v3.26.1
S000004369 [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 Broad Value Index (Spliced) (Returns do not reflect deductions for fees, expenses or taxes)        
Prospectus [Line Items]        
Average Annual Return, Percent [1] 18.83% 13.42% 11.69%  
iShares Morningstar Value ETF        
Prospectus [Line Items]        
Average Annual Return, Percent 18.78% 13.38% 11.52%  
Performance Inception Date       Jun. 28, 2004
iShares Morningstar Value ETF | After Taxes on Distributions        
Prospectus [Line Items]        
Average Annual Return, Percent 18.23% 12.78% 10.84%  
iShares Morningstar Value ETF | After Taxes on Distributions and Sales        
Prospectus [Line Items]        
Average Annual Return, Percent 11.43% 10.58% 9.35%  
[1] The Morningstar US Large-Mid Cap Broad Value Index (Spliced) reflects the performance of the Morningstar US Large Value Index through March 21, 2021 and the Morningstar US Large-Mid Cap Broad Value Index thereafter, which reflect the times when each index was the Underlying Index of the Fund.