Voya Investment Grade Credit Fund Performance Management - Class A I R6 W Shares [Member] - Voya Investment Grade Credit Fund |
Mar. 31, 2025 |
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| Prospectus [Line Items] | |
| Bar Chart and Performance Table [Heading] | <span style="color:#000000;font-family:Arial;font-size:11.16pt;font-weight:bold;text-transform:uppercase;">Performance Information</span> |
| Performance Narrative [Text Block] | The following information is intended to help you understand the risks of investing in the Fund. The following bar chart shows the changes in the Fund's performance from year to year, and the table compares the Fund's performance to the performance of a broad-based securities market index and an additional index with investment characteristics similar to those of the Fund for the same period. In 2024, the Investment Adviser changed the Fund’s primary benchmark from the Bloomberg U.S. Corporate Index to the Bloomberg U.S. Aggregate Bond Index in accordance with changes to regulatory disclosure requirements. The Fund continues to use the Bloomberg U.S. Corporate Index as an additional benchmark that the Investment Adviser believes more closely reflects the Fund’s principal investment strategies. The Fund's performance information reflects applicable fee waivers and/or expense limitations in effect during the period presented. Absent such fee waivers/expense limitations, if any, performance would have been lower. The bar chart shows the performance of the Fund's Class A shares. Sales charges are not reflected in the bar chart. If they were, returns would be less than those shown. However, the table includes all applicable fees and sales charges. Performance for other share classes would differ to the extent they have differences in their fees and expenses. Not all share classes of the Fund have the same inception date. For periods prior to the inception date of a share class, performance information shown for such class may be based on the performance of a different class that has a longer history of operation and, in some cases, that is no longer offered by the Fund. The Class A, Class I, Class R6 and Class W performance shown for the period prior to their inception dates is the performance of Class SMA shares (which commenced operations on June 8, 2007), adjusted to reflect certain fees and expenses paid by the class with a shorter history of continuous operations, as such fees and expenses were, at the time of the adjustment, expected generally to be higher than the fees and expenses of the class on which its performance information is based. The Fund's past performance (before and after taxes) is no guarantee of future results. For the most recent performance figures, go to https://individuals.voya.com/literature or call 1-800-992-0180. |
| Performance Past Does Not Indicate Future [Text] | <span style="font-family:Arial;font-size:9.30pt;font-style:italic;"> The Fund's past performance </span><span style="font-family:Arial;font-size:9.30pt;font-style:italic;margin-left:0%;">(before and after taxes) is no guarantee of future results.</span> |
| Performance Information Illustrates Variability of Returns [Text] | <span style="font-family:Arial;font-size:9.30pt;">The following bar chart shows </span><span style="font-family:Arial;font-size:9.30pt;margin-left:0%;">the changes in the Fund's performance from year to year, and the table compares the Fund's performance to the performance of a broad-based securities market index</span><span style="font-family:Arial;font-size:9.30pt;"> and an additional index with investment characteristics similar to those of the Fund </span><span style="font-family:Arial;font-size:9.30pt;margin-left:0%;">for the same period.</span> |
| Performance Additional Market Index [Text] | <span style="font-family:Arial;font-size:9.30pt;"> The </span><span style="font-family:Arial;font-size:9.30pt;margin-left:0%;">Fund continues to use the Bloomberg U.S. Corporate Index as an additional benchmark that the Investment Adviser believes more closely reflects the Fund’s principal investment strategies.</span> |
| Bar Chart Does Not Reflect Sales Loads [Text] | <span style="font-family:Arial;font-size:9.30pt;"> Sales charges </span><span style="font-family:Arial;font-size:9.30pt;margin-left:0%;">are not reflected in the bar chart. If they were, returns would be less than those shown.</span> |
