YieldMax® SPCX Option Income Strategy ETF Underlying Security Risks [Member] Indirect Investment in SPCX Risk [Member] SPCX Trading Risk [Member] SPCX Performance Risk [Member] Newly Public Company and Stock Volatility Risks [Member] Commercial Space Industry Risks [Member] Satellite Communications Industry Risks [Member] Industry Concentration Risk [Member] Business and Operational Risks [Member] Regulatory and Legal Risks [Member] Customer and Supplier Concentration Risks [Member] Elon Musk’s Influence on SpaceX Risk [Member] Derivatives Risk [Member] Options Contracts [Member] Counterparty Risk [Member] Price Participation Risk [Member] Distribution Risk [Member] NAV Erosion Risk Due to Distributions [Member] Call Strategy Risks [Member] ETF Risks [Member] Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk [Member] Cash Redemption Risk [Member] Costs of Buying or Selling Shares [Member] Management Risk [Member] Shares May Trade at Prices Other Than NAV [Member] Trading [Member] Economic and Market Risk [Member] High Portfolio Turnover Risk [Member] Inflation Risk [Member] Liquidity Risk [Member] Money Market Instrument Risk [Member] Operational Risk [Member] Single Issuer Risk [Member] Tax Risk [Member] U.S. Government and U.S. Agency Obligations Risk [Member] YieldMax® SPCX Option Income Strategy ETF [Member] YieldMax® SPCX Option Income Strategy ETF YieldMax® SPCX Option Income Strategy ETF U.S. Government and U.S. Agency Obligations Risk. Tax Risk. Single Issuer Risk. Operational Risk. Money Market Instrument Risk. Liquidity Risk. Inflation Risk. High Portfolio Turnover Risk. Economic and Market Risk. Trading. Shares May Trade at Prices Other Than NAV. Management Risk. Costs of Buying or Selling Shares. Cash Redemption Risk. Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk. ETF Risks. Call Strategy Risks. NAV Erosion Risk Due to Distributions. Distribution Risk. Price Participation Risk. Counterparty Risk. Options Contracts. Derivatives Risk. Elon Musk’s Influence on SpaceX Risk. Regulatory and Legal Risks. Industry Concentration Risk. Satellite Communications Industry Risks. Commercial Space Industry Risks. Newly Public Company and Stock Volatility Risks. SPCX Performance Risk. SPCX Trading Risk. Indirect Investment in SPCX Risk. Underlying Security Risks. Business and Operational Risks. Customer and Supplier Concentration Risks.