| Shareholder Report | 12 Months Ended |
| Nov. 30, 2024 USD ($) Holding |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | Federated Hermes Fixed Income Securities, Inc. |
| Entity Central Index Key | 0000879569 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Nov. 30, 2024 |
| C000026757 | |
| Shareholder Report [Line Items] | |
| Fund Name | Federated Hermes Strategic Income Fund |
| Class Name | Class A Shares |
| Trading Symbol | STIAX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Federated Hermes Strategic Income Fund (the "Fund") for the period of December 1, 2023 to November 30, 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) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class A Shares $99 0.94% |
| Expenses Paid, Amount | $ 99 |
| Expense Ratio, Percent | 0.94% |
| Factors Affecting Performance [Text Block] | Management's Discussion of Fund Performance The following discussion compares the performance of the Fund to a blend of indexes comprised of the 25% Bloomberg EM Seasoned ex Aggregate/Eurodollar Index/40% Bloomberg US Corporate High Yield 2% Issuer Capped Index/35% Bloomberg US Mortgage Backed Securities Index (the “Blended 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 a high level of current income by investing in three categories of fixed-income securities: domestic investment-grade, domestic noninvestment-grade and foreign. Top Contributors to Performance • A lower than Blended Index allocation to agency mortgage-backed securities and an overweight position in investment-grade corporate bonds aided relative performance. • Security selection within the mortgage-backed securities allocation contributed to relative Fund performance. • A bias for longer maturity bonds to underperform shorter maturity bonds (a yield curve steepener) contributed to relative Fund performance. Top Detractors from Performance • The Fund’s lower than Blended Index allocation to the high-yield sector hurt relative performance. • Security selection within the high-yield bond and emerging market bond allocations detracted from relative Fund performance. • On average, the Fund’s duration was slightly longer than the Blended Index for the reporting period. Volatility in interest rates and tactical repositioning hurt performance relative to the Blended Index. |
| 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] | Class A Shares with sales load Bloomberg US Aggregate Bond Index Blended Index Morningstar Multisector Bond Funds Average 11/30/2014 $9,552 $10,000 $10,000 $10,000 11/30/2015 $9,323 $10,097 $10,008 $9,830 11/30/2016 $9,959 $10,316 $10,827 $10,293 11/30/2017 $10,641 $10,648 $11,593 $10,987 11/30/2018 $10,475 $10,505 $11,456 $10,885 11/30/2019 $11,509 $11,639 $12,478 $11,806 11/30/2020 $12,149 $12,486 $13,195 $12,320 11/30/2021 $12,603 $12,342 $13,375 $12,667 11/30/2022 $11,106 $10,758 $11,973 $11,513 11/30/2023 $11,647 $10,885 $12,695 $12,061 11/30/2024 $12,955 $11,633 $14,298 $13,228 |
| Average Annual Return [Table Text Block] | Fund/Index 1 Year 5 Years 10 Years Class A Shares with sales load 6.24% 1.45% 2.62% Class A Shares without sales load 11.24% 2.40% 3.09% Bloomberg US Aggregate Bond Index 6.88% (0.01%) 1.52% Blended Index 12.63% 2.76% 3.64% Morningstar Multisector Bond Funds Average 9.68% 2.28% 2.80% |
| 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. |
| AssetsNet | $ 585,418,737 |
| Holdings Count | Holding | 300 |
| Advisory Fees Paid, Amount | $ 2,574,073 |
| InvestmentCompanyPortfolioTurnover | 14% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net Assets $585,418,737 Number of Investments 300 Portfolio Turnover 14% Total Advisory Fees Paid $2,574,073 |
| Holdings [Text Block] | Top Security Types (% of Net Assets) Footnote Reference * Value Value Purchased Call Options 0.1% Agency Risk Transfer Securities 0.2% Asset-Backed Securities 1.2% Common Stocks 1.6% Collaterized Mortgage Obligations 4.9% Cash Equivalents 5.9% U.S Treasuries 6.3% Foreign Governments/Agencies 14.5% Commerical Mortgage-Backed Securities 20.3% Corporate Debt Securities 46.5% Footnote Description Footnote * Reflects the pro rata portfolio composition of underlying affiliated investment companies (other than an affiliated money market fund) in which the Fund invested greater than 10% of its net assets as of the date specified above. Accordingly, the percentages of total net assets shown in the table will differ from those presented on the Portfolio of Investments. |
