Columbia Funds Variable Series Trust II N-CSRS 5 Sep 24 Certified semi-annual shareholder report (management investment company) Financial data

Form N-CSR Cover

Form N-CSR Cover	6 Months Ended
	Jun. 30, 2024
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

Shareholder Report

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 Series Trust II
Entity Central Index Key	0001413032
Entity Investment Company Type	N-1A
Document Period End Date	Jun. 30, 2024
Columbia Variable Portfolio – Select Small Cap Value Fund Class 3
Shareholder Report [Line Items]
Fund Name	Columbia Variable Portfolio – Select Small Cap Value Fund
Class Name	Class 3
No Trading Symbol Flag	true
Annual or Semi-Annual Statement [Text Block]	This semiannual shareholder report
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 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) Class Costs of a $ 10,000 Costs paid as a percentage of a $10,000 investment Class 3 $49 0.97%
Expenses Paid, Amount	$ 49
Expense Ratio, Percent	0.97%
Net Assets	$ 105,576,915
Holdings Count | Holding	54
Investment Company, Portfolio Turnover	12%
Additional Fund Statistics [Text Block]	Key Fund Statistics Fund net assets $105,576,915 Total number of portfolio holdings 54 Portfolio turnover for the reporting period 12%
Holdings [Text Block]	Graphical Representation of Fund 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 MACOM Technology Solutions Holdings, Inc. 3.2% Axos Financial, Inc. 3.2% Kemper Corp. 2.8% ATI, Inc. 2.7% Popular, Inc. 2.7% Portland General Electric Co. 2.6% Six Flags Entertainment Corp. 2.6% Radian Group, Inc. 2.5% Tenet Healthcare Corp. 2.5% Primoris Services Corp. 2.5% Asset Categories Equity Sector Allocation
Largest Holdings [Text Block]	Top Holdings MACOM Technology Solutions Holdings, Inc. 3.2% Axos Financial, Inc. 3.2% Kemper Corp. 2.8% ATI, Inc. 2.7% Popular, Inc. 2.7% Portland General Electric Co. 2.6% Six Flags Entertainment Corp. 2.6% Radian Group, Inc. 2.5% Tenet Healthcare Corp. 2.5% Primoris Services Corp. 2.5%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 2
Shareholder Report [Line Items]
Fund Name	Columbia Variable Portfolio – Select Small Cap Value Fund
Class Name	Class 2
No Trading Symbol Flag	true
Annual or Semi-Annual Statement [Text Block]	This semiannual shareholder report
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 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 Class Costs of a $ 10,000 Costs paid as a percentage of a $ 10,000 Class 2 $56 1.10%
Expenses Paid, Amount	$ 56
Expense Ratio, Percent	1.10%
Net Assets	$ 105,576,915
Holdings Count | Holding	54
Investment Company, Portfolio Turnover	12%
Additional Fund Statistics [Text Block]	Key Fund Statistics Fund net assets $105,576,915 Total number of portfolio holdings 54 Portfolio turnover for the reporting period 12%
Holdings [Text Block]	Graphical Representation of Fund 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 MACOM Technology Solutions Holdings, Inc. 3.2% Axos Financial, Inc. 3.2% Kemper Corp. 2.8% ATI, Inc. 2.7% Popular, Inc. 2.7% Portland General Electric Co. 2.6% Six Flags Entertainment Corp. 2.6% Radian Group, Inc. 2.5% Tenet Healthcare Corp. 2.5% Primoris Services Corp. 2.5% Asset Categories Equity Sector Allocation
Largest Holdings [Text Block]	Top Holdings MACOM Technology Solutions Holdings, Inc. 3.2% Axos Financial, Inc. 3.2% Kemper Corp. 2.8% ATI, Inc. 2.7% Popular, Inc. 2.7% Portland General Electric Co. 2.6% Six Flags Entertainment Corp. 2.6% Radian Group, Inc. 2.5% Tenet Healthcare Corp. 2.5% Primoris Services Corp. 2.5%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 1
Shareholder Report [Line Items]
Fund Name	Columbia Variable Portfolio – Select Small Cap Value Fund
Class Name	Class 1
No Trading Symbol Flag	true
Annual or Semi-Annual Statement [Text Block]	This semiannual shareholder report
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 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 Class Costs of a $ 10,000 Costs paid as a percentage of a $ 10,000 Class 1 $43 0.85%
Expenses Paid, Amount	$ 43
Expense Ratio, Percent	0.85%
Net Assets	$ 105,576,915
Holdings Count | Holding	54
Investment Company, Portfolio Turnover	12%
Additional Fund Statistics [Text Block]	Key Fund Statistics Fund net assets $105,576,915 Total number of portfolio holdings 54 Portfolio turnover for the reporting period 12%
Holdings [Text Block]	Graphical Representation of Fund The tables below show the investment makeup of the Fund represented Top Holdings MACOM Technology Solutions Holdings, Inc. 3.2% Axos Financial, Inc. 3.2% Kemper Corp. 2.8% ATI, Inc. 2.7% Popular, Inc. 2.7% Portland General Electric Co. 2.6% Six Flags Entertainment Corp. 2.6% Radian Group, Inc. 2.5% Tenet Healthcare Corp. 2.5% Primoris Services Corp. 2.5% Asset Categories Equity Sector Allocation
Largest Holdings [Text Block]	Top Holdings MACOM Technology Solutions Holdings, Inc. 3.2% Axos Financial, Inc. 3.2% Kemper Corp. 2.8% ATI, Inc. 2.7% Popular, Inc. 2.7% Portland General Electric Co. 2.6% Six Flags Entertainment Corp. 2.6% Radian Group, Inc. 2.5% Tenet Healthcare Corp. 2.5% Primoris Services Corp. 2.5%