| Bar Chart [Heading] | <span style="color:#FF8000;font-family:Arial;font-size:8.928pt;font-weight:bold;">Calendar Year Total Returns </span><span style="color:#000000;font-family:Arial;font-size:7.44pt;">Class A </span> <br/><span style="color:#000000;font-family:Arial;font-size:7.44pt;">(as of December 31 of each year)</span> |
| Bar Chart Closing [Text Block] | Best quarter:nd Quarter 202011.05%Worst quarter:nd Quarter 2022-8.19%Year-to-date total return:June 30, 20253.89% |
| Performance Table Heading | <span style="color:#FF8000;font-family:Arial;font-size:8.928pt;font-weight:bold;">Average Annual Total Returns </span><span style="font-family:Arial;font-size:7.44pt;">% </span> <br/><span style="font-family:Arial;font-size:7.44pt;">(for the periods ended December 31, 2024)</span> |
| Performance Table Narrative | After-tax returns are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor's tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their Fund shares through tax-advantaged arrangements such as 401(k) plans or individual retirement accounts (“IRAs”). In some cases the after-tax returns may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.After-tax returns are shown for Class A shares only. After-tax returns for other classes will vary. |
| Performance Table Does Reflect Sales Loads | <span style="font-family:Arial;font-size:9.30pt;"> However, the table includes all applicable </span><span style="font-family:Arial;font-size:9.30pt;margin-left:0%;">fees and sales charges.</span> |
| Performance Table Market Index Changed | <span style="font-family:Arial;font-size:9.30pt;"> In 2024, the Investment Adviser changed the Fund’s primary benchmark from the Bloomberg U.S. Corporate </span><span style="font-family:Arial;font-size:9.30pt;margin-left:0%;">Index to the Bloomberg U.S. Aggregate Bond Index in accordance with changes to regulatory disclosure requirements.</span> |
| Performance Table Uses Highest Federal Rate | <span style="color:#000000;font-family:Arial;font-size:9.30pt;margin-left:0%;">After-tax returns are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state and local taxes.</span> |
| Performance Table Not Relevant to Tax Deferred | <span style="color:#000000;font-family:Arial;font-size:9.30pt;"> Actual after-tax returns depend on an investor's tax situation and may differ from those </span><span style="color:#000000;font-family:Arial;font-size:9.30pt;margin-left:0%;">shown, and the after-tax returns shown are not relevant to investors who hold their Fund shares through tax-advantaged arrangements such as 401(k) plans or individual retirement accounts (</span><span style="color:#000000;font-family:Arial;font-size:9.30pt;">“IRAs”).</span> |
| Performance Table Explanation after Tax Higher | <span style="color:#000000;font-family:Arial;font-size:9.30pt;"> In some cases the after-tax returns may exceed the return </span><span style="color:#000000;font-family:Arial;font-size:9.30pt;margin-left:0%;">before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.</span> |
| Performance Table One Class of after Tax Shown [Text] | <span style="color:#000000;font-family:Arial;font-size:9.30pt;">After-tax returns are shown for Class A shares only. After-tax returns for other classes will vary.</span> |
| Index No Deduction for Fees, Expenses, or Taxes [Text] | <span style="font-family:Arial Narrow;font-size:8pt;">The index returns do not reflect deductions for fees, expenses, or taxes.</span> |
| Performance Availability Website Address [Text] | <span style="font-family:Arial;font-size:9.30pt;font-style:italic;">https://individuals.voya.com/literature</span> |
| Performance Availability Phone [Text] | <span style="font-family:Arial;font-size:9.30pt;font-style:italic;">1-800-992-0180</span> |
| Class A | |
| Prospectus [Line Items] | |
| Year to Date Return, Label [Optional Text] | <span style="font-family:Arial;font-size:7.44pt;font-weight:bold;margin-left:0.0pt;">Year-to-date total return:</span> |
| Bar Chart, Year to Date Return | 3.89% |
| Bar Chart, Year to Date Return, Date | Jun. 30, 2025 |
| Highest Quarterly Return, Label [Optional Text] | <span style="font-family:Arial;font-size:7.44pt;font-weight:bold;margin-left:0.0pt;">Best quarter:</span> |
| Highest Quarterly Return | 11.05% |
| Highest Quarterly Return, Date | Jun. 30, 2020 |
| Lowest Quarterly Return, Label [Optional Text] | <span style="font-family:Arial;font-size:7.44pt;font-weight:bold;margin-left:0.0pt;">Worst quarter:</span> |
| Lowest Quarterly Return | (8.19%) |
| Lowest Quarterly Return, Date | Jun. 30, 2022 |