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 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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, 2017 |
Jun. 30, 2017 |
Jul. 31, 2026 |
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 |
Jun. 30, 2026 |
Jul. 31, 2026 |
|
| C000013133 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Class A with Maximum Sales Charge | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | $ 9,675 | $ 9,738 | $ 9,703 | $ 9,619 | $ 9,286 | $ 9,389 | $ 9,413 | $ 9,458 | $ 9,483 | $ 9,548 | $ 9,692 | $ 9,655 | $ 9,709 | $ 9,772 | $ 9,755 | $ 9,748 | $ 9,721 | $ 9,847 | $ 9,727 | $ 9,680 | $ 9,724 | $ 9,696 | $ 9,817 | $ 9,834 | $ 9,858 | $ 9,860 | $ 9,810 | $ 9,749 | $ 9,835 | $ 9,932 | $ 10,007 | $ 10,062 | $ 10,191 | $ 10,235 | $ 10,342 | $ 10,375 | $ 10,461 | $ 10,601 | $ 10,526 | $ 10,526 | $ 10,538 | $ 10,562 | $ 10,738 | $ 10,882 | $ 10,525 | $ 10,386 | $ 10,716 | $ 10,763 | $ 10,919 | $ 10,866 | $ 10,869 | $ 10,836 | $ 10,992 | $ 11,058 | $ 11,098 | $ 10,906 | $ 10,958 | $ 11,044 | $ 11,095 | $ 11,113 | $ 11,186 | $ 11,158 | $ 11,063 | $ 11,047 | $ 11,123 | $ 11,131 | $ 10,865 | $ 10,817 | $ 10,528 | $ 10,286 | $ 10,362 | $ 10,246 | $ 10,449 | $ 10,249 | $ 9,925 | $ 9,865 | $ 10,234 | $ 10,245 | $ 10,500 | $ 10,268 | $ 10,467 | $ 10,456 | $ 10,376 | $ 10,460 | $ 10,473 | $ 10,369 | $ 10,111 | $ 9,960 | $ 10,595 | $ 10,848 | $ 10,827 | $ 10,843 | $ 10,834 | $ 10,730 | $ 10,746 | $ 10,921 | $ 11,012 | $ 11,066 | $ 11,169 | $ 11,039 | $ 11,205 | $ 11,049 | $ 11,066 | $ 11,170 | $ 10,975 | $ 10,893 | $ 10,836 | $ 10,904 | $ 10,858 | $ 10,953 | $ 11,263 | $ 11,458 | $ 11,490 | $ 11,508 | $ 11,603 | $ 11,788 | $ 11,498 | $ 11,646 | $ 11,719 | $ 11,829 | $ 11,561 | |
| C000013135 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Class C | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 10,064 | 10,019 | 9,927 | 9,578 | 9,680 | 9,698 | 9,737 | 9,756 | 9,822 | 9,951 | 9,913 | 9,959 | 10,023 | 10,004 | 9,984 | 9,946 | 10,067 | 9,944 | 9,887 | 9,924 | 9,895 | 10,012 | 10,014 | 10,042 | 10,040 | 9,980 | 9,911 | 9,996 | 10,090 | 10,145 | 10,201 | 10,334 | 10,360 | 10,463 | 10,498 | 10,573 | 10,714 | 10,632 | 10,628 | 10,624 | 10,642 | 10,817 | 10,954 | 10,588 | 10,439 | 10,763 | 10,802 | 10,959 | 10,896 | 10,885 | 10,851 | 11,008 | 11,063 | 11,093 | 10,896 | 10,938 | 11,010 | 11,061 | 11,072 | 11,142 | 11,101 | 11,001 | 10,982 | 11,055 | 11,046 | 10,784 | 10,726 | 10,433 | 10,182 | 10,256 | 10,128 | 10,334 | 10,122 | 9,799 | 9,732 | 10,096 | 10,092 | 10,333 | 10,104 | 10,286 | 10,273 | 10,188 | 10,269 | 10,276 | 10,169 | 9,907 | 9,749 | 10,368 | 10,608 | 10,585 | 10,585 | 10,574 | 10,468 | 10,468 | 10,638 | 10,725 | 10,768 | 10,865 | 10,726 | 10,878 | 10,717 | 10,738 | 10,825 | 10,641 | 10,555 | 10,480 | 10,547 | 10,492 | 10,581 | 10,880 | 11,057 | 11,080 | 11,092 | 11,171 | 11,349 | 11,061 | 11,196 | 11,255 | 11,358 | 11,100 | |
| C000092720 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Class I | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,007,738 | 1,004,266 | 995,678 | 961,404 | 972,278 | 974,870 | 979,717 | 982,424 | 989,323 | 1,004,390 | 1,000,782 | 1,006,527 | 1,013,280 | 1,011,665 | 1,011,095 | 1,008,458 | 1,021,694 | 1,009,445 | 1,004,689 | 1,009,450 | 1,006,734 | 1,019,461 | 1,021,360 | 1,024,028 | 1,024,415 | 1,019,339 | 1,013,180 | 1,022,313 | 1,032,569 | 1,040,536 | 1,046,434 | 1,059,999 | 1,064,756 | 1,076,090 | 1,079,686 | 1,088,861 | 1,103,566 | 1,095,943 | 1,096,134 | 1,097,550 | 1,100,260 | 1,118,797 | 1,133,994 | 1,096,980 | 1,082,698 | 1,117,347 | 1,122,430 | 1,138,912 | 1,133,589 | 1,132,901 | 1,130,822 | 1,147,268 | 1,154,327 | 1,158,684 | 1,138,791 | 1,144,431 | 1,153,560 | 1,159,114 | 1,161,173 | 1,168,973 | 1,166,242 | 1,156,532 | 1,155,103 | 1,163,226 | 1,164,197 | 1,136,604 | 1,131,717 | 1,101,682 | 1,076,511 | 1,084,737 | 1,072,692 | 1,094,119 | 1,073,452 | 1,039,593 | 1,033,567 | 1,072,396 | 1,073,746 | 1,100,598 | 1,076,477 | 1,097,520 | 1,096,589 | 1,088,334 | 1,097,367 | 1,098,869 | 1,088,135 | 1,061,271 | 1,045,555 | 1,112,368 | 1,139,168 | 1,137,149 | 1,139,001 | 1,138,311 | 1,127,544 | 1,129,430 | 1,147,956 | 1,157,744 | 1,163,606 | 1,174,646 | 1,161,181 | 1,178,774 | 1,162,645 | 1,164,560 | 1,175,680 | 1,155,424 | 1,146,964 | 1,141,128 | 1,148,527 | 1,143,869 | 1,154,022 | 1,186,855 | 1,207,696 | 1,211,213 | 1,213,365 | 1,223,562 | 1,243,240 | 1,214,232 | 1,230,030 | 1,236,527 | 1,248,365 | 1,221,668 | |
| C000013173 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Class A with Maximum Sales Charge | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 9,675 | 9,746 | 9,726 | 9,650 | 9,368 | 9,420 | 9,445 | 9,490 | 9,506 | 9,587 | 9,669 | 9,629 | 9,683 | 9,727 | 9,724 | 9,702 | 9,652 | 9,726 | 9,664 | 9,623 | 9,640 | 9,618 | 9,693 | 9,709 | 9,763 | 9,786 | 9,732 | 9,678 | 9,762 | 9,857 | 9,920 | 9,966 | 10,070 | 10,085 | 10,199 | 10,243 | 10,328 | 10,462 | 10,397 | 10,402 | 10,406 | 10,430 | 10,584 | 10,701 | 10,397 | 10,236 | 10,496 | 10,582 | 10,739 | 10,698 | 10,709 | 10,689 | 10,827 | 10,900 | 10,962 | 10,796 | 10,837 | 10,911 | 10,953 | 10,974 | 11,056 | 11,022 | 10,935 | 10,911 | 10,994 | 10,992 | 10,743 | 10,687 | 10,416 | 10,165 | 10,259 | 10,095 | 10,354 | 10,092 | 9,755 | 9,701 | 10,170 | 10,171 | 10,433 | 10,192 | 10,402 | 10,392 | 10,293 | 10,372 | 10,397 | 10,265 | 9,977 | 9,834 | 10,500 | 10,762 | 10,742 | 10,758 | 10,751 | 10,652 | 10,644 | 10,797 | 10,882 | 10,943 | 11,053 | 10,908 | 11,075 | 10,929 | 10,979 | 11,088 | 10,870 | 10,841 | 10,787 | 10,886 | 10,843 | 10,954 | 11,256 | 11,439 | 11,480 | 11,509 | 11,609 | 11,757 | 11,497 | 11,636 | 11,701 | 11,781 | 11,557 | |
| C000013172 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Class C | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 10,058 | 10,031 | 9,945 | 9,648 | 9,705 | 9,715 | 9,755 | 9,775 | 9,843 | 9,921 | 9,883 | 9,923 | 9,962 | 9,953 | 9,924 | 9,866 | 9,935 | 9,865 | 9,828 | 9,829 | 9,810 | 9,870 | 9,891 | 9,929 | 9,957 | 9,885 | 9,823 | 9,903 | 9,993 | 10,052 | 10,092 | 10,191 | 10,210 | 10,319 | 10,358 | 10,426 | 10,567 | 10,494 | 10,481 | 10,489 | 10,506 | 10,655 | 10,756 | 10,442 | 10,274 | 10,540 | 10,620 | 10,761 | 10,724 | 10,718 | 10,690 | 10,822 | 10,889 | 10,944 | 10,771 | 10,805 | 10,872 | 10,907 | 10,921 | 10,997 | 10,955 | 10,861 | 10,831 | 10,907 | 10,908 | 10,642 | 10,582 | 10,315 | 10,050 | 10,147 | 9,978 | 10,228 | 9,962 | 9,612 | 9,562 | 10,010 | 10,014 | 10,256 | 10,013 | 10,213 | 10,208 | 10,092 | 10,164 | 10,193 | 10,057 | 9,757 | 9,621 | 10,258 | 10,507 | 10,493 | 10,490 | 10,477 | 10,384 | 10,370 | 10,502 | 10,589 | 10,643 | 10,732 | 10,583 | 10,739 | 10,601 | 10,643 | 10,732 | 10,524 | 10,490 | 10,431 | 10,520 | 10,460 | 10,573 | 10,858 | 11,017 | 11,061 | 11,082 | 11,159 | 11,308 | 11,049 | 11,176 | 11,221 | 11,302 | 11,075 | |
| C000063955 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Class I | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,007,555 | 1,005,615 | 997,889 | 968,943 | 974,499 | 977,261 | 981,999 | 984,771 | 992,416 | 1,001,073 | 998,038 | 1,002,829 | 1,007,592 | 1,007,452 | 1,005,330 | 1,000,257 | 1,008,111 | 1,001,836 | 998,798 | 999,692 | 997,548 | 1,005,488 | 1,007,411 | 1,013,119 | 1,015,744 | 1,010,275 | 1,004,800 | 1,013,718 | 1,023,726 | 1,030,515 | 1,035,379 | 1,046,367 | 1,048,089 | 1,061,179 | 1,065,933 | 1,073,856 | 1,089,120 | 1,081,448 | 1,082,106 | 1,083,767 | 1,085,378 | 1,102,674 | 1,113,924 | 1,082,451 | 1,065,934 | 1,094,281 | 1,103,401 | 1,118,934 | 1,115,959 | 1,116,221 | 1,114,279 | 1,128,833 | 1,136,686 | 1,143,349 | 1,126,138 | 1,130,688 | 1,138,553 | 1,143,097 | 1,145,494 | 1,154,315 | 1,150,912 | 1,141,989 | 1,139,698 | 1,148,566 | 1,149,619 | 1,122,675 | 1,117,089 | 1,089,986 | 1,062,888 | 1,072,891 | 1,057,048 | 1,083,114 | 1,055,961 | 1,020,845 | 1,015,329 | 1,064,635 | 1,065,996 | 1,092,505 | 1,067,470 | 1,089,624 | 1,088,731 | 1,078,543 | 1,087,014 | 1,089,781 | 1,077,332 | 1,046,165 | 1,031,373 | 1,101,381 | 1,129,001 | 1,127,158 | 1,128,944 | 1,128,400 | 1,119,381 | 1,118,754 | 1,133,830 | 1,144,115 | 1,150,785 | 1,161,288 | 1,146,223 | 1,163,962 | 1,150,034 | 1,154,240 | 1,165,905 | 1,143,179 | 1,141,594 | 1,134,847 | 1,145,447 | 1,141,111 | 1,153,030 | 1,186,224 | 1,204,471 | 1,210,251 | 1,213,509 | 1,222,926 | 1,240,021 | 1,211,534 | 1,227,622 | 1,233,473 | 1,243,362 | 1,218,270 | |
