S000028688 [Member] Expense Example - CTIVP - Westfield Select Large Cap Growth Fund |
Dec. 31, 2025
USD ($)
|
|---|---|
| CTIVP - Westfield Select Large Cap Growth Fund Class 1 | |
| 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 |
| CTIVP - Westfield Select Large Cap Growth Fund Class 2 | |
| 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 |