v3.25.1
Shareholder Report
 6 Months Ended
Feb. 28, 2025
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSR
Amendment Flag false
Registrant Name Federated Hermes Adviser Series
Entity Central Index Key 0001707560
Entity Investment Company Type N-1A
Document Period End Date Feb. 28, 2025
C000224642  
Shareholder Report [Line Items]  
Fund Name Federated Hermes Conservative Microshort Fund
Class Name Class A Shares
Trading Symbol FHCBX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Federated Hermes Conservative Microshort 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 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
$14Footnote Reference1
0.40%
FootnoteDescription
Footnote1
Based on operations for the period from October 29, 2024 to February 28, 2025. Expenses for the full year would be higher.
Expenses Paid, Amount $ 14
Expense Ratio, Percent 0.40%
Expenses Short Period Footnote [Text Block] Based on operations for the period from October 29, 2024 to February 28, 2025. Expenses for the full year would be higher.
AssetsNet $ 184,214,251
Holdings Count | Holding 77
InvestmentCompanyPortfolioTurnover 15.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

  • Net Assets$184,214,251
  • Number of Investments77
  • Portfolio Turnover15%
Holdings [Text Block]

Top Security Types (% of Net Assets)

Group By Sector Chart
Value
Value
Commercial Paper
11.4%
Other Repurchase Agreements
22.4%
Corporate Bonds
28.7%
Asset-Backed Securities
36.6%
Material Fund Change [Text Block]
C000224641  
Shareholder Report [Line Items]  
Fund Name Federated Hermes Conservative Microshort Fund
Class Name Institutional Shares
Trading Symbol FHCOX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Federated Hermes Conservative Microshort 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 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
$13
0.25%
Expenses Paid, Amount $ 13
Expense Ratio, Percent 0.25%
AssetsNet $ 184,214,251
Holdings Count | Holding 77
InvestmentCompanyPortfolioTurnover 15.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

  • Net Assets$184,214,251
  • Number of Investments77
  • Portfolio Turnover15%
Holdings [Text Block]

Top Security Types (% of Net Assets)

Group By Sector Chart
Value
Value
Commercial Paper
11.4%
Other Repurchase Agreements
22.4%
Corporate Bonds
28.7%
Asset-Backed Securities
36.6%
Material Fund Change [Text Block]
C000224644  
Shareholder Report [Line Items]  
Fund Name Federated Hermes Conservative Municipal Microshort Fund
Class Name Class A Shares
Trading Symbol FHMAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Federated Hermes Conservative Municipal Microshort 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 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
$14Footnote Reference1
0.40%
FootnoteDescription
Footnote1
Based on operations for the period from October 29, 2024 to February 28, 2025. Expenses for the full year would be higher.
Expenses Paid, Amount $ 14
Expense Ratio, Percent 0.40%
Expenses Short Period Footnote [Text Block] Based on operations for the period from October 29, 2024 to February 28, 2025. Expenses for the full year would be higher.
AssetsNet $ 328,109,788
Holdings Count | Holding 117
InvestmentCompanyPortfolioTurnover 21.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

  • Net Assets$328,109,788
  • Number of Investments117
  • Portfolio Turnover21%
Holdings [Text Block]

Top Sectors (% of Net Assets)

Group By Sector Chart
Value
Value
Port
0.3%
General Obligation-Local (Appropriation)
0.4%
Senior Care
0.6%
Higher Education
0.6%
Water & Sewer
1.5%
Hospital
3.8%
Airport
5.0%
Electric & Gas
7.0%
Industrial Development/Pollution Control
17.3%
Multi-Family Housing
18.0%
General Obligation-Local
23.7%

Effective Maturity Schedule (% of Net Assets)

Group By Maturity Chart
Value
Value
181 Days or more
15.5%
91-180 Days
14.4%
31-90 Days
15.3%
8-30 Days
2.6%
1-7 Days
52.3%
Material Fund Change [Text Block]
C000224643  
Shareholder Report [Line Items]  
Fund Name Federated Hermes Conservative Municipal Microshort Fund
Class Name Institutional Shares
Trading Symbol FHMIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the Federated Hermes Conservative Municipal Microshort 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 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
$12
0.25%
Expenses Paid, Amount $ 12
Expense Ratio, Percent 0.25%
AssetsNet $ 328,109,788
Holdings Count | Holding 117
InvestmentCompanyPortfolioTurnover 21.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

  • Net Assets$328,109,788
  • Number of Investments117
  • Portfolio Turnover21%
Holdings [Text Block]

Top Sectors (% of Net Assets)

Group By Sector Chart
Value
Value
Port
0.3%
General Obligation-Local (Appropriation)
0.4%
Senior Care
0.6%
Higher Education
0.6%
Water & Sewer
1.5%
Hospital
3.8%
Airport
5.0%
Electric & Gas
7.0%
Industrial Development/Pollution Control
17.3%
Multi-Family Housing
18.0%
General Obligation-Local
23.7%

Effective Maturity Schedule (% of Net Assets)

Group By Maturity Chart
Value
Value
181 Days or more
15.5%
91-180 Days
14.4%
31-90 Days
15.3%
8-30 Days
2.6%
1-7 Days
52.3%
Material Fund Change [Text Block]