v3.26.1
Shareholder Report, Line Graph (Details) - USD ($)
 1 Months Ended 2 Months Ended 3 Months Ended 4 Months Ended 5 Months Ended 6 Months Ended 7 Months Ended 8 Months Ended 9 Months Ended 10 Months Ended 11 Months Ended 12 Months Ended 13 Months Ended 14 Months Ended 15 Months Ended 16 Months Ended 17 Months Ended 18 Months Ended 19 Months Ended 20 Months Ended 21 Months Ended 22 Months Ended 23 Months Ended 24 Months Ended 25 Months Ended 26 Months Ended 27 Months Ended 28 Months Ended 29 Months Ended 30 Months Ended 31 Months Ended 32 Months Ended 33 Months Ended 34 Months Ended 35 Months Ended 36 Months Ended 37 Months Ended 38 Months Ended 39 Months Ended 40 Months Ended 41 Months Ended 42 Months Ended 43 Months Ended 44 Months Ended 45 Months Ended 46 Months Ended 47 Months Ended 48 Months Ended 49 Months Ended 50 Months Ended 51 Months Ended 52 Months Ended 53 Months Ended 54 Months Ended 55 Months Ended 56 Months Ended 57 Months Ended 58 Months Ended 59 Months Ended 60 Months Ended 61 Months Ended 62 Months Ended 63 Months Ended 64 Months Ended 65 Months Ended 66 Months Ended 67 Months Ended 68 Months Ended 69 Months Ended 70 Months Ended 71 Months Ended 72 Months Ended 73 Months Ended 74 Months Ended 75 Months Ended 76 Months Ended 77 Months Ended 78 Months Ended 79 Months Ended 80 Months Ended 81 Months Ended 82 Months Ended 83 Months Ended 84 Months Ended 85 Months Ended 86 Months Ended 87 Months Ended 88 Months Ended 89 Months Ended 90 Months Ended 91 Months Ended 92 Months Ended 93 Months Ended 94 Months Ended 95 Months Ended 96 Months Ended 97 Months Ended 98 Months Ended 99 Months Ended 100 Months Ended 101 Months Ended 102 Months Ended 103 Months Ended 104 Months Ended 105 Months Ended 106 Months Ended 107 Months Ended 108 Months Ended 109 Months Ended 110 Months Ended 111 Months Ended 112 Months Ended 113 Months Ended 114 Months Ended 115 Months Ended 116 Months Ended 117 Months Ended 118 Months Ended 119 Months Ended 120 Months Ended
May 31, 2016
Jun. 30, 2016
Jul. 31, 2016
Aug. 31, 2016
Sep. 30, 2016
Oct. 31, 2016
Nov. 30, 2016
Dec. 31, 2016
Jan. 31, 2017
Feb. 28, 2017
Mar. 31, 2017
Apr. 30, 2017
May 31, 2026
May 31, 2017
Jun. 30, 2017
Jul. 31, 2017
Aug. 31, 2017
Sep. 30, 2017
Oct. 31, 2017
Nov. 30, 2017
Dec. 31, 2017
Jan. 31, 2018
Feb. 28, 2018
Mar. 31, 2018
Apr. 30, 2018
May 31, 2018
Jun. 30, 2018
Jul. 31, 2018
Aug. 31, 2018
Sep. 30, 2018
Oct. 31, 2018
Nov. 30, 2018
Dec. 31, 2018
Jan. 31, 2019
Feb. 28, 2019
Mar. 31, 2019
Apr. 30, 2019
May 31, 2019
Jun. 30, 2019
Jul. 31, 2019
Aug. 31, 2019
Sep. 30, 2019
Oct. 31, 2019
Nov. 30, 2019
Dec. 31, 2019
Jan. 31, 2020
Feb. 29, 2020
Mar. 31, 2020
Apr. 30, 2020
May 31, 2020
Jun. 30, 2020
Jul. 31, 2020
Aug. 31, 2020
Sep. 30, 2020
Oct. 31, 2020
Nov. 30, 2020
Dec. 31, 2020
Jan. 31, 2021
Feb. 28, 2021
Mar. 31, 2021
Apr. 30, 2021
May 31, 2021
Jun. 30, 2021
Jul. 31, 2021
Aug. 31, 2021
Sep. 30, 2021
Oct. 31, 2021
Nov. 30, 2021
Dec. 31, 2021
Jan. 31, 2022
Feb. 28, 2022
Mar. 31, 2022
Apr. 30, 2022
May 31, 2022
Jun. 30, 2022
Jul. 31, 2022
Aug. 31, 2022
Sep. 30, 2022
Oct. 31, 2022
Nov. 30, 2022
Dec. 31, 2022
Jan. 31, 2023
Feb. 28, 2023
Mar. 31, 2023
Apr. 30, 2023
May 31, 2023
Jun. 30, 2023
Jul. 31, 2023
Aug. 31, 2023
Sep. 30, 2023
Oct. 31, 2023
Nov. 30, 2023
