Shareholder Report, Line Graph (Details) - USD ($) |
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| C000013178 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Class A with Maximum Sales Charge | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | $ 10,000 | $ 9,644 | $ 9,546 | $ 9,218 | $ 9,318 | $ 9,329 | $ 9,385 | $ 9,397 | $ 9,465 | $ 9,600 | $ 9,567 | $ 9,612 | $ 9,693 | $ 9,649 | $ 9,617 | $ 9,573 | $ 9,653 | $ 9,551 | $ 9,528 | $ 9,574 | $ 9,552 | $ 9,645 | $ 9,647 | $ 9,669 | $ 9,692 | $ 9,646 | $ 9,587 | $ 9,693 | $ 9,797 | $ 9,890 | $ 9,925 | $ 10,053 | $ 10,063 | $ 10,179 | $ 10,223 | $ 10,291 | $ 10,429 | $ 10,344 | $ 10,353 | $ 10,362 | $ 10,394 | $ 10,558 | $ 10,673 | $ 10,368 | $ 10,243 | $ 10,551 | $ 10,606 | $ 10,758 | $ 10,703 | $ 10,720 | $ 10,689 | $ 10,828 | $ 10,881 | $ 10,921 | $ 10,765 | $ 10,817 | $ 10,894 | $ 10,921 | $ 10,934 | $ 11,009 | $ 10,973 | $ 10,888 | $ 10,876 | $ 10,952 | $ 10,965 | $ 10,693 | $ 10,633 | $ 10,348 | $ 10,102 | $ 10,217 | $ 10,084 | $ 10,301 | $ 10,092 | $ 9,758 | $ 9,701 | $ 10,088 | $ 10,107 | $ 10,355 | $ 10,149 | $ 10,336 | $ 10,333 | $ 10,241 | $ 10,315 | $ 10,339 | $ 10,234 | $ 9,949 | $ 9,806 | $ 10,415 | $ 10,675 | $ 10,661 | $ 10,649 | $ 10,649 | $ 10,544 | $ 10,532 | $ 10,691 | $ 10,771 | $ 10,824 | $ 10,932 | $ 10,787 | $ 10,949 | $ 10,816 | $ 10,845 | $ 10,953 | $ 10,752 | $ 10,701 | $ 10,675 | $ 10,746 | $ 10,694 | $ 10,780 | $ 11,058 | $ 11,213 | $ 11,258 | $ 11,276 | $ 11,348 | $ 11,505 | $ 11,257 | $ 11,401 | $ 11,460 | $ 11,576 | $ 11,355 | $ 11,312 | |
| C000013180 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Class C | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 9,955 | 9,855 | 9,503 | 9,605 | 9,611 | 9,661 | 9,668 | 9,740 | 9,865 | 9,829 | 9,867 | 9,941 | 9,883 | 9,858 | 9,789 | 9,872 | 9,770 | 9,733 | 9,773 | 9,737 | 9,831 | 9,828 | 9,856 | 9,862 | 9,813 | 9,742 | 9,838 | 9,954 | 10,027 | 10,067 | 10,183 | 10,199 | 10,303 | 10,340 | 10,400 | 10,536 | 10,450 | 10,442 | 10,446 | 10,471 | 10,631 | 10,735 | 10,431 | 10,296 | 10,603 | 10,650 | 10,786 | 10,729 | 10,740 | 10,705 | 10,841 | 10,885 | 10,916 | 10,754 | 10,796 | 10,874 | 10,882 | 10,900 | 10,963 | 10,924 | 10,838 | 10,810 | 10,886 | 10,881 | 10,599 | 10,539 | 10,257 | 10,000 | 10,114 | 9,974 | 10,181 | 9,970 | 9,634 | 9,565 | 9,952 | 9,953 | 10,200 | 9,982 | 10,161 | 10,165 | 10,063 | 10,127 | 10,144 | 10,031 | 9,753 | 9,606 | 10,195 | 10,439 | 10,422 | 10,406 | 10,401 | 10,289 | 10,273 | 10,413 | 10,493 | 10,524 | 10,630 | 10,481 | 10,636 | 10,486 | 10,519 | 10,613 | 10,414 | 10,363 | 10,323 | 10,382 | 10,330 | 10,416 | 10,675 | 10,822 | 10,846 | 10,856 | 10,930 | 11,079 | 10,825 | 10,950 | 11,011 | 11,110 | 10,881 | 10,840 | |
| C000063956 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Class I | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 995,811 | 987,034 | 952,297 | 962,762 | 965,217 | 970,005 | 972,567 | 979,725 | 992,636 | 990,609 | 995,434 | 1,002,828 | 998,477 | 996,412 | 990,877 | 999,343 | 990,170 | 987,974 | 991,743 | 989,656 | 999,390 | 1,000,922 | 1,003,420 | 1,005,940 | 1,000,133 | 994,300 | 1,005,363 | 1,017,541 | 1,026,163 | 1,031,163 | 1,043,352 | 1,045,830 | 1,057,958 | 1,061,506 | 1,068,753 | 1,084,483 | 1,075,768 | 1,075,670 | 1,076,814 | 1,080,341 | 1,097,508 | 1,109,678 | 1,079,463 | 1,065,350 | 1,098,816 | 1,103,454 | 1,119,349 | 1,113,845 | 1,115,874 | 1,114,041 | 1,127,443 | 1,133,124 | 1,137,515 | 1,121,479 | 1,127,011 | 1,135,216 | 1,138,242 | 1,139,799 | 1,147,781 | 1,145,504 | 1,136,818 | 1,134,519 | 1,143,884 | 1,144,211 | 1,116,048 | 1,110,027 | 1,080,502 | 1,054,993 | 1,067,222 | 1,053,502 | 1,076,331 | 1,054,699 | 1,020,108 | 1,014,347 | 1,056,129 | 1,057,001 | 1,084,428 | 1,061,744 | 1,081,490 | 1,082,684 | 1,071,867 | 1,079,865 | 1,082,499 | 1,071,711 | 1,042,117 | 1,027,353 | 1,091,231 | 1,118,573 | 1,117,350 | 1,117,566 | 1,117,772 | 1,105,674 | 1,105,900 | 1,121,361 | 1,129,918 | 1,135,684 | 1,147,201 | 1,132,199 | 1,149,362 | 1,135,696 | 1,138,884 | 1,150,426 | 1,129,580 | 1,124,336 | 1,121,886 | 1,129,479 | 1,124,190 | 1,133,442 | 1,162,830 | 1,179,293 | 1,184,232 | 1,186,255 | 1,194,108 | 1,210,764 | 1,186,371 | 1,200,192 | 1,206,619 | 1,219,047 | 1,195,982 | 1,191,990 | |
| C000013104 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Class A with Maximum Sales Charge | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 9,645 | 9,584 | 9,321 | 9,398 | 9,443 | 9,490 | 9,504 | 9,550 | 9,663 | 9,635 | 9,690 | 9,745 | 9,702 | 9,702 | 9,660 | 9,738 | 9,640 | 9,617 | 9,651 | 9,618 | 9,708 | 9,709 | 9,742 | 9,743 | 9,687 | 9,630 | 9,721 | 9,810 | 9,866 | 9,912 | 10,060 | 10,083 | 10,197 | 10,230 | 10,308 | 10,467 | 10,397 | 10,393 | 10,412 | 10,431 | 10,601 | 10,737 | 10,361 | 10,078 | 10,414 | 10,518 | 10,690 | 10,639 | 10,646 | 10,617 | 10,790 | 10,867 | 10,943 | 10,782 | 10,810 | 10,896 | 10,958 | 10,984 | 11,082 | 11,048 | 10,954 | 10,932 | 11,031 | 11,032 | 10,780 | 10,735 | 10,398 | 10,099 | 10,237 | 10,048 | 10,309 | 10,069 | 9,683 | 9,616 | 10,052 | 10,035 | 10,338 | 10,088 | 10,307 | 10,292 | 10,202 | 10,287 | 10,323 | 10,213 | 9,903 | 9,766 | 10,386 | 10,678 | 10,667 | 10,668 | 10,669 | 10,556 | 10,545 | 10,714 | 10,793 | 10,860 | 10,965 | 10,812 | 11,009 | 10,855 | 10,883 | 11,014 | 10,793 | 10,743 | 10,666 | 10,762 | 10,686 | 10,796 | 11,106 | 11,270 | 11,300 | 11,331 | 11,415 | 11,580 | 11,312 | 11,452 | 11,523 | 11,622 | 11,392 | 11,361 | |
| C000013106 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Class C | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 9,958 | 9,895 | 9,622 | 9,691 | 9,730 | 9,770 | 9,779 | 9,820 | 9,932 | 9,891 | 9,949 | 9,996 | 9,952 | 9,937 | 9,883 | 9,962 | 9,866 | 9,820 | 9,857 | 9,812 | 9,902 | 9,900 | 9,926 | 9,923 | 9,856 | 9,788 | 9,878 | 9,968 | 10,016 | 10,054 | 10,198 | 10,215 | 10,326 | 10,353 | 10,431 | 10,573 | 10,504 | 10,495 | 10,497 | 10,510 | 10,672 | 10,815 | 10,420 | 10,132 | 10,459 | 10,561 | 10,725 | 10,673 | 10,675 | 10,643 | 10,796 | 10,872 | 10,937 | 10,773 | 10,793 | 10,878 | 10,928 | 10,958 | 11,041 | 10,993 | 10,902 | 10,876 | 10,961 | 10,956 | 10,699 | 10,643 | 10,308 | 10,009 | 10,130 | 9,932 | 10,196 | 9,952 | 9,554 | 9,488 | 9,923 | 9,891 | 10,183 | 9,931 | 10,134 | 10,116 | 10,031 | 10,104 | 10,119 | 10,016 | 9,712 | 9,562 | 10,171 | 10,441 | 10,437 | 10,423 | 10,420 | 10,291 | 10,277 | 10,435 | 10,513 | 10,568 | 10,670 | 10,517 | 10,688 | 10,534 | 10,555 | 10,679 | 10,455 | 10,407 | 10,323 | 10,404 | 10,332 | 10,425 | 10,720 | 10,872 | 10,894 | 10,917 | 10,999 | 11,141 | 10,887 | 11,006 | 11,065 | 11,160 | 10,940 | 10,900 | |
| C000063947 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Class I | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 997,104 | 990,924 | 963,964 | 972,108 | 976,978 | 981,913 | 983,544 | 988,540 | 1,000,366 | 997,591 | 1,003,446 | 1,009,293 | 1,005,035 | 1,005,244 | 1,001,011 | 1,009,284 | 999,290 | 997,115 | 1,000,752 | 997,544 | 1,006,985 | 1,007,327 | 1,010,935 | 1,011,193 | 1,005,564 | 999,844 | 1,008,204 | 1,018,818 | 1,024,834 | 1,029,731 | 1,045,265 | 1,047,815 | 1,059,763 | 1,063,407 | 1,071,661 | 1,088,348 | 1,081,237 | 1,081,048 | 1,081,973 | 1,084,141 | 1,103,192 | 1,117,501 | 1,078,619 | 1,049,375 | 1,084,545 | 1,095,472 | 1,113,588 | 1,108,450 | 1,109,400 | 1,106,562 | 1,123,443 | 1,132,882 | 1,139,816 | 1,124,467 | 1,127,530 | 1,136,725 | 1,143,348 | 1,146,273 | 1,156,645 | 1,153,282 | 1,143,705 | 1,141,607 | 1,152,095 | 1,152,448 | 1,126,373 | 1,120,628 | 1,086,935 | 1,055,866 | 1,069,182 | 1,049,684 | 1,078,317 | 1,053,461 | 1,012,126 | 1,005,264 | 1,052,312 | 1,050,649 | 1,082,535 | 1,056,557 | 1,078,307 | 1,078,192 | 1,068,977 | 1,078,123 | 1,080,694 | 1,069,385 | 1,038,479 | 1,023,044 | 1,089,373 | 1,120,151 | 1,119,131 | 1,119,460 | 1,119,797 | 1,106,799 | 1,105,827 | 1,125,068 | 1,133,544 | 1,140,730 | 1,152,007 | 1,136,092 | 1,156,954 | 1,140,971 | 1,144,145 | 1,158,058 | 1,135,070 | 1,130,043 | 1,122,202 | 1,131,064 | 1,124,628 | 1,134,976 | 1,169,180 | 1,186,574 | 1,189,932 | 1,193,361 | 1,202,412 | 1,220,011 | 1,191,997 | 1,206,902 | 1,214,617 | 1,225,245 | 1,201,259 | 1,198,643 | |
| C000013120 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Class A with Maximum Sales Charge | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 9,643 | 9,571 | 9,282 | 9,348 | 9,366 | 9,414 | 9,431 | 9,489 | 9,607 | 9,575 | 9,623 | 9,692 | 9,679 | 9,625 | 9,570 | 9,639 | 9,573 | 9,578 | 9,615 | 9,589 | 9,699 | 9,715 | 9,751 | 9,777 | 9,718 | 9,650 | 9,739 | 9,818 | 9,886 | 9,955 | 10,087 | 10,112 | 10,244 | 10,280 | 10,349 | 10,517 | 10,454 | 10,445 | 10,459 | 10,484 | 10,652 | 10,787 | 10,515 | 10,374 | 10,699 | 10,746 | 10,892 | 10,837 | 10,844 | 10,817 | 10,982 | 11,034 | 11,063 | 10,868 | 10,942 | 11,039 | 11,056 | 11,074 | 11,170 | 11,132 | 11,024 | 11,008 | 11,095 | 11,113 | 10,832 | 10,783 | 10,490 | 10,198 | 10,321 | 10,122 | 10,375 | 10,150 | 9,764 | 9,681 | 10,126 | 10,149 | 10,407 | 10,162 | 10,365 | 10,356 | 10,276 | 10,362 | 10,389 | 10,260 | 9,952 | 9,811 | 10,394 | 10,654 | 10,646 | 10,652 | 10,657 | 10,541 | 10,523 | 10,677 | 10,757 | 10,827 | 10,945 | 10,789 | 10,971 | 10,814 | 10,832 | 10,963 | 10,779 | 10,697 | 10,665 | 10,786 | 10,741 | 10,837 | 11,113 | 11,247 | 11,291 | 11,298 | 11,368 | 11,529 | 11,298 | 11,421 | 11,466 | 11,564 | 11,345 | 11,309 | |
| C000013122 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Class C | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 9,957 | 9,868 | 9,576 | 9,635 | 9,648 | 9,690 | 9,702 | 9,752 | 9,859 | 9,825 | 9,867 | 9,936 | 9,921 | 9,849 | 9,794 | 9,854 | 9,780 | 9,782 | 9,812 | 9,785 | 9,882 | 9,893 | 9,932 | 9,943 | 9,876 | 9,809 | 9,888 | 9,966 | 10,025 | 10,094 | 10,211 | 10,230 | 10,367 | 10,395 | 10,465 | 10,614 | 10,542 | 10,540 | 10,538 | 10,557 | 10,716 | 10,845 | 10,563 | 10,420 | 10,741 | 10,780 | 10,918 | 10,863 | 10,854 | 10,825 | 10,980 | 11,032 | 11,053 | 10,861 | 10,923 | 11,006 | 11,026 | 11,037 | 11,119 | 11,068 | 10,966 | 10,936 | 11,019 | 11,020 | 10,742 | 10,682 | 10,394 | 10,096 | 10,213 | 10,009 | 10,252 | 10,026 | 9,634 | 9,546 | 9,981 | 9,997 | 10,244 | 9,991 | 10,189 | 10,177 | 10,091 | 10,164 | 10,184 | 10,055 | 9,735 | 9,606 | 10,174 | 10,410 | 10,400 | 10,401 | 10,391 | 10,274 | 10,254 | 10,398 | 10,465 | 10,533 | 10,645 | 10,482 | 10,649 | 10,485 | 10,508 | 10,620 | 10,443 | 10,357 | 10,314 | 10,427 | 10,373 | 10,464 | 10,713 | 10,837 | 10,873 | 10,886 | 10,931 | 11,090 | 10,851 | 10,966 | 11,012 | 11,093 | 10,876 | 10,840 | |
