<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.26.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>280</ContextCount>
  <ElementCount>307</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>118</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>17</UnitCount>
  <MyReports>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>0000001 - Document - Cover Page</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/CoverPage</Role>
      <ShortName>Cover Page</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>9952151 - Statement - Condensed Consolidated Balance Sheets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/CondensedConsolidatedBalanceSheets</Role>
      <ShortName>Condensed Consolidated Balance Sheets</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>9952152 - Statement - Condensed Consolidated Balance Sheets (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/CondensedConsolidatedBalanceSheetsParenthetical</Role>
      <ShortName>Condensed Consolidated Balance Sheets (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>9952153 - Statement - Condensed Consolidated Statements of Earnings</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/CondensedConsolidatedStatementsofEarnings</Role>
      <ShortName>Condensed Consolidated Statements of Earnings</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>9952154 - Statement - Condensed Consolidated Statements of Comprehensive Earnings</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/CondensedConsolidatedStatementsofComprehensiveEarnings</Role>
      <ShortName>Condensed Consolidated Statements of Comprehensive Earnings</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>9952155 - Statement - Condensed Consolidated Statements of Stockholders' Equity (Deficit)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/CondensedConsolidatedStatementsofStockholdersEquityDeficit</Role>
      <ShortName>Condensed Consolidated Statements of Stockholders' Equity (Deficit)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>9952156 - Statement - Condensed Consolidated Statements of Stockholders' Equity (Deficit) (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/CondensedConsolidatedStatementsofStockholdersEquityDeficitParenthetical</Role>
      <ShortName>Condensed Consolidated Statements of Stockholders' Equity (Deficit) (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>9952157 - Statement - Condensed Consolidated Statements of Cash Flows</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/CondensedConsolidatedStatementsofCashFlows</Role>
      <ShortName>Condensed Consolidated Statements of Cash Flows</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>9952158 - Disclosure - Background and Basis of Presentation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/BackgroundandBasisofPresentation</Role>
      <ShortName>Background and Basis of Presentation</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>9952159 - Disclosure - Goodwill and Other Intangible Assets, net</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/GoodwillandOtherIntangibleAssetsnet</Role>
      <ShortName>Goodwill and Other Intangible Assets, net</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>9952160 - Disclosure - Exit and Implementation Costs</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/ExitandImplementationCosts</Role>
      <ShortName>Exit and Implementation Costs</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>9952161 - Disclosure - Investments in Equity Securities</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/InvestmentsinEquitySecurities</Role>
      <ShortName>Investments in Equity Securities</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>9952162 - Disclosure - Financial Instruments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/FinancialInstruments</Role>
      <ShortName>Financial Instruments</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>9952163 - Disclosure - Benefit Plans</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/BenefitPlans</Role>
      <ShortName>Benefit Plans</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>9952164 - Disclosure - Earnings per Share</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/EarningsperShare</Role>
      <ShortName>Earnings per Share</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>9952165 - Disclosure - Other Comprehensive Earnings/Losses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/OtherComprehensiveEarningsLosses</Role>
      <ShortName>Other Comprehensive Earnings/Losses</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>9952166 - Disclosure - Segment Reporting</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/SegmentReporting</Role>
      <ShortName>Segment Reporting</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>9952167 - Disclosure - Debt</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/Debt</Role>
      <ShortName>Debt</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>9952168 - Disclosure - Income Taxes</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/IncomeTaxes</Role>
      <ShortName>Income Taxes</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>9952169 - Disclosure - Contingencies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/Contingencies</Role>
      <ShortName>Contingencies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>9952170 - Disclosure - Additional Financial Statement Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/AdditionalFinancialStatementInformation</Role>
      <ShortName>Additional Financial Statement Information</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>9952171 - Disclosure - New Accounting Guidance Not Yet Adopted</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/NewAccountingGuidanceNotYetAdopted</Role>
      <ShortName>New Accounting Guidance Not Yet Adopted</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>995445 - Disclosure - Insider Trading Arrangements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements</Role>
      <ShortName>Insider Trading Arrangements</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>9955511 - Disclosure - Background and Basis of Presentation (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/BackgroundandBasisofPresentationPolicies</Role>
