S000004433 [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 Small Cap Extended Market Index (Spliced) (Returns do not reflect deductions for fees, expenses or taxes)

Prospectus [Line Items]

Average Annual Return, Percent

^[1]

11.86%

7.14%

8.91%

iShares Morningstar Small-Cap ETF

Prospectus [Line Items]

Average Annual Return, Percent

11.93%

7.24%

8.88%

Performance Inception Date

Jun. 28, 2004

iShares Morningstar Small-Cap ETF | After Taxes on Distributions

Prospectus [Line Items]

Average Annual Return, Percent

11.49%

6.81%

8.43%

iShares Morningstar Small-Cap ETF | After Taxes on Distributions and Sales

Prospectus [Line Items]

Average Annual Return, Percent

7.26%

5.57%

7.12%

[1]	The Morningstar US Small Cap Extended Market Index (Spliced) reflects the performance of the Morningstar US Small Core Index through March 21, 2021 and the Morningstar US Small Cap Extended Market Index thereafter, which reflect the times when each index was the Underlying Index of the Fund.