v3.26.1
S000023507 [Member] Investment Objectives and Goals - iShares Short-Term National Muni Bond ETF
Feb. 28, 2026
Prospectus [Line Items]  
Risk/Return [Heading] iSHARES® SHORT-TERM NATIONAL MUNI BOND ETF SUB | NYSE Arca
Objective [Heading] Investment Objective
Objective, Primary [Text Block]
The iShares Short-Term National Muni Bond ETF (the Fund) seeks to track the investment results of an index composed of investment-grade U.S. municipal bonds with remaining maturities between one month and five years.