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 ($) 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
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 1
Shareholder Report [Line Items]
Fund Name	Columbia Variable Portfolio – Select Mid 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 investment) Class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1 $ 0.82 %
Expenses Paid, Amount	$ 42
Expense Ratio, Percent	0.82%
Net Assets	$ 249,438,164
Holdings Count | Holdings	49
Investment Company, Portfolio Turnover	2%
Additional Fund Statistics [Text Block]	Key Fund Statistics Fund net assets $ Total number of portfolio holdings 49 Portfolio turnover for the reporting period 2%
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 CACI International, Inc., Class A 3.3% AMETEK, Inc. 3.2% Trane Technologies PLC 3.2% Ingersoll Rand, Inc. 3.1% Marathon Petroleum Corp. 3.0% ITT, Inc. 3.0% Corning, Inc. 2.7% Reinsurance Group of America, Inc. 2.6% Popular, Inc. 2.4% Lamar Advertising Co., Class A 2.3% Asset Categories Equity Sector Allocation
Largest Holdings [Text Block]	Top Holdings CACI International, Inc., Class A 3.3% AMETEK, Inc. 3.2% Trane Technologies PLC 3.2% Ingersoll Rand, Inc. 3.1% Marathon Petroleum Corp. 3.0% ITT, Inc. 3.0% Corning, Inc. 2.7% Reinsurance Group of America, Inc. 2.6% Popular, Inc. 2.4% Lamar Advertising Co., Class A 2.3%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 2
Shareholder Report [Line Items]
Fund Name	Columbia Variable Portfolio – Select Mid 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 investment) Class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 2 $ 1.07 %
Expenses Paid, Amount	$ 55
Expense Ratio, Percent	1.07%
Net Assets	$ 249,438,164
Holdings Count | Holdings	49
Investment Company, Portfolio Turnover	2%
Additional Fund Statistics [Text Block]	Key Fund Statistics Fund net assets $ Total number of portfolio holdings 49 Portfolio turnover for the reporting period 2%
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 CACI International, Inc., Class A 3.3% AMETEK, Inc. 3.2% Trane Technologies PLC 3.2% Ingersoll Rand, Inc. 3.1% Marathon Petroleum Corp. 3.0% ITT, Inc. 3.0% Corning, Inc. 2.7% Reinsurance Group of America, Inc. 2.6% Popular, Inc. 2.4% Lamar Advertising Co., Class A 2.3% Asset Categories Equity Sector Allocation
Largest Holdings [Text Block]	Top Holdings CACI International, Inc., Class A 3.3% AMETEK, Inc. 3.2% Trane Technologies PLC 3.2% Ingersoll Rand, Inc. 3.1% Marathon Petroleum Corp. 3.0% ITT, Inc. 3.0% Corning, Inc. 2.7% Reinsurance Group of America, Inc. 2.6% Popular, Inc. 2.4% Lamar Advertising Co., Class A 2.3%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 3
Shareholder Report [Line Items]
Fund Name	Columbia Variable Portfolio – Select Mid 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 investment Costs paid as a percentage of a $10,000 investment Class 3 $ 0.94 %
Expenses Paid, Amount	$ 48
Expense Ratio, Percent	0.94%
Net Assets	$ 249,438,164
Holdings Count | Holdings	49
Investment Company, Portfolio Turnover	2%
Additional Fund Statistics [Text Block]	Key Fund Statistics Fund net assets $ Total number of portfolio holdings 49 Portfolio turnover for the reporting period 2%
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 CACI International, Inc., Class A 3.3% AMETEK, Inc. 3.2% Trane Technologies PLC 3.2% Ingersoll Rand, Inc. 3.1% Marathon Petroleum Corp. 3.0% ITT, Inc. 3.0% Corning, Inc. 2.7% Reinsurance Group of America, Inc. 2.6% Popular, Inc. 2.4% Lamar Advertising Co., Class A 2.3% Asset Categories Equity Sector Allocation
Largest Holdings [Text Block]	Top Holdings CACI International, Inc., Class A 3.3% AMETEK, Inc. 3.2% Trane Technologies PLC 3.2% Ingersoll Rand, Inc. 3.1% Marathon Petroleum Corp. 3.0% ITT, Inc. 3.0% Corning, Inc. 2.7% Reinsurance Group of America, Inc. 2.6% Popular, Inc. 2.4% Lamar Advertising Co., Class A 2.3%

Shareholder Report, Holdings (D

Shareholder Report, Holdings (Details)	Jun. 30, 2024
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 3 | CACI International, Inc., Class A [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.30%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 3 | AMETEK, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.20%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 3 | Trane Technologies PLC [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.20%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 3 | Ingersoll Rand, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 3 | Marathon Petroleum Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 3 | ITT, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 3 | Corning, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.70%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 3 | Reinsurance Group of America, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 3 | Popular, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.40%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 3 | Lamar Advertising Co., Class A [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.30%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 3 | Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	18.80%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 3 | Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	17.60%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 3 | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	10.20%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 3 | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	9.70%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 3 | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.40%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 3 | Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.70%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 3 | Materials Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.80%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 3 | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.30%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 3 | Energy Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.30%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 3 | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.80%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 3 | Unclassified Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 3 | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	99%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 3 | Money Market Funds [Member]
Holdings [Line Items]
Percent of Net Asset Value	1%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 2 | CACI International, Inc., Class A [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.30%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 2 | AMETEK, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.20%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 2 | Trane Technologies PLC [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.20%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 2 | Ingersoll Rand, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 2 | Marathon Petroleum Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 2 | ITT, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 2 | Corning, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.70%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 2 | Reinsurance Group of America, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 2 | Popular, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.40%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 2 | Lamar Advertising Co., Class A [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.30%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 2 | Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	18.80%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 2 | Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	17.60%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 2 | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	10.20%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 2 | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	9.70%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 2 | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.40%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 2 | Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.70%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 2 | Materials Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.80%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 2 | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.30%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 2 | Energy Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.30%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 2 | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.80%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 2 | Unclassified Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 2 | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	99%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 2 | Money Market Funds [Member]
Holdings [Line Items]
Percent of Net Asset Value	1%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 1 | CACI International, Inc., Class A [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.30%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 1 | AMETEK, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.20%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 1 | Trane Technologies PLC [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.20%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 1 | Ingersoll Rand, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 1 | Marathon Petroleum Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 1 | ITT, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 1 | Corning, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.70%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 1 | Reinsurance Group of America, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 1 | Popular, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.40%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 1 | Lamar Advertising Co., Class A [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.30%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 1 | Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	18.80%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 1 | Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	17.60%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 1 | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	10.20%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 1 | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	9.70%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 1 | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.40%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 1 | Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.70%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 1 | Materials Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.80%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 1 | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.30%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 1 | Energy Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.30%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 1 | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.80%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 1 | Unclassified Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 1 | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	99%
Columbia Variable Portfolio - Select Mid Cap Value Fund Class 1 | Money Market Funds [Member]
Holdings [Line Items]
Percent of Net Asset Value	1%