| C000013114 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Class A with Maximum Sales Charge | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 9,675 | 9,697 | 9,650 | 9,563 | 9,249 | 9,352 | 9,374 | 9,416 | 9,437 | 9,498 | 9,651 | 9,612 | 9,654 | 9,715 | 9,675 | 9,676 | 9,646 | 9,738 | 9,595 | 9,545 | 9,596 | 9,555 | 9,658 | 9,658 | 9,669 | 9,689 | 9,625 | 9,562 | 9,657 | 9,773 | 9,846 | 9,898 | 10,024 | 10,053 | 10,167 | 10,207 | 10,289 | 10,447 | 10,368 | 10,364 | 10,372 | 10,401 | 10,557 | 10,661 | 10,386 | 10,262 | 10,571 | 10,609 | 10,744 | 10,705 | 10,710 | 10,671 | 10,798 | 10,835 | 10,872 | 10,724 | 10,761 | 10,832 | 10,858 | 10,874 | 10,955 | 10,925 | 10,851 | 10,832 | 10,891 | 10,894 | 10,661 | 10,620 | 10,376 | 10,166 | 10,293 | 10,177 | 10,373 | 10,186 | 9,876 | 9,827 | 10,188 | 10,196 | 10,432 | 10,236 | 10,406 | 10,382 | 10,289 | 10,369 | 10,378 | 10,263 | 9,940 | 9,792 | 10,484 | 10,709 | 10,689 | 10,694 | 10,674 | 10,572 | 10,577 | 10,712 | 10,788 | 10,840 | 10,953 | 10,802 | 11,000 | 10,824 | 10,816 | 10,942 | 10,703 | 10,623 | 10,543 | 10,609 | 10,516 | 10,645 | 10,984 | 11,163 | 11,194 | 11,212 | 11,278 | 11,435 | 11,176 | 11,333 | 11,376 | 11,457 | 11,217 | |
| C000013116 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Class C | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 10,017 | 9,967 | 9,878 | 9,545 | 9,648 | 9,665 | 9,701 | 9,716 | 9,771 | 9,912 | 9,870 | 9,915 | 9,969 | 9,926 | 9,922 | 9,869 | 9,972 | 9,812 | 9,760 | 9,804 | 9,750 | 9,853 | 9,839 | 9,853 | 9,858 | 9,793 | 9,719 | 9,814 | 9,928 | 10,002 | 10,038 | 10,161 | 10,184 | 10,296 | 10,329 | 10,401 | 10,553 | 10,464 | 10,465 | 10,468 | 10,490 | 10,631 | 10,733 | 10,449 | 10,328 | 10,632 | 10,662 | 10,783 | 10,740 | 10,739 | 10,697 | 10,810 | 10,839 | 10,878 | 10,714 | 10,753 | 10,814 | 10,832 | 10,841 | 10,911 | 10,877 | 10,803 | 10,769 | 10,818 | 10,814 | 10,583 | 10,530 | 10,289 | 10,080 | 10,192 | 10,069 | 10,255 | 10,067 | 9,757 | 9,696 | 10,054 | 10,057 | 10,279 | 10,074 | 10,235 | 10,207 | 10,117 | 10,186 | 10,189 | 10,069 | 9,739 | 9,589 | 10,268 | 10,479 | 10,445 | 10,445 | 10,422 | 10,325 | 10,314 | 10,443 | 10,507 | 10,549 | 10,658 | 10,506 | 10,680 | 10,505 | 10,494 | 10,614 | 10,372 | 10,295 | 10,208 | 10,263 | 10,175 | 10,286 | 10,609 | 10,765 | 10,799 | 10,810 | 10,865 | 11,012 | 10,753 | 10,900 | 10,922 | 11,002 | 10,773 | |
| C000092718 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Class I | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,002,464 | 997,761 | 988,917 | 956,662 | 967,430 | 969,875 | 974,351 | 977,719 | 983,226 | 999,205 | 995,344 | 999,779 | 1,006,323 | 1,002,352 | 1,002,597 | 999,621 | 1,009,405 | 994,770 | 989,738 | 995,200 | 991,042 | 1,001,953 | 1,002,129 | 1,003,352 | 1,005,604 | 999,209 | 992,804 | 1,002,837 | 1,014,998 | 1,023,847 | 1,028,393 | 1,041,562 | 1,044,827 | 1,056,841 | 1,061,170 | 1,069,909 | 1,086,424 | 1,078,456 | 1,078,219 | 1,079,212 | 1,082,410 | 1,098,851 | 1,109,810 | 1,081,335 | 1,068,587 | 1,101,013 | 1,105,144 | 1,119,415 | 1,115,514 | 1,116,192 | 1,112,322 | 1,125,721 | 1,129,824 | 1,133,908 | 1,118,576 | 1,122,649 | 1,130,230 | 1,133,162 | 1,134,973 | 1,143,677 | 1,140,747 | 1,133,206 | 1,131,367 | 1,137,717 | 1,138,205 | 1,114,100 | 1,109,963 | 1,084,638 | 1,062,858 | 1,076,392 | 1,064,342 | 1,085,069 | 1,065,705 | 1,033,455 | 1,028,481 | 1,066,419 | 1,067,465 | 1,092,369 | 1,072,032 | 1,089,974 | 1,087,598 | 1,078,048 | 1,086,669 | 1,087,759 | 1,075,879 | 1,042,234 | 1,026,881 | 1,099,619 | 1,123,424 | 1,121,504 | 1,122,150 | 1,120,260 | 1,109,785 | 1,110,419 | 1,124,828 | 1,132,941 | 1,138,625 | 1,150,696 | 1,135,042 | 1,156,012 | 1,137,720 | 1,137,114 | 1,150,516 | 1,125,574 | 1,117,315 | 1,109,061 | 1,116,271 | 1,106,638 | 1,120,391 | 1,156,270 | 1,175,273 | 1,178,713 | 1,180,830 | 1,188,021 | 1,204,702 | 1,177,625 | 1,194,356 | 1,197,750 | 1,207,873 | 1,182,958 | |
| C000100969 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Class A with Maximum Sales Charge | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 9,675 | 9,705 | 9,679 | 9,573 | 9,168 | 9,240 | 9,281 | 9,347 | 9,388 | 9,486 | 9,623 | 9,598 | 9,679 | 9,767 | 9,749 | 9,739 | 9,697 | 9,778 | 9,672 | 9,650 | 9,676 | 9,645 | 9,761 | 9,772 | 9,816 | 9,826 | 9,779 | 9,716 | 9,794 | 9,880 | 9,974 | 10,028 | 10,147 | 10,174 | 10,294 | 10,338 | 10,406 | 10,534 | 10,468 | 10,477 | 10,495 | 10,530 | 10,708 | 10,872 | 10,172 | 9,875 | 10,186 | 10,455 | 10,647 | 10,648 | 10,643 | 10,628 | 10,804 | 10,953 | 11,112 | 10,981 | 11,014 | 11,107 | 11,173 | 11,230 | 11,322 | 11,283 | 11,183 | 11,144 | 11,238 | 11,239 | 10,957 | 10,893 | 10,585 | 10,287 | 10,351 | 10,153 | 10,364 | 10,176 | 9,851 | 9,763 | 10,136 | 10,135 | 10,421 | 10,216 | 10,400 | 10,379 | 10,321 | 10,405 | 10,431 | 10,298 | 10,025 | 9,884 | 10,498 | 10,744 | 10,765 | 10,775 | 10,795 | 10,699 | 10,709 | 10,883 | 10,990 | 11,097 | 11,234 | 11,078 | 11,264 | 11,108 | 11,147 | 11,265 | 11,068 | 11,023 | 10,964 | 11,045 | 10,977 | 11,079 | 11,393 | 11,564 | 11,606 | 11,627 | 11,708 | 11,893 | 11,618 | 11,774 | 11,846 | 11,952 | 11,729 | |
| C000100970 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Class C | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 10,024 | 9,983 | 9,868 | 9,444 | 9,512 | 9,548 | 9,610 | 9,647 | 9,749 | 9,884 | 9,844 | 9,929 | 10,004 | 9,980 | 9,963 | 9,922 | 9,991 | 9,885 | 9,848 | 9,868 | 9,839 | 9,943 | 9,956 | 9,986 | 9,998 | 9,944 | 9,873 | 9,947 | 10,028 | 10,109 | 10,157 | 10,272 | 10,293 | 10,416 | 10,454 | 10,508 | 10,631 | 10,557 | 10,560 | 10,580 | 10,599 | 10,781 | 10,940 | 10,221 | 9,915 | 10,230 | 10,486 | 10,680 | 10,674 | 10,662 | 10,632 | 10,810 | 10,943 | 11,096 | 10,958 | 10,993 | 11,079 | 11,129 | 11,179 | 11,272 | 11,226 | 11,119 | 11,065 | 11,152 | 11,145 | 10,867 | 10,788 | 10,476 | 10,184 | 10,232 | 10,030 | 10,241 | 10,049 | 9,713 | 9,620 | 9,990 | 9,983 | 10,249 | 10,051 | 10,225 | 10,199 | 10,135 | 10,211 | 10,230 | 10,084 | 9,820 | 9,675 | 10,271 | 10,505 | 10,518 | 10,522 | 10,534 | 10,435 | 10,438 | 10,601 | 10,698 | 10,785 | 10,912 | 10,763 | 10,928 | 10,769 | 10,800 | 10,918 | 10,720 | 10,670 | 10,596 | 10,678 | 10,596 | 10,687 | 10,993 | 11,152 | 11,185 | 11,199 | 11,269 | 11,430 | 11,169 | 11,311 | 11,374 | 11,468 | 11,236 | |
| C000100971 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Class I | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,003,260 | 1,000,798 | 989,329 | 948,457 | 955,325 | 960,522 | 967,535 | 972,022 | 982,291 | 996,655 | 994,368 | 1,002,887 | 1,012,196 | 1,010,560 | 1,009,731 | 1,005,591 | 1,014,193 | 1,003,491 | 1,000,520 | 1,003,399 | 1,001,296 | 1,012,725 | 1,014,893 | 1,019,644 | 1,020,943 | 1,016,275 | 1,009,893 | 1,018,198 | 1,027,393 | 1,037,415 | 1,043,166 | 1,054,883 | 1,057,961 | 1,071,462 | 1,076,261 | 1,082,731 | 1,097,149 | 1,090,507 | 1,090,819 | 1,093,758 | 1,096,699 | 1,116,423 | 1,133,690 | 1,060,199 | 1,029,435 | 1,062,932 | 1,090,351 | 1,111,467 | 1,111,837 | 1,111,476 | 1,110,173 | 1,128,773 | 1,143,629 | 1,161,417 | 1,147,043 | 1,151,683 | 1,161,597 | 1,167,813 | 1,174,048 | 1,184,810 | 1,180,953 | 1,170,726 | 1,166,904 | 1,176,118 | 1,177,362 | 1,148,099 | 1,140,650 | 1,108,661 | 1,078,696 | 1,084,680 | 1,064,214 | 1,087,417 | 1,068,029 | 1,033,189 | 1,024,201 | 1,064,455 | 1,064,567 | 1,093,869 | 1,073,593 | 1,092,065 | 1,091,137 | 1,085,304 | 1,094,255 | 1,097,230 | 1,082,581 | 1,055,133 | 1,040,501 | 1,104,297 | 1,131,391 | 1,133,746 | 1,134,062 | 1,137,364 | 1,127,598 | 1,128,890 | 1,147,439 | 1,157,880 | 1,169,386 | 1,184,035 | 1,168,919 | 1,187,730 | 1,171,537 | 1,175,902 | 1,189,617 | 1,168,106 | 1,163,548 | 1,157,601 | 1,167,452 | 1,159,472 | 1,170,467 | 1,204,890 | 1,223,267 | 1,227,896 | 1,230,458 | 1,239,233 | 1,257,902 | 1,230,251 | 1,246,929 | 1,254,873 | 1,266,295 | 1,241,814 | |