| C000092719 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Class I | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 996,865 | 988,612 | 959,918 | 966,985 | 967,966 | 974,096 | 976,033 | 982,106 | 993,472 | 991,336 | 995,472 | 1,003,781 | 1,002,602 | 996,213 | 991,768 | 998,981 | 991,264 | 992,014 | 995,967 | 994,541 | 1,004,970 | 1,006,802 | 1,010,699 | 1,013,561 | 1,007,716 | 1,000,761 | 1,010,229 | 1,018,559 | 1,025,781 | 1,033,069 | 1,046,928 | 1,049,699 | 1,064,733 | 1,067,458 | 1,076,003 | 1,092,409 | 1,086,082 | 1,085,343 | 1,086,960 | 1,089,781 | 1,107,368 | 1,121,529 | 1,093,451 | 1,078,997 | 1,112,826 | 1,117,886 | 1,133,221 | 1,128,834 | 1,128,592 | 1,126,010 | 1,143,367 | 1,148,953 | 1,152,180 | 1,133,226 | 1,139,992 | 1,150,259 | 1,153,440 | 1,155,422 | 1,164,534 | 1,160,694 | 1,150,903 | 1,148,200 | 1,158,641 | 1,159,501 | 1,130,472 | 1,125,477 | 1,095,155 | 1,064,849 | 1,079,104 | 1,057,307 | 1,085,111 | 1,060,608 | 1,020,449 | 1,011,999 | 1,059,819 | 1,061,192 | 1,088,278 | 1,062,893 | 1,084,311 | 1,083,549 | 1,075,348 | 1,084,583 | 1,087,561 | 1,074,274 | 1,042,212 | 1,027,621 | 1,090,128 | 1,116,158 | 1,116,866 | 1,117,627 | 1,117,124 | 1,105,142 | 1,103,410 | 1,119,737 | 1,128,361 | 1,135,814 | 1,148,410 | 1,132,296 | 1,151,494 | 1,135,269 | 1,138,693 | 1,151,255 | 1,132,194 | 1,125,066 | 1,120,577 | 1,134,795 | 1,128,921 | 1,139,188 | 1,168,382 | 1,182,629 | 1,187,520 | 1,189,770 | 1,195,951 | 1,213,033 | 1,188,961 | 1,202,156 | 1,208,434 | 1,217,566 | 1,194,746 | 1,191,180 | |
| C000013136 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Class A with Maximum Sales Charge | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 9,628 | 9,549 | 9,243 | 9,319 | 9,345 | 9,392 | 9,417 | 9,474 | 9,583 | 9,566 | 9,602 | 9,669 | 9,641 | 9,623 | 9,562 | 9,641 | 9,547 | 9,519 | 9,533 | 9,514 | 9,592 | 9,607 | 9,631 | 9,645 | 9,593 | 9,529 | 9,620 | 9,711 | 9,777 | 9,810 | 9,921 | 9,942 | 10,063 | 10,106 | 10,171 | 10,338 | 10,268 | 10,266 | 10,276 | 10,297 | 10,477 | 10,613 | 10,270 | 10,121 | 10,405 | 10,483 | 10,640 | 10,590 | 10,586 | 10,557 | 10,712 | 10,763 | 10,826 | 10,658 | 10,698 | 10,796 | 10,811 | 10,838 | 10,922 | 10,890 | 10,798 | 10,777 | 10,850 | 10,852 | 10,594 | 10,538 | 10,268 | 10,010 | 10,130 | 9,990 | 10,220 | 10,008 | 9,691 | 9,636 | 9,989 | 10,018 | 10,252 | 10,044 | 10,220 | 10,205 | 10,093 | 10,175 | 10,185 | 10,086 | 9,830 | 9,696 | 10,262 | 10,510 | 10,499 | 10,500 | 10,502 | 10,404 | 10,394 | 10,546 | 10,636 | 10,689 | 10,793 | 10,619 | 10,800 | 10,651 | 10,680 | 10,797 | 10,596 | 10,536 | 10,487 | 10,556 | 10,494 | 10,575 | 10,878 | 11,037 | 11,080 | 11,098 | 11,179 | 11,327 | 11,078 | 11,214 | 11,284 | 11,381 | 11,131 | 11,089 | |
| C000013138 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Class C | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 9,950 | 9,860 | 9,542 | 9,611 | 9,632 | 9,673 | 9,693 | 9,743 | 9,853 | 9,823 | 9,852 | 9,922 | 9,891 | 9,859 | 9,797 | 9,867 | 9,774 | 9,733 | 9,741 | 9,709 | 9,789 | 9,788 | 9,817 | 9,826 | 9,762 | 9,697 | 9,779 | 9,860 | 9,918 | 9,956 | 10,055 | 10,071 | 10,190 | 10,225 | 10,293 | 10,444 | 10,363 | 10,366 | 10,360 | 10,386 | 10,560 | 10,682 | 10,335 | 10,180 | 10,462 | 10,530 | 10,682 | 10,620 | 10,610 | 10,578 | 10,728 | 10,770 | 10,833 | 10,650 | 10,682 | 10,768 | 10,787 | 10,806 | 10,889 | 10,842 | 10,752 | 10,715 | 10,788 | 10,784 | 10,518 | 10,462 | 10,174 | 9,920 | 10,036 | 9,881 | 10,097 | 9,898 | 9,569 | 9,513 | 9,854 | 9,876 | 10,096 | 9,890 | 10,057 | 10,038 | 9,920 | 9,991 | 9,995 | 9,900 | 9,640 | 9,503 | 10,047 | 10,279 | 10,264 | 10,262 | 10,258 | 10,154 | 10,128 | 10,285 | 10,362 | 10,405 | 10,495 | 10,333 | 10,503 | 10,341 | 10,362 | 10,476 | 10,266 | 10,208 | 10,160 | 10,205 | 10,146 | 10,214 | 10,505 | 10,655 | 10,689 | 10,688 | 10,768 | 10,896 | 10,656 | 10,786 | 10,843 | 10,925 | 10,685 | 10,647 | |
| C000063950 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Class I | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 995,288 | 987,340 | 956,991 | 963,981 | 967,864 | 971,767 | 974,557 | 980,609 | 993,135 | 990,477 | 994,345 | 1,001,455 | 998,729 | 997,012 | 992,046 | 1,000,297 | 990,834 | 986,937 | 989,669 | 986,752 | 995,062 | 996,694 | 999,406 | 1,002,119 | 995,770 | 990,517 | 998,985 | 1,008,548 | 1,015,604 | 1,020,348 | 1,030,816 | 1,033,199 | 1,045,945 | 1,050,508 | 1,058,661 | 1,074,973 | 1,067,953 | 1,069,044 | 1,069,088 | 1,072,659 | 1,090,384 | 1,104,604 | 1,069,160 | 1,053,836 | 1,084,743 | 1,091,799 | 1,108,347 | 1,103,355 | 1,104,256 | 1,101,459 | 1,117,793 | 1,123,257 | 1,129,976 | 1,111,464 | 1,115,819 | 1,126,264 | 1,129,203 | 1,130,983 | 1,141,175 | 1,137,975 | 1,128,653 | 1,125,407 | 1,134,447 | 1,134,840 | 1,106,935 | 1,102,488 | 1,073,244 | 1,046,509 | 1,060,489 | 1,044,875 | 1,068,971 | 1,048,357 | 1,014,163 | 1,008,591 | 1,046,841 | 1,048,847 | 1,073,488 | 1,051,864 | 1,071,738 | 1,069,042 | 1,057,529 | 1,066,362 | 1,067,551 | 1,058,675 | 1,030,818 | 1,016,988 | 1,077,620 | 1,102,444 | 1,101,503 | 1,101,856 | 1,102,196 | 1,092,180 | 1,091,263 | 1,108,717 | 1,117,016 | 1,122,782 | 1,133,856 | 1,117,182 | 1,136,305 | 1,119,558 | 1,122,791 | 1,135,277 | 1,114,344 | 1,109,555 | 1,103,328 | 1,110,703 | 1,104,432 | 1,113,146 | 1,146,519 | 1,162,081 | 1,166,747 | 1,168,855 | 1,177,538 | 1,193,263 | 1,167,349 | 1,183,284 | 1,189,425 | 1,199,806 | 1,175,109 | 1,171,374 | |
| C000013142 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Class A with Maximum Sales Charge | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 9,659 | 9,579 | 9,282 | 9,353 | 9,381 | 9,432 | 9,449 | 9,521 | 9,648 | 9,610 | 9,651 | 9,712 | 9,685 | 9,590 | 9,563 | 9,615 | 9,564 | 9,559 | 9,600 | 9,594 | 9,692 | 9,698 | 9,748 | 9,753 | 9,711 | 9,658 | 9,743 | 9,839 | 9,924 | 9,974 | 10,080 | 10,104 | 10,222 | 10,256 | 10,337 | 10,513 | 10,441 | 10,439 | 10,450 | 10,474 | 10,641 | 10,774 | 10,520 | 10,423 | 10,737 | 10,797 | 10,940 | 10,888 | 10,883 | 10,853 | 11,007 | 11,060 | 11,088 | 10,896 | 10,950 | 11,029 | 11,070 | 11,086 | 11,164 | 11,131 | 11,049 | 11,040 | 11,118 | 11,122 | 10,850 | 10,805 | 10,482 | 10,199 | 10,306 | 10,148 | 10,369 | 10,147 | 9,811 | 9,744 | 10,177 | 10,178 | 10,448 | 10,206 | 10,426 | 10,402 | 10,286 | 10,378 | 10,406 | 10,251 | 9,992 | 9,863 | 10,433 | 10,687 | 10,663 | 10,679 | 10,669 | 10,578 | 10,581 | 10,719 | 10,817 | 10,874 | 10,987 | 10,827 | 10,994 | 10,861 | 10,877 | 10,987 | 10,839 | 10,788 | 10,750 | 10,809 | 10,743 | 10,845 | 11,115 | 11,259 | 11,319 | 11,323 | 11,409 | 11,555 | 11,329 | 11,476 | 11,507 | 11,626 | 11,414 | 11,375 | |
| C000013144 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Class C | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 9,982 | 9,902 | 9,577 | 9,651 | 9,664 | 9,718 | 9,721 | 9,795 | 9,911 | 9,872 | 9,918 | 9,970 | 9,931 | 9,828 | 9,788 | 9,843 | 9,782 | 9,775 | 9,808 | 9,800 | 9,887 | 9,890 | 9,932 | 9,944 | 9,890 | 9,826 | 9,901 | 9,998 | 10,073 | 10,115 | 10,220 | 10,249 | 10,353 | 10,391 | 10,462 | 10,620 | 10,537 | 10,531 | 10,537 | 10,565 | 10,726 | 10,854 | 10,594 | 10,478 | 10,795 | 10,845 | 10,994 | 10,919 | 10,909 | 10,877 | 11,023 | 11,066 | 11,087 | 10,894 | 10,938 | 11,017 | 11,048 | 11,058 | 11,123 | 11,087 | 10,996 | 10,971 | 11,059 | 11,057 | 10,771 | 10,713 | 10,393 | 10,098 | 10,213 | 10,043 | 10,249 | 10,031 | 9,689 | 9,625 | 10,035 | 10,043 | 10,293 | 10,049 | 10,254 | 10,228 | 10,108 | 10,187 | 10,208 | 10,065 | 9,794 | 9,675 | 10,216 | 10,451 | 10,438 | 10,436 | 10,423 | 10,327 | 10,313 | 10,456 | 10,539 | 10,586 | 10,694 | 10,536 | 10,693 | 10,546 | 10,556 | 10,662 | 10,502 | 10,453 | 10,403 | 10,452 | 10,389 | 10,476 | 10,735 | 10,870 | 10,906 | 10,918 | 10,990 | 11,126 | 10,899 | 11,023 | 11,059 | 11,159 | 10,956 | 10,903 | |
| C000092722 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Class I | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 998,547 | 991,478 | 959,767 | 967,304 | 970,386 | 975,748 | 977,717 | 985,347 | 998,709 | 994,935 | 1,000,432 | 1,005,812 | 1,003,140 | 993,501 | 990,834 | 997,520 | 991,295 | 990,937 | 995,277 | 994,887 | 1,005,190 | 1,006,015 | 1,011,355 | 1,013,227 | 1,007,860 | 1,002,437 | 1,011,431 | 1,022,880 | 1,030,656 | 1,035,943 | 1,047,230 | 1,051,067 | 1,063,479 | 1,067,217 | 1,074,613 | 1,093,160 | 1,085,754 | 1,085,744 | 1,087,100 | 1,089,738 | 1,107,383 | 1,121,297 | 1,095,070 | 1,085,132 | 1,118,007 | 1,124,354 | 1,140,772 | 1,134,234 | 1,133,874 | 1,130,960 | 1,147,137 | 1,152,865 | 1,156,046 | 1,137,389 | 1,141,941 | 1,151,742 | 1,154,902 | 1,158,099 | 1,165,152 | 1,163,144 | 1,153,452 | 1,152,711 | 1,161,114 | 1,162,991 | 1,133,437 | 1,128,860 | 1,096,655 | 1,065,904 | 1,078,587 | 1,060,918 | 1,084,223 | 1,061,090 | 1,026,091 | 1,020,583 | 1,064,829 | 1,066,423 | 1,093,583 | 1,068,347 | 1,091,605 | 1,089,207 | 1,077,253 | 1,087,107 | 1,090,180 | 1,075,479 | 1,047,075 | 1,035,140 | 1,093,706 | 1,120,575 | 1,119,650 | 1,120,086 | 1,120,594 | 1,109,876 | 1,110,384 | 1,126,491 | 1,135,520 | 1,141,760 | 1,153,739 | 1,138,589 | 1,156,332 | 1,141,124 | 1,142,960 | 1,156,206 | 1,139,348 | 1,134,107 | 1,130,306 | 1,136,742 | 1,131,423 | 1,140,884 | 1,169,524 | 1,184,882 | 1,191,404 | 1,191,977 | 1,201,339 | 1,218,322 | 1,194,755 | 1,208,891 | 1,213,911 | 1,225,147 | 1,202,941 | 1,198,772 | |
| C000013151 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Class A with Maximum Sales Charge | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 9,639 | 9,562 | 9,243 | 9,328 | 9,352 | 9,397 | 9,410 | 9,486 | 9,623 | 9,585 | 9,620 | 9,685 | 9,668 | 9,610 | 9,551 | 9,596 | 9,546 | 9,518 | 9,543 | 9,525 | 9,624 | 9,650 | 9,707 | 9,722 | 9,675 | 9,627 | 9,693 | 9,790 | 9,866 | 9,932 | 10,022 | 10,036 | 10,145 | 10,179 | 10,235 | 10,345 | 10,290 | 10,299 | 10,309 | 10,343 | 10,475 | 10,574 | 10,306 | 10,193 | 10,471 | 10,559 | 10,679 | 10,652 | 10,660 | 10,668 | 10,778 | 10,819 | 10,881 | 10,761 | 10,788 | 10,848 | 10,873 | 10,888 | 10,948 | 10,929 | 10,852 | 10,832 | 10,904 | 10,908 | 10,657 | 10,605 | 10,320 | 10,105 | 10,191 | 10,068 | 10,248 | 10,088 | 9,802 | 9,761 | 10,097 | 10,127 | 10,333 | 10,153 | 10,314 | 10,311 | 10,238 | 10,295 | 10,317 | 10,233 | 9,949 | 9,821 | 10,369 | 10,579 | 10,583 | 10,588 | 10,593 | 10,501 | 10,507 | 10,660 | 10,740 | 10,797 | 10,903 | 10,748 | 10,954 | 10,786 | 10,804 | 10,911 | 10,703 | 10,635 | 10,565 | 10,636 | 10,537 | 10,619 | 10,933 | 11,108 | 11,154 | 11,161 | 11,246 | 11,408 | 11,190 | 11,340 | 11,398 | 11,523 | 11,290 | 11,259 | |
