S000014682 [Member] Expense Example, No Redemption - Western Asset SMASh Series C Fund - SMASh Series C Fund |
Feb. 28, 2026
USD ($)
|
|---|---|
| Prospectus [Line Items] | |
| Expense Example, No Redemption, 1 Year | $ 0 |
| Expense Example, No Redemption, 3 Years | 13 |
| Expense Example, No Redemption, 5 Years | 27 |
| Expense Example, No Redemption, 10 Years | $ 70 |