v3.26.1
Performance Management
Dec. 31, 2025
Eaton Vance Tax-Managed Growth Funds | Eaton Vance Tax-Managed Growth Fund 1.1  
Prospectus [Line Items]  
Bar Chart and Performance Table [Heading] Performance
Performance Narrative [Text Block]
The following bar chart and table provide some indication of the risks of investing in the Fund by showing changes in the Fund’s performance from year to year and how the Fund’s average annual returns over time compare with those of a broad-based securities market index. The returns in the bar chart are for Class A shares and do not reflect a sales charge. If the sales charge was reflected, the returns would be lower. Past performance (both before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Updated Fund performance information can be obtained by visiting www.eatonvance.com.
Performance Past Does Not Indicate Future [Text] Past performance (both before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Performance Information Illustrates Variability of Returns [Text] The following bar chart and table provide some indication of the risks of investing in the Fund by showing changes in the Fund’s performance from year to year and how the Fund’s average annual returns over time compare with those of a broad-based securities market index.
Bar Chart Does Not Reflect Sales Loads [Text] The returns in the bar chart are for Class A shares and do not reflect a sales charge. If the sales charge was reflected, the returns would be lower.
Bar Chart [Table]


image
Bar Chart Closing [Text Block]
High Quarter
June 30, 2020
22.22%
Low Quarter
March 31, 2020
-19.69%
Performance Table Heading Average Annual Total Return (for the calendar periods ended December 31, 2025)
Performance Table Does Reflect Sales Loads These returns reflect the maximum current sales charge for Class A (5.25%) and any applicable contingent deferred sales charge (“CDSC”) for Class C.
Performance Table Uses Highest Federal Rate After-tax returns are calculated using the highest historical individual U.S. federal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on a shareholder’s tax situation and the actual characterization of distributions, and may differ from those shown.
Performance Table Not Relevant to Tax Deferred After-tax returns are not relevant to shareholders who hold shares in tax-deferred accounts or to shares held by non-taxable entities.
Performance Table Explanation after Tax Higher Return After Taxes on Distributions for a period may be the same as Return Before Taxes for that period because no taxable distributions were made during that period. Also, Return After Taxes on Distributions and Sale of Fund Shares for a period may be greater than or equal to Return Before Taxes and/or Return After Taxes on Distributions for the same period because of losses realized on the sale of Fund shares.
Performance [Table]
 
One Year
Five Years
Ten Years
Class A Return Before Taxes
10.53%
12.05%
13.47%
Class A Return After Taxes on Distributions
9.76%
11.70%
13.18%
Class A Return After Taxes on Distributions and Sale of Class A Shares
6.77%
9.59%
11.28%
Class C Return Before Taxes
14.79%
12.42%
13.23%
Class I Return Before Taxes
16.95%
13.55%
14.36%
S&P 500® Index (reflects no deduction for fees, expenses or taxes)
17.88%
14.42%
14.81%
Performance Table One Class of after Tax Shown [Text] After-tax returns for other Classes of shares will vary from the after-tax returns presented for Class A shares.
Index No Deduction for Fees, Expenses, or Taxes [Text] (reflects no deduction for fees, expenses or taxes)
Performance Table Closing [Text Block]
These returns reflect the maximum current sales charge for Class A (5.25%) and any applicable contingent deferred sales charge (“CDSC”) for Class C. Effective November 5, 2020, Class C shares automatically convert to Class A shares eight years after purchase. The average annual total returns listed for Class C reflect conversion to Class A shares after eight years. Prior to November 5, 2020, Class C shares automatically converted to Class A shares ten years after purchase. Investors cannot invest directly in an Index.
