Columbia Funds Variable Series Trust II N-CSRS5 Sep 24Certified semi-annual shareholder report (management investment company)Financial data

Company Profile

Form N-CSR Cover

Form N-CSR Cover	6 Months Ended
Form N-CSR Cover	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
Shareholder Report	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 Equity Fund Class 1
Shareholder Report [Line Items]
Fund Name	Columbia Variable Portfolio – Select Large Cap Equity 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 $ 0.67 %
Expenses Paid, Amount	$ 36
Expense Ratio, Percent	0.67%
Net Assets	$ 3,339,539,761
Holdings Count \| Holding	54
Investment Company, Portfolio Turnover	21%
Additional Fund Statistics [Text Block]	Key Fund Statistics Fund net assets $ Total number of portfolio holdings 54 Portfolio turnover for the reporting period 21%
Holdings [Text Block]	Graphical Representation of Fund Top Holdings Microsoft Corp. 8.6% NVIDIA Corp. 7.4% Apple, Inc. 6.0% Alphabet, Inc., Class C 5.9% Amazon.com, Inc. 5.3% Meta Platforms, Inc., Class A 3.5% Eli Lilly & Co. 2.8% MasterCard, Inc., Class A 2.6% Bank of America Corp. 2.5% Exxon Mobil Corp. 2.4% Asset Categories Equity Sector Allocation
Largest Holdings [Text Block]	Top Holdings Microsoft Corp. 8.6% NVIDIA Corp. 7.4% Apple, Inc. 6.0% Alphabet, Inc., Class C 5.9% Amazon.com, Inc. 5.3% Meta Platforms, Inc., Class A 3.5% Eli Lilly & Co. 2.8% MasterCard, Inc., Class A 2.6% Bank of America Corp. 2.5% Exxon Mobil Corp. 2.4%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 2
Shareholder Report [Line Items]
Fund Name	Columbia Variable Portfolio – Select Large Cap Equity 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 $ 0.92 %
Expenses Paid, Amount	$ 49
Expense Ratio, Percent	0.92%
Net Assets	$ 3,339,539,761
Holdings Count \| Holding	54
Investment Company, Portfolio Turnover	21%
Additional Fund Statistics [Text Block]	Key Fund Statistics Fund net assets $ Total number of portfolio holdings 54 Portfolio turnover for the reporting period 21%
Holdings [Text Block]	Graphical Representation of Fund Top Holdings Microsoft Corp. 8.6% NVIDIA Corp. 7.4% Apple, Inc. 6.0% Alphabet, Inc., Class C 5.9% Amazon.com, Inc. 5.3% Meta Platforms, Inc., Class A 3.5% Eli Lilly & Co. 2.8% MasterCard, Inc., Class A 2.6% Bank of America Corp. 2.5% Exxon Mobil Corp. 2.4% Asset Categories Equity Sector Allocation
Largest Holdings [Text Block]	Top Holdings Microsoft Corp. 8.6% NVIDIA Corp. 7.4% Apple, Inc. 6.0% Alphabet, Inc., Class C 5.9% Amazon.com, Inc. 5.3% Meta Platforms, Inc., Class A 3.5% Eli Lilly & Co. 2.8% MasterCard, Inc., Class A 2.6% Bank of America Corp. 2.5% Exxon Mobil Corp. 2.4%

Shareholder Report, Holdings (D

Shareholder Report, Holdings (Details)	Jun. 30, 2024
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 2 \| Microsoft Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.60%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 2 \| NVIDIA Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.40%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 2 \| Apple, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	6%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 2 \| Alphabet, Inc., Class C [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.90%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 2 \| Amazon.com, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.30%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 2 \| Meta Platforms, Inc., Class A [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.50%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 2 \| Eli Lilly & Co. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.80%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 2 \| MasterCard, Inc., Class A [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 2 \| Bank of America Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.50%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 2 \| Exxon Mobil Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.40%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 2 \| Information Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	31.20%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 2 \| Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	14.30%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 2 \| Communications Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	10.80%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 2 \| Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	10.60%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 2 \| Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	9.50%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 2 \| Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.30%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 2 \| Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.80%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 2 \| Energy Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.80%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 2 \| Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.80%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 2 \| Real Estate Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.30%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 2 \| Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	99.30%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 2 \| Other [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.80%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 1 \| Microsoft Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.60%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 1 \| NVIDIA Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	7.40%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 1 \| Apple, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	6%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 1 \| Alphabet, Inc., Class C [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.90%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 1 \| Amazon.com, Inc. [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.30%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 1 \| Meta Platforms, Inc., Class A [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.50%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 1 \| Eli Lilly & Co. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.80%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 1 \| MasterCard, Inc., Class A [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.60%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 1 \| Bank of America Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.50%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 1 \| Exxon Mobil Corp. [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.40%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 1 \| Information Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	31.20%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 1 \| Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	14.30%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 1 \| Communications Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	10.80%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 1 \| Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	10.60%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 1 \| Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	9.50%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 1 \| Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.30%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 1 \| Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.80%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 1 \| Energy Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.80%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 1 \| Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.80%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 1 \| Real Estate Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.30%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 1 \| Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	99.30%
Columbia Variable Portfolio – Select Large Cap Equity Fund Class 1 \| Other [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.80%