| Material Fund Change [Text Block] | |
| C000026759 | |
| Shareholder Report [Line Items] | |
| Fund Name | Federated Hermes Strategic Income Fund |
| Class Name | Class C Shares |
| Trading Symbol | SINCX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Federated Hermes Strategic Income Fund (the "Fund") for the period of December 1, 2023 to November 30, 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) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class C Shares $178 1.69% |
| Expenses Paid, Amount | $ 178 |
| Expense Ratio, Percent | 1.69% |
| Factors Affecting Performance [Text Block] | Management's Discussion of Fund Performance The following discussion compares the performance of the Fund to a blend of indexes comprised of the 25% Bloomberg EM Seasoned ex Aggregate/Eurodollar Index/40% Bloomberg US Corporate High Yield 2% Issuer Capped Index/35% Bloomberg US Mortgage Backed Securities Index (the “Blended 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 a high level of current income by investing in three categories of fixed-income securities: domestic investment-grade, domestic noninvestment-grade and foreign. Top Contributors to Performance • A lower than Blended Index allocation to agency mortgage-backed securities and an overweight position in investment-grade corporate bonds aided relative performance. • Security selection within the mortgage-backed securities allocation contributed to relative Fund performance. • A bias for longer maturity bonds to underperform shorter maturity bonds (a yield curve steepener) contributed to relative Fund performance. Top Detractors from Performance • The Fund’s lower than Blended Index allocation to the high-yield sector hurt relative performance. • Security selection within the high-yield bond and emerging market bond allocations detracted from relative Fund performance. • On average, the Fund’s duration was slightly longer than the Blended Index for the reporting period. Volatility in interest rates and tactical repositioning hurt performance relative to the Blended Index. |
| 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] | Class C Shares with sales load Bloomberg US Aggregate Bond Index Blended Index Morningstar Multisector Bond Funds Average 11/30/2014 $10,000 $10,000 $10,000 $10,000 11/30/2015 $9,687 $10,097 $10,008 $9,830 11/30/2016 $10,271 $10,316 $10,827 $10,293 11/30/2017 $10,892 $10,648 $11,593 $10,987 11/30/2018 $10,641 $10,505 $11,456 $10,885 11/30/2019 $11,619 $11,639 $12,478 $11,806 11/30/2020 $12,158 $12,486 $13,195 $12,320 11/30/2021 $12,518 $12,342 $13,375 $12,667 11/30/2022 $10,959 $10,758 $11,973 $11,513 11/30/2023 $11,493 $10,885 $12,695 $12,061 11/30/2024 $12,785 $11,633 $14,298 $13,228 |
| Average Annual Return [Table Text Block] | Fund/Index 1 Year 5 Years 10 Years Class C Shares with sales load 9.42% 1.60% 2.49% Class C Shares without sales load 10.42% 1.60% 2.49% Bloomberg US Aggregate Bond Index 6.88% (0.01%) 1.52% Blended Index 12.63% 2.76% 3.64% Morningstar Multisector Bond Funds Average 9.68% 2.28% 2.80% |
| 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. |
| AssetsNet | $ 585,418,737 |
| Holdings Count | Holding | 300 |
| Advisory Fees Paid, Amount | $ 2,574,073 |
| InvestmentCompanyPortfolioTurnover | 14% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net Assets $585,418,737 Number of Investments 300 Portfolio Turnover 14% Total Advisory Fees Paid $2,574,073 |
| Holdings [Text Block] | Top Security Types (% of Net Assets) Footnote Reference * Value Value Purchased Call Options 0.1% Agency Risk Transfer Securities 0.2% Asset-Backed Securities 1.2% Common Stocks 1.6% Collaterized Mortgage Obligations 4.9% Cash Equivalents 5.9% U.S Treasuries 6.3% Foreign Governments/Agencies 14.5% Commerical Mortgage-Backed Securities 20.3% Corporate Debt Securities 46.5% Footnote Description Footnote * Reflects the pro rata portfolio composition of underlying affiliated investment companies (other than an affiliated money market fund) in which the Fund invested greater than 10% of its net assets as of the date specified above. Accordingly, the percentages of total net assets shown in the table will differ from those presented on the Portfolio of Investments. |
