Industry Classification Standard (GICS®) was developed by and is the exclusive property of MSCI, Inc. and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI, Inc. and S&P and has been licensed for use by the Administrator, U.S. Bancorp Fund Services, LLC.
[25]
* The Global Industry Classification Standard (GICS®) was developed by and is the exclusive property of MSCI, Inc. and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI, Inc. and S&P and has been licensed for use by the Administrator, U.S. Bancorp Fund Services, LLC.
[26]
* The Global Industry Classification Standard (GICS®) was developed by and is the exclusive property of MSCI, Inc. and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI, Inc. and S&P and has been licensed for use by the Administrator, U.S. Bancorp Fund Services, LLC.
[27]
* The Global Industry Classification Standard (GICS®) was developed by and is the exclusive property of MSCI, Inc. and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI, Inc. and S&P and has been licensed for use by the Administrator, U.S. Bancorp Fund Services, LLC.
[28]
* The Global Industry Classification Standard (GICS®) was developed by and is the exclusive property of MSCI, Inc. and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI, Inc. and S&P and has been licensed for use by the Administrator, U.S. Bancorp Fund Services, LLC.
[29]
* The Global Industry Classification Standard (GICS®) was developed by and is the exclusive property of MSCI, Inc. and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI, Inc. and S&P and has been licensed for use by the Administrator, U.S. Bancorp Fund Services, LLC.
[30]
* The Global Industry Classification Standard (GICS®) was developed by and is the exclusive property of MSCI, Inc. and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI, Inc. and S&P and has been licensed for use by the Administrator, U.S. Bancorp Fund Services, LLC.
[31]
* Costs of a $10,000 investment is for the period from inception on September 30, 2024 to June 30, 2025. Costs paid as a percentage of a $10,000 investment is annualized.
[32]
* The Global Industry Classification Standard (GICS®) was developed by and is the exclusive property of MSCI, Inc. and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI, Inc. and S&P and has been licensed for use by the Administrator, U.S. Bancorp Fund Services, LLC.
[33]
* Costs of a $10,000 investment is for the period from inception on September 30, 2024 to June 30, 2025. Costs paid as a percentage of a $10,000 investment is annualized.
[34]
* The Global Industry Classification Standard (GICS®) was developed by and is the exclusive property of MSCI, Inc. and Standard & Poor’s Financial Services LLC (“S&P”). GICS® is a service mark of MSCI, Inc. and S&P and has been licensed for use by the Administrator, U.S. Bancorp Fund Services, LLC.