S000004331 [Member] Average Annual Total Returns

12 Months Ended

60 Months Ended

120 Months Ended

267 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 Transportation Select Industry FMC Capped Index (Spliced) (Returns do not reflect deductions for fees, expenses or taxes)

Prospectus [Line Items]

Average Annual Return, Percent

^[1]

11.89%

8.03%

10.21%

iShares U.S. Transportation ETF

Prospectus [Line Items]

Average Annual Return, Percent

11.49%

7.41%

9.53%

Performance Inception Date

Oct. 06, 2003

iShares U.S. Transportation ETF | After Taxes on Distributions

Prospectus [Line Items]

Average Annual Return, Percent

11.21%

7.12%

9.22%

iShares U.S. Transportation ETF | After Taxes on Distributions and Sales

Prospectus [Line Items]

Average Annual Return, Percent

6.98%

5.79%

7.77%

[1]

The S&P Transportation Select Industry FMC Capped Index (Spliced) reflects the performance of the Dow Jones Transportation Average Index through July 18, 2021 and the S&P Transportation Select Industry FMC Capped Index thereafter, which reflect the times when each index was the Underlying Index of the Fund.