      <ShortName>Background and Basis of Presentation (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <ParentRole>http://www.altria.com/role/NewAccountingGuidanceNotYetAdopted</ParentRole>
      <Position>24</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>9955512 - Disclosure - Goodwill and Other Intangible Assets, net (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/GoodwillandOtherIntangibleAssetsnetTables</Role>
      <ShortName>Goodwill and Other Intangible Assets, net (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.altria.com/role/GoodwillandOtherIntangibleAssetsnet</ParentRole>
      <Position>25</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>9955513 - Disclosure - Exit and Implementation Costs (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/ExitandImplementationCostsTables</Role>
      <ShortName>Exit and Implementation Costs (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.altria.com/role/ExitandImplementationCosts</ParentRole>
      <Position>26</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>9955514 - Disclosure - Investments in Equity Securities (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/InvestmentsinEquitySecuritiesTables</Role>
      <ShortName>Investments in Equity Securities (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.altria.com/role/InvestmentsinEquitySecurities</ParentRole>
      <Position>27</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>9955515 - Disclosure - Financial Instruments (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/FinancialInstrumentsTables</Role>
      <ShortName>Financial Instruments (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.altria.com/role/FinancialInstruments</ParentRole>
      <Position>28</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>9955516 - Disclosure - Benefit Plans (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/BenefitPlansTables</Role>
      <ShortName>Benefit Plans (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.altria.com/role/BenefitPlans</ParentRole>
      <Position>29</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>9955517 - Disclosure - Earnings per Share (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/EarningsperShareTables</Role>
      <ShortName>Earnings per Share (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.altria.com/role/EarningsperShare</ParentRole>
      <Position>30</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>9955518 - Disclosure - Other Comprehensive Earnings/Losses (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/OtherComprehensiveEarningsLossesTables</Role>
      <ShortName>Other Comprehensive Earnings/Losses (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.altria.com/role/OtherComprehensiveEarningsLosses</ParentRole>
      <Position>31</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>9955519 - Disclosure - Segment Reporting (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/SegmentReportingTables</Role>
      <ShortName>Segment Reporting (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.altria.com/role/SegmentReporting</ParentRole>
      <Position>32</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>9955520 - Disclosure - Contingencies (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/ContingenciesTables</Role>
      <ShortName>Contingencies (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.altria.com/role/Contingencies</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>9955521 - Disclosure - Additional Financial Statement Information (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/AdditionalFinancialStatementInformationTables</Role>
      <ShortName>Additional Financial Statement Information (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.altria.com/role/AdditionalFinancialStatementInformation</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>9955522 - Disclosure - New Accounting Guidance Not Yet Adopted (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/NewAccountingGuidanceNotYetAdoptedTables</Role>
      <ShortName>New Accounting Guidance Not Yet Adopted (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.altria.com/role/NewAccountingGuidanceNotYetAdopted</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>9955523 - Disclosure - Background and Basis of Presentation (Background Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/BackgroundandBasisofPresentationBackgroundNarrativeDetails</Role>
      <ShortName>Background and Basis of Presentation (Background Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/BackgroundandBasisofPresentationPolicies</ParentRole>
      <Position>36</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>9955524 - Disclosure - Goodwill and Other Intangible Assets, net (Schedule of Goodwill and Intangible Assets by Segment) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/GoodwillandOtherIntangibleAssetsnetScheduleofGoodwillandIntangibleAssetsbySegmentDetails</Role>
      <ShortName>Goodwill and Other Intangible Assets, net (Schedule of Goodwill and Intangible Assets by Segment) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/GoodwillandOtherIntangibleAssetsnetTables</ParentRole>
      <Position>37</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>9955525 - Disclosure - Goodwill and Other Intangible Assets, net (Other Intangible Assets Disclosure) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/GoodwillandOtherIntangibleAssetsnetOtherIntangibleAssetsDisclosureDetails</Role>
      <ShortName>Goodwill and Other Intangible Assets, net (Other Intangible Assets Disclosure) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/GoodwillandOtherIntangibleAssetsnetTables</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>9955526 - Disclosure - Goodwill and Other Intangible Assets, net (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/GoodwillandOtherIntangibleAssetsnetNarrativeDetails</Role>
      <ShortName>Goodwill and Other Intangible Assets, net (Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/GoodwillandOtherIntangibleAssetsnetTables</ParentRole>
