Shareholder Report, Average Annual Return (Details) 74200177400_Putnam Global Health Care Fund_Class C_TSR Annual {Class C} |
12 Months Ended | 60 Months Ended | 120 Months Ended |
|---|---|---|---|
Aug. 31, 2026 |
Aug. 31, 2026 |
Aug. 31, 2026 |
|
| Class C | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Class C (with sales charge) | ||
| Average Annual Return, Percent | 18.20% | 5.24% | 9.06% |
| Without Sales Load [Member] | Class C | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Class C | ||
| Average Annual Return, Percent | 19.20% | 5.24% | 9.06% |
| MSCI All Country World Index-NR [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | MSCI All Country World Index-NR | ||
| Average Annual Return, Percent | 22.35% | 10.88% | 12.58% |
| MSCI World Health Care Index-NR [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | MSCI World Health Care Index-NR | ||
| Average Annual Return, Percent | 19.65% | 4.54% | 9.04% |