v3.26.1
Shareholder Report
 6 Months Ended
Jun. 30, 2026
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSRS
Amendment Flag false
Registrant Name Voya Variable Funds
Entity Central Index Key 0000002664
Entity Investment Company Type N-1A
Document Period End Date Jun. 30, 2026
Shareholder Report Annual or Semi-Annual Semi-Annual Shareholder Report
C000028787  
Shareholder Report [Line Items]  
Fund Name Voya Growth and Income Portfolio
Class Name Class ADV
Trading Symbol IAVGX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Voya Growth and Income Portfolio for the period of January 1, 2026 to June 30, 2026.
Additional Information Phone Number 1-800-992-0180
Expenses [Text Block]

What were the Fund’s costs for the last six months?  (based on a hypothetical $10,000 investment)

Table Summary
Class Name
Costs of $10K investment
Costs paid as % of $10K investment (Annualized)
Class ADV
$58
1.13%
Expenses Paid, Amount $ 58
Expense Ratio, Percent 1.13%
AssetsNet $ 2,770,379,970
Holdings Count | Holding 76
InvestmentCompanyPortfolioTurnover 62.00%
Additional Fund Statistics [Text Block]

Fund Statistics 

  • Total Net Assets$2,770,379,970
  • # of Portfolio Holdings76
  • Portfolio Turnover Rate62%
Holdings [Text Block]

Portfolio Composition

A graphical representation of Investments made.
Table Summary
Value
Value
Liabilities in Excess of Other Assets
(0.2)%
Short-Term Investments
1.0%
Common Stock
99.2%

Sector Allocation 

A graphical representation of Investments made.
Table Summary
Value
Value
Information Technology
34.8%
Financials
11.6%
Communication Services
9.9%
Health Care
9.8%
Consumer Discretionary
8.8%
Industrials
8.7%
Consumer Staples
4.4%
Materials
3.7%
Energy
3.2%
Utilities
2.2%
Real Estate
2.1%
Short-Term Investments
1.0%
Liabilities in Excess of Other Assets
(0.2)%
Largest Holdings [Text Block]

Top 10 Holdings 

Table Summary
Apple, Inc.
7.4%
Alphabet, Inc. - Class A
6.5%
Amazon.com, Inc.
5.1%
Micron Technology, Inc.
4.2%
NVIDIA Corp.
4.0%
Broadcom, Inc.
3.5%
JPMorgan Chase & Co.
3.2%
International Business Machines Corp.
3.1%
Cisco Systems, Inc.
3.1%
Meta Platforms, Inc. - Class A
2.5%
C000028788  
Shareholder Report [Line Items]  
Fund Name Voya Growth and Income Portfolio
Class Name Class I
Trading Symbol IIVGX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Voya Growth and Income Portfolio for the period of January 1, 2026 to June 30, 2026.
Additional Information Phone Number 1-800-992-0180
Expenses [Text Block]

What were the Fund’s costs for the last six months?  (based on a hypothetical $10,000 investment)

Table Summary
Class Name
Costs of $10K investment
Costs paid as % of $10K investment (Annualized)
Class I
$35
0.68%
Expenses Paid, Amount $ 35
Expense Ratio, Percent 0.68%
AssetsNet $ 2,770,379,970
Holdings Count | Holding 76
InvestmentCompanyPortfolioTurnover 62.00%
Additional Fund Statistics [Text Block]

Fund Statistics 

  • Total Net Assets$2,770,379,970
  • # of Portfolio Holdings76
  • Portfolio Turnover Rate62%
Holdings [Text Block]

Portfolio Composition

A graphical representation of Investments made.
Table Summary
Value
Value
Liabilities in Excess of Other Assets
(0.2)%
Short-Term Investments
1.0%
Common Stock
99.2%

Sector Allocation 

A graphical representation of Investments made.
Table Summary
Value
Value
Information Technology
34.8%
Financials
11.6%
Communication Services
9.9%
Health Care
9.8%
Consumer Discretionary
8.8%
Industrials
8.7%
Consumer Staples
4.4%
Materials
3.7%
Energy
3.2%
Utilities
2.2%
Real Estate
2.1%
Short-Term Investments
1.0%
Liabilities in Excess of Other Assets
(0.2)%
Largest Holdings [Text Block]

