v3.25.2
Expense Example - Classes ACS [Member] - DWS Massachusetts Tax-Free Fund
Mar. 31, 2025
USD ($)
Class A  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 361
Expense Example, with Redemption, 3 Years 564
Expense Example, with Redemption, 5 Years 783
Expense Example, with Redemption, 10 Years 1,413
Class C  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 265
Expense Example, with Redemption, 3 Years 543
Expense Example, with Redemption, 5 Years 945
Expense Example, with Redemption, 10 Years 1,858
INST Class  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 63
Expense Example, with Redemption, 3 Years 227
Expense Example, with Redemption, 5 Years 404
Expense Example, with Redemption, 10 Years 918
Class S  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 63
Expense Example, with Redemption, 3 Years 231
Expense Example, with Redemption, 5 Years 413
Expense Example, with Redemption, 10 Years $ 940