| C000013127 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Class A with Maximum Sales Charge | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 9,675 | 9,723 | 9,700 | 9,635 | 9,293 | 9,372 | 9,368 | 9,417 | 9,455 | 9,536 | 9,679 | 9,665 | 9,714 | 9,796 | 9,784 | 9,782 | 9,758 | 9,819 | 9,729 | 9,704 | 9,743 | 9,717 | 9,821 | 9,848 | 9,898 | 9,926 | 9,866 | 9,816 | 9,910 | 10,014 | 10,095 | 10,154 | 10,313 | 10,361 | 10,510 | 10,568 | 10,660 | 10,875 | 10,786 | 10,787 | 10,801 | 10,827 | 11,058 | 11,232 | 10,733 | 10,484 | 10,866 | 10,961 | 11,159 | 11,138 | 11,151 | 11,128 | 11,304 | 11,409 | 11,526 | 11,315 | 11,373 | 11,466 | 11,512 | 11,546 | 11,638 | 11,589 | 11,492 | 11,467 | 11,557 | 11,561 | 11,256 | 11,180 | 10,850 | 10,509 | 10,591 | 10,431 | 10,695 | 10,427 | 10,061 | 9,975 | 10,415 | 10,428 | 10,698 | 10,465 | 10,675 | 10,677 | 10,592 | 10,681 | 10,706 | 10,607 | 10,358 | 10,246 | 10,788 | 11,016 | 10,991 | 10,993 | 10,983 | 10,871 | 10,863 | 11,020 | 11,114 | 11,195 | 11,316 | 11,166 | 11,352 | 11,213 | 11,204 | 11,313 | 11,094 | 11,033 | 10,906 | 10,990 | 10,928 | 11,026 | 11,377 | 11,541 | 11,574 | 11,580 | 11,666 | 11,822 | 11,596 | 11,737 | 11,784 | 11,886 | 11,642 | |
| C000013129 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Class C | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 10,052 | 10,014 | 9,945 | 9,582 | 9,655 | 9,646 | 9,690 | 9,723 | 9,807 | 9,943 | 9,925 | 9,968 | 10,044 | 10,027 | 10,019 | 9,981 | 10,046 | 9,953 | 9,913 | 9,956 | 9,916 | 10,023 | 10,034 | 10,078 | 10,110 | 10,046 | 9,982 | 10,068 | 10,165 | 10,248 | 10,301 | 10,450 | 10,492 | 10,641 | 10,692 | 10,775 | 10,989 | 10,897 | 10,892 | 10,889 | 10,919 | 11,147 | 11,310 | 10,800 | 10,544 | 10,917 | 11,003 | 11,199 | 11,173 | 11,180 | 11,141 | 11,305 | 11,423 | 11,518 | 11,311 | 11,361 | 11,446 | 11,484 | 11,500 | 11,583 | 11,542 | 11,433 | 11,404 | 11,484 | 11,481 | 11,173 | 11,095 | 10,752 | 10,410 | 10,482 | 10,314 | 10,570 | 10,298 | 9,934 | 9,847 | 10,270 | 10,265 | 10,526 | 10,302 | 10,506 | 10,502 | 10,405 | 10,495 | 10,502 | 10,403 | 10,151 | 10,029 | 10,556 | 10,776 | 10,748 | 10,732 | 10,729 | 10,607 | 10,593 | 10,735 | 10,829 | 10,887 | 11,007 | 10,861 | 11,029 | 10,882 | 10,879 | 10,976 | 10,754 | 10,680 | 10,544 | 10,641 | 10,566 | 10,651 | 10,984 | 11,142 | 11,167 | 11,154 | 11,228 | 11,379 | 11,152 | 11,277 | 11,314 | 11,415 | 11,172 | |
| C000063948 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Class I | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,006,180 | 1,002,892 | 996,387 | 961,202 | 969,523 | 969,302 | 974,465 | 978,601 | 988,139 | 1,002,036 | 1,000,801 | 1,006,075 | 1,014,741 | 1,013,624 | 1,013,560 | 1,011,255 | 1,018,850 | 1,009,716 | 1,006,114 | 1,011,436 | 1,008,939 | 1,019,862 | 1,021,798 | 1,027,137 | 1,030,164 | 1,025,222 | 1,019,097 | 1,028,997 | 1,040,038 | 1,049,709 | 1,054,915 | 1,072,749 | 1,076,772 | 1,092,390 | 1,098,664 | 1,108,364 | 1,130,928 | 1,123,069 | 1,123,372 | 1,123,791 | 1,127,856 | 1,152,065 | 1,169,185 | 1,118,551 | 1,091,623 | 1,131,494 | 1,141,483 | 1,163,493 | 1,161,395 | 1,162,848 | 1,159,369 | 1,177,830 | 1,190,152 | 1,202,394 | 1,180,510 | 1,186,661 | 1,197,761 | 1,201,360 | 1,205,074 | 1,214,768 | 1,210,943 | 1,200,940 | 1,198,392 | 1,208,018 | 1,208,638 | 1,177,065 | 1,169,271 | 1,133,818 | 1,099,661 | 1,108,350 | 1,090,628 | 1,118,390 | 1,090,508 | 1,053,735 | 1,044,965 | 1,091,090 | 1,091,343 | 1,119,764 | 1,096,931 | 1,119,105 | 1,119,430 | 1,109,449 | 1,120,246 | 1,123,122 | 1,112,915 | 1,087,012 | 1,075,479 | 1,131,073 | 1,156,470 | 1,154,125 | 1,154,533 | 1,153,625 | 1,140,817 | 1,141,421 | 1,156,817 | 1,168,189 | 1,175,565 | 1,189,808 | 1,174,221 | 1,193,966 | 1,178,265 | 1,178,864 | 1,190,499 | 1,166,363 | 1,160,151 | 1,146,963 | 1,157,345 | 1,151,055 | 1,161,530 | 1,198,675 | 1,216,155 | 1,219,831 | 1,220,651 | 1,228,480 | 1,246,465 | 1,221,547 | 1,238,021 | 1,241,683 | 1,254,141 | 1,227,240 | |
| C000013145 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Class A with Maximum Sales Charge | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 9,675 | 9,692 | 9,646 | 9,567 | 9,263 | 9,346 | 9,377 | 9,427 | 9,436 | 9,498 | 9,604 | 9,578 | 9,619 | 9,682 | 9,646 | 9,643 | 9,584 | 9,648 | 9,589 | 9,575 | 9,605 | 9,591 | 9,679 | 9,709 | 9,731 | 9,753 | 9,703 | 9,653 | 9,730 | 9,819 | 9,884 | 9,938 | 10,027 | 10,058 | 10,169 | 10,221 | 10,274 | 10,420 | 10,352 | 10,355 | 10,359 | 10,389 | 10,537 | 10,661 | 10,350 | 10,231 | 10,501 | 10,564 | 10,712 | 10,662 | 10,673 | 10,647 | 10,794 | 10,868 | 10,940 | 10,765 | 10,811 | 10,908 | 10,966 | 11,000 | 11,097 | 11,056 | 10,965 | 10,949 | 11,034 | 11,056 | 10,760 | 10,695 | 10,385 | 10,063 | 10,175 | 10,006 | 10,235 | 10,013 | 9,636 | 9,532 | 10,036 | 10,010 | 10,296 | 10,023 | 10,248 | 10,237 | 10,160 | 10,269 | 10,285 | 10,155 | 9,878 | 9,707 | 10,356 | 10,602 | 10,593 | 10,598 | 10,589 | 10,499 | 10,504 | 10,659 | 10,747 | 10,807 | 10,966 | 10,792 | 10,996 | 10,822 | 10,812 | 10,933 | 10,726 | 10,632 | 10,552 | 10,614 | 10,533 | 10,624 | 10,974 | 11,123 | 11,158 | 11,178 | 11,241 | 11,407 | 11,164 | 11,331 | 11,395 | 11,505 | 11,281 | |
| C000013147 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Class C | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 10,012 | 9,960 | 9,866 | 9,558 | 9,625 | 9,661 | 9,706 | 9,710 | 9,766 | 9,867 | 9,837 | 9,872 | 9,929 | 9,888 | 9,880 | 9,817 | 9,875 | 9,811 | 9,781 | 9,806 | 9,787 | 9,869 | 9,894 | 9,910 | 9,927 | 9,872 | 9,818 | 9,888 | 9,970 | 10,029 | 10,077 | 10,170 | 10,184 | 10,299 | 10,333 | 10,390 | 10,527 | 10,455 | 10,441 | 10,451 | 10,463 | 10,625 | 10,728 | 10,420 | 10,288 | 10,556 | 10,611 | 10,749 | 10,695 | 10,699 | 10,668 | 10,805 | 10,869 | 10,933 | 10,747 | 10,785 | 10,884 | 10,934 | 10,961 | 11,048 | 11,002 | 10,909 | 10,875 | 10,963 | 10,978 | 10,676 | 10,608 | 10,294 | 9,967 | 10,069 | 9,902 | 10,127 | 9,886 | 9,508 | 9,403 | 9,891 | 9,861 | 10,140 | 9,863 | 10,084 | 10,068 | 9,978 | 10,075 | 10,085 | 9,956 | 9,676 | 9,497 | 10,131 | 10,371 | 10,357 | 10,357 | 10,343 | 10,240 | 10,239 | 10,393 | 10,470 | 10,521 | 10,664 | 10,496 | 10,682 | 10,500 | 10,498 | 10,594 | 10,394 | 10,302 | 10,221 | 10,274 | 10,180 | 10,259 | 10,594 | 10,740 | 10,754 | 10,767 | 10,819 | 10,982 | 10,737 | 10,900 | 10,954 | 11,050 | 10,828 | |
| C000063951 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Class I | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,003,058 | 998,436 | 989,403 | 958,282 | 966,988 | 970,301 | 975,630 | 977,851 | 983,279 | 994,393 | 991,971 | 996,379 | 1,003,057 | 1,000,624 | 999,334 | 994,598 | 1,000,237 | 995,446 | 992,981 | 996,327 | 994,986 | 1,004,284 | 1,007,617 | 1,010,076 | 1,012,546 | 1,007,530 | 1,003,700 | 1,010,621 | 1,020,037 | 1,027,012 | 1,032,733 | 1,043,330 | 1,045,474 | 1,057,249 | 1,062,805 | 1,069,708 | 1,083,803 | 1,076,893 | 1,077,414 | 1,078,037 | 1,081,336 | 1,098,132 | 1,109,943 | 1,077,837 | 1,065,731 | 1,093,905 | 1,100,646 | 1,116,184 | 1,112,503 | 1,112,498 | 1,109,988 | 1,125,537 | 1,134,627 | 1,141,072 | 1,123,057 | 1,128,036 | 1,138,275 | 1,144,544 | 1,148,274 | 1,158,578 | 1,154,539 | 1,145,234 | 1,143,769 | 1,154,141 | 1,155,306 | 1,124,758 | 1,119,400 | 1,086,066 | 1,052,657 | 1,064,529 | 1,047,106 | 1,071,100 | 1,048,226 | 1,009,092 | 998,335 | 1,051,177 | 1,048,603 | 1,078,645 | 1,050,371 | 1,074,030 | 1,073,065 | 1,065,231 | 1,075,377 | 1,078,622 | 1,065,213 | 1,036,467 | 1,017,434 | 1,086,837 | 1,112,781 | 1,112,030 | 1,112,731 | 1,112,012 | 1,101,323 | 1,103,447 | 1,119,944 | 1,129,329 | 1,135,830 | 1,152,615 | 1,134,631 | 1,156,221 | 1,138,147 | 1,137,335 | 1,150,219 | 1,128,734 | 1,119,124 | 1,110,932 | 1,117,625 | 1,109,332 | 1,119,052 | 1,155,997 | 1,171,796 | 1,175,696 | 1,178,036 | 1,183,266 | 1,202,454 | 1,177,110 | 1,194,905 | 1,201,875 | 1,213,567 | 1,190,805 | |
| EATON VANCE Index: Bloomberg Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 10,013 | 9,964 | 9,859 | 9,491 | 9,603 | 9,666 | 9,733 | 9,754 | 9,825 | 9,981 | 9,945 | 10,026 | 10,102 | 10,051 | 10,075 | 10,021 | 10,126 | 10,007 | 9,977 | 10,014 | 9,978 | 10,092 | 10,101 | 10,125 | 10,151 | 10,086 | 10,023 | 10,134 | 10,256 | 10,333 | 10,389 | 10,553 | 10,592 | 10,738 | 10,778 | 10,865 | 11,036 | 10,948 | 10,968 | 10,995 | 11,029 | 11,227 | 11,371 | 10,959 | 10,821 | 11,166 | 11,258 | 11,447 | 11,393 | 11,396 | 11,362 | 11,533 | 11,603 | 11,677 | 11,492 | 11,563 | 11,660 | 11,694 | 11,727 | 11,824 | 11,780 | 11,695 | 11,661 | 11,760 | 11,779 | 11,457 | 11,416 | 11,046 | 10,740 | 10,900 | 10,721 | 11,005 | 10,763 | 10,350 | 10,264 | 10,744 | 10,775 | 11,085 | 10,834 | 11,074 | 11,049 | 10,953 | 11,063 | 11,107 | 10,947 | 10,626 | 10,536 | 11,204 | 11,465 | 11,406 | 11,421 | 11,421 | 11,279 | 11,246 | 11,418 | 11,523 | 11,613 | 11,728 | 11,557 | 11,757 | 11,586 | 11,644 | 11,759 | 11,560 | 11,467 | 11,474 | 11,546 | 11,522 | 11,622 | 11,892 | 12,039 | 12,067 | 12,078 | 12,191 | 12,343 | 12,056 | 12,194 | 12,240 | 12,358 | 12,129 | |
