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
Variable Portfolio – Partners Small Cap Value Fund - Class 1  
Shareholder Report [Line Items]  
Fund Name Variable Portfolio – Partners Small Cap Value 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 – Partners Small Cap Value 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
$
39		0.81
%
(a)
(a)
Annualized.
Expenses Paid, Amount $ 39
Expense Ratio, Percent 0.81% [1]
Net Assets $ 391,440,546
Holdings Count | Holding 170
Investment Company, Portfolio Turnover 14.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
Fund net assets
$
391,440,546
Total number of portfolio holdings
170
Portfolio turnover for the reporting period
14%
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
Texas Capital Bancshares, Inc.1.7
%
Belden, Inc.1.6
%
Ameris Bancorp1.5
%
Seacoast Banking Corp. of Florida1.5
%
ICU Medical, Inc.1.4
%
REV Group, Inc.1.4
%
Mercury Systems, Inc.1.3
%
Valmont Industries, Inc.1.3
%
Hancock Whitney Corp.1.3
%
CareTrust REIT, Inc.1.2
%
Asset Categories
Graphical Representation - Allocation 1 Chart
Equity Sector Allocation
Graphical Representation - Allocation 2 Chart
Largest Holdings [Text Block]
Top Holdings
Texas Capital Bancshares, Inc.1.7
%
Belden, Inc.1.6
%
Ameris Bancorp1.5
%
Seacoast Banking Corp. of Florida1.5
%
ICU Medical, Inc.1.4
%
REV Group, Inc.1.4
%
Mercury Systems, Inc.1.3
%
Valmont Industries, Inc.1.3
%
Hancock Whitney Corp.1.3
%
CareTrust REIT, Inc.1.2
%
Variable Portfolio – Partners Small Cap Value Fund - Class 2  
Shareholder Report [Line Items]  
Fund Name Variable Portfolio – Partners Small Cap Value 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 – Partners Small Cap Value 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
$
51		1.06
%
(a)
(a)
Annualized.
Expenses Paid, Amount $ 51
Expense Ratio, Percent 1.06% [1]
Net Assets $ 391,440,546
Holdings Count | Holding 170
Investment Company, Portfolio Turnover 14.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
Fund net assets
$
391,440,546
Total number of portfolio holdings
170
Portfolio turnover for the reporting period
14%
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
Texas Capital Bancshares, Inc.1.7
%
Belden, Inc.1.6
%
Ameris Bancorp1.5
%
Seacoast Banking Corp. of Florida1.5
%
ICU Medical, Inc.1.4
%
REV Group, Inc.1.4
%
Mercury Systems, Inc.1.3
%
Valmont Industries, Inc.1.3
%
Hancock Whitney Corp.1.3
%
CareTrust REIT, Inc.1.2
%
Asset Categories
Graphical Representation - Allocation 1 Chart
Equity Sector Allocation
Graphical Representation - Allocation 2 Chart
Largest Holdings [Text Block]
Top Holdings
Texas Capital Bancshares, Inc.1.7
%
Belden, Inc.1.6
%
Ameris Bancorp1.5
%
Seacoast Banking Corp. of Florida1.5
%
ICU Medical, Inc.1.4
%
REV Group, Inc.1.4
%
Mercury Systems, Inc.1.3
%
Valmont Industries, Inc.1.3
%
Hancock Whitney Corp.1.3
%
CareTrust REIT, Inc.1.2
%
Variable Portfolio – Partners Small Cap Value Fund - Class 3  
Shareholder Report [Line Items]  
Fund Name Variable Portfolio – Partners Small Cap Value 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 Variable Portfolio – Partners Small Cap Value 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
$
45		0.93
%
(a)
(a)
Annualized.
Expenses Paid, Amount $ 45
Expense Ratio, Percent 0.93% [1]
Net Assets $ 391,440,546
Holdings Count | Holding 170
Investment Company, Portfolio Turnover 14.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
Fund net assets
$
391,440,546
Total number of portfolio holdings
170
Portfolio turnover for the reporting period
14%
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
Texas Capital Bancshares, Inc.1.7
%
Belden, Inc.1.6
%
Ameris Bancorp1.5
%
Seacoast Banking Corp. of Florida1.5
%
ICU Medical, Inc.1.4
%
REV Group, Inc.1.4
%
Mercury Systems, Inc.1.3
%
Valmont Industries, Inc.1.3
%
Hancock Whitney Corp.1.3
%
CareTrust REIT, Inc.1.2
%
Asset Categories
Graphical Representation - Allocation 1 Chart
Equity Sector Allocation
Graphical Representation - Allocation 2 Chart
Largest Holdings [Text Block]
Top Holdings
Texas Capital Bancshares, Inc.1.7
%
Belden, Inc.1.6
%
Ameris Bancorp1.5
%
Seacoast Banking Corp. of Florida1.5
%
ICU Medical, Inc.1.4
%
REV Group, Inc.1.4
%
Mercury Systems, Inc.1.3
%
Valmont Industries, Inc.1.3
%
Hancock Whitney Corp.1.3
%
CareTrust REIT, Inc.1.2
%
[1] Annualized.