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      id="h_5_741cbd75-92ac-dfc7-bf7f-b45f060fb4c6"
      unitRef="pure">0.2857</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="FY2020_S000002323Member_C000006079Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_6_3b3815f2-7280-9a4d-102a-c1abac61bfd1"
      unitRef="pure">0.1949</oef:AnnlRtrPct>
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      contextRef="FY2021_S000002323Member_C000006079Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_7_b2fa940d-3547-55d8-4c88-4711d7b1c585"
      unitRef="pure">0.1345</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="FY2022_S000002323Member_C000006079Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_8_4e6b6998-56fd-f656-dcc1-1c956ccbcd77"
      unitRef="pure">-0.1680</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="FY2023_S000002323Member_C000006079Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_9_8f2d076d-1ed6-c939-ca74-8d458555027b"
      unitRef="pure">0.1859</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="FY2022_S000002323Member_C000199765Member_ClassKMember"
      decimals="4"
      id="h_10_239fd134-5880-4e70-4f01-06f57fbfa38f"
      unitRef="pure">-0.1654</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
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      decimals="4"
      id="h_11_c56093c6-4295-08c7-1a6f-b728fe7f6d70"
      unitRef="pure">0.1897</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="FY2024_S000002323Member_C000199765Member_ClassKMember"
      decimals="4"
      id="h_12_7d44c0a8-3975-bd6d-21d0-f5f5436551a1"
      unitRef="pure">0.1220</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="FY2025_S000002323Member_C000199765Member_ClassKMember"
      decimals="4"
      id="h_13_8f6ca02f-7806-5769-8f56-5a7f10de7578"
      unitRef="pure">0.1131</oef:AnnlRtrPct>
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      contextRef="FY2016_S000002323Member_C000199765Member_ClassKMember"
      decimals="4"
      id="h_4_5c2e2597-439c-7b68-c9a9-4645535fa95f"
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      contextRef="FY2017_S000002323Member_C000199765Member_ClassKMember"
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      id="h_5_85f7920d-6353-5b7e-1482-65ce349d7e2c"
      unitRef="pure">0.0907</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
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      decimals="4"
      id="h_6_43bfa710-6973-873c-471d-3d22bb1d78c1"
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    <oef:AnnlRtrPct
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      id="h_7_a48be755-3f4e-8343-df2c-0398d7869f2d"
      unitRef="pure">0.2891</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="FY2020_S000002323Member_C000199765Member_ClassKMember"
      decimals="4"
      id="h_8_790b7378-fa45-e55d-4d47-fd084c05eccc"
      unitRef="pure">0.1983</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="FY2021_S000002323Member_C000199765Member_ClassKMember"
      decimals="4"
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    <dei:EntityInvCompanyType
      contextRef="DefaultContext"
      id="t_4_bdbd246a_ec1a_2362_4d43_ee56c1c79dc1">N-1A</dei:EntityInvCompanyType>
    <dei:EntityRegistrantName
      contextRef="DefaultContext"
      id="t_5_a72d5714_ae27_f8a3_cd7a_580dfb0ac0bf">BLACKROCK ADVANTAGE SMID CAP FUND, INC.</dei:EntityRegistrantName>
    <oef:ProspectusDate
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      id="h_03_2d262319_1908_4bad_93fe_c796a7933c29">2026-07-29</oef:ProspectusDate>
    <oef:RiskReturnHeading
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      id="t_12_7bb7d58d_ab2a_571c_8bcd_4234c4a7df96">Fund OverviewKey Facts About BlackRock Advantage SMID Cap Fund, Inc.</oef:RiskReturnHeading>
    <oef:ObjectiveHeading
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember"
      id="t_13_017540cb_8c50_17a6_5475_ce2acbe7a76c">Investment Objective</oef:ObjectiveHeading>
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      id="t_3_7c29b695_30d7_4598_b159_48933b8682f2"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The investment objective of BlackRock Advantage SMID Cap Fund, Inc. (the &#x201c;Fund&#x201d;) is to seek long-term capital &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;appreciation.&lt;/span&gt;&lt;/div&gt; </oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember"
      id="t_14_dd1dd438_1a7d_86b6_759c_85688eb225f0">Fees and Expenses of the Fund</oef:ExpenseHeading>
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      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember"
      id="t_16_dc79a3b7_6859_19ce_c298_bf6238e527dc"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;This table describes the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. Amounts in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;the table are rounded to the nearest basis point, which in some cases may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;0.00.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;You may pay other fees, such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;as brokerage commissions and other fees to your financial professional or your selected securities dealer, broker, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;investment adviser, service provider or industry professional (including BlackRock Advisors, LLC (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;BlackRock&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;) and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;its affiliates) (each, a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;Financial Intermediary&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;), which are not reflected in the table and example below.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; You may&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in the&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;fund complex advised by BlackRock or its affiliates. More information about these and other discounts is available &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;from your Financial Intermediary and in the &#x201c;Details About the Share Classes&#x201d; and the &#x201c;Intermediary-Defined Sales &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Charge Waiver Policies&#x201d; sections on pages &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;24&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;A-1&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;, respectively, of the Fund&#x2019;s prospectus and in the &#x201c;Purchase of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Shares&#x201d; section on page &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;II-97&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; of Part II of the Fund&#x2019;s Statement of Additional Information.&lt;/span&gt; &lt;br/&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt; </oef:ExpenseNarrativeTextBlock>
    <oef:ExpenseBreakpointDiscounts
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember"
      id="t_15_2d3349b5_dc81_660c_31fe_41bebf3033d7">You may&#160;qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in the&#160;fund complex advised by BlackRock or its affiliates.</oef:ExpenseBreakpointDiscounts>
    <oef:ExpenseBreakpointMinimumInvestmentRequiredAmount
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      decimals="INF"
      id="h_1_9670487f_8b92_431f_b346_80fbb815326c"
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    <oef:ShareholderFeesCaption
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember"
      id="t_6_9e972d71_912b_4cc6_a936_0619d59d26db">  Shareholder Fees  (fees paid directly from your investment)  </oef:ShareholderFeesCaption>
    <oef:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice
      contextRef="D20260331_20260331_S000002323Member_C000006079Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_2_982b4db2_4788_4939_ad5e_6d310d9ada98"
      unitRef="pure">0.0525</oef:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
    <oef:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice
      contextRef="D20260331_20260331_S000002323Member_C000006081Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_3_c9fc06ff_98b0_4299_9106_7e86afb1ce25"
      unitRef="pure">0</oef:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
    <oef:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice
      contextRef="D20260331_20260331_S000002323Member_C000006082Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_4_af613e0d_d15f_43b5_b6e8_720392ff343a"
      unitRef="pure">0</oef:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
    <oef:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice
      contextRef="D20260331_20260331_S000002323Member_C000006083Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_5_a42e726b_4d6b_4539_83d2_62068f887465"
      unitRef="pure">0</oef:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
    <oef:MaximumDeferredSalesChargeOverOfferingPrice
      contextRef="D20260331_20260331_S000002323Member_C000006079Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_6_ae541e54_57b9_4eba_b226_3ab5658e6acd"
      unitRef="pure">0</oef:MaximumDeferredSalesChargeOverOfferingPrice>
    <oef:MaximumDeferredSalesChargeOverOfferingPrice
      contextRef="D20260331_20260331_S000002323Member_C000006081Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_8_5e1c2d16_95aa_482c_91cf_2dfb4e987e9e"
      unitRef="pure">0.0100</oef:MaximumDeferredSalesChargeOverOfferingPrice>
    <oef:MaximumDeferredSalesChargeOverOfferingPrice
      contextRef="D20260331_20260331_S000002323Member_C000006082Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_10_4f5d20c0_1ac6_4866_8fc3_516c62089e0c"
      unitRef="pure">0</oef:MaximumDeferredSalesChargeOverOfferingPrice>
    <oef:MaximumDeferredSalesChargeOverOfferingPrice
      contextRef="D20260331_20260331_S000002323Member_C000006083Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_11_b0fcc55d_1968_4bfe_99a9_d1988c86f93c"
      unitRef="pure">0</oef:MaximumDeferredSalesChargeOverOfferingPrice>
    <oef:OperatingExpensesCaption
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember"
      id="t_7_37f94d5e_76db_4db3_877e_b28fbeb177bc">  Annual Fund Operating Expenses  (expenses that you pay each year as a  percentage of the value of your investment)  </oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="D20260331_20260331_S000002323Member_C000006079Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_12_fbb233fc_42a5_4efe_a3f2_37e34fa2a81e"
      unitRef="pure">0.0050</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="D20260331_20260331_S000002323Member_C000006081Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_13_1862d06e_f3ea_4426_8316_4c5da59c5379"
      unitRef="pure">0.0050</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="D20260331_20260331_S000002323Member_C000006082Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_14_ef9261a3_d080_4758_91aa_4034247381a4"
      unitRef="pure">0.0050</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="D20260331_20260331_S000002323Member_C000006083Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_15_8f095fe1_c6f9_452a_addd_d8d55638200a"
      unitRef="pure">0.0050</oef:ManagementFeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="D20260331_20260331_S000002323Member_C000006079Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_16_ef6b6d09_278d_4943_956f_65d37f81240c"
      unitRef="pure">0.0025</oef:DistributionAndService12b1FeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="D20260331_20260331_S000002323Member_C000006081Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_17_8a091014_2271_4fa4_8634_f51d02e9df85"
      unitRef="pure">0.0100</oef:DistributionAndService12b1FeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="D20260331_20260331_S000002323Member_C000006082Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_18_f68ca87a_f945_4c0a_9a3d_9d2989731d8f"
      unitRef="pure">0</oef:DistributionAndService12b1FeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="D20260331_20260331_S000002323Member_C000006083Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_19_eedac707_a067_442a_9676_c3082e967502"
      unitRef="pure">0.0050</oef:DistributionAndService12b1FeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="D20260331_20260331_S000002323Member_C000006079Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_20_8e01e45b_942e_4749_9c24_3fdd008cf29b"
      unitRef="pure">0.0025</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="D20260331_20260331_S000002323Member_C000006081Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_21_244c54b1_a056_405f_8fe9_0616e434a4b3"
      unitRef="pure">0.0041</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="D20260331_20260331_S000002323Member_C000006082Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_22_a2b971ad_2724_4775_b6f7_dda66819233f"
      unitRef="pure">0.0025</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="D20260331_20260331_S000002323Member_C000006083Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_23_0f560d91_4de3_4bcc_961f_1e5613932d8d"
      unitRef="pure">0.0033</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="D20260331_20260331_S000002323Member_C000006079Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_24_9debc216_e166_4ad7_a1c8_d047d17dd619"
      unitRef="pure">0.0100</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="D20260331_20260331_S000002323Member_C000006081Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_25_71bb4ec7_4036_46cc_bd01_0c759cf7ebd9"
      unitRef="pure">0.0191</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="D20260331_20260331_S000002323Member_C000006082Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_26_61b17231_7876_4459_b4bb_865b34a40f5a"
      unitRef="pure">0.0075</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="D20260331_20260331_S000002323Member_C000006083Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_27_11ec0a45_4edf_4d82_85a6_93e3e684794e"
      unitRef="pure">0.0133</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="D20260331_20260331_S000002323Member_C000006079Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_28_55e5a5c0_1f16_4e84_9649_2c0f05ce8de1"