Dec. 31, 2023
Jan. 31, 2024
Feb. 29, 2024
Mar. 31, 2024
Apr. 30, 2024
May 31, 2024
Jun. 30, 2024
Jul. 31, 2024
Aug. 31, 2024
Sep. 30, 2024
Oct. 31, 2024
Nov. 30, 2024
Dec. 31, 2024
Jan. 31, 2025
Feb. 28, 2025
Mar. 31, 2025
Apr. 30, 2025
May 31, 2025
Jun. 30, 2025
Jul. 31, 2025
Aug. 31, 2025
Sep. 30, 2025
Oct. 31, 2025
Nov. 30, 2025
Dec. 31, 2025
Jan. 31, 2026
Feb. 28, 2026
Mar. 31, 2026
Apr. 30, 2026
May 31, 2026
C000016740                                                                                                                                                                                                                                                    
Account Value [Line Items]                                                                                                                                                                                                                                                    
Accumulated Value $ 9,725 $ 9,888 $ 9,884 $ 9,891 $ 9,836 $ 9,727 $ 9,366 $ 9,471 $ 9,508 $ 9,577 $ 9,582 $ 9,651   $ 9,795 $ 9,778 $ 9,846 $ 9,914 $ 9,885 $ 9,899 $ 9,869 $ 9,974 $ 9,846 $ 9,795 $ 9,831 $ 9,791 $ 9,893 $ 9,896 $ 9,910 $ 9,924 $ 9,861 $ 9,764 $ 9,869 $ 9,963 $ 10,035 $ 10,096 $ 10,269 $ 10,319 $ 10,471 $ 10,510 $ 10,583 $ 10,769 $ 10,682 $ 10,685 $ 10,700 $ 10,734 $ 10,934 $ 11,111 $ 10,462 $ 10,220 $ 10,539 $ 10,741 $ 10,931 $ 10,898 $ 10,865 $ 10,842 $ 11,057 $ 11,169 $ 11,265 $ 11,053 $ 11,126 $ 11,247 $ 11,331 $ 11,380 $ 11,477 $ 11,416 $ 11,306 $ 11,294 $ 11,404 $ 11,430 $ 11,096 $ 11,009 $ 10,637 $ 10,264 $ 10,364 $ 10,128 $ 10,429 $ 10,166 $ 9,715 $ 9,552 $ 10,087 $ 10,046 $ 10,417 $ 10,139 $ 10,346 $ 10,361 $ 10,273 $ 10,392 $ 10,433 $ 10,280 $ 9,984 $ 9,817 $ 10,477 $ 10,786 $ 10,777 $ 10,796 $ 10,826 $ 10,685 $ 10,703 $ 10,895 $ 10,994 $ 11,067 $ 11,208 $ 11,038 $ 11,247 $ 11,062 $ 11,069 $ 11,187 $ 10,989 $ 10,874 $ 10,814 $ 10,891 $ 10,800 $ 10,878 $ 11,195 $ 11,330 $ 11,367 $ 11,347 $ 11,412 $ 11,578 $ 11,344 $ 11,469 $ 11,550
C000016743                                                                                                                                                                                                                                                    
Account Value [Line Items]                                                                                                                                                                                                                                                    
Accumulated Value 10,000 10,161 10,140 10,151 10,087 9,969 9,593 9,694 9,725 9,779 9,789 9,853   9,992 9,969 10,032 10,094 10,058 10,065 10,029 10,128 9,992 9,934 9,964 9,916 10,013 10,010 10,018 10,025 9,955 9,851 9,938 10,038 10,103 10,159 10,327 10,370 10,516 10,548 10,613 10,793 10,698 10,695 10,703 10,729 10,921 11,092 10,437 10,189 10,500 10,695 10,877 10,836 10,796 10,766 10,973 11,077 11,165 10,947 11,012 11,125 11,201 11,242 11,330 11,262 11,147 11,127 11,228 11,247 10,911 10,819 10,446 10,074 10,166 9,915 10,217 9,953 9,504 9,340 9,856 9,798 10,166 9,889 10,084 10,093 10,000 10,110 10,143 9,988 9,693 9,526 10,160 10,453 10,438 10,449 10,460 10,329 10,340 10,520 10,609 10,672 10,801 10,630 10,824 10,627 10,640 10,747 10,536 10,432 10,367 10,434 10,341 10,409 10,706 10,827 10,856 10,830 10,885 11,037 10,807 10,919 10,989