| Material Fund Change [Text Block] | |
| C000026760 | |
| Shareholder Report [Line Items] | |
| Fund Name | Federated Hermes Strategic Income Fund |
| Class Name | Class F Shares |
| Trading Symbol | STFSX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Federated Hermes Strategic Income Fund (the "Fund") for the period of December 1, 2023 to November 30, 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) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class F Shares $99 0.94% |
| Expenses Paid, Amount | $ 99 |
| Expense Ratio, Percent | 0.94% |
| Factors Affecting Performance [Text Block] | Management's Discussion of Fund Performance The following discussion compares the performance of the Fund to a blend of indexes comprised of the 25% Bloomberg EM Seasoned ex Aggregate/Eurodollar Index/40% Bloomberg US Corporate High Yield 2% Issuer Capped Index/35% Bloomberg US Mortgage Backed Securities Index (the “Blended 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 a high level of current income by investing in three categories of fixed-income securities: domestic investment-grade, domestic noninvestment-grade and foreign. Top Contributors to Performance • A lower than Blended Index allocation to agency mortgage-backed securities and an overweight position in investment-grade corporate bonds aided relative performance. • Security selection within the mortgage-backed securities allocation contributed to relative Fund performance. • A bias for longer maturity bonds to underperform shorter maturity bonds (a yield curve steepener) contributed to relative Fund performance. Top Detractors from Performance • The Fund’s lower than Blended Index allocation to the high-yield sector hurt relative performance. • Security selection within the high-yield bond and emerging market bond allocations detracted from relative Fund performance. • On average, the Fund’s duration was slightly longer than the Blended Index for the reporting period. Volatility in interest rates and tactical repositioning hurt performance relative to the Blended Index. |
| 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] | Class F Shares with sales load Bloomberg US Aggregate Bond Index Blended Index Morningstar Multisector Bond Funds Average 11/30/2014 $9,902 $10,000 $10,000 $10,000 11/30/2015 $9,664 $10,097 $10,008 $9,830 11/30/2016 $10,327 $10,316 $10,827 $10,293 11/30/2017 $11,028 $10,648 $11,593 $10,987 11/30/2018 $10,854 $10,505 $11,456 $10,885 11/30/2019 $11,934 $11,639 $12,478 $11,806 11/30/2020 $12,589 $12,486 $13,195 $12,320 11/30/2021 $13,064 $12,342 $13,375 $12,667 11/30/2022 $11,515 $10,758 $11,973 $11,513 11/30/2023 $12,065 $10,885 $12,695 $12,061 11/30/2024 $13,433 $11,633 $14,298 $13,228 |
| Average Annual Return [Table Text Block] | Fund/Index 1 Year 5 Years 10 Years Class F Shares with sales load 9.22% 2.19% 3.00% Class F Shares without sales load 11.34% 2.39% 3.10% Bloomberg US Aggregate Bond Index 6.88% (0.01%) 1.52% Blended Index 12.63% 2.76% 3.64% Morningstar Multisector Bond Funds Average 9.68% 2.28% 2.80% |
| 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. |
| AssetsNet | $ 585,418,737 |
| Holdings Count | Holding | 300 |
| Advisory Fees Paid, Amount | $ 2,574,073 |
| InvestmentCompanyPortfolioTurnover | 14% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net Assets $585,418,737 Number of Investments 300 Portfolio Turnover 14% Total Advisory Fees Paid $2,574,073 |
| Holdings [Text Block] | Top Security Types (% of Net Assets) Footnote Reference * Value Value Purchased Call Options 0.1% Agency Risk Transfer Securities 0.2% Asset-Backed Securities 1.2% Common Stocks 1.6% Collaterized Mortgage Obligations 4.9% Cash Equivalents 5.9% U.S Treasuries 6.3% Foreign Governments/Agencies 14.5% Commerical Mortgage-Backed Securities 20.3% Corporate Debt Securities 46.5% Footnote Description Footnote * Reflects the pro rata portfolio composition of underlying affiliated investment companies (other than an affiliated money market fund) in which the Fund invested greater than 10% of its net assets as of the date specified above. Accordingly, the percentages of total net assets shown in the table will differ from those presented on the Portfolio of Investments. |
