| Form N-CSR Cover | 6 Months Ended |
| Dec. 31, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSRS |
| Amendment Flag | false |
| Registrant Name | Federated Hermes ETF Trust |
| Entity Central Index Key | 0001849998 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Dec. 31, 2024 |
| Shareholder Report | 6 Months Ended |
| Dec. 31, 2024 USD ($) Holding | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSRS |
| Amendment Flag | false |
| Registrant Name | Federated Hermes ETF Trust |
| Entity Central Index Key | 0001849998 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Dec. 31, 2024 |
| C000246534 | |
| Shareholder Report [Line Items] | |
| Fund Name | Federated Hermes Total Return Bond ETF |
| Trading Symbol | FTRB |
| Security Exchange Name | NYSEArca |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Federated Hermes Total Return Bond ETF (the "Fund") for the period of July 1, 2024 to December 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Semi-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 six months? (based on a hypothetical $10,000 investment) Fund Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Federated Hermes Total Return Bond ETF $19 0.37% |
| Expenses Paid, Amount | $ 19 |
| Expense Ratio, Percent | 0.37% |
| AssetsNet | $ 224,734,457 |
| Holdings Count | Holding | 418 |
| InvestmentCompanyPortfolioTurnover | 52% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net Assets $224,734,457 Number of Investments 418 Portfolio Turnover 52% |
| Holdings [Text Block] | Top Security Types (% of Net Assets) Footnote Reference * Value Value High Yield Bond Core Fund 2.5% Collaterized Mortgage Obligations 2.6% Cash Equivalents 3.0% Emerging Markets Core Fund 3.0% Asset-Backed Securities 3.7% Project and Trade Finance Core Fund 4.6% Exchange-Traded Funds 9.9% Mortgage-Backed Securities 21.3% U.S Treasury Securities 24.4% Corporate Bonds 24.8% 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] |
| Shareholder Report, Holdings (Details) - C000246534 | Dec. 31, 2024 |
| High Yield Bond Core Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| Collaterized Mortgage Obligations | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| Cash Equivalents | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| Emerging Markets Core Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| Asset-Backed Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.70% |
| Project and Trade Finance Core Fund | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| Exchange-Traded Funds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.90% |
| Mortgage-Backed Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.30% |
| U.S Treasury Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 24.40% |
| Corporate Bonds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 24.80% |
