Shareholder Report, Line Graph (Details) 74200180200_Putnam Global Technology 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 | $ 59,823 | $ 50,979 | $ 37,444 | $ 28,969 | $ 40,983 | $ 30,059 | $ 18,540 | $ 17,659 | $ 14,010 | $ 10,000 | $ 87,436 |
| 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 |
| Putnam Global Technology Linked Benchmark [Member] | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Putnam Global Technology Linked Benchmark | ||||||||||
| Accumulated Value | 59,573 | 49,204 | 36,150 | 28,388 | 35,702 | 27,230 | 17,632 | 16,880 | 12,977 | 10,000 | $ 85,758 |
| MSCI ACWI Information Technology Index-NR [Member] | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | MSCI ACWI Information Technology Index-NR | ||||||||||
| Accumulated Value | $ 57,826 | $ 47,761 | $ 35,090 | $ 27,555 | $ 34,894 | $ 26,211 | $ 17,089 | $ 16,539 | $ 13,199 | $ 10,000 | $ 83,243 |