Investment Objectives and Goals - Classes ACS [Member] - DWS Massachusetts Tax-Free Fund |
Mar. 31, 2025 |
|---|---|
| Prospectus [Line Items] | |
| Risk/Return [Heading] | <span style="color:#000000;font-family:Arial;font-size:14pt;">DWS Massachusetts Tax-Free Fund</span> |
| Objective [Heading] | <span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;text-transform:uppercase;">Investment Objective</span> |
| Objective, Primary [Text Block] | The fund seeks income that is exempt from Massachusetts personal and federal income taxes. |