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Contingencies (Other MSA-Related Litigation) (Details) | 6 Months Ended
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Jun. 30, 2017 case
Other MSA-Related Litigation [Member] |
Loss Contingencies [Line Items] |
Number of unfavorable verdicts | 16

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- Definition Loss Contingency, Claims Decided Unfavorable, Number + References No definition available. + Details
Name: | mo_LossContingencyClaimsDecidedUnfavorableNumber
Namespace Prefix: | mo_
Data Type: | xbrli:integerItemType
Balance Type: | na
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_LossContingenciesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_LitigationCaseAxis=mo_OtherMSARelatedLitigationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |