Shareholder Report, Average Annual Return (Details)
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12 Months Ended |
60 Months Ended |
120 Months Ended |
Aug. 31, 2026 |
Aug. 31, 2026 |
Aug. 31, 2026 |
| C000104752 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Class A with Maximum Sales Charge
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| Average Annual Return, Percent |
8.01%
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2.46%
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4.72%
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| C000104753 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Class C
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| Average Annual Return, Percent |
12.26%
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2.81%
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4.65%
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| C000104754 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Class I
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| C000092730 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Class A with Maximum Sales Charge
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| Average Annual Return, Percent |
14.38%
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7.45%
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10.22%
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| C000092731 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Class C
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| Average Annual Return, Percent |
18.81%
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7.79%
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10.15%
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| C000092732 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Class I
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| C000014185 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Class A with Maximum Sales Charge
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| Average Annual Return, Percent |
(10.21%)
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(5.57%)
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3.37%
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| C000014187 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Class C
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| Average Annual Return, Percent |
(6.84%)
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(5.26%)
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3.18%
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| C000014184 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Class I
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| C000014191 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Class A with Maximum Sales Charge
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| Average Annual Return, Percent |
8.49%
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2.20%
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7.78%
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| C000014193 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Class C
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| Average Annual Return, Percent |
12.55%
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2.55%
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7.55%
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| C000081646 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Class I
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| C000014194 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Class R
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| Without Sales Load [Member] | C000104752 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
14.03%
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3.58%
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5.28%
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| Without Sales Load [Member] | C000104753 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
13.26%
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2.81%
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4.65%
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| Without Sales Load [Member] | C000104754 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
14.31%
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3.83%
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5.53%
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| Without Sales Load [Member] | C000092730 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
20.71%
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8.61%
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10.82%
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| Without Sales Load [Member] | C000092731 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
19.81%
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7.79%
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10.15%
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| Without Sales Load [Member] | C000092732 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
21.00%
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8.87%
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11.09%
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| Without Sales Load [Member] | C000014185 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
(5.22%)
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(4.54%)
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3.93%
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| Without Sales Load [Member] | C000014187 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
(5.91%)
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(5.26%)
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3.18%
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| Without Sales Load [Member] | C000014184 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
(5.01%)
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(4.30%)
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4.21%
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| Without Sales Load [Member] | C000014191 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
14.46%
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3.32%
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8.37%
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| Without Sales Load [Member] | C000014193 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
13.55%
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2.55%
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7.55%
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| Without Sales Load [Member] | C000081646 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
14.66%
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3.57%
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8.64%
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| Without Sales Load [Member] | C000014194 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
14.13%
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3.06%
|
8.10%
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| EATON VANCE Index: MSCI World |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
MSCI World Index
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| Average Annual Return, Percent |
20.37%
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11.20%
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13.00%
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| EATON VANCE Index: MSCI World |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
MSCI World Index
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| Average Annual Return, Percent |
20.37%
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11.20%
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13.00%
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| EATON VANCE Index: MSCI World |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
MSCI World Index
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| Average Annual Return, Percent |
20.37%
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11.20%
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13.00%
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| EATON VANCE Index: MSCI ACWI Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
MSCI ACWI Index
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| Average Annual Return, Percent |
22.35%
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10.88%
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12.57%
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| EATON VANCE Index: MSCI ACWI Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
MSCI ACWI Index
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| Average Annual Return, Percent |
22.35%