      unitRef="pure">-0.0027</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="D20260331_20260331_S000002323Member_C000006081Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_29_f5bc58d8_9d46_4586_a3e7_d16442930a16"
      unitRef="pure">-0.0043</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="D20260331_20260331_S000002323Member_C000006082Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_30_30fb0110_3f54_4bd4_9eae_85e81f220276"
      unitRef="pure">-0.0027</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="D20260331_20260331_S000002323Member_C000006083Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_31_4f775bbf_bc1c_40f0_8b47_c5241dc91c98"
      unitRef="pure">-0.0035</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="D20260331_20260331_S000002323Member_C000006079Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_32_6bb12738_aba0_4868_bfde_bca61eb1fb1e"
      unitRef="pure">0.0073</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="D20260331_20260331_S000002323Member_C000006081Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_33_ad518d58_55e2_433a_a84a_a0d9c543d221"
      unitRef="pure">0.0148</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="D20260331_20260331_S000002323Member_C000006082Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_34_73faa5bd_4244_48ad_8754_7db52152f625"
      unitRef="pure">0.0048</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="D20260331_20260331_S000002323Member_C000006083Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_35_046c8ef4_72af_4dac_be53_a57a60e6621d"
      unitRef="pure">0.0098</oef:NetExpensesOverAssets>
    <oef:ExpensesDeferredChargesTextBlock
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember"
      id="t_17_7201ec74_985a_35e2_c8c1_2532db4277fc">A contingent deferred sales charge (&#x201c;CDSC&#x201d;) of 1.00% is assessed on certain redemptions of Investor A Shares made within 18 months after&#160;purchase where no initial sales charge was paid at the time of purchase as part of an investment of $1,000,000 or more.</oef:ExpensesDeferredChargesTextBlock>
    <oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember"
      id="t_18_110f11bc_da90_1881_ec59_d6840935fdac">June 30, 2028</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpenseExampleHeading
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember"
      id="t_8_77f339ed_4ed1_4590_9b4b_dae5e244b9d8"> Example: </oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember"
      id="t_9_2d5a10a0_4acf_4289_9333_72a9e0e92827"> &lt;div style="line-height: 10.3509pt; margin-top: 0.0pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;or lower, based on these assumptions your costs would be:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 1pt; line-height: 0.93pt;"&gt;&#x2003;&lt;/span&gt;&lt;/div&gt; </oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="D20260331_20260331_S000002323Member_C000006079Member_InvestorACInstitutionalAndClassRMember"
      decimals="INF"
      id="h_36_ebf5f22f_1bf4_4e0e_ab67_f3b2f1ebd373"
      unitRef="USD">596</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="D20260331_20260331_S000002323Member_C000006079Member_InvestorACInstitutionalAndClassRMember"
      decimals="INF"
      id="h_37_91230819_6398_48ca_beec_f98c7715430a"
      unitRef="USD">801</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="D20260331_20260331_S000002323Member_C000006079Member_InvestorACInstitutionalAndClassRMember"
      decimals="INF"
      id="h_38_2a4f9608_2df4_4b06_9a09_9700108e59fa"
      unitRef="USD">1024</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="D20260331_20260331_S000002323Member_C000006079Member_InvestorACInstitutionalAndClassRMember"
      decimals="INF"
      id="h_39_eed8fa8f_d66d_460d_9cea_24a6066e1e31"
      unitRef="USD">1662</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="D20260331_20260331_S000002323Member_C000006081Member_InvestorACInstitutionalAndClassRMember"
      decimals="INF"
      id="h_40_040e2736_c4c2_4903_9c2e_d13c3d3fb03f"
      unitRef="USD">251</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="D20260331_20260331_S000002323Member_C000006081Member_InvestorACInstitutionalAndClassRMember"
      decimals="INF"
      id="h_41_66fc692a_8c81_4a46_823b_17c5e93e8f90"
      unitRef="USD">558</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="D20260331_20260331_S000002323Member_C000006081Member_InvestorACInstitutionalAndClassRMember"
      decimals="INF"
      id="h_42_ba399f74_cb57_4f04_9aae_9d511104915e"
      unitRef="USD">992</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="D20260331_20260331_S000002323Member_C000006081Member_InvestorACInstitutionalAndClassRMember"
      decimals="INF"
      id="h_43_54d3c476_08d6_406b_8080_dad97f746bb0"
      unitRef="USD">1960</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="D20260331_20260331_S000002323Member_C000006082Member_InvestorACInstitutionalAndClassRMember"
      decimals="INF"
      id="h_44_7cceac8d_b39b_4b78_a7f8_ede7ce7cdf75"
      unitRef="USD">49</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="D20260331_20260331_S000002323Member_C000006082Member_InvestorACInstitutionalAndClassRMember"
      decimals="INF"
      id="h_45_5a031856_2367_43b8_a7a2_9bd2b651d4af"
      unitRef="USD">213</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="D20260331_20260331_S000002323Member_C000006082Member_InvestorACInstitutionalAndClassRMember"
      decimals="INF"
      id="h_46_61e5479c_306f_4d59_a042_a80d4c5eb397"
      unitRef="USD">390</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="D20260331_20260331_S000002323Member_C000006082Member_InvestorACInstitutionalAndClassRMember"
      decimals="INF"
      id="h_47_c1f02014_a126_4d21_8878_be263a418d29"
      unitRef="USD">905</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="D20260331_20260331_S000002323Member_C000006083Member_InvestorACInstitutionalAndClassRMember"
      decimals="INF"
      id="h_48_efc349ab_a5f8_499b_98c2_a70c9b11c965"
      unitRef="USD">100</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="D20260331_20260331_S000002323Member_C000006083Member_InvestorACInstitutionalAndClassRMember"
      decimals="INF"
      id="h_49_16ae6c12_f556_441b_ad85_210db851300c"
      unitRef="USD">387</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="D20260331_20260331_S000002323Member_C000006083Member_InvestorACInstitutionalAndClassRMember"
      decimals="INF"
      id="h_50_92b096c3_f5a7_44e3_ae30_22cc4c867239"
      unitRef="USD">695</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="D20260331_20260331_S000002323Member_C000006083Member_InvestorACInstitutionalAndClassRMember"
      decimals="INF"
      id="h_51_6646d839_4672_4638_a259_cefa95a23ab6"
      unitRef="USD">1571</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleNoRedemptionByYearCaption
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember"
      id="t_19_2584f295_ac1b_2300_9946_ec4fafa2cdcb"> You would pay the following expenses if you did not redeem your shares:&#x2003; </oef:ExpenseExampleNoRedemptionByYearCaption>
    <oef:ExpenseExampleNoRedemptionYear01
      contextRef="D20260331_20260331_S000002323Member_C000006081Member_InvestorACInstitutionalAndClassRMember"
      decimals="INF"
      id="h_52_e65ae4ef_3130_4ce6_9069_2a410d4a0920"
      unitRef="USD">151</oef:ExpenseExampleNoRedemptionYear01>
    <oef:ExpenseExampleNoRedemptionYear03
      contextRef="D20260331_20260331_S000002323Member_C000006081Member_InvestorACInstitutionalAndClassRMember"
      decimals="INF"
      id="h_53_91b34f8e_d061_44c7_95bc_33b335242e92"
      unitRef="USD">558</oef:ExpenseExampleNoRedemptionYear03>
    <oef:ExpenseExampleNoRedemptionYear05
      contextRef="D20260331_20260331_S000002323Member_C000006081Member_InvestorACInstitutionalAndClassRMember"
      decimals="INF"
      id="h_54_d9b09cee_d2e0_4316_af50_356c586fd0fb"
      unitRef="USD">992</oef:ExpenseExampleNoRedemptionYear05>
    <oef:ExpenseExampleNoRedemptionYear10
      contextRef="D20260331_20260331_S000002323Member_C000006081Member_InvestorACInstitutionalAndClassRMember"
      decimals="INF"
      id="h_55_496a26c7_feef_4c15_851e_158183c7cd63"
      unitRef="USD">1960</oef:ExpenseExampleNoRedemptionYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember"
      id="t_10_f2f609c1_4f23_4ebe_a056_562bc115ef34">  Portfolio Turnover:  </oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember"
      id="t_11_432c0466_0abd_42d8_8e4d_b7f2f76b0838"> &lt;div style="line-height: 10.3509pt; margin-top: 0.00pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund&#x2019;s portfolio turnover rate was &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;90&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;% of the average value of its portfolio.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.3509pt;"&gt; &lt;/span&gt;&lt;/div&gt; </oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_56_8cb23212_1144_4e9a_99b1_b2eb6a982a14"
      unitRef="pure">0.90</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember"
      id="t_20_61008832_90db_bbd6_2b08_38a9944c88f7">Principal Investment Strategies of the Fund</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember"
      id="t_46_698e8eda_39a9_d118_13d3_269f3f1b642b"> &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Under normal circumstances, the Fund seeks to invest at least 80% of its net assets, plus the amount of any&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;borrowings for investment purposes, in equity securities of U.S. small and medium capitalization companies, and&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;derivatives that have similar economic characteristics to such securities. Investments in derivatives are counted&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;toward the Fund&#x2019;s 80% policy to the extent that they provide investment exposure to the securities included within that&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;policy or to one or more market risk factors associated with such securities. The Fund primarily intends to invest in&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;equity securities or other financial instruments that are components of, or have characteristics similar to, the&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;securities included in the Russell 2500&#x2122; Index. The Russell 2500&#x2122; Index is an index that measures the performance&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;of the small to mid-cap segment of the U.S. equity universe, commonly referred to as &#x201c;smid&#x201d; cap. The Russell 2500&#x2122;&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Index is a subset of the Russell 3000&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 5pt; position: relative; top: -3.25pt;"&gt;&#xae;&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Index. It includes approximately 2500 of the smallest securities of the Russell&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;3000&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 5pt; position: relative; top: -3.25pt;"&gt;&#xae;&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Index based on a combination of their market cap and current index membership. The Fund may invest in&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;issuers of any market capitalization. The equity securities in which the Fund invests primarily consist of common stock,&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;but may also include preferred stock. From time to time, the Fund may invest in shares of companies through &#x201c;new&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;issues&#x201d; or initial public offerings (&#x201c;IPOs&#x201d;). The Fund may also purchase convertible securities.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund may use derivatives, including options, futures, swaps (including, but not limited to, total return swaps that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;may be referred to as contracts for difference) and forward contracts, both to seek to increase the return of the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;and to hedge (or protect) the value of its assets against adverse movements in interest rates and movements in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;securities markets. In order to manage cash flows into or out of the Fund effectively, the Fund may buy and sell &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;financial futures contracts or options on such contracts. Derivatives are financial instruments whose value is derived &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;from another security, a currency or an index, including but not limited to the Russell 2500&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 5pt; position: relative; top: -3.25pt;"&gt;TM&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund seeks to pursue its investment objective by investing in securities in a disciplined manner, by using &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;proprietary return forecast models that incorporate quantitative analysis. These forecast models are designed to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;identify aspects of mispricing across stocks which the Fund can seek to capture by over- and under-weighting particular &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;equity securities while seeking to control incremental risk. BlackRock then constructs and rebalances the portfolio by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;integrating its investment insights with the model-based optimization process.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund may engage in active and frequent trading of portfolio securities to seek to achieve its primary investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;strategies.&lt;/span&gt;&lt;/div&gt; </oef:StrategyNarrativeTextBlock>
    <fnd:NmRule35d1EightyPctInvstmntPlcyTextBlock
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember"