| Material Fund Change [Text Block] | |
| C000062222 | |
| Shareholder Report [Line Items] | |
| Fund Name | Federated Hermes Strategic Income Fund |
| Class Name | Institutional Shares |
| Trading Symbol | STISX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Federated Hermes Strategic Income Fund (the "Fund") for the period of December 1, 2023 to November 30, 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) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Institutional Shares $66 0.62% |
| Expenses Paid, Amount | $ 66 |
| Expense Ratio, Percent | 0.62% |
| Factors Affecting Performance [Text Block] | Management's Discussion of Fund Performance The following discussion compares the performance of the Fund to a blend of indexes comprised of the 25% Bloomberg EM Seasoned ex Aggregate/Eurodollar Index/40% Bloomberg US Corporate High Yield 2% Issuer Capped Index/35% Bloomberg US Mortgage Backed Securities Index (the “Blended 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 a high level of current income by investing in three categories of fixed-income securities: domestic investment-grade, domestic noninvestment-grade and foreign. Top Contributors to Performance • A lower than Blended Index allocation to agency mortgage-backed securities and an overweight position in investment-grade corporate bonds aided relative performance. • Security selection within the mortgage-backed securities allocation contributed to relative Fund performance. • A bias for longer maturity bonds to underperform shorter maturity bonds (a yield curve steepener) contributed to relative Fund performance. Top Detractors from Performance • The Fund’s lower than Blended Index allocation to the high-yield sector hurt relative performance. • Security selection within the high-yield bond and emerging market bond allocations detracted from relative Fund performance. • On average, the Fund’s duration was slightly longer than the Blended Index for the reporting period. Volatility in interest rates and tactical repositioning hurt performance relative to the Blended Index. |
| 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] | Institutional Shares Bloomberg US Aggregate Bond Index Blended Index Morningstar Multisector Bond Funds Average 11/30/2014 $10,000 $10,000 $10,000 $10,000 11/30/2015 $9,784 $10,097 $10,008 $9,830 11/30/2016 $10,481 $10,316 $10,827 $10,293 11/30/2017 $11,238 $10,648 $11,593 $10,987 11/30/2018 $11,097 $10,505 $11,456 $10,885 11/30/2019 $12,238 $11,639 $12,478 $11,806 11/30/2020 $12,951 $12,486 $13,195 $12,320 11/30/2021 $13,481 $12,342 $13,375 $12,667 11/30/2022 $11,922 $10,758 $11,973 $11,513 11/30/2023 $12,531 $10,885 $12,695 $12,061 11/30/2024 $13,994 $11,633 $14,298 $13,228 |
| Average Annual Return [Table Text Block] | Fund/Index 1 Year 5 Years 10 Years Institutional Shares 11.68% 2.72% 3.42% Bloomberg US Aggregate Bond Index 6.88% (0.01%) 1.52% Blended Index 12.63% 2.76% 3.64% Morningstar Multisector Bond Funds Average 9.68% 2.28% 2.80% |
| 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. |
| AssetsNet | $ 585,418,737 |
| Holdings Count | Holding | 300 |
| Advisory Fees Paid, Amount | $ 2,574,073 |
| InvestmentCompanyPortfolioTurnover | 14% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net Assets $585,418,737 Number of Investments 300 Portfolio Turnover 14% Total Advisory Fees Paid $2,574,073 |
| Holdings [Text Block] | Top Security Types (% of Net Assets) Footnote Reference * Value Value Purchased Call Options 0.1% Agency Risk Transfer Securities 0.2% Asset-Backed Securities 1.2% Common Stocks 1.6% Collaterized Mortgage Obligations 4.9% Cash Equivalents 5.9% U.S Treasuries 6.3% Foreign Governments/Agencies 14.5% Commerical Mortgage-Backed Securities 20.3% Corporate Debt Securities 46.5% Footnote Description Footnote * Reflects the pro rata portfolio composition of underlying affiliated investment companies (other than an affiliated money market fund) in which the Fund invested greater than 10% of its net assets as of the date specified above. Accordingly, the percentages of total net assets shown in the table will differ from those presented on the Portfolio of Investments. |