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10.88%
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12.57%
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| EATON VANCE Index: MSCI ACWI Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
MSCI ACWI Index
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| Average Annual Return, Percent |
22.35%
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10.88%
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12.57%
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| EATON VANCE Index: MSCI China Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
MSCI China Index
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| Average Annual Return, Percent |
(6.11%)
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(2.19%)
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4.10%
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| EATON VANCE Index: MSCI China Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
MSCI China Index
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| Average Annual Return, Percent |
(6.11%)
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(2.19%)
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4.10%
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| EATON VANCE Index: MSCI China Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
MSCI China Index
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| Average Annual Return, Percent |
(6.11%)
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(2.19%)
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4.10%
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| EATON VANCE Index: MSCI World |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
MSCI World Index
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| Average Annual Return, Percent |
20.37%
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11.20%
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13.00%
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| EATON VANCE Index: MSCI World |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
MSCI World Index
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| Average Annual Return, Percent |
20.37%
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11.20%
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13.00%
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| EATON VANCE Index: MSCI World |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
MSCI World Index
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| Average Annual Return, Percent |
20.37%
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11.20%
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13.00%
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| EATON VANCE Index: MSCI World |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
MSCI World Index
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| Average Annual Return, Percent |
20.37%
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11.20%
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13.00%
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| EATON VANCE Index: MSCI ACWI Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
MSCI ACWI Index
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| Average Annual Return, Percent |
22.35%
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10.88%
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12.57%
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| EATON VANCE Index: Bloomberg U.S. Aggregate Bond Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Bloomberg U.S. Aggregate Bond Index
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| Average Annual Return, Percent |
1.89%
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(0.29%)
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1.40%
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| Eaton Vance Index: Blended Index (60% MSCI ACWI Index and 40% Bloomberg U.S. Aggregate Bond Index) |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
13.95%
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6.45%
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8.20%
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| EATON VANCE Index: MSCI ACWI Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
MSCI ACWI Index
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| Average Annual Return, Percent |
22.35%
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10.88%
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12.57%
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| EATON VANCE Index: Bloomberg U.S. Aggregate Bond Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Bloomberg U.S. Aggregate Bond Index
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| Average Annual Return, Percent |
1.89%
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(0.29%)
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1.40%
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| Eaton Vance Index: Blended Index (60% MSCI ACWI Index and 40% Bloomberg U.S. Aggregate Bond Index) |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
13.95%
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6.45%
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8.20%
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| EATON VANCE Index: MSCI ACWI Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
MSCI ACWI Index
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| Average Annual Return, Percent |
22.35%
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10.88%
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12.57%
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| EATON VANCE Index: Bloomberg U.S. Aggregate Bond Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Bloomberg U.S. Aggregate Bond Index
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| Average Annual Return, Percent |
1.89%
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(0.29%)
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1.40%
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| Eaton Vance Index: Blended Index (60% MSCI ACWI Index and 40% Bloomberg U.S. Aggregate Bond Index) |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
13.95%
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6.45%
|
8.20%
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| EATON VANCE Index: MSCI World Health Care Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
MSCI World Health Care Index
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| Average Annual Return, Percent |
19.65%
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4.54%
|
9.03%
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| EATON VANCE Index: S&P 500 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
S&P 500<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index
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| Average Annual Return, Percent |
20.38%
|
12.78%
|
15.37%
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| EATON VANCE Index: MSCI World Health Care Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
MSCI World Health Care Index
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| Average Annual Return, Percent |
19.65%
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4.54%
|
9.03%
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| EATON VANCE Index: S&P 500 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
S&P 500<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index
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| Average Annual Return, Percent |
20.38%
|
12.78%
|
15.37%
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| EATON VANCE Index: MSCI World Health Care Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
MSCI World Health Care Index
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| Average Annual Return, Percent |
19.65%
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4.54%
|
9.03%
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| EATON VANCE Index: S&P 500 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
S&P 500<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index
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| Average Annual Return, Percent |
20.38%
|
12.78%
|
15.37%
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| EATON VANCE Index: MSCI World Health Care Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
MSCI World Health Care Index
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| Average Annual Return, Percent |
19.65%
|
4.54%
|
9.03%
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| EATON VANCE Index: S&P 500 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
S&P 500<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index
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| Average Annual Return, Percent |
20.38%
|
12.78%
|
15.37%
|