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Shareholder Report
 6 Months Ended
Jun. 30, 2024
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSRS
Amendment Flag false
Registrant Name Columbia Funds Variable Insurance Trust
Entity Central Index Key 0000815425
Entity Investment Company Type N-1A
Document Period End Date Jun. 30, 2024
Variable Portfolio - Managed Risk Fund Class 1  
Shareholder Report [Line Items]  
Fund Name Variable Portfolio – Managed Risk Fund
Class Name Class 1
No Trading Symbol Flag true
Annual or Semi-Annual Statement [Text Block] This
semiannual shareholder report
contains important information about Variable Portfolio – Managed Risk Fund (the Fund) for the period of January 1, 2024 to June 30, 2024.
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 reporting period?
(Based on a hypothetical $10,000 investment)
ClassCosts of a $10,000 investmentCosts paid as a percentage of a $10,000 investment
Class 1 $110.22%
Expenses Paid, Amount $ 11
Expense Ratio, Percent 0.22%
Net Assets $ 244,271,666
Holdings Count | Holding 70
Investment Company, Portfolio Turnover 46.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
Fund net assets$244,271,666
Total number of portfolio holdings70
Portfolio turnover for the reporting period 46%
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.
Derivative Exposure
Long
Credit Risk2.5
%
Equity Risk5.3
%
Foreign Exchange
Risk
3.7
%
Interest Rate Risk4.4
%
Short
Equity Risk38.4
%
Foreign Exchange Risk3.0
%
Interest Rate Risk0.5
%
Asset Categories
Graphical Representation - Allocation 1 Chart
Largest Holdings [Text Block]
Asset Categories
Graphical Representation - Allocation 1 Chart
Variable Portfolio – Managed Risk Fund Class 2  
Shareholder Report [Line Items]  
Fund Name Variable Portfolio – Managed Risk Fund
Class Name Class 2
No Trading Symbol Flag true
Annual or Semi-Annual Statement [Text Block] This
semiannual shareholder report
contains important information about Variable Portfolio – Managed Risk Fund (the Fund) for the period of January 1, 2024 to June 30, 2024.
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 reporting period?
(Based on a hypothetical $10,000 investment)
ClassCosts of a $10,000 investmentCosts paid as a percentage of a $10,000 investment
Class 2
$
24		0.47
%
Expenses Paid, Amount $ 24
Expense Ratio, Percent 0.47%
Net Assets $ 244,271,666
Holdings Count | Holding 70
Investment Company, Portfolio Turnover 46.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
Fund net assets
$
244,271,666
Total number of portfolio holdings70
Portfolio turnover for the
reporting
period 		46%
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.
Derivative Exposure
Long
Credit Risk2.5
%
Equity Risk5.3
%
Foreign Exchange Risk3.7
%
Interest Rate Risk4.4
%
Short
Equity Risk38.4
%
Foreign Exchange
Risk
3.0
%
Interest Rate Risk0.5
%
Asset Categories
Graphical Representation - Allocation 1 Chart
Largest Holdings [Text Block]
Asset Categories
Graphical Representation - Allocation 1 Chart