The S&P 500® Index is a product  of S&P Dow Jones Indices LLC or its affiliates (“SPDJI”) and any Third Party Licensor, and has been licensed for use by  Eaton Vance. S&P®, S&P 500®, US 500, The 500, iBoxx®, iTraxx® and CDX® are trademarks of S&P Global, Inc. or its affiliates (“S&P”); Dow Jones® is a registered trademark of Dow Jones Trademark Holdings LLC (“Dow Jones”); any Third Party Licensor Trademarks are trademarks of the Third Party Licensor and these trademarks have been licensed for use by SPDJI and sublicensed for certain purposes by Eaton Vance. The Fund is not sponsored, endorsed, sold or promoted by  SPDJI, Dow Jones, S&P, their respective affiliates, or any Third Party Licensor and none of such parties make any representation regarding the advisability of investing in such product(s) nor do they have any liability for any errors, omissions, or interruptions of the S&P 500® Index.
After-tax returns are calculated using the highest historical individual U.S. federal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on a shareholder’s tax situation and the actual characterization of distributions, and may differ from those shown. After-tax returns are not relevant to shareholders who hold shares in tax-deferred accounts or to shares held by non-taxable entities. After-tax returns for other Classes of shares will vary from the after-tax returns presented for Class A shares.  Return After Taxes on Distributions for a period may be the same as Return Before Taxes for that period because no taxable distributions were made during that period. Also, Return After Taxes on Distributions and Sale of Fund Shares for a period may be greater than or equal to Return Before Taxes and/or Return After Taxes on Distributions for the same period because of losses realized on the sale of Fund shares.
Performance Availability Website Address [Text] www.eatonvance.com
Eaton Vance Tax-Managed Growth Funds | Eaton Vance Tax-Managed Growth Fund 1.1 | Class A  
Prospectus [Line Items]  
Highest Quarterly Return, Label [Optional Text] High Quarter
Highest Quarterly Return 22.22%
Highest Quarterly Return, Date Jun. 30, 2020
Lowest Quarterly Return, Label [Optional Text] Low Quarter
Lowest Quarterly Return (19.69%)
Lowest Quarterly Return, Date Mar. 31, 2020
Eaton Vance Tax-Managed Growth Funds | Eaton Vance Tax-Managed Growth Fund 1.2  
Prospectus [Line Items]  
Bar Chart and Performance Table [Heading] Performance
Performance Narrative [Text Block]
The following bar chart and table provide some indication of the risks of investing in the Fund by showing changes in the Fund’s performance from year to year and how the Fund’s average annual returns over time compare with those of a broad-based securities market index. The returns in the bar chart are for Class A shares and do not reflect a sales charge. If the sales charge was reflected, the returns would be lower. Past performance (both before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Updated Fund performance information can be obtained by visiting www.eatonvance.com.
Performance Past Does Not Indicate Future [Text] Past performance (both before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Performance Information Illustrates Variability of Returns [Text] The following bar chart and table provide some indication of the risks of investing in the Fund by showing changes in the Fund’s performance from year to year and how the Fund’s average annual returns over time compare with those of a broad-based securities market index.
Bar Chart Does Not Reflect Sales Loads [Text] The returns in the bar chart are for Class A shares and do not reflect a sales charge. If the sales charge was reflected, the returns would be lower.
Bar Chart [Table]


image
Bar Chart Closing [Text Block]
High Quarter
June 30, 2020
22.21%
Low Quarter
March 31, 2020
-19.73%
Performance Table Heading Average Annual Total Return (for the calendar periods ended December 31, 2025)
Performance Table Does Reflect Sales Loads These returns reflect the maximum current sales charge for Class A (5.25%) and any applicable contingent deferred sales charge (“CDSC”) for Class C.
Performance Table Uses Highest Federal Rate After-tax returns are calculated using the highest historical individual U.S. federal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on a shareholder’s tax situation and the actual characterization of distributions, and may differ from those shown.
Performance Table Not Relevant to Tax Deferred After-tax returns are not relevant to shareholders who hold shares in tax-deferred accounts or to shares held by non-taxable entities.
Performance Table Explanation after Tax Higher Return After Taxes on Distributions for a period may be the same as Return Before Taxes for that period because no taxable distributions were made during that period. Also, Return After Taxes on Distributions and Sale of Fund Shares for a period may be greater than or equal to Return Before Taxes and/or Return After Taxes on Distributions for the same period because of losses realized on the sale of Fund shares.