      <Position>39</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>9955527 - Disclosure - Goodwill and Other Intangible Assets, net (Schedule of Goodwill and Net Carrying Amount of Intangible Assets) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/GoodwillandOtherIntangibleAssetsnetScheduleofGoodwillandNetCarryingAmountofIntangibleAssetsDetails</Role>
      <ShortName>Goodwill and Other Intangible Assets, net (Schedule of Goodwill and Net Carrying Amount of Intangible Assets) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/GoodwillandOtherIntangibleAssetsnetTables</ParentRole>
      <Position>40</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>9955528 - Disclosure - Exit and Implementation Costs (Pre-tax Asset Impairment, Exit and Implementation Costs) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/ExitandImplementationCostsPretaxAssetImpairmentExitandImplementationCostsDetails</Role>
      <ShortName>Exit and Implementation Costs (Pre-tax Asset Impairment, Exit and Implementation Costs) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/ExitandImplementationCostsTables</ParentRole>
      <Position>41</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>9955529 - Disclosure - Exit and Implementation Costs (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/ExitandImplementationCostsNarrativeDetails</Role>
      <ShortName>Exit and Implementation Costs (Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/ExitandImplementationCostsTables</ParentRole>
      <Position>42</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>9955530 - Disclosure - Exit and Implementation Costs (Movement in Exit and Implementation Costs) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/ExitandImplementationCostsMovementinExitandImplementationCostsDetails</Role>
      <ShortName>Exit and Implementation Costs (Movement in Exit and Implementation Costs) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/ExitandImplementationCostsTables</ParentRole>
      <Position>43</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>9955531 - Disclosure - Investments in Equity Securities (Summary of Investments) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/InvestmentsinEquitySecuritiesSummaryofInvestmentsDetails</Role>
      <ShortName>Investments in Equity Securities (Summary of Investments) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/InvestmentsinEquitySecuritiesTables</ParentRole>
      <Position>44</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>9955532 - Disclosure - Investments in Equity Securities (Investment in ABI Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/InvestmentsinEquitySecuritiesInvestmentinABINarrativeDetails</Role>
      <ShortName>Investments in Equity Securities (Investment in ABI Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/InvestmentsinEquitySecuritiesTables</ParentRole>
      <Position>45</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>9955533 - Disclosure - Investments in Equity Securities (Investment in Cronos Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/InvestmentsinEquitySecuritiesInvestmentinCronosNarrativeDetails</Role>
      <ShortName>Investments in Equity Securities (Investment in Cronos Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/InvestmentsinEquitySecuritiesTables</ParentRole>
      <Position>46</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>9955534 - Disclosure - Financial Instruments (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/FinancialInstrumentsNarrativeDetails</Role>
      <ShortName>Financial Instruments (Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/FinancialInstrumentsTables</ParentRole>
      <Position>47</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>9955535 - Disclosure - Financial Instruments (Aggregate Fair Value and Carrying Value) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/FinancialInstrumentsAggregateFairValueandCarryingValueDetails</Role>
      <ShortName>Financial Instruments (Aggregate Fair Value and Carrying Value) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/FinancialInstrumentsTables</ParentRole>
      <Position>48</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>9955536 - Disclosure - Financial Instruments (Schedule of Contingent Payments) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/FinancialInstrumentsScheduleofContingentPaymentsDetails</Role>
      <ShortName>Financial Instruments (Schedule of Contingent Payments) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/FinancialInstrumentsTables</ParentRole>
      <Position>49</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>9955537 - Disclosure - Benefit Plans (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/BenefitPlansNarrativeDetails</Role>
      <ShortName>Benefit Plans (Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/BenefitPlansTables</ParentRole>
      <Position>50</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>9955538 - Disclosure - Benefit Plans (Schedule of Components of Net Periodic Pension Cost) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/BenefitPlansScheduleofComponentsofNetPeriodicPensionCostDetails</Role>
      <ShortName>Benefit Plans (Schedule of Components of Net Periodic Pension Cost) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/BenefitPlansTables</ParentRole>
      <Position>51</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>9955539 - Disclosure - Earnings per Share (Basic and Diluted Earnings Per Share) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/EarningsperShareBasicandDilutedEarningsPerShareDetails</Role>
      <ShortName>Earnings per Share (Basic and Diluted Earnings Per Share) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/EarningsperShareTables</ParentRole>
      <Position>52</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>9955540 - Disclosure - Other Comprehensive Earnings/Losses (Changes in Each Component of Accumulated Other Comprehensive Losses) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/OtherComprehensiveEarningsLossesChangesinEachComponentofAccumulatedOtherComprehensiveLossesDetails</Role>
