DWS Tax-Exempt Portfolio Annual Fund Operating Expenses - Service Shares [Member] - DWS Tax-Exempt Portfolio - Service Shares |
Apr. 30, 2025 |
|---|---|
| Prospectus [Line Items] | |
| Management Fees (as a percentage of Assets) | 0.07% |
| Distribution and Service (12b-1) Fees | 0.60% |
| Other Expenses (as a percentage of Assets): | 0.55% |
| Expenses (as a percentage of Assets) | 1.22% |