Performance [Table]
 
One Year
Five Years
Ten Years
Class A Return Before Taxes
10.38%
11.89%
13.30%
Class A Return After Taxes on Distributions
9.83%
11.63%
13.08%
Class A Return After Taxes on Distributions and Sale of Class A Shares
6.53%
9.47%
11.15%
Class C Return Before Taxes
14.62%
12.25%
13.06%
Class I Return Before Taxes
16.77%
13.38%
14.19%
S&P 500® Index (reflects no deduction for fees, expenses or taxes)
17.88%
14.42%
14.81%
Performance Table One Class of after Tax Shown [Text] After-tax returns for other Classes of shares will vary from the after-tax returns presented for Class A shares.
Index No Deduction for Fees, Expenses, or Taxes [Text] (reflects no deduction for fees, expenses or taxes)
Performance Table Closing [Text Block]
These returns reflect the maximum current sales charge for Class A (5.25%) and any applicable contingent deferred sales charge (“CDSC”) for Class C. Effective November 5, 2020, Class C shares automatically convert to Class A shares eight years after purchase. The average annual total returns listed for Class C reflect conversion to Class A shares after eight years. Prior to November 5, 2020, Class C shares automatically converted to Class A shares ten years after purchase. Investors cannot invest directly in an Index.
The S&P 500® Index is a product  of S&P Dow Jones Indices LLC or its affiliates (“SPDJI”) and any Third Party Licensor, and has been licensed for use by  Eaton Vance. S&P®, S&P 500®, US 500, The 500, iBoxx®, iTraxx® and CDX® are trademarks of S&P Global, Inc. or its affiliates (“S&P”); Dow Jones® is a registered trademark of Dow Jones Trademark Holdings LLC (“Dow Jones”); any Third Party Licensor Trademarks are trademarks of the Third Party Licensor and these trademarks have been licensed for use by SPDJI and sublicensed for certain purposes by Eaton Vance. The Fund is not sponsored, endorsed, sold or promoted by  SPDJI, Dow Jones, S&P, their respective affiliates, or any Third Party Licensor and none of such parties make any representation regarding the advisability of investing in such product(s) nor do they have any liability for any errors, omissions, or interruptions of the S&P 500® Index.
After-tax returns are calculated using the highest historical individual U.S. federal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on a shareholder’s tax situation and the actual characterization of distributions, and may differ from those shown. After-tax returns are not relevant to shareholders who hold shares in tax-deferred accounts or to shares held by non-taxable entities. After-tax returns for other Classes of shares will vary from the after-tax returns presented for Class A shares.  Return After Taxes on Distributions for a period may be the same as Return Before Taxes for that period because no taxable distributions were made during that period. Also, Return After Taxes on Distributions and Sale of Fund Shares for a period may be greater than or equal to Return Before Taxes and/or Return After Taxes on Distributions for the same period because of losses realized on the sale of Fund shares.
Performance Availability Website Address [Text] www.eatonvance.com
Eaton Vance Tax-Managed Growth Funds | Eaton Vance Tax-Managed Growth Fund 1.2 | Class A  
Prospectus [Line Items]  
Highest Quarterly Return, Label [Optional Text] High Quarter
Highest Quarterly Return 22.21%
Highest Quarterly Return, Date Jun. 30, 2020
Lowest Quarterly Return, Label [Optional Text] Low Quarter
Lowest Quarterly Return (19.73%)
Lowest Quarterly Return, Date Mar. 31, 2020
Eaton Vance Stock Fund - Clasess A, C and I | Eaton Vance Stock Fund  
Prospectus [Line Items]  
Bar Chart and Performance Table [Heading] Performance
Performance Narrative [Text Block]
The following bar chart and table provide some indication of the risks of investing in the Fund by showing changes in the Fund’s performance from year to year and how the Fund’s average annual returns over time compare with those of a broad-based securities market index. The returns in the bar chart are for Class A shares and do not reflect a sales charge. If the sales charge was reflected, the returns would be lower. Past performance (both before and after taxes) is not necessarily an indication of how the Fund will perform in the future. The Fund’s performance reflects the effects of expense reductions. Absent these reductions, performance would have been lower. Updated Fund performance information can be obtained by visiting www.eatonvance.com.
