S000001601 [Member] Annual Total Returns |
12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2025 |
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 |
|
| Short Duration Bond Fund | Class S | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 5.92% | 4.67% | 5.05% | (4.95%) | (0.75%) | 4.98% | 4.69% | 1.27% | 1.33% | 2.49% |