Shareholder Report
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6 Months Ended |
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Jun. 30, 2025
USD ($)
Holding
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| Shareholder Report [Line Items] |
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| Document Type |
N-CSRS
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| Amendment Flag |
false
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| Registrant Name |
Columbia Funds Variable Insurance Trust
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| Entity Central Index Key |
0000815425
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| Entity Investment Company Type |
N-1A
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| Document Period End Date |
Jun. 30, 2025
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| Variable Portfolio – Managed Volatility Conservative Growth Fund - Class 1 |
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| Shareholder Report [Line Items] |
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| Fund Name |
Variable Portfolio – Managed Volatility Conservative Growth Fund
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| Class Name |
Class 1
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| No Trading Symbol Flag |
true
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| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about Variable Portfolio – Managed Volatility Conservative Growth Fund (the Fund) for the period of January 1, 2025 to June 30, 2025.
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| Shareholder Report Annual or Semi-Annual |
semi-annual shareholder report
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| Additional Information [Text Block] |
You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature . You can also request more information by contacting us at 1-800-345-6611.
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| Additional Information Phone Number |
1-800-345-6611
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| Additional Information Website |
columbiathreadneedleus.com/resources/literature
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| Expenses [Text Block] |
What were the Fund costs for the reporting period? (Based on a hypothetical $10,000 investment) | Class | Cost of a $10,000 investment | Cost paid as a percentage of a $10,000 investment | | Class 1 | $ 14 | 0.28 % (a) |
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| Expenses Paid, Amount |
$ 14
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| Expense Ratio, Percent |
0.28%
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[1] |
| Net Assets |
$ 1,125,238,324
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| Holdings Count | Holding |
84
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| Investment Company, Portfolio Turnover |
94.00%
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| Additional Fund Statistics [Text Block] |
Key Fund Statistics Fund net assets | $ 1,125,238,324 | Total number of portfolio holdings | 84 | Portfolio turnover for the reporting period | 94% |
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| Holdings [Text Block] |
Graphical Representation of Fund Holdings The tables below show the investment makeup of the Fund represented as a percentage of Fund net assets. Derivatives are excluded from the tables unless otherwise noted. The Fund's portfolio composition is subject to change. | Long | | Equity Risk | 7.0 % | | Foreign Exchange Risk | 4.8 % | | Interest Rate Risk | 6.7 % | | Short | | Equity Risk | 21.4 % | | Foreign Exchange Risk | 1.9 % | | Interest Rate Risk | 1.3 % |
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| Variable Portfolio – Managed Volatility Conservative Growth Fund - Class 2 |
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| Shareholder Report [Line Items] |
|
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| Fund Name |
Variable Portfolio – Managed Volatility Conservative Growth Fund
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| Class Name |
Class 2
|
|
| No Trading Symbol Flag |
true
|
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about Variable Portfolio – Managed Volatility Conservative Growth Fund (the Fund) for the period of January 1, 2025 to June 30, 2025.
|
|
| Shareholder Report Annual or Semi-Annual |
semi-annual shareholder report
|
|
| Additional Information [Text Block] |
You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature . You can also request more information by contacting us at 1-800-345-6611.
|
|
| Additional Information Phone Number |
1-800-345-6611
|
|
| Additional Information Website |
columbiathreadneedleus.com/resources/literature
|
|
| Expenses [Text Block] |
What were the Fund costs for the repo rti ng period? (Based on a hypothetical $10,000 investment) | Class | Cost of a $10,000 investment | Cost paid as a percentage of a $10,000 investment | | Class 2 | $ 27 | 0.53 % (a) |
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| Expenses Paid, Amount |
$ 27
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| Expense Ratio, Percent |
0.53%
|
[1] |
| Net Assets |
$ 1,125,238,324
|
|
| Holdings Count | Holding |
84
|
|
| Investment Company, Portfolio Turnover |
94.00%
|
|
| Additional Fund Statistics [Text Block] |
Key Fund Statistics Fund net assets | $ 1,125,238,324 | Total number of portfolio holdings | 84 | Portfolio turnover for the reporting period | 94% |
|
|
| Holdings [Text Block] |
Graphical Representation of Fund Holdings The tables below show the investment makeup of the Fund represented as a percentage of Fund net assets. Derivatives are excluded from the tables unless otherwise noted. The Fund's portfolio composition is subject to change. | Long | | Equity Risk | 7.0 % | | Foreign Exchange Risk | 4.8 % | | Interest Rate Risk | 6.7 % | | Short | | Equity Risk | 21.4 % | | Foreign Exchange Risk | 1.9 % | | Interest Rate Risk | 1.3 % |
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