C000016744                                                                                                                                                                                                                                                    
Account Value [Line Items]                                                                                                                                                                                                                                                    
Accumulated Value 10,000 10,169 10,156 10,176 10,109 10,010 9,631 9,739 9,790 9,852 9,870 9,932   10,081 10,076 10,137 10,219 10,180 10,196 10,168 10,288 10,158 10,108 10,135 10,095 10,213 10,218 10,235 10,240 10,177 10,090 10,188 10,299 10,375 10,428 10,609 10,662 10,833 10,863 10,951 11,134 11,057 11,063 11,080 11,117 11,325 11,510 10,829 10,580 10,912 11,123 11,322 11,289 11,269 11,247 11,459 11,578 11,679 11,461 11,539 11,678 11,755 11,808 11,910 11,862 11,751 11,728 11,856 11,873 11,529 11,454 11,057 10,672 10,791 10,535 10,850 10,592 10,112 9,945 10,503 10,463 10,852 10,578 10,782 10,800 10,723 10,836 10,881 10,737 10,417 10,246 10,936 11,261 11,254 11,275 11,310 11,164 11,186 11,403 11,495 11,573 11,723 11,547 11,768 11,577 11,602 11,713 11,509 11,390 11,343 11,412 11,320 11,404 11,738 11,896 11,922 11,904 11,975 12,151 11,908 12,056 12,128
C000016745                                                                                                                                                                                                                                                    
Account Value [Line Items]                                                                                                                                                                                                                                                    
Line Graph and Table Measure Name                         Institutional Class                                                                                                                                                                                                                          
Accumulated Value 1,000,000 1,016,946 1,015,779 1,017,799 1,012,260 1,001,265 964,309 975,175 980,238 986,463 988,254 994,453   1,009,383 1,008,954 1,015,071 1,023,349 1,019,485 1,021,123 1,018,320 1,030,388 1,017,394 1,012,345 1,015,077 1,011,039 1,022,841 1,023,371 1,025,086 1,025,666 1,019,347 1,010,705 1,020,550 1,031,673 1,039,268 1,044,637 1,063,932 1,068,071 1,085,115 1,088,161 1,097,052 1,115,429 1,107,742 1,108,346 1,110,143 1,113,829 1,134,776 1,153,386 1,085,041 1,060,035 1,094,421 1,114,374 1,134,317 1,131,058 1,129,042 1,126,853 1,148,146 1,160,057 1,170,228 1,148,372 1,156,206 1,170,211 1,179,208 1,183,285 1,193,553 1,188,712 1,177,564 1,175,242 1,188,141 1,189,847 1,155,254 1,147,777 1,107,901 1,070,577 1,081,244 1,055,519 1,087,174 1,061,317 1,013,125 996,409 1,052,384 1,048,366 1,087,349 1,059,844 1,080,328 1,082,096 1,074,441 1,087,079 1,090,260 1,075,830 1,043,690 1,026,520 1,095,711 1,129,711 1,127,632 1,131,150 1,133,231 1,118,650 1,120,771 1,142,575 1,153,190 1,161,066 1,174,647 1,157,007 1,179,166 1,160,062 1,162,521 1,173,669 1,153,157 1,142,741 1,136,618 1,143,485 1,134,225 1,144,120 1,176,161 1,192,009 1,194,621 1,192,791 1,199,915 1,217,574 1,193,182 1,208,068 1,215,280
