v3.25.2
Shareholder Report
6 Months Ended
May 31, 2025
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSR
Amendment Flag false
Registrant Name Federated Hermes Income Securities Trust
Entity Central Index Key 0000789281
Entity Investment Company Type N-1A
Document Period End Date May 31, 2025
C000024648  
Shareholder Report [Line Items]  
Fund Name Federated Hermes Capital Income Fund
Class Name Class A Shares
Trading Symbol CAPAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Federated Hermes Capital Income Fund (the "Fund") for the period of December 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual Semi-Annual Shareholder Report
Additional Information [Text Block] You can find additional information at FederatedHermes.com/us/FundInformation. You can also request this information by contacting us at 1-800-341-7400, Option 4, or your financial advisor.
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 six months?

(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
$44
0.88%
Expenses Paid, Amount $ 44
Expense Ratio, Percent 0.88%
AssetsNet $ 647,966,334
Holdings Count | Holding 275
InvestmentCompanyPortfolioTurnover 14.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

  • Net Assets$647,966,334
  • Number of Investments275
  • Portfolio Turnover14%
Holdings [Text Block]

Top Security Types (% of Net Assets)Footnote Reference*

Group By Sector Chart
Value
Value
Commerical Mortgage-Backed Securities
0.6%
Cash Equivalents
1.1%
International Equity Securities
1.8%
Collaterized Mortgage Obligations
2.2%
Bank Loan Core Fund
3.4%
Foreign Fixed Income Securities
4.8%
Foreign Governments/Agencies
7.6%
U.S. Government Agency Mortgage-Backed Securities
12.1%
Domestic Fixed-Income Securities
24.7%
Domestic Equity Securities
42.1%
FootnoteDescription
Footnote*
Reflects the pro rata portfolio composition of underlying affiliated investment companies (other than an affiliated money market mutual 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.

Top Sectors - Equity (% of Equity Securities)

Group By Maturity Chart
Value
Value
Materials
3.3%
Real Estate
3.9%
Energy
4.2%
Consumer Staples
5.3%
Utilities
5.8%
Consumer Discretionary
8.2%
Communication Services
8.5%
Health Care
9.4%
Industrials
9.9%
Information Technology
20.5%
Financials
21.0%
Material Fund Change [Text Block]
C000024650  
Shareholder Report [Line Items]  
Fund Name Federated Hermes Capital Income Fund
Class Name Class C Shares
Trading Symbol CAPCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Federated Hermes Capital Income Fund (the "Fund") for the period of December 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual Semi-Annual Shareholder Report
Additional Information [Text Block] You can find additional information at FederatedHermes.com/us/FundInformation. You can also request this information by contacting us at 1-800-341-7400, Option 4, or your financial advisor.
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 six months?

(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
$85
1.72%
Expenses Paid, Amount $ 85
Expense Ratio, Percent 1.72%
AssetsNet $ 647,966,334
Holdings Count | Holding 275
InvestmentCompanyPortfolioTurnover 14.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

  • Net Assets$647,966,334
  • Number of Investments275
  • Portfolio Turnover14%
Holdings [Text Block]

Top Security Types (% of Net Assets)Footnote Reference*

Group By Sector Chart
Value
Value
Commerical Mortgage-Backed Securities
0.6%
Cash Equivalents
1.1%
International Equity Securities
1.8%
Collaterized Mortgage Obligations
2.2%
Bank Loan Core Fund
3.4%
Foreign Fixed Income Securities
4.8%
Foreign Governments/Agencies
7.6%
U.S. Government Agency Mortgage-Backed Securities
12.1%
Domestic Fixed-Income Securities
24.7%
Domestic Equity Securities
42.1%
FootnoteDescription
Footnote*
Reflects the pro rata portfolio composition of underlying affiliated investment companies (other than an affiliated money market mutual 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.

Top Sectors - Equity (% of Equity Securities)

Group By Maturity Chart
Value
Value
Materials
3.3%
Real Estate
3.9%
Energy
4.2%
Consumer Staples
5.3%
Utilities
5.8%
Consumer Discretionary
8.2%
Communication Services
8.5%
Health Care
9.4%
Industrials
9.9%
Information Technology
20.5%
Financials
21.0%
Material Fund Change [Text Block]
C000024651  
Shareholder Report [Line Items]  
Fund Name Federated Hermes Capital Income Fund
Class Name Class F Shares
Trading Symbol CAPFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Federated Hermes Capital Income Fund (the "Fund") for the period of December 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual Semi-Annual Shareholder Report
Additional Information [Text Block] You can find additional information at FederatedHermes.com/us/FundInformation. You can also request this information by contacting us at 1-800-341-7400, Option 4, or your financial advisor.
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 six months?

(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
$44
0.89%
Expenses Paid, Amount $ 44
Expense Ratio, Percent 0.89%
AssetsNet $ 647,966,334
Holdings Count | Holding 275
InvestmentCompanyPortfolioTurnover 14.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

  • Net Assets$647,966,334
  • Number of Investments275
  • Portfolio Turnover14%
Holdings [Text Block]

Top Security Types (% of Net Assets)Footnote Reference*

Group By Sector Chart
Value
Value
Commerical Mortgage-Backed Securities
0.6%
Cash Equivalents
1.1%
International Equity Securities
1.8%
Collaterized Mortgage Obligations
2.2%
Bank Loan Core Fund
3.4%
Foreign Fixed Income Securities
4.8%
Foreign Governments/Agencies
7.6%
U.S. Government Agency Mortgage-Backed Securities
12.1%
Domestic Fixed-Income Securities
24.7%
Domestic Equity Securities
42.1%
FootnoteDescription
Footnote*
Reflects the pro rata portfolio composition of underlying affiliated investment companies (other than an affiliated money market mutual 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.

Top Sectors - Equity (% of Equity Securities)

Group By Maturity Chart
Value
Value
Materials
3.3%
Real Estate
3.9%
Energy
4.2%
Consumer Staples
5.3%
Utilities
5.8%
Consumer Discretionary
8.2%
Communication Services
8.5%
Health Care
9.4%
Industrials
9.9%
Information Technology
20.5%
Financials
21.0%
Material Fund Change [Text Block]
C000130424  
Shareholder Report [Line Items]  
Fund Name Federated Hermes Capital Income Fund
Class Name Class R Shares
Trading Symbol CAPRX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Federated Hermes Capital Income Fund (the "Fund") for the period of December 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual Semi-Annual Shareholder Report
Additional Information [Text Block] You can find additional information at FederatedHermes.com/us/FundInformation. You can also request this information by contacting us at 1-800-341-7400, Option 4, or your financial advisor.
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 six months?

(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 R Shares
$48
0.97%
Expenses Paid, Amount $ 48
Expense Ratio, Percent 0.97%
AssetsNet $ 647,966,334
Holdings Count | Holding 275
InvestmentCompanyPortfolioTurnover 14.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

  • Net Assets$647,966,334
  • Number of Investments275
  • Portfolio Turnover14%
Holdings [Text Block]

Top Security Types (% of Net Assets)Footnote Reference*

Group By Sector Chart
Value
Value
Commerical Mortgage-Backed Securities
0.6%
Cash Equivalents
1.1%
International Equity Securities
1.8%
Collaterized Mortgage Obligations
2.2%
Bank Loan Core Fund
3.4%
Foreign Fixed Income Securities
4.8%
Foreign Governments/Agencies
7.6%
U.S. Government Agency Mortgage-Backed Securities
12.1%
Domestic Fixed-Income Securities
24.7%
Domestic Equity Securities
42.1%
FootnoteDescription
Footnote*
Reflects the pro rata portfolio composition of underlying affiliated investment companies (other than an affiliated money market mutual 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.

Top Sectors - Equity (% of Equity Securities)

Group By Maturity Chart
Value
Value
Materials
3.3%
Real Estate
3.9%
Energy
4.2%
Consumer Staples
5.3%
Utilities
5.8%
Consumer Discretionary
8.2%
Communication Services
8.5%
Health Care
9.4%
Industrials
9.9%
Information Technology
20.5%
Financials
21.0%
Material Fund Change [Text Block]
C000114947  
Shareholder Report [Line Items]  
Fund Name Federated Hermes Capital Income Fund
Class Name Institutional Shares
Trading Symbol CAPSX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Federated Hermes Capital Income Fund (the "Fund") for the period of December 1, 2024 to May 31, 2025.
Shareholder Report Annual or Semi-Annual Semi-Annual Shareholder Report
Additional Information [Text Block] You can find additional information at FederatedHermes.com/us/FundInformation. You can also request this information by contacting us at 1-800-341-7400, Option 4, or your financial advisor.
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 six months?

(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
$31
0.63%
Expenses Paid, Amount $ 31
Expense Ratio, Percent 0.63%
AssetsNet $ 647,966,334
Holdings Count | Holding 275
InvestmentCompanyPortfolioTurnover 14.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

  • Net Assets$647,966,334
  • Number of Investments275
  • Portfolio Turnover14%
Holdings [Text Block]

Top Security Types (% of Net Assets)Footnote Reference*

Group By Sector Chart
Value
Value
Commerical Mortgage-Backed Securities
0.6%
Cash Equivalents
1.1%
International Equity Securities
1.8%
Collaterized Mortgage Obligations
2.2%
Bank Loan Core Fund
3.4%
Foreign Fixed Income Securities
4.8%
Foreign Governments/Agencies
7.6%
U.S. Government Agency Mortgage-Backed Securities
12.1%
Domestic Fixed-Income Securities
24.7%
Domestic Equity Securities
42.1%
FootnoteDescription
Footnote*
Reflects the pro rata portfolio composition of underlying affiliated investment companies (other than an affiliated money market mutual 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.

Top Sectors - Equity (% of Equity Securities)

Group By Maturity Chart
Value
Value
Materials
3.3%
Real Estate
3.9%
Energy
4.2%
Consumer Staples
5.3%
Utilities
5.8%
Consumer Discretionary
8.2%
Communication Services
8.5%
Health Care
9.4%
Industrials
9.9%
Information Technology
20.5%
Financials
21.0%
Material Fund Change [Text Block]