S000003853 [Member] Expense Example, No Redemption - Putnam U.S. Research Fund - Class C Shares |
Jul. 31, 2025
USD ($)
|
|---|---|
| Prospectus [Line Items] | |
| Expense Example, No Redemption, 1 Year | $ 166 |
| Expense Example, No Redemption, 3 Years | 536 |
| Expense Example, No Redemption, 5 Years | 930 |
| Expense Example, No Redemption, 10 Years | $ 1,834 |