v3.25.2
Shareholder Report
 6 Months Ended
Jun. 30, 2025
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, 2025
Variable Portfolio – Managed Volatility Conservative Fund - Class 1  
Shareholder Report [Line Items]  
Fund Name Variable Portfolio – Managed Volatility Conservative Fund
Class Name Class 1
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 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 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
$
15		 0.29
%
(a)
(a)
Annualized.
Expenses Paid, Amount $ 15
Expense Ratio, Percent 0.29% [1]
Net Assets $ 575,424,390
Holdings Count | Holding 79
Investment Company, Portfolio Turnover 90.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
Fund net assets
$
575,424,390
Total number of portfolio holdings
 79
Portfolio turnover for the reporting period
 90%
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
Equity Risk 2.8
%
Foreign Exchange Risk 3.9
%
Interest Rate Risk 7.5
%
Short
Equity Risk 12.4
%
Foreign Exchange Risk 2.1
%
Interest Rate Risk 1.9
%
Asset Categories
Graphical Representation - Allocation 1 Chart
Variable Portfolio – Managed Volatility Conservative Fund - Class 2  
Shareholder Report [Line Items]  
Fund Name Variable Portfolio – Managed Volatility Conservative Fund
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 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 reporting period?
(Based on a hypothetical $10,000 investment)
ClassCost of a $10,000 investmentCost paid as a percentage of a $10,000 investment
Class 2
$
27		0.54
%
(a)
(a)
Annualized.
Expenses Paid, Amount $ 27
Expense Ratio, Percent 0.54% [1]
Net Assets $ 575,424,390
Holdings Count | Holding 79
Investment Company, Portfolio Turnover 90.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
Fund net assets
$
575,424,390
Total number of portfolio holdings
79
Portfolio turnover for the reporting period
90%
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
Equity Risk2.8
%
Foreign Exchange Risk3.9
%
Interest Rate Risk7.5
%
Short
Equity Risk12.4
%
Foreign Exchange Risk2.1
%
Interest Rate Risk1.9
%
Asset Categories
Graphical Representation - Allocation 1 Chart
[1] Annualized.