Prospectus 1 [Member] Annual Total Returns |
12 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|
| Prospectus 1 | Putnam Mortgage Opportunities Fund | Class A | |||||||||
| Prospectus [Line Items] | |||||||||
| Annual Return [Percent] | 10.27% | 6.73% | 6.43% | (1.83%) | (6.52%) | 9.97% | 2.74% | 5.66% | 4.19% |