      id="t_44_b2f19605_83ad_c09d_5a0e_85aa9711ffcc">Under normal circumstances, the Fund seeks to invest at least 80% of its net assets, plus the amount of any&#160;borrowings for investment purposes, in equity securities of U.S. small and medium capitalization companies, and&#160;derivatives that have similar economic characteristics to such securities. Investments in derivatives are counted&#160;toward the Fund&#x2019;s 80% policy to the extent that they provide investment exposure to the securities included within that&#160;policy or to one or more market risk factors associated with such securities.</fnd:NmRule35d1EightyPctInvstmntPlcyTextBlock>
    <fnd:NmRule35d1TermDfnSmryTextBlock
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember"
      id="t_43_07fe45d7_1a94_e541_6672_93f26b58aea2">The Fund primarily intends to invest in&#160;equity securities or other financial instruments that are components of, or have characteristics similar to, the&#160;securities included in the Russell 2500&#x2122; Index. The Russell 2500&#x2122; Index is an index that measures the performance&#160;of the small to mid-cap segment of the U.S. equity universe, commonly referred to as &#x201c;smid&#x201d; cap. The Russell 2500&#x2122;&#160;Index is a subset of the Russell 3000&#xae;&#160;Index. It includes approximately 2500 of the smallest securities of the Russell&#160;3000&#xae;&#160;Index based on a combination of their market cap and current index membership. The Fund may invest in&#160;issuers of any market capitalization. The equity securities in which the Fund invests primarily consist of common stock,&#160;but may also include preferred stock. From time to time, the Fund may invest in shares of companies through &#x201c;new&#160;issues&#x201d; or initial public offerings (&#x201c;IPOs&#x201d;). The Fund may also purchase convertible securities.</fnd:NmRule35d1TermDfnSmryTextBlock>
    <fnd:NmRule35d1TermSlctnCritSmryTextBlock
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember"
      id="t_45_129e00f9_cd34_d1d0_cd81_91ca80925c20">  &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund seeks to pursue its investment objective by investing in securities in a disciplined manner, by using &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;proprietary return forecast models that incorporate quantitative analysis. These forecast models are designed to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;identify aspects of mispricing across stocks which the Fund can seek to capture by over- and under-weighting particular &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;equity securities while seeking to control incremental risk. BlackRock then constructs and rebalances the portfolio by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;integrating its investment insights with the model-based optimization process.&lt;/span&gt;&lt;/div&gt;  </fnd:NmRule35d1TermSlctnCritSmryTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember_RiskLoseMoneyMember"
      id="t_47_0e671d76_6243_b6b0_6633_146deaae4d3d">You may lose part or all of your&#160;investment in the Fund or your investment may not perform as well as other similar investments.</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember_RiskNotInsuredDepositoryInstitutionMember"
      id="t_48_d19c357b_f7a3_6026_5062_954fd237699b">An investment in the&#160;Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any othergovernment agency.</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember_EquitySecuritiesRiskMember"
      id="t_49_4be98598_9670_49ad_e56d_a313c576c568"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7691pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.50pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.43pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Equity Securities Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; Stock markets are volatile. The price of equity securities fluctuates based on changes in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;company&#x2019;s financial condition and overall market and economic conditions.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember_SmallAndMidCapitalizationCompanyRiskMember"
      id="t_50_8c7d49c9_f777_2377_6564_6f0af94e9293"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7691pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.50pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.43pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Small and Mid-Capitalization Company Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; Companies with small or mid-size market capitalizations will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;normally have more limited product lines, markets and financial resources and will be dependent upon a more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;limited management group than larger capitalized companies. In addition, it is more difficult to get information on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;smaller companies, which tend to be less well known, have shorter operating histories, do not have significant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;ownership by large investors and are followed by relatively few securities analysts.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember_InvestmentStyleRiskMember"
      id="t_51_c2518830_2f17_2301_5cff_cd8ff10f54df"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7791pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.50pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.43pt; margin-left: 4pt; text-align: left; width: 505.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Investment Style Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;&#x2014;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; Under certain market conditions, value investments have performed better during periods &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;of economic recovery. Therefore, this investment style may over time go in and out of favor. At times when the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;investment style used by the Fund is out of favor, the Fund may underperform other equity funds that use different &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;investment styles.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember_ModelRiskMember"
      id="t_52_c793428e_7d18_92a5_550f_95d57972f5b5"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7791pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.50pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.43pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Model Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; The Fund seeks to pursue its investment objective by using proprietary models that incorporate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;quantitative analysis. Investments selected using these models may perform differently than as forecasted due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;the factors incorporated into the models and the weighting of each factor, changes from historical trends, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;issues in the construction and implementation of the models (including, but not limited to, software issues, issues &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;related to the use of artificial intelligence and machine learning (&#x201c;AI&#x201d;), and other technological issues). There is no &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;guarantee that BlackRock&#x2019;s use of these models will result in effective investment decisions for the Fund.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.3509pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt;  &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The information and data used in the models may be supplied by third parties. Inaccurate or incomplete data may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;limit the effectiveness of the models. In addition, some of the data that BlackRock uses may be historical data, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;which may not accurately predict future market movement. There is a risk that the models will not be successful in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;selecting investments or in determining the weighting of investment positions that will enable the Fund to achieve &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;its investment objective.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.3509pt;"&gt; &lt;/span&gt;&lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember_ConvertibleSecuritiesRiskMember"
      id="t_53_b07a1711_0586_7e38_d256_f5e8c98d2893"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7691pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.50pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.43pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Convertible Securities Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; The market value of a convertible security performs like that of a regular debt &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;security; that is, if market interest rates rise, the value of a convertible security usually falls. In addition, convertible &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;securities are subject to the risk that the issuer will not be able to pay interest, principal or dividends when due, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;their market value may change based on changes in the issuer&#x2019;s credit rating or the market&#x2019;s perception of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;issuer&#x2019;s creditworthiness. Since it derives a portion of its value from the common stock into which it may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;converted, a convertible security is also subject to the same types of market and issuer risks that apply to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;underlying common stock, including the potential for increased volatility in the price of the convertible security.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.3509pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember_DerivativesRisksMember"
      id="t_54_c9350619_045e_5bc8_506e_bf6fc157ee72"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7791pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.50pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.43pt; margin-left: 4pt; text-align: left; width: 505.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Derivatives Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; The Fund&#x2019;s use of derivatives may increase its costs, reduce the Fund&#x2019;s returns and/or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;increase volatility. Derivatives involve significant risks, including:&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt;  &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Leverage Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; The Fund&#x2019;s use of derivatives can magnify the Fund&#x2019;s gains and losses. Relatively small market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;movements may result in large changes in the value of a derivatives position and can result in losses that greatly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;exceed the amount originally invested.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Some derivatives are more sensitive to interest rate changes and market price fluctuations than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;other securities. The Fund could also suffer losses related to its derivatives positions as a result of unanticipated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;market movements, which losses are potentially unlimited. Finally, BlackRock may not be able to predict correctly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;the direction of securities prices, interest rates and other economic factors, which could cause the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;derivatives positions to lose value.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Counterparty Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Derivatives are also subject to counterparty risk, which is the risk that the other party in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;transaction will be unable or unwilling to fulfill its contractual obligation, and the related risks of having concentrated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;exposure to such a counterparty.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Illiquidity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; The possible lack of a liquid secondary market for derivatives and the resulting inability of the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;to sell or otherwise close a derivatives position could expose the Fund to losses and could make derivatives more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;difficult for the Fund to value accurately.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; The use of derivatives includes the risk of potential operational issues, including documentation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;issues, settlement issues, systems failures, inadequate controls and human error.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Legal Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; The risk of insufficient documentation, insufficient capacity or authority of counterparty, or legality or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;enforceability of a contract.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Volatility and Correlation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Volatility is defined as the characteristic of a security, an index or a market to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;fluctuate significantly in price within a short time period. A risk of the Fund&#x2019;s use of derivatives is that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;fluctuations in their values may not correlate with the overall securities markets.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Valuation for derivatives may not be readily available in the market. Valuation may be more difficult &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;in times of market turmoil since many investors and market makers may be reluctant to purchase complex &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;instruments or quote prices for them.&lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.3509pt; margin-left: 12pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Hedging Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Hedges are sometimes subject to imperfect matching between the derivative and the underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;security, and there can be no assurance that the Fund&#x2019;s hedging transactions will be effective. The use of hedging &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;may result in certain adverse tax consequences.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Tax Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Certain aspects of the tax treatment of derivative instruments, including swap agreements and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;commodity-linked derivative instruments, are currently unclear and may be affected by changes in legislation, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;regulations or other legally binding authority. Such treatment may be less favorable than that given to a direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;investment in an underlying asset and may adversely affect the timing, character and amount of income the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;realizes from its investments.&lt;/span&gt;&lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember_HighPortfolioTurnoverRiskMember"
