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 Series Trust II
Entity Central Index Key 0001413032
Entity Investment Company Type N-1A
Document Period End Date Jun. 30, 2025
Columbia Variable Portfolio – Large Cap Index Fund - Class 1  
Shareholder Report [Line Items]  
Fund Name Columbia Variable Portfolio – Large Cap Index 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 Columbia Variable Portfolio – Large Cap Index 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 1$130.25
%
(a)
(a)
Annualized.
Expenses Paid, Amount $ 13
Expense Ratio, Percent 0.25% [1]
Net Assets $ 2,299,159,813
Holdings Count | Holding 506
Investment Company, Portfolio Turnover 1.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
Fund net assets
$
2,299,159,813
Total number of portfolio holdings
506
Portfolio turnover for the reporting period
1%
Holdings [Text Block]
Graphical Representation of Fund
 
Holdin
gs
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
NVIDIA Corp.7.3
%
Microsoft Corp.7.0
%
Apple, Inc.5.8
%
Amazon.com, Inc.3.9
%
Meta Platforms, Inc., Class A3.0
%
Broadcom, Inc.2.4
%
Alphabet, Inc., Class A1.9
%
Berkshire Hathaway, Inc., Class B1.7
%
Tesla, Inc.1.6
%
Alphabet, Inc., Class C1.6
%
Asset Categories
Graphical Representation - Allocation 1 Chart
Equity Sector Allocation
Graphical Representation - Allocation 2 Chart
Largest Holdings [Text Block]
Top Holdings
NVIDIA Corp.7.3
%
Microsoft Corp.7.0
%
Apple, Inc.5.8
%
Amazon.com, Inc.3.9
%
Meta Platforms, Inc., Class A3.0
%
Broadcom, Inc.2.4
%
Alphabet, Inc., Class A1.9
%
Berkshire Hathaway, Inc., Class B1.7
%
Tesla, Inc.1.6
%
Alphabet, Inc., Class C1.6
%
Columbia Variable Portfolio – Large Cap Index Fund - Class 2  
Shareholder Report [Line Items]  
Fund Name Columbia Variable Portfolio – Large Cap Index 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 Columbia Variable Portfolio – Large Cap Index 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
$
26		0.50
%
(a)
(a)
Annualized.
Expenses Paid, Amount $ 26
Expense Ratio, Percent 0.50% [1]
Net Assets $ 2,299,159,813
Holdings Count | Holding 506
Investment Company, Portfolio Turnover 1.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
Fund net assets
$
2,299,159,813
Total number of portfolio holdings
506
Portfolio turnover for the reporting period
1%
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. Deriv
at
ives are excluded from the tables unless otherwise noted. The Fund's portfolio composition is subject to change.
Top Holdings
NVIDIA Corp.7.3
%
Microsoft Corp.7.0
%
Apple, Inc.5.8
%
Amazon.com, Inc.3.9
%
Meta Platforms, Inc., Class A3.0
%
Broadcom, Inc.2.4
%
Alphabet, Inc., Class A1.9
%
Berkshire Hathaway, Inc., Class B1.7
%
Tesla, Inc.1.6
%
Alphabet, Inc., Class C1.6
%
Asset Categories
Graphical Representation - Allocation 1 Chart
Equity Sector Allocation
Graphical Representation - Allocation 2 Chart
Largest Holdings [Text Block]
Top Holdings
NVIDIA Corp.7.3
%
Microsoft Corp.7.0
%
Apple, Inc.5.8
%
Amazon.com, Inc.3.9
%
Meta Platforms, Inc., Class A3.0
%
Broadcom, Inc.2.4
%
Alphabet, Inc., Class A1.9
%
Berkshire Hathaway, Inc., Class B1.7
%
Tesla, Inc.1.6
%
Alphabet, Inc., Class C1.6
%
Columbia Variable Portfolio – Large Cap Index Fund - Class 3  
Shareholder Report [Line Items]  
Fund Name Columbia Variable Portfolio – Large Cap Index Fund
Class Name Class 3
No Trading Symbol Flag true
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Columbia Variable Portfolio – Large Cap Index 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 3
$
19		0.38
%
(a)
(a)
Annualized.
Expenses Paid, Amount $ 19
Expense Ratio, Percent 0.38% [1]
Net Assets $ 2,299,159,813
Holdings Count | Holding 506
Investment Company, Portfolio Turnover 1.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
Fund net assets
$
2,299,159,813
Total number of portfolio holdings
506
Portfolio turnover for the reporting period
1%
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
asse
ts. Derivatives are excluded from the tables unless otherwise noted. The Fund's portfolio composition is subject to change.
Top Holdings
NVIDIA Corp.7.3
%
Microsoft Corp.7.0
%
Apple, Inc.5.8
%
Amazon.com, Inc.3.9
%
Meta Platforms, Inc., Class A3.0
%
Broadcom, Inc.2.4
%
Alphabet, Inc., Class A1.9
%
Berkshire Hathaway, Inc., Class B1.7
%
Tesla, Inc.1.6
%
Alphabet, Inc., Class C1.6
%
Asset Categories
Graphical Representation - Allocation 1 Chart
Equity Sector Allocation
Graphical Representation - Allocation 2 Chart
Largest Holdings [Text Block]
Top Holdings
NVIDIA Corp.7.3
%
Microsoft Corp.7.0
%
Apple, Inc.5.8
%
Amazon.com, Inc.3.9
%
Meta Platforms, Inc., Class A3.0
%
Broadcom, Inc.2.4
%
Alphabet, Inc., Class A1.9
%
Berkshire Hathaway, Inc., Class B1.7
%
Tesla, Inc.1.6
%
Alphabet, Inc., Class C1.6
%
[1] Annualized.