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Shareholder Report
 12 Months Ended 45 Months Ended
Aug. 31, 2024
USD ($)
Holding
Aug. 31, 2024
USD ($)
Holding
Shareholder Report [Line Items]    
Document Type N-CSR  
Amendment Flag false  
Registrant Name DEUTSCHE DWS STATE TAX-FREE INCOME SERIES  
Entity Central Index Key 0000714287  
Entity Investment Company Type N-1A  
Document Period End Date Aug. 31, 2024  
C000016818    
Shareholder Report [Line Items]    
Fund Name DWS New York Tax-Free Income Fund  
Class Name Class A  
Trading Symbol KNTAX  
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about DWS New York Tax-Free Income Fund ("the Fund") for the period September 1, 2023 to August 31, 2024.  
Shareholder Report Annual or Semi-Annual 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;">dws.com/mutualreports</span>  
Expenses [Text Block]

What were the Fund costs for the last year?

(Based on a hypothetical $10,000 investment)
Cost of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class A
$83
0.80%

Gross expense ratio as of the latest prospectus: 0.91%. See prospectus for any contractual or voluntary waivers; without a waiver, costs would have been higher.

 
Expenses Paid, Amount $ 83  
Expense Ratio, Percent 0.80%  
Performance Past Does Not Indicate Future [Text] The Fund's past performance is not a good predictor or guarantee of the Fund's future performance.  
Average Annual Return [Table Text Block]
Class/Index
1-Year
5-Year
10-Year
Class A Unadjusted for Sales Charge
7.25%
0.72%
2.04%
Class A Adjusted for the Maximum Sales Charge (max 2.75% load)
4.30%
0.16%
1.76%
Bloomberg Municipal Bond Index
6.09%
1.02%
2.43%
Bloomberg New York Exempt Municipal Bond Index
6.32%
0.98%
2.33%
 
No Deduction of Taxes [Text Block] The performance graph and returns table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or the redemption of Fund shares.  
AssetsNet $ 201,912,970 $ 201,912,970
Holdings Count | Holding 158 158
Advisory Fees Paid, Amount $ 631,140  
InvestmentCompanyPortfolioTurnover 46.00%  
Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets ($)
201,912,970
Number of Portfolio Holdings
158
Portfolio Turnover Rate (%)
46
Total Net Advisory Fees Paid ($)
631,140
Modified Duration to Worst
7.2 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%
Lease Obligations
8%
General Obligation Bonds
7%
Other
3%
Variable Rate Demand Notes
3%
Excrow To Maturity/prefunded Bonds
0%
Other Assets and Liabilities, Net
(1%)
Total
100%
 
Material Fund Change [Text Block]
 
C000016820    
Shareholder Report [Line Items]    
Fund Name DWS New York Tax-Free Income Fund  
Class Name Class C  
Trading Symbol KNTCX  
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about DWS New York Tax-Free Income Fund ("the Fund") for the period September 1, 2023 to August 31, 2024.  
Shareholder Report Annual or Semi-Annual 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;">dws.com/mutualreports</span>  
Expenses [Text Block]

What were the Fund costs for the last year?

(Based on a hypothetical $10,000 investment)
Cost of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class C
$159
1.54%

Gross expense ratio as of the latest prospectus: 1.72%. See prospectus for any contractual or voluntary waivers; without a waiver, costs would have been higher.

 
Expenses Paid, Amount $ 159  
Expense Ratio, Percent 1.54%  
Performance Past Does Not Indicate Future [Text] The Fund's past performance is not a good predictor or guarantee of the Fund's future performance.  
Average Annual Return [Table Text Block]
Class/Index
1-Year
5-Year
10-Year
Class C Unadjusted for Sales Charge
6.42%
-0.02%
1.28%
Class C Adjusted for the Maximum Sales Charge (max 1.00% CDSC)
5.42%
-0.02%
1.28%
Bloomberg Municipal Bond Index
6.09%
1.02%
2.43%
Bloomberg New York Exempt Municipal Bond Index
6.32%
0.98%
2.33%
 
No Deduction of Taxes [Text Block] The performance graph and returns table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or the redemption of Fund shares.  
AssetsNet $ 201,912,970 $ 201,912,970
Holdings Count | Holding 158 158
Advisory Fees Paid, Amount $ 631,140  
InvestmentCompanyPortfolioTurnover 46.00%  
Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets ($)
201,912,970
Number of Portfolio Holdings
158
Portfolio Turnover Rate (%)
46
Total Net Advisory Fees Paid ($)
631,140
Modified Duration to Worst
7.2 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%
Lease Obligations
8%
General Obligation Bonds
7%
Other
3%
Variable Rate Demand Notes
3%
Excrow To Maturity/prefunded Bonds
0%
Other Assets and Liabilities, Net
(1%)
Total
100%
 
