Shareholder Report, Line Graph (Details) - USD ($) |
1 Months Ended | 2 Months Ended | 3 Months Ended | 4 Months Ended | 5 Months Ended | 6 Months Ended | 7 Months Ended | 8 Months Ended | 9 Months Ended | 10 Months Ended | 11 Months Ended | 12 Months Ended | 13 Months Ended | 14 Months Ended | 15 Months Ended | 16 Months Ended | 17 Months Ended | 18 Months Ended | 19 Months Ended | 20 Months Ended | 21 Months Ended | 22 Months Ended | 23 Months Ended | 24 Months Ended | 25 Months Ended | 26 Months Ended | 27 Months Ended | 28 Months Ended | 29 Months Ended | 30 Months Ended | 31 Months Ended | 32 Months Ended | 33 Months Ended | 34 Months Ended | 35 Months Ended | 36 Months Ended | 37 Months Ended | 38 Months Ended | 39 Months Ended | 40 Months Ended | 41 Months Ended | 42 Months Ended | 43 Months Ended | 44 Months Ended | 45 Months Ended | 46 Months Ended | 47 Months Ended | 48 Months Ended | 49 Months Ended | 50 Months Ended | 51 Months Ended | 52 Months Ended | 53 Months Ended | 54 Months Ended | 55 Months Ended | 56 Months Ended | 57 Months Ended | 58 Months Ended | 59 Months Ended | 60 Months Ended | 61 Months Ended | 62 Months Ended | 63 Months Ended | 64 Months Ended | 65 Months Ended | 66 Months Ended | 67 Months Ended | 68 Months Ended | 69 Months Ended | 70 Months Ended | 71 Months Ended | 72 Months Ended | 73 Months Ended | 74 Months Ended | 75 Months Ended | 76 Months Ended | 77 Months Ended | 78 Months Ended | 79 Months Ended | 80 Months Ended | 81 Months Ended | 82 Months Ended | 83 Months Ended | 84 Months Ended | 85 Months Ended | 86 Months Ended | 87 Months Ended | 88 Months Ended | 89 Months Ended | 90 Months Ended | 91 Months Ended | 92 Months Ended | 93 Months Ended | 94 Months Ended | 95 Months Ended | 96 Months Ended | 97 Months Ended | 98 Months Ended | 99 Months Ended | 100 Months Ended | 101 Months Ended | 102 Months Ended | 103 Months Ended | 104 Months Ended | 105 Months Ended | 106 Months Ended | 107 Months Ended | 108 Months Ended | 109 Months Ended | 110 Months Ended | 111 Months Ended | 112 Months Ended | 113 Months Ended | 114 Months Ended | 115 Months Ended | 116 Months Ended | 117 Months Ended | 118 Months Ended | 119 Months Ended | 120 Months Ended | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Jun. 30, 2016 |
Jul. 31, 2016 |
Aug. 31, 2016 |
Sep. 30, 2016 |
Oct. 31, 2016 |
Nov. 30, 2016 |
Dec. 31, 2016 |
Jan. 31, 2017 |
Feb. 28, 2017 |
Mar. 31, 2017 |
Apr. 30, 2017 |
May 31, 2017 |
Jun. 30, 2026 |
Jun. 30, 2017 |
Jul. 31, 2017 |
Aug. 31, 2017 |
Sep. 30, 2017 |
Oct. 31, 2017 |
Nov. 30, 2017 |
Dec. 31, 2017 |
Jan. 31, 2018 |
Feb. 28, 2018 |
Mar. 31, 2018 |
