| Shareholder Report | 12 Months Ended |
| Dec. 31, 2024 USD ($) Holding |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | Federated Hermes Core Trust |
| Entity Central Index Key | 0001034106 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Dec. 31, 2024 |
| C000024828 | |
| Shareholder Report [Line Items] | |
| Fund Name | Mortgage Core Fund |
| No Trading Symbol [Flag] | true |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Mortgage Core Fund (the "Fund") for the period of January 1, 2024 to December 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report |
| Additional Information Phone Number | 1-800-341-7400 |
| Additional Information Website | FederatedHermes.com/us/FundInformation |
| Expenses [Text Block] | What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Mortgage Core Fund $2 0.02% |
| Expenses Paid, Amount | $ 2 |
| Expense Ratio, Percent | 0.02% |
| Factors Affecting Performance [Text Block] | Management's Discussion of Fund Performance The following discussion compares the performance of the Fund to the Bloomberg US Mortgage Backed Securities Index to show how the Fund’s performance compares to the returns of similar investments for the reporting period. See the Average Annual Total Returns table below for the returns of the Fund and related indexes, including the Bloomberg US Aggregate Bond Index, which represents the overall U.S. fixed-income market. The Fund seeks to provide total return. Top Contributors to Performance Security selection proved beneficial to relative performance, attributable to a preference for mortgage-backed securities issued by Fannie Mae and Freddie Mac over Ginnie Mae securities, which lagged their conventional counterparts. Interest rate strategy was additive to relative performance as duration and yield curve positioning made small positive contributions. The Fund used derivatives as a tool to assist in managing Fund duration and yield curve exposure. The principal derivatives the Fund used for these purposes were Treasury futures contracts. For the reporting period, the use of futures contracts positively contributed to Fund performance relative to the Index. Top Detractors from Performance There were no material detractors from relative Fund performance. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Mortgage Core Fund Bloomberg US Aggregate Bond Index Bloomberg US Mortgage Backed Securities Index 12/31/2014 $10,000 $10,000 $10,000 12/31/2015 $10,166 $10,055 $10,151 12/31/2016 $10,400 $10,321 $10,321 12/31/2017 $10,686 $10,687 $10,576 12/31/2018 $10,804 $10,688 $10,681 12/31/2019 $11,488 $11,620 $11,359 12/31/2020 $12,028 $12,492 $11,799 12/31/2021 $11,921 $12,299 $11,676 12/31/2022 $10,542 $10,699 $10,297 12/31/2023 $11,088 $11,291 $10,817 12/31/2024 $11,243 $11,432 $10,946 |
| Average Annual Return [Table Text Block] | Fund/Index 1 Year 5 Years 10 Years Mortgage Core Fund 1.39% (0.43%) 1.18% Bloomberg US Aggregate Bond Index Footnote Reference * 1.25% (0.33%) 1.35% Bloomberg US Mortgage Backed Securities Index 1.20% (0.74%) 0.91% |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. |
| Performance Table Market Index Changed [Text Block] | The Fund has designated the Bloomberg US Aggregate Bond Index as the new broad-based securities market index in accordance with the SEC’s revised requirements for such an index. |
| AssetsNet | $ 6,062,578,955 |
| Holdings Count | Holding | 504 |
| Advisory Fees Paid, Amount | $ 0 |
| InvestmentCompanyPortfolioTurnover | 113% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net Assets $6,062,578,955 Number of Investments 504 Portfolio Turnover 113% Portfolio Turnover (excluding purchases and sales from dollar-roll transactions) 26% Total Advisory Fees Paid $0 |
| Holdings [Text Block] | Top Security Types (% of Net Assets) Value Value Agency Risk Transfer Securities 0.2% Non-Agency Mortgage-Backed Securities 1.1% Asset-Backed Securities 2.0% Cash Equivalents 6.8% Collaterized Mortgage Obligations 8.6% U.S Government Agency Mortgage-Backed Securities 92.8% |
| Material Fund Change [Text Block] | |
| C000024830 | |
| Shareholder Report [Line Items] | |
| Fund Name | High Yield Bond Core Fund |
