Shareholder Report
|
6 Months Ended |
|
Feb. 28, 2025
USD ($)
Holding
|
|---|
| Shareholder Report [Line Items] |
|
| Document Type |
N-CSRS
|
| Amendment Flag |
false
|
| Registrant Name |
Federated Hermes Municipal Securities Income Trust
|
| Entity Central Index Key |
0000866700
|
| Entity Investment Company Type |
N-1A
|
| Document Period End Date |
Feb. 28, 2025
|
| C000070760 [Member] |
|
| Shareholder Report [Line Items] |
|
| Fund Name |
Federated Hermes Ohio Municipal Income Fund
|
| Class Name |
Class A Shares
|
| Trading Symbol |
OMIAX
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about the Federated Hermes Ohio Municipal Income Fund (the “Fund”) for the period of September 1, 2024 to February 28, 2025.
|
| Shareholder Report Annual or Semi-Annual |
semi-annual shareholder report
|
| Additional Information [Text Block] |
You can find additional information about the Fund 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 |
$38 |
0.77% |
|
| Expenses Paid, Amount |
$ 38
|
| Expense Ratio, Percent |
0.77%
|
| Net Assets |
$ 80,200,561
|
| Holdings Count | Holding |
107
|
| Investment Company Portfolio Turnover |
13.00%
|
| Additional Fund Statistics [Text Block] |
Key Fund Statistics
| Net Assets |
$80,200,561 |
| Number of Investments |
107 |
| Portfolio Turnover Rate |
13% |
|
| Holdings [Text Block] |
Fund Holdings Top Sectors
(% of Net Assets)
|
| C000024703 [Member] |
|
| Shareholder Report [Line Items] |
|
| Fund Name |
Federated Hermes Ohio Municipal Income Fund
|
| Class Name |
Class F Shares
|
| Trading Symbol |
OMIFX
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about the Federated Hermes Ohio Municipal Income Fund (the “Fund”) for the period of September 1, 2024 to February 28, 2025.
|
| Shareholder Report Annual or Semi-Annual |
semi-annual shareholder report
|
| Additional Information [Text Block] |
You can find additional information about the Fund 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 |
$46 |
0.92% |
|
| Expenses Paid, Amount |
$ 46
|
| Expense Ratio, Percent |
0.92%
|
| Net Assets |
$ 80,200,561
|
| Holdings Count | Holding |
107
|
| Investment Company Portfolio Turnover |
13.00%
|
| Additional Fund Statistics [Text Block] |
Key Fund Statistics
| Net Assets |
$80,200,561 |
| Number of Investments |
107 |
| Portfolio Turnover Rate |
13% |
|
| Holdings [Text Block] |
Fund Holdings Top Sectors
(% of Net Assets)
|
| C000219236 [Member] |
|
| Shareholder Report [Line Items] |
|
| Fund Name |
Federated Hermes Ohio Municipal Income Fund
|
| Class Name |
Institutional Shares
|
| Trading Symbol |
OMIIX
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about the Federated Hermes Ohio Municipal Income Fund (the “Fund”) for the period of September 1, 2024 to February 28, 2025.
|
| Shareholder Report Annual or Semi-Annual |
semi-annual shareholder report
|
| Additional Information [Text Block] |
You can find additional information about the Fund 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 |
$26 |
0.52% |
|
| Expenses Paid, Amount |
$ 26
|
| Expense Ratio, Percent |
0.52%
|
| Net Assets |
$ 80,200,561
|
| Holdings Count | Holding |
107
|
| Investment Company Portfolio Turnover |
13.00%
|
| Additional Fund Statistics [Text Block] |
Key Fund Statistics
| Net Assets |
$80,200,561 |
| Number of Investments |
107 |
| Portfolio Turnover Rate |
13% |
|
| Holdings [Text Block] |
Fund Holdings Top Sectors
(% of Net Assets)
|
| C000024704 [Member] |
|
| Shareholder Report [Line Items] |
|
| Fund Name |
Federated Hermes Pennsylvania Municipal Income Fund
|
| Class Name |
Class A Shares
|
| Trading Symbol |
PAMFX
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about the Federated Hermes Pennsylvania Municipal Income Fund (the “Fund”) for the period of September 1, 2024 to February 28, 2025.
|
| Shareholder Report Annual or Semi-Annual |
semi-annual shareholder report
|
| Additional Information [Text Block] |
You can find additional information about the Fund 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 |
$38 |
0.76% |
|
| Expenses Paid, Amount |
$ 38
|
| Expense Ratio, Percent |
0.76%
|
| Net Assets |
$ 101,022,428
|
| Holdings Count | Holding |
97
|
| Investment Company Portfolio Turnover |
19.00%
|
| Additional Fund Statistics [Text Block] |
Key Fund Statistics
| Net Assets |
$101,022,428 |
| Number of Investments |
97 |
| Portfolio Turnover Rate |
19% |
|
| Holdings [Text Block] |
Fund Holdings Top Sectors
(% of Net Assets)
|
| C000219237 [Member] |
|
| Shareholder Report [Line Items] |
|
| Fund Name |
Federated Hermes Pennsylvania Municipal Income Fund
|
| Class Name |
Institutional Shares
|
| Trading Symbol |
PAMIX
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about the Federated Hermes Pennsylvania Municipal Income Fund (the “Fund”) for the period of September 1, 2024 to February 28, 2025.