Apr. 30, 2018 |
May 31, 2018 |
Jun. 30, 2018 |
Jul. 31, 2018 |
Aug. 31, 2018 |
Sep. 30, 2018 |
Oct. 31, 2018 |
Nov. 30, 2018 |
Dec. 31, 2018 |
Jan. 31, 2019 |
Feb. 28, 2019 |
Mar. 31, 2019 |
Apr. 30, 2019 |
May 31, 2019 |
Jun. 30, 2019 |
Jul. 31, 2019 |
Aug. 31, 2019 |
Sep. 30, 2019 |
Oct. 31, 2019 |
Nov. 30, 2019 |
Dec. 31, 2019 |
Jan. 31, 2020 |
Feb. 29, 2020 |
Mar. 31, 2020 |
Apr. 30, 2020 |
May 31, 2020 |
Jun. 30, 2020 |
Jul. 31, 2020 |
Aug. 31, 2020 |
Sep. 30, 2020 |
Oct. 31, 2020 |
Nov. 30, 2020 |
Dec. 31, 2020 |
Jan. 31, 2021 |
Feb. 28, 2021 |
Mar. 31, 2021 |
Apr. 30, 2021 |
May 31, 2021 |
Jun. 30, 2021 |
Jul. 31, 2021 |
Aug. 31, 2021 |
Sep. 30, 2021 |
Oct. 31, 2021 |
Nov. 30, 2021 |
Dec. 31, 2021 |
Jan. 31, 2022 |
Feb. 28, 2022 |
Mar. 31, 2022 |
Apr. 30, 2022 |
May 31, 2022 |
Jun. 30, 2022 |
Jul. 31, 2022 |
Aug. 31, 2022 |
Sep. 30, 2022 |
Oct. 31, 2022 |
Nov. 30, 2022 |
Dec. 31, 2022 |
Jan. 31, 2023 |
Feb. 28, 2023 |
Mar. 31, 2023 |
Apr. 30, 2023 |
May 31, 2023 |
Jun. 30, 2023 |
Jul. 31, 2023 |
Aug. 31, 2023 |
Sep. 30, 2023 |
Oct. 31, 2023 |
Nov. 30, 2023 |
Dec. 31, 2023 |
Jan. 31, 2024 |
Feb. 29, 2024 |
Mar. 31, 2024 |
Apr. 30, 2024 |
May 31, 2024 |
Jun. 30, 2024 |
Jul. 31, 2024 |
Aug. 31, 2024 |
Sep. 30, 2024 |
Oct. 31, 2024 |
Nov. 30, 2024 |
Dec. 31, 2024 |
Jan. 31, 2025 |
Feb. 28, 2025 |
Mar. 31, 2025 |
Apr. 30, 2025 |
May 31, 2025 |
Jun. 30, 2025 |
Jul. 31, 2025 |
Aug. 31, 2025 |
Sep. 30, 2025 |
Oct. 31, 2025 |
Nov. 30, 2025 |
Dec. 31, 2025 |
Jan. 31, 2026 |
Feb. 28, 2026 |
Mar. 31, 2026 |
Apr. 30, 2026 |
May 31, 2026 |
Jun. 30, 2026 |
|
| C000006391 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Class I | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | $ 1,000,000 | $ 1,043,026 | $ 1,045,202 | $ 1,054,629 | $ 1,055,838 | $ 1,011,361 | $ 1,029,653 | $ 1,081,025 | $ 1,105,359 | $ 1,130,430 | $ 1,150,586 | $ 1,170,250 | $ 1,173,445 | $ 1,230,962 | $ 1,259,966 | $ 1,250,626 | $ 1,259,721 | $ 1,256,525 | $ 1,308,603 | $ 1,400,949 | $ 1,349,145 | $ 1,336,132 | $ 1,321,867 | $ 1,255,548 | $ 1,216,007 | $ 1,253,296 | $ 1,205,496 | $ 1,206,247 | $ 1,133,422 | $ 1,159,949 | $ 1,135,914 | $ 1,222,682 | $ 1,216,539 | $ 1,216,795 | $ 1,231,384 | $ 1,183,521 | $ 1,241,878 | $ 1,222,682 | $ 1,173,283 | $ 1,185,057 | $ 1,217,563 | $ 1,212,188 | $ 1,277,951 | $ 1,222,000 | $ 1,131,637 | $ 893,909 | $ 977,442 | $ 1,012,642 | $ 1,060,450 | $ 1,114,037 | $ 1,138,729 | $ 1,111,410 | $ 1,103,792 | $ 1,236,710 | $ 1,334,960 | $ 1,336,297 | $ 1,355,551 | $ 1,359,830 | $ 1,395,397 | $ 1,449,950 | $ 1,462,252 | $ 1,414,651 | $ 1,463,054 | $ 1,424,011 | $ 1,428,824 | $ 1,355,551 | $ 1,396,480 | $ 1,394,425 | $ 1,349,520 | $ 1,342,476 | $ 1,279,373 | $ 1,279,079 | $ 1,189,855 | $ 1,205,997 | $ 1,206,291 | $ 1,101,217 | $ 1,118,241 | $ 1,237,109 | $ 1,225,566 | $ 1,297,468 | $ 1,239,817 | $ 1,265,404 | $ 1,275,120 | $ 1,246,942 | $ 1,294,229 | $ 1,369,370 | $ 1,310,423 | $ 1,274,796 | $ 1,224,595 | $ 1,306,537 | $ 1,356,093 | $ 1,311,862 | $ 1,353,693 | $ 1,380,781 | $ 1,379,409 | $ 1,407,526 | $ 1,412,669 | $ 1,430,156 | $ 1,450,729 | $ 1,510,390 | $ 1,456,900 | $ 1,432,213 | $ 1,422,859 | $ 1,445,091 | $ 1,445,450 | $ 1,463,379 | $ 1,493,141 | $ 1,544,060 | $ 1,613,625 | $ 1,644,822 | $ 1,694,665 | $ 1,750,604 | $ 1,796,861 | $ 1,793,993 | $ 1,825,184 | $ 1,962,317 | $ 2,033,702 | $ 1,878,159 | $ 2,000,264 | $ 2,034,453 | $ 1,999,512 | |
| EATON VANCE Index: MSCI Emerging Markets | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | MSCI Emerging Markets Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Value | $ 1,000,000 | $ 1,050,322 | $ 1,076,425 | $ 1,090,266 | $ 1,092,865 | $ 1,042,560 | $ 1,044,862 | $ 1,102,040 | $ 1,135,775 | $ 1,164,446 | $ 1,189,940 | $ 1,225,120 | $ 1,237,453 | $ 1,311,216 | $ 1,340,464 | $ 1,335,134 | $ 1,381,938 | $ 1,384,712 | $ 1,434,419 | $ 1,553,972 | $ 1,482,304 | $ 1,454,743 | $ 1,448,307 | $ 1,396,987 | $ 1,338,947 | $ 1,368,360 | $ 1,331,360 | $ 1,324,294 | $ 1,208,971 | $ 1,258,793 | $ 1,225,446 | $ 1,332,743 | $ 1,335,739 | $ 1,346,950 | $ 1,375,305 | $ 1,275,511 | $ 1,355,118 | $ 1,338,547 | $ 1,273,284 | $ 1,297,591 | $ 1,352,306 | $ 1,350,445 | $ 1,451,196 | $ 1,383,549 | $ 1,310,590 | $ 1,108,729 | $ 1,210,260 | $ 1,219,555 | $ 1,309,204 | $ 1,426,197 | $ 1,457,722 | $ 1,434,341 | $ 1,463,893 | $ 1,599,285 | $ 1,716,854 | $ 1,769,488 | $ 1,783,023 | $ 1,756,094 | $ 1,799,817 | $ 1,841,556 | $ 1,844,729 | $ 1,720,582 | $ 1,765,619 | $ 1,695,452 | $ 1,712,174 | $ 1,642,397 | $ 1,673,214 | $ 1,641,542 | $ 1,592,476 | $ 1,556,509 | $ 1,469,926 | $ 1,476,398 | $ 1,378,292 | $ 1,374,906 | $ 1,380,646 | $ 1,218,790 | $ 1,180,948 | $ 1,356,104 | $ 1,337,043 | $ 1,442,618 | $ 1,349,075 | $ 1,389,935 | $ 1,374,183 | $ 1,351,102 | $ 1,402,403 | $ 1,489,704 | $ 1,397,938 | $ 1,361,379 | $ 1,308,483 | $ 1,413,201 | $ 1,468,449 | $ 1,400,264 | $ 1,466,877 | $ 1,503,226 | $ 1,509,952 | $ 1,518,480 | $ 1,578,375 | $ 1,583,072 | $ 1,608,631 | $ 1,716,048 | $ 1,639,730 | $ 1,580,814 | $ 1,578,643 | $ 1,606,854 | $ 1,614,638 | $ 1,624,860 | $ 1,646,212 | $ 1,716,443 | $ 1,819,648 | $ 1,855,111 | $ 1,878,906 | $ 2,013,313 | $ 2,097,451 | $ 2,047,291 | $ 2,108,531 | $ 2,295,195 | $ 2,421,324 | $ 2,105,051 | $ 2,414,721 | $ 2,648,621 | $ 2,611,325 | |