DWS Index: Bloomberg Municipal Bond Index                                                                                                                                                                                                                                                    
Account Value [Line Items]                                                                                                                                                                                                                                                    
Accumulated Value 10,000 10,159 10,165 10,179 10,128 10,022 9,648 9,761 9,826 9,894 9,916 9,987   10,146 10,110 10,191 10,269 10,217 10,242 10,187 10,293 10,172 10,142 10,179 10,143 10,259 10,268 10,293 10,319 10,252 10,189 10,302 10,425 10,504 10,560 10,727 10,768 10,916 10,956 11,045 11,219 11,129 11,149 11,177 11,211 11,412 11,559 11,140 11,000 11,350 11,444 11,636 11,582 11,584 11,549 11,724 11,795 11,870 11,682 11,754 11,852 11,888 11,920 12,019 11,975 11,889 11,854 11,955 11,974 11,646 11,605 11,228 10,918 11,080 10,899 11,187 10,941 10,521 10,434 10,922 10,953 11,268 11,013 11,257 11,232 11,134 11,246 11,290 11,128 10,802 10,710 11,390 11,654 11,595 11,610 11,609 11,466 11,432 11,607 11,713 11,805 11,922 11,748 11,951 11,777 11,836 11,954 11,751 11,656 11,664 11,736 11,713 11,815 12,088 12,238 12,266 12,277 12,392 12,547 12,255 12,396 12,442
DWS Index: Bloomberg Municipal Bond Index                                                                                                                                                                                                                                                    
Account Value [Line Items]                                                                                                                                                                                                                                                    
Accumulated Value 10,000 10,159 10,165 10,179 10,128 10,022 9,648 9,761 9,826 9,894 9,916 9,987   10,146 10,110 10,191 10,269 10,217 10,242 10,187 10,293 10,172 10,142 10,179 10,143 10,259 10,268 10,293 10,319 10,252 10,189 10,302 10,425 10,504 10,560 10,727 10,768 10,916 10,956 11,045 11,219 11,129 11,149 11,177 11,211 11,412 11,559 11,140 11,000 11,350 11,444 11,636 11,582 11,584 11,549 11,724 11,795 11,870 11,682 11,754 11,852 11,888 11,920 12,019 11,975 11,889 11,854 11,955 11,974 11,646 11,605 11,228 10,918 11,080 10,899 11,187 10,941 10,521 10,434 10,922 10,953 11,268 11,013 11,257 11,232 11,134 11,246 11,290 11,128 10,802 10,710 11,390 11,654 11,595 11,610 11,609 11,466 11,432 11,607 11,713 11,805 11,922 11,748 11,951 11,777 11,836 11,954 11,751 11,656 11,664 11,736 11,713 11,815 12,088 12,238 12,266 12,277 12,392 12,547 12,255 12,396 12,442
DWS Index: Bloomberg Municipal Bond Index                                                                                                                                                                                                                                                    