      id="t_55_7d90a30e_304c_a5f1_24d7_9bda53cde251"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7691pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.50pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.43pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;High Portfolio Turnover Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; The Fund may engage in active and frequent trading of its portfolio securities. High &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;portfolio turnover (more than 100%) may result in increased transaction costs to the Fund, including brokerage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;commissions, dealer mark-ups and other transaction costs on the sale of the securities and on reinvestment in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;other securities. The sale of Fund portfolio securities may result in the realization and/or distribution to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;shareholders of higher capital gains or losses as compared to a fund with less active trading policies. These effects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;of higher than normal portfolio turnover may adversely affect Fund performance.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember_LeverageRiskMember"
      id="t_56_1a5b00da_657f_2dd1_9e47_0e0a090fdbe1"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7691pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.50pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.43pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Leverage Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Some transactions may give rise to a form of economic leverage. These transactions may include, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;among others, derivatives, and may expose the Fund to greater risk and increase its costs. The use of leverage may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;cause the Fund to liquidate portfolio positions when it may not be advantageous to do so to satisfy its obligations or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;to meet the applicable requirements of the Investment Company Act of 1940, as amended, and the rules &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;thereunder. Increases and decreases in the value of the Fund&#x2019;s portfolio will be magnified when the Fund uses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;leverage.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.3509pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember_MarketRiskAndSelectionRiskMember"
      id="t_57_39375eea_f188_8f7d_bc4a_5a72353d25d6"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7691pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.50pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.43pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Market Risk and Selection Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; Market risk is the risk that one or more markets in which the Fund invests will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;go down in value, including the possibility that the markets will go down sharply and unpredictably. The value of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;security or other asset may decline due to changes in general market conditions, economic trends or events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;are not specifically related to the issuer of the security or other asset, or factors that affect a particular issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;issuers, exchange, country, group of countries, region, market, industry, group of industries, sector or asset class. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Local, regional or global events such as war, acts of terrorism, the spread of infectious illness or other public health &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;issues like pandemics or epidemics, recessions, or other events could have a significant impact on the Fund and its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;investments. Selection risk is the risk that the securities selected by Fund management will underperform the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;markets, the relevant indices or the securities selected by other funds with similar investment objectives and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;investment strategies. The Fund seeks to pursue its investment objective by using proprietary models that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;incorporate quantitative analysis and is subject to &#x201c;Model Risk&#x201d; as described above. This means you may lose &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;money.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt;  &lt;div style="margin-top: 2pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Recent policy initiatives undertaken by the U.S. government have the potential to impact international relations, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;trade agreements and the overall regulatory environment in ways that could create uncertainty and instability in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;domestic and global markets, and could adversely affect the investment performance of the Fund. In particular, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;actions taken by the U.S. government in respect of international trade relations could lead to trade wars, increased &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;costs for imported goods, disruptions in supply chains, reduced foreign investment, and instability in regions where &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;the Fund invests.&lt;/span&gt;&lt;/div&gt; </oef:RiskTextBlock>
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      id="t_58_c3b7c31e_d3b9_9a52_2d72_e8e24b4e5ba4"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7691pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.50pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.43pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;&#x201c;New Issues&#x201d; Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;&#x2014;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x201c;New issues&#x201d; are IPOs of equity securities. Securities issued in IPOs have no trading history, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;and information about the companies may be available for very limited periods. In addition, the prices of securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;sold in IPOs may be highly volatile or may decline shortly after the IPO.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
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      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember_OperationalAndTechnologyRisksMember"
      id="t_59_02346a37_ae96_2302_95c3_924e3aa4d810"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7791pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.50pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.43pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Operational and Technology Risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; The Fund is directly and indirectly susceptible to operational and technology &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;risks, including those related to human errors, processing errors, communication errors, systems failures, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;cybersecurity incidents, and the use of artificial intelligence and machine learning (&#x201c;AI&#x201d;), which may result in losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;for the Fund and its shareholders or may impair the Fund&#x2019;s operations. While the Fund&#x2019;s service providers are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;required to have appropriate operational, information security and cybersecurity risk management policies and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;procedures, their methods of risk management may differ from those of the Fund. Operational and technology risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;for the issuers in which the Fund invests could also result in material adverse consequences for such issuers and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;may cause the Fund&#x2019;s investments in such issuers to lose value.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
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      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember_PreferredSecuritiesRiskMember"
      id="t_60_2ff581d7_6bde_5cd9_e676_59b84fafb3ee"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7791pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.50pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.43pt; margin-left: 4pt; text-align: left; width: 505.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Preferred Securities Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Preferred securities may pay fixed or adjustable rates of return. Preferred securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;are subject to issuer-specific and market risks applicable generally to equity securities. In addition, a company&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;preferred securities generally pay dividends only after the company makes required payments to holders of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;bonds and other debt. For this reason, the value of preferred securities will usually react more strongly than bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;and other debt to actual or perceived changes in the company&#x2019;s financial condition or prospects. Preferred &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;securities of smaller companies may be more vulnerable to adverse developments than preferred securities of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;larger companies.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
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      id="t_61_6fbcd0a5_5e8a_069a_7113_72a6a3280eca"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7691pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.50pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.43pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the United States &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;&#x2014;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; Certain changes in the U.S. economy, such as when the U.S. economy &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;weakens or when its financial markets decline, may have an adverse effect on the securities to which the Fund has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;exposure.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember"
      id="t_21_5f657e92_e957_42ca_06f7_d17738e256c1">Performance Information</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember"
      id="t_29_03bd6227_3468_51bf_09fd_599cd17b70fb"> &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The information shows you how the Fund&#x2019;s performance has varied year by year and provides some indication of the&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;risks of investing in the Fund. Effective February 9, 2021, the Fund changed its name and investment strategies. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Performance for the period between December 15, 2017 and February 8, 2021 shown below is based on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;investment strategies utilized by the Fund when it followed different investment strategies under the name &#x201c;BlackRock &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Advantage U.S. Total Market Fund, Inc.&#x201d; The Fund&#x2019;s returns prior to December 15, 2017 as reflected in the bar chart &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;and the table are the returns of the Fund when it followed a different investment objective and different investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;strategies under the name &#x201c;BlackRock Value Opportunities Fund, Inc.&#x201d; The table compares the Fund&#x2019;s performance to&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;that of the Russell 3000&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 5pt; position: relative; top: -3.25pt;"&gt;&#xae;&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Index and the Russell 2500&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 5pt; position: relative; top: -3.25pt;"&gt;TM&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Index. The Russell 2500&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 5pt; position: relative; top: -3.25pt;"&gt;TM&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Index is relevant to the Fund&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;because it has characteristics similar to the Fund&#x2019;s investment strategy. To the extent that dividends and distributions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;have been paid by the Fund, the performance information for the Fund in the chart and table assumes reinvestment of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;the dividends and distributions. As with all such investments, past performance (before and after taxes) is not an&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;indication of future results. Sales charges are not reflected in the bar chart. If they were, returns would be less than&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;those shown. However, the table includes all applicable fees and sales charges. If the Fund&#x2019;s investment manager and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;its affiliates had not waived or reimbursed certain Fund expenses during these periods, the Fund&#x2019;s returns would have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;been lower. Updated information on the Fund&#x2019;s performance, including its current net asset value, can be obtained by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;visiting www.blackrock.com or can be obtained by phone at &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;(800) 882-0052&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;.&lt;/span&gt;&lt;/div&gt; </oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember"