Shareholder Report, Holdings (D

Shareholder Report, Holdings (Details)	Jun. 30, 2024
Columbia Variable Portfolio – Select Small Cap Value Fund Class 3 | MACOM Technology Solutions Holdings, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.20%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 3 | Axos Financial, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.20%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 3 | Kemper Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.80%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 3 | ATI, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.70%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 3 | Popular, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.70%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 3 | Portland General Electric Co. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 3 | Six Flags Entertainment Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 3 | Radian Group, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.50%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 3 | Tenet Healthcare Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.50%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 3 | Primoris Services Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.50%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 3 | Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	27.50%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 3 | Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	16%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 3 | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	11.50%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 3 | Energy Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.40%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 3 | Materials Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.20%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 3 | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.40%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 3 | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.30%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 3 | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.20%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 3 | Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 3 | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	1.90%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 3 | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	97.10%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 3 | Money Market Fund [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.30%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 2 | MACOM Technology Solutions Holdings, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.20%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 2 | Axos Financial, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.20%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 2 | Kemper Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.80%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 2 | ATI, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.70%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 2 | Popular, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.70%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 2 | Portland General Electric Co. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 2 | Six Flags Entertainment Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 2 | Radian Group, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.50%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 2 | Tenet Healthcare Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.50%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 2 | Primoris Services Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.50%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 2 | Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	27.50%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 2 | Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	16%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 2 | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	11.50%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 2 | Energy Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.40%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 2 | Materials Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.20%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 2 | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.40%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 2 | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.30%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 2 | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.20%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 2 | Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 2 | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	1.90%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 2 | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	97.10%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 2 | Money Market Fund [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.30%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 1 | MACOM Technology Solutions Holdings, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.20%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 1 | Axos Financial, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.20%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 1 | Kemper Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.80%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 1 | ATI, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.70%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 1 | Popular, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.70%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 1 | Portland General Electric Co. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 1 | Six Flags Entertainment Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 1 | Radian Group, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.50%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 1 | Tenet Healthcare Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.50%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 1 | Primoris Services Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.50%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 1 | Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	27.50%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 1 | Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	16%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 1 | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	11.50%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 1 | Energy Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.40%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 1 | Materials Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.20%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 1 | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.40%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 1 | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.30%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 1 | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.20%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 1 | Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 1 | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	1.90%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 1 | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	97.10%
Columbia Variable Portfolio – Select Small Cap Value Fund Class 1 | Money Market Fund [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.30%