DWS Tax-Exempt Portfolio 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 |
|
| DWS Tax Free Mony Fund Cl S [Member] | DWS Tax-Exempt Portfolio | DWS Tax-Free Money Fund Class S | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 3.07% | 3.08% | 1.03% | 0.01% | 0.44% | 1.27% | 1.18% | 0.63% | 0.30% | 0.02% |