v3.25.2
Average Annual Total Returns
 12 Months Ended 60 Months Ended 120 Months Ended
Dec. 31, 2024
Dec. 31, 2024
Dec. 31, 2024
Russell 3000 Index (no deduction for fees, expenses or taxes)      
Prospectus [Line Items]      
Average Annual Return, Percent 23.81% 13.86% 12.55%
Russell Midcap Growth Index (no deduction for fees, expenses or taxes)      
Prospectus [Line Items]      
Average Annual Return, Percent 22.10% 11.47% 11.54%
Putnam Sustainable Future Linked Benchmark (no deduction for fees, expenses or taxes)      
Prospectus [Line Items]      
Average Annual Return, Percent 22.10% 11.47% 10.38%
Class A      
Prospectus [Line Items]      
Average Annual Return, Percent 8.39% 8.27% 7.95%
Class A | After Taxes on Distributions      
Prospectus [Line Items]      
Average Annual Return, Percent 5.70% 6.28% 5.93%
Class A | After Taxes on Distributions and Sales      
Prospectus [Line Items]      
Average Annual Return, Percent 7.16% 6.32% 5.95%
Class C      
Prospectus [Line Items]      
Average Annual Return, Percent 13.12% 8.73% 7.94%
Class R      
Prospectus [Line Items]      
Average Annual Return, Percent 14.69% 9.29% 8.33%
Class Y      
Prospectus [Line Items]      
Average Annual Return, Percent 15.26% 9.83% 8.87%
Class R6      
Prospectus [Line Items]      
Average Annual Return, Percent [1] 15.40% 9.96% 8.96%
[1]
Performance for class R6 shares prior to their inception (5/22/18) is derived from the historical performance of class Y shares and has not been adjusted for the lower investor servicing fees applicable to class R6 shares; had it been adjusted, returns would have been higher.