| C000013153 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Class C | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 9,960 | 9,880 | 9,545 | 9,623 | 9,642 | 9,681 | 9,690 | 9,759 | 9,897 | 9,856 | 9,884 | 9,943 | 9,912 | 9,850 | 9,789 | 9,817 | 9,765 | 9,733 | 9,752 | 9,731 | 9,821 | 9,852 | 9,892 | 9,911 | 9,851 | 9,800 | 9,860 | 9,948 | 10,015 | 10,074 | 10,165 | 10,174 | 10,273 | 10,311 | 10,359 | 10,459 | 10,401 | 10,393 | 10,409 | 10,425 | 10,567 | 10,645 | 10,384 | 10,262 | 10,520 | 10,608 | 10,716 | 10,685 | 10,698 | 10,689 | 10,798 | 10,842 | 10,883 | 10,754 | 10,784 | 10,835 | 10,842 | 10,861 | 10,912 | 10,887 | 10,809 | 10,784 | 10,846 | 10,833 | 10,581 | 10,527 | 10,233 | 10,016 | 10,091 | 9,971 | 10,144 | 9,968 | 9,685 | 9,631 | 9,961 | 9,983 | 10,192 | 9,998 | 10,152 | 10,134 | 10,061 | 10,120 | 10,135 | 10,041 | 9,763 | 9,629 | 10,152 | 10,364 | 10,363 | 10,352 | 10,351 | 10,251 | 10,251 | 10,399 | 10,467 | 10,515 | 10,607 | 10,449 | 10,645 | 10,485 | 10,498 | 10,591 | 10,373 | 10,306 | 10,238 | 10,286 | 10,190 | 10,272 | 10,566 | 10,719 | 10,757 | 10,759 | 10,831 | 10,985 | 10,770 | 10,901 | 10,960 | 11,068 | 10,841 | 10,804 | |
| C000063952 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Class I | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 996,444 | 988,682 | 955,877 | 964,789 | 967,452 | 972,226 | 973,834 | 981,777 | 996,100 | 992,410 | 996,139 | 1,003,098 | 1,000,436 | 995,606 | 989,696 | 994,540 | 988,474 | 986,817 | 989,518 | 987,855 | 998,302 | 1,001,151 | 1,007,242 | 1,008,916 | 1,004,189 | 999,385 | 1,006,481 | 1,016,607 | 1,024,691 | 1,031,746 | 1,041,215 | 1,042,835 | 1,054,400 | 1,058,045 | 1,064,072 | 1,075,705 | 1,070,115 | 1,070,096 | 1,072,503 | 1,076,146 | 1,090,133 | 1,099,413 | 1,072,860 | 1,061,325 | 1,089,226 | 1,099,715 | 1,111,238 | 1,109,822 | 1,110,833 | 1,110,637 | 1,123,438 | 1,127,917 | 1,133,372 | 1,122,238 | 1,125,237 | 1,131,694 | 1,133,356 | 1,136,283 | 1,142,760 | 1,140,883 | 1,133,059 | 1,131,147 | 1,138,934 | 1,138,273 | 1,112,327 | 1,108,280 | 1,078,710 | 1,056,430 | 1,065,584 | 1,052,907 | 1,071,865 | 1,054,142 | 1,025,601 | 1,020,316 | 1,056,829 | 1,060,111 | 1,081,924 | 1,062,021 | 1,080,225 | 1,078,927 | 1,072,645 | 1,078,792 | 1,081,283 | 1,071,476 | 1,043,170 | 1,029,938 | 1,086,166 | 1,109,632 | 1,110,305 | 1,110,998 | 1,111,706 | 1,102,217 | 1,103,003 | 1,119,298 | 1,127,866 | 1,132,711 | 1,145,315 | 1,127,960 | 1,149,803 | 1,133,647 | 1,135,798 | 1,147,134 | 1,125,542 | 1,118,545 | 1,111,431 | 1,117,677 | 1,108,790 | 1,117,610 | 1,150,873 | 1,168,040 | 1,173,105 | 1,174,088 | 1,183,208 | 1,201,764 | 1,179,070 | 1,193,702 | 1,201,354 | 1,213,285 | 1,190,424 | 1,186,990 | |
| C000013157 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Class A with Maximum Sales Charge | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 9,644 | 9,589 | 9,345 | 9,408 | 9,454 | 9,505 | 9,520 | 9,584 | 9,671 | 9,649 | 9,688 | 9,739 | 9,685 | 9,642 | 9,575 | 9,632 | 9,550 | 9,531 | 9,575 | 9,551 | 9,639 | 9,666 | 9,690 | 9,719 | 9,669 | 9,618 | 9,707 | 9,795 | 9,870 | 9,921 | 10,035 | 10,048 | 10,162 | 10,198 | 10,273 | 10,424 | 10,356 | 10,351 | 10,360 | 10,385 | 10,565 | 10,681 | 10,323 | 10,228 | 10,556 | 10,633 | 10,776 | 10,746 | 10,754 | 10,721 | 10,876 | 10,937 | 10,984 | 10,830 | 10,848 | 10,934 | 10,980 | 10,998 | 11,070 | 11,033 | 10,942 | 10,919 | 10,992 | 10,997 | 10,713 | 10,637 | 10,339 | 10,055 | 10,157 | 10,011 | 10,253 | 10,007 | 9,666 | 9,588 | 9,987 | 9,993 | 10,252 | 10,022 | 10,185 | 10,179 | 10,089 | 10,163 | 10,201 | 10,070 | 9,754 | 9,595 | 10,213 | 10,443 | 10,457 | 10,456 | 10,485 | 10,412 | 10,382 | 10,546 | 10,607 | 10,686 | 10,789 | 10,656 | 10,849 | 10,700 | 10,728 | 10,830 | 10,634 | 10,574 | 10,497 | 10,589 | 10,531 | 10,660 | 10,966 | 11,134 | 11,165 | 11,179 | 11,271 | 11,440 | 11,204 | 11,343 | 11,419 | 11,529 | 11,291 | 11,237 | |
| C000013159 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Class C | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 9,957 | 9,891 | 9,638 | 9,694 | 9,745 | 9,779 | 9,789 | 9,844 | 9,944 | 9,909 | 9,942 | 9,987 | 9,922 | 9,867 | 9,802 | 9,851 | 9,771 | 9,741 | 9,766 | 9,741 | 9,830 | 9,851 | 9,870 | 9,892 | 9,843 | 9,781 | 9,860 | 9,948 | 10,012 | 10,055 | 10,168 | 10,176 | 10,287 | 10,317 | 10,392 | 10,538 | 10,447 | 10,450 | 10,443 | 10,473 | 10,644 | 10,757 | 10,392 | 10,278 | 10,607 | 10,673 | 10,822 | 10,766 | 10,769 | 10,746 | 10,894 | 10,944 | 10,981 | 10,814 | 10,837 | 10,910 | 10,946 | 10,957 | 11,016 | 10,990 | 10,891 | 10,853 | 10,914 | 10,913 | 10,629 | 10,556 | 10,248 | 9,953 | 10,052 | 9,904 | 10,129 | 9,893 | 9,547 | 9,461 | 9,849 | 9,851 | 10,102 | 9,856 | 10,022 | 10,000 | 9,916 | 9,978 | 10,008 | 9,875 | 9,554 | 9,398 | 9,992 | 10,217 | 10,212 | 10,221 | 10,243 | 10,149 | 10,132 | 10,273 | 10,336 | 10,401 | 10,489 | 10,367 | 10,533 | 10,386 | 10,420 | 10,506 | 10,317 | 10,235 | 10,151 | 10,254 | 10,174 | 10,296 | 10,600 | 10,743 | 10,765 | 10,774 | 10,863 | 11,006 | 10,770 | 10,901 | 10,963 | 11,067 | 10,830 | 10,782 | |
| C000063953 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Class I | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 996,976 | 991,474 | 966,483 | 973,186 | 978,062 | 983,531 | 985,252 | 991,942 | 1,001,099 | 999,063 | 1,003,246 | 1,008,724 | 1,003,297 | 999,120 | 992,468 | 997,366 | 990,321 | 988,597 | 991,967 | 989,694 | 1,000,296 | 1,003,241 | 1,005,927 | 1,009,038 | 1,004,061 | 998,989 | 1,007,075 | 1,016,317 | 1,025,594 | 1,031,002 | 1,041,698 | 1,044,516 | 1,056,517 | 1,060,491 | 1,068,394 | 1,084,319 | 1,076,023 | 1,077,077 | 1,076,905 | 1,080,996 | 1,099,910 | 1,112,117 | 1,075,085 | 1,064,099 | 1,098,368 | 1,106,583 | 1,122,998 | 1,118,670 | 1,119,639 | 1,117,819 | 1,134,144 | 1,140,675 | 1,145,724 | 1,129,939 | 1,131,949 | 1,141,127 | 1,144,658 | 1,146,754 | 1,154,442 | 1,152,233 | 1,142,959 | 1,139,312 | 1,147,096 | 1,147,804 | 1,118,445 | 1,112,072 | 1,081,221 | 1,050,368 | 1,061,180 | 1,047,515 | 1,071,516 | 1,047,550 | 1,010,649 | 1,004,165 | 1,045,926 | 1,046,771 | 1,074,067 | 1,048,671 | 1,067,355 | 1,065,501 | 1,056,214 | 1,065,623 | 1,068,325 | 1,054,751 | 1,021,904 | 1,005,487 | 1,070,303 | 1,096,060 | 1,096,189 | 1,097,820 | 1,101,016 | 1,092,031 | 1,090,649 | 1,106,401 | 1,114,574 | 1,122,988 | 1,132,493 | 1,120,208 | 1,139,119 | 1,123,658 | 1,128,419 | 1,139,279 | 1,118,925 | 1,111,222 | 1,103,386 | 1,114,746 | 1,107,328 | 1,121,000 | 1,154,990 | 1,171,245 | 1,176,244 | 1,177,994 | 1,187,851 | 1,204,102 | 1,179,570 | 1,194,399 | 1,202,621 | 1,214,303 | 1,191,201 | 1,186,157 | |
| 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 | 9,950 | 9,846 | 9,479 | 9,590 | 9,653 | 9,720 | 9,741 | 9,812 | 9,968 | 9,932 | 10,012 | 10,088 | 10,037 | 10,062 | 10,008 | 10,112 | 9,993 | 9,963 | 10,000 | 9,964 | 10,079 | 10,087 | 10,112 | 10,138 | 10,072 | 10,010 | 10,121 | 10,242 | 10,319 | 10,375 | 10,539 | 10,578 | 10,724 | 10,764 | 10,850 | 11,022 | 10,933 | 10,953 | 10,980 | 11,014 | 11,212 | 11,356 | 10,944 | 10,807 | 11,151 | 11,242 | 11,432 | 11,378 | 11,381 | 11,346 | 11,518 | 11,588 | 11,662 | 11,476 | 11,547 | 11,644 | 11,679 | 11,711 | 11,808 | 11,765 | 11,680 | 11,645 | 11,745 | 11,764 | 11,442 | 11,401 | 11,031 | 10,726 | 10,885 | 10,707 | 10,990 | 10,749 | 10,336 | 10,250 | 10,730 | 10,761 | 11,070 | 10,819 | 11,059 | 11,034 | 10,939 | 11,048 | 11,092 | 10,932 | 10,612 | 10,521 | 11,189 | 11,449 | 11,391 | 11,406 | 11,405 | 11,264 | 11,231 | 11,403 | 11,507 | 11,598 | 11,712 | 11,542 | 11,741 | 11,570 | 11,628 | 11,743 | 11,544 | 11,451 | 11,459 | 11,530 | 11,507 | 11,607 | 11,876 | 12,023 | 12,050 | 12,061 | 12,174 | 12,326 | 12,040 | 12,178 | 12,223 | 12,341 | 12,113 | 12,085 | |
| 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 | 9,950 | 9,846 | 9,479 | 9,590 | 9,653 | 9,720 | 9,741 | 9,812 | 9,968 | 9,932 | 10,012 | 10,088 | 10,037 | 10,062 | 10,008 | 10,112 | 9,993 | 9,963 | 10,000 | 9,964 | 10,079 | 10,087 | 10,112 | 10,138 | 10,072 | 10,010 | 10,121 | 10,242 | 10,319 | 10,375 | 10,539 | 10,578 | 10,724 | 10,764 | 10,850 | 11,022 | 10,933 | 10,953 | 10,980 | 11,014 | 11,212 | 11,356 | 10,944 | 10,807 | 11,151 | 11,242 | 11,432 | 11,378 | 11,381 | 11,346 | 11,518 | 11,588 | 11,662 | 11,476 | 11,547 | 11,644 | 11,679 | 11,711 | 11,808 | 11,765 | 11,680 | 11,645 | 11,745 | 11,764 | 11,442 | 11,401 | 11,031 | 10,726 | 10,885 | 10,707 | 10,990 | 10,749 | 10,336 | 10,250 | 10,730 | 10,761 | 11,070 | 10,819 | 11,059 | 11,034 | 10,939 | 11,048 | 11,092 | 10,932 | 10,612 | 10,521 | 11,189 | 11,449 | 11,391 | 11,406 | 11,405 | 11,264 | 11,231 | 11,403 | 11,507 | 11,598 | 11,712 | 11,542 | 11,741 | 11,570 | 11,628 | 11,743 | 11,544 | 11,451 | 11,459 | 11,530 | 11,507 | 11,607 | 11,876 | 12,023 | 12,050 | 12,061 | 12,174 | 12,326 | 12,040 | 12,178 | 12,223 | 12,341 | 12,113 | 12,085 | |
| 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 | 995,009 | 984,570 | 947,850 | 958,978 | 965,300 | 972,003 | 974,113 | 981,182 | 996,754 | 993,179 | 1,001,214 | 1,008,833 | 1,003,704 | 1,006,154 | 1,000,767 | 1,011,227 | 999,322 | 996,336 | 1,000,013 | 996,445 | 1,007,855 | 1,008,715 | 1,011,163 | 1,013,760 | 1,007,197 | 1,000,994 | 1,012,073 | 1,024,191 | 1,031,933 | 1,037,459 | 1,053,858 | 1,057,819 | 1,072,403 | 1,076,362 | 1,085,037 | 1,102,152 | 1,093,317 | 1,095,276 | 1,098,016 | 1,101,368 | 1,121,156 | 1,135,614 | 1,094,422 | 1,080,687 | 1,115,065 | 1,124,242 | 1,143,177 | 1,137,813 | 1,138,054 | 1,134,636 | 1,151,758 | 1,158,774 | 1,166,159 | 1,147,630 | 1,154,708 | 1,164,393 | 1,167,867 | 1,171,074 | 1,180,786 | 1,176,453 | 1,167,963 | 1,164,548 | 1,174,461 | 1,176,356 | 1,144,156 | 1,140,057 | 1,103,100 | 1,072,589 | 1,088,522 | 1,070,693 | 1,098,983 | 1,074,897 | 1,033,642 | 1,025,046 | 1,072,991 | 1,076,063 | 1,106,973 | 1,081,942 | 1,105,948 | 1,103,421 | 1,093,859 | 1,104,817 | 1,109,187 | 1,093,219 | 1,061,178 | 1,052,148 | 1,118,940 | 1,144,946 | 1,139,098 | 1,140,561 | 1,140,525 | 1,126,400 | 1,123,096 | 1,140,311 | 1,150,704 | 1,159,779 | 1,171,242 | 1,154,164 | 1,174,101 | 1,157,008 | 1,162,807 | 1,174,336 | 1,154,434 | 1,145,133 | 1,145,869 | 1,153,002 | 1,150,674 | 1,160,675 | 1,187,554 | 1,202,283 | 1,205,041 | 1,206,125 | 1,217,445 | 1,232,618 | 1,203,989 | 1,217,775 | 1,222,322 | 1,234,103 | 1,211,258 | 1,208,488 | |
