v3.25.4
Expense Example - PUTNAM INCOME FUND
Oct. 31, 2025
USD ($)
Class A  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 472
Expense Example, with Redemption, 3 Years 647
Expense Example, with Redemption, 5 Years 837
Expense Example, with Redemption, 10 Years 1,386
Class C  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 252
Expense Example, with Redemption, 3 Years 492
Expense Example, with Redemption, 5 Years 856
Expense Example, with Redemption, 10 Years 1,679
Class M  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 422
Expense Example, with Redemption, 3 Years 650
Expense Example, with Redemption, 5 Years 896
Expense Example, with Redemption, 10 Years 1,600
Class R  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 101
Expense Example, with Redemption, 3 Years 337
Expense Example, with Redemption, 5 Years 592
Expense Example, with Redemption, 10 Years 1,320
Class Y Shares  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 49
Expense Example, with Redemption, 3 Years 178
Expense Example, with Redemption, 5 Years 319
Expense Example, with Redemption, 10 Years 728
Class R5  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 46
Expense Example, with Redemption, 3 Years 169
Expense Example, with Redemption, 5 Years 302
Expense Example, with Redemption, 10 Years 691
Class R6  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 39
Expense Example, with Redemption, 3 Years 146
Expense Example, with Redemption, 5 Years 263
Expense Example, with Redemption, 10 Years $ 605