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 – Core Equity Fund  
Shareholder Report [Line Items]  
Fund Name Columbia Variable Portfolio – Core Equity Fund
Class Name Columbia Variable Portfolio – Core Equity Fund
No Trading Symbol Flag true
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Columbia Variable Portfolio – Core Equity 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)
FundCost of a $10,000 investmentCost paid as a percentage of a $10,000 investment
Columbia Variable Portfolio – Core Equity Fund
$
20		0.40
%
(a)
(a)
Annualized.
Expenses Paid, Amount $ 20
Expense Ratio, Percent 0.40% [1]
Net Assets $ 212,647,715
Holdings Count | Holding 83
Investment Company, Portfolio Turnover 24.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
Fund net assets
$
212,647,715
Total number of portfolio holdings
83
Portfolio turnover for the reporting period
24%
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
NVIDIA Corp.8.9
%
Microsoft Corp.6.7
%
Apple, Inc.5.3
%
Alphabet, Inc., Class A5.0
%
Meta Platforms, Inc., Class A4.8
%
Amazon.com, Inc.4.0
%
Booking Holdings, Inc.2.3
%
Citigroup, Inc.2.2
%
Salesforce, Inc.2.1
%
QUALCOMM, Inc.1.9
%
Asset Categories
Graphical Representation - Allocation 1 Chart
Equity Sector Allocation
Graphical Representation - Allocation 2 Chart
Largest Holdings [Text Block]
Top Holdings
NVIDIA Corp.8.9
%
Microsoft Corp.6.7
%
Apple, Inc.5.3
%
Alphabet, Inc., Class A5.0
%
Meta Platforms, Inc., Class A4.8
%
Amazon.com, Inc.4.0
%
Booking Holdings, Inc.2.3
%
Citigroup, Inc.2.2
%
Salesforce, Inc.2.1
%
QUALCOMM, Inc.1.9
%
[1] Annualized.