| 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 | 9,950 | 9,846 | 9,479 | 9,590 | 9,653 | 9,720 | 9,741 | 9,812 | 9,968 | 9,932 | 10,012 | 10,088 | 10,037 | 10,062 | 10,008 | 10,112 | 9,993 | 9,963 | 10,000 | 9,964 | 10,079 | 10,087 | 10,112 | 10,138 | 10,072 | 10,010 | 10,121 | 10,242 | 10,319 | 10,375 | 10,539 | 10,578 | 10,724 | 10,764 | 10,850 | 11,022 | 10,933 | 10,953 | 10,980 | 11,014 | 11,212 | 11,356 | 10,944 | 10,807 | 11,151 | 11,242 | 11,432 | 11,378 | 11,381 | 11,346 | 11,518 | 11,588 | 11,662 | 11,476 | 11,547 | 11,644 | 11,679 | 11,711 | 11,808 | 11,765 | 11,680 | 11,645 | 11,745 | 11,764 | 11,442 | 11,401 | 11,031 | 10,726 | 10,885 | 10,707 | 10,990 | 10,749 | 10,336 | 10,250 | 10,730 | 10,761 | 11,070 | 10,819 | 11,059 | 11,034 | 10,939 | 11,048 | 11,092 | 10,932 | 10,612 | 10,521 | 11,189 | 11,449 | 11,391 | 11,406 | 11,405 | 11,264 | 11,231 | 11,403 | 11,507 | 11,598 | 11,712 | 11,542 | 11,741 | 11,570 | 11,628 | 11,743 | 11,544 | 11,451 | 11,459 | 11,530 | 11,507 | 11,607 | 11,876 | 12,023 | 12,050 | 12,061 | 12,174 | 12,326 | 12,040 | 12,178 | 12,223 | 12,341 | 12,113 | 12,085 | |
| 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 | 9,950 | 9,846 | 9,479 | 9,590 | 9,653 | 9,720 | 9,741 | 9,812 | 9,968 | 9,932 | 10,012 | 10,088 | 10,037 | 10,062 | 10,008 | 10,112 | 9,993 | 9,963 | 10,000 | 9,964 | 10,079 | 10,087 | 10,112 | 10,138 | 10,072 | 10,010 | 10,121 | 10,242 | 10,319 | 10,375 | 10,539 | 10,578 | 10,724 | 10,764 | 10,850 | 11,022 | 10,933 | 10,953 | 10,980 | 11,014 | 11,212 | 11,356 | 10,944 | 10,807 | 11,151 | 11,242 | 11,432 | 11,378 | 11,381 | 11,346 | 11,518 | 11,588 | 11,662 | 11,476 | 11,547 | 11,644 | 11,679 | 11,711 | 11,808 | 11,765 | 11,680 | 11,645 | 11,745 | 11,764 | 11,442 | 11,401 | 11,031 | 10,726 | 10,885 | 10,707 | 10,990 | 10,749 | 10,336 | 10,250 | 10,730 | 10,761 | 11,070 | 10,819 | 11,059 | 11,034 | 10,939 | 11,048 | 11,092 | 10,932 | 10,612 | 10,521 | 11,189 | 11,449 | 11,391 | 11,406 | 11,405 | 11,264 | 11,231 | 11,403 | 11,507 | 11,598 | 11,712 | 11,542 | 11,741 | 11,570 | 11,628 | 11,743 | 11,544 | 11,451 | 11,459 | 11,530 | 11,507 | 11,607 | 11,876 | 12,023 | 12,050 | 12,061 | 12,174 | 12,326 | 12,040 | 12,178 | 12,223 | 12,341 | 12,113 | 12,085 | |
| 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 | 995,009 | 984,570 | 947,850 | 958,978 | 965,300 | 972,003 | 974,113 | 981,182 | 996,754 | 993,179 | 1,001,214 | 1,008,833 | 1,003,704 | 1,006,154 | 1,000,767 | 1,011,227 | 999,322 | 996,336 | 1,000,013 | 996,445 | 1,007,855 | 1,008,715 | 1,011,163 | 1,013,760 | 1,007,197 | 1,000,994 | 1,012,073 | 1,024,191 | 1,031,933 | 1,037,459 | 1,053,858 | 1,057,819 | 1,072,403 | 1,076,362 | 1,085,037 | 1,102,152 | 1,093,317 | 1,095,276 | 1,098,016 | 1,101,368 | 1,121,156 | 1,135,614 | 1,094,422 | 1,080,687 | 1,115,065 | 1,124,242 | 1,143,177 | 1,137,813 | 1,138,054 | 1,134,636 | 1,151,758 | 1,158,774 | 1,166,159 | 1,147,630 | 1,154,708 | 1,164,393 | 1,167,867 | 1,171,074 | 1,180,786 | 1,176,453 | 1,167,963 | 1,164,548 | 1,174,461 | 1,176,356 | 1,144,156 | 1,140,057 | 1,103,100 | 1,072,589 | 1,088,522 | 1,070,693 | 1,098,983 | 1,074,897 | 1,033,642 | 1,025,046 | 1,072,991 | 1,076,063 | 1,106,973 | 1,081,942 | 1,105,948 | 1,103,421 | 1,093,859 | 1,104,817 | 1,109,187 | 1,093,219 | 1,061,178 | 1,052,148 | 1,118,940 | 1,144,946 | 1,139,098 | 1,140,561 | 1,140,525 | 1,126,400 | 1,123,096 | 1,140,311 | 1,150,704 | 1,159,779 | 1,171,242 | 1,154,164 | 1,174,101 | 1,157,008 | 1,162,807 | 1,174,336 | 1,154,434 | 1,145,133 | 1,145,869 | 1,153,002 | 1,150,674 | 1,160,675 | 1,187,554 | 1,202,283 | 1,205,041 | 1,206,125 | 1,217,445 | 1,232,618 | 1,203,989 | 1,217,775 | 1,222,322 | 1,234,103 | 1,211,258 | 1,208,488 | |
| 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 | 9,950 | 9,846 | 9,479 | 9,590 | 9,653 | 9,720 | 9,741 | 9,812 | 9,968 | 9,932 | 10,012 | 10,088 | 10,037 | 10,062 | 10,008 | 10,112 | 9,993 | 9,963 | 10,000 | 9,964 | 10,079 | 10,087 | 10,112 | 10,138 | 10,072 | 10,010 | 10,121 | 10,242 | 10,319 | 10,375 | 10,539 | 10,578 | 10,724 | 10,764 | 10,850 | 11,022 | 10,933 | 10,953 | 10,980 | 11,014 | 11,212 | 11,356 | 10,944 | 10,807 | 11,151 | 11,242 | 11,432 | 11,378 | 11,381 | 11,346 | 11,518 | 11,588 | 11,662 | 11,476 | 11,547 | 11,644 | 11,679 | 11,711 | 11,808 | 11,765 | 11,680 | 11,645 | 11,745 | 11,764 | 11,442 | 11,401 | 11,031 | 10,726 | 10,885 | 10,707 | 10,990 | 10,749 | 10,336 | 10,250 | 10,730 | 10,761 | 11,070 | 10,819 | 11,059 | 11,034 | 10,939 | 11,048 | 11,092 | 10,932 | 10,612 | 10,521 | 11,189 | 11,449 | 11,391 | 11,406 | 11,405 | 11,264 | 11,231 | 11,403 | 11,507 | 11,598 | 11,712 | 11,542 | 11,741 | 11,570 | 11,628 | 11,743 | 11,544 | 11,451 | 11,459 | 11,530 | 11,507 | 11,607 | 11,876 | 12,023 | 12,050 | 12,061 | 12,174 | 12,326 | 12,040 | 12,178 | 12,223 | 12,341 | 12,113 | 12,085 | |
| 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 | 9,950 | 9,846 | 9,479 | 9,590 | 9,653 | 9,720 | 9,741 | 9,812 | 9,968 | 9,932 | 10,012 | 10,088 | 10,037 | 10,062 | 10,008 | 10,112 | 9,993 | 9,963 | 10,000 | 9,964 | 10,079 | 10,087 | 10,112 | 10,138 | 10,072 | 10,010 | 10,121 | 10,242 | 10,319 | 10,375 | 10,539 | 10,578 | 10,724 | 10,764 | 10,850 | 11,022 | 10,933 | 10,953 | 10,980 | 11,014 | 11,212 | 11,356 | 10,944 | 10,807 | 11,151 | 11,242 | 11,432 | 11,378 | 11,381 | 11,346 | 11,518 | 11,588 | 11,662 | 11,476 | 11,547 | 11,644 | 11,679 | 11,711 | 11,808 | 11,765 | 11,680 | 11,645 | 11,745 | 11,764 | 11,442 | 11,401 | 11,031 | 10,726 | 10,885 | 10,707 | 10,990 | 10,749 | 10,336 | 10,250 | 10,730 | 10,761 | 11,070 | 10,819 | 11,059 | 11,034 | 10,939 | 11,048 | 11,092 | 10,932 | 10,612 | 10,521 | 11,189 | 11,449 | 11,391 | 11,406 | 11,405 | 11,264 | 11,231 | 11,403 | 11,507 | 11,598 | 11,712 | 11,542 | 11,741 | 11,570 | 11,628 | 11,743 | 11,544 | 11,451 | 11,459 | 11,530 | 11,507 | 11,607 | 11,876 | 12,023 | 12,050 | 12,061 | 12,174 | 12,326 | 12,040 | 12,178 | 12,223 | 12,341 | 12,113 | 12,085 | |
| 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 | 995,009 | 984,570 | 947,850 | 958,978 | 965,300 | 972,003 | 974,113 | 981,182 | 996,754 | 993,179 | 1,001,214 | 1,008,833 | 1,003,704 | 1,006,154 | 1,000,767 | 1,011,227 | 999,322 | 996,336 | 1,000,013 | 996,445 | 1,007,855 | 1,008,715 | 1,011,163 | 1,013,760 | 1,007,197 | 1,000,994 | 1,012,073 | 1,024,191 | 1,031,933 | 1,037,459 | 1,053,858 | 1,057,819 | 1,072,403 | 1,076,362 | 1,085,037 | 1,102,152 | 1,093,317 | 1,095,276 | 1,098,016 | 1,101,368 | 1,121,156 | 1,135,614 | 1,094,422 | 1,080,687 | 1,115,065 | 1,124,242 | 1,143,177 | 1,137,813 | 1,138,054 | 1,134,636 | 1,151,758 | 1,158,774 | 1,166,159 | 1,147,630 | 1,154,708 | 1,164,393 | 1,167,867 | 1,171,074 | 1,180,786 | 1,176,453 | 1,167,963 | 1,164,548 | 1,174,461 | 1,176,356 | 1,144,156 | 1,140,057 | 1,103,100 | 1,072,589 | 1,088,522 | 1,070,693 | 1,098,983 | 1,074,897 | 1,033,642 | 1,025,046 | 1,072,991 | 1,076,063 | 1,106,973 | 1,081,942 | 1,105,948 | 1,103,421 | 1,093,859 | 1,104,817 | 1,109,187 | 1,093,219 | 1,061,178 | 1,052,148 | 1,118,940 | 1,144,946 | 1,139,098 | 1,140,561 | 1,140,525 | 1,126,400 | 1,123,096 | 1,140,311 | 1,150,704 | 1,159,779 | 1,171,242 | 1,154,164 | 1,174,101 | 1,157,008 | 1,162,807 | 1,174,336 | 1,154,434 | 1,145,133 | 1,145,869 | 1,153,002 | 1,150,674 | 1,160,675 | 1,187,554 | 1,202,283 | 1,205,041 | 1,206,125 | 1,217,445 | 1,232,618 | 1,203,989 | 1,217,775 | 1,222,322 | 1,234,103 | 1,211,258 | 1,208,488 | |
| 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 | 9,950 | 9,846 | 9,479 | 9,590 | 9,653 | 9,720 | 9,741 | 9,812 | 9,968 | 9,932 | 10,012 | 10,088 | 10,037 | 10,062 | 10,008 | 10,112 | 9,993 | 9,963 | 10,000 | 9,964 | 10,079 | 10,087 | 10,112 | 10,138 | 10,072 | 10,010 | 10,121 | 10,242 | 10,319 | 10,375 | 10,539 | 10,578 | 10,724 | 10,764 | 10,850 | 11,022 | 10,933 | 10,953 | 10,980 | 11,014 | 11,212 | 11,356 | 10,944 | 10,807 | 11,151 | 11,242 | 11,432 | 11,378 | 11,381 | 11,346 | 11,518 | 11,588 | 11,662 | 11,476 | 11,547 | 11,644 | 11,679 | 11,711 | 11,808 | 11,765 | 11,680 | 11,645 | 11,745 | 11,764 | 11,442 | 11,401 | 11,031 | 10,726 | 10,885 | 10,707 | 10,990 | 10,749 | 10,336 | 10,250 | 10,730 | 10,761 | 11,070 | 10,819 | 11,059 | 11,034 | 10,939 | 11,048 | 11,092 | 10,932 | 10,612 | 10,521 | 11,189 | 11,449 | 11,391 | 11,406 | 11,405 | 11,264 | 11,231 | 11,403 | 11,507 | 11,598 | 11,712 | 11,542 | 11,741 | 11,570 | 11,628 | 11,743 | 11,544 | 11,451 | 11,459 | 11,530 | 11,507 | 11,607 | 11,876 | 12,023 | 12,050 | 12,061 | 12,174 | 12,326 | 12,040 | 12,178 | 12,223 | 12,341 | 12,113 | 12,085 | |
| 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 | 9,950 | 9,846 | 9,479 | 9,590 | 9,653 | 9,720 | 9,741 | 9,812 | 9,968 | 9,932 | 10,012 | 10,088 | 10,037 | 10,062 | 10,008 | 10,112 | 9,993 | 9,963 | 10,000 | 9,964 | 10,079 | 10,087 | 10,112 | 10,138 | 10,072 | 10,010 | 10,121 | 10,242 | 10,319 | 10,375 | 10,539 | 10,578 | 10,724 | 10,764 | 10,850 | 11,022 | 10,933 | 10,953 | 10,980 | 11,014 | 11,212 | 11,356 | 10,944 | 10,807 | 11,151 | 11,242 | 11,432 | 11,378 | 11,381 | 11,346 | 11,518 | 11,588 | 11,662 | 11,476 | 11,547 | 11,644 | 11,679 | 11,711 | 11,808 | 11,765 | 11,680 | 11,645 | 11,745 | 11,764 | 11,442 | 11,401 | 11,031 | 10,726 | 10,885 | 10,707 | 10,990 | 10,749 | 10,336 | 10,250 | 10,730 | 10,761 | 11,070 | 10,819 | 11,059 | 11,034 | 10,939 | 11,048 | 11,092 | 10,932 | 10,612 | 10,521 | 11,189 | 11,449 | 11,391 | 11,406 | 11,405 | 11,264 | 11,231 | 11,403 | 11,507 | 11,598 | 11,712 | 11,542 | 11,741 | 11,570 | 11,628 | 11,743 | 11,544 | 11,451 | 11,459 | 11,530 | 11,507 | 11,607 | 11,876 | 12,023 | 12,050 | 12,061 | 12,174 | 12,326 | 12,040 | 12,178 | 12,223 | 12,341 | 12,113 | 12,085 | |
