GraniteShares Autocallable SPCX ETF Underlying Asset Risk [Member] Derivatives Risk [Member] Autocallable Structure Risk [Member] Calculation Methodology Risk [Member] Distribution Risk [Member] NAV Erosion Risk Due to Distributions [Member] Option Market Liquidity Risk [Member] Laddered Portfolio Risk [Member] Concentration Risk [Member] ETF Risks [Member] High Portfolio Turnover Risk [Member] Inflation Risk [Member] Liquidity Risk [Member] Affiliated ETFs Risk [Member] Management Risk [Member] Money Market Instrument Risk [Member] New Fund Risk [Member] Non-Diversifiication Risk [Member] Operational Risk [Member] Recent Market Events Risk [Member] Single Issuer Risk [Member] Tax Risk [Member] Investing In U.S. Equities Risk [Member] U.S. Government and U.S. Agency Obligations Risk [Member] Fixed Income Securities Risk [Member] GraniteShares Autocallable SPCX ETF Fixed Income Securities Risk [Member] U.S. Government and U.S. Agency Obligations Risk [Member] Investing In U.S. Equities Risk [Member] Tax Risk [Member] Single Issuer Risk [Member] Recent Market Events Risk [Member] Operational Risk [Member] Non-Diversifiication Risk [Member] New Fund Risk [Member] Money Market Instrument Risk [Member] Management Risk [Member] Affiliated ETFs Risk [Member] Liquidity Risk [Member] Inflation Risk [Member] High Portfolio Turnover Risk [Member] ETF Risks [Member] Concentration Risk [Member] Laddered Portfolio Risk [Member] Option Market Liquidity Risk [Member] NAV Erosion Risk Due to Distributions [Member] Distribution Risk [Member] Calculation Methodology Risk [Member] Autocallable Structure Risk [Member] Derivatives Risk [Member] Underlying Asset Risk [Member] GraniteShares Autocallable SPCX ETF [Default Label]