Performance Past Does Not Indicate Future [Text] Past performance (both before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Performance Information Illustrates Variability of Returns [Text] The following bar chart and table provide some indication of the risks of investing in the Fund by showing changes in the Fund’s performance from year to year and how the Fund’s average annual returns over time compare with those of a broad-based securities market index.
Bar Chart Does Not Reflect Sales Loads [Text] The returns in the bar chart are for Class A shares and do not reflect a sales charge. If the sales charge was reflected, the returns would be lower.
Bar Chart [Table]


image
Bar Chart Closing [Text Block]
High Quarter
June 30, 2020
21.77 %
Low Quarter
March 31, 2020
-19.47 %
Performance Table Heading Average Annual Total Return (for the calendar periods ended December 31, 2025)
Performance Table Does Reflect Sales Loads These returns reflect the maximum current sales charge for Class A (5.25%) and any applicable contingent deferred sales charge (“CDSC”) for Class C.
Performance Table Uses Highest Federal Rate After-tax returns are calculated using the highest historical individual U.S. federal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on a shareholder’s tax situation and the actual characterization of distributions, and may differ from those shown.
Performance Table Not Relevant to Tax Deferred After-tax returns are not relevant to shareholders who hold shares in tax-deferred accounts or to shares held by non-taxable entities.
Performance Table Explanation after Tax Higher Return After Taxes on Distributions for a period may be the same as Return Before Taxes for that period because no taxable distributions were made during that period. Also, Return After Taxes on Distributions and Sale of Fund Shares for a period may be greater than or equal to Return Before Taxes and/or Return After Taxes on Distributions for the same period because of losses realized on the sale of Fund shares.
Performance [Table]
 
One Year
Five Years
Ten Years
Class A Return Before Taxes
7.28%
12.15%
13.05%
Class A Return After Taxes on Distributions
5.18%
9.14%
10.83%
Class A Return After Taxes on Distributions and Sale of Class A Shares
5.81%
9.20%
10.33%
Class C Return Before Taxes
11.35%
12.51%
12.81%
Class I Return Before Taxes
13.50%
13.66%
13.95%
S&P 500® Index (reflects no deductions for fees, expenses or taxes)
17.88%
14.42%
14.81%
Performance Table One Class of after Tax Shown [Text] After-tax returns for other Classes of shares will vary from the after-tax returns presented for Class A shares.
Index No Deduction for Fees, Expenses, or Taxes [Text] reflects no deductions for fees, expenses or taxes
Performance Table Closing [Text Block]
These returns reflect the maximum current sales charge for Class A (5.25%) and any applicable contingent deferred sales charge (“CDSC”) for Class C. Effective November 5, 2020, Class C shares automatically convert to Class A shares eight years after purchase. The average annual total returns listed for Class C reflect conversion to Class A shares after eight years. Prior to November 5, 2020, Class C shares automatically converted to Class A shares ten years after purchase. Investors cannot invest directly in an Index.
The S&P 500® Index is a product  of S&P Dow Jones Indices LLC or its affiliates (“SPDJI”) and any Third Party Licensor, and has been licensed for use by  Eaton Vance and BMR. S&P®, S&P 500®, US 500, The 500, iBoxx®, iTraxx® and CDX® are trademarks of S&P Global, Inc. or its affiliates (“S&P”); Dow Jones® is a registered trademark of Dow Jones Trademark Holdings LLC (“Dow Jones”); any Third Party Licensor Trademarks are trademarks of the Third Party Licensor and these trademarks have been licensed for use by SPDJI and sublicensed for certain purposes by Eaton Vance and BMR. The Fund is not sponsored, endorsed, sold or promoted by  SPDJI, Dow Jones, S&P, their respective affiliates, or any Third Party Licensor and none of such parties make any representation regarding the advisability of investing in such product(s) nor do they have any liability for any errors, omissions, or interruptions of the S&P 500® Index.
