v3.26.1
Average Annual Total Returns
 12 Months Ended 60 Months Ended 120 Months Ended
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Eaton Vance Tax-Managed Growth Funds | Eaton Vance Tax-Managed Growth Fund 1.1 | S&P 500 Index (reflects no deduction for fees, expenses or taxes)        
Prospectus [Line Items]        
Average Annual Return, Percent   17.88% 14.42% 14.81%
Eaton Vance Tax-Managed Growth Funds | Eaton Vance Tax-Managed Growth Fund 1.1 | Class A        
Prospectus [Line Items]        
Average Annual Return, Percent   10.53% 12.05% 13.47%
Eaton Vance Tax-Managed Growth Funds | Eaton Vance Tax-Managed Growth Fund 1.1 | Class A | After Taxes on Distributions        
Prospectus [Line Items]        
Average Annual Return, Percent   9.76% 11.70% 13.18%
Eaton Vance Tax-Managed Growth Funds | Eaton Vance Tax-Managed Growth Fund 1.1 | Class A | After Taxes on Distributions and Sales        
Prospectus [Line Items]        
Average Annual Return, Percent   6.77% 9.59% 11.28%
Eaton Vance Tax-Managed Growth Funds | Eaton Vance Tax-Managed Growth Fund 1.1 | Class C        
Prospectus [Line Items]        
Average Annual Return, Percent   14.79% 12.42% 13.23%
Eaton Vance Tax-Managed Growth Funds | Eaton Vance Tax-Managed Growth Fund 1.1 | Class I        
Prospectus [Line Items]        
Average Annual Return, Percent   16.95% 13.55% 14.36%
Eaton Vance Tax-Managed Growth Funds | Eaton Vance Tax-Managed Growth Fund 1.2 | S&P 500 Index (reflects no deduction for fees, expenses or taxes)        
Prospectus [Line Items]        
Average Annual Return, Percent   17.88% 14.42% 14.81%
Eaton Vance Tax-Managed Growth Funds | Eaton Vance Tax-Managed Growth Fund 1.2 | Class A        
Prospectus [Line Items]        
Average Annual Return, Percent   10.38% 11.89% 13.30%
Eaton Vance Tax-Managed Growth Funds | Eaton Vance Tax-Managed Growth Fund 1.2 | Class A | Return After Taxes on Distributions        
Prospectus [Line Items]        
Average Annual Return, Percent   9.83% 11.63% 13.08%
Eaton Vance Tax-Managed Growth Funds | Eaton Vance Tax-Managed Growth Fund 1.2 | Class A | Return After Taxes on Distributions and Sale of Fund Shares        
Prospectus [Line Items]        
Average Annual Return, Percent   6.53% 9.47% 11.15%
Eaton Vance Tax-Managed Growth Funds | Eaton Vance Tax-Managed Growth Fund 1.2 | Class C        
Prospectus [Line Items]        
Average Annual Return, Percent   14.62% 12.25% 13.06%
Eaton Vance Tax-Managed Growth Funds | Eaton Vance Tax-Managed Growth Fund 1.2 | Class I        
Prospectus [Line Items]        
Average Annual Return, Percent   16.77% 13.38% 14.19%
Eaton Vance Stock Fund - Clasess A, C and I | Eaton Vance Stock Fund | S&P 500 Index (reflects no deduction for fees, expenses or taxes)        
Prospectus [Line Items]        
Average Annual Return, Percent   17.88% 14.42% 14.81%
Eaton Vance Stock Fund - Clasess A, C and I | Eaton Vance Stock Fund | Class A        
Prospectus [Line Items]        
Average Annual Return, Percent   7.28% 12.15% 13.05%
Eaton Vance Stock Fund - Clasess A, C and I | Eaton Vance Stock Fund | Class A | After Taxes on Distributions        
Prospectus [Line Items]        
Average Annual Return, Percent   5.18% 9.14% 10.83%
Eaton Vance Stock Fund - Clasess A, C and I | Eaton Vance Stock Fund | Class A | After Taxes on Distributions and Sales        
Prospectus [Line Items]        
Average Annual Return, Percent   5.81% 9.20% 10.33%
Eaton Vance Stock Fund - Clasess A, C and I | Eaton Vance Stock Fund | Class C        
Prospectus [Line Items]        
Average Annual Return, Percent   11.35% 12.51% 12.81%
Eaton Vance Stock Fund - Clasess A, C and I | Eaton Vance Stock Fund | Class I        
Prospectus [Line Items]        
Average Annual Return, Percent   13.50% 13.66% 13.95%
Parametric Commodity Strategy Fund – Classes A and I | Parametric Commodity Strategy Fund | Bloomberg U.S. Universal Index (reflects no deduction for fees, expenses or taxes)        
Prospectus [Line Items]        
Average Annual Return, Percent   7.58% 0.06% 2.43%
Parametric Commodity Strategy Fund – Classes A and I | Parametric Commodity Strategy Fund | Bloomberg Commodity Index Total Return (reflects no deduction for fees, expenses or taxes)        
Prospectus [Line Items]        
Average Annual Return, Percent   15.77% 10.63% 5.72%
Parametric Commodity Strategy Fund – Classes A and I | Parametric Commodity Strategy Fund | Class A        
Prospectus [Line Items]        
Average Annual Return, Percent   18.21% 13.31% 9.20%
Parametric Commodity Strategy Fund – Classes A and I | Parametric Commodity Strategy Fund | Class A | After Taxes on Distributions        
Prospectus [Line Items]        
Average Annual Return, Percent   12.47% 9.05% 6.42%
Parametric Commodity Strategy Fund – Classes A and I | Parametric Commodity Strategy Fund | Class A | After Taxes on Distributions and Sales        
Prospectus [Line Items]        
Average Annual Return, Percent   10.71% 8.47% 5.98%
Parametric Commodity Strategy Fund – Classes A and I | Parametric Commodity Strategy Fund | Class I        
Prospectus [Line Items]        
Average Annual Return, Percent   22.29% 14.36% 9.83%
Performance Inception Date May 25, 2011