S000052179 [Member] Expense Example, No Redemption - Western Asset SMASh Series TF Fund - Western Asset SMASh Series TF Fund |
Feb. 28, 2026
USD ($)
|
|---|---|
| Prospectus [Line Items] | |
| Expense Example, No Redemption, 1 Year | $ 4 |
| Expense Example, No Redemption, 3 Years | 48 |
| Expense Example, No Redemption, 5 Years | 97 |
| Expense Example, No Redemption, 10 Years | $ 239 |