After-tax returns are calculated using the highest historical individual U.S. federal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on a shareholder’s tax situation and the actual characterization of distributions, and may differ from those shown. After-tax returns are not relevant to shareholders who hold shares in tax-deferred accounts or to shares held by non-taxable entities. After-tax returns for other Classes of shares will vary from the after-tax returns presented for Class A shares.  Return After Taxes on Distributions for a period may be the same as Return Before Taxes for that period because no taxable distributions were made during that period. Also, Return After Taxes on Distributions and Sale of Fund Shares for a period may be greater than or equal to Return Before Taxes and/or Return After Taxes on Distributions for the same period because of losses realized on the sale of Fund shares.
Performance Availability Website Address [Text] www.eatonvance.com
Eaton Vance Stock Fund - Clasess A, C and I | Eaton Vance Stock Fund | Class A  
Prospectus [Line Items]  
Highest Quarterly Return, Label [Optional Text] High Quarter
Highest Quarterly Return 21.77%
Highest Quarterly Return, Date Jun. 30, 2020
Lowest Quarterly Return, Label [Optional Text] Low Quarter
Lowest Quarterly Return (19.47%)
Lowest Quarterly Return, Date Mar. 31, 2020
Parametric Commodity Strategy Fund – Classes A and I | Parametric Commodity Strategy Fund  
Prospectus [Line Items]  
Bar Chart and Performance Table [Heading] Performance
Performance Narrative [Text Block]
The following bar chart and table provide some indication of the risks of investing in the Fund by showing changes in the Fund’s performance from year to year and how the Fund’s average annual returns over time compare with those of one or more indexes intended to measure broad market performance. The Fund’s primary benchmark index was changed from the Bloomberg Commodity Index Total Return to the Bloomberg US Universal Index effective May 1, 2024 to comply with the regulation that requires the Fund’s primary benchmark to represent the overall applicable market. The additional index(es) in the table provide a means to compare the Fund’s average annual returns to a benchmark that the investment adviser believes is representative of the Fund’s investment universe. The returns in the bar chart are for Class A shares and do not reflect a sales charge. If the sales charge was reflected returns would be lower. Effective April 29, 2022, the Fund’s Investor Class shares were redesignated as Class A shares and the Fund’s Institutional Class shares were redesignated as Class I shares. Past performance (both before and after taxes) is not necessarily an indication of how the Fund will perform in the future. The Fund’s performance reflects the effects of expense reductions. Absent these reductions, performance would have been lower. Updated Fund performance information can be obtained by visiting www.eatonvance.com.
Performance Past Does Not Indicate Future [Text] If the sales charge was reflected returns would be lower. Effective April 29, 2022, the Fund’s Investor Class shares were redesignated as Class A shares and the Fund’s Institutional Class shares were redesignated as Class I shares. Past performance (both before and after taxes) is not necessarily an indication of how the Fund will perform in the future.
Performance Information Illustrates Variability of Returns [Text] The following bar chart and table provide some indication of the risks of investing in the Fund by showing changes in the Fund’s performance from year to year and how the Fund’s average annual returns over time compare with those of one or more indexes intended to measure broad market performance. The Fund’s primary benchmark index was changed from the Bloomberg Commodity Index Total Return to the Bloomberg US Universal Index effective May 1, 2024 to comply with the regulation that requires the Fund’s primary benchmark to represent the overall applicable market. The additional index(es) in the table provide a means to compare the Fund’s average annual returns to a benchmark that the investment adviser believes is representative of the Fund’s investment universe.
Bar Chart Does Not Reflect Sales Loads [Text] The returns in the bar chart are for Class A shares and do not reflect a sales charge.
Bar Chart [Table]


image
Bar Chart Closing [Text Block]
High Quarter
March 31, 2022
22.68%
Low Quarter
March 31, 2020
-21.44%
Performance Table Heading Average Annual Total Return (for the calendar periods ended December 31, 2025)
Performance Table Does Reflect Sales Loads These returns reflect the maximum current sales charge for Class A (3.25%).
