v3.25.4
S000024274 [Member] Expense Example - Putnam Short Duration Bond Fund
Oct. 31, 2025
USD ($)
Class Y  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 39
Expense Example, with Redemption, 3 Years 123
Expense Example, with Redemption, 5 Years 215
Expense Example, with Redemption, 10 Years 482
Class A  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 288
Expense Example, with Redemption, 3 Years 423
Expense Example, with Redemption, 5 Years 570
Expense Example, with Redemption, 10 Years 995
Class C  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 240
Expense Example, with Redemption, 3 Years 437
Expense Example, with Redemption, 5 Years 755
Expense Example, with Redemption, 10 Years 1,452
Class R  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 90
Expense Example, with Redemption, 3 Years 281
Expense Example, with Redemption, 5 Years 488
Expense Example, with Redemption, 10 Years 1,084
Class R6  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 39
Expense Example, with Redemption, 3 Years 123
Expense Example, with Redemption, 5 Years 215
Expense Example, with Redemption, 10 Years $ 482