| EATON VANCE Index: Bloomberg Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 10,013 | 9,964 | 9,859 | 9,491 | 9,603 | 9,666 | 9,733 | 9,754 | 9,825 | 9,981 | 9,945 | 10,026 | 10,102 | 10,051 | 10,075 | 10,021 | 10,126 | 10,007 | 9,977 | 10,014 | 9,978 | 10,092 | 10,101 | 10,125 | 10,151 | 10,086 | 10,023 | 10,134 | 10,256 | 10,333 | 10,389 | 10,553 | 10,592 | 10,738 | 10,778 | 10,865 | 11,036 | 10,948 | 10,968 | 10,995 | 11,029 | 11,227 | 11,371 | 10,959 | 10,821 | 11,166 | 11,258 | 11,447 | 11,393 | 11,396 | 11,362 | 11,533 | 11,603 | 11,677 | 11,492 | 11,563 | 11,660 | 11,694 | 11,727 | 11,824 | 11,780 | 11,695 | 11,661 | 11,760 | 11,779 | 11,457 | 11,416 | 11,046 | 10,740 | 10,900 | 10,721 | 11,005 | 10,763 | 10,350 | 10,264 | 10,744 | 10,775 | 11,085 | 10,834 | 11,074 | 11,049 | 10,953 | 11,063 | 11,107 | 10,947 | 10,626 | 10,536 | 11,204 | 11,465 | 11,406 | 11,421 | 11,421 | 11,279 | 11,246 | 11,418 | 11,523 | 11,613 | 11,728 | 11,557 | 11,757 | 11,586 | 11,644 | 11,759 | 11,560 | 11,467 | 11,474 | 11,546 | 11,522 | 11,622 | 11,892 | 12,039 | 12,067 | 12,078 | 12,191 | 12,343 | 12,056 | 12,194 | 12,240 | 12,358 | 12,129 | |
| EATON VANCE Index: Bloomberg Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,001,349 | 996,352 | 985,899 | 949,129 | 960,272 | 966,603 | 973,315 | 975,428 | 982,505 | 998,099 | 994,519 | 1,002,565 | 1,010,195 | 1,005,059 | 1,007,512 | 1,002,117 | 1,012,591 | 1,000,670 | 997,680 | 1,001,363 | 997,789 | 1,009,215 | 1,010,076 | 1,012,527 | 1,015,127 | 1,008,555 | 1,002,345 | 1,013,439 | 1,025,573 | 1,033,326 | 1,038,858 | 1,055,280 | 1,059,246 | 1,073,849 | 1,077,815 | 1,086,501 | 1,103,639 | 1,094,792 | 1,096,754 | 1,099,497 | 1,102,854 | 1,122,668 | 1,137,146 | 1,095,898 | 1,082,145 | 1,116,569 | 1,125,759 | 1,144,719 | 1,139,348 | 1,139,590 | 1,136,167 | 1,153,312 | 1,160,338 | 1,167,732 | 1,149,178 | 1,156,266 | 1,165,964 | 1,169,443 | 1,172,654 | 1,182,379 | 1,178,040 | 1,169,539 | 1,166,119 | 1,176,046 | 1,177,943 | 1,145,700 | 1,141,595 | 1,104,588 | 1,074,036 | 1,089,990 | 1,072,138 | 1,100,466 | 1,076,347 | 1,035,037 | 1,026,429 | 1,074,438 | 1,077,515 | 1,108,466 | 1,083,402 | 1,107,440 | 1,104,910 | 1,095,335 | 1,106,307 | 1,110,684 | 1,094,694 | 1,062,610 | 1,053,567 | 1,120,449 | 1,146,491 | 1,140,635 | 1,142,100 | 1,142,064 | 1,127,920 | 1,124,611 | 1,141,849 | 1,152,257 | 1,161,344 | 1,172,822 | 1,155,721 | 1,175,685 | 1,158,569 | 1,164,376 | 1,175,920 | 1,155,992 | 1,146,678 | 1,147,415 | 1,154,558 | 1,152,226 | 1,162,241 | 1,189,156 | 1,203,905 | 1,206,666 | 1,207,753 | 1,219,087 | 1,234,281 | 1,205,613 | 1,219,418 | 1,223,971 | 1,235,768 | 1,212,892 | |
| EATON VANCE Index: Bloomberg Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 10,013 | 9,964 | 9,859 | 9,491 | 9,603 | 9,666 | 9,733 | 9,754 | 9,825 | 9,981 | 9,945 | 10,026 | 10,102 | 10,051 | 10,075 | 10,021 | 10,126 | 10,007 | 9,977 | 10,014 | 9,978 | 10,092 | 10,101 | 10,125 | 10,151 | 10,086 | 10,023 | 10,134 | 10,256 | 10,333 | 10,389 | 10,553 | 10,592 | 10,738 | 10,778 | 10,865 | 11,036 | 10,948 | 10,968 | 10,995 | 11,029 | 11,227 | 11,371 | 10,959 | 10,821 | 11,166 | 11,258 | 11,447 | 11,393 | 11,396 | 11,362 | 11,533 | 11,603 | 11,677 | 11,492 | 11,563 | 11,660 | 11,694 | 11,727 | 11,824 | 11,780 | 11,695 | 11,661 | 11,760 | 11,779 | 11,457 | 11,416 | 11,046 | 10,740 | 10,900 | 10,721 | 11,005 | 10,763 | 10,350 | 10,264 | 10,744 | 10,775 | 11,085 | 10,834 | 11,074 | 11,049 | 10,953 | 11,063 | 11,107 | 10,947 | 10,626 | 10,536 | 11,204 | 11,465 | 11,406 | 11,421 | 11,421 | 11,279 | 11,246 | 11,418 | 11,523 | 11,613 | 11,728 | 11,557 | 11,757 | 11,586 | 11,644 | 11,759 | 11,560 | 11,467 | 11,474 | 11,546 | 11,522 | 11,622 | 11,892 | 12,039 | 12,067 | 12,078 | 12,191 | 12,343 | 12,056 | 12,194 | 12,240 | 12,358 | 12,129 | |
| EATON VANCE Index: Bloomberg Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 10,013 | 9,964 | 9,859 | 9,491 | 9,603 | 9,666 | 9,733 | 9,754 | 9,825 | 9,981 | 9,945 | 10,026 | 10,102 | 10,051 | 10,075 | 10,021 | 10,126 | 10,007 | 9,977 | 10,014 | 9,978 | 10,092 | 10,101 | 10,125 | 10,151 | 10,086 | 10,023 | 10,134 | 10,256 | 10,333 | 10,389 | 10,553 | 10,592 | 10,738 | 10,778 | 10,865 | 11,036 | 10,948 | 10,968 | 10,995 | 11,029 | 11,227 | 11,371 | 10,959 | 10,821 | 11,166 | 11,258 | 11,447 | 11,393 | 11,396 | 11,362 | 11,533 | 11,603 | 11,677 | 11,492 | 11,563 | 11,660 | 11,694 | 11,727 | 11,824 | 11,780 | 11,695 | 11,661 | 11,760 | 11,779 | 11,457 | 11,416 | 11,046 | 10,740 | 10,900 | 10,721 | 11,005 | 10,763 | 10,350 | 10,264 | 10,744 | 10,775 | 11,085 | 10,834 | 11,074 | 11,049 | 10,953 | 11,063 | 11,107 | 10,947 | 10,626 | 10,536 | 11,204 | 11,465 | 11,406 | 11,421 | 11,421 | 11,279 | 11,246 | 11,418 | 11,523 | 11,613 | 11,728 | 11,557 | 11,757 | 11,586 | 11,644 | 11,759 | 11,560 | 11,467 | 11,474 | 11,546 | 11,522 | 11,622 | 11,892 | 12,039 | 12,067 | 12,078 | 12,191 | 12,343 | 12,056 | 12,194 | 12,240 | 12,358 | 12,129 | |
| EATON VANCE Index: Bloomberg Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,001,349 | 996,352 | 985,899 | 949,129 | 960,272 | 966,603 | 973,315 | 975,428 | 982,505 | 998,099 | 994,519 | 1,002,565 | 1,010,195 | 1,005,059 | 1,007,512 | 1,002,117 | 1,012,591 | 1,000,670 | 997,680 | 1,001,363 | 997,789 | 1,009,215 | 1,010,076 | 1,012,527 | 1,015,127 | 1,008,555 | 1,002,345 | 1,013,439 | 1,025,573 | 1,033,326 | 1,038,858 | 1,055,280 | 1,059,246 | 1,073,849 | 1,077,815 | 1,086,501 | 1,103,639 | 1,094,792 | 1,096,754 | 1,099,497 | 1,102,854 | 1,122,668 | 1,137,146 | 1,095,898 | 1,082,145 | 1,116,569 | 1,125,759 | 1,144,719 | 1,139,348 | 1,139,590 | 1,136,167 | 1,153,312 | 1,160,338 | 1,167,732 | 1,149,178 | 1,156,266 | 1,165,964 | 1,169,443 | 1,172,654 | 1,182,379 | 1,178,040 | 1,169,539 | 1,166,119 | 1,176,046 | 1,177,943 | 1,145,700 | 1,141,595 | 1,104,588 | 1,074,036 | 1,089,990 | 1,072,138 | 1,100,466 | 1,076,347 | 1,035,037 | 1,026,429 | 1,074,438 | 1,077,515 | 1,108,466 | 1,083,402 | 1,107,440 | 1,104,910 | 1,095,335 | 1,106,307 | 1,110,684 | 1,094,694 | 1,062,610 | 1,053,567 | 1,120,449 | 1,146,491 | 1,140,635 | 1,142,100 | 1,142,064 | 1,127,920 | 1,124,611 | 1,141,849 | 1,152,257 | 1,161,344 | 1,172,822 | 1,155,721 | 1,175,685 | 1,158,569 | 1,164,376 | 1,175,920 | 1,155,992 | 1,146,678 | 1,147,415 | 1,154,558 | 1,152,226 | 1,162,241 | 1,189,156 | 1,203,905 | 1,206,666 | 1,207,753 | 1,219,087 | 1,234,281 | 1,205,613 | 1,219,418 | 1,223,971 | 1,235,768 | 1,212,892 | |
| EATON VANCE Index: Bloomberg Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 10,013 | 9,964 | 9,859 | 9,491 | 9,603 | 9,666 | 9,733 | 9,754 | 9,825 | 9,981 | 9,945 | 10,026 | 10,102 | 10,051 | 10,075 | 10,021 | 10,126 | 10,007 | 9,977 | 10,014 | 9,978 | 10,092 | 10,101 | 10,125 | 10,151 | 10,086 | 10,023 | 10,134 | 10,256 | 10,333 | 10,389 | 10,553 | 10,592 | 10,738 | 10,778 | 10,865 | 11,036 | 10,948 | 10,968 | 10,995 | 11,029 | 11,227 | 11,371 | 10,959 | 10,821 | 11,166 | 11,258 | 11,447 | 11,393 | 11,396 | 11,362 | 11,533 | 11,603 | 11,677 | 11,492 | 11,563 | 11,660 | 11,694 | 11,727 | 11,824 | 11,780 | 11,695 | 11,661 | 11,760 | 11,779 | 11,457 | 11,416 | 11,046 | 10,740 | 10,900 | 10,721 | 11,005 | 10,763 | 10,350 | 10,264 | 10,744 | 10,775 | 11,085 | 10,834 | 11,074 | 11,049 | 10,953 | 11,063 | 11,107 | 10,947 | 10,626 | 10,536 | 11,204 | 11,465 | 11,406 | 11,421 | 11,421 | 11,279 | 11,246 | 11,418 | 11,523 | 11,613 | 11,728 | 11,557 | 11,757 | 11,586 | 11,644 | 11,759 | 11,560 | 11,467 | 11,474 | 11,546 | 11,522 | 11,622 | 11,892 | 12,039 | 12,067 | 12,078 | 12,191 | 12,343 | 12,056 | 12,194 | 12,240 | 12,358 | 12,129 | |
| EATON VANCE Index: Bloomberg Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 10,013 | 9,964 | 9,859 | 9,491 | 9,603 | 9,666 | 9,733 | 9,754 | 9,825 | 9,981 | 9,945 | 10,026 | 10,102 | 10,051 | 10,075 | 10,021 | 10,126 | 10,007 | 9,977 | 10,014 | 9,978 | 10,092 | 10,101 | 10,125 | 10,151 | 10,086 | 10,023 | 10,134 | 10,256 | 10,333 | 10,389 | 10,553 | 10,592 | 10,738 | 10,778 | 10,865 | 11,036 | 10,948 | 10,968 | 10,995 | 11,029 | 11,227 | 11,371 | 10,959 | 10,821 | 11,166 | 11,258 | 11,447 | 11,393 | 11,396 | 11,362 | 11,533 | 11,603 | 11,677 | 11,492 | 11,563 | 11,660 | 11,694 | 11,727 | 11,824 | 11,780 | 11,695 | 11,661 | 11,760 | 11,779 | 11,457 | 11,416 | 11,046 | 10,740 | 10,900 | 10,721 | 11,005 | 10,763 | 10,350 | 10,264 | 10,744 | 10,775 | 11,085 | 10,834 | 11,074 | 11,049 | 10,953 | 11,063 | 11,107 | 10,947 | 10,626 | 10,536 | 11,204 | 11,465 | 11,406 | 11,421 | 11,421 | 11,279 | 11,246 | 11,418 | 11,523 | 11,613 | 11,728 | 11,557 | 11,757 | 11,586 | 11,644 | 11,759 | 11,560 | 11,467 | 11,474 | 11,546 | 11,522 | 11,622 | 11,892 | 12,039 | 12,067 | 12,078 | 12,191 | 12,343 | 12,056 | 12,194 | 12,240 | 12,358 | 12,129 | |
