S000039730 [Member] Expense Example - Putnam Short Term Investment Fund |
Jul. 31, 2025
USD ($)
|
|---|---|
| Class P | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | $ 3 |
| Expense Example, with Redemption, 3 Years | 65 |
| Expense Example, with Redemption, 5 Years | 133 |
| Expense Example, with Redemption, 10 Years | 333 |
| Class G Shares | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 3 |
| Expense Example, with Redemption, 3 Years | 65 |
| Expense Example, with Redemption, 5 Years | 133 |
| Expense Example, with Redemption, 10 Years | $ 333 |