| 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 | 995,009 | 984,570 | 947,850 | 958,978 | 965,300 | 972,003 | 974,113 | 981,182 | 996,754 | 993,179 | 1,001,214 | 1,008,833 | 1,003,704 | 1,006,154 | 1,000,767 | 1,011,227 | 999,322 | 996,336 | 1,000,013 | 996,445 | 1,007,855 | 1,008,715 | 1,011,163 | 1,013,760 | 1,007,197 | 1,000,994 | 1,012,073 | 1,024,191 | 1,031,933 | 1,037,459 | 1,053,858 | 1,057,819 | 1,072,403 | 1,076,362 | 1,085,037 | 1,102,152 | 1,093,317 | 1,095,276 | 1,098,016 | 1,101,368 | 1,121,156 | 1,135,614 | 1,094,422 | 1,080,687 | 1,115,065 | 1,124,242 | 1,143,177 | 1,137,813 | 1,138,054 | 1,134,636 | 1,151,758 | 1,158,774 | 1,166,159 | 1,147,630 | 1,154,708 | 1,164,393 | 1,167,867 | 1,171,074 | 1,180,786 | 1,176,453 | 1,167,963 | 1,164,548 | 1,174,461 | 1,176,356 | 1,144,156 | 1,140,057 | 1,103,100 | 1,072,589 | 1,088,522 | 1,070,693 | 1,098,983 | 1,074,897 | 1,033,642 | 1,025,046 | 1,072,991 | 1,076,063 | 1,106,973 | 1,081,942 | 1,105,948 | 1,103,421 | 1,093,859 | 1,104,817 | 1,109,187 | 1,093,219 | 1,061,178 | 1,052,148 | 1,118,940 | 1,144,946 | 1,139,098 | 1,140,561 | 1,140,525 | 1,126,400 | 1,123,096 | 1,140,311 | 1,150,704 | 1,159,779 | 1,171,242 | 1,154,164 | 1,174,101 | 1,157,008 | 1,162,807 | 1,174,336 | 1,154,434 | 1,145,133 | 1,145,869 | 1,153,002 | 1,150,674 | 1,160,675 | 1,187,554 | 1,202,283 | 1,205,041 | 1,206,125 | 1,217,445 | 1,232,618 | 1,203,989 | 1,217,775 | 1,222,322 | 1,234,103 | 1,211,258 | 1,208,488 | |
| 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 | 9,950 | 9,846 | 9,479 | 9,590 | 9,653 | 9,720 | 9,741 | 9,812 | 9,968 | 9,932 | 10,012 | 10,088 | 10,037 | 10,062 | 10,008 | 10,112 | 9,993 | 9,963 | 10,000 | 9,964 | 10,079 | 10,087 | 10,112 | 10,138 | 10,072 | 10,010 | 10,121 | 10,242 | 10,319 | 10,375 | 10,539 | 10,578 | 10,724 | 10,764 | 10,850 | 11,022 | 10,933 | 10,953 | 10,980 | 11,014 | 11,212 | 11,356 | 10,944 | 10,807 | 11,151 | 11,242 | 11,432 | 11,378 | 11,381 | 11,346 | 11,518 | 11,588 | 11,662 | 11,476 | 11,547 | 11,644 | 11,679 | 11,711 | 11,808 | 11,765 | 11,680 | 11,645 | 11,745 | 11,764 | 11,442 | 11,401 | 11,031 | 10,726 | 10,885 | 10,707 | 10,990 | 10,749 | 10,336 | 10,250 | 10,730 | 10,761 | 11,070 | 10,819 | 11,059 | 11,034 | 10,939 | 11,048 | 11,092 | 10,932 | 10,612 | 10,521 | 11,189 | 11,449 | 11,391 | 11,406 | 11,405 | 11,264 | 11,231 | 11,403 | 11,507 | 11,598 | 11,712 | 11,542 | 11,741 | 11,570 | 11,628 | 11,743 | 11,544 | 11,451 | 11,459 | 11,530 | 11,507 | 11,607 | 11,876 | 12,023 | 12,050 | 12,061 | 12,174 | 12,326 | 12,040 | 12,178 | 12,223 | 12,341 | 12,113 | 12,085 | |
| 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 | 9,950 | 9,846 | 9,479 | 9,590 | 9,653 | 9,720 | 9,741 | 9,812 | 9,968 | 9,932 | 10,012 | 10,088 | 10,037 | 10,062 | 10,008 | 10,112 | 9,993 | 9,963 | 10,000 | 9,964 | 10,079 | 10,087 | 10,112 | 10,138 | 10,072 | 10,010 | 10,121 | 10,242 | 10,319 | 10,375 | 10,539 | 10,578 | 10,724 | 10,764 | 10,850 | 11,022 | 10,933 | 10,953 | 10,980 | 11,014 | 11,212 | 11,356 | 10,944 | 10,807 | 11,151 | 11,242 | 11,432 | 11,378 | 11,381 | 11,346 | 11,518 | 11,588 | 11,662 | 11,476 | 11,547 | 11,644 | 11,679 | 11,711 | 11,808 | 11,765 | 11,680 | 11,645 | 11,745 | 11,764 | 11,442 | 11,401 | 11,031 | 10,726 | 10,885 | 10,707 | 10,990 | 10,749 | 10,336 | 10,250 | 10,730 | 10,761 | 11,070 | 10,819 | 11,059 | 11,034 | 10,939 | 11,048 | 11,092 | 10,932 | 10,612 | 10,521 | 11,189 | 11,449 | 11,391 | 11,406 | 11,405 | 11,264 | 11,231 | 11,403 | 11,507 | 11,598 | 11,712 | 11,542 | 11,741 | 11,570 | 11,628 | 11,743 | 11,544 | 11,451 | 11,459 | 11,530 | 11,507 | 11,607 | 11,876 | 12,023 | 12,050 | 12,061 | 12,174 | 12,326 | 12,040 | 12,178 | 12,223 | 12,341 | 12,113 | 12,085 | |
| 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 | 995,009 | 984,570 | 947,850 | 958,978 | 965,300 | 972,003 | 974,113 | 981,182 | 996,754 | 993,179 | 1,001,214 | 1,008,833 | 1,003,704 | 1,006,154 | 1,000,767 | 1,011,227 | 999,322 | 996,336 | 1,000,013 | 996,445 | 1,007,855 | 1,008,715 | 1,011,163 | 1,013,760 | 1,007,197 | 1,000,994 | 1,012,073 | 1,024,191 | 1,031,933 | 1,037,459 | 1,053,858 | 1,057,819 | 1,072,403 | 1,076,362 | 1,085,037 | 1,102,152 | 1,093,317 | 1,095,276 | 1,098,016 | 1,101,368 | 1,121,156 | 1,135,614 | 1,094,422 | 1,080,687 | 1,115,065 | 1,124,242 | 1,143,177 | 1,137,813 | 1,138,054 | 1,134,636 | 1,151,758 | 1,158,774 | 1,166,159 | 1,147,630 | 1,154,708 | 1,164,393 | 1,167,867 | 1,171,074 | 1,180,786 | 1,176,453 | 1,167,963 | 1,164,548 | 1,174,461 | 1,176,356 | 1,144,156 | 1,140,057 | 1,103,100 | 1,072,589 | 1,088,522 | 1,070,693 | 1,098,983 | 1,074,897 | 1,033,642 | 1,025,046 | 1,072,991 | 1,076,063 | 1,106,973 | 1,081,942 | 1,105,948 | 1,103,421 | 1,093,859 | 1,104,817 | 1,109,187 | 1,093,219 | 1,061,178 | 1,052,148 | 1,118,940 | 1,144,946 | 1,139,098 | 1,140,561 | 1,140,525 | 1,126,400 | 1,123,096 | 1,140,311 | 1,150,704 | 1,159,779 | 1,171,242 | 1,154,164 | 1,174,101 | 1,157,008 | 1,162,807 | 1,174,336 | 1,154,434 | 1,145,133 | 1,145,869 | 1,153,002 | 1,150,674 | 1,160,675 | 1,187,554 | 1,202,283 | 1,205,041 | 1,206,125 | 1,217,445 | 1,232,618 | 1,203,989 | 1,217,775 | 1,222,322 | 1,234,103 | 1,211,258 | 1,208,488 | |
| 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 | 9,950 | 9,846 | 9,479 | 9,590 | 9,653 | 9,720 | 9,741 | 9,812 | 9,968 | 9,932 | 10,012 | 10,088 | 10,037 | 10,062 | 10,008 | 10,112 | 9,993 | 9,963 | 10,000 | 9,964 | 10,079 | 10,087 | 10,112 | 10,138 | 10,072 | 10,010 | 10,121 | 10,242 | 10,319 | 10,375 | 10,539 | 10,578 | 10,724 | 10,764 | 10,850 | 11,022 | 10,933 | 10,953 | 10,980 | 11,014 | 11,212 | 11,356 | 10,944 | 10,807 | 11,151 | 11,242 | 11,432 | 11,378 | 11,381 | 11,346 | 11,518 | 11,588 | 11,662 | 11,476 | 11,547 | 11,644 | 11,679 | 11,711 | 11,808 | 11,765 | 11,680 | 11,645 | 11,745 | 11,764 | 11,442 | 11,401 | 11,031 | 10,726 | 10,885 | 10,707 | 10,990 | 10,749 | 10,336 | 10,250 | 10,730 | 10,761 | 11,070 | 10,819 | 11,059 | 11,034 | 10,939 | 11,048 | 11,092 | 10,932 | 10,612 | 10,521 | 11,189 | 11,449 | 11,391 | 11,406 | 11,405 | 11,264 | 11,231 | 11,403 | 11,507 | 11,598 | 11,712 | 11,542 | 11,741 | 11,570 | 11,628 | 11,743 | 11,544 | 11,451 | 11,459 | 11,530 | 11,507 | 11,607 | 11,876 | 12,023 | 12,050 | 12,061 | 12,174 | 12,326 | 12,040 | 12,178 | 12,223 | 12,341 | 12,113 | 12,085 | |
| 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 | 9,950 | 9,846 | 9,479 | 9,590 | 9,653 | 9,720 | 9,741 | 9,812 | 9,968 | 9,932 | 10,012 | 10,088 | 10,037 | 10,062 | 10,008 | 10,112 | 9,993 | 9,963 | 10,000 | 9,964 | 10,079 | 10,087 | 10,112 | 10,138 | 10,072 | 10,010 | 10,121 | 10,242 | 10,319 | 10,375 | 10,539 | 10,578 | 10,724 | 10,764 | 10,850 | 11,022 | 10,933 | 10,953 | 10,980 | 11,014 | 11,212 | 11,356 | 10,944 | 10,807 | 11,151 | 11,242 | 11,432 | 11,378 | 11,381 | 11,346 | 11,518 | 11,588 | 11,662 | 11,476 | 11,547 | 11,644 | 11,679 | 11,711 | 11,808 | 11,765 | 11,680 | 11,645 | 11,745 | 11,764 | 11,442 | 11,401 | 11,031 | 10,726 | 10,885 | 10,707 | 10,990 | 10,749 | 10,336 | 10,250 | 10,730 | 10,761 | 11,070 | 10,819 | 11,059 | 11,034 | 10,939 | 11,048 | 11,092 | 10,932 | 10,612 | 10,521 | 11,189 | 11,449 | 11,391 | 11,406 | 11,405 | 11,264 | 11,231 | 11,403 | 11,507 | 11,598 | 11,712 | 11,542 | 11,741 | 11,570 | 11,628 | 11,743 | 11,544 | 11,451 | 11,459 | 11,530 | 11,507 | 11,607 | 11,876 | 12,023 | 12,050 | 12,061 | 12,174 | 12,326 | 12,040 | 12,178 | 12,223 | 12,341 | 12,113 | 12,085 | |
| 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 | 995,009 | 984,570 | 947,850 | 958,978 | 965,300 | 972,003 | 974,113 | 981,182 | 996,754 | 993,179 | 1,001,214 | 1,008,833 | 1,003,704 | 1,006,154 | 1,000,767 | 1,011,227 | 999,322 | 996,336 | 1,000,013 | 996,445 | 1,007,855 | 1,008,715 | 1,011,163 | 1,013,760 | 1,007,197 | 1,000,994 | 1,012,073 | 1,024,191 | 1,031,933 | 1,037,459 | 1,053,858 | 1,057,819 | 1,072,403 | 1,076,362 | 1,085,037 | 1,102,152 | 1,093,317 | 1,095,276 | 1,098,016 | 1,101,368 | 1,121,156 | 1,135,614 | 1,094,422 | 1,080,687 | 1,115,065 | 1,124,242 | 1,143,177 | 1,137,813 | 1,138,054 | 1,134,636 | 1,151,758 | 1,158,774 | 1,166,159 | 1,147,630 | 1,154,708 | 1,164,393 | 1,167,867 | 1,171,074 | 1,180,786 | 1,176,453 | 1,167,963 | 1,164,548 | 1,174,461 | 1,176,356 | 1,144,156 | 1,140,057 | 1,103,100 | 1,072,589 | 1,088,522 | 1,070,693 | 1,098,983 | 1,074,897 | 1,033,642 | 1,025,046 | 1,072,991 | 1,076,063 | 1,106,973 | 1,081,942 | 1,105,948 | 1,103,421 | 1,093,859 | 1,104,817 | 1,109,187 | 1,093,219 | 1,061,178 | 1,052,148 | 1,118,940 | 1,144,946 | 1,139,098 | 1,140,561 | 1,140,525 | 1,126,400 | 1,123,096 | 1,140,311 | 1,150,704 | 1,159,779 | 1,171,242 | 1,154,164 | 1,174,101 | 1,157,008 | 1,162,807 | 1,174,336 | 1,154,434 | 1,145,133 | 1,145,869 | 1,153,002 | 1,150,674 | 1,160,675 | 1,187,554 | 1,202,283 | 1,205,041 | 1,206,125 | 1,217,445 | 1,232,618 | 1,203,989 | 1,217,775 | 1,222,322 | 1,234,103 | 1,211,258 | 1,208,488 | |
| 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 | 9,950 | 9,846 | 9,479 | 9,590 | 9,653 | 9,720 | 9,741 | 9,812 | 9,968 | 9,932 | 10,012 | 10,088 | 10,037 | 10,062 | 10,008 | 10,112 | 9,993 | 9,963 | 10,000 | 9,964 | 10,079 | 10,087 | 10,112 | 10,138 | 10,072 | 10,010 | 10,121 | 10,242 | 10,319 | 10,375 | 10,539 | 10,578 | 10,724 | 10,764 | 10,850 | 11,022 | 10,933 | 10,953 | 10,980 | 11,014 | 11,212 | 11,356 | 10,944 | 10,807 | 11,151 | 11,242 | 11,432 | 11,378 | 11,381 | 11,346 | 11,518 | 11,588 | 11,662 | 11,476 | 11,547 | 11,644 | 11,679 | 11,711 | 11,808 | 11,765 | 11,680 | 11,645 | 11,745 | 11,764 | 11,442 | 11,401 | 11,031 | 10,726 | 10,885 | 10,707 | 10,990 | 10,749 | 10,336 | 10,250 | 10,730 | 10,761 | 11,070 | 10,819 | 11,059 | 11,034 | 10,939 | 11,048 | 11,092 | 10,932 | 10,612 | 10,521 | 11,189 | 11,449 | 11,391 | 11,406 | 11,405 | 11,264 | 11,231 | 11,403 | 11,507 | 11,598 | 11,712 | 11,542 | 11,741 | 11,570 | 11,628 | 11,743 | 11,544 | 11,451 | 11,459 | 11,530 | 11,507 | 11,607 | 11,876 | 12,023 | 12,050 | 12,061 | 12,174 | 12,326 | 12,040 | 12,178 | 12,223 | 12,341 | 12,113 | 12,085 | |
