S000028695 [Member] Performance Management - CTIVP - CenterSquare Real Estate Fund |
Dec. 31, 2025 |
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| Prospectus [Line Items] | |
| Bar Chart and Performance Table [Heading] | Performance Information |
| Performance Narrative [Text Block] | The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class 2 share performance has varied for each full calendar year shown. The table below the bar chart compares the Fund’s returns for the periods shown with a broad measure of market performance, as well as another measure of performance for markets in which the Fund may invest. Except for differences in annual returns resulting from differences in expenses (where applicable), the share classes of the Fund would have substantially similar annual returns because all share classes of the Fund invest in the same portfolio of securities. The returns shown do not reflect any fees and expenses imposed under your Contract or Qualified Plan and would be lower if they did. The Fund’s performance prior to June 2016 reflects returns achieved by one or more different subadviser(s) that managed the Fund according to different principal investment strategies. If the Fund’s current subadviser and strategies had been in place for the prior periods, results shown may have been different. The Fund’s past performance is no guarantee of how the Fund will perform in the future. Updated performance information can be obtained by calling toll-free 800.345.6611 or visiting columbiathreadneedleus.com.
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| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is no guarantee of how the Fund will perform in the future. |
| Performance Information Illustrates Variability of Returns [Text] | The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class 2 share performance has varied for each full calendar year shown. The table below the bar chart compares the Fund’s returns for the periods shown with a broad measure of market performance, as well as another measure of performance for markets in which the Fund may invest. |
| Bar Chart Does Not Reflect Sales Loads [Text] | The returns shown do not reflect any fees and expenses imposed under your Contract or Qualified Plan and would be lower if they did. |
| Bar Chart [Heading] | Year by Year Total Return (%) as of December 31 Each Year |
| Bar Chart Closing [Text Block] | Best and Worst Quarterly Returns During the Period Shown in the Bar Chart Best 3rd Quarter 2024 17.10% Worst 1st Quarter 2020 -24.72% |
| Performance Table Heading | Average Annual Total Returns (for periods ended December 31, 2025) |
| Performance Availability Website Address [Text] | columbiathreadneedleus.com |
| Performance Availability Phone [Text] | 800.345.6611 |
| CTIVP - CenterSquare Real Estate Fund Class 2 | |
| Prospectus [Line Items] | |
| Highest Quarterly Return, Label [Optional Text] | Best |
| Highest Quarterly Return | 17.10% |
| Highest Quarterly Return, Date | Sep. 30, 2024 |
| Lowest Quarterly Return, Label [Optional Text] | Worst |
| Lowest Quarterly Return | (24.72%) |
| Lowest Quarterly Return, Date | Mar. 31, 2020 |