v3.25.4
S000024274 [Member] Expense Example, No Redemption - Putnam Short Duration Bond Fund - Class C
Oct. 31, 2025
USD ($)
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year $ 140
Expense Example, No Redemption, 3 Years 437
Expense Example, No Redemption, 5 Years 755
Expense Example, No Redemption, 10 Years $ 1,452