| EATON VANCE Index: Bloomberg Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,001,349 | 996,352 | 985,899 | 949,129 | 960,272 | 966,603 | 973,315 | 975,428 | 982,505 | 998,099 | 994,519 | 1,002,565 | 1,010,195 | 1,005,059 | 1,007,512 | 1,002,117 | 1,012,591 | 1,000,670 | 997,680 | 1,001,363 | 997,789 | 1,009,215 | 1,010,076 | 1,012,527 | 1,015,127 | 1,008,555 | 1,002,345 | 1,013,439 | 1,025,573 | 1,033,326 | 1,038,858 | 1,055,280 | 1,059,246 | 1,073,849 | 1,077,815 | 1,086,501 | 1,103,639 | 1,094,792 | 1,096,754 | 1,099,497 | 1,102,854 | 1,122,668 | 1,137,146 | 1,095,898 | 1,082,145 | 1,116,569 | 1,125,759 | 1,144,719 | 1,139,348 | 1,139,590 | 1,136,167 | 1,153,312 | 1,160,338 | 1,167,732 | 1,149,178 | 1,156,266 | 1,165,964 | 1,169,443 | 1,172,654 | 1,182,379 | 1,178,040 | 1,169,539 | 1,166,119 | 1,176,046 | 1,177,943 | 1,145,700 | 1,141,595 | 1,104,588 | 1,074,036 | 1,089,990 | 1,072,138 | 1,100,466 | 1,076,347 | 1,035,037 | 1,026,429 | 1,074,438 | 1,077,515 | 1,108,466 | 1,083,402 | 1,107,440 | 1,104,910 | 1,095,335 | 1,106,307 | 1,110,684 | 1,094,694 | 1,062,610 | 1,053,567 | 1,120,449 | 1,146,491 | 1,140,635 | 1,142,100 | 1,142,064 | 1,127,920 | 1,124,611 | 1,141,849 | 1,152,257 | 1,161,344 | 1,172,822 | 1,155,721 | 1,175,685 | 1,158,569 | 1,164,376 | 1,175,920 | 1,155,992 | 1,146,678 | 1,147,415 | 1,154,558 | 1,152,226 | 1,162,241 | 1,189,156 | 1,203,905 | 1,206,666 | 1,207,753 | 1,219,087 | 1,234,281 | 1,205,613 | 1,219,418 | 1,223,971 | 1,235,768 | 1,212,892 | |
| EATON VANCE Index: Bloomberg Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 10,013 | 9,964 | 9,859 | 9,491 | 9,603 | 9,666 | 9,733 | 9,754 | 9,825 | 9,981 | 9,945 | 10,026 | 10,102 | 10,051 | 10,075 | 10,021 | 10,126 | 10,007 | 9,977 | 10,014 | 9,978 | 10,092 | 10,101 | 10,125 | 10,151 | 10,086 | 10,023 | 10,134 | 10,256 | 10,333 | 10,389 | 10,553 | 10,592 | 10,738 | 10,778 | 10,865 | 11,036 | 10,948 | 10,968 | 10,995 | 11,029 | 11,227 | 11,371 | 10,959 | 10,821 | 11,166 | 11,258 | 11,447 | 11,393 | 11,396 | 11,362 | 11,533 | 11,603 | 11,677 | 11,492 | 11,563 | 11,660 | 11,694 | 11,727 | 11,824 | 11,780 | 11,695 | 11,661 | 11,760 | 11,779 | 11,457 | 11,416 | 11,046 | 10,740 | 10,900 | 10,721 | 11,005 | 10,763 | 10,350 | 10,264 | 10,744 | 10,775 | 11,085 | 10,834 | 11,074 | 11,049 | 10,953 | 11,063 | 11,107 | 10,947 | 10,626 | 10,536 | 11,204 | 11,465 | 11,406 | 11,421 | 11,421 | 11,279 | 11,246 | 11,418 | 11,523 | 11,613 | 11,728 | 11,557 | 11,757 | 11,586 | 11,644 | 11,759 | 11,560 | 11,467 | 11,474 | 11,546 | 11,522 | 11,622 | 11,892 | 12,039 | 12,067 | 12,078 | 12,191 | 12,343 | 12,056 | 12,194 | 12,240 | 12,358 | 12,129 | |
| EATON VANCE Index: Bloomberg Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 10,013 | 9,964 | 9,859 | 9,491 | 9,603 | 9,666 | 9,733 | 9,754 | 9,825 | 9,981 | 9,945 | 10,026 | 10,102 | 10,051 | 10,075 | 10,021 | 10,126 | 10,007 | 9,977 | 10,014 | 9,978 | 10,092 | 10,101 | 10,125 | 10,151 | 10,086 | 10,023 | 10,134 | 10,256 | 10,333 | 10,389 | 10,553 | 10,592 | 10,738 | 10,778 | 10,865 | 11,036 | 10,948 | 10,968 | 10,995 | 11,029 | 11,227 | 11,371 | 10,959 | 10,821 | 11,166 | 11,258 | 11,447 | 11,393 | 11,396 | 11,362 | 11,533 | 11,603 | 11,677 | 11,492 | 11,563 | 11,660 | 11,694 | 11,727 | 11,824 | 11,780 | 11,695 | 11,661 | 11,760 | 11,779 | 11,457 | 11,416 | 11,046 | 10,740 | 10,900 | 10,721 | 11,005 | 10,763 | 10,350 | 10,264 | 10,744 | 10,775 | 11,085 | 10,834 | 11,074 | 11,049 | 10,953 | 11,063 | 11,107 | 10,947 | 10,626 | 10,536 | 11,204 | 11,465 | 11,406 | 11,421 | 11,421 | 11,279 | 11,246 | 11,418 | 11,523 | 11,613 | 11,728 | 11,557 | 11,757 | 11,586 | 11,644 | 11,759 | 11,560 | 11,467 | 11,474 | 11,546 | 11,522 | 11,622 | 11,892 | 12,039 | 12,067 | 12,078 | 12,191 | 12,343 | 12,056 | 12,194 | 12,240 | 12,358 | 12,129 | |
| EATON VANCE Index: Bloomberg Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,001,349 | 996,352 | 985,899 | 949,129 | 960,272 | 966,603 | 973,315 | 975,428 | 982,505 | 998,099 | 994,519 | 1,002,565 | 1,010,195 | 1,005,059 | 1,007,512 | 1,002,117 | 1,012,591 | 1,000,670 | 997,680 | 1,001,363 | 997,789 | 1,009,215 | 1,010,076 | 1,012,527 | 1,015,127 | 1,008,555 | 1,002,345 | 1,013,439 | 1,025,573 | 1,033,326 | 1,038,858 | 1,055,280 | 1,059,246 | 1,073,849 | 1,077,815 | 1,086,501 | 1,103,639 | 1,094,792 | 1,096,754 | 1,099,497 | 1,102,854 | 1,122,668 | 1,137,146 | 1,095,898 | 1,082,145 | 1,116,569 | 1,125,759 | 1,144,719 | 1,139,348 | 1,139,590 | 1,136,167 | 1,153,312 | 1,160,338 | 1,167,732 | 1,149,178 | 1,156,266 | 1,165,964 | 1,169,443 | 1,172,654 | 1,182,379 | 1,178,040 | 1,169,539 | 1,166,119 | 1,176,046 | 1,177,943 | 1,145,700 | 1,141,595 | 1,104,588 | 1,074,036 | 1,089,990 | 1,072,138 | 1,100,466 | 1,076,347 | 1,035,037 | 1,026,429 | 1,074,438 | 1,077,515 | 1,108,466 | 1,083,402 | 1,107,440 | 1,104,910 | 1,095,335 | 1,106,307 | 1,110,684 | 1,094,694 | 1,062,610 | 1,053,567 | 1,120,449 | 1,146,491 | 1,140,635 | 1,142,100 | 1,142,064 | 1,127,920 | 1,124,611 | 1,141,849 | 1,152,257 | 1,161,344 | 1,172,822 | 1,155,721 | 1,175,685 | 1,158,569 | 1,164,376 | 1,175,920 | 1,155,992 | 1,146,678 | 1,147,415 | 1,154,558 | 1,152,226 | 1,162,241 | 1,189,156 | 1,203,905 | 1,206,666 | 1,207,753 | 1,219,087 | 1,234,281 | 1,205,613 | 1,219,418 | 1,223,971 | 1,235,768 | 1,212,892 | |
| EATON VANCE Index: Bloomberg Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 10,013 | 9,964 | 9,859 | 9,491 | 9,603 | 9,666 | 9,733 | 9,754 | 9,825 | 9,981 | 9,945 | 10,026 | 10,102 | 10,051 | 10,075 | 10,021 | 10,126 | 10,007 | 9,977 | 10,014 | 9,978 | 10,092 | 10,101 | 10,125 | 10,151 | 10,086 | 10,023 | 10,134 | 10,256 | 10,333 | 10,389 | 10,553 | 10,592 | 10,738 | 10,778 | 10,865 | 11,036 | 10,948 | 10,968 | 10,995 | 11,029 | 11,227 | 11,371 | 10,959 | 10,821 | 11,166 | 11,258 | 11,447 | 11,393 | 11,396 | 11,362 | 11,533 | 11,603 | 11,677 | 11,492 | 11,563 | 11,660 | 11,694 | 11,727 | 11,824 | 11,780 | 11,695 | 11,661 | 11,760 | 11,779 | 11,457 | 11,416 | 11,046 | 10,740 | 10,900 | 10,721 | 11,005 | 10,763 | 10,350 | 10,264 | 10,744 | 10,775 | 11,085 | 10,834 | 11,074 | 11,049 | 10,953 | 11,063 | 11,107 | 10,947 | 10,626 | 10,536 | 11,204 | 11,465 | 11,406 | 11,421 | 11,421 | 11,279 | 11,246 | 11,418 | 11,523 | 11,613 | 11,728 | 11,557 | 11,757 | 11,586 | 11,644 | 11,759 | 11,560 | 11,467 | 11,474 | 11,546 | 11,522 | 11,622 | 11,892 | 12,039 | 12,067 | 12,078 | 12,191 | 12,343 | 12,056 | 12,194 | 12,240 | 12,358 | 12,129 | |
| EATON VANCE Index: Bloomberg Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 10,013 | 9,964 | 9,859 | 9,491 | 9,603 | 9,666 | 9,733 | 9,754 | 9,825 | 9,981 | 9,945 | 10,026 | 10,102 | 10,051 | 10,075 | 10,021 | 10,126 | 10,007 | 9,977 | 10,014 | 9,978 | 10,092 | 10,101 | 10,125 | 10,151 | 10,086 | 10,023 | 10,134 | 10,256 | 10,333 | 10,389 | 10,553 | 10,592 | 10,738 | 10,778 | 10,865 | 11,036 | 10,948 | 10,968 | 10,995 | 11,029 | 11,227 | 11,371 | 10,959 | 10,821 | 11,166 | 11,258 | 11,447 | 11,393 | 11,396 | 11,362 | 11,533 | 11,603 | 11,677 | 11,492 | 11,563 | 11,660 | 11,694 | 11,727 | 11,824 | 11,780 | 11,695 | 11,661 | 11,760 | 11,779 | 11,457 | 11,416 | 11,046 | 10,740 | 10,900 | 10,721 | 11,005 | 10,763 | 10,350 | 10,264 | 10,744 | 10,775 | 11,085 | 10,834 | 11,074 | 11,049 | 10,953 | 11,063 | 11,107 | 10,947 | 10,626 | 10,536 | 11,204 | 11,465 | 11,406 | 11,421 | 11,421 | 11,279 | 11,246 | 11,418 | 11,523 | 11,613 | 11,728 | 11,557 | 11,757 | 11,586 | 11,644 | 11,759 | 11,560 | 11,467 | 11,474 | 11,546 | 11,522 | 11,622 | 11,892 | 12,039 | 12,067 | 12,078 | 12,191 | 12,343 | 12,056 | 12,194 | 12,240 | 12,358 | 12,129 | |