      id="t_22_149007da_b9e7_8927_f82b_4b20e9cb9dc3">The information shows you how the Fund&#x2019;s performance has varied year by year and provides some indication of the&#160;risks of investing in the Fund.</oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformanceAdditionalMarketIndex
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember"
      id="t_23_80657197_5593_5a9b_453d_3eb3db920a9d">The table compares the Fund&#x2019;s performance to&#160;that of the Russell 3000&#xae;&#160;Index and the Russell 2500TM&#160;Index. The Russell 2500TM&#160;Index is relevant to the Fund&#160;because it has characteristics similar to the Fund&#x2019;s investment strategy.</oef:PerformanceAdditionalMarketIndex>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember"
      id="t_24_b7ccea06_df0e_5626_2baa_c90d25653d71">As with all such investments, past performance (before and after taxes) is not an&#160;indication of future results.</oef:PerformancePastDoesNotIndicateFuture>
    <oef:BarChartDoesNotReflectSalesLoads
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember"
      id="t_25_e0a604d9_dae7_c107_0a64_61b340ba0893">Sales charges are not reflected in the bar chart. If they were, returns would be less than&#160;those shown.</oef:BarChartDoesNotReflectSalesLoads>
    <oef:PerformanceTableDoesReflectSalesLoads
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember"
      id="t_26_96ee904a_65cd_8184_8396_48253f94e920">However, the table includes all applicable fees and sales charges.</oef:PerformanceTableDoesReflectSalesLoads>
    <oef:PerformanceAvailabilityWebSiteAddress
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember"
      id="t_27_edfcd044_bd2b_124f_61b7_80bceb8f7cf5">www.blackrock.com</oef:PerformanceAvailabilityWebSiteAddress>
    <oef:PerformanceAvailabilityPhone
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember"
      id="t_28_1cff8425_1942_497e_1a75_fd76c0f0439c">(800) 882-0052</oef:PerformanceAvailabilityPhone>
    <oef:BarChartHeading
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember"
      id="t_30_584c3c59_2eb3_fa6c_f935_0b45cf57258d"> Investor A Shares ANNUAL TOTAL RETURNS BlackRock Advantage SMID Cap Fund, Inc. As of 12/31 </oef:BarChartHeading>
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      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember"
      id="t_37_65a87f12_d755_3055_c8c5_1bc2e55ab64b"> &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;During the ten-year period shown in the bar chart, the highest return for a quarter was 22.11% (quarter ended &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;June 30, 2020) and the lowest return for a quarter was -20.29% (quarter ended March 31, 2020). The year-to-date return&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; as of June 30, 2026 was 24.34%.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 1pt; line-height: 0.93pt;"&gt;&#x2003;&lt;/span&gt;&lt;/div&gt; </oef:BarChartClosingTextBlock>
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      id="t_31_fd1ad5f9_49e6_e389_2735_ec1a5dee142b">highest return</oef:HighestQuarterlyReturnLabel>
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      decimals="4"
      id="h_81_7a4d79df_a45b_a7e4_c831_bec2d5392aac"
      unitRef="pure">0.2211</oef:BarChartHighestQuarterlyReturn>
    <oef:BarChartHighestQuarterlyReturnDate
      contextRef="D20260331_20260331_S000002323Member_C000006079Member_InvestorACInstitutionalAndClassRMember"
      id="t_32_6465bbab_fe41_e5a4_972d_50e798e00374">2020-06-30</oef:BarChartHighestQuarterlyReturnDate>
    <oef:LowestQuarterlyReturnLabel
      contextRef="D20260331_20260331_S000002323Member_C000006079Member_InvestorACInstitutionalAndClassRMember"
      id="t_33_a1bafc8e_0730_3903_8f34_e90f8a955bef">lowest return</oef:LowestQuarterlyReturnLabel>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="D20260331_20260331_S000002323Member_C000006079Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_82_2b153f92_9c17_0a4b_8184_b7971c1cf3e7"
      unitRef="pure">-0.2029</oef:BarChartLowestQuarterlyReturn>
    <oef:BarChartLowestQuarterlyReturnDate
      contextRef="D20260331_20260331_S000002323Member_C000006079Member_InvestorACInstitutionalAndClassRMember"
      id="t_34_80173a20_fc31_9172_d28b_d18ba5a8dab1">2020-03-31</oef:BarChartLowestQuarterlyReturnDate>
    <oef:YearToDateReturnLabel
      contextRef="D20260331_20260331_S000002323Member_C000006079Member_InvestorACInstitutionalAndClassRMember"
      id="t_35_6bb29c14_133b_b67a_5690_5e74cb709c23">year-to-date return</oef:YearToDateReturnLabel>
    <oef:BarChartYearToDateReturnDate
      contextRef="D20260331_20260331_S000002323Member_C000006079Member_InvestorACInstitutionalAndClassRMember"
      id="t_36_a24bd29c_bc58_89e3_fbec_c5e42df39687">2026-06-30</oef:BarChartYearToDateReturnDate>
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      contextRef="D20260331_20260331_S000002323Member_C000006079Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_83_6415584d_72ac_566a_baa5_1b1be6dc3b71"
      unitRef="pure">0.2434</oef:BarChartYearToDateReturn>
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      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember"
      id="t_38_3ae9781c_177a_2fb9_0587_559b477eba12">For the periods ended 12/31/25Average Annual Total Returns</oef:PerformanceTableHeading>
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      decimals="4"
      id="h_57_b949c582_bf15_48db_b8f5_bda26b87a82a"
      unitRef="pure">0.0518</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
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      decimals="4"
      id="h_58_b91b959f_91fe_412e_87c1_eb3f53ee0a80"
      unitRef="pure">0.0567</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2025_C000006079Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_59_9a199c15_e60f_4116_bc91_ebf141fbf0d4"
      unitRef="pure">0.0975</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FY2025_C000006079Member_InvestorACInstitutionalAndClassRMember_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_60_fede1580_fab1_438c_94f1_337f224142c3"
      unitRef="pure">0.0360</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2025_C000006079Member_InvestorACInstitutionalAndClassRMember_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_61_c7d519d4_a358_41f5_954f_5fb2c7feda02"
      unitRef="pure">0.0300</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2025_C000006079Member_InvestorACInstitutionalAndClassRMember_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_62_a569119c_2bbc_4d8a_9118_4c4943aad04e"
      unitRef="pure">0.0701</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FY2025_C000006079Member_InvestorACInstitutionalAndClassRMember_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_63_6bfc0bc9_d335_4655_8d93_244b1fe77d02"
      unitRef="pure">0.0367</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2025_C000006079Member_InvestorACInstitutionalAndClassRMember_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_64_120b25f7_5e75_4a2b_a725_ce42dc5bd909"
      unitRef="pure">0.0356</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2025_C000006079Member_InvestorACInstitutionalAndClassRMember_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_65_d69023e5_ce53_4e67_a784_02cae0fec741"
      unitRef="pure">0.0696</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FY2025_C000006081Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_66_643eb53b_048f_45c4_8b9c_695029cab7bd"
      unitRef="pure">0.0922</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2025_C000006081Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_67_086dabd7_18b8_486c_8d58_d176f39ea824"
      unitRef="pure">0.0602</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2025_C000006081Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_68_20d192b1_3a82_4eb8_ba61_c2016600f7e9"
      unitRef="pure">0.0967</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FY2025_C000006082Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_69_08ea3084_3161_47bd_95b9_efa4b0d040e7"
      unitRef="pure">0.1130</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2025_C000006082Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_70_47c71700_ae0f_4a9b_95c4_937b6f09b137"
      unitRef="pure">0.0708</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2025_C000006082Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_71_6d7c822a_ec52_4a2b_8685_a2f7ad4f015b"
      unitRef="pure">0.1062</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FY2025_C000006083Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_72_f8cf9ff6_b364_48f8_920a_6822d9ee6590"
      unitRef="pure">0.1071</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2025_C000006083Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_73_d7c047b2_b8ad_4851_a529_7154528c3151"
      unitRef="pure">0.0654</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2025_C000006083Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_74_63c5cf1c_5f13_47c5_8b74_0c173d88916b"
      unitRef="pure">0.1006</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FY2025_InvestorACInstitutionalAndClassRMember_Russell3000IndexMember"
      decimals="4"
      id="h_75_40ad20eb_42e9_42f8_96a4_1584c6ec1861"
      unitRef="pure">0.1715</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2025_InvestorACInstitutionalAndClassRMember_Russell3000IndexMember"
      decimals="4"
      id="h_76_5795d489_1268_4dc7_9f27_908443ac0a6b"
      unitRef="pure">0.1315</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2025_InvestorACInstitutionalAndClassRMember_Russell3000IndexMember"
      decimals="4"
      id="h_77_2894e25d_0f92_4a3a_90c2_eb21a8825451"
      unitRef="pure">0.1429</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FY2025_InvestorACInstitutionalAndClassRMember_Russell2500IndexMember"
      decimals="4"
      id="h_78_c4cb6335_2740_4154_b930_523e2a193ef7"
      unitRef="pure">0.1191</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2025_InvestorACInstitutionalAndClassRMember_Russell2500IndexMember"
      decimals="4"
      id="h_79_afb00464_52c7_4b9a_95c6_f9d16029b8d2"
      unitRef="pure">0.0726</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2025_InvestorACInstitutionalAndClassRMember_Russell2500IndexMember"
      decimals="4"
      id="h_80_db476d4d_f5aa_4191_a788_47eba35549d4"
      unitRef="pure">0.1040</oef:AvgAnnlRtrPct>
    <oef:PerformanceTableNarrativeTextBlock
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember"
      id="t_42_662c5296_2090_884a_2b3a_f0aac89a6a4a"> &lt;div style="margin-top: 9pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;reflect the impact of state and local taxes. Actual after-tax returns depend on the investor&#x2019;s tax situation and may&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;differ from those shown, and the after-tax returns shown are not relevant to investors who hold their shares through&lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.3509pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown for&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Investor A Shares only, and the after-tax returns for Investor C, Institutional and Class R Shares will vary.&lt;/span&gt;&lt;/div&gt; </oef:PerformanceTableNarrativeTextBlock>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember"
      id="t_39_d4e8156a_4303_8faa_d764_857517bd27d8">After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not&#160;reflect the impact of state and local taxes.</oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember"
      id="t_40_affdfc57_5797_7f04_70b5_761743540cd3">Actual after-tax returns depend on the investor&#x2019;s tax situation and may&#160;differ from those shown, and the after-tax returns shown are not relevant to investors who hold their shares throughtax-deferred arrangements, such as 401(k) plans or individual retirement accounts.</oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:PerformanceTableOneClassOfAfterTaxShown
      contextRef="D20260331_20260331_S000002323Member_InvestorACInstitutionalAndClassRMember"
      id="t_41_e0b9f0e4_4895_6ed1_7481_20efaaff6fc7">After-tax returns are shown for&#160;Investor A Shares only, and the after-tax returns for Investor C, Institutional and Class R Shares will vary.</oef:PerformanceTableOneClassOfAfterTaxShown>
    <oef:RiskReturnHeading
      contextRef="D20260331_20260331_S000002323Member_ClassKMember"
      id="t_28_54802584_f6a6_cbc8_bddc_07753f31a37b">Fund OverviewKey Facts About BlackRock Advantage SMID Cap Fund, Inc.</oef:RiskReturnHeading>
    <oef:ObjectiveHeading
      contextRef="D20260331_20260331_S000002323Member_ClassKMember"
