000000 - Document - Document and Entity Information {Elements} link:presentationLink link:calculationLink link:definitionLink 000021 - Disclosure - Risk/Return Detail Data {Elements} - iShares 20+ Year Treasury Bond BuyWrite Strategy ETF link:presentationLink link:calculationLink link:definitionLink 000021 - Schedule - Annual Fund Operating Expenses link:calculationLink link:presentationLink link:definitionLink 000041 - Disclosure - Risk/Return Detail Data {Elements} - iShares High Yield Corporate Bond BuyWrite Strategy ETF link:presentationLink link:calculationLink link:definitionLink 000061 - Disclosure - Risk/Return Detail Data {Elements} - iShares Investment Grade Corporate Bond BuyWrite Strategy ETF link:presentationLink link:calculationLink link:definitionLink 000081 - Disclosure - Risk/Return Detail Data {Elements} - iShares Russell 2000 BuyWrite ETF link:presentationLink link:calculationLink link:definitionLink 000101 - Disclosure - Risk/Return Detail Data {Elements} - iShares S&P 500 BuyWrite ETF link:presentationLink link:calculationLink link:definitionLink 000121 - Disclosure - Risk/Return Detail Data {Elements} - iShares Yield Optimized Bond ETF link:presentationLink link:calculationLink link:definitionLink 000141 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds 2025 Term High Yield and Income ETF link:presentationLink link:calculationLink link:definitionLink 000161 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds 2026 Term High Yield and Income ETF link:presentationLink link:calculationLink link:definitionLink 000181 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds 2027 Term High Yield and Income ETF link:presentationLink link:calculationLink link:definitionLink 000201 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds 2028 Term High Yield and Income ETF link:presentationLink link:calculationLink link:definitionLink 000221 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds 2029 Term High Yield and Income ETF link:presentationLink link:calculationLink link:definitionLink 000241 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds 2030 Term High Yield and Income ETF link:presentationLink link:calculationLink link:definitionLink 000261 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds 2031 Term High Yield and Income ETF link:presentationLink link:calculationLink link:definitionLink 000281 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds Dec 2025 Term Corporate ETF link:presentationLink link:calculationLink link:definitionLink 000301 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds Dec 2026 Term Corporate ETF link:presentationLink link:calculationLink link:definitionLink 000321 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds Dec 2027 Term Corporate ETF link:presentationLink link:calculationLink link:definitionLink 000341 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds Dec 2028 Term Corporate ETF link:presentationLink link:calculationLink link:definitionLink 000361 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds Dec 2029 Term Corporate ETF link:presentationLink link:calculationLink link:definitionLink 000381 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds Dec 2030 Term Corporate ETF link:presentationLink link:calculationLink link:definitionLink 000401 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds Dec 2031 Term Corporate ETF link:presentationLink link:calculationLink link:definitionLink 000421 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds Dec 2032 Term Corporate ETF link:presentationLink link:calculationLink link:definitionLink 000441 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds Dec 2033 Term Corporate ETF link:presentationLink link:calculationLink link:definitionLink 000461 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds Dec 2034 Term Corporate ETF link:presentationLink link:calculationLink link:definitionLink 000481 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds 1-5 Year Corporate Ladder ETF link:presentationLink link:calculationLink link:definitionLink 000501 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds 1-5 Year High Yield and Income Ladder ETF link:presentationLink link:calculationLink link:definitionLink 000521 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds 1-5 Year TIPS Ladder ETF link:presentationLink link:calculationLink link:definitionLink 000541 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds 1-5 Year Treasury Ladder ETF link:presentationLink link:calculationLink link:definitionLink 000561 - Disclosure - Risk/Return Detail Data {Elements} - iShares 0-5 Year High Yield Corporate Bond ETF link:presentationLink link:calculationLink link:definitionLink 000581 - Disclosure - Risk/Return Detail Data {Elements} - iShares 0-5 Year Investment Grade Corporate Bond ETF link:presentationLink link:calculationLink link:definitionLink 000601 - Disclosure - Risk/Return Detail Data {Elements} - iShares Aaa - A Rated Corporate Bond ETF link:presentationLink link:calculationLink link:definitionLink 000621 - Disclosure - Risk/Return Detail Data {Elements} - iShares BB Rated Corporate Bond ETF link:presentationLink link:calculationLink link:definitionLink 000641 - Disclosure - Risk/Return Detail Data {Elements} - iShares Broad USD High Yield Corporate Bond ETF link:presentationLink link:calculationLink link:definitionLink 000661 - Disclosure - Risk/Return Detail Data {Elements} - iShares CMBS ETF link:presentationLink link:calculationLink link:definitionLink 000681 - Disclosure - Risk/Return Detail Data {Elements} - iShares Convertible Bond ETF link:presentationLink link:calculationLink link:definitionLink 000701 - Disclosure - Risk/Return Detail Data {Elements} - iShares ESG Advanced High Yield Corporate Bond ETF link:presentationLink link:calculationLink link:definitionLink 000721 - Disclosure - Risk/Return Detail Data {Elements} - iShares Fallen Angels USD Bond ETF link:presentationLink link:calculationLink link:definitionLink 000741 - Disclosure - Risk/Return Detail Data {Elements} - iShares GNMA Bond ETF link:presentationLink link:calculationLink link:definitionLink 000761 - Disclosure - Risk/Return Detail Data {Elements} - iShares 1-3 Year International Treasury Bond ETF link:presentationLink link:calculationLink link:definitionLink 000781 - Disclosure - Risk/Return Detail Data {Elements} - iShares Core 1-5 Year USD Bond ETF link:presentationLink link:calculationLink link:definitionLink 000801 - Disclosure - Risk/Return Detail Data {Elements} - iShares Core International Aggregate Bond ETF link:presentationLink link:calculationLink link:definitionLink 000821 - Disclosure - Risk/Return Detail Data {Elements} - iShares Core Total USD Bond Market ETF link:presentationLink link:calculationLink link:definitionLink 000841 - Disclosure - Risk/Return Detail Data {Elements} - iShares Floating Rate Bond ETF link:presentationLink link:calculationLink link:definitionLink 000861 - Disclosure - Risk/Return Detail Data {Elements} - iShares International Treasury Bond ETF link:presentationLink link:calculationLink link:definitionLink 000881 - Disclosure - Risk/Return Detail Data {Elements} - iShares J.P. Morgan Broad USD Emerging Markets Bond ETF link:presentationLink link:calculationLink link:definitionLink 000901 - Disclosure - Risk/Return Detail Data {Elements} - iShares J.P. Morgan USD Emerging Markets Bond ETF link:presentationLink link:calculationLink link:definitionLink 000921 - Disclosure - Risk/Return Detail Data {Elements} - iSHARES U.S. FIXED INCOME BALANCED RISK SYSTEMATIC ETF link:presentationLink link:calculationLink link:definitionLink 000941 - Disclosure - Risk/Return Detail Data {Elements} - iShares USD Green Bond ETF link:presentationLink link:calculationLink link:definitionLink 000961 - Disclosure - Risk/Return Detail Data {Elements} - iShares 0-5 Year TIPS Bond ETF link:presentationLink link:calculationLink link:definitionLink 000981 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds Dec 2025 Term Muni Bond ETF link:presentationLink link:calculationLink link:definitionLink 001001 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds Dec 2026 Term Muni Bond ETF link:presentationLink link:calculationLink link:definitionLink 001021 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds Dec 2027 Term Muni Bond ETF link:presentationLink link:calculationLink link:definitionLink 001041 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds Dec 2028 Term Muni Bond ETF link:presentationLink link:calculationLink link:definitionLink 001061 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds Dec 2029 Term Muni Bond ETF link:presentationLink link:calculationLink link:definitionLink 001081 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds Dec 2030 Term Muni Bond ETF link:presentationLink link:calculationLink link:definitionLink 001101 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds Oct 2025 Term TIPS ETF link:presentationLink link:calculationLink link:definitionLink 001121 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds Oct 2026 Term TIPS ETF link:presentationLink link:calculationLink link:definitionLink 001141 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds Oct 2027 Term TIPS ETF link:presentationLink link:calculationLink link:definitionLink 001161 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds Oct 2028 Term TIPS ETF link:presentationLink link:calculationLink link:definitionLink 001181 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds Oct 2029 Term TIPS ETF link:presentationLink link:calculationLink link:definitionLink 001201 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds Oct 2030 Term TIPS ETF link:presentationLink link:calculationLink link:definitionLink 001221 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds Oct 2031 Term TIPS ETF link:presentationLink link:calculationLink link:definitionLink 001241 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds Oct 2032 Term TIPS ETF link:presentationLink link:calculationLink link:definitionLink 001261 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds Oct 2033 Term TIPS ETF link:presentationLink link:calculationLink link:definitionLink 001281 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds Oct 2034 Term TIPS ETF link:presentationLink link:calculationLink link:definitionLink 001301 - Disclosure - Risk/Return Detail Data {Elements} - iShares TIPS Bond ETF link:presentationLink link:calculationLink link:definitionLink 001321 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds Dec 2025 Term Treasury ETF link:presentationLink link:calculationLink link:definitionLink 001341 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds Dec 2026 Term Treasury ETF link:presentationLink link:calculationLink link:definitionLink 001361 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds Dec 2027 Term Treasury ETF link:presentationLink link:calculationLink link:definitionLink 001381 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds Dec 2028 Term Treasury ETF link:presentationLink link:calculationLink link:definitionLink 001401 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds Dec 2029 Term Treasury ETF link:presentationLink link:calculationLink link:definitionLink 001421 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds Dec 2030 Term Treasury ETF link:presentationLink link:calculationLink link:definitionLink 001441 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds Dec 2031 Term Treasury ETF link:presentationLink link:calculationLink link:definitionLink 001461 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds Dec 2032 Term Treasury ETF link:presentationLink link:calculationLink link:definitionLink 001481 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds Dec 2033 Term Treasury ETF link:presentationLink link:calculationLink link:definitionLink 001501 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds Dec 2034 Term Treasury ETF link:presentationLink link:calculationLink link:definitionLink 001521 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds Dec 2044 Term Treasury ETF link:presentationLink link:calculationLink link:definitionLink 001541 - Disclosure - Risk/Return Detail Data {Elements} - iShares iBonds Dec 2054 Term Treasury ETF link:presentationLink link:calculationLink link:definitionLink 001561 - Disclosure - Risk/Return Detail Data {Elements} - iShares Treasury Floating Rate Bond ETF link:presentationLink link:calculationLink link:definitionLink 001581 - Disclosure - Risk/Return Detail Data {Elements} - iShares U.S. Treasury Bond ETF link:presentationLink link:calculationLink link:definitionLink