Class A C F I I And Class I S [Member] Annual Fund Operating Expenses - Class A, C, FI, I and Class IS - Western Asset Short Duration Municipal Income Fund |
Feb. 28, 2025 |
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Prospectus [Line Items] | ||||||
Fee Waiver or Reimbursement over Assets, Date of Termination | December 31, 2026 | |||||
Class A | ||||||
Prospectus [Line Items] | ||||||
Management Fees (as a percentage of Assets) | 0.30% | |||||
Distribution and Service (12b-1) Fees | 0.15% | |||||
Other Expenses (as a percentage of Assets): | 0.15% | |||||
Expenses (as a percentage of Assets) | 0.60% | |||||
Fee Waiver or Reimbursement | (0.05%) | [1] | ||||
Net Expenses (as a percentage of Assets) | 0.55% | |||||
Class C | ||||||
Prospectus [Line Items] | ||||||
Management Fees (as a percentage of Assets) | 0.30% | |||||
Distribution and Service (12b-1) Fees | 0.50% | |||||
Other Expenses (as a percentage of Assets): | 0.15% | |||||
Expenses (as a percentage of Assets) | 0.95% | |||||
Fee Waiver or Reimbursement | [1] | |||||
Net Expenses (as a percentage of Assets) | 0.95% | |||||
Class FI | ||||||
Prospectus [Line Items] | ||||||
Management Fees (as a percentage of Assets) | 0.30% | |||||
Distribution and Service (12b-1) Fees | 0.25% | |||||
Other Expenses (as a percentage of Assets): | 0.28% | [2] | ||||
Expenses (as a percentage of Assets) | 0.83% | |||||
Fee Waiver or Reimbursement | (0.08%) | [1] | ||||
Net Expenses (as a percentage of Assets) | 0.75% | |||||
Class I | ||||||
Prospectus [Line Items] | ||||||
Management Fees (as a percentage of Assets) | 0.30% | |||||
Distribution and Service (12b-1) Fees | 0.00% | |||||
Other Expenses (as a percentage of Assets): | 0.17% | |||||
Expenses (as a percentage of Assets) | 0.47% | |||||
Fee Waiver or Reimbursement | (0.07%) | [1] | ||||
Net Expenses (as a percentage of Assets) | 0.40% | |||||
Class IS | ||||||
Prospectus [Line Items] | ||||||
Management Fees (as a percentage of Assets) | 0.30% | |||||
Distribution and Service (12b-1) Fees | 0.00% | |||||
Other Expenses (as a percentage of Assets): | 0.09% | |||||
Expenses (as a percentage of Assets) | 0.39% | |||||
Fee Waiver or Reimbursement | (0.04%) | [1] | ||||
Net Expenses (as a percentage of Assets) | 0.35% | |||||
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