Shareholder Report
|
6 Months Ended |
|
Apr. 30, 2026
USD ($)
Holding
|
|---|
| Shareholder Report [Line Items] |
|
| Document Type |
N-CSRS
|
| Amendment Flag |
false
|
| Registrant Name |
Federated Hermes Adviser Series
|
| Entity Central Index Key |
0001707560
|
| Entity Investment Company Type |
N-1A
|
| Document Period End Date |
Apr. 30, 2026
|
| C000191479 [Member] |
|
| Shareholder Report [Line Items] |
|
| Fund Name |
Federated Hermes MDT Large Cap Value Fund
|
| Class Name |
Class R6 Shares
|
| Trading Symbol |
FSTLX
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about the Federated Hermes MDT Large Cap Value Fund (the “Fund”) for the period of November 1, 2025 to April 30, 2026.
|
| 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 an annualized percentage of a $10,000 investment |
| Class R6 Shares |
$37 |
0.70% |
|
| Expenses Paid, Amount |
$ 37
|
| Expense Ratio, Percent |
0.70%
|
| Net Assets |
$ 2,347,689,560
|
| Holdings Count | Holding |
126
|
| Investment Company Portfolio Turnover |
32.00%
|
| Additional Fund Statistics [Text Block] |
Key Fund Statistics
| Net Assets |
$2,347,689,560 |
| Number of Investments |
126 |
| Portfolio Turnover |
32% |
|
| Holdings [Text Block] |
Fund Holdings Top Sectors
(% of Net Assets)
|
| C000191482 [Member] |
|
| Shareholder Report [Line Items] |
|
| Fund Name |
Federated Hermes MDT Large Cap Value Fund
|
| Class Name |
Service Shares
|
| Trading Symbol |
FSTKX
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about the Federated Hermes MDT Large Cap Value Fund (the “Fund”) for the period of November 1, 2025 to April 30, 2026.
|
| 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 an annualized percentage of a $10,000 investment |
| Service Shares |
$52 |
0.99% |
|
| Expenses Paid, Amount |
$ 52
|
| Expense Ratio, Percent |
0.99%
|
| Net Assets |
$ 2,347,689,560
|
| Holdings Count | Holding |
126
|
| Investment Company Portfolio Turnover |
32.00%
|
| Additional Fund Statistics [Text Block] |
Key Fund Statistics
| Net Assets |
$2,347,689,560 |
| Number of Investments |
126 |
| Portfolio Turnover |
32% |
|
| Holdings [Text Block] |
Fund Holdings Top Sectors
(% of Net Assets)
|
| C000191481 [Member] |
|
| Shareholder Report [Line Items] |
|
| Fund Name |
Federated Hermes MDT Large Cap Value Fund
|
| Class Name |
Institutional Shares
|
| Trading Symbol |
FMSTX
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about the Federated Hermes MDT Large Cap Value Fund (the “Fund”) for the period of November 1, 2025 to April 30, 2026.
|
| 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 an annualized percentage of a $10,000 investment |
| Institutional Shares |
$41 |
0.77% |
|
| Expenses Paid, Amount |
$ 41
|
| Expense Ratio, Percent |
0.77%
|
| Net Assets |
$ 2,347,689,560
|
| Holdings Count | Holding |
126
|
| Investment Company Portfolio Turnover |
32.00%
|
| Additional Fund Statistics [Text Block] |
Key Fund Statistics
| Net Assets |
$2,347,689,560 |
| Number of Investments |
126 |
| Portfolio Turnover |
32% |
|
| Holdings [Text Block] |
Fund Holdings Top Sectors
(% of Net Assets)
|
| C000191478 [Member] |
|
| Shareholder Report [Line Items] |
|
| Fund Name |
Federated Hermes MDT Large Cap Value Fund
|
| Class Name |
Class R Shares
|
| Trading Symbol |
QRLVX
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about the Federated Hermes MDT Large Cap Value Fund (the “Fund”) for the period of November 1, 2025 to April 30, 2026.
|
| 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 an annualized percentage of a $10,000 investment |
| Class R Shares |
$76 |
1.44% |
|
| Expenses Paid, Amount |
$ 76
|
| Expense Ratio, Percent |
1.44%
|
| Net Assets |
$ 2,347,689,560
|
| Holdings Count | Holding |
126
|
| Investment Company Portfolio Turnover |
32.00%
|
| Additional Fund Statistics [Text Block] |
Key Fund Statistics
| Net Assets |
$2,347,689,560 |
| Number of Investments |
126 |
| Portfolio Turnover |
32% |
|
| Holdings [Text Block] |
Fund Holdings Top Sectors
(% of Net Assets)
|
| C000191477 [Member] |
|
| Shareholder Report [Line Items] |
|
| Fund Name |
Federated Hermes MDT Large Cap Value Fund
|
| Class Name |
Class C Shares
|
| Trading Symbol |
QCLVX
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about the Federated Hermes MDT Large Cap Value Fund (the “Fund”) for the period of November 1, 2025 to April 30, 2026.
