Investor A C and Institutional [Member] Investment Objectives and Goals - Investor A, C and Institutional - BlackRock California Municipal Opportunities Fund |
May 31, 2025 |
|---|---|
| Prospectus [Line Items] | |
| Risk/Return [Heading] | Fund OverviewKey Facts About BlackRock California Municipal Opportunities Fund |
| Objective [Heading] | Investment Objective |
| Objective, Primary [Text Block] | The investment objective of BlackRock California Municipal Opportunities Fund (the “California Fund” or the “Fund”) is to provide shareholders with income exempt from Federal and California income taxes.
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