v3.25.3
Expense Example - GEORGE PUTNAM FUND OF BOSTON
Jul. 31, 2025
USD ($)
Class A Shares  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 663
Expense Example, with Redemption, 3 Years 849
Expense Example, with Redemption, 5 Years 1,051
Expense Example, with Redemption, 10 Years 1,632
Class C Shares  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 269
Expense Example, with Redemption, 3 Years 523
Expense Example, with Redemption, 5 Years 901
Expense Example, with Redemption, 10 Years 1,765
Class M Shares  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 489
Expense Example, with Redemption, 3 Years 781
Expense Example, with Redemption, 5 Years 1,094
Expense Example, with Redemption, 10 Years 1,981
Class R Shares  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 118
Expense Example, with Redemption, 3 Years 368
Expense Example, with Redemption, 5 Years 637
Expense Example, with Redemption, 10 Years 1,408
Class Y Shares  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 67
Expense Example, with Redemption, 3 Years 210
Expense Example, with Redemption, 5 Years 367
Expense Example, with Redemption, 10 Years 822
Class R5  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 70
Expense Example, with Redemption, 3 Years 221
Expense Example, with Redemption, 5 Years 384
Expense Example, with Redemption, 10 Years 859
Class R6  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 61
Expense Example, with Redemption, 3 Years 192
Expense Example, with Redemption, 5 Years 335
Expense Example, with Redemption, 10 Years $ 750