|
| Shareholder Report Annual or Semi-Annual |
semi-annual shareholder report
|
| Additional Information [Text Block] |
You can find additional information about the Fund 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 |
$26 |
0.53% |
|
| Expenses Paid, Amount |
$ 26
|
| Expense Ratio, Percent |
0.53%
|
| Net Assets |
$ 101,022,428
|
| Holdings Count | Holding |
97
|
| Investment Company Portfolio Turnover |
19.00%
|
| Additional Fund Statistics [Text Block] |
Key Fund Statistics
| Net Assets |
$101,022,428 |
| Number of Investments |
97 |
| Portfolio Turnover Rate |
19% |
|
| Holdings [Text Block] |
Fund Holdings Top Sectors
(% of Net Assets)
|
| C000034361 [Member] |
|
| Shareholder Report [Line Items] |
|
| Fund Name |
Federated Hermes Municipal High Yield Advantage Fund
|
| Class Name |
Class A Shares
|
| Trading Symbol |
FMOAX
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about the Federated Hermes Municipal High Yield Advantage Fund (the “Fund”) for the period of September 1, 2024 to February 28, 2025.
|
| Shareholder Report Annual or Semi-Annual |
semi-annual shareholder report
|
| Additional Information [Text Block] |
You can find additional information about the Fund 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 |
$45 |
0.89% |
|
| Expenses Paid, Amount |
$ 45
|
| Expense Ratio, Percent |
0.89%
|
| Net Assets |
$ 479,698,986
|
| Holdings Count | Holding |
370
|
| Investment Company Portfolio Turnover |
15.00%
|
| Additional Fund Statistics [Text Block] |
Key Fund Statistics
| Net Assets |
$479,698,986 |
| Number of Investments |
370 |
| Portfolio Turnover Rate |
15% |
|
| Holdings [Text Block] |
Fund Holdings Top Sectors
(% of Net Assets)
|
| C000034363 [Member] |
|
| Shareholder Report [Line Items] |
|
| Fund Name |
Federated Hermes Municipal High Yield Advantage Fund
|
| Class Name |
Class C Shares
|
| Trading Symbol |
FMNCX
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about the Federated Hermes Municipal High Yield Advantage Fund (the “Fund”) for the period of September 1, 2024 to February 28, 2025.
|
| Shareholder Report Annual or Semi-Annual |
semi-annual shareholder report
|
| Additional Information [Text Block] |
You can find additional information about the Fund 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 |
$82 |
1.64% |
|
| Expenses Paid, Amount |
$ 82
|
| Expense Ratio, Percent |
1.64%
|
| Net Assets |
$ 479,698,986
|
| Holdings Count | Holding |
370
|
| Investment Company Portfolio Turnover |
15.00%
|
| Additional Fund Statistics [Text Block] |
Key Fund Statistics
| Net Assets |
$479,698,986 |
| Number of Investments |
370 |
| Portfolio Turnover Rate |
15% |
|
| Holdings [Text Block] |
Fund Holdings Top Sectors
(% of Net Assets)
|
| C000034364 [Member] |
|
| Shareholder Report [Line Items] |
|
| Fund Name |
Federated Hermes Municipal High Yield Advantage Fund
|
| Class Name |
Class F Shares
|
| Trading Symbol |
FHTFX
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about the Federated Hermes Municipal High Yield Advantage Fund (the “Fund”) for the period of September 1, 2024 to February 28, 2025.
|
| Shareholder Report Annual or Semi-Annual |
semi-annual shareholder report
|
| Additional Information [Text Block] |
You can find additional information about the Fund 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 |
$45 |
0.89% |
|
| Expenses Paid, Amount |
$ 45
|
| Expense Ratio, Percent |
0.89%
|
| Net Assets |
$ 479,698,986
|
| Holdings Count | Holding |
370
|
| Investment Company Portfolio Turnover |
15.00%
|
| Additional Fund Statistics [Text Block] |
Key Fund Statistics
| Net Assets |
$479,698,986 |
| Number of Investments |
370 |
| Portfolio Turnover Rate |
15% |
|
| Holdings [Text Block] |
Fund Holdings Top Sectors
(% of Net Assets)
|
| C000130166 [Member] |
|
| Shareholder Report [Line Items] |
|
| Fund Name |
Federated Hermes Municipal High Yield Advantage Fund
|
| Class Name |
Institutional Shares
|
| Trading Symbol |
FMYIX
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about the Federated Hermes Municipal High Yield Advantage Fund (the “Fund”) for the period of September 1, 2024 to February 28, 2025.
|
| Shareholder Report Annual or Semi-Annual |
semi-annual shareholder report
|
| Additional Information [Text Block] |
You can find additional information about the Fund 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 |
$32 |
0.64% |
|
| Expenses Paid, Amount |
$ 32
|
| Expense Ratio, Percent |
0.64%
|
| Net Assets |
$ 479,698,986
|
| Holdings Count | Holding |
370
|
| Investment Company Portfolio Turnover |
15.00%
|
| Additional Fund Statistics [Text Block] |
Key Fund Statistics
| Net Assets |
$479,698,986 |
| Number of Investments |
370 |
| Portfolio Turnover Rate |
15% |
|
| Holdings [Text Block] |
Fund Holdings Top Sectors
(% of Net Assets)
|