| No Trading Symbol [Flag] | true |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the High Yield Bond Core Fund (the "Fund") for the period of January 1, 2024 to December 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report |
| Additional Information Phone Number | 1-800-341-7400 |
| Additional Information Website | FederatedHermes.com/us/FundInformation |
| Expenses [Text Block] | What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment High Yield Bond Core Fund $4 0.04% |
| Expenses Paid, Amount | $ 4 |
| Expense Ratio, Percent | 0.04% |
| Factors Affecting Performance [Text Block] | Management's Discussion of Fund Performance The following discussion compares the performance of the Fund to the Bloomberg US Corporate High Yield 2% Issuer Capped Index (the “Index”) to show how the Fund’s performance compares to the returns of similar investments for the reporting period. See the Average Annual Total Returns table below for the returns of the Fund and related indexes, including the Bloomberg US Aggregate Bond Index, which represents the overall U.S. fixed-income market. The Fund seeks to provide high current income. Top Contributors to Performance The Fund was positively impacted by security selection in the Insurance-P&C, Consumer Cyclical Services, Building Materials, Independent Energy, Healthcare and Chemical industry sectors. The Fund was positively impacted by its underweight allocation to the underperforming Wireless Telecommunications sector. Specific Fund holdings that positively impacted performance relative to the Index included: Clydesdale Acquisition, Allied Universal Holdco, SRS Distribution, Condor Merger Sub and Ardonagh Midco 2 Limited. Top Detractors from Performance The Fund was negatively impacted by security selection in the Media & Entertainment, Packaging, Electric Utility, Pharmaceutical, Midstream and Finance Company industry sectors. The Fund was negatively impacted by its industry allocation, especially its underweight allocation to the strong performing Wireline Telecommunications and Retail industry sectors. It was also negatively impacted by its overweight allocation to the underperforming Automotive and Cable & Satellite industry sectors. Given the strong absolute performance during the period, the Fund’s cash position was also a drag on performance. Specific Fund holdings that negatively impacted performance relative to the Index included: iHeartCommunications, Ardagh Packaging, Enviva Inc., CSC Holdings LLC and CMG Media Corporation. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | High Yield Bond Core Fund Bloomberg US Aggregate Bond Index Bloomberg US Corporate High Yield 2% Issuer Capped Index 12/31/2014 $10,000 $10,000 $10,000 12/31/2015 $9,819 $10,055 $9,557 12/31/2016 $11,381 $10,321 $11,194 12/31/2017 $12,240 $10,687 $12,033 12/31/2018 $11,976 $10,688 $11,783 12/31/2019 $13,794 $11,620 $13,470 12/31/2020 $14,634 $12,492 $14,419 12/31/2021 $15,427 $12,299 $15,178 12/31/2022 $13,582 $10,699 $13,481 12/31/2023 $15,542 $11,291 $15,293 12/31/2024 $16,625 $11,432 $16,546 |
| Average Annual Return [Table Text Block] | Fund/Index 1 Year 5 Years 10 Years High Yield Bond Core Fund 6.97% 3.80% 5.21% Bloomberg US Aggregate Bond Index Footnote Reference * 1.25% (0.33%) 1.35% Bloomberg US Corporate High Yield 2% Issuer Capped Index 8.19% 4.20% 5.16% |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. |
| Performance Table Market Index Changed [Text Block] | The Fund has designated the Bloomberg US Aggregate Bond Index as the new broad-based securities market index in accordance with the SEC’s revised requirements for such an index. |
| AssetsNet | $ 926,200,990 |
| Holdings Count | Holding | 447 |
| Advisory Fees Paid, Amount | $ 0 |
| InvestmentCompanyPortfolioTurnover | 22% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net Assets $926,200,990 Number of Investments 447 Portfolio Turnover 22% Total Advisory Fees Paid $0 |
| Holdings [Text Block] | Top Index Classifications (% of Net Assets) Value Value Building Materials 3.9% Consumer Cyclical Services 3.9% Packaging 4.1% Health Care 4.4% Midstream 4.6% Gaming 5.2% Automotive 5.7% Cable Satellite 6.7% Insurance - P&C 8.3% Technology 12.7% |
| Material Fund Change [Text Block] | |
