v3.26.1
S000004340 [Member] Average Annual Total Returns
 12 Months Ended 60 Months Ended 120 Months Ended 305 Months Ended
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
S&P Total Market Index (Returns do not reflect deductions for fees, expenses or taxes)        
Prospectus [Line Items]        
Average Annual Return, Percent 17.05% 13.07% 14.22%  
S&P 900 Growth Index (Spliced) (Returns do not reflect deductions for fees, expenses or taxes)        
Prospectus [Line Items]        
Average Annual Return, Percent [1] 21.36% 14.60% 16.61%  
iShares Core S&P U.S. Growth ETF        
Prospectus [Line Items]        
Average Annual Return, Percent 21.31% 14.55% 16.55%  
Performance Inception Date       Jul. 24, 2000
iShares Core S&P U.S. Growth ETF | After Taxes on Distributions        
Prospectus [Line Items]        
Average Annual Return, Percent 21.13% 14.33% 16.24%  
iShares Core S&P U.S. Growth ETF | After Taxes on Distributions and Sales        
Prospectus [Line Items]        
Average Annual Return, Percent 12.71% 11.65% 14.00%  
[1] The S&P 900 Growth Index (Spliced) reflects the performance of the Russell 3000 Growth Index through January 22, 2017 and the S&P 900 Growth Index thereafter, which reflect the times when each index was the Underlying Index of the Fund.