v3.25.4
Expense Example, No Redemption - PUTNAM INCOME FUND - Class C
Oct. 31, 2025
USD ($)
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year $ 152
Expense Example, No Redemption, 3 Years 492
Expense Example, No Redemption, 5 Years 856
Expense Example, No Redemption, 10 Years $ 1,679