This semi-annual shareholder report contains important information about DWS Massachusetts Tax-Free Fund (the "Fund") for the period April 1, 2025 to September 30, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund on the Fund's website at dws.com/mutualreports. You can also request this information by contacting us at (800) 728-3337.

Additional Information Phone Number

(800) 728-3337

Additional Information Website

<span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 14.6667px; font-weight: 300; grid-area: auto; line-height: 17.6px; margin: 0px; overflow: visible; text-align: left; text-align-last: auto; white-space-collapse: preserve-breaks;">dws.com/mutualreports</span>

Expenses [Text Block]

What were the Fund costs for the last six months?

(Based on a hypothetical $10,000 investment)

Fund	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class A	$43	0.85%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized.

Gross expense ratio as of the latest prospectus: 0.96%. See prospectus for any contractual or voluntary waivers; without a waiver, costs would have been higher.

Expenses Paid, Amount

$ 43

Expense Ratio, Percent

0.85%

^[1]

AssetsNet

$ 192,453,711

Holdings Count | Holding

118

Advisory Fees Paid, Amount

$ 372,930

InvestmentCompanyPortfolioTurnover

20.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets ($)	192,453,711
Number of Portfolio Holdings	118
Portfolio Turnover Rate (%)	20
Total Net Advisory Fees Paid ($)	372,930
Modified Duration to Worst	6.5 years

Modified duration to worst is the measure of sensitivity of the prices of bonds held by the Fund to a change in interest rates, computed using each bond's nearest call or maturity date.

Holdings [Text Block]

Asset Allocation

Asset Type	% of Net Assets
Revenue Bonds	80%
General Obligation Bonds	16%
Lease Obligations	2%
Variable Rate Demand Notes	1%
Escrow to Maturity/Prerefunded Bonds	1%
Other Assets and Liabilities, Net	0%
Total	100%

Credit Quality

Credit Rating	% of Net Assets
AAA	13%
AA	51%
A	20%
BBB	7%
BB	3%
Not Rated	5%

Credit Ratings Selection [Text Block]

The quality ratings represent the highest of Moody’s Investors Service, Inc. (“Moody’s”), Fitch Ratings, Inc. (“Fitch”) or S&P Global Ratings (“S&P”) credit ratings. The ratings of Moody’s, Fitch and S&P represent their opinions as to the quality of the securities they rate. Credit quality measures a bond issuer’s ability to repay interest and principal in a timely manner. Ratings are relative and subjective and are not absolute standards of quality. Credit quality does not remove market risk and is subject to change.

C000102801

Shareholder Report [Line Items]

Fund Name

DWS Massachusetts Tax-Free Fund

Class Name

Class C

Trading Symbol

SQMCX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about DWS Massachusetts Tax-Free Fund (the "Fund") for the period April 1, 2025 to September 30, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund on the Fund's website at dws.com/mutualreports. You can also request this information by contacting us at (800) 728-3337.

Additional Information Phone Number

(800) 728-3337

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(Based on a hypothetical $10,000 investment)

Fund	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class C	$81	1.60%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized.

Gross expense ratio as of the latest prospectus: 1.77%. See prospectus for any contractual or voluntary waivers; without a waiver, costs would have been higher.

Expenses Paid, Amount

$ 81

Expense Ratio, Percent

1.60%

^[2]

AssetsNet

$ 192,453,711

Holdings Count | Holding

118

Advisory Fees Paid, Amount

$ 372,930

InvestmentCompanyPortfolioTurnover

20.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets ($)	192,453,711
Number of Portfolio Holdings	118
Portfolio Turnover Rate (%)	20
Total Net Advisory Fees Paid ($)	372,930
Modified Duration to Worst	6.5 years

Modified duration to worst is the measure of sensitivity of the prices of bonds held by the Fund to a change in interest rates, computed using each bond's nearest call or maturity date.

