S000028688 [Member] Annual Total Returns |
12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|
| CTIVP - Westfield Select Large Cap Growth Fund | CTIVP - Westfield Select Large Cap Growth Fund Class 2 | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 16.98% | 27.15% | 30.62% | (41.21%) | (4.35%) | 75.49% | 26.85% | 2.62% | 32.23% | 3.07% |