Shareholder Report, Average Annual Return (Details) 74200177400_Putnam Global Health Care Fund_Class A_TSR Annual {Class A} |
12 Months Ended | 60 Months Ended | 120 Months Ended |
|---|---|---|---|
Aug. 31, 2026 |
Aug. 31, 2026 |
Aug. 31, 2026 |
|
| Class A | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Class A (with sales charge) | ||
| Average Annual Return, Percent | 13.20% | 4.78% | 9.07% |
| Without Sales Load [Member] | Class A | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Class A | ||
| Average Annual Return, Percent | 20.10% | 6.03% | 9.72% |
| 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% |