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 Large Cap Value Fund Class 1
Shareholder Report [Line Items]
Fund Name	Columbia Variable Portfolio – Select Large 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. 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) Class Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class 1 $ 0.70 %
Expenses Paid, Amount	$ 36
Expense Ratio, Percent	0.70%
Net Assets	$ 2,073,716,829
Holdings Count | Holding	40
Investment Company, Portfolio Turnover	10%
Additional Fund Statistics [Text Block]	Key Fund Statistics Fund net assets $ Total number of portfolio holdings 40 Portfolio turnover for the reporting period 10%
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 Verizon Communications, Inc. 4.1% Bank of America Corp. 3.8% PG&E Corp. 3.7% FirstEnergy Corp. 3.6% Williams Companies, Inc. (The) 3.4% Alphabet, Inc., Class A 3.4% TechnipFMC PLC 3.3% American Tower Corp. 3.2% AES Corp. (The) 3.1% Wells Fargo & Co. 3.0% Asset Categories Equity Sector Allocation
Largest Holdings [Text Block]	Top Holdings Verizon Communications, Inc. 4.1% Bank of America Corp. 3.8% PG&E Corp. 3.7% FirstEnergy Corp. 3.6% Williams Companies, Inc. (The) 3.4% Alphabet, Inc., Class A 3.4% TechnipFMC PLC 3.3% American Tower Corp. 3.2% AES Corp. (The) 3.1% Wells Fargo & Co. 3.0%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 2
Shareholder Report [Line Items]
Fund Name	Columbia Variable Portfolio – Select Large 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 $ 0.95 %
Expenses Paid, Amount	$ 49
Expense Ratio, Percent	0.95%
Net Assets	$ 2,073,716,829
Holdings Count | Holding	40
Investment Company, Portfolio Turnover	10%
Additional Fund Statistics [Text Block]	Key Fund Statistics Fund net assets $ Total number of portfolio holdings 40 Portfolio turnover for the reporting period 10%
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 Verizon Communications, Inc. 4.1% Bank of America Corp. 3.8% PG&E Corp. 3.7% FirstEnergy Corp. 3.6% Williams Companies, Inc. (The) 3.4% Alphabet, Inc., Class A 3.4% TechnipFMC PLC 3.3% American Tower Corp. 3.2% AES Corp. (The) 3.1% Wells Fargo & Co. 3.0% Asset Categories Equity Sector Allocation
Largest Holdings [Text Block]	Top Holdings Verizon Communications, Inc. 4.1% Bank of America Corp. 3.8% PG&E Corp. 3.7% FirstEnergy Corp. 3.6% Williams Companies, Inc. (The) 3.4% Alphabet, Inc., Class A 3.4% TechnipFMC PLC 3.3% American Tower Corp. 3.2% AES Corp. (The) 3.1% Wells Fargo & Co. 3.0%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 3
Shareholder Report [Line Items]
Fund Name	Columbia Variable Portfolio – Select Large 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 $ 0.82 %
Expenses Paid, Amount	$ 43
Expense Ratio, Percent	0.82%
Net Assets	$ 2,073,716,829
Holdings Count | Holding	40
Investment Company, Portfolio Turnover	10%
Additional Fund Statistics [Text Block]	Key Fund Statistics Fund net assets $ Total number of portfolio holdings 40 Portfolio turnover for the reporting period 10%
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 Verizon Communications, Inc. 4.1% Bank of America Corp. 3.8% PG&E Corp. 3.7% FirstEnergy Corp. 3.6% Williams Companies, Inc. (The) 3.4% Alphabet, Inc., Class A 3.4% TechnipFMC PLC 3.3% American Tower Corp. 3.2% AES Corp. (The) 3.1% Wells Fargo & Co. 3.0% Asset Categories Equity Sector Allocation
Largest Holdings [Text Block]	Top Holdings Verizon Communications, Inc. 4.1% Bank of America Corp. 3.8% PG&E Corp. 3.7% FirstEnergy Corp. 3.6% Williams Companies, Inc. (The) 3.4% Alphabet, Inc., Class A 3.4% TechnipFMC PLC 3.3% American Tower Corp. 3.2% AES Corp. (The) 3.1% Wells Fargo & Co. 3.0%

Shareholder Report, Holdings (D

Shareholder Report, Holdings (Details)	Jun. 30, 2024
Columbia Variable Portfolio – Select Large Cap Value Fund Class 3 | Verizon Communications, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.10%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 3 | Bank of America Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.80%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 3 | PG&E Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.70%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 3 | FirstEnergy Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.60%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 3 | Williams Companies, Inc. (The) [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 3 | Alphabet, Inc., Class A [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 3 | TechnipFMC PLC [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.30%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 3 | American Tower Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.20%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 3 | AES Corp. (The) [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 3 | Wells Fargo & Co. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 3 | Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	19.60%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 3 | Energy Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	11.70%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 3 | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	11.40%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 3 | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	11.10%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 3 | Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	10.80%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 3 | Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	10.40%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 3 | Communications Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.40%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 3 | Materials Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	6%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 3 | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.20%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 3 | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.20%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 3 | Unclassified Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.90%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 3 | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	97.60%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 3 | Money Market Fund [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.30%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 3 | Other [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.10%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 2 | Verizon Communications, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.10%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 2 | Bank of America Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.80%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 2 | PG&E Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.70%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 2 | FirstEnergy Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.60%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 2 | Williams Companies, Inc. (The) [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 2 | Alphabet, Inc., Class A [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 2 | TechnipFMC PLC [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.30%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 2 | American Tower Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.20%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 2 | AES Corp. (The) [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 2 | Wells Fargo & Co. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 2 | Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	19.60%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 2 | Energy Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	11.70%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 2 | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	11.40%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 2 | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	11.10%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 2 | Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	10.80%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 2 | Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	10.40%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 2 | Communications Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.40%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 2 | Materials Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	6%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 2 | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.20%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 2 | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.20%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 2 | Unclassified Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.90%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 2 | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	97.60%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 2 | Money Market Fund [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.30%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 2 | Other [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.10%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 1 | Verizon Communications, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.10%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 1 | Bank of America Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.80%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 1 | PG&E Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.70%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 1 | FirstEnergy Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.60%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 1 | Williams Companies, Inc. (The) [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 1 | Alphabet, Inc., Class A [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 1 | TechnipFMC PLC [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.30%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 1 | American Tower Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.20%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 1 | AES Corp. (The) [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 1 | Wells Fargo & Co. [Member]
Holdings [Line Items]
Percent of Net Asset Value	3%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 1 | Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	19.60%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 1 | Energy Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	11.70%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 1 | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	11.40%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 1 | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	11.10%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 1 | Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	10.80%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 1 | Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	10.40%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 1 | Communications Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.40%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 1 | Materials Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	6%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 1 | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.20%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 1 | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.20%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 1 | Unclassified Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.90%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 1 | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	97.60%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 1 | Money Market Fund [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.30%
Columbia Variable Portfolio – Select Large Cap Value Fund Class 1 | Other [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.10%