| EATON VANCE Index: Bloomberg Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,001,349 | 996,352 | 985,899 | 949,129 | 960,272 | 966,603 | 973,315 | 975,428 | 982,505 | 998,099 | 994,519 | 1,002,565 | 1,010,195 | 1,005,059 | 1,007,512 | 1,002,117 | 1,012,591 | 1,000,670 | 997,680 | 1,001,363 | 997,789 | 1,009,215 | 1,010,076 | 1,012,527 | 1,015,127 | 1,008,555 | 1,002,345 | 1,013,439 | 1,025,573 | 1,033,326 | 1,038,858 | 1,055,280 | 1,059,246 | 1,073,849 | 1,077,815 | 1,086,501 | 1,103,639 | 1,094,792 | 1,096,754 | 1,099,497 | 1,102,854 | 1,122,668 | 1,137,146 | 1,095,898 | 1,082,145 | 1,116,569 | 1,125,759 | 1,144,719 | 1,139,348 | 1,139,590 | 1,136,167 | 1,153,312 | 1,160,338 | 1,167,732 | 1,149,178 | 1,156,266 | 1,165,964 | 1,169,443 | 1,172,654 | 1,182,379 | 1,178,040 | 1,169,539 | 1,166,119 | 1,176,046 | 1,177,943 | 1,145,700 | 1,141,595 | 1,104,588 | 1,074,036 | 1,089,990 | 1,072,138 | 1,100,466 | 1,076,347 | 1,035,037 | 1,026,429 | 1,074,438 | 1,077,515 | 1,108,466 | 1,083,402 | 1,107,440 | 1,104,910 | 1,095,335 | 1,106,307 | 1,110,684 | 1,094,694 | 1,062,610 | 1,053,567 | 1,120,449 | 1,146,491 | 1,140,635 | 1,142,100 | 1,142,064 | 1,127,920 | 1,124,611 | 1,141,849 | 1,152,257 | 1,161,344 | 1,172,822 | 1,155,721 | 1,175,685 | 1,158,569 | 1,164,376 | 1,175,920 | 1,155,992 | 1,146,678 | 1,147,415 | 1,154,558 | 1,152,226 | 1,162,241 | 1,189,156 | 1,203,905 | 1,206,666 | 1,207,753 | 1,219,087 | 1,234,281 | 1,205,613 | 1,219,418 | 1,223,971 | 1,235,768 | 1,212,892 | |
| EATON VANCE Index: Bloomberg Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 10,013 | 9,964 | 9,859 | 9,491 | 9,603 | 9,666 | 9,733 | 9,754 | 9,825 | 9,981 | 9,945 | 10,026 | 10,102 | 10,051 | 10,075 | 10,021 | 10,126 | 10,007 | 9,977 | 10,014 | 9,978 | 10,092 | 10,101 | 10,125 | 10,151 | 10,086 | 10,023 | 10,134 | 10,256 | 10,333 | 10,389 | 10,553 | 10,592 | 10,738 | 10,778 | 10,865 | 11,036 | 10,948 | 10,968 | 10,995 | 11,029 | 11,227 | 11,371 | 10,959 | 10,821 | 11,166 | 11,258 | 11,447 | 11,393 | 11,396 | 11,362 | 11,533 | 11,603 | 11,677 | 11,492 | 11,563 | 11,660 | 11,694 | 11,727 | 11,824 | 11,780 | 11,695 | 11,661 | 11,760 | 11,779 | 11,457 | 11,416 | 11,046 | 10,740 | 10,900 | 10,721 | 11,005 | 10,763 | 10,350 | 10,264 | 10,744 | 10,775 | 11,085 | 10,834 | 11,074 | 11,049 | 10,953 | 11,063 | 11,107 | 10,947 | 10,626 | 10,536 | 11,204 | 11,465 | 11,406 | 11,421 | 11,421 | 11,279 | 11,246 | 11,418 | 11,523 | 11,613 | 11,728 | 11,557 | 11,757 | 11,586 | 11,644 | 11,759 | 11,560 | 11,467 | 11,474 | 11,546 | 11,522 | 11,622 | 11,892 | 12,039 | 12,067 | 12,078 | 12,191 | 12,343 | 12,056 | 12,194 | 12,240 | 12,358 | 12,129 | |
| EATON VANCE Index: Bloomberg Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 10,013 | 9,964 | 9,859 | 9,491 | 9,603 | 9,666 | 9,733 | 9,754 | 9,825 | 9,981 | 9,945 | 10,026 | 10,102 | 10,051 | 10,075 | 10,021 | 10,126 | 10,007 | 9,977 | 10,014 | 9,978 | 10,092 | 10,101 | 10,125 | 10,151 | 10,086 | 10,023 | 10,134 | 10,256 | 10,333 | 10,389 | 10,553 | 10,592 | 10,738 | 10,778 | 10,865 | 11,036 | 10,948 | 10,968 | 10,995 | 11,029 | 11,227 | 11,371 | 10,959 | 10,821 | 11,166 | 11,258 | 11,447 | 11,393 | 11,396 | 11,362 | 11,533 | 11,603 | 11,677 | 11,492 | 11,563 | 11,660 | 11,694 | 11,727 | 11,824 | 11,780 | 11,695 | 11,661 | 11,760 | 11,779 | 11,457 | 11,416 | 11,046 | 10,740 | 10,900 | 10,721 | 11,005 | 10,763 | 10,350 | 10,264 | 10,744 | 10,775 | 11,085 | 10,834 | 11,074 | 11,049 | 10,953 | 11,063 | 11,107 | 10,947 | 10,626 | 10,536 | 11,204 | 11,465 | 11,406 | 11,421 | 11,421 | 11,279 | 11,246 | 11,418 | 11,523 | 11,613 | 11,728 | 11,557 | 11,757 | 11,586 | 11,644 | 11,759 | 11,560 | 11,467 | 11,474 | 11,546 | 11,522 | 11,622 | 11,892 | 12,039 | 12,067 | 12,078 | 12,191 | 12,343 | 12,056 | 12,194 | 12,240 | 12,358 | 12,129 | |
| EATON VANCE Index: Bloomberg Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,001,349 | 996,352 | 985,899 | 949,129 | 960,272 | 966,603 | 973,315 | 975,428 | 982,505 | 998,099 | 994,519 | 1,002,565 | 1,010,195 | 1,005,059 | 1,007,512 | 1,002,117 | 1,012,591 | 1,000,670 | 997,680 | 1,001,363 | 997,789 | 1,009,215 | 1,010,076 | 1,012,527 | 1,015,127 | 1,008,555 | 1,002,345 | 1,013,439 | 1,025,573 | 1,033,326 | 1,038,858 | 1,055,280 | 1,059,246 | 1,073,849 | 1,077,815 | 1,086,501 | 1,103,639 | 1,094,792 | 1,096,754 | 1,099,497 | 1,102,854 | 1,122,668 | 1,137,146 | 1,095,898 | 1,082,145 | 1,116,569 | 1,125,759 | 1,144,719 | 1,139,348 | 1,139,590 | 1,136,167 | 1,153,312 | 1,160,338 | 1,167,732 | 1,149,178 | 1,156,266 | 1,165,964 | 1,169,443 | 1,172,654 | 1,182,379 | 1,178,040 | 1,169,539 | 1,166,119 | 1,176,046 | 1,177,943 | 1,145,700 | 1,141,595 | 1,104,588 | 1,074,036 | 1,089,990 | 1,072,138 | 1,100,466 | 1,076,347 | 1,035,037 | 1,026,429 | 1,074,438 | 1,077,515 | 1,108,466 | 1,083,402 | 1,107,440 | 1,104,910 | 1,095,335 | 1,106,307 | 1,110,684 | 1,094,694 | 1,062,610 | 1,053,567 | 1,120,449 | 1,146,491 | 1,140,635 | 1,142,100 | 1,142,064 | 1,127,920 | 1,124,611 | 1,141,849 | 1,152,257 | 1,161,344 | 1,172,822 | 1,155,721 | 1,175,685 | 1,158,569 | 1,164,376 | 1,175,920 | 1,155,992 | 1,146,678 | 1,147,415 | 1,154,558 | 1,152,226 | 1,162,241 | 1,189,156 | 1,203,905 | 1,206,666 | 1,207,753 | 1,219,087 | 1,234,281 | 1,205,613 | 1,219,418 | 1,223,971 | 1,235,768 | 1,212,892 | |
| EATON VANCE Index: Bloomberg Arizona Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Arizona Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 9,997 | 9,952 | 9,866 | 9,535 | 9,638 | 9,699 | 9,775 | 9,791 | 9,872 | 10,019 | 9,976 | 10,045 | 10,113 | 10,052 | 10,079 | 10,012 | 10,121 | 10,000 | 9,967 | 10,008 | 9,972 | 10,077 | 10,092 | 10,108 | 10,130 | 10,066 | 10,012 | 10,119 | 10,232 | 10,310 | 10,361 | 10,518 | 10,556 | 10,687 | 10,724 | 10,814 | 10,975 | 10,870 | 10,900 | 10,924 | 10,956 | 11,151 | 11,299 | 10,849 | 10,801 | 11,135 | 11,205 | 11,363 | 11,314 | 11,318 | 11,284 | 11,452 | 11,510 | 11,561 | 11,396 | 11,464 | 11,547 | 11,575 | 11,593 | 11,690 | 11,660 | 11,575 | 11,548 | 11,638 | 11,652 | 11,344 | 11,313 | 10,953 | 10,637 | 10,787 | 10,622 | 10,887 | 10,666 | 10,251 | 10,164 | 10,607 | 10,656 | 10,934 | 10,694 | 10,923 | 10,888 | 10,798 | 10,873 | 10,932 | 10,784 | 10,492 | 10,417 | 11,034 | 11,300 | 11,231 | 11,255 | 11,244 | 11,122 | 11,107 | 11,275 | 11,365 | 11,454 | 11,552 | 11,396 | 11,584 | 11,423 | 11,487 | 11,600 | 11,426 | 11,341 | 11,344 | 11,412 | 11,404 | 11,502 | 11,727 | 11,855 | 11,888 | 11,900 | 12,003 | 12,156 | 11,891 | 12,031 | 12,066 | 12,167 | 11,956 | |
| EATON VANCE Index: Bloomberg Arizona Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Arizona Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 9,997 | 9,952 | 9,866 | 9,535 | 9,638 | 9,699 | 9,775 | 9,791 | 9,872 | 10,019 | 9,976 | 10,045 | 10,113 | 10,052 | 10,079 | 10,012 | 10,121 | 10,000 | 9,967 | 10,008 | 9,972 | 10,077 | 10,092 | 10,108 | 10,130 | 10,066 | 10,012 | 10,119 | 10,232 | 10,310 | 10,361 | 10,518 | 10,556 | 10,687 | 10,724 | 10,814 | 10,975 | 10,870 | 10,900 | 10,924 | 10,956 | 11,151 | 11,299 | 10,849 | 10,801 | 11,135 | 11,205 | 11,363 | 11,314 | 11,318 | 11,284 | 11,452 | 11,510 | 11,561 | 11,396 | 11,464 | 11,547 | 11,575 | 11,593 | 11,690 | 11,660 | 11,575 | 11,548 | 11,638 | 11,652 | 11,344 | 11,313 | 10,953 | 10,637 | 10,787 | 10,622 | 10,887 | 10,666 | 10,251 | 10,164 | 10,607 | 10,656 | 10,934 | 10,694 | 10,923 | 10,888 | 10,798 | 10,873 | 10,932 | 10,784 | 10,492 | 10,417 | 11,034 | 11,300 | 11,231 | 11,255 | 11,244 | 11,122 | 11,107 | 11,275 | 11,365 | 11,454 | 11,552 | 11,396 | 11,584 | 11,423 | 11,487 | 11,600 | 11,426 | 11,341 | 11,344 | 11,412 | 11,404 | 11,502 | 11,727 | 11,855 | 11,888 | 11,900 | 12,003 | 12,156 | 11,891 | 12,031 | 12,066 | 12,167 | 11,956 | |
| EATON VANCE Index: Bloomberg Arizona Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Arizona Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 999,654 | 995,210 | 986,569 | 953,534 | 963,833 | 969,944 | 977,482 | 979,082 | 987,228 | 1,001,874 | 997,609 | 1,004,524 | 1,011,344 | 1,005,165 | 1,007,885 | 1,001,199 | 1,012,139 | 999,985 | 996,732 | 1,000,789 | 997,223 | 1,007,727 | 1,009,222 | 1,010,808 | 1,012,956 | 1,006,554 | 1,001,208 | 1,011,933 | 1,023,152 | 1,030,994 | 1,036,109 | 1,051,779 | 1,055,582 | 1,068,716 | 1,072,356 | 1,081,358 | 1,097,477 | 1,087,037 | 1,089,969 | 1,092,437 | 1,095,575 | 1,115,051 | 1,129,941 | 1,084,918 | 1,080,091 | 1,113,478 | 1,120,505 | 1,136,311 | 1,131,431 | 1,131,766 | 1,128,409 | 1,145,159 | 1,151,029 | 1,156,136 | 1,139,604 | 1,146,432 | 1,154,679 | 1,157,537 | 1,159,312 | 1,169,009 | 1,165,999 | 1,157,507 | 1,154,753 | 1,163,800 | 1,165,176 | 1,134,441 | 1,131,304 | 1,095,344 | 1,063,717 | 1,078,661 | 1,062,152 | 1,088,742 | 1,066,590 | 1,025,082 | 1,016,382 | 1,060,714 | 1,065,592 | 1,093,352 | 1,069,439 | 1,092,321 | 1,088,769 | 1,079,750 | 1,087,338 | 1,093,233 | 1,078,421 | 1,049,189 | 1,041,681 | 1,103,435 | 1,129,961 | 1,123,114 | 1,125,456 | 1,124,361 | 1,112,231 | 1,110,658 | 1,127,507 | 1,136,455 | 1,145,425 | 1,155,163 | 1,139,554 | 1,158,385 | 1,142,279 | 1,148,681 | 1,159,963 | 1,142,586 | 1,134,126 | 1,134,432 | 1,141,234 | 1,140,399 | 1,150,172 | 1,172,731 | 1,185,491 | 1,188,807 | 1,190,049 | 1,200,316 | 1,215,589 | 1,189,056 | 1,203,089 | 1,206,604 | 1,216,736 | 1,195,616 | |
