v3.26.1
S000075811 [Member] Average Annual Total Returns
 12 Months Ended 44 Months Ended
Dec. 31, 2025
Dec. 31, 2025
MSCI All Country World Index (Net) (Returns do not reflect deductions for fees, expenses or taxes except for withholding taxes on reinvested dividends)    
Prospectus [Line Items]    
Average Annual Return, Percent [1] 22.34% 13.83%
NYSE FactSet Global Blockchain Technologies Index (Net) (Returns do not reflect deductions for fees, expenses or taxes except for withholding taxes on reinvested dividends)    
Prospectus [Line Items]    
Average Annual Return, Percent [1] 27.88% 16.66%
iShares Blockchain and Tech ETF    
Prospectus [Line Items]    
Average Annual Return, Percent 27.78% 16.94%
Performance Inception Date   Apr. 25, 2022
iShares Blockchain and Tech ETF | After Taxes on Distributions    
Prospectus [Line Items]    
Average Annual Return, Percent 25.01% 15.72%
iShares Blockchain and Tech ETF | After Taxes on Distributions and Sales    
Prospectus [Line Items]    
Average Annual Return, Percent 16.73% 12.92%
[1] Returns for net indices generally assume the reinvestment of dividends after the deduction of the maximum withholding tax in each country applicable to non-residents of the country as determined by the index provider. Such indices use withholding tax rates that are often at a higher rate than the rates to which the Fund is subject in each country, including for countries where the Fund is not subject to withholding taxes. When this is the case, index performance will be lower than if the index used the Fund's applicable withholding tax rates, if any.