Material Fund Change [Text Block]
 
C000016821    
Shareholder Report [Line Items]    
Fund Name DWS New York Tax-Free Income Fund  
Class Name Class S  
Trading Symbol SNWYX  
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about DWS New York Tax-Free Income Fund ("the Fund") for the period September 1, 2023 to August 31, 2024.  
Shareholder Report Annual or Semi-Annual 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;">dws.com/mutualreports</span>  
Expenses [Text Block]

What were the Fund costs for the last year?

(Based on a hypothetical $10,000 investment)
Cost of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Class S
$57
0.55%

Gross expense ratio as of the latest prospectus: 0.70%. See prospectus for any contractual or voluntary waivers; without a waiver, costs would have been higher.

 
Expenses Paid, Amount $ 57  
Expense Ratio, Percent 0.55%  
Performance Past Does Not Indicate Future [Text] The Fund's past performance is not a good predictor or guarantee of the Fund's future performance.  
Average Annual Return [Table Text Block]
Class/Index
1-Year
5-Year
10-Year
Class S No Sales Charge
7.54%
0.97%
2.30%
Bloomberg Municipal Bond Index
6.09%
1.02%
2.43%
Bloomberg New York Exempt Municipal Bond Index
6.32%
0.98%
2.33%
 
No Deduction of Taxes [Text Block] The performance graph and returns table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or the redemption of Fund shares.  
AssetsNet $ 201,912,970 $ 201,912,970
Holdings Count | Holding 158 158
Advisory Fees Paid, Amount $ 631,140  
InvestmentCompanyPortfolioTurnover 46.00%  
Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets ($)
201,912,970
Number of Portfolio Holdings
158
Portfolio Turnover Rate (%)
46
Total Net Advisory Fees Paid ($)
631,140
Modified Duration to Worst
7.2 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%
Lease Obligations
8%
General Obligation Bonds
7%
Other
3%
Variable Rate Demand Notes
3%
Excrow To Maturity/prefunded Bonds
0%
Other Assets and Liabilities, Net
(1%)
Total
100%
 
Material Fund Change [Text Block]
 
C000223771    
Shareholder Report [Line Items]    
Fund Name DWS New York Tax-Free Income Fund  
Class Name Institutional Class  
Trading Symbol DNTIX  
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about DWS New York Tax-Free Income Fund ("the Fund") for the period September 1, 2023 to August 31, 2024.  
Shareholder Report Annual or Semi-Annual 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;">dws.com/mutualreports</span>  
Expenses [Text Block]

What were the Fund costs for the last year?

(Based on a hypothetical $10,000 investment)
Cost of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Institutional Class
$57
0.55%

Gross expense ratio as of the latest prospectus: 0.68%. See prospectus for any contractual or voluntary waivers; without a waiver, costs would have been higher.

 
Expenses Paid, Amount $ 57  
Expense Ratio, Percent 0.55%  
Performance Past Does Not Indicate Future [Text] The Fund's past performance is not a good predictor or guarantee of the Fund's future performance.  
Average Annual Return [Table Text Block]
Class/Index
1-Year
Since Inception 12/1/20
Institutional Class No Sales Charge
7.54%
0.43%
Bloomberg Municipal Bond Index
6.09%
0.19%
Bloomberg New York Exempt Municipal Bond Index
6.32%
0.37%
 
Performance Inception Date   Dec. 01, 2020
No Deduction of Taxes [Text Block] The performance graph and returns table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or the redemption of Fund shares.  
AssetsNet $ 201,912,970 $ 201,912,970
Holdings Count | Holding 158 158
Advisory Fees Paid, Amount $ 631,140  
InvestmentCompanyPortfolioTurnover 46.00%  
Additional Fund Statistics [Text Block]

Key Fund Statistics

Net Assets ($)
201,912,970
Number of Portfolio Holdings
158
Portfolio Turnover Rate (%)
46
Total Net Advisory Fees Paid ($)
631,140
Modified Duration to Worst
7.2 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%
Lease Obligations
8%
General Obligation Bonds
7%
Other
3%
Variable Rate Demand Notes
3%
Excrow To Maturity/prefunded Bonds
0%
Other Assets and Liabilities, Net
(1%)
Total
100%
 
Material Fund Change [Text Block]