S000016644 [Member] Annual Fund Operating Expenses - Western Asset California Municipals Fund |
Feb. 28, 2026 |
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| Prospectus [Line Items] | ||||||||
| Fee Waiver or Reimbursement over Assets, Date of Termination | December 31, 2027 | |||||||
| Class C | ||||||||
| Prospectus [Line Items] | ||||||||
| Management Fees (as a percentage of Assets) | 0.45% | |||||||
| Distribution and Service (12b-1) Fees | 0.70% | |||||||
| Component1 Other Expenses | 0.15% | |||||||
| Component2 Other Expenses | 0.18% | |||||||
| Other Expenses (as a percentage of Assets): | 0.33% | |||||||
| Expenses (as a percentage of Assets) | 1.48% | |||||||
| Fee Waiver or Reimbursement | [1] | |||||||
| Net Expenses (as a percentage of Assets) | 1.48% | |||||||
| Class I | ||||||||
| Prospectus [Line Items] | ||||||||
| Management Fees (as a percentage of Assets) | 0.45% | |||||||
| Distribution and Service (12b-1) Fees | 0.00% | |||||||
| Component1 Other Expenses | 0.15% | |||||||
| Component2 Other Expenses | 0.20% | |||||||
| Other Expenses (as a percentage of Assets): | 0.35% | |||||||
| Expenses (as a percentage of Assets) | 0.80% | |||||||
| Fee Waiver or Reimbursement | (0.10%) | [1] | ||||||
| Net Expenses (as a percentage of Assets) | 0.70% | [2] | ||||||
| Class A | ||||||||
| Prospectus [Line Items] | ||||||||
| Management Fees (as a percentage of Assets) | 0.45% | |||||||
| Distribution and Service (12b-1) Fees | 0.15% | |||||||
| Component1 Other Expenses | 0.15% | |||||||
| Component2 Other Expenses | 0.19% | |||||||
| Other Expenses (as a percentage of Assets): | 0.34% | |||||||
| Expenses (as a percentage of Assets) | 0.94% | |||||||
| Fee Waiver or Reimbursement | [1] | |||||||
| Net Expenses (as a percentage of Assets) | 0.94% | |||||||
| Class FI | ||||||||
| Prospectus [Line Items] | ||||||||
| Management Fees (as a percentage of Assets) | 0.45% | |||||||
| Distribution and Service (12b-1) Fees | 0.25% | |||||||
| Component1 Other Expenses | 0.15% | |||||||
| Component2 Other Expenses | 0.31% | [3] | ||||||
| Other Expenses (as a percentage of Assets): | 0.46% | |||||||
| Expenses (as a percentage of Assets) | 1.16% | |||||||
| Fee Waiver or Reimbursement | (0.16%) | [1] | ||||||
| Net Expenses (as a percentage of Assets) | 1.00% | [2] | ||||||
| Class IS | ||||||||
| Prospectus [Line Items] | ||||||||
| Management Fees (as a percentage of Assets) | 0.45% | |||||||
| Distribution and Service (12b-1) Fees | 0.00% | |||||||
| Component1 Other Expenses | 0.15% | |||||||
| Component2 Other Expenses | 0.11% | |||||||
| Other Expenses (as a percentage of Assets): | 0.26% | |||||||
| Expenses (as a percentage of Assets) | 0.71% | |||||||
| Fee Waiver or Reimbursement | (0.04%) | [1] | ||||||
| Net Expenses (as a percentage of Assets) | 0.67% | [2] | ||||||
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