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 Intermediate Bond Portfolio
Entity Central Index Key 0000002646
Entity Investment Company Type N-1A
Document Period End Date Jun. 30, 2026
Shareholder Report Annual or Semi-Annual Semi-Annual Shareholder Report
C000023849  
Shareholder Report [Line Items]  
Fund Name Voya Intermediate Bond Portfolio
Class Name Class ADV
Trading Symbol IIBPX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Voya Intermediate Bond 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
$51
1.03%
Expenses Paid, Amount $ 51
Expense Ratio, Percent 1.03%
AssetsNet $ 891,168,946
Holdings Count | Holding 2,034
InvestmentCompanyPortfolioTurnover 64.00%
Additional Fund Statistics [Text Block]

Fund Statistics 

  • Total Net Assets$891,168,946
  • # of Portfolio Holdings2,034
  • Portfolio Turnover Rate64%
Holdings [Text Block]

Investment Type Allocation

A graphical representation of Investments made.
Table Summary
Value
Value
Assets in Excess of Other Liabilities
6.9%
Municipal Bonds
0.2%
Exchange-Traded Funds
1.0%
Bank Loans
2.0%
U.S. Treasury Obligations
3.4%
Commercial Mortgage-Backed Securities
5.3%
Mutual Funds
8.4%
Asset-Backed Securities
11.5%
Collateralized Mortgage Obligations
17.0%
U.S. Government Agency Obligations
18.9%
Corporate Bonds/Notes
25.4%
Largest Holdings [Text Block]

Top 10 Holdings 

Table Summary
Voya VACS Series EMHCD Fund
6.6%
Uniform Mortgage-Backed Securities, 2.000%, 07/01/56
2.9%
Voya VACS Series SC Fund
1.8%
United States Treasury Notes, 4.125%, 06/30/31
1.2%
Uniform Mortgage-Backed Securities, 2.500%, 02/01/52
1.2%
Voya Ultra Short Income ETF
1.0%
Ginnie Mae, 5.500%, 07/20/56
1.0%
Uniform Mortgage-Backed Securities, 2.000%, 12/01/51
0.9%
Freddie Mac REMIC Trust - Class ZQ, 5.500%, 03/25/54
0.8%
Dryden 104 CLO Ltd. - Class A1R, 4.932%, 08/20/34
0.8%
C000028784  
Shareholder Report [Line Items]  
Fund Name Voya Intermediate Bond Portfolio
Class Name Class I
Trading Symbol IPIIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Voya Intermediate Bond 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
$26
0.53%
Expenses Paid, Amount $ 26
Expense Ratio, Percent 0.53%
AssetsNet $ 891,168,946
Holdings Count | Holding 2,034
InvestmentCompanyPortfolioTurnover 64.00%
Additional Fund Statistics [Text Block]

Fund Statistics 

  • Total Net Assets$891,168,946
  • # of Portfolio Holdings2,034
  • Portfolio Turnover Rate64%
Holdings [Text Block]

Investment Type Allocation

A graphical representation of Investments made.
Table Summary
Value
Value
Assets in Excess of Other Liabilities
6.9%
Municipal Bonds
0.2%
Exchange-Traded Funds
1.0%
Bank Loans
2.0%
U.S. Treasury Obligations
3.4%
Commercial Mortgage-Backed Securities
5.3%
Mutual Funds
8.4%
Asset-Backed Securities
11.5%
Collateralized Mortgage Obligations
17.0%
U.S. Government Agency Obligations
18.9%
Corporate Bonds/Notes
25.4%
Largest Holdings [Text Block]

Top 10 Holdings 

Table Summary
Voya VACS Series EMHCD Fund
6.6%
Uniform Mortgage-Backed Securities, 2.000%, 07/01/56
2.9%
Voya VACS Series SC Fund
1.8%
United States Treasury Notes, 4.125%, 06/30/31
1.2%
Uniform Mortgage-Backed Securities, 2.500%, 02/01/52
1.2%
Voya Ultra Short Income ETF
1.0%
Ginnie Mae, 5.500%, 07/20/56
1.0%
Uniform Mortgage-Backed Securities, 2.000%, 12/01/51
0.9%
Freddie Mac REMIC Trust - Class ZQ, 5.500%, 03/25/54
0.8%
Dryden 104 CLO Ltd. - Class A1R, 4.932%, 08/20/34
0.8%
C000028785  
Shareholder Report [Line Items]  
Fund Name Voya Intermediate Bond Portfolio
Class Name Class S
Trading Symbol IPISX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Voya Intermediate Bond 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
$39
0.78%
Expenses Paid, Amount $ 39
Expense Ratio, Percent 0.78%
AssetsNet $ 891,168,946
Holdings Count | Holding 2,034
InvestmentCompanyPortfolioTurnover 64.00%
Additional Fund Statistics [Text Block]

