S000016637 [Member] Annual Fund Operating Expenses - Western Asset Pennsylvania Municipals Fund |
Mar. 31, 2026 |
|||||
|---|---|---|---|---|---|---|
| Prospectus [Line Items] | ||||||
| Fee Waiver or Reimbursement over Assets, Date of Termination | December 31, 2027 | |||||
| Class A | ||||||
| Prospectus [Line Items] | ||||||
| Management Fees (as a percentage of Assets) | 0.45% | |||||
| Distribution and Service (12b-1) Fees | 0.15% | |||||
| Other Expenses (as a percentage of Assets): | 0.30% | |||||
| Expenses (as a percentage of Assets) | 0.90% | |||||
| Fee Waiver or Reimbursement | [1] | |||||
| Net Expenses (as a percentage of Assets) | 0.90% | |||||
| Class C | ||||||
| Prospectus [Line Items] | ||||||
| Management Fees (as a percentage of Assets) | 0.45% | |||||
| Distribution and Service (12b-1) Fees | 0.70% | |||||
| Other Expenses (as a percentage of Assets): | 0.32% | |||||
| Expenses (as a percentage of Assets) | 1.47% | |||||
| Fee Waiver or Reimbursement | [1] | |||||
| Net Expenses (as a percentage of Assets) | 1.47% | |||||
| Class FI | ||||||
| Prospectus [Line Items] | ||||||
| Management Fees (as a percentage of Assets) | 0.45% | |||||
| Distribution and Service (12b-1) Fees | 0.25% | |||||
| Other Expenses (as a percentage of Assets): | 0.43% | [2] | ||||
| Expenses (as a percentage of Assets) | 1.13% | |||||
| Fee Waiver or Reimbursement | (0.28%) | [1] | ||||
| Net Expenses (as a percentage of Assets) | 0.85% | |||||
| Class I | ||||||
| Prospectus [Line Items] | ||||||
| Management Fees (as a percentage of Assets) | 0.45% | |||||
| Distribution and Service (12b-1) Fees | 0.00% | |||||
| Other Expenses (as a percentage of Assets): | 0.29% | |||||
| Expenses (as a percentage of Assets) | 0.74% | |||||
| Fee Waiver or Reimbursement | (0.19%) | [1] | ||||
| Net Expenses (as a percentage of Assets) | 0.55% | |||||
| Class IS | ||||||
| Prospectus [Line Items] | ||||||
| Management Fees (as a percentage of Assets) | 0.45% | |||||
| Distribution and Service (12b-1) Fees | 0.00% | |||||
| Other Expenses (as a percentage of Assets): | 0.23% | [2] | ||||
| Expenses (as a percentage of Assets) | 0.68% | |||||
| Fee Waiver or Reimbursement | (0.16%) | [1] | ||||
| Net Expenses (as a percentage of Assets) | 0.52% | |||||
| ||||||