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v3.25.3

Segment Reporting (Schedule of Non-Participating Manufacturer Adjustment Items) (Details) - Health Care Cost Recovery Actions [Member] - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Segment Reporting Information [Line Items] |  |  |  |
Non-participating manufacturer income adjustment | $ (2) | $ (21) | $ (2) | $ (27)
Cost of Sales [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Non-participating manufacturer income adjustment | 0 | 2 | 0 | 2
Cost of Sales [Member] | Smokeable Products Segment [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Non-participating manufacturer income adjustment | $ (2) | $ (23) | $ (2) | $ (29)

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- Definition Non-Participating Manufacturer Income Adjustment + References No definition available. + Details
Name: | mo_NonParticipatingManufacturerIncomeAdjustment
Namespace Prefix: | mo_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_SegmentReportingInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | srt_LitigationCaseAxis=mo_HealthCareCostRecoveryActionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_CostOfSalesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=mo_SmokeableProductsSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |