v3.26.1
S000004367 [Member] Average Annual Total Returns
 12 Months Ended 60 Months Ended 120 Months Ended 258 Months Ended
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Morningstar US Market Index (Returns do not reflect deductions for fees, expenses or taxes)        
Prospectus [Line Items]        
Average Annual Return, Percent 17.35% 13.29% 14.40%  
Morningstar US Large-Mid Cap Market Index (Spliced) (Returns do not reflect deductions for fees, expenses or taxes)        
Prospectus [Line Items]        
Average Annual Return, Percent [1] 17.71% 13.27% 14.27%  
iShares Morningstar U.S. Equity ETF        
Prospectus [Line Items]        
Average Annual Return, Percent 17.65% 13.24% 14.13%  
Performance Inception Date       Jun. 28, 2004
iShares Morningstar U.S. Equity ETF | After Taxes on Distributions        
Prospectus [Line Items]        
Average Annual Return, Percent 17.30% 12.86% 13.67%  
iShares Morningstar U.S. Equity ETF | After Taxes on Distributions and Sales        
Prospectus [Line Items]        
Average Annual Return, Percent 10.64% 10.51% 11.75%  
[1] The Morningstar US Large-Mid Cap Market Index (Spliced) reflects the performance of the Morningstar US Large Core Index through March 21, 2021 and the Morningstar US Large-Mid Cap Market Index thereafter, which reflect the times when each index was the Underlying Index of the Fund.