Fund Statistics 

  • Total Net Assets$891,168,946
  • # of Portfolio Holdings2,034
  • Portfolio Turnover Rate64%
Holdings [Text Block]

Investment Type Allocation

A graphical representation of Investments made.
Table Summary
Value
Value
Assets in Excess of Other Liabilities
6.9%
Municipal Bonds
0.2%
Exchange-Traded Funds
1.0%
Bank Loans
2.0%
U.S. Treasury Obligations
3.4%
Commercial Mortgage-Backed Securities
5.3%
Mutual Funds
8.4%
Asset-Backed Securities
11.5%
Collateralized Mortgage Obligations
17.0%
U.S. Government Agency Obligations
18.9%
Corporate Bonds/Notes
25.4%
Largest Holdings [Text Block]

Top 10 Holdings 

Table Summary
Voya VACS Series EMHCD Fund
6.6%
Uniform Mortgage-Backed Securities, 2.000%, 07/01/56
2.9%
Voya VACS Series SC Fund
1.8%
United States Treasury Notes, 4.125%, 06/30/31
1.2%
Uniform Mortgage-Backed Securities, 2.500%, 02/01/52
1.2%
Voya Ultra Short Income ETF
1.0%
Ginnie Mae, 5.500%, 07/20/56
1.0%
Uniform Mortgage-Backed Securities, 2.000%, 12/01/51
0.9%
Freddie Mac REMIC Trust - Class ZQ, 5.500%, 03/25/54
0.8%
Dryden 104 CLO Ltd. - Class A1R, 4.932%, 08/20/34
0.8%
C000074893  
Shareholder Report [Line Items]  
Fund Name Voya Intermediate Bond Portfolio
Class Name Class S2
Trading Symbol IIBTX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Voya Intermediate Bond 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
$46
0.93%
Expenses Paid, Amount $ 46
Expense Ratio, Percent 0.93%
AssetsNet $ 891,168,946
Holdings Count | Holding 2,034
InvestmentCompanyPortfolioTurnover 64.00%
Additional Fund Statistics [Text Block]

Fund Statistics 

  • Total Net Assets$891,168,946
  • # of Portfolio Holdings2,034
  • Portfolio Turnover Rate64%
Holdings [Text Block]

Investment Type Allocation

A graphical representation of Investments made.
Table Summary
Value
Value
Assets in Excess of Other Liabilities
6.9%
Municipal Bonds
0.2%
Exchange-Traded Funds
1.0%
Bank Loans
2.0%
U.S. Treasury Obligations
3.4%
Commercial Mortgage-Backed Securities
5.3%
Mutual Funds
8.4%
Asset-Backed Securities
11.5%
Collateralized Mortgage Obligations
17.0%
U.S. Government Agency Obligations
18.9%
Corporate Bonds/Notes
25.4%
Largest Holdings [Text Block]

Top 10 Holdings 

Table Summary
Voya VACS Series EMHCD Fund
6.6%
Uniform Mortgage-Backed Securities, 2.000%, 07/01/56
2.9%
Voya VACS Series SC Fund
1.8%
United States Treasury Notes, 4.125%, 06/30/31
1.2%
Uniform Mortgage-Backed Securities, 2.500%, 02/01/52
1.2%
Voya Ultra Short Income ETF
1.0%
Ginnie Mae, 5.500%, 07/20/56
1.0%
Uniform Mortgage-Backed Securities, 2.000%, 12/01/51
0.9%
Freddie Mac REMIC Trust - Class ZQ, 5.500%, 03/25/54
0.8%
Dryden 104 CLO Ltd. - Class A1R, 4.932%, 08/20/34
0.8%