Holdings [Text Block]

Asset Allocation

Asset Type	% of Net Assets
Revenue Bonds	80%
General Obligation Bonds	16%
Lease Obligations	2%
Variable Rate Demand Notes	1%
Escrow to Maturity/Prerefunded Bonds	1%
Other Assets and Liabilities, Net	0%
Total	100%

Credit Quality

Credit Rating	% of Net Assets
AAA	13%
AA	51%
A	20%
BBB	7%
BB	3%
Not Rated	5%

Credit Ratings Selection [Text Block]

C000102802

Shareholder Report [Line Items]

Fund Name

DWS Massachusetts Tax-Free Fund

Class Name

Class S

Trading Symbol

SCMAX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about DWS Massachusetts Tax-Free Fund (the "Fund") for the period April 1, 2025 to September 30, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund on the Fund's website at dws.com/mutualreports. You can also request this information by contacting us at (800) 728-3337.

Additional Information Phone Number

(800) 728-3337

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(Based on a hypothetical $10,000 investment)

Fund	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Class S	$30	0.60%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized.

Gross expense ratio as of the latest prospectus: 0.77%. See prospectus for any contractual or voluntary waivers; without a waiver, costs would have been higher.

Expenses Paid, Amount

$ 30

Expense Ratio, Percent

0.60%

^[3]

AssetsNet

$ 192,453,711

Holdings Count | Holding

118

Advisory Fees Paid, Amount

$ 372,930

InvestmentCompanyPortfolioTurnover

20.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets ($)	192,453,711
Number of Portfolio Holdings	118
Portfolio Turnover Rate (%)	20
Total Net Advisory Fees Paid ($)	372,930
Modified Duration to Worst	6.5 years

Modified duration to worst is the measure of sensitivity of the prices of bonds held by the Fund to a change in interest rates, computed using each bond's nearest call or maturity date.

Holdings [Text Block]

Asset Allocation

Asset Type	% of Net Assets
Revenue Bonds	80%
General Obligation Bonds	16%
Lease Obligations	2%
Variable Rate Demand Notes	1%
Escrow to Maturity/Prerefunded Bonds	1%
Other Assets and Liabilities, Net	0%
Total	100%

Credit Quality

Credit Rating	% of Net Assets
AAA	13%
AA	51%
A	20%
BBB	7%
BB	3%
Not Rated	5%

Credit Ratings Selection [Text Block]

C000223772

Shareholder Report [Line Items]

Fund Name

DWS Massachusetts Tax-Free Fund

Class Name

Institutional Class

Trading Symbol

DMAIX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about DWS Massachusetts Tax-Free Fund (the "Fund") for the period April 1, 2025 to September 30, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund on the Fund's website at dws.com/mutualreports. You can also request this information by contacting us at (800) 728-3337.

Additional Information Phone Number

(800) 728-3337

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(Based on a hypothetical $10,000 investment)

Fund	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Institutional Class	$30	0.60%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized.

Gross expense ratio as of the latest prospectus: 0.75%. See prospectus for any contractual or voluntary waivers; without a waiver, costs would have been higher.

Expenses Paid, Amount

$ 30

Expense Ratio, Percent

0.60%

^[4]

AssetsNet

$ 192,453,711

Holdings Count | Holding

118

Advisory Fees Paid, Amount

$ 372,930

InvestmentCompanyPortfolioTurnover

20.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets ($)	192,453,711
Number of Portfolio Holdings	118
Portfolio Turnover Rate (%)	20
Total Net Advisory Fees Paid ($)	372,930
Modified Duration to Worst	6.5 years

Modified duration to worst is the measure of sensitivity of the prices of bonds held by the Fund to a change in interest rates, computed using each bond's nearest call or maturity date.

Holdings [Text Block]

Asset Allocation

Asset Type	% of Net Assets
Revenue Bonds	80%
General Obligation Bonds	16%
Lease Obligations	2%
Variable Rate Demand Notes	1%
Escrow to Maturity/Prerefunded Bonds	1%
Other Assets and Liabilities, Net	0%
Total	100%

Credit Quality

Credit Rating	% of Net Assets
AAA	13%
AA	51%
A	20%
BBB	7%
BB	3%
Not Rated	5%

Credit Ratings Selection [Text Block]

[1]	Annualized.
[2]	Annualized.
[3]	Annualized.
[4]	Annualized.