S000006334 [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 |
Dec. 31, 2015 |
|
| TCW Core Fixed Income Fund | I Class | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 0.75% | 5.60% | (14.25%) | (1.27%) | 8.79% | 8.75% | 0.08% | 3.23% | 2.28% | 0.03% |