| EATON VANCE Index: Bloomberg Connecticut Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Connecticut Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 9,998 | 9,943 | 9,831 | 9,503 | 9,592 | 9,650 | 9,711 | 9,706 | 9,793 | 9,904 | 9,827 | 9,895 | 9,978 | 9,925 | 9,959 | 9,903 | 9,965 | 9,876 | 9,854 | 9,863 | 9,846 | 9,950 | 9,963 | 10,007 | 10,025 | 9,975 | 9,935 | 10,036 | 10,148 | 10,235 | 10,300 | 10,467 | 10,514 | 10,655 | 10,708 | 10,812 | 10,947 | 10,853 | 10,887 | 10,914 | 10,944 | 11,126 | 11,238 | 10,894 | 10,748 | 11,086 | 11,195 | 11,386 | 11,356 | 11,371 | 11,350 | 11,489 | 11,527 | 11,575 | 11,422 | 11,487 | 11,551 | 11,586 | 11,602 | 11,705 | 11,665 | 11,601 | 11,560 | 11,631 | 11,642 | 11,356 | 11,321 | 10,988 | 10,747 | 10,899 | 10,796 | 11,058 | 10,845 | 10,509 | 10,460 | 10,858 | 10,903 | 11,158 | 10,943 | 11,180 | 11,126 | 11,029 | 11,122 | 11,147 | 11,040 | 10,763 | 10,723 | 11,272 | 11,495 | 11,440 | 11,456 | 11,452 | 11,324 | 11,246 | 11,409 | 11,522 | 11,625 | 11,726 | 11,556 | 11,701 | 11,578 | 11,668 | 11,778 | 11,627 | 11,552 | 11,609 | 11,721 | 11,733 | 11,838 | 11,993 | 12,095 | 12,132 | 12,152 | 12,280 | 12,399 | 12,139 | 12,226 | 12,268 | 12,355 | 12,162 | |
| EATON VANCE Index: Bloomberg Connecticut Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Connecticut Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 9,998 | 9,943 | 9,831 | 9,503 | 9,592 | 9,650 | 9,711 | 9,706 | 9,793 | 9,904 | 9,827 | 9,895 | 9,978 | 9,925 | 9,959 | 9,903 | 9,965 | 9,876 | 9,854 | 9,863 | 9,846 | 9,950 | 9,963 | 10,007 | 10,025 | 9,975 | 9,935 | 10,036 | 10,148 | 10,235 | 10,300 | 10,467 | 10,514 | 10,655 | 10,708 | 10,812 | 10,947 | 10,853 | 10,887 | 10,914 | 10,944 | 11,126 | 11,238 | 10,894 | 10,748 | 11,086 | 11,195 | 11,386 | 11,356 | 11,371 | 11,350 | 11,489 | 11,527 | 11,575 | 11,422 | 11,487 | 11,551 | 11,586 | 11,602 | 11,705 | 11,665 | 11,601 | 11,560 | 11,631 | 11,642 | 11,356 | 11,321 | 10,988 | 10,747 | 10,899 | 10,796 | 11,058 | 10,845 | 10,509 | 10,460 | 10,858 | 10,903 | 11,158 | 10,943 | 11,180 | 11,126 | 11,029 | 11,122 | 11,147 | 11,040 | 10,763 | 10,723 | 11,272 | 11,495 | 11,440 | 11,456 | 11,452 | 11,324 | 11,246 | 11,409 | 11,522 | 11,625 | 11,726 | 11,556 | 11,701 | 11,578 | 11,668 | 11,778 | 11,627 | 11,552 | 11,609 | 11,721 | 11,733 | 11,838 | 11,993 | 12,095 | 12,132 | 12,152 | 12,280 | 12,399 | 12,139 | 12,226 | 12,268 | 12,355 | 12,162 | |
| EATON VANCE Index: Bloomberg Connecticut Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Connecticut Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 999,844 | 994,331 | 983,103 | 950,302 | 959,192 | 965,030 | 971,126 | 970,647 | 979,347 | 990,353 | 982,695 | 989,503 | 997,828 | 992,538 | 995,912 | 990,266 | 996,490 | 987,635 | 985,358 | 986,303 | 984,552 | 994,973 | 996,296 | 1,000,669 | 1,002,531 | 997,482 | 993,497 | 1,003,604 | 1,014,794 | 1,023,474 | 1,030,047 | 1,046,688 | 1,051,350 | 1,065,472 | 1,070,765 | 1,081,183 | 1,094,668 | 1,085,301 | 1,088,726 | 1,091,430 | 1,094,367 | 1,112,641 | 1,123,794 | 1,089,390 | 1,074,752 | 1,108,565 | 1,119,500 | 1,138,550 | 1,135,596 | 1,137,136 | 1,135,024 | 1,148,854 | 1,152,712 | 1,157,499 | 1,142,171 | 1,148,690 | 1,155,054 | 1,158,603 | 1,160,234 | 1,170,466 | 1,166,534 | 1,160,079 | 1,156,036 | 1,163,118 | 1,164,153 | 1,135,579 | 1,132,108 | 1,098,846 | 1,074,715 | 1,089,854 | 1,079,610 | 1,105,823 | 1,084,543 | 1,050,935 | 1,045,959 | 1,085,838 | 1,090,346 | 1,115,794 | 1,094,281 | 1,118,020 | 1,112,586 | 1,102,886 | 1,112,232 | 1,114,738 | 1,103,959 | 1,076,293 | 1,072,322 | 1,127,205 | 1,149,519 | 1,143,964 | 1,145,632 | 1,145,168 | 1,132,434 | 1,124,632 | 1,140,876 | 1,152,239 | 1,162,527 | 1,172,620 | 1,155,578 | 1,170,135 | 1,157,811 | 1,166,771 | 1,177,777 | 1,162,734 | 1,155,163 | 1,160,906 | 1,172,097 | 1,173,308 | 1,183,771 | 1,199,342 | 1,209,494 | 1,213,172 | 1,215,204 | 1,227,995 | 1,239,935 | 1,213,897 | 1,222,621 | 1,226,774 | 1,235,528 | 1,216,248 | |
| EATON VANCE Index: Bloomberg Minnesota Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Minnesota Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 10,005 | 9,950 | 9,867 | 9,509 | 9,619 | 9,687 | 9,772 | 9,791 | 9,859 | 9,979 | 9,939 | 10,017 | 10,069 | 10,016 | 10,035 | 9,956 | 10,055 | 9,951 | 9,927 | 9,951 | 9,923 | 10,011 | 10,021 | 10,048 | 10,060 | 9,997 | 9,948 | 10,060 | 10,193 | 10,271 | 10,324 | 10,467 | 10,488 | 10,616 | 10,661 | 10,750 | 10,898 | 10,803 | 10,824 | 10,848 | 10,872 | 11,054 | 11,169 | 10,889 | 10,775 | 11,118 | 11,157 | 11,311 | 11,255 | 11,264 | 11,238 | 11,381 | 11,429 | 11,470 | 11,314 | 11,368 | 11,456 | 11,470 | 11,490 | 11,586 | 11,539 | 11,462 | 11,420 | 11,508 | 11,526 | 11,232 | 11,201 | 10,871 | 10,603 | 10,737 | 10,588 | 10,843 | 10,640 | 10,272 | 10,185 | 10,636 | 10,677 | 10,946 | 10,727 | 10,953 | 10,910 | 10,794 | 10,851 | 10,911 | 10,775 | 10,440 | 10,378 | 11,008 | 11,220 | 11,155 | 11,181 | 11,161 | 11,029 | 10,963 | 11,142 | 11,259 | 11,346 | 11,452 | 11,282 | 11,457 | 11,300 | 11,364 | 11,484 | 11,300 | 11,217 | 11,251 | 11,310 | 11,312 | 11,407 | 11,640 | 11,762 | 11,796 | 11,823 | 11,944 | 12,064 | 11,793 | 11,922 | 11,949 | 12,039 | 11,825 | |
| EATON VANCE Index: Bloomberg Minnesota Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Minnesota Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 10,005 | 9,950 | 9,867 | 9,509 | 9,619 | 9,687 | 9,772 | 9,791 | 9,859 | 9,979 | 9,939 | 10,017 | 10,069 | 10,016 | 10,035 | 9,956 | 10,055 | 9,951 | 9,927 | 9,951 | 9,923 | 10,011 | 10,021 | 10,048 | 10,060 | 9,997 | 9,948 | 10,060 | 10,193 | 10,271 | 10,324 | 10,467 | 10,488 | 10,616 | 10,661 | 10,750 | 10,898 | 10,803 | 10,824 | 10,848 | 10,872 | 11,054 | 11,169 | 10,889 | 10,775 | 11,118 | 11,157 | 11,311 | 11,255 | 11,264 | 11,238 | 11,381 | 11,429 | 11,470 | 11,314 | 11,368 | 11,456 | 11,470 | 11,490 | 11,586 | 11,539 | 11,462 | 11,420 | 11,508 | 11,526 | 11,232 | 11,201 | 10,871 | 10,603 | 10,737 | 10,588 | 10,843 | 10,640 | 10,272 | 10,185 | 10,636 | 10,677 | 10,946 | 10,727 | 10,953 | 10,910 | 10,794 | 10,851 | 10,911 | 10,775 | 10,440 | 10,378 | 11,008 | 11,220 | 11,155 | 11,181 | 11,161 | 11,029 | 10,963 | 11,142 | 11,259 | 11,346 | 11,452 | 11,282 | 11,457 | 11,300 | 11,364 | 11,484 | 11,300 | 11,217 | 11,251 | 11,310 | 11,312 | 11,407 | 11,640 | 11,762 | 11,796 | 11,823 | 11,944 | 12,064 | 11,793 | 11,922 | 11,949 | 12,039 | 11,825 | |
| EATON VANCE Index: Bloomberg Minnesota Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Minnesota Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,000,477 | 995,003 | 986,683 | 950,927 | 961,859 | 968,735 | 977,174 | 979,102 | 985,872 | 997,921 | 993,907 | 1,001,688 | 1,006,886 | 1,001,646 | 1,003,528 | 995,627 | 1,005,464 | 995,054 | 992,660 | 995,098 | 992,312 | 1,001,118 | 1,002,118 | 1,004,816 | 1,005,978 | 999,700 | 994,778 | 1,005,973 | 1,019,266 | 1,027,098 | 1,032,449 | 1,046,727 | 1,048,847 | 1,061,618 | 1,066,124 | 1,074,987 | 1,089,841 | 1,080,283 | 1,082,415 | 1,084,819 | 1,087,233 | 1,105,353 | 1,116,924 | 1,088,916 | 1,077,454 | 1,111,775 | 1,115,671 | 1,131,101 | 1,125,456 | 1,126,448 | 1,123,781 | 1,138,148 | 1,142,904 | 1,147,034 | 1,131,394 | 1,136,839 | 1,145,595 | 1,147,028 | 1,149,029 | 1,158,580 | 1,153,924 | 1,146,225 | 1,141,957 | 1,150,818 | 1,152,607 | 1,123,155 | 1,120,136 | 1,087,066 | 1,060,271 | 1,073,667 | 1,058,829 | 1,084,280 | 1,063,971 | 1,027,224 | 1,018,538 | 1,063,647 | 1,067,722 | 1,094,649 | 1,072,709 | 1,095,274 | 1,091,020 | 1,079,360 | 1,085,088 | 1,091,096 | 1,077,484 | 1,044,000 | 1,037,839 | 1,100,806 | 1,121,966 | 1,115,474 | 1,118,050 | 1,116,108 | 1,102,912 | 1,096,343 | 1,114,180 | 1,125,878 | 1,134,577 | 1,145,201 | 1,128,164 | 1,145,706 | 1,129,998 | 1,136,420 | 1,148,350 | 1,130,022 | 1,121,718 | 1,125,120 | 1,131,025 | 1,131,191 | 1,140,739 | 1,164,048 | 1,176,238 | 1,179,589 | 1,182,325 | 1,194,413 | 1,206,413 | 1,179,258 | 1,192,198 | 1,194,937 | 1,203,888 | 1,182,467 | |