      <ShortName>Other Comprehensive Earnings/Losses (Changes in Each Component of Accumulated Other Comprehensive Losses) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/OtherComprehensiveEarningsLossesTables</ParentRole>
      <Position>53</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>9955541 - Disclosure - Other Comprehensive Earnings/Losses (Reclassifications) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/OtherComprehensiveEarningsLossesReclassificationsDetails</Role>
      <ShortName>Other Comprehensive Earnings/Losses (Reclassifications) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/OtherComprehensiveEarningsLossesTables</ParentRole>
      <Position>54</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>9955542 - Disclosure - Segment Reporting (Segment Data Schedule) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/SegmentReportingSegmentDataScheduleDetails</Role>
      <ShortName>Segment Reporting (Segment Data Schedule) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/SegmentReportingTables</ParentRole>
      <Position>55</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>9955543 - Disclosure - Segment Reporting (Smokeable Products Segment) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/SegmentReportingSmokeableProductsSegmentDetails</Role>
      <ShortName>Segment Reporting (Smokeable Products Segment) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/SegmentReportingTables</ParentRole>
      <Position>56</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>9955544 - Disclosure - Segment Reporting (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/SegmentReportingNarrativeDetails</Role>
      <ShortName>Segment Reporting (Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/SegmentReportingTables</ParentRole>
      <Position>57</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>9955545 - Disclosure - Segment Reporting (Schedule of Depreciation Expense and Capital Expenditures of Segments) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/SegmentReportingScheduleofDepreciationExpenseandCapitalExpendituresofSegmentsDetails</Role>
      <ShortName>Segment Reporting (Schedule of Depreciation Expense and Capital Expenditures of Segments) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/SegmentReportingTables</ParentRole>
      <Position>58</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>9955546 - Disclosure - Segment Reporting (Schedule of Pre-tax Tobacco and Health Litigation Charges) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/SegmentReportingScheduleofPretaxTobaccoandHealthLitigationChargesDetails</Role>
      <ShortName>Segment Reporting (Schedule of Pre-tax Tobacco and Health Litigation Charges) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/SegmentReportingTables</ParentRole>
      <Position>59</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>9955547 - Disclosure - Debt (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/DebtNarrativeDetails</Role>
      <ShortName>Debt (Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/Debt</ParentRole>
      <Position>60</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>9955548 - Disclosure - Income Taxes (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/IncomeTaxesNarrativeDetails</Role>
      <ShortName>Income Taxes (Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/IncomeTaxes</ParentRole>
      <Position>61</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>9955549 - Disclosure - Contingencies (General Information) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/ContingenciesGeneralInformationDetails</Role>
      <ShortName>Contingencies (General Information) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/ContingenciesTables</ParentRole>
      <Position>62</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>9955550 - Disclosure - Contingencies (Judgments Paid and Provisions for Tobacco and Health Litigation) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/ContingenciesJudgmentsPaidandProvisionsforTobaccoandHealthLitigationDetails</Role>
      <ShortName>Contingencies (Judgments Paid and Provisions for Tobacco and Health Litigation) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/ContingenciesTables</ParentRole>
      <Position>63</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>9955551 - Disclosure - Contingencies (Schedule of Pending Cases) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/ContingenciesScheduleofPendingCasesDetails</Role>
      <ShortName>Contingencies (Schedule of Pending Cases) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/ContingenciesTables</ParentRole>
      <Position>64</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R65.htm</HtmlFileName>
      <LongName>9955552 - Disclosure - Contingencies (Overview of Tobacco-Related Litigation Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/ContingenciesOverviewofTobaccoRelatedLitigationNarrativeDetails</Role>
      <ShortName>Contingencies (Overview of Tobacco-Related Litigation Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/ContingenciesTables</ParentRole>
      <Position>65</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R66.htm</HtmlFileName>
      <LongName>9955553 - Disclosure - Contingencies (Non-Engle Progeny Litigation) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/ContingenciesNonEngleProgenyLitigationDetails</Role>
      <ShortName>Contingencies (Non-Engle Progeny Litigation) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/ContingenciesTables</ParentRole>
      <Position>66</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R67.htm</HtmlFileName>
      <LongName>9955554 - Disclosure - Contingencies (Engle Class Action And Engle Progeny Trial Results) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/ContingenciesEngleClassActionAndEngleProgenyTrialResultsDetails</Role>
      <ShortName>Contingencies (Engle Class Action And Engle Progeny Trial Results) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/ContingenciesTables</ParentRole>
      <Position>67</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R68.htm</HtmlFileName>
      <LongName>9955555 - Disclosure - Contingencies (Engle Progeny Cases Trial Results - Pending and Concluded) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/ContingenciesEngleProgenyCasesTrialResultsPendingandConcludedDetails</Role>
