v3.26.1
Expense Example
Jan. 31, 2026
USD ($)
Parametric International Funds Classess - A,C,I,R, & R6 | Parametric Emerging Markets Fund | Class A  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 664
Expense Example, with Redemption, 3 Years 981
Expense Example, with Redemption, 5 Years 1,320
Expense Example, with Redemption, 10 Years 2,274
Parametric International Funds Classess - A,C,I,R, & R6 | Parametric Emerging Markets Fund | Class C  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 322
Expense Example, with Redemption, 3 Years 710
Expense Example, with Redemption, 5 Years 1,224
Expense Example, with Redemption, 10 Years 2,449
Parametric International Funds Classess - A,C,I,R, & R6 | Parametric Emerging Markets Fund | Class I  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 121
Expense Example, with Redemption, 3 Years 403
Expense Example, with Redemption, 5 Years 707
Expense Example, with Redemption, 10 Years 1,569
Parametric International Funds Classess - A,C,I,R, & R6 | Parametric Emerging Markets Fund | Class R6  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 114
Expense Example, with Redemption, 3 Years 382
Expense Example, with Redemption, 5 Years 669
Expense Example, with Redemption, 10 Years 1,489
Parametric International Funds Classess - A,C,I,R, & R6 | Parametric International Equity Fund | Class A  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 600
Expense Example, with Redemption, 3 Years 776
Expense Example, with Redemption, 5 Years 968
Expense Example, with Redemption, 10 Years 1,522
Parametric International Funds Classess - A,C,I,R, & R6 | Parametric International Equity Fund | Class I  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 53
Expense Example, with Redemption, 3 Years 186
Expense Example, with Redemption, 5 Years 331
Expense Example, with Redemption, 10 Years 754
Parametric International Funds Classess - A,C,I,R, & R6 | Parametric International Equity Fund | Class R  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 104
Expense Example, with Redemption, 3 Years 344
Expense Example, with Redemption, 5 Years 603
Expense Example, with Redemption, 10 Years 1,344
Parametric International Funds Classess - A,C,I,R, & R6 | Parametric International Equity Fund | Class R6  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 50
Expense Example, with Redemption, 3 Years 177
Expense Example, with Redemption, 5 Years 315
Expense Example, with Redemption, 10 Years 717
Parametric Volatility Risk Premium - Defensive Fund | Parametric Volatility Risk Premium - Defensive Fund | Class I  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 47
Expense Example, with Redemption, 3 Years 148
Expense Example, with Redemption, 5 Years 258
Expense Example, with Redemption, 10 Years $ 579