S000004371 [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 Mid Cap Market Index (Spliced) (Returns do not reflect deductions for fees, expenses or taxes)

Prospectus [Line Items]

Average Annual Return, Percent

^[1]

10.12%

8.77%

10.56%

iShares Morningstar Mid-Cap ETF

Prospectus [Line Items]

Average Annual Return, Percent

10.12%

8.74%

10.40%

Performance Inception Date

Jun. 28, 2004

iShares Morningstar Mid-Cap ETF | After Taxes on Distributions

Prospectus [Line Items]

Average Annual Return, Percent

9.72%

8.33%

9.97%

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

Prospectus [Line Items]

Average Annual Return, Percent

6.23%

6.82%

8.47%

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