      <ShortName>Contingencies (Engle Progeny Cases Trial Results - Pending and Concluded) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/ContingenciesTables</ParentRole>
      <Position>68</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R69.htm</HtmlFileName>
      <LongName>9955556 - Disclosure - Contingencies (Other Smoking and Health Class Actions) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/ContingenciesOtherSmokingandHealthClassActionsDetails</Role>
      <ShortName>Contingencies (Other Smoking and Health Class Actions) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/ContingenciesTables</ParentRole>
      <Position>69</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R70.htm</HtmlFileName>
      <LongName>9955557 - Disclosure - Contingencies (Health Care Cost Recovery Litigation) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/ContingenciesHealthCareCostRecoveryLitigationDetails</Role>
      <ShortName>Contingencies (Health Care Cost Recovery Litigation) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/ContingenciesTables</ParentRole>
      <Position>70</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R71.htm</HtmlFileName>
      <LongName>9955558 - Disclosure - Contingencies (NPM Adjustment Disputes) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/ContingenciesNPMAdjustmentDisputesDetails</Role>
      <ShortName>Contingencies (NPM Adjustment Disputes) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/ContingenciesTables</ParentRole>
      <Position>71</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R72.htm</HtmlFileName>
      <LongName>9955559 - Disclosure - Contingencies (Other Disputes Under the State Settlement Agreements) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/ContingenciesOtherDisputesUndertheStateSettlementAgreementsDetails</Role>
      <ShortName>Contingencies (Other Disputes Under the State Settlement Agreements) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/ContingenciesTables</ParentRole>
      <Position>72</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R73.htm</HtmlFileName>
      <LongName>9955560 - Disclosure - Contingencies (E-vapor Litigation) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/ContingenciesEvaporLitigationDetails</Role>
      <ShortName>Contingencies (E-vapor Litigation) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/ContingenciesTables</ParentRole>
      <Position>73</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R74.htm</HtmlFileName>
      <LongName>9955561 - Disclosure - Contingencies (Antitrust Litigation) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/ContingenciesAntitrustLitigationDetails</Role>
      <ShortName>Contingencies (Antitrust Litigation) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/ContingenciesTables</ParentRole>
      <Position>74</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R75.htm</HtmlFileName>
      <LongName>9955562 - Disclosure - Contingencies (Lights/Ultra Lights Cases) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/ContingenciesLightsUltraLightsCasesDetails</Role>
      <ShortName>Contingencies (Lights/Ultra Lights Cases) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/ContingenciesTables</ParentRole>
      <Position>75</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R76.htm</HtmlFileName>
      <LongName>9955563 - Disclosure - Contingencies (Guarantees and Other Similar Matters Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/ContingenciesGuaranteesandOtherSimilarMattersNarrativeDetails</Role>
      <ShortName>Contingencies (Guarantees and Other Similar Matters Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/ContingenciesTables</ParentRole>
      <Position>76</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R77.htm</HtmlFileName>
      <LongName>9955564 - Disclosure - Additional Financial Statement Information (Share Repurchases) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/AdditionalFinancialStatementInformationShareRepurchasesDetails</Role>
      <ShortName>Additional Financial Statement Information (Share Repurchases) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/AdditionalFinancialStatementInformationTables</ParentRole>
      <Position>77</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R78.htm</HtmlFileName>
      <LongName>9955565 - Disclosure - Additional Financial Statement Information (Reconciliation of Cash, Cash Equivalents and Restricted Cash) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/AdditionalFinancialStatementInformationReconciliationofCashCashEquivalentsandRestrictedCashDetails</Role>
      <ShortName>Additional Financial Statement Information (Reconciliation of Cash, Cash Equivalents and Restricted Cash) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/AdditionalFinancialStatementInformationTables</ParentRole>
      <Position>78</Position>
    </Report>
    <Report instance="mo-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R79.htm</HtmlFileName>
      <LongName>9955566 - Disclosure - Additional Financial Statement Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.altria.com/role/AdditionalFinancialStatementInformationDetails</Role>
      <ShortName>Additional Financial Statement Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.altria.com/role/AdditionalFinancialStatementInformationTables</ParentRole>
      <Position>79</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File doctype="10-Q" isDefinitelyFs="true" isUsgaap="true" original="mo-20260331.htm">mo-20260331.htm</File>
    <File>mo-20260331.xsd</File>
    <File>mo-20260331_cal.xml</File>
    <File>mo-20260331_def.xml</File>
    <File>mo-20260331_lab.xml</File>
    <File>mo-20260331_pre.xml</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy items="2">http://fasb.org/srt/2025</BaseTaxonomy>
    <BaseTaxonomy items="685">http://fasb.org/us-gaap/2025</BaseTaxonomy>
    <BaseTaxonomy items="35">http://xbrl.sec.gov/dei/2025</BaseTaxonomy>
    <BaseTaxonomy items="4">http://xbrl.sec.gov/ecd/2025</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