| 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 | 9,950 | 9,846 | 9,479 | 9,590 | 9,653 | 9,720 | 9,741 | 9,812 | 9,968 | 9,932 | 10,012 | 10,088 | 10,037 | 10,062 | 10,008 | 10,112 | 9,993 | 9,963 | 10,000 | 9,964 | 10,079 | 10,087 | 10,112 | 10,138 | 10,072 | 10,010 | 10,121 | 10,242 | 10,319 | 10,375 | 10,539 | 10,578 | 10,724 | 10,764 | 10,850 | 11,022 | 10,933 | 10,953 | 10,980 | 11,014 | 11,212 | 11,356 | 10,944 | 10,807 | 11,151 | 11,242 | 11,432 | 11,378 | 11,381 | 11,346 | 11,518 | 11,588 | 11,662 | 11,476 | 11,547 | 11,644 | 11,679 | 11,711 | 11,808 | 11,765 | 11,680 | 11,645 | 11,745 | 11,764 | 11,442 | 11,401 | 11,031 | 10,726 | 10,885 | 10,707 | 10,990 | 10,749 | 10,336 | 10,250 | 10,730 | 10,761 | 11,070 | 10,819 | 11,059 | 11,034 | 10,939 | 11,048 | 11,092 | 10,932 | 10,612 | 10,521 | 11,189 | 11,449 | 11,391 | 11,406 | 11,405 | 11,264 | 11,231 | 11,403 | 11,507 | 11,598 | 11,712 | 11,542 | 11,741 | 11,570 | 11,628 | 11,743 | 11,544 | 11,451 | 11,459 | 11,530 | 11,507 | 11,607 | 11,876 | 12,023 | 12,050 | 12,061 | 12,174 | 12,326 | 12,040 | 12,178 | 12,223 | 12,341 | 12,113 | 12,085 | |
| 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 | 995,009 | 984,570 | 947,850 | 958,978 | 965,300 | 972,003 | 974,113 | 981,182 | 996,754 | 993,179 | 1,001,214 | 1,008,833 | 1,003,704 | 1,006,154 | 1,000,767 | 1,011,227 | 999,322 | 996,336 | 1,000,013 | 996,445 | 1,007,855 | 1,008,715 | 1,011,163 | 1,013,760 | 1,007,197 | 1,000,994 | 1,012,073 | 1,024,191 | 1,031,933 | 1,037,459 | 1,053,858 | 1,057,819 | 1,072,403 | 1,076,362 | 1,085,037 | 1,102,152 | 1,093,317 | 1,095,276 | 1,098,016 | 1,101,368 | 1,121,156 | 1,135,614 | 1,094,422 | 1,080,687 | 1,115,065 | 1,124,242 | 1,143,177 | 1,137,813 | 1,138,054 | 1,134,636 | 1,151,758 | 1,158,774 | 1,166,159 | 1,147,630 | 1,154,708 | 1,164,393 | 1,167,867 | 1,171,074 | 1,180,786 | 1,176,453 | 1,167,963 | 1,164,548 | 1,174,461 | 1,176,356 | 1,144,156 | 1,140,057 | 1,103,100 | 1,072,589 | 1,088,522 | 1,070,693 | 1,098,983 | 1,074,897 | 1,033,642 | 1,025,046 | 1,072,991 | 1,076,063 | 1,106,973 | 1,081,942 | 1,105,948 | 1,103,421 | 1,093,859 | 1,104,817 | 1,109,187 | 1,093,219 | 1,061,178 | 1,052,148 | 1,118,940 | 1,144,946 | 1,139,098 | 1,140,561 | 1,140,525 | 1,126,400 | 1,123,096 | 1,140,311 | 1,150,704 | 1,159,779 | 1,171,242 | 1,154,164 | 1,174,101 | 1,157,008 | 1,162,807 | 1,174,336 | 1,154,434 | 1,145,133 | 1,145,869 | 1,153,002 | 1,150,674 | 1,160,675 | 1,187,554 | 1,202,283 | 1,205,041 | 1,206,125 | 1,217,445 | 1,232,618 | 1,203,989 | 1,217,775 | 1,222,322 | 1,234,103 | 1,211,258 | 1,208,488 | |
| EATON VANCE Index: Bloomberg Georgia Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Georgia Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 9,951 | 9,869 | 9,539 | 9,640 | 9,699 | 9,759 | 9,771 | 9,832 | 9,973 | 9,938 | 10,003 | 10,068 | 10,013 | 10,035 | 9,981 | 10,069 | 9,964 | 9,947 | 9,970 | 9,938 | 10,037 | 10,051 | 10,068 | 10,085 | 10,025 | 9,974 | 10,083 | 10,191 | 10,267 | 10,317 | 10,459 | 10,495 | 10,634 | 10,678 | 10,759 | 10,916 | 10,812 | 10,837 | 10,867 | 10,902 | 11,090 | 11,234 | 10,826 | 10,723 | 11,058 | 11,168 | 11,341 | 11,312 | 11,329 | 11,303 | 11,449 | 11,489 | 11,547 | 11,373 | 11,440 | 11,517 | 11,537 | 11,558 | 11,648 | 11,611 | 11,534 | 11,494 | 11,592 | 11,605 | 11,307 | 11,269 | 10,909 | 10,630 | 10,764 | 10,608 | 10,869 | 10,633 | 10,220 | 10,120 | 10,585 | 10,600 | 10,902 | 10,660 | 10,877 | 10,878 | 10,773 | 10,872 | 10,912 | 10,779 | 10,472 | 10,399 | 11,027 | 11,280 | 11,214 | 11,238 | 11,258 | 11,136 | 11,112 | 11,271 | 11,399 | 11,482 | 11,605 | 11,460 | 11,622 | 11,455 | 11,540 | 11,639 | 11,496 | 11,413 | 11,445 | 11,529 | 11,529 | 11,638 | 11,857 | 11,972 | 12,004 | 12,006 | 12,116 | 12,264 | 11,998 | 12,128 | 12,175 | 12,281 | 12,095 | 12,081 | |
| EATON VANCE Index: Bloomberg Georgia Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Georgia Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 9,951 | 9,869 | 9,539 | 9,640 | 9,699 | 9,759 | 9,771 | 9,832 | 9,973 | 9,938 | 10,003 | 10,068 | 10,013 | 10,035 | 9,981 | 10,069 | 9,964 | 9,947 | 9,970 | 9,938 | 10,037 | 10,051 | 10,068 | 10,085 | 10,025 | 9,974 | 10,083 | 10,191 | 10,267 | 10,317 | 10,459 | 10,495 | 10,634 | 10,678 | 10,759 | 10,916 | 10,812 | 10,837 | 10,867 | 10,902 | 11,090 | 11,234 | 10,826 | 10,723 | 11,058 | 11,168 | 11,341 | 11,312 | 11,329 | 11,303 | 11,449 | 11,489 | 11,547 | 11,373 | 11,440 | 11,517 | 11,537 | 11,558 | 11,648 | 11,611 | 11,534 | 11,494 | 11,592 | 11,605 | 11,307 | 11,269 | 10,909 | 10,630 | 10,764 | 10,608 | 10,869 | 10,633 | 10,220 | 10,120 | 10,585 | 10,600 | 10,902 | 10,660 | 10,877 | 10,878 | 10,773 | 10,872 | 10,912 | 10,779 | 10,472 | 10,399 | 11,027 | 11,280 | 11,214 | 11,238 | 11,258 | 11,136 | 11,112 | 11,271 | 11,399 | 11,482 | 11,605 | 11,460 | 11,622 | 11,455 | 11,540 | 11,639 | 11,496 | 11,413 | 11,445 | 11,529 | 11,529 | 11,638 | 11,857 | 11,972 | 12,004 | 12,006 | 12,116 | 12,264 | 11,998 | 12,128 | 12,175 | 12,281 | 12,095 | 12,081 | |
| EATON VANCE Index: Bloomberg Georgia Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Georgia Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 995,059 | 986,889 | 953,943 | 964,030 | 969,899 | 975,928 | 977,068 | 983,245 | 997,297 | 993,792 | 1,000,300 | 1,006,795 | 1,001,319 | 1,003,489 | 998,098 | 1,006,892 | 996,363 | 994,692 | 997,040 | 993,822 | 1,003,650 | 1,005,108 | 1,006,808 | 1,008,484 | 1,002,463 | 997,381 | 1,008,285 | 1,019,075 | 1,026,666 | 1,031,706 | 1,045,851 | 1,049,470 | 1,063,412 | 1,067,820 | 1,075,861 | 1,091,554 | 1,081,220 | 1,083,737 | 1,086,650 | 1,090,247 | 1,108,961 | 1,123,436 | 1,082,641 | 1,072,341 | 1,105,814 | 1,116,820 | 1,134,149 | 1,131,158 | 1,132,892 | 1,130,250 | 1,144,857 | 1,148,931 | 1,154,668 | 1,137,252 | 1,144,046 | 1,151,746 | 1,153,741 | 1,155,754 | 1,164,795 | 1,161,057 | 1,153,436 | 1,149,350 | 1,159,193 | 1,160,459 | 1,130,685 | 1,126,883 | 1,090,892 | 1,063,009 | 1,076,423 | 1,060,824 | 1,086,878 | 1,063,332 | 1,021,972 | 1,011,997 | 1,058,520 | 1,059,961 | 1,090,247 | 1,066,028 | 1,087,672 | 1,087,787 | 1,077,275 | 1,087,188 | 1,091,242 | 1,077,922 | 1,047,232 | 1,039,895 | 1,102,728 | 1,127,970 | 1,121,422 | 1,123,756 | 1,125,772 | 1,113,639 | 1,111,226 | 1,127,124 | 1,139,902 | 1,148,241 | 1,160,505 | 1,145,974 | 1,162,222 | 1,145,524 | 1,154,043 | 1,163,909 | 1,149,641 | 1,141,289 | 1,144,464 | 1,152,913 | 1,152,888 | 1,163,833 | 1,185,714 | 1,197,178 | 1,200,361 | 1,200,625 | 1,211,638 | 1,226,364 | 1,199,761 | 1,212,757 | 1,217,539 | 1,228,068 | 1,209,452 | 1,208,061 | |
| EATON VANCE Index: Bloomberg Maryland Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Maryland Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 9,959 | 9,882 | 9,578 | 9,668 | 9,728 | 9,792 | 9,804 | 9,874 | 9,998 | 9,966 | 10,032 | 10,092 | 10,031 | 10,047 | 9,982 | 10,076 | 9,966 | 9,941 | 9,967 | 9,930 | 10,035 | 10,043 | 10,065 | 10,080 | 10,023 | 9,965 | 10,084 | 10,209 | 10,292 | 10,336 | 10,469 | 10,493 | 10,619 | 10,651 | 10,742 | 10,891 | 10,793 | 10,826 | 10,850 | 10,883 | 11,061 | 11,177 | 10,929 | 10,834 | 11,182 | 11,193 | 11,358 | 11,292 | 11,302 | 11,259 | 11,409 | 11,442 | 11,481 | 11,308 | 11,347 | 11,437 | 11,461 | 11,475 | 11,569 | 11,526 | 11,427 | 11,405 | 11,497 | 11,512 | 11,195 | 11,172 | 10,825 | 10,549 | 10,703 | 10,560 | 10,828 | 10,599 | 10,195 | 10,127 | 10,562 | 10,601 | 10,879 | 10,635 | 10,875 | 10,843 | 10,725 | 10,820 | 10,858 | 10,703 | 10,372 | 10,297 | 10,927 | 11,164 | 11,089 | 11,105 | 11,106 | 10,962 | 10,920 | 11,078 | 11,178 | 11,276 | 11,370 | 11,226 | 11,396 | 11,242 | 11,309 | 11,422 | 11,246 | 11,167 | 11,198 | 11,274 | 11,250 | 11,355 | 11,585 | 11,711 | 11,739 | 11,750 | 11,873 | 11,993 | 11,715 | 11,842 | 11,885 | 11,987 | 11,771 | 11,753 | |
| EATON VANCE Index: Bloomberg Maryland Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Maryland Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 9,959 | 9,882 | 9,578 | 9,668 | 9,728 | 9,792 | 9,804 | 9,874 | 9,998 | 9,966 | 10,032 | 10,092 | 10,031 | 10,047 | 9,982 | 10,076 | 9,966 | 9,941 | 9,967 | 9,930 | 10,035 | 10,043 | 10,065 | 10,080 | 10,023 | 9,965 | 10,084 | 10,209 | 10,292 | 10,336 | 10,469 | 10,493 | 10,619 | 10,651 | 10,742 | 10,891 | 10,793 | 10,826 | 10,850 | 10,883 | 11,061 | 11,177 | 10,929 | 10,834 | 11,182 | 11,193 | 11,358 | 11,292 | 11,302 | 11,259 | 11,409 | 11,442 | 11,481 | 11,308 | 11,347 | 11,437 | 11,461 | 11,475 | 11,569 | 11,526 | 11,427 | 11,405 | 11,497 | 11,512 | 11,195 | 11,172 | 10,825 | 10,549 | 10,703 | 10,560 | 10,828 | 10,599 | 10,195 | 10,127 | 10,562 | 10,601 | 10,879 | 10,635 | 10,875 | 10,843 | 10,725 | 10,820 | 10,858 | 10,703 | 10,372 | 10,297 | 10,927 | 11,164 | 11,089 | 11,105 | 11,106 | 10,962 | 10,920 | 11,078 | 11,178 | 11,276 | 11,370 | 11,226 | 11,396 | 11,242 | 11,309 | 11,422 | 11,246 | 11,167 | 11,198 | 11,274 | 11,250 | 11,355 | 11,585 | 11,711 | 11,739 | 11,750 | 11,873 | 11,993 | 11,715 | 11,842 | 11,885 | 11,987 | 11,771 | 11,753 | |
| EATON VANCE Index: Bloomberg Maryland Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Maryland Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 995,875 | 988,162 | 957,836 | 966,795 | 972,802 | 979,227 | 980,412 | 987,424 | 999,824 | 996,606 | 1,003,214 | 1,009,223 | 1,003,062 | 1,004,720 | 998,234 | 1,007,623 | 996,592 | 994,130 | 996,749 | 992,956 | 1,003,527 | 1,004,282 | 1,006,496 | 1,007,985 | 1,002,258 | 996,454 | 1,008,426 | 1,020,941 | 1,029,159 | 1,033,635 | 1,046,858 | 1,049,318 | 1,061,934 | 1,065,095 | 1,074,223 | 1,089,077 | 1,079,319 | 1,082,649 | 1,084,986 | 1,088,284 | 1,106,080 | 1,117,659 | 1,092,867 | 1,083,427 | 1,118,179 | 1,119,334 | 1,135,798 | 1,129,183 | 1,130,175 | 1,125,932 | 1,140,850 | 1,144,158 | 1,148,081 | 1,130,751 | 1,134,662 | 1,143,734 | 1,146,141 | 1,147,456 | 1,156,936 | 1,152,569 | 1,142,701 | 1,140,531 | 1,149,688 | 1,151,217 | 1,119,511 | 1,117,186 | 1,082,543 | 1,054,897 | 1,070,263 | 1,056,042 | 1,082,839 | 1,059,925 | 1,019,492 | 1,012,683 | 1,056,193 | 1,060,059 | 1,087,896 | 1,063,504 | 1,087,499 | 1,084,281 | 1,072,515 | 1,082,014 | 1,085,828 | 1,070,283 | 1,037,244 | 1,029,673 | 1,092,726 | 1,116,409 | 1,108,863 | 1,110,469 | 1,110,561 | 1,096,242 | 1,092,030 | 1,107,815 | 1,117,790 | 1,127,605 | 1,136,958 | 1,122,621 | 1,139,588 | 1,124,190 | 1,130,936 | 1,142,236 | 1,124,559 | 1,116,710 | 1,119,811 | 1,127,364 | 1,124,982 | 1,135,477 | 1,158,527 | 1,171,073 | 1,173,881 | 1,174,982 | 1,187,269 | 1,199,273 | 1,171,451 | 1,184,177 | 1,188,496 | 1,198,704 | 1,177,091 | 1,175,327 | |
