v3.26.1
S000013695 [Member] Annual Fund Operating Expenses - iShares 3-7 Year Treasury Bond ETF - iShares 3-7 Year Treasury Bond ETF
Feb. 28, 2026
 [1]
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.15%
Other Expenses (as a percentage of Assets): 0.00%
Expenses (as a percentage of Assets) 0.15%
[1] Operating expenses paid by BFA under the Investment Advisory Agreement exclude acquired fund fees and expenses, if any.