S000028688 [Member] Average Annual Total Returns |
12 Months Ended | 60 Months Ended | 120 Months Ended | 188 Months Ended |
|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
|
| Russell 1000® Growth Index (reflects no deductions for fees, expenses or taxes) | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 18.56% | 15.32% | 18.13% | |
| Russell 1000® Index (reflects no deductions for fees, expenses or taxes) | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 17.37% | 13.59% | 14.59% | |
| CTIVP - Westfield Select Large Cap Growth Fund Class 1 | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 17.27% | 2.05% | 13.31% | |
| Performance Inception Date | May 07, 2010 | |||
| CTIVP - Westfield Select Large Cap Growth Fund Class 2 | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 16.98% | 1.78% | 13.02% | |
| Performance Inception Date | May 07, 2010 |