      id="t_71_ae5a68fb_7568_2e80_bbb5_ed2c0965c3db">Investment Objective</oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="D20260331_20260331_S000002323Member_ClassKMember"
      id="t_20_ebe756d3_e28e_4da8_8c5d_a9cd115d4be9"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The investment objective of BlackRock Advantage SMID Cap Fund, Inc. (the &#x201c;Fund&#x201d;) is to seek long-term capital &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;appreciation.&lt;/span&gt;&lt;/div&gt; </oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="D20260331_20260331_S000002323Member_ClassKMember"
      id="t_54_283f0b65_7044_0c61_c25f_501e238f9f7c">Fees and Expenses of the Fund</oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="D20260331_20260331_S000002323Member_ClassKMember"
      id="t_22_e7575c9f_1afb_4f21_87d0_e2201cd83892"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;This table describes the fees and expenses that you may pay if you buy, hold and sell Class K Shares of the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Amounts in the table are rounded to the nearest basis point, which in some cases may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;0.00.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;You may pay other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;fees, such as brokerage commissions and other fees to your financial professional or your selected securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;dealer, broker, investment adviser, service provider or industry professional (including BlackRock Advisors, LLC &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;BlackRock&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;) and its affiliates) (each, a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;Financial Intermediary&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;), which are not reflected in the table and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;example below.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 1pt; line-height: 0.93pt;"&gt;&#x2003;&lt;/span&gt;&lt;/div&gt; </oef:ExpenseNarrativeTextBlock>
    <oef:OperatingExpensesCaption
      contextRef="D20260331_20260331_S000002323Member_ClassKMember"
      id="t_23_3c4e14f2_a22d_448b_9317_8cfa08ee0312">  Annual Fund Operating Expenses  (expenses that you pay each year as a  percentage of the value of your investment)  </oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="D20260331_20260331_S000002323Member_C000199765Member_ClassKMember"
      decimals="4"
      id="h_81_6de4d4fd_4905_4c44_84ed_157a04e1aa21"
      unitRef="pure">0.0050</oef:ManagementFeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="D20260331_20260331_S000002323Member_C000199765Member_ClassKMember"
      decimals="4"
      id="h_82_36693d44_b00b_4d89_8cd3_dd3fa1a50ef5"
      unitRef="pure">0</oef:DistributionAndService12b1FeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="D20260331_20260331_S000002323Member_C000199765Member_ClassKMember"
      decimals="4"
      id="h_83_4757d7bb_7cd0_4e1f_83e2_5871737b24fb"
      unitRef="pure">0.0014</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="D20260331_20260331_S000002323Member_C000199765Member_ClassKMember"
      decimals="4"
      id="h_84_77ee7e58_ec5a_4f34_a02d_4c7fde2627cc"
      unitRef="pure">0.0064</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="D20260331_20260331_S000002323Member_C000199765Member_ClassKMember"
      decimals="4"
      id="h_85_f37c7356_143b_4e8c_b8f6_b0da9a3ec9f8"
      unitRef="pure">-0.0021</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="D20260331_20260331_S000002323Member_C000199765Member_ClassKMember"
      decimals="4"
      id="h_86_afb73c72_d345_4a54_bed5_483e633362a5"
      unitRef="pure">0.0043</oef:NetExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="D20260331_20260331_S000002323Member_ClassKMember"
      id="t_29_cace795f_88f6_0700_5b78_019b9e8eb5a8">June 30, 2028</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpenseExampleHeading
      contextRef="D20260331_20260331_S000002323Member_ClassKMember"
      id="t_24_b7c192b5_1284_44e0_ad10_e95117720009">  Example:  </oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="D20260331_20260331_S000002323Member_ClassKMember"
      id="t_25_bff7440f_05d1_464f_97d7_31c84e1ea84f"> &lt;div style="line-height: 10.3509pt; margin-top: 0.0pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;or lower, based on these assumptions your costs would be:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 1pt; line-height: 0.93pt;"&gt;&#x2003;&lt;/span&gt;&lt;/div&gt; </oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="D20260331_20260331_S000002323Member_C000199765Member_ClassKMember"
      decimals="INF"
      id="h_87_2e82f699_1781_4d75_ac1f_d809f2906ad6"
      unitRef="USD">44</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="D20260331_20260331_S000002323Member_C000199765Member_ClassKMember"
      decimals="INF"
      id="h_88_4cb8c54f_a68e_43d6_96d5_d0ade2f3837b"
      unitRef="USD">184</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="D20260331_20260331_S000002323Member_C000199765Member_ClassKMember"
      decimals="INF"
      id="h_89_543e21b4_68e7_49f0_a531_5d68f89667f2"
      unitRef="USD">336</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="D20260331_20260331_S000002323Member_C000199765Member_ClassKMember"
      decimals="INF"
      id="h_90_0945b232_a0ba_440d_8ea1_90802687d429"
      unitRef="USD">778</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="D20260331_20260331_S000002323Member_ClassKMember"
      id="t_26_2cfd35cd_75b4_4534_a047_c1ad4db8087c">  Portfolio Turnover:  </oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="D20260331_20260331_S000002323Member_ClassKMember"
      id="t_27_25c642dd_ff32_4d65_9eac_f511550e6e25"> &lt;div style="line-height: 10.3509pt; margin-top: 0.00pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund&#x2019;s portfolio turnover rate was &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;90&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;% of the average value of its portfolio.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.3509pt;"&gt; &lt;/span&gt;&lt;/div&gt; </oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="D20260331_20260331_S000002323Member_ClassKMember"
      decimals="4"
      id="h_91_43729732_aed0_44e0_a85c_e11c312c2357"
      unitRef="pure">0.90</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="D20260331_20260331_S000002323Member_ClassKMember"
      id="t_30_f3049e49_4c24_3b0e_9b03_86b9a54a7c99">Principal Investment Strategies of the Fund</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="D20260331_20260331_S000002323Member_ClassKMember"
      id="t_34_4ade2d41_2136_028d_9514_a829b78b763d"> &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Under normal circumstances, the Fund seeks to invest at least 80% of its net assets, plus the amount of any&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;borrowings for investment purposes, in equity securities of U.S. small and medium capitalization companies, and&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;derivatives that have similar economic characteristics to such securities. Investments in derivatives are counted&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;toward the Fund&#x2019;s 80% policy to the extent that they provide investment exposure to the securities included within that&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;policy or to one or more market risk factors associated with such securities. The Fund primarily intends to invest in&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;equity securities or other financial instruments that are components of, or have characteristics similar to, the&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;securities included in the Russell 2500&#x2122; Index. The Russell 2500&#x2122; Index is an index that measures the performance&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;of the small to mid-cap segment of the U.S. equity universe, commonly referred to as &#x201c;smid&#x201d; cap. The Russell 2500&#x2122;&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Index is a subset of the Russell 3000&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 5pt; position: relative; top: -3.25pt;"&gt;&#xae;&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Index. It includes approximately 2500 of the smallest securities of the Russell&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;3000&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 5pt; position: relative; top: -3.25pt;"&gt;&#xae;&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Index based on a combination of their market cap and current index membership. The Fund may invest in&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;issuers of any market capitalization. The equity securities in which the Fund invests primarily consist of common stock,&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;but may also include preferred stock. From time to time, the Fund may invest in shares of companies through &#x201c;new&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;issues&#x201d; or initial public offerings (&#x201c;IPOs&#x201d;). The Fund may also purchase convertible securities.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund may use derivatives, including options, futures, swaps (including, but not limited to, total return swaps that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;may be referred to as contracts for difference) and forward contracts, both to seek to increase the return of the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;and to hedge (or protect) the value of its assets against adverse movements in interest rates and movements in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;securities markets. In order to manage cash flows into or out of the Fund effectively, the Fund may buy and sell &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;financial futures contracts or options on such contracts. Derivatives are financial instruments whose value is derived &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;from another security, a currency or an index, including but not limited to the Russell 2500&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 5pt; position: relative; top: -3.25pt;"&gt;TM&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund seeks to pursue its investment objective by investing in securities in a disciplined manner, by using &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;proprietary return forecast models that incorporate quantitative analysis. These forecast models are designed to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;identify aspects of mispricing across stocks which the Fund can seek to capture by over- and under-weighting particular &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;equity securities while seeking to control incremental risk. BlackRock then constructs and rebalances the portfolio by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;integrating its investment insights with the model-based optimization process.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund may engage in active and frequent trading of portfolio securities to seek to achieve its primary investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;strategies.&lt;/span&gt;&lt;/div&gt; </oef:StrategyNarrativeTextBlock>
    <fnd:NmRule35d1EightyPctInvstmntPlcyTextBlock
      contextRef="D20260331_20260331_S000002323Member_ClassKMember"
      id="t_31_25e036d9_6775_448e_7bb9_1dfab8c6f47f">Under normal circumstances, the Fund seeks to invest at least 80% of its net assets, plus the amount of any&#160;borrowings for investment purposes, in equity securities of U.S. small and medium capitalization companies, and&#160;derivatives that have similar economic characteristics to such securities. Investments in derivatives are counted&#160;toward the Fund&#x2019;s 80% policy to the extent that they provide investment exposure to the securities included within that&#160;policy or to one or more market risk factors associated with such securities.</fnd:NmRule35d1EightyPctInvstmntPlcyTextBlock>
    <fnd:NmRule35d1TermDfnSmryTextBlock
      contextRef="D20260331_20260331_S000002323Member_ClassKMember"
      id="t_32_4b09e19c_e99c_a310_d3ab_73b8440095bb">The Fund primarily intends to invest in&#160;equity securities or other financial instruments that are components of, or have characteristics similar to, the&#160;securities included in the Russell 2500&#x2122; Index. The Russell 2500&#x2122; Index is an index that measures the performance&#160;of the small to mid-cap segment of the U.S. equity universe, commonly referred to as &#x201c;smid&#x201d; cap. The Russell 2500&#x2122;&#160;Index is a subset of the Russell 3000&#xae;&#160;Index. It includes approximately 2500 of the smallest securities of the Russell&#160;3000&#xae;&#160;Index based on a combination of their market cap and current index membership. The Fund may invest in&#160;issuers of any market capitalization. The equity securities in which the Fund invests primarily consist of common stock,&#160;but may also include preferred stock. From time to time, the Fund may invest in shares of companies through &#x201c;new&#160;issues&#x201d; or initial public offerings (&#x201c;IPOs&#x201d;). The Fund may also purchase convertible securities.</fnd:NmRule35d1TermDfnSmryTextBlock>
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      contextRef="D20260331_20260331_S000002323Member_ClassKMember"
      id="t_33_627a693d_9e5a_67f1_9399_d8a68bedd4f9">  &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund seeks to pursue its investment objective by investing in securities in a disciplined manner, by using &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;proprietary return forecast models that incorporate quantitative analysis. These forecast models are designed to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;identify aspects of mispricing across stocks which the Fund can seek to capture by over- and under-weighting particular &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;equity securities while seeking to control incremental risk. BlackRock then constructs and rebalances the portfolio by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;integrating its investment insights with the model-based optimization process.&lt;/span&gt;&lt;/div&gt;  </fnd:NmRule35d1TermSlctnCritSmryTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260331_20260331_S000002323Member_ClassKMember_RiskLoseMoneyMember"