| Material Fund Change [Text Block] | |
| C000177003 | |
| Shareholder Report [Line Items] | |
| Fund Name | Federated Hermes Strategic Income Fund |
| Class Name | Class R6 Shares |
| Trading Symbol | STILX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Federated Hermes Strategic Income Fund (the "Fund") for the period of December 1, 2023 to November 30, 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) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class R6 Shares $65 0.61% |
| Expenses Paid, Amount | $ 65 |
| Expense Ratio, Percent | 0.61% |
| Factors Affecting Performance [Text Block] | Management's Discussion of Fund Performance The following discussion compares the performance of the Fund to a blend of indexes comprised of the 25% Bloomberg EM Seasoned ex Aggregate/Eurodollar Index/40% Bloomberg US Corporate High Yield 2% Issuer Capped Index/35% Bloomberg US Mortgage Backed Securities Index (the “Blended 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 a high level of current income by investing in three categories of fixed-income securities: domestic investment-grade, domestic noninvestment-grade and foreign. Top Contributors to Performance • A lower than Blended Index allocation to agency mortgage-backed securities and an overweight position in investment-grade corporate bonds aided relative performance. • Security selection within the mortgage-backed securities allocation contributed to relative Fund performance. • A bias for longer maturity bonds to underperform shorter maturity bonds (a yield curve steepener) contributed to relative Fund performance. Top Detractors from Performance • The Fund’s lower than Blended Index allocation to the high-yield sector hurt relative performance. • Security selection within the high-yield bond and emerging market bond allocations detracted from relative Fund performance. • On average, the Fund’s duration was slightly longer than the Blended Index for the reporting period. Volatility in interest rates and tactical repositioning hurt performance relative to the Blended Index. |
| 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] | Class R6 Shares Bloomberg US Aggregate Bond Index Blended Index Morningstar Multisector Bond Funds Average 11/30/2014 $10,000 $10,000 $10,000 $10,000 11/30/2015 $9,761 $10,097 $10,008 $9,830 11/30/2016 $10,426 $10,316 $10,827 $10,293 11/30/2017 $11,177 $10,648 $11,593 $10,987 11/30/2018 $11,025 $10,505 $11,456 $10,885 11/30/2019 $12,167 $11,639 $12,478 $11,806 11/30/2020 $12,872 $12,486 $13,195 $12,320 11/30/2021 $13,397 $12,342 $13,375 $12,667 11/30/2022 $11,845 $10,758 $11,973 $11,513 11/30/2023 $12,462 $10,885 $12,695 $12,061 11/30/2024 $13,908 $11,633 $14,298 $13,228 |
| Average Annual Return [Table Text Block] | Fund/Index 1 Year 5 Years 10 Years Class R6 Shares 11.60% 2.71% 3.35% Bloomberg US Aggregate Bond Index 6.88% (0.01%) 1.52% Blended Index 12.63% 2.76% 3.64% Morningstar Multisector Bond Funds Average 9.68% 2.28% 2.80% |
| 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. |
| AssetsNet | $ 585,418,737 |
| Holdings Count | Holding | 300 |
| Advisory Fees Paid, Amount | $ 2,574,073 |
| InvestmentCompanyPortfolioTurnover | 14% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net Assets $585,418,737 Number of Investments 300 Portfolio Turnover 14% Total Advisory Fees Paid $2,574,073 |
| Holdings [Text Block] | Top Security Types (% of Net Assets) Footnote Reference * Value Value Purchased Call Options 0.1% Agency Risk Transfer Securities 0.2% Asset-Backed Securities 1.2% Common Stocks 1.6% Collaterized Mortgage Obligations 4.9% Cash Equivalents 5.9% U.S Treasuries 6.3% Foreign Governments/Agencies 14.5% Commerical Mortgage-Backed Securities 20.3% Corporate Debt Securities 46.5% Footnote Description Footnote * Reflects the pro rata portfolio composition of underlying affiliated investment companies (other than an affiliated money market fund) in which the Fund invested greater than 10% of its net assets as of the date specified above. Accordingly, the percentages of total net assets shown in the table will differ from those presented on the Portfolio of Investments. |
| Material Fund Change [Text Block] | |