Performance Table Uses Highest Federal Rate After-tax returns are calculated using the highest historical individual U.S. federal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on a shareholder’s tax situation and the actual characterization of distributions, and may differ from those shown.
Performance Table Not Relevant to Tax Deferred After-tax returns are not relevant to shareholders who hold shares in tax-deferred accounts or to shares held by non-taxable entities.
Performance Table Explanation after Tax Higher Return After Taxes on Distributions for a period may be the same as Return Before Taxes for that period because no taxable distributions were made during that period. Also, Return After Taxes on Distributions and Sale of Fund Shares for a period may be greater than or equal to Return Before Taxes and/or Return After Taxes on Distributions for the same period because of losses realized on the sale of Fund shares.
Performance [Table]
 
One Year
Five Years
Ten Years
Class A Return Before Taxes
18.21%
13.31%
9.20%
Class A Return After Taxes on Distributions
12.47%
9.05%
6.42%
Class A Return After Taxes on Distributions and Sale of Class A Shares
10.71%
8.47%
5.98%
Class I Return Before Taxes
22.29%
14.36%
9.83%
Bloomberg U.S. Universal Index (reflects no deduction for fees, expenses or taxes)
7.58%
0.06%
2.43%
Bloomberg Commodity Index Total Return (reflects no deduction for fees, expenses or taxes)
15.77%
10.63%
5.72%
Performance Table One Class of after Tax Shown [Text] After-tax returns for other Classes of shares will vary from the after-tax returns presented for Class A shares.
Index No Deduction for Fees, Expenses, or Taxes [Text] reflects no deduction for fees, expenses or taxesreflects no deduction for fees, expenses or taxes
Performance Table Closing [Text Block]
These returns reflect the maximum current sales charge for Class A (3.25%). On April 29, 2022, the Fund’s Investor Class shares were redesignated as Class A shares and the Fund’s Institutional Class shares were redesignated as Class I shares. Investor Class shares had previously been sold without a sales charge. Class I commenced operations on May 25, 2011. Investors cannot invest directly in an Index.   
BLOOMBERG® is a trademark and service mark of Bloomberg Finance L.P. and its affiliates (collectively “Bloomberg”). BARCLAYS® is a trademark and service mark of Barclays Bank Plc (collectively with its affiliates, “Barclays”), used under license. Bloomberg or Bloomberg’s licensors, including Barclays, own all proprietary rights in the Bloomberg Barclays Indices. Neither Bloomberg nor Barclays is affiliated with Eaton Vance, and neither approves, endorses, reviews or recommends the Fund. Neither Bloomberg nor Barclays guarantees the timeliness, accurateness or completeness of any data or information relating to Bloomberg US Universal Index and Bloomberg Commodity Index Total Return, and neither shall be liable in any way to Eaton Vance, investors in the Fund or other third parties in respect of the use or accuracy of Bloomberg US Universal Index and Bloomberg Commodity Index Total Return  or any data included therein.  
After-tax returns are calculated using the highest historical individual U.S. federal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on a shareholder’s tax situation and the actual characterization of distributions, and may differ from those shown. After-tax returns are not relevant to shareholders who hold shares in tax-deferred accounts or to shares held by non-taxable entities. After-tax returns for other Classes of shares will vary from the after-tax returns presented for Class A shares.  Return After Taxes on Distributions for a period may be the same as Return Before Taxes for that period because no taxable distributions were made during that period. Also, Return After Taxes on Distributions and Sale of Fund Shares for a period may be greater than or equal to Return Before Taxes and/or Return After Taxes on Distributions for the same period because of losses realized on the sale of Fund shares.
Performance Availability Website Address [Text] www.eatonvance.com
Parametric Commodity Strategy Fund – Classes A and I | Parametric Commodity Strategy Fund | Class A  
Prospectus [Line Items]  
Highest Quarterly Return, Label [Optional Text] High Quarter
Highest Quarterly Return 22.68%
Highest Quarterly Return, Date Mar. 31, 2022
Lowest Quarterly Return, Label [Optional Text] Low Quarter
Lowest Quarterly Return (21.44%)
Lowest Quarterly Return, Date Mar. 31, 2020