| EATON VANCE Index: Bloomberg Missouri Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Missouri Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 9,944 | 9,836 | 9,460 | 9,593 | 9,655 | 9,729 | 9,751 | 9,822 | 9,972 | 9,955 | 10,025 | 10,089 | 10,028 | 10,069 | 10,013 | 10,107 | 9,989 | 9,966 | 10,010 | 9,977 | 10,082 | 10,092 | 10,112 | 10,137 | 10,071 | 10,006 | 10,127 | 10,253 | 10,334 | 10,382 | 10,540 | 10,581 | 10,709 | 10,755 | 10,842 | 11,027 | 10,939 | 10,951 | 10,970 | 11,007 | 11,206 | 11,357 | 10,917 | 10,762 | 11,144 | 11,245 | 11,439 | 11,393 | 11,395 | 11,360 | 11,544 | 11,637 | 11,699 | 11,509 | 11,600 | 11,709 | 11,749 | 11,797 | 11,898 | 11,842 | 11,760 | 11,709 | 11,824 | 11,842 | 11,551 | 11,513 | 11,154 | 10,819 | 10,965 | 10,790 | 11,052 | 10,830 | 10,321 | 10,202 | 10,726 | 10,756 | 11,113 | 10,835 | 11,059 | 11,056 | 10,964 | 11,079 | 11,122 | 10,966 | 10,555 | 10,429 | 11,182 | 11,472 | 11,400 | 11,403 | 11,448 | 11,305 | 11,282 | 11,481 | 11,585 | 11,674 | 11,806 | 11,615 | 11,845 | 11,630 | 11,683 | 11,813 | 11,604 | 11,497 | 11,498 | 11,545 | 11,509 | 11,619 | 11,930 | 12,093 | 12,138 | 12,130 | 12,219 | 12,405 | 12,088 | 12,276 | 12,313 | 12,444 | 12,204 | 12,154 | |
| EATON VANCE Index: Bloomberg Missouri Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Missouri Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 9,944 | 9,836 | 9,460 | 9,593 | 9,655 | 9,729 | 9,751 | 9,822 | 9,972 | 9,955 | 10,025 | 10,089 | 10,028 | 10,069 | 10,013 | 10,107 | 9,989 | 9,966 | 10,010 | 9,977 | 10,082 | 10,092 | 10,112 | 10,137 | 10,071 | 10,006 | 10,127 | 10,253 | 10,334 | 10,382 | 10,540 | 10,581 | 10,709 | 10,755 | 10,842 | 11,027 | 10,939 | 10,951 | 10,970 | 11,007 | 11,206 | 11,357 | 10,917 | 10,762 | 11,144 | 11,245 | 11,439 | 11,393 | 11,395 | 11,360 | 11,544 | 11,637 | 11,699 | 11,509 | 11,600 | 11,709 | 11,749 | 11,797 | 11,898 | 11,842 | 11,760 | 11,709 | 11,824 | 11,842 | 11,551 | 11,513 | 11,154 | 10,819 | 10,965 | 10,790 | 11,052 | 10,830 | 10,321 | 10,202 | 10,726 | 10,756 | 11,113 | 10,835 | 11,059 | 11,056 | 10,964 | 11,079 | 11,122 | 10,966 | 10,555 | 10,429 | 11,182 | 11,472 | 11,400 | 11,403 | 11,448 | 11,305 | 11,282 | 11,481 | 11,585 | 11,674 | 11,806 | 11,615 | 11,845 | 11,630 | 11,683 | 11,813 | 11,604 | 11,497 | 11,498 | 11,545 | 11,509 | 11,619 | 11,930 | 12,093 | 12,138 | 12,130 | 12,219 | 12,405 | 12,088 | 12,276 | 12,313 | 12,444 | 12,204 | 12,154 | |
| EATON VANCE Index: Bloomberg Missouri Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Missouri Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 994,447 | 983,569 | 945,987 | 959,288 | 965,465 | 972,893 | 975,105 | 982,196 | 997,228 | 995,495 | 1,002,471 | 1,008,946 | 1,002,798 | 1,006,853 | 1,001,262 | 1,010,724 | 998,931 | 996,625 | 1,001,028 | 997,708 | 1,008,177 | 1,009,222 | 1,011,214 | 1,013,695 | 1,007,056 | 1,000,594 | 1,012,726 | 1,025,280 | 1,033,430 | 1,038,180 | 1,053,967 | 1,058,131 | 1,070,893 | 1,075,535 | 1,084,182 | 1,102,666 | 1,093,897 | 1,095,130 | 1,096,963 | 1,100,743 | 1,120,615 | 1,135,676 | 1,091,666 | 1,076,179 | 1,114,398 | 1,124,465 | 1,143,900 | 1,139,319 | 1,139,457 | 1,135,957 | 1,154,376 | 1,163,734 | 1,169,851 | 1,150,855 | 1,159,984 | 1,170,873 | 1,174,925 | 1,179,659 | 1,189,751 | 1,184,180 | 1,176,019 | 1,170,928 | 1,182,429 | 1,184,152 | 1,155,102 | 1,151,344 | 1,115,447 | 1,081,927 | 1,096,509 | 1,079,011 | 1,105,202 | 1,083,047 | 1,032,073 | 1,020,204 | 1,072,592 | 1,075,562 | 1,111,302 | 1,083,474 | 1,105,927 | 1,105,607 | 1,096,398 | 1,107,921 | 1,112,184 | 1,096,617 | 1,055,466 | 1,042,942 | 1,118,153 | 1,147,160 | 1,140,048 | 1,140,313 | 1,144,805 | 1,130,456 | 1,128,205 | 1,148,092 | 1,158,509 | 1,167,442 | 1,180,585 | 1,161,452 | 1,184,548 | 1,162,967 | 1,168,340 | 1,181,348 | 1,160,416 | 1,149,734 | 1,149,769 | 1,154,549 | 1,150,881 | 1,161,915 | 1,193,048 | 1,209,291 | 1,213,775 | 1,212,968 | 1,221,938 | 1,240,453 | 1,208,778 | 1,227,554 | 1,231,281 | 1,244,364 | 1,220,386 | 1,215,364 | |
| EATON VANCE Index: Bloomberg North Carolina Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg North Carolina Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 9,954 | 9,882 | 9,575 | 9,674 | 9,734 | 9,802 | 9,820 | 9,883 | 10,006 | 9,976 | 10,042 | 10,101 | 10,031 | 10,048 | 9,985 | 10,067 | 9,982 | 9,962 | 9,979 | 9,948 | 10,043 | 10,048 | 10,072 | 10,090 | 10,033 | 9,987 | 10,092 | 10,199 | 10,282 | 10,325 | 10,445 | 10,476 | 10,592 | 10,631 | 10,720 | 10,869 | 10,774 | 10,801 | 10,828 | 10,855 | 11,031 | 11,158 | 10,826 | 10,753 | 11,113 | 11,163 | 11,322 | 11,279 | 11,296 | 11,257 | 11,389 | 11,418 | 11,473 | 11,314 | 11,377 | 11,455 | 11,473 | 11,496 | 11,591 | 11,537 | 11,452 | 11,421 | 11,511 | 11,524 | 11,221 | 11,182 | 10,800 | 10,519 | 10,656 | 10,520 | 10,794 | 10,545 | 10,121 | 10,045 | 10,509 | 10,548 | 10,850 | 10,612 | 10,857 | 10,818 | 10,704 | 10,805 | 10,843 | 10,653 | 10,329 | 10,234 | 10,890 | 11,139 | 11,064 | 11,079 | 11,091 | 10,948 | 10,902 | 11,064 | 11,177 | 11,269 | 11,377 | 11,199 | 11,385 | 11,214 | 11,289 | 11,412 | 11,221 | 11,123 | 11,146 | 11,226 | 11,218 | 11,314 | 11,551 | 11,679 | 11,720 | 11,739 | 11,837 | 11,987 | 11,711 | 11,846 | 11,889 | 11,997 | 11,770 | 11,748 | |
| EATON VANCE Index: Bloomberg North Carolina Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg North Carolina Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 9,954 | 9,882 | 9,575 | 9,674 | 9,734 | 9,802 | 9,820 | 9,883 | 10,006 | 9,976 | 10,042 | 10,101 | 10,031 | 10,048 | 9,985 | 10,067 | 9,982 | 9,962 | 9,979 | 9,948 | 10,043 | 10,048 | 10,072 | 10,090 | 10,033 | 9,987 | 10,092 | 10,199 | 10,282 | 10,325 | 10,445 | 10,476 | 10,592 | 10,631 | 10,720 | 10,869 | 10,774 | 10,801 | 10,828 | 10,855 | 11,031 | 11,158 | 10,826 | 10,753 | 11,113 | 11,163 | 11,322 | 11,279 | 11,296 | 11,257 | 11,389 | 11,418 | 11,473 | 11,314 | 11,377 | 11,455 | 11,473 | 11,496 | 11,591 | 11,537 | 11,452 | 11,421 | 11,511 | 11,524 | 11,221 | 11,182 | 10,800 | 10,519 | 10,656 | 10,520 | 10,794 | 10,545 | 10,121 | 10,045 | 10,509 | 10,548 | 10,850 | 10,612 | 10,857 | 10,818 | 10,704 | 10,805 | 10,843 | 10,653 | 10,329 | 10,234 | 10,890 | 11,139 | 11,064 | 11,079 | 11,091 | 10,948 | 10,902 | 11,064 | 11,177 | 11,269 | 11,377 | 11,199 | 11,385 | 11,214 | 11,289 | 11,412 | 11,221 | 11,123 | 11,146 | 11,226 | 11,218 | 11,314 | 11,551 | 11,679 | 11,720 | 11,739 | 11,837 | 11,987 | 11,711 | 11,846 | 11,889 | 11,997 | 11,770 | 11,748 | |
| EATON VANCE Index: Bloomberg North Carolina Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg North Carolina Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 995,374 | 988,191 | 957,544 | 967,367 | 973,396 | 980,249 | 981,985 | 988,349 | 1,000,636 | 997,596 | 1,004,165 | 1,010,095 | 1,003,146 | 1,004,849 | 998,497 | 1,006,700 | 998,190 | 996,228 | 997,884 | 994,839 | 1,004,333 | 1,004,751 | 1,007,218 | 1,008,988 | 1,003,298 | 998,653 | 1,009,173 | 1,019,918 | 1,028,245 | 1,032,503 | 1,044,517 | 1,047,629 | 1,059,240 | 1,063,093 | 1,072,023 | 1,086,884 | 1,077,382 | 1,080,117 | 1,082,759 | 1,085,501 | 1,103,092 | 1,115,776 | 1,082,550 | 1,075,315 | 1,111,297 | 1,116,276 | 1,132,186 | 1,127,934 | 1,129,627 | 1,125,661 | 1,138,852 | 1,141,762 | 1,147,282 | 1,131,375 | 1,137,728 | 1,145,518 | 1,147,320 | 1,149,562 | 1,159,083 | 1,153,727 | 1,145,221 | 1,142,105 | 1,151,080 | 1,152,378 | 1,122,144 | 1,118,222 | 1,080,029 | 1,051,886 | 1,065,600 | 1,052,004 | 1,079,415 | 1,054,498 | 1,012,146 | 1,004,535 | 1,050,947 | 1,054,802 | 1,085,037 | 1,061,234 | 1,085,690 | 1,081,827 | 1,070,357 | 1,080,549 | 1,084,282 | 1,065,316 | 1,032,896 | 1,023,371 | 1,088,982 | 1,113,942 | 1,106,449 | 1,107,899 | 1,109,131 | 1,094,788 | 1,090,187 | 1,106,383 | 1,117,722 | 1,126,876 | 1,137,663 | 1,119,909 | 1,138,549 | 1,121,404 | 1,128,878 | 1,141,235 | 1,122,057 | 1,112,279 | 1,114,637 | 1,122,607 | 1,121,846 | 1,131,395 | 1,155,093 | 1,167,880 | 1,171,978 | 1,173,887 | 1,183,678 | 1,198,717 | 1,171,057 | 1,184,635 | 1,188,928 | 1,199,696 | 1,177,005 | 1,174,810 | |
| EATON VANCE Index: Bloomberg Oregon Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Oregon Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 9,960 | 9,873 | 9,509 | 9,637 | 9,698 | 9,757 | 9,776 | 9,845 | 9,997 | 9,963 | 10,047 | 10,111 | 10,044 | 10,065 | 9,989 | 10,109 | 9,992 | 9,952 | 9,990 | 9,952 | 10,056 | 10,070 | 10,087 | 10,114 | 10,046 | 9,984 | 10,109 | 10,240 | 10,324 | 10,375 | 10,526 | 10,560 | 10,700 | 10,744 | 10,828 | 11,006 | 10,904 | 10,931 | 10,964 | 10,990 | 11,190 | 11,328 | 11,032 | 10,961 | 11,334 | 11,351 | 11,535 | 11,469 | 11,472 | 11,441 | 11,605 | 11,652 | 11,699 | 11,495 | 11,561 | 11,652 | 11,684 | 11,687 | 11,798 | 11,763 | 11,655 | 11,625 | 11,723 | 11,752 | 11,410 | 11,377 | 10,994 | 10,656 | 10,827 | 10,639 | 10,931 | 10,680 | 10,261 | 10,183 | 10,647 | 10,701 | 10,990 | 10,741 | 10,986 | 10,969 | 10,857 | 10,960 | 10,990 | 10,789 | 10,418 | 10,327 | 11,047 | 11,320 | 11,250 | 11,260 | 11,263 | 11,088 | 11,065 | 11,231 | 11,337 | 11,434 | 11,545 | 11,359 | 11,557 | 11,376 | 11,453 | 11,560 | 11,378 | 11,265 | 11,294 | 11,369 | 11,333 | 11,431 | 11,704 | 11,866 | 11,900 | 11,918 | 12,038 | 12,169 | 11,887 | 12,020 | 12,064 | 12,183 | 11,963 | 11,935 | |
| EATON VANCE Index: Bloomberg Oregon Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Oregon Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 9,960 | 9,873 | 9,509 | 9,637 | 9,698 | 9,757 | 9,776 | 9,845 | 9,997 | 9,963 | 10,047 | 10,111 | 10,044 | 10,065 | 9,989 | 10,109 | 9,992 | 9,952 | 9,990 | 9,952 | 10,056 | 10,070 | 10,087 | 10,114 | 10,046 | 9,984 | 10,109 | 10,240 | 10,324 | 10,375 | 10,526 | 10,560 | 10,700 | 10,744 | 10,828 | 11,006 | 10,904 | 10,931 | 10,964 | 10,990 | 11,190 | 11,328 | 11,032 | 10,961 | 11,334 | 11,351 | 11,535 | 11,469 | 11,472 | 11,441 | 11,605 | 11,652 | 11,699 | 11,495 | 11,561 | 11,652 | 11,684 | 11,687 | 11,798 | 11,763 | 11,655 | 11,625 | 11,723 | 11,752 | 11,410 | 11,377 | 10,994 | 10,656 | 10,827 | 10,639 | 10,931 | 10,680 | 10,261 | 10,183 | 10,647 | 10,701 | 10,990 | 10,741 | 10,986 | 10,969 | 10,857 | 10,960 | 10,990 | 10,789 | 10,418 | 10,327 | 11,047 | 11,320 | 11,250 | 11,260 | 11,263 | 11,088 | 11,065 | 11,231 | 11,337 | 11,434 | 11,545 | 11,359 | 11,557 | 11,376 | 11,453 | 11,560 | 11,378 | 11,265 | 11,294 | 11,369 | 11,333 | 11,431 | 11,704 | 11,866 | 11,900 | 11,918 | 12,038 | 12,169 | 11,887 | 12,020 | 12,064 | 12,183 | 11,963 | 11,935 | |
