v3.26.1
Investment Objectives and Goals - iShares Mortgage-Backed Securities Active ETF
Apr. 30, 2026
Prospectus [Line Items]  
Risk/Return [Heading] iSHARES MORTGAGE-BACKED SECURITIES ACTIVE ETF Ticker: MBBA      Stock Exchange: Cboe BZX
Objective [Heading] Investment Objective
Objective, Primary [Text Block]
The investment objective of iShares Mortgage-Backed Securities Active ETF (the “Fund”) is to seek to maximize total return, consistent with income generation and prudent investment management.