XML 69 R7.htm IDEA: XBRL DOCUMENT v3.25.4
Federated Hermes Corporate Bond Strategy Portfolio Performance Management - Federated Hermes Corporate Bond Strategy Portfolio
Dec. 30, 2025
Prospectus [Line Items]  
Bar Chart and Performance Table [Heading] <span style="color:#000000;font-family:Arial;font-size:8pt;font-weight:bold;text-transform:uppercase;">Performance: Bar Chart and Table</span><span style="color:#000000;font-family:Arial;font-size:8.5pt;font-weight:bold;">Risk/Return Bar Chart</span>
Performance Narrative [Text Block] The bar chart and performance table below reflect historical performance data for the Fund and are intended to help you analyze the Fund’s investment risks in light of its historical returns. The bar chart shows the variability of the Fund’s total returns on a calendar year-by-year basis. The Average Annual Total Return Table shows returns averaged over the stated periods, and includes comparative performance information with a broad-based securities market index. The Fund’s performance is also compared to secondary indexes to show how the Fund’s performance compares with the returns of indexes with similar investments. The Fund’s performance will fluctuate, and past performance (before and after taxes) is not necessarily an indication of future results. Updated performance information for the Fund is available by calling 1-800-341-7400.
Performance Past Does Not Indicate Future [Text] <span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;">The Fund’s performance will fluctuate, and past performance (before and after taxes) is not necessarily an indication of future results.</span>
Performance Information Illustrates Variability of Returns [Text] <span style="color:#000000;font-family:Times New Roman;font-size:10pt;margin-left:10pt;">The bar chart and performance table below reflect historical performance data for the Fund and are intended to help you </span><span style="color:#000000;font-family:Times New Roman;font-size:10pt;">analyze the Fund’s investment risks in light of its historical returns. The bar chart shows the variability of the Fund’s total returns on a calendar year-by-year basis.</span>
Bar Chart [Heading] Federated Hermes Corporate Bond Strategy Portfolio
Bar Chart Closing [Text Block]

Within the periods shown in the bar chart, the Fund's highest quarterly return was 11.68% (quarter ended June 30, 2020). Its lowest quarterly return was (7.70)% (quarter ended June 30, 2022).
Performance Table Heading <span style="color:#000000;font-family:Arial;font-size:8.5pt;font-weight:bold;">Average Annual Total Return Table</span>
Performance Table Narrative In addition to Return Before Taxes, Return After Taxes is shown for the Fund to illustrate the effect of federal taxes on Fund returns. Actual after-tax returns depend on each investor’s personal tax situation, and are likely to differ from those shown. After-tax returns are calculated using a standard set of assumptions. The stated returns assume the highest historical federal income and capital gains tax rates. These after-tax returns do not reflect the effect of any applicable state and local taxes.After-tax returns are not relevant to investors holding Shares through a 401(k) plan, an Individual Retirement Account or other tax-advantaged investment plan.(For the Period Ended December 31, 2025)
Performance Table Uses Highest Federal Rate <span style="color:#000000;font-family:Times New Roman;font-size:10pt;">After-tax returns are calculated using a standard set of assumptions. The stated returns assume the highest </span><span style="color:#000000;font-family:Times New Roman;font-size:10pt;">historical </span><span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;">federal</span><span style="color:#000000;font-family:Times New Roman;font-size:10pt;"> income and capital gains tax rates. These after-tax returns do </span><span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;">not</span><span style="color:#000000;font-family:Times New Roman;font-size:10pt;"> reflect the effect of any applicable </span><span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;">state</span><span style="color:#000000;font-family:Times New Roman;font-size:10pt;"> and </span><span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:bold;">local</span><span style="color:#000000;font-family:Times New Roman;font-size:10pt;"> taxes.</span>
Performance Table Not Relevant to Tax Deferred <span style="color:#000000;font-family:Times New Roman;font-size:10pt;">After-tax returns are not relevant to investors holding Shares through a 401(k) plan, an Individual Retirement Account or other tax-advantaged investment plan.</span>
Performance Availability Phone [Text] <span style="color:#000000;font-family:Times New Roman;font-size:10pt;">1-800-341-7400</span>
Federated Hermes Corporate Bond Strategy Portfolio  
Prospectus [Line Items]  
Highest Quarterly Return, Label [Optional Text] highest quarterly return
Highest Quarterly Return 11.68%
Highest Quarterly Return, Date Jun. 30, 2020
Lowest Quarterly Return, Label [Optional Text] lowest quarterly return
Lowest Quarterly Return (7.70%)
Lowest Quarterly Return, Date Jun. 30, 2022