v3.26.1
S000068768 [Member] Average Annual Total Returns
12 Months Ended 60 Months Ended 67 Months Ended
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
ICE BofA US Broad Market Index (Returns do not reflect deductions for fees, expenses or taxes)      
Prospectus [Line Items]      
Average Annual Return, Percent 7.15% (0.42%) 0.04%
ICE 0-3 Month US Treasury Securities Index (Spliced) (Returns do not reflect deductions for fees, expenses or taxes)      
Prospectus [Line Items]      
Average Annual Return, Percent [1] 3.41% 2.54% 2.27%
iShares 0-3 Month Treasury Bond ETF      
Prospectus [Line Items]      
Average Annual Return, Percent 4.24% 3.23% 2.89%
Performance Inception Date     May 26, 2020
iShares 0-3 Month Treasury Bond ETF | After Taxes on Distributions      
Prospectus [Line Items]      
Average Annual Return, Percent 2.51% 1.93% 1.73%
iShares 0-3 Month Treasury Bond ETF | After Taxes on Distributions and Sales      
Prospectus [Line Items]      
Average Annual Return, Percent 2.49% 1.91% 1.71%
[1] The ICE 0-3 Month US Treasury Securities Index (Spliced) reflects the standard pricing variant of the ICE 0-3 Month US Treasury Securities Index through February 28, 2021; the 4 PM pricing variant of the ICE 0-3 Month US Treasury Securities Index from March 1, 2021 through November 30, 2023; and the standard pricing variant of the ICE 0-3 Month US Treasury Securities Index, which now utilizes pricing as of 4 PM, thereafter, which reflect the times when each index was the Underlying Index of the Fund.