Shareholder Report, Line Graph (Details) 74200177400_Putnam Global Health Care Fund_Class Y_TSR Annual {Class Y} - USD ($) |
12 Months Ended | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Aug. 31, 2025 |
Aug. 31, 2024 |
Aug. 31, 2023 |
Aug. 31, 2022 |
Aug. 31, 2021 |
Aug. 31, 2020 |
Aug. 31, 2019 |
Aug. 31, 2018 |
Aug. 31, 2017 |
Aug. 31, 2016 |
Aug. 31, 2026 |
|
| Class Y | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Class Y | ||||||||||
| Accumulated Value | $ 21,532 | $ 24,818 | $ 19,498 | $ 17,397 | $ 19,097 | $ 15,433 | $ 12,200 | $ 12,031 | $ 11,056 | $ 10,000 | $ 25,925 |
| MSCI All Country World Index-NR [Member] | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | MSCI All Country World Index-NR | ||||||||||
| Accumulated Value | 26,721 | 23,076 | 18,694 | 16,406 | 19,504 | 15,161 | 13,011 | 13,048 | 11,711 | 10,000 | $ 32,693 |
| MSCI World Health Care Index-NR [Member] | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | MSCI World Health Care Index-NR | ||||||||||
| Accumulated Value | $ 19,858 | $ 22,463 | $ 18,642 | $ 16,933 | $ 19,029 | $ 15,414 | $ 12,596 | $ 12,562 | $ 11,077 | $ 10,000 | $ 23,759 |