v3.25.2
John Hancock High Yield Municipal Bond Fund Expense Example - Classes A C I and R6 [Member] - John Hancock High Yield Municipal Bond Fund
May 31, 2025
USD ($)
Class A  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 484
Expense Example, with Redemption, 3 Years 723
Expense Example, with Redemption, 5 Years 981
Expense Example, with Redemption, 10 Years 1,717
Class C  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 264
Expense Example, with Redemption, 3 Years 569
Expense Example, with Redemption, 5 Years 1,000
Expense Example, with Redemption, 10 Years 2,003
Class I  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 73
Expense Example, with Redemption, 3 Years 268
Expense Example, with Redemption, 5 Years 480
Expense Example, with Redemption, 10 Years 1,090
Class R6  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 64
Expense Example, with Redemption, 3 Years 243
Expense Example, with Redemption, 5 Years 436
Expense Example, with Redemption, 10 Years $ 996