John Hancock Municipal Opportunities Fund Annual Fund Operating Expenses - Classes A C I and R6 [Member] - John Hancock Municipal Opportunities Fund |
May 31, 2025 |
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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, 2026</span><span style="font-family:Arial Narrow;font-size:8pt;">July 31, 2027</span><span style="font-family:Arial Narrow;font-size:8pt;">September 30, 2026</span> | |||||||||||
| Class A | ||||||||||||
| Prospectus [Line Items] | ||||||||||||
| Management Fees (as a percentage of Assets) | 0.47% | |||||||||||
| Distribution and Service (12b-1) Fees | 0.25% | |||||||||||
| Other Expenses (as a percentage of Assets): | 0.14% | [1] | ||||||||||
| Acquired Fund Fees and Expenses | 0.01% | [2] | ||||||||||
| Expenses (as a percentage of Assets) | 0.87% | [3] | ||||||||||
| Fee Waiver or Reimbursement | (0.13%) | [4],[5] | ||||||||||
| Net Expenses (as a percentage of Assets) | 0.74% | |||||||||||
| Class C | ||||||||||||
| Prospectus [Line Items] | ||||||||||||
| Management Fees (as a percentage of Assets) | 0.47% | |||||||||||
| Distribution and Service (12b-1) Fees | 1.00% | |||||||||||
| Other Expenses (as a percentage of Assets): | 0.14% | [1] | ||||||||||
| Acquired Fund Fees and Expenses | 0.01% | [2] | ||||||||||
| Expenses (as a percentage of Assets) | 1.62% | [3] | ||||||||||
| Fee Waiver or Reimbursement | (0.13%) | [4],[5] | ||||||||||
| Net Expenses (as a percentage of Assets) | 1.49% | |||||||||||
| Class I | ||||||||||||
| Prospectus [Line Items] | ||||||||||||
| Management Fees (as a percentage of Assets) | 0.47% | |||||||||||
| Distribution and Service (12b-1) Fees | 0.00% | |||||||||||
| Other Expenses (as a percentage of Assets): | 0.14% | [1] | ||||||||||
| Acquired Fund Fees and Expenses | 0.01% | [2] | ||||||||||
| Expenses (as a percentage of Assets) | 0.62% | [3] | ||||||||||
| Fee Waiver or Reimbursement | (0.03%) | [4] | ||||||||||
| Net Expenses (as a percentage of Assets) | 0.59% | |||||||||||
| Class R6 | ||||||||||||
| Prospectus [Line Items] | ||||||||||||
| Management Fees (as a percentage of Assets) | 0.47% | |||||||||||
| Distribution and Service (12b-1) Fees | 0.00% | |||||||||||
| Other Expenses (as a percentage of Assets): | 0.07% | |||||||||||
| Acquired Fund Fees and Expenses | 0.01% | [2] | ||||||||||
| Expenses (as a percentage of Assets) | 0.55% | [3] | ||||||||||
| Fee Waiver or Reimbursement | (0.03%) | [4] | ||||||||||
| Net Expenses (as a percentage of Assets) | 0.52% | |||||||||||
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