Top 10 Holdings 

Table Summary
Apple, Inc.
7.4%
Alphabet, Inc. - Class A
6.5%
Amazon.com, Inc.
5.1%
Micron Technology, Inc.
4.2%
NVIDIA Corp.
4.0%
Broadcom, Inc.
3.5%
JPMorgan Chase & Co.
3.2%
International Business Machines Corp.
3.1%
Cisco Systems, Inc.
3.1%
Meta Platforms, Inc. - Class A
2.5%
C000028789  
Shareholder Report [Line Items]  
Fund Name Voya Growth and Income Portfolio
Class Name Class S
Trading Symbol ISVGX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Voya Growth and Income Portfolio for the period of January 1, 2026 to June 30, 2026.
Additional Information Phone Number 1-800-992-0180
Expenses [Text Block]

What were the Fund’s costs for the last six months?  (based on a hypothetical $10,000 investment)

Table Summary
Class Name
Costs of $10K investment
Costs paid as % of $10K investment (Annualized)
Class S
$48
0.93%
Expenses Paid, Amount $ 48
Expense Ratio, Percent 0.93%
AssetsNet $ 2,770,379,970
Holdings Count | Holding 76
InvestmentCompanyPortfolioTurnover 62.00%
Additional Fund Statistics [Text Block]

Fund Statistics 

  • Total Net Assets$2,770,379,970
  • # of Portfolio Holdings76
  • Portfolio Turnover Rate62%
Holdings [Text Block]

Portfolio Composition

A graphical representation of Investments made.
Table Summary
Value
Value
Liabilities in Excess of Other Assets
(0.2)%
Short-Term Investments
1.0%
Common Stock
99.2%

Sector Allocation 

A graphical representation of Investments made.
Table Summary
Value
Value
Information Technology
34.8%
Financials
11.6%
Communication Services
9.9%
Health Care
9.8%
Consumer Discretionary
8.8%
Industrials
8.7%
Consumer Staples
4.4%
Materials
3.7%
Energy
3.2%
Utilities
2.2%
Real Estate
2.1%
Short-Term Investments
1.0%
Liabilities in Excess of Other Assets
(0.2)%
Largest Holdings [Text Block]

Top 10 Holdings 

Table Summary
Apple, Inc.
7.4%
Alphabet, Inc. - Class A
6.5%
Amazon.com, Inc.
5.1%
Micron Technology, Inc.
4.2%
NVIDIA Corp.
4.0%
Broadcom, Inc.
3.5%
JPMorgan Chase & Co.
3.2%
International Business Machines Corp.
3.1%
Cisco Systems, Inc.
3.1%
Meta Platforms, Inc. - Class A
2.5%
C000074892  
Shareholder Report [Line Items]  
Fund Name Voya Growth and Income Portfolio
Class Name Class S2
Trading Symbol IGISX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Voya Growth and Income Portfolio for the period of January 1, 2026 to June 30, 2026.
Additional Information Phone Number 1-800-992-0180
Expenses [Text Block]

What were the Fund’s costs for the last six months?  (based on a hypothetical $10,000 investment)

Table Summary
Class Name
Costs of $10K investment
Costs paid as % of $10K investment (Annualized)
Class S2
$56
1.08%
Expenses Paid, Amount $ 56
Expense Ratio, Percent 1.08%
AssetsNet $ 2,770,379,970
Holdings Count | Holding 76
InvestmentCompanyPortfolioTurnover 62.00%
Additional Fund Statistics [Text Block]

Fund Statistics 

  • Total Net Assets$2,770,379,970
  • # of Portfolio Holdings76
  • Portfolio Turnover Rate62%
Holdings [Text Block]

Portfolio Composition

A graphical representation of Investments made.
Table Summary
Value
Value
Liabilities in Excess of Other Assets
(0.2)%
Short-Term Investments
1.0%
Common Stock
99.2%

Sector Allocation 

A graphical representation of Investments made.
Table Summary
Value
Value
Information Technology
34.8%
Financials
11.6%
Communication Services
9.9%
Health Care
9.8%
Consumer Discretionary
8.8%
Industrials
8.7%
Consumer Staples
4.4%
Materials
3.7%
Energy
3.2%
Utilities
2.2%
Real Estate
2.1%
Short-Term Investments
1.0%
Liabilities in Excess of Other Assets
(0.2)%
Largest Holdings [Text Block]

Top 10 Holdings 

Table Summary
Apple, Inc.
7.4%
Alphabet, Inc. - Class A
6.5%
Amazon.com, Inc.
5.1%
Micron Technology, Inc.
4.2%
NVIDIA Corp.
4.0%
Broadcom, Inc.
3.5%
JPMorgan Chase & Co.
3.2%
International Business Machines Corp.
3.1%
Cisco Systems, Inc.
3.1%
Meta Platforms, Inc. - Class A
2.5%