      id="t_70_81ba9aca_978f_9b04_7f29_1a4f7804296e">You may lose part or all of your&#160;investment in the Fund or your investment may not perform as well as other similar investments.</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260331_20260331_S000002323Member_ClassKMember_RiskNotInsuredDepositoryInstitutionMember"
      id="t_56_d6a92c55_83d3_ae7d_ffb0_52dee83626ee">An investment in the&#160;Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other&#160;government agency.</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260331_20260331_S000002323Member_ClassKMember_EquitySecuritiesRiskMember"
      id="t_57_2d252404_f11a_436e_27ae_2018cc6ef1f1"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7691pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.50pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.43pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Equity Securities Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; Stock markets are volatile. The price of equity securities fluctuates based on changes in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;company&#x2019;s financial condition and overall market and economic conditions.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260331_20260331_S000002323Member_ClassKMember_SmallAndMidCapitalizationCompanyRiskMember"
      id="t_58_6c45b91a_0f90_eb9b_8588_67b149782ae1"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7691pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.50pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.43pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Small and Mid-Capitalization Company Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; Companies with small or mid-size market capitalizations will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;normally have more limited product lines, markets and financial resources and will be dependent upon a more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;limited management group than larger capitalized companies. In addition, it is more difficult to get information on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;smaller companies, which tend to be less well known, have shorter operating histories, do not have significant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;ownership by large investors and are followed by relatively few securities analysts.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260331_20260331_S000002323Member_ClassKMember_InvestmentStyleRiskMember"
      id="t_59_aed65c76_3f9c_596c_3a2a_6d8fdc471e7b"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7791pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.50pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.43pt; margin-left: 4pt; text-align: left; width: 505.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Investment Style Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;&#x2014;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; Under certain market conditions, value investments have performed better during periods &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;of economic recovery. Therefore, this investment style may over time go in and out of favor. At times when the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;investment style used by the Fund is out of favor, the Fund may underperform other equity funds that use different &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;investment styles.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260331_20260331_S000002323Member_ClassKMember_ModelRiskMember"
      id="t_60_b613a944_2700_f4c4_f5d9_28dbf9120328"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7791pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.50pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.43pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Model Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; The Fund seeks to pursue its investment objective by using proprietary models that incorporate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;quantitative analysis. Investments selected using these models may perform differently than as forecasted due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;the factors incorporated into the models and the weighting of each factor, changes from historical trends, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;issues in the construction and implementation of the models (including, but not limited to, software issues, issues &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;related to the use of artificial intelligence and machine learning (&#x201c;AI&#x201d;), and other technological issues). There is no &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;guarantee that BlackRock&#x2019;s use of these models will result in effective investment decisions for the Fund.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.3509pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt;  &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The information and data used in the models may be supplied by third parties. Inaccurate or incomplete data may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;limit the effectiveness of the models. In addition, some of the data that BlackRock uses may be historical data, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;which may not accurately predict future market movement. There is a risk that the models will not be successful in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;selecting investments or in determining the weighting of investment positions that will enable the Fund to achieve &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;its investment objective.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.3509pt;"&gt; &lt;/span&gt;&lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260331_20260331_S000002323Member_ClassKMember_ConvertibleSecuritiesRiskMember"
      id="t_61_193baeb8_1a74_8e6b_2b1c_08c6ed903f36"> &lt;div&gt; &lt;div style="clear: both; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.50pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.43pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Convertible Securities Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; The market value of a convertible security performs like that of a regular debt &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;security; that is, if market interest rates rise, the value of a convertible security usually falls. In addition, convertible &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;securities are subject to the risk that the issuer will not be able to pay interest, principal or dividends when due, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;their market value may change based on changes in the issuer&#x2019;s credit rating or the market&#x2019;s perception of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;issuer&#x2019;s creditworthiness. Since it derives a portion of its value from the common stock into which it may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;converted, a convertible security is also subject to the same types of market and issuer risks that apply to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;underlying common stock, including the potential for increased volatility in the price of the convertible security.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.3509pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260331_20260331_S000002323Member_ClassKMember_DerivativesRisksMember"
      id="t_62_5d29a7f1_df7a_b996_39f0_d7a772eb1103"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7791pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.50pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.43pt; margin-left: 4pt; text-align: left; width: 505.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Derivatives Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; The Fund&#x2019;s use of derivatives may increase its costs, reduce the Fund&#x2019;s returns and/or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;increase volatility. Derivatives involve significant risks, including:&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt;  &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Leverage Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; The Fund&#x2019;s use of derivatives can magnify the Fund&#x2019;s gains and losses. Relatively small market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;movements may result in large changes in the value of a derivatives position and can result in losses that greatly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;exceed the amount originally invested.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Some derivatives are more sensitive to interest rate changes and market price fluctuations than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;other securities. The Fund could also suffer losses related to its derivatives positions as a result of unanticipated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;market movements, which losses are potentially unlimited. Finally, BlackRock may not be able to predict correctly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;the direction of securities prices, interest rates and other economic factors, which could cause the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;derivatives positions to lose value.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Counterparty Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Derivatives are also subject to counterparty risk, which is the risk that the other party in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;transaction will be unable or unwilling to fulfill its contractual obligation, and the related risks of having concentrated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;exposure to such a counterparty.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Illiquidity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; The possible lack of a liquid secondary market for derivatives and the resulting inability of the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;to sell or otherwise close a derivatives position could expose the Fund to losses and could make derivatives more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;difficult for the Fund to value accurately.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; The use of derivatives includes the risk of potential operational issues, including documentation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;issues, settlement issues, systems failures, inadequate controls and human error.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Legal Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; The risk of insufficient documentation, insufficient capacity or authority of counterparty, or legality or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;enforceability of a contract.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Volatility and Correlation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Volatility is defined as the characteristic of a security, an index or a market to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;fluctuate significantly in price within a short time period. A risk of the Fund&#x2019;s use of derivatives is that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;fluctuations in their values may not correlate with the overall securities markets.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Valuation for derivatives may not be readily available in the market. Valuation may be more difficult &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;in times of market turmoil since many investors and market makers may be reluctant to purchase complex &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;instruments or quote prices for them.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Hedging Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Hedges are sometimes subject to imperfect matching between the derivative and the underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;security, and there can be no assurance that the Fund&#x2019;s hedging transactions will be effective. The use of hedging &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;may result in certain adverse tax consequences.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Tax Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Certain aspects of the tax treatment of derivative instruments, including swap agreements and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;commodity-linked derivative instruments, are currently unclear and may be affected by changes in legislation, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;regulations or other legally binding authority. Such treatment may be less favorable than that given to a direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;investment in an underlying asset and may adversely affect the timing, character and amount of income the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;realizes from its investments.&lt;/span&gt;&lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260331_20260331_S000002323Member_ClassKMember_HighPortfolioTurnoverRiskMember"
      id="t_63_9e46c5e8_bca0_b642_e6c6_3507040fc190"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7791pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.50pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.43pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;High Portfolio Turnover Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; The Fund may engage in active and frequent trading of its portfolio securities. High &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;portfolio turnover (more than 100%) may result in increased transaction costs to the Fund, including brokerage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;commissions, dealer mark-ups and other transaction costs on the sale of the securities and on reinvestment in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;other securities. The sale of Fund portfolio securities may result in the realization and/or distribution to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;shareholders of higher capital gains or losses as compared to a fund with less active trading policies. These effects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;of higher than normal portfolio turnover may adversely affect Fund performance.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260331_20260331_S000002323Member_ClassKMember_LeverageRiskMember"