| EATON VANCE Index: Bloomberg Oregon Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Oregon Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 996,043 | 987,286 | 950,907 | 963,740 | 969,843 | 975,683 | 977,639 | 984,536 | 999,700 | 996,301 | 1,004,674 | 1,011,067 | 1,004,390 | 1,006,535 | 998,947 | 1,010,875 | 999,194 | 995,176 | 999,041 | 995,173 | 1,005,564 | 1,007,007 | 1,008,744 | 1,011,352 | 1,004,611 | 998,371 | 1,010,924 | 1,024,027 | 1,032,384 | 1,037,544 | 1,052,626 | 1,055,983 | 1,070,005 | 1,074,436 | 1,082,760 | 1,100,620 | 1,090,413 | 1,093,076 | 1,096,402 | 1,099,028 | 1,119,041 | 1,132,824 | 1,103,176 | 1,096,109 | 1,133,380 | 1,135,140 | 1,153,473 | 1,146,893 | 1,147,214 | 1,144,129 | 1,160,456 | 1,165,224 | 1,169,882 | 1,149,517 | 1,156,059 | 1,165,178 | 1,168,369 | 1,168,724 | 1,179,760 | 1,176,311 | 1,165,476 | 1,162,536 | 1,172,293 | 1,175,178 | 1,140,996 | 1,137,667 | 1,099,422 | 1,065,606 | 1,082,686 | 1,063,883 | 1,093,050 | 1,068,027 | 1,026,067 | 1,018,327 | 1,064,671 | 1,070,122 | 1,098,963 | 1,074,147 | 1,098,630 | 1,096,936 | 1,085,666 | 1,095,988 | 1,099,041 | 1,078,850 | 1,041,784 | 1,032,651 | 1,104,710 | 1,131,978 | 1,125,015 | 1,125,966 | 1,126,277 | 1,108,808 | 1,106,531 | 1,123,109 | 1,133,737 | 1,143,403 | 1,154,468 | 1,135,873 | 1,155,651 | 1,137,586 | 1,145,261 | 1,155,996 | 1,137,840 | 1,126,538 | 1,129,400 | 1,136,883 | 1,133,281 | 1,143,083 | 1,170,357 | 1,186,560 | 1,190,009 | 1,191,848 | 1,203,811 | 1,216,862 | 1,188,657 | 1,202,017 | 1,206,358 | 1,218,344 | 1,196,270 | 1,193,527 | |
| EATON VANCE Index: Bloomberg South Carolina Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg South Carolina Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 9,952 | 9,840 | 9,426 | 9,545 | 9,609 | 9,652 | 9,511 | 9,625 | 9,812 | 9,824 | 9,892 | 10,009 | 9,933 | 9,979 | 9,964 | 10,086 | 9,951 | 9,893 | 9,922 | 9,896 | 9,975 | 10,006 | 10,012 | 10,033 | 9,959 | 9,923 | 10,010 | 10,132 | 10,207 | 10,321 | 10,502 | 10,557 | 10,748 | 10,785 | 10,858 | 11,023 | 10,954 | 10,974 | 10,997 | 11,036 | 11,190 | 11,352 | 10,946 | 10,789 | 11,070 | 11,273 | 11,444 | 11,445 | 11,451 | 11,420 | 11,588 | 11,658 | 11,760 | 11,582 | 11,640 | 11,725 | 11,753 | 11,778 | 11,861 | 11,829 | 11,789 | 11,740 | 11,820 | 11,843 | 11,567 | 11,510 | 11,137 | 10,831 | 10,951 | 10,724 | 10,990 | 10,790 | 10,354 | 10,236 | 10,713 | 10,765 | 11,088 | 10,854 | 11,064 | 11,021 | 10,982 | 11,105 | 11,157 | 10,954 | 10,592 | 10,517 | 11,202 | 11,486 | 11,407 | 11,422 | 11,478 | 11,335 | 11,321 | 11,510 | 11,617 | 11,707 | 11,829 | 11,663 | 11,875 | 11,689 | 11,765 | 11,885 | 11,674 | 11,534 | 11,528 | 11,604 | 11,572 | 11,690 | 11,956 | 12,142 | 12,172 | 12,167 | 12,284 | 12,452 | 12,185 | 12,354 | 12,375 | 12,512 | 12,277 | 12,230 | |
| EATON VANCE Index: Bloomberg South Carolina Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg South Carolina Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 9,952 | 9,840 | 9,426 | 9,545 | 9,609 | 9,652 | 9,511 | 9,625 | 9,812 | 9,824 | 9,892 | 10,009 | 9,933 | 9,979 | 9,964 | 10,086 | 9,951 | 9,893 | 9,922 | 9,896 | 9,975 | 10,006 | 10,012 | 10,033 | 9,959 | 9,923 | 10,010 | 10,132 | 10,207 | 10,321 | 10,502 | 10,557 | 10,748 | 10,785 | 10,858 | 11,023 | 10,954 | 10,974 | 10,997 | 11,036 | 11,190 | 11,352 | 10,946 | 10,789 | 11,070 | 11,273 | 11,444 | 11,445 | 11,451 | 11,420 | 11,588 | 11,658 | 11,760 | 11,582 | 11,640 | 11,725 | 11,753 | 11,778 | 11,861 | 11,829 | 11,789 | 11,740 | 11,820 | 11,843 | 11,567 | 11,510 | 11,137 | 10,831 | 10,951 | 10,724 | 10,990 | 10,790 | 10,354 | 10,236 | 10,713 | 10,765 | 11,088 | 10,854 | 11,064 | 11,021 | 10,982 | 11,105 | 11,157 | 10,954 | 10,592 | 10,517 | 11,202 | 11,486 | 11,407 | 11,422 | 11,478 | 11,335 | 11,321 | 11,510 | 11,617 | 11,707 | 11,829 | 11,663 | 11,875 | 11,689 | 11,765 | 11,885 | 11,674 | 11,534 | 11,528 | 11,604 | 11,572 | 11,690 | 11,956 | 12,142 | 12,172 | 12,167 | 12,284 | 12,452 | 12,185 | 12,354 | 12,375 | 12,512 | 12,277 | 12,230 | |
| EATON VANCE Index: Bloomberg South Carolina Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg South Carolina Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 995,159 | 983,990 | 942,641 | 954,518 | 960,857 | 965,173 | 951,097 | 962,519 | 981,161 | 982,400 | 989,202 | 1,000,854 | 993,336 | 997,927 | 996,389 | 1,008,550 | 995,123 | 989,334 | 992,188 | 989,579 | 997,452 | 1,000,610 | 1,001,222 | 1,003,255 | 995,870 | 992,316 | 1,000,981 | 1,013,249 | 1,020,723 | 1,032,138 | 1,050,199 | 1,055,666 | 1,074,828 | 1,078,490 | 1,085,841 | 1,102,308 | 1,095,430 | 1,097,371 | 1,099,741 | 1,103,572 | 1,119,022 | 1,135,224 | 1,094,605 | 1,078,912 | 1,107,016 | 1,127,257 | 1,144,432 | 1,144,515 | 1,145,069 | 1,141,990 | 1,158,796 | 1,165,780 | 1,175,981 | 1,158,193 | 1,163,999 | 1,172,452 | 1,175,333 | 1,177,833 | 1,186,109 | 1,182,862 | 1,178,906 | 1,174,042 | 1,182,026 | 1,184,291 | 1,156,682 | 1,151,025 | 1,113,710 | 1,083,058 | 1,095,068 | 1,072,378 | 1,099,038 | 1,078,975 | 1,035,383 | 1,023,557 | 1,071,272 | 1,076,507 | 1,108,752 | 1,085,350 | 1,106,368 | 1,102,115 | 1,098,178 | 1,110,468 | 1,115,728 | 1,095,371 | 1,059,185 | 1,051,671 | 1,120,197 | 1,148,646 | 1,140,715 | 1,142,159 | 1,147,822 | 1,133,468 | 1,132,077 | 1,151,027 | 1,161,686 | 1,170,704 | 1,182,927 | 1,166,252 | 1,187,539 | 1,168,929 | 1,176,543 | 1,188,532 | 1,167,434 | 1,153,377 | 1,152,843 | 1,160,447 | 1,157,184 | 1,168,988 | 1,195,581 | 1,214,241 | 1,217,237 | 1,216,658 | 1,228,441 | 1,245,237 | 1,218,458 | 1,235,449 | 1,237,459 | 1,251,208 | 1,227,725 | 1,223,024 | |
| EATON VANCE Index: Bloomberg Virginia Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Virginia Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 9,966 | 9,871 | 9,513 | 9,631 | 9,699 | 9,761 | 9,779 | 9,856 | 9,995 | 9,964 | 10,030 | 10,097 | 10,031 | 10,039 | 9,962 | 10,083 | 9,970 | 9,937 | 9,977 | 9,936 | 10,045 | 10,054 | 10,073 | 10,096 | 10,032 | 9,981 | 10,088 | 10,205 | 10,287 | 10,340 | 10,482 | 10,507 | 10,636 | 10,675 | 10,764 | 10,901 | 10,821 | 10,846 | 10,876 | 10,901 | 11,070 | 11,179 | 10,880 | 10,813 | 11,152 | 11,199 | 11,355 | 11,320 | 11,328 | 11,287 | 11,428 | 11,467 | 11,527 | 11,367 | 11,419 | 11,496 | 11,515 | 11,544 | 11,629 | 11,586 | 11,518 | 11,494 | 11,569 | 11,586 | 11,307 | 11,272 | 10,917 | 10,614 | 10,771 | 10,592 | 10,875 | 10,629 | 10,180 | 10,113 | 10,591 | 10,615 | 10,923 | 10,654 | 10,900 | 10,870 | 10,770 | 10,884 | 10,919 | 10,743 | 10,389 | 10,293 | 11,008 | 11,274 | 11,200 | 11,217 | 11,219 | 11,077 | 11,040 | 11,219 | 11,314 | 11,393 | 11,509 | 11,336 | 11,544 | 11,366 | 11,428 | 11,547 | 11,349 | 11,243 | 11,262 | 11,322 | 11,297 | 11,387 | 11,661 | 11,795 | 11,829 | 11,836 | 11,944 | 12,101 | 11,820 | 11,979 | 12,008 | 12,129 | 11,884 | 11,850 | |
| EATON VANCE Index: Bloomberg Virginia Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Virginia Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | 10,000 | 9,966 | 9,871 | 9,513 | 9,631 | 9,699 | 9,761 | 9,779 | 9,856 | 9,995 | 9,964 | 10,030 | 10,097 | 10,031 | 10,039 | 9,962 | 10,083 | 9,970 | 9,937 | 9,977 | 9,936 | 10,045 | 10,054 | 10,073 | 10,096 | 10,032 | 9,981 | 10,088 | 10,205 | 10,287 | 10,340 | 10,482 | 10,507 | 10,636 | 10,675 | 10,764 | 10,901 | 10,821 | 10,846 | 10,876 | 10,901 | 11,070 | 11,179 | 10,880 | 10,813 | 11,152 | 11,199 | 11,355 | 11,320 | 11,328 | 11,287 | 11,428 | 11,467 | 11,527 | 11,367 | 11,419 | 11,496 | 11,515 | 11,544 | 11,629 | 11,586 | 11,518 | 11,494 | 11,569 | 11,586 | 11,307 | 11,272 | 10,917 | 10,614 | 10,771 | 10,592 | 10,875 | 10,629 | 10,180 | 10,113 | 10,591 | 10,615 | 10,923 | 10,654 | 10,900 | 10,870 | 10,770 | 10,884 | 10,919 | 10,743 | 10,389 | 10,293 | 11,008 | 11,274 | 11,200 | 11,217 | 11,219 | 11,077 | 11,040 | 11,219 | 11,314 | 11,393 | 11,509 | 11,336 | 11,544 | 11,366 | 11,428 | 11,547 | 11,349 | 11,243 | 11,262 | 11,322 | 11,297 | 11,387 | 11,661 | 11,795 | 11,829 | 11,836 | 11,944 | 12,101 | 11,820 | 11,979 | 12,008 | 12,129 | 11,884 | 11,850 | |
| EATON VANCE Index: Bloomberg Virginia Municipal Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg Virginia Municipal Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | $ 1,000,000 | $ 996,630 | $ 987,058 | $ 951,252 | $ 963,105 | $ 969,947 | $ 976,126 | $ 977,945 | $ 985,636 | $ 999,461 | $ 996,365 | $ 1,003,040 | $ 1,009,650 | $ 1,003,075 | $ 1,003,860 | $ 996,249 | $ 1,008,314 | $ 997,041 | $ 993,739 | $ 997,654 | $ 993,583 | $ 1,004,526 | $ 1,005,352 | $ 1,007,256 | $ 1,009,556 | $ 1,003,237 | $ 998,080 | $ 1,008,848 | $ 1,020,526 | $ 1,028,713 | $ 1,034,000 | $ 1,048,189 | $ 1,050,702 | $ 1,063,611 | $ 1,067,509 | $ 1,076,389 | $ 1,090,140 | $ 1,082,146 | $ 1,084,581 | $ 1,087,593 | $ 1,090,146 | $ 1,106,977 | $ 1,117,949 | $ 1,087,997 | $ 1,081,345 | $ 1,115,154 | $ 1,119,862 | $ 1,135,528 | $ 1,131,984 | $ 1,132,777 | $ 1,128,723 | $ 1,142,831 | $ 1,146,678 | $ 1,152,654 | $ 1,136,669 | $ 1,141,855 | $ 1,149,599 | $ 1,151,489 | $ 1,154,428 | $ 1,162,850 | $ 1,158,582 | $ 1,151,816 | $ 1,149,436 | $ 1,156,948 | $ 1,158,644 | $ 1,130,692 | $ 1,127,179 | $ 1,091,680 | $ 1,061,438 | $ 1,077,115 | $ 1,059,219 | $ 1,087,452 | $ 1,062,868 | $ 1,018,035 | $ 1,011,323 | $ 1,059,066 | $ 1,061,506 | $ 1,092,312 | $ 1,065,391 | $ 1,089,966 | $ 1,086,993 | $ 1,077,000 | $ 1,088,391 | $ 1,091,850 | $ 1,074,287 | $ 1,038,943 | $ 1,029,340 | $ 1,100,846 | $ 1,127,354 | $ 1,120,023 | $ 1,121,719 | $ 1,121,878 | $ 1,107,651 | $ 1,104,011 | $ 1,121,884 | $ 1,131,354 | $ 1,139,333 | $ 1,150,895 | $ 1,133,583 | $ 1,154,372 | $ 1,136,614 | $ 1,142,812 | $ 1,154,687 | $ 1,134,939 | $ 1,124,325 | $ 1,126,240 | $ 1,132,216 | $ 1,129,729 | $ 1,138,702 | $ 1,166,095 | $ 1,179,464 | $ 1,182,881 | $ 1,183,555 | $ 1,194,406 | $ 1,210,122 | $ 1,182,007 | $ 1,197,880 | $ 1,200,801 | $ 1,212,924 | $ 1,188,376 | $ 1,185,024 | |