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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
Columbia Variable Portfolio – Small Company Growth Fund Class 2  
Shareholder Report [Line Items]  
Fund Name Columbia Variable Portfolio – Small Company Growth 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 Columbia Variable Portfolio – Small Company Growth 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
$
57		1.10
%
Expenses Paid, Amount $ 57
Expense Ratio, Percent 1.10%
Net Assets $ 294,144,038
Holdings Count | Holding 96
Investment Company, Portfolio Turnover 61.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
Fund
net assets
$
294,144,038
Total number of portfolio holdings96
Portfolio turnover for the reporting period 61%
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.
Top Holdings
Natera
, Inc.		2.9%
FTAI Aviation Ltd.2.8%
XPO, Inc.2.7%
AAON, Inc.2.7%
Chemed Corp.2.5%
Bio-Techne Corp.2.4%
Onto Innovation, Inc.2.4%
Dutch Bros, Inc., Class A2.4%
Carpenter Technology Corp.2.4%
SiteOne Landscape Supply, Inc.2.3%
Asset Categories
Graphical Representation - Allocation 1 Chart
Equity Sector Allocation
Graphical Representation - Allocation 2 Chart
Largest Holdings [Text Block]
Top Holdings
Natera
, Inc.		2.9%
FTAI Aviation Ltd.2.8%
XPO, Inc.2.7%
AAON, Inc.2.7%
Chemed Corp.2.5%
Bio-Techne Corp.2.4%
Onto Innovation, Inc.2.4%
Dutch Bros, Inc., Class A2.4%
Carpenter Technology Corp.2.4%
SiteOne Landscape Supply, Inc.2.3%
Columbia Variable Portfolio – Small Company Growth Fund Class 1  
Shareholder Report [Line Items]  
Fund Name Columbia Variable Portfolio – Small Company Growth 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 Columbia Variable Portfolio – Small Company Growth 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
$
44		0.85
%
Expenses Paid, Amount $ 44
Expense Ratio, Percent 0.85%
Net Assets $ 294,144,038
Holdings Count | Holding 96
Investment Company, Portfolio Turnover 61.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
Fund net assets
$
294,144,038
Total number of
portfolio
holdings		96
Portfolio turnover for the reporting period 61%
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.
Top Holdings
Natera, Inc.2.9
%
FTAI Aviation Ltd.2.8
%
XPO, Inc.2.7
%
AAON, Inc.2.7
%
Chemed Corp.2.5
%
Bio-Techne Corp.2.4
%
Onto Innovation, Inc.2.4
%
Dutch Bros, Inc., Class A2.4
%
Carpenter Technology Corp.2.4
%
SiteOne Landscape Supply, Inc.2.3
%
Asset Categories
Graphical Representation - Allocation 1 Chart
Equity Sector Allocation
Graphical Representation - Allocation 2 Chart
Largest Holdings [Text Block]
Top Holdings
Natera, Inc.2.9
%
FTAI Aviation Ltd.2.8
%
XPO, Inc.2.7
%
AAON, Inc.2.7
%
Chemed Corp.2.5
%
Bio-Techne Corp.2.4
%
Onto Innovation, Inc.2.4
%
Dutch Bros, Inc., Class A2.4
%
Carpenter Technology Corp.2.4
%
SiteOne Landscape Supply, Inc.2.3
%