Calamos S&P 500 Structured Alt Protection ETF - May Calamos S&P 500 Structured Alt Protection ETF - July Calamos Nasdaq-100 Structured Alt Protection ETF - June Calamos Russell 2000 Structured Alt Protection ETF - July Calamos S&P 500 Structured Alt Protection ETF - May Calamos S&P 500 Structured Alt Protection ETF - July Calamos Nasdaq-100 Structured Alt Protection ETF - June Calamos Russell 2000 Structured Alt Protection ETF - July Authorized Participant Concentration Risk [Member] Cap Change Risk [Member] Capital Protection Risk [Member] Capped Upside Risk [Member] Cash Holdings Risk [Member] Clearing Member Default Risk [Member] Correlation Risk [Member] Costs of Buying and Selling Fund Shares [Member] Derivatives Risk [Member] Equity Securities Risk [Member] FLEX Options Risk [Member] Investment Timing Risk [Member] Large-Capitalization Investing Risk [Member] Liquidity Risk [Member] Liquidity Risk — FLEX Options [Member] Market Maker Risk [Member] Market Risk [Member] New Fund Risk [Member] Options Risk [Member] Premium-Discount Risk [Member] Secondary Market Trading Risk [Member] Sector Risk [Member] Tax Risk [Member] Trading Issues Risk [Member] Underlying ETF Risk [Member] Valuation Risk [Member] Small-Capitalization Companies Risk [Member] S000084801 Member Cap Change Risk Member Cash Holdings Risk Member Premium Discount Risk Member Options Risk Member C000249281 Member Market Maker Risk Member Trading Issues Risk Member Tax Risk Member Sector Risk Member New Fund Risk Member Capped Upside Risk Member Capital Protection Risk Member S000085631 Member Underlying ETFRisk Member S000084800 Member C000250960 Member Clearing Member Default Risk Member Liquidity Risk Member FLEXOptions Risk Member Market Risk Member Large Capitalization Investing Risk Member Liquidity Risk FLEXOptions Member Small Capitalization Companies Risk Member Investment Timing Risk Member Correlation Risk Member Secondary Market Trading Risk Member Valuation Risk Member C000249282 Member C000249272 Member Derivatives Risk Member Equity Securities Risk Member Costs Of Buying And Selling Fund Shares Member S000084791 Member Authorized Participant Concentration Risk Member