Account Value [Line Items]                                                                                                                                                                                                                                                    
Accumulated Value 10,000 10,159 10,165 10,179 10,128 10,022 9,648 9,761 9,826 9,894 9,916 9,987   10,146 10,110 10,191 10,269 10,217 10,242 10,187 10,293 10,172 10,142 10,179 10,143 10,259 10,268 10,293 10,319 10,252 10,189 10,302 10,425 10,504 10,560 10,727 10,768 10,916 10,956 11,045 11,219 11,129 11,149 11,177 11,211 11,412 11,559 11,140 11,000 11,350 11,444 11,636 11,582 11,584 11,549 11,724 11,795 11,870 11,682 11,754 11,852 11,888 11,920 12,019 11,975 11,889 11,854 11,955 11,974 11,646 11,605 11,228 10,918 11,080 10,899 11,187 10,941 10,521 10,434 10,922 10,953 11,268 11,013 11,257 11,232 11,134 11,246 11,290 11,128 10,802 10,710 11,390 11,654 11,595 11,610 11,609 11,466 11,432 11,607 11,713 11,805 11,922 11,748 11,951 11,777 11,836 11,954 11,751 11,656 11,664 11,736 11,713 11,815 12,088 12,238 12,266 12,277 12,392 12,547 12,255 12,396 12,442
DWS Index: Bloomberg Municipal Bond Index                                                                                                                                                                                                                                                    
Account Value [Line Items]                                                                                                                                                                                                                                                    
Accumulated Value $ 1,000,000 $ 1,015,909 $ 1,016,529 $ 1,017,901 $ 1,012,821 $ 1,002,195 $ 964,818 $ 976,145 $ 982,580 $ 989,403 $ 991,551 $ 998,746   $ 1,014,597 $ 1,010,958 $ 1,019,137 $ 1,026,893 $ 1,021,672 $ 1,024,166 $ 1,018,682 $ 1,029,329 $ 1,017,211 $ 1,014,172 $ 1,017,915 $ 1,014,282 $ 1,025,897 $ 1,026,773 $ 1,029,264 $ 1,031,907 $ 1,025,226 $ 1,018,913 $ 1,030,191 $ 1,042,526 $ 1,050,407 $ 1,056,031 $ 1,072,724 $ 1,076,755 $ 1,091,600 $ 1,095,631 $ 1,104,461 $ 1,121,882 $ 1,112,889 $ 1,114,883 $ 1,117,671 $ 1,121,083 $ 1,141,225 $ 1,155,942 $ 1,114,013 $ 1,100,032 $ 1,135,025 $ 1,144,367 $ 1,163,641 $ 1,158,181 $ 1,158,427 $ 1,154,947 $ 1,172,376 $ 1,179,518 $ 1,187,034 $ 1,168,174 $ 1,175,378 $ 1,185,237 $ 1,188,773 $ 1,192,037 $ 1,201,923 $ 1,197,512 $ 1,188,870 $ 1,185,394 $ 1,195,485 $ 1,197,414 $ 1,164,637 $ 1,160,465 $ 1,122,846 $ 1,091,789 $ 1,108,007 $ 1,089,860 $ 1,118,656 $ 1,094,139 $ 1,052,145 $ 1,043,395 $ 1,092,198 $ 1,095,325 $ 1,126,788 $ 1,101,309 $ 1,125,745 $ 1,123,173 $ 1,113,440 $ 1,124,594 $ 1,129,043 $ 1,112,789 $ 1,080,175 $ 1,070,983 $ 1,138,970 $ 1,165,442 $ 1,159,490 $ 1,160,979 $ 1,160,942 $ 1,146,564 $ 1,143,201 $ 1,160,724 $ 1,171,303 $ 1,180,541 $ 1,192,209 $ 1,174,825 $ 1,195,119 $ 1,177,720 $ 1,183,623 $ 1,195,359 $ 1,175,101 $ 1,165,634 $ 1,166,382 $ 1,173,644 $ 1,171,273 $ 1,181,453 $ 1,208,813 $ 1,223,806 $ 1,226,613 $ 1,227,717 $ 1,239,239 $ 1,254,683 $ 1,225,542 $ 1,239,575 $ 1,244,203