| EATON VANCE Index: Bloomberg New Jersey Municipal Bond | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg New Jersey Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 10,062 | 10,021 | 9,891 | 9,437 | 9,502 | 9,566 | 9,657 | 9,673 | 9,724 | 9,912 | 9,879 | 9,979 | 10,133 | 10,167 | 10,201 | 10,171 | 10,278 | 10,158 | 10,130 | 10,172 | 10,149 | 10,267 | 10,295 | 10,364 | 10,397 | 10,330 | 10,250 | 10,357 | 10,497 | 10,587 | 10,653 | 10,856 | 10,899 | 11,095 | 11,150 | 11,266 | 11,471 | 11,357 | 11,371 | 11,411 | 11,461 | 11,694 | 11,862 | 11,056 | 10,807 | 11,080 | 11,380 | 11,741 | 11,752 | 11,730 | 11,688 | 11,942 | 12,103 | 12,275 | 12,087 | 12,164 | 12,295 | 12,342 | 12,405 | 12,535 | 12,500 | 12,409 | 12,336 | 12,448 | 12,480 | 12,105 | 12,032 | 11,627 | 11,280 | 11,449 | 11,281 | 11,616 | 11,366 | 10,900 | 10,807 | 11,344 | 11,364 | 11,742 | 11,486 | 11,766 | 11,736 | 11,656 | 11,773 | 11,842 | 11,686 | 11,369 | 11,267 | 11,957 | 12,241 | 12,189 | 12,211 | 12,205 | 12,060 | 12,020 | 12,204 | 12,321 | 12,427 | 12,545 | 12,376 | 12,586 | 12,409 | 12,503 | 12,615 | 12,393 | 12,291 | 12,299 | 12,379 | 12,390 | 12,493 | 12,774 | 12,931 | 12,967 | 12,980 | 13,115 | 13,284 | 12,995 | 13,136 | 13,179 | 13,281 | 13,040 | |
| EATON VANCE Index: Bloomberg New Jersey Municipal Bond | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg New Jersey Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 10,062 | 10,021 | 9,891 | 9,437 | 9,502 | 9,566 | 9,657 | 9,673 | 9,724 | 9,912 | 9,879 | 9,979 | 10,133 | 10,167 | 10,201 | 10,171 | 10,278 | 10,158 | 10,130 | 10,172 | 10,149 | 10,267 | 10,295 | 10,364 | 10,397 | 10,330 | 10,250 | 10,357 | 10,497 | 10,587 | 10,653 | 10,856 | 10,899 | 11,095 | 11,150 | 11,266 | 11,471 | 11,357 | 11,371 | 11,411 | 11,461 | 11,694 | 11,862 | 11,056 | 10,807 | 11,080 | 11,380 | 11,741 | 11,752 | 11,730 | 11,688 | 11,942 | 12,103 | 12,275 | 12,087 | 12,164 | 12,295 | 12,342 | 12,405 | 12,535 | 12,500 | 12,409 | 12,336 | 12,448 | 12,480 | 12,105 | 12,032 | 11,627 | 11,280 | 11,449 | 11,281 | 11,616 | 11,366 | 10,900 | 10,807 | 11,344 | 11,364 | 11,742 | 11,486 | 11,766 | 11,736 | 11,656 | 11,773 | 11,842 | 11,686 | 11,369 | 11,267 | 11,957 | 12,241 | 12,189 | 12,211 | 12,205 | 12,060 | 12,020 | 12,204 | 12,321 | 12,427 | 12,545 | 12,376 | 12,586 | 12,409 | 12,503 | 12,615 | 12,393 | 12,291 | 12,299 | 12,379 | 12,390 | 12,493 | 12,774 | 12,931 | 12,967 | 12,980 | 13,115 | 13,284 | 12,995 | 13,136 | 13,179 | 13,281 | 13,040 | |
| EATON VANCE Index: Bloomberg New Jersey Municipal Bond | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg New Jersey Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,006,229 | 1,002,113 | 989,123 | 943,695 | 950,165 | 956,608 | 965,696 | 967,297 | 972,378 | 991,169 | 987,860 | 997,924 | 1,013,273 | 1,016,691 | 1,020,136 | 1,017,064 | 1,027,752 | 1,015,785 | 1,013,049 | 1,017,222 | 1,014,940 | 1,026,746 | 1,029,501 | 1,036,443 | 1,039,741 | 1,033,033 | 1,025,003 | 1,035,714 | 1,049,730 | 1,058,724 | 1,065,339 | 1,085,611 | 1,089,851 | 1,109,453 | 1,115,034 | 1,126,592 | 1,147,085 | 1,135,675 | 1,137,052 | 1,141,143 | 1,146,076 | 1,169,434 | 1,186,230 | 1,105,641 | 1,080,740 | 1,107,964 | 1,138,021 | 1,174,072 | 1,175,181 | 1,173,019 | 1,168,759 | 1,194,164 | 1,210,272 | 1,227,510 | 1,208,656 | 1,216,377 | 1,229,518 | 1,234,239 | 1,240,490 | 1,253,459 | 1,249,971 | 1,240,917 | 1,233,603 | 1,244,815 | 1,247,954 | 1,210,494 | 1,203,161 | 1,162,701 | 1,128,025 | 1,144,932 | 1,128,109 | 1,161,646 | 1,136,576 | 1,089,954 | 1,080,695 | 1,134,399 | 1,136,430 | 1,174,172 | 1,148,639 | 1,176,582 | 1,173,590 | 1,165,601 | 1,177,287 | 1,184,234 | 1,168,551 | 1,136,862 | 1,126,668 | 1,195,650 | 1,224,128 | 1,218,883 | 1,221,094 | 1,220,524 | 1,206,029 | 1,202,034 | 1,220,351 | 1,232,094 | 1,242,707 | 1,254,473 | 1,237,616 | 1,258,583 | 1,240,851 | 1,250,269 | 1,261,475 | 1,239,283 | 1,229,133 | 1,229,922 | 1,237,873 | 1,239,022 | 1,249,271 | 1,277,445 | 1,293,134 | 1,296,731 | 1,298,009 | 1,311,533 | 1,328,444 | 1,299,529 | 1,313,621 | 1,317,899 | 1,328,142 | 1,304,021 | |
| EATON VANCE Index: Bloomberg Pennsylvania Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Pennsylvania Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 10,012 | 9,953 | 9,850 | 9,472 | 9,593 | 9,651 | 9,716 | 9,753 | 9,827 | 9,987 | 9,975 | 10,042 | 10,124 | 10,057 | 10,090 | 10,059 | 10,170 | 10,041 | 10,001 | 10,046 | 10,013 | 10,130 | 10,142 | 10,165 | 10,201 | 10,137 | 10,066 | 10,177 | 10,319 | 10,401 | 10,464 | 10,648 | 10,696 | 10,849 | 10,894 | 10,983 | 11,175 | 11,083 | 11,107 | 11,127 | 11,169 | 11,378 | 11,538 | 11,140 | 10,954 | 11,308 | 11,403 | 11,595 | 11,554 | 11,590 | 11,553 | 11,716 | 11,776 | 11,890 | 11,691 | 11,766 | 11,865 | 11,906 | 11,950 | 12,056 | 12,008 | 11,923 | 11,881 | 11,981 | 11,994 | 11,674 | 11,633 | 11,253 | 10,937 | 11,062 | 10,876 | 11,168 | 10,932 | 10,493 | 10,396 | 10,880 | 10,908 | 11,238 | 10,993 | 11,231 | 11,209 | 11,101 | 11,230 | 11,295 | 11,104 | 10,792 | 10,690 | 11,353 | 11,634 | 11,588 | 11,615 | 11,627 | 11,486 | 11,450 | 11,627 | 11,713 | 11,801 | 11,921 | 11,763 | 11,959 | 11,786 | 11,870 | 11,967 | 11,793 | 11,677 | 11,689 | 11,756 | 11,728 | 11,818 | 12,090 | 12,248 | 12,279 | 12,297 | 12,395 | 12,551 | 12,279 | 12,438 | 12,476 | 12,597 | 12,373 | |
| EATON VANCE Index: Bloomberg Pennsylvania Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Pennsylvania Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 10,012 | 9,953 | 9,850 | 9,472 | 9,593 | 9,651 | 9,716 | 9,753 | 9,827 | 9,987 | 9,975 | 10,042 | 10,124 | 10,057 | 10,090 | 10,059 | 10,170 | 10,041 | 10,001 | 10,046 | 10,013 | 10,130 | 10,142 | 10,165 | 10,201 | 10,137 | 10,066 | 10,177 | 10,319 | 10,401 | 10,464 | 10,648 | 10,696 | 10,849 | 10,894 | 10,983 | 11,175 | 11,083 | 11,107 | 11,127 | 11,169 | 11,378 | 11,538 | 11,140 | 10,954 | 11,308 | 11,403 | 11,595 | 11,554 | 11,590 | 11,553 | 11,716 | 11,776 | 11,890 | 11,691 | 11,766 | 11,865 | 11,906 | 11,950 | 12,056 | 12,008 | 11,923 | 11,881 | 11,981 | 11,994 | 11,674 | 11,633 | 11,253 | 10,937 | 11,062 | 10,876 | 11,168 | 10,932 | 10,493 | 10,396 | 10,880 | 10,908 | 11,238 | 10,993 | 11,231 | 11,209 | 11,101 | 11,230 | 11,295 | 11,104 | 10,792 | 10,690 | 11,353 | 11,634 | 11,588 | 11,615 | 11,627 | 11,486 | 11,450 | 11,627 | 11,713 | 11,801 | 11,921 | 11,763 | 11,959 | 11,786 | 11,870 | 11,967 | 11,793 | 11,677 | 11,689 | 11,756 | 11,728 | 11,818 | 12,090 | 12,248 | 12,279 | 12,297 | 12,395 | 12,551 | 12,279 | 12,438 | 12,476 | 12,597 | 12,373 | |
| EATON VANCE Index: Bloomberg Pennsylvania Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Pennsylvania Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | $ 1,000,000 | $ 1,001,172 | $ 995,348 | $ 985,004 | $ 947,181 | $ 959,254 | $ 965,113 | $ 971,618 | $ 975,304 | $ 982,652 | $ 998,696 | $ 997,500 | $ 1,004,153 | $ 1,012,363 | $ 1,005,654 | $ 1,009,003 | $ 1,005,902 | $ 1,016,998 | $ 1,004,073 | $ 1,000,144 | $ 1,004,620 | $ 1,001,285 | $ 1,013,004 | $ 1,014,247 | $ 1,016,480 | $ 1,020,076 | $ 1,013,703 | $ 1,006,602 | $ 1,017,749 | $ 1,031,879 | $ 1,040,136 | $ 1,046,359 | $ 1,064,750 | $ 1,069,593 | $ 1,084,892 | $ 1,089,355 | $ 1,098,302 | $ 1,117,501 | $ 1,108,334 | $ 1,110,702 | $ 1,112,691 | $ 1,116,915 | $ 1,137,817 | $ 1,153,848 | $ 1,114,021 | $ 1,095,432 | $ 1,130,802 | $ 1,140,319 | $ 1,159,512 | $ 1,155,391 | $ 1,158,953 | $ 1,155,260 | $ 1,171,625 | $ 1,177,553 | $ 1,188,970 | $ 1,169,120 | $ 1,176,595 | $ 1,186,511 | $ 1,190,595 | $ 1,195,007 | $ 1,205,589 | $ 1,200,809 | $ 1,192,304 | $ 1,188,079 | $ 1,198,078 | $ 1,199,362 | $ 1,167,428 | $ 1,163,296 | $ 1,125,272 | $ 1,093,728 | $ 1,106,158 | $ 1,087,641 | $ 1,116,816 | $ 1,093,179 | $ 1,049,337 | $ 1,039,648 | $ 1,087,980 | $ 1,090,817 | $ 1,123,803 | $ 1,099,326 | $ 1,123,128 | $ 1,120,859 | $ 1,110,133 | $ 1,122,978 | $ 1,129,516 | $ 1,110,351 | $ 1,079,236 | $ 1,068,996 | $ 1,135,321 | $ 1,163,363 | $ 1,158,826 | $ 1,161,451 | $ 1,162,716 | $ 1,148,615 | $ 1,144,981 | $ 1,162,704 | $ 1,171,297 | $ 1,180,098 | $ 1,192,106 | $ 1,176,331 | $ 1,195,886 | $ 1,178,556 | $ 1,187,000 | $ 1,196,680 | $ 1,179,275 | $ 1,167,726 | $ 1,168,903 | $ 1,175,591 | $ 1,172,766 | $ 1,181,786 | $ 1,208,963 | $ 1,224,835 | $ 1,227,939 | $ 1,229,653 | $ 1,239,532 | $ 1,255,128 | $ 1,227,922 | $ 1,243,757 | $ 1,247,636 | $ 1,259,747 | $ 1,237,262 | |