v3.26.1
S000068768 [Member] Annual Fund Operating Expenses - iShares 0-3 Month Treasury Bond ETF - iShares 0-3 Month Treasury Bond ETF
Feb. 28, 2026
 [1]
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.09%
Other Expenses (as a percentage of Assets): 0.00%
Expenses (as a percentage of Assets) 0.09%
[1] Operating expenses paid by BFA under the Investment Advisory Agreement exclude Acquired Fund Fees and Expenses, if any.