Annual Fund Operating Expenses - Class A C I R6 [Member] - John Hancock California Municipal Bond Fund |
May 31, 2026 |
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| Prospectus [Line Items] | ||||||||||
| Fee Waiver or Reimbursement over Assets, Date of Termination | <span style="font-family:Arial Narrow;font-size:8pt;">September 30, 2027</span><span style="font-family:Arial Narrow;font-size:8pt;">September 30, 2027</span> | |||||||||
| Class A | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Management Fees (as a percentage of Assets) | 0.51% | |||||||||
| Distribution and Service (12b-1) Fees | 0.15% | |||||||||
| Component1 Other Expenses | 0.07% | |||||||||
| Component2 Other Expenses | 0.16% | |||||||||
| Other Expenses (as a percentage of Assets): | 0.23% | |||||||||
| Acquired Fund Fees and Expenses | 0.01% | [1] | ||||||||
| Expenses (as a percentage of Assets) | 0.90% | [2] | ||||||||
| Fee Waiver or Reimbursement | (0.15%) | [3] | ||||||||
| Net Expenses (as a percentage of Assets) | 0.75% | |||||||||
| Class C | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Management Fees (as a percentage of Assets) | 0.51% | |||||||||
| Distribution and Service (12b-1) Fees | 1.00% | |||||||||
| Component1 Other Expenses | 0.07% | |||||||||
| Component2 Other Expenses | 0.16% | |||||||||
| Other Expenses (as a percentage of Assets): | 0.23% | |||||||||
| Acquired Fund Fees and Expenses | 0.01% | [1] | ||||||||
| Expenses (as a percentage of Assets) | 1.75% | [2] | ||||||||
| Fee Waiver or Reimbursement | (0.25%) | [3],[4] | ||||||||
| Net Expenses (as a percentage of Assets) | 1.50% | |||||||||
| Class I | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Management Fees (as a percentage of Assets) | 0.51% | |||||||||
| Distribution and Service (12b-1) Fees | 0.00% | |||||||||
| Component1 Other Expenses | 0.07% | |||||||||
| Component2 Other Expenses | 0.16% | |||||||||
| Other Expenses (as a percentage of Assets): | 0.23% | |||||||||
| Acquired Fund Fees and Expenses | 0.01% | [1] | ||||||||
| Expenses (as a percentage of Assets) | 0.75% | [2] | ||||||||
| Fee Waiver or Reimbursement | (0.15%) | [3] | ||||||||
| Net Expenses (as a percentage of Assets) | 0.60% | |||||||||
| Class R6 | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Management Fees (as a percentage of Assets) | 0.51% | |||||||||
| Distribution and Service (12b-1) Fees | 0.00% | |||||||||
| Component1 Other Expenses | 0.07% | |||||||||
| Component2 Other Expenses | 0.08% | |||||||||
| Other Expenses (as a percentage of Assets): | 0.15% | |||||||||
| Acquired Fund Fees and Expenses | 0.01% | [1] | ||||||||
| Expenses (as a percentage of Assets) | 0.67% | [2] | ||||||||
| Fee Waiver or Reimbursement | (0.15%) | [3] | ||||||||
| Net Expenses (as a percentage of Assets) | 0.52% | |||||||||
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