      id="t_64_a2e3c037_0bfe_805d_91a0_cb21a164a756"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7791pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.50pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.43pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Leverage Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Some transactions may give rise to a form of economic leverage. These transactions may include, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;among others, derivatives, and may expose the Fund to greater risk and increase its costs. The use of leverage may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;cause the Fund to liquidate portfolio positions when it may not be advantageous to do so to satisfy its obligations or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;to meet the applicable requirements of the Investment Company Act of 1940, as amended, and the rules &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;thereunder. Increases and decreases in the value of the Fund&#x2019;s portfolio will be magnified when the Fund uses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;leverage.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.3509pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260331_20260331_S000002323Member_ClassKMember_MarketRiskAndSelectionRiskMember"
      id="t_65_2ad370d1_f739_1564_b4f0_2cad5a92e42b"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7791pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.50pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.43pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Market Risk and Selection Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; Market risk is the risk that one or more markets in which the Fund invests will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;go down in value, including the possibility that the markets will go down sharply and unpredictably. The value of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;security or other asset may decline due to changes in general market conditions, economic trends or events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;are not specifically related to the issuer of the security or other asset, or factors that affect a particular issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;issuers, exchange, country, group of countries, region, market, industry, group of industries, sector or asset class. &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt;  &lt;div style="line-height: 10.3509pt; margin-left: 12pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Local, regional or global events such as war, acts of terrorism, the spread of infectious illness or other public health &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;issues like pandemics or epidemics, recessions, or other events could have a significant impact on the Fund and its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;investments. Selection risk is the risk that the securities selected by Fund management will underperform the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;markets, the relevant indices or the securities selected by other funds with similar investment objectives and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;investment strategies. The Fund seeks to pursue its investment objective by using proprietary models that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;incorporate quantitative analysis and is subject to &#x201c;Model Risk&#x201d; as described above. This means you may lose &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;money.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 2pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Recent policy initiatives undertaken by the U.S. government have the potential to impact international relations, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;trade agreements and the overall regulatory environment in ways that could create uncertainty and instability in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;domestic and global markets, and could adversely affect the investment performance of the Fund. In particular, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;actions taken by the U.S. government in respect of international trade relations could lead to trade wars, increased &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;costs for imported goods, disruptions in supply chains, reduced foreign investment, and instability in regions where &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;the Fund invests.&lt;/span&gt;&lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260331_20260331_S000002323Member_ClassKMember_NewIssuesRiskMember"
      id="t_66_ddd4276a_8e3f_5c3f_bd67_ab3cf3d56581"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7791pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.50pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.43pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;&#x201c;New Issues&#x201d; Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;&#x2014;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x201c;New issues&#x201d; are IPOs of equity securities. Securities issued in IPOs have no trading history, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;and information about the companies may be available for very limited periods. In addition, the prices of securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;sold in IPOs may be highly volatile or may decline shortly after the IPO.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260331_20260331_S000002323Member_ClassKMember_OperationalAndTechnologyRisksMember"
      id="t_67_015a207f_6e86_c8a8_23e3_f9f968ee2594"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7691pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.50pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.43pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Operational and Technology Risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; The Fund is directly and indirectly susceptible to operational and technology &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;risks, including those related to human errors, processing errors, communication errors, systems failures, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;cybersecurity incidents, and the use of artificial intelligence and machine learning (&#x201c;AI&#x201d;), which may result in losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;for the Fund and its shareholders or may impair the Fund&#x2019;s operations. While the Fund&#x2019;s service providers are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;required to have appropriate operational, information security and cybersecurity risk management policies and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;procedures, their methods of risk management may differ from those of the Fund. Operational and technology risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;for the issuers in which the Fund invests could also result in material adverse consequences for such issuers and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;may cause the Fund&#x2019;s investments in such issuers to lose value.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260331_20260331_S000002323Member_ClassKMember_PreferredSecuritiesRiskMember"
      id="t_68_498f075d_d5e6_4213_5b1b_8103e2e4d86a"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7691pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.50pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.43pt; margin-left: 4pt; text-align: left; width: 505.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Preferred Securities Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Preferred securities may pay fixed or adjustable rates of return. Preferred securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;are subject to issuer-specific and market risks applicable generally to equity securities. In addition, a company&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;preferred securities generally pay dividends only after the company makes required payments to holders of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;bonds and other debt. For this reason, the value of preferred securities will usually react more strongly than bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;and other debt to actual or perceived changes in the company&#x2019;s financial condition or prospects. Preferred &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;securities of smaller companies may be more vulnerable to adverse developments than preferred securities of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;larger companies.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260331_20260331_S000002323Member_ClassKMember_RiskOfInvestingInTheUnitedStatesMember"
      id="t_69_fd4e851d_a872_db76_80de_76efb135c7f5"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7791pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.50pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.43pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the United States &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;&#x2014;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; Certain changes in the U.S. economy, such as when the U.S. economy &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;weakens or when its financial markets decline, may have an adverse effect on the securities to which the Fund has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;exposure.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="D20260331_20260331_S000002323Member_ClassKMember"
      id="t_35_81828348_9baf_4328_409c_519e400e81b5">Performance Information</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
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      id="t_41_1558efc8_ea3d_14b8_5ef3_e780701af3b8"> &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The information shows you how the Fund&#x2019;s performance has varied year by year and provides some indication of the&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;risks of investing in the Fund. Class K Shares commenced operations on January 25, 2018. Effective &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;February 9, 2021, the Fund changed its name and investment strategies. 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The performance of Class K Shares would be substantially similar to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Institutional Shares because Class K Shares and Institutional Shares are invested in the same portfolio of securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;and performance would differ only to the extent that Institutional Shares and Class K Shares have different expenses. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The actual returns of Class K Shares would have been higher than those of Institutional Shares because Class K &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Shares have lower expenses than Institutional Shares. The Fund&#x2019;s returns prior to December 15, 2017 as reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;the bar chart and the table are the returns of the Fund when it followed a different investment objective and different &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;investment strategies under the name &#x201c;BlackRock Value Opportunities Fund, Inc.&#x201d; The table compares the Fund&#x2019;s&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;performance to that of the Russell 3000&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 5pt; position: relative; top: -3.25pt;"&gt;&#xae;&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Index and the Russell 2500&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 5pt; position: relative; top: -3.25pt;"&gt;TM&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Index. The Russell 2500&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 5pt; position: relative; top: -3.25pt;"&gt;TM&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Index is relevant to&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;the Fund because it has characteristics similar to the Fund&#x2019;s investment strategy. To the extent that dividends and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;distributions have been paid by the Fund, the performance information for the Fund in the chart and table assumes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;reinvestment of the dividends and distributions. As with all such investments, past performance (before and after&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;taxes) is not an indication of future results. The table includes all applicable fees. If the Fund&#x2019;s investment manager &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;and its affiliates had not waived or reimbursed certain Fund expenses during these periods, the Fund&#x2019;s returns would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;have been lower. Updated information on the Fund&#x2019;s performance, including its current net asset value, can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;obtained by visiting www.blackrock.com or can be obtained by phone at &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;(800) 882-0052&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;.&lt;/span&gt;&lt;/div&gt; </oef:PerformanceNarrativeTextBlock>
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      id="t_42_551674aa_cf3a_db91_d03c_831f59108a1e"> Class K Shares ANNUAL TOTAL RETURNS BlackRock Advantage SMID Cap Fund, Inc. As of 12/31 </oef:BarChartHeading>
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