Shareholder Report, Average Annual Return (Details) 74200171800_George Putnam Balanced Fund_Class M_TSR Annual {Class M}

12 Months Ended

60 Months Ended

120 Months Ended

Jul. 31, 2026

Jul. 31, 2026

Jul. 31, 2026

Class M

Average Annual Return [Line Items]

Line Graph and Table Measure Name

Class M (with sales charge)

Average Annual Return, Percent

10.41%

7.01%

9.37%

Without Sales Load [Member] | Class M

Average Annual Return [Line Items]

Line Graph and Table Measure Name

Class M

Average Annual Return, Percent

14.41%

7.77%

9.76%

Russell 3000 Index [Member]

Average Annual Return [Line Items]

Line Graph and Table Measure Name

Russell 3000 Index

Average Annual Return, Percent

19.60%

11.82%

14.56%

George Putnam Blended Index [Member]

Average Annual Return [Line Items]

Line Graph and Table Measure Name

George Putnam Blended Index

Average Annual Return, Percent

^[1]

12.72%

7.73%

9.83%

Bloomberg U.S. Aggregate Index [Member]

Average Annual Return [Line Items]

Line Graph and Table Measure Name

Bloomberg U.S. Aggregate Index

Average Annual Return, Percent

2.71%

(0.40%)

1.35%

[1]

†	The George Putnam Blended Index is comprised of 60% S&P 500 Index and 40% Bloomberg U.S. Aggregate Index.