Class I [Member] Expense Example, No Redemption - Class I - Putnam Government Money Market Fund - Class I Shares |
Sep. 30, 2025
USD ($)
|
|---|---|
| Prospectus [Line Items] | |
| Expense Example, No Redemption, 1 Year | $ 34 |
| Expense Example, No Redemption, 3 Years | 106 |
| Expense Example, No Redemption, 5 Years | 186 |
| Expense Example, No Redemption, 10 Years | $ 418 |