|
| 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 an annualized percentage of a $10,000 investment |
| Class C Shares |
$93 |
1.76% |
|
| Expenses Paid, Amount |
$ 93
|
| Expense Ratio, Percent |
1.76%
|
| Net Assets |
$ 2,347,689,560
|
| Holdings Count | Holding |
126
|
| Investment Company Portfolio Turnover |
32.00%
|
| Additional Fund Statistics [Text Block] |
Key Fund Statistics
| Net Assets |
$2,347,689,560 |
| Number of Investments |
126 |
| Portfolio Turnover |
32% |
|
| Holdings [Text Block] |
Fund Holdings Top Sectors
(% of Net Assets)
|
| C000191475 [Member] |
|
| Shareholder Report [Line Items] |
|
| Fund Name |
Federated Hermes MDT Large Cap Value Fund
|
| Class Name |
Class A Shares
|
| Trading Symbol |
FSTRX
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about the Federated Hermes MDT Large Cap Value Fund (the “Fund”) for the period of November 1, 2025 to April 30, 2026.
|
| 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 an annualized percentage of a $10,000 investment |
| Class A Shares |
$52 |
0.99% |
|
| Expenses Paid, Amount |
$ 52
|
| Expense Ratio, Percent |
0.99%
|
| Net Assets |
$ 2,347,689,560
|
| Holdings Count | Holding |
126
|
| Investment Company Portfolio Turnover |
32.00%
|
| Additional Fund Statistics [Text Block] |
Key Fund Statistics
| Net Assets |
$2,347,689,560 |
| Number of Investments |
126 |
| Portfolio Turnover |
32% |
|
| Holdings [Text Block] |
Fund Holdings Top Sectors
(% of Net Assets)
|
| C000205626 [Member] |
|
| Shareholder Report [Line Items] |
|
| Fund Name |
Federated Hermes SDG Engagement Equity Fund
|
| Class Name |
Class A Shares
|
| Trading Symbol |
FHEQX
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about the Federated Hermes SDG Engagement Equity Fund (the “Fund”) for the period of November 1, 2025 to April 30, 2026.
|
| 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 an annualized percentage of a $10,000 investment |
| Class A Shares |
$61 |
1.19% |
|
| Expenses Paid, Amount |
$ 61
|
| Expense Ratio, Percent |
1.19%
|
| Net Assets |
$ 88,928,454
|
| Holdings Count | Holding |
58
|
| Investment Company Portfolio Turnover |
25.00%
|
| Additional Fund Statistics [Text Block] |
Key Fund Statistics
| Net Assets |
$88,928,454 |
| Number of Investments |
58 |
| Portfolio Turnover |
25% |
|
| Holdings [Text Block] |
Fund Holdings Top Countries
(% of Net Assets) Top Sectors
(% of Net Assets)
|
| C000205625 [Member] |
|
| Shareholder Report [Line Items] |
|
| Fund Name |
Federated Hermes SDG Engagement Equity Fund
|
| Class Name |
Institutional Shares
|
| Trading Symbol |
FHESX
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about the Federated Hermes SDG Engagement Equity Fund (the “Fund”) for the period of November 1, 2025 to April 30, 2026.
|
| 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 an annualized percentage of a $10,000 investment |
| Institutional Shares |
$48 |
0.94% |
|
| Expenses Paid, Amount |
$ 48
|
| Expense Ratio, Percent |
0.94%
|
| Net Assets |
$ 88,928,454
|
| Holdings Count | Holding |
58
|
| Investment Company Portfolio Turnover |
25.00%
|
| Additional Fund Statistics [Text Block] |
Key Fund Statistics
| Net Assets |
$88,928,454 |
| Number of Investments |
58 |
| Portfolio Turnover |
25% |
|
| Holdings [Text Block] |
Fund Holdings Top Countries
(% of Net Assets) Top Sectors
(% of Net Assets)
|
| C000205628 [Member] |
|
| Shareholder Report [Line Items] |
|
| Fund Name |
Federated Hermes SDG Engagement Equity Fund
|
| Class Name |
Class R6 Shares
|
| Trading Symbol |
FHERX
|
| Annual or Semi-Annual Statement [Text Block] |
This semi-annual shareholder report contains important information about the Federated Hermes SDG Engagement Equity Fund (the “Fund”) for the period of November 1, 2025 to April 30, 2026.
|
| 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 an annualized percentage of a $10,000 investment |
| Class R6 Shares |
$46 |
0.89% |
|
| Expenses Paid, Amount |
$ 46
|
| Expense Ratio, Percent |
0.89%
|
| Net Assets |
$ 88,928,454
|
| Holdings Count | Holding |
58
|
| Investment Company Portfolio Turnover |
25.00%
|
| Additional Fund Statistics [Text Block] |
Key Fund Statistics
| Net Assets |
$88,928,454 |
| Number of Investments |
58 |
| Portfolio Turnover |
25% |
|
| Holdings [Text Block] |
Fund Holdings Top Countries
(% of Net Assets) Top Sectors
(% of Net Assets)
|
