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Shareholder Report
 6 Months Ended
Jun. 30, 2024
USD ($)
Holdings
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, 2024
CTIVP - Principal Blue Chip Growth Fund Class 1  
Shareholder Report [Line Items]  
Fund Name CTIVP® – Principal Blue Chip 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 CTIVP
®
– Principal Blue Chip 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
$
37		0.69
%
Expenses Paid, Amount $ 37
Expense Ratio, Percent 0.69%
Net Assets $ 2,312,272,652
Holdings Count | Holdings 36
Investment Company, Portfolio Turnover 7.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
Fund net assets
$
2,312,272,652
Total number of po
r
tfolio holdings
$
36
Portfolio turnover for the reporting period
$
7%
Holdings [Text Block]
Graphical Representation of Fund
 
Holdings
The tables below show the investment makeup of the Fund r
ep
resented 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
Microsoft Corp.12.4%
Amazon.com, Inc.8.7%
Alphabet, Inc., Class A5.6%
TransDigm Group, Inc.4.7%
Brookfield Corp.4.6%
MasterCard, Inc., Class A4.5%
Visa, Inc., Class A4.1%
Intuit, Inc.4.1%
Netflix, Inc.3.8%
Progressive Corp. (The)3.8%
Asse
t
Ca
te
gories
Graphical Representation - Allocation 1 Chart
Equity Sector Allocation
Graphical Representation - Allocation 2 Chart
Largest Holdings [Text Block]
Top Holdings
Microsoft Corp.12.4%
Amazon.com, Inc.8.7%
Alphabet, Inc., Class A5.6%
TransDigm Group, Inc.4.7%
Brookfield Corp.4.6%
MasterCard, Inc., Class A4.5%
Visa, Inc., Class A4.1%
Intuit, Inc.4.1%
Netflix, Inc.3.8%
Progressive Corp. (The)3.8%
CTIVP - Principal Blue Chip Growth Fund Class 2  
Shareholder Report [Line Items]  
Fund Name CTIVP® – Principal Blue Chip 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 CTIVP
®
– Principal Blue Chip 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 $10,0
00
investment		Costs paid as a percentage of a $10,000 investment
Class 2
$
50		0.94
%
Expenses Paid, Amount $ 50
Expense Ratio, Percent 0.94%
Net Assets $ 2,312,272,652
Holdings Count | Holdings 36
Investment Company, Portfolio Turnover 7.00%
Additional Fund Statistics [Text Block]
Key Fund Statistics
Fund net assets
$
2,312,272,652
Total number of portfolio holdings
$
36
Portfolio turnover for the reporting period
$
7%
Holdings [Text Block]
Graphical Representation of Fund
 
Holdings
The tables below show the investment makeup of the Fund represented as a percenta
ge
of Fund ne
t a
ssets. Derivatives are excluded from the tables unless otherwise noted. The Fund's portfolio composition is subject to change.
Top Holdings
Microsoft Corp.12.4%
Amazon.com, Inc.8.7%
Alphabet, Inc., Class A5.6%
TransDigm Group, Inc.4.7%
Brookfield Corp.4.6%
MasterCard, Inc., Class A4.5%
Visa, Inc., Class A4.1%
Intuit, Inc.4.1%
Netflix, Inc.3.8%
Progressive Corp. (The)3.8%
Asset Categories
Graphical Representation - Allocation 1 Chart
Equity Sector Allocation
Graphical Representation - Allocation 2 Chart
Largest Holdings [Text Block]
Top Holdings
Microsoft Corp.12.4%
Amazon.com, Inc.8.7%
Alphabet, Inc., Class A5.6%
TransDigm Group, Inc.4.7%
Brookfield Corp.4.6%
MasterCard, Inc., Class A4.5%
Visa, Inc., Class A4.1%
Intuit, Inc.4.1%
Netflix, Inc.3.8%
Progressive Corp. (The)3.8%