Expense Example - Eaton Vance VT Floating-Rate Income Fund - Eaton Vance VT Floating-Rate Income Fund |
Dec. 31, 2025
USD ($)
|
|---|---|
| Initial | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | $ 121 |
| Expense Example, with Redemption, 3 Years | 378 |
| Expense Example, with Redemption, 5 Years | 654 |
| Expense Example, with Redemption, 10 Years | 1,443 |
| ADV | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 96 |
| Expense Example, with Redemption, 3 Years | 300 |
| Expense Example, with Redemption, 5 Years | 520 |
| Expense Example, with Redemption, 10 Years | 1,155 |
| Institutional | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 70 |
| Expense Example, with Redemption, 3 Years | 221 |
| Expense Example, with Redemption, 5 Years | 384 |
| Expense Example, with Redemption, 10 Years | $ 859 |