Roundhill Generative AI & Technology ETF Equity Market Risk [Member] Artificial Intelligence Company Risk [Member] Technology Sector Risk [Member] Foreign Securities Risk [Member] Currency Exchange Rate Risk [Member] Depositary Receipt Risk [Member] Developed Markets Risk [Member] Emerging Markets Risk [Member] IPO Risk [Member] Market Capitalization Risk [Member] Large-Capitalization Investing [Member] Mid-Capitalization Investing [Member] Small-Capitalization Investing [Member] Micro-Capitalization Investing [Member] Concentration Risk [Member] ETF Risks [Member] Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk [Member] Costs of Buying or Selling Shares [Member] Shares May Trade at Prices Other Than NAV [Member] Trading [Member] Economic and Market Risk [Member] Management Risk [Member] Models and Data Risk [Member] Operational Risk [Member] Roundhill Generative AI & Technology ETF [Member] S&P 500 Total Return Index (reflects no deduction for fees, expenses, or taxes) Roundhill Generative AI & Technology ETF. Roundhill Generative AI & Technology ETF. Market Capitalization Risk. Operational Risk. Trading. Shares May Trade at Prices Other Than NAV. Costs of Buying or Selling Shares. Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk. ETF Risks. Large-Capitalization Investing. Mid-Capitalization Investing. Equity Market Risk. Artificial Intelligence Company Risk. Technology Sector Risk. Foreign Securities Risk. Currency Exchange Rate Risk. Depositary Receipt Risk. Management Risk. Developed Markets Risk. Emerging Markets Risk. Concentration Risk. Models and Data Risk. Micro-Capitalization Investing. Small-Capitalization Investing. Economic and Market Risk. IPO Risk. S&P 500 Total Return Index (reflects no deduction for fees, expenses, or taxes).