v3.25.4
Expense Example
Oct. 31, 2025
USD ($)
BBH Select Large Cap ETF | BBH Select Large Cap ETF  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 73
Expense Example, with Redemption, 3 Years 228
Expense Example, with Redemption, 5 Years 396
Expense Example, with Redemption, 10 Years 882
BBH Select Mid Cap ETF | BBH Select Mid Cap ETF  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 83
Expense Example, with Redemption, 3 Years 259
Expense Example, with Redemption, 5 Years 450
Expense Example, with Redemption, 10 Years 1,003
BBH Partner Fund - International Equity | Class I Shares  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 64
Expense Example, with Redemption, 3 Years 201
Expense Example, with Redemption, 5 Years 350
Expense Example, with Redemption, 10 Years 786
BBH Limited Duration Fund | Class N Shares  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 36
Expense Example, with Redemption, 3 Years 143
Expense Example, with Redemption, 5 Years 260
Expense Example, with Redemption, 10 Years 602
BBH Limited Duration Fund | Class I Shares  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 28
Expense Example, with Redemption, 3 Years 87
Expense Example, with Redemption, 5 Years 152
Expense Example, with Redemption, 10 Years 343
BBH INCOME FUND | CLASS N SHARES  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 72
Expense Example, with Redemption, 3 Years 225
BBH INCOME FUND | CLASS I SHARES  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 45
Expense Example, with Redemption, 3 Years 141
Expense Example, with Redemption, 5 Years 246
Expense Example, with Redemption, 10 Years 553
BBH Intermediate Municipal Bond Fund | Class N Shares  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 66
Expense Example, with Redemption, 3 Years 219
Expense Example, with Redemption, 5 Years 385
Expense Example, with Redemption, 10 Years 865
BBH Intermediate Municipal Bond Fund | Class I Shares  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 45
Expense Example, with Redemption, 3 Years 141
Expense Example, with Redemption, 5 Years 246
Expense Example, with Redemption, 10 Years 553
BBH U.S. Government Money Market Fund | Institutional Shares  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 23
Expense Example, with Redemption, 3 Years 72
Expense Example, with Redemption, 5 Years 125
Expense Example, with Redemption, 10 Years $ 281