Investment Objectives and Goals - BlackRock U.S. Mortgage Portfolio |
Apr. 30, 2025 |
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| Prospectus [Line Items] | |
| Risk/Return [Heading] | Fund OverviewKey Facts About BlackRock Securitized Income Fund |
| Objective [Heading] | Investment Objective |
| Objective, Primary [Text Block] | The investment objective of the BlackRock Securitized Income Fund (formerly, BlackRock U.S. Mortgage Portfolio) (the “Fund”) is to seek high total return.
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