Average Annual Total Returns - Eaton Vance VT Floating-Rate Income Fund - Eaton Vance VT Floating-Rate Income Fund |
12 Months Ended | 60 Months Ended | 120 Months Ended | |
|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
|
| 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% | |
| Morningstar LSTA US Leveraged Loan IndexSM(reflects no deduction for fees, expenses or taxes) | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 5.90% | 6.42% | 5.82% | |
| Initial | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 3.95% | 4.64% | 4.43% | |
| ADV | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 4.34% | 4.90% | 4.69% | |
| Institutional | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 4.51% | 5.20% | 4.98% | |
| Performance Inception Date | May 01, 2016 |