Class K [Member] Investment Objectives and Goals - Class K - BLACKROCK LARGE CAP FOCUS GROWTH FUND, INC. |
May 31, 2026 |
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| Prospectus [Line Items] | |
| Risk/Return [Heading] | Fund OverviewKey Facts About BlackRock Large Cap Focus Growth Fund, Inc. |
| Objective [Heading] | Investment Objective |
| Objective, Primary [Text Block] | The investment objective of the BlackRock Large Cap Focus Growth Fund, Inc. (the “Fund”) is long-term capital appreciation.
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